BABYL OPTIONS: -*- rmail -*- Version: 5 Labels: Note: This is the header of an rmail file. Note: If you are seeing it in rmail, Note: it means the file has no messages in it.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HQS005ML4MN05@hubbard.azu.nl>; Wed, 31 Dec 2003 22:49:37 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2003123122493427692 ; Wed, 31 Dec 2003 22:49:34 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id WAA24840; Wed, 31 Dec 2003 22:50:43 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma024836; Wed, 31 Dec 2003 22:50:42 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id NAA10511 for linac-eng-list; Wed, 31 Dec 2003 13:56:14 -0600 (CST) Received: from bhcpns.org ([199.190.155.93]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id NAA10507 for ; Wed, 31 Dec 2003 13:56:12 -0600 (CST) Received: from ([10.5.30.69]) by ironmail.bhcpns.org with ESMTP ; Wed, 31 Dec 2003 13:55:42 -0600 (CST) Date: Wed, 31 Dec 2003 13:54:02 -0600 From: lsullivan@bhcpns.org Subject: Base frame 2100c Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Lotus Notes Release 6.5 September 26, 2003 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_yz7aHkNy157/MFOVnjMuoA)" Precedence: bulk X-MIMETrack: Serialize by Router on BHCMail1/PNS/BHC_Notes(Release 6.0.2CF1|June 9, 2003) at 12/31/2003 01:54:03 PM, Serialize complete at 12/31/2003 01:54:03 PM X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 31 Dec 2003 13:54:02 -0600 From: lsullivan@bhcpns.org Subject: Base frame 2100c Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-MIMETrack: Serialize by Router on BHCMail1/PNS/BHC_Notes(Release 6.0.2CF1|June 9, 2003) at 12/31/2003 01:54:03 PM, Serialize complete at 12/31/2003 01:54:03 PM X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This is a multipart message in MIME format. --Boundary_(ID_yz7aHkNy157/MFOVnjMuoA) Content-type: text/plain; charset=US-ASCII __________________ Good day all... We are currently looking for a used high energy (non- VEO) base frame for one of our units we are moving, any leads would be helpful should be in good condition and will be needed sometime in April 2004 Thanks in advance Larry Sullivan ----------------------------------------- All electronic mail communications originating from or transmitted to Baptist Health Care, Inc. are subject to monitoring. This message and the information contained in it, which may consist of electronic data attachments, are the confidential and proprietary communications of Baptist Health Care and are intended to be received only by the individual or individuals to whom the message has been addressed. If the reader of this message is not the intended recipient, please take notice that any use, copying, printing, forwarding or distribution of this message, in any form, is strictly prohibited. If you have received this message in error, please immediately notify the Baptist Health Care Privacy Officer at (850) 434-4472 and/or forward the message to hipaa@bhcpns.org and delete or destroy all copies of this message. --Boundary_(ID_yz7aHkNy157/MFOVnjMuoA) Content-type: text/html; charset=US-ASCII

__________________

Good day all...  We are currently looking for a used high energy (non- VEO) base frame for one of our units we are moving, any leads would be helpful should be in good condition and will be needed sometime in April 2004



Thanks in advance
Larry Sullivan


All electronic mail communications originating from or transmitted to Baptist Health Care, Inc. are subject to monitoring. This message and the information contained in it, which may consist of electronic data attachments, are the confidential and proprietary communications of Baptist Health Care and are intended to be received only by the individual or individuals to whom the message has been addressed. If the reader of this message is not the intended recipient, please take notice that any use, copying, printing, forwarding or distribution of this message, in any form, is strictly prohibited. If you have received this message in error, please immediately notify the Baptist Health Care Privacy Officer at (850) 434-4472 and/or forward the message to hipaa@bhcpns.org and delete or destroy all copies of this message.

--Boundary_(ID_yz7aHkNy157/MFOVnjMuoA)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HQS006GR6LRK6@hubbard.azu.nl>; Wed, 31 Dec 2003 23:32:17 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2003123123321418894 ; Wed, 31 Dec 2003 23:32:14 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id XAA27199; Wed, 31 Dec 2003 23:33:23 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma027194; Wed, 31 Dec 2003 23:33:08 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id OAA11404 for linac-eng-list; Wed, 31 Dec 2003 14:58:46 -0600 (CST) Received: from PHSXCHICI4.partners.org (phsxchici4.mgh.harvard.edu [132.183.118.57]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id OAA11400 for ; Wed, 31 Dec 2003 14:58:44 -0600 (CST) Received: by phsxchici4.mgh.harvard.edu with Internet Mail Service (5.5.2657.72) id ; Wed, 31 Dec 2003 15:58:18 -0500 Date: Wed, 31 Dec 2003 15:58:10 -0500 From: "Maddox, Buford J" Subject: RE: Varian 6/100 product brochure Sender: owner-linac-eng@plato.aristotle.net To: 'Larry Beach PhD' , Xraytherapy@aol.com, linac-eng@plato.aristotle.net Message-id: <36298D09ED1AD311B4DC0008C7F4D4E111466302@phsexch6.partners.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_D3YR8Gpj1Mu9JRB/Uf5JWA)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 31 Dec 2003 15:58:10 -0500 From: "Maddox, Buford J" Subject: RE: Varian 6/100 product brochure Sender: owner-linac-eng@plato.aristotle.net To: 'Larry Beach PhD' , Xraytherapy@aol.com, linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_D3YR8Gpj1Mu9JRB/Uf5JWA) Content-type: text/plain; charset=ISO-8859-1 I remember when we started the Radiosurgery on the SN 132 unit here in the 80's, I think the first one in the US. Wendell Lutz, Phd and Ken Winston, MD were the principals. We had to design and make a lot of our own stuff, more or less, adapting headframes from neurosurgery. I modified the machine for motion disable. It had been installed so accurately by Varian's Jimmy Lund that no realignment was necessary! Like others, it is still has a very good isocenter, some jaw wear. But the couch no longer runs true vertically, so setups are done without depending on that. We did the surgeries at night, after normal use in the daytime. what a battle to get it to do arcs at 2.75mu/deg! Because of the use for radiosurgery, not wanting patients to have to go through the mounting of the frame twice, we invested in a great depth of parts, far beyond normal spares. In 1991 we built a dedicated room with a 600c, collaborating with Varian. It has been upgraded many times since, finally to a Novalis configuration. Ancient history from old timers! Jerry -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Larry Beach PhD Sent: Monday, December 29, 2003 4:15 PM To: Maddox, Buford J; Xraytherapy@aol.com; linac-eng@plato.aristotle.net Subject: RE: Varian 6/100 product brochure Jerry / Doug, We have Clinac 6-100, S/N 127. Stable as a rock. Used primarily for radiosurgery. We'll probably be using your refurbished parts in a year or so! Sorry. No brochure. Larry Larry Beach, Ph.D. Cancer Center at Lexington Clinic 1401 Harrodsburg Road, A-100 Lexington, KY 40504 (859) 258-6711 -----Original Message----- From: Maddox, Buford J [mailto:JMADDOX@LROC.HARVARD.EDU] Sent: Monday, December 29, 2003 10:25 AM To: 'Xraytherapy@aol.com'; linac-eng@plato.aristotle.net Subject: RE: Varian 6/100 product brochure YES. Also still have the machine, which will be replaced next summer. SN 132. Just for fun, who has an older one? Jerry -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Xraytherapy@aol.com Sent: Friday, December 26, 2003 9:21 AM To: linac-eng@plato.aristotle.net Subject: Varian 6/100 product brochure Does anyone, buy chance, have a copy of a Varian Clinac 6/100 product brochure? Doug Steers Danbury Engineering Inc. 149-153 Grassy Plain St. Unit 6C, REAR DOOR Bethel, CT 06801 203-748-5107 www.danburyengineering.com --Boundary_(ID_D3YR8Gpj1Mu9JRB/Uf5JWA) Content-type: text/html; charset=ISO-8859-1
I remember when we started the Radiosurgery on the SN 132 unit here in the 80's, I think the first one in the US.  Wendell Lutz, Phd and Ken Winston, MD were the principals.  We had to design and make a lot of our own stuff, more or less, adapting headframes from neurosurgery.   I modified the machine for motion disable.  It had been installed so accurately by Varian's Jimmy Lund that no realignment was necessary!  Like others, it is still has a very good isocenter, some jaw wear.  But the couch no longer runs true vertically, so setups are done without depending on that.  We did the surgeries at night, after normal use in the daytime. what a battle to get it to do arcs at 2.75mu/deg! 
 
Because of the use for radiosurgery, not wanting patients to have to go through the mounting of the frame twice,  we invested in a great depth of parts, far beyond normal spares. 
 
In 1991 we built a dedicated room with a 600c, collaborating with Varian.  It has been upgraded many times since, finally to a Novalis configuration. 
 
Ancient history from old timers!
 
Jerry
-----Original Message-----
From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Larry Beach PhD
Sent: Monday, December 29, 2003 4:15 PM
To: Maddox, Buford J; Xraytherapy@aol.com; linac-eng@plato.aristotle.net
Subject: RE: Varian 6/100 product brochure

Jerry / Doug,
   We have Clinac 6-100, S/N 127. Stable as a rock. Used primarily for radiosurgery.
We'll probably be using your refurbished parts in a year or so!
   Sorry. No brochure.
                Larry
 
Larry Beach, Ph.D.

Cancer Center at Lexington Clinic
1401 Harrodsburg Road,  A-100
Lexington, KY 40504
(859) 258-6711

-----Original Message-----
From: Maddox, Buford J [mailto:JMADDOX@LROC.HARVARD.EDU]
Sent: Monday, December 29, 2003 10:25 AM
To: 'Xraytherapy@aol.com'; linac-eng@plato.aristotle.net
Subject: RE: Varian 6/100 product brochure

YES.  Also still have the machine, which will be replaced next summer.  SN 132.  Just for fun, who has an older one?
 
Jerry
-----Original Message-----
From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Xraytherapy@aol.com
Sent: Friday, December 26, 2003 9:21 AM
To: linac-eng@plato.aristotle.net
Subject: Varian 6/100 product brochure

Does anyone, buy chance, have a copy of a Varian Clinac 6/100 product brochure?

Doug Steers
Danbury Engineering Inc.
149-153 Grassy Plain St.
Unit 6C, REAR DOOR
Bethel, CT 06801
203-748-5107
www.danburyengineering.com
--Boundary_(ID_D3YR8Gpj1Mu9JRB/Uf5JWA)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HQS0090798I7X@hubbard.azu.nl>; Thu, 1 Jan 2004 00:29:08 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004010100290615352 ; Thu, 01 Jan 2004 00:29:06 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id AAA01041; Thu, 01 Jan 2004 00:30:15 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma000991; Thu, 01 Jan 2004 00:29:50 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id PAA12142 for linac-eng-list; Wed, 31 Dec 2003 15:49:06 -0600 (CST) Received: from uihc-bh.uihc.uiowa.edu (uihc-bh.uihc.uiowa.edu [129.255.210.35]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id PAA12138 for ; Wed, 31 Dec 2003 15:49:04 -0600 (CST) Received: from uihc-mail.uihc.uiowa.edu ([129.255.242.85]) by uihc-bh.uihc.uiowa.edu with Microsoft SMTPSVC(5.0.2195.6713); Wed, 31 Dec 2003 15:49:04 -0600 Date: Wed, 31 Dec 2003 15:49:04 -0600 From: "Schebler, Joe" Subject: CL-4 #238 still in use at Univ of Iowa Hospital Sender: owner-linac-eng@plato.aristotle.net To: Linac-Eng@plato.aristotle.net Message-id: MIME-version: 1.0 Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 8bit Precedence: bulk X-MimeOLE: Produced By Microsoft Exchange V6.0.6375.0 content-class: urn:content-classes:message Thread-Topic: CL-4 #238 still in use at Univ of Iowa Hospital Thread-Index: AcPP6FxTGd4CHvAfSt+m2fv3SZ3hAQ== X-OriginalArrivalTime: 31 Dec 2003 21:49:04.0315 (UTC) FILETIME=[E89798B0:01C3CFE7] X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id PAA12139 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 31 Dec 2003 15:49:04 -0600 From: "Schebler, Joe" Subject: CL-4 #238 still in use at Univ of Iowa Hospital Sender: owner-linac-eng@plato.aristotle.net To: Linac-Eng@plato.aristotle.net X-MimeOLE: Produced By Microsoft Exchange V6.0.6375.0 content-class: urn:content-classes:message Thread-Topic: CL-4 #238 still in use at Univ of Iowa Hospital Thread-Index: AcPP6FxTGd4CHvAfSt+m2fv3SZ3hAQ== X-OriginalArrivalTime: 31 Dec 2003 21:49:04.0315 (UTC) FILETIME=[E89798B0:01C3CFE7] X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id PAA12139 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Happy new year to everyone listening!  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HQV00DJM37Q4K@hubbard.azu.nl>; Fri, 2 Jan 2004 13:11:51 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004010213114923965 ; Fri, 02 Jan 2004 13:11:49 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id NAA12981; Fri, 02 Jan 2004 13:12:59 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma012920; Fri, 02 Jan 2004 13:12:22 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id EAA03561 for linac-eng-list; Fri, 02 Jan 2004 04:30:52 -0600 (CST) Received: from bhs.org (spfldrelay.bhs.org [141.154.134.26]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id EAA03557 for ; Fri, 02 Jan 2004 04:30:51 -0600 (CST) Received: from ([172.17.1.7]) by spfldrelay.bhs.org with ESMTP ; Fri, 02 Jan 2004 05:30:25 -0500 (EST) Received: from bhsexc3.bhs.org ([172.16.183.3]) by bhsexc2.bhs.org with Microsoft SMTPSVC(5.0.2195.5329); Fri, 02 Jan 2004 05:30:25 -0500 Date: Fri, 02 Jan 2004 05:30:25 -0500 From: "Patnaude, Peter" Subject: RE: Looking for head hunter Sender: owner-linac-eng@plato.aristotle.net To: Chris Cc: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 Content-type: text/plain; charset=utf-8 Content-transfer-encoding: 8bit Precedence: bulk X-MimeOLE: Produced By Microsoft Exchange V6.0.6487.1 content-class: urn:content-classes:message Thread-Topic: Looking for head hunter Thread-Index: AcPP/tzMhEqL1rCaRq2KUGEsK4vIiABG1wMe X-OriginalArrivalTime: 02 Jan 2004 10:30:25.0591 (UTC) FILETIME=[6F2AE470:01C3D11B] X-MIME-Autoconverted: from base64 to 8bit by plato.aristotle.net id EAA03558 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 02 Jan 2004 05:30:25 -0500 From: "Patnaude, Peter" Subject: RE: Looking for head hunter Sender: owner-linac-eng@plato.aristotle.net To: Chris Cc: linac-eng@plato.aristotle.net X-MimeOLE: Produced By Microsoft Exchange V6.0.6487.1 content-class: urn:content-classes:message Thread-Topic: Looking for head hunter Thread-Index: AcPP/tzMhEqL1rCaRq2KUGEsK4vIiABG1wMe X-OriginalArrivalTime: 02 Jan 2004 10:30:25.0591 (UTC) FILETIME=[6F2AE470:01C3D11B] X-MIME-Autoconverted: from base64 to 8bit by plato.aristotle.net id EAA03558 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Sorry from usa northern MA. Peter Patnaude 72 Sunnybrook RD. Springfield MA. 01119 We are installing four new machine at this time so im running around cleaning up after every one. I will not be ready to do anything till after this new building is up and running. But i will be looking for steady temp no snow....... ----Original Message----- From: Chris [mailto:chris-u@primex.co.uk] Sent: Wed 12/31/2003 11:28 AM To: Patnaude, Peter Cc: Subject: Re: Looking for head hunter er well you will have to tell us where you are so we know if its warmer or not! there is no snow here but its not warm! ----- Original Message ----- From: "Patnaude, Peter" To: Sent: Tuesday, December 30, 2003 10:37 AM Subject: Looking for head hunter > Been working in field for for over 20 year looking for a move for me and wife to warmer area. Tired of snow. > ----------------------------------------- CONFIDENTIALITY NOTICE: This email communication and any attachments may contain confidential and privileged information for the use of the designated recipients named above. If you are not the intended recipient, you are hereby notified that you have received this communication in error and that any review, disclosure, dissemination, distribution or copying of it or its contents is prohibited. If you have received this communication in error, please reply to the sender immediately or by telephone at (413) 794-0000 and destroy all copies of this communication and any attachments. For further information regarding Baystate Health System's privacy policy, please visit our Internet web site at http://www.baystatehealth.com.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HQV00LM2BP9VP@hubbard.azu.nl>; Fri, 2 Jan 2004 16:15:10 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004010216150908456 ; Fri, 02 Jan 2004 16:15:09 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id QAA29400; Fri, 02 Jan 2004 16:16:18 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma029367; Fri, 02 Jan 2004 16:15:46 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id HAA05917 for linac-eng-list; Fri, 02 Jan 2004 07:44:09 -0600 (CST) Received: from c002.snv.cp.net (h001.c002.snv.cp.net [209.228.32.165]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id HAA05913 for ; Fri, 02 Jan 2004 07:44:07 -0600 (CST) Received: (cpmta 22891 invoked from network); Fri, 02 Jan 2004 05:44:06 -0800 Received: from 209.228.32.169 (HELO mail.peoplepc.com.criticalpath.net) by smtp.peoplepc.com (209.228.32.165) with SMTP; Fri, 02 Jan 2004 05:44:06 -0800 Received: from [199.250.65.70] by mail.peoplepc.com with HTTP; Fri, 02 Jan 2004 05:44:05 -0800 (PST) Date: Fri, 02 Jan 2004 05:44:05 -0800 (PST) From: Michael Lipka Subject: 3T error message on pendant ver C1.41 Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <20040102054406.573.h005.c002.wm@mail.peoplepc.com.criticalpath.net> MIME-version: 1.0 X-Mailer: Web Mail 5.6.0-2_sol28 Content-type: text/plain; charset=iso-8859-1 Content-disposition: inline Content-transfer-encoding: 7bit Precedence: bulk X-Sent: 2 Jan 2004 13:44:06 GMT X-Sent-From: acme007@peoplepc.com X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 02 Jan 2004 05:44:05 -0800 (PST) From: Michael Lipka Subject: 3T error message on pendant ver C1.41 Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Content-disposition: inline X-Sent: 2 Jan 2004 13:44:06 GMT X-Sent-From: acme007@peoplepc.com X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This pendant is a red display. It seems to work fine for a while and then goes into crazy lockup mode. Error 3T is displayed. Nothing in my service manuals or ref books discribes error codes. Does anyone out there know what this is and what the problem stems from?? Thank You!! Senior Imaging Specialist Clinical Engineering Department All Saints Healthcare System 3801 Spring Street Racine,WI 53405 ________________________________________________ PeoplePC: It's for people. And it's just smart. http://www.peoplepc.com  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HQV000GRETTUX@hubbard.azu.nl>; Fri, 2 Jan 2004 17:22:43 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004010217224006296 ; Fri, 02 Jan 2004 17:22:40 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id RAA05372; Fri, 02 Jan 2004 17:23:50 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma005348; Fri, 02 Jan 2004 17:23:24 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id IAA06745 for linac-eng-list; Fri, 02 Jan 2004 08:56:14 -0600 (CST) Received: from hotmail.com (bay9-f14.bay9.hotmail.com [64.4.47.14]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id IAA06741 for ; Fri, 02 Jan 2004 08:56:13 -0600 (CST) Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Fri, 02 Jan 2004 06:55:42 -0800 Received: from 4.72.69.158 by by9fd.bay9.hotmail.msn.com with HTTP; Fri, 02 Jan 2004 14:55:42 +0000 (GMT) Date: Fri, 02 Jan 2004 09:55:42 -0500 From: Jose Villegas Subject: RE: 3T error message on pendant ver C1.41 Sender: owner-linac-eng@plato.aristotle.net X-Sender: villegaj@hotmail.com To: acme007@peoplepc.com, linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 Content-type: text/html Content-transfer-encoding: quoted-printable Precedence: bulk X-Originating-IP: [4.72.69.158] X-Originating-Email: [villegaj@hotmail.com] X-OriginalArrivalTime: 02 Jan 2004 14:55:42.0881 (UTC) FILETIME=[7E9C9910:01C3D140] X-MIME-Autoconverted: from 8bit to quoted-printable by plato.aristotle.net id IAA06745 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 02 Jan 2004 09:55:42 -0500 From: Jose Villegas Subject: RE: 3T error message on pendant ver C1.41 Sender: owner-linac-eng@plato.aristotle.net X-Sender: villegaj@hotmail.com To: acme007@peoplepc.com, linac-eng@plato.aristotle.net X-Originating-IP: [4.72.69.158] X-Originating-Email: [villegaj@hotmail.com] X-OriginalArrivalTime: 02 Jan 2004 14:55:42.0881 (UTC) FILETIME=[7E9C9910:01C3D140] X-MIME-Autoconverted: from 8bit to quoted-printable by plato.aristotle.net id IAA06745 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f

 =

3T (Thumb wheel #3) is your problem. Most o= f the time the tw spring will not center, also check the cable. If proble= m persist, try the processor.  

Good luck.

Jose. <= /SPAN>

 <= /SPAN>

 

>From: "Michael Lipka"

>To: linac-eng@plato.aristotle.net=20
>Subject: 3T error message on pendant ver C1.41=20
>Date: Fri, 02 Jan 2004 05:44:05 -0800 (PST)=20
>=20
>This pendant is a red display. It seems to work fine=20
>for a while and then goes into crazy lockup mode. Error=20
>3T is displayed. Nothing in my service manuals or ref=20
>books discribes error codes. Does anyone out there know=20
>what this is and what the problem stems from?? Thank=20
>You!!=20
>=20
>Senior Imaging Specialist=20
>Clinical Engineering Department=20
>All Saints Healthcare System=20
>3801 Spring Street=20
>Racine,WI 53405=20
>________________________________________________=20
>PeoplePC:  It's for people. And it's just smart.= =20
>http://www.peoplepc.com=20

Expand your wine savvy =97 and get some great new recipes = =97 at MSN Wine.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HQV002D9GBB65@hubbard.azu.nl>; Fri, 2 Jan 2004 17:54:49 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004010217544618956 ; Fri, 02 Jan 2004 17:54:46 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id RAA07541; Fri, 02 Jan 2004 17:55:55 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma007521; Fri, 02 Jan 2004 17:55:40 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id JAA07153 for linac-eng-list; Fri, 02 Jan 2004 09:27:24 -0600 (CST) Received: from mail14.messagelabs.com (mail14.messagelabs.com [212.125.75.19]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id JAA07149 for ; Fri, 02 Jan 2004 09:27:22 -0600 (CST) Received: (qmail 14937 invoked from network); Fri, 02 Jan 2004 15:26:50 +0000 Received: from host217-37-197-245.in-addr.btopenworld.com (HELO CHEXCHANGE1.cromwellhospital.com) (217.37.197.245) by server-13.tower-14.messagelabs.com with SMTP; Fri, 02 Jan 2004 15:26:50 +0000 Received: by CHEXCHANGE1.cromwellhospital.com with Internet Mail Service (5.5.2650.21) id ; Fri, 02 Jan 2004 15:30:05 +0000 Date: Fri, 02 Jan 2004 15:30:03 +0000 From: Kerry Clark Subject: RE: 3T error message on pendant ver C1.41 Sender: owner-linac-eng@plato.aristotle.net To: 'Michael Lipka' , linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2650.21) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-VirusChecked: Checked X-Env-Sender: Kerry.Clark@Cromwellhospital.com X-Msg-Ref: server-13.tower-14.messagelabs.com!1073057209!187164 X-StarScan-Version: 5.1.15; banners=cromwellhospital.com,-,- X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 02 Jan 2004 15:30:03 +0000 From: Kerry Clark Subject: RE: 3T error message on pendant ver C1.41 Sender: owner-linac-eng@plato.aristotle.net To: 'Michael Lipka' , linac-eng@plato.aristotle.net X-VirusChecked: Checked X-Env-Sender: Kerry.Clark@Cromwellhospital.com X-Msg-Ref: server-13.tower-14.messagelabs.com!1073057209!187164 X-StarScan-Version: 5.1.15; banners=cromwellhospital.com,-,- X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f 3T will be the 3rd thumb wheel down, is it returning to the central (neutral) position? If you press Room and Enter together you should get a display of all the thumb wheels, as each is moved the display increments a,b,c etc in one direction and A,B,C etc (clear cancels) the thumb wheels should just be a dash in neutral. Kerry -----Original Message----- From: Michael Lipka [mailto:acme007@peoplepc.com] Sent: 02 January 2004 13:44 To: linac-eng@plato.aristotle.net Subject: 3T error message on pendant ver C1.41 This pendant is a red display. It seems to work fine for a while and then goes into crazy lockup mode. Error 3T is displayed. Nothing in my service manuals or ref books discribes error codes. Does anyone out there know what this is and what the problem stems from?? Thank You!! Senior Imaging Specialist Clinical Engineering Department All Saints Healthcare System 3801 Spring Street Racine,WI 53405 ________________________________________________ PeoplePC: It's for people. And it's just smart. http://www.peoplepc.com ________________________________________________________________________ This e-mail has been scanned for all viruses by Star Internet. The service is powered by MessageLabs. For more information on a proactive anti-virus service working around the clock, around the globe, visit: http://www.star.net.uk ________________________________________________________________________ ************************************************************************* Privileged or Confidential Information may be contained in this message. If you are not the addressee of this message (or responsible for its delivery to the addressee), you may not review or copy it, deliver it to anyone else or use information in it. In such a case, you should destroy this message and kindly notify the sender by reply email. Internet communications are not secure and therefore the Cromwell Hospital does not accept legal responsibility for the contents of this message. Although the Cromwell Hospital operates anti-virus programs, it does not accept responsibility for any damage whatsoever that is caused by viruses being passed. Opinions, conclusions and other information in this message that do not relate to the official business of the Cromwell Hospital are neither given nor endorsed by it. Thank you. ************************************************************************* ________________________________________________________________________ This e-mail has been scanned for all viruses by Star Internet. The service is powered by MessageLabs. For more information on a proactive anti-virus service working around the clock, around the globe, visit: http://www.star.net.uk ________________________________________________________________________  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HQV008DGPIH17@hubbard.azu.nl>; Fri, 2 Jan 2004 21:13:31 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004010221132818823 ; Fri, 02 Jan 2004 21:13:28 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id VAA20649; Fri, 02 Jan 2004 21:14:39 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma020645; Fri, 02 Jan 2004 21:14:14 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id MAA09287 for linac-eng-list; Fri, 02 Jan 2004 12:30:32 -0600 (CST) Received: from server24.totalchoicehosting.com (server24.totalchoicehosting.com [207.44.242.2]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id MAA09283 for ; 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Fri, 02 Jan 2004 12:03:51 -0800 (PST) Date: Fri, 02 Jan 2004 12:03:51 -0800 (PST) From: Michael Subject: RE: 3T error message on pendant ver C1.41 Sender: owner-linac-eng@plato.aristotle.net To: Kerry.Clark@Cromwellhospital.com Cc: linac-eng@plato.aristotle.net Message-id: <20040102120352.4765.h010.c002.wm@mail.peoplepc.com.criticalpath.net> MIME-version: 1.0 X-Mailer: Web Mail 5.6.0-2_sol28 Content-type: text/plain; charset=iso-8859-1 Content-disposition: inline Content-transfer-encoding: 7bit Precedence: bulk X-Sent: 2 Jan 2004 20:03:52 GMT X-Sent-From: acme007@peoplepc.com X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 02 Jan 2004 12:03:51 -0800 (PST) From: Michael Subject: RE: 3T error message on pendant ver C1.41 Sender: owner-linac-eng@plato.aristotle.net To: Kerry.Clark@Cromwellhospital.com Cc: linac-eng@plato.aristotle.net Content-disposition: inline X-Sent: 2 Jan 2004 20:03:52 GMT X-Sent-From: acme007@peoplepc.com X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Thank you all for the info. I have ordered out new softpots. Michael Lipka On Fri, 2 Jan 2004 15:30:03 -0000 , Kerry Clark wrote: > > 3T will be the 3rd thumb wheel down, is it returning to > the central > (neutral) position? > If you press Room and Enter together you should get a > display of all the > thumb wheels, as each is moved the display increments > a,b,c etc in one > direction and A,B,C etc (clear cancels) the thumb > wheels should just be a > dash in neutral. > > Kerry > > -----Original Message----- > From: Michael Lipka [mailto:acme007@peoplepc.com] > Sent: 02 January 2004 13:44 > To: linac-eng@plato.aristotle.net > Subject: 3T error message on pendant ver C1.41 > > > This pendant is a red display. It seems to work fine > for a while and then goes into crazy lockup mode. Error > 3T is displayed. Nothing in my service manuals or ref > books discribes error codes. Does anyone out there know > what this is and what the problem stems from?? Thank > You!! > > Senior Imaging Specialist > Clinical Engineering Department > All Saints Healthcare System > 3801 Spring Street > Racine,WI 53405 > ________________________________________________ > PeoplePC: It's for people. And it's just smart. > http://www.peoplepc.com > > ________________________________________________________________________ > This e-mail has been scanned for all viruses by Star > Internet. The > service is powered by MessageLabs. For more information > on a proactive > anti-virus service working around the clock, around the > globe, visit: > http://www.star.net.uk > ________________________________________________________________________ > > > ************************************************************************* > Privileged or Confidential Information may be contained > in this message. If > you are not the addressee of this message (or > responsible for its delivery > to the addressee), you may not review or copy it, > deliver it to anyone else > or use information in it. In such a case, you should > destroy this message > and kindly notify the sender by reply email. > > Internet communications are not secure and therefore > the Cromwell Hospital > does not accept legal responsibility for the contents > of this message. > Although the Cromwell Hospital operates anti-virus > programs, it does not > accept responsibility for any damage whatsoever that is > caused by viruses > being passed. Opinions, conclusions and other > information in this message > that do not relate to the official business of the > Cromwell Hospital are > neither given nor endorsed by it. Thank you. > ************************************************************************* > > ________________________________________________________________________ > This e-mail has been scanned for all viruses by Star > Internet. The > service is powered by MessageLabs. For more information > on a proactive > anti-virus service working around the clock, around the > globe, visit: > http://www.star.net.uk > ________________________________________________________________________ Michael (acme007@peoplepc.com) ________________________________________________ PeoplePC: It's for people. And it's just smart. http://www.peoplepc.com  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HR000LBKNKDW5@hubbard.azu.nl>; Mon, 5 Jan 2004 13:19:30 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004010513192421923 ; Mon, 05 Jan 2004 13:19:24 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id NAA07133; Mon, 05 Jan 2004 13:20:34 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma007033; Mon, 05 Jan 2004 13:19:59 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id EAA19267 for linac-eng-list; Mon, 05 Jan 2004 04:30:36 -0600 (CST) Received: from mail9.nhs.uk (mail9.nhs.uk [213.120.235.87]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id EAA19263 for ; Mon, 05 Jan 2004 04:30:34 -0600 (CST) Received: from [194.62.42.123] (helo=relayint1.nhs.uk) by mail9.nhs.uk with esmtp (Exim 4.10) id 1AdRzm-0002UD-00 for Linac-eng@plato.aristotle.net; Mon, 05 Jan 2004 10:30:02 +0000 Received: from relay.nhs.uk (194.62.42.144) by relayint1.nhs.uk (Syntegra-I1 7.0.008) id 3FB9F76600866168 for Linac-eng@plato.aristotle.net; Mon, 05 Jan 2004 10:30:02 +0000 Received: from bean.ruh-bath.nhs.uk (194.189.240.90) by relay.nhs.uk (Syntegra-4 7.0.008) (authenticated as smtp-in_ruh-bath_swest_nhs_uk@es2002.nhs.uk) id 3FF59A9500022F48 for Linac-eng@plato.aristotle.net; Mon, 05 Jan 2004 10:30:02 +0000 Received: by bean.ruh-bath.nhs.uk with Internet Mail Service (5.5.2653.19) id ; Mon, 05 Jan 2004 10:30:01 +0000 Date: Mon, 05 Jan 2004 10:29:56 +0000 From: "Amesbury, Ross" Subject: 6/100 Sender: owner-linac-eng@plato.aristotle.net To: "'Linac-eng@plato.aristotle.net'" Message-id: <79AB7147AE064F4E9F7A402649D0E2D80A9A20@courgette.ruh-bath.nhs.uk> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 05 Jan 2004 10:29:56 +0000 From: "Amesbury, Ross" Subject: 6/100 Sender: owner-linac-eng@plato.aristotle.net To: "'Linac-eng@plato.aristotle.net'" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hi All I have surplus to requirements a Magnetron and De queuing Thyrotron both for a 6/100 machine the Magnetron is used but was OK when it was used last the, Thyrotron is new and unused. Both items are free of charge but any carriage must be paid for. Ross Amesbury Bath UK  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HR300KGI74LPE@hubbard.azu.nl>; Tue, 6 Jan 2004 22:17:11 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004010622170930962 ; Tue, 06 Jan 2004 22:17:09 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id WAA03783; Tue, 06 Jan 2004 22:18:21 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma003752; Tue, 06 Jan 2004 22:18:11 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id NAA15209 for linac-eng-list; Tue, 06 Jan 2004 13:28:10 -0600 (CST) Received: from hotmail.com (bay9-f53.bay9.hotmail.com [64.4.47.53]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id NAA15205 for ; Tue, 06 Jan 2004 13:28:08 -0600 (CST) Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Tue, 06 Jan 2004 11:27:37 -0800 Received: from 207.87.83.25 by by9fd.bay9.hotmail.msn.com with HTTP; Tue, 06 Jan 2004 19:27:37 +0000 (GMT) Date: Tue, 06 Jan 2004 14:27:37 -0500 From: Jose Villegas Subject: 21EX Couch Vetiral motion Sender: owner-linac-eng@plato.aristotle.net X-Sender: villegaj@hotmail.com To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 Content-type: text/html Precedence: bulk X-Originating-IP: [207.87.83.25] X-Originating-Email: [villegaj@hotmail.com] X-OriginalArrivalTime: 06 Jan 2004 19:27:37.0971 (UTC) FILETIME=[24D0C430:01C3D48B] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 06 Jan 2004 14:27:37 -0500 From: Jose Villegas Subject: 21EX Couch Vetiral motion Sender: owner-linac-eng@plato.aristotle.net X-Sender: villegaj@hotmail.com To: linac-eng@plato.aristotle.net X-Originating-IP: [207.87.83.25] X-Originating-Email: [villegaj@hotmail.com] X-OriginalArrivalTime: 06 Jan 2004 19:27:37.0971 (UTC) FILETIME=[24D0C430:01C3D48B] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f
Hi group.
 
I have a problme with the couch vertical motion. Every time I move the Ling. Lat. or Rot. The vertical will move down (-106volt).  Has anybody seen this?
 
Thanks
 
Jose

Check your PC for viruses with the FREE McAfee online computer scan.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HR3000GLC28I7@hubbard.azu.nl>; Wed, 7 Jan 2004 00:03:46 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004010700034309986 ; Wed, 07 Jan 2004 00:03:43 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id AAA12952; Wed, 07 Jan 2004 00:04:55 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma012926; Wed, 07 Jan 2004 00:04:29 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id PAA17806 for linac-eng-list; Tue, 06 Jan 2004 15:27:30 -0600 (CST) Received: from PHSEXCHICO2.Partners.org (phsexchico2.partners.org [170.223.254.20]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id PAA17795 for ; Tue, 06 Jan 2004 15:27:29 -0600 (CST) Received: by phsexchico2.partners.org with Internet Mail Service (5.5.2657.72) id ; Tue, 06 Jan 2004 16:26:57 -0500 Date: Tue, 06 Jan 2004 16:26:56 -0500 From: "Maddox, Buford J" Subject: RE: 21EX Couch Vetiral motion Sender: owner-linac-eng@plato.aristotle.net To: 'Jose Villegas' , linac-eng@plato.aristotle.net Message-id: <36298D09ED1AD311B4DC0008C7F4D4E11146630D@phsexch6.partners.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_H+qujsZ9iRcSnyttyNsbsw)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 06 Jan 2004 16:26:56 -0500 From: "Maddox, Buford J" Subject: RE: 21EX Couch Vetiral motion Sender: owner-linac-eng@plato.aristotle.net To: 'Jose Villegas' , linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_H+qujsZ9iRcSnyttyNsbsw) Content-type: text/plain; charset=iso-8859-1 Interesting! Don't have an ex till next year. On my the 2100c I would put up the service screen in motor status and see if the commands are there for all those things to move. Decide whether to go for pendants and controls or for power and power wires. Does same thing happen from console motions? Couch panels? Just a couple of ideas until an ex jockey shows up. Jerry -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Jose Villegas Sent: Tuesday, January 06, 2004 2:28 PM To: linac-eng@plato.aristotle.net Subject: 21EX Couch Vetiral motion Hi group. I have a problme with the couch vertical motion. Every time I move the Ling. Lat. or Rot. The vertical will move down (-106volt). Has anybody seen this? Thanks Jose _____ Check your PC for viruses with the FREE McAfee online computer scan. --Boundary_(ID_H+qujsZ9iRcSnyttyNsbsw) Content-type: text/html; charset=iso-8859-1
Interesting!  Don't have an ex till next year.  On my the 2100c I would put up the service screen in motor status and see if the commands are there for all those things to move.  Decide whether to go for pendants and controls or for power and power wires.  Does same thing happen from console motions?  Couch panels?  Just a couple of ideas until an ex jockey shows up.
Jerry
-----Original Message-----
From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Jose Villegas
Sent: Tuesday, January 06, 2004 2:28 PM
To: linac-eng@plato.aristotle.net
Subject: 21EX Couch Vetiral motion

Hi group.
 
I have a problme with the couch vertical motion. Every time I move the Ling. Lat. or Rot. The vertical will move down (-106volt).  Has anybody seen this?
 
Thanks
 
Jose

Check your PC for viruses with the FREE McAfee online computer scan.
--Boundary_(ID_H+qujsZ9iRcSnyttyNsbsw)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HR30029RD0V3G@hubbard.azu.nl>; Wed, 7 Jan 2004 00:24:34 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004010700243120027 ; Wed, 07 Jan 2004 00:24:31 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id AAA14800; Wed, 07 Jan 2004 00:25:42 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma014792; Wed, 07 Jan 2004 00:25:40 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id OAA15923 for linac-eng-list; Tue, 06 Jan 2004 14:26:02 -0600 (CST) Received: from cwav01.cw.bc.ca (mail2.cw.bc.ca [207.23.159.180]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id OAA15919 for ; Tue, 06 Jan 2004 14:26:01 -0600 (CST) Received: From phsaex01.phsa.ca ([10.1.38.75]) by cwav01.cw.bc.ca (WebShield SMTP v4.5 MR1a); id 1073420729491; Tue, 06 Jan 2004 12:25:29 -0800 Received: from server106.phsa.ca ([192.168.214.106]) by phsaex01.phsa.ca with Microsoft SMTPSVC(5.0.2195.5329); Tue, 06 Jan 2004 12:25:41 -0800 Received: from server17.bccancer.bc.ca ([205.233.164.254]) by server106.phsa.ca with Microsoft SMTPSVC(5.0.2195.5329); Tue, 06 Jan 2004 12:25:41 -0800 Received: by SERVER17 with Internet Mail Service (5.5.2653.19) id ; Tue, 06 Jan 2004 12:17:25 -0800 Date: Tue, 06 Jan 2004 12:28:21 -0800 From: "Patrick Wong (VICC)" Subject: RE: 21EX Couch Vertical motion Sender: owner-linac-eng@plato.aristotle.net To: 'Jose Villegas' , linac-eng@plato.aristotle.net Message-id: <6BAF4D075F07D411B30900508B94CBA007A4F7FC@SERVER20> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_+3F363E4FGxNNfJs7Pozrw)" Precedence: bulk X-OriginalArrivalTime: 06 Jan 2004 20:25:41.0131 (UTC) FILETIME=[40F0CDB0:01C3D493] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 06 Jan 2004 12:28:21 -0800 From: "Patrick Wong (VICC)" Subject: RE: 21EX Couch Vertical motion Sender: owner-linac-eng@plato.aristotle.net To: 'Jose Villegas' , linac-eng@plato.aristotle.net X-OriginalArrivalTime: 06 Jan 2004 20:25:41.0131 (UTC) FILETIME=[40F0CDB0:01C3D493] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_+3F363E4FGxNNfJs7Pozrw) Content-type: text/plain; charset=iso-8859-1 Hi Jose, We seen this problem on our exact couch many time. What you should do is while driving couch Lateral, Longitudinal, or Rotation make sure that couch Vertical does not drive slowly (look at Vertical drive belt while moving Lat, Long, Or Rot). Adjust R4 (offset) on couch Vertical PWM board to stop any movement. Some time the vertical movement only move couple of millimeter and the RT didn't noticed during patient setup, until it move a lot and saw the problem. Hope this help to solve your problem. Patrick Won C.T. Radiotherapy Service Technologist Det. Of medical Physics Vancouver Island Cancer Centre 2410 Lee Avenue Victoria B.C. Canada VR 6V5 Tel:(250) 519-5500 X-3737 Fax.(250)519-2024 -----Original Message----- From: Jose Villegas [mailto:villegaj@hotmail.com] Sent: Tuesday, January 06, 2004 11:28 AM To: linac-eng@plato.aristotle.net Subject: 21EX Couch Vetiral motion Hi group. I have a problme with the couch vertical motion. Every time I move the Ling. Lat. or Rot. The vertical will move down (-106volt). Has anybody seen this? Thanks Jose _____ Check your PC for viruses with the FREE McAfee online computer scan. --Boundary_(ID_+3F363E4FGxNNfJs7Pozrw) Content-type: text/html; charset=iso-8859-1
Hi Jose,

We seen this problem on our exact couch many time.

What you should do is while driving couch Lateral, Longitudinal, or Rotation make sure that couch Vertical does not drive slowly (look at Vertical drive belt while moving Lat, Long, Or Rot). Adjust R4 (offset) on couch Vertical PWM board to stop any movement.

Some time the vertical movement only move couple of millimeter and the RT didn't noticed during patient setup, until it move a lot and saw the problem.

Hope this help to solve your problem.

 

Patrick Won C.T.
Radiotherapy Service Technologist
Det. Of medical Physics
Vancouver Island Cancer Centre
2410 Lee Avenue
Victoria B.C. Canada
VR 6V5
Tel:(250) 519-5500 X-3737
Fax.(250)519-2024

 

-----Original Message-----
From: Jose Villegas [mailto:villegaj@hotmail.com]
Sent: Tuesday, January 06, 2004 11:28 AM
To: linac-eng@plato.aristotle.net
Subject: 21EX Couch Vetiral motion

Hi group.
 
I have a problme with the couch vertical motion. Every time I move the Ling. Lat. or Rot. The vertical will move down (-106volt).  Has anybody seen this?
 
Thanks
 
Jose

Check your PC for viruses with the FREE McAfee online computer scan.
--Boundary_(ID_+3F363E4FGxNNfJs7Pozrw)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HR4002CYJG17I@hubbard.azu.nl>; Wed, 7 Jan 2004 15:40:56 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004010715404829916 ; Wed, 07 Jan 2004 15:40:48 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id PAA17531; Wed, 07 Jan 2004 15:41:56 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma017376; Wed, 07 Jan 2004 15:41:07 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id GAA29646 for linac-eng-list; Wed, 07 Jan 2004 06:48:13 -0600 (CST) Received: from imsm033.netvigator.com ([218.102.21.34]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id GAA29642 for ; Wed, 07 Jan 2004 06:48:11 -0600 (CST) Received: (qmail 25141 invoked from network); Wed, 07 Jan 2004 12:47:55 +0000 Received: from pcd595076.netvigator.com (HELO kimyeung) (218.102.127.76) by imsm033.netvigator.com with SMTP; Wed, 07 Jan 2004 12:47:55 +0000 Date: Wed, 07 Jan 2004 20:37:21 +0800 From: Kim Yeung Subject: Re: Second source for air cylinder Sender: owner-linac-eng@plato.aristotle.net To: Linac Message-id: <000a01c3d51a$febef7e0$0202a8c0@kimyeung> MIME-version: 1.0 X-Mailer: Microsoft Outlook Express 6.00.2800.1158 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_VRE2GUrVWDb+OiSBENQATw)" Precedence: bulk X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 *** EOOH *** Date: Wed, 07 Jan 2004 20:37:21 +0800 From: Kim Yeung Subject: Re: Second source for air cylinder Sender: owner-linac-eng@plato.aristotle.net To: Linac X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 This is a multi-part message in MIME format. --Boundary_(ID_VRE2GUrVWDb+OiSBENQATw) Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: quoted-printable Hi Colleagues, Varian 2300CD Clinac We are looking for the second source of a carrosuel air cylinder of = which the varian part number is B83883603.=20 Could anyone advise the manufacturer and model number of the above air = cylinder? Thanks in advance. Kim Yeung --Boundary_(ID_VRE2GUrVWDb+OiSBENQATw) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: quoted-printable
Hi Colleagues,
        Varian=20 2300CD Clinac
We are looking for the second source of = a carrosuel=20 air cylinder of which the varian part number is B83883603.
 
Could anyone advise the manufacturer = and model=20 number of the above air cylinder?
 
Thanks in advance.
 
Kim Yeung
--Boundary_(ID_VRE2GUrVWDb+OiSBENQATw)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HR4006P7M8U5I@hubbard.azu.nl>; Wed, 7 Jan 2004 16:41:20 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004010716411702807 ; Wed, 07 Jan 2004 16:41:17 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id QAA00690; Wed, 07 Jan 2004 16:42:30 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma000599; Wed, 07 Jan 2004 16:42:12 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id IAA00585 for linac-eng-list; Wed, 07 Jan 2004 08:02:41 -0600 (CST) Received: from hotmail.com (sea1-f162.sea1.hotmail.com [207.68.163.162]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id IAA00581 for ; Wed, 07 Jan 2004 08:02:39 -0600 (CST) Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Wed, 07 Jan 2004 06:02:09 -0800 Received: from 159.178.80.35 by sea1fd.sea1.hotmail.msn.com with HTTP; Wed, 07 Jan 2004 14:02:08 +0000 (GMT) Date: Wed, 07 Jan 2004 14:02:08 +0000 From: David Price Subject: Position available North Fla Sender: owner-linac-eng@plato.aristotle.net X-Sender: roast_em@hotmail.com To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 Content-type: text/plain; CHARSET=US-ASCII; format=flowed Precedence: bulk X-Originating-IP: [159.178.80.35] X-Originating-Email: [roast_em@hotmail.com] X-OriginalArrivalTime: 07 Jan 2004 14:02:09.0175 (UTC) FILETIME=[D728BA70:01C3D526] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 07 Jan 2004 14:02:08 +0000 From: David Price Subject: Position available North Fla Sender: owner-linac-eng@plato.aristotle.net X-Sender: roast_em@hotmail.com To: linac-eng@plato.aristotle.net X-Originating-IP: [159.178.80.35] X-Originating-Email: [roast_em@hotmail.com] X-OriginalArrivalTime: 07 Jan 2004 14:02:09.0175 (UTC) FILETIME=[D728BA70:01C3D526] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Company: Shands HealthCare Location: US-FL-Gainesville Status: Full Time, Employee F/T evening position (3PM-11PM) available at Shands Hospital, at the University of Florida located in North Central FL. This position is responsible for maintaining 5 highly sophisticated microwave linear accelerators. Responsibilities also include maintaining the department's cobalt unit, 3 radiographic simulators and a 250 Kv orthovaltage unit. Other duties include providing mechanical and electrical support for other department. Qualifications include BS degree in Electrical Engineering or other appropriate area of specialization, or lesser formal education with appropriate yrs of directly related exp. If a graduate from an accredited college with a BS degree in an related area of specialization, 2 yrs exp in repair and installation of computer-controlled equipment or medical linear accelerators. Work exp may be substituted for up to 2 yrs of formal education on a ratio of 2 yrs exp to 1 yr of education. Strong background is req in math & science, digital & analog electronics, microprocessor control systems, mechanical aptitude, ability to draw & design mechanical & electronic support equipment to be fused in operation, maintenance & repair of radiation therapy equipment. Competitive salary & benefits offered. Call today @ 1.800.325.0367 ext. 8.5401 Gloria Parker, Human Resources, apply on-line @ www.shands.org _________________________________________________________________ Get reliable dial-up Internet access now with our limited-time introductory offer. http://join.msn.com/?page=dept/dialup  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HR400C6ORYQ8F@hubbard.azu.nl>; Wed, 7 Jan 2004 18:44:52 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004010718444916411 ; Wed, 07 Jan 2004 18:44:49 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA18438; Wed, 07 Jan 2004 18:46:01 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma018410; Wed, 07 Jan 2004 18:45:38 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id KAA02374 for linac-eng-list; Wed, 07 Jan 2004 10:02:00 -0600 (CST) Received: from c002.snv.cp.net (h008.c002.snv.cp.net [209.228.32.172]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id KAA02370 for ; Wed, 07 Jan 2004 10:01:58 -0600 (CST) Received: (cpmta 252 invoked from network); Wed, 07 Jan 2004 08:01:56 -0800 Received: from 209.228.32.175 (HELO mail.peoplepc.com.criticalpath.net) by smtp.peoplepc.com (209.228.32.172) with SMTP; Wed, 07 Jan 2004 08:01:56 -0800 Received: from [199.250.65.70] by mail.peoplepc.com with HTTP; Wed, 07 Jan 2004 08:01:56 -0800 (PST) Date: Wed, 07 Jan 2004 08:01:56 -0800 (PST) From: Michael Lipka Subject: RE: 21EX Couch Vetiral motion Sender: owner-linac-eng@plato.aristotle.net To: JMADDOX@LROC.HARVARD.EDU Cc: villegaj@hotmail.com, linac-eng@plato.aristotle.net Message-id: <20040107080156.12101.h011.c002.wm@mail.peoplepc.com.criticalpath.net> MIME-version: 1.0 X-Mailer: Web Mail 5.6.0-2_sol28 Content-type: text/plain; charset=iso-8859-1 Content-disposition: inline Content-transfer-encoding: quoted-printable Precedence: bulk X-Sent: 7 Jan 2004 16:01:56 GMT X-Sent-From: acme007@peoplepc.com X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id KAA02371 X-MIME-Autoconverted: from 8bit to quoted-printable by plato.aristotle.net id KAA02374 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 07 Jan 2004 08:01:56 -0800 (PST) From: Michael Lipka Subject: RE: 21EX Couch Vetiral motion Sender: owner-linac-eng@plato.aristotle.net To: JMADDOX@LROC.HARVARD.EDU Cc: villegaj@hotmail.com, linac-eng@plato.aristotle.net Content-disposition: inline X-Sent: 7 Jan 2004 16:01:56 GMT X-Sent-From: acme007@peoplepc.com X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id KAA02371 X-MIME-Autoconverted: from 8bit to quoted-printable by plato.aristotle.net id KAA02374 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Check in the toe of the couch base and check to make sure that all of the connections are solid. Sometimes these will seperate and strange stuff starts happening.=20 On Tue, 6 Jan 2004 16:26:56 -0500 , "Maddox, Buford J" wrote: Interesting!=A0 Don't have an ex till next year.=A0 On my the 2100c=20 I would put up the service screen in motor status and see if the commands are=20 there for all those things to move.=A0 Decide whether to go for pendants and=20 controls or for power and power wires.=A0 Does same thing happen from console=20 motions?=A0 Couch panels?=A0 Just a couple of ideas until an ex jockey=20 shows up. Jerry -----Original Message-----From:=20 owner-linac-eng@plato.aristotle.net=20 [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Jose=20 VillegasSent: Tuesday, January 06, 2004 2:28 PMTo:=20 linac-eng@plato.aristotle.netSubject: 21EX Couch Vetiral=20 motion =20 Hi group. =A0 I have a problme with the couch vertical motion. Every time I=20 move the Ling. Lat. or Rot. The vertical will move down (-106volt).=A0 Has=20 anybody seen this? =A0 Thanks =A0 Jose =20 Check your PC for viruses with=20 the FREE McAfee online computer scan.=20 Senior Imaging Specialist Clinical Engineering Department All Saints Healthcare System 3801 Spring Street Racine,WI 53405 ________________________________________________ PeoplePC: It's for people. And it's just smart.=20 http://www.peoplepc.com=20  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HR500FIQQQ95M@hubbard.azu.nl>; Thu, 8 Jan 2004 07:15:51 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004010807154321561 ; Thu, 08 Jan 2004 07:15:43 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id HAA18341; Thu, 08 Jan 2004 07:16:56 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma018329; Thu, 08 Jan 2004 07:16:52 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id WAA14760 for linac-eng-list; Wed, 07 Jan 2004 22:30:28 -0600 (CST) Received: from imo-r01.mx.aol.com (imo-r01.mx.aol.com [152.163.225.97]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id WAA14756 for ; Wed, 07 Jan 2004 22:30:27 -0600 (CST) Received: from SMcna39074@aol.com by imo-r01.mx.aol.com (mail_out_v36_r4.8.) id y.119.2da0a5df (15889) for ; Wed, 07 Jan 2004 23:29:52 -0500 (EST) Received: from aol.com (mow-d14.webmail.aol.com [205.188.139.130]) by air-id08.mx.aol.com (v97.14) with ESMTP id MAILINID84-3e113ffcdcc024; Wed, 07 Jan 2004 23:29:52 -0500 Date: Wed, 07 Jan 2004 23:29:52 -0500 From: SMcna39074@aol.com Subject: Intermittant no beam 2100cd Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <4CDCF04E.53A7CF20.0C0A0915@aol.com> MIME-version: 1.0 X-Mailer: Atlas Mailer 2.0 Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 8bit Precedence: bulk X-AOL-IP: 68.120.161.68 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 07 Jan 2004 23:29:52 -0500 From: SMcna39074@aol.com Subject: Intermittant no beam 2100cd Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-AOL-IP: 68.120.161.68 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f I have an intermittant on our 2100c/d s/n 1023. For unknown reasons the beam will just stop, any energy. Does not write to event log, gives no fault indication, gives no ready indication. Only need to hit beam on switch to restart where beam was interrupted. Was annoying, but now that we are starting IMRT, don't want the interruptions. Have replaced both Timer and Timer Interface PCBs. Key switch and blocks both changed. Happened on software version 5.4 and now on 6.2. Using original console computer. Changing K2 in modulator panel tomorrow. Any ideas? stan@ccsb.org Stan McNally Cancer Center of Santa Barbara, Ca  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HR600JHXB4U7B@hubbard.azu.nl>; Thu, 8 Jan 2004 14:36:32 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004010814362921344 ; Thu, 08 Jan 2004 14:36:29 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id OAA11830; Thu, 08 Jan 2004 14:37:41 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma011672; Thu, 08 Jan 2004 14:37:06 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id FAA19593 for linac-eng-list; Thu, 08 Jan 2004 05:51:28 -0600 (CST) Received: from server24.totalchoicehosting.com (server24.totalchoicehosting.com [207.44.242.2]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id FAA19589 for ; Thu, 08 Jan 2004 05:51:26 -0600 (CST) Received: from server24.totalchoicehosting.com ([207.44.242.2] helo=www.fikesonline.com) by server24.totalchoicehosting.com with smtp (Exim 4.24) id 1AeYgx-0000L9-8L; Thu, 08 Jan 2004 05:51:11 -0600 Received: from 143.111.100.62 (SquirrelMail authenticated user chad@fikesonline.com) by www.fikesonline.com with HTTP; Thu, 08 Jan 2004 05:51:11 -0600 (CST) Date: Thu, 08 Jan 2004 05:51:11 -0600 (CST) From: chad@fikesonline.com Subject: Re: Intermittant no beam 2100cd In-reply-to: <4CDCF04E.53A7CF20.0C0A0915@aol.com> Sender: owner-linac-eng@plato.aristotle.net To: SMcna39074@aol.com Cc: linac-eng@plato.aristotle.net Reply-to: chad@fikesonline.com Message-id: <3945.143.111.100.62.1073562671.squirrel@www.fikesonline.com> MIME-version: 1.0 Content-type: text/plain; charset=iso-8859-1 Importance: Normal Precedence: bulk User-Agent: SquirrelMail/1.4.0 X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - server24.totalchoicehosting.com X-AntiAbuse: Original Domain - plato.aristotle.net X-AntiAbuse: Originator/Caller UID/GID - [0 0] / [47 12] X-AntiAbuse: Sender Address Domain - fikesonline.com References: <4CDCF04E.53A7CF20.0C0A0915@aol.com> X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 *** EOOH *** Date: Thu, 08 Jan 2004 05:51:11 -0600 (CST) From: chad@fikesonline.com Subject: Re: Intermittant no beam 2100cd In-reply-to: <4CDCF04E.53A7CF20.0C0A0915@aol.com> Sender: owner-linac-eng@plato.aristotle.net To: SMcna39074@aol.com Cc: linac-eng@plato.aristotle.net Reply-to: chad@fikesonline.com Importance: Normal X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - server24.totalchoicehosting.com X-AntiAbuse: Original Domain - plato.aristotle.net X-AntiAbuse: Originator/Caller UID/GID - [0 0] / [47 12] X-AntiAbuse: Sender Address Domain - fikesonline.com X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 We had this before, and it turned out to be a KSOL problem. We would never see the KSOL interlock in clinical mode, but we finally caught the interlock in service mode. I think we had a loose connection on top of the klystron solenoid. Good luck, Chad Fikes > I have an intermittant on our 2100c/d s/n 1023. For unknown reasons the > beam will just stop, any energy. Does not write to event log, gives no > fault indication, gives no ready indication. Only need to hit beam on > switch to restart where beam was interrupted. Was annoying, but now that > we are starting IMRT, don't want the interruptions. Have replaced both > Timer and Timer Interface PCBs. Key switch and blocks both changed. > Happened on software version 5.4 and now on 6.2. Using original console > computer. Changing K2 in modulator panel tomorrow. Any ideas? > stan@ccsb.org > Stan McNally Cancer Center of Santa Barbara, Ca >  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HR60085GKXJ4O@hubbard.azu.nl>; Thu, 8 Jan 2004 18:08:08 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004010818080621970 ; Thu, 08 Jan 2004 18:08:06 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA23166; Thu, 08 Jan 2004 18:09:18 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma023114; Thu, 08 Jan 2004 18:09:02 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id JAA22547 for linac-eng-list; Thu, 08 Jan 2004 09:09:40 -0600 (CST) Received: from email.med.yale.edu (email.med.yale.edu [130.132.232.16]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id JAA22540 for ; Thu, 08 Jan 2004 09:09:38 -0600 (CST) Received: from yale.edu (vitalip.med.yale.edu [130.132.213.170]) by email.med.yale.edu (PMDF V6.2-X17 #30873) with ESMTP id <0HR60EWO4FFVLQ@email.med.yale.edu> for linac-eng@plato.aristotle.net; Thu, 08 Jan 2004 10:09:34 -0500 (EST) Date: Thu, 08 Jan 2004 10:09:37 -0500 From: Peter Vitali Subject: Re: Intermittant no beam 2100cd Sender: owner-linac-eng@plato.aristotle.net To: SMcna39074@aol.com Cc: linac-eng@plato.aristotle.net Message-id: <3FFD72AB.DF49EEE0@yale.edu> MIME-version: 1.0 X-Mailer: Mozilla 4.76 (Macintosh; U; PPC) Content-type: text/plain; charset=us-ascii; x-mac-type=54455854; x-mac-creator=4D4F5353 Content-transfer-encoding: 7bit Precedence: bulk X-Accept-Language: en References: <4CDCF04E.53A7CF20.0C0A0915@aol.com> X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 08 Jan 2004 10:09:37 -0500 From: Peter Vitali Subject: Re: Intermittant no beam 2100cd Sender: owner-linac-eng@plato.aristotle.net To: SMcna39074@aol.com Cc: linac-eng@plato.aristotle.net X-Accept-Language: en X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Stan: Check to wiring to K2. We had the same problem and found it to be corrosion on the pins on the connectors that the 24VDC that holds K2 up comes thru. The corrosion was on all the pins on every panel connector in the stand and modulator. If the beam drops out within two seconds of Beam On then it is the aux switch on K2 not making or K2 not holding. We skinned the wires to the K2 coil and put a meter on it. Using our closes circuit in room camera we were able to watch the voltage fluctuate. It would stay around 20-22 volts and then instantaneously drop below 19Volts and then come back up to around 22 volts. The normal voltage on the coil should be above 23.5 Vdc and steady. Another way to check if this is happening, take a 24Vdc supply, and attach it directly to the coil of the K2 relay. If you can treat all day then your problem is the 24Vdc supplied from the machine's console. If you do not have a 24Vdc supply handy, you and get it from the emergency off batteriers in the emergency pendant control box. Peter E. Vitali, CBET Therapeutic Radiological Engineer Yale New Haven Hospital 20 York Street, HRT 22 New Haven, CT. 06504 Phone: (203) 688-2948 FAX: (203) 688-3663 E-mail: peter.vitali@yale.edu As usual, everything I say may be plausibly denied at my employer's convenience... SMcna39074@aol.com wrote: > I have an intermittant on our 2100c/d s/n 1023. For unknown reasons the beam will just stop, any energy. Does not write to event log, gives no fault indication, gives no ready indication. Only need to hit beam on switch to restart where beam was interrupted. Was annoying, but now that we are starting IMRT, don't want the interruptions. Have replaced both Timer and Timer Interface PCBs. Key switch and blocks both changed. Happened on software version 5.4 and now on 6.2. Using original console computer. Changing K2 in modulator panel tomorrow. Any ideas? stan@ccsb.org > Stan McNally Cancer Center of Santa Barbara, Ca  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HR600BEGPGLII@hubbard.azu.nl>; Thu, 8 Jan 2004 19:45:58 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004010819455615168 ; Thu, 08 Jan 2004 19:45:56 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA03558; Thu, 08 Jan 2004 19:47:08 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma003528; Thu, 08 Jan 2004 19:46:36 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id LAA25106 for linac-eng-list; Thu, 08 Jan 2004 11:01:29 -0600 (CST) Received: from mercy-webappliance.mercycare.org ([66.133.93.250]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id LAA25102 for ; Thu, 08 Jan 2004 11:01:27 -0600 (CST) Received: from mail.mercycare.org(66.133.93.250) by mercy-webappliance.mercycare.org via csmap id f6d35680_41fc_11d8_80fe_003048245f6f_3319; Thu, 08 Jan 2004 11:06:33 -0600 (CST) Date: Thu, 08 Jan 2004 11:00:36 -0600 From: Tyson Long Subject: CMMS software Sender: owner-linac-eng@plato.aristotle.net To: "List Server (E-mail 2)" Message-id: MIME-version: 1.0 Content-type: text/plain; CHARSET=US-ASCII Content-transfer-encoding: 7bit Precedence: bulk X-MimeOLE: Produced By Microsoft Exchange V6.0.6249.0 content-class: urn:content-classes:message Thread-Topic: CMMS software Thread-Index: AcPWCO/cBx91YtFbQTC7tV6/adObxQ== X-NAIMIME-Disclaimer: 1 X-NAIMIME-Modified: 1 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 08 Jan 2004 11:00:36 -0600 From: Tyson Long Subject: CMMS software Sender: owner-linac-eng@plato.aristotle.net To: "List Server (E-mail 2)" X-MimeOLE: Produced By Microsoft Exchange V6.0.6249.0 content-class: urn:content-classes:message Thread-Topic: CMMS software Thread-Index: AcPWCO/cBx91YtFbQTC7tV6/adObxQ== X-NAIMIME-Disclaimer: 1 X-NAIMIME-Modified: 1 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f I would like to know what people are using for work order software and PMs. I am looking at purchasing something for our oncology department. Tyson Long Biomedical Equipment Specialist Mercy Medical Center Cedar Rapids, IA 52402 319-369-4532 Confidentiality Notice: This message and any attachments may contain confidential and privileged information that is protected by law. The information contained herein is transmitted for the sole use of the intended recipient(s). If you are not the intended recipient or designated agent of the recipient of such information, you are hereby notified that any use, dissemination, copying or retention of this email or the information contained herein is strictly prohibited and may subject you to penalties under federal and/or state law. If you received this email in error, please notify the sender immediately and permanently delete this email.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HR600BRUPZ3II@hubbard.azu.nl>; Thu, 8 Jan 2004 19:57:10 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004010819570227598 ; Thu, 08 Jan 2004 19:57:02 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA04637; Thu, 08 Jan 2004 19:58:15 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma004614; Thu, 08 Jan 2004 19:57:57 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id KAA24984 for linac-eng-list; Thu, 08 Jan 2004 10:55:18 -0600 (CST) Received: from PHSEXCHICI.MGH.HARVARD.EDU (phsexchici.mgh.harvard.edu [132.183.126.51]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id KAA24977 for ; Thu, 08 Jan 2004 10:55:16 -0600 (CST) Received: by phsexchici.mgh.harvard.edu with Internet Mail Service (5.5.2657.72) id ; Thu, 08 Jan 2004 11:54:45 -0500 Date: Thu, 08 Jan 2004 11:54:37 -0500 From: "Maddox, Buford J" Subject: RE: Intermittant no beam 2100cd Sender: owner-linac-eng@plato.aristotle.net To: 'Peter Vitali' , SMcna39074@aol.com Cc: linac-eng@plato.aristotle.net Message-id: <36298D09ED1AD311B4DC0008C7F4D4E11146630F@phsexch6.partners.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 08 Jan 2004 11:54:37 -0500 From: "Maddox, Buford J" Subject: RE: Intermittant no beam 2100cd Sender: owner-linac-eng@plato.aristotle.net To: 'Peter Vitali' , SMcna39074@aol.com Cc: linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f One other cause might be microphonic relays on the PCB near K2. Tap on them to test. Jerry -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Peter Vitali Sent: Thursday, January 08, 2004 10:10 AM To: SMcna39074@aol.com Cc: linac-eng@plato.aristotle.net Subject: Re: Intermittant no beam 2100cd Stan: Check to wiring to K2. We had the same problem and found it to be corrosion on the pins on the connectors that the 24VDC that holds K2 up comes thru. The corrosion was on all the pins on every panel connector in the stand and modulator. If the beam drops out within two seconds of Beam On then it is the aux switch on K2 not making or K2 not holding. We skinned the wires to the K2 coil and put a meter on it. Using our closes circuit in room camera we were able to watch the voltage fluctuate. It would stay around 20-22 volts and then instantaneously drop below 19Volts and then come back up to around 22 volts. The normal voltage on the coil should be above 23.5 Vdc and steady. Another way to check if this is happening, take a 24Vdc supply, and attach it directly to the coil of the K2 relay. If you can treat all day then your problem is the 24Vdc supplied from the machine's console. If you do not have a 24Vdc supply handy, you and get it from the emergency off batteriers in the emergency pendant control box. Peter E. Vitali, CBET Therapeutic Radiological Engineer Yale New Haven Hospital 20 York Street, HRT 22 New Haven, CT. 06504 Phone: (203) 688-2948 FAX: (203) 688-3663 E-mail: peter.vitali@yale.edu As usual, everything I say may be plausibly denied at my employer's convenience... SMcna39074@aol.com wrote: > I have an intermittant on our 2100c/d s/n 1023. For unknown reasons the beam will just stop, any energy. Does not write to event log, gives no fault indication, gives no ready indication. Only need to hit beam on switch to restart where beam was interrupted. Was annoying, but now that we are starting IMRT, don't want the interruptions. Have replaced both Timer and Timer Interface PCBs. Key switch and blocks both changed. Happened on software version 5.4 and now on 6.2. Using original console computer. Changing K2 in modulator panel tomorrow. Any ideas? stan@ccsb.org > Stan McNally Cancer Center of Santa Barbara, Ca  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HR600CM6QXNA0@hubbard.azu.nl>; Thu, 8 Jan 2004 20:17:48 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004010820174613676 ; Thu, 08 Jan 2004 20:17:46 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id UAA06368; Thu, 08 Jan 2004 20:18:59 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma006325; Thu, 08 Jan 2004 20:18:36 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id LAA25995 for linac-eng-list; Thu, 08 Jan 2004 11:38:26 -0600 (CST) Received: from health.roswellpark.org (health.roswellpark.org [67.99.175.235]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id LAA25991 for ; Thu, 08 Jan 2004 11:38:24 -0600 (CST) Received: from VERITY.roswellpark.org ([10.1.204.170]) by health.roswellpark.org with Microsoft SMTPSVC(5.0.2195.6713); Thu, 08 Jan 2004 12:37:53 -0500 Date: Thu, 08 Jan 2004 12:37:53 -0500 From: "Towns, Patrick" Subject: Compressed Table Top Sender: owner-linac-eng@plato.aristotle.net To: "Linac-Eng (E-mail)" Message-id: <6FF91AE4F1DC7743A6466E334EB865AE018EF51E@VERITY.roswellpark.org> MIME-version: 1.0 Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 8bit Precedence: bulk X-MimeOLE: Produced By Microsoft Exchange V6.0.6487.1 content-class: urn:content-classes:message Thread-Topic: Compressed Table Top Thread-Index: AcPWDiSzWnVz6cYoT9Got2H2PBN5Iw== X-OriginalArrivalTime: 08 Jan 2004 17:37:53.0420 (UTC) FILETIME=[24F184C0:01C3D60E] X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id LAA25992 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 08 Jan 2004 12:37:53 -0500 From: "Towns, Patrick" Subject: Compressed Table Top Sender: owner-linac-eng@plato.aristotle.net To: "Linac-Eng (E-mail)" X-MimeOLE: Produced By Microsoft Exchange V6.0.6487.1 content-class: urn:content-classes:message Thread-Topic: Compressed Table Top Thread-Index: AcPWDiSzWnVz6cYoT9Got2H2PBN5Iw== X-OriginalArrivalTime: 08 Jan 2004 17:37:53.0420 (UTC) FILETIME=[24F184C0:01C3D60E] X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id LAA25992 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Any recommendations on extra support a for a Varian Exact Couch. We have a patient that weighs 350lbs. He compressed the tabletop onto the table frame. Any suggestions would be appreciated. Patrick Towns Roswell Park Cancer Institute Buffalo, New York  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HR600F1ZUXMWL@hubbard.azu.nl>; Thu, 8 Jan 2004 21:44:11 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004010821440920366 ; Thu, 08 Jan 2004 21:44:09 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id VAA14588; Thu, 08 Jan 2004 21:45:22 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma014556; Thu, 08 Jan 2004 21:44:56 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id MAA27930 for linac-eng-list; Thu, 08 Jan 2004 12:51:34 -0600 (CST) Received: from gwmail.harthosp.org (gwmail.harthosp.org [199.231.29.249]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id MAA27926 for ; Thu, 08 Jan 2004 12:51:33 -0600 (CST) Received: from HHCC-MTA by gwmail.harthosp.org with Novell_GroupWise; Thu, 08 Jan 2004 13:50:52 -0500 Date: Thu, 08 Jan 2004 13:50:41 -0500 From: Robert Lindeyer Subject: Re: Intermittant no beam 2100cd Sender: owner-linac-eng@plato.aristotle.net To: SMcna39074@aol.com, linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.0.2 Content-type: text/plain; charset=US-ASCII Content-disposition: inline Content-transfer-encoding: 7bit Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 08 Jan 2004 13:50:41 -0500 From: Robert Lindeyer Subject: Re: Intermittant no beam 2100cd Sender: owner-linac-eng@plato.aristotle.net To: SMcna39074@aol.com, linac-eng@plato.aristotle.net Content-disposition: inline X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Check your AC door switch. >>> 01/07/04 11:29PM >>> I have an intermittant on our 2100c/d s/n 1023. For unknown reasons the beam will just stop, any energy. Does not write to event log, gives no fault indication, gives no ready indication. Only need to hit beam on switch to restart where beam was interrupted. Was annoying, but now that we are starting IMRT, don't want the interruptions. Have replaced both Timer and Timer Interface PCBs. Key switch and blocks both changed. Happened on software version 5.4 and now on 6.2. Using original console computer. Changing K2 in modulator panel tomorrow. Any ideas? stan@ccsb.org Stan McNally Cancer Center of Santa Barbara, Ca  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HR600FO0V50J9@hubbard.azu.nl>; Thu, 8 Jan 2004 21:48:37 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004010821483523638 ; Thu, 08 Jan 2004 21:48:35 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id VAA14959; Thu, 08 Jan 2004 21:49:48 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma014926; Thu, 08 Jan 2004 21:49:19 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id NAA28139 for linac-eng-list; Thu, 08 Jan 2004 13:02:21 -0600 (CST) Received: from dalwhinnie.chhlth.govt.nz ([203.163.70.2]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id NAA28135 for ; Thu, 08 Jan 2004 13:02:17 -0600 (CST) Received: from mailsweeper2.chhlth.govt.nz (mailsweeper2.chhlth.govt.nz [159.117.18.162]) by dalwhinnie.chhlth.govt.nz (8.12.8/8.12.5) with ESMTP id i08J3lfU019789 for ; Fri, 09 Jan 2004 08:03:48 +1300 Received: from SMTPGATE.CHHLTH.GOVT.NZ (unverified) by mailsweeper2.chhlth.govt.nz (Content Technologies SMTPRS 4.3.1) with ESMTP id for ; Fri, 09 Jan 2004 08:00:18 +1300 Received: from CHCH2-MTA by SMTPGATE.CHHLTH.GOVT.NZ with Novell_GroupWise; Fri, 09 Jan 2004 08:01:44 +1300 Date: Fri, 09 Jan 2004 08:01:28 +1300 From: Dave Pinchin Subject: Re: Intermittant no beam 2100cd Sender: owner-linac-eng@plato.aristotle.net To: SMcna39074@aol.com, linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.0.4 Content-type: text/plain; charset=us-ascii Content-disposition: inline Content-transfer-encoding: 8bit Precedence: bulk X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id NAA28136 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 09 Jan 2004 08:01:28 +1300 From: Dave Pinchin Subject: Re: Intermittant no beam 2100cd Sender: owner-linac-eng@plato.aristotle.net To: SMcna39074@aol.com, linac-eng@plato.aristotle.net Content-disposition: inline X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id NAA28136 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f G'day, This one used to be called a BONAR. Beam Off No Apparent Reason. If there is an interlock it WILL write a log. If there is a contactor /electronics failure it WILL cause a UDR and write a log. The BONAR scenario therefore MUST be coming from the normal beam off control. mu1 OR MORE LIKELY the beam off button. Check that one out. There was an early fault involving electrical noise on the beamoff line but that was fixed long before CDs. Try swapping the dkb to another machine.... Good hunting Dave. >>> 8/01/04 17:29:52 >>> I have an intermittant on our 2100c/d s/n 1023. For unknown reasons the beam will just stop, any energy. Does not write to event log, gives no fault indication, gives no ready indication. Only need to hit beam on switch to restart where beam was interrupted. Was annoying, but now that we are starting IMRT, don't want the interruptions. Have replaced both Timer and Timer Interface PCBs. Key switch and blocks both changed. Happened on software version 5.4 and now on 6.2. Using original console computer. Changing K2 in modulator panel tomorrow. Any ideas? stan@ccsb.org Stan McNally Cancer Center of Santa Barbara, Ca ********************************************************************** ** This email and attachments have been scanned for content and viruses and is believed to be clean ** This email or attachments may contain confidential or legally privileged information intended for the sole use of the addressee(s). Any use, redistribution, disclosure, or reproduction of this message, except as intended, is prohibited. If you received this email in error, please notify the sender and remove all copies of the message, including any attachments. Any views or opinions expressed in this email (unless otherwise stated) may not represent those of Canterbury District Health Board **********************************************************************  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HR600FHMW09WL@hubbard.azu.nl>; Thu, 8 Jan 2004 22:07:23 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004010822072012022 ; Thu, 08 Jan 2004 22:07:20 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id WAA16740; Thu, 08 Jan 2004 22:08:33 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma016724; Thu, 08 Jan 2004 22:08:18 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id NAA28421 for linac-eng-list; Thu, 08 Jan 2004 13:11:52 -0600 (CST) Received: from dalwhinnie.chhlth.govt.nz ([203.163.70.2]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id NAA28417 for ; Thu, 08 Jan 2004 13:11:50 -0600 (CST) Received: from mailsweeper2.chhlth.govt.nz (mailsweeper2.chhlth.govt.nz [159.117.18.162]) by dalwhinnie.chhlth.govt.nz (8.12.8/8.12.5) with ESMTP id i08JDLfU020662 for ; Fri, 09 Jan 2004 08:13:21 +1300 Received: from SMTPGATE.CHHLTH.GOVT.NZ (unverified) by mailsweeper2.chhlth.govt.nz (Content Technologies SMTPRS 4.3.1) with ESMTP id for ; Fri, 09 Jan 2004 08:09:51 +1300 Received: from CHCH2-MTA by SMTPGATE.CHHLTH.GOVT.NZ with Novell_GroupWise; Fri, 09 Jan 2004 08:11:17 +1300 Date: Fri, 09 Jan 2004 08:11:08 +1300 From: Dave Pinchin Subject: Re: Intermittant no beam 2100cd Sender: owner-linac-eng@plato.aristotle.net To: SMcna39074@aol.com, stan@ccsb.org, linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.0.4 Content-type: text/plain; charset=us-ascii Content-disposition: inline Content-transfer-encoding: 8bit Precedence: bulk X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id NAA28418 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 09 Jan 2004 08:11:08 +1300 From: Dave Pinchin Subject: Re: Intermittant no beam 2100cd Sender: owner-linac-eng@plato.aristotle.net To: SMcna39074@aol.com, stan@ccsb.org, linac-eng@plato.aristotle.net Content-disposition: inline X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id NAA28418 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f G'day, A simple test to verify the BONAR as not being generated by other things. When the beam fails, does it a) drop the machine to 'READY' b) Stop making noise / beam. It is very tempting when the machine stops making beam to press the 'beam-off' button. This can hide a fault. If the machine stops making beam BUT is still trying to make beam DO NOT press the beam off. Wait until the UDR interlock stops it. This will force a log to be written. Good hunting Dave. >>> 8/01/04 17:29:52 >>> I have an intermittant on our 2100c/d s/n 1023. For unknown reasons the beam will just stop, any energy. Does not write to event log, gives no fault indication, gives no ready indication. Only need to hit beam on switch to restart where beam was interrupted. Was annoying, but now that we are starting IMRT, don't want the interruptions. Have replaced both Timer and Timer Interface PCBs. Key switch and blocks both changed. Happened on software version 5.4 and now on 6.2. Using original console computer. Changing K2 in modulator panel tomorrow. Any ideas? stan@ccsb.org Stan McNally Cancer Center of Santa Barbara, Ca ********************************************************************** ** This email and attachments have been scanned for content and viruses and is believed to be clean ** This email or attachments may contain confidential or legally privileged information intended for the sole use of the addressee(s). Any use, redistribution, disclosure, or reproduction of this message, except as intended, is prohibited. If you received this email in error, please notify the sender and remove all copies of the message, including any attachments. Any views or opinions expressed in this email (unless otherwise stated) may not represent those of Canterbury District Health Board **********************************************************************  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HR600GBSWJJF5@hubbard.azu.nl>; Thu, 8 Jan 2004 22:18:57 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004010822185106645 ; Thu, 08 Jan 2004 22:18:51 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id WAA17765; Thu, 08 Jan 2004 22:20:03 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma017711; Thu, 08 Jan 2004 22:19:30 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id NAA28635 for linac-eng-list; Thu, 08 Jan 2004 13:21:26 -0600 (CST) Received: from titan.lhsc.on.ca (titan.lhsc.on.ca [142.158.2.20]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id NAA28630 for ; Thu, 08 Jan 2004 13:21:20 -0600 (CST) Received: from mail.lrcc.on.ca (mail.lrcc.on.ca [142.158.120.242]) by titan.lhsc.on.ca (8.11.7p1+Sun/8.11.7) with SMTP id i08JKor17364 for ; Thu, 08 Jan 2004 14:20:50 -0500 (EST) Received: by mail.lrcc.on.ca(Lotus SMTP MTA v4.6.7 (934.1 12-30-1999)) id 85256E15.0069534E ; Thu, 08 Jan 2004 14:10:26 -0500 Date: Thu, 08 Jan 2004 14:10:21 -0500 From: Randy.McVittie@lrcc.on.ca Subject: RE: Intermittant no beam 2100cd Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <85256E15.00695191.00@mail.lrcc.on.ca> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Content-disposition: inline Precedence: bulk X-Lotus-FromDomain: LRCC X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 08 Jan 2004 14:10:21 -0500 From: Randy.McVittie@lrcc.on.ca Subject: RE: Intermittant no beam 2100cd Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Content-disposition: inline X-Lotus-FromDomain: LRCC X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Another thing to look at is the Dedicated Keyboard. (DKB) The Beam Off button has two circuits, one goes into a latch and then the micro in the DKB transmits a ASCII code to the Control Processor etc etc The second ciruit goes straight intothe Timer Interface board (I think). Several years ago there was a problem in this circuit and the fix was a decoupling cap in the circuit in the DKB between the switch and the latch Good Luck Randy McVittie "Maddox, Buford J" on 2004-01-08 11:54:37 To: "'Peter Vitali'" , SMcna39074@aol.com cc: linac-eng@plato.aristotle.net (bcc: Randy McVittie/Lrcc) Subject: RE: Intermittant no beam 2100cd One other cause might be microphonic relays on the PCB near K2. Tap on them to test. Jerry -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Peter Vitali Sent: Thursday, January 08, 2004 10:10 AM To: SMcna39074@aol.com Cc: linac-eng@plato.aristotle.net Subject: Re: Intermittant no beam 2100cd Stan: Check to wiring to K2. We had the same problem and found it to be corrosion on the pins on the connectors that the 24VDC that holds K2 up comes thru. The corrosion was on all the pins on every panel connector in the stand and modulator. If the beam drops out within two seconds of Beam On then it is the aux switch on K2 not making or K2 not holding. We skinned the wires to the K2 coil and put a meter on it. Using our closes circuit in room camera we were able to watch the voltage fluctuate. It would stay around 20-22 volts and then instantaneously drop below 19Volts and then come back up to around 22 volts. The normal voltage on the coil should be above 23.5 Vdc and steady. Another way to check if this is happening, take a 24Vdc supply, and attach it directly to the coil of the K2 relay. If you can treat all day then your problem is the 24Vdc supplied from the machine's console. If you do not have a 24Vdc supply handy, you and get it from the emergency off batteriers in the emergency pendant control box. Peter E. Vitali, CBET Therapeutic Radiological Engineer Yale New Haven Hospital 20 York Street, HRT 22 New Haven, CT. 06504 Phone: (203) 688-2948 FAX: (203) 688-3663 E-mail: peter.vitali@yale.edu As usual, everything I say may be plausibly denied at my employer's convenience... SMcna39074@aol.com wrote: > I have an intermittant on our 2100c/d s/n 1023. For unknown reasons the beam will just stop, any energy. Does not write to event log, gives no fault indication, gives no ready indication. Only need to hit beam on switch to restart where beam was interrupted. Was annoying, but now that we are starting IMRT, don't want the interruptions. Have replaced both Timer and Timer Interface PCBs. Key switch and blocks both changed. Happened on software version 5.4 and now on 6.2. Using original console computer. Changing K2 in modulator panel tomorrow. Any ideas? stan@ccsb.org > Stan McNally Cancer Center of Santa Barbara, Ca  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HR600H9CXO1PD@hubbard.azu.nl>; Thu, 8 Jan 2004 22:43:15 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004010822431209258 ; Thu, 08 Jan 2004 22:43:12 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id WAA19998; Thu, 08 Jan 2004 22:44:25 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma019955; Thu, 08 Jan 2004 22:44:09 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id NAA29612 for linac-eng-list; Thu, 08 Jan 2004 13:53:53 -0600 (CST) Received: from titan.lhsc.on.ca (titan.lhsc.on.ca [142.158.2.20]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id NAA29608 for ; Thu, 08 Jan 2004 13:53:51 -0600 (CST) Received: from mail.lrcc.on.ca (mail.lrcc.on.ca [142.158.120.242]) by titan.lhsc.on.ca (8.11.7p1+Sun/8.11.7) with SMTP id i08JrLr27580 for ; Thu, 08 Jan 2004 14:53:21 -0500 (EST) Received: by mail.lrcc.on.ca(Lotus SMTP MTA v4.6.7 (934.1 12-30-1999)) id 85256E15.006C4D86 ; Thu, 08 Jan 2004 14:42:57 -0500 Date: Thu, 08 Jan 2004 14:42:53 -0500 From: Randy.McVittie@lrcc.on.ca Subject: CMMS Software - my wish list Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <85256E15.006C4BEC.00@mail.lrcc.on.ca> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Content-disposition: inline Precedence: bulk X-Lotus-FromDomain: LRCC X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 08 Jan 2004 14:42:53 -0500 From: Randy.McVittie@lrcc.on.ca Subject: CMMS Software - my wish list Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Content-disposition: inline X-Lotus-FromDomain: LRCC X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Maintenance Software wish list: (in no particular order) Easy to enter data, consistent input of information maybe like a wizard accessible to everyone everywhere - web based I think is the way to go data can be exported to Access, dBase, Paradox, MSSQL, not sure of all of the options able to browse records without being able to edit them handle parts inventory handle machine PMI schedule easy to install handle purchase orders requisition handle project time tracking/billing able to search on keyword able to search by repair a white board common area to show outstanding work orders The parts ordering and inventory is an area that I have thought a lot about. It would be excellent if you could have multiple vendors for various parts but it would also be good if you could pull up the ordering history of a part eg example of a sample report that would be good to be able to pull up when you are calling your vendors for prices of parts Date OrderNo Vendor Part Descr Price 2001-01-01 123 Varian 1234565 DQ thyratron 1200.00 2002-02-03 234 Richardson Electronics 8605B DQ thyratron 700.00 2002-06-09 777 Richardson Electronics 8605B DQ thyratron 800.00 2003-01-01 999 Mevex 8605B DQ thyratron 1150.00 If you could pull up a table like this when you go to inventory then you can see who you have bought what from in the past and maybe try the different vendors.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HR600IJ9YV4JC@hubbard.azu.nl>; Thu, 8 Jan 2004 23:09:05 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004010823090307472 ; Thu, 08 Jan 2004 23:09:03 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id XAA23073; Thu, 08 Jan 2004 23:10:16 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma022945; Thu, 08 Jan 2004 23:09:34 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id OAA29965 for linac-eng-list; Thu, 08 Jan 2004 14:04:37 -0600 (CST) Received: from mailserv.nomos.com (mailserv.nomos.com [198.133.110.71]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id OAA29960 for ; Thu, 08 Jan 2004 14:04:32 -0600 (CST) Received: from hq1 ([198.133.110.72]:4101 helo=thor.nomos.com) by mailserv.nomos.com with esmtp (Exim 4.22 #2 (Redhat)) id 1AegO3-0008BY-4A for ; Thu, 08 Jan 2004 15:04:11 -0500 Received: by hq1.nomos.com with Internet Mail Service (5.5.2653.19) id ; Thu, 08 Jan 2004 15:04:00 -0500 Date: Thu, 08 Jan 2004 15:04:00 -0500 From: Teri Bonds Subject: remove from list Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <265C171B97EE1C47B2DD855915993CE3D579EE@hq1.nomos.com> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_QZ3zT6LwOp8bUZkMwjNWIQ)" Precedence: bulk X-SA-Exim-Mail-From: tbonds@nomos.com X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 08 Jan 2004 15:04:00 -0500 From: Teri Bonds Subject: remove from list Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-SA-Exim-Mail-From: tbonds@nomos.com X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_QZ3zT6LwOp8bUZkMwjNWIQ) Content-type: text/plain; CHARSET=US-ASCII Teri . --Boundary_(ID_QZ3zT6LwOp8bUZkMwjNWIQ) Content-type: text/html Message
 
 
Teri .


 
 
--Boundary_(ID_QZ3zT6LwOp8bUZkMwjNWIQ)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HR8001LXDBF47@hubbard.azu.nl>; Fri, 9 Jan 2004 17:18:52 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004010917185108596 ; Fri, 09 Jan 2004 17:18:51 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id RAA15935; Fri, 09 Jan 2004 17:20:03 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma015872; Fri, 09 Jan 2004 17:19:30 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id IAA16260 for linac-eng-list; Fri, 09 Jan 2004 08:18:23 -0600 (CST) Received: from PHSXCHICI3.partners.org (phsxchici3.mgh.harvard.edu [132.183.118.13]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id IAA16256 for ; Fri, 09 Jan 2004 08:18:21 -0600 (CST) Received: by phsxchici3.mgh.harvard.edu with Internet Mail Service (5.5.2657.72) id ; Fri, 09 Jan 2004 09:17:59 -0500 Date: Fri, 09 Jan 2004 09:17:49 -0500 From: "Maddox, Buford J" Subject: RE: Intermittant no beam 2100cd Sender: owner-linac-eng@plato.aristotle.net To: 'Dave Pinchin' , SMcna39074@aol.com, stan@ccsb.org, linac-eng@plato.aristotle.net Message-id: <36298D09ED1AD311B4DC0008C7F4D4E111466312@phsexch6.partners.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 09 Jan 2004 09:17:49 -0500 From: "Maddox, Buford J" Subject: RE: Intermittant no beam 2100cd Sender: owner-linac-eng@plato.aristotle.net To: 'Dave Pinchin' , SMcna39074@aol.com, stan@ccsb.org, linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f I like the idea of forcing the machine to write a log by waiting for UDRS, good idea. If you do a beam on with an accessory fault, the event log has codes at the end. Some are useful. Jerry -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Dave Pinchin Sent: Thursday, January 08, 2004 2:11 PM To: SMcna39074@aol.com; stan@ccsb.org; linac-eng@plato.aristotle.net Subject: Re: Intermittant no beam 2100cd G'day, A simple test to verify the BONAR as not being generated by other things. When the beam fails, does it a) drop the machine to 'READY' b) Stop making noise / beam. It is very tempting when the machine stops making beam to press the 'beam-off' button. This can hide a fault. If the machine stops making beam BUT is still trying to make beam DO NOT press the beam off. Wait until the UDR interlock stops it. This will force a log to be written. Good hunting Dave. >>> 8/01/04 17:29:52 >>> I have an intermittant on our 2100c/d s/n 1023. For unknown reasons the beam will just stop, any energy. Does not write to event log, gives no fault indication, gives no ready indication. Only need to hit beam on switch to restart where beam was interrupted. Was annoying, but now that we are starting IMRT, don't want the interruptions. Have replaced both Timer and Timer Interface PCBs. Key switch and blocks both changed. Happened on software version 5.4 and now on 6.2. Using original console computer. Changing K2 in modulator panel tomorrow. Any ideas? stan@ccsb.org Stan McNally Cancer Center of Santa Barbara, Ca ********************************************************************** ** This email and attachments have been scanned for content and viruses and is believed to be clean ** This email or attachments may contain confidential or legally privileged information intended for the sole use of the addressee(s). Any use, redistribution, disclosure, or reproduction of this message, except as intended, is prohibited. 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Any views or opinions expressed in this email (unless otherwise stated) may not represent those of Canterbury District Health Board **********************************************************************  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HRD008APM7AGI@hubbard.azu.nl>; Mon, 12 Jan 2004 13:18:56 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004011213184428986 ; Mon, 12 Jan 2004 13:18:44 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id NAA10328; Mon, 12 Jan 2004 13:19:59 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma010157; Mon, 12 Jan 2004 13:19:17 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id EAA29063 for linac-eng-list; Mon, 12 Jan 2004 04:19:11 -0600 (CST) Received: from cato.nettas.net (cato.nettas.net [202.7.15.72]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id EAA29059 for ; Mon, 12 Jan 2004 04:19:08 -0600 (CST) Received: from dchs6202.dchs.tas.gov.au (exch.dchs.tas.gov.au [147.109.65.6]) by cato.nettas.net (8.12.7-20030918/8.12.7) with ESMTP id i0CAKP2w027863 for ; Mon, 12 Jan 2004 21:20:25 +1100 (EST) Received: by exch.dchs.tas.gov.au with Internet Mail Service (5.5.2655.55) id ; Mon, 12 Jan 2004 21:19:02 +1100 Date: Mon, 12 Jan 2004 21:19:01 +1100 From: Johnson Glenn Subject: GFIL I/L Sender: owner-linac-eng@plato.aristotle.net To: "LINAC_ENGINEERS (E-mail)" Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2655.55) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 12 Jan 2004 21:19:01 +1100 From: Johnson Glenn Subject: GFIL I/L Sender: owner-linac-eng@plato.aristotle.net To: "LINAC_ENGINEERS (E-mail)" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hi Everyone, Have a 23EX sn 335 (18 months old) with digital gun deck. We've been getting intermittent GFIL I/L. Dropping out at approx. 40 MU on 150MU / 600 Dose Rate / Fixed 6X setup. RT's enter to continue and you may get 3 MU and the GFIL I/L again. It can go on like this for ten times before it comes good. In service mode created similar setup (but set 500 MU) and it dropped out at 420 MU with GFIL I/L. Inspected the Gun Controller and it read "Run 2 = OK". I thought I'd see an error ? I override GFIL and at 200 MU I get UDRS I/L, after the dose rate dropped off...........?? I have noticed that the dose rate is "slow" to come up at times, even though the unservoed rate is approx. 15 % above. I've carried out the basic checks on Gun Deck - checked fil, cathode, grid bias and pulse and reseated PCB's and cable connections. Any ideas or input would be greatly appreciated. My head hurts. Thanks in advance. Regards, Glenn Johnson Radiation Engineer W P Holman Clinic  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HRD00HPERECM2@hubbard.azu.nl>; Mon, 12 Jan 2004 15:11:04 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004011215105901377 ; Mon, 12 Jan 2004 15:10:59 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id PAA06596; Mon, 12 Jan 2004 15:12:13 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma006471; Mon, 12 Jan 2004 15:11:43 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id GAA00337 for linac-eng-list; Mon, 12 Jan 2004 06:21:03 -0600 (CST) Received: from imsm032.netvigator.com (n219076116129.netvigator.com [219.76.116.129]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id GAA00333 for ; Mon, 12 Jan 2004 06:21:01 -0600 (CST) Received: (qmail 25240 invoked from network); Mon, 12 Jan 2004 12:20:44 +0000 Received: from n219077017166.netvigator.com (HELO kimyeung) (219.77.17.166) by imsm032.netvigator.com with SMTP; Mon, 12 Jan 2004 12:20:44 +0000 Date: Mon, 12 Jan 2004 20:10:04 +0800 From: Kim Yeung Subject: Re: Sourcing for Varian air cylinder Sender: owner-linac-eng@plato.aristotle.net To: Linac Message-id: <00a801c3d905$034010e0$0202a8c0@kimyeung> MIME-version: 1.0 X-Mailer: Microsoft Outlook Express 6.00.2800.1158 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_CP9p/DrqXBnTjOmzFH3+2g)" Precedence: bulk X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 *** EOOH *** Date: Mon, 12 Jan 2004 20:10:04 +0800 From: Kim Yeung Subject: Re: Sourcing for Varian air cylinder Sender: owner-linac-eng@plato.aristotle.net To: Linac X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 This is a multi-part message in MIME format. --Boundary_(ID_CP9p/DrqXBnTjOmzFH3+2g) Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: quoted-printable Hi Colleagues, Varian 2300CD Clinac Could anyone advise the manufacturer and model number of the Carrousel = air cylinder (Varian part number B83883603)? Thanks in advance. Kim Yeung --Boundary_(ID_CP9p/DrqXBnTjOmzFH3+2g) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: quoted-printable
Hi Colleagues,
        Varian=20 2300CD Clinac
 
Could anyone advise the manufacturer = and model=20 number of the Carrousel air cylinder (Varian part number=20 B83883603)?
 
Thanks in advance.
 
Kim Yeung
--Boundary_(ID_CP9p/DrqXBnTjOmzFH3+2g)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HRE005IS1DEFS@hubbard.azu.nl>; Mon, 12 Jan 2004 18:46:27 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004011218462115512 ; Mon, 12 Jan 2004 18:46:21 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA15022; Mon, 12 Jan 2004 18:47:35 +0100 (MET) Received: from zwaard.nl.uu.net(193.79.237.170) by armstrong.azu.nl via smap (V1.3) id xman14927; Mon, 12 Jan 2004 18:47:18 +0100 Received: from plato.aristotle.net ([206.66.224.2]:55058 "EHLO plato.aristotle.net") by zwaard.nl.uu.net with ESMTP id S906837AbUALRJH; Mon, 12 Jan 2004 17:09:07 +0000 Received: by plato.aristotle.net (8.9.0/8.9.0) id JAA02810 for linac-eng-list; Mon, 12 Jan 2004 09:10:40 -0600 (CST) Received: from titan.lhsc.on.ca (titan.lhsc.on.ca [142.158.2.20]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id JAA02806 for ; Mon, 12 Jan 2004 09:10:38 -0600 (CST) Received: from mail.lrcc.on.ca (mail.lrcc.on.ca [142.158.120.242]) by titan.lhsc.on.ca (8.11.7p1+Sun/8.11.7) with SMTP id i0CF9sr28278; Mon, 12 Jan 2004 10:09:55 -0500 (EST) Received: by mail.lrcc.on.ca(Lotus SMTP MTA v4.6.7 (934.1 12-30-1999)) id 85256E19.00534C98 ; Mon, 12 Jan 2004 10:09:50 -0500 Date: Mon, 12 Jan 2004 10:09:49 -0500 From: Randy.McVittie@lrcc.on.ca Subject: Re: GFIL I/L Sender: owner-linac-eng@plato.aristotle.net To: Johnson Glenn Cc: "LINAC_ENGINEERS (E-mail)" Message-id: <85256E19.00534C58.00@mail.lrcc.on.ca> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Content-disposition: inline Precedence: bulk X-Lotus-FromDomain: LRCC X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 12 Jan 2004 10:09:49 -0500 From: Randy.McVittie@lrcc.on.ca Subject: Re: GFIL I/L Sender: owner-linac-eng@plato.aristotle.net To: Johnson Glenn Cc: "LINAC_ENGINEERS (E-mail)" Content-disposition: inline X-Lotus-FromDomain: LRCC X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Have you hooked up a computer to look at the serial information coming off of the Gun Deck? You might get a clue there. Have you looked at your GUN I pulse with a scope? We had a machine that had developed a grid short inside the gun. This problem was most prevalent first thing in the morning. We learned to live with it for about a year or so before it got bad enough we had to change the gun. But the GUN I pulse was definitely bad at the time of the GFIL interlock, and there was an elevated value for GUN VAC at the time of the fault. The only problems we have had our machines in the Gun Deck is the A/D chip on the Hot Deck Filament Board schematic: 882231 Component: U2 - TLC1541I This board is easy to change out, the chip is in a socket, just be careful it is on the HOT DECK SIDE so take HIGH VOLTAGE PRECAUTIONS. Randy McVittie London Regional Cancer Centre Johnson Glenn on 2004-01-12 05:19:01 To: "LINAC_ENGINEERS (E-mail)" cc: (bcc: Randy McVittie/Lrcc) Subject: GFIL I/L Hi Everyone, Have a 23EX sn 335 (18 months old) with digital gun deck. We've been getting intermittent GFIL I/L. Dropping out at approx. 40 MU on 150MU / 600 Dose Rate / Fixed 6X setup. RT's enter to continue and you may get 3 MU and the GFIL I/L again. It can go on like this for ten times before it comes good. In service mode created similar setup (but set 500 MU) and it dropped out at 420 MU with GFIL I/L. Inspected the Gun Controller and it read "Run 2 = OK". I thought I'd see an error ? I override GFIL and at 200 MU I get UDRS I/L, after the dose rate dropped off...........?? I have noticed that the dose rate is "slow" to come up at times, even though the unservoed rate is approx. 15 % above. I've carried out the basic checks on Gun Deck - checked fil, cathode, grid bias and pulse and reseated PCB's and cable connections. Any ideas or input would be greatly appreciated. My head hurts. Thanks in advance. Regards, Glenn Johnson Radiation Engineer W P Holman Clinic  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HRF0017SSEI5D@hubbard.azu.nl>; Tue, 13 Jan 2004 17:27:56 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004011317275228329 ; Tue, 13 Jan 2004 17:27:52 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id RAA26548; Tue, 13 Jan 2004 17:29:08 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma026444; Tue, 13 Jan 2004 17:28:48 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id IAA25854 for linac-eng-list; Tue, 13 Jan 2004 08:29:28 -0600 (CST) Received: from PHSXCHICI4.partners.org (phsxchici4.mgh.harvard.edu [132.183.118.57]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id IAA25850 for ; Tue, 13 Jan 2004 08:29:26 -0600 (CST) Received: by phsxchici4.mgh.harvard.edu with Internet Mail Service (5.5.2657.72) id ; Tue, 13 Jan 2004 09:29:05 -0500 Date: Tue, 13 Jan 2004 09:28:53 -0500 From: "Maddox, Buford J" Subject: RE: GFIL I/L Sender: owner-linac-eng@plato.aristotle.net To: 'Johnson Glenn' , "LINAC_ENGINEERS (E-mail)" Message-id: <36298D09ED1AD311B4DC0008C7F4D4E111466319@phsexch6.partners.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 13 Jan 2004 09:28:53 -0500 From: "Maddox, Buford J" Subject: RE: GFIL I/L Sender: owner-linac-eng@plato.aristotle.net To: 'Johnson Glenn' , "LINAC_ENGINEERS (E-mail)" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Since the gun comes up as soon as the mode is programmed, you can go inside and watch it. That is the way we spotted a problem with the little 15v PS on the hot deck, similar vanishing symptoms, rare A/D plus ilk which was not stored. Have also had the A/D chip as mentioned, similar symptoms. Other intermittents have resulted from a cover switch and crowbar switches which needed adjustment. One of the crowbar sw problems was that it stayed in a position to keep the bleeder resistor connected, lowering the HV, and consequently the gun output. the data book tells you how to rig up the gun to test the hot deck, with HV off and deck grounded, so that you could monitor waveforms and voltages. It is still 400v with HV off, so extreme care is needed. Jerry -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Johnson Glenn Sent: Monday, January 12, 2004 5:19 AM To: LINAC_ENGINEERS (E-mail) Subject: GFIL I/L Hi Everyone, Have a 23EX sn 335 (18 months old) with digital gun deck. We've been getting intermittent GFIL I/L. Dropping out at approx. 40 MU on 150MU / 600 Dose Rate / Fixed 6X setup. RT's enter to continue and you may get 3 MU and the GFIL I/L again. It can go on like this for ten times before it comes good. In service mode created similar setup (but set 500 MU) and it dropped out at 420 MU with GFIL I/L. Inspected the Gun Controller and it read "Run 2 = OK". I thought I'd see an error ? I override GFIL and at 200 MU I get UDRS I/L, after the dose rate dropped off...........?? I have noticed that the dose rate is "slow" to come up at times, even though the unservoed rate is approx. 15 % above. I've carried out the basic checks on Gun Deck - checked fil, cathode, grid bias and pulse and reseated PCB's and cable connections. Any ideas or input would be greatly appreciated. My head hurts. Thanks in advance. Regards, Glenn Johnson Radiation Engineer W P Holman Clinic  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HRG00I9ZEQ16K@hubbard.azu.nl>; Wed, 14 Jan 2004 01:30:03 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004011401300121512 ; Wed, 14 Jan 2004 01:30:01 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id BAA13274; Wed, 14 Jan 2004 01:31:16 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma013256; Wed, 14 Jan 2004 01:30:55 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id QAA06067 for linac-eng-list; Tue, 13 Jan 2004 16:42:39 -0600 (CST) Received: from msgia.hs.uab.edu (gw5.uabmc.edu [164.111.37.252]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id QAA06063 for ; Tue, 13 Jan 2004 16:42:37 -0600 (CST) Received: from INET-MTA by msgia.hs.uab.edu with Novell_GroupWise; Tue, 13 Jan 2004 16:41:37 -0600 Date: Tue, 13 Jan 2004 16:41:21 -0600 From: Stephen Jordan Subject: Exact couch Long calibration Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.5.1 Content-type: text/plain; charset=US-ASCII Content-disposition: inline Content-transfer-encoding: 7bit Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 13 Jan 2004 16:41:21 -0600 From: Stephen Jordan Subject: Exact couch Long calibration Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Content-disposition: inline X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Can someone tell me how the MedTec device is used to calibrate / verify the LONG motion of the Exact couch? I can't find it in my TMI or II material; my notes may have been made prior to the Exact couch's release. Thank you in advance! Steve Jordan UAB Rad Physics  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HRG00B6WYDF39@hubbard.azu.nl>; Wed, 14 Jan 2004 08:34:30 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004011408342701019 ; Wed, 14 Jan 2004 08:34:27 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id IAA12965; Wed, 14 Jan 2004 08:35:42 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma012798; Wed, 14 Jan 2004 08:35:13 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id XAA10592 for linac-eng-list; Tue, 13 Jan 2004 23:49:37 -0600 (CST) Received: from imo-m07.mx.aol.com (imo-m07.mx.aol.com [64.12.136.162]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id XAA10588 for ; Tue, 13 Jan 2004 23:49:36 -0600 (CST) Received: from SMcna39074@aol.com by imo-m07.mx.aol.com (mail_out_v36_r4.12.) id y.188.23cf759b (15876) for ; Wed, 14 Jan 2004 00:49:03 -0500 (EST) Received: from aol.com (mow-d25.webmail.aol.com [205.188.139.166]) by air-id07.mx.aol.com (v97.18) with ESMTP id MAILINID73-3e044004d84f34d; Wed, 14 Jan 2004 00:49:03 -0500 Date: Wed, 14 Jan 2004 00:49:03 -0500 From: SMcna39074@aol.com Subject: Re: Intermittant no beam 2100cd Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <597B3B3F.6E04B0F4.0C0A0915@aol.com> MIME-version: 1.0 X-Mailer: Atlas Mailer 2.0 Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 8bit Precedence: bulk X-AOL-IP: 67.125.215.95 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 14 Jan 2004 00:49:03 -0500 From: SMcna39074@aol.com Subject: Re: Intermittant no beam 2100cd Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-AOL-IP: 67.125.215.95 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Thanks to all for help. Our DKB is a 1103245-01A which just happens NOT to have the .1mfd noise decoupling filter cap. The RevB DKB released 6 days later calls for a rework to add the cap. We're installing a -03 with cap and expect that this will fix the intermittent. Looks like we were just unlucky on the production run. Stan Cancer Center of Santa Barbara  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HRH00KPGN2AMK@hubbard.azu.nl>; Wed, 14 Jan 2004 17:27:47 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004011417274603872 ; Wed, 14 Jan 2004 17:27:46 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id RAA02846; Wed, 14 Jan 2004 17:29:01 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma002767; Wed, 14 Jan 2004 17:28:32 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id IAA15738 for linac-eng-list; Wed, 14 Jan 2004 08:27:25 -0600 (CST) Received: from imo-d05.mx.aol.com (imo-d05.mx.aol.com [205.188.157.37]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id IAA15685 for ; Wed, 14 Jan 2004 08:27:23 -0600 (CST) Received: from Rtsolution@aol.com by imo-d05.mx.aol.com (mail_out_v36_r4.12.) id y.55.4edc362f (18707) for ; Wed, 14 Jan 2004 09:26:47 -0500 (EST) Date: Wed, 14 Jan 2004 09:26:47 -0500 (EST) From: Rtsolution@aol.com Subject: Laser guard for Linac Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <55.4edc362f.2d36aba7@aol.com> MIME-version: 1.0 X-Mailer: 8.0 for Windows sub 670 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_aKM+dbAk36DOkbRYxYwe2w)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 14 Jan 2004 09:26:47 -0500 (EST) From: Rtsolution@aol.com Subject: Laser guard for Linac Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f --Boundary_(ID_aKM+dbAk36DOkbRYxYwe2w) Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7bit Has anyone got the laser guard system in operation (on Varian linacs) ? I am very grateful to hear from your commends Thanks in adance RTSolutions --Boundary_(ID_aKM+dbAk36DOkbRYxYwe2w) Content-type: text/html; charset=US-ASCII Content-transfer-encoding: quoted-printable Has anyone got the laser guard syst= em in operation (on Varian linacs) ? I am very grateful to hear from your co= mmends

Thanks in adance

RTSolutions --Boundary_(ID_aKM+dbAk36DOkbRYxYwe2w)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HRH00KRLN3IMK@hubbard.azu.nl>; Wed, 14 Jan 2004 17:28:32 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004011417282931183 ; Wed, 14 Jan 2004 17:28:29 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id RAA02974; Wed, 14 Jan 2004 17:29:44 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma002898; Wed, 14 Jan 2004 17:29:22 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id IAA15475 for linac-eng-list; Wed, 14 Jan 2004 08:17:33 -0600 (CST) Received: from mercy-webappliance.mercycare.org ([66.133.93.250]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id IAA15469 for ; Wed, 14 Jan 2004 08:17:31 -0600 (CST) Received: from mail.mercycare.org(66.133.93.250) by mercy-webappliance.mercycare.org via csmap id 25d1213e_469d_11d8_82d7_003048245f6f_8391; Wed, 14 Jan 2004 08:23:16 -0600 (CST) Date: Wed, 14 Jan 2004 08:16:06 -0600 From: Tyson Long Subject: RE: Exact couch Long calibration Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 Content-type: text/plain; CHARSET=US-ASCII Content-transfer-encoding: 7bit Precedence: bulk X-MimeOLE: Produced By Microsoft Exchange V6.0.6249.0 content-class: urn:content-classes:message Thread-Topic: Exact couch Long calibration Thread-Index: AcPaMjdXdZ1vLFKvQEKlm9Z8gvy1SwAdj2aw X-NAIMIME-Disclaimer: 1 X-NAIMIME-Modified: 1 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 14 Jan 2004 08:16:06 -0600 From: Tyson Long Subject: RE: Exact couch Long calibration Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-MimeOLE: Produced By Microsoft Exchange V6.0.6249.0 content-class: urn:content-classes:message Thread-Topic: Exact couch Long calibration Thread-Index: AcPaMjdXdZ1vLFKvQEKlm9Z8gvy1SwAdj2aw X-NAIMIME-Disclaimer: 1 X-NAIMIME-Modified: 1 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f I believe you put a tape measure in the slot on the MedTec cal tool set it to 144 cm. Put the MedTec cal tool in the 0 spot on the couch and set crosshair to each of the measurements the cal. procedure gives you. Tyson Long Biomedical Equipment Specialist Mercy Medical Center Cedar Rapids, IA 52402 -----Original Message----- From: Stephen Jordan [mailto:srjordan@uabmc.edu] Sent: Tuesday, January 13, 2004 4:41 PM To: linac-eng@plato.aristotle.net Subject: Exact couch Long calibration Can someone tell me how the MedTec device is used to calibrate / verify the LONG motion of the Exact couch? I can't find it in my TMI or II material; my notes may have been made prior to the Exact couch's release. Thank you in advance! Steve Jordan UAB Rad Physics Confidentiality Notice: This message and any attachments may contain confidential and privileged information that is protected by law. The information contained herein is transmitted for the sole use of the intended recipient(s). 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If you received this email in error, please notify the sender immediately and permanently delete this email.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HRJ00MJW4GBTP@hubbard.azu.nl>; Thu, 15 Jan 2004 12:41:11 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004011512405922470 ; Thu, 15 Jan 2004 12:40:59 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id MAA15353; Thu, 15 Jan 2004 12:42:14 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma015196; Thu, 15 Jan 2004 12:41:43 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id DAA02706 for linac-eng-list; Thu, 15 Jan 2004 03:37:02 -0600 (CST) Received: from mail5.nhs.uk (mail5.nhs.uk [194.72.23.242]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id DAA02702 for ; Thu, 15 Jan 2004 03:37:00 -0600 (CST) Received: from hn-ext by mail5.nhs.uk (Sendmail 8.8.8) with esmtp id 1Ah3vQ-0003ZS-00; Thu, 15 Jan 2004 09:36:28 +0000 Received: from relay.nhs.uk (194.62.42.144) by relayint1.nhs.uk (Syntegra-I1 7.0.008) id 3FB9F76600AC239B for linac-eng@plato.aristotle.net; Thu, 15 Jan 2004 09:36:28 +0000 Received: from zixvpm01.royalsurrey.nhs.uk (194.155.12.204) by relay.nhs.uk (Syntegra-4 7.0.008) id 4003FCCA000E1DB6 for linac-eng@plato.aristotle.net; Thu, 15 Jan 2004 09:36:28 +0000 Received: from zixvpm01.royalsurrey.nhs.uk (ZixVPM [127.0.0.1]) by Outbound.zixvpm.royalsurrey.nhs.uk (Proprietary) with ESMTP id AC07E1B8095 for ; Thu, 15 Jan 2004 09:04:30 +0000 (GMT) Received: from mailsweeper.royalsurrey.nhs.uk (unknown [10.1.10.12]) by zixvpm01.royalsurrey.nhs.uk (Proprietary) with ESMTP id 8C3581A407D for ; Thu, 15 Jan 2004 09:04:30 +0000 (GMT) Received: from mail.royalsurrey.nhs.uk (unverified) by mailsweeper.royalsurrey.nhs.uk (Content Technologies SMTPRS 4.2.5) with ESMTP id ; Thu, 15 Jan 2004 09:35:30 +0000 Date: Thu, 15 Jan 2004 09:35:15 +0000 From: Morgan Ellis Subject: Re: Exact couch Long calibration In-reply-to: Sender: owner-linac-eng@plato.aristotle.net To: srjordan@uabmc.edu Cc: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 Content-type: text/plain; charset=ISO-8859-1 Content-transfer-encoding: 8bit Precedence: bulk References: X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 15 Jan 2004 09:35:15 +0000 From: Morgan Ellis Subject: Re: Exact couch Long calibration In-reply-to: Sender: owner-linac-eng@plato.aristotle.net To: srjordan@uabmc.edu Cc: linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hello Steve, 1. Attach the medtec lok-bar with the tape measure extended and secured to read 140cm in the viewing hole of the lok-bar to the couch top on indent 0. 2. Set couch vertical to ssd 100cm 3. Align the the 140cm mark on the tape measure to the light field cross hair on the ximatron. 4. Retract the couch away from the drive stand as far as it will go (about 15cm shown) 5. Enter calibration on ximatron. 6. For the "couch low" position indicated on the hand pendant, move the couch toward the drive stand until the tape measure indicates 20cm. Press enter to capture this position. For the "couch high" position indicated on the hand pendant, move the couch toward the drive stand until the tape measure indicates 115cm. Press enter to capture this position. 7. Exit the calibration routine. 8. Now you need to "offset" the couch long position readout. This can be to match the tape measure in the lok-bar or Clinac position readout. Align the 140cm position in the lok-bar under the cross hair again, see what the readout says and subtract from 140, the remainder is the offset. i.e readout says 125cm and tape states 140cm, offset equals 15cm. 9. To input the offset, use F5, press customisation, select password (varians is 4), select edit machine and press enter. In the edit machine dialog box press "couch offset", press setup, type the offset in and press enter. Then exit the routine, it is now calibrated. Hope all goes ok Morgan Morgan Ellis, Chief Technical Officer, Royal Surrey County Hospital, Guildford, Surrey. GU2 7XX Tel: 01483 406675 Fax: 01483 406884 E-Mail : morgan.ellis@royalsurrey.nhs.uk ********************************************************************** The information transmitted is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material. Any review, retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by persons or entities other than the intended recipient is prohibited. If you received this in error, please contact the sender and delete the material from any computer. Any opinions, conclusions and other information in this message that do not relate to the official business of the Royal Surrey County Hospital NHS Trust shall be understood as neither given nor endorsed by it. **********************************************************************  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HRJ00DXCFMJ8V@hubbard.azu.nl>; Thu, 15 Jan 2004 16:42:35 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004011516383811894 ; Thu, 15 Jan 2004 16:38:38 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id QAA09514; Thu, 15 Jan 2004 16:39:54 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma009387; Thu, 15 Jan 2004 16:39:12 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id HAA04271 for linac-eng-list; Thu, 15 Jan 2004 07:37:12 -0600 (CST) Received: from imsm033.netvigator.com (pcd528066.netvigator.com [218.102.60.66]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id HAA04267 for ; Thu, 15 Jan 2004 07:37:09 -0600 (CST) Received: (qmail 14221 invoked from network); Thu, 15 Jan 2004 13:36:53 +0000 Received: from pcd409149.netvigator.com (HELO kimyeung) (203.218.199.149) by imsm033.netvigator.com with SMTP; Thu, 15 Jan 2004 13:36:53 +0000 Date: Thu, 15 Jan 2004 21:26:09 +0800 From: Kim Yeung Subject: Re; DICOM image transfer problem Sender: owner-linac-eng@plato.aristotle.net To: Linac Message-id: <001401c3db6b$23202a40$0202a8c0@kimyeung> MIME-version: 1.0 X-Mailer: Microsoft Outlook Express 6.00.2800.1158 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_dZxKGSMFfzQr/wc9t52DKA)" Precedence: bulk X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 *** EOOH *** Date: Thu, 15 Jan 2004 21:26:09 +0800 From: Kim Yeung Subject: Re; DICOM image transfer problem Sender: owner-linac-eng@plato.aristotle.net To: Linac X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 This is a multi-part message in MIME format. --Boundary_(ID_dZxKGSMFfzQr/wc9t52DKA) Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: quoted-printable Hi Colleagues, =20 Could anyone advise or direct me to the website where I can find = details of the DICOM image header information? =20 We find the transfered image from CT scanner to the planning computer = have their origin shifted. Could anyone advise what are the possible = causes? =20 =20 Thanks in advance. =20 Kim Yeung --Boundary_(ID_dZxKGSMFfzQr/wc9t52DKA) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: quoted-printable
Hi Colleagues,
 
Could = anyone advise or=20 direct me to the website where I can find  details of the DICOM = image=20 header information?
 
We find the transfered image from CT = scanner to=20 the planning computer have their origin shifted. Could anyone advise = what are=20 the possible causes?
 
 
Thanks in = advance.
 
Kim=20 Yeung
--Boundary_(ID_dZxKGSMFfzQr/wc9t52DKA)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HRK00GDKX4Q0Z@hubbard.azu.nl>; Fri, 16 Jan 2004 11:58:05 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004011611580126657 ; Fri, 16 Jan 2004 11:58:01 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id LAA21891; Fri, 16 Jan 2004 11:59:19 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma021709; Fri, 16 Jan 2004 11:58:50 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id CAA21456 for linac-eng-list; Fri, 16 Jan 2004 02:38:21 -0600 (CST) Received: from avmail.chu-poitiers.fr (avmail.chu-poitiers.fr [194.214.37.4]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id CAA21452 for ; Fri, 16 Jan 2004 02:38:18 -0600 (CST) Received: (from RATH67 [126.0.43.67]) by avmail.chu-poitiers.fr (SAVSMTP 3.1.0.29) with SMTP id M2004011609331411046 for ; Fri, 16 Jan 2004 09:33:14 +0100 Date: Fri, 16 Jan 2004 09:37:43 +0100 From: "J. M. Callaud" Subject: dicom Web Site Sender: owner-linac-eng@plato.aristotle.net To: linac-eng Message-id: <002101c3dc0c$02c1cf00$432b007e@RATH67> MIME-version: 1.0 X-Mailer: Microsoft Outlook Express 6.00.2800.1106 Content-type: MULTIPART/related; BOUNDARY="Boundary_(ID_OaHuLE2Gu2kEr9Bkm8/b+Q)"; type="multipart/alternative" Precedence: bulk X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 *** EOOH *** Date: Fri, 16 Jan 2004 09:37:43 +0100 From: "J. M. Callaud" Subject: dicom Web Site Sender: owner-linac-eng@plato.aristotle.net To: linac-eng X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 This is a multi-part message in MIME format. --Boundary_(ID_OaHuLE2Gu2kEr9Bkm8/b+Q) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_JWRl++E4iUrq7AvIpdXTGA)" --Boundary_(ID_JWRl++E4iUrq7AvIpdXTGA) Content-type: text/plain; charset=Windows-1252 Content-transfer-encoding: quoted-printable The officiel web site for Dicom is : http://medical.nema.org/ j.m.callaud@chu-poitiers.fr Adjoint technique Service de radioth=E9rapie CHU POITIERS Tel:(33) 05 49 44 39 54 --Boundary_(ID_JWRl++E4iUrq7AvIpdXTGA) Content-type: text/html; charset=Windows-1252 Content-transfer-encoding: quoted-printable
The officiel web site for Dicom is : http://medical.nema.org/
 
 
 
 
j.m.callaud@chu-poitiers.fr
Adjoint=20 technique
Service de radioth=E9rapie
CHU POITIERS
Tel:(33) 05 = 49 44 39=20 54
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09:58:11 -0600 (CST) Received: from Xraytherapy@aol.com by imo-m07.mx.aol.com (mail_out_v36_r4.12.) id y.d2.32ff9eb (4410) for ; Fri, 16 Jan 2004 10:57:37 -0500 (EST) Date: Fri, 16 Jan 2004 10:57:37 -0500 (EST) From: Xraytherapy@aol.com Subject: Philips RT 100 Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: 8.0 for Windows sub 6021 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_SQL4t0SIIT+fgh2z0HWPSQ)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 16 Jan 2004 10:57:37 -0500 (EST) From: Xraytherapy@aol.com Subject: Philips RT 100 Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f --Boundary_(ID_SQL4t0SIIT+fgh2z0HWPSQ) Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7bit Hello All, I am looking for Philips RT 100 superficial therapy machines. Please contact me directly if you have one available. Doug Steers Danbury Engineering Inc. 149-153 Grassy Plain St. Unit 6C, REAR DOOR Bethel, CT 06801 203-748-5107 www.danburyengineering.com --Boundary_(ID_SQL4t0SIIT+fgh2z0HWPSQ) Content-type: text/html; charset=US-ASCII Content-transfer-encoding: quoted-printable Hello All,

I am looking for Philips RT 100 superficial therapy machines. Please contact= me directly if you have one available.

Doug Steers
Danbury Engineering Inc.
149-153 Grassy Plain St.
Unit 6C, REAR DOOR
Bethel, CT 06801
203-748-5107
www.danburyengineering.com --Boundary_(ID_SQL4t0SIIT+fgh2z0HWPSQ)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HRQ00CHOQGHD1@hubbard.azu.nl>; Mon, 19 Jan 2004 15:19:41 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004011915192818099 ; Mon, 19 Jan 2004 15:19:28 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id PAA14525; Mon, 19 Jan 2004 15:20:48 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma014345; Mon, 19 Jan 2004 15:20:01 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id GAA13652 for linac-eng-list; Mon, 19 Jan 2004 06:22:23 -0600 (CST) Received: from mphd-bsd.leeds.ac.uk (mphd-bsd.leeds.ac.uk [129.11.224.45]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id GAA13648 for ; Mon, 19 Jan 2004 06:22:21 -0600 (CST) Received: from medphysics.leeds.ac.uk (mphd1 [129.11.224.65]) by mphd-bsd.leeds.ac.uk (8.12.10/8.11.6) with ESMTP id i0JCMGpp053957; Mon, 19 Jan 2004 12:22:16 +0000 (envelope-from SJW@medphysics.leeds.ac.uk) Received: from MPHD1/SpoolDir by medphysics.leeds.ac.uk (Mercury 1.48); Mon, 19 Jan 2004 12:21:27 +0000 Received: from SpoolDir by MPHD1 (Mercury 1.48); Mon, 19 Jan 2004 12:21:25 +0000 Date: Mon, 19 Jan 2004 12:21:19 +0000 From: Steve Weston Subject: Re: Re; DICOM image transfer problem In-reply-to: <001401c3db6b$23202a40$0202a8c0@kimyeung> Sender: owner-linac-eng@plato.aristotle.net To: Kim Yeung , Linac Message-id: <400BCC7B.11098.24C68D9D@localhost> MIME-version: 1.0 X-Mailer: Pegasus Mail for Windows (v4.12a) Content-type: text/plain; charset=US-ASCII Content-description: Mail message body Content-transfer-encoding: 7BIT Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 19 Jan 2004 12:21:19 +0000 From: Steve Weston Subject: Re: Re; DICOM image transfer problem In-reply-to: <001401c3db6b$23202a40$0202a8c0@kimyeung> Sender: owner-linac-eng@plato.aristotle.net To: Kim Yeung , Linac Content-description: Mail message body X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Kim, Try comparing the dicom conformance statements for the CT scanner and the TPS. Also contact the manufacturers to make sure you have the right conformance statement for the version of software that you are using... Its painful work but the clues should be in there. Steve On 15 Jan 2004 at 21:26, Kim Yeung wrote: > > Hi Colleagues, > > Could anyone advise or direct me to the website where I can find details of the DICOM image > header information? > > We find the transfered image from CT scanner to the planning computer have their origin shifted. > Could anyone advise what are the possible causes? > > > Thanks in advance. > > Kim Yeung > --------------------------------------------------------------------- S.J.Weston, Phone: 0113 3924315 Dept.of Medical Physics, FAX: 0113 3924122 Cookridge Hospital, Leeds Teaching Hospitals Trust. LEEDS LS16 6QB UK ---------------------------------------------------------------------  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HRQ00L3DWB00J@hubbard.azu.nl>; Mon, 19 Jan 2004 17:25:50 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004011917254713865 ; Mon, 19 Jan 2004 17:25:47 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id RAA13132; Mon, 19 Jan 2004 17:27:07 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma013052; Mon, 19 Jan 2004 17:26:30 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id IAA15128 for linac-eng-list; Mon, 19 Jan 2004 08:33:25 -0600 (CST) Received: from bhcpns.org ([199.190.155.93]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id IAA15124 for ; Mon, 19 Jan 2004 08:33:23 -0600 (CST) Received: from ([10.5.30.69]) by ironmail.bhcpns.org with ESMTP ; Mon, 19 Jan 2004 08:31:45 -0600 (CST) Date: Mon, 19 Jan 2004 08:30:45 -0600 From: lsullivan@bhcpns.org Subject: looking for Used Simulator/accelerator Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Lotus Notes Release 6.5 September 26, 2003 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_4BzQC6ZKlAx1RgAB6RCLBg)" Precedence: bulk X-MIMETrack: Serialize by Router on BHCMail1/PNS/BHC_Notes(Release 6.0.2CF1|June 9, 2003) at 01/19/2004 08:30:46 AM, Serialize complete at 01/19/2004 08:30:46 AM X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 19 Jan 2004 08:30:45 -0600 From: lsullivan@bhcpns.org Subject: looking for Used Simulator/accelerator Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-MIMETrack: Serialize by Router on BHCMail1/PNS/BHC_Notes(Release 6.0.2CF1|June 9, 2003) at 01/19/2004 08:30:46 AM, Serialize complete at 01/19/2004 08:30:46 AM X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This is a multipart message in MIME format. --Boundary_(ID_4BzQC6ZKlAx1RgAB6RCLBg) Content-type: text/plain; charset=US-ASCII Good day all,, We are currently building a stand alone clinic and are looking for a used ximatron and used 2100c w/type two acc, this will be a low volume center we think less than 10 patients per day. I currently have an 1800 but would like to install 2100 please reply to email if you know location of unit will need accelerator after March this year. The simulator is not as urgent as we can send patients to another office at startup,, Thank you in advance Larry Sullivan ----------------------------------------- All electronic mail communications originating from or transmitted to Baptist Health Care, Inc. are subject to monitoring. This message and the information contained in it, which may consist of electronic data attachments, are the confidential and proprietary communications of Baptist Health Care and are intended to be received only by the individual or individuals to whom the message has been addressed. If the reader of this message is not the intended recipient, please take notice that any use, copying, printing, forwarding or distribution of this message, in any form, is strictly prohibited. If you have received this message in error, please immediately notify the Baptist Health Care Privacy Officer at (850) 434-4472 and/or forward the message to hipaa@bhcpns.org and delete or destroy all copies of this message. --Boundary_(ID_4BzQC6ZKlAx1RgAB6RCLBg) Content-type: text/html; charset=US-ASCII
Good day all,,  We are currently building a stand alone clinic and are looking for a used ximatron and used 2100c w/type two acc,    this will be a low volume center we think   less than 10 patients per day. I currently have an 1800 but would like to install 2100 please reply to email if you know location of unit will need accelerator after March this year.  The simulator is not as urgent as we can send patients to another office at startup,,


Thank you in advance
Larry Sullivan

All electronic mail communications originating from or transmitted to Baptist Health Care, Inc. are subject to monitoring. This message and the information contained in it, which may consist of electronic data attachments, are the confidential and proprietary communications of Baptist Health Care and are intended to be received only by the individual or individuals to whom the message has been addressed. If the reader of this message is not the intended recipient, please take notice that any use, copying, printing, forwarding or distribution of this message, in any form, is strictly prohibited. If you have received this message in error, please immediately notify the Baptist Health Care Privacy Officer at (850) 434-4472 and/or forward the message to hipaa@bhcpns.org and delete or destroy all copies of this message.

--Boundary_(ID_4BzQC6ZKlAx1RgAB6RCLBg)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HRS004EBH30RN@hubbard.azu.nl>; Tue, 20 Jan 2004 13:52:17 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004012013521115346 ; Tue, 20 Jan 2004 13:52:11 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id NAA13270; Tue, 20 Jan 2004 13:53:32 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma013097; Tue, 20 Jan 2004 13:52:44 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id EAA01035 for linac-eng-list; Tue, 20 Jan 2004 04:46:19 -0600 (CST) Received: from HRPOP2TR (134.Red-80-32-226.pooles.rima-tde.net [80.32.226.134]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id EAA01030 for ; Tue, 20 Jan 2004 04:46:16 -0600 (CST) Received: from mail pickup service by HRPOP2TR with Microsoft SMTPSVC; Tue, 20 Jan 2004 11:45:32 +0100 Received: from plato.aristotle.net ([206.66.224.2]) by HRPOP1TR with Microsoft SMTPSVC(5.0.2195.6713); Mon, 19 Jan 2004 17:20:26 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id IAA15128 for linac-eng-list; Mon, 19 Jan 2004 08:33:25 -0600 (CST) Received: from bhcpns.org ([199.190.155.93]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id IAA15124 for ; Mon, 19 Jan 2004 08:33:23 -0600 (CST) Received: from ([10.5.30.69]) by ironmail.bhcpns.org with ESMTP ; Mon, 19 Jan 2004 08:31:45 -0600 (CST) Date: Mon, 19 Jan 2004 08:30:45 -0600 From: lsullivan@bhcpns.org Subject: looking for Used Simulator/accelerator Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Lotus Notes Release 6.5 September 26, 2003 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_bq4YCXih9T9KD2RLlsqZWg)" Precedence: bulk X-MIMETrack: Serialize by Router on BHCMail1/PNS/BHC_Notes(Release 6.0.2CF1|June 9, 2003) at 01/19/2004 08:30:46 AM, Serialize complete at 01/19/2004 08:30:46 AM X-OriginalArrivalTime: 19 Jan 2004 16:20:26.0573 (UTC) FILETIME=[25C02FD0:01C3DEA8] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 19 Jan 2004 08:30:45 -0600 From: lsullivan@bhcpns.org Subject: looking for Used Simulator/accelerator Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-MIMETrack: Serialize by Router on BHCMail1/PNS/BHC_Notes(Release 6.0.2CF1|June 9, 2003) at 01/19/2004 08:30:46 AM, Serialize complete at 01/19/2004 08:30:46 AM X-OriginalArrivalTime: 19 Jan 2004 16:20:26.0573 (UTC) FILETIME=[25C02FD0:01C3DEA8] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This is a multipart message in MIME format. --Boundary_(ID_bq4YCXih9T9KD2RLlsqZWg) Content-type: text/plain; charset=US-ASCII Good day all,, We are currently building a stand alone clinic and are looking for a used ximatron and used 2100c w/type two acc, this will be a low volume center we think less than 10 patients per day. I currently have an 1800 but would like to install 2100 please reply to email if you know location of unit will need accelerator after March this year. The simulator is not as urgent as we can send patients to another office at startup,, Thank you in advance Larry Sullivan ----------------------------------------- All electronic mail communications originating from or transmitted to Baptist Health Care, Inc. are subject to monitoring. This message and the information contained in it, which may consist of electronic data attachments, are the confidential and proprietary communications of Baptist Health Care and are intended to be received only by the individual or individuals to whom the message has been addressed. If the reader of this message is not the intended recipient, please take notice that any use, copying, printing, forwarding or distribution of this message, in any form, is strictly prohibited. If you have received this message in error, please immediately notify the Baptist Health Care Privacy Officer at (850) 434-4472 and/or forward the message to hipaa@bhcpns.org and delete or destroy all copies of this message. --Boundary_(ID_bq4YCXih9T9KD2RLlsqZWg) Content-type: text/html; charset=US-ASCII
Good day all,,  We are currently building a stand alone clinic and are looking for a used ximatron and used 2100c w/type two acc,    this will be a low volume center we think   less than 10 patients per day. I currently have an 1800 but would like to install 2100 please reply to email if you know location of unit will need accelerator after March this year.  The simulator is not as urgent as we can send patients to another office at startup,,


Thank you in advance
Larry Sullivan

All electronic mail communications originating from or transmitted to Baptist Health Care, Inc. are subject to monitoring. This message and the information contained in it, which may consist of electronic data attachments, are the confidential and proprietary communications of Baptist Health Care and are intended to be received only by the individual or individuals to whom the message has been addressed. If the reader of this message is not the intended recipient, please take notice that any use, copying, printing, forwarding or distribution of this message, in any form, is strictly prohibited. If you have received this message in error, please immediately notify the Baptist Health Care Privacy Officer at (850) 434-4472 and/or forward the message to hipaa@bhcpns.org and delete or destroy all copies of this message.

--Boundary_(ID_bq4YCXih9T9KD2RLlsqZWg)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HRS00DPPMCXVR@hubbard.azu.nl>; Tue, 20 Jan 2004 15:46:19 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004012015460823246 ; Tue, 20 Jan 2004 15:46:08 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id PAA11300; Tue, 20 Jan 2004 15:47:28 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma011096; Tue, 20 Jan 2004 15:46:45 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id GAA02344 for linac-eng-list; Tue, 20 Jan 2004 06:30:50 -0600 (CST) Received: from imsmq05.netvigator.com (n219076066020.netvigator.com [219.76.66.20]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id GAA02340 for ; Tue, 20 Jan 2004 06:30:47 -0600 (CST) Received: (qmail 9752 invoked from network); Tue, 20 Jan 2004 12:30:31 +0000 Received: from pcd641253.netvigator.com (HELO kimyeung) (218.102.173.253) by imsmq05.netvigator.com with SMTP; Tue, 20 Jan 2004 12:30:31 +0000 Date: Tue, 20 Jan 2004 20:19:39 +0800 From: Kim Yeung Subject: Re: CLFA interlock Sender: owner-linac-eng@plato.aristotle.net To: Linac Message-id: <007d01c3df4f$ad6391a0$0202a8c0@kimyeung> MIME-version: 1.0 X-Mailer: Microsoft Outlook Express 6.00.2800.1158 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_FzUGFlPKXADcu0w4Kuzbdg)" Precedence: bulk X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 *** EOOH *** Date: Tue, 20 Jan 2004 20:19:39 +0800 From: Kim Yeung Subject: Re: CLFA interlock Sender: owner-linac-eng@plato.aristotle.net To: Linac X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 This is a multi-part message in MIME format. --Boundary_(ID_FzUGFlPKXADcu0w4Kuzbdg) Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: quoted-printable Hi Colleagues, Varian 2300CD T-drive , version 6.1 We used to have two cal check interlocks every day, one in the early = morning and one in the after lunch break, both incidents occur at 20MV. Checking the event logs we found the GUN I value was changed from 4.32 = to about 2.34 in all the incidents. It seems the GUN I is a "dead" voltage and does not play a role in the = cal check process, is it correct? Could anyone comment on the above issue? Thanks in advance. Kim Yeung --Boundary_(ID_FzUGFlPKXADcu0w4Kuzbdg) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: quoted-printable
Hi Colleagues,
 
Varian 2300CD  T-drive , version=20 6.1
 
We used to have two cal check = interlocks every day,=20  one in the early morning and one in the after lunch break, = both=20 incidents occur at 20MV.
 
Checking the event logs we found = the GUN I=20 value was changed from 4.32 to about 2.34 in all the = incidents.
 
It seems the GUN I is a "dead" voltage = and does not=20 play a role in the cal check process, is it correct?
 
Could anyone comment on the above=20 issue?
 
Thanks in advance.
 
Kim Yeung
--Boundary_(ID_FzUGFlPKXADcu0w4Kuzbdg)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HRT00D54ARUES@hubbard.azu.nl>; Wed, 21 Jan 2004 00:33:32 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004012100333019559 ; Wed, 21 Jan 2004 00:33:30 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id AAA20564; Wed, 21 Jan 2004 00:34:50 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma020363; Wed, 21 Jan 2004 00:33:54 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id OAA09898 for linac-eng-list; Tue, 20 Jan 2004 14:57:25 -0600 (CST) Received: from dalwhinnie.chhlth.govt.nz ([203.163.70.2]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id OAA09894 for ; Tue, 20 Jan 2004 14:57:22 -0600 (CST) Received: from mailsweeper2.chhlth.govt.nz (mailsweeper2.chhlth.govt.nz [159.117.18.162]) by dalwhinnie.chhlth.govt.nz (8.12.8/8.12.5) with ESMTP id i0KKwufU032188 for ; Wed, 21 Jan 2004 09:58:57 +1300 Received: from SMTPGATE.CHHLTH.GOVT.NZ (unverified) by mailsweeper2.chhlth.govt.nz (Content Technologies SMTPRS 4.3.1) with ESMTP id for ; Wed, 21 Jan 2004 09:55:23 +1300 Received: from CHCH2-MTA by SMTPGATE.CHHLTH.GOVT.NZ with Novell_GroupWise; Wed, 21 Jan 2004 09:56:48 +1300 Date: Wed, 21 Jan 2004 09:56:35 +1300 From: Dave Pinchin Subject: Re: CLFA interlock Sender: owner-linac-eng@plato.aristotle.net To: kimyeung@netvigator.com, linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.0.4 Content-type: text/plain; charset=us-ascii Content-disposition: inline Content-transfer-encoding: 8bit Precedence: bulk X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id OAA09895 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 21 Jan 2004 09:56:35 +1300 From: Dave Pinchin Subject: Re: CLFA interlock Sender: owner-linac-eng@plato.aristotle.net To: kimyeung@netvigator.com, linac-eng@plato.aristotle.net Content-disposition: inline X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id OAA09895 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f G'day Kim, If I remember correctly (and 2100s are baby 2300s ! ! ! ! !)........ There are two parts to the cal-check. 1/ CAL - In this there is a preset / assymetric current fed into the far side of the ion chambers. This should count up to a known MU. If it doesn't then there's a CAL interlock 2/ CHK - In this one most of the interlocks of the machine are tested. That is why there is an assymetric current for the CAL cycle. Any interlock that doesn't trip is reported along with a CHK interlock. It may be that your trouble is that the GUNI monitor is not opening. Dave. (hope I havn't made an ass of myself) >>> "Kim Yeung" 21/01/04 01:19:39 >>> Hi Colleagues, Varian 2300CD T-drive , version 6.1 We used to have two cal check interlocks every day, one in the early morning and one in the after lunch break, both incidents occur at 20MV. Checking the event logs we found the GUN I value was changed from 4.32 to about 2.34 in all the incidents. It seems the GUN I is a "dead" voltage and does not play a role in the cal check process, is it correct? Could anyone comment on the above issue? Thanks in advance. Kim Yeung ********************************************************************** ** This email and attachments have been scanned for content and viruses and is believed to be clean ** This email or attachments may contain confidential or legally privileged information intended for the sole use of the addressee(s). Any use, redistribution, disclosure, or reproduction of this message, except as intended, is prohibited. If you received this email in error, please notify the sender and remove all copies of the message, including any attachments. Any views or opinions expressed in this email (unless otherwise stated) may not represent those of Canterbury District Health Board **********************************************************************  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HRU004IVU5J8N@hubbard.azu.nl>; Wed, 21 Jan 2004 20:29:45 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004012120294316057 ; Wed, 21 Jan 2004 20:29:43 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id UAA10220; Wed, 21 Jan 2004 20:31:04 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma010196; Wed, 21 Jan 2004 20:30:46 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id LAA24776 for linac-eng-list; Wed, 21 Jan 2004 11:02:23 -0600 (CST) Received: from mail22.nhs.uk (mail22.nhs.uk [62.6.139.218]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id LAA24769 for ; Wed, 21 Jan 2004 11:02:20 -0600 (CST) Received: from [10.191.254.3] (helo=relayint1.nhs.uk) by mail22.nhs.uk with esmtp (MTC MTA) id 1AjLjh-0005vF-Oe for linac-eng@plato.aristotle.net; Wed, 21 Jan 2004 17:01:49 +0000 Received: from relay.nhs.uk (194.62.42.144) by relayint1.nhs.uk (Syntegra-I1 7.0.008) id 3FB9F76600C4264A for linac-eng@plato.aristotle.net; Wed, 21 Jan 2004 17:01:49 +0000 Received: from beijing.relay.grampian.scot.nhs.uk (10.251.30.7) by relay.nhs.uk (Syntegra-4 7.0.008) (authenticated as relay_grampian_scot_nhs_uk@es2002.nhs.uk) id 400E85AC0001FAD1 for linac-eng@plato.aristotle.net; Wed, 21 Jan 2004 17:01:49 +0000 Received: from arh-mail2.arh.grampian.scot.nhs.uk ([9.16.60.28]) by beijing.relay.grampian.scot.nhs.uk with Microsoft SMTPSVC(5.0.2195.6713) ; Wed, 21 Jan 2004 16:57:10 +0000 Received: by arh-mail2.arh.grampian.scot.nhs.uk with Internet Mail Service (5.5.2657.72) id ; Wed, 21 Jan 2004 16:57:12 +0000 Date: Wed, 21 Jan 2004 16:59:46 +0000 From: David.Smith@arh.grampian.scot.nhs.uk Subject: False triggering of floor beeper in 600CD with dropping floor [Scanned By SOPHOS Anti-Virus] Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 7bit Importance: normal Precedence: bulk thread-index: AcPgP5wGYHgL3STFT4SDHScqS6xPGA== Content-Class: urn:content-classes:message X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4927.1200 X-OriginalArrivalTime: 21 Jan 2004 16:57:10.0109 (UTC) FILETIME=[9BFC98D0:01C3E03F] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 21 Jan 2004 16:59:46 +0000 From: David.Smith@arh.grampian.scot.nhs.uk Subject: False triggering of floor beeper in 600CD with dropping floor [Scanned By SOPHOS Anti-Virus] Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Importance: normal thread-index: AcPgP5wGYHgL3STFT4SDHScqS6xPGA== Content-Class: urn:content-classes:message X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4927.1200 X-OriginalArrivalTime: 21 Jan 2004 16:57:10.0109 (UTC) FILETIME=[9BFC98D0:01C3E03F] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f All, We have just managed to cure a rather spooky fault. I was wondering if anyone else has come across it. Anyway the problem was as follows: If the Gantry was between about 60 and 115 degrees (before the normal trigger point for beeper) and the head was rotated anti-clockwise into the end stop then the floor beeper would sound for its normal 2 secs or so. After eliminating broken gantry cables we reckoned it had to be noise induced. While hanging the scope on the base of Q3 on the EMAG I/L & VEO CONTROLLER pcb 1102711 we noticed a slight positive going spike which was sufficient to turn on this transistor which in turn triggered the 555 monostable. To remove the spike we decoupled the base of Q3 with a 0.1 microfarad capacitor and all was well. If this is a fairly common problem then perhaps the boards should be factory modified before the machines are released. Dave S  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HRW0053UPLVVC@hubbard.azu.nl>; Thu, 22 Jan 2004 20:46:45 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004012220464222697 ; Thu, 22 Jan 2004 20:46:42 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id UAA08931; Thu, 22 Jan 2004 20:48:04 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma008910; Thu, 22 Jan 2004 20:47:35 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id LAA12992 for linac-eng-list; Thu, 22 Jan 2004 11:27:50 -0600 (CST) Received: from imo-r03.mx.aol.com (imo-r03.mx.aol.com [152.163.225.99]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id LAA12988 for ; Thu, 22 Jan 2004 11:27:49 -0600 (CST) Received: from Mlaa@aol.com by imo-r03.mx.aol.com (mail_out_v36_r4.12.) id y.109.2bc49cf4 (3964) for ; Thu, 22 Jan 2004 12:27:06 -0500 (EST) Date: Thu, 22 Jan 2004 12:27:06 -0500 (EST) From: Mlaa@aol.com Subject: CL 2500 parts Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <109.2bc49cf4.2d4161ea@aol.com> MIME-version: 1.0 X-Mailer: 9.0 for Windows sub 5006 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_SOvA58DaCCKmV/Pl+Kt5ng)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 22 Jan 2004 12:27:06 -0500 (EST) From: Mlaa@aol.com Subject: CL 2500 parts Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f --Boundary_(ID_SOvA58DaCCKmV/Pl+Kt5ng) Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7bit Hello to all, I am looking for a Collimator and Air Solenoind Driver PCB for a CL 2500. Part number is 857761-00. If anyone has one that please let me know. Thanks Mike Liddicote Accelerartor Associates --Boundary_(ID_SOvA58DaCCKmV/Pl+Kt5ng) Content-type: text/html; charset=US-ASCII Content-transfer-encoding: quoted-printable
Hello to all,
    I am looking for a Collimator and Air Solenoind Driv= er PCB for a CL 2500.  Part number is  857761-00.  If an= yone has one that please let me know.  Thanks
Mike Liddicote
Accelerartor Associates
--Boundary_(ID_SOvA58DaCCKmV/Pl+Kt5ng)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HRX00HE826K83@hubbard.azu.nl>; Fri, 23 Jan 2004 01:18:21 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004012301181910163 ; Fri, 23 Jan 2004 01:18:19 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id BAA04153; Fri, 23 Jan 2004 01:19:41 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma004129; Fri, 23 Jan 2004 01:19:23 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id QAA20122 for linac-eng-list; Thu, 22 Jan 2004 16:13:24 -0600 (CST) Received: from PHSEXCHICO.MGH.HARVARD.EDU (phsexchico.mgh.harvard.edu [132.183.126.50]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id QAA20118 for ; Thu, 22 Jan 2004 16:13:23 -0600 (CST) Received: by phsexchico.mgh.harvard.edu with Internet Mail Service (5.5.2657.72) id ; Thu, 22 Jan 2004 17:12:51 -0500 Date: Thu, 22 Jan 2004 17:12:48 -0500 From: "Maddox, Buford J" Subject: RE: False triggering of floor beeper in 600CD with dropping floor [Scanned By SOPHOS Anti-Virus] Sender: owner-linac-eng@plato.aristotle.net To: "'David.Smith@arh.grampian.scot.nhs.uk'" , linac-eng@plato.aristotle.net Message-id: <36298D09ED1AD311B4DC0008C7F4D4E11146632E@phsexch6.partners.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 22 Jan 2004 17:12:48 -0500 From: "Maddox, Buford J" Subject: RE: False triggering of floor beeper in 600CD with dropping floor [Scanned By SOPHOS Anti-Virus] Sender: owner-linac-eng@plato.aristotle.net To: "'David.Smith@arh.grampian.scot.nhs.uk'" , linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f I have seen a similar problem where any activation of a device on the 24v line, such as key on, door closing, relays, etc. Also depended on the setting of the motion stop switches, couch operation, and other things. Many things would set off the beeper. It was also temperature dependent, went away if cover was removed. Cover off, no false beeps. Jerry -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of David.Smith@arh.grampian.scot.nhs.uk Sent: Wednesday, January 21, 2004 12:00 PM To: linac-eng@plato.aristotle.net Subject: False triggering of floor beeper in 600CD with dropping floor [Scanned By SOPHOS Anti-Virus] All, We have just managed to cure a rather spooky fault. I was wondering if anyone else has come across it. Anyway the problem was as follows: If the Gantry was between about 60 and 115 degrees (before the normal trigger point for beeper) and the head was rotated anti-clockwise into the end stop then the floor beeper would sound for its normal 2 secs or so. After eliminating broken gantry cables we reckoned it had to be noise induced. While hanging the scope on the base of Q3 on the EMAG I/L & VEO CONTROLLER pcb 1102711 we noticed a slight positive going spike which was sufficient to turn on this transistor which in turn triggered the 555 monostable. To remove the spike we decoupled the base of Q3 with a 0.1 microfarad capacitor and all was well. If this is a fairly common problem then perhaps the boards should be factory modified before the machines are released. Dave S  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HS2009RAV7FH1@hubbard.azu.nl>; Mon, 26 Jan 2004 04:33:17 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004012604331411791 ; Mon, 26 Jan 2004 04:33:14 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id EAA04875; Mon, 26 Jan 2004 04:34:38 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma004853; Mon, 26 Jan 2004 04:34:20 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id UAA13604 for linac-eng-list; Sun, 25 Jan 2004 20:04:48 -0600 (CST) Received: from lisa.cityu.edu.hk (lisa.cityu.edu.hk [144.214.5.205]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id UAA13600 for ; Sun, 25 Jan 2004 20:04:46 -0600 (CST) Received: from conversion-daemon.alumni.cityu.edu.hk by alumni.cityu.edu.hk (iPlanet Messaging Server 5.1 HotFix 1.12 (built Mar 11 2003)) id <0HS200701OO4KS@alumni.cityu.edu.hk> for linac-eng@plato.aristotle.net; Mon, 26 Jan 2004 10:04:18 +0800 (CST) Received: from stdwebmail.cityu.edu.hk (faye.cityu.edu.hk [144.214.5.25]) by alumni.cityu.edu.hk (iPlanet Messaging Server 5.1 HotFix 1.12 (built Mar 11 2003)) with ESMTP id <0HS2009U3QT8CP@alumni.cityu.edu.hk> for linac-eng@plato.aristotle.net; Mon, 26 Jan 2004 09:58:20 +0800 (CST) Date: Mon, 26 Jan 2004 09:57:42 +0800 From: Jonathan Chan Subject: Elekta Dose Rate Tuning Sender: owner-linac-eng@plato.aristotle.net To: Linac List Message-id: <401478AE@stdwebmail.cityu.edu.hk> MIME-version: 1.0 X-Mailer: InterChange (Hydra) SMTP v3.62 Content-type: text/plain; charset=ISO-8859-1 Content-transfer-encoding: 7BIT Precedence: bulk X-WebMail-UserId: 88083171@alumni.cityu.edu.hk X-EXP32-SerialNo: 50000161 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 26 Jan 2004 09:57:42 +0800 From: Jonathan Chan Subject: Elekta Dose Rate Tuning Sender: owner-linac-eng@plato.aristotle.net To: Linac List X-WebMail-UserId: 88083171@alumni.cityu.edu.hk X-EXP32-SerialNo: 50000161 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Dear list members, Another question about the Elekta's machine tuning. I could see the horn changing (beam profiles) when I changed the gun current. Quite sensitive. But this is the way (or is there any other way?) to restore the nominal dose rate for photon energies, with the AFC optimized already. Any comment? Jonathan Chan  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HS2009RCV7GH1@hubbard.azu.nl>; Mon, 26 Jan 2004 04:33:17 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004012604331504184 ; Mon, 26 Jan 2004 04:33:15 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id EAA04877; Mon, 26 Jan 2004 04:34:38 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma004854; Mon, 26 Jan 2004 04:34:20 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id TAA13522 for linac-eng-list; Sun, 25 Jan 2004 19:53:30 -0600 (CST) Received: from lisa.cityu.edu.hk (lisa.cityu.edu.hk [144.214.5.205]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id TAA13518 for ; Sun, 25 Jan 2004 19:53:28 -0600 (CST) Received: from conversion-daemon.alumni.cityu.edu.hk by alumni.cityu.edu.hk (iPlanet Messaging Server 5.1 HotFix 1.12 (built Mar 11 2003)) id <0HS200701OO4KS@alumni.cityu.edu.hk> for linac-eng@plato.aristotle.net; Mon, 26 Jan 2004 09:52:57 +0800 (CST) Received: from stdwebmail.cityu.edu.hk (faye.cityu.edu.hk [144.214.5.25]) by alumni.cityu.edu.hk (iPlanet Messaging Server 5.1 HotFix 1.12 (built Mar 11 2003)) with ESMTP id <0HS2009KTQCFCP@alumni.cityu.edu.hk> for linac-eng@plato.aristotle.net; Mon, 26 Jan 2004 09:48:15 +0800 (CST) Date: Mon, 26 Jan 2004 09:47:37 +0800 From: Jonathan Chan Subject: Elekta MLC Sender: owner-linac-eng@plato.aristotle.net To: Linac List Message-id: <401473AE@stdwebmail.cityu.edu.hk> MIME-version: 1.0 X-Mailer: InterChange (Hydra) SMTP v3.62 Content-type: text/plain; charset=ISO-8859-1 Content-transfer-encoding: 7BIT Precedence: bulk X-WebMail-UserId: 88083171@alumni.cityu.edu.hk X-EXP32-SerialNo: 50000161 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 26 Jan 2004 09:47:37 +0800 From: Jonathan Chan Subject: Elekta MLC Sender: owner-linac-eng@plato.aristotle.net To: Linac List X-WebMail-UserId: 88083171@alumni.cityu.edu.hk X-EXP32-SerialNo: 50000161 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Dear list members, A simple question about Elekta's MLCs. The 4 reference reflectors are just for integrity check only? If, for some reason, the video position of one of the reference reflectors has to be re-adjusted slightly (not due to any movement of the optics nor physical shift of the reference reflectors), is it necessary to re-do all leaf bank calibrations and etc? Thanks, Jonathan Chan  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HS300BG9HCU4R@hubbard.azu.nl>; Mon, 26 Jan 2004 12:31:44 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004012612314132204 ; Mon, 26 Jan 2004 12:31:41 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id MAA20989; Mon, 26 Jan 2004 12:33:05 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma020891; Mon, 26 Jan 2004 12:32:44 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id DAA18992 for linac-eng-list; Mon, 26 Jan 2004 03:40:31 -0600 (CST) Received: from mail23.nhs.uk (mail23.nhs.uk [62.6.139.221]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id DAA18988 for ; Mon, 26 Jan 2004 03:40:29 -0600 (CST) Received: from [10.191.254.3] (helo=relayint2.nhs.uk) by mail23.nhs.uk with esmtp (MTC MTA) id 1Al3Dq-0002gI-U8 for linac-eng@plato.aristotle.net; Mon, 26 Jan 2004 09:39:58 +0000 Received: from relay.nhs.uk (194.62.42.144) by relayint2.nhs.uk (Syntegra-I2 7.0.008) id 3FB9F97900EED6F9 for linac-eng@plato.aristotle.net; Mon, 26 Jan 2004 09:39:58 +0000 Received: from relay.wales.nhs.uk (194.189.180.1) by relay.nhs.uk (Syntegra-4 7.0.008) id 4011386F000CA509 for linac-eng@plato.aristotle.net; Mon, 26 Jan 2004 09:39:58 +0000 Received: from ygc-mail.cd-tr.wales.nhs.uk (131.3.9.10) by relay.wales.nhs.uk (NPlex 2.0.108) for linac-eng@plato.aristotle.net; Mon, 26 Jan 2004 09:39:50 +0000 Received: by YGC-MAIL with Internet Mail Service (5.5.2653.19) id ; Mon, 26 Jan 2004 09:40:09 +0000 Date: Mon, 26 Jan 2004 09:27:08 +0000 From: "Jordan, Tom" Subject: RE: Elekta MLC Sender: owner-linac-eng@plato.aristotle.net To: Linac List Message-id: <4BD1673C955CD41182DA00508BACF2DF064C79A4@YGC-MAIL> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: text/plain; CHARSET=US-ASCII Precedence: bulk X-Internal-ID: 3FFD0C98000E4A67 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 26 Jan 2004 09:27:08 +0000 From: "Jordan, Tom" Subject: RE: Elekta MLC Sender: owner-linac-eng@plato.aristotle.net To: Linac List X-Internal-ID: 3FFD0C98000E4A67 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f It is 5 years since I last used an Elekta MLC so this doesn't account for recent changes. The reference reflectors were crucial in relating fixed points on the superstructure to calibrate the video image and hence relate the position of the leaf reflectors. Therefore refinding the reference position affects the leaf calibration. In practice, shift of 1-2 pixels in some of the reflectors is not enough to make a really significant change to leaf positions. However as the camera ages, repeated adjustment appears to maintain the overall field size (distance between opposing leaves), but shift the field asymmetricaly relative to the centre. If film measurements show this to be the case a simple adjustment of the leaf bank offset can correct. Tom Jordan > -----Original Message----- > From: Jonathan Chan [SMTP:Sui_Keung.Chan@alumni.cityu.edu.hk] > Sent: 26 January 2004 01:48 > To: Linac List > Subject: Elekta MLC > > Dear list members, > > A simple question about Elekta's MLCs. > The 4 reference reflectors are just for integrity check only? > If, for some reason, the video position of one of the reference reflectors > has > to be re-adjusted slightly (not due to any movement of the optics nor > physical > shift of the reference reflectors), is it necessary to re-do all leaf bank > > calibrations and etc? > > Thanks, > Jonathan Chan  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HS300BIAHE14R@hubbard.azu.nl>; Mon, 26 Jan 2004 12:32:31 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004012612322428147 ; Mon, 26 Jan 2004 12:32:24 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id MAA21124; Mon, 26 Jan 2004 12:33:48 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma021035; Mon, 26 Jan 2004 12:33:19 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id DAA19192 for linac-eng-list; Mon, 26 Jan 2004 03:54:24 -0600 (CST) Received: from mail20.nhs.uk (mail20.nhs.uk [62.6.139.212]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id DAA19188 for ; Mon, 26 Jan 2004 03:54:22 -0600 (CST) Received: from [10.191.254.3] (helo=relayint1.nhs.uk) by mail20.nhs.uk with esmtp (MTC MTA) id 1Al3RH-0005gl-Up for linac-eng@plato.aristotle.net; Mon, 26 Jan 2004 09:53:51 +0000 Received: from relay.nhs.uk (194.62.42.141) by relayint1.nhs.uk (Syntegra-I1 7.0.008) id 3FB9F76600D0CA4D for linac-eng@plato.aristotle.net; Mon, 26 Jan 2004 09:53:51 +0000 Received: from xchange.rsh.nhs.uk (194.227.83.13) by relay.nhs.uk (Syntegra-1 7.0.008) (authenticated as mail_rsh-tr_wmids_nhs_uk@es2002.nhs.uk) id 40113759000ABE77 for linac-eng@plato.aristotle.net; Mon, 26 Jan 2004 09:53:51 +0000 Received: by mail.rsh-tr.wmids.nhs.uk with Internet Mail Service (5.5.2653.19) id ; Mon, 26 Jan 2004 09:52:32 +0000 Date: Mon, 26 Jan 2004 09:52:25 +0000 From: "MacMillan John (RLZ)" Subject: SL75-5 VS3 Sender: owner-linac-eng@plato.aristotle.net To: "'linac-eng@plato.aristotle.net'" Message-id: <72E72DE4ACB3D6118CA500065B3FA7780173A81D@mail.rsh-tr.wmids.nhs.uk> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: text/plain; CHARSET=US-ASCII Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 26 Jan 2004 09:52:25 +0000 From: "MacMillan John (RLZ)" Subject: SL75-5 VS3 Sender: owner-linac-eng@plato.aristotle.net To: "'linac-eng@plato.aristotle.net'" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hi List I have a 9 year old non-networked Elekta SL75-5 with VS3. The VS3 is now playing up - has anyone get a dusty old spare, especially in the UK? TIA John MacMillan Radiotherapy Physics Royal Shrewsbury Hospital, UK  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HS300D4VIRLRF@hubbard.azu.nl>; Mon, 26 Jan 2004 13:02:10 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004012613020820148 ; Mon, 26 Jan 2004 13:02:08 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id NAA27441; Mon, 26 Jan 2004 13:03:32 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma027336; Mon, 26 Jan 2004 13:02:54 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id EAA19713 for linac-eng-list; Mon, 26 Jan 2004 04:20:40 -0600 (CST) Received: from mail4.nhs.uk (mail4.nhs.uk [194.72.23.241]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id EAA19709 for ; Mon, 26 Jan 2004 04:20:38 -0600 (CST) Received: from hn-ext by mail4.nhs.uk (Sendmail 8.8.8) with esmtp id 1Al3qg-0001uH-00; Mon, 26 Jan 2004 10:20:06 +0000 Received: from relay.nhs.uk (194.62.42.144) by relayint1.nhs.uk (Syntegra-I1 7.0.008) id 3FB9F76600D10A75 for linac-eng@plato.aristotle.net; Mon, 26 Jan 2004 10:20:06 +0000 Received: from orion.pldn.scot.nhs.uk (10.250.0.100) by relay.nhs.uk (Syntegra-4 7.0.008) (authenticated as romulus_lhb_scot_nhs_uk@es2002.nhs.uk) id 4011386F000D90F8 for linac-eng@plato.aristotle.net; Mon, 26 Jan 2004 10:20:06 +0000 Received: from isd_nt03.luht.scot.nhs.uk (unverified) by orion.pldn.scot.nhs.uk (Content Technologies SMTPRS 4.3.10) with ESMTP id for ; Mon, 26 Jan 2004 10:21:59 +0000 Received: by ISD_NT03 with Internet Mail Service (5.5.2653.19) id ; Mon, 26 Jan 2004 10:18:25 +0000 Date: Mon, 26 Jan 2004 10:18:20 +0000 From: "Electronics, Oncology" Subject: 600C3 Water flow Sender: owner-linac-eng@plato.aristotle.net To: "Linac Engineers List (E-mail)" Message-id: <17F7A6C89585D4118E23009027E7701802E6E9DA@ISD_NT03> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 26 Jan 2004 10:18:20 +0000 From: "Electronics, Oncology" Subject: 600C3 Water flow Sender: owner-linac-eng@plato.aristotle.net To: "Linac Engineers List (E-mail)" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hi Guys, We have seen the flows on our 600C dropped gradually by about 30 % over the last year. The drop has been universal (all four subsections) throughout the whole system. After cleaning the usual filters and checking flowgauges ( with no improvement we removed the pump to find a lot of crap in the bottom of the tank and round the pump filter basket (the seal round the tank had been disintegrating). We cleaned out tank and pump and refitted but no improvement. We have now replaced the pump (checked 3ph supply) and unfortunately still no success. Some backflushing of the indivdual sections in the gantry at the flow gauges has been done as well. Has anyone experienced a similar problem? Where are restricions likely to occur to drop the machines overall flow ? Any comment would be appreciated. Thanks Alan ********************************************************************** The information contained in this message may be confidential or legally privileged and is intended for the addressee only, If you have received this message in error or there are any problems please notify the originator immediately. The unauthorised use, disclosure, copying or alteration of this message is strictly forbidden. **********************************************************************  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HS300G8MK9MMS@hubbard.azu.nl>; Mon, 26 Jan 2004 13:34:43 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004012613343218182 ; Mon, 26 Jan 2004 13:34:32 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id NAA04708; Mon, 26 Jan 2004 13:35:56 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma004567; Mon, 26 Jan 2004 13:35:15 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id EAA20115 for linac-eng-list; Mon, 26 Jan 2004 04:40:24 -0600 (CST) Received: from mail3.nhs.uk (mail3.nhs.uk [194.72.23.240]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id EAA20111 for ; Mon, 26 Jan 2004 04:40:22 -0600 (CST) Received: from hn-ext by mail3.nhs.uk (Sendmail 8.8.8) with esmtp id 1Al4AG-0001pl-00; Mon, 26 Jan 2004 10:40:20 +0000 Received: from relay.nhs.uk (194.62.42.144) by relayint2.nhs.uk (Syntegra-I2 7.0.008) id 3FB9F97900EF7AA6 for linac-eng@plato.aristotle.net; Mon, 26 Jan 2004 10:40:20 +0000 Received: from orion.pldn.scot.nhs.uk (10.250.0.100) by relay.nhs.uk (Syntegra-4 7.0.008) (authenticated as romulus_lhb_scot_nhs_uk@es2002.nhs.uk) id 4011386F000DF2BF for linac-eng@plato.aristotle.net; Mon, 26 Jan 2004 10:40:20 +0000 Received: from isd_nt03.luht.scot.nhs.uk (unverified) by orion.pldn.scot.nhs.uk (Content Technologies SMTPRS 4.3.10) with ESMTP id for ; Mon, 26 Jan 2004 10:42:31 +0000 Received: by ISD_NT03 with Internet Mail Service (5.5.2653.19) id ; Mon, 26 Jan 2004 10:38:56 +0000 Date: Mon, 26 Jan 2004 10:38:53 +0000 From: "Electronics, Oncology" Subject: 600C3 Water flow Sender: owner-linac-eng@plato.aristotle.net To: "'linac-eng@plato.aristotle.net'" Message-id: <17F7A6C89585D4118E23009027E7701802E6E9DB@ISD_NT03> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 26 Jan 2004 10:38:53 +0000 From: "Electronics, Oncology" Subject: 600C3 Water flow Sender: owner-linac-eng@plato.aristotle.net To: "'linac-eng@plato.aristotle.net'" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hi Guys, Hi Guys We have seen the flows on our 600C dropped gradually by about 30 % over the last year. The drop has been universal (all four subsections) throughout the whole system. After cleaning the usual filters and checking flowgauges ( with no improvement we removed the pump to find a lot of crap in the bottom of the tank and round the pump filter basket (the seal round the tank had been disintegrating). We cleaned out tank and pump and refitted but no improvement. We have now replaced the pump (checked 3ph supply) and unfortunately still no success. Some backflushing of the indivdual sections in the gantry at the flow gauges has been done as well. Has anyone experienced a similar problem? Where are restricions likely to occur to drop the machines overall flow ? Any comment would be appreciated. Thanks Alan ********************************************************************** The information contained in this message may be confidential or legally privileged and is intended for the addressee only, If you have received this message in error or there are any problems please notify the originator immediately. The unauthorised use, disclosure, copying or alteration of this message is strictly forbidden. **********************************************************************  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HS300K93MD1RP@hubbard.azu.nl>; Mon, 26 Jan 2004 14:19:55 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004012614194824322 ; Mon, 26 Jan 2004 14:19:48 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id OAA15260; Mon, 26 Jan 2004 14:21:11 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma015129; Mon, 26 Jan 2004 14:20:43 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id FAA21334 for linac-eng-list; Mon, 26 Jan 2004 05:41:58 -0600 (CST) Received: from mail21.nhs.uk (mail21.nhs.uk [62.6.139.215]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id FAA21330 for ; Mon, 26 Jan 2004 05:41:56 -0600 (CST) Received: from [10.191.254.3] (helo=relayint2.nhs.uk) by mail21.nhs.uk with esmtp (MTC MTA) id 1Al57N-0004qg-IU for linac-eng@plato.aristotle.net; Mon, 26 Jan 2004 11:41:25 +0000 Received: from relay.nhs.uk (194.62.42.143) by relayint2.nhs.uk (Syntegra-I2 7.0.008) id 3FB9F97900F036C4 for linac-eng@plato.aristotle.net; Mon, 26 Jan 2004 11:41:25 +0000 Received: from mercury.University-b.wmids.nhs.uk (193.240.116.176) by relay.nhs.uk (Syntegra-3 7.0.008) (authenticated as smtp_uhb_nhs_uk@es2002.nhs.uk) id 401138120002A209; Mon, 26 Jan 2004 11:41:25 +0000 Received: by MERCURY with Internet Mail Service (5.5.2653.19) id ; Mon, 26 Jan 2004 11:41:17 +0000 Date: Mon, 26 Jan 2004 11:38:33 +0000 From: Graham Chalmers Subject: RE: Elekta Dose Rate Tuning Sender: owner-linac-eng@plato.aristotle.net To: 'Jonathan Chan' , Linac List Message-id: <71A7A8BA33E3D511AF5E00034797029B1053534B@HERMES> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_Q0Wc9qBdcK5I6UKi9Ze57Q)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 26 Jan 2004 11:38:33 +0000 From: Graham Chalmers Subject: RE: Elekta Dose Rate Tuning Sender: owner-linac-eng@plato.aristotle.net To: 'Jonathan Chan' , Linac List X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_Q0Wc9qBdcK5I6UKi9Ze57Q) Content-type: text/plain; CHARSET=US-ASCII Dear Jonathan As you have found, the profile will be sensitive to changes in energy caused by changes in beam current. My understanding is that you should be able to obtain maximum dose rate with all systems optimised i.e. the gun current set to give a maximum dose rate and the AFC peaked also. If the beam current is too high/low the dose rate will drop. Likewise if the AFC is tuned either side of a peak the same should occur. Depending on the machine you may find more than a single peak at slightly different dose rates esp. on a machine with feedback/high power phase shifter - are you tuned to the correct peak or is a slight change in high power phase position required to improve the peak? One other possibility is to confirm that you have the correct power i.e. you require the correct beam current, frequency and power for the correct beam profile. Changes to Chargerate will alter power and hence the gun current etc.. Best wishes Graham Chalmers Head of QC and Dosimetry - QEH Birmingham UK -----Original Message----- From: Jonathan Chan [mailto:Sui_Keung.Chan@alumni.cityu.edu.hk] Sent: 26 January 2004 01:58 To: Linac List Subject: Elekta Dose Rate Tuning Dear list members, Another question about the Elekta's machine tuning. I could see the horn changing (beam profiles) when I changed the gun current. Quite sensitive. But this is the way (or is there any other way?) to restore the nominal dose rate for photon energies, with the AFC optimized already. Any comment? Jonathan Chan DISCLAIMER: This e-mail contains proprietary information some or all of which may be confidential or legally privileged. It is for the exclusive use of the intended recipient(s) only. If an addressing or transmission error has misdirected this e-mail and you are not the intended recipient(s), please notify the author by replying to this e-mail. If you are not the intended recipient you must not use, disclose, distribute, copy, print, or rely on this e-mail, as this may be unlawful. --Boundary_(ID_Q0Wc9qBdcK5I6UKi9Ze57Q) Content-type: text/html Content-transfer-encoding: quoted-printable RE: Elekta Dose Rate Tuning

Dear Jonathan

As you have found, the profile will be sensitive to = changes in energy caused by changes in beam current.

My understanding is that you should be able to obtain = maximum dose rate with all systems optimised i.e. the gun current set = to give a maximum dose rate and the AFC peaked also.

If the beam current is too high/low the dose rate = will drop. Likewise if the AFC is tuned either side of a peak the same = should occur.

Depending on the machine you may find more than a = single peak at slightly different dose rates esp. on a machine with = feedback/high power phase shifter - are you tuned to the correct peak = or is a slight change in high power phase position required to improve = the peak?

One other possibility is to confirm that you have the = correct power i.e. you require the correct beam current, frequency and = power for the correct beam profile. Changes to Chargerate will alter = power and hence the gun current etc..

Best wishes

Graham Chalmers

Head of QC and Dosimetry - QEH Birmingham UK



-----Original Message-----
From: Jonathan Chan [mailto:Sui_Keung.Chan= @alumni.cityu.edu.hk]
Sent: 26 January 2004 01:58
To: Linac List
Subject: Elekta Dose Rate Tuning

Dear list members,

Another question about the Elekta's machine = tuning.
I could see the horn changing (beam profiles) when I = changed the gun current. 
Quite sensitive.  But this is the way (or is = there any other way?) to restore
the nominal dose rate for photon energies, with the = AFC optimized already.
Any comment?

Jonathan Chan
DISCLAIMER: This e-mail contains proprietary = information some or all of which may be confidential or legally = privileged. It is for the exclusive use of the intended recipient(s) = only. If an addressing or transmission error has misdirected this = e-mail and you are not the intended recipient(s), please notify the = author by replying to this e-mail. If you are not the intended = recipient you must not use, disclose, distribute, copy, print, or rely = on this e-mail, as this may be unlawful.

--Boundary_(ID_Q0Wc9qBdcK5I6UKi9Ze57Q)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HS3000QHNDMLU@hubbard.azu.nl>; Mon, 26 Jan 2004 14:41:53 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004012614414513764 ; Mon, 26 Jan 2004 14:41:45 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id OAA20624; Mon, 26 Jan 2004 14:43:09 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma020305; Mon, 26 Jan 2004 14:41:58 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id GAA21800 for linac-eng-list; Mon, 26 Jan 2004 06:10:27 -0600 (CST) Received: from mail23.nhs.uk (mail23.nhs.uk [62.6.139.221]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id GAA21796 for ; Mon, 26 Jan 2004 06:10:25 -0600 (CST) Received: from [10.191.254.3] (helo=relayint1.nhs.uk) by mail23.nhs.uk with esmtp (MTC MTA) id 1Al5Yw-00050r-PR for linac-eng@plato.aristotle.net; Mon, 26 Jan 2004 12:09:54 +0000 Received: from relay.nhs.uk (194.62.42.142) by relayint1.nhs.uk (Syntegra-I1 7.0.008) id 3FB9F76600D1E0CB for linac-eng@plato.aristotle.net; Mon, 26 Jan 2004 12:09:54 +0000 Received: from smtp.leedsth.nhs.uk (163.160.107.2) by relay.nhs.uk (Syntegra-2 7.0.008) (authenticated as smtp_leedsth_nhs_uk@es2002.nhs.uk) id 401137B60003A349 for linac-eng@plato.aristotle.net; Mon, 26 Jan 2004 12:09:54 +0000 Received: from LTH-MTA by smtp.leedsth.nhs.uk with Novell_GroupWise; Mon, 26 Jan 2004 12:10:44 +0000 Date: Mon, 26 Jan 2004 12:10:35 +0000 From: Steve Watkins Subject: Re: Elekta Dose Rate Tuning Sender: owner-linac-eng@plato.aristotle.net To: " Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.0.2 Content-type: text/plain; charset=US-ASCII Content-disposition: inline Content-transfer-encoding: 8bit Precedence: bulk X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id GAA21797 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 26 Jan 2004 12:10:35 +0000 From: Steve Watkins Subject: Re: Elekta Dose Rate Tuning Sender: owner-linac-eng@plato.aristotle.net To: " Content-disposition: inline X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id GAA21797 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hi Jonathan beam energy will change ie beam profile when gun current is changed in photon mode.ie Gun current up..energy down and visa versa.To peak doserate its best to go through gun servo setup then check afc is peaked.When gun servo is set up right doserate should be peaked at right energy.You cant use gun current as a tool to increase doserate as such in photon mode..if you up current beam is loaded then energy is down. If after checking gun servo and afc doserate is still down depending whether doserate is down on one or all energies things that could be wrong are power settings,ion chamber fault affecting gun servo or prf settings. Gun can be used in electron mode to increase doserate because beam is not loaded to max. Steve watkins uk >>> Jonathan Chan 01/26/04 01:57am >>> Dear list members, Another question about the Elekta's machine tuning. I could see the horn changing (beam profiles) when I changed the gun current. Quite sensitive. But this is the way (or is there any other way?) to restore the nominal dose rate for photon energies, with the AFC optimized already. Any comment? Jonathan Chan  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HS400GMF1LA21@hubbard.azu.nl>; Mon, 26 Jan 2004 19:48:48 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004012619484128063 ; Mon, 26 Jan 2004 19:48:41 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA14822; Mon, 26 Jan 2004 19:50:05 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma014807; Mon, 26 Jan 2004 19:49:57 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id KAA25798 for linac-eng-list; Mon, 26 Jan 2004 10:21:04 -0600 (CST) Received: from titan.lhsc.on.ca (titan.lhsc.on.ca [142.158.2.20]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id KAA25790 for ; Mon, 26 Jan 2004 10:21:02 -0600 (CST) Received: from mail.lrcc.on.ca (mail.lrcc.on.ca [142.158.120.242]) by titan.lhsc.on.ca (8.11.7p1+Sun/8.11.7) with SMTP id i0QGKVr16748 for ; Mon, 26 Jan 2004 11:20:31 -0500 (EST) Received: by mail.lrcc.on.ca(Lotus SMTP MTA v4.6.7 (934.1 12-30-1999)) id 85256E27.0059C30A ; Mon, 26 Jan 2004 11:20:26 -0500 Date: Mon, 26 Jan 2004 11:20:23 -0500 From: Randy.McVittie@lrcc.on.ca Subject: LCD monitors in a Treatment Room Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <85256E27.0059C234.00@mail.lrcc.on.ca> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Content-disposition: inline Precedence: bulk X-Lotus-FromDomain: LRCC X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 26 Jan 2004 11:20:23 -0500 From: Randy.McVittie@lrcc.on.ca Subject: LCD monitors in a Treatment Room Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Content-disposition: inline X-Lotus-FromDomain: LRCC X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Has anyone used LCD monitors instead of CRT monitors inside the treatment rooms? If so, have they suffered any damage from the radiation. We are setting up 2 rooms here at London, and 19" LCD's are a lot less expensive now than they were 2 years ago when we were specifying equipment for these rooms. The linacs are going to be 6/18 Varian 2100 EX's, so there will be neutron production, and I think that neutrons cause more damage to electronics than anything else. Is that right? Randy McVittie London Regional Cancer Centre London, Ontario Canada  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HS400AASKE6C7@hubbard.azu.nl>; Tue, 27 Jan 2004 02:34:56 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004012702344912399 ; Tue, 27 Jan 2004 02:34:49 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id CAA25997; Tue, 27 Jan 2004 02:36:13 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma025978; Tue, 27 Jan 2004 02:35:46 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id RAA05521 for linac-eng-list; Mon, 26 Jan 2004 17:09:30 -0600 (CST) Received: from samc37.samc.com (mail.samc.com [66.209.156.4]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id RAA05517 for ; Mon, 26 Jan 2004 17:09:28 -0600 (CST) Received: through eSafe SMTP Relay 1075132481; Mon Jan 26 15:08:58 2004 Received: from SAMC-MTA by samc37.samc.com with Novell_GroupWise; Mon, 26 Jan 2004 15:08:55 -0800 Date: Mon, 26 Jan 2004 15:08:50 -0800 From: Mark Haymond Subject: Re: LCD monitors in a Treatment Room Sender: owner-linac-eng@plato.aristotle.net To: Randy.McVittie@lrcc.on.ca, linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.5.1 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_HZ1fmiWBETm8c3eCbk6qDw)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 26 Jan 2004 15:08:50 -0800 From: Mark Haymond Subject: Re: LCD monitors in a Treatment Room Sender: owner-linac-eng@plato.aristotle.net To: Randy.McVittie@lrcc.on.ca, linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f --Boundary_(ID_HZ1fmiWBETm8c3eCbk6qDw) Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7bit Randy, We have LCD monitors runnng without problems in three treatment rooms. They are mounted on the wall close to the foot of the couch. We have a 2300CD, 21EX and a 600C. Radiation Equipment Specialist Bio-Med Engineering Saint Agnes Medical Center ************************************************************************************************** The contents of this email and any attachments are confidential. It is intended for the named recipient(s) only. If you have received this email in error please notify the system manager or the sender immediately and do not disclose the contents to anyone or make copies. ************************************************************************************************** --Boundary_(ID_HZ1fmiWBETm8c3eCbk6qDw) Content-type: text/html; charset=ISO-8859-1 Content-description: HTML Content-transfer-encoding: 8bit
Randy,
We have LCD monitors runnng without problems in three treatment rooms. They are mounted on the wall close to the foot of the couch. We have a 2300CD, 21EX and a 600C.
 
 
 
Radiation Equipment Specialist
Bio-Med Engineering
Saint Agnes Medical Center
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--Boundary_(ID_HZ1fmiWBETm8c3eCbk6qDw)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HS600BNRA0I2C@hubbard.azu.nl>; Wed, 28 Jan 2004 00:45:56 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004012800455421823 ; Wed, 28 Jan 2004 00:45:54 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id AAA10615; Wed, 28 Jan 2004 00:47:18 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma010578; Wed, 28 Jan 2004 00:47:06 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id OAA23408 for linac-eng-list; Tue, 27 Jan 2004 14:49:48 -0600 (CST) Received: from imo-m03.mx.aol.com (imo-m03.mx.aol.com [64.12.136.6]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id OAA23404 for ; Tue, 27 Jan 2004 14:49:47 -0600 (CST) Received: from RSAINC1@aol.com by imo-m03.mx.aol.com (mail_out_v36_r4.12.) id y.83.3f5b155 (16335) for ; Tue, 27 Jan 2004 15:48:02 -0500 (EST) Date: Tue, 27 Jan 2004 15:48:01 -0500 (EST) From: RSAINC1@aol.com Subject: Varian Mk series MLC Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <83.3f5b155.2d482881@aol.com> MIME-version: 1.0 X-Mailer: 9.0 for Windows sub 5100 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_IKupUUB05G7hDXjshI8ZAw)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 27 Jan 2004 15:48:01 -0500 (EST) From: RSAINC1@aol.com Subject: Varian Mk series MLC Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f --Boundary_(ID_IKupUUB05G7hDXjshI8ZAw) Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7bit Just wondering if anyone knows a second source for Mark series mlc Ball screw and actuator; part number 01101190-01? Thanks, Roger --Boundary_(ID_IKupUUB05G7hDXjshI8ZAw) Content-type: text/html; charset=US-ASCII Content-transfer-encoding: quoted-printable
Just wondering if anyone knows a second source for Mark series mlc = ;Ball screw and actuator;  part number 01101190-01? 
Thanks,
Roger
--Boundary_(ID_IKupUUB05G7hDXjshI8ZAw)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HS600D85BVF2Y@hubbard.azu.nl>; Wed, 28 Jan 2004 01:26:04 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004012801260229916 ; Wed, 28 Jan 2004 01:26:02 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id BAA15111; Wed, 28 Jan 2004 01:27:27 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma015081; Wed, 28 Jan 2004 01:27:22 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id PAA24259 for linac-eng-list; Tue, 27 Jan 2004 15:27:52 -0600 (CST) Received: from dalwhinnie.chhlth.govt.nz ([203.163.70.2]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id PAA24255 for ; Tue, 27 Jan 2004 15:27:49 -0600 (CST) Received: from mailsweeper2.chhlth.govt.nz (mailsweeper2.chhlth.govt.nz [159.117.18.162]) by dalwhinnie.chhlth.govt.nz (8.12.8/8.12.5) with ESMTP id i0RLTQfU000451 for ; Wed, 28 Jan 2004 10:29:27 +1300 Received: from SMTPGATE.CHHLTH.GOVT.NZ (unverified) by mailsweeper2.chhlth.govt.nz (Content Technologies SMTPRS 4.3.1) with ESMTP id for ; Wed, 28 Jan 2004 10:26:25 +1300 Received: from CHCH2-MTA by SMTPGATE.CHHLTH.GOVT.NZ with Novell_GroupWise; Wed, 28 Jan 2004 10:27:15 +1300 Date: Wed, 28 Jan 2004 10:27:05 +1300 From: Dave Pinchin Subject: Varian C series side panels Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.0.4 Content-type: text/plain; charset=us-ascii Content-disposition: inline Content-transfer-encoding: 8bit Precedence: bulk X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id PAA24256 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 28 Jan 2004 10:27:05 +1300 From: Dave Pinchin Subject: Varian C series side panels Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Content-disposition: inline X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id PAA24256 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f G'day list, Here's a real curly one....... We have a couch (PSA) electronic side panel (ESP) that is intermittently bringing up a fault on power on self test (POST). I hope the unit is not (NBG). The indications are 'panel off' LED flashing about 1 per sec. NO OTHER LEDs lit at all. This fault is not listed in the book I have. Has any body seen anything like this before???? Dave ********************************************************************** ** This email and attachments have been scanned for content and viruses and is believed to be clean ** This email or attachments may contain confidential or legally privileged information intended for the sole use of the addressee(s). Any use, redistribution, disclosure, or reproduction of this message, except as intended, is prohibited. If you received this email in error, please notify the sender and remove all copies of the message, including any attachments. Any views or opinions expressed in this email (unless otherwise stated) may not represent those of Canterbury District Health Board **********************************************************************  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HS700E68F2PKE@hubbard.azu.nl> for jkok@sims-ms-daemon; Wed, 28 Jan 2004 15:32:51 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004012815324723545 for ; Wed, 28 Jan 2004 15:32:47 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id PAA09222 for ; Wed, 28 Jan 2004 15:34:12 +0100 (MET) Received: from caviar.isi.uu.nl(131.211.144.138) by armstrong.azu.nl via smap (V1.3) id xma008997; Wed, 28 Jan 2004 15:33:15 +0100 Received: from chouffe.radth.ruu.nl (chouffe.radth.ruu.nl [131.211.145.4]) by caviar.isi.uu.nl (Postfix) with ESMTP id 43C73111310 for ; Wed, 28 Jan 2004 15:30:55 +0100 (MET) Received: from (caviar.isi.uu.nl) [131.211.144.138] by chouffe.radth.ruu.nl with esmtp (Exim 3.35 #1 (Debian)) id 1AlrJF-0001iy-00; Wed, 28 Jan 2004 16:08:53 +0100 Received: from smtp5.wanadoo.nl (smtp5.wanadoo.nl [194.134.35.176]) by caviar.isi.uu.nl (Postfix) with ESMTP id 76DFF111310 for ; Wed, 28 Jan 2004 15:30:54 +0100 (MET) Received: from laptop (rot2-p2822.dial.wanadoo.nl [62.234.206.6]) by smtp5.wanadoo.nl (Postfix) with ESMTP id 0A59B7848D; Wed, 28 Jan 2004 15:31:43 +0100 (CET) Date: Wed, 28 Jan 2004 15:31:29 +0100 From: Thierry de Vlieg Subject: FW: Vakantie To: "Egbert van Drie (hccnet)" , Jan Kok , 'Marcel Wels' <2372@verbindingskip.nl>, Pieter de Gier , Theo Timmer Message-id: <20040128143143.0A59B7848D@smtp5.wanadoo.nl> MIME-version: 1.0 X-Mailer: Microsoft Office Outlook, Build 11.0.5510 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_LZxZe8oD/Wij2grSx/iwig)" Thread-Index: AcPljXKX/a1TJAIhTeinTLDJl8YonwAHdQgg X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 *** EOOH *** Date: Wed, 28 Jan 2004 15:31:29 +0100 From: Thierry de Vlieg Subject: FW: Vakantie To: "Egbert van Drie (hccnet)" , Jan Kok , 'Marcel Wels' <2372@verbindingskip.nl>, Pieter de Gier , Theo Timmer Thread-Index: AcPljXKX/a1TJAIhTeinTLDJl8YonwAHdQgg X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 This is a multi-part message in MIME format. --Boundary_(ID_LZxZe8oD/Wij2grSx/iwig) Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 7bit Ter info! _____ Van: Brink, Arvid van den [mailto:Arvid.vandenBrink@getronics.com] Verzonden: woensdag 28 januari 2004 11:57 Aan: Thierry de Vlieg Onderwerp: Vakantie 11-3-2004 t/m 2-4-2004 op vakantie naar Thailand Greetz, _________________________________ Arvid B. van den Brink Senior Project Engineer Desktop & System Migration Getronics Infrastructure Solutions Wiltonstraat 41, 3905 KW, Veenendaal P.O. Box 1005, 3900 BA, Veenendaal The Netherlands Phone: +31 (0)318 567 211 Fax: +31 (0)318 567 633 Mobile: +31 (0)621 580 092 E-Mail: arvid.vandenbrink@getronics.com www.getronics.com The information transmitted is intended only for use by the addressee and may contain confidential and/or privileged material. Any review, re-transmission, dissemination or other use of it, or the taking of any action in reliance upon this information by persons and/or entities other than the intended recipient is prohibited. If you received this in error, please inform the sender and/or addressee immediately and delete the material. Thank you. --Boundary_(ID_LZxZe8oD/Wij2grSx/iwig) Content-type: text/html; charset=us-ascii Content-transfer-encoding: quoted-printable Vakantie

Ter = info!

 

Van: = Brink, Arvid van den [mailto:Arvid.vandenBrink@getronics.com]
Verzonden: woensdag 28 = januari 2004 11:57
Aan: Thierry de Vlieg
Onderwerp: = Vakantie

 

11-3-2004 t/m 2-4-2004 op vakantie naar Thailand

Greetz,

__________________= _______________

A= rvid B. van den Brink
Senior Project Engineer
Desktop & System = Migration

Getronics = Infrastructure Solutions
Wiltonstraat 41, 3905 KW, = Veenendaal

P.O. Box 1005, 3900 BA, Veenendaal
The Netherlands

Phone: +31 (0)318 567 = 211

Fax: +31 (0)318 567 = 633

Mobile: +31 (0)621 580 = 092

E-Mail: = arvid.vandenbrink@getronics.c= om

www.getronics.com

The information transmitted is intended only for use by the addressee and may contain confidential and/or privileged material. Any review, re-transmission, dissemination or other use of it, or the taking of any action in = reliance upon this information by persons and/or entities other than the intended = recipient is prohibited. If you received this in error, please inform the sender = and/or addressee immediately and delete the material. Thank = you.

--Boundary_(ID_LZxZe8oD/Wij2grSx/iwig)--  1,, X-Coding-System: undecided-unix Return-path: Disposition-notification-to: "R. Brekelmans" Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HS700ELNFC5KE@hubbard.azu.nl>; Wed, 28 Jan 2004 15:38:35 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004012815382824956 ; Wed, 28 Jan 2004 15:38:28 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id PAA10751; Wed, 28 Jan 2004 15:39:53 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma010478; Wed, 28 Jan 2004 15:38:51 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id GAA09724 for linac-eng-list; Wed, 28 Jan 2004 06:30:17 -0600 (CST) Received: from maildiv.div.nl (IDENT:root@[62.166.145.218]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id GAA09720 for ; Wed, 28 Jan 2004 06:30:15 -0600 (CST) Received: from mail.bvi.nl (mail.bvi.nl [192.9.200.120]) by maildiv.div.nl (8.11.6/8.11.0) with ESMTP id i0SCUDO07422 for ; Wed, 28 Jan 2004 13:30:13 +0100 Received: from PC2803 ([192.9.200.61]) by mail.bvi.nl (8.8.5/8.8.5) with SMTP id NAA19698 for ; Wed, 28 Jan 2004 13:31:45 +0100 Date: Wed, 28 Jan 2004 13:38:06 +0100 From: "R. Brekelmans" Subject: Primus slave-board connectors Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <001901c3e59b$94a48f50$3dc809c0@PC2803> MIME-version: 1.0 X-Mailer: Microsoft Outlook Express 5.50.4133.2400 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_p3CohjZ+MtTofx/q/mshdA)" Precedence: bulk X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4133.2400 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 *** EOOH *** Disposition-notification-to: "R. Brekelmans" Date: Wed, 28 Jan 2004 13:38:06 +0100 From: "R. Brekelmans" Subject: Primus slave-board connectors Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4133.2400 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 Dit is een meerdelig bericht in MIME-indeling. --Boundary_(ID_p3CohjZ+MtTofx/q/mshdA) Content-type: text/plain; charset=Windows-1252 Content-transfer-encoding: quoted-printable Hello List, Would anyone know of a source or manufacturer for the wire-to-board = connectors(black ones with the red clip)=20 used on the Siemens Digital's function controllers? With regards, Richard -------------------------------------------------- Dhr. R. Brekelmans Linear Accelerator Service Engineer Dr. B. Verbeeten Instituut Holland -------------------------------------------------- --Boundary_(ID_p3CohjZ+MtTofx/q/mshdA) Content-type: text/html; charset=Windows-1252 Content-transfer-encoding: quoted-printable
Hello List,

Would anyone know of = a source or=20 manufacturer for the wire-to-board connectors(black ones with the red = clip)=20
used on the Siemens Digital's function=20 controllers?

With regards,
 
Richard
 
--------------------------------------------------
Dhr. R.=20 Brekelmans
Linear Accelerator Service Engineer
Dr. B. Verbeeten=20 Instituut
Holland
--------------------------------------------------
 

 
--Boundary_(ID_p3CohjZ+MtTofx/q/mshdA)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HS700FEBFU8LM@hubbard.azu.nl>; Wed, 28 Jan 2004 15:49:21 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004012815492009389 ; Wed, 28 Jan 2004 15:49:20 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id PAA13853; Wed, 28 Jan 2004 15:50:44 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma013394; Wed, 28 Jan 2004 15:49:20 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id GAA09849 for linac-eng-list; Wed, 28 Jan 2004 06:44:12 -0600 (CST) Received: from imsmq11.netvigator.com (imsmq11-3.netvigator.com [218.102.33.56]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id GAA09845 for ; Wed, 28 Jan 2004 06:44:10 -0600 (CST) Received: (qmail 23022 invoked from network); Wed, 28 Jan 2004 12:43:54 +0000 Received: from n219077023216.netvigator.com (HELO kimyeung) (219.77.23.216) by imsmq11.netvigator.com with SMTP; Wed, 28 Jan 2004 12:43:54 +0000 Date: Wed, 28 Jan 2004 20:32:50 +0800 From: Kim Yeung Subject: Re: DMLC QA Sender: owner-linac-eng@plato.aristotle.net To: Linac Message-id: <000e01c3e59a$d816c100$0202a8c0@kimyeung> MIME-version: 1.0 X-Mailer: Microsoft Outlook Express 6.00.2800.1158 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_sBalAHH1Ib7bys8lNAbzsA)" Precedence: bulk X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 *** EOOH *** Date: Wed, 28 Jan 2004 20:32:50 +0800 From: Kim Yeung Subject: Re: DMLC QA Sender: owner-linac-eng@plato.aristotle.net To: Linac X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 This is a multi-part message in MIME format. --Boundary_(ID_sBalAHH1Ib7bys8lNAbzsA) Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: quoted-printable Hi Colleagues, Varian Mark series MLC Could anyone advise if you have some special QA /maintenance = procedures for DMLC, i.e. IMRT? Thanks in advance. Kim Yeung --Boundary_(ID_sBalAHH1Ib7bys8lNAbzsA) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: quoted-printable
Hi Colleagues,
 
        Varian=20 Mark series MLC
 
Could anyone advise if you have some=20 special  QA /maintenance  procedures for DMLC, i.e.=20 IMRT?
 
Thanks in advance.
 
Kim Yeung
--Boundary_(ID_sBalAHH1Ib7bys8lNAbzsA)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HS700KL8J4ACK@hubbard.azu.nl>; Wed, 28 Jan 2004 17:00:14 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004012817000915379 ; Wed, 28 Jan 2004 17:00:09 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id RAA03036; Wed, 28 Jan 2004 17:01:34 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma002852; Wed, 28 Jan 2004 17:00:42 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id HAA11004 for linac-eng-list; Wed, 28 Jan 2004 07:49:18 -0600 (CST) Received: from whsnt76.wmdomain1.wellmont.org ([151.102.97.118]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id HAA11000 for ; Wed, 28 Jan 2004 07:49:17 -0600 (CST) Date: Wed, 28 Jan 2004 08:48:05 -0500 From: "Falcinelli, Marc A" Subject: Impac and Varian Millennium MLC Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_f/uTB9OsR/P23wqZ3dn34Q)" Precedence: bulk X-MimeOLE: Produced By Microsoft Exchange V6.0.6375.0 Content-Class: urn:content-classes:message Thread-Topic: Impac and Varian Millennium MLC Thread-Index: AcPlpVqaD++0VCGoSUGOElx0dN07Ow== X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 28 Jan 2004 08:48:05 -0500 From: "Falcinelli, Marc A" Subject: Impac and Varian Millennium MLC Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-MimeOLE: Produced By Microsoft Exchange V6.0.6375.0 Content-Class: urn:content-classes:message Thread-Topic: Impac and Varian Millennium MLC Thread-Index: AcPlpVqaD++0VCGoSUGOElx0dN07Ow== X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This is a multi-part message in MIME format. --Boundary_(ID_f/uTB9OsR/P23wqZ3dn34Q) Content-type: text/plain; charset=us-ascii Content-transfer-encoding: quoted-printable Hello to all, I am interested in receiving feedback from you who have Varian equipment interfaced with Impac. Specifically, I am interested in how a C-series Clinac with a 120 leaf Millennium MLC interfaces with the Impac system. I recall that years ago there were glitches between Impac and the older Varian Mark series MLCs. Have these problems continued? Does the Millennium series MLC operate efficiently without any stalls or lockups? Any overall performance feedback is greatly appreciated. Thank you, Marc --Boundary_(ID_f/uTB9OsR/P23wqZ3dn34Q) Content-type: text/html; charset=us-ascii Content-transfer-encoding: quoted-printable Impac and Varian Millennium MLC

Hello = to all,

 I am interested in receiving feedback from you who = have Varian equipment interfaced with Impac. Specifically, I am = interested in how a C-series Clinac with a 120 leaf Millennium = MLC interfaces with the Impac = system. = I recall that years ago there were = glitches between Impac and the older Varian Mark series MLCs. Have these = problems continued? Does = the Millennium series MLC operate efficiently without any stalls or = lockups? = Any overall performance feedback is = greatly appreciated.

Thank = you,

Marc

--Boundary_(ID_f/uTB9OsR/P23wqZ3dn34Q)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HS70006KLTAN1@hubbard.azu.nl>; Wed, 28 Jan 2004 17:58:24 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004012817582102103 ; Wed, 28 Jan 2004 17:58:21 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id RAA15419; Wed, 28 Jan 2004 17:59:46 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma015266; Wed, 28 Jan 2004 17:59:19 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id IAA11877 for linac-eng-list; Wed, 28 Jan 2004 08:29:48 -0600 (CST) Received: from hotmail.com (sea1-f26.sea1.hotmail.com [207.68.163.26]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id IAA11871 for ; Wed, 28 Jan 2004 08:29:46 -0600 (CST) Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Wed, 28 Jan 2004 06:29:16 -0800 Received: from 159.178.80.35 by sea1fd.sea1.hotmail.msn.com with HTTP; Wed, 28 Jan 2004 14:29:15 +0000 (GMT) Date: Wed, 28 Jan 2004 14:29:15 +0000 From: David Price Subject: Position available North Fla Sender: owner-linac-eng@plato.aristotle.net X-Sender: roast_em@hotmail.com To: linac-eng@plato.aristotle.net Cc: Ritz@shands.ufl.edu Message-id: MIME-version: 1.0 Content-type: text/plain; CHARSET=US-ASCII; format=flowed Precedence: bulk X-Originating-IP: [159.178.80.35] X-Originating-Email: [roast_em@hotmail.com] X-OriginalArrivalTime: 28 Jan 2004 14:29:16.0133 (UTC) FILETIME=[1B939150:01C3E5AB] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 28 Jan 2004 14:29:15 +0000 From: David Price Subject: Position available North Fla Sender: owner-linac-eng@plato.aristotle.net X-Sender: roast_em@hotmail.com To: linac-eng@plato.aristotle.net Cc: Ritz@shands.ufl.edu X-Originating-IP: [159.178.80.35] X-Originating-Email: [roast_em@hotmail.com] X-OriginalArrivalTime: 28 Jan 2004 14:29:16.0133 (UTC) FILETIME=[1B939150:01C3E5AB] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Company: Shands HealthCare Location: US-FL-Gainesville Status: Full Time, Employee F/T evening position (3PM-11PM) available at Shands Hospital, at the University of Florida located in North Central FL. This position is responsible for maintaining 5 highly sophisticated microwave linear accelerators. Responsibilities also include maintaining the department's cobalt unit, 3 radiographic simulators and a 250 Kv orthovaltage unit. Other duties include providing mechanical and electrical support for other department. Qualifications include BS degree in Electrical Engineering or other appropriate area of specialization, or lesser formal education with appropriate yrs of directly related exp. If a graduate from an accredited college with a BS degree in an related area of specialization, 2 yrs exp in repair and installation of computer-controlled equipment or medical linear accelerators. Work exp may be substituted for up to 2 yrs of formal education on a ratio of 2 yrs exp to 1 yr of education. Strong background is req in math & science, digital & analog electronics, microprocessor control systems, mechanical aptitude, ability to draw & design mechanical & electronic support equipment to be fused in operation, maintenance & repair of radiation therapy equipment. Competitive salary & benefits offered. Call today @ 1.800.325.0367 ext. 8.5401 Gloria Parker, Human Resources, apply on-line @ www.shands.org _________________________________________________________________ Get reliable dial-up Internet access now with our limited-time introductory offer. http://join.msn.com/?page=dept/dialup _________________________________________________________________ Let the new MSN Premium Internet Software make the most of your high-speed experience. http://join.msn.com/?pgmarket=en-us&page=byoa/prem&ST=1  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HS700C27XQIKT@hubbard.azu.nl>; Wed, 28 Jan 2004 22:15:57 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004012822155312744 ; Wed, 28 Jan 2004 22:15:53 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id WAA25507; Wed, 28 Jan 2004 22:17:18 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma025312; Wed, 28 Jan 2004 22:16:26 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id MAA17524 for linac-eng-list; Wed, 28 Jan 2004 12:25:13 -0600 (CST) Received: from web40705.mail.yahoo.com (web40705.mail.yahoo.com [66.218.78.162]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id MAA17520 for ; Wed, 28 Jan 2004 12:25:11 -0600 (CST) Received: from [163.246.197.21] by web40705.mail.yahoo.com via HTTP; Wed, 28 Jan 2004 10:24:40 -0800 (PST) Date: Wed, 28 Jan 2004 10:24:40 -0800 (PST) From: Russ Olsen Subject: salary survey Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <20040128182440.341.qmail@web40705.mail.yahoo.com> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 28 Jan 2004 10:24:40 -0800 (PST) From: Russ Olsen Subject: salary survey Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hello all: I know this subject comes up fairly often here, but is there a salary survey available for Radiotherapy Service Engineers? Thank you, Russell Olsen MCSE Systems Engineer Emory University School of Medicine Department of Radiation Oncology Atlanta, GA __________________________________ Do you Yahoo!? Yahoo! SiteBuilder - Free web site building tool. Try it! http://webhosting.yahoo.com/ps/sb/  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HS800FHB2D9U1@hubbard.azu.nl>; Wed, 28 Jan 2004 23:56:00 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004012823555517673 ; Wed, 28 Jan 2004 23:55:55 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id XAA10058; Wed, 28 Jan 2004 23:57:21 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma010007; Wed, 28 Jan 2004 23:57:03 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id OAA19912 for linac-eng-list; Wed, 28 Jan 2004 14:16:49 -0600 (CST) Received: from titan.lhsc.on.ca (titan.lhsc.on.ca [142.158.2.20]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id OAA19908 for ; Wed, 28 Jan 2004 14:16:47 -0600 (CST) Received: from mail.lrcc.on.ca (mail.lrcc.on.ca [142.158.120.242]) by titan.lhsc.on.ca (8.11.7p1+Sun/8.11.7) with SMTP id i0SKFYD06311; Wed, 28 Jan 2004 15:15:34 -0500 (EST) Received: by mail.lrcc.on.ca(Lotus SMTP MTA v4.6.7 (934.1 12-30-1999)) id 85256E29.006F070E ; Wed, 28 Jan 2004 15:12:43 -0500 Date: Wed, 28 Jan 2004 15:12:39 -0500 From: Randy.McVittie@lrcc.on.ca Subject: Re: salary survey Sender: owner-linac-eng@plato.aristotle.net To: Russ Olsen Cc: linac-eng@plato.aristotle.net Message-id: <85256E29.006F05D6.00@mail.lrcc.on.ca> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Content-disposition: inline Precedence: bulk X-Lotus-FromDomain: LRCC X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 28 Jan 2004 15:12:39 -0500 From: Randy.McVittie@lrcc.on.ca Subject: Re: salary survey Sender: owner-linac-eng@plato.aristotle.net To: Russ Olsen Cc: linac-eng@plato.aristotle.net Content-disposition: inline X-Lotus-FromDomain: LRCC X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f No salary survey that I know of, but this topic comes up almost every year. Randy McVittie Russ Olsen on 2004-01-28 13:24:40 To: linac-eng@plato.aristotle.net cc: (bcc: Randy McVittie/Lrcc) Subject: salary survey Hello all: I know this subject comes up fairly often here, but is there a salary survey available for Radiotherapy Service Engineers? Thank you, Russell Olsen MCSE Systems Engineer Emory University School of Medicine Department of Radiation Oncology Atlanta, GA __________________________________ Do you Yahoo!? Yahoo! SiteBuilder - Free web site building tool. Try it! http://webhosting.yahoo.com/ps/sb/  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HS800HK543ZCD@hubbard.azu.nl>; Thu, 29 Jan 2004 00:33:43 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004012900333423381 ; Thu, 29 Jan 2004 00:33:34 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id AAA14553; Thu, 29 Jan 2004 00:34:59 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma014455; Thu, 29 Jan 2004 00:34:35 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id OAA19853 for linac-eng-list; Wed, 28 Jan 2004 14:12:52 -0600 (CST) Received: from PHSEXCHICI.MGH.HARVARD.EDU (phsexchici.mgh.harvard.edu [132.183.126.51]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id OAA19849 for ; Wed, 28 Jan 2004 14:12:50 -0600 (CST) Received: by phsexchici.mgh.harvard.edu with Internet Mail Service (5.5.2657.72) id ; Wed, 28 Jan 2004 15:09:32 -0500 Date: Wed, 28 Jan 2004 15:09:26 -0500 From: "Maddox, Buford J" Subject: RE: DMLC QA Sender: owner-linac-eng@plato.aristotle.net To: 'Kim Yeung' , Linac Message-id: <36298D09ED1AD311B4DC0008C7F4D4E111466335@phsexch6.partners.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_cH/qvUO+MX2VqlCG6rv0SQ)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 28 Jan 2004 15:09:26 -0500 From: "Maddox, Buford J" Subject: RE: DMLC QA Sender: owner-linac-eng@plato.aristotle.net To: 'Kim Yeung' , Linac X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_cH/qvUO+MX2VqlCG6rv0SQ) Content-type: text/plain; charset=iso-8859-1 We do not do IMRT with our Mark series 52 leaf. But on another m3 machine we do 5 lines of 2mm width in dynamic mode. the lines are spaced across the field. This is done each morning. Caught a problem last week. Physics does a trial run with calibrations of each dmlc patient plan before beginning treatments. I find autocyle is a good way to spot slow leaves on the Mark series. Usually confirmed by motor current. As these are getting older, the test prescribed by Varian for detecting carriage motion is being done more often. Has anyone found much backlash in old leaf screws? Doing DMLC is a very good way to find any problems that your MLC has. It has to be in very good shape to get through these treatments. Often a problem will only show up with a specific patient file. IMRT QA is a developing topic. There are papers and talks, but there is more to come, I think. Jerry -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Kim Yeung Sent: Wednesday, January 28, 2004 7:33 AM To: Linac Subject: Re: DMLC QA Hi Colleagues, Varian Mark series MLC Could anyone advise if you have some special QA /maintenance procedures for DMLC, i.e. IMRT? Thanks in advance. Kim Yeung --Boundary_(ID_cH/qvUO+MX2VqlCG6rv0SQ) Content-type: text/html; charset=iso-8859-1
We do not do IMRT with our Mark series 52 leaf. 
But on another m3 machine we do 5 lines of 2mm width in dynamic mode.  the lines are spaced across the field.  This is done each morning.   Caught a problem last week.  Physics does a trial run with calibrations of each dmlc patient plan before beginning treatments. 
    I find autocyle is a good way to spot slow leaves on the Mark series.  Usually confirmed by motor current.  As these are getting older, the test prescribed by Varian for detecting carriage motion is being done more often.  Has anyone found much backlash in old leaf screws?   
    Doing DMLC is a very good way to find any problems that your MLC has.  It has to be in very good shape to get through these treatments.  Often a problem will only show up with a specific patient file. 
    IMRT QA is a developing topic.  There are papers and talks, but there is more to come, I think.
Jerry
      
    -----Original Message-----
From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Kim Yeung
Sent: Wednesday, January 28, 2004 7:33 AM
To: Linac
Subject: Re: DMLC QA

Hi Colleagues,
 
        Varian Mark series MLC
 
Could anyone advise if you have some special  QA /maintenance  procedures for DMLC, i.e. IMRT?
 
Thanks in advance.
 
Kim Yeung
--Boundary_(ID_cH/qvUO+MX2VqlCG6rv0SQ)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HS8008IJKAPCD@hubbard.azu.nl>; Thu, 29 Jan 2004 06:23:16 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004012906231128271 ; Thu, 29 Jan 2004 06:23:11 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id GAA16290; Thu, 29 Jan 2004 06:24:37 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma016222; Thu, 29 Jan 2004 06:24:15 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id VAA29653 for linac-eng-list; Wed, 28 Jan 2004 21:17:26 -0600 (CST) Received: from c002.snv.cp.net (h001.c002.snv.cp.net [209.228.32.165]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id VAA29649 for ; Wed, 28 Jan 2004 21:17:24 -0600 (CST) Received: (cpmta 16442 invoked from network); Wed, 28 Jan 2004 19:17:20 -0800 Received: from 209.228.32.166 (HELO mail.peoplepc.com.criticalpath.net) by smtp.peoplepc.com (209.228.32.165) with SMTP; Wed, 28 Jan 2004 19:17:20 -0800 Received: from [65.56.5.52] by mail.peoplepc.com with HTTP; Wed, 28 Jan 2004 19:17:19 -0800 (PST) Date: Wed, 28 Jan 2004 19:17:19 -0800 (PST) From: Michael Lipka Subject: Re: Varian Mk series MLC Sender: owner-linac-eng@plato.aristotle.net To: RSAINC1@aol.com Cc: linac-eng@plato.aristotle.net Message-id: <20040128191720.5924.h002.c002.wm@mail.peoplepc.com.criticalpath.net> MIME-version: 1.0 X-Mailer: Web Mail 5.6.0-2_sol28 Content-type: text/plain; charset=iso-8859-1 Content-disposition: inline Content-transfer-encoding: quoted-printable Precedence: bulk X-Sent: 29 Jan 2004 03:17:20 GMT X-Sent-From: acme007@peoplepc.com X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id VAA29650 X-MIME-Autoconverted: from 8bit to quoted-printable by plato.aristotle.net id VAA29653 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 28 Jan 2004 19:17:19 -0800 (PST) From: Michael Lipka Subject: Re: Varian Mk series MLC Sender: owner-linac-eng@plato.aristotle.net To: RSAINC1@aol.com Cc: linac-eng@plato.aristotle.net Content-disposition: inline X-Sent: 29 Jan 2004 03:17:20 GMT X-Sent-From: acme007@peoplepc.com X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id VAA29650 X-MIME-Autoconverted: from 8bit to quoted-printable by plato.aristotle.net id VAA29653 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Have you tried Radparts? On Tue, 27 Jan 2004 15:48:01 EST, RSAINC1@aol.com wrote: Just wondering if anyone knows a second source for Mark series mlc=A0Ball screw and actuator; =A0part number 01101190-01?=A0=20 Thanks, Roger Senior Imaging Specialist Clinical Engineering Department All Saints Healthcare System 3801 Spring Street Racine,WI 53405 ________________________________________________ PeoplePC: It's for people. And it's just smart.=20 http://www.peoplepc.com=20  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HS8009B0KYA13@hubbard.azu.nl>; Thu, 29 Jan 2004 06:37:25 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004012906372119598 ; Thu, 29 Jan 2004 06:37:21 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id GAA17699; Thu, 29 Jan 2004 06:38:47 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma017658; Thu, 29 Jan 2004 06:38:14 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id VAA29622 for linac-eng-list; Wed, 28 Jan 2004 21:14:33 -0600 (CST) Received: from c002.snv.cp.net (h004.c002.snv.cp.net [209.228.32.168]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id VAA29618 for ; Wed, 28 Jan 2004 21:14:31 -0600 (CST) Received: (cpmta 29152 invoked from network); Wed, 28 Jan 2004 19:14:29 -0800 Received: from 209.228.32.166 (HELO mail.peoplepc.com.criticalpath.net) by smtp.peoplepc.com (209.228.32.168) with SMTP; Wed, 28 Jan 2004 19:14:29 -0800 Received: from [65.56.5.52] by mail.peoplepc.com with HTTP; Wed, 28 Jan 2004 19:14:28 -0800 (PST) Date: Wed, 28 Jan 2004 19:14:28 -0800 (PST) From: Michael Lipka Subject: Re: Impac and Varian Millennium MLC Sender: owner-linac-eng@plato.aristotle.net To: Marc_A_Falcinelli@Wellmont.org Cc: linac-eng@plato.aristotle.net Message-id: <20040128191429.5974.h002.c002.wm@mail.peoplepc.com.criticalpath.net> MIME-version: 1.0 X-Mailer: Web Mail 5.6.0-2_sol28 Content-type: text/plain; charset=iso-8859-1 Content-disposition: inline Content-transfer-encoding: quoted-printable Precedence: bulk X-Sent: 29 Jan 2004 03:14:29 GMT X-Sent-From: acme007@peoplepc.com X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id VAA29619 X-MIME-Autoconverted: from 8bit to quoted-printable by plato.aristotle.net id VAA29622 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 28 Jan 2004 19:14:28 -0800 (PST) From: Michael Lipka Subject: Re: Impac and Varian Millennium MLC Sender: owner-linac-eng@plato.aristotle.net To: Marc_A_Falcinelli@Wellmont.org Cc: linac-eng@plato.aristotle.net Content-disposition: inline X-Sent: 29 Jan 2004 03:14:29 GMT X-Sent-From: acme007@peoplepc.com X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id VAA29619 X-MIME-Autoconverted: from 8bit to quoted-printable by plato.aristotle.net id VAA29622 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f We just had a Impac upgrade and have had nothing but problems. Communication loss is common, several times a day! 21EX with Mil MLC. On Wed, 28 Jan 2004 08:48:05 -0500, "Falcinelli, Marc A" wrote: Impac and Varian Millennium MLC Hello to all, =A0I am interested in receiving feedback from you who have Varian equipment interfaced with Impac. Specifically, I am interested in how a C-series Clinac with a 120 leaf Millennium MLC interfaces with the Impac system. I recall that years ago there were glitches between Impac and the older Varian Mark series MLCs. Have these problems continued? Does the Millennium series MLC operate efficiently without any stalls or lockups? Any overall performance feedback is greatly appreciated. Thank you, Marc Senior Imaging Specialist Clinical Engineering Department All Saints Healthcare System 3801 Spring Street Racine,WI 53405 ________________________________________________ PeoplePC: It's for people. And it's just smart.=20 http://www.peoplepc.com=20  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HS900B2CL1JHO@hubbard.azu.nl>; Thu, 29 Jan 2004 19:36:58 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004012919365508301 ; Thu, 29 Jan 2004 19:36:55 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA27865; Thu, 29 Jan 2004 19:38:20 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma027815; Thu, 29 Jan 2004 19:38:09 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id KAA11325 for linac-eng-list; Thu, 29 Jan 2004 10:05:24 -0600 (CST) Received: from NGATE01.qe2-hsc.ns.ca (smtp.cdha.nshealth.ca [142.176.37.4]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id KAA11321 for ; Thu, 29 Jan 2004 10:05:22 -0600 (CST) Received: from sdc_dom-MTA by NGATE01.qe2-hsc.ns.ca with Novell_GroupWise; Thu, 29 Jan 2004 12:05:17 -0400 Date: Thu, 29 Jan 2004 12:05:06 -0400 From: David Burgess Subject: Re: DMLC QA Sender: owner-linac-eng@plato.aristotle.net To: kimyeung@netvigator.com, linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.5.1 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_EelXszBxDn4FWfVWZcCiSg)" Precedence: bulk X-Guinevere: 2.0.13 ; Capital District Hea X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 29 Jan 2004 12:05:06 -0400 From: David Burgess Subject: Re: DMLC QA Sender: owner-linac-eng@plato.aristotle.net To: kimyeung@netvigator.com, linac-eng@plato.aristotle.net X-Guinevere: 2.0.13 ; Capital District Hea X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This is a MIME message. If you are reading this text, you may want to consider changing to a mail reader or gateway that understands how to properly handle MIME multipart messages. --Boundary_(ID_EelXszBxDn4FWfVWZcCiSg) Content-type: text/plain; charset=ISO-8859-1 Content-transfer-encoding: quoted-printable Some things just for IMRT MLC's (Mark type) in general are :=20 We have found doing Autocycle with the Gantry at 90 or 270 helps = identify leaf motors that tend to be sluggish when lifting the leaves. We also measure the leaf mechanical leaf backlash using a 1/1000 = resolution machinists Dial gauge. The aim here is to keep the backlash the = same on all leaves, so we mix and match parts to achieve it. We aim for = <4/1000 of an inch (0.1mm).=20 The Brushes tend to skip during leaf moves. We don't have a test yet for = scale measuring the Brush fingers, but there is some indication by = measuring the brush backlash at the connection post ( trailer hitch). What = we have found is that the plastic in the brush tends to relax with age and = when the brush backlash on this post reaches >8.5/1000, we replace the = brush. We have seen this backlash as high as 14.5/1000. Last week I = installed 73 new brushes on an 80 because they were starting to fail 1 at = a time and I can't have downtime. The new brushes backlash was from = <2/1000 to 7/1000. We also think the primary motors counts drift slightly in part due to = the power supply drifting during the day. One Mark MLC has the newer style = power supply and the primary motors count has less drift. We find the carriage weight sag a problem on the 80's, but not on the = 52's, and 52's I think are better for IMRT than the older 80's. We have a method for determining the Lead Screw and nut wear in an m3. = This can be done without tools. We do find the m3 goes through a lot of = Lead Screw / nut assemblies so we have to predict replacements. We have = replaced 42 in 1 =BD yrs at 4 patients a day. It seems Autocycle and m3 QA = cause more wear than the patient load.=20 There are many more tests and we have a lot of spec's from a MLC Study = we are continuing with. Also you might get a copy of Thomas J. LoSaaso, Ph.D. of Memorial = Sloan-Ketting Cancer Centres IMRT Delivery System QA.=20 Another publication is IMRT Quality Assurance. It covers Skew, = Sag,Offset,Test patterns,Encoder drift,Leaf speed,and more. David Burgess Nova Scotia Cancer Centre >>> "Kim Yeung" 1/28/2004 8:32:50 AM >>> Hi Colleagues, Varian Mark series MLC Could anyone advise if you have some special QA /maintenance procedures = for DMLC, i.e. IMRT? Thanks in advance. Kim Yeung Confidentiality: This email message may contain confidential information and is intended only for the individual named. If you are not the named addressee you should not disseminate, distribute or copy this email. Please notify the sender immediately by email if you have received this email by mistake and delete this email from your system. Email transmissions cannot be guaranteed to be secure or error free as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or contain viruses. The sender therefore does not accept any liability for errors or omissions in the contents of this message that arise as a result of email transmissions. If verification is required please request a hard copy version. --Boundary_(ID_EelXszBxDn4FWfVWZcCiSg) Content-type: text/html; charset=ISO-8859-1 Content-description: HTML Content-transfer-encoding: quoted-printable
Some things just for IMRT = MLC's (Mark=20 type) in general are :
     We = have found=20 doing Autocycle with the Gantry at 90 or 270 helps identify leaf motors = that=20 tend to be sluggish when lifting the leaves.
    We also = measure the=20 leaf mechanical leaf backlash using a 1/1000 resolution machinists Dial = gauge.=20 The aim here is to keep the backlash the same on all leaves, so we mix and = match=20 parts to achieve it. We aim for <4/1000 of an inch (0.1mm).=20
  The Brushes tend to = skip during=20 leaf moves. We don't have a test yet for scale measuring the Brush = fingers, but=20 there is some indication by measuring the brush backlash at the connection = post=20 ( trailer hitch). What we have found is that the plastic in the brush = tends to=20 relax with age and when the brush backlash on this post reaches >8.5/100= 0, we=20 replace the brush. We have seen this backlash as high as 14.5/1000. Last = week I=20 installed 73 new brushes on an 80 because they were starting to fail 1 at = a time=20 and I can't have downtime. The new brushes backlash was from <2/1000 = to=20 7/1000.
  We also think the = primary motors=20 counts drift slightly in part due to the power supply drifting during the = day.=20 One Mark MLC has the newer style power supply and the primary = motors=20 count has less drift.
   We find the carriage weight sag a = problem on the=20 80's, but not on the 52's, and 52's I think are better for IMRT than = the=20 older 80's.
   We have a method = for=20 determining the Lead Screw and nut wear in an m3. This can be done = without=20 tools. We do find the m3 goes through a lot of Lead Screw / nut = assemblies=20 so we have to predict replacements. We have replaced 42 in 1 =BD yrs = at 4=20 patients a day. It seems Autocycle and m3 QA cause more wear than = the=20 patient load. 
   There are many = more tests=20 and we have a lot of spec's from a MLC Study we are continuing=20 with.
   Also you might = get a copy=20 of Thomas J. LoSaaso, Ph.D. of Memorial Sloan-Ketting Cancer Centres = IMRT=20 Delivery System QA.
   Another = publication=20 is IMRT Quality Assurance. It covers Skew, Sag,Offset,Test patterns,Encoder= =20 drift,Leaf speed,and more.
David Burgess
Nova Scotia Cancer=20 Centre

>>> "Kim Yeung" <kimyeung@netvigator.com&g= t;=20 1/28/2004 8:32:50 AM >>>
Hi Colleagues,
 
       = Varian=20 Mark series MLC
 
Could anyone advise if you have some=20 special  QA /maintenance  procedures for DMLC, i.e.=20 IMRT?
 
Thanks in advance.
 
Kim Yeung
Confidentiality: This email message may contain confidential information and is intended only for the individual named. If you are not the named addressee you should not disseminate, distribute or copy this email. Please notify the sender immediately by email if you have received this email by mistake and delete this email from your system. Email transmissions cannot be guaranteed to be secure or error free as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or contain viruses. The sender therefore does not accept any liability for errors or omissions in the contents of this message that arise as a result of email transmissions. If verification is required please request a hard copy version.
--Boundary_(ID_EelXszBxDn4FWfVWZcCiSg)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HS900IQFTX5AO@hubbard.azu.nl>; Thu, 29 Jan 2004 22:48:43 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004012922484001337 ; Thu, 29 Jan 2004 22:48:40 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id WAA23307; Thu, 29 Jan 2004 22:50:06 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma023258; Thu, 29 Jan 2004 22:49:41 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id NAA15059 for linac-eng-list; Thu, 29 Jan 2004 13:06:50 -0600 (CST) Received: from imo-d03.mx.aol.com (imo-d03.mx.aol.com [205.188.157.35]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id NAA15055 for ; Thu, 29 Jan 2004 13:06:48 -0600 (CST) Received: from GARRYANGEL@aol.com by imo-d03.mx.aol.com (mail_out_v36_r4.12.) id y.54.215fc842 (4328) for ; Thu, 29 Jan 2004 14:05:59 -0500 (EST) Date: Thu, 29 Jan 2004 14:05:59 -0500 (EST) From: GARRYANGEL@aol.com Subject: MACHINES AVAILABLE Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <54.215fc842.2d4ab397@aol.com> MIME-version: 1.0 X-Mailer: 9.0 for Windows sub 5002 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_kA3pSt1LOreHFx4z9lfNuQ)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 29 Jan 2004 14:05:59 -0500 (EST) From: GARRYANGEL@aol.com Subject: MACHINES AVAILABLE Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f --Boundary_(ID_kA3pSt1LOreHFx4z9lfNuQ) Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7bit Hello Everyone ... There machines that are available. CL-1800 (Est. 1986) will need to be removed the week of FEB 23. It is a 6X/18X unit (w/ETR Couch and Ind Jaws)and was refurbed in 1996. Target, Gun, Vacuum pumps, and Klystron were new in 1996. However, there are indications that the Litton Klystron is experiencing a power loss in the high X and high E modes. Riggers are scheduled and will necessarily be committed. The buyer or their representative(s) would be welcome at the site to assist with the disconnect and removal. MEVATRON MD (1995 Conventional) with ZXT Couch w/ IND Jaws. This unit will be available for removal in March. It is in very good condition and has had light patient loads for several years. Original Guide, Magnetron replaced in 2002. CL-6/100 w/ETR & IND JAW this unit is in very good condition and has very light patient load for several years. Original accelerator waveguide. Will need to determine age of Magnetron. I you are interested in any of these units please respond to this email or Fax to my attention at 661-257-1064. I will forward all favorable offers to the equipment owners. Garry --Boundary_(ID_kA3pSt1LOreHFx4z9lfNuQ) Content-type: text/html; charset=US-ASCII Content-transfer-encoding: quoted-printable
Hello Everyone ...
 
There machines that are available. 
 
CL-1800 (Est. 1986) will need to be removed the week o= f FEB 23. It is a 6X/18X unit (w/ETR Couch and Ind Jaws)and= was refurbed in 1996. Target, Gun, Vacuum pumps, and Klystron were new= in 1996.  However, there are indications that the Litton Klystron= is experiencing a power loss in the high X and high E modes. Riggers a= re scheduled and will necessarily be committed. The buyer or their represent= ative(s) would be welcome at the site to assist with the disconnect and remo= val.
 
MEVATRON MD (1995 Conventional) with ZXT Couch= w/ IND Jaws. This unit will be available for removal in March. It=20= is in very good condition and has had light patient loads for several years.= Original Guide, Magnetron replaced in 2002.
 
CL-6/100 w/ETR & IND JAW this unit is in very good= condition and has very light patient load for several years. Original accel= erator waveguide. Will need to determine age of Magnetron.
 
I you are interested in any of these units please respond to this email= or Fax to my attention at 661-257-1064. I will forward all favorable offers= to the equipment owners.
 
Garry
 
 
 
 
--Boundary_(ID_kA3pSt1LOreHFx4z9lfNuQ)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HSB00FQ2I7ILP@hubbard.azu.nl>; Fri, 30 Jan 2004 20:30:56 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004013020305307088 ; Fri, 30 Jan 2004 20:30:53 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id UAA23500; Fri, 30 Jan 2004 20:32:19 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma023453; Fri, 30 Jan 2004 20:31:59 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id LAA06968 for linac-eng-list; Fri, 30 Jan 2004 11:04:14 -0600 (CST) Received: from NGATE01.qe2-hsc.ns.ca (mail.cehha.nshealth.ca [142.176.37.4]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id LAA06964 for ; Fri, 30 Jan 2004 11:04:12 -0600 (CST) Received: from sdc_dom-MTA by NGATE01.qe2-hsc.ns.ca with Novell_GroupWise; Fri, 30 Jan 2004 13:04:08 -0400 Date: Fri, 30 Jan 2004 13:03:54 -0400 From: David Burgess Subject: IMRT QA publications Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.5.1 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_So/4eCMpj8pVS0fCvrdSmg)" Precedence: bulk X-Guinevere: 2.0.13 ; Capital District Hea X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 30 Jan 2004 13:03:54 -0400 From: David Burgess Subject: IMRT QA publications Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-Guinevere: 2.0.13 ; Capital District Hea X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This is a MIME message. If you are reading this text, you may want to consider changing to a mail reader or gateway that understands how to properly handle MIME multipart messages. --Boundary_(ID_So/4eCMpj8pVS0fCvrdSmg) Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7bit Several respondants asked for more info re-sourcing of the IMRT publications. The IMRT Quality Assurance including MLC Quality Assurance, is part of a publication called "Clinical Implementation of IMRT in a Community Setting" by Dr. Chet Ramsey at RIT (www.radimage.com/producttraining.html). The copy is complimentry if you take the training class RIT 113 Ver 4, otherwise I think you have to purchase it from them. The IMRT Delivery System QA publication by Thomas J. LoSasso, Ph.D., of Memorial Sloan-Ketting Cancer Centre was a AAPM Summer School 2003 publication. I suspect you can get it from them. David Burgess Nova Scotia Cancer Centre Confidentiality: This email message may contain confidential information and is intended only for the individual named. If you are not the named addressee you should not disseminate, distribute or copy this email. Please notify the sender immediately by email if you have received this email by mistake and delete this email from your system. Email transmissions cannot be guaranteed to be secure or error free as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or contain viruses. The sender therefore does not accept any liability for errors or omissions in the contents of this message that arise as a result of email transmissions. If verification is required please request a hard copy version. --Boundary_(ID_So/4eCMpj8pVS0fCvrdSmg) Content-type: text/html; charset=ISO-8859-1 Content-description: HTML Content-transfer-encoding: 8bit
Several respondants asked for more info re-sourcing of the IMRT publications.
         The IMRT Quality Assurance including MLC Quality Assurance, is part of a publication called "Clinical Implementation of IMRT in a Community Setting" by Dr. Chet Ramsey at RIT (www.radimage.com/producttraining.html).
The copy is complimentry if you take the training class RIT 113 Ver 4, otherwise I think you have to purchase it from them.
         The IMRT Delivery System QA publication by Thomas J. LoSasso, Ph.D., of Memorial Sloan-Ketting Cancer Centre was a AAPM Summer School 2003 publication. I suspect you can get it from them.
David Burgess
Nova Scotia Cancer Centre
Confidentiality: This email message may contain confidential information and is intended only for the individual named. If you are not the named addressee you should not disseminate, distribute or copy this email. Please notify the sender immediately by email if you have received this email by mistake and delete this email from your system. Email transmissions cannot be guaranteed to be secure or error free as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or contain viruses. The sender therefore does not accept any liability for errors or omissions in the contents of this message that arise as a result of email transmissions. If verification is required please request a hard copy version.
--Boundary_(ID_So/4eCMpj8pVS0fCvrdSmg)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HSF00L44MYA1J@hubbard.azu.nl>; Mon, 2 Feb 2004 02:03:48 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004020202034526814 ; Mon, 02 Feb 2004 02:03:45 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id CAA11619; Mon, 02 Feb 2004 02:05:12 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma011560; Mon, 02 Feb 2004 02:04:56 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id RAA20371 for linac-eng-list; Sun, 01 Feb 2004 17:05:53 -0600 (CST) Received: from imo-r07.mx.aol.com (imo-r07.mx.aol.com [152.163.225.103]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id RAA20367 for ; Sun, 01 Feb 2004 17:05:52 -0600 (CST) Received: from SMcna39074@aol.com by imo-r07.mx.aol.com (mail_out_v36_r4.12.) id m.f7.36057bf9 (16099); Sun, 01 Feb 2004 18:05:16 -0500 (EST) Received: from aol.com (mow-m19.webmail.aol.com [64.12.180.135]) by air-id11.mx.aol.com (v97.18) with ESMTP id MAILINID113-3ee3401d862c19b; Sun, 01 Feb 2004 18:05:16 -0500 Date: Sun, 01 Feb 2004 18:05:16 -0500 From: SMcna39074@aol.com Subject: Re: DMLC QA Sender: owner-linac-eng@plato.aristotle.net To: David.Burgess@cdha.nshealth.ca Cc: linac-eng@plato.aristotle.net Message-id: <6BB485CC.39E9A9C6.0C0A0915@aol.com> MIME-version: 1.0 X-Mailer: Atlas Mailer 2.0 Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 8bit Precedence: bulk X-AOL-IP: 67.126.181.122 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Sun, 01 Feb 2004 18:05:16 -0500 From: SMcna39074@aol.com Subject: Re: DMLC QA Sender: owner-linac-eng@plato.aristotle.net To: David.Burgess@cdha.nshealth.ca Cc: linac-eng@plato.aristotle.net X-AOL-IP: 67.126.181.122 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Regards mlc brush: new brush is available from Varian that is used in the Brainlab system supported by Varian. Fingers have a greater pitch to ensure contact, and there is probably other engineering changes made to it. Stan Cancer Center of Santa Barbara  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HSG00MKRQJALN@hubbard.azu.nl>; Mon, 2 Feb 2004 16:18:51 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004020216184216118 ; Mon, 02 Feb 2004 16:18:42 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id QAA23408; Mon, 02 Feb 2004 16:20:09 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma023072; Mon, 02 Feb 2004 16:19:08 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id GAA29760 for linac-eng-list; Mon, 02 Feb 2004 06:58:00 -0600 (CST) Received: from imsmq02.netvigator.com (n219076064066.netvigator.com [219.76.64.66]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id GAA29756 for ; Mon, 02 Feb 2004 06:57:57 -0600 (CST) Received: (qmail 10369 invoked from network); Mon, 02 Feb 2004 12:57:41 +0000 Received: from n219078013247.netvigator.com (HELO kimyeung) (219.78.13.247) by imsmq02.netvigator.com with SMTP; Mon, 02 Feb 2004 12:57:41 +0000 Date: Mon, 02 Feb 2004 20:46:30 +0800 From: Kim Yeung Subject: Re: Varian IPSN interlock Sender: owner-linac-eng@plato.aristotle.net To: Linac Message-id: <00c501c3e98a$95007660$0202a8c0@kimyeung> MIME-version: 1.0 X-Mailer: Microsoft Outlook Express 6.00.2800.1158 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_lIWPmUUqpFJjXl7N1Y8jdA)" Precedence: bulk X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 *** EOOH *** Date: Mon, 02 Feb 2004 20:46:30 +0800 From: Kim Yeung Subject: Re: Varian IPSN interlock Sender: owner-linac-eng@plato.aristotle.net To: Linac X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 This is a multi-part message in MIME format. --Boundary_(ID_lIWPmUUqpFJjXl7N1Y8jdA) Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: quoted-printable Hi Colleagues, Varian Clinac & Varis, Version 6.1 I was told Clinacs have frequent IPSN interlocks during IMRT treatment = when Varis has a busy traffic. Could anyone advise the followings:- How does the IPSN works?=20 Does the Clinac communicate with the MLC station through Varis during = IMRT? We also experience IPSN interlocks during EDW. Are there any differences = between EDW and IMRT for detecting IPSN ? Could anyone please comment on the above issue. Thanks in advance. Kim Yeung --Boundary_(ID_lIWPmUUqpFJjXl7N1Y8jdA) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: quoted-printable
Hi Colleagues,
 
        = Varian Clinac=20 & Varis, Version 6.1
 
I was told  Clinacs have =20 frequent IPSN interlocks during IMRT treatment when Varis has = a busy=20 traffic.
 
Could anyone advise the = followings:-
How does the IPSN works?
Does the Clinac communicate with the=20 MLC station through Varis during IMRT?
 
We also experience IPSN interlocks = during EDW. Are=20 there any differences between EDW and IMRT for detecting IPSN = ?
 
Could anyone please comment on the = above=20 issue.
 
Thanks in advance.
 
Kim = Yeung 
--Boundary_(ID_lIWPmUUqpFJjXl7N1Y8jdA)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HSI00229K17YM@hubbard.azu.nl>; Tue, 3 Feb 2004 15:53:33 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004020315533000492 ; Tue, 03 Feb 2004 15:53:31 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id PAA28237; Tue, 03 Feb 2004 15:54:58 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma027944; Tue, 03 Feb 2004 15:53:52 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id GAA23076 for linac-eng-list; Tue, 03 Feb 2004 06:40:42 -0600 (CST) Received: from imsm033.netvigator.com (n218102020066.netvigator.com [218.102.20.66] (may be forged)) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id GAA23072 for ; Tue, 03 Feb 2004 06:40:39 -0600 (CST) Received: (qmail 23306 invoked from network); Tue, 03 Feb 2004 12:40:16 +0000 Received: from pcd703236.netvigator.com (HELO kimyeung) (218.102.235.236) by imsm033.netvigator.com with SMTP; Tue, 03 Feb 2004 12:40:16 +0000 Date: Tue, 03 Feb 2004 20:29:04 +0800 From: Kim Yeung Subject: Re: Varian Exact Couch Sender: owner-linac-eng@plato.aristotle.net To: Linac Message-id: <011901c3ea51$4fd956c0$0202a8c0@kimyeung> MIME-version: 1.0 X-Mailer: Microsoft Outlook Express 6.00.2800.1158 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_wfEVEKqtzN5K2jBZvPxKfw)" Precedence: bulk X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 *** EOOH *** Date: Tue, 03 Feb 2004 20:29:04 +0800 From: Kim Yeung Subject: Re: Varian Exact Couch Sender: owner-linac-eng@plato.aristotle.net To: Linac X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 This is a multi-part message in MIME format. --Boundary_(ID_wfEVEKqtzN5K2jBZvPxKfw) Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: quoted-printable Hi Colleagues, We find the two long supporting "bars" of our exact couch are not at the = same level and the deviation between them is about 3mm.=20 Could anyone advise what /how we can do something on the couch? Thanks in advance. Kim Yeung --Boundary_(ID_wfEVEKqtzN5K2jBZvPxKfw) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: quoted-printable
Hi Colleagues,
 
We find the two long supporting "bars" = of our exact=20 couch are not at the same level and the deviation between = them is=20  about 3mm.
 
Could anyone advise what /how we can do = something  on the couch?
 
Thanks in advance.
 
Kim Yeung
--Boundary_(ID_wfEVEKqtzN5K2jBZvPxKfw)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HSK00GEPNYQB0@hubbard.azu.nl>; Wed, 4 Feb 2004 19:13:39 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004020419133305991 ; Wed, 04 Feb 2004 19:13:33 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA04086; Wed, 04 Feb 2004 19:15:02 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma004037; Wed, 04 Feb 2004 19:14:41 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id JAA21760 for linac-eng-list; Wed, 04 Feb 2004 09:34:25 -0600 (CST) Received: from titan.lhsc.on.ca (titan.lhsc.on.ca [142.158.2.20]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id JAA21756 for ; Wed, 04 Feb 2004 09:34:23 -0600 (CST) Received: from mail.lrcc.on.ca (mail.lrcc.on.ca [142.158.120.242]) by titan.lhsc.on.ca (8.11.7p1+Sun/8.11.7) with SMTP id i14FXqg12312 for ; Wed, 04 Feb 2004 10:33:52 -0500 (EST) Received: by mail.lrcc.on.ca(Lotus SMTP MTA v4.6.7 (934.1 12-30-1999)) id 85256E30.0055329F ; Wed, 04 Feb 2004 10:30:35 -0500 Date: Wed, 04 Feb 2004 10:30:29 -0500 From: Randy.McVittie@lrcc.on.ca Subject: MLC fibre optic testing Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <85256E30.005530D6.00@mail.lrcc.on.ca> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Content-disposition: inline Precedence: bulk X-Lotus-FromDomain: LRCC X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 04 Feb 2004 10:30:29 -0500 From: Randy.McVittie@lrcc.on.ca Subject: MLC fibre optic testing Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Content-disposition: inline X-Lotus-FromDomain: LRCC X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hello Everyone Does anyone out there possess and use a Fluke fiberoptic source Model FOS 850 for testing the Fibre Optic transmission of the MLC f/o? If so does it work well? Randy McVittie London Regional Cancer Centre London Ontario Canada  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HSK00LDLTO6AY@hubbard.azu.nl>; Wed, 4 Feb 2004 21:16:55 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004020421164919676 ; Wed, 04 Feb 2004 21:16:49 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id VAA21656; Wed, 04 Feb 2004 21:18:18 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma021510; Wed, 04 Feb 2004 21:17:29 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id LAA24051 for linac-eng-list; Wed, 04 Feb 2004 11:55:05 -0600 (CST) Received: from orcus.cancerboard.ab.ca (cancerserver.cancerboard.ab.ca [164.102.1.2]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id LAA24047 for ; Wed, 04 Feb 2004 11:55:03 -0600 (CST) Received: from kurma.cancerboard.ab.ca (ccimail.cancerboard.ab.ca [164.102.152.198]) by orcus.cancerboard.ab.ca (8.11.7+Sun/8.10.2) with ESMTP id i14Hvh826397; Wed, 04 Feb 2004 10:57:44 -0700 (MST) Received: from cancerboard.ab.ca ([164.102.249.178]) by kurma.cancerboard.ab.ca (Switch-2.2.8/Switch-2.2.0) with ESMTP id i14Ht0721819; Wed, 04 Feb 2004 10:55:00 -0700 (MST) Date: Wed, 04 Feb 2004 10:51:34 -0700 From: Len Johnson Subject: Re: MLC fibre optic testing Sender: owner-linac-eng@plato.aristotle.net To: Randy.McVittie@lrcc.on.ca Cc: linac-eng@plato.aristotle.net Message-id: <40213126.4978429@cancerboard.ab.ca> MIME-version: 1.0 X-Mailer: Mozilla 4.8 [en] (Windows NT 5.0; U) Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 7bit Precedence: bulk X-Accept-Language: en References: <85256E30.005530D6.00@mail.lrcc.on.ca> X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 04 Feb 2004 10:51:34 -0700 From: Len Johnson Subject: Re: MLC fibre optic testing Sender: owner-linac-eng@plato.aristotle.net To: Randy.McVittie@lrcc.on.ca Cc: linac-eng@plato.aristotle.net X-Accept-Language: en X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Randy; Greetings from the frozen North. We have been using the Fluke FOS 850/1300 and the FOM to test our fibers for eight or nine years. works just Varian wants for the testing procedures. You have to choose the 850nm range but otherwise it's really easy to use. Regards, Len Randy.McVittie@lrcc.on.ca wrote: > Hello Everyone > > Does anyone out there possess and use a Fluke fiberoptic source Model FOS 850 > for testing the Fibre Optic transmission of the MLC f/o? > > If so does it work well? > > Randy McVittie > London Regional Cancer Centre > London Ontario > Canada  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HSK00LF1U6XIA@hubbard.azu.nl>; Wed, 4 Feb 2004 21:28:11 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004020421280820573 ; Wed, 04 Feb 2004 21:28:08 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id VAA23148; Wed, 04 Feb 2004 21:29:37 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma023102; Wed, 04 Feb 2004 21:29:15 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id LAA24141 for linac-eng-list; Wed, 04 Feb 2004 11:59:31 -0600 (CST) Received: from email.med.yale.edu (email.med.yale.edu [130.132.232.16]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id LAA24137 for ; Wed, 04 Feb 2004 11:59:30 -0600 (CST) Received: from yale.edu (vitalip.med.yale.edu [130.132.213.170]) by email.med.yale.edu (PMDF V6.1-1 #30873) with ESMTP id <0HSK0VVO7NB3M8@email.med.yale.edu> for linac-eng@plato.aristotle.net; Wed, 04 Feb 2004 12:59:29 -0500 (EST) Date: Wed, 04 Feb 2004 12:59:52 -0500 From: Peter Vitali Subject: Re: MLC fibre optic testing Sender: owner-linac-eng@plato.aristotle.net To: Randy.McVittie@lrcc.on.ca Cc: linac-eng@plato.aristotle.net Message-id: <402132FE.DAFDA5AC@yale.edu> MIME-version: 1.0 X-Mailer: Mozilla 4.76 (Macintosh; U; PPC) Content-type: text/plain; charset=us-ascii; x-mac-type=54455854; x-mac-creator=4D4F5353 Content-transfer-encoding: 7bit Precedence: bulk X-Accept-Language: en References: <85256E30.005530D6.00@mail.lrcc.on.ca> X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 04 Feb 2004 12:59:52 -0500 From: Peter Vitali Subject: Re: MLC fibre optic testing Sender: owner-linac-eng@plato.aristotle.net To: Randy.McVittie@lrcc.on.ca Cc: linac-eng@plato.aristotle.net X-Accept-Language: en X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Randy: I have one and have used it. If the fiber optic is broken it will work immediately. I the fiber optic is damage, you may not see it. We have done fiber optic checks when we received the units and measured all the fiber optic lines in the MLC system. We have taken measurements of the lines connected together and as separate segments. This way we have a base line for if we have to use it in the future. One thing, since there are six fiber optic lines, 4 in use and two as spares, they should all produce the same reading or very close. The lines most likely to be damage are the ones going from the stand to the gantry and the ones going from the Gantry to the MLC. We had to replace the ones going from the gantry to the MLC. Damaged in the windup. Pete Vitali  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HSK00M5AUFU64@hubbard.azu.nl>; Wed, 4 Feb 2004 21:33:32 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004020421332914320 ; Wed, 04 Feb 2004 21:33:29 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id VAA23801; Wed, 04 Feb 2004 21:34:58 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma023692; Wed, 04 Feb 2004 21:34:20 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id MAA24849 for linac-eng-list; Wed, 04 Feb 2004 12:22:54 -0600 (CST) Received: from phsornt422.or.providence.org (phsor-nat2.providence.org [170.220.2.14]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id MAA24845 for ; Wed, 04 Feb 2004 12:22:52 -0600 (CST) Received: from PickupDirectory by phsornt422.or.providence.org with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2653.13) id W5S6G6K6; Wed, 04 Feb 2004 10:22:02 -0800 Received: from phsorcon06.or.providence.org ([170.220.78.187]) by phsornt422.or.providence.org with Microsoft SMTPSVC(5.0.2195.5329); Wed, 04 Feb 2004 10:22:01 -0800 Received: from phsormsg01.or.providence.org ([10.240.243.114]) by phsorcon06.or.providence.org with Microsoft SMTPSVC(5.0.2195.5329); Wed, 04 Feb 2004 10:22:01 -0800 Date: Wed, 04 Feb 2004 10:22:00 -0800 From: John.Kaufman@providence.org Subject: RE: MLC fiber optic testing Sender: owner-linac-eng@plato.aristotle.net To: Randy.McVittie@lrcc.on.ca, linac-eng@plato.aristotle.net Message-id: <361A0F459B160A4D86EB7388D848F30E0E5418@phsormsg01.or.providence.org> MIME-version: 1.0 Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 8bit Importance: normal Precedence: bulk X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4910.0300 Content-Class: urn:content-classes:message Thread-Topic: MLC fibre optic testing thread-index: AcPrP7gZ9mrPUGraTiqtGN0Xkfm0cwACbfdQ X-OriginalArrivalTime: 04 Feb 2004 18:22:01.0280 (UTC) FILETIME=[C8582400:01C3EB4B] X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id MAA24846 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 04 Feb 2004 10:22:00 -0800 From: John.Kaufman@providence.org Subject: RE: MLC fiber optic testing Sender: owner-linac-eng@plato.aristotle.net To: Randy.McVittie@lrcc.on.ca, linac-eng@plato.aristotle.net Importance: normal X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4910.0300 Content-Class: urn:content-classes:message Thread-Topic: MLC fibre optic testing thread-index: AcPrP7gZ9mrPUGraTiqtGN0Xkfm0cwACbfdQ X-OriginalArrivalTime: 04 Feb 2004 18:22:01.0280 (UTC) FILETIME=[C8582400:01C3EB4B] X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id MAA24846 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Yes, Randy we use that very device to check fiber optics and the associated Fluke receiver with this unit. I have experienced one very strange issue with this however. When I measure the source with a 3 foot straight through cable, I read exactly what I expect as far as output on my receiver, -19 db. When I measure the fiber optic cable from the MLC head to the computer I generally read -12 db. Although this does not make any sense to me, it is a good indicator of continuity. That's my experience. John B Kaufman Senior Biomedical Technician Providence Portland Medical Center 503-215-5415 503-215-6397 -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Randy.McVittie@lrcc.on.ca Sent: Wednesday, February 04, 2004 7:30 AM To: linac-eng@plato.aristotle.net Subject: MLC fibre optic testing Hello Everyone Does anyone out there possess and use a Fluke fiberoptic source Model FOS 850 for testing the Fibre Optic transmission of the MLC f/o? If so does it work well? Randy McVittie London Regional Cancer Centre London Ontario Canada DISCLAIMER: This message is intended for the sole use of the individual to whom it is addressed, and may contain information that is privileged, confidential and exempt from disclosure under applicable law. If you are not the addressee you are hereby notified that you may not use, copy, disclose, or distribute to anyone the message or any information contained in the message. If you have received this message in error, please immediately advise the sender by reply email and delete this message.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HSL007AP4JOG6@hubbard.azu.nl>; Thu, 5 Feb 2004 01:11:51 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004020501114803270 ; Thu, 05 Feb 2004 01:11:48 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id BAA19909; Thu, 05 Feb 2004 01:13:16 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma019897; Thu, 05 Feb 2004 01:13:00 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id PAA28682 for linac-eng-list; Wed, 04 Feb 2004 15:30:44 -0600 (CST) Received: from pop.sca.hin.sk.ca (shin.communitynet.ca [216.174.136.2]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id PAA28678 for ; Wed, 04 Feb 2004 15:30:42 -0600 (CST) Received: from smtp.scf.sk.ca (unverified [172.24.48.3]) by scf.sk.ca (Rockliffe SMTPRA 6.0.6) with SMTP id for ; Wed, 04 Feb 2004 15:30:54 -0600 Received: (from RPC035 [172.24.49.35]) by smtp.scf.sk.ca (SAVSMTP 3.1.1.32) with SMTP id M2004020415303508865 for ; Wed, 04 Feb 2004 15:30:37 -0600 Date: Wed, 04 Feb 2004 15:28:43 -0600 From: scot thiesson Subject: ETR side panel off error Sender: owner-linac-eng@plato.aristotle.net To: linac-eng Message-id: Organization: a.b.c.c. MIME-version: 1.0 X-Mailer: Opera 6.0 build 1010 Content-type: text/plain; charset=windows-1252 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 (Normal) *** EOOH *** Date: Wed, 04 Feb 2004 15:28:43 -0600 From: scot thiesson Subject: ETR side panel off error Sender: owner-linac-eng@plato.aristotle.net To: linac-eng Organization: a.b.c.c. X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 (Normal) I think I saw an explanation for this on the list earlier but... My brain must be getting old. We are getting 'panel off' indications on one side of our bed after a beam is run. I believe this means the side panel micro controller needs to be replaced as there is no other indication and a 'panel test' always clears the error. Is my memory correct? Scot Thiesson A.B.C.C Regina Sask. Canada ************************************************************** Scanned by eScan Anti-Virus and Content Security Software. Visit http://www.mwti.net for more info on eScan and MailScan. **************************************************************  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HSM009629HTBB@hubbard.azu.nl>; Thu, 5 Feb 2004 15:56:24 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004020515561601311 ; Thu, 05 Feb 2004 15:56:16 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id PAA25251; Thu, 05 Feb 2004 15:57:45 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma024945; Thu, 05 Feb 2004 15:56:38 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id GAA12957 for linac-eng-list; Thu, 05 Feb 2004 06:43:43 -0600 (CST) Received: from PHSXCHICI4.partners.org (phsxchici4.mgh.harvard.edu [132.183.118.57]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id GAA12953 for ; Thu, 05 Feb 2004 06:43:41 -0600 (CST) Received: by phsxchici4.mgh.harvard.edu with Internet Mail Service (5.5.2657.72) id <1JML26F3>; Thu, 05 Feb 2004 07:43:27 -0500 Date: Thu, 05 Feb 2004 07:43:11 -0500 From: "Maddox, Buford J" Subject: RE: MLC fiber optic testing Sender: owner-linac-eng@plato.aristotle.net To: "'John.Kaufman@providence.org'" , Randy.McVittie@lrcc.on.ca, linac-eng@plato.aristotle.net Message-id: <36298D09ED1AD311B4DC0008C7F4D4E111466347@phsexch6.partners.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=ISO-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 05 Feb 2004 07:43:11 -0500 From: "Maddox, Buford J" Subject: RE: MLC fiber optic testing Sender: owner-linac-eng@plato.aristotle.net To: "'John.Kaufman@providence.org'" , Randy.McVittie@lrcc.on.ca, linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f We have been able to do all our troubleshooting just by looking at the red light coming from the fiber optics on the old Mark 52. Sometimes we use a flashlight at one end and look at the other end. We have purchased the Fluke system, but not taken advantage of it. Our failures have been all or nothing, lost link. Has anyone seen marginal operation, which was caused by degradation of the fiber optic? We are getting two milleniums in the next 6 mo, later than most of you. Any comments on their fiber optics and the use of the Fluke? Jerry -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of John.Kaufman@providence.org Sent: Wednesday, February 04, 2004 1:22 PM To: Randy.McVittie@lrcc.on.ca; linac-eng@plato.aristotle.net Subject: RE: MLC fiber optic testing Yes, Randy we use that very device to check fiber optics and the associated Fluke receiver with this unit. I have experienced one very strange issue with this however. When I measure the source with a 3 foot straight through cable, I read exactly what I expect as far as output on my receiver, -19 db. When I measure the fiber optic cable from the MLC head to the computer I generally read -12 db. Although this does not make any sense to me, it is a good indicator of continuity. That's my experience. John B Kaufman Senior Biomedical Technician Providence Portland Medical Center 503-215-5415 503-215-6397 -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Randy.McVittie@lrcc.on.ca Sent: Wednesday, February 04, 2004 7:30 AM To: linac-eng@plato.aristotle.net Subject: MLC fibre optic testing Hello Everyone Does anyone out there possess and use a Fluke fiberoptic source Model FOS 850 for testing the Fibre Optic transmission of the MLC f/o? If so does it work well? Randy McVittie London Regional Cancer Centre London Ontario Canada DISCLAIMER: This message is intended for the sole use of the individual to whom it is addressed, and may contain information that is privileged, confidential and exempt from disclosure under applicable law. If you are not the addressee you are hereby notified that you may not use, copy, disclose, or distribute to anyone the message or any information contained in the message. If you have received this message in error, please immediately advise the sender by reply email and delete this message.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HSM00HC5FOTFT@hubbard.azu.nl>; Thu, 5 Feb 2004 18:10:06 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004020518100306455 ; Thu, 05 Feb 2004 18:10:04 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA24505; Thu, 05 Feb 2004 18:11:33 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma024441; Thu, 05 Feb 2004 18:10:57 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id IAA14549 for linac-eng-list; Thu, 05 Feb 2004 08:20:51 -0600 (CST) Received: from twmms1.carebridge.net (twmms1.carebridge.net [139.177.230.3]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id IAA14545 for ; Thu, 05 Feb 2004 08:20:49 -0600 (CST) Received: from 32.72.1.9 by twmms1.carebridge.net with SMTP (SMTP Relay) ; Thu, 05 Feb 2004 09:19:10 -0500 Received: from exchange1.phoebe.com ([129.47.10.50]) by smtp2k.phoebe.com (SAVSMTP 3.1.0.29) with SMTP id M2004020509190210680 for ; Thu, 05 Feb 2004 09:19:02 -0500 Received: by exchange1.phoebe.com with Internet Mail Service ( 5.5.2653.19) id <1LHJAFHT>; Thu, 05 Feb 2004 09:19:02 -0500 Date: Thu, 05 Feb 2004 09:15:37 -0500 From: "Eason, Guy" Subject: CT cost (Wes Weston - call me) Sender: owner-linac-eng@plato.aristotle.net To: "Linac-Engineering (E-mail)" Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 7bit Precedence: bulk X-Server-Uuid: 18676035-2975-4217-93ED-B9F36E011F70 X-WSS-ID: 6C3C8F500YG10849863-02-01 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 05 Feb 2004 09:15:37 -0500 From: "Eason, Guy" Subject: CT cost (Wes Weston - call me) Sender: owner-linac-eng@plato.aristotle.net To: "Linac-Engineering (E-mail)" X-Server-Uuid: 18676035-2975-4217-93ED-B9F36E011F70 X-WSS-ID: 6C3C8F500YG10849863-02-01 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Any companies to move CT unit and looking at buying a refurb GE CT. Guy Eason Radiation Oncology Phoebe Putney Memorial Hospital Albany, GA (229) 312-2280 (800) 490-0684 HIPAA Privacy Rule requires covered entities to safeguard certain Protected Health Information (PHI) related to a person's healthcare. Information being sent to you may include PHI, after appropriate consent, acknowledgement, or authorization from the patient or under circumstances that do not require patient authorization. You, the recipient, are obligated to maintain PHI in a safe and secure manner. You may not re-disclose this patient information without additional patient consent or as required by law. Unauthorized re-disclosure or failure to safeguard PHI could subject us, or you, to penalties described in federal (HIPAA) and state law. If you, the reader of this message, are not the intended recipient, or the employee or agent responsible to deliver it to the intended recipient, please notify us immediately and destroy the related message. Thanks for your help.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HSM00ABHZHJXS@hubbard.azu.nl>; Fri, 6 Feb 2004 01:17:46 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004020601174207592 ; Fri, 06 Feb 2004 01:17:42 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id BAA15735; Fri, 06 Feb 2004 01:19:11 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma015687; Fri, 06 Feb 2004 01:18:53 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id PAA26500 for linac-eng-list; Thu, 05 Feb 2004 15:41:21 -0600 (CST) Received: from imo-d05.mx.aol.com (imo-d05.mx.aol.com [205.188.157.37]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id PAA26494 for ; Thu, 05 Feb 2004 15:41:19 -0600 (CST) Received: from Accelassoc@aol.com by imo-d05.mx.aol.com (mail_out_v36_r4.12.) id y.7e.464072b5 (3940) for ; Thu, 05 Feb 2004 16:40:23 -0500 (EST) Date: Thu, 05 Feb 2004 16:40:23 -0500 (EST) From: Accelassoc@aol.com Subject: new bmag supply Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <7e.464072b5.2d541247@aol.com> MIME-version: 1.0 X-Mailer: 9.0 for Windows sub 5100 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_ND7n49pATtfsjC3ZBgW68g)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 05 Feb 2004 16:40:23 -0500 (EST) From: Accelassoc@aol.com Subject: new bmag supply Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f --Boundary_(ID_ND7n49pATtfsjC3ZBgW68g) Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7bit Hi everyone. I had a recent problem with a bmag power supply conversion from the older 2 ton unit on a varian Clinac 18 to the lighterweight version. Varian sells a kit under st-029b. This conversion was accomplished with a purchased power supply part # 880998 from Technical Options of Georgia and the bmag program pcb part#884610-02 , adaptor plate #890244-01, and angle bracket # 890244-01 all from Varian. Also since the kit wasn't purchased a 270 ohm resistor and 10v zener were needed and I used a 50 and 235 ohm resistors from the failed supply and 2 5.1v zeners that I had in my pocket since it was Sunday and supplies were scarce. All seemed to work well except when adjusting the fault on the new card, i couldn't reach the null in 18e which was acceptable for now since they don't use 18e- but they reported that the readouts flicker and were out of cal by 2 degrees on both the coll and gantry. The readouts are cal'd now but the flicker only goes away when the new supply is turned off at it's breaker. All looked normal with connections except a missing 100 ohm /? watt resistor across the program inputs to the supply at terminals 10 and 12. Lastly, they also reported low dose rate in 10x and i tuned pfn and went to check out the above problem and after returning the pfn was out again- I checked the bmag program values and they were just a little off (maybe .5 mv) and when reset to correct values the dose rate was normal. The bmag fault did not trip but does work after testing. Anyway, I appreciate any notes or help. My next plan is to get the 100 ohm resistor, try to find out if an important part of the kit is missing, check the grounds and connections, and consider replacing the new supply or board- since it wasn't a kit the spare board was not included. thanks Best Regards, Bob Dyer Accelerator Associates, Inc. --Boundary_(ID_ND7n49pATtfsjC3ZBgW68g) Content-type: text/html; charset=US-ASCII Content-transfer-encoding: quoted-printable
Hi everyone. I had a recent problem with a bmag power supply conversion= from the older 2 ton unit on a varian Clinac 18 to the lighterweight versio= n. Varian sells a kit under st-029b. This conversion was accomplished with a= purchased power supply part # 880998 from Technical Options of Georgia and=20= the bmag program pcb part#884610-02 , adaptor plate #890244-01, and angle br= acket # 890244-01 all from Varian.
 
Also since the kit wasn't purchased a 270 ohm resistor and 10v zener we= re needed and I used a 50 and 235 ohm resistors from the failed supply and 2=  5.1v zeners that I had in my pocket since it was Sunday and supplies=20= were scarce. All seemed to work well except when adjusting the fault on the=20= new card, i couldn't reach the null in 18e which was acceptable for now= since they don't use 18e- but they reported that the readouts flicker and w= ere out of cal by 2 degrees on both the coll and gantry. The readouts are ca= l'd now but the flicker only goes away when the new supply is turned off at=20= it's breaker. All looked normal with connections except a missing 100 ohm /?= watt resistor across the program inputs to the supply at terminals 10 and 1= 2.
 
Lastly, they also reported low dose rate in 10x and i tuned pfn and wen= t to check out the above problem and after returning the pfn was out again-=20= I checked the bmag program values and they were just a little off (maybe .5=20= mv) and when reset to correct values the dose rate was normal. The bmag faul= t did not trip but does work after testing.
 
Anyway, I appreciate any notes or help. My next plan is to get the 100=20= ohm resistor, try to find out if an important part of the kit is missing, ch= eck the grounds and connections, and consider replacing the new supply or bo= ard- since it wasn't a kit the spare board was not included. thanks
 
Best Regards,
Bob Dyer
Accelerator Associates, Inc. 
--Boundary_(ID_ND7n49pATtfsjC3ZBgW68g)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HSN00BIPOKKNO@hubbard.azu.nl>; Fri, 6 Feb 2004 10:19:40 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004020610193215392 ; Fri, 06 Feb 2004 10:19:32 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id KAA19231; Fri, 06 Feb 2004 10:21:01 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma019124; Fri, 06 Feb 2004 10:20:42 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id BAA07236 for linac-eng-list; Fri, 06 Feb 2004 01:23:31 -0600 (CST) Received: from mail14.messagelabs.com (mail14.messagelabs.com [212.125.75.19]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id BAA07232 for ; Fri, 06 Feb 2004 01:23:29 -0600 (CST) Received: (qmail 10656 invoked from network); Fri, 06 Feb 2004 07:22:55 +0000 Received: from host217-37-197-245.in-addr.btopenworld.com (HELO CHEXCHANGE1.cromwellhospital.com) (217.37.197.245) by server-13.tower-14.messagelabs.com with SMTP; Fri, 06 Feb 2004 07:22:55 +0000 Received: by CHEXCHANGE1.cromwellhospital.com with Internet Mail Service (5.5.2653.19) id <1HW1FRPW>; Fri, 06 Feb 2004 07:26:25 +0000 Date: Fri, 06 Feb 2004 07:26:16 +0000 From: Kerry Clark Subject: A couple of things for the UK engineers Sender: owner-linac-eng@plato.aristotle.net To: "'linac-eng@plato.aristotle.net'" Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-VirusChecked: Checked X-Env-Sender: Kerry.Clark@Cromwellhospital.com X-Msg-Ref: server-13.tower-14.messagelabs.com!1076052175!2373952 X-StarScan-Version: 5.1.15; banners=cromwellhospital.com,-,- X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 06 Feb 2004 07:26:16 +0000 From: Kerry Clark Subject: A couple of things for the UK engineers Sender: owner-linac-eng@plato.aristotle.net To: "'linac-eng@plato.aristotle.net'" X-VirusChecked: Checked X-Env-Sender: Kerry.Clark@Cromwellhospital.com X-Msg-Ref: server-13.tower-14.messagelabs.com!1076052175!2373952 X-StarScan-Version: 5.1.15; banners=cromwellhospital.com,-,- X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hi All, Varian UK now has the EU compliant MSDS for the water additives if anyone is looking for them (they read slightly differently than the US ones supplied). I also have a copy of proposed "agenda for change" bandings for MTO's etc, if you would like a copy please give me a yell. On this topic is it worth while getting our heads together and starting to lobby those who are setting it up now? Our biomed brothers seem firmly in the driving seat, I have yet to see anything that covers the more specialist areas. to the rest of the world, have a nice day. Kerry ************************************************************************* Privileged or Confidential Information may be contained in this message. If you are not the addressee of this message (or responsible for its delivery to the addressee), you may not review or copy it, deliver it to anyone else or use information in it. In such a case, you should destroy this message and kindly notify the sender by reply email. Internet communications are not secure and therefore the Cromwell Hospital does not accept legal responsibility for the contents of this message. Although the Cromwell Hospital operates anti-virus programs, it does not accept responsibility for any damage whatsoever that is caused by viruses being passed. Opinions, conclusions and other information in this message that do not relate to the official business of the Cromwell Hospital are neither given nor endorsed by it. Thank you. ************************************************************************* ________________________________________________________________________ This e-mail has been scanned for all viruses by Star Internet. The service is powered by MessageLabs. For more information on a proactive anti-virus service working around the clock, around the globe, visit: http://www.star.net.uk ________________________________________________________________________  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HSO00DDG5B6GY@hubbard.azu.nl>; Fri, 6 Feb 2004 16:21:09 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004020616210130882 ; Fri, 06 Feb 2004 16:21:01 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id QAA09901; Fri, 06 Feb 2004 16:22:31 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma009778; Fri, 06 Feb 2004 16:22:07 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id HAA11422 for linac-eng-list; Fri, 06 Feb 2004 07:25:58 -0600 (CST) Received: from hotmail.com (bay8-f46.bay8.hotmail.com [64.4.27.46]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id HAA11418 for ; Fri, 06 Feb 2004 07:25:56 -0600 (CST) Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Fri, 06 Feb 2004 05:25:25 -0800 Received: from 24.145.168.50 by by8fd.bay8.hotmail.msn.com with HTTP; Fri, 06 Feb 2004 13:25:25 +0000 (GMT) Date: Fri, 06 Feb 2004 07:25:25 -0600 From: ROD WILLIAMS Subject: RE: MLC fiber optic testing Sender: owner-linac-eng@plato.aristotle.net X-Sender: roddmod@hotmail.com To: JMADDOX@LROC.HARVARD.EDU, John.Kaufman@providence.org, Randy.McVittie@lrcc.on.ca, linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 Content-type: text/plain; CHARSET=US-ASCII; format=flowed Precedence: bulk X-Originating-IP: [24.145.168.50] X-Originating-Email: [roddmod@hotmail.com] X-OriginalArrivalTime: 06 Feb 2004 13:25:25.0720 (UTC) FILETIME=[AE30AD80:01C3ECB4] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 06 Feb 2004 07:25:25 -0600 From: ROD WILLIAMS Subject: RE: MLC fiber optic testing Sender: owner-linac-eng@plato.aristotle.net X-Sender: roddmod@hotmail.com To: JMADDOX@LROC.HARVARD.EDU, John.Kaufman@providence.org, Randy.McVittie@lrcc.on.ca, linac-eng@plato.aristotle.net X-Originating-IP: [24.145.168.50] X-Originating-Email: [roddmod@hotmail.com] X-OriginalArrivalTime: 06 Feb 2004 13:25:25.0720 (UTC) FILETIME=[AE30AD80:01C3ECB4] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f I started checking the fibers as part of my semiannual pm. But have not kept up with it. You may be right it is a all or nothing thing, or if you are having intermittent problems and changed the electronics it might have some value. I do not know what level of broken fibers in the cable that would start giving problems and since no one seems to be posting about this problem I am thinking like you it is a all or nothing thing. ROD WILLIAMS ENCORE ENGINEERING SERVICES 7906 W. DIXON ST MILWAUKEE WI 53214 >From: "Maddox, Buford J" >To: "'John.Kaufman@providence.org'" , >Randy.McVittie@lrcc.on.ca, linac-eng@plato.aristotle.net >Subject: RE: MLC fiber optic testing >Date: Thu, 5 Feb 2004 07:43:11 -0500 > >We have been able to do all our troubleshooting just by looking at the red >light >coming from the fiber optics on the old Mark 52. Sometimes we use a >flashlight >at one end and look at the other end. We have purchased the Fluke system, >but >not taken advantage of it. Our failures have been all or nothing, lost >link. >Has anyone seen marginal operation, which was caused by degradation of the >fiber >optic? We are getting two milleniums in the next 6 mo, later than most of >you. >Any comments on their fiber optics and the use of the Fluke? >Jerry > >-----Original Message----- >From: owner-linac-eng@plato.aristotle.net >[mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of >John.Kaufman@providence.org >Sent: Wednesday, February 04, 2004 1:22 PM >To: Randy.McVittie@lrcc.on.ca; linac-eng@plato.aristotle.net >Subject: RE: MLC fiber optic testing > > >Yes, Randy we use that very device to check fiber optics and the associated >Fluke receiver with this unit. I have experienced one very strange issue >with >this however. >When I measure the source with a 3 foot straight through cable, I read >exactly >what I expect as far as output on my receiver, -19 db. >When I measure the fiber optic cable from the MLC head to the computer I >generally read -12 db. Although this does not make any sense to me, it is a >good >indicator of continuity. >That's my experience. > >John B Kaufman >Senior Biomedical Technician >Providence Portland Medical Center >503-215-5415 >503-215-6397 > > >-----Original Message----- >From: owner-linac-eng@plato.aristotle.net >[mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of >Randy.McVittie@lrcc.on.ca >Sent: Wednesday, February 04, 2004 7:30 AM >To: linac-eng@plato.aristotle.net >Subject: MLC fibre optic testing > > > > >Hello Everyone > > >Does anyone out there possess and use a Fluke fiberoptic source Model FOS >850 >for testing the Fibre Optic transmission of the MLC f/o? > >If so does it work well? > >Randy McVittie >London Regional Cancer Centre >London Ontario >Canada > > > > >DISCLAIMER: >This message is intended for the sole use of the individual to whom it is >addressed, and may contain information that is privileged, confidential and >exempt from disclosure under applicable law. If you are not the addressee >you >are hereby notified that you may not use, copy, disclose, or distribute to >anyone the message or any information contained in the message. If you have >received this message in error, please immediately advise the sender by >reply >email and delete this message. _________________________________________________________________ Keep up with high-tech trends here at "Hook'd on Technology." http://special.msn.com/msnbc/hookedontech.armx  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HSO00EFO61ICD@hubbard.azu.nl>; Fri, 6 Feb 2004 16:36:58 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004020616365317998 ; Fri, 06 Feb 2004 16:36:53 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id QAA12872; Fri, 06 Feb 2004 16:38:22 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma012789; Fri, 06 Feb 2004 16:38:04 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id HAA11483 for linac-eng-list; Fri, 06 Feb 2004 07:28:20 -0600 (CST) Received: from hotmail.com (bay8-f89.bay8.hotmail.com [64.4.27.89]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id HAA11477 for ; Fri, 06 Feb 2004 07:28:19 -0600 (CST) Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Fri, 06 Feb 2004 05:27:48 -0800 Received: from 24.145.168.50 by by8fd.bay8.hotmail.msn.com with HTTP; Fri, 06 Feb 2004 13:27:48 +0000 (GMT) Date: Fri, 06 Feb 2004 07:27:48 -0600 From: ROD WILLIAMS Subject: RE: A couple of things for the UK engineers Sender: owner-linac-eng@plato.aristotle.net X-Sender: roddmod@hotmail.com To: Kerry.Clark@Cromwellhospital.com, linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 Content-type: text/plain; CHARSET=US-ASCII; format=flowed Precedence: bulk X-Originating-IP: [24.145.168.50] X-Originating-Email: [roddmod@hotmail.com] X-OriginalArrivalTime: 06 Feb 2004 13:27:48.0293 (UTC) FILETIME=[032B9750:01C3ECB5] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 06 Feb 2004 07:27:48 -0600 From: ROD WILLIAMS Subject: RE: A couple of things for the UK engineers Sender: owner-linac-eng@plato.aristotle.net X-Sender: roddmod@hotmail.com To: Kerry.Clark@Cromwellhospital.com, linac-eng@plato.aristotle.net X-Originating-IP: [24.145.168.50] X-Originating-Email: [roddmod@hotmail.com] X-OriginalArrivalTime: 06 Feb 2004 13:27:48.0293 (UTC) FILETIME=[032B9750:01C3ECB5] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f I hate to sound dumb but what is "agenda for change" bandings for MTO's etc " I think I would like some.?? ROD WILLIAMS ENCORE ENGINEERING SERVICES 7906 W. DIXON ST MILWAUKEE WI 53214 >From: Kerry Clark >To: "'linac-eng@plato.aristotle.net'" >Subject: A couple of things for the UK engineers >Date: Fri, 6 Feb 2004 07:26:16 -0000 > >Hi All, > Varian UK now has the EU compliant MSDS for the water additives if anyone >is looking for them (they read slightly differently than the US ones >supplied). > >I also have a copy of proposed "agenda for change" bandings for MTO's etc, >if you would like a copy please give me a yell. On this topic is it worth >while getting our heads together and starting to lobby those who are >setting >it up now? Our biomed brothers seem firmly in the driving seat, I have yet >to see anything that covers the more specialist areas. > >to the rest of the world, have a nice day. > > >Kerry > > > >************************************************************************* >Privileged or Confidential Information may be contained in this message. >If >you are not the addressee of this message (or responsible for its delivery >to the addressee), you may not review or copy it, deliver it to anyone else >or use information in it. In such a case, you should destroy this message >and kindly notify the sender by reply email. > >Internet communications are not secure and therefore the Cromwell Hospital >does not accept legal responsibility for the contents of this message. >Although the Cromwell Hospital operates anti-virus programs, it does not >accept responsibility for any damage whatsoever that is caused by viruses >being passed. Opinions, conclusions and other information in this message >that do not relate to the official business of the Cromwell Hospital are >neither given nor endorsed by it. Thank you. >************************************************************************* > >________________________________________________________________________ >This e-mail has been scanned for all viruses by Star Internet. The >service is powered by MessageLabs. For more information on a proactive >anti-virus service working around the clock, around the globe, visit: >http://www.star.net.uk >________________________________________________________________________ _________________________________________________________________ Let the advanced features & services of MSN Internet Software maximize your online time. http://click.atdmt.com/AVE/go/onm00200363ave/direct/01/  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HSO00M0TEZNPS@hubbard.azu.nl>; Fri, 6 Feb 2004 19:50:14 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004020619501007163 ; Fri, 06 Feb 2004 19:50:10 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA09812; Fri, 06 Feb 2004 19:51:40 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma009800; Fri, 06 Feb 2004 19:51:36 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id KAA14509 for linac-eng-list; Fri, 06 Feb 2004 10:42:55 -0600 (CST) Received: from mail23.nhs.uk (mail23.nhs.uk [62.6.139.221]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id KAA14505 for ; Fri, 06 Feb 2004 10:42:53 -0600 (CST) Received: from [10.191.254.3] (helo=relayint1.nhs.uk) by mail23.nhs.uk with esmtp (MTC MTA) id 1Ap93e-00062P-Ge for linac-eng@plato.aristotle.net; Fri, 06 Feb 2004 16:42:22 +0000 Received: from relay.nhs.uk (194.62.42.141) by relayint1.nhs.uk (Syntegra-I1 7.0.008) id 3FB9F7660103CC29 for linac-eng@plato.aristotle.net; Fri, 06 Feb 2004 16:42:22 +0000 Received: from relay.wales.nhs.uk (194.189.180.1) by relay.nhs.uk (Syntegra-1 7.0.008) id 4023A33700018A0D for linac-eng@plato.aristotle.net; Fri, 06 Feb 2004 16:42:22 +0000 Received: from ygc-mail.cd-tr.wales.nhs.uk (131.3.9.10) by relay.wales.nhs.uk (NPlex 2.0.108) for linac-eng@plato.aristotle.net; Fri, 06 Feb 2004 16:41:49 +0000 Received: by YGC-MAIL with Internet Mail Service (5.5.2653.19) id <1JJTBZDY>; Fri, 06 Feb 2004 16:42:36 +0000 Date: Fri, 06 Feb 2004 16:42:08 +0000 From: "Jordan, Tom" Subject: RE: A couple of things for the UK engineers Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <4BD1673C955CD41182DA00508BACF2DF064C79BF@YGC-MAIL> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: text/plain; CHARSET=US-ASCII Precedence: bulk X-Internal-ID: 3FFD0C98001ADF03 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 06 Feb 2004 16:42:08 +0000 From: "Jordan, Tom" Subject: RE: A couple of things for the UK engineers Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-Internal-ID: 3FFD0C98001ADF03 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f I really don't think you would like some. In brief, in the UK Health Service there have been some high profile cases brought under employment law for equal pay for equivalent work. In order to prevent a flood of future claims everyone (and we are talking a lot of people in a lot of different health professions) will have their job evaluated and assigned to bands on a common pay spine. The concern is that as yet the vital nature of medical physics technical staff skills may not be appreciated as much as someone who deals directly with sick and gunge. Oh, and doctors and dentists have managed to get themselves excluded as they are doing nicely, thanks! Tom Jordan > -----Original Message----- > From: ROD WILLIAMS [SMTP:roddmod@hotmail.com] > Sent: 06 February 2004 13:28 > To: Kerry.Clark@Cromwellhospital.com; linac-eng@plato.aristotle.net > Subject: RE: A couple of things for the UK engineers > > I hate to sound dumb but what is "agenda for change" bandings for MTO's > etc " I think I would like some.?? > > > > ROD WILLIAMS > > ENCORE ENGINEERING SERVICES > 7906 W. DIXON ST > MILWAUKEE WI 53214 > > > > > > >From: Kerry Clark > >To: "'linac-eng@plato.aristotle.net'" > >Subject: A couple of things for the UK engineers > >Date: Fri, 6 Feb 2004 07:26:16 -0000 > > > >Hi All, > > Varian UK now has the EU compliant MSDS for the water additives if > anyone > >is looking for them (they read slightly differently than the US ones > >supplied). > > > >I also have a copy of proposed "agenda for change" bandings for MTO's > etc, > >if you would like a copy please give me a yell. On this topic is it worth > >while getting our heads together and starting to lobby those who are > >setting > >it up now? Our biomed brothers seem firmly in the driving seat, I have > yet > >to see anything that covers the more specialist areas. > > > >to the rest of the world, have a nice day. > > > > > >Kerry > > > > > > > >************************************************************************* > >Privileged or Confidential Information may be contained in this message. > > >If > >you are not the addressee of this message (or responsible for its > delivery > >to the addressee), you may not review or copy it, deliver it to anyone > else > >or use information in it. In such a case, you should destroy this > message > >and kindly notify the sender by reply email. > > > >Internet communications are not secure and therefore the Cromwell > Hospital > >does not accept legal responsibility for the contents of this message. > >Although the Cromwell Hospital operates anti-virus programs, it does not > >accept responsibility for any damage whatsoever that is caused by viruses > >being passed. Opinions, conclusions and other information in this > message > >that do not relate to the official business of the Cromwell Hospital are > >neither given nor endorsed by it. Thank you. > >************************************************************************* > > > >________________________________________________________________________ > >This e-mail has been scanned for all viruses by Star Internet. The > >service is powered by MessageLabs. For more information on a proactive > >anti-virus service working around the clock, around the globe, visit: > >http://www.star.net.uk > >________________________________________________________________________ > > _________________________________________________________________ > Let the advanced features & services of MSN Internet Software maximize > your > online time. http://click.atdmt.com/AVE/go/onm00200363ave/direct/01/  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HSS00KISIJINI@hubbard.azu.nl>; Mon, 9 Feb 2004 00:57:20 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004020900571805455 ; Mon, 09 Feb 2004 00:57:18 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id AAA00702; Mon, 09 Feb 2004 00:58:49 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma000683; Mon, 09 Feb 2004 00:58:26 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id QAA27636 for linac-eng-list; Sun, 08 Feb 2004 16:07:26 -0600 (CST) Received: from gondor.dpa.act.gov.au (gondor.dpa.act.gov.au [136.153.2.50]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id QAA27632 for ; Sun, 08 Feb 2004 16:07:23 -0600 (CST) Received: (from smap@localhost) by gondor.dpa.act.gov.au (8.11.1/8.11.1) id i18M7Ir28908 for ; Mon, 09 Feb 2004 09:07:18 +1100 (EST) Received: from unknown(10.226.2.7) by gondor via smap (V5.5) id xmaa28793; Mon, 09 Feb 2004 09:07:07 +1100 Received: by cal007.dpa.act.gov.au with Internet Mail Service (5.5.2657.72) id ; Mon, 09 Feb 2004 09:06:59 +1000 Date: Mon, 09 Feb 2004 09:06:54 +1000 From: "Caunt, Peter" Subject: RE:A couple of things for UK engineers Sender: owner-linac-eng@plato.aristotle.net To: "Linac Eng (E-mail)" Message-id: <2FC7DBCD6D6AD611AD7B0090278CABAEE79E4E@CAL030> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 09 Feb 2004 09:06:54 +1000 From: "Caunt, Peter" Subject: RE:A couple of things for UK engineers Sender: owner-linac-eng@plato.aristotle.net To: "Linac Eng (E-mail)" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Kerry, I have been following the "agenda for change" within the NHS for some time and would be interested in a copy of the information mentioned. I think that international trends provide a "bigger picture" and more basis for building a case. Thanks, Peter Caunt Radiation Oncology Canberra, Australia. Peter.Caunt@act.gov.au "Important: This transmission is intended only for the use of the addressee and may contain confidential or legally privileged information. If you are not the intended recipient, you are notified that any use or dissemination of this communication is strictly prohibited. If you receive this transmission in error please notify the author immediately and delete all copies of this transmission." ---------------------------------------------------------------------------- ------------------------------------------ This email, and any attachments, may be confidential and also privileged. If you are not the intended recipient: Please notify the sender and delete all copies of this transmission along with any attachments immediately. 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Ik ben bij > een inzet wel beschikbaar voor een inzet. > > Met vriendelijke groet, > > Pieter >  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HST00B5SXOV42@hubbard.azu.nl>; Mon, 9 Feb 2004 19:22:09 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004020919220716886 ; Mon, 09 Feb 2004 19:22:07 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA13470; Mon, 09 Feb 2004 19:23:37 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma013445; Mon, 09 Feb 2004 19:23:20 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id JAA15887 for linac-eng-list; Mon, 09 Feb 2004 09:46:26 -0600 (CST) Received: from mail23.nhs.uk (mail23.nhs.uk [62.6.139.221]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id JAA15883 for ; Mon, 09 Feb 2004 09:46:24 -0600 (CST) Received: from [10.191.254.3] (helo=relayint2.nhs.uk) by mail23.nhs.uk with esmtp (MTC MTA) id 1AqDbd-0007AI-V2 for linac-eng@plato.aristotle.net; Mon, 09 Feb 2004 15:45:53 +0000 Received: from relay.nhs.uk (194.62.42.144) by relayint2.nhs.uk (Syntegra-I2 7.0.008) id 3FB9F979012D83FB for linac-eng@plato.aristotle.net; Mon, 09 Feb 2004 15:45:53 +0000 Received: from mercury.University-b.wmids.nhs.uk (193.240.116.176) by relay.nhs.uk (Syntegra-4 7.0.008) (authenticated as smtp_uhb_nhs_uk@es2002.nhs.uk) id 4027906200013D19 for linac-eng@plato.aristotle.net; Mon, 09 Feb 2004 15:45:53 +0000 Received: by MERCURY with Internet Mail Service (5.5.2653.19) id <1S061280>; Mon, 09 Feb 2004 15:45:52 +0000 Date: Mon, 09 Feb 2004 15:43:43 +0000 From: Graham Chalmers Subject: HT CON D Inhibits ELEKTA Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <71A7A8BA33E3D511AF5E00034797029B1053537C@HERMES> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_XRxW2yPpzkQj46GjNObLCA)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 09 Feb 2004 15:43:43 +0000 From: Graham Chalmers Subject: HT CON D Inhibits ELEKTA Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_XRxW2yPpzkQj46GjNObLCA) Content-type: text/plain; CHARSET=US-ASCII Dear list We have an intermittent problem on an SL15 LA. We are seeing the occasional HT Con D inhibits which appear to be only on electrons and soon after pressing start i.e. before the gun is turned up so not appearing to be a genuine hardware issue with the contactor circuits. They seem to occur towards the beginning of the day. Sometimes changing to higher/lower energy electrons can sort the problem. Previous conversations with Elekta may point to a noise problem with the magnetron which is a number of years old. Has anyone seen a similar fault and if so can you let me know whether the magnetron is the most likely cause of the problem or whether another faulty item has been found to cause similar symptoms or any way of proving this conclusively given magnetron expense? I should add this is a machine generally running 8MV X rays and 4-14 MeV electrons. Many thanks Graham Chalmers Graham Chalmers Radiotherapy Physics University Hospital Birmingham NHS Trust Birmingham B15 2TH 0121-627-2266 DISCLAIMER: This e-mail contains proprietary information some or all of which may be confidential or legally privileged. It is for the exclusive use of the intended recipient(s) only. If an addressing or transmission error has misdirected this e-mail and you are not the intended recipient(s), please notify the author by replying to this e-mail. If you are not the intended recipient you must not use, disclose, distribute, copy, print, or rely on this e-mail, as this may be unlawful. DISCLAIMER: This e-mail contains proprietary information some or all of which may be confidential or legally privileged. It is for the exclusive use of the intended recipient(s) only. If an addressing or transmission error has misdirected this e-mail and you are not the intended recipient(s), please notify the author by replying to this e-mail. If you are not the intended recipient you must not use, disclose, distribute, copy, print, or rely on this e-mail, as this may be unlawful. --Boundary_(ID_XRxW2yPpzkQj46GjNObLCA) Content-type: text/html

Dear list

 

We have an intermittent problem on an SL15 LA.

 

We are seeing the occasional HT Con D inhibits which appear to be only on electrons and soon after pressing start i.e. before the gun is turned up so not appearing to be a genuine hardware issue with the contactor circuits. They seem to occur towards the beginning of the day. Sometimes changing to higher/lower energy electrons can sort the problem.

Previous conversations with Elekta may point to a noise problem with the magnetron which is a number of years old. Has anyone seen a similar fault and if so can you let me know whether the magnetron is the most likely cause of the problem or whether another faulty item has been found to cause similar symptoms or any way of proving this conclusively given magnetron expense?

 

I should add this is a machine generally running 8MV X rays and 4-14 MeV electrons.

 

Many thanks

 

Graham Chalmers

 

 

Graham Chalmers 

Radiotherapy Physics

University Hospital Birmingham NHS Trust

Birmingham B15 2TH

0121-627-2266

 

 

 

 

DISCLAIMER: This e-mail contains proprietary information some or all of which may be confidential or legally privileged. It is for the exclusive use of the intended recipient(s) only. If an addressing or transmission error has misdirected this e-mail and you are not the intended recipient(s), please notify the author by replying to this e-mail. If you are not the intended recipient you must not use, disclose, distribute, copy, print, or rely on this e-mail, as this may be unlawful.

 

DISCLAIMER: This e-mail contains proprietary information some or all of which may be confidential or legally privileged. It is for the exclusive use of the intended recipient(s) only. If an addressing or transmission error has misdirected this e-mail and you are not the intended recipient(s), please notify the author by replying to this e-mail. If you are not the intended recipient you must not use, disclose, distribute, copy, print, or rely on this e-mail, as this may be unlawful.

--Boundary_(ID_XRxW2yPpzkQj46GjNObLCA)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HSV007O97LHLM@hubbard.azu.nl>; Tue, 10 Feb 2004 11:53:43 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004021011534107077 ; Tue, 10 Feb 2004 11:53:41 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id LAA22677; Tue, 10 Feb 2004 11:55:12 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma022568; Tue, 10 Feb 2004 11:54:34 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id CAA02906 for linac-eng-list; Tue, 10 Feb 2004 02:40:16 -0600 (CST) Received: from mail1.aaa.dk (mail1.aaa.dk [212.130.128.220]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id CAA02902 for ; Tue, 10 Feb 2004 02:40:14 -0600 (CST) Received: from amt-gwia.ag.aaa.dk [10.79.129.11] by mail1.aaa.dk; Tue, 10 Feb 2004 09:39:35 +0100 Received: from arhusamt-MTA by amt-gwia.ag.aaa.dk with Novell_GroupWise; Tue, 10 Feb 2004 09:39:34 +0100 Date: Tue, 10 Feb 2004 09:39:28 +0100 From: "Ole G. Nielsen" Subject: Vedr.: HT CON D Inhibits ELEKTA Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net, Graham.Chalmers@uhb.nhs.uk Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.5.1 Content-type: text/plain; charset=US-ASCII Content-disposition: inline Content-transfer-encoding: 7bit Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 10 Feb 2004 09:39:28 +0100 From: "Ole G. Nielsen" Subject: Vedr.: HT CON D Inhibits ELEKTA Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net, Graham.Chalmers@uhb.nhs.uk Content-disposition: inline X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Dear Graham, according my wear memory there is a ROC card involved when activating HT Con D. We have had all sorts of intermittent problems with the relays on the ROC card. So a wild shot could be swapping ROC-A with ROC-B. If that don't fix (= move) your problem you must continue with more advanced thinking. Good luck Ole Ole G. Nielsen Dept. of Medical Physics Aarhus University Hospital Phone +45 8949 2487 Fax +45 8949 2590 >>> Graham Chalmers 09-02-04 16:43 >>> Dear list We have an intermittent problem on an SL15 LA. We are seeing the occasional HT Con D inhibits which appear to be only on electrons and soon after pressing start i.e. before the gun is turned up so not appearing to be a genuine hardware issue with the contactor circuits. They seem to occur towards the beginning of the day. Sometimes changing to higher/lower energy electrons can sort the problem. Previous conversations with Elekta may point to a noise problem with the magnetron which is a number of years old. Has anyone seen a similar fault and if so can you let me know whether the magnetron is the most likely cause of the problem or whether another faulty item has been found to cause similar symptoms or any way of proving this conclusively given magnetron expense? I should add this is a machine generally running 8MV X rays and 4-14 MeV electrons. Many thanks Graham Chalmers Graham Chalmers Radiotherapy Physics University Hospital Birmingham NHS Trust Birmingham B15 2TH 0121-627-2266 DISCLAIMER: This e-mail contains proprietary information some or all of which may be confidential or legally privileged. It is for the exclusive use of the intended recipient(s) only. If an addressing or transmission error has misdirected this e-mail and you are not the intended recipient(s), please notify the author by replying to this e-mail. If you are not the intended recipient you must not use, disclose, distribute, copy, print, or rely on this e-mail, as this may be unlawful. DISCLAIMER: This e-mail contains proprietary information some or all of which may be confidential or legally privileged. It is for the exclusive use of the intended recipient(s) only. If an addressing or transmission error has misdirected this e-mail and you are not the intended recipient(s), please notify the author by replying to this e-mail. If you are not the intended recipient you must not use, disclose, distribute, copy, print, or rely on this e-mail, as this may be unlawful.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HSV00FAODHIUS@hubbard.azu.nl>; Tue, 10 Feb 2004 14:01:00 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004021014005102114 ; Tue, 10 Feb 2004 14:00:51 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id OAA24007; Tue, 10 Feb 2004 14:02:22 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma023881; Tue, 10 Feb 2004 14:01:42 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id FAA05761 for linac-eng-list; Tue, 10 Feb 2004 05:08:31 -0600 (CST) Received: from mail20.nhs.uk (mail20.nhs.uk [62.6.139.212]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id FAA05757 for ; Tue, 10 Feb 2004 05:08:29 -0600 (CST) Received: from [10.191.254.3] (helo=relayint1.nhs.uk) by mail20.nhs.uk with esmtp (MTC MTA) id 1AqVkE-00020n-Hd for linac-eng@plato.aristotle.net; Tue, 10 Feb 2004 11:07:58 +0000 Received: from relay.nhs.uk (194.62.42.142) by relayint1.nhs.uk (Syntegra-I1 7.0.008) id 3FB9F766010C2925 for linac-eng@plato.aristotle.net; Tue, 10 Feb 2004 11:07:58 +0000 Received: from smtp.leedsth.nhs.uk (163.160.107.2) by relay.nhs.uk (Syntegra-2 7.0.008) (authenticated as smtp_leedsth_nhs_uk@es2002.nhs.uk) id 4028AACD0000DEE6 for linac-eng@plato.aristotle.net; Tue, 10 Feb 2004 11:07:58 +0000 Received: from LTH-MTA by smtp.leedsth.nhs.uk with Novell_GroupWise; Tue, 10 Feb 2004 11:07:04 +0000 Date: Tue, 10 Feb 2004 11:06:51 +0000 From: Chris Forrest Subject: Re: HT CON D Inhibits ELEKTA Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net, Graham.Chalmers@uhb.nhs.uk Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.0.2 Content-type: text/plain; charset=US-ASCII Content-disposition: inline Content-transfer-encoding: 8bit Precedence: bulk X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id FAA05758 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 10 Feb 2004 11:06:51 +0000 From: Chris Forrest Subject: Re: HT CON D Inhibits ELEKTA Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net, Graham.Chalmers@uhb.nhs.uk Content-disposition: inline X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id FAA05758 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Graham, We've found this is usually due to insuffient voltage to the coil of HTCON D. The coil requires much more current to pull in that it does to hold in. If you have a marginal situation, where you already have significant volt drop across the HT interlock line, it only takes a slight change in conditions e.g. high resistance contact in IRC card, room doors, wiring, connectors, to make HT conD fail to pull in sometimes. (Perhaps worse when cold as the coil will draw more current) We had a tip to beef up the wiring to SK70X which helped. I would also be tempted to temporarily jack up the HT interlock voltage by re-tapping transformer T1. This may at least tell you if a volt drop across the interlock line that is the cause of your problem before you go chasing a "noise" problem. best of luck Chris Chris Forrest Technical Specialist Radiotherapy Technology Services Department of Medical Physics & Engineering Leeds Teaching Hospitals NHS Trust Cookridge Hospital Hospital Lane Leeds LS16 6QB UK Tel. +44 113 3924354 Fax. +44 113 3924122 >>> Graham Chalmers 09/02/2004 15:43:43 >>> Dear list We have an intermittent problem on an SL15 LA. We are seeing the occasional HT Con D inhibits which appear to be only on electrons and soon after pressing start i.e. before the gun is turned up so not appearing to be a genuine hardware issue with the contactor circuits. They seem to occur towards the beginning of the day. Sometimes changing to higher/lower energy electrons can sort the problem. Previous conversations with Elekta may point to a noise problem with the magnetron which is a number of years old. Has anyone seen a similar fault and if so can you let me know whether the magnetron is the most likely cause of the problem or whether another faulty item has been found to cause similar symptoms or any way of proving this conclusively given magnetron expense? I should add this is a machine generally running 8MV X rays and 4-14 MeV electrons. Many thanks Graham Chalmers Graham Chalmers Radiotherapy Physics University Hospital Birmingham NHS Trust Birmingham B15 2TH 0121-627-2266 DISCLAIMER: This e-mail contains proprietary information some or all of which may be confidential or legally privileged. It is for the exclusive use of the intended recipient(s) only. If an addressing or transmission error has misdirected this e-mail and you are not the intended recipient(s), please notify the author by replying to this e-mail. If you are not the intended recipient you must not use, disclose, distribute, copy, print, or rely on this e-mail, as this may be unlawful. DISCLAIMER: This e-mail contains proprietary information some or all of which may be confidential or legally privileged. It is for the exclusive use of the intended recipient(s) only. If an addressing or transmission error has misdirected this e-mail and you are not the intended recipient(s), please notify the author by replying to this e-mail. If you are not the intended recipient you must not use, disclose, distribute, copy, print, or rely on this e-mail, as this may be unlawful.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HSV00K8TF7VMJ@hubbard.azu.nl>; Tue, 10 Feb 2004 14:38:23 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004021014381811572 ; Tue, 10 Feb 2004 14:38:18 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id OAA03148; Tue, 10 Feb 2004 14:39:49 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma002912; Tue, 10 Feb 2004 14:38:51 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id FAA06653 for linac-eng-list; Tue, 10 Feb 2004 05:53:34 -0600 (CST) Received: from hotmail.com (bay3-dav70.bay3.hotmail.com [65.54.169.100]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id FAA06649 for ; Tue, 10 Feb 2004 05:53:32 -0600 (CST) Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Tue, 10 Feb 2004 03:53:02 -0800 Received: from 204.32.78.188 by bay3-dav70.adinternal.hotmail.com with DAV; Tue, 10 Feb 2004 11:53:01 +0000 Date: Tue, 10 Feb 2004 06:53:00 -0500 From: Timothy Forsgren Subject: Re: Vedr.: HT CON D Inhibits ELEKTA Sender: owner-linac-eng@plato.aristotle.net X-Sender: tforsgren@msn.com To: "Ole G. Nielsen" , linac-eng@plato.aristotle.net, Graham.Chalmers@uhb.nhs.uk Message-id: MIME-version: 1.0 X-Mailer: MSN Explorer 7.02.0011.2700 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_BhZqr/VHzt+Gfyzc3mZBwQ)" Precedence: bulk X-Originating-IP: [204.32.78.188] X-Originating-Email: [tforsgren@msn.com] X-OriginalArrivalTime: 10 Feb 2004 11:53:02.0068 (UTC) FILETIME=[6F918340:01C3EFCC] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 10 Feb 2004 06:53:00 -0500 From: Timothy Forsgren Subject: Re: Vedr.: HT CON D Inhibits ELEKTA Sender: owner-linac-eng@plato.aristotle.net X-Sender: tforsgren@msn.com To: "Ole G. Nielsen" , linac-eng@plato.aristotle.net, Graham.Chalmers@uhb.nhs.uk X-Originating-IP: [204.32.78.188] X-Originating-Email: [tforsgren@msn.com] X-OriginalArrivalTime: 10 Feb 2004 11:53:02.0068 (UTC) FILETIME=[6F918340:01C3EFCC] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f --Boundary_(ID_BhZqr/VHzt+Gfyzc3mZBwQ) Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: quoted-printable Graham, you may want to investigate swapping the thyratron first. A noisy= device, and much less expensive than a maggie. Good luck, Tim ----- Original Message ----- From: Ole G. Nielsen Sent: Tuesday, February 10, 2004 5:22 AM To: linac-eng@plato.aristotle.net; Graham.Chalmers@uhb.nhs.uk Subject: Vedr.: HT CON D Inhibits ELEKTA Dear Graham, according my wear memory there is a ROC card involved when activating HT Con D. We have had all sorts of intermittent problems with the relays on the ROC card. So a wild shot could be swapping ROC-A with ROC-B. If that don't fix (=3D move) your problem you must continue with more advanced thinking. Good luck Ole Ole G. Nielsen Dept. of Medical Physics Aarhus University Hospital Phone +45 8949 2487 Fax +45 8949 2590 >>> Graham Chalmers 09-02-04 16:43 >>> Dear list We have an intermittent problem on an SL15 LA. We are seeing the occasional HT Con D inhibits which appear to be only on electrons and soon after pressing start i.e. before the gun is turned up so not appearing to be a genuine hardware issue with the contactor circuits. They seem to occur towards the beginning of the day. Sometimes changing to higher/lower energy electrons can sort the problem. Previous conversations with Elekta may point to a noise problem with the magnetron which is a number of years old. Has anyone seen a similar fault and if so can you let me know whether the magnetron is the most likely cause of the problem or whether another faulty item has been found to cause similar symptoms or any way of proving this conclusively given magnetron expense? I should add this is a machine generally running 8MV X rays and 4-14 MeV electrons. Many thanks Graham Chalmers Graham Chalmers =20 Radiotherapy Physics University Hospital Birmingham NHS Trust Birmingham B15 2TH 0121-627-2266 DISCLAIMER: This e-mail contains proprietary information some or all of which may be confidential or legally privileged. It is for the exclusive use of the intended recipient(s) only. If an addressing or transmission error has misdirected this e-mail and you are not the intended recipient(s), please notify the author by replying to this e-mail. If you are not the intended recipient you must not use, disclose, distribute, copy, print, or rely on this e-mail, as this may be unlawful. DISCLAIMER: This e-mail contains proprietary information some or all of which may be confidential or legally privileged. It is for the exclusive use of the intended recipient(s) only. If an addressing or transmission error has misdirected this e-mail and you are not the intended recipient(s), please notify the author by replying to this e-mail. If you are not the intended recipient you must not use, disclose, distribute, copy, print, or rely on this e-mail, as this may be unlawful. --Boundary_(ID_BhZqr/VHzt+Gfyzc3mZBwQ) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: quoted-printable
Graham, you ma= y want to investigate swapping the thyratron first. A noisy device, and m= uch less expensive than a maggie. Good luck, Tim
 
=
----- Original Message -----
From: Ole G. Nielsen<= /DIV>
Sent: Tuesday, February 10, = 2004 5:22 AM
To: linac-eng@p= lato.aristotle.net; Graham.Chalmers@uhb.nhs.uk
Subject: Vedr.: HT CON D Inhibits ELEKTA
&n= bsp;
Dear Graham,
according my wear memory there is a ROC card in= volved when activating
HT Con D. We have had all sorts of intermittent= problems with the relays
on the ROC card.
So a wild shot could be = swapping ROC-A with ROC-B.

If that don't fix (=3D move) your probl= em you must continue with more
advanced thinking.

Good luck
= Ole

Ole G. Nielsen
Dept. of Medical Physics
Aarhus Universit= y Hospital
Phone +45 8949 2487
Fax +45 8949 2590


>>= ;> Graham Chalmers <Graham.Chalmers@uhb.nhs.uk> 09-02-04 16:43 &= gt;>>
Dear list



We have an intermittent problem o= n an SL15 LA.



We are seeing the occasional HT Con D inhibi= ts which appear to be only
on
electrons and soon after pressing sta= rt i.e. before the gun is turned
up so
not appearing to be a genuin= e hardware issue with the contactor
circuits.
They seem to occur to= wards the beginning of the day. Sometimes changing
to
higher/lower = energy electrons can sort the problem.

Previous conversations with= Elekta may point to a noise problem with
the
magnetron which is a = number of years old. Has anyone seen a similar
fault
and if so can = you let me know whether the magnetron is the most likely
cause
of t= he problem or whether another faulty item has been found to cause
simi= lar symptoms or any way of proving this conclusively given
magnetronexpense?



I should add this is a machine generally runnin= g 8MV X rays and 4-14
MeV
electrons.



Many thanks
=


Graham Chalmers





Graham Chalmers
Radiotherapy Physics

University Hospital Birmingham NHS Trust
Birmingham B15 2TH

0121-627-2266






<= BR>

DISCLAIMER: This e-mail contains proprietary information some = or all
of
which may be confidential or legally privileged. It is fo= r the
exclusive use
of the intended recipient(s) only. If an addres= sing or transmission
error
has misdirected this e-mail and you are = not the intended recipient(s),
please notify the author by replying to= this e-mail. If you are not
the
intended recipient you must not us= e, disclose, distribute, copy, print,
or
rely on this e-mail, as th= is may be unlawful.



DISCLAIMER: This e-mail contains propr= ietary information some or all
of
which may be confidential or lega= lly privileged. It is for the
exclusive use
of the intended recipie= nt(s) only. If an addressing or transmission
error
has misdirected = this e-mail and you are not the intended recipient(s),
please notify t= he author by replying to this e-mail. If you are not
the
intended r= ecipient you must not use, disclose, distribute, copy, print,
or
re= ly on this e-mail, as this may be unlawful.
--Boundary_(ID_BhZqr/VHzt+Gfyzc3mZBwQ)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HSY0056V4SH7Y@hubbard.azu.nl>; Thu, 12 Feb 2004 01:45:54 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004021201455203802 ; Thu, 12 Feb 2004 01:45:52 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id BAA28444; Thu, 12 Feb 2004 01:47:24 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma028401; Thu, 12 Feb 2004 01:47:06 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id QAA18550 for linac-eng-list; Wed, 11 Feb 2004 16:45:59 -0600 (CST) Received: from 17RADLAPPC01 ([65.174.193.218]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id QAA18546 for ; Wed, 11 Feb 2004 16:45:57 -0600 (CST) Date: Wed, 11 Feb 2004 17:46:25 -0500 From: Scott Mange Subject: Trans. Symmetry 2100 C climbing from 0 to more than 2% Sender: owner-linac-eng@plato.aristotle.net X-Sender: smange@mailhost.det.ameritech.net (Unverified) To: linac-eng@plato.aristotle.net Message-id: <5.1.0.14.2.20040211174227.00a4ae80@mailhost.det.ameritech.net> MIME-version: 1.0 X-Mailer: QUALCOMM Windows Eudora Version 5.1 Content-type: MULTIPART/MIXED; BOUNDARY="Boundary_(ID_Efa/2f11EooCxn6M9nSscw)"; x-avg-checked=avg-ok-6FE225BC Precedence: bulk X-GCMulti: 1 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 11 Feb 2004 17:46:25 -0500 From: Scott Mange Subject: Trans. Symmetry 2100 C climbing from 0 to more than 2% Sender: owner-linac-eng@plato.aristotle.net X-Sender: smange@mailhost.det.ameritech.net (Unverified) To: linac-eng@plato.aristotle.net X-GCMulti: 1 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f --Boundary_(ID_Efa/2f11EooCxn6M9nSscw) Content-type: text/plain; format=flowed; charset=us-ascii; x-avg-checked=avg-ok-6FE225BC Content-transfer-encoding: 8bit Dear Engineers, Being a physicist I don't know how to fix this problem and need your help. Our 2100C ser. 1743 is starting to throw EXQ2 faults (trans. symmetry). I can be in service mode, beam on and watch the symmetry change from 0 to +1% or thereabouts. If the machine has not been beamed-on for a little while, say 30mins., the problem is worse. Your thoughts are greatly appreciated. I don't know if this is a simple fix or something for which I need to get the water scanner out. I hate the idea of coming in this weekend but will if necessary. Thank you in advance. Sincerely, Scott Mange --Boundary_(ID_Efa/2f11EooCxn6M9nSscw) Content-type: text/plain; x-avg-checked=avg-ok-6FE225BC; x-avg=cert; charset=us-ascii Content-disposition: inline --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.581 / Virus Database: 368 - Release Date: 2/9/04 --Boundary_(ID_Efa/2f11EooCxn6M9nSscw)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HSY0066I6C7M6@hubbard.azu.nl>; Thu, 12 Feb 2004 02:19:20 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004021202191210193 ; Thu, 12 Feb 2004 02:19:12 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id CAA01474; Thu, 12 Feb 2004 02:20:44 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma001453; Thu, 12 Feb 2004 02:20:23 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id RAA19644 for linac-eng-list; Wed, 11 Feb 2004 17:40:48 -0600 (CST) Received: from clift.nettas.net (clift.nettas.net [202.7.15.71]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id RAA19640 for ; Wed, 11 Feb 2004 17:40:46 -0600 (CST) Received: from dchs6305.dchs.tas.gov.au (pc2326.dhhs.tas.gov.au [147.109.23.26]) by clift.nettas.net (8.12.7-20030918/8.12.7) with ESMTP id i1BNiR1P007907 for ; Thu, 12 Feb 2004 10:44:27 +1100 (EST) Received: by dchs6305.dchs.tas.gov.au with Internet Mail Service (5.5.2655.55) id <1Q8ZB6Y2>; Thu, 12 Feb 2004 10:40:38 +1100 Date: Thu, 12 Feb 2004 10:40:33 +1100 From: Causby Damian Subject: Gun Driver power supply Sender: owner-linac-eng@plato.aristotle.net To: "'linac-eng@plato.aristotle.net'" Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2655.55) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 12 Feb 2004 10:40:33 +1100 From: Causby Damian Subject: Gun Driver power supply Sender: owner-linac-eng@plato.aristotle.net To: "'linac-eng@plato.aristotle.net'" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Good morning to List members, I have a simple question, Does anyone know why the fuses f1 f2 & f3 on the Gun deck power supply are a loose push in fit and not soldered in. Damian Causby Engineering Operations Manager Dept of Radiation Oncology Launceston General Hospital TAS, Australia ph 03 6348 7151 fax 03 6361 6371 damian.causby@dhhs.tas.gov.au  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HSY00FF2G5PA5@hubbard.azu.nl>; Thu, 12 Feb 2004 05:51:26 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004021205511805326 ; Thu, 12 Feb 2004 05:51:18 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id FAA18946; Thu, 12 Feb 2004 05:52:51 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma018922; Thu, 12 Feb 2004 05:52:31 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id VAA23368 for linac-eng-list; Wed, 11 Feb 2004 21:09:40 -0600 (CST) Received: from valley.nettas.net (valley.nettas.net [202.7.15.73]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id VAA23361 for ; Wed, 11 Feb 2004 21:09:37 -0600 (CST) Received: from dchs6202.dchs.tas.gov.au (exch.dchs.tas.gov.au [147.109.65.6]) by valley.nettas.net (8.12.7-20030918/8.12.7) with ESMTP id i1C3ArbB027223 for ; Thu, 12 Feb 2004 14:10:53 +1100 (EST) Received: by exch.dchs.tas.gov.au with Internet Mail Service (5.5.2655.55) id <1Q0H3B03>; Thu, 12 Feb 2004 14:09:29 +1100 Date: Thu, 12 Feb 2004 14:09:22 +1100 From: Johnson Glenn Subject: FW: GFIL I/L Sender: owner-linac-eng@plato.aristotle.net To: "LINAC_ENGINEERS (E-mail)" Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2655.55) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 12 Feb 2004 14:09:22 +1100 From: Johnson Glenn Subject: FW: GFIL I/L Sender: owner-linac-eng@plato.aristotle.net To: "LINAC_ENGINEERS (E-mail)" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hi All, I'm replying re my problem below, to fill you in on the outcome. There were more symptoms than first delivered. As stated the problem was really only noticed on 6X, 600 DR. In Service Mode during beam on with the above settings the GUNI value increased from 40 and ramp to a max value of 68.70. The GUN VAC figure increased and GUNV would fluctuate as low as -10 (kV) from -16, generating GFIL / UDRS I/L. As the Dose Rate was lowered back in steps to 100 DR the effect on the GUNI was minimal. The only other teltale sign was 100 DR in most modes (X or e) was slow in coming up and couldn't be adjusted up. Exhausting most faultfinding, we eventually changed the ELECTRON GUN. Problem solved. I find that I'm having to adjust the Unservoed Dose Rate at shorter intervals to keep that 15% above. Not having changed a GUN before, is this normal ? Does the GUN require some time before stability ? Thanks to all who replied initially. It sure helps getting different advice instead of goin' round in circles as a lone Engineer. Happy Times, Glenn Johnson Radiation Engineer W P Holman Clinic > -----Original Message----- > From: Johnson Glenn > Sent: Monday, 12 January 2004 9:19 PM > To: LINAC_ENGINEERS (E-mail) > Subject: GFIL I/L > > Hi Everyone, > > Have a 23EX sn 335 (18 months old) with digital gun deck. > > We've been getting intermittent GFIL I/L. Dropping out at approx. 40 MU on > 150MU / 600 Dose Rate / Fixed 6X setup. > RT's enter to continue and you may get 3 MU and the GFIL I/L again. It can > go on like this for ten times before it comes good. > > In service mode created similar setup (but set 500 MU) and it dropped out > at 420 MU with GFIL I/L. Inspected the Gun Controller and it read "Run 2 = > OK". I thought I'd see an error ? > I override GFIL and at 200 MU I get UDRS I/L, after the dose rate dropped > off...........?? > > I have noticed that the dose rate is "slow" to come up at times, even > though the unservoed rate is approx. 15 % above. > > I've carried out the basic checks on Gun Deck - checked fil, cathode, grid > bias and pulse and reseated PCB's and cable connections. > > Any ideas or input would be greatly appreciated. My head hurts. > Thanks in advance. > > Regards, > > Glenn Johnson > Radiation Engineer > W P Holman Clinic > >  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HSY00B89WN6P0@hubbard.azu.nl>; Thu, 12 Feb 2004 11:47:31 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004021211472516727 ; Thu, 12 Feb 2004 11:47:25 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id LAA19352; Thu, 12 Feb 2004 11:48:57 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma019139; Thu, 12 Feb 2004 11:48:04 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id DAA26785 for linac-eng-list; Thu, 12 Feb 2004 03:00:20 -0600 (CST) Received: from mail14.messagelabs.com (mail14.messagelabs.com [212.125.75.19]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id DAA26781 for ; Thu, 12 Feb 2004 03:00:18 -0600 (CST) Received: (qmail 19552 invoked from network); Thu, 12 Feb 2004 08:59:44 +0000 Received: from host217-37-197-245.in-addr.btopenworld.com (HELO CHEXCHANGE1.cromwellhospital.com) (217.37.197.245) by server-11.tower-14.messagelabs.com with SMTP; Thu, 12 Feb 2004 08:59:44 +0000 Received: by CHEXCHANGE1.cromwellhospital.com with Internet Mail Service (5.5.2653.19) id <1HW1FVWP>; Thu, 12 Feb 2004 09:03:08 +0000 Date: Thu, 12 Feb 2004 09:03:07 +0000 From: Kerry Clark Subject: RE: Gun Driver power supply Sender: owner-linac-eng@plato.aristotle.net To: 'Causby Damian' , "'linac-eng@plato.aristotle.net'" Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-VirusChecked: Checked X-Env-Sender: Kerry.Clark@Cromwellhospital.com X-Msg-Ref: server-11.tower-14.messagelabs.com!1076576384!2817750 X-StarScan-Version: 5.1.15; banners=cromwellhospital.com,-,- X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 12 Feb 2004 09:03:07 +0000 From: Kerry Clark Subject: RE: Gun Driver power supply Sender: owner-linac-eng@plato.aristotle.net To: 'Causby Damian' , "'linac-eng@plato.aristotle.net'" X-VirusChecked: Checked X-Env-Sender: Kerry.Clark@Cromwellhospital.com X-Msg-Ref: server-11.tower-14.messagelabs.com!1076576384!2817750 X-StarScan-Version: 5.1.15; banners=cromwellhospital.com,-,- X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f I would have said so they are easily changed, do you have a problem with them going? Kerry Cromwell Hospital London -----Original Message----- From: Causby Damian [mailto:damian.causby@dhhs.tas.gov.au] Sent: 11 February 2004 23:41 To: 'linac-eng@plato.aristotle.net' Subject: Gun Driver power supply Good morning to List members, I have a simple question, Does anyone know why the fuses f1 f2 & f3 on the Gun deck power supply are a loose push in fit and not soldered in. Damian Causby Engineering Operations Manager Dept of Radiation Oncology Launceston General Hospital TAS, Australia ph 03 6348 7151 fax 03 6361 6371 damian.causby@dhhs.tas.gov.au ________________________________________________________________________ This e-mail has been scanned for all viruses by Star Internet. The service is powered by MessageLabs. 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For more information on a proactive anti-virus service working around the clock, around the globe, visit: http://www.star.net.uk ________________________________________________________________________  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HSZ002JE5YEIV@hubbard.azu.nl>; Thu, 12 Feb 2004 15:08:42 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004021215083729321 ; Thu, 12 Feb 2004 15:08:37 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id PAA05356; Thu, 12 Feb 2004 15:10:09 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma005231; Thu, 12 Feb 2004 15:09:30 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id GAA29455 for linac-eng-list; Thu, 12 Feb 2004 06:30:51 -0600 (CST) Received: from PHSXCHICI3.partners.org (phsxchici3.mgh.harvard.edu [132.183.118.13]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id GAA29451 for ; Thu, 12 Feb 2004 06:30:50 -0600 (CST) Received: by phsxchici3.mgh.harvard.edu with Internet Mail Service (5.5.2657.72) id <1JM2LX3B>; Thu, 12 Feb 2004 07:30:23 -0500 Date: Thu, 12 Feb 2004 07:30:03 -0500 From: "Maddox, Buford J" Subject: RE: Gun Driver power supply Sender: owner-linac-eng@plato.aristotle.net To: 'Causby Damian' , "'linac-eng@plato.aristotle.net'" Message-id: <36298D09ED1AD311B4DC0008C7F4D4E111466354@phsexch6.partners.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 12 Feb 2004 07:30:03 -0500 From: "Maddox, Buford J" Subject: RE: Gun Driver power supply Sender: owner-linac-eng@plato.aristotle.net To: 'Causby Damian' , "'linac-eng@plato.aristotle.net'" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f We have blown a few under fault conditions, and had a fault due to a loose one. A matter of choice, I think. Jerry -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Causby Damian Sent: Wednesday, February 11, 2004 6:41 PM To: 'linac-eng@plato.aristotle.net' Subject: Gun Driver power supply Good morning to List members, I have a simple question, Does anyone know why the fuses f1 f2 & f3 on the Gun deck power supply are a loose push in fit and not soldered in. Damian Causby Engineering Operations Manager Dept of Radiation Oncology Launceston General Hospital TAS, Australia ph 03 6348 7151 fax 03 6361 6371 damian.causby@dhhs.tas.gov.au  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HSZ002JV5YIIV@hubbard.azu.nl>; Thu, 12 Feb 2004 15:08:47 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004021215084022686 ; Thu, 12 Feb 2004 15:08:40 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id PAA05380; Thu, 12 Feb 2004 15:10:12 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma005233; Thu, 12 Feb 2004 15:09:32 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id FAA28979 for linac-eng-list; Thu, 12 Feb 2004 05:59:04 -0600 (CST) Received: from mail23.nhs.uk (mail23.nhs.uk [62.6.139.221]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id FAA28975 for ; Thu, 12 Feb 2004 05:59:02 -0600 (CST) Received: from [10.191.254.3] (helo=relayint1.nhs.uk) by mail23.nhs.uk with esmtp (MTC MTA) id 1ArFUG-0006q4-1d for linac-eng@plato.aristotle.net; Thu, 12 Feb 2004 11:58:32 +0000 Received: from relay.nhs.uk (194.62.42.141) by relayint1.nhs.uk (Syntegra-I1 7.0.008) id 3FB9F76601168510 for linac-eng@plato.aristotle.net; Thu, 12 Feb 2004 11:58:31 +0000 Received: from beijing.relay.grampian.scot.nhs.uk (10.251.30.7) by relay.nhs.uk (Syntegra-1 7.0.008) (authenticated as relay_grampian_scot_nhs_uk@es2002.nhs.uk) id 402B46D50001ABB1; Thu, 12 Feb 2004 11:58:31 +0000 Received: from arh-mail2.arh.grampian.scot.nhs.uk ([9.16.60.28]) by beijing.relay.grampian.scot.nhs.uk with Microsoft SMTPSVC(5.0.2195.6713) ; Thu, 12 Feb 2004 11:55:55 +0000 Received: by arh-mail2.arh.grampian.scot.nhs.uk with Internet Mail Service (5.5.2657.72) id <1TVN5VAQ>; Thu, 12 Feb 2004 11:55:30 +0000 Date: Thu, 12 Feb 2004 11:58:49 +0000 From: David.Smith@arh.grampian.scot.nhs.uk Subject: RE: Trans. Symmetry 2100 C climbing from 0 to more than 2% [Scanned By SOPHOS Anti-Virus] Sender: owner-linac-eng@plato.aristotle.net To: smange@ameritech.net Cc: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 7bit Importance: normal Precedence: bulk thread-index: AcPxXyugFo6LmefWTJWpbUSl8ZcEIw== Content-Class: urn:content-classes:message X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4927.1200 X-OriginalArrivalTime: 12 Feb 2004 11:55:55.0203 (UTC) FILETIME=[2B975130:01C3F15F] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 12 Feb 2004 11:58:49 +0000 From: David.Smith@arh.grampian.scot.nhs.uk Subject: RE: Trans. Symmetry 2100 C climbing from 0 to more than 2% [Scanned By SOPHOS Anti-Virus] Sender: owner-linac-eng@plato.aristotle.net To: smange@ameritech.net Cc: linac-eng@plato.aristotle.net Importance: normal thread-index: AcPxXyugFo6LmefWTJWpbUSl8ZcEIw== Content-Class: urn:content-classes:message X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4927.1200 X-OriginalArrivalTime: 12 Feb 2004 11:55:55.0203 (UTC) FILETIME=[2B975130:01C3F15F] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Scott, We had a similar problem except it was with radial symmetry giving EXQ1 faults. It turned out to be K1 a solid state relay not switching cleanly on the beam position servo board. A fairly common problem according to Varian. Dave > -----Original Message----- > From: Scott Mange [SMTP:smange@ameritech.net] > Sent: Wednesday, February 11, 2004 10:46 PM > To: linac-eng@plato.aristotle.net > Subject: Trans. Symmetry 2100 C climbing from 0 to more than 2% > [Scanned By SOPHOS Anti-Virus] > > Dear Engineers, > > Being a physicist I don't know how to fix this problem and need your > help. Our 2100C ser. 1743 is starting to throw EXQ2 faults (trans. > symmetry). I can be in service mode, beam on and watch the symmetry > change > from 0 to +1% or thereabouts. If the machine has not been beamed-on for a > > little while, say 30mins., the problem is worse. > > Your thoughts are greatly appreciated. > > I don't know if this is a simple fix or something for which I need to get > the water scanner out. I hate the idea of coming in this weekend but will > > if necessary. > > Thank you in advance. > > Sincerely, > Scott Mange << File: ATT129068.txt >>  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HSZ0031A6EDB8@hubbard.azu.nl>; Thu, 12 Feb 2004 15:18:15 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004021215181226145 ; Thu, 12 Feb 2004 15:18:12 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id PAA07508; Thu, 12 Feb 2004 15:19:45 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xmae07404; Thu, 12 Feb 2004 15:19:10 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id GAA29384 for linac-eng-list; Thu, 12 Feb 2004 06:25:26 -0600 (CST) Received: from NGATE01.qe2-hsc.ns.ca (ngate01.qe2-hsc.ns.ca [142.176.37.4]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id GAA29380 for ; Thu, 12 Feb 2004 06:25:24 -0600 (CST) Received: from sdc_dom-MTA by NGATE01.qe2-hsc.ns.ca with Novell_GroupWise; Thu, 12 Feb 2004 08:25:20 -0400 Date: Thu, 12 Feb 2004 08:25:06 -0400 From: Scott Purcell Subject: UDR1& 2 suring IMRT treat Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.5.1 Content-type: text/plain; charset=US-ASCII Content-disposition: inline Content-transfer-encoding: 7bit Precedence: bulk X-Guinevere: 2.0.13 ; Capital District Hea X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 12 Feb 2004 08:25:06 -0400 From: Scott Purcell Subject: UDR1& 2 suring IMRT treat Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Content-disposition: inline X-Guinevere: 2.0.13 ; Capital District Hea X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hi to all, We have a Varian C600 C2 S/N 311, it is equipped with 52 leaf MLC mark II and PV. The problem we are having is we get UDR1 & 2 during an IRMT treatment. We can prevent these interlocks by shutting off the PFS2 servo using switch 1 on the PCB. Has anyone else seen this problem and how did you fix it. Thanks in Advance Scott Scott Purcell, C.E.T Linear Accelerator Service Technologist Department of Medical Physics Nova Scotia Cancer Centre 5820 University Avenue Halifax, Nova Scotia Canada Email scott.purcell@cdha.nshealth.ca Phone: 902-473-2563 Fax: 902-473-6120 Confidentiality: This email message may contain confidential information and is intended only for the individual named. If you are not the named addressee you should not disseminate, distribute or copy this email. Please notify the sender immediately by email if you have received this email by mistake and delete this email from your system. 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If verification is required please request a hard copy version.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HSZ00IBNLY2LH@hubbard.azu.nl>; Thu, 12 Feb 2004 20:54:04 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004021220540205829 ; Thu, 12 Feb 2004 20:54:02 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id UAA28831; Thu, 12 Feb 2004 20:55:34 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma028803; Thu, 12 Feb 2004 20:55:28 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id LAA05753 for linac-eng-list; Thu, 12 Feb 2004 11:43:24 -0600 (CST) Received: from msgia.hs.uab.edu (gw5.uabmc.edu [164.111.37.252]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id LAA05748 for ; Thu, 12 Feb 2004 11:43:22 -0600 (CST) Received: from INET-MTA by msgia.hs.uab.edu with Novell_GroupWise; Thu, 12 Feb 2004 11:42:48 -0600 Date: Thu, 12 Feb 2004 11:42:36 -0600 From: Stephen Jordan Subject: 2100C C1 "VAC2" I/L Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.5.1 Content-type: text/plain; charset=US-ASCII Content-disposition: inline Content-transfer-encoding: 7bit Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 12 Feb 2004 11:42:36 -0600 From: Stephen Jordan Subject: 2100C C1 "VAC2" I/L Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Content-disposition: inline X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f I've had an intermittent VAC2 on my 2100C ser # 078 for roughly a year. Today, it has become a living, breathing fault. My question to you all is: What voltage / current do you use when Hi-Potting a 8 l/s or 20 l/s vacion pump? I have a HV supply on hand capable of just about anything, but I've not done this before. Thank you for the help! Steve Jordan UAB Rad Physics  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HT0007QR270J9@hubbard.azu.nl>; Fri, 13 Feb 2004 02:45:01 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004021302445427386 ; Fri, 13 Feb 2004 02:44:54 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id CAA01635; Fri, 13 Feb 2004 02:46:27 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma001633; Fri, 13 Feb 2004 02:46:19 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id RAA13629 for linac-eng-list; Thu, 12 Feb 2004 17:34:56 -0600 (CST) Received: from clift.nettas.net (clift.nettas.net [202.7.15.71]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id RAA13625 for ; Thu, 12 Feb 2004 17:34:53 -0600 (CST) Received: from dchs6305.dchs.tas.gov.au (dchs6305.dchs.tas.gov.au [147.109.23.26]) by clift.nettas.net (8.12.7-20030918/8.12.7) with ESMTP id i1CNcXGw014678 for ; Fri, 13 Feb 2004 10:38:33 +1100 (EST) Received: by dchs6305.dchs.tas.gov.au with Internet Mail Service (5.5.2655.55) id <1Q8ZB7KC>; Fri, 13 Feb 2004 10:34:49 +1100 Date: Fri, 13 Feb 2004 10:34:49 +1100 From: Causby Damian Subject: Gun power supply Sender: owner-linac-eng@plato.aristotle.net To: "'linac-eng@plato.aristotle.net'" Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2655.55) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 13 Feb 2004 10:34:49 +1100 From: Causby Damian Subject: Gun power supply Sender: owner-linac-eng@plato.aristotle.net To: "'linac-eng@plato.aristotle.net'" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Thanks for the replies I just don't like the loose fit of the fuse, we are getting Gfils at random about every 6 weeks only when I'm not here and the Physics guys have had to shut the machine down to clear them, I haven't been here to check for a fault code, hope I'm here when it happens next. Damian Causby Engineering Operations Manager Dept of Radiation Oncology Launceston General Hospital ph 03 6348 7151 fax 03 6361 6371  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HT10081HCELLV@hubbard.azu.nl>; Fri, 13 Feb 2004 19:23:18 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004021319225523883 ; Fri, 13 Feb 2004 19:22:55 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA00312; Fri, 13 Feb 2004 19:24:28 +0100 (MET) Received: from mail.uu.nl(131.211.16.75) by armstrong.azu.nl via smap (V1.3) id xma029146; Fri, 13 Feb 2004 19:21:59 +0100 Received: from localhost (localhost.localdomain [127.0.0.1]) by mail.uu.nl (Postfix) with ESMTP id 12C6854C3E; Fri, 13 Feb 2004 18:15:12 +0100 (CET) Received: from mail.uu.nl ([127.0.0.1]) by localhost (mail.uu.nl [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 20811-06; Fri, 13 Feb 2004 18:15:11 +0100 (CET) Received: from plato.aristotle.net (plato.aristotle.net [206.66.224.2]) by mail.uu.nl (Postfix) with ESMTP id E748754C2D; Fri, 13 Feb 2004 18:15:10 +0100 (CET) Received: by plato.aristotle.net (8.9.0/8.9.0) id JAA23368 for linac-eng-list; Fri, 13 Feb 2004 09:20:01 -0600 (CST) Received: from ns1.cancercare.on.ca (mail.cancercare.on.ca [204.225.32.6]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id JAA23358 for ; Fri, 13 Feb 2004 09:19:59 -0600 (CST) Received: from hrccex.hrcc.on.ca (hrccex.hrcc.on.ca [142.21.246.25]) by ns1.cancercare.on.ca (8.12.8/8.12.8) with ESMTP id i1DFJFNl023951; Fri, 13 Feb 2004 10:19:15 -0500 Received: by hrccex.hrcc.on.ca with Internet Mail Service (5.5.2653.19) id <15XDT9M8>; Fri, 13 Feb 2004 10:20:44 -0500 Date: Fri, 13 Feb 2004 10:20:44 -0500 From: "Lapenna, Russ" Subject: RE: Gun power supply Sender: owner-linac-eng@plato.aristotle.net To: "'Maddox, Buford J'" , 'Causby Damian' , "'linac-eng@plato.aristotle.net'" Message-id: <9C688FB52A05D51194750002B325B5F703A273A0@hrccex.hrcc.on.ca> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 13 Feb 2004 10:20:44 -0500 From: "Lapenna, Russ" Subject: RE: Gun power supply Sender: owner-linac-eng@plato.aristotle.net To: "'Maddox, Buford J'" , 'Causby Damian' , "'linac-eng@plato.aristotle.net'" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hmmmmmmmmmmmmmmmmmmm........... >Spread the legs on those >fuses for sure. >Jerry -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Causby Damian Sent: Thursday, February 12, 2004 6:35 PM To: 'linac-eng@plato.aristotle.net' Subject: Gun power supply Thanks for the replies I just don't like the loose fit of the fuse, we are getting Gfils at random about every 6 weeks only when I'm not here and the Physics guys have had to shut the machine down to clear them, I haven't been here to check for a fault code, hope I'm here when it happens next. Damian Causby Engineering Operations Manager Dept of Radiation Oncology Launceston General Hospital ph 03 6348 7151 fax 03 6361 6371 This information is directed in confidence solely to the person named above and may not otherwise be distributed, copied or disclosed. Therefore, this information should be considered strictly confidential. If you have received this email in error, please notify the sender immediately via a return email for further direction. Thank you for your assistance.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HT1009GZD44BE@hubbard.azu.nl>; Fri, 13 Feb 2004 19:38:35 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004021319382826433 ; Fri, 13 Feb 2004 19:38:28 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA06341; Fri, 13 Feb 2004 19:40:00 +0100 (MET) Received: from mail.uu.nl(131.211.16.75) by armstrong.azu.nl via smap (V1.3) id xma005608; Fri, 13 Feb 2004 19:38:42 +0100 Received: from localhost (localhost.localdomain [127.0.0.1]) by mail.uu.nl (Postfix) with ESMTP id 720B254C9D; Fri, 13 Feb 2004 18:42:02 +0100 (CET) Received: from mail.uu.nl ([127.0.0.1]) by localhost (mail.uu.nl [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 22306-05; Fri, 13 Feb 2004 18:42:02 +0100 (CET) Received: from plato.aristotle.net (plato.aristotle.net [206.66.224.2]) by mail.uu.nl (Postfix) with ESMTP id 4FDD254C98; Fri, 13 Feb 2004 18:42:01 +0100 (CET) Received: by plato.aristotle.net (8.9.0/8.9.0) id JAA23556 for linac-eng-list; Fri, 13 Feb 2004 09:34:17 -0600 (CST) Received: from 17RADLAPPC01 ([65.174.193.218]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id JAA23552 for ; Fri, 13 Feb 2004 09:34:15 -0600 (CST) Date: Fri, 13 Feb 2004 10:34:43 -0500 From: Scott Mange Subject: Trans. Symmetry 2100 C climbing from 0 to more than 2% - Update Sender: owner-linac-eng@plato.aristotle.net X-Sender: smange@mailhost.det.ameritech.net To: linac-eng@plato.aristotle.net Message-id: <5.1.0.14.2.20040213101959.00a769b0@mailhost.det.ameritech.net> MIME-version: 1.0 X-Mailer: QUALCOMM Windows Eudora Version 5.1 Content-type: MULTIPART/MIXED; BOUNDARY="Boundary_(ID_eFHF3LhkOcUf9VR8WqqYlg)"; x-avg-checked=avg-ok-4706DEC Precedence: bulk X-GCMulti: 1 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 13 Feb 2004 10:34:43 -0500 From: Scott Mange Subject: Trans. Symmetry 2100 C climbing from 0 to more than 2% - Update Sender: owner-linac-eng@plato.aristotle.net X-Sender: smange@mailhost.det.ameritech.net To: linac-eng@plato.aristotle.net X-GCMulti: 1 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f --Boundary_(ID_eFHF3LhkOcUf9VR8WqqYlg) Content-type: text/plain; format=flowed; charset=us-ascii; x-avg-checked=avg-ok-4706DEC Content-transfer-encoding: quoted-printable Dear Engineers, Let me begin with an apology. I did not mean to imply I was going to do=20 the work as I know I'm not qualified to do this particular type of=20 service. We did have service out last night and this is what we found th= at=20 I understood. The transverse symmetry reading affects all energies. Some times its=20 there, next mode up, its rock steady at 0.0. Worst I saw yesterday was=20 +1.6 although the machine did shut itself off once with an EXQ2=20 fault. Turned off the dose rate servos and the machine was running a bit= =20 fast, about 400MU/min for a set dose rate of 320. Service turned them do= wn. Got out the water phantom (not scanner). Set 20x20 at Dmax depth and mov= ed=20 the probe +/- 8cm from center to get some idea of symmetry. Absolutely=20 fine. No more than 0.35% deviation from one side to the other for the 3=20 energies we tried. Even tried the Radial direction just to make sure we=20 hadn't confused ourselves on what is transverse and radial. So the machine seems to be fine in terms of beam but the transverse=20 symmetry numbers are still off. Service noticed in the gantry stand=20 there's a couple of PCB boards with green LEDs. Apparently the ones for=20 PSA motor controls should be off unless the couch is actually moving. Bu= t!=20 the couch LEDs are lit dimmly without the couch moving. They get brighte= r=20 when the couch is in motion. Swapped some cards around and problem still= =20 exists. Suspect the problem actually resides in the gantry some place as we can=20 have a set mode with the symmetry reading off, beam off and then back on=20 with a similar value. If we re-mode the same energy, the symmetry readin= g=20 will change. All I can think is it has something to do with the things=20 moving around inside the gantry. I left at 8pm because the beam seems to be fine but the poor service guy=20 was still here. Any other insight is always appreciated. And as always, thanks for your=20 time and help. Sincerely, Scott Mange --Boundary_(ID_eFHF3LhkOcUf9VR8WqqYlg) Content-type: text/plain; x-avg-checked=avg-ok-4706DEC; x-avg=cert; charset=us-ascii Content-disposition: inline --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.581 / Virus Database: 368 - Release Date: 2/9/04 --Boundary_(ID_eFHF3LhkOcUf9VR8WqqYlg)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HT1009CQD4LE7@hubbard.azu.nl>; Fri, 13 Feb 2004 19:38:54 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004021319384514495 ; Fri, 13 Feb 2004 19:38:45 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA06462; Fri, 13 Feb 2004 19:40:17 +0100 (MET) Received: from mail.uu.nl(131.211.16.75) by armstrong.azu.nl via smap (V1.3) id xmaa05664; Fri, 13 Feb 2004 19:38:48 +0100 Received: from localhost (localhost.localdomain [127.0.0.1]) by mail.uu.nl (Postfix) with ESMTP id DB6DE54BB9; Fri, 13 Feb 2004 17:34:49 +0100 (CET) Received: from mail.uu.nl ([127.0.0.1]) by localhost (mail.uu.nl [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 18526-02; Fri, 13 Feb 2004 17:34:49 +0100 (CET) Received: from plato.aristotle.net (plato.aristotle.net [206.66.224.2]) by mail.uu.nl (Postfix) with ESMTP id BC97D54BB1; Fri, 13 Feb 2004 17:34:48 +0100 (CET) Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id IAA22386 for linac-eng-list; Fri, 13 Feb 2004 08:31:19 -0600 (CST) Received: from PHSEXCHICO.MGH.HARVARD.EDU (phsexchico.mgh.harvard.edu [132.183.126.50]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id IAA22382 for ; Fri, 13 Feb 2004 08:31:17 -0600 (CST) Received: by phsexchico.mgh.harvard.edu with Internet Mail Service (5.5.2657.72) id ; Fri, 13 Feb 2004 09:30:46 -0500 Date: Fri, 13 Feb 2004 09:30:44 -0500 From: "Maddox, Buford J" Subject: RE: Gun power supply Sender: owner-linac-eng@plato.aristotle.net To: 'Causby Damian' , "'linac-eng@plato.aristotle.net'" Message-id: <36298D09ED1AD311B4DC0008C7F4D4E111466357@phsexch6.partners.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 13 Feb 2004 09:30:44 -0500 From: "Maddox, Buford J" Subject: RE: Gun power supply Sender: owner-linac-eng@plato.aristotle.net To: 'Causby Damian' , "'linac-eng@plato.aristotle.net'" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Gfils are such a catchall, good luck. Covers, AD+ ref IC, hot deck 15v ps, crowbar sws, loose fuses are some that I have seen. Spread the legs on those fuses for sure. Jerry -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Causby Damian Sent: Thursday, February 12, 2004 6:35 PM To: 'linac-eng@plato.aristotle.net' Subject: Gun power supply Thanks for the replies I just don't like the loose fit of the fuse, we are getting Gfils at random about every 6 weeks only when I'm not here and the Physics guys have had to shut the machine down to clear them, I haven't been here to check for a fault code, hope I'm here when it happens next. Damian Causby Engineering Operations Manager Dept of Radiation Oncology Launceston General Hospital ph 03 6348 7151 fax 03 6361 6371  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HT100BQXF5UMF@hubbard.azu.nl>; Fri, 13 Feb 2004 20:22:43 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004021320224119966 ; Fri, 13 Feb 2004 20:22:41 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id UAA22152; Fri, 13 Feb 2004 20:24:14 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma019449; Fri, 13 Feb 2004 20:17:07 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id LAA00872 for linac-eng-list; Fri, 13 Feb 2004 11:29:57 -0600 (CST) Received: from PHSEXCHICO2.Partners.org (phsexchico2.partners.org [170.223.254.20]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id LAA00868 for ; Fri, 13 Feb 2004 11:29:55 -0600 (CST) Received: by phsexchico2.partners.org with Internet Mail Service (5.5.2657.72) id <167WK3AK>; Fri, 13 Feb 2004 12:29:23 -0500 Date: Fri, 13 Feb 2004 12:29:22 -0500 From: "Maddox, Buford J" Subject: RE: Trans. Symmetry 2100 C climbing from 0 to more than 2% - Upd ate Sender: owner-linac-eng@plato.aristotle.net To: 'Scott Mange' , linac-eng@plato.aristotle.net Message-id: <36298D09ED1AD311B4DC0008C7F4D4E11146635D@phsexch6.partners.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 13 Feb 2004 12:29:22 -0500 From: "Maddox, Buford J" Subject: RE: Trans. Symmetry 2100 C climbing from 0 to more than 2% - Upd ate Sender: owner-linac-eng@plato.aristotle.net To: 'Scott Mange' , linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f You could have a problem with the flattening filter not repeating its location. Very rare in my experience. I would check that the locating pin is seating well, the air solenoids are not leaking, the carrousel is not loose, etc. If it happens without gantry rotation, moding on/off, that narrows it down a lot. Moving parts in head or electronics like relays. If the symmettry is fine but you still have an interlock, then the problem sounds like it is not in the head, or even the servoes, but in the meter or interlock pcbs. False indication? You should look at larger fields also, as different servoes may have stronger effects at smaller and larger fields. jerry -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Scott Mange Sent: Friday, February 13, 2004 10:35 AM To: linac-eng@plato.aristotle.net Subject: Trans. Symmetry 2100 C climbing from 0 to more than 2% - Update Dear Engineers, Let me begin with an apology. I did not mean to imply I was going to do the work as I know I'm not qualified to do this particular type of service. We did have service out last night and this is what we found that I understood. The transverse symmetry reading affects all energies. Some times its there, next mode up, its rock steady at 0.0. Worst I saw yesterday was +1.6 although the machine did shut itself off once with an EXQ2 fault. Turned off the dose rate servos and the machine was running a bit fast, about 400MU/min for a set dose rate of 320. Service turned them down. Got out the water phantom (not scanner). Set 20x20 at Dmax depth and moved the probe +/- 8cm from center to get some idea of symmetry. Absolutely fine. No more than 0.35% deviation from one side to the other for the 3 energies we tried. Even tried the Radial direction just to make sure we hadn't confused ourselves on what is transverse and radial. So the machine seems to be fine in terms of beam but the transverse symmetry numbers are still off. Service noticed in the gantry stand there's a couple of PCB boards with green LEDs. Apparently the ones for PSA motor controls should be off unless the couch is actually moving. But! the couch LEDs are lit dimmly without the couch moving. They get brighter when the couch is in motion. Swapped some cards around and problem still exists. Suspect the problem actually resides in the gantry some place as we can have a set mode with the symmetry reading off, beam off and then back on with a similar value. If we re-mode the same energy, the symmetry reading will change. All I can think is it has something to do with the things moving around inside the gantry. I left at 8pm because the beam seems to be fine but the poor service guy was still here. Any other insight is always appreciated. And as always, thanks for your time and help. Sincerely, Scott Mange  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HT100E7MIGUMO@hubbard.azu.nl>; Fri, 13 Feb 2004 21:34:08 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004021321340605169 ; Fri, 13 Feb 2004 21:34:06 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id VAA02124; Fri, 13 Feb 2004 21:35:39 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma002081; Fri, 13 Feb 2004 21:35:34 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id MAA02018 for linac-eng-list; Fri, 13 Feb 2004 12:53:45 -0600 (CST) Received: from ftwvir01.ftw.medcity.net (mail.ftw.medcity.net [199.91.36.30]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id MAA02014 for ; Fri, 13 Feb 2004 12:53:44 -0600 (CST) Received: from 170.150.192.135 by ftwvir01.ftw.medcity.net (InterScan E-Mail VirusWall NT); Fri, 13 Feb 2004 12:52:00 -0600 Received: by ftwexcon02.hca.corpad.net with Internet Mail Service (5.5.2657.72) id <1HY0RVRK>; Fri, 13 Feb 2004 12:53:07 -0600 Date: Fri, 13 Feb 2004 12:53:00 -0600 From: Tirabassi Michael Subject: RE: Trans. Symmetry 2100 C climbing from 0 to more than 2% - Upd ate Sender: owner-linac-eng@plato.aristotle.net To: 'Scott Mange' , "Linac list (E-mail)" Message-id: <39A90AC123CB9D428821E2BC273E73CD01F866B2@ftwex03.hca.corpad.net> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 13 Feb 2004 12:53:00 -0600 From: Tirabassi Michael Subject: RE: Trans. Symmetry 2100 C climbing from 0 to more than 2% - Upd ate Sender: owner-linac-eng@plato.aristotle.net To: 'Scott Mange' , "Linac list (E-mail)" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Don't know how old your 2100 is but three things come to mind that have happened to me in the past. All on a CL1800 #046 1. loose guide set screws - guide shifting around in solenoid. Output verses rotation, asymmetry problems 2. loose transverse steering coil mounting screws, coils are visible on each side of primary collimator 3. Carrousel pin not fully seating in carrousel hole due to flaky pin air cylinder. Carrousel would stop, pin would drop but not fully, foil fault would clear but carrousel would be out of position by 3-5 mm. Transverse symmetry way out according to beam analyzer. Servos working like a dog to correct. EXQT faults. All energies affected. Caught this one during morning warm up & output checks one day before patient treatments. Just a few possibilities. Mike T. RCC -----Original Message----- From: Scott Mange [mailto:smange@ameritech.net] Sent: Friday, February 13, 2004 9:35 AM To: linac-eng@plato.aristotle.net Subject: Trans. Symmetry 2100 C climbing from 0 to more than 2% - Update Dear Engineers, Let me begin with an apology. I did not mean to imply I was going to do the work as I know I'm not qualified to do this particular type of service. We did have service out last night and this is what we found that I understood. The transverse symmetry reading affects all energies. Some times its there, next mode up, its rock steady at 0.0. Worst I saw yesterday was +1.6 although the machine did shut itself off once with an EXQ2 fault. Turned off the dose rate servos and the machine was running a bit fast, about 400MU/min for a set dose rate of 320. Service turned them down. Got out the water phantom (not scanner). Set 20x20 at Dmax depth and moved the probe +/- 8cm from center to get some idea of symmetry. Absolutely fine. No more than 0.35% deviation from one side to the other for the 3 energies we tried. Even tried the Radial direction just to make sure we hadn't confused ourselves on what is transverse and radial. So the machine seems to be fine in terms of beam but the transverse symmetry numbers are still off. Service noticed in the gantry stand there's a couple of PCB boards with green LEDs. Apparently the ones for PSA motor controls should be off unless the couch is actually moving. But! the couch LEDs are lit dimmly without the couch moving. They get brighter when the couch is in motion. Swapped some cards around and problem still exists. Suspect the problem actually resides in the gantry some place as we can have a set mode with the symmetry reading off, beam off and then back on with a similar value. If we re-mode the same energy, the symmetry reading will change. All I can think is it has something to do with the things moving around inside the gantry. I left at 8pm because the beam seems to be fine but the poor service guy was still here. Any other insight is always appreciated. And as always, thanks for your time and help. Sincerely, Scott Mange  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HT8006KEKU8XS@hubbard.azu.nl>; Tue, 17 Feb 2004 17:08:33 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004021717083123912 ; Tue, 17 Feb 2004 17:08:31 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id RAA23476; Tue, 17 Feb 2004 17:10:08 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma023374; Tue, 17 Feb 2004 17:09:31 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id IAA16334 for linac-eng-list; Tue, 17 Feb 2004 08:17:37 -0600 (CST) Received: from mta6.srv.hcvlny.cv.net (mta6.srv.hcvlny.cv.net [167.206.5.72]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id IAA16330 for ; Tue, 17 Feb 2004 08:17:35 -0600 (CST) Received: from MYLAP (ool-435295de.dyn.optonline.net [67.82.149.222]) by mta6.srv.hcvlny.cv.net (iPlanet Messaging Server 5.2 HotFix 1.16 (built May 14 2003)) with SMTP id <0HT800F1JFPHC4@mta6.srv.hcvlny.cv.net> for linac-eng@plato.aristotle.net; Tue, 17 Feb 2004 09:17:43 -0500 (EST) Date: Tue, 17 Feb 2004 09:17:23 -0500 From: vincent Terribile Subject: Electa MLC projection lamp Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <000e01c3f560$c367a140$0402a8c0@MYLAP> MIME-version: 1.0 X-Mailer: Microsoft Outlook Express 6.00.2800.1158 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_SndrWUfoNVdztcyvVWDp3A)" Precedence: bulk X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-MSMail-priority: Normal X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 *** EOOH *** Date: Tue, 17 Feb 2004 09:17:23 -0500 From: vincent Terribile Subject: Electa MLC projection lamp Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-MSMail-priority: Normal X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 This is a multi-part message in MIME format. --Boundary_(ID_SndrWUfoNVdztcyvVWDp3A) Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 7BIT Can any one refer me to a second source for the projection lamp in the MLC. thank you Vinny T --Boundary_(ID_SndrWUfoNVdztcyvVWDp3A) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: 7BIT
Can any one refer me to a second source for the projection lamp in the MLC.
 
thank you
Vinny T
--Boundary_(ID_SndrWUfoNVdztcyvVWDp3A)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HT800J2UYWSV0@hubbard.azu.nl>; Tue, 17 Feb 2004 22:12:30 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004021722122713291 ; Tue, 17 Feb 2004 22:12:27 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id WAA01820; Tue, 17 Feb 2004 22:14:04 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma001762; Tue, 17 Feb 2004 22:13:53 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id NAA20439 for linac-eng-list; Tue, 17 Feb 2004 13:10:37 -0600 (CST) Received: from mail.tju.edu (fw-tr16.tju.edu [147.140.233.16]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id NAA20435 for ; Tue, 17 Feb 2004 13:10:35 -0600 (CST) Received: from hpmail1.tju.edu by mail.tju.edu with ESMTP; Tue, 17 Feb 2004 14:09:56 -0500 Received: from localhost (openmail@localhost) by hpmail1.tju.edu (8.9.3 (PHNE_24419)/8.9.3) with ESMTP id OAA05263; Tue, 17 Feb 2004 14:09:56 -0500 (EST) Date: Tue, 17 Feb 2004 14:09:56 -0500 From: Frank Spitz Subject: HT CON D Inhibits ELEKTA In-reply-to: <71A7A8BA33E3D511AF5E00034797029B1053537C@HERMES> Sender: owner-linac-eng@plato.aristotle.net To: Graham.Chalmers@uhb.nhs.uk Cc: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 Content-type: text/plain; charset=US-ASCII Content-disposition: inline; Modification-Date="Tue, 17 Feb 2004 14:09:56 -0500"; Creation-Date="Tue, 17 Feb 2004 14:06:33 -0500" Content-transfer-encoding: 7bit Precedence: bulk X-OpenMail-Hops: 1 X-Bad-Content-Type: text/plain; charset=US-ASCII X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 17 Feb 2004 14:09:56 -0500 From: Frank Spitz Subject: HT CON D Inhibits ELEKTA In-reply-to: <71A7A8BA33E3D511AF5E00034797029B1053537C@HERMES> Sender: owner-linac-eng@plato.aristotle.net To: Graham.Chalmers@uhb.nhs.uk Cc: linac-eng@plato.aristotle.net Content-disposition: inline; Modification-Date="Tue, 17 Feb 2004 14:09:56 -0500"; Creation-Date="Tue, 17 Feb 2004 14:06:33 -0500" X-OpenMail-Hops: 1 X-Bad-Content-Type: text/plain; charset=US-ASCII X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Graham, I suspect your problem may be with a faulty HT interlock switch, which is not fully activated or shows some resistance when closed. Both the Filter Carousel and the Primary Collimator (twin port collimator) have HT interlock switches that complete the HT interlock chain when the filter and/or collimator are locked in place at beam center. The switches are electrically wired in series. See the Elekta system diagram for the "HT Contactor System". The SW13 SW12 interlock assures the beam is never enabled between filter or collimator positions. SW12 "Primary Collimator" and" SW13 Secondary Filter are located on the Collimator assembly. See the SL parts book for location. Adjustment of SW13 is possible through the wedge opening. To get to SW13 one of the secondary filters most is removed and the open carousel hole positioned over the switch. Adjustment of SW12 may be more difficult and require loosening or removing the ion chamber. In any case replacing the switches is much easier with the head removed. The reason switching energies might help is different energies use different filter and primary collimator positions. You may be able to isolate which switch is at fault by determining which filter or collimator positions are engaged when the fault occurs. My fault required a minor adjustment to the screw which presses against the SW13 activator. My fault would only occur with one filter position (used by e10,e12 and e15) The problem was intermittent sometimes moving of this filter then back on would clear the fault. Good Luck Frank Spitz Clinical Engineer Thomas Jefferson University Hospital 215 955 5993  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HTB0046K53K20@hubbard.azu.nl>; Thu, 19 Feb 2004 02:21:22 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004021902211915974 ; Thu, 19 Feb 2004 02:21:19 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id CAA21760; Thu, 19 Feb 2004 02:22:57 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma021718; Thu, 19 Feb 2004 02:22:36 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id RAA18157 for linac-eng-list; Wed, 18 Feb 2004 17:24:29 -0600 (CST) Received: from sccimhc02.asp.att.net (sccimhc02.asp.att.net [63.240.76.164]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id RAA18153 for ; Wed, 18 Feb 2004 17:24:27 -0600 (CST) Received: from pavilion (12-220-101-76.client.insightbb.com[12.220.101.76]) by sccimhc02.asp.att.net (sccimhc02) with SMTP id <20040218232356im2009u0c5e> (Authid: jrarnold@insightbb.com); Wed, 18 Feb 2004 23:23:56 +0000 Date: Wed, 18 Feb 2004 18:35:14 +0000 From: Joel Arnold Subject: BMAG Faults. Sender: owner-linac-eng@plato.aristotle.net To: LINAC Message-id: <003101c3f64d$f403a4a0$6401a8c0@insightbb.com.insightbb.com.r31.insightbb.com> MIME-version: 1.0 X-Mailer: Microsoft Outlook Express 6.00.2800.1158 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_MAxh61Yngcb+O292WFH6KA)" Precedence: bulk X-MSMail-Priority: Normal X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 *** EOOH *** Date: Wed, 18 Feb 2004 18:35:14 +0000 From: Joel Arnold Subject: BMAG Faults. Sender: owner-linac-eng@plato.aristotle.net To: LINAC X-MSMail-Priority: Normal X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 This is a multi-part message in MIME format. --Boundary_(ID_MAxh61Yngcb+O292WFH6KA) Content-type: text/plain; charset=Windows-1252 Content-transfer-encoding: quoted-printable All, 21EX 2 years old. I just started getting bmag faults. One the first part of the week, = three today. They clear and the treatment continues. I know low temp = is the most common cause. These are mid day. If it is intermittent, = what processes have you used to find the problem? Thanks Joel Arnold jrarnold@health-partners.org --Boundary_(ID_MAxh61Yngcb+O292WFH6KA) Content-type: text/html; charset=Windows-1252 Content-transfer-encoding: quoted-printable
All,
21EX 2 years old.
I just started getting bmag = faults.  One the=20 first part of the week, three today.  They clear and the treatment=20 continues.  I know low temp is the most common cause.  These = are mid=20 day.  If it is intermittent, what processes have you used to find = the=20 problem?
Thanks
Joel Arnold
jrarnold@health-partners.org=
--Boundary_(ID_MAxh61Yngcb+O292WFH6KA)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HTC000I0CXI3Q@hubbard.azu.nl>; Thu, 19 Feb 2004 18:08:08 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004021918080614526 ; Thu, 19 Feb 2004 18:08:06 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA27355; Thu, 19 Feb 2004 18:09:44 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma027292; Thu, 19 Feb 2004 18:09:33 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id IAA25720 for linac-eng-list; Thu, 19 Feb 2004 08:32:34 -0600 (CST) Received: from PHSEXCHICO.MGH.HARVARD.EDU (phsexchico.mgh.harvard.edu [132.183.126.50]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id IAA25716 for ; Thu, 19 Feb 2004 08:32:33 -0600 (CST) Received: by phsexchico.mgh.harvard.edu with Internet Mail Service (5.5.2657.72) id <167TTVSC>; Thu, 19 Feb 2004 09:32:02 -0500 Date: Thu, 19 Feb 2004 09:31:54 -0500 From: "Maddox, Buford J" Subject: RE: BMAG Faults. Sender: owner-linac-eng@plato.aristotle.net To: 'Joel Arnold' , LINAC Message-id: <36298D09ED1AD311B4DC0008C7F4D4E111466363@phsexch6.partners.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_7Thrm1+tf9SS1eJY9c6rJA)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 19 Feb 2004 09:31:54 -0500 From: "Maddox, Buford J" Subject: RE: BMAG Faults. Sender: owner-linac-eng@plato.aristotle.net To: 'Joel Arnold' , LINAC X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_7Thrm1+tf9SS1eJY9c6rJA) Content-type: text/plain; charset=iso-8859-1 Rotate the gantry and watch the ps v. We have found some shorts to various grounded parts where the cable rubs on a sharp edge. The v changes when the load resistance changes. A poor connection is another cause, it ratchets loose as it heats and cools. Years ago we had to solder a lot of the crimped connections. The back of the ps should also be checked for loose connections. I have been fooled by the low temp as you said. Embarrassing when you realize that you adjusted the interlock, but the AFC also doesn't work, and you find the low temp. good luck Jerry -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Joel Arnold Sent: Wednesday, February 18, 2004 1:35 PM To: LINAC Subject: BMAG Faults. All, 21EX 2 years old. I just started getting bmag faults. One the first part of the week, three today. They clear and the treatment continues. I know low temp is the most common cause. These are mid day. If it is intermittent, what processes have you used to find the problem? Thanks Joel Arnold jrarnold@health-partners.org --Boundary_(ID_7Thrm1+tf9SS1eJY9c6rJA) Content-type: text/html; charset=iso-8859-1
Rotate the gantry and watch the ps v.  We have found some shorts to various grounded parts where the cable rubs on a sharp edge. The v changes when the load resistance changes.  A poor connection is another cause, it ratchets loose as it heats and cools.  Years ago we had to solder a lot of the crimped connections.  The back of the ps should also be checked for loose connections.
I have been fooled by the low temp as you said.  Embarrassing when you realize that you adjusted the interlock, but the AFC also doesn't work, and you find the low temp.  good luck
Jerry
-----Original Message-----
From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Joel Arnold
Sent: Wednesday, February 18, 2004 1:35 PM
To: LINAC
Subject: BMAG Faults.

All,
21EX 2 years old.
I just started getting bmag faults.  One the first part of the week, three today.  They clear and the treatment continues.  I know low temp is the most common cause.  These are mid day.  If it is intermittent, what processes have you used to find the problem?
Thanks
Joel Arnold
--Boundary_(ID_7Thrm1+tf9SS1eJY9c6rJA)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HTC001NJHHDYI@hubbard.azu.nl>; Thu, 19 Feb 2004 19:46:26 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004021919462423999 ; Thu, 19 Feb 2004 19:46:24 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA07283; Thu, 19 Feb 2004 19:48:02 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma007246; Thu, 19 Feb 2004 19:47:55 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id KAA28265 for linac-eng-list; Thu, 19 Feb 2004 10:44:04 -0600 (CST) Received: from titan.lhsc.on.ca (titan.lhsc.on.ca [142.158.2.20]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id KAA28261 for ; Thu, 19 Feb 2004 10:44:02 -0600 (CST) Received: from mail.lrcc.on.ca (mail.lrcc.on.ca [142.158.120.242]) by titan.lhsc.on.ca (8.11.7p1+Sun/8.11.7) with SMTP id i1JGhVo25525 for ; Thu, 19 Feb 2004 11:43:31 -0500 (EST) Received: by mail.lrcc.on.ca(Lotus SMTP MTA v4.6.7 (934.1 12-30-1999)) id 85256E3F.005BDDFA ; Thu, 19 Feb 2004 11:43:26 -0500 Date: Thu, 19 Feb 2004 11:43:21 -0500 From: Randy.McVittie@lrcc.on.ca Subject: DETAIL DRAWING Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <85256E3F.005BDC39.00@mail.lrcc.on.ca> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Content-disposition: inline Precedence: bulk X-Lotus-FromDomain: LRCC X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 19 Feb 2004 11:43:21 -0500 From: Randy.McVittie@lrcc.on.ca Subject: DETAIL DRAWING Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Content-disposition: inline X-Lotus-FromDomain: LRCC X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Can anyone help out with a drawing for a connector on a Varian Machine: It is J57 on the Gantry Patch Panel for an old C1 vintage machine Goes from the Gantry patch panel to just about everywhere in the Gantry BURNDY connector 0151 G6JF24-48PWE I have tried the Internet, but it looks like Burndy doesn't exist anymore Thanks Randy  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HTC002PCKGXZ4@hubbard.azu.nl>; Thu, 19 Feb 2004 20:50:59 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004021920505631499 ; Thu, 19 Feb 2004 20:50:56 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id UAA13481; Thu, 19 Feb 2004 20:52:34 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma013446; Thu, 19 Feb 2004 20:52:25 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id MAA29627 for linac-eng-list; Thu, 19 Feb 2004 12:00:22 -0600 (CST) Received: from sccrmhc12.comcast.net (sccrmhc12.comcast.net [204.127.202.56]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id MAA29623 for ; Thu, 19 Feb 2004 12:00:20 -0600 (CST) Received: from [192.168.1.100] (c-67-173-16-78.client.comcast.net[67.173.16.78]) by comcast.net (sccrmhc12) with SMTP id <2004021917594801200fl5d7e>; Thu, 19 Feb 2004 17:59:48 +0000 Date: Thu, 19 Feb 2004 11:59:33 -0600 From: Rich Kimball Subject: Primus Main Thyratron Sender: owner-linac-eng@plato.aristotle.net To: Linac Engineer List Message-id: <5F77D222-6305-11D8-BE3A-000393BB5024@comcast.net> MIME-version: 1.0 X-Mailer: Apple Mail (2.612) Content-type: text/plain; format=flowed; charset=US-ASCII Content-transfer-encoding: 7bit Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 19 Feb 2004 11:59:33 -0600 From: Rich Kimball Subject: Primus Main Thyratron Sender: owner-linac-eng@plato.aristotle.net To: Linac Engineer List X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hi guys, Does anyone remember the tube type number for the Primus main thyratron. I thought I had it written down but can't find it. TIA. Happy trails, Richard  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HTC004J8NTFFM@hubbard.azu.nl>; Thu, 19 Feb 2004 22:03:16 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004021922031013698 ; Thu, 19 Feb 2004 22:03:10 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id WAA20880; Thu, 19 Feb 2004 22:04:49 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma020848; Thu, 19 Feb 2004 22:04:13 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id MAA00600 for linac-eng-list; Thu, 19 Feb 2004 12:47:46 -0600 (CST) Received: from mailm.adhb.govt.nz (smtp.akphp.co.nz [210.54.227.226]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id MAA00590 for ; Thu, 19 Feb 2004 12:47:43 -0600 (CST) Received: from exchange02.ahsl.co.nz (Not Verified[10.30.2.23]) by mailm.adhb.govt.nz with NetIQ MailMarshal (v5.5.4.17) id ; Fri, 20 Feb 2004 07:53:49 +1300 Received: by exchange02.ahsl.co.nz with Internet Mail Service (5.5.2653.19) id ; Fri, 20 Feb 2004 07:46:59 +1300 Date: Fri, 20 Feb 2004 07:46:47 +1300 From: Craig Pearce Subject: RE: DETAIL DRAWING Sender: owner-linac-eng@plato.aristotle.net To: "'Randy.McVittie@lrcc.on.ca'" Cc: "'linac-eng@plato.aristotle.net'" Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: text/plain; CHARSET=US-ASCII Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 20 Feb 2004 07:46:47 +1300 From: Craig Pearce Subject: RE: DETAIL DRAWING Sender: owner-linac-eng@plato.aristotle.net To: "'Randy.McVittie@lrcc.on.ca'" Cc: "'linac-eng@plato.aristotle.net'" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Randy That side of the FCI connector business has been sold to Soriau. http://www.souriau.com This series of connectors is a commercial version of a military connector. As to which one, it was a long time a go that I researched all that information. Regards Craig Pearce  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HTC005LCPIL5I@hubbard.azu.nl>; Thu, 19 Feb 2004 22:39:59 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004021922395620599 ; Thu, 19 Feb 2004 22:39:56 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id WAA24379; Thu, 19 Feb 2004 22:41:34 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma024358; Thu, 19 Feb 2004 22:41:06 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id NAA02226 for linac-eng-list; Thu, 19 Feb 2004 13:54:24 -0600 (CST) Received: from imo-d21.mx.aol.com (imo-d21.mx.aol.com [205.188.144.207]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id NAA02222 for ; Thu, 19 Feb 2004 13:54:22 -0600 (CST) Received: from SMcna39074@aol.com by imo-d21.mx.aol.com (mail_out_v36_r4.14.) id j.155.2dde670a (15888); Thu, 19 Feb 2004 14:53:47 -0500 (EST) Received: from aol.com (mow-d23.webmail.aol.com [205.188.139.164]) by air-id08.mx.aol.com (v98.6) with ESMTP id MAILINID83-3e104035144b22c; Thu, 19 Feb 2004 14:53:47 -0500 Date: Thu, 19 Feb 2004 14:53:47 -0500 From: SMcna39074@aol.com Subject: Re: BMAG Faults. Sender: owner-linac-eng@plato.aristotle.net To: jrarnold@insightbb.com Cc: linac-eng@plato.aristotle.net Message-id: <78DA3465.4054EA22.0C0A0915@aol.com> MIME-version: 1.0 X-Mailer: Atlas Mailer 2.0 Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 8bit Precedence: bulk X-AOL-IP: 207.154.79.102 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 19 Feb 2004 14:53:47 -0500 From: SMcna39074@aol.com Subject: Re: BMAG Faults. Sender: owner-linac-eng@plato.aristotle.net To: jrarnold@insightbb.com Cc: linac-eng@plato.aristotle.net X-AOL-IP: 207.154.79.102 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f One source of BMAG faults at our site is due to the movement of the BMAG cables as they pass through the cutout between the gantry windup and the upper gantry. The cutout is beveled in the wrong direction and the cardboard fish paper snags. The BMAG cables are soft insulation and they tear, which then shorts one of the cables to chassis ground--BMAG I/L, which clears with gantry rotation. Our solution, beyond replacing the BMAG cables, is to install a hard teflon/plastic shim to the gantry cutout to prevent chaffing and to tie down the BMAG cables. Our cheap shim is the plastic ring that is left over from an empty 5 gallon bottled water jug seal and attached with FixAll RTV glue. Stan Cancer Center of Santa Barbara  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HTC00634SN1N1@hubbard.azu.nl>; Thu, 19 Feb 2004 23:47:26 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004021923472421970 ; Thu, 19 Feb 2004 23:47:24 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id XAA01046; Thu, 19 Feb 2004 23:49:02 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma001038; Thu, 19 Feb 2004 23:48:41 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id OAA02746 for linac-eng-list; Thu, 19 Feb 2004 14:23:44 -0600 (CST) Received: from imo-d05.mx.aol.com (imo-d05.mx.aol.com [205.188.157.37]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id OAA02742 for ; Thu, 19 Feb 2004 14:23:43 -0600 (CST) Received: from BMic644@aol.com by imo-d05.mx.aol.com (mail_out_v36_r4.14.) id i.4d.3b242388 (16100); Thu, 19 Feb 2004 15:23:07 -0500 (EST) Received: from aol.com (mow-m19.webmail.aol.com [64.12.180.135]) by air-id11.mx.aol.com (v98.6) with ESMTP id MAILINID114-3ee440351b2b45; Thu, 19 Feb 2004 15:23:07 -0500 Date: Thu, 19 Feb 2004 15:23:07 -0500 From: BMic644@aol.com Subject: Re: Primus Main Thyratron Sender: owner-linac-eng@plato.aristotle.net To: richardkimball3@comcast.net Cc: linac-eng@plato.aristotle.net Message-id: <47324B15.4A78B312.00149F71@aol.com> MIME-version: 1.0 X-Mailer: Atlas Mailer 2.0 Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 8bit Precedence: bulk X-AOL-IP: 63.147.236.10 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 19 Feb 2004 15:23:07 -0500 From: BMic644@aol.com Subject: Re: Primus Main Thyratron Sender: owner-linac-eng@plato.aristotle.net To: richardkimball3@comcast.net Cc: linac-eng@plato.aristotle.net X-AOL-IP: 63.147.236.10 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Richard, Original Thy is a Triton TX-1154. Litton has a replacement for the Triton. It is an L-4904. This one seems to last a little longer. Don't have exact numbers yet on longevity. Barry Michael 973 322 5443 SBMC/Livingston Technologies  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HTD00C9S51YD6@hubbard.azu.nl>; Fri, 20 Feb 2004 04:15:35 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004022004153309389 ; Fri, 20 Feb 2004 04:15:33 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id EAA17642; Fri, 20 Feb 2004 04:17:11 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma017634; Fri, 20 Feb 2004 04:17:07 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id TAA10118 for linac-eng-list; Thu, 19 Feb 2004 19:24:22 -0600 (CST) Received: from sccrmhc13.comcast.net (sccrmhc13.comcast.net [204.127.202.64]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id TAA10114 for ; Thu, 19 Feb 2004 19:24:20 -0600 (CST) Received: from [192.168.1.100] (c-67-173-16-78.client.comcast.net[67.173.16.78]) by comcast.net (sccrmhc13) with SMTP id <2004022001234801600nhum0e>; Fri, 20 Feb 2004 01:23:48 +0000 Date: Thu, 19 Feb 2004 19:23:33 -0600 From: Rich Kimball Subject: Overwhelming response for info Sender: owner-linac-eng@plato.aristotle.net To: Linac Engineer List Cc: Rich Kimball Message-id: <65FB7539-6343-11D8-B960-000393BB5024@comcast.net> MIME-version: 1.0 X-Mailer: Apple Mail (2.612) Content-type: text/plain; format=flowed; charset=US-ASCII Content-transfer-encoding: 7bit Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 19 Feb 2004 19:23:33 -0600 From: Rich Kimball Subject: Overwhelming response for info Sender: owner-linac-eng@plato.aristotle.net To: Linac Engineer List Cc: Rich Kimball X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Wow...thanks all for the update on the Primus tube. Much appreciated! Happy trails, Richard  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HTD0037TSL5NI@hubbard.azu.nl>; Fri, 20 Feb 2004 12:44:03 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004022012435328008 ; Fri, 20 Feb 2004 12:43:53 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id MAA20975; Fri, 20 Feb 2004 12:45:31 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma020901; Fri, 20 Feb 2004 12:44:57 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id DAA16834 for linac-eng-list; Fri, 20 Feb 2004 03:57:35 -0600 (CST) Received: from mail23.nhs.uk (mail23.nhs.uk [62.6.139.221]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id DAA16830 for ; Fri, 20 Feb 2004 03:57:33 -0600 (CST) Received: from [10.191.254.3] (helo=relayint2.nhs.uk) by mail23.nhs.uk with esmtp (MTC MTA) id 1Au7P4-0005o8-Hk for linac-eng@plato.aristotle.net; Fri, 20 Feb 2004 09:57:02 +0000 Received: from relay.nhs.uk (194.62.42.142) by relayint2.nhs.uk (Syntegra-I2 7.0.008) id 4030AF9B00131DD5 for linac-eng@plato.aristotle.net; Fri, 20 Feb 2004 09:57:02 +0000 Received: from orion.pldn.scot.nhs.uk (10.250.0.100) by relay.nhs.uk (Syntegra-2 7.0.008) (authenticated as romulus_lhb_scot_nhs_uk@es2002.nhs.uk) id 4034BA5F0004B6EA for linac-eng@plato.aristotle.net; Fri, 20 Feb 2004 09:57:02 +0000 Received: from isd_nt03.luht.scot.nhs.uk (unverified) by orion.pldn.scot.nhs.uk (Content Technologies SMTPRS 4.3.10) with ESMTP id for ; Fri, 20 Feb 2004 09:59:12 +0000 Received: by ISD_NT03 with Internet Mail Service (5.5.2653.19) id ; Fri, 20 Feb 2004 09:55:04 +0000 Date: Fri, 20 Feb 2004 09:55:00 +0000 From: "Electronics, Oncology" Subject: MOD I\L jumper setting Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <17F7A6C89585D4118E23009027E7701802E6E9EC@ISD_NT03> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 20 Feb 2004 09:55:00 +0000 From: "Electronics, Oncology" Subject: MOD I\L jumper setting Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f 600 C/D Hello world, I'm wondering what jumper setting people have set on their fault conditioning board.( i.e MOD interlock trip level) I understand that Varian tend to leave them set to 32 but i would appreciate any information regarding how other centres deal with this and what reasons have made you select your particular value. Thank you for any information. William Ronaldson. ********************************************************************** The information contained in this message may be confidential or legally privileged and is intended for the addressee only, If you have received this message in error or there are any problems please notify the originator immediately. The unauthorised use, disclosure, copying or alteration of this message is strictly forbidden. **********************************************************************  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HTE00JAWATA5E@hubbard.azu.nl>; Fri, 20 Feb 2004 19:17:36 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004022019173308889 ; Fri, 20 Feb 2004 19:17:33 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA21333; Fri, 20 Feb 2004 19:19:12 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma021275; Fri, 20 Feb 2004 19:18:47 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id KAA21759 for linac-eng-list; Fri, 20 Feb 2004 10:08:07 -0600 (CST) Received: from mail23.nhs.uk (mail23.nhs.uk [62.6.139.221]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id KAA21755 for ; Fri, 20 Feb 2004 10:08:05 -0600 (CST) Received: from [10.191.254.3] (helo=relayint2.nhs.uk) by mail23.nhs.uk with esmtp (MTC MTA) id 1AuDBe-0006mj-DD for linac-eng@plato.aristotle.net; Fri, 20 Feb 2004 16:07:34 +0000 Received: from relay.nhs.uk (194.62.42.144) by relayint2.nhs.uk (Syntegra-I2 7.0.008) id 4030AF9B0015E840 for linac-eng@plato.aristotle.net; Fri, 20 Feb 2004 16:07:34 +0000 Received: from beijing.relay.grampian.scot.nhs.uk (10.251.30.7) by relay.nhs.uk (Syntegra-4 7.0.008) (authenticated as relay_grampian_scot_nhs_uk@es2002.nhs.uk) id 4035EE9D0002AA46 for linac-eng@plato.aristotle.net; Fri, 20 Feb 2004 16:07:34 +0000 Received: from mail pickup service by beijing.relay.grampian.scot.nhs.uk with Microsoft SMTPSVC; Fri, 20 Feb 2004 16:05:00 +0000 Received: from relay.nhs.uk ([194.62.42.123]) by beijing.relay.grampian.scot.nhs.uk with Microsoft SMTPSVC(5.0.2195.6713) ; Fri, 20 Feb 2004 11:35:35 +0000 Received: from mail13.nhs.uk (62.6.139.209) by relay.nhs.uk (Syntegra-1 7.0.008) id 4035ED8700002D18; Fri, 20 Feb 2004 11:37:34 +0000 Received: from plato.aristotle.net ([206.66.224.2]) by mail13.nhs.uk with esmtp (MTC MTA) id 1Au8yL-0005U6-HT; Fri, 20 Feb 2004 11:37:33 +0000 Received: by plato.aristotle.net (8.9.0/8.9.0) id DAA16834 for linac-eng-list; Fri, 20 Feb 2004 03:57:35 -0600 (CST) Received: from mail23.nhs.uk (mail23.nhs.uk [62.6.139.221]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id DAA16830 for ; Fri, 20 Feb 2004 03:57:33 -0600 (CST) Received: from [10.191.254.3] (helo=relayint2.nhs.uk) by mail23.nhs.uk with esmtp (MTC MTA) id 1Au7P4-0005o8-Hk for linac-eng@plato.aristotle.net; Fri, 20 Feb 2004 09:57:02 +0000 Received: from relay.nhs.uk (194.62.42.142) by relayint2.nhs.uk (Syntegra-I2 7.0.008) id 4030AF9B00131DD5 for linac-eng@plato.aristotle.net; Fri, 20 Feb 2004 09:57:02 +0000 Received: from orion.pldn.scot.nhs.uk (10.250.0.100) by relay.nhs.uk (Syntegra-2 7.0.008) (authenticated as romulus_lhb_scot_nhs_uk@es2002.nhs.uk) id 4034BA5F0004B6EA for linac-eng@plato.aristotle.net; Fri, 20 Feb 2004 09:57:02 +0000 Received: from isd_nt03.luht.scot.nhs.uk (unverified) by orion.pldn.scot.nhs.uk (Content Technologies SMTPRS 4.3.10) with ESMTP id for ; Fri, 20 Feb 2004 09:59:12 +0000 Received: by ISD_NT03 with Internet Mail Service (5.5.2653.19) id ; Fri, 20 Feb 2004 09:55:04 +0000 Date: Fri, 20 Feb 2004 09:55:00 +0000 From: "Electronics, Oncology" Subject: MOD I\L jumper setting Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <17F7A6C89585D4118E23009027E7701802E6E9EC@ISD_NT03> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-OriginalArrivalTime: 20 Feb 2004 11:35:35.0500 (UTC) FILETIME=[A7E568C0:01C3F7A5] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 20 Feb 2004 09:55:00 +0000 From: "Electronics, Oncology" Subject: MOD I\L jumper setting Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-OriginalArrivalTime: 20 Feb 2004 11:35:35.0500 (UTC) FILETIME=[A7E568C0:01C3F7A5] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f 600 C/D Hello world, I'm wondering what jumper setting people have set on their fault conditioning board.( i.e MOD interlock trip level) I understand that Varian tend to leave them set to 32 but i would appreciate any information regarding how other centres deal with this and what reasons have made you select your particular value. Thank you for any information. William Ronaldson. ********************************************************************** The information contained in this message may be confidential or legally privileged and is intended for the addressee only, If you have received this message in error or there are any problems please notify the originator immediately. The unauthorised use, disclosure, copying or alteration of this message is strictly forbidden. **********************************************************************  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HTE006E9WOX2T@hubbard.azu.nl>; Sat, 21 Feb 2004 03:10:10 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004022103100911346 ; Sat, 21 Feb 2004 03:10:09 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id DAA18642; Sat, 21 Feb 2004 03:11:47 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma018636; Sat, 21 Feb 2004 03:11:36 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id SAA02259 for linac-eng-list; Fri, 20 Feb 2004 18:05:01 -0600 (CST) Received: from phsornt422.or.providence.org (phsor-nat2.providence.org [170.220.2.14]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id SAA02249 for ; Fri, 20 Feb 2004 18:04:59 -0600 (CST) Received: from PickupDirectory by phsornt422.or.providence.org with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2653.13) id 17GYB737; Fri, 20 Feb 2004 16:04:29 -0800 Received: from phsorcon06.or.providence.org ([170.220.78.187]) by phsornt422.or.providence.org with Microsoft SMTPSVC(5.0.2195.5329); Fri, 20 Feb 2004 16:04:28 -0800 Received: from phsormsg02.or.providence.org ([170.220.75.191]) by phsorcon06.or.providence.org with Microsoft SMTPSVC(5.0.2195.6713); Fri, 20 Feb 2004 16:04:27 -0800 Date: Fri, 20 Feb 2004 16:04:27 -0800 From: Gary.Stober@providence.org Subject: Pardon me, this is a test Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 8bit Importance: normal Precedence: bulk X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4927.1200 Content-Class: urn:content-classes:message Thread-Topic: Pardon me, this is a test thread-index: AcP4DkVsQtQrSC5WRx2FY7JuQMYpgg== X-OriginalArrivalTime: 21 Feb 2004 00:04:27.0979 (UTC) FILETIME=[45BD99B0:01C3F80E] X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id SAA02250 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 20 Feb 2004 16:04:27 -0800 From: Gary.Stober@providence.org Subject: Pardon me, this is a test Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Importance: normal X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4927.1200 Content-Class: urn:content-classes:message Thread-Topic: Pardon me, this is a test thread-index: AcP4DkVsQtQrSC5WRx2FY7JuQMYpgg== X-OriginalArrivalTime: 21 Feb 2004 00:04:27.0979 (UTC) FILETIME=[45BD99B0:01C3F80E] X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id SAA02250 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f - Gary Stober Clinical Engineering Providence St. Vincent Medical Center 9205 SW Barnes Road Portland, OR 97225 (503) 216-2988 (503) 216-2972 (Fax) mailto:Gary.Stober@providence.org DISCLAIMER: This message is intended for the sole use of the individual to whom it is addressed, and may contain information that is privileged, confidential and exempt from disclosure under applicable law. If you are not the addressee you are hereby notified that you may not use, copy, disclose, or distribute to anyone the message or any information contained in the message. If you have received this message in error, please immediately advise the sender by reply email and delete this message.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HTJ00FAHI2MPI@hubbard.azu.nl>; Mon, 23 Feb 2004 14:42:24 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004022314422110606 ; Mon, 23 Feb 2004 14:42:21 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id OAA29854; Mon, 23 Feb 2004 14:44:01 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma029628; Mon, 23 Feb 2004 14:43:03 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id FAA11876 for linac-eng-list; Mon, 23 Feb 2004 05:57:34 -0600 (CST) Received: from mail22.nhs.uk (mail22.nhs.uk [62.6.139.218]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id FAA11872 for ; Mon, 23 Feb 2004 05:57:32 -0600 (CST) Received: from [10.191.254.3] (helo=relayint1.nhs.uk) by mail22.nhs.uk with esmtp (MTC MTA) id 1AvEhp-0004Si-PQ for linac-eng@plato.aristotle.net; Mon, 23 Feb 2004 11:57:01 +0000 Received: from relay.nhs.uk (194.62.42.142) by relayint1.nhs.uk (Syntegra-I1 7.0.008) id 4039DF370000A253 for linac-eng@plato.aristotle.net; Mon, 23 Feb 2004 11:57:01 +0000 Received: from esscdc2.essa.nhs.uk (195.107.101.37) by relay.nhs.uk (Syntegra-2 7.0.008) (authenticated as smtp_pah_nhs_uk@es2002.nhs.uk) id 4035EDE4000AEC1D for linac-eng@plato.aristotle.net; Mon, 23 Feb 2004 11:57:01 +0000 Received: by esscdc2.essa.nhs.uk with XWall v3.28 ; Mon, 23 Feb 2004 11:59:52 +0000 Date: Mon, 23 Feb 2004 11:55:52 +0000 From: "Coley Chris (RDE) Essex Rivers" Subject: Printer Sender: owner-linac-eng@plato.aristotle.net To: "linac-eng@plato.aristotle.net" Message-id: <37B4C3952191274895976CE20DF5821D062A6EE9@nemail.essa.nhs.uk> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_QkhZurmcNAtl9q2krZv4Vw)" Precedence: bulk X-Assembled-By: XWall v3.28 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 23 Feb 2004 11:55:52 +0000 From: "Coley Chris (RDE) Essex Rivers" Subject: Printer Sender: owner-linac-eng@plato.aristotle.net To: "linac-eng@plato.aristotle.net" X-Assembled-By: XWall v3.28 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This is a multi part message in MIME format. --Boundary_(ID_QkhZurmcNAtl9q2krZv4Vw) Content-type: text/plain; charset=us-ascii Content-transfer-encoding: quoted-printable Hi everyone Does anybody know what laser printer Varian now ships with their Vision system? Our Xerox C55 has had its day. We don't need a Codonics printer, just something that prints out reasonable copies of our images. Regards Chris Coley (Technician) Essex County Hospital This e-mail is confidential and privileged. If you are not the intended = recipient please accept our apologies; please do not disclose, copy or = distribute information in this e-mail or take any action in reliance on = its contents: to do so is strictly prohibited and may be unlawful. = Please inform us that this message has gone astray before deleting it. = Thank you for your co-operation. --Boundary_(ID_QkhZurmcNAtl9q2krZv4Vw) Content-type: text/html; charset=us-ascii Content-transfer-encoding: quoted-printable Printer

Hi everyone

Does anybody know what laser printer = Varian now ships with their Vision system?  Our Xerox C55 has had its = day.  We don't need a Codonics printer, just something that prints = out reasonable copies of our images.

Regards

Chris Coley (Technician)

Essex County Hospital

This e-mail is confidential and privileged. If you are not the intended = recipient please accept our apologies; please do not disclose, copy or = distribute information in this e-mail or take any action in reliance on = its contents: to do so is strictly prohibited and may be unlawful. = Please inform us that this message has gone astray before deleting it. = Thank you for your co-operation.
--Boundary_(ID_QkhZurmcNAtl9q2krZv4Vw)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HTJ009Q3Z91U1@hubbard.azu.nl>; Mon, 23 Feb 2004 20:53:26 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004022320532428056 ; Mon, 23 Feb 2004 20:53:24 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id UAA29525; Mon, 23 Feb 2004 20:55:04 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma029456; Mon, 23 Feb 2004 20:54:29 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id LAA17632 for linac-eng-list; Mon, 23 Feb 2004 11:41:24 -0600 (CST) Received: from 17RADLAPPC01 ([65.174.193.139]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id LAA17628 for ; Mon, 23 Feb 2004 11:41:21 -0600 (CST) Date: Mon, 23 Feb 2004 12:41:58 -0500 From: Scott Mange Subject: Symmetry problem update Sender: owner-linac-eng@plato.aristotle.net X-Sender: smange@mailhost.cle.ameritech.net To: linac-eng@plato.aristotle.net Message-id: <5.1.0.14.2.20040223123438.00a88120@mailhost.cle.ameritech.net> MIME-version: 1.0 X-Mailer: QUALCOMM Windows Eudora Version 5.1 Content-type: MULTIPART/MIXED; BOUNDARY="Boundary_(ID_sMRGN8WxWWGVhCoMXyFBoA)"; x-avg-checked=avg-ok-67754537 Precedence: bulk X-GCMulti: 1 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 23 Feb 2004 12:41:58 -0500 From: Scott Mange Subject: Symmetry problem update Sender: owner-linac-eng@plato.aristotle.net X-Sender: smange@mailhost.cle.ameritech.net To: linac-eng@plato.aristotle.net X-GCMulti: 1 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f --Boundary_(ID_sMRGN8WxWWGVhCoMXyFBoA) Content-type: text/plain; format=flowed; charset=us-ascii; x-avg-checked=avg-ok-67754537 Content-transfer-encoding: 8bit Dear Engineers, You may recall my problem(s). Our 2100 was reporting symmetry problems averaging about 1% even though in water measurements showed things were working well. I suspected there was a short somewhere having to do with the couch as some LEDs were glowing faintly that should have been out. Also thought it may be a problem with the cables going through the gantry stand. I think our gremlin has been found and eradicated although it may be too soon to speak. Our machine went down 3 days in a row last week due to a number of different things, blown circuit boards, MLC carriage faults, very odd stuff. Last Thursday, the engineer called my home at 9:30pm saying the machine was inoperable even though it worked when I'd left him at 6pm. He ended up replacing the "motherboard" which probably makes more sense to you than it does to me. Since the replacement, our gremlins seem to have moved. Symmetry is rock solid again, green LEDs are now out, and I've got a good feeling about it. For those of you who asked to know how it turned out, there ya go. Thanks for everyone's help with this. Sincerely Yours, Scott Mange --Boundary_(ID_sMRGN8WxWWGVhCoMXyFBoA) Content-type: text/plain; x-avg-checked=avg-ok-67754537; x-avg=cert; charset=us-ascii Content-disposition: inline --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.593 / Virus Database: 376 - Release Date: 2/20/04 --Boundary_(ID_sMRGN8WxWWGVhCoMXyFBoA)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HTL00F9KEDTND@hubbard.azu.nl>; Tue, 24 Feb 2004 15:17:57 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004022415175226516 ; Tue, 24 Feb 2004 15:17:52 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id PAA18229; Tue, 24 Feb 2004 15:19:33 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma018129; Tue, 24 Feb 2004 15:18:59 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id GAA17523 for linac-eng-list; Tue, 24 Feb 2004 06:30:30 -0600 (CST) Received: from imsm032.netvigator.com ([218.102.21.33]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id GAA17519 for ; Tue, 24 Feb 2004 06:30:28 -0600 (CST) Received: (qmail 31697 invoked from network); Tue, 24 Feb 2004 12:29:56 +0000 Received: from n219077023214.netvigator.com (HELO kimyeung) (219.77.23.214) by imsm032.netvigator.com with SMTP; Tue, 24 Feb 2004 12:29:56 +0000 Date: Tue, 24 Feb 2004 20:18:14 +0800 From: Kim Yeung Subject: Re: Looking for connector Sender: owner-linac-eng@plato.aristotle.net To: Linac Message-id: <00e701c3fad0$4722a420$0202a8c0@kimyeung> MIME-version: 1.0 X-Mailer: Microsoft Outlook Express 6.00.2800.1158 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_2kr+2xbmnqP5QYoGYIPtpw)" Precedence: bulk X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 *** EOOH *** Date: Tue, 24 Feb 2004 20:18:14 +0800 From: Kim Yeung Subject: Re: Looking for connector Sender: owner-linac-eng@plato.aristotle.net To: Linac X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 This is a multi-part message in MIME format. --Boundary_(ID_2kr+2xbmnqP5QYoGYIPtpw) Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: quoted-printable Hi Colleagues, Could anyone advise the source of the following connector? BURNDY UT02-24-37 SVDET The connector was used in Philips BV29 X-ray machine. Thanks in advance. Kim Yeung --Boundary_(ID_2kr+2xbmnqP5QYoGYIPtpw) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: quoted-printable
Hi Colleagues,
 
Could anyone advise the source of the = following=20 connector?
 
        = BURNDY=20 UT02-24-37 SVDET
 
The connector was used in Philips BV29 = X-ray=20 machine.
 
Thanks in advance.
 
Kim Yeung
--Boundary_(ID_2kr+2xbmnqP5QYoGYIPtpw)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HTL00FIOEKYPG@hubbard.azu.nl> for jkok@sims-ms-daemon; Tue, 24 Feb 2004 15:22:21 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004022415220927085 for ; Tue, 24 Feb 2004 15:22:09 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id PAA19180 for ; Tue, 24 Feb 2004 15:23:49 +0100 (MET) Received: from smtp.jiscmail.ac.uk(130.246.192.48) by armstrong.azu.nl via smap (V1.3) id xma019014; Tue, 24 Feb 2004 15:23:06 +0100 Received: from LISTSERV.JISCMAIL.AC.UK (jiscmail.ac.uk) by smtp.jiscmail.ac.uk (LSMTP for Windows NT v1.1b) with SMTP id <9.000CE7CD@smtp.jiscmail.ac.uk>; Tue, 24 Feb 2004 14:21:21 +0000 Received: from JISCMAIL.AC.UK by JISCMAIL.AC.UK (LISTSERV-TCP/IP release 1.8e) with spool id 33334954 for MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK; Tue, 24 Feb 2004 14:21:21 +0000 Received: from 130.246.192.52 by JISCMAIL.AC.UK (SMTPL release 1.0i) with TCP; Tue, 24 Feb 2004 14:21:21 +0000 (GMT) Received: from mail22.nhs.uk (mail22.nhs.uk [62.6.139.218]) by kili.jiscmail.ac.uk (8.12.8/8.12.8) with ESMTP id i1OELJfl025599 for ; Tue, 24 Feb 2004 14:21:19 +0000 (GMT) Received: from [10.191.254.3] (helo=relayint2.nhs.uk) by mail22.nhs.uk with esmtp (MTC MTA) id 1AvdQw-0003Ju-Ka for MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK; Tue, 24 Feb 2004 14:21:14 +0000 Received: from relay.nhs.uk (194.62.42.142) by relayint2.nhs.uk (Syntegra-I2 7.0.008) id 4039DF710006B8AA for MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK; Tue, 24 Feb 2004 14:21:14 +0000 Received: from liam.citrix.scarney.northy.nhs.uk (194.227.120.13) by relay.nhs.uk (Syntegra-2 7.0.008) id 403A02C400086351 for MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK; Tue, 24 Feb 2004 14:21:14 +0000 Received: by liam with Internet Mail Service (5.5.2650.21) id ; Tue, 24 Feb 2004 14:19:01 +0000 Date: Tue, 24 Feb 2004 14:18:59 +0000 From: Peter Howells Subject: Re: IR(ME)R Guidance Notes Sender: Discussion amongst academic Medical Physics in the UK To: MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK Reply-to: Discussion amongst academic Medical Physics in the UK Message-id: <4EAF6D4C18D9384492E6395AF94D81CB2BDC58@liam> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2650.21) Content-type: text/plain; CHARSET=US-ASCII Precedence: list X-RAL-MFrom: X-RAL-Connect: X-Scanned-By: MIMEDefang 2.39 *** EOOH *** Date: Tue, 24 Feb 2004 14:18:59 +0000 From: Peter Howells Subject: Re: IR(ME)R Guidance Notes Sender: Discussion amongst academic Medical Physics in the UK To: MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK Reply-to: Discussion amongst academic Medical Physics in the UK X-RAL-MFrom: X-RAL-Connect: X-Scanned-By: MIMEDefang 2.39 I typed "Radiation" in the "Search this site" box, selected "This Site" in the drop down box next to it, and clicked "Go". Of the 133 "interesting" hits, the IR(ME)R stuff is the first. Has anyone else found any useful keywords with which to search the DH site? Peter Howells Physicist & Radiation Protection Advisor Scarborough Hospital Tel: 01723 342622 Fax: 01723 342167 -----Original Message----- From: Sargood Adrian (Royal Devon and Exeter Healthcare Trust) [mailto:Adrian.Sargood@RDEHC-TR.SWEST.NHS.UK] Sent: Tuesday, February 24, 2004 9:55 AM To: MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK Subject: Re: IR(ME)R Guidance Notes How on earth did you find this? Would to useful to know to access other information. Adrian Sargood Dr Adrian Sargood Director Medical Physics & Clinical Engineering Royal Devon & Exeter Hospital Barrack Road, Exeter, EX2 5DW. Tel 01392 402126 Fax 01392 402123 -----Original Message----- From: Peter Howells [SMTP:peter.howells@ACUTE.SNEY.NHS.UK] Sent: Monday, February 23, 2004 5:04 PM To: MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK Subject: IR(ME)R Guidance Notes The new URL on the new DH website for the IR(ME)R Guidelines is: http://www.dh.gov.uk/assetRoot/04/05/78/38/04057838.pdf Have fun. Peter Howells Physicist & Radiation Protection Advisor Scarborough Hospital Tel: 01723 342622 Fax: 01723 342167  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HTL0025FKVAQ6@hubbard.azu.nl>; Tue, 24 Feb 2004 17:38:00 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004022417375728603 ; Tue, 24 Feb 2004 17:37:57 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id RAA17105; Tue, 24 Feb 2004 17:39:38 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma017072; Tue, 24 Feb 2004 17:39:09 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id IAA20887 for linac-eng-list; Tue, 24 Feb 2004 08:39:37 -0600 (CST) Received: from ismssclu1.umcaz.edu (smtp.umcaz.edu [198.60.159.10]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id IAA20883 for ; Tue, 24 Feb 2004 08:39:35 -0600 (CST) Received: from xchange2k.umcaz.edu ([170.87.50.78]) by ismssclu1 with InterScan Messaging Security Suite; Tue, 24 Feb 2004 07:39:04 -0700 Date: Tue, 24 Feb 2004 07:39:03 -0700 From: "Watters, Dan" Subject: Siemens ZXT Table Switches Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <9AE191E1E625364CA06663EA67520859246CE0@xchange2k> MIME-version: 1.0 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_6v9zbYVAT7jNaS2r/oGMYA)" Precedence: bulk X-MimeOLE: Produced By Microsoft Exchange V6.0.6487.1 content-class: urn:content-classes:message Thread-Topic: Siemens ZXT Table Switches Thread-Index: AcP64/IqBhgTIKy+TtqdYNcmAQkFaw== X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 24 Feb 2004 07:39:03 -0700 From: "Watters, Dan" Subject: Siemens ZXT Table Switches Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-MimeOLE: Produced By Microsoft Exchange V6.0.6487.1 content-class: urn:content-classes:message Thread-Topic: Siemens ZXT Table Switches Thread-Index: AcP64/IqBhgTIKy+TtqdYNcmAQkFaw== X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This is a multi-part message in MIME format. --Boundary_(ID_6v9zbYVAT7jNaS2r/oGMYA) Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: quoted-printable Does anyone out there have a source for the white plastic paddles that = attach to the switches on the table side controls on the ZXT table? = I've run out of these fragile little buggers. =20 Thanks in advance, =20 Dan Watters University Medical Center Tucson, AZ. --Boundary_(ID_6v9zbYVAT7jNaS2r/oGMYA) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: quoted-printable
Does = anyone out=20 there have a source for the white plastic paddles that attach to the = switches on=20 the table side controls on the ZXT table?  I've run out of these = fragile=20 little buggers.
 
Thanks = in=20 advance,
 
Dan=20 Watters
University Medical=20 Center
Tucson,=20 AZ.
--Boundary_(ID_6v9zbYVAT7jNaS2r/oGMYA)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HTL004O4N7MJK@hubbard.azu.nl>; Tue, 24 Feb 2004 18:28:39 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004022418283426923 ; Tue, 24 Feb 2004 18:28:34 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA23912; Tue, 24 Feb 2004 18:30:14 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma023853; Tue, 24 Feb 2004 18:30:01 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id JAA22379 for linac-eng-list; Tue, 24 Feb 2004 09:29:57 -0600 (CST) Received: from silver_spring.mrccnet.com (e4.c6b7d1.client.atlantech.net [209.183.198.228]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id JAA22375 for ; Tue, 24 Feb 2004 09:29:55 -0600 (CST) Received: by silver_spring.mrccnet.com with Internet Mail Service (5.5.2653.19) id <1YZ4W63P>; Tue, 24 Feb 2004 10:28:13 -0500 Date: Tue, 24 Feb 2004 10:28:13 -0500 From: Phil Shoop Subject: Computers In Close Proximity To The Modulator Sender: owner-linac-eng@plato.aristotle.net To: "'Linac-eng@plato.aristotle.net'" Message-id: <530DF454AD28D511A9FF0002B30A190D3DACAB@silver_spring.mrccnet.com> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 24 Feb 2004 10:28:13 -0500 From: Phil Shoop Subject: Computers In Close Proximity To The Modulator Sender: owner-linac-eng@plato.aristotle.net To: "'Linac-eng@plato.aristotle.net'" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Good day all. We are opening a new center soon and the plans call for putting the modulator for a Varian 21EX in a seperate closet. They also want to put all our computer servers in the same closet. Impac server, PortalVision server etc as well as the network switch, router etc. Does anyone know the effects of putting computer equipment in close proximity to the modulator. We're talking within 3 feet (its a small room). Personally, I don't think its a good idea but I will need some more info to change the plans other than gut instinct. Phil Shoop Maryland Regional Cancer Care Silver Spring MD. E-mail: PJShoop@mrccnet.com The PHI (Protected Health Information) contained in this FAX/Email is HIGHLY CONFIDENTIAL. It is intended for the exclusive use of the addressee. It is to be used only to aid in providing specific healthcare services to this patient. Any other use is a violation of Federal Law (HIPAA) and will be reported as such.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HTL005OJO7KDI@hubbard.azu.nl>; Tue, 24 Feb 2004 18:50:10 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004022418500709129 ; Tue, 24 Feb 2004 18:50:07 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA26198; Tue, 24 Feb 2004 18:51:47 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma026163; Tue, 24 Feb 2004 18:51:35 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id JAA23019 for linac-eng-list; Tue, 24 Feb 2004 09:54:00 -0600 (CST) Received: from PHSEXCHICO2.Partners.org (phsexchico2.partners.org [170.223.254.20]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id JAA23012 for ; Tue, 24 Feb 2004 09:53:59 -0600 (CST) Received: by phsexchico2.partners.org with Internet Mail Service (5.5.2657.72) id ; Tue, 24 Feb 2004 10:53:28 -0500 Date: Tue, 24 Feb 2004 10:53:26 -0500 From: "Maddox, Buford J" Subject: RE: Symmetry problem update Sender: owner-linac-eng@plato.aristotle.net To: 'Scott Mange' , linac-eng@plato.aristotle.net Message-id: <36298D09ED1AD311B4DC0008C7F4D4E111466376@phsexch6.partners.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 24 Feb 2004 10:53:26 -0500 From: "Maddox, Buford J" Subject: RE: Symmetry problem update Sender: owner-linac-eng@plato.aristotle.net To: 'Scott Mange' , linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Sounds like the motherboard had developed a track between several points among the five layers. I have heard of this happening, never had the pleasure. It is a big worry when you change/solder parts on this board. Anyone else had gremlins like this on this pcb? Have I been lucky? Mostly have replaced drivers for couch clutches and brakes when a wire shorted to ground, especially during testing. -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Scott Mange Sent: Monday, February 23, 2004 12:42 PM To: linac-eng@plato.aristotle.net Subject: Symmetry problem update Dear Engineers, You may recall my problem(s). Our 2100 was reporting symmetry problems averaging about 1% even though in water measurements showed things were working well. I suspected there was a short somewhere having to do with the couch as some LEDs were glowing faintly that should have been out. Also thought it may be a problem with the cables going through the gantry stand. I think our gremlin has been found and eradicated although it may be too soon to speak. Our machine went down 3 days in a row last week due to a number of different things, blown circuit boards, MLC carriage faults, very odd stuff. Last Thursday, the engineer called my home at 9:30pm saying the machine was inoperable even though it worked when I'd left him at 6pm. He ended up replacing the "motherboard" which probably makes more sense to you than it does to me. Since the replacement, our gremlins seem to have moved. Symmetry is rock solid again, green LEDs are now out, and I've got a good feeling about it. For those of you who asked to know how it turned out, there ya go. Thanks for everyone's help with this. Sincerely Yours, Scott Mange  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HTL0070DQC5JW@hubbard.azu.nl>; Tue, 24 Feb 2004 19:36:06 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004022419360511151 ; Tue, 24 Feb 2004 19:36:05 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA00731; Tue, 24 Feb 2004 19:37:45 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma000709; Tue, 24 Feb 2004 19:37:24 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id KAA25632 for linac-eng-list; Tue, 24 Feb 2004 10:59:10 -0600 (CST) Received: from EXCHCLUSTER.wth.org (mailout.wth.org [216.79.64.34]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id KAA25628 for ; Tue, 24 Feb 2004 10:59:09 -0600 (CST) Received: by exchcluster.wth.org with Internet Mail Service (5.5.2656.59) id <1YDL4YTT>; Tue, 24 Feb 2004 10:58:41 -0600 Date: Tue, 24 Feb 2004 10:58:39 -0600 From: "Turner, Guy" Subject: RE: Computers In Close Proximity To The Modulator Sender: owner-linac-eng@plato.aristotle.net To: 'Phil Shoop' , "'Linac-eng@plato.aristotle.net'" Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2656.59) Content-type: text/plain; CHARSET=US-ASCII Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 24 Feb 2004 10:58:39 -0600 From: "Turner, Guy" Subject: RE: Computers In Close Proximity To The Modulator Sender: owner-linac-eng@plato.aristotle.net To: 'Phil Shoop' , "'Linac-eng@plato.aristotle.net'" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Your gut is correct, but if anything but common sense is required to convince the powers-that-be that this is a bad idea you are in trouble. Placing sensitive network equipment such as switches and routers, and magnetic media, as in hard drives, in close proximity to a massive electromagnetic pulse generator like the modulator is insane. All of the network equipment specs that I am aware of require that the equipment be placed on a dedicated electric circuit because they are sensitive to noise spikes. If they are that sensitive placing them in the same tiny room as the modulator falls squarely in the "BAD IDEA" (patent pending) category. Guy -----Original Message----- From: Phil Shoop [mailto:PJShoop@mrccnet.com] Sent: Tuesday, February 24, 2004 9:28 AM To: 'Linac-eng@plato.aristotle.net' Subject: Computers In Close Proximity To The Modulator Good day all. We are opening a new center soon and the plans call for putting the modulator for a Varian 21EX in a seperate closet. They also want to put all our computer servers in the same closet. Impac server, PortalVision server etc as well as the network switch, router etc. Does anyone know the effects of putting computer equipment in close proximity to the modulator. We're talking within 3 feet (its a small room). Personally, I don't think its a good idea but I will need some more info to change the plans other than gut instinct. Phil Shoop Maryland Regional Cancer Care Silver Spring MD. E-mail: PJShoop@mrccnet.com The PHI (Protected Health Information) contained in this FAX/Email is HIGHLY CONFIDENTIAL. It is intended for the exclusive use of the addressee. It is to be used only to aid in providing specific healthcare services to this patient. Any other use is a violation of Federal Law (HIPAA) and will be reported as such.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HTL007Q3SE6VA@hubbard.azu.nl>; Tue, 24 Feb 2004 20:20:32 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004022420203021811 ; Tue, 24 Feb 2004 20:20:30 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id UAA05062; Tue, 24 Feb 2004 20:22:09 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xmaa05049; Tue, 24 Feb 2004 20:21:54 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id LAA26623 for linac-eng-list; Tue, 24 Feb 2004 11:24:45 -0600 (CST) Received: from mail21.nhs.uk (mail21.nhs.uk [62.6.139.215]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id LAA26619 for ; Tue, 24 Feb 2004 11:24:43 -0600 (CST) Received: from [10.191.254.3] (helo=relayint1.nhs.uk) by mail21.nhs.uk with esmtp (MTC MTA) id 1AvgI1-0001wX-8t for Linac-eng@plato.aristotle.net; Tue, 24 Feb 2004 17:24:13 +0000 Received: from relay.nhs.uk (194.62.42.141) by relayint1.nhs.uk (Syntegra-I1 7.0.008) id 4039DF370007E332 for Linac-eng@plato.aristotle.net; Tue, 24 Feb 2004 17:24:13 +0000 Received: from mercury.University-b.wmids.nhs.uk (193.240.116.176) by relay.nhs.uk (Syntegra-1 7.0.008) (authenticated as smtp_uhb_nhs_uk@es2002.nhs.uk) id 403B69CC00015BB1; Tue, 24 Feb 2004 17:24:13 +0000 Received: by MERCURY with Internet Mail Service (5.5.2653.19) id ; Tue, 24 Feb 2004 17:24:12 +0000 Date: Tue, 24 Feb 2004 17:22:27 +0000 From: Graham Chalmers Subject: RE: Computers In Close Proximity To The Modulator Sender: owner-linac-eng@plato.aristotle.net To: 'Phil Shoop' , "'Linac-eng@plato.aristotle.net'" Message-id: <71A7A8BA33E3D511AF5E00034797029B10535399@HERMES> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_K06aJlkmlIT+DBOs+UAU7g)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 24 Feb 2004 17:22:27 +0000 From: Graham Chalmers Subject: RE: Computers In Close Proximity To The Modulator Sender: owner-linac-eng@plato.aristotle.net To: 'Phil Shoop' , "'Linac-eng@plato.aristotle.net'" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_K06aJlkmlIT+DBOs+UAU7g) Content-type: text/plain; CHARSET=US-ASCII Dear Phil My gut feeling would be as yours. A modulator is a noisy piece of equipment. It may be that Varian's modulator is EMC compliant so it may not be a big issue but even so if you do get any HT breakdown etc it may well interfere with the computers etc. What is Varian's advice, as they will know their modulator best? With best wishes Graham Chalmers Graham Chalmers Radiotherapy Physics University Hospital Birmingham NHS Trust Birmingham B15 2TH 0121-627-2266 DISCLAIMER: This e-mail contains proprietary information some or all of which may be confidential or legally privileged. It is for the exclusive use of the intended recipient(s) only. If an addressing or transmission error has misdirected this e-mail and you are not the intended recipient(s), please notify the author by replying to this e-mail. If you are not the intended recipient you must not use, disclose, distribute, copy, print, or rely on this e-mail, as this may be unlawful. -----Original Message----- From: Phil Shoop [mailto:PJShoop@mrccnet.com] Sent: 24 February 2004 15:28 To: 'Linac-eng@plato.aristotle.net' Subject: Computers In Close Proximity To The Modulator Good day all. We are opening a new center soon and the plans call for putting the modulator for a Varian 21EX in a seperate closet. They also want to put all our computer servers in the same closet. Impac server, PortalVision server etc as well as the network switch, router etc. Does anyone know the effects of putting computer equipment in close proximity to the modulator. We're talking within 3 feet (its a small room). Personally, I don't think its a good idea but I will need some more info to change the plans other than gut instinct. Phil Shoop Maryland Regional Cancer Care Silver Spring MD. E-mail: PJShoop@mrccnet.com The PHI (Protected Health Information) contained in this FAX/Email is HIGHLY CONFIDENTIAL. It is intended for the exclusive use of the addressee. It is to be used only to aid in providing specific healthcare services to this patient. Any other use is a violation of Federal Law (HIPAA) and will be reported as such. DISCLAIMER: This e-mail contains proprietary information some or all of which may be confidential or legally privileged. It is for the exclusive use of the intended recipient(s) only. If an addressing or transmission error has misdirected this e-mail and you are not the intended recipient(s), please notify the author by replying to this e-mail. If you are not the intended recipient you must not use, disclose, distribute, copy, print, or rely on this e-mail, as this may be unlawful. --Boundary_(ID_K06aJlkmlIT+DBOs+UAU7g) Content-type: text/html Content-transfer-encoding: quoted-printable RE: Computers In Close Proximity To The Modulator

Dear Phil

My gut feeling would be as yours. A modulator is a = noisy piece of equipment. It may be that Varian's modulator is EMC = compliant so it may not be a big issue but even so if you do get any HT = breakdown etc it may well interfere with the computers etc. What is = Varian's advice, as they will know their modulator best?

With best wishes
 
Graham Chalmers
 
 

Graham Chalmers

Radiotherapy Physics

University Hospital Birmingham NHS Trust

Birmingham B15 2TH

0121-627-2266

 
 
 
 
DISCLAIMER: This e-mail contains proprietary = information some or all of which may be confidential or legally = privileged. It is for the exclusive use of the intended recipient(s) = only. If an addressing or transmission error has misdirected this = e-mail and you are not the intended recipient(s), please notify the = author by replying to this e-mail. If you are not the intended = recipient you must not use, disclose, distribute, copy, print, or rely = on this e-mail, as this may be unlawful.

-----Original Message-----
From: Phil Shoop [mailto:PJShoop@mrccnet.com] =
Sent: 24 February 2004 15:28
To: 'Linac-eng@plato.aristotle.net'
Subject: Computers In Close Proximity To The = Modulator

Good day all.  We are opening a new center soon = and the plans call for
putting the modulator for a Varian 21EX in a = seperate closet.  They also
want to put all our computer servers in the same = closet.  Impac server,
PortalVision server etc as well as the network = switch, router etc.

Does anyone know the effects of putting computer = equipment in close
proximity to the modulator. We're talking within 3 = feet (its a small room).
Personally, I don't think its a good idea but I will = need some more info to
change the plans other than gut instinct.

Phil Shoop
Maryland Regional Cancer Care
Silver Spring MD.

E-mail: PJShoop@mrccnet.com

The PHI (Protected Health Information) contained in = this
FAX/Email is HIGHLY CONFIDENTIAL.  It is = intended for the
exclusive use of the addressee.  It is to be = used only to aid
in providing specific healthcare services to this = patient. 
Any other use is a violation of Federal Law (HIPAA) = and will
be reported as such.

DISCLAIMER: This e-mail contains proprietary = information some or all of which may be confidential or legally = privileged. It is for the exclusive use of the intended recipient(s) = only. If an addressing or transmission error has misdirected this = e-mail and you are not the intended recipient(s), please notify the = author by replying to this e-mail. If you are not the intended = recipient you must not use, disclose, distribute, copy, print, or rely = on this e-mail, as this may be unlawful.

--Boundary_(ID_K06aJlkmlIT+DBOs+UAU7g)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HTM00G5M1RR7K@hubbard.azu.nl>; Tue, 24 Feb 2004 23:43:04 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004022423430323624 ; Tue, 24 Feb 2004 23:43:03 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id XAA24643; Tue, 24 Feb 2004 23:44:43 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma024613; Tue, 24 Feb 2004 23:44:29 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id OAA03406 for linac-eng-list; Tue, 24 Feb 2004 14:58:56 -0600 (CST) Received: from web25106.mail.ukl.yahoo.com (web25106.mail.ukl.yahoo.com [217.12.10.54]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id OAA03402 for ; Tue, 24 Feb 2004 14:58:54 -0600 (CST) Received: from [203.109.249.137] by web25106.mail.ukl.yahoo.com via HTTP; Tue, 24 Feb 2004 20:58:23 +0000 (GMT) Date: Tue, 24 Feb 2004 20:58:23 +0000 (GMT) From: =?iso-8859-1?q?pankaj=20roy?= Subject: Re: Computers In Close Proximity To The Modulator In-reply-to: <530DF454AD28D511A9FF0002B30A190D3DACAB@silver_spring.mrccnet.com> Sender: owner-linac-eng@plato.aristotle.net To: Phil Shoop , linac-eng@plato.aristotle.net Message-id: <20040224205823.72814.qmail@web25106.mail.ukl.yahoo.com> MIME-version: 1.0 Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 8bit Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 24 Feb 2004 20:58:23 +0000 (GMT) From: =?iso-8859-1?q?pankaj=20roy?= Subject: Re: Computers In Close Proximity To The Modulator In-reply-to: <530DF454AD28D511A9FF0002B30A190D3DACAB@silver_spring.mrccnet.com> Sender: owner-linac-eng@plato.aristotle.net To: Phil Shoop , linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hello Phil, Its absolutely bad planning. Your gut feeling is perfectly alright. A "gut feeling" comes out of "experience" only. And "experience" could be defined as a SUM TOTAL of "facts" gathered over a period of time in a HUMAN's MEMORY. So, -----measure and plot some EMI values in existing modulator rooms. Get the authorities to see the graphs, and let it be plain and transparent. Bets Regards, Pankaj Roy --- Phil Shoop wrote: > Good day all. We are opening a new center soon and > the plans call for > putting the modulator for a Varian 21EX in a > seperate closet. They also > want to put all our computer servers in the same > closet. Impac server, > PortalVision server etc as well as the network > switch, router etc. > > Does anyone know the effects of putting computer > equipment in close > proximity to the modulator. We're talking within 3 > feet (its a small room). > Personally, I don't think its a good idea but I will > need some more info to > change the plans other than gut instinct. > > Phil Shoop > Maryland Regional Cancer Care > Silver Spring MD. > > E-mail: PJShoop@mrccnet.com > > The PHI (Protected Health Information) contained in > this > FAX/Email is HIGHLY CONFIDENTIAL. It is intended > for the > exclusive use of the addressee. It is to be used > only to aid > in providing specific healthcare services to this > patient. > Any other use is a violation of Federal Law (HIPAA) > and will > be reported as such. > > ___________________________________________________________ Yahoo! Messenger - Communicate instantly..."Ping" your friends today! Download Messenger Now http://uk.messenger.yahoo.com/download/index.html  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HTM00IAB4U4QT@hubbard.azu.nl>; Wed, 25 Feb 2004 00:49:17 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004022500491531451 ; Wed, 25 Feb 2004 00:49:15 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id AAA01228; Wed, 25 Feb 2004 00:50:56 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma001212; Wed, 25 Feb 2004 00:50:35 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id PAA04729 for linac-eng-list; Tue, 24 Feb 2004 15:50:47 -0600 (CST) Received: from PHSXCHICI4.partners.org (phsxchici4.mgh.harvard.edu [132.183.118.57]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id PAA04723 for ; Tue, 24 Feb 2004 15:50:45 -0600 (CST) Received: by phsxchici4.mgh.harvard.edu with Internet Mail Service (5.5.2657.72) id ; Tue, 24 Feb 2004 16:50:35 -0500 Date: Tue, 24 Feb 2004 16:50:15 -0500 From: "Maddox, Buford J" Subject: RE: Computers In Close Proximity To The Modulator Sender: owner-linac-eng@plato.aristotle.net To: 'Phil Shoop' , "'Linac-eng@plato.aristotle.net'" Message-id: <36298D09ED1AD311B4DC0008C7F4D4E111466379@phsexch6.partners.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=ISO-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 24 Feb 2004 16:50:15 -0500 From: "Maddox, Buford J" Subject: RE: Computers In Close Proximity To The Modulator Sender: owner-linac-eng@plato.aristotle.net To: 'Phil Shoop' , "'Linac-eng@plato.aristotle.net'" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f I would not put a modulator in a closet, too hard to work on the machine that way. We basically sell treatment time, and this arrangement would increase downtime and manpower needed. Also too isolated, especially at night. And you must have clear workspace (30" or more) around the modulator, and room for two people on some occasions. But to put computers in close proximity to an 8MW peak power broadband noise source is against reasonable engineering judgement and practice. I remember the time when my C2 machines had many motion fault problems from modulators. the DeQ turnoff spike would get into the analog multiplexer in the console, so that motion faults would occurr. The faults could be moved from one axis to another by changing the % DEqing. Noise comes in by many paths, conduction through cords, both capacitive and inductive coupling, pure radiated signals,etc. Look at your TVs, try a radio in the room, etc. You will never solve it if it occurrs, the only sure solution is to design it out. BTW, this is the reason for so many screws on the modulator screens. Noise leakage depends strongly on screw spacing. There used to be mil spec books for this. I would consider it a patient safety problem as well. Corruption of patient data, especially if you use auto setup or IMRT, would be a major worry. How would you test for this, and who would be liable? I would not take responsibilty for this proposed arrangement. I would require some certification from elsewhere. If you have to do it, I think you will need isolated power, and a faraday cage, ie a complete metallic shield, for the computers. You will also need isolated signal paths into and out of the shield. Another way to save space would be to consider the Silouette version of the machine. It shaves several feet off the room size. Repair access is probably more difficult, but not bad, I am told. Will know for sure very soon. I agree, it would be insane. I think there are many cases where you cannot prove something like this, but must depend on the judgment of qualified and experienced engineers. Jerry -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Phil Shoop Sent: Tuesday, February 24, 2004 10:28 AM To: 'Linac-eng@plato.aristotle.net' Subject: Computers In Close Proximity To The Modulator Good day all. We are opening a new center soon and the plans call for putting the modulator for a Varian 21EX in a seperate closet. They also want to put all our computer servers in the same closet. Impac server, PortalVision server etc as well as the network switch, router etc. Does anyone know the effects of putting computer equipment in close proximity to the modulator. We're talking within 3 feet (its a small room). Personally, I don't think its a good idea but I will need some more info to change the plans other than gut instinct. Phil Shoop Maryland Regional Cancer Care Silver Spring MD. E-mail: PJShoop@mrccnet.com The PHI (Protected Health Information) contained in this FAX/Email is HIGHLY CONFIDENTIAL. It is intended for the exclusive use of the addressee. It is to be used only to aid in providing specific healthcare services to this patient. Any other use is a violation of Federal Law (HIPAA) and will be reported as such.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HTN006A43Q4PN@hubbard.azu.nl>; Wed, 25 Feb 2004 13:22:53 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004022513225126642 ; Wed, 25 Feb 2004 13:22:51 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id NAA04314; Wed, 25 Feb 2004 13:24:32 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma004040; Wed, 25 Feb 2004 13:23:28 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id EAA24535 for linac-eng-list; Wed, 25 Feb 2004 04:34:51 -0600 (CST) Received: from mail21.nhs.uk (mail21.nhs.uk [62.6.139.215]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id EAA24531 for ; Wed, 25 Feb 2004 04:34:49 -0600 (CST) Received: from [10.191.254.3] (helo=relayint2.nhs.uk) by mail21.nhs.uk with esmtp (MTC MTA) id 1AvwMs-0001Yc-Vq for linac-eng@plato.aristotle.net; Wed, 25 Feb 2004 10:34:18 +0000 Received: from relay.nhs.uk (194.62.42.142) by relayint2.nhs.uk (Syntegra-I2 7.0.008) id 4039DF71000A24F8 for linac-eng@plato.aristotle.net; Wed, 25 Feb 2004 10:34:18 +0000 Received: from esscdc2.essa.nhs.uk (195.107.101.37) by relay.nhs.uk (Syntegra-2 7.0.008) (authenticated as smtp_pah_nhs_uk@es2002.nhs.uk) id 403B6A2A0004CCC3 for linac-eng@plato.aristotle.net; Wed, 25 Feb 2004 10:34:18 +0000 Received: by esscdc2.essa.nhs.uk with XWall v3.28 ; Wed, 25 Feb 2004 10:37:10 +0000 Date: Wed, 25 Feb 2004 10:33:07 +0000 From: "Coley Chris (RDE) Essex Rivers" Subject: IAS2 Hard Disk Sender: owner-linac-eng@plato.aristotle.net To: "linac-eng@plato.aristotle.net" Message-id: <37B4C3952191274895976CE20DF5821D062A70BA@nemail.essa.nhs.uk> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_K5g30WjLmaam/gp+JJZKyg)" Precedence: bulk X-Assembled-By: XWall v3.28 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 25 Feb 2004 10:33:07 +0000 From: "Coley Chris (RDE) Essex Rivers" Subject: IAS2 Hard Disk Sender: owner-linac-eng@plato.aristotle.net To: "linac-eng@plato.aristotle.net" X-Assembled-By: XWall v3.28 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This is a multi part message in MIME format. --Boundary_(ID_K5g30WjLmaam/gp+JJZKyg) Content-type: text/plain; charset=us-ascii Content-transfer-encoding: quoted-printable Hi All Does anybody know of a manufacturers part number for a hard drive that will fit into the IAS2. i.e. a hard disk that we may currently purchase. Just wondered if anybody had fitted one recently. Regards Chris Coley (Technician) Essex County Hospital This e-mail is confidential and privileged. If you are not the intended = recipient please accept our apologies; please do not disclose, copy or = distribute information in this e-mail or take any action in reliance on = its contents: to do so is strictly prohibited and may be unlawful. = Please inform us that this message has gone astray before deleting it. = Thank you for your co-operation. --Boundary_(ID_K5g30WjLmaam/gp+JJZKyg) Content-type: text/html; charset=us-ascii Content-transfer-encoding: quoted-printable IAS2 Hard Disk

Hi All

Does anybody know of a manufacturers part = number for a hard drive that will fit into the IAS2.  i.e. a hard = disk that we may currently purchase.  Just wondered if anybody had = fitted one recently.

Regards

Chris Coley (Technician)

Essex County Hospital

This e-mail is confidential and privileged. If you are not the intended = recipient please accept our apologies; please do not disclose, copy or = distribute information in this e-mail or take any action in reliance on = its contents: to do so is strictly prohibited and may be unlawful. = Please inform us that this message has gone astray before deleting it. = Thank you for your co-operation.
--Boundary_(ID_K5g30WjLmaam/gp+JJZKyg)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HTN008794YL7A@hubbard.azu.nl>; Wed, 25 Feb 2004 13:49:35 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004022513493231509 ; Wed, 25 Feb 2004 13:49:32 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id NAA09873; Wed, 25 Feb 2004 13:51:13 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma009773; Wed, 25 Feb 2004 13:50:56 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id FAA25344 for linac-eng-list; Wed, 25 Feb 2004 05:03:30 -0600 (CST) Received: from mail22.nhs.uk (mail22.nhs.uk [62.6.139.218]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id FAA25340 for ; Wed, 25 Feb 2004 05:03:28 -0600 (CST) Received: from [10.191.254.3] (helo=relayint1.nhs.uk) by mail22.nhs.uk with esmtp (MTC MTA) id 1Avwob-00043C-Cc for linac-eng@plato.aristotle.net; Wed, 25 Feb 2004 11:02:57 +0000 Received: from relay.nhs.uk (194.62.42.144) by relayint1.nhs.uk (Syntegra-I1 7.0.008) id 4039DF370009D3BF for linac-eng@plato.aristotle.net; Wed, 25 Feb 2004 11:02:57 +0000 Received: from beijing.relay.grampian.scot.nhs.uk (10.251.30.7) by relay.nhs.uk (Syntegra-4 7.0.008) (authenticated as relay_grampian_scot_nhs_uk@es2002.nhs.uk) id 403B6AE40004F4BB; Wed, 25 Feb 2004 11:02:57 +0000 Received: from arh-mail2.arh.grampian.scot.nhs.uk ([9.16.60.28]) by beijing.relay.grampian.scot.nhs.uk with Microsoft SMTPSVC(5.0.2195.6713) ; Wed, 25 Feb 2004 10:56:19 +0000 Received: by arh-mail2.arh.grampian.scot.nhs.uk with Internet Mail Service (5.5.2657.72) id <16NAZ7DM>; Wed, 25 Feb 2004 10:55:39 +0000 Date: Wed, 25 Feb 2004 10:59:23 +0000 From: David.Smith@arh.grampian.scot.nhs.uk Subject: RE: Computers In Close Proximity To The Modulator [Scanned By SOP HOS Anti-Virus] Sender: owner-linac-eng@plato.aristotle.net To: PJShoop@mrccnet.com Cc: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; CHARSET=US-ASCII Precedence: bulk X-OriginalArrivalTime: 25 Feb 2004 10:56:19.0375 (UTC) FILETIME=[FF9A03F0:01C3FB8D] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 25 Feb 2004 10:59:23 +0000 From: David.Smith@arh.grampian.scot.nhs.uk Subject: RE: Computers In Close Proximity To The Modulator [Scanned By SOP HOS Anti-Virus] Sender: owner-linac-eng@plato.aristotle.net To: PJShoop@mrccnet.com Cc: linac-eng@plato.aristotle.net X-OriginalArrivalTime: 25 Feb 2004 10:56:19.0375 (UTC) FILETIME=[FF9A03F0:01C3FB8D] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Phil, My colleagues and I have had a bit of a discussion on this one. We have the same gut feeling as you, not to do it. However on our two Clinac 2100s the Portal Imager computer and R-Arm controller are mounted on the back of the linacs very close to the machines own klystron and about 3 feet from the modulator in the same area and we don't have any problems. Recently however we have had CPU problems in the R-arm, whether this is coincidental or not remains to be seen. Another problem may be heat build up in such a small area. Dave > -----Original Message----- > From: Phil Shoop [SMTP:PJShoop@mrccnet.com] > Sent: Tuesday, February 24, 2004 3:28 PM > To: Linac-eng@plato.aristotle.net > Subject: Computers In Close Proximity To The Modulator [Scanned By > SOPHOS Anti-Virus] > > Good day all. We are opening a new center soon and the plans call for > putting the modulator for a Varian 21EX in a seperate closet. They also > want to put all our computer servers in the same closet. Impac server, > PortalVision server etc as well as the network switch, router etc. > > Does anyone know the effects of putting computer equipment in close > proximity to the modulator. We're talking within 3 feet (its a small > room). > Personally, I don't think its a good idea but I will need some more info > to > change the plans other than gut instinct. > > Phil Shoop > Maryland Regional Cancer Care > Silver Spring MD. > > E-mail: PJShoop@mrccnet.com > > The PHI (Protected Health Information) contained in this > FAX/Email is HIGHLY CONFIDENTIAL. It is intended for the > exclusive use of the addressee. It is to be used only to aid > in providing specific healthcare services to this patient. > Any other use is a violation of Federal Law (HIPAA) and will > be reported as such. >  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HTN00DJJ7H048@hubbard.azu.nl>; Wed, 25 Feb 2004 14:43:56 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004022514434700110 ; Wed, 25 Feb 2004 14:43:47 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id OAA21082; Wed, 25 Feb 2004 14:45:28 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma020922; Wed, 25 Feb 2004 14:44:51 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id FAA26772 for linac-eng-list; Wed, 25 Feb 2004 05:53:40 -0600 (CST) Received: from PHSEXCHICI2.Partners.org (phsexchici2.partners.org [170.223.254.21]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id FAA26768 for ; Wed, 25 Feb 2004 05:53:38 -0600 (CST) Received: by phsexchici2.partners.org with Internet Mail Service (5.5.2657.72) id ; Wed, 25 Feb 2004 06:52:57 -0500 Date: Wed, 25 Feb 2004 06:52:55 -0500 From: "Maddox, Buford J" Subject: RE: Printer Sender: owner-linac-eng@plato.aristotle.net To: "'Coley Chris (RDE) Essex Rivers'" , linac-eng@plato.aristotle.net Message-id: <36298D09ED1AD311B4DC0008C7F4D4E11146637C@phsexch6.partners.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_yJr/mi+I73YloN3jSr7T2w)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 25 Feb 2004 06:52:55 -0500 From: "Maddox, Buford J" Subject: RE: Printer Sender: owner-linac-eng@plato.aristotle.net To: "'Coley Chris (RDE) Essex Rivers'" , linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_yJr/mi+I73YloN3jSr7T2w) Content-type: text/plain; charset=iso-8859-1 We have been using an HP855 on a portal vision. Tried another one, 950 I think, but had a compatibility problem. We need to replace the 855, so we are interested in another inexpensive printer. We do not need very high resolution or throughput. Anyone using similar low end printers for portal vision? Jerry -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Coley Chris (RDE) Essex Rivers Sent: Monday, February 23, 2004 6:56 AM To: linac-eng@plato.aristotle.net Subject: Printer Hi everyone Does anybody know what laser printer Varian now ships with their Vision system? Our Xerox C55 has had its day. We don't need a Codonics printer, just something that prints out reasonable copies of our images. Regards Chris Coley (Technician) Essex County Hospital This e-mail is confidential and privileged. If you are not the intended recipient please accept our apologies; please do not disclose, copy or distribute information in this e-mail or take any action in reliance on its contents: to do so is strictly prohibited and may be unlawful. Please inform us that this message has gone astray before deleting it. Thank you for your co-operation. --Boundary_(ID_yJr/mi+I73YloN3jSr7T2w) Content-type: text/html; charset=iso-8859-1 Printer
We have been using an HP855 on a portal vision.  Tried another one, 950 I think, but had a compatibility problem.  We need to replace the 855, so we are interested in another inexpensive printer.  We do not need very high resolution or throughput.  Anyone using similar low end printers for portal vision?
Jerry
-----Original Message-----
From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Coley Chris (RDE) Essex Rivers
Sent: Monday, February 23, 2004 6:56 AM
To: linac-eng@plato.aristotle.net
Subject: Printer

Hi everyone

Does anybody know what laser printer Varian now ships with their Vision system?  Our Xerox C55 has had its day.  We don't need a Codonics printer, just something that prints out reasonable copies of our images.

Regards

Chris Coley (Technician)

Essex County Hospital

This e-mail is confidential and privileged. If you are not the intended recipient please accept our apologies; please do not disclose, copy or distribute information in this e-mail or take any action in reliance on its contents: to do so is strictly prohibited and may be unlawful. Please inform us that this message has gone astray before deleting it. Thank you for your co-operation.
--Boundary_(ID_yJr/mi+I73YloN3jSr7T2w)--  1,, X-Coding-System: undecided-unix Return-path: Disposition-notification-to: Radiotherapie Epinal Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HTN00D0G7IKPZ@hubbard.azu.nl>; Wed, 25 Feb 2004 14:44:55 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004022514444206537 ; Wed, 25 Feb 2004 14:44:42 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id OAA21276; Wed, 25 Feb 2004 14:46:23 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma021156; Wed, 25 Feb 2004 14:46:02 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id GAA27476 for linac-eng-list; Wed, 25 Feb 2004 06:12:04 -0600 (CST) Received: from smtp2.rss.fr (smtp2.rss.fr [193.218.15.60] (may be forged)) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id GAA27472 for ; Wed, 25 Feb 2004 06:12:02 -0600 (CST) Received: from cluster.rss.fr (193.218.13.150) by smtp2.rss.fr (6.0.021) id 4020B67800547C7D for linac-eng@plato.aristotle.net; Wed, 25 Feb 2004 13:12:56 +0100 Received: from fwpai1.rss.fr (193.218.13.148) by cluster.rss.fr (6.0.021) id 402B3C4000468325 for linac-eng@plato.aristotle.net; Wed, 25 Feb 2004 13:10:39 +0100 Received: by fwpai1.rss.fr; id NAA08693; Wed, 25 Feb 2004 13:10:39 +0100 (MET) Received: from unknown(10.40.36.2) by fwpai1.rss.fr via smap (4.0) id xma008458; Wed, 25 Feb 2004 13:10:15 +0100 Date: Wed, 25 Feb 2004 13:12:38 +0100 (Paris, Madrid) From: Radiotherapie Epinal Subject: test Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <403C9136.000008.03424@jack> MIME-version: 1.0 X-Mailer: IncrediMail (2001184) Content-type: MULTIPART/related; BOUNDARY="Boundary_(ID_J52HAQG3eGBe4UykaxN3KA)"; type="multipart/alternative" Precedence: bulk X-FID: FLAVOR00-NONE-0000-0000-000000000000 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 *** EOOH *** Disposition-notification-to: Radiotherapie Epinal Date: Wed, 25 Feb 2004 13:12:38 +0100 (Paris, Madrid) From: Radiotherapie Epinal Subject: test Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-FID: FLAVOR00-NONE-0000-0000-000000000000 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 --Boundary_(ID_J52HAQG3eGBe4UykaxN3KA) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_uf8NFj3ToNIE+vzeKmexNg)" --Boundary_(ID_uf8NFj3ToNIE+vzeKmexNg) Content-type: Text/Plain; charset=iso-8859-1 Content-transfer-encoding: quoted-printable test --Boundary_(ID_uf8NFj3ToNIE+vzeKmexNg) Content-type: Text/HTML; charset=iso-8859-1 Content-transfer-encoding: quoted-printable
test
______________________= __________________________________________
3D""  IncrediMail -= La messagerie =E9lectronique a enfin =E9volu=E9 - Cliquer ici --Boundary_(ID_uf8NFj3ToNIE+vzeKmexNg)-- --Boundary_(ID_J52HAQG3eGBe4UykaxN3KA) Content-id: <45F7391A-B11E-4FAA-9B91-FA9E3EBBD323> Content-type: image/gif; name=IMSTP.gif Content-disposition: ATTACHMENT; FILENAME=IMSTP.gif Content-transfer-encoding: base64 R0lGODlhFAAPALMIAP9gAM9gAM8vAM9gL/+QL5AvAGAvAP9gL////wAAAAAAAAAAAAAAAAAAAAAA AAAAACH/C05FVFNDQVBFMi4wAwEAAAAh+QQJFAAIACwAAAAAFAAPAAAEVRDJSaudJuudrxlEKI6B URlCUYyjKpgYAKSgOBSCDEuGDKgrAtC3Q/R+hkPJEDgYCjpKr5A8WK9OaPFZwHoPqm3366VKyeRt E30tVVRscMHDqV/u+AgAIfkEBWQACAAsAAAAABQADwAABBIQyUmrvTjrzbv/YCiOZGmeaAQAIfkE CRQACAAsAgABABAADQAABEoQIUOrpXIOwrsPxiQUheeRAgUA49YNhbCqK1kS9grQhXGAhsDBUJgZ AL2Dcqkk7ogFpvRAokSn0p4PO6UIuUsQggSmFjKXdAgRAQAh+QQFCgAIACwAAAAAFAAPAAAEEhDJ Sau9OOvNu/9gKI5kaZ5oBAAh+QQJFAAIACwCAAEAEAANAAAEShAhQ6ulcg7Cuw/GJBSF55ECBQDj 1g2FsKorWRL2CtCFcYCGwMFQmBkAvYNyqSTuiAWm9ECiRKfSng87pQi5SxCCBKYWMpd0CBEBACH5 BAVkAAgALAAAAAAUAA8AAAQSEMlJq7046827/2AojmRpnmgEADs= --Boundary_(ID_J52HAQG3eGBe4UykaxN3KA)--  1,, X-Coding-System: undecided-unix Return-path: Disposition-notification-to: Radiotherapie Epinal Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HTN00FI19LZR8@hubbard.azu.nl>; Wed, 25 Feb 2004 15:30:02 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004022515295826044 ; Wed, 25 Feb 2004 15:29:58 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id PAA00072; Wed, 25 Feb 2004 15:31:39 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma000017; Wed, 25 Feb 2004 15:31:15 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id GAA28542 for linac-eng-list; Wed, 25 Feb 2004 06:47:41 -0600 (CST) Received: from smtp2.rss.fr (smtp2.rss.fr [193.218.15.60] (may be forged)) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id GAA28537 for ; Wed, 25 Feb 2004 06:47:39 -0600 (CST) Received: from cluster.rss.fr (193.218.13.150) by smtp2.rss.fr (6.0.021) id 4020B678005495F3 for linac-eng@plato.aristotle.net; Wed, 25 Feb 2004 13:48:34 +0100 Received: from fwpai2.rss.fr (193.218.13.148) by cluster.rss.fr (6.0.021) id 402B3C400046AA87 for linac-eng@plato.aristotle.net; Wed, 25 Feb 2004 13:46:17 +0100 Received: by fwpai2.rss.fr; id NAA23270; Wed, 25 Feb 2004 13:46:16 +0100 (MET) Received: from unknown(10.40.36.7) by fwpai2.rss.fr via smap (4.0) id xma023125; Wed, 25 Feb 2004 13:46:12 +0100 Date: Wed, 25 Feb 2004 13:48:34 +0100 (Paris, Madrid) From: Radiotherapie Epinal Subject: Techniciens francophones Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <403C99A2.000012.03424@jack> MIME-version: 1.0 X-Mailer: IncrediMail (2001184) Content-type: MULTIPART/related; BOUNDARY="Boundary_(ID_whnyq3WYk0JT07U+B+g5TQ)"; type="multipart/alternative" Precedence: bulk X-FID: FLAVOR00-NONE-0000-0000-000000000000 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 *** EOOH *** Disposition-notification-to: Radiotherapie Epinal Date: Wed, 25 Feb 2004 13:48:34 +0100 (Paris, Madrid) From: Radiotherapie Epinal Subject: Techniciens francophones Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-FID: FLAVOR00-NONE-0000-0000-000000000000 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 --Boundary_(ID_whnyq3WYk0JT07U+B+g5TQ) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_e2yL0wFpegGzV5Lzul8VBg)" --Boundary_(ID_e2yL0wFpegGzV5Lzul8VBg) Content-type: Text/Plain; charset=iso-8859-1 Content-transfer-encoding: quoted-printable Bonjour,=0D =0D Je viens de cr=E9er un site web destin=E9 aux techniciens de radioth=E9ra= pie Francophones. =0D Le site est sur http://radiotherapie.free.fr . Il a pour but de rassemble= r et partager les exp=E9riences et savoir-faire des techniciens de radioth=E9= rapie =0D Le forum de discussion traite de sujets divers, les acc=E9l=E9rateurs, simulateurs, mesures physiques, mat=E9riels de contentions, r=E9seaux, et diff=E9rentes informations professionnelles en seront les principaux.=0D Il est aussi possible de partager des protocoles qualit=E9s ou tout fichi= er informatique par l'interm=E9diaire du syst=E8me d'archive, ou m=EAme des = photos au travers de la galerie.=0D =0D Ce site ne demande qu'a vivre et a aider tout ses membres, alors faites l= e connaitre autour de vous !! --Boundary_(ID_e2yL0wFpegGzV5Lzul8VBg) Content-type: Text/HTML; charset=iso-8859-1 Content-transfer-encoding: quoted-printable
Bonjour,
 
Je viens de cr=E9er un site web destin=E9 aux techniciens de radioth= =E9rapie Francophones.
 Le forum de discussion traite de sujets divers, les acc=E9l=E9= rateurs, simulateurs, mesures physiques, mat=E9riels de contentions, r=E9= seaux, et diff=E9rentes informations professionnelles en seront les princ= ipaux.
Il est aussi possible de partager des protocoles qualit=E9s ou tout = fichier informatique par l'interm=E9diaire du syst=E8me d'archive, o= u m=EAme des photos au travers de la galerie.
 
Ce site ne demande qu'a vivre et a aider tout ses membres, alors fai= tes le connaitre autour de vous !!
______________________= __________________________________________
3D""  IncrediMail -= La messagerie =E9lectronique a enfin =E9volu=E9 - Cliquer ici --Boundary_(ID_e2yL0wFpegGzV5Lzul8VBg)-- --Boundary_(ID_whnyq3WYk0JT07U+B+g5TQ) Content-id: <8630E6D1-9A41-4A89-B3F9-20E793AF6712> Content-type: image/gif; name=IMSTP.gif Content-disposition: ATTACHMENT; FILENAME=IMSTP.gif Content-transfer-encoding: base64 R0lGODlhFAAPALMIAP9gAM9gAM8vAM9gL/+QL5AvAGAvAP9gL////wAAAAAAAAAAAAAAAAAAAAAA AAAAACH/C05FVFNDQVBFMi4wAwEAAAAh+QQJFAAIACwAAAAAFAAPAAAEVRDJSaudJuudrxlEKI6B URlCUYyjKpgYAKSgOBSCDEuGDKgrAtC3Q/R+hkPJEDgYCjpKr5A8WK9OaPFZwHoPqm3366VKyeRt E30tVVRscMHDqV/u+AgAIfkEBWQACAAsAAAAABQADwAABBIQyUmrvTjrzbv/YCiOZGmeaAQAIfkE CRQACAAsAgABABAADQAABEoQIUOrpXIOwrsPxiQUheeRAgUA49YNhbCqK1kS9grQhXGAhsDBUJgZ AL2Dcqkk7ogFpvRAokSn0p4PO6UIuUsQggSmFjKXdAgRAQAh+QQFCgAIACwAAAAAFAAPAAAEEhDJ Sau9OOvNu/9gKI5kaZ5oBAAh+QQJFAAIACwCAAEAEAANAAAEShAhQ6ulcg7Cuw/GJBSF55ECBQDj 1g2FsKorWRL2CtCFcYCGwMFQmBkAvYNyqSTuiAWm9ECiRKfSng87pQi5SxCCBKYWMpd0CBEBACH5 BAVkAAgALAAAAAAUAA8AAAQSEMlJq7046827/2AojmRpnmgEADs= --Boundary_(ID_whnyq3WYk0JT07U+B+g5TQ)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HTN000RTGMDK2@hubbard.azu.nl>; Wed, 25 Feb 2004 18:01:27 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004022518012415690 ; Wed, 25 Feb 2004 18:01:24 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA29251; Wed, 25 Feb 2004 18:03:06 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma029198; Wed, 25 Feb 2004 18:02:45 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id IAA03497 for linac-eng-list; Wed, 25 Feb 2004 08:58:15 -0600 (CST) Received: from mail23.nhs.uk (mail23.nhs.uk [62.6.139.221]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id IAA03492 for ; Wed, 25 Feb 2004 08:58:12 -0600 (CST) Received: from [10.191.254.3] (helo=relayint2.nhs.uk) by mail23.nhs.uk with esmtp (MTC MTA) id 1Aw0Tm-0007EF-2M for linac-eng@plato.aristotle.net; Wed, 25 Feb 2004 14:57:42 +0000 Received: from relay.nhs.uk (194.62.42.142) by relayint2.nhs.uk (Syntegra-I2 7.0.008) id 4039DF71000C43D1 for linac-eng@plato.aristotle.net; Wed, 25 Feb 2004 14:57:41 +0000 Received: from artemis.pht.org (195.105.105.5) by relay.nhs.uk (Syntegra-2 7.0.008) id 403C8F2A0001E757 for linac-eng@plato.aristotle.net; Wed, 25 Feb 2004 14:57:42 +0000 Received: by ARTEMIS with Internet Mail Service (5.5.2653.19) id ; Wed, 25 Feb 2004 14:56:56 +0000 Date: Wed, 25 Feb 2004 14:57:06 +0000 From: "Whitlock, Brian" Subject: RE: Techniciens francophones Sender: owner-linac-eng@plato.aristotle.net To: "Linac-Eng (E-mail)" Message-id: <37106221CAA3D511AC1800508BD31603029B59CC@OBERON> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: MULTIPART/MIXED; BOUNDARY="Boundary_(ID_w9eYN8C0Z+6/zSWv6ZQQtA)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 25 Feb 2004 14:57:06 +0000 From: "Whitlock, Brian" Subject: RE: Techniciens francophones Sender: owner-linac-eng@plato.aristotle.net To: "Linac-Eng (E-mail)" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_w9eYN8C0Z+6/zSWv6ZQQtA) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_uY4n3hoATZ208e1OdUra0Q)" --Boundary_(ID_uY4n3hoATZ208e1OdUra0Q) Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: quoted-printable A rough translation =20 Brian R/T Poole Hospital =20 =20 Hello, =20 I have just created a Web site intended for the technicians of = Francophones radiotherapy. The site is on http://radiotherapie.free.fr. The purpose of it is to gather and share the experiments and know-how of the technicians of radiotherapy. The = forum of discussion covers various subjects, the accelerators, simulators, measurements physical, material of applications, networks, and various professional information will be the principal one. It is also possible = to share protocols qualities or any computer file by the intermediary of the system of file, or even of the photographs through = the gallery. This site does to help all its members, let all know. =20 -----Original Message----- From: Radiotherapie Epinal [mailto:radiotherapie@ch-epinal.rss.fr] Sent: 25 February 2004 12:49 To: linac-eng@plato.aristotle.net Subject: Techniciens francophones Bonjour, =20 Je viens de cr=E9er un site web destin=E9 aux techniciens de = radioth=E9rapie Francophones.=20 Le site est sur http://radiotherapie.free.fr = . Il a pour but de rassembler et partager les exp=E9riences et = savoir-faire des techniciens de radioth=E9rapie. Le forum de discussion traite de sujets divers, les acc=E9l=E9rateurs, simulateurs, mesures physiques, mat=E9riels de contentions, r=E9seaux, = et diff=E9rentes informations professionnelles en seront les principaux. Il est aussi possible de partager des protocoles qualit=E9s ou tout = fichier informatique par l'interm=E9diaire du syst=E8me d'archive, ou m=EAme = des photos au travers de la galerie. =20 Ce site ne demande qu'a vivre et a aider tout ses membres, alors faites = le connaitre autour de vous !! =09 ________________________________________________________________ = IncrediMail - La messagerie =E9lectronique a enfin =E9volu=E9 - Cliquer = ici --Boundary_(ID_uY4n3hoATZ208e1OdUra0Q) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: quoted-printable
A rough translation
 
Brian R/T
Poole Hospital
 
 
Hello,
 
I have just created a Web site = intended for=20 the technicians of Francophones = radiotherapy. The site is on=20 http://radiotherapie.free.fr. The purpose of it is to gather and = share
the=20 experiments and know-how of the technicians of radiotherapy. The forum of=20 discussion covers various subjects, the accelerators, simulators, measurements = physical, material of applications, = networks, and various professional information = will be=20 the principal one. It is also = possible to=20 share protocols qualities or any computer file by the
intermediary = of the=20 system of file, or even of the photographs through the gallery.
This site does to = help all=20 its members, let all = know.
 
-----Original Message-----
From: Radiotherapie = Epinal=20 [mailto:radiotherapie@ch-epinal.rss.fr]
Sent: 25 February = 2004=20 12:49
To: linac-eng@plato.aristotle.net
Subject: = Techniciens=20 francophones

Bonjour,
 
Je viens de cr=E9er un site web destin=E9 aux techniciens de = radioth=E9rapie Francophones.
Le site est sur http://radiotherapie.free.fr . Il a pour but = de=20 rassembler et partager les exp=E9riences et savoir-faire des = techniciens de radioth=E9rapie.
 Le forum de discussion traite de sujets divers, les=20 acc=E9l=E9rateurs, simulateurs, mesures physiques, mat=E9riels de = contentions,=20 r=E9seaux, et diff=E9rentes informations professionnelles en = seront les=20 principaux.
Il est aussi possible de partager des protocoles qualit=E9s = ou tout=20 fichier informatique par l'interm=E9diaire du syst=E8me = d'archive, ou=20 m=EAme des photos au travers de la galerie.
 
Ce site ne demande qu'a vivre et a aider tout ses membres, = alors=20 faites le connaitre autour de vous !!
_______________________________________________________________= _
= 3D""=20 =20 IncrediMail - La messagerie =E9lectronique a enfin = =E9volu=E9 -=20 = Cliquer=20 ici --Boundary_(ID_uY4n3hoATZ208e1OdUra0Q)-- --Boundary_(ID_w9eYN8C0Z+6/zSWv6ZQQtA) Content-id: <530105014@25022004-0111> Content-type: image/gif; name=IMSTP.gif Content-disposition: attachment; filename=IMSTP.gif Content-transfer-encoding: base64 R0lGODlhFAAPALMIAP9gAM9gAM8vAM9gL/+QL5AvAGAvAP9gL////wAAAAAAAAAAAAAAAAAAAAAA AAAAACH/C05FVFNDQVBFMi4wAwEAAAAh+QQJFAAIACwAAAAAFAAPAAAEVRDJSaudJuudrxlEKI6B URlCUYyjKpgYAKSgOBSCDEuGDKgrAtC3Q/R+hkPJEDgYCjpKr5A8WK9OaPFZwHoPqm3366VKyeRt E30tVVRscMHDqV/u+AgAIfkEBWQACAAsAAAAABQADwAABBIQyUmrvTjrzbv/YCiOZGmeaAQAIfkE CRQACAAsAgABABAADQAABEoQIUOrpXIOwrsPxiQUheeRAgUA49YNhbCqK1kS9grQhXGAhsDBUJgZ AL2Dcqkk7ogFpvRAokSn0p4PO6UIuUsQggSmFjKXdAgRAQAh+QQFCgAIACwAAAAAFAAPAAAEEhDJ Sau9OOvNu/9gKI5kaZ5oBAAh+QQJFAAIACwCAAEAEAANAAAEShAhQ6ulcg7Cuw/GJBSF55ECBQDj 1g2FsKorWRL2CtCFcYCGwMFQmBkAvYNyqSTuiAWm9ECiRKfSng87pQi5SxCCBKYWMpd0CBEBACH5 BAVkAAgALAAAAAAUAA8AAAQSEMlJq7046827/2AojmRpnmgEADs= --Boundary_(ID_w9eYN8C0Z+6/zSWv6ZQQtA)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HTN002H2HTV2D@hubbard.azu.nl>; Wed, 25 Feb 2004 18:27:32 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004022518272615652 ; Wed, 25 Feb 2004 18:27:26 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA02405; Wed, 25 Feb 2004 18:29:07 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma002347; Wed, 25 Feb 2004 18:28:56 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id JAA05113 for linac-eng-list; Wed, 25 Feb 2004 09:38:21 -0600 (CST) Received: from titan.lhsc.on.ca (titan.lhsc.on.ca [142.158.2.20]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id JAA05102 for ; Wed, 25 Feb 2004 09:38:16 -0600 (CST) Received: from mail.lrcc.on.ca (mail.lrcc.on.ca [142.158.120.242]) by titan.lhsc.on.ca (8.11.7p1+Sun/8.11.7) with SMTP id i1PFbho14065; Wed, 25 Feb 2004 10:37:43 -0500 (EST) Received: by mail.lrcc.on.ca(Lotus SMTP MTA v4.6.7 (934.1 12-30-1999)) id 85256E45.0055922A ; Wed, 25 Feb 2004 10:34:39 -0500 Date: Wed, 25 Feb 2004 10:34:35 -0500 From: Randy.McVittie@lrcc.on.ca Subject: Re: IAS2 Hard Disk Sender: owner-linac-eng@plato.aristotle.net To: "Coley Chris (RDE) Essex Rivers" Cc: "linac-eng@plato.aristotle.net" Message-id: <85256E45.005590C7.00@mail.lrcc.on.ca> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Content-disposition: inline Precedence: bulk X-Lotus-FromDomain: LRCC X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 25 Feb 2004 10:34:35 -0500 From: Randy.McVittie@lrcc.on.ca Subject: Re: IAS2 Hard Disk Sender: owner-linac-eng@plato.aristotle.net To: "Coley Chris (RDE) Essex Rivers" Cc: "linac-eng@plato.aristotle.net" Content-disposition: inline X-Lotus-FromDomain: LRCC X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f The part number I got off of two of our spare hard drives are: Seagate MODEL: STS 3189-2 PART NO: 9W8004-001 MAXTOR ATLAS 10K III (ROMA NUMERALS) 18.4S KW18L018 REV 02 (This hard drive has a fine pitch SCSI plug on the back so you would have to b uy an adapter so that you can plug the hard drive into the SCSI cable on the IAS2) Good luck Randy McVittie  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HTN00DGVWHZM5@hubbard.azu.nl>; Wed, 25 Feb 2004 23:44:24 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004022523442225635 ; Wed, 25 Feb 2004 23:44:22 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id XAA07132; Wed, 25 Feb 2004 23:46:03 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma007112; Wed, 25 Feb 2004 23:45:57 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id OAA11787 for linac-eng-list; Wed, 25 Feb 2004 14:24:35 -0600 (CST) Received: from hotmail.com (bay4-f5.bay4.hotmail.com [65.54.171.5]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id OAA11777 for ; Wed, 25 Feb 2004 14:24:33 -0600 (CST) Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Wed, 25 Feb 2004 08:21:45 -0800 Received: from 216.79.64.34 by by4fd.bay4.hotmail.msn.com with HTTP; Wed, 25 Feb 2004 16:21:45 +0000 (GMT) Date: Wed, 25 Feb 2004 16:21:45 +0000 From: s melin Subject: RE: Computers In Close Proximity To The Modulator Sender: owner-linac-eng@plato.aristotle.net X-Sender: smelin@msn.com To: Guy.Turner@WTH.org, PJShoop@mrccnet.com, Linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 Content-type: text/plain; CHARSET=US-ASCII; format=flowed Content-transfer-encoding: quoted-printable Precedence: bulk X-Originating-IP: [216.79.64.34] X-Originating-Email: [smelin@msn.com] X-OriginalArrivalTime: 25 Feb 2004 16:21:45.0557 (UTC) FILETIME=[761CF050:01C3FBBB] X-MIME-Autoconverted: from 8bit to quoted-printable by plato.aristotle.net id OAA11787 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 25 Feb 2004 16:21:45 +0000 From: s melin Subject: RE: Computers In Close Proximity To The Modulator Sender: owner-linac-eng@plato.aristotle.net X-Sender: smelin@msn.com To: Guy.Turner@WTH.org, PJShoop@mrccnet.com, Linac-eng@plato.aristotle.net X-Originating-IP: [216.79.64.34] X-Originating-Email: [smelin@msn.com] X-OriginalArrivalTime: 25 Feb 2004 16:21:45.0557 (UTC) FILETIME=[761CF050:01C3FBBB] X-MIME-Autoconverted: from 8bit to quoted-printable by plato.aristotle.net id OAA11787 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f I agree with Guy. To put sensitive computor equipment next to a monulato= r=20 like this is not only a VERY BAD idea, I would speculate it probably woul= d=20 negate the vendors' warranty. An alternative should obviously be explored. >From: "Turner, Guy" >To: "'Phil Shoop'" , =20 >"'Linac-eng@plato.aristotle.net'" >Subject: RE: Computers In Close Proximity To The Modulator >Date: Tue, 24 Feb 2004 10:58:39 -0600 >MIME-Version: 1.0 >Received: from mc1-f16.hotmail.com ([64.4.50.23]) by mc1-s19.hotmail.com= =20 >with Microsoft SMTPSVC(5.0.2195.6824); Tue, 24 Feb 2004 10:15:04 -0800 >Received: from plato.aristotle.net ([206.66.224.2]) by mc1-f16.hotmail.c= om=20 >with Microsoft SMTPSVC(5.0.2195.6824); Tue, 24 Feb 2004 10:14:12 -0800 >Received: by plato.aristotle.net (8.9.0/8.9.0) id KAA25632for=20 >linac-eng-list; Tue, 24 Feb 2004 10:59:10 -0600 (CST) >Received: from EXCHCLUSTER.wth.org (mailout.wth.org [216.79.64.34])by=20 >plato.aristotle.net (8.9.0/8.9.0) with ESMTP id KAA25628for=20 >; Tue, 24 Feb 2004 10:59:09 -0600 (CST) >Received: by exchcluster.wth.org with Internet Mail Service (5.5.2656.59= )id=20 ><1YDL4YTT>; Tue, 24 Feb 2004 10:58:41 -0600 >X-Message-Info: pdGgd64CkwarC/eUn2C2HVTYg8haMqiFwd8NZrx9ZDo=3D >X-Authentication-Warning: plato.aristotle.net: majordomo set sender to=20 >owner-linac-eng@plato.aristotle.net using -f >Message-ID: >X-Mailer: Internet Mail Service (5.5.2656.59) >Precedence: bulk >Return-Path: owner-linac-eng@plato.aristotle.net >X-OriginalArrivalTime: 24 Feb 2004 18:14:12.0614 (UTC)=20 >FILETIME=3D[01426260:01C3FB02] > >Your gut is correct, but if anything but common sense is required to >convince the powers-that-be that this is a bad idea you are in trouble. >Placing sensitive network equipment such as switches and routers, and >magnetic media, as in hard drives, in close proximity to a massive >electromagnetic pulse generator like the modulator is insane. All of th= e >network equipment specs that I am aware of require that the equipment be >placed on a dedicated electric circuit because they are sensitive to noi= se >spikes. If they are that sensitive placing them in the same tiny room a= s >the modulator falls squarely in the "BAD IDEA" (patent pending) category. > >Guy > > >-----Original Message----- >From: Phil Shoop [mailto:PJShoop@mrccnet.com] >Sent: Tuesday, February 24, 2004 9:28 AM >To: 'Linac-eng@plato.aristotle.net' >Subject: Computers In Close Proximity To The Modulator > >Good day all. We are opening a new center soon and the plans call for >putting the modulator for a Varian 21EX in a seperate closet. They also >want to put all our computer servers in the same closet. Impac server, >PortalVision server etc as well as the network switch, router etc. > >Does anyone know the effects of putting computer equipment in close >proximity to the modulator. We're talking within 3 feet (its a small roo= m). >Personally, I don't think its a good idea but I will need some more info= to >change the plans other than gut instinct. > >Phil Shoop >Maryland Regional Cancer Care >Silver Spring MD. > >E-mail: PJShoop@mrccnet.com > >The PHI (Protected Health Information) contained in this >FAX/Email is HIGHLY CONFIDENTIAL. It is intended for the >exclusive use of the addressee. It is to be used only to aid >in providing specific healthcare services to this patient. >Any other use is a violation of Federal Law (HIPAA) and will >be reported as such. > _________________________________________________________________ Store more e-mails with MSN Hotmail Extra Storage =96 4 plans to choose f= rom!=20 http://click.atdmt.com/AVE/go/onm00200362ave/direct/01/  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HTN00DIFWKUM5@hubbard.azu.nl>; Wed, 25 Feb 2004 23:46:07 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004022523460123573 ; Wed, 25 Feb 2004 23:46:01 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id XAA07272; Wed, 25 Feb 2004 23:47:42 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma007239; Wed, 25 Feb 2004 23:47:36 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id PAA15115 for linac-eng-list; Wed, 25 Feb 2004 15:02:12 -0600 (CST) Received: from dalwhinnie.chhlth.govt.nz ([203.163.70.2]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id PAA15108 for ; Wed, 25 Feb 2004 15:01:54 -0600 (CST) Received: from mailsweeper2.chhlth.govt.nz (mailsweeper2.chhlth.govt.nz [159.117.18.162]) by dalwhinnie.chhlth.govt.nz (8.12.8/8.12.5) with ESMTP id i1PIJGfU029499 for ; Thu, 26 Feb 2004 07:19:17 +1300 Received: from SMTPGATE.CHHLTH.GOVT.NZ (unverified) by mailsweeper2.chhlth.govt.nz (Content Technologies SMTPRS 4.3.1) with ESMTP id for ; Thu, 26 Feb 2004 07:16:06 +1300 Received: from CHCH2-MTA by SMTPGATE.CHHLTH.GOVT.NZ with Novell_GroupWise; Thu, 26 Feb 2004 07:16:52 +1300 Date: Thu, 26 Feb 2004 07:16:40 +1300 From: Dave Pinchin Subject: Re: IAS2 Hard Disk Sender: owner-linac-eng@plato.aristotle.net To: Randy.McVittie@lrcc.on.ca, linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.0.4 Content-type: text/plain; charset=us-ascii Content-disposition: inline Content-transfer-encoding: 8bit Precedence: bulk X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id PAA15112 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 26 Feb 2004 07:16:40 +1300 From: Dave Pinchin Subject: Re: IAS2 Hard Disk Sender: owner-linac-eng@plato.aristotle.net To: Randy.McVittie@lrcc.on.ca, linac-eng@plato.aristotle.net Content-disposition: inline X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id PAA15112 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f G'day, Just for interest... Does the IAS2 disk contain IAS2 software or is it used purely for storing aquired data? If it does have software on it what is the replacement proceedure? How does one get a fresh copy of the software? If it is purely a data repository, is there any formatting required on the replacement disk? Ta lots. Dave. ********************************************************************** ** This email and attachments have been scanned for content and viruses and is believed to be clean ** This email or attachments may contain confidential or legally privileged information intended for the sole use of the addressee(s). Any use, redistribution, disclosure, or reproduction of this message, except as intended, is prohibited. If you received this email in error, please notify the sender and remove all copies of the message, including any attachments. Any views or opinions expressed in this email (unless otherwise stated) may not represent those of Canterbury District Health Board **********************************************************************  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HTN00DL1WOHM5@hubbard.azu.nl>; Wed, 25 Feb 2004 23:48:19 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004022523481602283 ; Wed, 25 Feb 2004 23:48:16 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id XAA07466; Wed, 25 Feb 2004 23:49:56 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma007456; Wed, 25 Feb 2004 23:49:54 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id OAA13841 for linac-eng-list; Wed, 25 Feb 2004 14:34:13 -0600 (CST) Received: from zixvpm1.fairview.org (ZIXVPM1.fairview.org [162.96.12.40]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id OAA13834 for ; Wed, 25 Feb 2004 14:34:10 -0600 (CST) Received: from zixvpm1.fairview.org (ZixVPM [127.0.0.1]) by Outbound.fairview.org (Proprietary) with ESMTP id A1958EC07D for ; Wed, 25 Feb 2004 10:33:36 -0600 (CST) Received: from gw-northdom.fairview.org (GW-NORTHDOM.fairview.org [162.96.12.31]) by zixvpm1.fairview.org (Proprietary) with ESMTP id 2A7A7EC097 for ; Wed, 25 Feb 2004 10:33:14 -0600 (CST) Received: from NORTH-MTA by gw-northdom.fairview.org with Novell_GroupWise; Wed, 25 Feb 2004 10:28:22 -0600 Date: Wed, 25 Feb 2004 10:28:18 -0600 From: ROY ERICKSON Subject: compensation Sender: owner-linac-eng@plato.aristotle.net To: LINac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.5.1 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_eVYUWv0lWx2pXCy6ocXePw)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 25 Feb 2004 10:28:18 -0600 From: ROY ERICKSON Subject: compensation Sender: owner-linac-eng@plato.aristotle.net To: LINac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f --Boundary_(ID_eVYUWv0lWx2pXCy6ocXePw) Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: quoted-printable X-MIME-Autoconverted: from 8bit to quoted-printable by plato.aristotle.net id OAA13841 Hi Group, One last try: does any one have any data on linac service engineer compensation? I am about to enter wage negotiations with my employer and have found almost no data to bargain with. Anything you mail or email would be greatly appreciated. =20 Thanks, Roy Erickson =20 FUMC 420 Delaware St SE MMC494 =20 Mpls, Mn 55455 The information transmitted in this e-mail is intended only for the perso= n or entity to which it is addressed and may contain confidential and/or privileged material, including =93pro= tected health information.=94 If you are not the intended recipient, you are hereby notified that any review, retr= ansmission, dissemination, distribution, or copying of this message is strictly prohibited. If you = have received this communication in error, please destroy and delete this message from any computer and conta= ct us immediately by return e-mail. <<<>>> --Boundary_(ID_eVYUWv0lWx2pXCy6ocXePw) Content-type: text/html; charset=ISO-8859-1 Content-transfer-encoding: quoted-printable X-MIME-Autoconverted: from 8bit to quoted-printable by plato.aristotle.net id OAA13841
Hi Group,
  One last try: does any one have any data= on linac=20 service engineer compensation?
I am about to enter wage negotiations with my e= mployer=20 and have found almost no data to bargain with. Anything  you mail or= email=20 would be greatly appreciated.
         &nbs= p;            = ;            =             &= nbsp;           &n= bsp;     =20 Thanks,
         &nbs= p;            = ;            =             &= nbsp;           &n= bsp;      =20 Roy Erickson
         &nbs= p;            = ;            =             &= nbsp;           &n= bsp;       =20 FUMC
         &nbs= p;            = ;            =             &= nbsp;           &n= bsp;       =20 420 Delaware St SE MMC494
         &nbs= p;            = ;            =             &= nbsp;           &n= bsp;       =20 Mpls, Mn 55455
The information transmitted in this e-mail is intended only for th= e person or entity to which it is addressed and may contain

 

 

The information transmitted in this e-mail is int= ended only for

the person or entity t= o which it is addressed and may contain

confidential and/or pr= ivileged material, including =93protected

health information.=94= =A0 If you are not the intended recipie= nt,

you are hereby notifie= d that any review, retransmission,

dissemination, distrib= ution, or copying of this message is

strictly prohibited.=A0 If you have received this communica= tion

in error, please destr= oy and delete this message from any

computer and contact u= s immediately by return e-mail.

<<<<P.H.I.>>>>

 

--Boundary_(ID_eVYUWv0lWx2pXCy6ocXePw)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HTN00DLUWPEM5@hubbard.azu.nl>; Wed, 25 Feb 2004 23:48:51 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004022523484917246 ; Wed, 25 Feb 2004 23:48:49 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id XAA07544; Wed, 25 Feb 2004 23:50:31 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma007509; Wed, 25 Feb 2004 23:50:18 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id PAA15231 for linac-eng-list; Wed, 25 Feb 2004 15:06:31 -0600 (CST) Received: from email.med.yale.edu (email.med.yale.edu [130.132.232.16]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id PAA15227 for ; Wed, 25 Feb 2004 15:06:30 -0600 (CST) Received: from yale.edu (vitalip.med.yale.edu [130.132.213.170]) by email.med.yale.edu (PMDF V6.1-1 #30873) with ESMTP id <0HTN0PJ0ZL5ULX@email.med.yale.edu> for linac-eng@plato.aristotle.net; Wed, 25 Feb 2004 13:39:35 -0500 (EST) Date: Wed, 25 Feb 2004 13:40:51 -0500 From: Peter Vitali Subject: Thanks to Dave Smith Sender: owner-linac-eng@plato.aristotle.net To: "Linac-Engineers, Listserver Mess" Message-id: <403CEBE1.67449211@yale.edu> MIME-version: 1.0 X-Mailer: Mozilla 4.76 (Macintosh; U; PPC) Content-type: text/plain; charset=us-ascii; x-mac-type=54455854; x-mac-creator=4D4F5353 Content-transfer-encoding: 7bit Precedence: bulk X-Accept-Language: en X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 25 Feb 2004 13:40:51 -0500 From: Peter Vitali Subject: Thanks to Dave Smith Sender: owner-linac-eng@plato.aristotle.net To: "Linac-Engineers, Listserver Mess" X-Accept-Language: en X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f I would like to thank David.Smith@arh.grampian.scot.nhs.uk for replying to Scott Mange's query on a problem regarding Transverse Symmetry increasing on a 2100C. We were seeing an intermittent problem for about 3 months with EXQ1 interlocks on our 21EX. Recently the problem started happening intermittently every day. Different gantry angles, different dose rates, different electron energies. Initially suspected the cable from the ion chamber to the console ( In our 21EX-S SN 16 the cable does not go to a patch panel but directly connects to the cable from the console via a plastic connector hanging in the stand) since it seemed to be gantry position related. When we received Dave's reply to Scott so we tried swapping the Radial Beam Position Servo PCB (EXQ1) with the Transverse (EXQ2) to see if the problem would change. With the Radial BPS PCB in the Transverse slot we then got EXQ2 Interlocks. We also found that the problem was most consistent with using the high energy electrons. Normally we treat using low energy electrons which did not produce the problem very often. Problem was not notice in photon mode. Ordered new relays from Varian and installed the next day. Problem gone. THANKS DAVE!! Even though were thousands of miles away we can help each other. The relay is not in standard spares. The part number is 7210487000. Cost at time from Varian was $69.00. The relay is a Teledyne Relays part number 712-26. You can find information on it on line at Teledynerelays.com under RF and Electromechanical Relays. Peter E. Vitali, CBET Therapeutic Radiological Engineer Yale New Haven Hospital 20 York Street, HRT 22 New Haven, CT. 06504 Phone: (203) 688-2948 FAX: (203) 688-3663 E-mail: peter.vitali@yale.edu As usual, everything I say may be plausibly denied at my employer's convenience...  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HTO00FPH02RUR@hubbard.azu.nl>; Thu, 26 Feb 2004 01:01:41 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004022601013822685 ; Thu, 26 Feb 2004 01:01:38 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id BAA14173; Thu, 26 Feb 2004 01:03:19 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma014140; Thu, 26 Feb 2004 01:02:47 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id QAA17928 for linac-eng-list; Wed, 25 Feb 2004 16:03:26 -0600 (CST) Received: from NGATE01.qe2-hsc.ns.ca (smtp.ccns.nshealth.ca [142.176.37.4]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id QAA17924 for ; Wed, 25 Feb 2004 16:03:24 -0600 (CST) Received: from sdc_dom-MTA by NGATE01.qe2-hsc.ns.ca with Novell_GroupWise; Wed, 25 Feb 2004 18:03:14 -0400 Date: Wed, 25 Feb 2004 18:03:01 -0400 From: Carl Murphy Subject: Re: IAS2 Hard Disk Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.5.1 Content-type: text/plain; charset=US-ASCII Content-disposition: inline Content-transfer-encoding: 7bit Precedence: bulk X-Guinevere: 2.0.13 ; Capital District Hea X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 25 Feb 2004 18:03:01 -0400 From: Carl Murphy Subject: Re: IAS2 Hard Disk Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Content-disposition: inline X-Guinevere: 2.0.13 ; Capital District Hea X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Dave: How's it goin', eh? ... or should I say G'day! You can purchase a IAS2 disk from Varian, which contains the OS-9 operating system. After physical installation, you will have to run the IAS2 database maintenance to update the IAS2 with the scanning modes stored in the Varis Database. In some cases you have to uninstall and re-installl the Portal Vision application. When you run the Portal Vision setup, it will ftp files from the Varis Setup folder to the IAS2. This would be required if the version of IAS2 software on the hard disk preceeds the version of Portal Vision that you have on your server. It would be a safe bet to just install Portal Vision again if you are unsure, it won't do any harm. When you install the new hard drive, be sure to mount it so that the platters are parallel to the ground, or place the IAS2 box so that the disk spins in that orientation. Mounting disks on their sides causes premature failure, contrary to what the manufacturer states. Drop me a line if you need any more info. Good luck! Carl Murphy _________________________________ Carl Murphy, C.E.T. Senior Linear Accelerator Service Technologist Medical Physics Department Nova Scotia Cancer Centre QEII Health Sciences Centre Halifax, Nova Scotia, Canada Email: carl.murphy@cdha.nshealth.ca >>> "Dave Pinchin" Wednesday, February 25, 2004 >>> G'day, Just for interest... Does the IAS2 disk contain IAS2 software or is it used purely for storing aquired data? If it does have software on it what is the replacement proceedure? How does one get a fresh copy of the software? If it is purely a data repository, is there any formatting required on the replacement disk? Ta lots. Dave. ********************************************************************** ** This email and attachments have been scanned for content and viruses and is believed to be clean ** This email or attachments may contain confidential or legally privileged information intended for the sole use of the addressee(s). Any use, redistribution, disclosure, or reproduction of this message, except as intended, is prohibited. If you received this email in error, please notify the sender and remove all copies of the message, including any attachments. Any views or opinions expressed in this email (unless otherwise stated) may not represent those of Canterbury District Health Board ********************************************************************** Confidentiality: This email message may contain confidential information and is intended only for the individual named. If you are not the named addressee you should not disseminate, distribute or copy this email. Please notify the sender immediately by email if you have received this email by mistake and delete this email from your system. Email transmissions cannot be guaranteed to be secure or error free as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or contain viruses. The sender therefore does not accept any liability for errors or omissions in the contents of this message that arise as a result of email transmissions. If verification is required please request a hard copy version.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HTQ005P0V490E@hubbard.azu.nl>; Fri, 27 Feb 2004 14:07:22 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004022714072015199 ; Fri, 27 Feb 2004 14:07:20 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id OAA05149; Fri, 27 Feb 2004 14:09:02 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma005066; Fri, 27 Feb 2004 14:08:30 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id FAA19272 for linac-eng-list; Fri, 27 Feb 2004 05:29:05 -0600 (CST) Received: from armstrong.azu.nl (armstrong.azu.nl [143.121.254.1]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id FAA19268 for ; Fri, 27 Feb 2004 05:29:03 -0600 (CST) Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id MAA17040 for ; Fri, 27 Feb 2004 12:30:14 +0100 (MET) Received: from hubbard.azu.nl(143.121.16.9) by armstrong.azu.nl via smap (V1.3) id xma016950; Fri, 27 Feb 2004 12:29:45 +0100 Received: from ketel1.azu.nl by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with ESMTP id <0HTQ00MJAQIOV3@hubbard.azu.nl> for linac-eng@plato.aristotle.net; Fri, 27 Feb 2004 12:28:02 +0100 (MET) Received: from kriek.azu.nl ([143.121.145.61] helo=kriek) by ketel1.azu.nl with esmtp (Exim 3.35 #1 (Debian)) id 1AwgGD-0001Qe-00 for ; Fri, 27 Feb 2004 12:34:29 +0100 Received: from KRIEK/SpoolDir by kriek (Mercury 1.48); Fri, 27 Feb 2004 12:23:50 -0100 Received: from SpoolDir by KRIEK (Mercury 1.48); Fri, 27 Feb 2004 12:23:42 -0100 Date: Fri, 27 Feb 2004 12:23:42 +0100 From: Eric Westzaan Subject: Elekta IMRT Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: Organization: UMC Utrecht - Radiotherapy MIME-version: 1.0 X-Mailer: Pegasus Mail for Win32 (v3.01d) Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 27 Feb 2004 12:23:42 +0100 From: Eric Westzaan Subject: Elekta IMRT Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Organization: UMC Utrecht - Radiotherapy X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Intended for users of Elekta Sli machines using IMRT with the IMRT Step and Shoot Modkit installed. I have started an investigation according the response time of the linac on an error during IMRT use. Small segments in particular. Segments of 10 monitor units or less. Even if you are not using these small segments I am still interested in the following settings. Item 127 2R error part 135 Item 128 2T error part 135 Item 166 hump error part 135 Item 160 uniformity interlock part 137 These parts contain values which determine the response time of the linac to an error detected by the ionisation chamber. With kind regards, Eric Westzaan Accelerator engineer University Medical Centre Utrecht The Netherlands  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HTR00H042R4TQ@hubbard.azu.nl>; Fri, 27 Feb 2004 16:52:20 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004022716521517325 ; Fri, 27 Feb 2004 16:52:15 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id QAA06934; Fri, 27 Feb 2004 16:53:57 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma006832; Fri, 27 Feb 2004 16:53:31 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id HAA25827 for linac-eng-list; Fri, 27 Feb 2004 07:59:56 -0600 (CST) Received: from drakkar.med.uni-tuebingen.de (noir.zit.medizin.uni-tuebingen.de [134.2.188.1]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id HAA25823 for ; Fri, 27 Feb 2004 07:59:54 -0600 (CST) Received: (from smap@localhost) by drakkar.med.uni-tuebingen.de (8.7.3/8.7.3) id OAA16867; Fri, 27 Feb 2004 14:59:20 +0100 (MEZ) Received: from intwww-fw(192.168.29.50) by drakkar via smap (V1.3) id sma016855; Fri Feb 27 14:59:09 2004 Received: from med.uni-tuebingen.de (ibm8.medphys.rad.med.uni-tuebingen.de [10.11.6.147]) by intwww.zit.med.uni-tuebingen.de (8.8.8+Sun/8.7.3) with ESMTP id OAA16577; Fri, 27 Feb 2004 14:59:08 +0100 (MET) Date: Fri, 27 Feb 2004 14:59:09 +0100 From: "S. Gaupp" Subject: Re: Elekta IMRT In-reply-to: Sender: owner-linac-eng@plato.aristotle.net To: Eric Westzaan , linac-eng@plato.aristotle.net Message-id: <403F4D2D.7090501@med.uni-tuebingen.de> Organization: www.medizin.uni-tuebingen.de/medphys/ MIME-version: 1.0 Content-type: text/plain; format=flowed; charset=ISO-8859-1 Content-transfer-encoding: 7bit Precedence: bulk User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; de-DE; rv:1.4) Gecko/20030619 Netscape/7.1 (ax) X-Accept-Language: de-de, de References: X-Authentication-warning: drakkar.med.uni-tuebingen.de: smap set sender to using -f *** EOOH *** Date: Fri, 27 Feb 2004 14:59:09 +0100 From: "S. Gaupp" Subject: Re: Elekta IMRT In-reply-to: Sender: owner-linac-eng@plato.aristotle.net To: Eric Westzaan , linac-eng@plato.aristotle.net Organization: www.medizin.uni-tuebingen.de/medphys/ X-Accept-Language: de-de, de X-Authentication-warning: drakkar.med.uni-tuebingen.de: smap set sender to using -f According to an german Elekta Eng.'s recomendation all those mentionened parts have normal values of 40 and should be changed to 4 for IMRT treatment. If the Linac's Beam SetUp is ok, no problems should occour. Delivering many small (Dose) segments requires a quick and symetric StartUp of the beam otherwise the dose distribution in the target volume may suffer significantly. A good check on this could be done using a "Schuster Phantom" or PTW's LA48 Fast or 2D-Array. Regards, Stephan Gaupp, Med. Phys. Dept., Tuebingen, Germany.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HTR00L7C6FCZQ@hubbard.azu.nl>; Fri, 27 Feb 2004 18:11:37 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004022718113522887 ; Fri, 27 Feb 2004 18:11:35 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA18287; Fri, 27 Feb 2004 18:13:17 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma018256; Fri, 27 Feb 2004 18:12:46 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id JAA29859 for linac-eng-list; Fri, 27 Feb 2004 09:14:48 -0600 (CST) Received: from mphd-bsd.leeds.ac.uk (mphd-bsd.leeds.ac.uk [129.11.224.45]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id JAA29854 for ; Fri, 27 Feb 2004 09:14:46 -0600 (CST) Received: from medphysics.leeds.ac.uk (mphd1 [129.11.224.65]) by mphd-bsd.leeds.ac.uk (8.12.10/8.11.6) with ESMTP id i1RFEhpp041052; Fri, 27 Feb 2004 15:14:43 +0000 (envelope-from SJW@medphysics.leeds.ac.uk) Received: from MPHD1/SpoolDir by medphysics.leeds.ac.uk (Mercury 1.48); Fri, 27 Feb 2004 15:13:31 +0000 Received: from SpoolDir by MPHD1 (Mercury 1.48); Fri, 27 Feb 2004 15:13:27 +0000 Date: Fri, 27 Feb 2004 15:13:18 +0000 From: Steve Weston Subject: Re: Elekta IMRT In-reply-to: Sender: owner-linac-eng@plato.aristotle.net To: Eric Westzaan , linac-eng@plato.aristotle.net Message-id: <403F5ED6.24342.ADBF81@localhost> MIME-version: 1.0 X-Mailer: Pegasus Mail for Windows (v4.12a) Content-type: text/plain; charset=US-ASCII Content-description: Mail message body Content-transfer-encoding: 7BIT Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 27 Feb 2004 15:13:18 +0000 From: Steve Weston Subject: Re: Elekta IMRT In-reply-to: Sender: owner-linac-eng@plato.aristotle.net To: Eric Westzaan , linac-eng@plato.aristotle.net Content-description: Mail message body X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Eric, There was an Elekta FCO that recommended changing these values from the default of 40 to 4 for IMRT machines (48 to 8 for item 160 part 137). Of course if you do this you have make sure that the linac is optimally tuned and the look up tables are spot on, some ours have been less than perfect and this has led to uniformity errors occuring at odd gantry angles. Steve On 27 Feb 2004 at 12:23, Eric Westzaan wrote: > Intended for users of Elekta Sli machines using IMRT with the IMRT > Step and Shoot Modkit installed. > > I have started an investigation according the response time of the > linac on an error during IMRT use. Small segments in particular. > Segments of 10 monitor units or less. Even if you are not using these > small segments I am still interested in the following settings. > > Item 127 2R error part 135 > Item 128 2T error part 135 > Item 166 hump error part 135 > Item 160 uniformity interlock part 137 > > These parts contain values which determine the response time of the > linac to an error detected by the ionisation chamber. > > With kind regards, > > Eric Westzaan > > Accelerator engineer > University Medical Centre Utrecht > The Netherlands --------------------------------------------------------------------- S.J.Weston, Phone: 0113 3924315 Dept.of Medical Physics, FAX: 0113 3924122 Cookridge Hospital, Leeds Teaching Hospitals Trust. LEEDS LS16 6QB UK ---------------------------------------------------------------------  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HTR00MKC7G44M@hubbard.azu.nl>; Fri, 27 Feb 2004 18:33:42 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004022718333815709 ; Fri, 27 Feb 2004 18:33:38 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA20650; Fri, 27 Feb 2004 18:35:21 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma020568; Fri, 27 Feb 2004 18:34:56 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id JAA00262 for linac-eng-list; Fri, 27 Feb 2004 09:26:16 -0600 (CST) Received: from ismssclu1.umcaz.edu (smtp.umcaz.edu [198.60.159.10]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id JAA00258 for ; Fri, 27 Feb 2004 09:26:14 -0600 (CST) Received: from xchange2k.umcaz.edu ([170.87.50.78]) by ismssclu1 with InterScan Messaging Security Suite; Fri, 27 Feb 2004 08:25:42 -0700 Date: Fri, 27 Feb 2004 08:25:42 -0700 From: "Watters, Dan" Subject: MD2 Collimator Dimensions Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <9AE191E1E625364CA06663EA675208592466A2@xchange2k> MIME-version: 1.0 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_nQ2/73gQNSaIk7IvKVopxA)" Precedence: bulk X-MimeOLE: Produced By Microsoft Exchange V6.0.6487.1 content-class: urn:content-classes:message Thread-Topic: MD2 Collimator Dimensions Thread-Index: AcP9RfWqyJn4si2ORcyg0rC1WcPt0w== X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 27 Feb 2004 08:25:42 -0700 From: "Watters, Dan" Subject: MD2 Collimator Dimensions Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-MimeOLE: Produced By Microsoft Exchange V6.0.6487.1 content-class: urn:content-classes:message Thread-Topic: MD2 Collimator Dimensions Thread-Index: AcP9RfWqyJn4si2ORcyg0rC1WcPt0w== X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This is a multi-part message in MIME format. --Boundary_(ID_nQ2/73gQNSaIk7IvKVopxA) Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: quoted-printable I am looking for a document that specifies the measurements inside the = collimator of our MD2 with MLC. We need the distance from source to top = of MLC leaves, source to jaws, leaf thickness, etc. I have searched our = manuals and cannot find anything that suggests what these measurements = are. If anyone out there has a document that shows this information I = would appreciate hearing from you. =20 Thank you, =20 Dan Watters Radiology Engineering University Medical Center Tucson, Arizona 520-694-7404 Fax 520-694-7007 --Boundary_(ID_nQ2/73gQNSaIk7IvKVopxA) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: quoted-printable
I am = looking for a=20 document that specifies the measurements inside the collimator of our = MD2 with=20 MLC.  We need the distance from source to top of MLC leaves, source = to=20 jaws, leaf thickness, etc.  I have searched our manuals and = cannot=20 find anything that suggests what these measurements are.  If anyone = out=20 there has a document that shows this information I would appreciate = hearing from=20 you.
 
Thank=20 you,
 
Dan=20 Watters
Radiology=20 Engineering
University Medical=20 Center
Tucson,=20 Arizona
520-694-7404
Fax=20 520-694-7007
--Boundary_(ID_nQ2/73gQNSaIk7IvKVopxA)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HTR000AB8XRTR@hubbard.azu.nl>; Fri, 27 Feb 2004 19:05:53 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004022719055120088 ; Fri, 27 Feb 2004 19:05:51 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA24197; Fri, 27 Feb 2004 19:07:32 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma024155; Fri, 27 Feb 2004 19:07:22 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id KAA02280 for linac-eng-list; Fri, 27 Feb 2004 10:11:57 -0600 (CST) Received: from mercy-webappliance.mercycare.org (host-67-128-216-250.mercycare.org [67.128.216.250] (may be forged)) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id KAA02276 for ; Fri, 27 Feb 2004 10:11:55 -0600 (CST) Received: from unknown(67.128.216.250) by mercy-webappliance.mercycare.org via csmap id 24c878c0_6941_11d8_8a8c_003048245f6f_24853; Fri, 27 Feb 2004 10:22:32 -0600 (CST) Date: Fri, 27 Feb 2004 10:11:24 -0600 From: Tyson Long Subject: Wages Sender: owner-linac-eng@plato.aristotle.net To: "List Server (E-mail 2)" Message-id: MIME-version: 1.0 Content-type: text/plain; CHARSET=US-ASCII Content-transfer-encoding: 7bit Precedence: bulk X-MimeOLE: Produced By Microsoft Exchange V6.0.6249.0 content-class: urn:content-classes:message Thread-Topic: Wages Thread-Index: AcP9TFi9RqXqxFdoTaGBr2Xq26Z+7w== X-NAIMIME-Disclaimer: 1 X-NAIMIME-Modified: 1 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 27 Feb 2004 10:11:24 -0600 From: Tyson Long Subject: Wages Sender: owner-linac-eng@plato.aristotle.net To: "List Server (E-mail 2)" X-MimeOLE: Produced By Microsoft Exchange V6.0.6249.0 content-class: urn:content-classes:message Thread-Topic: Wages Thread-Index: AcP9TFi9RqXqxFdoTaGBr2Xq26Z+7w== X-NAIMIME-Disclaimer: 1 X-NAIMIME-Modified: 1 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f I know that this question has been asked before but I have not seen any response. Our oncology department is looking at relying on me for service of our two accelerators and one simulator. We currently have full contracts from the manufacture. My question is what is the average salary of somebody who would do the maintenance of the machines in a hospital setting? Please email me directly or call me at the number below. Thanks for your time. Tyson Long Biomedical Equipment Specialist Mercy Medical Center Cedar Rapids, IA 52402 319-369-4532 Confidentiality Notice: This message and any attachments may contain confidential and privileged information that is protected by law. The information contained herein is transmitted for the sole use of the intended recipient(s). If you are not the intended recipient or designated agent of the recipient of such information, you are hereby notified that any use, dissemination, copying or retention of this email or the information contained herein is strictly prohibited and may subject you to penalties under federal and/or state law. If you received this email in error, please notify the sender immediately and permanently delete this email.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HTW0015DZZQ8P@hubbard.azu.nl>; Mon, 1 Mar 2004 21:38:16 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004030121381410342 ; Mon, 01 Mar 2004 21:38:14 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id VAA03013; Mon, 01 Mar 2004 21:39:57 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma002984; Mon, 01 Mar 2004 21:39:46 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id MAA06385 for linac-eng-list; Mon, 01 Mar 2004 12:12:53 -0600 (CST) Received: from tmh.tmc.edu (mailgw1.tmh.tmc.edu [128.249.194.151]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id MAA06381 for ; Mon, 01 Mar 2004 12:12:51 -0600 (CST) Received: from ([10.120.62.235]) by mailgw1.tmh.tmc.edu with ESMTP ; Mon, 01 Mar 2004 12:12:28 -0600 (CST) Received: by exch5.tmh.tmc.edu with Internet Mail Service (5.5.2657.72) id ; Mon, 01 Mar 2004 12:12:28 -0600 Date: Mon, 01 Mar 2004 12:12:18 -0600 From: "Segovia, Luis E." Subject: Siemens Conventional CCPC18 Sender: owner-linac-eng@plato.aristotle.net To: Linac List Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: MULTIPART/MIXED; BOUNDARY="Boundary_(ID_OzsP3eXqPXqgELucaDFMEw)" Precedence: bulk X-MS-TNEF-Correlator: X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 01 Mar 2004 12:12:18 -0600 From: "Segovia, Luis E." Subject: Siemens Conventional CCPC18 Sender: owner-linac-eng@plato.aristotle.net To: Linac List X-MS-TNEF-Correlator: X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_OzsP3eXqPXqgELucaDFMEw) Content-type: text/plain; CHARSET=US-ASCII Hello list, I am having a very strange problem with a Siemens KD (conventional). Problem: T&P interlock. Caused by CC Pc18 U5 damaged. It occurs mostly in the mornings (9 out of 10 times) U5 is a LM348 OP-amp which acts as a comparator and produces an interlock. The following has taken place: 1. About 6 weeks ago I replaced U5. the problem came back several times throughout the week so I kept replacing U5. 2. I finally replaced PC18 with a brand new board from Siemens. 3. The equipment worked great for about 3 weeks. 4. Yes gentlemen (and Ladies), I am having the same problem with the new PC18. I mean exactly the same. 5. I come every morning and test. I usually have to replace U5. After this, the problem does not come back until the next morning. With a couple of exceptions. Today I had to replace the chip twice. Last week it did not fail for 3 days. I have checked grounds, power supplies, connectors, mother boards, etc. I am coming back tonight to evaluate some more. I beleive that something in my control console is damagin the chip (two PCs with the same problem?). I could try and protect the chip from the power supplies but that would mean adding components to PC 18 with all its implications. Has anyone had this problem before? Thanks Luis ----------------------------------------- ____________________________________________________________________________________ ****CONFIDENTIALITY NOTICE**** This e-mail is the property of The Methodist Hospital and/or its relevant affiliates and may contain confidential and privileged material for the sole use of the intended recipient(s). Any review, use, distribution or disclosure by others is strictly prohibited. If you are not the intended recipient(or authorized to receive for the recipient), please contact the sender and delete all copies of the message. Thank you. --Boundary_(ID_OzsP3eXqPXqgELucaDFMEw) Content-type: application/ms-tnef Content-transfer-encoding: base64 eJ8+Ih0SAQaQCAAEAAAAAAABAAEAAQeQBgAIAAAA5AQAAAAAAADoAAEIgAcAGAAAAElQTS5NaWNy b3NvZnQgTWFpbC5Ob3RlADEIAQWAAwAOAAAA1AcDAAEADAAMABIAAQAKAQEggAMADgAAANQHAwAB AAwADAAbAAEAEwEBCYABACEAAABFQ0ExQzU4Mjc3NkJEODExQUNEMDAwNTAwNDhCMUU2OAAfBwEE gAEAHAAAAFNpZW1lbnMgQ29udmVudGlvbmFsIENDUEMxOACGCQENgAQAAgAAAAIAAgABA5AGAHQI AAApAAAACwACAAEAAABAADkAEOymu7j/wwEeAHAAAQAAABwAAABTaWVtZW5zIENvbnZlbnRpb25h bCBDQ1BDMTgAAgFxAAEAAAAWAAAAAcP/uLqngsWh+Wt3Edis0ABQBIseaAAAHgAxQAEAAAAJAAAA TFNFR09WSUEAAAAAAwAaQAAAAAAeADBAAQAAAAkAAABMU0VHT1ZJQQAAAAADABlAAAAAAAIBCRAB AAAAHwQAABsEAAAbBgAATFpGdXvQD/oDAAoAcmNwZzEyNRYyAPgLYG4OEDAzM50B9yACpAPjAgBj aArAYHNldDAgBxMCgH0ZCoF1YwBQCwN1bG6FAiBlC6YgSGVsCQDkIGwEAHQsCqIKhAqAoEkgYW0g EQB2C4CSZxUwIHYEkHkgFDBicg8RZSBwA2ACYGXTFVAD8HRoFdFTCJAHgKEGMUtEICgFoG4WAE0C MGkCIAdAKS4UalCBFuQ6IFQmUCALgAZ0BJAJAGNrLiAgiENhdREwZCBiFjAQQ0MgUBJAOCBVqDUg ZBVAYRagZBuB9kkFQBtQYwhwBCAEYBQw9mwWMAuAIBdwFrAEYASgUxWhBCAoOR3AdR2xZu4gD0Ae 0AdyKRRqHNEEACEV0UxNMzQcsE9Qai0VQHAXQGgN4BeBYz50IeEh4gWgIsAKwGF07wWxAHAcABbR ZBIwB5EDkfsa+BRqVB7xAhAT0QPwFbH3EQAEIAGQawnwFsALYCUwejoUajEbgRFwBuAf8TbrF0AJ 4Gsh4WcT8BUgCXC/KIMcABzQG4Ee4hbWYxVA1RawYgDQaxZAZRYBB0DHIHQe0QNgdWdoH+Ie4v8q chZAKvIoQAUxKzQVoivB7RRqMimyFSBmC4AHQB6B2Ss3UEMcoRdVYhZxHAD/EwAH4AbgCxEnMANh F7YZW8YzG4EnAmVxdQUgF/H9BUB3BbAoQBwACcEkUCcxWySBKgMzKmQZWzQbgVlfB5EWoAIwFxEo USgkokzsYWQIkCDALCsBFUge4v5zLOIW2x7iNGIzQh1yHjDzOEADoGV4I1EegT0mGVv/K9IVICPx NvEWAx8lJJMbEPcUMD9DG9B1MmMVcRawJGD7KyYrtEEBgASQHtEEADxA+SwaZG8HkRLgBUBCEy0j 7nUY0S3RPpN4BUAfJRuB9lcXZAWgdQtQFrAgIT/gvyUwBTAY8TWwNrEEcGEWMP5JFGQpwRuQEQBD YUT4HuL/EPAFIB7QA/AlMBuBO9AUMLcvNBdgHPBpNEFHwWYLcP8DIDiCOSBMITW8FSBEkxDw3wWQ N+QIYCSwRnFwJ4BGEf1EIHALUDwBPEAYgRMAI2D/BbBGcQRgHuEFwDSjRnERQP5jP0MVQSPxFaIt IyRgAwD/LqAu4RPwLYAHQEQwGxAvgS8s8R8hQNwVIGITwGVpf0SyEQAFQFkSRkEVsR6xbf8WMBiB FmAG8FSiL5BK0SHR9x0DHrVOUyhOoBPwM0AEIPs+Nz1qPxlAQdQSwENhFiH/JKUbECNgTgg1AywT U8scEP8u0zhRN7BhEj+TO+A78BWx/yPyEvECMCgBXtIgQDN2E9B/T7EEIAdwVEEs0EuEFGpI+SOi bnkS8U0URlEWx1qQeTiBZT8mTABwKqAUakwXNzBs9RHxAG6gAAsABoAIIAYAAAAAAMAAAAAAAABG AAAAAAOFAAAAAAAAAwAIgAggBgAAAAAAwAAAAAAAAEYAAAAAEIUAAAAAAAADAAGACCAGAAAAAADA AAAAAAAARgAAAABShQAA8xUAAAMABIAIIAYAAAAAAMAAAAAAAABGAAAAAAGFAAAAAAAAHgACgAgg BgAAAAAAwAAAAAAAAEYAAAAAVIUAAAEAAAAFAAAAOC4wNAAAAAALAAeACCAGAAAAAADAAAAAAAAA RgAAAAAOhQAAAAAAAAMACoAIIAYAAAAAAMAAAAAAAABGAAAAABGFAAAAAAAAAwAJgAggBgAAAAAA wAAAAAAAAEYAAAAAGIUAAAAAAAAeAAuACCAGAAAAAADAAAAAAAAARgAAAAA2hQAAAQAAAAEAAAAA AAAAHgAMgAggBgAAAAAAwAAAAAAAAEYAAAAAN4UAAAEAAAABAAAAAAAAAB4ADYAIIAYAAAAAAMAA AAAAAABGAAAAADiFAAABAAAAAQAAAAAAAAADAPE/CQQAAAMA/T/kBAAAAwAmAAAAAAADADYAAAAA AAMAgBD/////AgFHAAEAAAAtAAAAYz1VUzthPSA7cD1NSENTO2w9RVhDSDItMDQwMzAxMTgxMjE4 Wi03MDg5NTEAAAAAHgA4QAEAAAAJAAAATFNFR09WSUEAAAAAHgA5QAEAAAAJAAAATFNFR09WSUEA AAAAQAAHMJiOpLu4/8MBQAAIMNAFJ8G4/8MBHgA9AAEAAAABAAAAAAAAAB4AHQ4BAAAAHAAAAFNp ZW1lbnMgQ29udmVudGlvbmFsIENDUEMxOAAeADUQAQAAAD0AAAA8QkFCQ0VBQzhEQjlEMDQ0QTlE MzYyOUI5QjEzOENDNzQwRkE0ODlCMEBleGNoMi50bWgudG1jLmVkdT4AAAAACwApAAAAAAALACMA AAAAAAMABhCA5BOGAwAHEO8DAAADABAQAAAAAAMAERAAAAAAHgAIEAEAAABlAAAASEVMTE9MSVNU LElBTUhBVklOR0FWRVJZU1RSQU5HRVBST0JMRU1XSVRIQVNJRU1FTlNLRChDT05WRU5USU9OQUwp UFJPQkxFTTpUJlBJTlRFUkxPQ0tDQVVTRURCWUNDUEMxOAAAAAACAX8AAQAAAD0AAAA8QkFCQ0VB QzhEQjlEMDQ0QTlEMzYyOUI5QjEzOENDNzQwRkE0ODlCMEBleGNoMi50bWgudG1jLmVkdT4AAAAA tQM= --Boundary_(ID_OzsP3eXqPXqgELucaDFMEw)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HTX005OY73TZW@hubbard.azu.nl>; Tue, 2 Mar 2004 00:11:54 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004030200115115213 ; Tue, 02 Mar 2004 00:11:51 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id AAA20600; Tue, 02 Mar 2004 00:13:36 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma020594; Tue, 02 Mar 2004 00:13:25 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id PAA09210 for linac-eng-list; Mon, 01 Mar 2004 15:04:12 -0600 (CST) Received: from PHSXCHICI3.partners.org (phsxchici3.mgh.harvard.edu [132.183.118.13]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id PAA09206 for ; Mon, 01 Mar 2004 15:04:11 -0600 (CST) Received: by phsxchici3.mgh.harvard.edu with Internet Mail Service (5.5.2657.72) id ; Mon, 01 Mar 2004 16:04:02 -0500 Date: Mon, 01 Mar 2004 16:03:37 -0500 From: "Maddox, Buford J" Subject: RE: Siemens Conventional CCPC18 Sender: owner-linac-eng@plato.aristotle.net To: "'Segovia, Luis E.'" , Linac List Message-id: <36298D09ED1AD311B4DC0008C7F4D4E11146638C@phsexch6.partners.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 01 Mar 2004 16:03:37 -0500 From: "Maddox, Buford J" Subject: RE: Siemens Conventional CCPC18 Sender: owner-linac-eng@plato.aristotle.net To: "'Segovia, Luis E.'" , Linac List X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Forgot to add that static electricity is murder on those old consoles. Jerry > -----Original Message----- > From: owner-linac-eng@plato.aristotle.net > [mailto:owner-linac-eng@plato.aristotle.net] On Behalf Of Segovia, Luis E. > Sent: Monday, March 01, 2004 1:12 PM > To: Linac List > Subject: Siemens Conventional CCPC18 > > Hello list, > > I am having a very strange problem with a Siemens KD (conventional). > > Problem: T&P interlock. Caused by CC Pc18 U5 damaged. It occurs mostly in > the mornings (9 out of 10 times) > > U5 is a LM348 OP-amp which acts as a comparator and produces an interlock. > > The following has taken place: > > 1. About 6 weeks ago I replaced U5. the problem came back several times > throughout the week so I kept replacing U5. > > 2. I finally replaced PC18 with a brand new board from Siemens. > > 3. The equipment worked great for about 3 weeks. > > 4. Yes gentlemen (and Ladies), I am having the same problem with the new > PC18. I mean exactly the same. > > 5. I come every morning and test. I usually have to replace U5. After this, > the problem does not come back until the next morning. With a couple of > exceptions. Today I > had to replace the chip twice. Last week it did not fail for 3 days. > > I have checked grounds, power supplies, connectors, mother boards, etc. I am > coming back tonight to evaluate some more. > > I beleive that something in my control console is damagin the chip (two PCs > with the same problem?). I could try and protect the chip from the power > supplies but that would mean adding components to PC 18 with all its > implications. > > Has anyone had this problem before? > > Thanks > > Luis > ----------------------------------------- > ______________________________________________________________________________ > ______ > ****CONFIDENTIALITY NOTICE**** > This e-mail is the property of The Methodist Hospital and/or its relevant > affiliates and may contain confidential and privileged material for the sole > use of the intended recipient(s). Any review, use, distribution or disclosure > by others is strictly prohibited. If you are not the intended recipient(or > authorized to receive for the recipient), please contact the sender and delete > all copies of the message. Thank you.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HTX0091KAHYSW@hubbard.azu.nl>; Tue, 2 Mar 2004 01:25:12 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004030201250900021 ; Tue, 02 Mar 2004 01:25:09 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id BAA27197; Tue, 02 Mar 2004 01:26:53 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma027170; Tue, 02 Mar 2004 01:26:42 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id PAA09187 for linac-eng-list; Mon, 01 Mar 2004 15:03:10 -0600 (CST) Received: from PHSXCHICI3.partners.org (phsxchici3.mgh.harvard.edu [132.183.118.13]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id PAA09183 for ; Mon, 01 Mar 2004 15:03:08 -0600 (CST) Received: by phsxchici3.mgh.harvard.edu with Internet Mail Service (5.5.2657.72) id ; Mon, 01 Mar 2004 16:02:59 -0500 Date: Mon, 01 Mar 2004 16:02:32 -0500 From: "Maddox, Buford J" Subject: RE: Siemens Conventional CCPC18 Sender: owner-linac-eng@plato.aristotle.net To: "'Segovia, Luis E.'" , Linac List Message-id: <36298D09ED1AD311B4DC0008C7F4D4E11146638B@phsexch6.partners.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 01 Mar 2004 16:02:32 -0500 From: "Maddox, Buford J" Subject: RE: Siemens Conventional CCPC18 Sender: owner-linac-eng@plato.aristotle.net To: "'Segovia, Luis E.'" , Linac List X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f What kills a 348? One ps bad or overvoltage on inputs, I would guess. Perhaps a cable is shorting another wire with 15 or 24v into the op amp input. But that would not be limited to am. The +/- 15v ps, in fact various of those black potted power supplies, often developed a morning sickness where they were ok for a bit, then (usually the negative) went down, then after a while it might be ok again. The thick ones failed more often. I would change the +/- 15v console ps. good luck, Jerry > -----Original Message----- > From: owner-linac-eng@plato.aristotle.net > [mailto:owner-linac-eng@plato.aristotle.net] On Behalf Of Segovia, Luis E. > Sent: Monday, March 01, 2004 1:12 PM > To: Linac List > Subject: Siemens Conventional CCPC18 > > Hello list, > > I am having a very strange problem with a Siemens KD (conventional). > > Problem: T&P interlock. Caused by CC Pc18 U5 damaged. It occurs mostly in > the mornings (9 out of 10 times) > > U5 is a LM348 OP-amp which acts as a comparator and produces an interlock. > > The following has taken place: > > 1. About 6 weeks ago I replaced U5. the problem came back several times > throughout the week so I kept replacing U5. > > 2. I finally replaced PC18 with a brand new board from Siemens. > > 3. The equipment worked great for about 3 weeks. > > 4. Yes gentlemen (and Ladies), I am having the same problem with the new > PC18. I mean exactly the same. > > 5. I come every morning and test. I usually have to replace U5. After this, > the problem does not come back until the next morning. With a couple of > exceptions. Today I > had to replace the chip twice. Last week it did not fail for 3 days. > > I have checked grounds, power supplies, connectors, mother boards, etc. I am > coming back tonight to evaluate some more. > > I beleive that something in my control console is damagin the chip (two PCs > with the same problem?). I could try and protect the chip from the power > supplies but that would mean adding components to PC 18 with all its > implications. > > Has anyone had this problem before? > > Thanks > > Luis > ----------------------------------------- > ______________________________________________________________________________ > ______ > ****CONFIDENTIALITY NOTICE**** > This e-mail is the property of The Methodist Hospital and/or its relevant > affiliates and may contain confidential and privileged material for the sole > use of the intended recipient(s). Any review, use, distribution or disclosure > by others is strictly prohibited. If you are not the intended recipient(or > authorized to receive for the recipient), please contact the sender and delete > all copies of the message. Thank you.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HU200INH6F06M@hubbard.azu.nl>; Thu, 4 Mar 2004 16:45:03 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004030416445529009 ; Thu, 04 Mar 2004 16:44:55 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id QAA03908; Thu, 04 Mar 2004 16:46:41 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma003728; Thu, 04 Mar 2004 16:45:54 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id HAA13135 for linac-eng-list; Thu, 04 Mar 2004 07:46:08 -0600 (CST) Received: from twmms2.carebridge.net (twmms2.carebridge.net [139.177.230.4]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id HAA13131 for ; Thu, 04 Mar 2004 07:46:06 -0600 (CST) Received: from 32.72.1.9 by twmms2.carebridge.net with SMTP (SMTP Relay) ; Thu, 04 Mar 2004 08:44:50 -0500 Received: from exchange01.phoebe.com ([129.47.10.151]) by smtp2k.phoebe.com (SAVSMTP 3.1.0.29) with SMTP id M2004030408444414883 for ; Thu, 04 Mar 2004 08:44:44 -0500 Date: Thu, 04 Mar 2004 08:44:45 -0500 From: "Eason, Guy" Subject: Professional Engineering Society? Sender: owner-linac-eng@plato.aristotle.net To: "Linac-Engineering (E-mail)" Message-id: MIME-version: 1.0 Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 8bit Precedence: bulk X-Server-Uuid: 7658BD1E-3A04-43BE-BEFB-5C6732FC7245 content-class: urn:content-classes:message X-MimeOLE: Produced By Microsoft Exchange V6.0.6487.1 Thread-Topic: Professional Engineering Society? Thread-Index: AcQB7tpUQ6F/7cr+QduRrfwUdyAYfw== X-WSS-ID: 6C59ED581FG6754138-01-01 X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id HAA13132 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 04 Mar 2004 08:44:45 -0500 From: "Eason, Guy" Subject: Professional Engineering Society? Sender: owner-linac-eng@plato.aristotle.net To: "Linac-Engineering (E-mail)" X-Server-Uuid: 7658BD1E-3A04-43BE-BEFB-5C6732FC7245 content-class: urn:content-classes:message X-MimeOLE: Produced By Microsoft Exchange V6.0.6487.1 Thread-Topic: Professional Engineering Society? Thread-Index: AcQB7tpUQ6F/7cr+QduRrfwUdyAYfw== X-WSS-ID: 6C59ED581FG6754138-01-01 X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id HAA13132 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Is there still a Professional Eng. Society for Linear Engineers? Please send info. Not to the web site, it hasn't been updated in ages. Guy Eason Radiation Oncology Phoebe Putney Memorial Hospital Albany, GA (229) 312-2280  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HU20026TDBSMR@hubbard.azu.nl>; Thu, 4 Mar 2004 19:14:17 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004030419141609458 ; Thu, 04 Mar 2004 19:14:16 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA27336; Thu, 04 Mar 2004 19:16:01 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma027299; Thu, 04 Mar 2004 19:15:31 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id KAA14940 for linac-eng-list; Thu, 04 Mar 2004 10:09:44 -0600 (CST) Received: from web40706.mail.yahoo.com (web40706.mail.yahoo.com [66.218.78.163]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id KAA14936 for ; Thu, 04 Mar 2004 10:09:42 -0600 (CST) Received: from [163.246.197.21] by web40706.mail.yahoo.com via HTTP; Thu, 04 Mar 2004 08:09:10 -0800 (PST) Date: Thu, 04 Mar 2004 08:09:10 -0800 (PST) From: Russ Olsen Subject: Job Posting - Atlanta, GA, USA Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <20040304160910.58648.qmail@web40706.mail.yahoo.com> MIME-version: 1.0 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_AxVkWKa4bzOz9mDY4i/6TQ)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 04 Mar 2004 08:09:10 -0800 (PST) From: Russ Olsen Subject: Job Posting - Atlanta, GA, USA Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f --Boundary_(ID_AxVkWKa4bzOz9mDY4i/6TQ) Content-type: text/plain; charset=us-ascii Content-transfer-encoding: quoted-printable X-MIME-Autoconverted: from 8bit to quoted-printable by plato.aristotle.net id KAA14940 Emory University, Atlanta, Georgia, USA has this job listing: http://emory.hr.emory.edu/careers.nsf/e5f451c34e5ae1d585256d99000010ac/ca= bdfac5b635f60885256e430053eecb?OpenDocument =20 If interested, please apply online or you can forward a resume to me at R= SE@radonc.emory.org.=20 =20 Regards,=20 Russell Olsen MSCE Systems Engineer Emory University School of Medicine Atlanta, GA --------------------------------- Do you Yahoo!? Yahoo! Search - Find what you=92re looking for faster. --Boundary_(ID_AxVkWKa4bzOz9mDY4i/6TQ) Content-type: text/html; charset=us-ascii Content-transfer-encoding: quoted-printable X-MIME-Autoconverted: from 8bit to quoted-printable by plato.aristotle.net id KAA14940
Emory University, Atlanta, Geor= gia, USA has this job listing:
 
If interested, please apply onl= ine or you can forward a resume to me at RSE@radonc.emory.org<= /FONT>.
 
Regards,
Russell Olsen MSCE
Systems Engineer
Emory University School of Medi= cine
Atlanta, GA

Do you Yahoo!?
Yahoo! Search - Find what you=92re looking for faster. --Boundary_(ID_AxVkWKa4bzOz9mDY4i/6TQ)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HU2004MYGUG8D@hubbard.azu.nl>; Thu, 4 Mar 2004 20:30:18 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004030420301601302 ; Thu, 04 Mar 2004 20:30:16 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id UAA06516; Thu, 04 Mar 2004 20:32:01 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma006492; Thu, 04 Mar 2004 20:31:38 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id LAA16065 for linac-eng-list; Thu, 04 Mar 2004 11:26:48 -0600 (CST) Received: from tmh.tmc.edu (mailgw1.tmh.tmc.edu [128.249.194.151]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id LAA16061 for ; Thu, 04 Mar 2004 11:26:47 -0600 (CST) Received: from ([10.120.62.235]) by mailgw1.tmh.tmc.edu with ESMTP ; Thu, 04 Mar 2004 11:26:11 -0600 (CST) Received: by exch5.tmh.tmc.edu with Internet Mail Service (5.5.2657.72) id ; Thu, 04 Mar 2004 11:26:11 -0600 Date: Thu, 04 Mar 2004 11:26:10 -0600 From: "Segovia, Luis E." Subject: Conventional Siemens KD CCPC18-U5 feedback Sender: owner-linac-eng@plato.aristotle.net To: Linac List Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: MULTIPART/MIXED; BOUNDARY="Boundary_(ID_29DkofhjRFnxDkUBAv4NbA)" Precedence: bulk X-MS-TNEF-Correlator: X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 04 Mar 2004 11:26:10 -0600 From: "Segovia, Luis E." Subject: Conventional Siemens KD CCPC18-U5 feedback Sender: owner-linac-eng@plato.aristotle.net To: Linac List X-MS-TNEF-Correlator: X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_29DkofhjRFnxDkUBAv4NbA) Content-type: text/plain; CHARSET=US-ASCII Last night I replaced the power supply (+/- 15V 500ma). This morning we had no problems. I think Richard and Jerry hit it in the nose. Thanks. I believe the problem occured only when the supply was cold and it was turned on. I had monitor it with the oscilloscope by turning it off and then on (not cold). I will say no more unless it does it again. Thanks y'all Luis ----------------------------------------- ____________________________________________________________________________________ ****CONFIDENTIALITY NOTICE**** This e-mail is the property of The Methodist Hospital and/or its relevant affiliates and may contain confidential and privileged material for the sole use of the intended recipient(s). Any review, use, distribution or disclosure by others is strictly prohibited. If you are not the intended recipient(or authorized to receive for the recipient), please contact the sender and delete all copies of the message. Thank you. --Boundary_(ID_29DkofhjRFnxDkUBAv4NbA) Content-type: application/ms-tnef Content-transfer-encoding: base64 eJ8+IgwRAQaQCAAEAAAAAAABAAEAAQeQBgAIAAAA5AQAAAAAAADoAAEIgAcAGAAAAElQTS5NaWNy b3NvZnQgTWFpbC5Ob3RlADEIAQWAAwAOAAAA1AcDAAQACwAaAAoABAAVAQEggAMADgAAANQHAwAE AAsAGgALAAQAFgEBCYABACEAAAAzNDc5MDFBNkNDNkREODExQUNEMDAwNTAwNDhCMUU2OAAMBwEE gAEAKwAAAENvbnZlbnRpb25hbCBTaWVtZW5zIEtEIENDUEMxOC1VNSBmZWVkYmFjawAxDgENgAQA AgAAAAIAAgABA5AGABwGAAApAAAACwACAAEAAABAADkAEMhgyQ0CxAEeAHAAAQAAACsAAABDb252 ZW50aW9uYWwgU2llbWVucyBLRCBDQ1BDMTgtVTUgZmVlZGJhY2sAAAIBcQABAAAAFgAAAAHEAg3I WKYBeThtzBHYrNAAUASLHmgAAB4AMUABAAAACQAAAExTRUdPVklBAAAAAAMAGkAAAAAAHgAwQAEA AAAJAAAATFNFR09WSUEAAAAAAwAZQAAAAAACAQkQAQAAAKUBAAChAQAAHwIAAExaRnWans3uAwAK AHJjcGcxMjUWMgD4C2BuDhAwMzOdAfcgAqQD4wIAY2gKwGBzZXQwIAcTAoB9GQqBdWMAUAsDdWxu hQIgZQumIExhcwVAyQMAZ2gFQEkgCXALUQJjCYAgdGhlIHCEb3cEkCBzdXALUAB5ICgrLy0gMUA1 ViA1MDAAwCmgLiAgVGgEACAEYNMEoAuAZyAVcCARABTwDxLgFUADYAJgZW1zLr8KogqECoAUYBUQ C4BrB/BfDeARARTwAHAU8EoEkHL/FgAXUAVAG7IDoBUSEuARMIsXEwBwaxkuYmVsCJAOdhUwFRMY xCBvY2PvCHAU4QIgFfF3FSAcJBW1encTwCAI4RrkG7EhUnT/CHATAB/iFxEUYBhCBGADAG50BbEi IhuwaBUDHJBjpwMQCQAE8G9wFTBiFgD3IpIX0huxbwEgGvMVEQOg/wIgFhAS4AVAIZIXABlMA/B7 JTAVoGEWABiBF5EVMHXPIBAHkAQgG7FkbweRG7EcYWcLcRk7HPQgeSfnB0AJUBlZTHUEABlEEfEC AC7gAAAACwAGgAggBgAAAAAAwAAAAAAAAEYAAAAAA4UAAAAAAAADAAiACCAGAAAAAADAAAAAAAAA RgAAAAAQhQAAAAAAAAMAAYAIIAYAAAAAAMAAAAAAAABGAAAAAFKFAADzFQAAAwAEgAggBgAAAAAA wAAAAAAAAEYAAAAAAYUAAAAAAAAeAAKACCAGAAAAAADAAAAAAAAARgAAAABUhQAAAQAAAAUAAAA4 LjA0AAAAAAsAB4AIIAYAAAAAAMAAAAAAAABGAAAAAA6FAAAAAAAAAwAKgAggBgAAAAAAwAAAAAAA AEYAAAAAEYUAAAAAAAADAAmACCAGAAAAAADAAAAAAAAARgAAAAAYhQAAAAAAAB4AC4AIIAYAAAAA AMAAAAAAAABGAAAAADaFAAABAAAAAQAAAAAAAAAeAAyACCAGAAAAAADAAAAAAAAARgAAAAA3hQAA AQAAAAEAAAAAAAAAHgANgAggBgAAAAAAwAAAAAAAAEYAAAAAOIUAAAEAAAABAAAAAAAAAAMA8T8J BAAAAwD9P+QEAAADACYAAAAAAAMANgAAAAAAAwCAEP////8CAUcAAQAAAC0AAABjPVVTO2E9IDtw PU1IQ1M7bD1FWENIMi0wNDAzMDQxNzI2MTBaLTc1NjYxMgAAAAAeADhAAQAAAAkAAABMU0VHT1ZJ QQAAAAAeADlAAQAAAAkAAABMU0VHT1ZJQQAAAABAAAcwTtxUyQ0CxAFAAAgwKSxwyQ0CxAEeAD0A AQAAAAEAAAAAAAAAHgAdDgEAAAArAAAAQ29udmVudGlvbmFsIFNpZW1lbnMgS0QgQ0NQQzE4LVU1 IGZlZWRiYWNrAAAeADUQAQAAAD0AAAA8QkFCQ0VBQzhEQjlEMDQ0QTlEMzYyOUI5QjEzOENDNzQw RkE0OEIzRUBleGNoMi50bWgudG1jLmVkdT4AAAAACwApAAAAAAALACMAAAAAAAMABhA6kzVLAwAH ECABAAADABAQAAAAAAMAERAAAAAAHgAIEAEAAABlAAAATEFTVE5JR0hUSVJFUExBQ0VEVEhFUE9X RVJTVVBQTFkoKy8tMTVWNTAwTUEpVEhJU01PUk5JTkdXRUhBRE5PUFJPQkxFTVNJVEhJTktSSUNI QVJEQU5ESkVSUllISVRJVElOVAAAAAACAX8AAQAAAD0AAAA8QkFCQ0VBQzhEQjlEMDQ0QTlEMzYy OUI5QjEzOENDNzQwRkE0OEIzRUBleGNoMi50bWgudG1jLmVkdT4AAAAA7Sc= --Boundary_(ID_29DkofhjRFnxDkUBAv4NbA)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HU2009L7MSFHR@hubbard.azu.nl>; Thu, 4 Mar 2004 22:38:41 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004030422383907152 ; Thu, 04 Mar 2004 22:38:39 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id WAA20271; Thu, 04 Mar 2004 22:40:24 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma020213; Thu, 04 Mar 2004 22:40:00 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id NAA18989 for linac-eng-list; Thu, 04 Mar 2004 13:37:21 -0600 (CST) Received: from outgoing-smtp1.aurora.org (aurora-fw2.aurorahealthcare.org [198.177.95.129]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id NAA18985 for ; Thu, 04 Mar 2004 13:37:18 -0600 (CST) Received: from heiaisas41.aurora.org(10.129.128.82) by outgoing-smtp1.aurora.org via csmap id dd92528e_6e11_11d8_9965_00304811c7cf_12793; Thu, 04 Mar 2004 19:26:41 +0000 (UTC) Date: Thu, 04 Mar 2004 13:36:35 -0600 From: dale.dornacker@aurora.org Subject: Linac 2100 C/D ETR Couch Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Lotus Notes Release 5.0.8 June 18, 2001 Content-type: text/plain; charset=US-ASCII Precedence: bulk X-MIMETrack: Serialize by Router on HEIAISAS41/SRV/AHC(Release 6.0.2CF2|July 23, 2003) at 03/04/2004 13:36:41 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 04 Mar 2004 13:36:35 -0600 From: dale.dornacker@aurora.org Subject: Linac 2100 C/D ETR Couch Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-MIMETrack: Serialize by Router on HEIAISAS41/SRV/AHC(Release 6.0.2CF2|July 23, 2003) at 03/04/2004 13:36:41 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Linac 2100 C/D ETR Couch. Does anyone recall the fix for the table top locks unlocking on there own. Thanks, Dale  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HU200EIZT3A9I@hubbard.azu.nl>; Fri, 5 Mar 2004 00:54:47 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004030500544515053 ; Fri, 05 Mar 2004 00:54:45 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id AAA03681; Fri, 05 Mar 2004 00:56:31 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma003648; Fri, 05 Mar 2004 00:56:26 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id QAA24748 for linac-eng-list; Thu, 04 Mar 2004 16:03:40 -0600 (CST) Received: from email.med.yale.edu (email.med.yale.edu [130.132.232.16]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id QAA24744 for ; Thu, 04 Mar 2004 16:03:38 -0600 (CST) Received: from yale.edu (vitalip.med.yale.edu [130.132.213.170]) by email.med.yale.edu (PMDF V6.1-1 #30873) with ESMTP id <0HU20QGLENXSPB@email.med.yale.edu> for linac-eng@plato.aristotle.net; Thu, 04 Mar 2004 17:03:32 -0500 (EST) Date: Thu, 04 Mar 2004 17:05:41 -0500 From: Peter Vitali Subject: Re: Linac 2100 C/D ETR Couch Sender: owner-linac-eng@plato.aristotle.net To: dale.dornacker@aurora.org Cc: linac-eng@plato.aristotle.net Message-id: <4047A7B0.822F839@yale.edu> MIME-version: 1.0 X-Mailer: Mozilla 4.76 (Macintosh; U; PPC) Content-type: text/plain; charset=us-ascii; x-mac-type=54455854; x-mac-creator=4D4F5353 Content-transfer-encoding: 7bit Precedence: bulk X-Accept-Language: en References: X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 04 Mar 2004 17:05:41 -0500 From: Peter Vitali Subject: Re: Linac 2100 C/D ETR Couch Sender: owner-linac-eng@plato.aristotle.net To: dale.dornacker@aurora.org Cc: linac-eng@plato.aristotle.net X-Accept-Language: en X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Dale: There is two possibilities. One: The brake on the motors Lateral and Longitudinal are defective. Two: There is a signal being sent to the brakes to release them. Don't forget that the longitudinal brake is also controlled by the Emergency Off Box so that you can move the top way from the gantry and the couch down. You do not state which motion of the top is giving you the problem. If you loose power to the machine the brakes lock so without an electrical current through them they are in the locked condition. If you can move the top without touching the pendant or the side panels then you have a defective brake, if not then the brake is being released by an electrical signal. Only a few boards in the Auxiliary Chassis in the stand control these. Could be a defective board or a component on the board. Pete Vitali  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HU200GBYUV46I@hubbard.azu.nl>; Fri, 5 Mar 2004 01:33:06 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004030501330304762 ; Fri, 05 Mar 2004 01:33:03 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id BAA06966; Fri, 05 Mar 2004 01:34:49 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma006938; Fri, 05 Mar 2004 01:34:22 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id QAA25136 for linac-eng-list; Thu, 04 Mar 2004 16:29:24 -0600 (CST) Received: from adl0133.systems.sa.gov.au (adl0133.systems.sa.gov.au [143.216.236.20]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id QAA25129 for ; Thu, 04 Mar 2004 16:29:22 -0600 (CST) Received: from adl0133.systems.sa.gov.au (localhost [127.0.0.1]) by adl0133.systems.sa.gov.au OUTGOING (8.12.10/8.12.7) with ESMTP id i24MSkb2021005 for ; Fri, 05 Mar 2004 08:58:46 +1030 (CST) Received: from rahsun153.rah.sa.gov.au (mailhub.rah.sa.gov.au [10.19.241.188]) by adl0133.systems.sa.gov.au INCOMING (8.12.10/8.12.7) with ESMTP id i24MShpp020946 for ; Fri, 05 Mar 2004 08:58:44 +1030 (CST) Received: from mail.rah.sa.gov.au (MERCURY-2 [10.19.241.91]) by rahsun153.rah.sa.gov.au (8.12.9/8.12.8) with ESMTP id i24MScTr001600 for ; Fri, 05 Mar 2004 08:58:40 +1030 (CST) Received: from Spooler by mail.rah.sa.gov.au (Mercury/32 v4.01a) ID MO000170; Fri, 05 Mar 2004 08:58:40 +1030 Received: from spooler by mail.rah.sa.gov.au (Mercury/32 v4.01a); Fri, 05 Mar 2004 08:58:20 +1030 Date: Fri, 05 Mar 2004 08:57:23 +1030 From: David Horsman Subject: Carrousel bearing Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <200403042228.i24MScTr001600@rahsun153.rah.sa.gov.au> Organization: Royal Adelaide Hospital MIME-version: 1.0 X-Mailer: Pegasus Mail for Win32 (v3.12a) Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 05 Mar 2004 08:57:23 +1030 From: David Horsman Subject: Carrousel bearing Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Organization: Royal Adelaide Hospital X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hello all, Would someone please advise on if and how they lubricate the carrousel bearing please? It certainly doesn't look too easy to get to. Also, what lubricant is recommended and how often should it be done? On the subject of lubrication, how often should the collimator bearing be lubricated and with what? Many thanks in advance, David Horsman Senior Technical Officer Medical Physics Royal Adelaide Hospital North Terrace, Adelaide, South Australia Australia Ph +61 8 8222 4188 Fx +61 8 8222 5937 dhorsman@mail.rah.sa.gov.au  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HU200H3LVOY3Z@hubbard.azu.nl>; Fri, 5 Mar 2004 01:51:01 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004030501505723878 ; Fri, 05 Mar 2004 01:50:57 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id BAA08483; Fri, 05 Mar 2004 01:52:43 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma008455; Fri, 05 Mar 2004 01:52:38 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id RAA25794 for linac-eng-list; Thu, 04 Mar 2004 17:04:16 -0600 (CST) Received: from adl0133.systems.sa.gov.au (adl0133.systems.sa.gov.au [143.216.236.20]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id RAA25790 for ; Thu, 04 Mar 2004 17:04:14 -0600 (CST) Received: from adl0133.systems.sa.gov.au (localhost [127.0.0.1]) by adl0133.systems.sa.gov.au OUTGOING (8.12.10/8.12.7) with ESMTP id i24N3gb2029150 for ; Fri, 05 Mar 2004 09:33:42 +1030 (CST) Received: from rahsun153.rah.sa.gov.au (mailhub.rah.sa.gov.au [10.19.241.188]) by adl0133.systems.sa.gov.au INCOMING (8.12.10/8.12.7) with ESMTP id i24N3Zpp029019 for ; Fri, 05 Mar 2004 09:33:35 +1030 (CST) Received: from mail.rah.sa.gov.au (MERCURY-2 [10.19.241.91]) by rahsun153.rah.sa.gov.au (8.12.9/8.12.8) with ESMTP id i24N39U1009527 for ; Fri, 05 Mar 2004 09:33:28 +1030 (CST) Received: from Spooler by mail.rah.sa.gov.au (Mercury/32 v4.01a) ID MO000289; Fri, 05 Mar 2004 09:33:28 +1030 Received: from spooler by mail.rah.sa.gov.au (Mercury/32 v4.01a); Fri, 05 Mar 2004 09:32:45 +1030 Date: Fri, 05 Mar 2004 09:31:32 +1030 From: David Horsman Subject: 21 EX Carrousel bearing Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <200403042303.i24N39U1009527@rahsun153.rah.sa.gov.au> Organization: Royal Adelaide Hospital MIME-version: 1.0 X-Mailer: Pegasus Mail for Win32 (v3.12a) Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 05 Mar 2004 09:31:32 +1030 From: David Horsman Subject: 21 EX Carrousel bearing Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Organization: Royal Adelaide Hospital X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hello all, Would someone please advise on if and how they lubricate the carrousel bearing please? It certainly doesn't look too easy to get to. Also, what lubricant is recommended and how often should it be done? On the subject of lubrication, how often should the collimator bearing be lubricated and with what? Many thanks in advance, David Horsman Senior Technical Officer Medical Physics Royal Adelaide Hospital North Terrace, Adelaide, South Australia Australia Ph +61 8 8222 4188 Fx +61 8 8222 5937 dhorsman@mail.rah.sa.gov.au  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HU200HFWW693Z@hubbard.azu.nl>; Fri, 5 Mar 2004 02:01:22 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004030502012002647 ; Fri, 05 Mar 2004 02:01:20 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id CAA09369; Fri, 05 Mar 2004 02:03:06 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma009354; Fri, 05 Mar 2004 02:02:48 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id RAA26325 for linac-eng-list; Thu, 04 Mar 2004 17:13:46 -0600 (CST) Received: from phsornt422.or.providence.org (phsor-nat2.providence.org [170.220.2.14]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id RAA26321 for ; Thu, 04 Mar 2004 17:13:44 -0600 (CST) Received: from PickupDirectory by phsornt422.or.providence.org with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2653.13) id 17GYH1T0; Thu, 04 Mar 2004 15:13:16 -0800 Received: from phsorcon06.or.providence.org ([170.220.78.187]) by phsornt422.or.providence.org with Microsoft SMTPSVC(5.0.2195.5329); Thu, 04 Mar 2004 15:13:15 -0800 Received: from phsormsg01.or.providence.org ([170.220.73.29]) by phsorcon06.or.providence.org with Microsoft SMTPSVC(5.0.2195.6713); Thu, 04 Mar 2004 15:13:13 -0800 Date: Thu, 04 Mar 2004 15:13:12 -0800 From: John.Kaufman@providence.org Subject: CTRL interlocks Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <361A0F459B160A4D86EB7388D848F30E0E543C@phsormsg01.or.providence.org> MIME-version: 1.0 Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 8bit Importance: normal Precedence: bulk X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4927.1200 Content-Class: urn:content-classes:message Thread-Topic: CTRL interlocks thread-index: AcQCPkQIaTVFHStiS/2oeZxE43werg== X-OriginalArrivalTime: 04 Mar 2004 23:13:13.0312 (UTC) FILETIME=[44776600:01C4023E] X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id RAA26322 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 04 Mar 2004 15:13:12 -0800 From: John.Kaufman@providence.org Subject: CTRL interlocks Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Importance: normal X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4927.1200 Content-Class: urn:content-classes:message Thread-Topic: CTRL interlocks thread-index: AcQCPkQIaTVFHStiS/2oeZxE43werg== X-OriginalArrivalTime: 04 Mar 2004 23:13:13.0312 (UTC) FILETIME=[44776600:01C4023E] X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id RAA26322 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f I have an unusual intermittent problem. We have a vintage 2100 (SN 359) that has been producing CTRL interlocks at very unusual times. Usually this occurs about 3 times in an average week, one of them may be at 2:30 in the morning after the machine has been in Standby for 10 hours. Sometimes it is while the therapists are at lunch. I have changed the power supply to the Dell GX110 computer in the Varian Console and installed a UPS on that particular AC input. I have also had the main power to the Clinac studied and compared that to the event log with absolutely no correlation and no solution. Any ideas. Thanks in advance for all of your contributions. John B Kaufman Senior Biomedical Technician Providence Portland Medical Center 503-215-5415 503-215-6397 DISCLAIMER: This message is intended for the sole use of the individual to whom it is addressed, and may contain information that is privileged, confidential and exempt from disclosure under applicable law. If you are not the addressee you are hereby notified that you may not use, copy, disclose, or distribute to anyone the message or any information contained in the message. If you have received this message in error, please immediately advise the sender by reply email and delete this message.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HU3000A62DTOV@hubbard.azu.nl>; Fri, 5 Mar 2004 04:15:31 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004030504152803969 ; Fri, 05 Mar 2004 04:15:28 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id EAA20130; Fri, 05 Mar 2004 04:17:14 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma020107; Fri, 05 Mar 2004 04:17:05 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id TAA29538 for linac-eng-list; Thu, 04 Mar 2004 19:36:50 -0600 (CST) Received: from dalwhinnie.chhlth.govt.nz ([203.163.70.2]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id TAA29534 for ; Thu, 04 Mar 2004 19:36:44 -0600 (CST) Received: from mailsweeper2.chhlth.govt.nz (mailsweeper2.chhlth.govt.nz [159.117.18.162]) by dalwhinnie.chhlth.govt.nz (8.12.8/8.12.5) with ESMTP id i251d0fU017542 for ; Fri, 05 Mar 2004 14:39:02 +1300 Received: from SMTPGATE.CHHLTH.GOVT.NZ (unverified) by mailsweeper2.chhlth.govt.nz (Content Technologies SMTPRS 4.3.1) with ESMTP id for ; Fri, 05 Mar 2004 14:34:36 +1300 Received: from CHCH2-MTA by SMTPGATE.CHHLTH.GOVT.NZ with Novell_GroupWise; Fri, 05 Mar 2004 14:33:37 +1300 Date: Fri, 05 Mar 2004 09:53:43 +1300 From: Dave Pinchin Subject: Re: Linac 2100 C/D ETR Couch Sender: owner-linac-eng@plato.aristotle.net To: dale.dornacker@aurora.org, linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.0.4 Content-type: text/plain; charset=us-ascii Content-disposition: inline Content-transfer-encoding: 8bit Precedence: bulk X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id TAA29535 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 05 Mar 2004 09:53:43 +1300 From: Dave Pinchin Subject: Re: Linac 2100 C/D ETR Couch Sender: owner-linac-eng@plato.aristotle.net To: dale.dornacker@aurora.org, linac-eng@plato.aristotle.net Content-disposition: inline X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id TAA29535 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Old style couch side panels I'll bet.... The issue is the power turn off to the couch side panel. If it is not clean the uP crashes. Here is the typical sequence of events. 1/ Setup is complete. therapists clear the room. 2/ last interlock clears- power is removed from the couch side panels. ************ This is where it goes wrong ********** see later example 3/ Beam is turned on. How it goes wrong... 1/ therapists clear room 2/ Last interlock to clear suffers CONTACT BOUNCE. ****power is removed from the side panels and reapplied *******the uP does not perform it's power up initialisation ***********randomly, it sits back with a glass of beer and waits for some personal attention. The trick here is to work out where the contact bounce is coming from. Typically it's going to be the door or key which is the last to clear. Most of the others that may be later are electronic and (probably) won't bounce. If you have continual troubles I have a PCB which does a clean start on the uP. (Much better to fix the cause rather than the symptom) :D >>> 5/03/04 08:36:35 >>> Linac 2100 C/D ETR Couch. Does anyone recall the fix for the table top locks unlocking on there own. Thanks, Dale ********************************************************************** ** This email and attachments have been scanned for content and viruses and is believed to be clean ** This email or attachments may contain confidential or legally privileged information intended for the sole use of the addressee(s). Any use, redistribution, disclosure, or reproduction of this message, except as intended, is prohibited. If you received this email in error, please notify the sender and remove all copies of the message, including any attachments. Any views or opinions expressed in this email (unless otherwise stated) may not represent those of Canterbury District Health Board **********************************************************************  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HU3000MO2W2OV@hubbard.azu.nl>; Fri, 5 Mar 2004 04:26:29 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004030504262526260 ; Fri, 05 Mar 2004 04:26:25 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id EAA21058; Fri, 05 Mar 2004 04:28:11 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma021033; Fri, 05 Mar 2004 04:27:39 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id TAA29571 for linac-eng-list; Thu, 04 Mar 2004 19:44:08 -0600 (CST) Received: from dalwhinnie.chhlth.govt.nz ([203.163.70.2]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id TAA29567 for ; Thu, 04 Mar 2004 19:44:05 -0600 (CST) Received: from mailsweeper2.chhlth.govt.nz (mailsweeper2.chhlth.govt.nz [159.117.18.162]) by dalwhinnie.chhlth.govt.nz (8.12.8/8.12.5) with ESMTP id i251kFfU021025 for ; Fri, 05 Mar 2004 14:46:15 +1300 Received: from SMTPGATE.CHHLTH.GOVT.NZ (unverified) by mailsweeper2.chhlth.govt.nz (Content Technologies SMTPRS 4.3.1) with ESMTP id for ; Fri, 05 Mar 2004 14:42:15 +1300 Received: from CHCH2-MTA by SMTPGATE.CHHLTH.GOVT.NZ with Novell_GroupWise; Fri, 05 Mar 2004 14:35:22 +1300 Date: Fri, 05 Mar 2004 13:23:44 +1300 From: Dave Pinchin Subject: Re: CTRL interlocks Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net, John.Kaufman@providence.org Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.0.4 Content-type: text/plain; charset=us-ascii Content-disposition: inline Content-transfer-encoding: 8bit Precedence: bulk X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id TAA29568 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 05 Mar 2004 13:23:44 +1300 From: Dave Pinchin Subject: Re: CTRL interlocks Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net, John.Kaufman@providence.org Content-disposition: inline X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id TAA29568 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f G'day John, There are 150000 control interlocks. More details of your particular interlock event can be found if you examine the diagnostic dump files. The details of the contents of the file varies with the machine software version. Modern models have a facility to decode the logs into readable form. Goto the major mode screen and choose communications - translator (I think). Golly, that takes me back - Deciphering the hex dump......... Anyway this should put you on the right track to the actual fault causing the interlock. Good luck :D >>> 5/03/04 12:13:12 >>> I have an unusual intermittent problem. We have a vintage 2100 (SN 359) that has been producing CTRL interlocks at very unusual times. Usually this occurs about 3 times in an average week, one of them may be at 2:30 in the morning after the machine has been in Standby for 10 hours. Sometimes it is while the therapists are at lunch. I have changed the power supply to the Dell GX110 computer in the Varian Console and installed a UPS on that particular AC input. I have also had the main power to the Clinac studied and compared that to the event log with absolutely no correlation and no solution. Any ideas. Thanks in advance for all of your contributions. John B Kaufman Senior Biomedical Technician Providence Portland Medical Center 503-215-5415 503-215-6397 DISCLAIMER: This message is intended for the sole use of the individual to whom it is addressed, and may contain information that is privileged, confidential and exempt from disclosure under applicable law. If you are not the addressee you are hereby notified that you may not use, copy, disclose, or distribute to anyone the message or any information contained in the message. If you have received this message in error, please immediately advise the sender by reply email and delete this message. ********************************************************************** ** This email and attachments have been scanned for content and viruses and is believed to be clean ** This email or attachments may contain confidential or legally privileged information intended for the sole use of the addressee(s). Any use, redistribution, disclosure, or reproduction of this message, except as intended, is prohibited. If you received this email in error, please notify the sender and remove all copies of the message, including any attachments. Any views or opinions expressed in this email (unless otherwise stated) may not represent those of Canterbury District Health Board **********************************************************************  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HU30036PR5OBR@hubbard.azu.nl>; Fri, 5 Mar 2004 13:10:38 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004030513103110026 ; Fri, 05 Mar 2004 13:10:31 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id NAA12223; Fri, 05 Mar 2004 13:12:17 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xmaa12152; Fri, 05 Mar 2004 13:11:41 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id EAA06289 for linac-eng-list; Fri, 05 Mar 2004 04:35:12 -0600 (CST) Received: from mail.cbdha.nshealth.ca (mail.cbdha.nshealth.ca [142.176.129.245]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id EAA06285 for ; Fri, 05 Mar 2004 04:35:08 -0600 (CST) Received: from ELECTECH ([128.222.7.122]) by mail.cbdha.nshealth.ca (Merak 7.2.3) with SMTP id LOA74478; Fri, 05 Mar 2004 06:35:05 -0400 Date: Fri, 05 Mar 2004 06:36:17 -0400 From: Greg MacKinnon Subject: RE: CTRL interlocks In-reply-to: <361A0F459B160A4D86EB7388D848F30E0E543C@phsormsg01.or.providence.org> Sender: owner-linac-eng@plato.aristotle.net To: John.Kaufman@providence.org Cc: "LinacEng (E-mail)" Message-id: <000801c4029d$b16231a0$7a07de80@ELECTECH> MIME-version: 1.0 X-Mailer: Microsoft Outlook CWS, Build 9.0.2416 (9.0.2910.0) Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 7bit Importance: Normal Precedence: bulk X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 (Normal) *** EOOH *** Date: Fri, 05 Mar 2004 06:36:17 -0400 From: Greg MacKinnon Subject: RE: CTRL interlocks In-reply-to: <361A0F459B160A4D86EB7388D848F30E0E543C@phsormsg01.or.providence.org> Sender: owner-linac-eng@plato.aristotle.net To: John.Kaufman@providence.org Cc: "LinacEng (E-mail)" Importance: Normal X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 (Normal) Hi John Couple things: 1) check the EVENT log (under Major mode, Communication) to see if any thing was log, it may give you some information of what actual caused the CTRL. Post this information to the group. 2) Verify the +5V test point on the Communication CPU located at the back of the console rack is +5.03 volts. If not adjust the main +5V power supply. Other things to try are replacing the Communication and/or Control CPUs. Good Luck __________________________________________ Greg MacKinnon, C.E.T. Linear Accelerator Service Technologist Cape Breton Cancer Centre 1482 George Street Sydney, Nova Scotia, Canada B1P 1P3 tel: (902) 567-8076 fax: (902) 567-8075 email: mackinnongreg@cbdha.nshealth.ca -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of John.Kaufman@providence.org Sent: Thursday, March 04, 2004 7:13 PM To: linac-eng@plato.aristotle.net Subject: CTRL interlocks I have an unusual intermittent problem. We have a vintage 2100 (SN 359) that has been producing CTRL interlocks at very unusual times. Usually this occurs about 3 times in an average week, one of them may be at 2:30 in the morning after the machine has been in Standby for 10 hours. Sometimes it is while the therapists are at lunch. I have changed the power supply to the Dell GX110 computer in the Varian Console and installed a UPS on that particular AC input. I have also had the main power to the Clinac studied and compared that to the event log with absolutely no correlation and no solution. Any ideas. Thanks in advance for all of your contributions. John B Kaufman Senior Biomedical Technician Providence Portland Medical Center 503-215-5415 503-215-6397 DISCLAIMER: This message is intended for the sole use of the individual to whom it is addressed, and may contain information that is privileged, confidential and exempt from disclosure under applicable law. If you are not the addressee you are hereby notified that you may not use, copy, disclose, or distribute to anyone the message or any information contained in the message. If you have received this message in error, please immediately advise the sender by reply email and delete this message.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HU400LA94SZCE@hubbard.azu.nl>; Fri, 5 Mar 2004 18:05:25 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004030518052201733 ; Fri, 05 Mar 2004 18:05:22 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA08338; Fri, 05 Mar 2004 18:07:08 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma008289; Fri, 05 Mar 2004 18:06:53 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id JAA10029 for linac-eng-list; Fri, 05 Mar 2004 09:10:33 -0600 (CST) Received: from phsornt422.or.providence.org (phsor-nat2.providence.org [170.220.2.14]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id JAA10025 for ; Fri, 05 Mar 2004 09:10:31 -0600 (CST) Received: from PickupDirectory by phsornt422.or.providence.org with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2653.13) id 17GYHYL8; Fri, 05 Mar 2004 07:10:02 -0800 Received: from phsorcon06.or.providence.org ([170.220.78.187]) by phsornt422.or.providence.org with Microsoft SMTPSVC(5.0.2195.5329); Fri, 05 Mar 2004 07:10:01 -0800 Received: from phsormsg01.or.providence.org ([170.220.73.29]) by phsorcon06.or.providence.org with Microsoft SMTPSVC(5.0.2195.6713); Fri, 05 Mar 2004 07:09:59 -0800 Date: Fri, 05 Mar 2004 07:09:59 -0800 From: John.Kaufman@providence.org Subject: CTRL IL more info Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <361A0F459B160A4D86EB7388D848F30EC3D710@phsormsg01.or.providence.org> MIME-version: 1.0 Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 8bit Importance: normal Precedence: bulk X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4927.1200 Content-Class: urn:content-classes:message Thread-Topic: CTRL IL more info thread-index: AcQCw+zyJQsg0Vw2QA+pakylSFqljw== X-OriginalArrivalTime: 05 Mar 2004 15:09:59.0625 (UTC) FILETIME=[ED4B9B90:01C402C3] X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id JAA10026 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 05 Mar 2004 07:09:59 -0800 From: John.Kaufman@providence.org Subject: CTRL IL more info Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Importance: normal X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4927.1200 Content-Class: urn:content-classes:message Thread-Topic: CTRL IL more info thread-index: AcQCw+zyJQsg0Vw2QA+pakylSFqljw== X-OriginalArrivalTime: 05 Mar 2004 15:09:59.0625 (UTC) FILETIME=[ED4B9B90:01C402C3] X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id JAA10026 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Sorry about the omission in the last post about my nagging CTRL interlocks. The communications log always indicates "Spurious Interrupt", which to me is no help and had determined the direction in which I was proceeding. If that helps in reaching any possible solutions I would appreciate any and all responses. Thanks in advance John B Kaufman Senior Biomedical Technician Providence Portland Medical Center 503-215-5415 503-215-6397 DISCLAIMER: This message is intended for the sole use of the individual to whom it is addressed, and may contain information that is privileged, confidential and exempt from disclosure under applicable law. If you are not the addressee you are hereby notified that you may not use, copy, disclose, or distribute to anyone the message or any information contained in the message. If you have received this message in error, please immediately advise the sender by reply email and delete this message.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HU40045AD8LLE@hubbard.azu.nl>; Fri, 5 Mar 2004 21:07:34 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004030521073229353 ; Fri, 05 Mar 2004 21:07:32 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id VAA25817; Fri, 05 Mar 2004 21:09:18 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma025796; Fri, 05 Mar 2004 21:08:52 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id MAA12564 for linac-eng-list; Fri, 05 Mar 2004 12:15:05 -0600 (CST) Received: from email.med.yale.edu (email.med.yale.edu [130.132.232.16]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id MAA12557 for ; Fri, 05 Mar 2004 12:15:04 -0600 (CST) Received: from yale.edu (vitalip.med.yale.edu [130.132.213.170]) by email.med.yale.edu (PMDF V6.1-1 #30873) with ESMTP id <0HU40VO5G80ZN3@email.med.yale.edu> for linac-eng@plato.aristotle.net; Fri, 05 Mar 2004 13:15:02 -0500 (EST) Date: Fri, 05 Mar 2004 13:16:10 -0500 From: Peter Vitali Subject: Re: CTRL interlocks Sender: owner-linac-eng@plato.aristotle.net To: John.Kaufman@providence.org Cc: linac-eng@plato.aristotle.net Message-id: <4048C3A2.9DA7179A@yale.edu> MIME-version: 1.0 X-Mailer: Mozilla 4.76 (Macintosh; U; PPC) Content-type: text/plain; charset=us-ascii; x-mac-type=54455854; x-mac-creator=4D4F5353 Content-transfer-encoding: 7bit Precedence: bulk X-Accept-Language: en References: <361A0F459B160A4D86EB7388D848F30E0E543C@phsormsg01.or.providence.org> X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 05 Mar 2004 13:16:10 -0500 From: Peter Vitali Subject: Re: CTRL interlocks Sender: owner-linac-eng@plato.aristotle.net To: John.Kaufman@providence.org Cc: linac-eng@plato.aristotle.net X-Accept-Language: en X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f John: We had this problem after Varian Upgraded our electronic console. Our problem was that the COMMs PCB had to be upgraded to a version greater than 14 to eliminate this problem. First I would try swapping out that board. You may not have a spare. We did not have a spare or if we did it was used many years ago. We did have a problem with the new board in that it was slightly different that the old board. I have a note saying that the new board would not work because it does not have the jumpers on it. The old board could be changed from a COMMs PCT to a CTRL PCB by changing a jumper. The new board does not have a jumper so it has to be specifically ordered as a COMMs board. I found another record about 20 days later that said we replaced the COMMs board with one at a level of version 21. No other info on the problem. Part Number we used: 88292005 I believe the CTRL bd end in a 6 or a 4. Pete Vitali  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HU400FHASIB8M@hubbard.azu.nl>; Sat, 6 Mar 2004 02:37:24 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004030602372312808 ; Sat, 06 Mar 2004 02:37:23 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id CAA22597; Sat, 06 Mar 2004 02:39:09 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma022592; Sat, 06 Mar 2004 02:38:48 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id RAA20104 for linac-eng-list; Fri, 05 Mar 2004 17:52:51 -0600 (CST) Received: from imo-m21.mx.aol.com (imo-m21.mx.aol.com [64.12.137.2]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id RAA20099 for ; Fri, 05 Mar 2004 17:52:50 -0600 (CST) Received: from PPATNAUDE2@aol.com by imo-m21.mx.aol.com (mail_out_v37.4.) id y.107.2ce85c15 (4328) for ; Fri, 05 Mar 2004 18:52:35 -0500 (EST) Date: Fri, 05 Mar 2004 18:52:35 -0500 (EST) From: PPATNAUDE2@aol.com Subject: morning warm-up Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <107.2ce85c15.2d7a6cc3@aol.com> MIME-version: 1.0 X-Mailer: 7.0 for Windows sub 10709 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_jdYdkoSs0zXcSI6pbbBhbQ)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 05 Mar 2004 18:52:35 -0500 (EST) From: PPATNAUDE2@aol.com Subject: morning warm-up Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f --Boundary_(ID_jdYdkoSs0zXcSI6pbbBhbQ) Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7bit I like to get more info on morning warm-ups who is should be doing them. Any thing group has I could use thanks. --Boundary_(ID_jdYdkoSs0zXcSI6pbbBhbQ) Content-type: text/html; charset=US-ASCII Content-transfer-encoding: quoted-printable I like to get more info=20= on morning warm-ups who is should be doing them. Any thing group has I could= use thanks. --Boundary_(ID_jdYdkoSs0zXcSI6pbbBhbQ)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HU6003J83IIYU@hubbard.azu.nl>; Sat, 6 Mar 2004 19:32:44 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004030619324124715 ; Sat, 06 Mar 2004 19:32:41 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA00024; Sat, 06 Mar 2004 19:34:28 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma029995; Sat, 06 Mar 2004 19:34:05 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id KAA02114 for linac-eng-list; Sat, 06 Mar 2004 10:47:45 -0600 (CST) Received: from PHSEXCHICI.MGH.HARVARD.EDU (phsexchici.mgh.harvard.edu [132.183.126.51]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id KAA02110 for ; Sat, 06 Mar 2004 10:47:43 -0600 (CST) Received: by phsexchici.mgh.harvard.edu with Internet Mail Service (5.5.2657.72) id ; Sat, 06 Mar 2004 11:47:13 -0500 Date: Sat, 06 Mar 2004 11:47:12 -0500 From: "Maddox, Buford J" Subject: RE: morning warm-up Sender: owner-linac-eng@plato.aristotle.net To: "'PPATNAUDE2@aol.com'" , linac-eng@plato.aristotle.net Message-id: <36298D09ED1AD311B4DC0008C7F4D4E11146639A@phsexch6.partners.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_fKPcVJh//lJcnTLZFplWow)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Sat, 06 Mar 2004 11:47:12 -0500 From: "Maddox, Buford J" Subject: RE: morning warm-up Sender: owner-linac-eng@plato.aristotle.net To: "'PPATNAUDE2@aol.com'" , linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_fKPcVJh//lJcnTLZFplWow) Content-type: text/plain; charset=iso-8859-1 All morning warmups are done by therapists here, before physics or engineers arrive. They also prepare a lot of patient related stuff at the same time, so they are not just doing warmups alone. Warmup includes recording machine parameters on old machines, dose check with a device using automated recording, etc. The amount of work is kept to a minimum. it is more effective to have engineers doing prevention and repairs at night than to be here in the am, unless there is a machine with a known am problem. it is also unreasonable to expect someone to work late and come in early the next morning, and unsafe to come in early and work late, so 2 engineers, with overlap during the day, is the minumum for extended hours. Many problems also require 2 for safety or troubleshooting. Service contracts always are written with a requirement for a second person from the hospital to be present at night. I find that 80 % of am problems can be solved over the phone. We have coverage from 7am to at least 8pm, later if necessary. This has worked well for many years, with a rare 1 hr delay (and 1/2 hr of this is with an engineer on the phone) in the am being a reasonable price to pay for the much better performance of the machines due to more pm at night. Jerry -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of PPATNAUDE2@aol.com Sent: Friday, March 05, 2004 6:53 PM To: linac-eng@plato.aristotle.net Subject: morning warm-up I like to get more info on morning warm-ups who is should be doing them. Any thing group has I could use thanks. --Boundary_(ID_fKPcVJh//lJcnTLZFplWow) Content-type: text/html; charset=iso-8859-1
All morning warmups are done by therapists here, before physics or engineers arrive.  They also prepare a lot of patient related stuff at the same time, so they are not just doing warmups alone. Warmup includes recording machine parameters on old machines, dose check with a device using automated recording, etc.  The amount of work is kept to a minimum. 
   it is more effective to have engineers doing prevention and repairs at night than to be here in the am, unless there is a machine with a known am problem.  it is also unreasonable to expect someone to work late and come in early the next morning, and unsafe to come in early and work late, so 2 engineers, with overlap during the day, is the minumum for extended hours.  Many problems also require 2 for safety or troubleshooting.  Service contracts always are written with a requirement for a second person from the hospital to be present at night. I find that 80 % of am problems can be solved over the phone.  We have coverage from 7am to at least 8pm, later if necessary.  This has worked well for many years, with a rare 1 hr delay (and 1/2 hr of this is with an engineer on the phone) in the am being a reasonable price to pay for the much better performance of the machines due to more pm at night. 
 
Jerry
 
-----Original Message-----
From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of PPATNAUDE2@aol.com
Sent: Friday, March 05, 2004 6:53 PM
To: linac-eng@plato.aristotle.net
Subject: morning warm-up

I like to get more info on morning warm-ups who is should be doing them. Any thing group has I could use thanks.
--Boundary_(ID_fKPcVJh//lJcnTLZFplWow)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HU800FIDE2B8N@hubbard.azu.nl>; Mon, 8 Mar 2004 01:15:48 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004030801154621548 ; Mon, 08 Mar 2004 01:15:46 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id BAA05285; Mon, 08 Mar 2004 01:17:34 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma005283; Mon, 08 Mar 2004 01:17:32 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id QAA22845 for linac-eng-list; Sun, 07 Mar 2004 16:31:59 -0600 (CST) Received: from adl0133.systems.sa.gov.au (adl0133.systems.sa.gov.au [143.216.236.20]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id QAA22841 for ; Sun, 07 Mar 2004 16:31:57 -0600 (CST) Received: from adl0133.systems.sa.gov.au (localhost [127.0.0.1]) by adl0133.systems.sa.gov.au OUTGOING (8.12.10/8.12.7) with ESMTP id i27MVMxF010625 for ; Mon, 08 Mar 2004 09:01:22 +1030 (CST) Received: from rahsun153.rah.sa.gov.au (mailhub.rah.sa.gov.au [10.19.241.188]) by adl0133.systems.sa.gov.au INCOMING (8.12.10/8.12.7) with ESMTP id i27MVKXZ010588 for ; Mon, 08 Mar 2004 09:01:20 +1030 (CST) Received: from mail.rah.sa.gov.au (MERCURY-2 [10.19.241.91]) by rahsun153.rah.sa.gov.au (8.12.9/8.12.8) with ESMTP id i27MV9jP008716 for ; Mon, 08 Mar 2004 09:01:10 +1030 (CST) Received: from Spooler by mail.rah.sa.gov.au (Mercury/32 v4.01a) ID MO00019B; Mon, 08 Mar 2004 09:01:17 +1030 Received: from spooler by mail.rah.sa.gov.au (Mercury/32 v4.01a); Mon, 08 Mar 2004 09:00:33 +1030 Date: Mon, 08 Mar 2004 08:57:17 +1030 From: David Horsman Subject: RE: 21 EX Carrousel bearing In-reply-to: <9C688FB52A05D51194750002B325B5F703A27452@hrccex.hrcc.on.ca> Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <200403072231.i27MV9jP008716@rahsun153.rah.sa.gov.au> Organization: Royal Adelaide Hospital MIME-version: 1.0 X-Mailer: Pegasus Mail for Win32 (v3.12a) Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 08 Mar 2004 08:57:17 +1030 From: David Horsman Subject: RE: 21 EX Carrousel bearing In-reply-to: <9C688FB52A05D51194750002B325B5F703A27452@hrccex.hrcc.on.ca> Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Organization: Royal Adelaide Hospital X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Many thanks to all who replied. David Horsman Senior Technical Officer Medical Physics Royal Adelaide Hospital North Terrace, Adelaide, South Australia Australia Ph +61 8 8222 4188 Fx +61 8 8222 5937 dhorsman@mail.rah.sa.gov.au  1,, X-Coding-System: iso-latin-1-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HU8003NZON4D2@hubbard.azu.nl> for jkok@sims-ms-daemon; Mon, 8 Mar 2004 05:04:17 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004030805041522416 for ; Mon, 08 Mar 2004 05:04:15 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id FAA18385 for ; Mon, 08 Mar 2004 05:06:03 +0100 (MET) Received: from caviar.isi.uu.nl(131.211.144.138) by armstrong.azu.nl via smap (V1.3) id xma018369; Mon, 08 Mar 2004 05:05:38 +0100 Received: from chouffe.radth.ruu.nl (chouffe.radth.ruu.nl [131.211.145.4]) by caviar.isi.uu.nl (Postfix) with ESMTP id 79474114196 for ; Mon, 08 Mar 2004 05:02:23 +0100 (MET) Received: from (caviar.isi.uu.nl) [131.211.144.138] by chouffe.radth.ruu.nl with esmtp (Exim 3.35 #1 (Debian)) id 1B0CTs-00068c-00; Mon, 08 Mar 2004 05:35:08 +0100 Received: from hotmail.com (unknown [218.88.129.123]) by caviar.isi.uu.nl (Postfix) with ESMTP id 26E13114196 for ; Mon, 08 Mar 2004 05:02:21 +0100 (MET) Date: Mon, 08 Mar 2004 12:03:48 +0800 From: "xie@hotmail.com" Subject: Hello To: kok@radth.ruu.nl Reply-to: xie@hotmail.com Message-id: <20040308040221.26E13114196@caviar.isi.uu.nl> MIME-version: 1.0 X-Mailer: Microsoft Outlook Express 6.00.2800.1158 Content-type: text/plain; charset=GB2312 Content-transfer-encoding: 8BIT X-Priority: 3 *** EOOH *** Date: Mon, 08 Mar 2004 12:03:48 +0800 From: "xie@hotmail.com" Subject: Hello To: kok@radth.ruu.nl Reply-to: xie@hotmail.com X-Priority: 3 Email Marketing ! 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the silver star internet information company copyright¡¤2004-2005 all reserved ------------------------------------------------------------ remove please email: emailad1234@sina.com ------------------------------------------------------------  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HU90059AAHYL3@hubbard.azu.nl>; Mon, 8 Mar 2004 12:56:25 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004030812562206027 ; Mon, 08 Mar 2004 12:56:22 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id MAA10717; Mon, 08 Mar 2004 12:58:09 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma010530; Mon, 08 Mar 2004 12:57:19 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id DAA00943 for linac-eng-list; Mon, 08 Mar 2004 03:51:18 -0600 (CST) Received: from mail20.nhs.uk (mail20.nhs.uk [62.6.139.212]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id DAA00939 for ; Mon, 08 Mar 2004 03:51:16 -0600 (CST) Received: from [10.191.254.3] (helo=relayint1.nhs.uk) by mail20.nhs.uk with esmtp (MTC MTA) id 1B0HPJ-0003fD-Iv for linac-eng@plato.aristotle.net; Mon, 08 Mar 2004 09:50:45 +0000 Received: from relay.nhs.uk (194.62.42.142) by relayint1.nhs.uk (Syntegra-I1 7.0.008) id 4039DF370032B9AB for linac-eng@plato.aristotle.net; Mon, 08 Mar 2004 09:50:45 +0000 Received: from mercury.University-b.wmids.nhs.uk (193.240.116.176) by relay.nhs.uk (Syntegra-2 7.0.008) (authenticated as smtp_uhb_nhs_uk@es2002.nhs.uk) id 40486779000B435F; Mon, 08 Mar 2004 09:50:45 +0000 Received: by MERCURY with Internet Mail Service (5.5.2653.19) id ; Mon, 08 Mar 2004 09:50:44 +0000 Date: Mon, 08 Mar 2004 09:48:41 +0000 From: Graham Chalmers Subject: RE: morning warm-up Sender: owner-linac-eng@plato.aristotle.net To: "'PPATNAUDE2@aol.com'" , linac-eng@plato.aristotle.net Message-id: <71A7A8BA33E3D511AF5E00034797029B105353BF@HERMES> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_2jKkyKKK9tP+NiAtWPzGiA)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 08 Mar 2004 09:48:41 +0000 From: Graham Chalmers Subject: RE: morning warm-up Sender: owner-linac-eng@plato.aristotle.net To: "'PPATNAUDE2@aol.com'" , linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_2jKkyKKK9tP+NiAtWPzGiA) Content-type: text/plain; CHARSET=US-ASCII Here in Birmingham. Daily - the workshop technical staff run up the linacs. Radiographers (those who treat patients) then perform a series of daily QC checks and a dose constancy measurement before treatments start following protocols written by Radiotherapy Physics. W/ends - Radiographers run-up the machines they use for on-call. These are left at the powered off status (Elekta) so all is required is to make a few keyboard entries. Radiographers are not permitted to enter service mode. Should there be any problems then we have a workshop technician or QA physicist on call All the run-up instructions are written down so the staff performing the run-up are working to a protocol. In fact we now leave 4 of our 6 machines fully powered up overnight for stability so all the technician has to do is select a few beams to run as a warmup sequence without waiting for warmup timers etc. I think the bottom line is that you have to be happy that whoever is running up is competent to do so and will spot when the unit is not working fine. Obviously too, it is beneficial to have staff available to sort the simple morning problems before they eat into clinical time With best wishes Graham Chalmers Graham Chalmers Radiotherapy Physics University Hospital Birmingham NHS Trust Birmingham B15 2TH 0121-627-2266 DISCLAIMER: This e-mail contains proprietary information some or all of which may be confidential or legally privileged. It is for the exclusive use of the intended recipient(s) only. If an addressing or transmission error has misdirected this e-mail and you are not the intended recipient(s), please notify the author by replying to this e-mail. If you are not the intended recipient you must not use, disclose, distribute, copy, print, or rely on this e-mail, as this may be unlawful. -----Original Message----- From: PPATNAUDE2@aol.com [mailto:PPATNAUDE2@aol.com] Sent: 05 March 2004 23:53 To: linac-eng@plato.aristotle.net Subject: morning warm-up I like to get more info on morning warm-ups who is should be doing them. Any thing group has I could use thanks. DISCLAIMER: This e-mail contains proprietary information some or all of which may be confidential or legally privileged. It is for the exclusive use of the intended recipient(s) only. If an addressing or transmission error has misdirected this e-mail and you are not the intended recipient(s), please notify the author by replying to this e-mail. If you are not the intended recipient you must not use, disclose, distribute, copy, print, or rely on this e-mail, as this may be unlawful. --Boundary_(ID_2jKkyKKK9tP+NiAtWPzGiA) Content-type: text/html

Here in Birmingham.

 

Daily - the workshop technical staff run up the linacs. Radiographers (those who treat patients) then perform a series of daily QC checks and a dose constancy measurement before treatments start following protocols written by Radiotherapy Physics.

 

W/ends - Radiographers run-up the machines they use for on-call. These are left at the powered off status (Elekta) so all is required is to make a few keyboard entries. Radiographers are not permitted to enter service mode. Should there be any problems then we have a workshop technician or QA physicist on call

 

All the run-up instructions are written down so the staff performing the run-up are working to a protocol.

 

In fact we now leave 4 of our 6 machines fully powered up overnight for stability so all the technician has to do is select a few beams to run as a warmup sequence without waiting for warmup timers etc.

 

I think the bottom line is that you have to be happy that whoever is running up is competent to do so and will spot when the unit is not working fine. Obviously too, it is beneficial to have staff available to sort the simple morning problems before they eat into clinical time

 

With best wishes

 

Graham Chalmers

 

 

Graham Chalmers 

Radiotherapy Physics

University Hospital Birmingham NHS Trust

Birmingham B15 2TH

0121-627-2266

 

 

 

 

DISCLAIMER: This e-mail contains proprietary information some or all of which may be confidential or legally privileged. It is for the exclusive use of the intended recipient(s) only. If an addressing or transmission error has misdirected this e-mail and you are not the intended recipient(s), please notify the author by replying to this e-mail. If you are not the intended recipient you must not use, disclose, distribute, copy, print, or rely on this e-mail, as this may be unlawful.

-----Original Message-----
From: PPATNAUDE2@aol.com [mailto:PPATNAUDE2@aol.com]
Sent: 05 March 2004 23:53
To: linac-eng@plato.aristotle.net
Subject: morning warm-up

 

I like to get more info on morning warm-ups who is should be doing them. Any thing group has I could use thanks.

DISCLAIMER: This e-mail contains proprietary information some or all of which may be confidential or legally privileged. It is for the exclusive use of the intended recipient(s) only. If an addressing or transmission error has misdirected this e-mail and you are not the intended recipient(s), please notify the author by replying to this e-mail. If you are not the intended recipient you must not use, disclose, distribute, copy, print, or rely on this e-mail, as this may be unlawful.

--Boundary_(ID_2jKkyKKK9tP+NiAtWPzGiA)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HU900D0MEDKN5@hubbard.azu.nl>; Mon, 8 Mar 2004 14:20:11 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004030814200404622 ; Mon, 08 Mar 2004 14:20:04 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id OAA00960; Mon, 08 Mar 2004 14:21:51 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xmaa00761; Mon, 08 Mar 2004 14:21:12 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id FAA02334 for linac-eng-list; Mon, 08 Mar 2004 05:16:01 -0600 (CST) Received: from intfw2.phci.org (user.phci.org [207.67.109.70]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id FAA02327 for ; Mon, 08 Mar 2004 05:15:59 -0600 (CST) Received: from intfw2.phci.org (root@localhost) by intfw2.phci.org with ESMTP id i28BFTnV008520 for ; Mon, 08 Mar 2004 05:15:29 -0600 (CST) Received: from zixvpm00.phci.org (zixvpm01.phci.org [172.20.3.21]) by intfw2.phci.org with ESMTP id i28BFS7N008517 for ; Mon, 08 Mar 2004 05:15:28 -0600 (CST) Received: from zixvpm01.phci.org (ZixVPM [127.0.0.1]) by Outbound.phci.org (Proprietary) with ESMTP id C9E2A1A408D for ; Mon, 08 Mar 2004 05:15:28 -0600 (CST) Received: from smtpscan.phci.org (smtpscan.phci.org [172.20.3.10]) by zixvpm00.phci.org (Proprietary) with SMTP id F40741A0052 for ; Mon, 08 Mar 2004 05:15:26 -0600 (CST) Received: from rwdmail.phci.org ([IP=10.16.2.5]) by eSafe SMTP Relay 1078503700; Mon Mar 8 05:24:38 2004 Received: by rwdmail.phci.org with Internet Mail Service (5.5.2657.72) id ; Mon, 08 Mar 2004 05:15:26 -0600 Date: Mon, 08 Mar 2004 05:15:23 -0600 From: "Williams, Rod" Subject: RE: 21 EX Carrousel bearing Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <7A3389A8D723D511B2260008C7B2BF390D630D@wmhmail.phci.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_NQjU1huHjrMicoA1i+UmHw)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 08 Mar 2004 05:15:23 -0600 From: "Williams, Rod" Subject: RE: 21 EX Carrousel bearing Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_NQjU1huHjrMicoA1i+UmHw) Content-type: text/plain; charset=iso-8859-1 Hi to the Group, I received this in my inbox today and thought to myself that it would have been nice to see the responses to this question. I have my way of lubricating the bearing but it would have been nice to see what others were doing. I think that sometimes some of us are to shy or might fear the responses of others and therefore post directly to the person asking the question instead of adding the Linacs group to the response. I have seen this in the past and thought today I would post about it to see what everyone else thinks. I for one would like to see all the responses to all the questions and maybe if those who like to jump on someone would back off, I for one have become a kinder gentler human. (: Maybe we could get all the postings back on the main server. -----Original Message----- From: David Horsman [mailto:Dhorsman@mail.rah.sa.gov.au] Sent: Sunday, March 07, 2004 4:27 PM To: linac-eng@plato.aristotle.net Subject: RE: 21 EX Carrousel bearing Many thanks to all who replied. David Horsman Senior Technical Officer This information is confidential and intended solely for the use of the individual or entity to whom it is addressed. If you have received this email in error please notify the sender or our Customer Support Center at (262) 928-2777. We have scanned this email and its attachments for malicious content. However, the recipient should check this email and any attachments for the presence of viruses. ProHealth Care accepts no liability for any damage caused by any virus transmitted by this email. --Boundary_(ID_NQjU1huHjrMicoA1i+UmHw) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: quoted-printable RE: 21 EX Carrousel bearing

Hi to the Group,

I received this in my inbox today and thought to myself= that it would have been nice to see the responses to this question. I ha= ve my way of lubricating the bearing but it would have been nice to see w= hat others were doing. I think that sometimes some of us are to shy or mi= ght fear the responses of others and therefore post directly to the perso= n asking the question instead of adding the Linacs group to the response.= I have seen this in the past and thought today I would post about it to = see what everyone else thinks. I for one would like to see all the respon= ses to all the questions and maybe if those who like to jump on someone w= ould back off, I for one have become a kinder gentler human. (: Maybe we = could get all the postings back on the main server.

-----Original Message-----
From: David Horsman [mailto:Dhorsman@mail.rah.sa.gov.au]
Sent: Sunday, March 07, 2004 4:27 PM
To: linac-eng@plato.aristotle.net
Subject: RE: 21 EX Carrousel bearing


Many thanks to all who replied.
 
David Horsman
Senior Technical Officer


This information is confidential and intended solely fo= r the use of the individual or entity to whom it is addressed.
If you have received this email in error please notify= the sender or our Customer Support Center at (262) 928-2777.

We have scanned this email and its attachments for mali= cious content.
However, the recipient should check this email and any= attachments for the presence of viruses.
ProHealth Care accepts no liability for any damage cau= sed by any virus transmitted by this email.

--Boundary_(ID_NQjU1huHjrMicoA1i+UmHw)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HU900F9LFY0NV@hubbard.azu.nl>; Mon, 8 Mar 2004 14:54:08 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004030814535701442 ; Mon, 08 Mar 2004 14:53:57 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id OAA10114; Mon, 08 Mar 2004 14:55:44 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma009866; Mon, 08 Mar 2004 14:54:48 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id FAA02917 for linac-eng-list; Mon, 08 Mar 2004 05:52:52 -0600 (CST) Received: from intfw1.phci.org (user.phci.org [207.67.109.70]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id FAA02913 for ; Mon, 08 Mar 2004 05:52:51 -0600 (CST) Received: from intfw1.phci.org (root@localhost) by intfw1.phci.org with ESMTP id i28BqMPW012845 for ; Mon, 08 Mar 2004 05:52:22 -0600 (CST) Received: from zixvpm00.phci.org (zixvpm02.phci.org [172.20.3.22]) by intfw1.phci.org with ESMTP id i28BqMTo012842 for ; Mon, 08 Mar 2004 05:52:22 -0600 (CST) Received: from zixvpm02.phci.org (ZixVPM [127.0.0.1]) by Outbound.phci.org (Proprietary) with ESMTP id 6F5491C0072 for ; Mon, 08 Mar 2004 05:52:22 -0600 (CST) Received: from smtpscan.phci.org (smtpscan.phci.org [172.20.3.10]) by zixvpm00.phci.org (Proprietary) with SMTP id 1BA411A407D for ; Mon, 08 Mar 2004 05:52:21 -0600 (CST) Received: from rwdmail.phci.org ([IP=10.16.2.5]) by eSafe SMTP Relay 1078503700; Mon Mar 8 06:01:32 2004 Received: by rwdmail.phci.org with Internet Mail Service (5.5.2657.72) id ; Mon, 08 Mar 2004 05:52:20 -0600 Date: Mon, 08 Mar 2004 05:52:17 -0600 From: "Williams, Rod" Subject: RE: morning warm-up Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <7A3389A8D723D511B2260008C7B2BF390D630F@wmhmail.phci.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_HLqYkjlPNobijc2V4kQBog)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 08 Mar 2004 05:52:17 -0600 From: "Williams, Rod" Subject: RE: morning warm-up Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_HLqYkjlPNobijc2V4kQBog) Content-type: text/plain; charset=iso-8859-1 Hi Here at Waukesha we stopped warming up the Linac's. The techs come in initialize the Mlc, fil delay and do the output check and they are ready to go. Years ago with the 1800 I did a AM check because Physics requested it and never really thought about why. I am at the hospital early in case problems arise and I use my early starting time to do PM on the machines. This may not work for those who come in later. The good thing is that the Techs know how to get everything running by them self's making them more independent. So far so good. -----Original Message----- From: Graham Chalmers [mailto:Graham.Chalmers@uhb.nhs.uk] Sent: Monday, March 08, 2004 3:49 AM To: 'PPATNAUDE2@aol.com'; linac-eng@plato.aristotle.net Subject: RE: morning warm-up Here in Birmingham. Daily - the workshop technical staff run up the linacs. Radiographers (those who treat patients) then perform a series of daily QC checks and a dose constancy measurement before treatments start following protocols written by Radiotherapy Physics. W/ends - Radiographers run-up the machines they use for on-call. These are left at the powered off status (Elekta) so all is required is to make a few keyboard entries. Radiographers are not permitted to enter service mode. Should there be any problems then we have a workshop technician or QA physicist on call All the run-up instructions are written down so the staff performing the run-up are working to a protocol. In fact we now leave 4 of our 6 machines fully powered up overnight for stability so all the technician has to do is select a few beams to run as a warmup sequence without waiting for warmup timers etc. I think the bottom line is that you have to be happy that whoever is running up is competent to do so and will spot when the unit is not working fine. Obviously too, it is beneficial to have staff available to sort the simple morning problems before they eat into clinical time With best wishes Graham Chalmers Graham Chalmers Radiotherapy Physics University Hospital Birmingham NHS Trust Birmingham B15 2TH 0121-627-2266 DISCLAIMER: This e-mail contains proprietary information some or all of which may be confidential or legally privileged. It is for the exclusive use of the intended recipient(s) only. If an addressing or transmission error has misdirected this e-mail and you are not the intended recipient(s), please notify the author by replying to this e-mail. If you are not the intended recipient you must not use, disclose, distribute, copy, print, or rely on this e-mail, as this may be unlawful. -----Original Message----- From: PPATNAUDE2@aol.com [mailto:PPATNAUDE2@aol.com] Sent: 05 March 2004 23:53 To: linac-eng@plato.aristotle.net Subject: morning warm-up I like to get more info on morning warm-ups who is should be doing them. Any thing group has I could use thanks. DISCLAIMER: This e-mail contains proprietary information some or all of which may be confidential or legally privileged. It is for the exclusive use of the intended recipient(s) only. If an addressing or transmission error has misdirected this e-mail and you are not the intended recipient(s), please notify the author by replying to this e-mail. If you are not the intended recipient you must not use, disclose, distribute, copy, print, or rely on this e-mail, as this may be unlawful. This information is confidential and intended solely for the use of the individual or entity to whom it is addressed. If you have received this email in error please notify the sender or our Customer Support Center at (262) 928-2777. We have scanned this email and its attachments for malicious content. However, the recipient should check this email and any attachments for the presence of viruses. ProHealth Care accepts no liability for any damage caused by any virus transmitted by this email. --Boundary_(ID_HLqYkjlPNobijc2V4kQBog) Content-type: text/html; charset=iso-8859-1
Hi
 
Here at Waukesha we stopped warming up the Linac's. The techs come in initialize the Mlc, fil delay and do the output check and they are ready to go. Years ago with the 1800 I did a AM check because Physics requested it and never really thought about why. I am at the hospital early in case problems arise and I use my early starting time to do PM on the machines. This may not work for those who come in later. The good thing is that the Techs know how to get everything running by them self's making them more independent. So far so good.
-----Original Message-----
From: Graham Chalmers [mailto:Graham.Chalmers@uhb.nhs.uk]
Sent: Monday, March 08, 2004 3:49 AM
To: 'PPATNAUDE2@aol.com'; linac-eng@plato.aristotle.net
Subject: RE: morning warm-up

Here in Birmingham.

 

Daily - the workshop technical staff run up the linacs. Radiographers (those who treat patients) then perform a series of daily QC checks and a dose constancy measurement before treatments start following protocols written by Radiotherapy Physics.

 

W/ends - Radiographers run-up the machines they use for on-call. These are left at the powered off status (Elekta) so all is required is to make a few keyboard entries. Radiographers are not permitted to enter service mode. Should there be any problems then we have a workshop technician or QA physicist on call

 

All the run-up instructions are written down so the staff performing the run-up are working to a protocol.

 

In fact we now leave 4 of our 6 machines fully powered up overnight for stability so all the technician has to do is select a few beams to run as a warmup sequence without waiting for warmup timers etc.

 

I think the bottom line is that you have to be happy that whoever is running up is competent to do so and will spot when the unit is not working fine. Obviously too, it is beneficial to have staff available to sort the simple morning problems before they eat into clinical time

 

With best wishes

 

Graham Chalmers

 

 

Graham Chalmers 

Radiotherapy Physics

University Hospital Birmingham NHS Trust

Birmingham B15 2TH

0121-627-2266

 

 

 

 

DISCLAIMER: This e-mail contains proprietary information some or all of which may be confidential or legally privileged. It is for the exclusive use of the intended recipient(s) only. If an addressing or transmission error has misdirected this e-mail and you are not the intended recipient(s), please notify the author by replying to this e-mail. If you are not the intended recipient you must not use, disclose, distribute, copy, print, or rely on this e-mail, as this may be unlawful.

-----Original Message-----
From: PPATNAUDE2@aol.com [mailto:PPATNAUDE2@aol.com]
Sent: 05 March 2004 23:53
To: linac-eng@plato.aristotle.net
Subject: morning warm-up

 

I like to get more info on morning warm-ups who is should be doing them. Any thing group has I could use thanks.

DISCLAIMER: This e-mail contains proprietary information some or all of which may be confidential or legally privileged. It is for the exclusive use of the intended recipient(s) only. If an addressing or transmission error has misdirected this e-mail and you are not the intended recipient(s), please notify the author by replying to this e-mail. If you are not the intended recipient you must not use, disclose, distribute, copy, print, or rely on this e-mail, as this may be unlawful.



This information is confidential and intended solely for the use of the individual or entity to whom it is addressed.

If you have received this email in error please notify the sender or our Customer Support Center at (262) 928-2777.


We have scanned this email and its attachments for malicious content.

However, the recipient should check this email and any attachments for the presence of viruses.

ProHealth Care accepts no liability for any damage caused by any virus transmitted by this email.


--Boundary_(ID_HLqYkjlPNobijc2V4kQBog)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HU9000MNM0ARS@hubbard.azu.nl>; Mon, 8 Mar 2004 17:05:01 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004030817045717199 ; Mon, 08 Mar 2004 17:04:57 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id RAA12974; Mon, 08 Mar 2004 17:06:45 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma012712; Mon, 08 Mar 2004 17:05:42 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id IAA05114 for linac-eng-list; Mon, 08 Mar 2004 08:14:11 -0600 (CST) Received: from pop.sca.hin.sk.ca (shin.communitynet.ca [216.174.136.2]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id IAA05110 for ; Mon, 08 Mar 2004 08:14:09 -0600 (CST) Received: from smtp.scf.sk.ca (unverified [172.24.48.3]) by scf.sk.ca (Rockliffe SMTPRA 6.0.9) with SMTP id ; Mon, 08 Mar 2004 08:14:08 -0600 Received: (from RPC035 [172.24.49.35]) by smtp.scf.sk.ca (SAVSMTP 3.1.1.32) with SMTP id M2004030808140715053 ; Mon, 08 Mar 2004 08:14:07 -0600 Date: Mon, 08 Mar 2004 08:12:10 -0600 From: scot thiesson Subject: Re: RE: 21 EX Carrousel bearing In-reply-to: <7A3389A8D723D511B2260008C7B2BF390D630D@wmhmail.phci.org> Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net, "Williams, Rod" Message-id: Organization: a.b.c.c. MIME-version: 1.0 X-Mailer: Opera 6.0 build 1010 Content-type: text/plain; charset=windows-1252 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 (Normal) *** EOOH *** Date: Mon, 08 Mar 2004 08:12:10 -0600 From: scot thiesson Subject: Re: RE: 21 EX Carrousel bearing In-reply-to: <7A3389A8D723D511B2260008C7B2BF390D630D@wmhmail.phci.org> Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net, "Williams, Rod" Organization: a.b.c.c. X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 (Normal) I would like to second this motion... It is hard to acquire a database of problems and fixes when all you have are the problems... What was the final consensus with the carrousel bearing? Scot Thiesson Senior Physics Tech. Allan Blair Cancer Centre Regina Sask. Canada 3/8/2004 5:15:23 AM, "Williams, Rod" wrote: > > Hi to the Group, > > > I received this in my inbox today and thought to myself that it would have > been nice to see the responses to this question. I have my way of > > lubricating the bearing but it would have been nice to see what others were > doing. I think that sometimes some of us are to shy or might fear the > responses of others and therefore post directly to the person asking the > > question instead of adding the Linacs group to the response. I have seen > this in the past and thought today I would post about it to see what > everyone else thinks. I for one would like to see all the responses to all > > the questions and maybe if those who like to jump on someone would back off, > I for one have become a kinder gentler human. (: Maybe we could get all the > postings back on the main server. > > > -----Original Message----- > > From: David Horsman [mailto:Dhorsman@mail.rah.sa.gov.au] > Sent: Sunday, March 07, 2004 4:27 PM > To: linac-eng@plato.aristotle.net > > Subject: RE: 21 EX Carrousel bearing > > > > > Many thanks to all who replied. > > David Horsman > > Senior Technical Officer > >  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HU90048TPP2SC@hubbard.azu.nl>; Mon, 8 Mar 2004 18:24:40 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004030818243712061 ; Mon, 08 Mar 2004 18:24:37 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA26410; Mon, 08 Mar 2004 18:26:25 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xmaa26367; Mon, 08 Mar 2004 18:25:54 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id JAA06401 for linac-eng-list; Mon, 08 Mar 2004 09:34:42 -0600 (CST) Received: from PHSEXCHICI2.Partners.org (phsexchici2.partners.org [170.223.254.21]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id JAA06397 for ; Mon, 08 Mar 2004 09:34:41 -0600 (CST) Received: by phsexchici2.partners.org with Internet Mail Service (5.5.2657.72) id ; Mon, 08 Mar 2004 10:34:08 -0500 Date: Mon, 08 Mar 2004 10:34:03 -0500 From: "Gliddon, John S." Subject: Job Posting Sender: owner-linac-eng@plato.aristotle.net To: "'LINAC-ENG@PLATO.ARISTOTLE.NET'" Message-id: <6C43C12D8358D411B4E10008C7F4EFA705A2E62D@phsexch9.mgh.harvard.edu> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 08 Mar 2004 10:34:03 -0500 From: "Gliddon, John S." Subject: Job Posting Sender: owner-linac-eng@plato.aristotle.net To: "'LINAC-ENG@PLATO.ARISTOTLE.NET'" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Subject: Job Posting The Department of Radiation Oncology at Massachusetts General Hospital has an opening for a Linear Accelerator Engineer. The department has 8 linear accelerators and 2 simulators on our main campus and at a remote site approximately 25 miles away at the Emerson Hospital in Concord, MA. We have 2 Varian 2100C/D's w/ MLC (52 leaf and 120 leaf millennium) and PV, 1 Varian 600C w/ PV, 1 Varian 4/100, 2 Varian 21 EX's w/ MLC (120 leaf millennium) and PV and 1 Varian Ximatron simulator. There is a Varian 2100C/D w/ MLC (80 leaf) and Varian Ximatron at Concord. Additionally, we have a Siemens ME accelerator located in an operating room at MGH, a Philips 50 kVp x-ray unit and a 250 kVp x-ray unit at the research facility in the Charlestown Navy Yard. Responsibilities of this position include providing engineering coverage during the treatment day, routine maintenance and service of the above radiation therapy equipment, and engineering support for the physics and research staff. The candidate will also interface with outside contractors who service the shielding doors. Additional responsibilities include working with architects and contractors in the design and construction of treatment rooms and with the manufacturers in the installation of new machines. Some evening and weekend work is required. Qualifications are a thorough knowledge of test instruments and equipment and mechanical and high voltage safety procedures. Military electronics training or an Associate Degree in Electrical/Electronic or Biomed Engineering are required. Previous linear accelerator experience and OEM training is highly desirable. Please fax inquires and resumes to (617)726-3603, Att: Dr. P.J. Biggs Ph.D. or reply by e-mail to pjbiggs@partners.org Resumes may also be sent by mail to : Dr. P.J. Biggs Ph.D. Department of Radiation Oncology Massachusetts General Hospital Cox Bldg 3rd Floor Boston, Ma 02114 ________________________________________________ The information transmitted in this email is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material. Any review, retransmission, dissemination or other use of or taking of any action in reliance upon, this information by persons or entities other than the intended recipient is prohibited. If you received this email in error, please contact the sender and delete the material from any computer.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HU9004LXQ5DSC@hubbard.azu.nl>; Mon, 8 Mar 2004 18:34:27 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004030818342410302 ; Mon, 08 Mar 2004 18:34:24 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA27814; Mon, 08 Mar 2004 18:36:12 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma027766; Mon, 08 Mar 2004 18:35:42 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id JAA06103 for linac-eng-list; Mon, 08 Mar 2004 09:17:45 -0600 (CST) Received: from mail22.nhs.uk (mail22.nhs.uk [62.6.139.218]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id JAA06099 for ; Mon, 08 Mar 2004 09:17:42 -0600 (CST) Received: from [10.191.254.3] (helo=relayint2.nhs.uk) by mail22.nhs.uk with esmtp (MTC MTA) id 1B0MVE-0006jj-8W for linac-eng@plato.aristotle.net; Mon, 08 Mar 2004 15:17:12 +0000 Received: from relay.nhs.uk (194.62.42.144) by relayint2.nhs.uk (Syntegra-I2 7.0.008) id 4039DF71003B4CA3 for linac-eng@plato.aristotle.net; Mon, 08 Mar 2004 15:17:12 +0000 Received: from xchange.rsh.nhs.uk (194.227.83.13) by relay.nhs.uk (Syntegra-4 7.0.008) (authenticated as mail_rsh-tr_wmids_nhs_uk@es2002.nhs.uk) id 404C486D00034142 for linac-eng@plato.aristotle.net; Mon, 08 Mar 2004 15:17:12 +0000 Received: by mail.rsh-tr.wmids.nhs.uk with Internet Mail Service (5.5.2653.19) id ; Mon, 08 Mar 2004 15:15:10 +0000 Date: Mon, 08 Mar 2004 15:15:08 +0000 From: "MacMillan John (RLZ)" Subject: RE: morning warm-up Sender: owner-linac-eng@plato.aristotle.net To: "'linac-eng@plato.aristotle.net'" Message-id: <72E72DE4ACB3D6118CA500065B3FA7780173A834@mail.rsh-tr.wmids.nhs.uk> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: text/plain; CHARSET=US-ASCII Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 08 Mar 2004 15:15:08 +0000 From: "MacMillan John (RLZ)" Subject: RE: morning warm-up Sender: owner-linac-eng@plato.aristotle.net To: "'linac-eng@plato.aristotle.net'" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hi from Shrewsbury, UK We, the Radiotherapy Techs (engineers) do the morning run up's and output checks which makes the day slightly longer for us. This allows more clinical time in the day for the rads. We get our hours back by working a 4.5 day week (staff permitting of course)! Regards, John MacMillan Radiotherapy Physics Royal Shrewsbury Hospitals UK > -----Original Message----- > From: Graham Chalmers [SMTP:Graham.Chalmers@uhb.nhs.uk] > Sent: Monday, March 08, 2004 9:49 AM > To: 'PPATNAUDE2@aol.com'; linac-eng@plato.aristotle.net > Subject: RE: morning warm-up > > Here in Birmingham. > > > > Daily - the workshop technical staff run up the linacs. Radiographers > (those who treat patients) then perform a series of daily QC checks and a > dose constancy measurement before treatments start following protocols > written by Radiotherapy Physics. > > > > W/ends - Radiographers run-up the machines they use for on-call. These are > left at the powered off status (Elekta) so all is required is to make a > few keyboard entries. Radiographers are not permitted to enter service > mode. Should there be any problems then we have a workshop technician or > QA physicist on call > > > > All the run-up instructions are written down so the staff performing the > run-up are working to a protocol. > > > > In fact we now leave 4 of our 6 machines fully powered up overnight for > stability so all the technician has to do is select a few beams to run as > a warmup sequence without waiting for warmup timers etc. > > > > I think the bottom line is that you have to be happy that whoever is > running up is competent to do so and will spot when the unit is not > working fine. Obviously too, it is beneficial to have staff available to > sort the simple morning problems before they eat into clinical time > > > > With best wishes > > > > Graham Chalmers > > > > > > Graham Chalmers > > Radiotherapy Physics > > University Hospital Birmingham NHS Trust > > Birmingham B15 2TH > > 0121-627-2266 > > > > > > > > > > DISCLAIMER: This e-mail contains proprietary information some or all of > which may be confidential or legally privileged. It is for the exclusive > use of the intended recipient(s) only. If an addressing or transmission > error has misdirected this e-mail and you are not the intended > recipient(s), please notify the author by replying to this e-mail. If you > are not the intended recipient you must not use, disclose, distribute, > copy, print, or rely on this e-mail, as this may be unlawful. > > -----Original Message----- > From: PPATNAUDE2@aol.com [mailto:PPATNAUDE2@aol.com] > Sent: 05 March 2004 23:53 > To: linac-eng@plato.aristotle.net > Subject: morning warm-up > > > > I like to get more info on morning warm-ups who is should be doing them. > Any thing group has I could use thanks. > > DISCLAIMER: This e-mail contains proprietary information some or all of > which may be confidential or legally privileged. It is for the exclusive > use of the intended recipient(s) only. If an addressing or transmission > error has misdirected this e-mail and you are not the intended > recipient(s), please notify the author by replying to this e-mail. If you > are not the intended recipient you must not use, disclose, distribute, > copy, print, or rely on this e-mail, as this may be unlawful. >  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HU900598QMZV5@hubbard.azu.nl>; Mon, 8 Mar 2004 18:45:01 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004030818445800831 ; Mon, 08 Mar 2004 18:44:58 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA28980; Mon, 08 Mar 2004 18:46:47 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma028950; Mon, 08 Mar 2004 18:46:18 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id JAA07044 for linac-eng-list; Mon, 08 Mar 2004 09:53:51 -0600 (CST) Received: from 17RADLAPPC01 ([65.174.193.254]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id JAA07036 for ; Mon, 08 Mar 2004 09:53:49 -0600 (CST) Date: Mon, 08 Mar 2004 10:53:16 -0500 From: Scott Mange Subject: Fwd: LINAC STANDBY MODE Sender: owner-linac-eng@plato.aristotle.net X-Sender: smange@mailhost.det.ameritech.net To: linac-eng@plato.aristotle.net Cc: csniyer77@aol.com Message-id: <5.1.0.14.2.20040308105143.00a73200@mailhost.det.ameritech.net> MIME-version: 1.0 X-Mailer: QUALCOMM Windows Eudora Version 5.1 Content-type: MULTIPART/MIXED; BOUNDARY="Boundary_(ID_OOh1YOAdf+yHAqkMtQ8V8Q)"; x-avg-checked=avg-ok-3D8D53DA Precedence: bulk X-GCMulti: 1 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 08 Mar 2004 10:53:16 -0500 From: Scott Mange Subject: Fwd: LINAC STANDBY MODE Sender: owner-linac-eng@plato.aristotle.net X-Sender: smange@mailhost.det.ameritech.net To: linac-eng@plato.aristotle.net Cc: csniyer77@aol.com X-GCMulti: 1 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f --Boundary_(ID_OOh1YOAdf+yHAqkMtQ8V8Q) Content-type: text/plain; format=flowed; charset=us-ascii; x-avg-checked=avg-ok-3D8D53DA Content-transfer-encoding: 8bit Can someone on the engineering list answer this for me as much as Charles? Charles, I hope you don't mind, but I've sent this along to the linac engineering list server as I believe these guys (and gals??) would be most qualified to answer your question. Thanks to everyone in advance. Scott Mange >X-Originating-IP: [141.217.1.57] >Date: Mon, 8 Mar 2004 10:34:52 EST >Reply-To: Csniyer77@AOL.COM >Sender: Global Medical Physics Mailing List >From: Charles Narayanan >Subject: LINAC STANDBY MODE >To: MEDPHYS@LISTS.WAYNE.EDU > > >I would like to know the positives and negatives of leaving the LINAC on >overnight instead of STANDBY mode, This is in ref. to the VARIAN 2100C >Thank you >Charles Narayanan --Boundary_(ID_OOh1YOAdf+yHAqkMtQ8V8Q) Content-type: text/plain; x-avg-checked=avg-ok-3D8D53DA; x-avg=cert; charset=us-ascii Content-disposition: inline --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.605 / Virus Database: 385 - Release Date: 3/1/04 --Boundary_(ID_OOh1YOAdf+yHAqkMtQ8V8Q)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HU900A65WDYKJ@hubbard.azu.nl>; Mon, 8 Mar 2004 20:49:11 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004030820490925517 ; Mon, 08 Mar 2004 20:49:09 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id UAA13201; Mon, 08 Mar 2004 20:50:56 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma013104; Mon, 08 Mar 2004 20:50:18 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id LAA10269 for linac-eng-list; Mon, 08 Mar 2004 11:50:21 -0600 (CST) Received: from mail.cbdha.nshealth.ca (mail.cbdha.nshealth.ca [142.176.129.245]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id LAA10261 for ; Mon, 08 Mar 2004 11:50:18 -0600 (CST) Received: from ELECTECH ([128.222.7.122]) by mail.cbdha.nshealth.ca (Merak 7.2.3) with SMTP id LOA74478 for ; Mon, 08 Mar 2004 13:50:16 -0400 Date: Mon, 08 Mar 2004 13:51:28 -0400 From: Greg MacKinnon Subject: LCD on Ximatron CX Sender: owner-linac-eng@plato.aristotle.net To: "LinacEng (E-mail)" Message-id: <001001c40535$fc2b2cb0$7a07de80@ELECTECH> MIME-version: 1.0 X-Mailer: Microsoft Outlook CWS, Build 9.0.2416 (9.0.2910.0) Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 7bit Importance: Normal Precedence: bulk X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 (Normal) *** EOOH *** Date: Mon, 08 Mar 2004 13:51:28 -0400 From: Greg MacKinnon Subject: LCD on Ximatron CX Sender: owner-linac-eng@plato.aristotle.net To: "LinacEng (E-mail)" Importance: Normal X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 (Normal) Hi Group Ximatron CX sn790 Has anyone replaced any of the Ximatron CRT monitors with LCD displays? If so, was there any special setting or things required to enable the change. I have tried using Dell 17" ultra sharp lcd but in both location the display was unable to work. Either it would not sync or every so often the display would go blank then return. Any information would be appreciated Thanks __________________________________________ Greg MacKinnon, C.E.T. Linear Accelerator Service Technologist Cape Breton Cancer Centre 1482 George Street Sydney, Nova Scotia, Canada B1P 1P3 tel: (902) 567-8076 fax: (902) 567-8075 email: mackinnongreg@cbdha.nshealth.ca  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUA00LD2APV9U@hubbard.azu.nl>; Tue, 9 Mar 2004 01:58:45 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004030901584212005 ; Tue, 09 Mar 2004 01:58:42 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id CAA13479; Tue, 09 Mar 2004 02:00:29 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma013476; Tue, 09 Mar 2004 02:00:21 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id QAA16773 for linac-eng-list; Mon, 08 Mar 2004 16:46:47 -0600 (CST) Received: from adl0133.systems.sa.gov.au (adl0133.systems.sa.gov.au [143.216.236.20]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id QAA16769 for ; Mon, 08 Mar 2004 16:46:44 -0600 (CST) Received: from adl0133.systems.sa.gov.au (localhost [127.0.0.1]) by adl0133.systems.sa.gov.au OUTGOING (8.12.10/8.12.7) with ESMTP id i28Mk9xF028366 for ; Tue, 09 Mar 2004 09:16:09 +1030 (CST) Received: from rahsun153.rah.sa.gov.au (mailhub.rah.sa.gov.au [10.19.241.188]) by adl0133.systems.sa.gov.au INCOMING (8.12.10/8.12.7) with ESMTP id i28Mk30w028275 for ; Tue, 09 Mar 2004 09:16:04 +1030 (CST) Received: from mail.rah.sa.gov.au (MERCURY-2 [10.19.241.91]) by rahsun153.rah.sa.gov.au (8.12.9/8.12.8) with ESMTP id i28Mk0jP021124 for ; Tue, 09 Mar 2004 09:16:02 +1030 (CST) Received: from Spooler by mail.rah.sa.gov.au (Mercury/32 v4.01a) ID MO0000BE; Tue, 09 Mar 2004 09:16:02 +1030 Received: from spooler by mail.rah.sa.gov.au (Mercury/32 v4.01a); Tue, 09 Mar 2004 09:15:46 +1030 Date: Tue, 09 Mar 2004 09:15:07 +1030 From: David Horsman Subject: 21 EX carrousel bearing Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <200403082246.i28Mk0jP021124@rahsun153.rah.sa.gov.au> Organization: Royal Adelaide Hospital MIME-version: 1.0 X-Mailer: Pegasus Mail for Win32 (v3.12a) Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 09 Mar 2004 09:15:07 +1030 From: David Horsman Subject: 21 EX carrousel bearing Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Organization: Royal Adelaide Hospital X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hello all, Here are the responses I received:- Hi, David It's not too tough to access the carrosel bearing to lube it. Here's what you do: 1)Rotate the gantry to 270 degrees (Varian scale) 2)Remove the gantry cover (canoe). 3)Remove the collimator cover. 4)Remove the long jaw cover (the fixed colimator cover under the round moving collimator cover) 5)Remove the research port sheiding piece of lead. This is the one directly in front of the centerline of the guide. It is held in place with two hex head bolts. CAREFULLY lift it UP and AWAY from its rest position. Don't let the base of the sheilding lead bang against the carosell, which is directly underneath. You now can see a segment of the carrosel bearing--plenty to gain access to the ebaring to lubricate it. I have had decent luck using either Tri-Flow (a teflon base lubricant, which generally doesn;t break down under radiation), or a thin white lithium grease (not QUITE as good as Tri Flow in my opinion). Set up the machine to use the pendant redirect mode in service mode, and cycle through the energies, adding a little more lube as you rotate the bearing.Watch your fingers, and wipe up any excess lube! Be careful not to touch the scattering foils or the x-rqay filters--you don't want to break or bend anything. When you finish applying the lube, rotate the carrosel around so that an open port( usually covered by a thin brass plate) is in view--this protects the foils and the filters as you put the sheilding lead back in place. Replace the sheilding lead piece, being careful, once again, not to bang the carrosel. Make sure you screws are secure. reinstall the cove! rs you removed, and rotate the gantry up to 180 (Varian scale). It's usally a good idea to run through a carrosel calibration at this point. Open up the aux electronics cover, andflip the little toggle switch up;it's usually in the center position. Rotate the BCD rotory switch to F, so you can watch the codes. Press the black pushbutton to start the calibration sequence. It will halt within a few second, with a (I think) code 06--it's waiting for you to push the button once more to continue calibration. Push the button, and it will cycle around to each port, repeating the same three codes over and over. Eventually, you should get a sucessful calibration--the code will read 88. return the toggle switch to the center position, and move the BCD switch back to the 0 position--it should read a 00 code at this point. Lubing the carrosel is useful if you start getting weird codes, or ones that seem to not make any sense. I find that once or twice a year lubing the bearing! is adequate. The collimator bearing is another animal---most people I know have never lubed the collimator bearing. Why? mainly, because it is a damned good bearing, requireing pretty much no maintenance during its lifetime (hopefulyl), and second, it is a MAJOR pain to access to lubricate. If you REALLY REALLY want to do it, here's how you acess it to lube. If you have an MLC, it triples the workload to do this--you have to basically remove all MLC boards and systems to gain access to the base of the collimator. This is first. Now, assuming you have the MLC< if you have one, out of the way, take the gantry cover, collimator cover, and long jaw cover off. Rotate the gantry down to Varian 360 or zero(head pointing up). Remove all four ring lead pieces--be careful not to bang the cables, or the collimator drive assembly or readout pot. You will now see the collimator bearing retaining ring--it is a segmented ring, broken up into two or three segments. THe segments are held in place by a bunch of flat head countersunk allen head screws. More than likely, they will be frozen in place, and you will bend or break your allen wrench trying to break them loose. You may need to use an impact wrench to break them loose. Pry yp the rings, moving them around until you can pull them out of the way. Personally, for lubing, I would remove only one segment, and shove the other around--they can be a pain to pry out of the way. Try flow again is a decent lube. When you're done, reinstall the etaining ring, tighten to about (as I recall--don;t quote me on this before you check) 60 inch-pounds of torque on the screws. Reinstall the lead, covers, and reassemble the MLC if necessary. Now you know why the collimator bearing is practically NEVER lubricated, unless it is done as part of having to pull the head to replace a cable. Hope this asnwers your questions. Good luck! ------------------------------------------------------- Turn the gantry to 270 ( Varian scale)....Take off center lead piece, You should now be able to see the position switches used for hex codeing of carrousel position....You should also be able to see the carousel chain....You can lube the chain anywhere that it is accessible ( You will need a straw), with tri flow....I usually lube it near the front of the machine....Spray the chain while cycling through all energies....You typically don't have to do this very often....Be careful to spray only the chain... ------------------------------------------- We just went through this issue here. According to our Varian rep, it should be done approx. every year(that may be 6 months though, I'm not absolutely sure, but you can check it periodically). You should use tri-flow which is a teflon based lube. A good point to access it is by removing the frontmost piece of lead that exposes the filter opposite the one in the beam. I don't know about the collimator bearing. David Horsman Senior Technical Officer Medical Physics Royal Adelaide Hospital North Terrace, Adelaide, South Australia Australia Ph +61 8 8222 4188 Fx +61 8 8222 5937 dhorsman@mail.rah.sa.gov.au  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUB004E726769@hubbard.azu.nl>; Tue, 9 Mar 2004 11:51:50 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004030911514221550 ; Tue, 09 Mar 2004 11:51:42 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id LAA04009; Tue, 09 Mar 2004 11:53:30 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma003791; Tue, 09 Mar 2004 11:52:35 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id DAA23532 for linac-eng-list; Tue, 09 Mar 2004 03:00:47 -0600 (CST) Received: from mail14.messagelabs.com (mail14.messagelabs.com [212.125.75.19]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id DAA23528 for ; Tue, 09 Mar 2004 03:00:44 -0600 (CST) Received: (qmail 8645 invoked from network); Tue, 09 Mar 2004 09:00:11 +0000 Received: from host217-37-197-245.in-addr.btopenworld.com (HELO CHEXCHANGE1.cromwellhospital.com) (217.37.197.245) by server-12.tower-14.messagelabs.com with SMTP; Tue, 09 Mar 2004 09:00:11 +0000 Received: by CHEXCHANGE1.cromwellhospital.com with Internet Mail Service (5.5.2653.19) id ; Tue, 09 Mar 2004 09:04:34 +0000 Date: Tue, 09 Mar 2004 09:04:31 +0000 From: Kerry Clark Subject: RE: LINAC STANDBY MODE Sender: owner-linac-eng@plato.aristotle.net To: 'Scott Mange' , linac-eng@plato.aristotle.net Cc: csniyer77@aol.com Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-VirusChecked: Checked X-Env-Sender: Kerry.Clark@Cromwellhospital.com X-Msg-Ref: server-12.tower-14.messagelabs.com!1078822811!4739945 X-StarScan-Version: 5.1.15; banners=cromwellhospital.com,-,- X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 09 Mar 2004 09:04:31 +0000 From: Kerry Clark Subject: RE: LINAC STANDBY MODE Sender: owner-linac-eng@plato.aristotle.net To: 'Scott Mange' , linac-eng@plato.aristotle.net Cc: csniyer77@aol.com X-VirusChecked: Checked X-Env-Sender: Kerry.Clark@Cromwellhospital.com X-Msg-Ref: server-12.tower-14.messagelabs.com!1078822811!4739945 X-StarScan-Version: 5.1.15; banners=cromwellhospital.com,-,- X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f I would have said it's switched to standby so all the filaments last longer. Varian have just modified my 2100 so the klystron has 110V on the filament transformer in standby to reduce the cold start problems I have been seeing here. Kerry -----Original Message----- From: Scott Mange [mailto:smange@ameritech.net] Sent: 08 March 2004 15:53 To: linac-eng@plato.aristotle.net Cc: csniyer77@aol.com Subject: Fwd: LINAC STANDBY MODE Can someone on the engineering list answer this for me as much as Charles? Charles, I hope you don't mind, but I've sent this along to the linac engineering list server as I believe these guys (and gals??) would be most qualified to answer your question. Thanks to everyone in advance. Scott Mange >X-Originating-IP: [141.217.1.57] >Date: Mon, 8 Mar 2004 10:34:52 EST >Reply-To: Csniyer77@AOL.COM >Sender: Global Medical Physics Mailing List >From: Charles Narayanan >Subject: LINAC STANDBY MODE >To: MEDPHYS@LISTS.WAYNE.EDU > > >I would like to know the positives and negatives of leaving the LINAC on >overnight instead of STANDBY mode, This is in ref. to the VARIAN 2100C >Thank you >Charles Narayanan ________________________________________________________________________ This e-mail has been scanned for all viruses by Star Internet. The service is powered by MessageLabs. For more information on a proactive anti-virus service working around the clock, around the globe, visit: http://www.star.net.uk ________________________________________________________________________ ************************************************************************* Privileged or Confidential Information may be contained in this message. If you are not the addressee of this message (or responsible for its delivery to the addressee), you may not review or copy it, deliver it to anyone else or use information in it. In such a case, you should destroy this message and kindly notify the sender by reply email. Internet communications are not secure and therefore the Cromwell Hospital does not accept legal responsibility for the contents of this message. Although the Cromwell Hospital operates anti-virus programs, it does not accept responsibility for any damage whatsoever that is caused by viruses being passed. Opinions, conclusions and other information in this message that do not relate to the official business of the Cromwell Hospital are neither given nor endorsed by it. Thank you. ************************************************************************* ________________________________________________________________________ This e-mail has been scanned for all viruses by Star Internet. The service is powered by MessageLabs. For more information on a proactive anti-virus service working around the clock, around the globe, visit: http://www.star.net.uk ________________________________________________________________________  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUB00G4V9MSY4@hubbard.azu.nl>; Tue, 9 Mar 2004 14:33:01 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004030914324628524 ; Tue, 09 Mar 2004 14:32:46 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id OAA11238; Tue, 09 Mar 2004 14:34:33 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xmaa10973; Tue, 09 Mar 2004 14:33:28 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id FAA25937 for linac-eng-list; Tue, 09 Mar 2004 05:34:49 -0600 (CST) Received: from intfw1.phci.org (user.phci.org [207.67.109.70]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id FAA25933 for ; Tue, 09 Mar 2004 05:34:48 -0600 (CST) Received: from intfw1.phci.org (root@localhost) by intfw1.phci.org with ESMTP id i29BYHUk003322 for ; Tue, 09 Mar 2004 05:34:17 -0600 (CST) Received: from zixvpm00.phci.org (zixvpm01.phci.org [172.20.3.21]) by intfw1.phci.org with ESMTP id i29BYHTo003319 for ; Tue, 09 Mar 2004 05:34:17 -0600 (CST) Received: from zixvpm01.phci.org (ZixVPM [127.0.0.1]) by Outbound.phci.org (Proprietary) with ESMTP id 6FFC31A408E for ; Tue, 09 Mar 2004 05:34:17 -0600 (CST) Received: from smtpscan.phci.org (smtpscan.phci.org [172.20.3.10]) by zixvpm00.phci.org (Proprietary) with SMTP id 6DF181A0052 for ; Tue, 09 Mar 2004 05:34:15 -0600 (CST) Received: from rwdmail.phci.org ([IP=10.16.2.5]) by eSafe SMTP Relay 1078831761; Tue Mar 9 05:43:43 2004 Received: by rwdmail.phci.org with Internet Mail Service (5.5.2657.72) id ; Tue, 09 Mar 2004 05:34:14 -0600 Date: Tue, 09 Mar 2004 05:34:04 -0600 From: "Williams, Rod" Subject: RE: LINAC STANDBY MODE Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <7A3389A8D723D511B2260008C7B2BF390D6312@wmhmail.phci.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_j3H2D1cdMRvdFKdhN/0Wog)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 09 Mar 2004 05:34:04 -0600 From: "Williams, Rod" Subject: RE: LINAC STANDBY MODE Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_j3H2D1cdMRvdFKdhN/0Wog) Content-type: text/plain; charset=iso-8859-1 Is the machine going to be under contract for it's lifetime.?? This debate on keeping electronics on all time will probably never come to a consensuses. Keeping the RF driver on and running at max power output bothers me a little. The Accel and Kly power supply pumping out a few amps might be of concern and the extra cooling needed might bother someone who is thinking green. Experience for me has shown that electrolytic capacitors fail more than ICs do and these are affected by heat and heat comes from being on. Just my opinion > >I would like to know the positives and negatives of leaving the LINAC on >overnight instead of STANDBY mode, This is in ref. to the VARIAN 2100C >Thank you >Charles Narayanan _______ This information is confidential and intended solely for the use of the individual or entity to whom it is addressed. If you have received this email in error please notify the sender or our Customer Support Center at (262) 928-2777. We have scanned this email and its attachments for malicious content. However, the recipient should check this email and any attachments for the presence of viruses. ProHealth Care accepts no liability for any damage caused by any virus transmitted by this email. --Boundary_(ID_j3H2D1cdMRvdFKdhN/0Wog) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: quoted-printable RE: LINAC STANDBY MODE

Is the machine going to be under contract for it's life= time.?? This debate on keeping electronics on all time will probably neve= r come to a consensuses. Keeping the RF driver on and running at max powe= r output bothers me a little. The Accel and Kly power supply pumping out = a few amps might be of concern and the extra cooling needed might bother = someone who is thinking green. Experience for me has shown that electroly= tic capacitors fail more than ICs do and these are affected by heat and h= eat comes from being on.  Just my opinion


>
>I would like to know the positives and negatives o= f leaving the LINAC on
>overnight instead of STANDBY mode, This is in ref.= to the VARIAN 2100C
>Thank you
>Charles Narayanan


_______


This information is confidential and intended solely fo= r the use of the individual or entity to whom it is addressed.
If you have received this email in error please notify= the sender or our Customer Support Center at (262) 928-2777.

We have scanned this email and its attachments for mali= cious content.
However, the recipient should check this email and any= attachments for the presence of viruses.
ProHealth Care accepts no liability for any damage cau= sed by any virus transmitted by this email.

--Boundary_(ID_j3H2D1cdMRvdFKdhN/0Wog)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUB00IBSAWVBY@hubbard.azu.nl>; Tue, 9 Mar 2004 15:00:36 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004030915002913944 ; Tue, 09 Mar 2004 15:00:29 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id PAA17827; Tue, 09 Mar 2004 15:02:18 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma017641; Tue, 09 Mar 2004 15:01:47 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id GAA26221 for linac-eng-list; Tue, 09 Mar 2004 06:03:18 -0600 (CST) Received: from imo-m18.mx.aol.com (imo-m18.mx.aol.com [64.12.138.208]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id GAA26214 for ; Tue, 09 Mar 2004 06:03:17 -0600 (CST) Received: from PPATNAUDE2@aol.com by imo-m18.mx.aol.com (mail_out_v37.4.) id y.67.237c18a3 (3850); Tue, 09 Mar 2004 07:02:41 -0500 (EST) Date: Tue, 09 Mar 2004 07:02:40 -0500 (EST) From: PPATNAUDE2@aol.com Subject: still trying for more info on warm-up Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Cc: jerry.pollard@bhs.org Message-id: <67.237c18a3.2d7f0c60@aol.com> MIME-version: 1.0 X-Mailer: 7.0 for Windows sub 10709 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_o6bVxFFNceOeCchr7+0tBw)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 09 Mar 2004 07:02:40 -0500 (EST) From: PPATNAUDE2@aol.com Subject: still trying for more info on warm-up Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Cc: jerry.pollard@bhs.org X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f --Boundary_(ID_o6bVxFFNceOeCchr7+0tBw) Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7bit still hoping to get more input on who perform morning warm-ups at other site i have herd from a few people i no more read our letter please let me no thanks. peter.patnaude@bhs.org --Boundary_(ID_o6bVxFFNceOeCchr7+0tBw) Content-type: text/html; charset=US-ASCII Content-transfer-encoding: quoted-printable still hoping to get more= input on who perform morning warm-ups at other site i have herd from a few=20= people i no more read our letter please let me no thanks.
peter.patnaude@bhs.org --Boundary_(ID_o6bVxFFNceOeCchr7+0tBw)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUB00MGYEA2PP@hubbard.azu.nl>; Tue, 9 Mar 2004 16:13:17 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004030916131417800 ; Tue, 09 Mar 2004 16:13:14 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id QAA06523; Tue, 09 Mar 2004 16:15:01 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma006241; Tue, 09 Mar 2004 16:13:57 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id GAA26967 for linac-eng-list; Tue, 09 Mar 2004 06:55:10 -0600 (CST) Received: from whsnt76.wmdomain1.wellmont.org ([151.102.97.118]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id GAA26963 for ; Tue, 09 Mar 2004 06:55:08 -0600 (CST) Date: Tue, 09 Mar 2004 07:54:37 -0500 From: "Falcinelli, Marc A" Subject: Elekta info. Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_aFLxNqLLUzDgqbIYO7JecA)" Precedence: bulk X-MimeOLE: Produced By Microsoft Exchange V6.0.6375.0 Content-Class: urn:content-classes:message Thread-Topic: Elekta info. Thread-Index: AcQF1a3W4djVa8M8S+GhPdMTD8NOsw== X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 09 Mar 2004 07:54:37 -0500 From: "Falcinelli, Marc A" Subject: Elekta info. Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-MimeOLE: Produced By Microsoft Exchange V6.0.6375.0 Content-Class: urn:content-classes:message Thread-Topic: Elekta info. Thread-Index: AcQF1a3W4djVa8M8S+GhPdMTD8NOsw== X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This is a multi-part message in MIME format. --Boundary_(ID_aFLxNqLLUzDgqbIYO7JecA) Content-type: text/plain; charset=us-ascii Content-transfer-encoding: quoted-printable Fellow service engineers, I have a few questions to present for discussion: 1. Are there alternate part sources available in the USA for the Elekta linear accelerators? 2. For those of you who have sites with both a newer Elekta and Varian high energy C-series machine, I am looking for beam matching information. How close can the two machines be beam matched? Are there any specifications you or your physics staff outlined regarding beam matching when you purchased either brand to add to your department? 3. Also I would be interested in any other head to head performance information between the Elekta and Varian you may wish to contribute. Thank you, Marc --Boundary_(ID_aFLxNqLLUzDgqbIYO7JecA) Content-type: text/html; charset=us-ascii Content-transfer-encoding: quoted-printable Elekta info.

Fellow service engineers,

 I have a few questions to present for = discussion:

1.      = Are there alternate part sources = available in the USA for the Elekta linear accelerators?

2.      For those of you who have sites with both a newer Elekta = and Varian high energy C-series machine, I am looking for beam matching information. How = close can the two machines be beam matched? Are there any specifications = you or your physics staff outlined regarding beam matching when you = purchased either brand to add to your department?

3.      Also I would be interested in any other head to head = performance information between the Elekta and Varian you may wish to = contribute.

Thank = you,

Marc

--Boundary_(ID_aFLxNqLLUzDgqbIYO7JecA)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUB001EFFS7MX@hubbard.azu.nl>; Tue, 9 Mar 2004 16:45:46 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004030916454218620 ; Tue, 09 Mar 2004 16:45:42 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id QAA14735; Tue, 09 Mar 2004 16:47:30 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma014628; Tue, 09 Mar 2004 16:46:48 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id HAA27720 for linac-eng-list; Tue, 09 Mar 2004 07:41:06 -0600 (CST) Received: from cato.nettas.net (cato.nettas.net [202.7.15.72]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id HAA27716 for ; Tue, 09 Mar 2004 07:41:03 -0600 (CST) Received: from dchs6202.dchs.tas.gov.au (exch.dchs.tas.gov.au [147.109.65.6]) by cato.nettas.net (8.12.7-20030918/8.12.7) with ESMTP id i29DgmGZ011130 for ; Wed, 10 Mar 2004 00:42:49 +1100 (EST) Received: by exch.dchs.tas.gov.au with Internet Mail Service (5.5.2655.55) id ; Wed, 10 Mar 2004 00:40:58 +1100 Date: Wed, 10 Mar 2004 00:40:52 +1100 From: Johnson Glenn Subject: DeQ in 23EX sn 335 (KLM) Sender: owner-linac-eng@plato.aristotle.net To: "LINAC_ENGINEERS (E-mail)" Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2655.55) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 10 Mar 2004 00:40:52 +1100 From: Johnson Glenn Subject: DeQ in 23EX sn 335 (KLM) Sender: owner-linac-eng@plato.aristotle.net To: "LINAC_ENGINEERS (E-mail)" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f G'Day All. One thing I've noticed in "High" Mode Modulator ( eg 16e, 20e, 18X ), with Dose Rate / PFN Servo's on or off, is the DeQ value on HVPSI waveform is max 30%. At initial Beam On, the value can start from 5% and climb to 30 %. "Low" Modulator Mode is 50% - 60%, which is normal. Supposedly DeQ shouldn't change that much between X / e modes. The PFN program levels are the original values. I never touch them anyway. Question............... can DeQ be adjusted separately from each Modulator Mode (High / Low) ?? Has anyone experienced these levels that I'm getting. Good on Ya, Glenn Johnson  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUB001IRFUXMX@hubbard.azu.nl>; Tue, 9 Mar 2004 16:47:23 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004030916472129701 ; Tue, 09 Mar 2004 16:47:21 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id QAA15101; Tue, 09 Mar 2004 16:49:09 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma014966; Tue, 09 Mar 2004 16:48:25 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id HAA27890 for linac-eng-list; Tue, 09 Mar 2004 07:52:03 -0600 (CST) Received: from whsnt76.wmdomain1.wellmont.org ([151.102.97.118]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id HAA27886 for ; Tue, 09 Mar 2004 07:52:02 -0600 (CST) Date: Tue, 09 Mar 2004 08:51:31 -0500 From: "Falcinelli, Marc A" Subject: Pros and Cons Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_E2WkaXYRxWQI/nrrrUK+tw)" Precedence: bulk X-MimeOLE: Produced By Microsoft Exchange V6.0.6375.0 Content-Class: urn:content-classes:message Thread-Topic: Pros and Cons Thread-Index: AcQF3aCLj8l/3Qe8Qlm+QFdXieGCFg== X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 09 Mar 2004 08:51:31 -0500 From: "Falcinelli, Marc A" Subject: Pros and Cons Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-MimeOLE: Produced By Microsoft Exchange V6.0.6375.0 Content-Class: urn:content-classes:message Thread-Topic: Pros and Cons Thread-Index: AcQF3aCLj8l/3Qe8Qlm+QFdXieGCFg== X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This is a multi-part message in MIME format. --Boundary_(ID_E2WkaXYRxWQI/nrrrUK+tw) Content-type: text/plain; charset=us-ascii Content-transfer-encoding: quoted-printable Hello again, While I have you all thinking about my previous questions, I would like to pose a couple of more questions based on general theory of operation NOT manufacturer brand. Any technical references anyone may recommend for reading would be greatly appreciated. 1. What are advantages/disadvantages of Standing Wave accelerator guides compared to Traveling Wave guides other than physical size and length? 2. What are advantages/disadvantages to Magnetron verses Klystron microwave drive for a high energy multiple energy based linear accelerators? Thank you, Marc --Boundary_(ID_E2WkaXYRxWQI/nrrrUK+tw) Content-type: text/html; charset=us-ascii Content-transfer-encoding: quoted-printable Pros and Cons

Hello = again,

 While I have you all thinking about my previous = questions, I would like to pose a couple of more questions based on general theory of = operation NOT manufacturer brand. Any technical references = anyone may recommend for reading would be greatly = appreciated.

1.      = What are advantages/disadvantages of = Standing Wave accelerator guides compared to Traveling Wave guides other = than physical size and length?

2.      What are advantages/disadvantages to = Magnetron = verses Klystron microwave drive for a high = energy multiple energy based linear accelerators?

Thank = you,

Marc

--Boundary_(ID_E2WkaXYRxWQI/nrrrUK+tw)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUB002HXG8034@hubbard.azu.nl>; Tue, 9 Mar 2004 16:55:14 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004030916551016699 ; Tue, 09 Mar 2004 16:55:11 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id QAA17029; Tue, 09 Mar 2004 16:56:59 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma016916; Tue, 09 Mar 2004 16:56:20 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id IAA28189 for linac-eng-list; Tue, 09 Mar 2004 08:06:04 -0600 (CST) Received: from mail.cbdha.nshealth.ca (mail.cbdha.nshealth.ca [142.176.129.245]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id IAA28185 for ; Tue, 09 Mar 2004 08:06:02 -0600 (CST) Received: from ELECTECH ([128.222.7.122]) by mail.cbdha.nshealth.ca (Merak 7.2.3) with SMTP id LOA74478; Tue, 09 Mar 2004 10:06:02 -0400 Date: Tue, 09 Mar 2004 10:07:15 -0400 From: Greg MacKinnon Subject: RE: morning warm-up In-reply-to: <107.2ce85c15.2d7a6cc3@aol.com> Sender: owner-linac-eng@plato.aristotle.net To: PPATNAUDE2@aol.com Cc: "LinacEng (E-mail)" Message-id: <002d01c405df$d3b7a3d0$7a07de80@ELECTECH> MIME-version: 1.0 X-Mailer: Microsoft Outlook CWS, Build 9.0.2416 (9.0.2910.0) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_rp9dSzb2G48/G9SFounWtA)" Importance: Normal Precedence: bulk X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 (Normal) *** EOOH *** Date: Tue, 09 Mar 2004 10:07:15 -0400 From: Greg MacKinnon Subject: RE: morning warm-up In-reply-to: <107.2ce85c15.2d7a6cc3@aol.com> Sender: owner-linac-eng@plato.aristotle.net To: PPATNAUDE2@aol.com Cc: "LinacEng (E-mail)" Importance: Normal X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 (Normal) This is a multi-part message in MIME format. --Boundary_(ID_rp9dSzb2G48/G9SFounWtA) Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 7bit Here in our clinic the Linear Service Tech is reasonable for morning checkout. The therapist arrive a half hour prior to first patient to perform QA tasks. We are a small clinic with two Clinacs and a Ximatron. Arriving early allows for going home earlier but just in case of any problems I am on call until treatment day is complete. And yes, you typical have to return for maintenance after hours or weekends. I know of larger clinics which have therapist or junior physicist responsible for morning checkout but at least one Service guy is on site. __________________________________________ Greg MacKinnon, C.E.T. Linear Accelerator Service Technologist Cape Breton Cancer Centre 1482 George Street Sydney, Nova Scotia, Canada B1P 1P3 tel: (902) 567-8076 fax: (902) 567-8075 email: mackinnongreg@cbdha.nshealth.ca -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of PPATNAUDE2@aol.com Sent: Friday, March 05, 2004 7:53 PM To: linac-eng@plato.aristotle.net Subject: morning warm-up I like to get more info on morning warm-ups who is should be doing them. Any thing group has I could use thanks. --Boundary_(ID_rp9dSzb2G48/G9SFounWtA) Content-type: text/html; charset=us-ascii Content-transfer-encoding: quoted-printable
Here=20 in our clinic the Linear Service Tech is reasonable = for morning=20 checkout. The therapist arrive a half hour prior to first patient to = perform QA=20 tasks.  We are a small clinic with two Clinacs and a Ximatron. = Arriving=20 early allows for going home earlier but just in case of any problems I = am on=20 call until treatment day is complete.  And yes, you typical have to = return=20 for maintenance after hours or weekends.  I know of larger clinics = which=20 have therapist or junior physicist responsible for morning checkout but = at=20 least one Service guy is on site.

__________________________________________
Greg=20 MacKinnon, C.E.T.
Linear Accelerator Service Technologist
Cape = Breton=20 Cancer Centre
1482 George Street
Sydney, Nova Scotia, = Canada
B1P=20 1P3
tel:  (902) 567-8076
fax: (902) 567-8075
email:=20 mackinnongreg@cbdha.nshealth.ca

 
 
 -----Original=20 Message-----
From: owner-linac-eng@plato.aristotle.net=20 [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of=20 PPATNAUDE2@aol.com
Sent: Friday, March 05, 2004 7:53=20 PM
To: linac-eng@plato.aristotle.net
Subject: = morning=20 warm-up
I like to get more info on morning = warm-ups who=20 is should be doing them. Any thing group has I could use = thanks.=20
--Boundary_(ID_rp9dSzb2G48/G9SFounWtA)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUB002LNGUZXB@hubbard.azu.nl>; Tue, 9 Mar 2004 17:09:01 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004030917084910102 ; Tue, 09 Mar 2004 17:08:49 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id RAA20388; Tue, 09 Mar 2004 17:10:38 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma020126; Tue, 09 Mar 2004 17:09:39 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id IAA28114 for linac-eng-list; Tue, 09 Mar 2004 08:02:40 -0600 (CST) Received: from titan.lhsc.on.ca (titan.lhsc.on.ca [142.158.2.20]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id IAA28107 for ; Tue, 09 Mar 2004 08:02:39 -0600 (CST) Received: from mail.lrcc.on.ca (mail.lrcc.on.ca [142.158.120.242]) by titan.lhsc.on.ca (8.11.7p1+Sun/8.11.7) with SMTP id i29E28U01271 for ; Tue, 09 Mar 2004 09:02:08 -0500 (EST) Received: by mail.lrcc.on.ca(Lotus SMTP MTA v4.6.7 (934.1 12-30-1999)) id 85256E52.004D051A ; Tue, 09 Mar 2004 09:01:15 -0500 Date: Tue, 09 Mar 2004 09:01:15 -0500 From: Randy.McVittie@lrcc.on.ca Subject: Re: RE: 21 EX Carrousel bearing Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <85256E52.004D0515.00@mail.lrcc.on.ca> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Content-disposition: inline Precedence: bulk X-Lotus-FromDomain: LRCC X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 09 Mar 2004 09:01:15 -0500 From: Randy.McVittie@lrcc.on.ca Subject: Re: RE: 21 EX Carrousel bearing Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Content-disposition: inline X-Lotus-FromDomain: LRCC X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f We try to lubricate the bearing annually on our machines. The Carrousel should turn freely by hand **ONCE YOU UNLOCK THE CARROUSEL LOCKING PIN**. If it doesn't it is definitely time to lubricate. If you cannot move the carrousel by hand, don't panic. Try a couple of drops of TRI-FLOW and let it wick in then wiggle the carrousel by hand I was really amazed how quickly ours freed itself up with a bit of lube. The Carrousel motor is driven by one channel of one the PWM drive boards (A4) in the Aux Electronics. There is a 0.1 ohm resistor that you can monitor the drive current to the motor, the more friction that the motor has to work against the higher the current is going to be. Measure the voltage drop across this resistor as the carrousel is going from port to port on pins XA4-11C AND XA4-14C You will see the signal go to maybe as high as 90mV peak (damn those inductive spikes) and when it runs for a long time between two ports you will see the shunt voltage down around 30mV to 40mV. I am thinking that this measurement would be a good indicator on when to lubricate. Too much lubrication is not a good thing. PS To Dave Horsman: Thanks for posting that very thorough procedure on lubrication. Randy McVittie London Health Science Centre / London Regional Cancer Centre London, Ontario Canada  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUB0031YH7PRX@hubbard.azu.nl>; Tue, 9 Mar 2004 17:16:38 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004030917163631287 ; Tue, 09 Mar 2004 17:16:36 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id RAA22060; Tue, 09 Mar 2004 17:18:25 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma021939; Tue, 09 Mar 2004 17:17:52 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id IAA28364 for linac-eng-list; Tue, 09 Mar 2004 08:12:34 -0600 (CST) Received: from titan.lhsc.on.ca (titan.lhsc.on.ca [142.158.2.20]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id IAA28360 for ; Tue, 09 Mar 2004 08:12:32 -0600 (CST) Received: from mail.lrcc.on.ca (mail.lrcc.on.ca [142.158.120.242]) by titan.lhsc.on.ca (8.11.7p1+Sun/8.11.7) with SMTP id i29EC1U07369 for ; Tue, 09 Mar 2004 09:12:02 -0500 (EST) Received: by mail.lrcc.on.ca(Lotus SMTP MTA v4.6.7 (934.1 12-30-1999)) id 85256E52.004DEC9A ; Tue, 09 Mar 2004 09:11:08 -0500 Date: Tue, 09 Mar 2004 09:11:03 -0500 From: Randy.McVittie@lrcc.on.ca Subject: Digital Gun Deck Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <85256E52.004DEAC8.00@mail.lrcc.on.ca> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Content-disposition: inline Precedence: bulk X-Lotus-FromDomain: LRCC X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 09 Mar 2004 09:11:03 -0500 From: Randy.McVittie@lrcc.on.ca Subject: Digital Gun Deck Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Content-disposition: inline X-Lotus-FromDomain: LRCC X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hello List: I was wondering if anyone else out there has seen there gun deck behave this way. Go to the Cold deck side and put the controller service switch in the Monitor position then use increment/decrement switch to monitor GUN PWM Switch the Hot Deck Off and then Switch it back on I have one machine that "steps" the PWM level up t=0 to 8 seconds PWM = 17% 8 to 16 seconds PWM = 34% 16 to 21 seconds PWM = 51% 21 seconds on PWM = 69% I have checked two other machines and the PWM comes on right away to 69% I have a few more machines to check and I didn't have time to swap out the gun controller, I just never noticed it before. Randy McVittie London Health Science Centre / London Regional Cancer Centre London, Ontario Canada  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUB0046XIFDXY@hubbard.azu.nl>; Tue, 9 Mar 2004 17:42:51 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004030917424813693 ; Tue, 09 Mar 2004 17:42:48 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id RAA26478; Tue, 09 Mar 2004 17:44:37 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma026434; Tue, 09 Mar 2004 17:44:18 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id IAA29452 for linac-eng-list; Tue, 09 Mar 2004 08:43:42 -0600 (CST) Received: from imo-m15.mx.aol.com (imo-m15.mx.aol.com [64.12.138.205]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id IAA29448 for ; Tue, 09 Mar 2004 08:43:41 -0600 (CST) Received: from BMic644@aol.com by imo-m15.mx.aol.com (mail_out_v37.4.) id y.1ee.1b01190f (15900); Tue, 09 Mar 2004 09:43:04 -0500 (EST) Received: from aol.com (mow-m06.webmail.aol.com [64.12.184.134]) by air-id09.mx.aol.com (v98.11) with ESMTP id MAILINID93-3e1c404dd7f82cb; Tue, 09 Mar 2004 09:43:04 -0500 Date: Tue, 09 Mar 2004 09:43:04 -0500 From: BMic644@aol.com Subject: Re: still trying for more info on warm-up Sender: owner-linac-eng@plato.aristotle.net To: PPATNAUDE2@aol.com, linac-eng@plato.aristotle.net Cc: jerry.pollard@bhs.org Message-id: <52C493BA.43AB6C1C.00149F71@aol.com> MIME-version: 1.0 X-Mailer: Atlas Mailer 2.0 Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 8bit Precedence: bulk X-AOL-IP: 63.147.236.10 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 09 Mar 2004 09:43:04 -0500 From: BMic644@aol.com Subject: Re: still trying for more info on warm-up Sender: owner-linac-eng@plato.aristotle.net To: PPATNAUDE2@aol.com, linac-eng@plato.aristotle.net Cc: jerry.pollard@bhs.org X-AOL-IP: 63.147.236.10 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f At our facilities, the Therapists do the morning warm up and QA. Of course we, the service engineers, are on call if anything happens with machine start up. We also work all the late hours. Barry Michael SBHCS/Liv Tech Livingston, NJ  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUB00763KRT28@hubbard.azu.nl>; Tue, 9 Mar 2004 18:33:32 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004030918332813541 ; Tue, 09 Mar 2004 18:33:28 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA03386; Tue, 09 Mar 2004 18:35:17 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xmad03342; Tue, 09 Mar 2004 18:34:45 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id JAA01875 for linac-eng-list; Tue, 09 Mar 2004 09:31:50 -0600 (CST) Received: from mail20.nhs.uk (mail20.nhs.uk [62.6.139.212]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id JAA01871 for ; Tue, 09 Mar 2004 09:31:48 -0600 (CST) Received: from [10.191.254.3] (helo=relayint2.nhs.uk) by mail20.nhs.uk with esmtp (MTC MTA) id 1B0jCQ-0001w0-0g for linac-eng@plato.aristotle.net; Tue, 09 Mar 2004 15:31:18 +0000 Received: from relay.nhs.uk (194.62.42.141) by relayint2.nhs.uk (Syntegra-I2 7.0.008) id 4039DF710040D25C for linac-eng@plato.aristotle.net; Tue, 09 Mar 2004 15:31:17 +0000 Received: from stms-004.relay.nhs.uk (194.101.28.2) by relay.nhs.uk (Syntegra-1 7.0.008) (authenticated as smtp_stees_nhs_uk@es2002.nhs.uk) id 404DD4AD0000BC2B; Tue, 09 Mar 2004 15:31:18 +0000 Received: by STMS-004 with Internet Mail Service (5.5.2653.19) id ; Tue, 09 Mar 2004 15:36:32 +0000 Date: Tue, 09 Mar 2004 15:30:26 +0000 From: "Maggiorini Marc (RTR) South Tees NHS Trust" Subject: RE: still trying for more info on warm-up Sender: owner-linac-eng@plato.aristotle.net To: "'PPATNAUDE2@aol.com'" , linac-eng@plato.aristotle.net Cc: jerry.pollard@bhs.org Message-id: <1AECD0E8E443514FA0FE4E618F630F3E551BF3@stms-5> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_My17afOc6UMnMPUCKtrJqA)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 09 Mar 2004 15:30:26 +0000 From: "Maggiorini Marc (RTR) South Tees NHS Trust" Subject: RE: still trying for more info on warm-up Sender: owner-linac-eng@plato.aristotle.net To: "'PPATNAUDE2@aol.com'" , linac-eng@plato.aristotle.net Cc: jerry.pollard@bhs.org X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_My17afOc6UMnMPUCKtrJqA) Content-type: text/plain; charset=iso-8859-1 Hello Peter. Here at James Cook University Hospital in the UK we allow our therapists to run warm up on our accelerators. Previously technologists would run the equipment up,but therapists wanted to have more control as to when the equipment was available early mornings weekends etc. Due to the fact that these days most equipment is fairly reliable and in our case we don't have too many problems,If there is a problem they wait until a technologist is on site or contact one by phone. But you ask who does run ups, I would say anyone who is deemed competent, typically technologists, physicists and finally therapists, ( in that order). Marc Maggiorini Chief Technologist The James Cook University Hospital Middlesbrough UK -----Original Message----- From: PPATNAUDE2@aol.com [mailto:PPATNAUDE2@aol.com] Sent: 09 March 2004 12:03 To: linac-eng@plato.aristotle.net Cc: jerry.pollard@bhs.org Subject: still trying for more info on warm-up still hoping to get more input on who perform morning warm-ups at other site i have herd from a few people i no more read our letter please let me no thanks. peter.patnaude@bhs.org --Boundary_(ID_My17afOc6UMnMPUCKtrJqA) Content-type: text/html; charset=iso-8859-1
Hello Peter.
 
 
Here at James Cook University Hospital in the UK we allow our therapists to run warm up on our accelerators.
Previously technologists would run the equipment up,but therapists wanted to have  more control as to when the equipment was available early mornings weekends etc.
Due to the fact that these days most equipment is fairly reliable and in our case we don't have too many problems,If there is a problem they wait until a technologist is on site or contact one by phone.
 
But you ask who does run ups, I would say anyone who is deemed competent, typically technologists, physicists and finally therapists, ( in that order).
 
Marc Maggiorini 
Chief Technologist
The James Cook University Hospital
Middlesbrough
UK
-----Original Message-----
From: PPATNAUDE2@aol.com [mailto:PPATNAUDE2@aol.com]
Sent: 09 March 2004 12:03
To: linac-eng@plato.aristotle.net
Cc: jerry.pollard@bhs.org
Subject: still trying for more info on warm-up

still hoping to get more input on who perform morning warm-ups at other site i have herd from a few people i no more read our letter please let me no thanks.
peter.patnaude@bhs.org
--Boundary_(ID_My17afOc6UMnMPUCKtrJqA)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUB0086ON9KZB@hubbard.azu.nl>; Tue, 9 Mar 2004 19:27:22 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004030919272015464 ; Tue, 09 Mar 2004 19:27:20 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA09560; Tue, 09 Mar 2004 19:29:08 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma009536; Tue, 09 Mar 2004 19:28:56 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id KAA03051 for linac-eng-list; Tue, 09 Mar 2004 10:23:49 -0600 (CST) Received: from mail20.nhs.uk (mail20.nhs.uk [62.6.139.212]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id KAA03047 for ; Tue, 09 Mar 2004 10:23:47 -0600 (CST) Received: from [10.191.254.3] (helo=relayint1.nhs.uk) by mail20.nhs.uk with esmtp (MTC MTA) id 1B0k0i-0002oB-EW for linac-eng@plato.aristotle.net; Tue, 09 Mar 2004 16:23:16 +0000 Received: from relay.nhs.uk (194.62.42.143) by relayint1.nhs.uk (Syntegra-I1 7.0.008) id 4039DF37003A91A5 for linac-eng@plato.aristotle.net; Tue, 09 Mar 2004 16:23:16 +0000 Received: from beijing.relay.grampian.scot.nhs.uk (10.251.30.7) by relay.nhs.uk (Syntegra-3 7.0.008) (authenticated as relay_grampian_scot_nhs_uk@es2002.nhs.uk) id 404DD56800012A78; Tue, 09 Mar 2004 16:23:16 +0000 Received: from arh-mail2.arh.grampian.scot.nhs.uk ([9.16.60.28]) by beijing.relay.grampian.scot.nhs.uk with Microsoft SMTPSVC(5.0.2195.6713) ; Tue, 09 Mar 2004 16:15:54 +0000 Received: by arh-mail2.arh.grampian.scot.nhs.uk with Internet Mail Service (5.5.2657.72) id ; Tue, 09 Mar 2004 16:14:58 +0000 Date: Tue, 09 Mar 2004 16:19:09 +0000 From: David.Smith@arh.grampian.scot.nhs.uk Subject: RE: still trying for more info on warm-up [Scanned By SOPHOS Anti -Virus] Sender: owner-linac-eng@plato.aristotle.net To: PPATNAUDE2@aol.com Cc: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; CHARSET=US-ASCII Precedence: bulk X-OriginalArrivalTime: 09 Mar 2004 16:15:54.0296 (UTC) FILETIME=[CC1D8380:01C405F1] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 09 Mar 2004 16:19:09 +0000 From: David.Smith@arh.grampian.scot.nhs.uk Subject: RE: still trying for more info on warm-up [Scanned By SOPHOS Anti -Virus] Sender: owner-linac-eng@plato.aristotle.net To: PPATNAUDE2@aol.com Cc: linac-eng@plato.aristotle.net X-OriginalArrivalTime: 09 Mar 2004 16:15:54.0296 (UTC) FILETIME=[CC1D8380:01C405F1] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Peter, Technical and physics staff do our morning run-ups. However we use our morning 80 minute slot for each high energy clinac to perform weekly QA, Dosimetry, maintenance as well as run-ups. We have no other planned machine time other than for services. Our QA system is a 12 week cycle which we perform between 3 monthly services. Dave > -----Original Message----- > From: PPATNAUDE2@aol.com [SMTP:PPATNAUDE2@aol.com] > Sent: Tuesday, March 09, 2004 12:03 PM > To: linac-eng@plato.aristotle.net > Cc: jerry.pollard@bhs.org > Subject: still trying for more info on warm-up [Scanned By SOPHOS > Anti-Virus] > > still hoping to get more input on who perform morning warm-ups at other > site i have herd from a few people i no more read our letter please let me > no thanks. > peter.patnaude@bhs.org  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUB00AHAPU79R@hubbard.azu.nl>; Tue, 9 Mar 2004 20:22:57 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004030920225411174 ; Tue, 09 Mar 2004 20:22:54 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id UAA16062; Tue, 09 Mar 2004 20:24:43 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma015988; Tue, 09 Mar 2004 20:24:27 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id LAA04037 for linac-eng-list; Tue, 09 Mar 2004 11:24:18 -0600 (CST) Received: from nasvir01.nas.medcity.net (mail.nas.medcity.net [199.91.33.30]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id LAA04032 for ; Tue, 09 Mar 2004 11:24:16 -0600 (CST) Received: from 159.139.152.113 by nasvir01.nas.medcity.net (InterScan E-Mail VirusWall NT); Tue, 09 Mar 2004 10:25:49 -0600 Received: by corpexcon02.hca.corpad.net with Internet Mail Service (5.5.2657.72) id ; Tue, 09 Mar 2004 10:25:50 -0600 Date: Tue, 09 Mar 2004 10:25:46 -0600 From: Tirabassi Michael Subject: No output, then output, then back to no output Sender: owner-linac-eng@plato.aristotle.net To: "Linac list (E-mail)" Message-id: <39A90AC123CB9D428821E2BC273E73CD01F866B8@ftwex03.hca.corpad.net> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 09 Mar 2004 10:25:46 -0600 From: Tirabassi Michael Subject: No output, then output, then back to no output Sender: owner-linac-eng@plato.aristotle.net To: "Linac list (E-mail)" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Good Morning! I would like to get anyone's thoughts on the following. Machine is an CL1800 ser# 46. If you have all signals present i.e. gun high voltage, gun pulse, kly I, Kly V, HVPS(DEQ), Load power2, forward/reflected power, RF Driver, PFN, AFC and solenoids,BMAG supplies ok and all parameters seem to be ok for all energies and still you have no output, then you have output and wait and then no output what am I missing. From no output to output noticed DEQ and Kly waveforms amplitude increase slightly. Are we talking flaky Deq tube or K1, is 10 year klystron giving fits.J4 voltage = 235.4 vac. Both thyratrons less than 1 year old. Maybe need to re-saturate kly. Appears temp related. System temp ok. After playing with tuning for a bit machine now running fine although I don't think what I did helped anything. Have a 15 min time delay for fils. In a response to a previous post I warm up & do QA checks every morning and then schedule to do whatever whenever. Thanks for your thoughts. Mike T. RCC  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUB00CPFT1AZI@hubbard.azu.nl>; Tue, 9 Mar 2004 21:32:01 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004030921315716142 ; Tue, 09 Mar 2004 21:31:57 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id VAA23558; Tue, 09 Mar 2004 21:33:45 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma023481; Tue, 09 Mar 2004 21:33:32 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id MAA05308 for linac-eng-list; Tue, 09 Mar 2004 12:22:49 -0600 (CST) Received: from titan.lhsc.on.ca (titan.lhsc.on.ca [142.158.2.20]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id MAA05303 for ; Tue, 09 Mar 2004 12:22:47 -0600 (CST) Received: from mail.lrcc.on.ca (mail.lrcc.on.ca [142.158.120.242]) by titan.lhsc.on.ca (8.11.7p1+Sun/8.11.7) with SMTP id i29IMFU29383; Tue, 09 Mar 2004 13:22:15 -0500 (EST) Received: by mail.lrcc.on.ca(Lotus SMTP MTA v4.6.7 (934.1 12-30-1999)) id 85256E52.0064D5EA ; Tue, 09 Mar 2004 13:21:23 -0500 Date: Tue, 09 Mar 2004 13:21:18 -0500 From: Randy.McVittie@lrcc.on.ca Subject: Re: No output, then output, then back to no output Sender: owner-linac-eng@plato.aristotle.net To: Tirabassi Michael Cc: "Linac list (E-mail)" Message-id: <85256E52.0064D462.00@mail.lrcc.on.ca> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Content-disposition: inline Precedence: bulk X-Lotus-FromDomain: LRCC X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 09 Mar 2004 13:21:18 -0500 From: Randy.McVittie@lrcc.on.ca Subject: Re: No output, then output, then back to no output Sender: owner-linac-eng@plato.aristotle.net To: Tirabassi Michael Cc: "Linac list (E-mail)" Content-disposition: inline X-Lotus-FromDomain: LRCC X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f I thought that a problem with the klystron showed up as a problem running your higher energy beams like 18x and 20e, lower energy beams like 6e would be ok. But 10 years on a klystron is pretty good I think, but it also depends on how many high voltage hours you have put on during the last 10 years. Randy  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUC00L182QS8K@hubbard.azu.nl>; Wed, 10 Mar 2004 01:01:41 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004031001013914103 ; Wed, 10 Mar 2004 01:01:39 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id BAA14371; Wed, 10 Mar 2004 01:03:28 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma014366; Wed, 10 Mar 2004 01:03:27 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id QAA11790 for linac-eng-list; Tue, 09 Mar 2004 16:01:24 -0600 (CST) Received: from imo-d03.mx.aol.com (imo-d03.mx.aol.com [205.188.157.35]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id QAA11786 for ; Tue, 09 Mar 2004 16:01:23 -0600 (CST) Received: from SMcna39074@aol.com by imo-d03.mx.aol.com (mail_out_v37.4.) id v.1ab.2150b041 (15900); Tue, 09 Mar 2004 17:00:48 -0500 (EST) Received: from aol.com (mow-d16.webmail.aol.com [205.188.139.132]) by air-id09.mx.aol.com (v98.11) with ESMTP id MAILINID93-3e1c404e3e90330; Tue, 09 Mar 2004 17:00:48 -0500 Date: Tue, 09 Mar 2004 17:00:48 -0500 From: SMcna39074@aol.com Subject: Re: No output, then output, then back to no output Sender: owner-linac-eng@plato.aristotle.net To: Michael.Tirabassi@HCAHealthcare.com Cc: linac-eng@plato.aristotle.net Message-id: <3300B316.72416E48.0C0A0915@aol.com> MIME-version: 1.0 X-Mailer: Atlas Mailer 2.0 Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 8bit Precedence: bulk X-AOL-IP: 207.154.79.102 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 09 Mar 2004 17:00:48 -0500 From: SMcna39074@aol.com Subject: Re: No output, then output, then back to no output Sender: owner-linac-eng@plato.aristotle.net To: Michael.Tirabassi@HCAHealthcare.com Cc: linac-eng@plato.aristotle.net X-AOL-IP: 207.154.79.102 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Had a similar problem on a 600c. Turned out to be the main thyratron--filaments coming on and off as they thermally cycled due to internal cold joint/fracture on connections. Visually found, just watched the filament go cold to hot to cold. Stan McNally Cancer Center of Santa Barbara  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUC00L2P2U58K@hubbard.azu.nl>; Wed, 10 Mar 2004 01:03:42 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004031001034006620 ; Wed, 10 Mar 2004 01:03:40 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id BAA14484; Wed, 10 Mar 2004 01:05:29 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma014466; Wed, 10 Mar 2004 01:05:11 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id PAA11576 for linac-eng-list; Tue, 09 Mar 2004 15:49:10 -0600 (CST) Received: from gwia.slrmc.org (gwia.slrmc.org [199.99.194.3]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id PAA11572 for ; Tue, 09 Mar 2004 15:49:09 -0600 (CST) Received: from SL_DOM-MTA by gwia.slrmc.org with Novell_GroupWise; Tue, 09 Mar 2004 14:48:38 -0700 Date: Tue, 09 Mar 2004 14:48:32 -0700 From: Randy Niccolls Subject: Re: morning warm-up Sender: owner-linac-eng@plato.aristotle.net To: PPATNAUDE2@aol.com, linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.5.1 Content-type: text/plain; charset=US-ASCII Content-disposition: inline Content-transfer-encoding: 7bit Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 09 Mar 2004 14:48:32 -0700 From: Randy Niccolls Subject: Re: morning warm-up Sender: owner-linac-eng@plato.aristotle.net To: PPATNAUDE2@aol.com, linac-eng@plato.aristotle.net Content-disposition: inline X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Our Therapist do the morning warmups. We have 4 sites with 5 accelerators and just two of us Linear Accelerator Engineers. It would be very difficult of us the Engineers to do the morning warmups and checkouts. We also work late nites and some weekend work, so it works out for us. Randy Niccolls Linear accelerator Engineer Mountain States Tumor Institute Boise, Idaho >>> 03/05/04 04:52PM >>> I like to get more info on morning warm-ups who is should be doing them. Any thing group has I could use thanks.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUC006KDD00EI@hubbard.azu.nl>; Wed, 10 Mar 2004 04:43:13 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004031004431124995 ; Wed, 10 Mar 2004 04:43:11 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id EAA28357; Wed, 10 Mar 2004 04:45:00 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma028347; Wed, 10 Mar 2004 04:44:46 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id TAA16049 for linac-eng-list; Tue, 09 Mar 2004 19:55:42 -0600 (CST) Received: from imo-m14.mx.aol.com (imo-m14.mx.aol.com [64.12.138.204]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id TAA16045 for ; Tue, 09 Mar 2004 19:55:41 -0600 (CST) Received: from PPATNAUDE2@aol.com by imo-m14.mx.aol.com (mail_out_v37.4.) id y.77.23ce622a (1320); Tue, 09 Mar 2004 20:55:05 -0500 (EST) Date: Tue, 09 Mar 2004 20:55:04 -0500 (EST) From: PPATNAUDE2@aol.com Subject: thanks to all Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Cc: gerry.pollard@bhs.org Message-id: <77.23ce622a.2d7fcf78@aol.com> MIME-version: 1.0 X-Mailer: 7.0 for Windows sub 10709 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_gf4LH3cAa+/JPVSazDNDEw)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 09 Mar 2004 20:55:04 -0500 (EST) From: PPATNAUDE2@aol.com Subject: thanks to all Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Cc: gerry.pollard@bhs.org X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f --Boundary_(ID_gf4LH3cAa+/JPVSazDNDEw) Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7bit I like to thank all for the info sent in on warm-up. What I see is that more tech do warm-up then engineer which I new from the start it only make sense. Engineer stay at night to make repair and when needed on weekend there has to be a limit to hour any one can work. Anyway thanks for all the replies --Boundary_(ID_gf4LH3cAa+/JPVSazDNDEw) Content-type: text/html; charset=US-ASCII Content-transfer-encoding: quoted-printable I like to thank all for=20= the info sent in on warm-up. What I see is that more tech do warm-up then en= gineer which I new from the start it only make sense. Engineer stay at night= to make repair and when needed on weekend there has to be a limit to hour a= ny one can work. Anyway thanks for all the replies --Boundary_(ID_gf4LH3cAa+/JPVSazDNDEw)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUC0086HG2BLK@hubbard.azu.nl>; Wed, 10 Mar 2004 05:49:24 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004031005492221398 ; Wed, 10 Mar 2004 05:49:22 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id FAA02191; Wed, 10 Mar 2004 05:51:11 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma002188; Wed, 10 Mar 2004 05:51:04 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id VAA17698 for linac-eng-list; Tue, 09 Mar 2004 21:00:59 -0600 (CST) Received: from adl0133.systems.sa.gov.au (adl0133.systems.sa.gov.au [143.216.236.20]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id VAA17694 for ; Tue, 09 Mar 2004 21:00:57 -0600 (CST) Received: from adl0133.systems.sa.gov.au (localhost [127.0.0.1]) by adl0133.systems.sa.gov.au OUTGOING (8.12.10/8.12.7) with ESMTP id i2A30IxF014587 for ; Wed, 10 Mar 2004 13:30:18 +1030 (CST) Received: from rahsun153.rah.sa.gov.au (mailhub.rah.sa.gov.au [10.19.241.188]) by adl0133.systems.sa.gov.au INCOMING (8.12.10/8.12.7) with ESMTP id i2A30G0w014568 for ; Wed, 10 Mar 2004 13:30:17 +1030 (CST) Received: from mail.rah.sa.gov.au (MERCURY-2 [10.19.241.91]) by rahsun153.rah.sa.gov.au (8.12.9/8.12.8) with ESMTP id i2A30DjP027660 for ; Wed, 10 Mar 2004 13:30:15 +1030 (CST) Received: from Spooler by mail.rah.sa.gov.au (Mercury/32 v4.01a) ID MO000A23; Wed, 10 Mar 2004 13:30:14 +1030 Received: from spooler by mail.rah.sa.gov.au (Mercury/32 v4.01a); Wed, 10 Mar 2004 13:30:02 +1030 Date: Wed, 10 Mar 2004 13:29:16 +1030 From: Andrew Frolov Subject: Salary survey - Australia Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <200403100300.i2A30DjP027660@rahsun153.rah.sa.gov.au> Organization: Royal Adelaide Hospital MIME-version: 1.0 X-Mailer: Pegasus Mail for Win32 (v3.12a) Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 10 Mar 2004 13:29:16 +1030 From: Andrew Frolov Subject: Salary survey - Australia Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Organization: Royal Adelaide Hospital X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hi everyone! In order to find ways to improve pay conditions of my staff I am collecting information about salary levels in biomedical and particularly radiation engineering across Australia. Anybody who is willing to disclose conditions of their employment please e-mail me. I will appreciate if you not only advise the level of your pay but also indicate on whether you employed by a hospital (public/private) or a vendor. I guarantee that all received information will be kept confidential, will not be published in any way and will be used only for personal evaluation. Regards, Andrew Frolov Manager, RE Royal Adelaide Hospital Tel: 61 8 8222 5674 Fax: 61 8 8222 5937 email afrolov@mail.rah.sa.gov.au  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUD00JCD7EL80@hubbard.azu.nl>; Wed, 10 Mar 2004 15:39:59 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004031015395610047 ; Wed, 10 Mar 2004 15:39:56 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id PAA21446; Wed, 10 Mar 2004 15:41:45 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma021376; Wed, 10 Mar 2004 15:41:23 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id GAA26342 for linac-eng-list; Wed, 10 Mar 2004 06:54:32 -0600 (CST) Received: from hotmail.com (bay3-dav18.bay3.hotmail.com [65.54.168.122]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id GAA26334 for ; Wed, 10 Mar 2004 06:54:31 -0600 (CST) Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Wed, 10 Mar 2004 04:54:00 -0800 Received: from 206.215.101.101 by bay3-dav18.bay3.hotmail.com with DAV; Wed, 10 Mar 2004 12:53:59 +0000 Date: Wed, 10 Mar 2004 07:53:59 -0500 From: Timothy Forsgren Subject: Re: Elekta info. Sender: owner-linac-eng@plato.aristotle.net X-Sender: tforsgren@msn.com To: "Falcinelli, Marc A" , linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: MSN Explorer 7.02.0011.2700 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_NWEQtSR+V2cvnvGGgoUFrA)" Precedence: bulk X-Originating-IP: [206.215.101.101] X-Originating-Email: [tforsgren@msn.com] X-OriginalArrivalTime: 10 Mar 2004 12:54:00.0196 (UTC) FILETIME=[C1F64C40:01C4069E] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 10 Mar 2004 07:53:59 -0500 From: Timothy Forsgren Subject: Re: Elekta info. Sender: owner-linac-eng@plato.aristotle.net X-Sender: tforsgren@msn.com To: "Falcinelli, Marc A" , linac-eng@plato.aristotle.net X-Originating-IP: [206.215.101.101] X-Originating-Email: [tforsgren@msn.com] X-OriginalArrivalTime: 10 Mar 2004 12:54:00.0196 (UTC) FILETIME=[C1F64C40:01C4069E] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f --Boundary_(ID_NWEQtSR+V2cvnvGGgoUFrA) Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: quoted-printable Radparts has an extensive inventory of Elekta parts ----- Original Message ----- From: Falcinelli, Marc A Sent: Tuesday, March 09, 2004 9:39 AM To: linac-eng@plato.aristotle.net Subject: Elekta info. Fellow service engineers, I have a few questions to present for discussion: 1. Are there alternate part sources available in the USA for the Ele= kta linear accelerators? =20 2. For those of you who have sites with both a newer Elekta and Vari= an high energy C-series machine, I am looking for beam matching informati= on. How close can the two machines be beam matched? Are there any specifi= cations you or your physics staff outlined regarding beam matching when y= ou purchased either brand to add to your department? 3. Also I would be interested in any other head to head performance = information between the Elekta and Varian you may wish to contribute. Thank you, Marc --Boundary_(ID_NWEQtSR+V2cvnvGGgoUFrA) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: quoted-printable
Radparts has a= n extensive inventory of Elekta parts
 
----- Original Message -----
From: Falcinelli, Marc A
<= DIV style=3D"FONT: 10pt Arial">Sent: Tuesday, March 09, 2004 9:39 = AM
To: linac-eng@plato.arist= otle.net
Subject: Elekta inf= o.
 

Fellow service e= ngineers,

 I have a few question= s to present for discussion:

1.      Are there= alternate p= art sources available in the USA for the Elekta linear accel= erators?

2.      For those of you who = have sites with both a newer Elekta and Varian high energy C-series machine, I am looking for beam matching information. How close c= an the two machines be beam matched? Are there any specifications you or = your physics staff outlined regarding beam matching when you purchased ei= ther brand to add to your department?

3.      Also I would b= e interested in any other head to head performance information between the Elekta and Varian you may wish to contribute.

Tha= nk you,

Marc

--Boundary_(ID_NWEQtSR+V2cvnvGGgoUFrA)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUD0003RAJI5R@hubbard.azu.nl>; Wed, 10 Mar 2004 16:47:47 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004031016474117382 ; Wed, 10 Mar 2004 16:47:41 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id QAA06082; Wed, 10 Mar 2004 16:49:30 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xmac06007; Wed, 10 Mar 2004 16:49:05 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id HAA27614 for linac-eng-list; Wed, 10 Mar 2004 07:48:10 -0600 (CST) Received: from ihis.org (peihealth.ihis.org [142.176.18.65]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id HAA27610 for ; Wed, 10 Mar 2004 07:48:07 -0600 (CST) Received: by peihealth.ihis.org id <115630>; Wed, 10 Mar 2004 09:05:24 -0400 Date: Wed, 10 Mar 2004 08:56:46 -0400 From: Rick Smith Subject: Cameras in treatment rooms Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <04Mar10.090524ast.115630@peihealth.ihis.org> MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 5.5.7.1 Content-type: text/plain; charset=US-ASCII Content-disposition: inline Content-transfer-encoding: 8bit Precedence: bulk X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id HAA27611 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 10 Mar 2004 08:56:46 -0400 From: Rick Smith Subject: Cameras in treatment rooms Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Content-disposition: inline X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id HAA27611 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Has anyone ever gone to the trouble of replacing the CCD chip in their video cameras after they suffer pixel damage. I have been trying to locate a source for the ccd chip in a Pelco camera and can't find a supplier. The chip is a Sony ICX208AK . Rick Smith PEI Cancer Centre  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUD0015QBY8NE@hubbard.azu.nl>; Wed, 10 Mar 2004 17:18:09 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004031017180702564 ; Wed, 10 Mar 2004 17:18:07 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id RAA12771; Wed, 10 Mar 2004 17:19:56 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma012570; Wed, 10 Mar 2004 17:19:02 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id IAA28987 for linac-eng-list; Wed, 10 Mar 2004 08:29:00 -0600 (CST) Received: from PHSEXCHICO.MGH.HARVARD.EDU (phsexchico.mgh.harvard.edu [132.183.126.50]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id IAA28983 for ; Wed, 10 Mar 2004 08:28:59 -0600 (CST) Received: by phsexchico.mgh.harvard.edu with Internet Mail Service (5.5.2657.72) id ; Wed, 10 Mar 2004 09:28:28 -0500 Date: Wed, 10 Mar 2004 09:28:26 -0500 From: "Maddox, Buford J" Subject: RE: No output, then output, then back to no output Sender: owner-linac-eng@plato.aristotle.net To: 'Tirabassi Michael' , "Linac list (E-mail)" Message-id: <36298D09ED1AD311B4DC0008C7F4D4E1114663A3@phsexch6.partners.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 10 Mar 2004 09:28:26 -0500 From: "Maddox, Buford J" Subject: RE: No output, then output, then back to no output Sender: owner-linac-eng@plato.aristotle.net To: 'Tirabassi Michael' , "Linac list (E-mail)" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f If an 1800 has step start relays, I would check those. If the problem is there, it usually shows up as a variation in charging current. Look at PSI on a long time scale, many pulses, see some lower on the phase with a bad relay. One possibility of many. Jerry -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Tirabassi Michael Sent: Tuesday, March 09, 2004 11:26 AM To: Linac list (E-mail) Subject: No output, then output, then back to no output Good Morning! I would like to get anyone's thoughts on the following. Machine is an CL1800 ser# 46. If you have all signals present i.e. gun high voltage, gun pulse, kly I, Kly V, HVPS(DEQ), Load power2, forward/reflected power, RF Driver, PFN, AFC and solenoids,BMAG supplies ok and all parameters seem to be ok for all energies and still you have no output, then you have output and wait and then no output what am I missing. From no output to output noticed DEQ and Kly waveforms amplitude increase slightly. Are we talking flaky Deq tube or K1, is 10 year klystron giving fits.J4 voltage = 235.4 vac. Both thyratrons less than 1 year old. Maybe need to re-saturate kly. Appears temp related. System temp ok. After playing with tuning for a bit machine now running fine although I don't think what I did helped anything. Have a 15 min time delay for fils. In a response to a previous post I warm up & do QA checks every morning and then schedule to do whatever whenever. Thanks for your thoughts. Mike T. RCC  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUD0015WBY8NT@hubbard.azu.nl>; Wed, 10 Mar 2004 17:18:09 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004031017180303666 ; Wed, 10 Mar 2004 17:18:03 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id RAA12740; Wed, 10 Mar 2004 17:19:52 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xmad12553; Wed, 10 Mar 2004 17:18:59 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id IAA28645 for linac-eng-list; Wed, 10 Mar 2004 08:18:56 -0600 (CST) Received: from PHSEXCHICI2.Partners.org (phsexchici2.partners.org [170.223.254.21]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id IAA28635 for ; Wed, 10 Mar 2004 08:18:53 -0600 (CST) Received: by phsexchici2.partners.org with Internet Mail Service (5.5.2657.72) id ; Wed, 10 Mar 2004 09:17:59 -0500 Date: Wed, 10 Mar 2004 09:17:57 -0500 From: "Maddox, Buford J" Subject: RE: Digital Gun Deck Sender: owner-linac-eng@plato.aristotle.net To: "'Randy.McVittie@lrcc.on.ca'" , linac-eng@plato.aristotle.net Message-id: <36298D09ED1AD311B4DC0008C7F4D4E1114663A0@phsexch6.partners.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 10 Mar 2004 09:17:57 -0500 From: "Maddox, Buford J" Subject: RE: Digital Gun Deck Sender: owner-linac-eng@plato.aristotle.net To: "'Randy.McVittie@lrcc.on.ca'" , linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f the PWM is the filament current % on time. The stepping you describe is an excellent way to bring up the filament in this case. Old machines had a low filament in standby, which was then switched to a higher level when turned on. A filament has much lower resistance when cold, leading to surges in current when turned on. Gradual start reduces this effect a lot. -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Randy.McVittie@lrcc.on.ca Sent: Tuesday, March 09, 2004 9:11 AM To: linac-eng@plato.aristotle.net Subject: Digital Gun Deck Hello List: I was wondering if anyone else out there has seen there gun deck behave this way. Go to the Cold deck side and put the controller service switch in the Monitor position then use increment/decrement switch to monitor GUN PWM Switch the Hot Deck Off and then Switch it back on I have one machine that "steps" the PWM level up t=0 to 8 seconds PWM = 17% 8 to 16 seconds PWM = 34% 16 to 21 seconds PWM = 51% 21 seconds on PWM = 69% I have checked two other machines and the PWM comes on right away to 69% I have a few more machines to check and I didn't have time to swap out the gun controller, I just never noticed it before. Randy McVittie London Health Science Centre / London Regional Cancer Centre London, Ontario Canada  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUD007QJJVHRZ@hubbard.azu.nl>; Wed, 10 Mar 2004 20:09:19 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004031020091606904 ; Wed, 10 Mar 2004 20:09:16 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id UAA06324; Wed, 10 Mar 2004 20:11:05 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xmaa06275; Wed, 10 Mar 2004 20:10:52 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id LAA02411 for linac-eng-list; Wed, 10 Mar 2004 11:11:06 -0600 (CST) Received: from mail21.nhs.uk (mail21.nhs.uk [62.6.139.215]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id LAA02404 for ; Wed, 10 Mar 2004 11:11:04 -0600 (CST) Received: from [10.191.254.3] (helo=relayint1.nhs.uk) by mail21.nhs.uk with esmtp (MTC MTA) id 1B16Gc-0001D5-Ng for linac-eng@plato.aristotle.net; Wed, 10 Mar 2004 16:09:10 +0000 Received: from relay.nhs.uk (194.62.42.144) by relayint1.nhs.uk (Syntegra-I1 7.0.008) id 4039DF37003F47B3 for linac-eng@plato.aristotle.net; Wed, 10 Mar 2004 16:09:10 +0000 Received: from beijing.relay.grampian.scot.nhs.uk (10.251.30.7) by relay.nhs.uk (Syntegra-4 7.0.008) (authenticated as relay_grampian_scot_nhs_uk@es2002.nhs.uk) id 404EE0C50004577C; Wed, 10 Mar 2004 16:09:10 +0000 Received: from arh-mail2.arh.grampian.scot.nhs.uk ([9.16.60.28]) by beijing.relay.grampian.scot.nhs.uk with Microsoft SMTPSVC(5.0.2195.6713) ; Wed, 10 Mar 2004 16:06:15 +0000 Received: by arh-mail2.arh.grampian.scot.nhs.uk with Internet Mail Service (5.5.2657.72) id ; Wed, 10 Mar 2004 16:05:18 +0000 Date: Wed, 10 Mar 2004 16:09:32 +0000 From: David.Smith@arh.grampian.scot.nhs.uk Subject: RE: Cameras in treatment rooms [Scanned By SOPHOS Anti-Virus] Sender: owner-linac-eng@plato.aristotle.net To: ersmith@ihis.org Cc: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; CHARSET=US-ASCII Precedence: bulk X-OriginalArrivalTime: 10 Mar 2004 16:06:15.0187 (UTC) FILETIME=[9D5A3E30:01C406B9] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 10 Mar 2004 16:09:32 +0000 From: David.Smith@arh.grampian.scot.nhs.uk Subject: RE: Cameras in treatment rooms [Scanned By SOPHOS Anti-Virus] Sender: owner-linac-eng@plato.aristotle.net To: ersmith@ihis.org Cc: linac-eng@plato.aristotle.net X-OriginalArrivalTime: 10 Mar 2004 16:06:15.0187 (UTC) FILETIME=[9D5A3E30:01C406B9] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Rick, I used to replace CCD chips regularly when I worked for an underwater camera firm in the late 80's. They were extemely static sensitive, I would imagine with modern day resolutions they would be even more so. It is the only time that I have knowingly blown up a device by not taking correct static preventative measures so beware. Sorry can't help with a supplier. On the subject of pixel damage, this appears to be a modern day problem, probably something to do with the closeness of the pixels to one another. Old CCD cameras with lower resolutions never experienced these radiation damage problems. Any one got any more thoughts on this pixel damage problem? Dave > -----Original Message----- > From: Rick Smith [SMTP:ersmith@ihis.org] > Sent: Wednesday, March 10, 2004 12:57 PM > To: linac-eng@plato.aristotle.net > Subject: Cameras in treatment rooms [Scanned By SOPHOS Anti-Virus] > > Has anyone ever gone to the trouble of replacing the CCD chip in their > video cameras after they suffer pixel damage. I have been trying to locate > a source for the ccd chip in a Pelco camera and can't find a supplier. The > chip is a Sony ICX208AK . > > Rick Smith > PEI Cancer Centre  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUD007MMK18VN@hubbard.azu.nl>; Wed, 10 Mar 2004 20:12:45 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004031020124317503 ; Wed, 10 Mar 2004 20:12:43 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id UAA06689; Wed, 10 Mar 2004 20:14:32 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma006676; Wed, 10 Mar 2004 20:14:13 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id LAA02443 for linac-eng-list; Wed, 10 Mar 2004 11:12:31 -0600 (CST) Received: from lycos.com (www3.mail.lycos.com [209.202.220.160]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id LAA02439 for ; Wed, 10 Mar 2004 11:12:30 -0600 (CST) Received: from Unknown/Local ([?.?.?.?]) by mailcity.com; Wed, 10 Mar 2004 17:11:43 +0000 Date: Wed, 10 Mar 2004 12:11:43 -0500 From: david hall Subject: RE: No output, then output, then back to no output Sender: owner-linac-eng@plato.aristotle.net To: 'Tirabassi Michael' , "Linac list (E-mail)" , "Maddox, Buford J" Reply-to: hall.david@lycos.com Message-id: Organization: Lycos Mail (http://www.mail.lycos.com:80) MIME-version: 1.0 X-Mailer: MailCity Service Content-type: text/plain; charset=us-ascii Content-language: en Content-transfer-encoding: 7bit Precedence: bulk X-Sent-Mail: off X-Sender-Ip: 67.127.101.245 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 *** EOOH *** Date: Wed, 10 Mar 2004 12:11:43 -0500 From: david hall Subject: RE: No output, then output, then back to no output Sender: owner-linac-eng@plato.aristotle.net To: 'Tirabassi Michael' , "Linac list (E-mail)" , "Maddox, Buford J" Reply-to: hall.david@lycos.com Organization: Lycos Mail (http://www.mail.lycos.com:80) Content-language: en X-Sent-Mail: off X-Sender-Ip: 67.127.101.245 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 Try boosting klystron fil to 256vac. Dave Hall -- --------- Original Message --------- DATE: Wed, 10 Mar 2004 09:28:26 From: "Maddox, Buford J" To: "'Tirabassi Michael'" ,"Linac list (E-mail)" Cc: >If an 1800 has step start relays, I would check those. If the problem is there, >it usually shows up as a variation in charging current. Look at PSI on a long >time scale, many pulses, see some lower on the phase with a bad relay. One >possibility of many. >Jerry > >-----Original Message----- >From: owner-linac-eng@plato.aristotle.net >[mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Tirabassi >Michael >Sent: Tuesday, March 09, 2004 11:26 AM >To: Linac list (E-mail) >Subject: No output, then output, then back to no output > > >Good Morning! > >I would like to get anyone's thoughts on the following. Machine is an CL1800 >ser# 46. > >If you have all signals present i.e. gun high voltage, gun pulse, kly I, Kly >V, HVPS(DEQ), Load power2, forward/reflected power, RF Driver, PFN, AFC and >solenoids,BMAG supplies ok and all parameters seem to be ok for all energies >and still you have no output, then you have output and wait and then no >output what am I missing. > >From no output to output noticed DEQ and Kly waveforms amplitude increase >slightly. Are we talking flaky Deq tube or K1, is 10 year klystron giving >fits.J4 voltage = 235.4 vac. Both thyratrons less than 1 year old. Maybe >need to re-saturate kly. Appears temp related. System temp ok. > >After playing with tuning for a bit machine now running fine although I >don't think what I did helped anything. Have a 15 min time delay for fils. > >In a response to a previous post I warm up & do QA checks every morning and >then schedule to do whatever whenever. > >Thanks for your thoughts. > >Mike T. >RCC > ____________________________________________________________ Find what you are looking for with the Lycos Yellow Pages http://r.lycos.com/r/yp_emailfooter/http://yellowpages.lycos.com/default.asp?SRC=lycos10  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUD00BI1NF20Q@hubbard.azu.nl>; Wed, 10 Mar 2004 21:25:52 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004031021254907889 ; Wed, 10 Mar 2004 21:25:49 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id VAA15270; Wed, 10 Mar 2004 21:27:38 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma015256; Wed, 10 Mar 2004 21:27:16 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id MAA04837 for linac-eng-list; Wed, 10 Mar 2004 12:31:19 -0600 (CST) Received: from email.med.yale.edu (email.med.yale.edu [130.132.232.16]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id MAA04829 for ; Wed, 10 Mar 2004 12:31:18 -0600 (CST) Received: from yale.edu (vitalip.med.yale.edu [130.132.213.170]) by email.med.yale.edu (PMDF V6.1-1 #30873) with ESMTP id <0HUD0FYLHI44KP@email.med.yale.edu> for linac-eng@plato.aristotle.net; Wed, 10 Mar 2004 13:31:17 -0500 (EST) Date: Wed, 10 Mar 2004 13:31:28 -0500 From: Peter Vitali Subject: Re: Cameras in treatment rooms Sender: owner-linac-eng@plato.aristotle.net To: Rick Smith Cc: linac-eng@plato.aristotle.net Message-id: <404F5EF4.B3688181@yale.edu> MIME-version: 1.0 X-Mailer: Mozilla 4.76 (Macintosh; U; PPC) Content-type: text/plain; charset=us-ascii; x-mac-type=54455854; x-mac-creator=4D4F5353 Content-transfer-encoding: 7bit Precedence: bulk X-Accept-Language: en References: <04Mar10.090524ast.115630@peihealth.ihis.org> X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 10 Mar 2004 13:31:28 -0500 From: Peter Vitali Subject: Re: Cameras in treatment rooms Sender: owner-linac-eng@plato.aristotle.net To: Rick Smith Cc: linac-eng@plato.aristotle.net X-Accept-Language: en X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Rick:' I just replace the camera. The time it takes to replace the chip, plus the equipment necessary to align it, makes it cheaper to just replace them. Years ago (15) I purchased the repair manuals for all the cameras that we were using. They changed from pot controls for alignment to having to use a P.C. with a special connector and software to align the cameras. If I remember correctly, the software was expensive. I just received a quote for a new Panasonic Camera Model WV-CP224 which list the price at $175.00 US. Also I am only loosing them in a room where the Accelerator has 18 MV Photons so it is costing me about $350.00 a year for cameras. All my other rooms with energies up to 10 MV Photons have CCD cameras that have been in use over 10 years. I have one CCD camera that has been in use 15 years in a 6 MV room. The cameras in the 18 MV room I have to change every year or sooner. I don't remember having to change the CCD Cameras until recently (last 5 years or so), but then the CCD cameras I was using before in the 18 MV room were probably not susceptible to neutron damage. I think with what ever improvements they made to the cameras they made them more sensitive to neutrons. Don't forget these cameras are not made for radiation environments. These are run of the mill, off the shelf servalence cameras. Peter E. Vitali, CBET Therapeutic Radiological Engineer Yale New Haven Hospital 20 York Street, HRT 22 New Haven, CT. 06504 Phone: (203) 688-2948 FAX: (203) 688-3663 E-mail: peter.vitali@yale.edu As usual, everything I say may be plausibly denied at my employer's convenience...  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUD00C3POGQDX@hubbard.azu.nl>; Wed, 10 Mar 2004 21:48:28 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004031021482604927 ; Wed, 10 Mar 2004 21:48:26 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id VAA17652; Wed, 10 Mar 2004 21:50:14 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma017616; Wed, 10 Mar 2004 21:50:00 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id KAA01874 for linac-eng-list; Wed, 10 Mar 2004 10:48:52 -0600 (CST) Received: from ns1.cancercare.on.ca (mail.cancercare.on.ca [204.225.32.6]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id KAA01870 for ; Wed, 10 Mar 2004 10:48:50 -0600 (CST) Received: from hrccex.hrcc.on.ca (hrccex.hrcc.on.ca [142.21.246.25]) by ns1.cancercare.on.ca (8.12.8/8.12.8) with ESMTP id i2AGlxNl010522; Wed, 10 Mar 2004 11:47:59 -0500 Received: by hrccex.hrcc.on.ca with Internet Mail Service (5.5.2653.19) id ; Wed, 10 Mar 2004 11:49:35 -0500 Date: Wed, 10 Mar 2004 11:49:27 -0500 From: "Hurd, Charles" Subject: RE: Cameras in treatment rooms Sender: owner-linac-eng@plato.aristotle.net To: 'Rick Smith' , linac-eng@plato.aristotle.net Message-id: <9C688FB52A05D51194750002B325B5F70528CE10@hrccex.hrcc.on.ca> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 10 Mar 2004 11:49:27 -0500 From: "Hurd, Charles" Subject: RE: Cameras in treatment rooms Sender: owner-linac-eng@plato.aristotle.net To: 'Rick Smith' , linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f We haven't had to do this yet but if the images from our new Panasonic Camera systems continue to degrade at the rate they are now, we may have to consider that option.The Camera's are not cheap. As far as a source for your Sony IC, I did a search on Google and got plenty of hits.I have attached a site you might want to try. http://www.searchlighttech.com/searchlighttechFrames.cfm?FeaturedVendorPage= FeaturedVendorPage&description=icx208ak Chuck Hurd Electronics Technologist Physics Department Juravinski Cancer Centre -----Original Message----- From: Rick Smith [mailto:ersmith@ihis.org] Sent: Wednesday, March 10, 2004 7:57 AM To: linac-eng@plato.aristotle.net Subject: Cameras in treatment rooms Has anyone ever gone to the trouble of replacing the CCD chip in their video cameras after they suffer pixel damage. I have been trying to locate a source for the ccd chip in a Pelco camera and can't find a supplier. The chip is a Sony ICX208AK . Rick Smith PEI Cancer Centre This information is directed in confidence solely to the person named above and may not otherwise be distributed, copied or disclosed. Therefore, this information should be considered strictly confidential. If you have received this email in error, please notify the sender immediately via a return email for further direction. Thank you for your assistance.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUE000ARQ18F9@hubbard.azu.nl> for jkok@sims-ms-daemon; Thu, 11 Mar 2004 11:20:01 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004031111195625826 for ; Thu, 11 Mar 2004 11:19:56 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id LAA25092 for ; Thu, 11 Mar 2004 11:21:44 +0100 (MET) Received: from smtp.jiscmail.ac.uk(130.246.192.48) by armstrong.azu.nl via smap (V1.3) id xma023998; Thu, 11 Mar 2004 11:18:39 +0100 Received: from LISTSERV.JISCMAIL.AC.UK (jiscmail.ac.uk) by smtp.jiscmail.ac.uk (LSMTP for Windows NT v1.1b) with SMTP id <9.000D9D47@smtp.jiscmail.ac.uk>; Thu, 11 Mar 2004 10:16:45 +0000 Received: from JISCMAIL.AC.UK by JISCMAIL.AC.UK (LISTSERV-TCP/IP release 1.8e) with spool id 34197466 for MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK; Thu, 11 Mar 2004 10:16:44 +0000 Received: from 130.246.192.52 by JISCMAIL.AC.UK (SMTPL release 1.0i) with TCP; Thu, 11 Mar 2004 10:16:44 +0000 (GMT) Received: from mail21.nhs.uk (mail21.nhs.uk [62.6.139.215]) by kili.jiscmail.ac.uk (8.12.8/8.12.8) with ESMTP id i2BAGbxe023439 for ; Thu, 11 Mar 2004 10:16:40 +0000 (GMT) Received: from [10.191.254.3] (helo=relayint1.nhs.uk) by mail21.nhs.uk with esmtp (MTC MTA) id 1B1NEt-0007Py-VF for MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK; Thu, 11 Mar 2004 10:16:31 +0000 Received: from relay.nhs.uk (194.62.42.144) by relayint1.nhs.uk (Syntegra-I1 7.0.008) id 4039DF3700416666 for MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK; Thu, 11 Mar 2004 10:16:31 +0000 Received: from mercury.University-b.wmids.nhs.uk (193.240.116.176) by relay.nhs.uk (Syntegra-4 7.0.008) (authenticated as smtp_uhb_nhs_uk@es2002.nhs.uk) id 4050339B0000671F for MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK; Thu, 11 Mar 2004 10:16:32 +0000 Received: by MERCURY with Internet Mail Service (5.5.2653.19) id ; Thu, 11 Mar 2004 10:16:30 +0000 Date: Thu, 11 Mar 2004 10:14:18 +0000 From: Graham Chalmers Subject: Location of in-room monitors Sender: Discussion amongst academic Medical Physics in the UK To: MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK Reply-to: Discussion amongst academic Medical Physics in the UK Message-id: <71A7A8BA33E3D511AF5E00034797029B105353D6@HERMES> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_KVBjvUkjNrAw9wkfHk6q6w)" Precedence: list X-RAL-MFrom: X-RAL-Connect: X-CCLRC-SPAM-report: -4.7 : BAYES_00,HTML_50_60,HTML_MESSAGE X-Scanned-By: MIMEDefang 2.39 *** EOOH *** Date: Thu, 11 Mar 2004 10:14:18 +0000 From: Graham Chalmers Subject: Location of in-room monitors Sender: Discussion amongst academic Medical Physics in the UK To: MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK Reply-to: Discussion amongst academic Medical Physics in the UK X-RAL-MFrom: X-RAL-Connect: X-CCLRC-SPAM-report: -4.7 : BAYES_00,HTML_50_60,HTML_MESSAGE X-Scanned-By: MIMEDefang 2.39 This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_KVBjvUkjNrAw9wkfHk6q6w) Content-type: text/plain; CHARSET=US-ASCII Dear List We are currently planning for the installation of 2 Varian 600C machines and are having major problems with getting an ideal position for in-room monitors, 1 for the linac and 1 for the VISIR R&V system. Has anyone experience on whether an optimal position for these monitors has been found that the radiographers are happy with. I am thinking of ceiling mounted either side of the gantry, perhaps making them switchable. Also we will have a visir keypad to put somewhere. One possibility is to get a projector and project onto the target wall of the bunker though this would involve the radiographers looking away from the patient. Any thoughts, rough positions with respect to isocentre would be much appreciated With best wishes Graham Chalmers Graham Chalmers Radiotherapy Physics University Hospital Birmingham NHS Trust Birmingham B15 2TH 0121-627-2266 DISCLAIMER: This e-mail contains proprietary information some or all of which may be confidential or legally privileged. It is for the exclusive use of the intended recipient(s) only. If an addressing or transmission error has misdirected this e-mail and you are not the intended recipient(s), please notify the author by replying to this e-mail. If you are not the intended recipient you must not use, disclose, distribute, copy, print, or rely on this e-mail, as this may be unlawful. DISCLAIMER: This e-mail contains proprietary information some or all of which may be confidential or legally privileged. It is for the exclusive use of the intended recipient(s) only. If an addressing or transmission error has misdirected this e-mail and you are not the intended recipient(s), please notify the author by replying to this e-mail. If you are not the intended recipient you must not use, disclose, distribute, copy, print, or rely on this e-mail, as this may be unlawful. --Boundary_(ID_KVBjvUkjNrAw9wkfHk6q6w) Content-type: text/html

Dear List

 

We are currently planning for the installation of 2 Varian 600C machines and are having major problems with getting an ideal position for  in-room monitors, 1 for the linac and 1 for the VISIR R&V system.

 

Has anyone experience on whether an optimal position for these monitors has been found that the radiographers are happy with. I am thinking of ceiling mounted either side of the gantry, perhaps making them switchable. Also we will have a visir keypad to put somewhere.

 

One possibility is to get a projector and project onto the target wall of the bunker though this would involve the radiographers looking away from the patient.

 

Any thoughts, rough positions with respect to isocentre would be much appreciated

 

 

 

With best wishes

 

Graham Chalmers

 

 

Graham Chalmers 

Radiotherapy Physics

University Hospital Birmingham NHS Trust

Birmingham B15 2TH

0121-627-2266

 

 

 

 

DISCLAIMER: This e-mail contains proprietary information some or all of which may be confidential or legally privileged. It is for the exclusive use of the intended recipient(s) only. If an addressing or transmission error has misdirected this e-mail and you are not the intended recipient(s), please notify the author by replying to this e-mail. If you are not the intended recipient you must not use, disclose, distribute, copy, print, or rely on this e-mail, as this may be unlawful.

 

DISCLAIMER: This e-mail contains proprietary information some or all of which may be confidential or legally privileged. It is for the exclusive use of the intended recipient(s) only. If an addressing or transmission error has misdirected this e-mail and you are not the intended recipient(s), please notify the author by replying to this e-mail. If you are not the intended recipient you must not use, disclose, distribute, copy, print, or rely on this e-mail, as this may be unlawful.

--Boundary_(ID_KVBjvUkjNrAw9wkfHk6q6w)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUE005GKU11SO@hubbard.azu.nl>; Thu, 11 Mar 2004 12:46:14 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004031112461214985 ; Thu, 11 Mar 2004 12:46:12 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id MAA17178; Thu, 11 Mar 2004 12:48:01 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma017098; Thu, 11 Mar 2004 12:47:29 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id EAA20412 for linac-eng-list; Thu, 11 Mar 2004 04:04:50 -0600 (CST) Received: from gannet.scg.man.ac.uk (gannet.scg.man.ac.uk [130.88.94.110]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id EAA20408 for ; Thu, 11 Mar 2004 04:04:48 -0600 (CST) Received: from pierre.physics.cr.man.ac.uk ([130.88.240.23]) by gannet.scg.man.ac.uk with esmtp (Exim 4.20) id 1B1N3X-0006Pg-8T for linac-eng@plato.aristotle.net; Thu, 11 Mar 2004 10:04:47 +0000 Date: Thu, 11 Mar 2004 10:04:17 +0000 From: Colin McDonagh Subject: Re: Cameras in treatment rooms. Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <1861B0BB28FC0F4B9BD3E9211462EE680E95D9@pierre.physics.cr.man.ac.uk> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 8bit Precedence: bulk X-MimeOLE: Produced By Microsoft Exchange V6.0.6375.0 Content-class: urn:content-classes:message Thread-Topic: Re: Cameras in treatment rooms. Thread-Index: AcQHUDa5U6GOmNfuQJiRq8olBHu0DQ== X-Scanner: exiscan for exim4 (http://duncanthrax.net/exiscan/) *1B1N3X-0006Pg-8T*rMUv5s0z.Ks* X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id EAA20409 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 11 Mar 2004 10:04:17 +0000 From: Colin McDonagh Subject: Re: Cameras in treatment rooms. Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-MimeOLE: Produced By Microsoft Exchange V6.0.6375.0 Content-class: urn:content-classes:message Thread-Topic: Re: Cameras in treatment rooms. Thread-Index: AcQHUDa5U6GOmNfuQJiRq8olBHu0DQ== X-Scanner: exiscan for exim4 (http://duncanthrax.net/exiscan/) *1B1N3X-0006Pg-8T*rMUv5s0z.Ks* X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id EAA20409 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hi list, Here in sunny Manchester (UK) we have had similar problems with cameras, the drive for larger scale integration, seems to be the problem. We have had some success with cameras, that were previously used in our EPID systems. Assuming you are happy with monochrome images, the Hitachi KP-M1, can be purchased from Hitachi-UK: http://www.hitachi-denshi-uk.com/industrial_video/monochrome_cameras/pag es/kpm1.htm Regards Colin McDonagh.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUE00A7SXE36I@hubbard.azu.nl>; Thu, 11 Mar 2004 13:58:59 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004031113585026544 ; Thu, 11 Mar 2004 13:58:50 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id OAA08531; Thu, 11 Mar 2004 14:00:40 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma008312; Thu, 11 Mar 2004 13:59:48 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id FAA21435 for linac-eng-list; Thu, 11 Mar 2004 05:27:09 -0600 (CST) Received: from imo-m22.mx.aol.com (imo-m22.mx.aol.com [64.12.137.3]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id FAA21431 for ; Thu, 11 Mar 2004 05:27:07 -0600 (CST) Received: from PPATNAUDE2@aol.com by imo-m22.mx.aol.com (mail_out_v37.4.) id y.141.241314ef (18555) for ; Thu, 11 Mar 2004 06:26:31 -0500 (EST) Date: Thu, 11 Mar 2004 06:26:31 -0500 (EST) From: PPATNAUDE2@aol.com Subject: thanks Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <141.241314ef.2d81a6e7@aol.com> MIME-version: 1.0 X-Mailer: 7.0 for Windows sub 10709 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_bx/Z0YGqhyLzEnCu3cXtGA)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 11 Mar 2004 06:26:31 -0500 (EST) From: PPATNAUDE2@aol.com Subject: thanks Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f --Boundary_(ID_bx/Z0YGqhyLzEnCu3cXtGA) Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7bit Thank for all the info when you test outputs in morning do you test all beam everyday and do you use buildup on output device taking another poll. Thanks again for info. --Boundary_(ID_bx/Z0YGqhyLzEnCu3cXtGA) Content-type: text/html; charset=US-ASCII Content-transfer-encoding: quoted-printable Thank for all the info when you  test outputs in morning do you test all beam everyday and do=20= you use buildup on output device taking another poll. Thanks again for info.= --Boundary_(ID_bx/Z0YGqhyLzEnCu3cXtGA)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUF00K6D350BE@hubbard.azu.nl>; Thu, 11 Mar 2004 16:03:03 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004031116025602972 ; Thu, 11 Mar 2004 16:02:56 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id QAA14090; Thu, 11 Mar 2004 16:04:45 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma013986; Thu, 11 Mar 2004 16:04:14 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id HAA22676 for linac-eng-list; Thu, 11 Mar 2004 07:12:42 -0600 (CST) Received: from mail.cbdha.nshealth.ca (mail.cbdha.nshealth.ca [142.176.129.245]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id HAA22671 for ; Thu, 11 Mar 2004 07:12:38 -0600 (CST) Received: from ELECTECH ([128.222.7.122]) by mail.cbdha.nshealth.ca (Merak 7.2.3) with SMTP id LOA74478 for ; Thu, 11 Mar 2004 09:12:38 -0400 Date: Thu, 11 Mar 2004 09:12:20 -0400 From: Greg MacKinnon Subject: Exact Counch Hand Pendant Error Sender: owner-linac-eng@plato.aristotle.net To: "LinacEng (E-mail)" Message-id: <007201c4076a$7cb5bef0$7a07de80@ELECTECH> MIME-version: 1.0 X-Mailer: Microsoft Outlook CWS, Build 9.0.2416 (9.0.2910.0) Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 7bit Importance: Normal Precedence: bulk X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 (Normal) *** EOOH *** Date: Thu, 11 Mar 2004 09:12:20 -0400 From: Greg MacKinnon Subject: Exact Counch Hand Pendant Error Sender: owner-linac-eng@plato.aristotle.net To: "LinacEng (E-mail)" Importance: Normal X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 (Normal) Hi Group Over the last few days we have been getting an intermittent ERROR E on the left couch hand pendant display. It clears after hitting ENTER several times. I have swap hand pendants from side to side & with other units with no luck. Always same problem. Any suggestion on what may be cause this fault of ERROR E. Thanks in advance. __________________________________________ Greg MacKinnon, C.E.T. Linear Accelerator Service Technologist Cape Breton Cancer Centre 1482 George Street Sydney, Nova Scotia, Canada B1P 1P3 tel: (902) 567-8076 fax: (902) 567-8075 email: mackinnongreg@cbdha.nshealth.ca  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUF00KJS3E0BE@hubbard.azu.nl>; Thu, 11 Mar 2004 16:08:27 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004031116082426821 ; Thu, 11 Mar 2004 16:08:24 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id QAA15368; Thu, 11 Mar 2004 16:10:13 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma015143; Thu, 11 Mar 2004 16:09:20 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id HAA22789 for linac-eng-list; Thu, 11 Mar 2004 07:21:24 -0600 (CST) Received: from mail23.nhs.uk (mail23.nhs.uk [62.6.139.221]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id HAA22785 for ; Thu, 11 Mar 2004 07:21:22 -0600 (CST) Received: from [10.191.254.3] (helo=relayint2.nhs.uk) by mail23.nhs.uk with esmtp (MTC MTA) id 1B1Q7I-0003zs-BB for linac-eng@plato.aristotle.net; Thu, 11 Mar 2004 13:20:52 +0000 Received: from relay.nhs.uk (194.62.42.142) by relayint2.nhs.uk (Syntegra-I2 7.0.008) id 4039DF71004A5BC9 for linac-eng@plato.aristotle.net; Thu, 11 Mar 2004 13:20:52 +0000 Received: from beijing.relay.grampian.scot.nhs.uk (10.251.30.7) by relay.nhs.uk (Syntegra-2 7.0.008) (authenticated as relay_grampian_scot_nhs_uk@es2002.nhs.uk) id 405032E20002750F; Thu, 11 Mar 2004 13:20:52 +0000 Received: from arh-mail2.arh.grampian.scot.nhs.uk ([9.16.60.28]) by beijing.relay.grampian.scot.nhs.uk with Microsoft SMTPSVC(5.0.2195.6713) ; Thu, 11 Mar 2004 13:18:39 +0000 Received: by arh-mail2.arh.grampian.scot.nhs.uk with Internet Mail Service (5.5.2657.72) id ; Thu, 11 Mar 2004 13:17:41 +0000 Date: Thu, 11 Mar 2004 13:21:57 +0000 From: David.Smith@arh.grampian.scot.nhs.uk Subject: RE: thanks [Scanned By SOPHOS Anti-Virus] Sender: owner-linac-eng@plato.aristotle.net To: PPATNAUDE2@aol.com Cc: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; CHARSET=US-ASCII Precedence: bulk X-OriginalArrivalTime: 11 Mar 2004 13:18:39.0281 (UTC) FILETIME=[5DFA8210:01C4076B] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 11 Mar 2004 13:21:57 +0000 From: David.Smith@arh.grampian.scot.nhs.uk Subject: RE: thanks [Scanned By SOPHOS Anti-Virus] Sender: owner-linac-eng@plato.aristotle.net To: PPATNAUDE2@aol.com Cc: linac-eng@plato.aristotle.net X-OriginalArrivalTime: 11 Mar 2004 13:18:39.0281 (UTC) FILETIME=[5DFA8210:01C4076B] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f In Aberdeen we test every clinical beam, wedged and plain, every day on our 3 linacs. 4 times a week per machine we use the Doublecheck device with 1 cm build up and once a week we use a calibrated electrometer: Farmer 2670 with a NE 2571 carbon chamber. Also once every 4 weeks we calibrate the Doublecheck against the Farmer electrometer. Each machine has its own dedicated Doublecheck and electrometer. Dave Smith > -----Original Message----- > From: PPATNAUDE2@aol.com [SMTP:PPATNAUDE2@aol.com] > Sent: Thursday, March 11, 2004 11:27 AM > To: linac-eng@plato.aristotle.net > Subject: thanks [Scanned By SOPHOS Anti-Virus] > > Thank for all the info > when you test outputs in morning do you test all beam everyday and do you > use buildup on output device taking another poll. Thanks again for info.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUF00NH55HQ3J@hubbard.azu.nl>; Thu, 11 Mar 2004 16:53:52 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004031116534916644 ; Thu, 11 Mar 2004 16:53:49 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id QAA26116; Thu, 11 Mar 2004 16:55:39 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma026059; Thu, 11 Mar 2004 16:55:16 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id HAA23528 for linac-eng-list; Thu, 11 Mar 2004 07:58:54 -0600 (CST) Received: from mail23.nhs.uk (mail23.nhs.uk [62.6.139.221]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id HAA23522 for ; Thu, 11 Mar 2004 07:58:52 -0600 (CST) Received: from [10.191.254.3] (helo=relayint1.nhs.uk) by mail23.nhs.uk with esmtp (MTC MTA) id 1B1Qha-0000gs-AM for linac-eng@plato.aristotle.net; Thu, 11 Mar 2004 13:58:22 +0000 Received: from relay.nhs.uk (194.62.42.144) by relayint1.nhs.uk (Syntegra-I1 7.0.008) id 4039DF3700431465 for linac-eng@plato.aristotle.net; Thu, 11 Mar 2004 13:58:22 +0000 Received: from gstt.nhs.uk (195.105.110.3) by relay.nhs.uk (Syntegra-4 7.0.008) id 4050339B0002BF95 for linac-eng@plato.aristotle.net; Thu, 11 Mar 2004 13:58:22 +0000 Received: from (EHLO ex1.gstt.sthames.nhs.uk) (195.105.110.28) by gstt.nhs.uk with SMTP (im); Thu, 11 Mar 2004 14:03:47 +0000 (GST) Received: by ex1.gstt.sthames.nhs.uk with Internet Mail Service (5.5.2653.19) id ; Thu, 11 Mar 2004 13:58:12 +0000 Date: Thu, 11 Mar 2004 13:58:11 +0000 From: Richard.Newby@gstt.sthames.nhs.uk Subject: RE: Exact Counch Hand Pendant Error Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net, mackinnongreg@cbdha.nshealth.ca Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 11 Mar 2004 13:58:11 +0000 From: Richard.Newby@gstt.sthames.nhs.uk Subject: RE: Exact Counch Hand Pendant Error Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net, mackinnongreg@cbdha.nshealth.ca X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Have you tried changing the cable? Rick -----Original Message----- From: Greg MacKinnon [mailto:mackinnongreg@cbdha.nshealth.ca] Sent: 11 March 2004 13:12 To: LinacEng (E-mail) Subject: Exact Counch Hand Pendant Error Hi Group Over the last few days we have been getting an intermittent ERROR E on the left couch hand pendant display. It clears after hitting ENTER several times. I have swap hand pendants from side to side & with other units with no luck. Always same problem. Any suggestion on what may be cause this fault of ERROR E. Thanks in advance. __________________________________________ Greg MacKinnon, C.E.T. Linear Accelerator Service Technologist Cape Breton Cancer Centre 1482 George Street Sydney, Nova Scotia, Canada B1P 1P3 tel: (902) 567-8076 fax: (902) 567-8075 email: mackinnongreg@cbdha.nshealth.ca -- **************************************************************************************** Please note that as from the 6th of March 2004 the Trust telephone number for both Guy's and St. Thomas' will now be 020 7188 7188. **************************************************************************************** Disclaimer **************************************************************************************** This e-mail may contain confidential and / or privileged information. Unless otherwise specified, the opinions expressed herein do not necessarily represent those of Guy's and St Thomas Hospital NHS Trust or any of its subsidiaries. If you are not the intended recipient (or have received this e-mail in error) please notify the sender and destroy this e-mail immediately. Any unauthorised copying, disclosure or distribution of the material in this e-mail is strictly prohibited. ****************************************************************************************  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUF001FD6P1D1@hubbard.azu.nl>; Thu, 11 Mar 2004 17:19:53 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004031117194816607 ; Thu, 11 Mar 2004 17:19:48 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id RAA01837; Thu, 11 Mar 2004 17:21:37 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma001744; Thu, 11 Mar 2004 17:20:59 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id IAA23988 for linac-eng-list; Thu, 11 Mar 2004 08:18:58 -0600 (CST) Received: from gwmail.harthosp.org (gwmail.harthosp.org [199.231.29.249]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id IAA23984 for ; Thu, 11 Mar 2004 08:18:57 -0600 (CST) Received: from HHCC-MTA by gwmail.harthosp.org with Novell_GroupWise; Thu, 11 Mar 2004 09:18:17 -0500 Date: Thu, 11 Mar 2004 09:17:51 -0500 From: Robert Lindeyer Subject: Re: Exact Couch Hand Pendant Error Sender: owner-linac-eng@plato.aristotle.net To: mackinnongreg@cbdha.nshealth.ca, linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.0.2 Content-type: text/plain; charset=US-ASCII Content-disposition: inline Content-transfer-encoding: 7bit Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 11 Mar 2004 09:17:51 -0500 From: Robert Lindeyer Subject: Re: Exact Couch Hand Pendant Error Sender: owner-linac-eng@plato.aristotle.net To: mackinnongreg@cbdha.nshealth.ca, linac-eng@plato.aristotle.net Content-disposition: inline X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Error E indicates a problem with the enable bar(s) on the pendant. Either it is depressed during its initialization, MEB(s) are stuck, or the relays on the PCB are bad. Check to make sure the bars operate freely. You can replace PCB at the end of the pendant, I believe the Varian P/N is 88568003. Robert Lindeyer Clinical Engineer Radiation Oncology Hartford Hospital 80 Seymour St POBox 5037 Hartford, CT 06102-5037 860-545-4346 rlindey@harthosp.org >>> "Greg MacKinnon" 03/11/04 08:12AM >>> Hi Group Over the last few days we have been getting an intermittent ERROR E on the left couch hand pendant display. It clears after hitting ENTER several times. I have swap hand pendants from side to side & with other units with no luck. Always same problem. Any suggestion on what may be cause this fault of ERROR E. Thanks in advance. __________________________________________ Greg MacKinnon, C.E.T. Linear Accelerator Service Technologist Cape Breton Cancer Centre 1482 George Street Sydney, Nova Scotia, Canada B1P 1P3 tel: (902) 567-8076 fax: (902) 567-8075 email: mackinnongreg@cbdha.nshealth.ca  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUF002QP7N81K@hubbard.azu.nl>; Thu, 11 Mar 2004 17:40:21 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004031117401500165 ; Thu, 11 Mar 2004 17:40:15 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id RAA05919; Thu, 11 Mar 2004 17:42:05 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma005888; Thu, 11 Mar 2004 17:41:37 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id IAA24749 for linac-eng-list; Thu, 11 Mar 2004 08:48:22 -0600 (CST) Received: from titan.lhsc.on.ca (titan.lhsc.on.ca [142.158.2.20]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id IAA24745 for ; Thu, 11 Mar 2004 08:48:19 -0600 (CST) Received: from mail.lrcc.on.ca (mail.lrcc.on.ca [142.158.120.242]) by titan.lhsc.on.ca (8.11.7p1+Sun/8.11.7) with SMTP id i2BEllU24115; Thu, 11 Mar 2004 09:47:47 -0500 (EST) Received: by mail.lrcc.on.ca(Lotus SMTP MTA v4.6.7 (934.1 12-30-1999)) id 85256E54.005135D0 ; Thu, 11 Mar 2004 09:47:01 -0500 Date: Thu, 11 Mar 2004 09:46:56 -0500 From: Randy.McVittie@lrcc.on.ca Subject: Re: Exact Counch Hand Pendant Error Sender: owner-linac-eng@plato.aristotle.net To: Greg MacKinnon Cc: "LinacEng (E-mail)" Message-id: <85256E54.00513403.00@mail.lrcc.on.ca> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Content-disposition: inline Precedence: bulk X-Lotus-FromDomain: LRCC X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 11 Mar 2004 09:46:56 -0500 From: Randy.McVittie@lrcc.on.ca Subject: Re: Exact Counch Hand Pendant Error Sender: owner-linac-eng@plato.aristotle.net To: Greg MacKinnon Cc: "LinacEng (E-mail)" Content-disposition: inline X-Lotus-FromDomain: LRCC X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f If it is staying on the same side you may have a problem with the connector or cable in the couch. Each time you turn on beam, the power to the handcontrols is turned off. When the beam finishes, the hand controls turn on and they go through their reset cycle. If the Motion enable circuit is closed during initializtion the display will show Error E. Good luck Randy McVittie "Greg MacKinnon" on 2004-03-11 08:12:20 To: "LinacEng \(E-mail\)" cc: (bcc: Randy McVittie/Lrcc) Subject: Exact Counch Hand Pendant Error Hi Group Over the last few days we have been getting an intermittent ERROR E on the left couch hand pendant display. It clears after hitting ENTER several times. I have swap hand pendants from side to side & with other units with no luck. Always same problem. Any suggestion on what may be cause this fault of ERROR E. Thanks in advance. __________________________________________ Greg MacKinnon, C.E.T. Linear Accelerator Service Technologist Cape Breton Cancer Centre 1482 George Street Sydney, Nova Scotia, Canada B1P 1P3 tel: (902) 567-8076 fax: (902) 567-8075 email: mackinnongreg@cbdha.nshealth.ca  1,, X-Coding-System: undecided-unix Return-path: Received: from mg2001 ([143.121.184.63]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUF003CM8C16O@hubbard.azu.nl>; Thu, 11 Mar 2004 17:55:16 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg2001 (NAVIEG 2.1 bld 63) with SMTP id M2004031117551306468 ; Thu, 11 Mar 2004 17:55:13 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id RAA08469; Thu, 11 Mar 2004 17:57:01 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma008434; Thu, 11 Mar 2004 17:56:46 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id IAA23682 for linac-eng-list; Thu, 11 Mar 2004 08:07:23 -0600 (CST) Received: from mail.cbdha.nshealth.ca (mail.cbdha.nshealth.ca [142.176.129.245]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id IAA23678 for ; Thu, 11 Mar 2004 08:07:21 -0600 (CST) Received: from ELECTECH ([128.222.7.122]) by mail.cbdha.nshealth.ca (Merak 7.2.3) with SMTP id LOA74478; Thu, 11 Mar 2004 10:07:22 -0400 Date: Thu, 11 Mar 2004 10:07:04 -0400 From: Greg MacKinnon Subject: RE: Exact Counch Hand Pendant Error In-reply-to: Sender: owner-linac-eng@plato.aristotle.net To: Richard.Newby@gstt.sthames.nhs.uk Cc: "LinacEng (E-mail)" Message-id: <008401c40772$2222d1f0$7a07de80@ELECTECH> MIME-version: 1.0 X-Mailer: Microsoft Outlook CWS, Build 9.0.2416 (9.0.2910.0) Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 7bit Importance: Normal Precedence: bulk X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 (Normal) *** EOOH *** Date: Thu, 11 Mar 2004 10:07:04 -0400 From: Greg MacKinnon Subject: RE: Exact Counch Hand Pendant Error In-reply-to: Sender: owner-linac-eng@plato.aristotle.net To: Richard.Newby@gstt.sthames.nhs.uk Cc: "LinacEng (E-mail)" Importance: Normal X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 (Normal) Hi Rick Yes changed cables with pendant & also but on new cable. Thanks Greg -----Original Message----- From: Richard.Newby@gstt.sthames.nhs.uk [mailto:Richard.Newby@gstt.sthames.nhs.uk] Sent: Thursday, March 11, 2004 9:58 AM To: linac-eng@plato.aristotle.net; mackinnongreg@cbdha.nshealth.ca Subject: RE: Exact Counch Hand Pendant Error Have you tried changing the cable? Rick -----Original Message----- From: Greg MacKinnon [mailto:mackinnongreg@cbdha.nshealth.ca] Sent: 11 March 2004 13:12 To: LinacEng (E-mail) Subject: Exact Counch Hand Pendant Error Hi Group Over the last few days we have been getting an intermittent ERROR E on the left couch hand pendant display. It clears after hitting ENTER several times. I have swap hand pendants from side to side & with other units with no luck. Always same problem. Any suggestion on what may be cause this fault of ERROR E. Thanks in advance. __________________________________________ Greg MacKinnon, C.E.T. Linear Accelerator Service Technologist Cape Breton Cancer Centre 1482 George Street Sydney, Nova Scotia, Canada B1P 1P3 tel: (902) 567-8076 fax: (902) 567-8075 email: mackinnongreg@cbdha.nshealth.ca -- **************************************************************************** ************ Please note that as from the 6th of March 2004 the Trust telephone number for both Guy's and St. Thomas' will now be 020 7188 7188. **************************************************************************** ************ Disclaimer **************************************************************************** ************ This e-mail may contain confidential and / or privileged information. Unless otherwise specified, the opinions expressed herein do not necessarily represent those of Guy's and St Thomas Hospital NHS Trust or any of its subsidiaries. If you are not the intended recipient (or have received this e-mail in error) please notify the sender and destroy this e-mail immediately. Any unauthorised copying, disclosure or distribution of the material in this e-mail is strictly prohibited. **************************************************************************** ************  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUF003M394THX@hubbard.azu.nl> for jkok@sims-ms-daemon; Thu, 11 Mar 2004 18:12:35 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004031118123300111 for ; Thu, 11 Mar 2004 18:12:33 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA11104 for ; Thu, 11 Mar 2004 18:14:22 +0100 (MET) Received: from smtp.jiscmail.ac.uk(130.246.192.48) by armstrong.azu.nl via smap (V1.3) id xma010978; Thu, 11 Mar 2004 18:13:38 +0100 Received: from LISTSERV.JISCMAIL.AC.UK (jiscmail.ac.uk) by smtp.jiscmail.ac.uk (LSMTP for Windows NT v1.1b) with SMTP id <5.000DA22D@smtp.jiscmail.ac.uk>; Thu, 11 Mar 2004 17:11:44 +0000 Received: from JISCMAIL.AC.UK by JISCMAIL.AC.UK (LISTSERV-TCP/IP release 1.8e) with spool id 34222769 for MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK; Thu, 11 Mar 2004 17:11:43 +0000 Received: from 130.246.192.52 by JISCMAIL.AC.UK (SMTPL release 1.0i) with TCP; Thu, 11 Mar 2004 17:11:43 +0000 (GMT) Received: from mail23.nhs.uk (mail23.nhs.uk [62.6.139.221]) by kili.jiscmail.ac.uk (8.12.8/8.12.8) with ESMTP id i2BHBcxe029927 for ; Thu, 11 Mar 2004 17:11:38 +0000 (GMT) Received: from [10.191.254.3] (helo=relayint1.nhs.uk) by mail23.nhs.uk with esmtp (MTC MTA) id 1B1T1E-00062U-Ew for MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK; Thu, 11 Mar 2004 16:26:48 +0000 Received: from relay.nhs.uk (194.62.42.143) by relayint1.nhs.uk (Syntegra-I1 7.0.008) id 4039DF3700442D46 for MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK; Thu, 11 Mar 2004 16:26:48 +0000 Received: from torph43 (195.107.40.80) by relay.nhs.uk (Syntegra-3 7.0.008) id 4050333E000476DD for MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK; Thu, 11 Mar 2004 16:26:48 +0000 Received: from Unknown [10.90.210.38] by torph43 - SurfControl E-mail Filter (4.7); Thu, 11 Mar 2004 16:26:51 +0000 Received: by nnemail.nnuh.nhs.uk with Internet Mail Service (5.5.2653.19) id ; Thu, 11 Mar 2004 16:26:52 +0000 Date: Thu, 11 Mar 2004 16:26:52 +0000 From: Robert Hutchings Subject: Re: Location of in-room monitors Sender: Discussion amongst academic Medical Physics in the UK To: MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK Reply-to: Discussion amongst academic Medical Physics in the UK Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: text/plain; charset=iso-8859-1 Precedence: list X-RAL-MFrom: X-RAL-Connect: X-SEF-5980BD5F-DD2F-4F8C-88E8-3E6394F09C: 1 X-CCLRC-SPAM-report: -4.74 : BAYES_00,NO_REAL_NAME X-Scanned-By: MIMEDefang 2.39 *** EOOH *** Date: Thu, 11 Mar 2004 16:26:52 +0000 From: Robert Hutchings Subject: Re: Location of in-room monitors Sender: Discussion amongst academic Medical Physics in the UK To: MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK Reply-to: Discussion amongst academic Medical Physics in the UK X-RAL-MFrom: X-RAL-Connect: X-SEF-5980BD5F-DD2F-4F8C-88E8-3E6394F09C: 1 X-CCLRC-SPAM-report: -4.74 : BAYES_00,NO_REAL_NAME X-Scanned-By: MIMEDefang 2.39 They have been in place for 14 months (four bunkers so eight in all) and no detectable problems so far. Robert Hutchings Oncology Service Manager Tel: 2351 -----Original Message----- From: Hoole, Andrew [mailto:andrew.hoole@ADDENBROOKES.NHS.UK] Sent: 11 March 2004 15:04 To: MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK Subject: Re: Location of in-room monitors I can see the reason for having the monitors at the head of the couch but don't they pick up a lot of primary radiation being inline with the isocentre or doesn't this effect monitor technology too much. Andrew Hoole ------------------------------------------------------------------------- Medical Physics , Box 152 Addenbrookes NHS Trust Hills Rd Cambridge Tel: (+44) (0)1223-216544 CB2 2QQ Fax: (+44) (0)1223-257137 UK Email: andrew.hoole@addenbrookes.nhs.uk -------------------------------------------------------------------------- > -----Original Message----- > From: Robert Hutchings [SMTP:robert.hutchings@NNUH.NHS.UK] > Sent: Thursday, March 11, 2004 12:57 PM > To: MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK > Subject: Re: Location of in-room monitors > > Graham > Pictures being worth a thou....... The attached shows where we have > positioned treatment room monitors in Norwich. They are in line with the > isocentre and no complaints from users. > Regards > Robert > > Robert Hutchings > Oncology Service Manager > Norfolk & Norwich University Hospital > Colney Lane > Norwich > NR4 7UY > Tel: +44 (0) 1603 286351 > Mob: 07889 443566 > Fax: 01603 286957 > robert.hutchings@nnuh.nhs.uk > > > > -----Original Message----- > From: Graham Chalmers [mailto:Graham.Chalmers@UHB.NHS.UK] > Sent: 11 March 2004 10:14 > To: MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK > Subject: Location of in-room monitors > > > > Dear List > > > > We are currently planning for the installation of 2 Varian 600C > machines and are having major problems with getting an ideal position for > in-room monitors, 1 for the linac and 1 for the VISIR R&V system. > > > > Has anyone experience on whether an optimal position for these > monitors has been found that the radiographers are happy with. I am > thinking of ceiling mounted either side of the gantry, perhaps making them > switchable. Also we will have a visir keypad to put somewhere. > > > > One possibility is to get a projector and project onto the target > wall of the bunker though this would involve the radiographers looking > away from the patient. > > > > Any thoughts, rough positions with respect to isocentre would be > much appreciated > > > > > > > > With best wishes > > > > Graham Chalmers > > > > > > Graham Chalmers > > Radiotherapy Physics > > University Hospital Birmingham NHS Trust > > Birmingham B15 2TH > > 0121-627-2266 > > > > > > > > > > DISCLAIMER: This e-mail contains proprietary information some or all > of which may be confidential or legally privileged. It is for the > exclusive use of the intended recipient(s) only. If an addressing or > transmission error has misdirected this e-mail and you are not the > intended recipient(s), please notify the author by replying to this > e-mail. If you are not the intended recipient you must not use, disclose, > distribute, copy, print, or rely on this e-mail, as this may be unlawful. > > > > DISCLAIMER: This e-mail contains proprietary information some or all > of which may be confidential or legally privileged. It is for the > exclusive use of the intended recipient(s) only. If an addressing or > transmission error has misdirected this e-mail and you are not the > intended recipient(s), please notify the author by replying to this > e-mail. If you are not the intended recipient you must not use, disclose, > distribute, copy, print, or rely on this e-mail, as this may be unlawful. > << File: LA 2.JPG >>  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUF004PZA7S8L@hubbard.azu.nl>; Thu, 11 Mar 2004 18:35:58 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004031118355600517 ; Thu, 11 Mar 2004 18:35:56 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA15089; Thu, 11 Mar 2004 18:37:45 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma015039; Thu, 11 Mar 2004 18:37:16 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id JAA26276 for linac-eng-list; Thu, 11 Mar 2004 09:45:51 -0600 (CST) Received: from PHSEXCHICO.MGH.HARVARD.EDU (phsexchico.mgh.harvard.edu [132.183.126.50]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id JAA26272 for ; Thu, 11 Mar 2004 09:45:49 -0600 (CST) Received: by phsexchico.mgh.harvard.edu with Internet Mail Service (5.5.2657.72) id ; Thu, 11 Mar 2004 10:45:19 -0500 Date: Thu, 11 Mar 2004 10:45:17 -0500 From: "Maddox, Buford J" Subject: RE: thanks Sender: owner-linac-eng@plato.aristotle.net To: "'PPATNAUDE2@aol.com'" , linac-eng@plato.aristotle.net Message-id: <36298D09ED1AD311B4DC0008C7F4D4E1114663A6@phsexch6.partners.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_APXYI8DayCJoQNPF4DfpWg)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 11 Mar 2004 10:45:17 -0500 From: "Maddox, Buford J" Subject: RE: thanks Sender: owner-linac-eng@plato.aristotle.net To: "'PPATNAUDE2@aol.com'" , linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_APXYI8DayCJoQNPF4DfpWg) Content-type: text/plain; charset=iso-8859-1 We test all beams in use (low and high e are seldom used) each morning before treatment begins, using a Keithley tracker connected to Argus software. Argus software has alarm settings which alert the user to the need for action. Appropriate build up is used, but does not need to be exactly correct for all beams. The numbers obtained are not used for absolute dosimetry, but as a daily consistency check. the idea is to ensure that the calibration has not changed since the last absolute calibration. The am checker is cross checked, recorded, and adjusted if neccessary (rarely) during the monthly absolute dosimetry calibration. Some machines might need more frequent checks, as decided from their history and the consequences of a change. For instance, a one shot stereotactic surgery must be calibrated right before the surgery. Jerry -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of PPATNAUDE2@aol.com Sent: Thursday, March 11, 2004 6:27 AM To: linac-eng@plato.aristotle.net Subject: thanks Thank for all the info when you test outputs in morning do you test all beam everyday and do you use buildup on output device taking another poll. Thanks again for info. --Boundary_(ID_APXYI8DayCJoQNPF4DfpWg) Content-type: text/html; charset=iso-8859-1
We test all beams in use (low and high e are seldom used) each morning before treatment begins, using a Keithley tracker connected to Argus software.  Argus software has alarm settings which alert the user to the need for action. Appropriate build up is used, but does not need to be exactly correct for all beams.  The numbers obtained are not used for absolute dosimetry, but as a daily consistency check.  the idea is to ensure that the calibration has not changed since the last absolute calibration.  The am checker is cross checked, recorded, and adjusted if neccessary (rarely) during the monthly absolute dosimetry calibration.  
    Some machines might need more frequent checks, as decided from their history and the consequences of a change.  For instance, a one shot stereotactic surgery must be calibrated right before the surgery. 
Jerry
-----Original Message-----
From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of PPATNAUDE2@aol.com
Sent: Thursday, March 11, 2004 6:27 AM
To: linac-eng@plato.aristotle.net
Subject: thanks

Thank for all the info
when you  test outputs in morning do you test all beam everyday and do you use buildup on output device taking another poll. Thanks again for info.
--Boundary_(ID_APXYI8DayCJoQNPF4DfpWg)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUF00BZHJJSJV@hubbard.azu.nl>; Thu, 11 Mar 2004 21:57:37 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004031121573303030 ; Thu, 11 Mar 2004 21:57:33 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id VAA16076; Thu, 11 Mar 2004 21:59:22 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma016026; Thu, 11 Mar 2004 21:59:16 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id NAA01742 for linac-eng-list; Thu, 11 Mar 2004 13:02:22 -0600 (CST) Received: from dalwhinnie.chhlth.govt.nz ([203.163.70.2]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id NAA01738 for ; Thu, 11 Mar 2004 13:02:19 -0600 (CST) Received: from mailsweeper2.chhlth.govt.nz (mailsweeper2.chhlth.govt.nz [159.117.18.162]) by dalwhinnie.chhlth.govt.nz (8.12.8/8.12.5) with ESMTP id i2BJ4hfU025579 for ; Fri, 12 Mar 2004 08:04:44 +1300 Received: from SMTPGATE.CHHLTH.GOVT.NZ (unverified) by mailsweeper2.chhlth.govt.nz (Content Technologies SMTPRS 4.3.1) with ESMTP id for ; Fri, 12 Mar 2004 08:01:14 +1300 Received: from CHCH2-MTA by SMTPGATE.CHHLTH.GOVT.NZ with Novell_GroupWise; Fri, 12 Mar 2004 08:02:16 +1300 Date: Fri, 12 Mar 2004 08:01:59 +1300 From: Dave Pinchin Subject: RE: Exact Counch Hand Pendant Error Sender: owner-linac-eng@plato.aristotle.net To: mackinnongreg@cbdha.nshealth.ca, linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.0.4 Content-type: text/plain; charset=us-ascii Content-disposition: inline Content-transfer-encoding: 8bit Precedence: bulk X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id NAA01739 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 12 Mar 2004 08:01:59 +1300 From: Dave Pinchin Subject: RE: Exact Counch Hand Pendant Error Sender: owner-linac-eng@plato.aristotle.net To: mackinnongreg@cbdha.nshealth.ca, linac-eng@plato.aristotle.net Content-disposition: inline X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id NAA01739 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f G'day, Error E is the MEB test at power on. I have seen the plastic of the pendant back distort with time (and hot RT's squeezing). Worth while checking the pendant to ensure no physical jamming. Next open the unit and swap the MEB PCB. could be uswitch failure (or relay failure). Best to bite the bullet and swap the board rather than components. :D >>> "Greg MacKinnon" 12/03/04 03:07:04 >>> Hi Rick Yes changed cables with pendant & also but on new cable. Thanks Greg -----Original Message----- From: Richard.Newby@gstt.sthames.nhs.uk [mailto:Richard.Newby@gstt.sthames.nhs.uk] Sent: Thursday, March 11, 2004 9:58 AM To: linac-eng@plato.aristotle.net; mackinnongreg@cbdha.nshealth.ca Subject: RE: Exact Counch Hand Pendant Error Have you tried changing the cable? Rick -----Original Message----- From: Greg MacKinnon [mailto:mackinnongreg@cbdha.nshealth.ca] Sent: 11 March 2004 13:12 To: LinacEng (E-mail) Subject: Exact Counch Hand Pendant Error Hi Group Over the last few days we have been getting an intermittent ERROR E on the left couch hand pendant display. It clears after hitting ENTER several times. I have swap hand pendants from side to side & with other units with no luck. Always same problem. Any suggestion on what may be cause this fault of ERROR E. Thanks in advance. __________________________________________ Greg MacKinnon, C.E.T. Linear Accelerator Service Technologist Cape Breton Cancer Centre 1482 George Street Sydney, Nova Scotia, Canada B1P 1P3 tel: (902) 567-8076 fax: (902) 567-8075 email: mackinnongreg@cbdha.nshealth.ca -- **************************************************************************** ************ Please note that as from the 6th of March 2004 the Trust telephone number for both Guy's and St. Thomas' will now be 020 7188 7188. **************************************************************************** ************ Disclaimer **************************************************************************** ************ This e-mail may contain confidential and / or privileged information. Unless otherwise specified, the opinions expressed herein do not necessarily represent those of Guy's and St Thomas Hospital NHS Trust or any of its subsidiaries. If you are not the intended recipient (or have received this e-mail in error) please notify the sender and destroy this e-mail immediately. Any unauthorised copying, disclosure or distribution of the material in this e-mail is strictly prohibited. **************************************************************************** ************ ********************************************************************** ** This email and attachments have been scanned for content and viruses and is believed to be clean ** This email or attachments may contain confidential or legally privileged information intended for the sole use of the addressee(s). Any use, redistribution, disclosure, or reproduction of this message, except as intended, is prohibited. If you received this email in error, please notify the sender and remove all copies of the message, including any attachments. Any views or opinions expressed in this email (unless otherwise stated) may not represent those of Canterbury District Health Board **********************************************************************  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUF00HDHQ1P08@hubbard.azu.nl>; Fri, 12 Mar 2004 00:17:51 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004031200174804601 ; Fri, 12 Mar 2004 00:17:48 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id AAA06829; Fri, 12 Mar 2004 00:19:38 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma006744; Fri, 12 Mar 2004 00:19:00 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id PAA04721 for linac-eng-list; Thu, 11 Mar 2004 15:06:41 -0600 (CST) Received: from cwav01.cw.bc.ca (mail2.cw.bc.ca [207.23.159.180]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id PAA04717 for ; Thu, 11 Mar 2004 15:06:39 -0600 (CST) Received: From server17.bccancer.bc.ca ([205.233.164.254]) by cwav01.cw.bc.ca (WebShield SMTP v4.5 MR1a); id 1079039136197; Thu, 11 Mar 2004 13:05:36 -0800 Received: by SERVER17 with Internet Mail Service (5.5.2653.19) id ; Thu, 11 Mar 2004 13:06:08 -0800 Date: Thu, 11 Mar 2004 13:08:38 -0800 From: "Patrick Wong (VICC)" Subject: RE: Exact Counch Hand Pendant Error Sender: owner-linac-eng@plato.aristotle.net To: Greg MacKinnon Cc: "LinacEng (E-mail)" Message-id: <6BAF4D075F07D411B30900508B94CBA007A4F856@SERVER20> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_0TgQLpkj8mADWPv6myEn+A)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 11 Mar 2004 13:08:38 -0800 From: "Patrick Wong (VICC)" Subject: RE: Exact Counch Hand Pendant Error Sender: owner-linac-eng@plato.aristotle.net To: Greg MacKinnon Cc: "LinacEng (E-mail)" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_0TgQLpkj8mADWPv6myEn+A) Content-type: text/plain; CHARSET=US-ASCII If the "ERR0R E" happened right after the RT walk in the treatment room and pick up the hand pendant and found out one of the pendant had a "errorE" display on the hand pendant and you can clear by pressing the clear button. and this problem didn't happened after they finished the patient setup and walk out the treatment room. Then the problem is every time when beam finish, the irradiation key at the dedicated keyboard turn off, it apply the power to the two hand pendants and two side panels at the couch. if the power named "sw12V" come from the K13 relay at the Stand/ Back connector Motherboard PCB has a bad contact on that relay, you will had that problem either intermittent lost power and the 12V not high enough to go through rest cycle the display will show Error E. If the relay contact bad enough that you have time to catch on the problem, otherwise you just only see the error E on the hand pendant. You have to imagine how many time the hand pendant power off/on for every patient X a whole day of treatment. The K13 relay contact working very hard to supply power to the hand pendant and couch side panel. I have this kind of problem on one of the 21EX two months ago, change the K13 relay, problem gone. Tips, to change the K13 relay, you have to power down the machine otherwise you will have the stand power breaker tripped. Other thing is to check the rubber buttons didn't stuck on the hand pendant, this will show "Error E" too. Good luck and happy hunting. Patrick Wong C.T. Radiotherapy Service Technologist Dept. Of medical Physics Vancouver Island Cancer Centre 2410 Lee Avenue Victoria B.C. Canada V8R 6V5 Tel:(250) 519-5500 X-3737 Fax.(250)519-2024 > -----Original Message----- > From: Randy.McVittie@lrcc.on.ca [mailto:Randy.McVittie@lrcc.on.ca] > Sent: Thursday, March 11, 2004 6:47 AM > To: Greg MacKinnon > Cc: LinacEng (E-mail) > Subject: Re: Exact Counch Hand Pendant Error > > > > > > If it is staying on the same side you may have a problem with > the connector or > cable in the couch. > > Each time you turn on beam, the power to the handcontrols is > turned off. When > the beam finishes, the hand controls turn on > and they go through their reset cycle. If the Motion enable > circuit is closed > during initializtion the display will show Error E. > > Good luck > > Randy McVittie > > > > > > > > "Greg MacKinnon" on > 2004-03-11 08:12:20 > > To: "LinacEng \(E-mail\)" > cc: (bcc: Randy McVittie/Lrcc) > > Subject: Exact Counch Hand Pendant Error > > > > Hi Group > > Over the last few days we have been getting an intermittent > ERROR E on the > left couch hand pendant display. It clears after hitting ENTER several > times. I have swap hand pendants from side to side & with > other units with > no luck. Always same problem. Any suggestion on what may be > cause this fault > of ERROR E. > > Thanks in advance. > > __________________________________________ > Greg MacKinnon, C.E.T. > Linear Accelerator Service Technologist > Cape Breton Cancer Centre > 1482 George Street > Sydney, Nova Scotia, Canada > B1P 1P3 > tel: (902) 567-8076 > fax: (902) 567-8075 > email: mackinnongreg@cbdha.nshealth.ca > > > > > > --Boundary_(ID_0TgQLpkj8mADWPv6myEn+A) Content-type: text/html Content-transfer-encoding: quoted-printable RE: Exact Counch Hand Pendant Error

If the "ERR0R E" happened right after the = RT walk in the treatment room and pick up the hand pendant and found = out one
of the pendant had a "errorE" display on = the hand pendant and you can clear by pressing the clear button. and = this problem didn't

happened after they finished the patient setup and = walk out the treatment room.

Then the problem is every time when beam finish, the = irradiation key at the dedicated keyboard turn off, it apply the power = to the two

hand pendants and two side panels at the couch. if = the power named "sw12V" come from the K13 relay at the Stand/ = Back connector Motherboard

PCB has a bad contact on that relay, you will had = that problem either intermittent lost power and the 12V not high enough = to go through

rest cycle the display will show Error E. If the = relay contact bad enough that you have time to catch on the problem, = otherwise you just only

see the error E on the hand pendant.
You have to imagine how many time the hand pendant = power off/on for every patient X a whole day of treatment. The K13 = relay contact

working very hard to supply power to the hand pendant = and couch side panel.
I have this kind of problem on one of the 21EX two = months ago, change the K13 relay, problem gone.
Tips, to change the K13 relay, you have to power = down the machine otherwise you will have the stand power breaker = tripped.

Other thing is to check the rubber buttons didn't = stuck on the hand pendant, this will show "Error E" too. =

Good luck and happy hunting.


Patrick Wong  C.T.
Radiotherapy Service Technologist
Dept. Of medical Physics
Vancouver Island Cancer Centre
2410 Lee Avenue
Victoria B.C. Canada
V8R 6V5
Tel:(250) 519-5500 X-3737
Fax.(250)519-2024


> -----Original Message-----
> From: Randy.McVittie@lrcc.on.ca [mailto:Randy.McVittie@lrcc.on.= ca]
> Sent: Thursday, March 11, 2004 6:47 AM
> To: Greg MacKinnon
> Cc: LinacEng (E-mail)
> Subject: Re: Exact Counch Hand Pendant = Error
>
>
>
>
>
> If it is staying on the same side you may have = a problem with
> the connector or
> cable in the couch.
>
> Each time you turn on beam, the power to the = handcontrols is
> turned off.  When
> the beam finishes, the hand controls turn = on
> and they go through their reset cycle.  If = the Motion enable
> circuit is closed
> during initializtion the display will show = Error E.
>
> Good luck
>
> Randy McVittie
>
>
>
>
>
>
>
> "Greg MacKinnon" = <mackinnongreg@cbdha.nshealth.ca> on
> 2004-03-11 08:12:20
>
> To:   "LinacEng \(E-mail\)" = <linac-eng@plato.aristotle.net>
> cc:    (bcc: Randy = McVittie/Lrcc)
>
> Subject:  Exact Counch Hand Pendant = Error
>
>
>
> Hi Group
>
> Over the last few days we have been getting an = intermittent
> ERROR E on the
> left couch hand pendant display. It clears = after hitting ENTER several
> times. I have swap hand pendants from side to = side & with
> other units with
> no luck. Always same problem. Any suggestion on = what may be
> cause this fault
> of ERROR E.
>
> Thanks in advance.
>
> = __________________________________________
> Greg MacKinnon, C.E.T.
> Linear Accelerator Service Technologist
> Cape Breton Cancer Centre
> 1482 George Street
> Sydney, Nova Scotia, Canada
> B1P 1P3
> tel:  (902) 567-8076
> fax: (902) 567-8075
> email: mackinnongreg@cbdha.nshealth.ca
>
>
>
>
>
>

--Boundary_(ID_0TgQLpkj8mADWPv6myEn+A)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUF00HGVQE308@hubbard.azu.nl>; Fri, 12 Mar 2004 00:25:16 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004031200251404675 ; Fri, 12 Mar 2004 00:25:14 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id AAA07900; Fri, 12 Mar 2004 00:27:04 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma007864; Fri, 12 Mar 2004 00:26:35 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id PAA08038 for linac-eng-list; Thu, 11 Mar 2004 15:37:17 -0600 (CST) Received: from PHSEXCHICI2.Partners.org (phsexchici2.partners.org [170.223.254.21]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id PAA08034 for ; Thu, 11 Mar 2004 15:37:16 -0600 (CST) Received: by phsexchici2.partners.org with Internet Mail Service (5.5.2657.72) id ; Thu, 11 Mar 2004 16:36:45 -0500 Date: Thu, 11 Mar 2004 16:36:44 -0500 From: "Maddox, Buford J" Subject: RE: No output, then output, then back to no output Sender: owner-linac-eng@plato.aristotle.net To: "'SMcna39074@aol.com'" , Michael.Tirabassi@HCAHealthcare.com Cc: linac-eng@plato.aristotle.net Message-id: <36298D09ED1AD311B4DC0008C7F4D4E1114663A7@phsexch6.partners.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 11 Mar 2004 16:36:44 -0500 From: "Maddox, Buford J" Subject: RE: No output, then output, then back to no output Sender: owner-linac-eng@plato.aristotle.net To: "'SMcna39074@aol.com'" , Michael.Tirabassi@HCAHealthcare.com Cc: linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Good suggestion. Have seen this symptom many times with a bad socket. On the last one a tube pin went bad, overheated the socket, ruined spring of socket, no more grip. Looked blackened. Jerry -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of SMcna39074@aol.com Sent: Tuesday, March 09, 2004 5:01 PM To: Michael.Tirabassi@HCAHealthcare.com Cc: linac-eng@plato.aristotle.net Subject: Re: No output, then output, then back to no output Had a similar problem on a 600c. Turned out to be the main thyratron--filaments coming on and off as they thermally cycled due to internal cold joint/fracture on connections. Visually found, just watched the filament go cold to hot to cold. Stan McNally Cancer Center of Santa Barbara  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUF00MWCXVO4X@hubbard.azu.nl>; Fri, 12 Mar 2004 03:07:02 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004031203070005893 ; Fri, 12 Mar 2004 03:07:00 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id DAA27219; Fri, 12 Mar 2004 03:08:48 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma027200; Fri, 12 Mar 2004 03:08:36 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id SAA11315 for linac-eng-list; Thu, 11 Mar 2004 18:05:07 -0600 (CST) Received: from PHSXCHICI3.partners.org (phsxchici3.mgh.harvard.edu [132.183.118.13]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id SAA11311 for ; Thu, 11 Mar 2004 18:05:05 -0600 (CST) Received: by phsxchici3.mgh.harvard.edu with Internet Mail Service (5.5.2657.72) id ; Thu, 11 Mar 2004 19:04:58 -0500 Date: Thu, 11 Mar 2004 19:04:33 -0500 From: "Maddox, Buford J" Subject: RE: CTRL interlocks Sender: owner-linac-eng@plato.aristotle.net To: 'Greg MacKinnon' , John.Kaufman@providence.org Cc: "LinacEng (E-mail)" Message-id: <36298D09ED1AD311B4DC0008C7F4D4E1114663AA@phsexch6.partners.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 11 Mar 2004 19:04:33 -0500 From: "Maddox, Buford J" Subject: RE: CTRL interlocks Sender: owner-linac-eng@plato.aristotle.net To: 'Greg MacKinnon' , John.Kaufman@providence.org Cc: "LinacEng (E-mail)" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f I have had to raise the 5v ps to 5.1 to get 5 on the chips. It helps. There is also a noise suppression kit that can be installed on the PS's. On one machine changing the PS and/or raising the V, and changing the cpu seemed to fix the spurious interrupts. Not sure which fixed it. Jerry -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Greg MacKinnon Sent: Friday, March 05, 2004 5:36 AM To: John.Kaufman@providence.org Cc: LinacEng (E-mail) Subject: RE: CTRL interlocks Hi John Couple things: 1) check the EVENT log (under Major mode, Communication) to see if any thing was log, it may give you some information of what actual caused the CTRL. Post this information to the group. 2) Verify the +5V test point on the Communication CPU located at the back of the console rack is +5.03 volts. If not adjust the main +5V power supply. Other things to try are replacing the Communication and/or Control CPUs. Good Luck __________________________________________ Greg MacKinnon, C.E.T. Linear Accelerator Service Technologist Cape Breton Cancer Centre 1482 George Street Sydney, Nova Scotia, Canada B1P 1P3 tel: (902) 567-8076 fax: (902) 567-8075 email: mackinnongreg@cbdha.nshealth.ca -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of John.Kaufman@providence.org Sent: Thursday, March 04, 2004 7:13 PM To: linac-eng@plato.aristotle.net Subject: CTRL interlocks I have an unusual intermittent problem. We have a vintage 2100 (SN 359) that has been producing CTRL interlocks at very unusual times. Usually this occurs about 3 times in an average week, one of them may be at 2:30 in the morning after the machine has been in Standby for 10 hours. Sometimes it is while the therapists are at lunch. I have changed the power supply to the Dell GX110 computer in the Varian Console and installed a UPS on that particular AC input. I have also had the main power to the Clinac studied and compared that to the event log with absolutely no correlation and no solution. Any ideas. Thanks in advance for all of your contributions. John B Kaufman Senior Biomedical Technician Providence Portland Medical Center 503-215-5415 503-215-6397 DISCLAIMER: This message is intended for the sole use of the individual to whom it is addressed, and may contain information that is privileged, confidential and exempt from disclosure under applicable law. If you are not the addressee you are hereby notified that you may not use, copy, disclose, or distribute to anyone the message or any information contained in the message. If you have received this message in error, please immediately advise the sender by reply email and delete this message.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUH00ME3TJDSQ@hubbard.azu.nl>; Sat, 13 Mar 2004 03:28:26 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004031303282524019 ; Sat, 13 Mar 2004 03:28:25 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id DAA27732; Sat, 13 Mar 2004 03:30:14 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma027691; Sat, 13 Mar 2004 03:29:56 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id SAA08898 for linac-eng-list; Fri, 12 Mar 2004 18:37:37 -0600 (CST) Received: from imo-m19.mx.aol.com (imo-m19.mx.aol.com [64.12.137.11]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id SAA08894 for ; Fri, 12 Mar 2004 18:37:36 -0600 (CST) Received: from PPATNAUDE2@aol.com by imo-m19.mx.aol.com (mail_out_v37.4.) id y.1e6.1b232464 (4328) for ; Fri, 12 Mar 2004 19:37:04 -0500 (EST) Date: Fri, 12 Mar 2004 19:37:04 -0500 (EST) From: PPATNAUDE2@aol.com Subject: looking for job Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <1e6.1b232464.2d83b1b0@aol.com> MIME-version: 1.0 X-Mailer: 7.0 for Windows sub 10709 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_KPaLLGWnCHy4WM0T3N0xVg)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 12 Mar 2004 19:37:04 -0500 (EST) From: PPATNAUDE2@aol.com Subject: looking for job Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f --Boundary_(ID_KPaLLGWnCHy4WM0T3N0xVg) Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7bit i am still looking for new job just have to make sure wife like area --Boundary_(ID_KPaLLGWnCHy4WM0T3N0xVg) Content-type: text/html; charset=US-ASCII Content-transfer-encoding: quoted-printable i am still looking for=20= new job just have to make sure  wife like area --Boundary_(ID_KPaLLGWnCHy4WM0T3N0xVg)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUH00MWVV29SQ@hubbard.azu.nl>; Sat, 13 Mar 2004 04:01:24 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004031304012124165 ; Sat, 13 Mar 2004 04:01:21 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id EAA00744; Sat, 13 Mar 2004 04:03:11 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma000713; Sat, 13 Mar 2004 04:03:00 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id TAA09487 for linac-eng-list; Fri, 12 Mar 2004 19:24:53 -0600 (CST) Received: from imo-m21.mx.aol.com (imo-m21.mx.aol.com [64.12.137.2]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id TAA09483 for ; Fri, 12 Mar 2004 19:24:52 -0600 (CST) Received: from PPATNAUDE2@aol.com by imo-m21.mx.aol.com (mail_out_v37.4.) id y.158.2fd0b6e2 (4328) for ; Fri, 12 Mar 2004 20:24:17 -0500 (EST) Date: Fri, 12 Mar 2004 20:24:17 -0500 (EST) From: PPATNAUDE2@aol.com Subject: still looking Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <158.2fd0b6e2.2d83bcc1@aol.com> MIME-version: 1.0 X-Mailer: 7.0 for Windows sub 10709 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_DJqZwOXmyPaEfrtHlhc0Hg)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 12 Mar 2004 20:24:17 -0500 (EST) From: PPATNAUDE2@aol.com Subject: still looking Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f --Boundary_(ID_DJqZwOXmyPaEfrtHlhc0Hg) Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7bit What I was trying to say was I am still interested in new work. I been working straight sense November with no thank form no one. The only thing I look for is a Thank You for all the time you spend...... That mean 100hr work weeks my friend. --Boundary_(ID_DJqZwOXmyPaEfrtHlhc0Hg) Content-type: text/html; charset=US-ASCII Content-transfer-encoding: quoted-printable What I was trying to say= was I am still interested in new work. I been working straight sense Novemb= er with no thank form no one. The only thing I look for is a Thank You for a= ll the time you spend...... That mean 100hr work weeks my friend.= --Boundary_(ID_DJqZwOXmyPaEfrtHlhc0Hg)--  1,, X-Coding-System: iso-latin-1-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUH00187VT3CR@hubbard.azu.nl>; Sat, 13 Mar 2004 04:17:32 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004031304172724242 ; Sat, 13 Mar 2004 04:17:27 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id EAA02221; Sat, 13 Mar 2004 04:19:17 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma002202; Sat, 13 Mar 2004 04:19:04 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id TAA09744 for linac-eng-list; Fri, 12 Mar 2004 19:46:20 -0600 (CST) Received: from hk.sina.com.hk ([202.85.139.107]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id TAA09704 for ; Fri, 12 Mar 2004 19:44:43 -0600 (CST) Received: (qmail 19571 invoked by uid 99); Sat, 13 Mar 2004 09:36:30 +0000 Date: Sat, 13 Mar 2004 09:36:30 +0800 From: =?big5?B?ZmFpY2hpY2hhbg==?= Subject: =?big5?B?TG93IGRvc2UgcmF0ZQ==?= Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <20040313093630.19569.qmail@hk.sina.com.hk> MIME-version: 1.0 Content-type: text/plain; charset=big5 Content-disposition: inline Content-transfer-encoding: 8BIT Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Sat, 13 Mar 2004 09:36:30 +0800 From: =?big5?B?ZmFpY2hpY2hhbg==?= Subject: =?big5?B?TG93IGRvc2UgcmF0ZQ==?= Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Content-disposition: inline X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hi all: I have a 600C 7 years ago that has a problem of low dose rate even at dose servo off, e.g. set dose rate to 400, actual dose rate only around 390 at dose servo off. I have tried to replace a new magnetron and have manually tuned up AFC to get about same dose rate. What should I do to fix it? fai ========================================================================================== ¤é¤é§K¶OÀH®É¾Ç­^»y/´¶³q¸Ü - http://adimages.sina.com.hk/Lingua_0304.html ¼éÃz¤H¡A»ô¤U¸ü - ¥þ·s¤â¾÷¹CÀ¸ - http://sms.sina.com.hk/game_index.html  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUI0020ARAAAX@hubbard.azu.nl>; Sat, 13 Mar 2004 15:37:23 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004031315372229049 ; Sat, 13 Mar 2004 15:37:22 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id PAA15157; Sat, 13 Mar 2004 15:39:12 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma015140; Sat, 13 Mar 2004 15:38:53 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id HAA18002 for linac-eng-list; Sat, 13 Mar 2004 07:00:47 -0600 (CST) Received: from sqproxy.mpdoch.org (mailgate.mpdoch.org [62.49.79.242]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id HAA17998 for ; Sat, 13 Mar 2004 07:00:45 -0600 (CST) Date: Sat, 13 Mar 2004 13:00:28 +0000 From: Nicholas Norris Subject: Definition of Downtime (Uptime) Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Reply-to: nicholas.norris@mpdoch.org Message-id: <2a09e97ad07f8822acbf78501817ea8940530519@mpdoch.org> MIME-version: 1.0 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_7OBEF6Q+8MS3GMyHT87vuw)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Sat, 13 Mar 2004 13:00:28 +0000 From: Nicholas Norris Subject: Definition of Downtime (Uptime) Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Reply-to: nicholas.norris@mpdoch.org X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This is a multi-part message in MIME format. --Boundary_(ID_7OBEF6Q+8MS3GMyHT87vuw) Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 7bit I am looking for a definition of downtime (uptime) for radiotherapy machines. Is there a national agreed definition for downtime. How do different centres define it? Nicholas Norris Chief Engineer Medical Physics Department Oldchurch Hospital BHR Hospitals NHS Trust Romford Essex. RM7 0BE. Tel: 01708 506442 Fax: 01708 708485 e-mail : nicholas.norris@mpdoch.org The information contained in this message and/or any attachments(s) may be of a private and confidential nature, and is intended solely for the attention of the addressee. If you have received this message in error or feel you should not have been the intended recipient, please return it and any attachments to the sender immediately. All messages relating to this communication should then be deleted from your system. Unauthorised usage, copying, disclosure or alteration of this message and/or attachment(s) is strictly prohibited. Barking, Havering and Redbridge Hospitals NHS Trust will not be held responsible for any direct or indirect damages which may arise from alteration of this message or any attachment(s), by a third party or resulting from the transmission of a virus. --Boundary_(ID_7OBEF6Q+8MS3GMyHT87vuw) Content-type: text/html; charset=us-ascii Content-transfer-encoding: quoted-printable

I am looking for a definition of downtime = (uptime) for radiotherapy machines.

Is there a national agreed definition for = downtime.

How do different centres define = it?

 

 

 

Nicholas Norris

Chief Engineer

Medical Physics Department

Oldchurch = Hospital

BHR Hospitals NHS Trust

Romford

Essex.

RM7 0BE.

Tel: 01708 506442

Fax: 01708 708485

e-mail : nicholas.norris@mpdoch.org=

 

The information contained in this message and/or any attachments(s) may be = of a private and confidential nature, and is intended solely for the = attention of the addressee. If you have received this message in error or feel you = should not have been the intended recipient, please return it and any = attachments to the sender immediately. All messages relating to this communication = should then be deleted from your system. Unauthorised usage, copying, disclosure or alteration of this message and/or attachment(s) is strictly prohibited. Barking, Havering and Redbridge Hospitals NHS Trust will not be held responsible for any direct or indirect damages which may arise from = alteration of this message or any attachment(s), by a third party or resulting from = the transmission of a virus.

 

--Boundary_(ID_7OBEF6Q+8MS3GMyHT87vuw)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUK00BGM0NDDJ@hubbard.azu.nl>; Sun, 14 Mar 2004 07:57:14 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004031407571202595 ; Sun, 14 Mar 2004 07:57:12 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id HAA26244; Sun, 14 Mar 2004 07:59:03 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma026224; Sun, 14 Mar 2004 07:58:46 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id XAA00225 for linac-eng-list; Sat, 13 Mar 2004 23:03:36 -0600 (CST) Received: from smtp806.mail.sc5.yahoo.com (smtp806.mail.sc5.yahoo.com [66.163.168.185]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id XAA00221 for ; Sat, 13 Mar 2004 23:03:34 -0600 (CST) Received: from unknown (HELO DGrecoHomOffice) (dgreco@pacbell.net@216.103.85.50 with login) by smtp806.mail.sc5.yahoo.com with SMTP; Sun, 14 Mar 2004 05:03:32 +0000 Date: Sat, 13 Mar 2004 21:03:31 -0800 From: Domenic Greco Subject: RE: Definition of Downtime (Uptime) In-reply-to: <2a09e97ad07f8822acbf78501817ea8940530519@mpdoch.org> Sender: owner-linac-eng@plato.aristotle.net To: nicholas.norris@mpdoch.org, linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2910.0) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_9aEqtWl74q4udtv7ED2FuQ)" Importance: Normal Precedence: bulk X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 (Normal) *** EOOH *** Date: Sat, 13 Mar 2004 21:03:31 -0800 From: Domenic Greco Subject: RE: Definition of Downtime (Uptime) In-reply-to: <2a09e97ad07f8822acbf78501817ea8940530519@mpdoch.org> Sender: owner-linac-eng@plato.aristotle.net To: nicholas.norris@mpdoch.org, linac-eng@plato.aristotle.net Importance: Normal X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 (Normal) This is a multi-part message in MIME format. --Boundary_(ID_9aEqtWl74q4udtv7ED2FuQ) Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7bit Here's one definition expressed as a formula: Annual Business Hours - Annual Downtime Hours _________________________________ Annual Business Hours -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Nicholas Norris Sent: Saturday, March 13, 2004 5:00 AM To: linac-eng@plato.aristotle.net Subject: Definition of Downtime (Uptime) I am looking for a definition of downtime (uptime) for radiotherapy machines. Is there a national agreed definition for downtime. How do different centres define it? Nicholas Norris Chief Engineer Medical Physics Department Oldchurch Hospital BHR Hospitals NHS Trust Romford Essex. RM7 0BE. Tel: 01708 506442 Fax: 01708 708485 e-mail : nicholas.norris@mpdoch.org The information contained in this message and/or any attachments(s) may be of a private and confidential nature, and is intended solely for the attention of the addressee. If you have received this message in error or feel you should not have been the intended recipient, please return it and any attachments to the sender immediately. All messages relating to this communication should then be deleted from your system. Unauthorised usage, copying, disclosure or alteration of this message and/or attachment(s) is strictly prohibited. Barking, Havering and Redbridge Hospitals NHS Trust will not be held responsible for any direct or indirect damages which may arise from alteration of this message or any attachment(s), by a third party or resulting from the transmission of a virus. --Boundary_(ID_9aEqtWl74q4udtv7ED2FuQ) Content-type: text/html; charset=US-ASCII Content-transfer-encoding: quoted-printable
Here's=20 one definition expressed as a formula:
 

Annual Business Hours  – Annual Downtime = Hours

_________________________________

Annual Business = Hours

-----Original Message-----
From:=20 owner-linac-eng@plato.aristotle.net=20 [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of = Nicholas=20 Norris
Sent: Saturday, March 13, 2004 5:00 AM
To:=20 linac-eng@plato.aristotle.net
Subject: Definition of = Downtime=20 (Uptime)

I am looking for a = definition of=20 downtime (uptime) for radiotherapy machines.

Is there a national = agreed=20 definition for downtime.

How do different centres = define=20 it?

 

 

 

Nicholas = Norris

Chief = Engineer

Medical Physics=20 Department

Oldchurch Hospital

BHR Hospitals NHS=20 Trust

Romford

Essex.

RM7 = 0BE.

Tel: 01708=20 506442

Fax: 01708=20 708485

e-mail : nicholas.norris@mpdoch.org=

 

The information = contained in this=20 message and/or any attachments(s) may be of a private and confidential = nature,=20 and is intended solely for the attention of the addressee. If you have = received this message in error or feel you should not have been the = intended=20 recipient, please return it and any attachments to the sender = immediately. All=20 messages relating to this communication should then be deleted from = your=20 system. Unauthorised usage, copying, disclosure or alteration of this = message=20 and/or attachment(s) is strictly prohibited. Barking, Havering and = Redbridge=20 Hospitals NHS Trust will not be held responsible for any direct or = indirect=20 damages which may arise from alteration of this message or any = attachment(s),=20 by a third party or resulting from the transmission of a=20 virus.

 

--Boundary_(ID_9aEqtWl74q4udtv7ED2FuQ)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUL00IL05FHM7@hubbard.azu.nl>; Sun, 14 Mar 2004 22:38:07 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004031422380409862 ; Sun, 14 Mar 2004 22:38:04 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id WAA05170; Sun, 14 Mar 2004 22:39:55 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma005115; Sun, 14 Mar 2004 22:39:34 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id OAA11436 for linac-eng-list; Sun, 14 Mar 2004 14:00:42 -0600 (CST) Received: from cmailg5.svr.pol.co.uk (cmailg5.svr.pol.co.uk [195.92.195.175]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id OAA11432 for ; Sun, 14 Mar 2004 14:00:39 -0600 (CST) Received: from modem-127.barium.dialup.pol.co.uk ([62.136.47.127] helo=me2ridrzwtw7q0) by cmailg5.svr.pol.co.uk with smtp (Exim 4.14) id 1B2bmn-0000eK-VW for linac-eng@plato.aristotle.net; Sun, 14 Mar 2004 20:00:38 +0000 Date: Sun, 14 Mar 2004 20:00:39 +0000 From: Linac Tech Subject: Engineers in NZ Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2910.0) Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 7bit Importance: Normal Precedence: bulk X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 (Normal) *** EOOH *** Date: Sun, 14 Mar 2004 20:00:39 +0000 From: Linac Tech Subject: Engineers in NZ Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Importance: Normal X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 (Normal) Hi Just a couple of questions for any NZ technicians on the list. I am a medical technologist in the UK (responsible for servicing, repairs, QA etc) on Linacs and other equipment, looking to emigrate to New Zealand. What would the equivalent job title be in NZ? Are techs employed by the health boards / hospitals, or by private servicing companies? Thanks in advance for any help you can give me. Rob  1,, X-Coding-System: iso-latin-1-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUM000NF0WBB1@hubbard.azu.nl>; Mon, 15 Mar 2004 09:57:52 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004031509574615447 ; Mon, 15 Mar 2004 09:57:46 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id JAA02106; Mon, 15 Mar 2004 09:59:37 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma001698; Mon, 15 Mar 2004 09:58:16 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id BAA19089 for linac-eng-list; Mon, 15 Mar 2004 01:12:20 -0600 (CST) Received: from hk.sina.com.hk ([202.85.139.106]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id BAA19084 for ; Mon, 15 Mar 2004 01:12:14 -0600 (CST) Received: (qmail 14030 invoked by uid 99); Mon, 15 Mar 2004 15:02:39 +0000 Date: Mon, 15 Mar 2004 15:02:39 +0800 From: =?big5?B?ZmFpY2hpY2hhbg==?= Subject: =?big5?B?TG93IGRvc2UgcmF0ZQ==?= Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <20040315150239.14029.qmail@hk.sina.com.hk> MIME-version: 1.0 Content-type: text/plain; charset=big5 Content-disposition: inline Content-transfer-encoding: 8BIT Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 15 Mar 2004 15:02:39 +0800 From: =?big5?B?ZmFpY2hpY2hhbg==?= Subject: =?big5?B?TG93IGRvc2UgcmF0ZQ==?= Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Content-disposition: inline X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Thank all advices. Perform daily the PRF vs dose rate calibration in morning. The calibrated PRF logged in morning checkout log now is about 460, which is quite larger than normal PRF of a new installed Linac EX6 is 360 with range of 200 to 400. Magnetron current is running at 101. I have attemped to increase and decrease gun voltage 0.1 volt of normal value, and current of electri magnet, but it has no obvious change in dose rate. Fai ========================================================================================== ¤é¤é§K¶OÀH®É¾Ç­^»y/´¶³q¸Ü - http://adimages.sina.com.hk/Lingua_0304.html ¼éÃz¤H¡A»ô¤U¸ü - ¥þ·s¤â¾÷¹CÀ¸ - http://sms.sina.com.hk/game_index.html  1,, X-Coding-System: iso-latin-1-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUM005WR4V71B@hubbard.azu.nl>; Mon, 15 Mar 2004 11:23:49 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004031511233417561 ; Mon, 15 Mar 2004 11:23:34 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id LAA26708; Mon, 15 Mar 2004 11:25:26 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma026508; Mon, 15 Mar 2004 11:24:34 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id CAA19878 for linac-eng-list; Mon, 15 Mar 2004 02:56:47 -0600 (CST) Received: from mail21.nhs.uk (mail21.nhs.uk [62.6.139.215]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id CAA19874 for ; Mon, 15 Mar 2004 02:56:46 -0600 (CST) Received: from [10.191.254.3] (helo=relayint2.nhs.uk) by mail21.nhs.uk with esmtp (MTC MTA) id 1B2ntP-0007fC-Cm for linac-eng@plato.aristotle.net; Mon, 15 Mar 2004 08:56:15 +0000 Received: from relay.nhs.uk (194.62.42.142) by relayint2.nhs.uk (Syntegra-I2 7.0.008) id 4039DF7100559BFE for linac-eng@plato.aristotle.net; Mon, 15 Mar 2004 08:56:10 +0000 Received: from beijing.relay.grampian.scot.nhs.uk (10.251.30.7) by relay.nhs.uk (Syntegra-2 7.0.008) (authenticated as relay_grampian_scot_nhs_uk@es2002.nhs.uk) id 4051C106000B9EE0 for linac-eng@plato.aristotle.net; Mon, 15 Mar 2004 08:56:10 +0000 Received: from mail pickup service by beijing.relay.grampian.scot.nhs.uk with Microsoft SMTPSVC; Mon, 15 Mar 2004 08:53:24 +0000 Received: from relay.nhs.uk ([194.62.42.123]) by beijing.relay.grampian.scot.nhs.uk with Microsoft SMTPSVC(5.0.2195.6713) ; Mon, 15 Mar 2004 08:35:23 +0000 Received: from mail13.nhs.uk (62.6.139.209) by relay.nhs.uk (Syntegra-2 7.0.008) id 4051C106000B74A6; Mon, 15 Mar 2004 08:37:31 +0000 Received: from plato.aristotle.net ([206.66.224.2]) by mail13.nhs.uk with esmtp (MTC MTA) id 1B2nbH-0002ds-C5; Mon, 15 Mar 2004 08:37:31 +0000 Received: by plato.aristotle.net (8.9.0/8.9.0) id BAA19089 for linac-eng-list; Mon, 15 Mar 2004 01:12:20 -0600 (CST) Received: from hk.sina.com.hk ([202.85.139.106]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id BAA19084 for ; Mon, 15 Mar 2004 01:12:14 -0600 (CST) Received: (qmail 14030 invoked by uid 99); Mon, 15 Mar 2004 15:02:39 +0000 Date: Mon, 15 Mar 2004 15:02:39 +0800 From: faichichan Subject: Low dose rate [Scanned By SOPHOS Anti-Virus] Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <20040315150239.14029.qmail@hk.sina.com.hk> MIME-version: 1.0 Content-type: Text/Plain; charset=ISO-8859-4 Content-transfer-encoding: 8BIT Importance: normal Precedence: bulk thread-index: AcQKaHWuaququVrYR3C1NnvEjQIDSg== Content-Class: urn:content-classes:message X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4927.1200 X-OriginalArrivalTime: 15 Mar 2004 08:35:23.0984 (UTC) FILETIME=[75A4FD00:01C40A68] X-MIME-Autoconverted: from Quoted-Printable to 8bit by plato.aristotle.net id CAA19875 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 15 Mar 2004 15:02:39 +0800 From: faichichan Subject: Low dose rate [Scanned By SOPHOS Anti-Virus] Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Importance: normal thread-index: AcQKaHWuaququVrYR3C1NnvEjQIDSg== Content-Class: urn:content-classes:message X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4927.1200 X-OriginalArrivalTime: 15 Mar 2004 08:35:23.0984 (UTC) FILETIME=[75A4FD00:01C40A68] X-MIME-Autoconverted: from Quoted-Printable to 8bit by plato.aristotle.net id CAA19875 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Thank all advices. Perform daily the PRF vs dose rate calibration in morning. The calibrated PRF logged in morning checkout log now is about 460, which is quite larger than normal PRF of a new installed Linac EX6 is 360 with range of 200 to 400. Magnetron current is running at 101. I have attemped to increase and decrease gun voltage 0.1 volt of normal value, and current of electri magnet, but it has no obvious change in dose rate. Fai ========================================================================== ================ ¤é¤é§K¶OÀH®É¾Ç­^»y/´¶³q¸Ü - http://adimages.sina.com.hk/Lingua_0304.html ¼éÃz¤H¡A»ô¤U¸ü - ¥þ·s¤â¾÷¹CÀ¸ - http://sms.sina.com.hk/game_index.html  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUM009SQ7POPY@hubbard.azu.nl>; Mon, 15 Mar 2004 12:25:09 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004031512250718930 ; Mon, 15 Mar 2004 12:25:07 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id MAA14604; Mon, 15 Mar 2004 12:26:59 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma014513; Mon, 15 Mar 2004 12:26:20 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id DAA21174 for linac-eng-list; Mon, 15 Mar 2004 03:45:37 -0600 (CST) Received: from mail20.nhs.uk (mail20.nhs.uk [62.6.139.212]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id DAA21170 for ; Mon, 15 Mar 2004 03:45:35 -0600 (CST) Received: from [10.191.254.3] (helo=relayint2.nhs.uk) by mail20.nhs.uk with esmtp (MTC MTA) id 1B2oee-0006Qo-IO for linac-eng@plato.aristotle.net; Mon, 15 Mar 2004 09:45:04 +0000 Received: from relay.nhs.uk (194.62.42.141) by relayint2.nhs.uk (Syntegra-I2 7.0.008) id 4039DF7100561261 for linac-eng@plato.aristotle.net; Mon, 15 Mar 2004 09:45:04 +0000 Received: from mercury.University-b.wmids.nhs.uk (193.240.116.176) by relay.nhs.uk (Syntegra-1 7.0.008) (authenticated as smtp_uhb_nhs_uk@es2002.nhs.uk) id 405576A900003EB8; Mon, 15 Mar 2004 09:45:04 +0000 Received: by MERCURY with Internet Mail Service (5.5.2653.19) id ; Mon, 15 Mar 2004 09:45:03 +0000 Date: Mon, 15 Mar 2004 09:42:54 +0000 From: Graham Chalmers Subject: RE: Definition of Downtime (Uptime) Sender: owner-linac-eng@plato.aristotle.net To: "'nicholas.norris@mpdoch.org'" , linac-eng@plato.aristotle.net Message-id: <71A7A8BA33E3D511AF5E00034797029B105353F3@HERMES> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_COZs8Z36rA+WkPv/Vo9Vcg)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 15 Mar 2004 09:42:54 +0000 From: Graham Chalmers Subject: RE: Definition of Downtime (Uptime) Sender: owner-linac-eng@plato.aristotle.net To: "'nicholas.norris@mpdoch.org'" , linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_COZs8Z36rA+WkPv/Vo9Vcg) Content-type: text/plain; CHARSET=US-ASCII Dear Nicholas This has been a perpetual issue. I would suggest you need to determine what you want downtime figures for. If you have units under contracts you will have the manufacturer's definitions. The difficulty I have with downtimes is that a downtime value may be determined by either the reliability of the equipment, parts availability, efficiency of a manufacturer to supply and fit replacement parts, efficiency of in-house maintenance team and a global figure may not fully suffice. Nevertheless most of us don't have the time to do detailed analysis as the time spent may outweigh the gain (if any) especially if the downtimes are generally good. I calculate the availability here in the following way:- Available hours for clinical use /month = [ Working hours /month (e.g. Mon-Fri 7.45 hours/day) - planned QC and Maintenance hours ] So % availability = (available hours - downtime) / available hours Anything that is negotiated e.g. time to repair, change parts is not counted as downtime as no clinical slots are lost, likewise loss of overall power to the department With best wishes Graham Chalmers Graham Chalmers Radiotherapy Physics University Hospital Birmingham NHS Trust Birmingham B15 2TH 0121-627-2266 DISCLAIMER: This e-mail contains proprietary information some or all of which may be confidential or legally privileged. It is for the exclusive use of the intended recipient(s) only. If an addressing or transmission error has misdirected this e-mail and you are not the intended recipient(s), please notify the author by replying to this e-mail. If you are not the intended recipient you must not use, disclose, distribute, copy, print, or rely on this e-mail, as this may be unlawful. -----Original Message----- From: Nicholas Norris [mailto:nnorris@mpdoch.org] Sent: 13 March 2004 13:00 To: linac-eng@plato.aristotle.net Subject: Definition of Downtime (Uptime) I am looking for a definition of downtime (uptime) for radiotherapy machines. Is there a national agreed definition for downtime. How do different centres define it? Nicholas Norris Chief Engineer Medical Physics Department Oldchurch Hospital BHR Hospitals NHS Trust Romford Essex. RM7 0BE. Tel: 01708 506442 Fax: 01708 708485 e-mail : nicholas.norris@mpdoch.org The information contained in this message and/or any attachments(s) may be of a private and confidential nature, and is intended solely for the attention of the addressee. If you have received this message in error or feel you should not have been the intended recipient, please return it and any attachments to the sender immediately. All messages relating to this communication should then be deleted from your system. Unauthorised usage, copying, disclosure or alteration of this message and/or attachment(s) is strictly prohibited. Barking, Havering and Redbridge Hospitals NHS Trust will not be held responsible for any direct or indirect damages which may arise from alteration of this message or any attachment(s), by a third party or resulting from the transmission of a virus. DISCLAIMER: This e-mail contains proprietary information some or all of which may be confidential or legally privileged. It is for the exclusive use of the intended recipient(s) only. If an addressing or transmission error has misdirected this e-mail and you are not the intended recipient(s), please notify the author by replying to this e-mail. If you are not the intended recipient you must not use, disclose, distribute, copy, print, or rely on this e-mail, as this may be unlawful. --Boundary_(ID_COZs8Z36rA+WkPv/Vo9Vcg) Content-type: text/html

Dear Nicholas

 

This has been a perpetual issue. I would suggest you need to determine what you want downtime figures for. If you have units under contracts you will have the manufacturer's definitions.

 

The difficulty I have with downtimes is that a downtime value may be determined by either the reliability of the equipment, parts availability, efficiency of a manufacturer to supply and fit replacement parts, efficiency of in-house maintenance team and a global figure may not fully suffice. Nevertheless most of us don't have the time to do detailed analysis as the time spent may outweigh the gain (if any) especially if the downtimes are generally good.

 

I calculate the availability here in the following way:-

 

Available hours for clinical use /month  = [ Working hours /month (e.g. Mon-Fri 7.45 hours/day) - planned QC and Maintenance hours ]

 

So % availability = (available hours - downtime) / available hours

 

Anything that is negotiated e.g. time to repair, change parts is not counted as downtime as no clinical slots are lost, likewise loss of overall power to the department

 

 

With best wishes

 

Graham Chalmers

 

 

Graham Chalmers 

Radiotherapy Physics

University Hospital Birmingham NHS Trust

Birmingham B15 2TH

0121-627-2266

 

 

 

 

DISCLAIMER: This e-mail contains proprietary information some or all of which may be confidential or legally privileged. It is for the exclusive use of the intended recipient(s) only. If an addressing or transmission error has misdirected this e-mail and you are not the intended recipient(s), please notify the author by replying to this e-mail. If you are not the intended recipient you must not use, disclose, distribute, copy, print, or rely on this e-mail, as this may be unlawful.

-----Original Message-----
From: Nicholas Norris [mailto:nnorris@mpdoch.org]
Sent: 13 March 2004 13:00
To: linac-eng@plato.aristotle.net
Subject: Definition of Downtime (Uptime)

 

I am looking for a definition of downtime (uptime) for radiotherapy machines.

Is there a national agreed definition for downtime.

How do different centres define it?

 

 

 

Nicholas Norris

Chief Engineer

Medical Physics Department

Oldchurch Hospital

BHR Hospitals NHS Trust

Romford

Essex.

RM7 0BE.

Tel: 01708 506442

Fax: 01708 708485

e-mail : nicholas.norris@mpdoch.org

 

The information contained in this message and/or any attachments(s) may be of a private and confidential nature, and is intended solely for the attention of the addressee. If you have received this message in error or feel you should not have been the intended recipient, please return it and any attachments to the sender immediately. All messages relating to this communication should then be deleted from your system. Unauthorised usage, copying, disclosure or alteration of this message and/or attachment(s) is strictly prohibited. Barking, Havering and Redbridge Hospitals NHS Trust will not be held responsible for any direct or indirect damages which may arise from alteration of this message or any attachment(s), by a third party or resulting from the transmission of a virus.

 

DISCLAIMER: This e-mail contains proprietary information some or all of which may be confidential or legally privileged. It is for the exclusive use of the intended recipient(s) only. If an addressing or transmission error has misdirected this e-mail and you are not the intended recipient(s), please notify the author by replying to this e-mail. If you are not the intended recipient you must not use, disclose, distribute, copy, print, or rely on this e-mail, as this may be unlawful.

--Boundary_(ID_COZs8Z36rA+WkPv/Vo9Vcg)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUM007J0L2TX4@hubbard.azu.nl>; Mon, 15 Mar 2004 17:14:04 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004031517140125701 ; Mon, 15 Mar 2004 17:14:01 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id RAA04937; Mon, 15 Mar 2004 17:15:53 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma004783; Mon, 15 Mar 2004 17:15:22 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id IAA25010 for linac-eng-list; Mon, 15 Mar 2004 08:26:29 -0600 (CST) Received: from email.med.yale.edu (email.med.yale.edu [130.132.232.16]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id IAA25006 for ; Mon, 15 Mar 2004 08:26:28 -0600 (CST) Received: from yale.edu (vitalip.med.yale.edu [130.132.213.170]) by email.med.yale.edu (PMDF V6.1-1 #30873) with ESMTP id <0HUM0GD6VG3LVB@email.med.yale.edu> for linac-eng@plato.aristotle.net; Mon, 15 Mar 2004 09:26:09 -0500 (EST) Date: Mon, 15 Mar 2004 09:26:24 -0500 From: Peter Vitali Subject: Re: Definition of Downtime (Uptime) Sender: owner-linac-eng@plato.aristotle.net To: nicholas.norris@mpdoch.org Cc: linac-eng@plato.aristotle.net Message-id: <4055BD00.2E4DB445@yale.edu> MIME-version: 1.0 X-Mailer: Mozilla 4.76 (Macintosh; U; PPC) Content-type: text/plain; charset=us-ascii; x-mac-type=54455854; x-mac-creator=4D4F5353 Content-transfer-encoding: 7bit Precedence: bulk X-Accept-Language: en References: <2a09e97ad07f8822acbf78501817ea8940530519@mpdoch.org> X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 15 Mar 2004 09:26:24 -0500 From: Peter Vitali Subject: Re: Definition of Downtime (Uptime) Sender: owner-linac-eng@plato.aristotle.net To: nicholas.norris@mpdoch.org Cc: linac-eng@plato.aristotle.net X-Accept-Language: en X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Nicholas: We define down time as the time we cannot treat a patient due to the machine being inoperable for any reason. This includes the time it takes to get parts, time for service to respond and the actual time to repair it as long as it contributes to us not being able to treat a patient. This time does not include any time when the machine would normally be off: overnight, weekends etc. In other words, the amount of time that we are loosing revenue because we cannot treat. Domenic Greco's formula also includes "Annual Business Hours". Pete Vitali  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUM008ECL4D0B@hubbard.azu.nl>; Mon, 15 Mar 2004 17:15:00 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004031517145725719 ; Mon, 15 Mar 2004 17:14:57 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id RAA05153; Mon, 15 Mar 2004 17:16:48 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma004991; Mon, 15 Mar 2004 17:16:17 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id IAA25015 for linac-eng-list; Mon, 15 Mar 2004 08:26:48 -0600 (CST) Received: from mail.tju.edu (fw-tr16.tju.edu [147.140.233.16]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id IAA25011 for ; Mon, 15 Mar 2004 08:26:46 -0600 (CST) Received: from hpmail1.tju.edu by mail.tju.edu with ESMTP; Mon, 15 Mar 2004 09:26:02 -0500 Received: from localhost (openmail@localhost) by hpmail1.tju.edu (8.9.3 (PHNE_24419)/8.9.3) with ESMTP id JAA20021; Mon, 15 Mar 2004 09:26:01 -0500 (EST) Date: Mon, 15 Mar 2004 09:26:01 -0500 From: Frank Spitz Subject: Definition of Downtime (Uptime) In-reply-to: <2a09e97ad07f8822acbf78501817ea8940530519@mpdoch.org> Sender: owner-linac-eng@plato.aristotle.net To: nnorris@mpdoch.org Cc: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 Content-type: text/plain; charset=US-ASCII Content-disposition: inline; Modification-Date="Mon, 15 Mar 2004 09:26:01 -0500"; Creation-Date="Mon, 15 Mar 2004 09:24:38 -0500" Content-transfer-encoding: 7bit Precedence: bulk X-OpenMail-Hops: 1 X-Bad-Content-Type: text/plain; charset=US-ASCII X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 15 Mar 2004 09:26:01 -0500 From: Frank Spitz Subject: Definition of Downtime (Uptime) In-reply-to: <2a09e97ad07f8822acbf78501817ea8940530519@mpdoch.org> Sender: owner-linac-eng@plato.aristotle.net To: nnorris@mpdoch.org Cc: linac-eng@plato.aristotle.net Content-disposition: inline; Modification-Date="Mon, 15 Mar 2004 09:26:01 -0500"; Creation-Date="Mon, 15 Mar 2004 09:24:38 -0500" X-OpenMail-Hops: 1 X-Bad-Content-Type: text/plain; charset=US-ASCII X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hello Nicholas, I define Downtime as the time the machine was not available for scheduled treatments. In other words if a patient's treatment was scheduled on the accelerator and the accelerator was not available due to equipment failure then the machine is down. Scheduled maintenance (PMI, Upgrades, Scheduled Physics QA etc) is not considered downtime. Intermittent faults, which require some operator workaround (Such as reloading the beam, changing energies, sticky pendent thumbwheels), can also be considered as downtime. The problem of course is accurately tracking these small increments. Should there be only one or two a day they may point to required maintenance but will not contribute significantly to downtime. If on the other hand an intermittent recurring fault resolved by some operator action are more frequent they may and up to several minutes a day. In one month three minutes per day would add up to 1 hour a month. One hour could be as much as 0.65% Downtime based on 8 hrs per day twenty days a month (1hr./160 hrs). The problem of course is accurately collecting this data. Many of these faults may not be captured or easily extracted from the machine fault logs. Depending on the therapist to record faults is not always possible since they usually are multitasking on several other concurrent activities. Obviously you may want to apply some time threshold before you bother adding small cumulative errors. Here is where you have to use your judgement considering the type of recurring fault, the frequency of the fault, the time to clear the fault. Generally you know when you should start including these faults by the frequency of recurring complaints from the therapists. Some institutions do not bother to record faults as Downtime until they pas some threshold 15 minutes time, or the need to remove the patient from the treatment table. To try and be more positive I generally refer to the machines availability (100%- Downtime) rather then Downtime. Hope this helps. Frank Spitz Clinical Engineer Thomas Jefferson University Hospital Philadelphia PA 215 955 5993  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUM00CAMQ0JJB@hubbard.azu.nl>; Mon, 15 Mar 2004 19:00:30 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004031519002627332 ; Mon, 15 Mar 2004 19:00:26 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA24673; Mon, 15 Mar 2004 19:02:18 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma024578; Mon, 15 Mar 2004 19:01:53 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id KAA27875 for linac-eng-list; Mon, 15 Mar 2004 10:19:51 -0600 (CST) Received: from mail20.nhs.uk (mail20.nhs.uk [62.6.139.212]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id KAA27871 for ; Mon, 15 Mar 2004 10:19:50 -0600 (CST) Received: from [10.191.254.3] (helo=relayint2.nhs.uk) by mail20.nhs.uk with esmtp (MTC MTA) id 1B2uoB-0000dn-U5 for linac-eng@plato.aristotle.net; Mon, 15 Mar 2004 16:19:19 +0000 Received: from relay.nhs.uk (194.62.42.142) by relayint2.nhs.uk (Syntegra-I2 7.0.008) id 4039DF7100598667 for linac-eng@plato.aristotle.net; Mon, 15 Mar 2004 16:19:19 +0000 Received: from beijing.relay.grampian.scot.nhs.uk (10.251.30.7) by relay.nhs.uk (Syntegra-2 7.0.008) (authenticated as relay_grampian_scot_nhs_uk@es2002.nhs.uk) id 405577060004ABF4; Mon, 15 Mar 2004 16:19:19 +0000 Received: from mail pickup service by beijing.relay.grampian.scot.nhs.uk with Microsoft SMTPSVC; Mon, 15 Mar 2004 16:14:14 +0000 Received: from relay.nhs.uk ([194.62.42.123]) by beijing.relay.grampian.scot.nhs.uk with Microsoft SMTPSVC(5.0.2195.6713) ; Mon, 15 Mar 2004 16:02:01 +0000 Received: from mail12.nhs.uk (62.6.139.206) by relay.nhs.uk (Syntegra-2 7.0.008) id 4055770600048992; Mon, 15 Mar 2004 16:04:08 +0000 Received: from plato.aristotle.net ([206.66.224.2]) by mail12.nhs.uk with esmtp (MTC MTA) id 1B2uZU-0002X7-Ey; Mon, 15 Mar 2004 16:04:08 +0000 Received: by plato.aristotle.net (8.9.0/8.9.0) id IAA25010 for linac-eng-list; Mon, 15 Mar 2004 08:26:29 -0600 (CST) Received: from email.med.yale.edu (email.med.yale.edu [130.132.232.16]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id IAA25006 for ; Mon, 15 Mar 2004 08:26:28 -0600 (CST) Received: from yale.edu (vitalip.med.yale.edu [130.132.213.170]) by email.med.yale.edu (PMDF V6.1-1 #30873) with ESMTP id <0HUM0GD6VG3LVB@email.med.yale.edu> for linac-eng@plato.aristotle.net; Mon, 15 Mar 2004 09:26:09 -0500 (EST) Date: Mon, 15 Mar 2004 09:26:24 -0500 From: Peter Vitali Subject: Re: Definition of Downtime (Uptime) [Scanned By SOPHOS Anti-Virus] Sender: owner-linac-eng@plato.aristotle.net To: nicholas.norris@mpdoch.org Cc: linac-eng@plato.aristotle.net Message-id: <4055BD00.2E4DB445@yale.edu> MIME-version: 1.0 X-Mailer: Mozilla 4.76 (Macintosh; U; PPC) Content-type: text/plain; x-mac-creator=4D4F5353; x-mac-type=54455854; charset=us-ascii Content-transfer-encoding: 7bit Importance: normal Precedence: bulk Thread-Index: AcQKptqloy2WlrTLQoezwvcHOmAiRA== content-class: urn:content-classes:message X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4927.1200 X-Accept-Language: en X-OriginalArrivalTime: 15 Mar 2004 16:02:02.0156 (UTC) FILETIME=[DA9986C0:01C40AA6] References: <2a09e97ad07f8822acbf78501817ea8940530519@mpdoch.org> X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 15 Mar 2004 09:26:24 -0500 From: Peter Vitali Subject: Re: Definition of Downtime (Uptime) [Scanned By SOPHOS Anti-Virus] Sender: owner-linac-eng@plato.aristotle.net To: nicholas.norris@mpdoch.org Cc: linac-eng@plato.aristotle.net Importance: normal Thread-Index: AcQKptqloy2WlrTLQoezwvcHOmAiRA== content-class: urn:content-classes:message X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4927.1200 X-Accept-Language: en X-OriginalArrivalTime: 15 Mar 2004 16:02:02.0156 (UTC) FILETIME=[DA9986C0:01C40AA6] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Nicholas: We define down time as the time we cannot treat a patient due to the machine being inoperable for any reason. This includes the time it takes to get parts, time for service to respond and the actual time to repair it as long as it contributes to us not being able to treat a patient. This time does not include any time when the machine would normally be off: overnight, weekends etc. In other words, the amount of time that we are loosing revenue because we cannot treat. Domenic Greco's formula also includes "Annual Business Hours". Pete Vitali  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUM00CEXQ8LJB@hubbard.azu.nl>; Mon, 15 Mar 2004 19:05:10 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004031519050827378 ; Mon, 15 Mar 2004 19:05:08 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA25365; Mon, 15 Mar 2004 19:07:00 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma025314; Mon, 15 Mar 2004 19:06:27 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id JAA27447 for linac-eng-list; Mon, 15 Mar 2004 09:55:54 -0600 (CST) Received: from mail20.nhs.uk (mail20.nhs.uk [62.6.139.212]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id JAA27443 for ; Mon, 15 Mar 2004 09:55:52 -0600 (CST) Received: from [10.191.254.3] (helo=relayint1.nhs.uk) by mail20.nhs.uk with esmtp (MTC MTA) id 1B2uQz-0003uV-RF for linac-eng@plato.aristotle.net; Mon, 15 Mar 2004 15:55:21 +0000 Received: from relay.nhs.uk (194.62.42.143) by relayint1.nhs.uk (Syntegra-I1 7.0.008) id 4039DF37004FD12C for linac-eng@plato.aristotle.net; Mon, 15 Mar 2004 15:55:21 +0000 Received: from smtp.koc.mtw-tr.nhs.uk (212.196.163.36) by relay.nhs.uk (Syntegra-3 7.0.008) id 4055776200049DEA; Mon, 15 Mar 2004 15:55:21 +0000 Received: from ns2.onc.koc.mtw-tr.nhs.uk (pat.koc.mtw-tr.nhs.uk [192.168.1.253]) by smtp.koc.mtw-tr.nhs.uk (8.11.6/8.11.6) with ESMTP id i2FFsin06785; Mon, 15 Mar 2004 15:54:44 +0000 (GMT) Received: from ws135 (ws135.onc.koc.mtw-tr.nhs.uk [192.168.2.163]) by ns2.onc.koc.mtw-tr.nhs.uk (8.11.6/8.11.6) with SMTP id i2FFtKJ07242; Mon, 15 Mar 2004 15:55:20 +0000 (GMT) Date: Mon, 15 Mar 2004 15:55:11 +0000 From: David Fenn Subject: RE: Definition of Downtime (Uptime) In-reply-to: <2a09e97ad07f8822acbf78501817ea8940530519@mpdoch.org> Sender: owner-linac-eng@plato.aristotle.net To: nicholas.norris@mpdoch.org, linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2911.0) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_6oWZrNEsYta5fCoDx3RRrQ)" Importance: Normal Precedence: bulk X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 (Normal) *** EOOH *** Date: Mon, 15 Mar 2004 15:55:11 +0000 From: David Fenn Subject: RE: Definition of Downtime (Uptime) In-reply-to: <2a09e97ad07f8822acbf78501817ea8940530519@mpdoch.org> Sender: owner-linac-eng@plato.aristotle.net To: nicholas.norris@mpdoch.org, linac-eng@plato.aristotle.net Importance: Normal X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 (Normal) This is a multi-part message in MIME format. --Boundary_(ID_6oWZrNEsYta5fCoDx3RRrQ) Content-type: text/plain; charset=Windows-1252 Content-transfer-encoding: 7bit Ha ha! This is deja vu for me! When I worked at Philips and we had just launched the SL series accelerators, we needed to measure the downtime on a world wide basis. This was back in the mid 80's!! I established a definition with my then customers who, although not all were happy with it, realised that we had to try to have some degree of commonality to be able to compare site with site. At the time I had about 80 customers giving me regular monthly feedback which was used to highlight specific problems and improve the reliability of the machines. The definition we agreed on was to state the number of expected hours the machine was supposed to work (for treatment or Physics work). This was called the availability time. The downtime was any unplanned lost time during this availability time window. Any planned upgrade or maintenance was taken off the availability time and not added to the downtime. I am using the same system here at Maidstone where we typically have an availability time of 180 hours per month (assuming 8hrs per day over 22 days). I attended an IPEM meeting some 2 years ago where we were told a SIG group was trying to define downtime. As yet, I believe, they have not succeeded. I offered them them my services in this task, but to date they have not shown the slightest interest in my help. I wonder why?!! -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Nicholas Norris Sent: 13 March 2004 13:00 To: linac-eng@plato.aristotle.net Subject: Definition of Downtime (Uptime) I am looking for a definition of downtime (uptime) for radiotherapy machines. Is there a national agreed definition for downtime. How do different centres define it? Nicholas Norris Chief Engineer Medical Physics Department Oldchurch Hospital BHR Hospitals NHS Trust Romford Essex. RM7 0BE. Tel: 01708 506442 Fax: 01708 708485 e-mail : nicholas.norris@mpdoch.org The information contained in this message and/or any attachments(s) may be of a private and confidential nature, and is intended solely for the attention of the addressee. If you have received this message in error or feel you should not have been the intended recipient, please return it and any attachments to the sender immediately. All messages relating to this communication should then be deleted from your system. Unauthorised usage, copying, disclosure or alteration of this message and/or attachment(s) is strictly prohibited. Barking, Havering and Redbridge Hospitals NHS Trust will not be held responsible for any direct or indirect damages which may arise from alteration of this message or any attachment(s), by a third party or resulting from the transmission of a virus. --Boundary_(ID_6oWZrNEsYta5fCoDx3RRrQ) Content-type: text/html; charset=Windows-1252 Content-transfer-encoding: quoted-printable
Ha ha!=20 This is deja vu for me! When I worked at Philips and we had just = launched the SL=20 series accelerators, we needed to measure the downtime on a world wide = basis.=20 This was back in the mid 80's!!
I=20 established a definition with my then customers who, although not all = were happy=20 with it, realised that we had to try to have some degree of commonality = to be=20 able to compare site with site. At the time I had about 80 customers = giving me=20 regular monthly feedback which was used to highlight specific problems = and=20 improve the reliability of the machines.
The=20 definition we agreed on was to state the number of expected hours = the=20 machine was supposed to work (for treatment or Physics work). This was = called=20 the availability time. The downtime was any unplanned lost time during = this=20 availability time window. Any planned upgrade or maintenance was taken = off the=20 availability time and not added to the downtime.
I am=20 using the same system here at Maidstone where we typically have an = availability=20 time of 180 hours per month (assuming 8hrs per day over 22=20 days).
I=20 attended an IPEM meeting some 2 years ago where we were told a SIG group = was=20 trying to define downtime. As yet, I believe, they have not succeeded. I = offered=20 them them my services in this task, but to=20 date they have not shown the slightest interest in my help. I = wonder=20 why?!!
-----Original Message-----
From:=20 owner-linac-eng@plato.aristotle.net=20 [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of = Nicholas=20 Norris
Sent: 13 March 2004 13:00
To:=20 linac-eng@plato.aristotle.net
Subject: Definition of = Downtime=20 (Uptime)

I am looking for a = definition of=20 downtime (uptime) for radiotherapy machines.

Is there a national = agreed=20 definition for downtime.

How do different centres = define=20 it?

 

 

 

Nicholas = Norris

Chief = Engineer

Medical Physics=20 Department

Oldchurch Hospital

BHR Hospitals NHS=20 Trust

Romford

Essex.

RM7 = 0BE.

Tel: 01708=20 506442

Fax: 01708=20 708485

e-mail : nicholas.norris@mpdoch.org=

 

The information = contained in this=20 message and/or any attachments(s) may be of a private and confidential = nature,=20 and is intended solely for the attention of the addressee. If you have = received this message in error or feel you should not have been the = intended=20 recipient, please return it and any attachments to the sender = immediately. All=20 messages relating to this communication should then be deleted from = your=20 system. Unauthorised usage, copying, disclosure or alteration of this = message=20 and/or attachment(s) is strictly prohibited. Barking, Havering and = Redbridge=20 Hospitals NHS Trust will not be held responsible for any direct or = indirect=20 damages which may arise from alteration of this message or any = attachment(s),=20 by a third party or resulting from the transmission of a=20 virus.

 

--Boundary_(ID_6oWZrNEsYta5fCoDx3RRrQ)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUM00CK4Q8ME0@hubbard.azu.nl>; Mon, 15 Mar 2004 19:05:17 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004031519051427383 ; Mon, 15 Mar 2004 19:05:14 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA25402; Mon, 15 Mar 2004 19:07:05 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma025332; Mon, 15 Mar 2004 19:06:28 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id KAA27814 for linac-eng-list; Mon, 15 Mar 2004 10:15:44 -0600 (CST) Received: from mail23.nhs.uk (mail23.nhs.uk [62.6.139.221]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id KAA27810 for ; Mon, 15 Mar 2004 10:15:42 -0600 (CST) Received: from [10.191.254.3] (helo=relayint1.nhs.uk) by mail23.nhs.uk with esmtp (MTC MTA) id 1B2ukB-0000UU-Jv for linac-eng@plato.aristotle.net; Mon, 15 Mar 2004 16:15:11 +0000 Received: from relay.nhs.uk (194.62.42.143) by relayint1.nhs.uk (Syntegra-I1 7.0.008) id 4039DF37004FFA23 for linac-eng@plato.aristotle.net; Mon, 15 Mar 2004 16:15:11 +0000 Received: from beijing.relay.grampian.scot.nhs.uk (10.251.30.7) by relay.nhs.uk (Syntegra-3 7.0.008) (authenticated as relay_grampian_scot_nhs_uk@es2002.nhs.uk) id 405577620004E430; Mon, 15 Mar 2004 16:15:10 +0000 Received: from mail pickup service by beijing.relay.grampian.scot.nhs.uk with Microsoft SMTPSVC; Mon, 15 Mar 2004 16:12:24 +0000 Received: from relay.nhs.uk ([194.62.42.123]) by beijing.relay.grampian.scot.nhs.uk with Microsoft SMTPSVC(5.0.2195.6713) ; Mon, 15 Mar 2004 16:04:15 +0000 Received: from mail13.nhs.uk (62.6.139.209) by relay.nhs.uk (Syntegra-4 7.0.008) id 405577BE0004C6EE; Mon, 15 Mar 2004 16:06:21 +0000 Received: from plato.aristotle.net ([206.66.224.2]) by mail13.nhs.uk with esmtp (MTC MTA) id 1B2ubd-0002Gn-9A; Mon, 15 Mar 2004 16:06:21 +0000 Received: by plato.aristotle.net (8.9.0/8.9.0) id IAA25015 for linac-eng-list; Mon, 15 Mar 2004 08:26:48 -0600 (CST) Received: from mail.tju.edu (fw-tr16.tju.edu [147.140.233.16]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id IAA25011 for ; Mon, 15 Mar 2004 08:26:46 -0600 (CST) Received: from hpmail1.tju.edu by mail.tju.edu with ESMTP; Mon, 15 Mar 2004 09:26:02 -0500 Received: from localhost (openmail@localhost) by hpmail1.tju.edu (8.9.3 (PHNE_24419)/8.9.3) with ESMTP id JAA20021; Mon, 15 Mar 2004 09:26:01 -0500 (EST) Date: Mon, 15 Mar 2004 09:26:01 -0500 From: Frank Spitz Subject: Definition of Downtime (Uptime) [Scanned By SOPHOS Anti-Virus] In-reply-to: <2a09e97ad07f8822acbf78501817ea8940530519@mpdoch.org> Sender: owner-linac-eng@plato.aristotle.net To: nnorris@mpdoch.org Cc: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 Content-type: text/plain; charset=US-ASCII Content-disposition: inline; Modification-Date=Mon15Mar2004092601-0500; Creation-Date=Mon15Mar2004092438-0500 Content-transfer-encoding: 7bit Importance: normal Precedence: bulk Thread-Index: AcQKpypZJufTRkLoTkSopeBAuG0Qng== content-class: urn:content-classes:message X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4927.1200 X-OpenMail-Hops: 1 X-Bad-Content-Type: text/plain; charset=US-ASCII X-OriginalArrivalTime: 15 Mar 2004 16:04:15.0890 (UTC) FILETIME=[2A4FB720:01C40AA7] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 15 Mar 2004 09:26:01 -0500 From: Frank Spitz Subject: Definition of Downtime (Uptime) [Scanned By SOPHOS Anti-Virus] In-reply-to: <2a09e97ad07f8822acbf78501817ea8940530519@mpdoch.org> Sender: owner-linac-eng@plato.aristotle.net To: nnorris@mpdoch.org Cc: linac-eng@plato.aristotle.net Content-disposition: inline; Modification-Date=Mon15Mar2004092601-0500; Creation-Date=Mon15Mar2004092438-0500 Importance: normal Thread-Index: AcQKpypZJufTRkLoTkSopeBAuG0Qng== content-class: urn:content-classes:message X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4927.1200 X-OpenMail-Hops: 1 X-Bad-Content-Type: text/plain; charset=US-ASCII X-OriginalArrivalTime: 15 Mar 2004 16:04:15.0890 (UTC) FILETIME=[2A4FB720:01C40AA7] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hello Nicholas, I define Downtime as the time the machine was not available for scheduled treatments. In other words if a patient's treatment was scheduled on the accelerator and the accelerator was not available due to equipment failure then the machine is down. Scheduled maintenance (PMI, Upgrades, Scheduled Physics QA etc) is not considered downtime. Intermittent faults, which require some operator workaround (Such as reloading the beam, changing energies, sticky pendent thumbwheels), can also be considered as downtime. The problem of course is accurately tracking these small increments. Should there be only one or two a day they may point to required maintenance but will not contribute significantly to downtime. If on the other hand an intermittent recurring fault resolved by some operator action are more frequent they may and up to several minutes a day. In one month three minutes per day would add up to 1 hour a month. One hour could be as much as 0.65% Downtime based on 8 hrs per day twenty days a month (1hr./160 hrs). The problem of course is accurately collecting this data. Many of these faults may not be captured or easily extracted from the machine fault logs. Depending on the therapist to record faults is not always possible since they usually are multitasking on several other concurrent activities. Obviously you may want to apply some time threshold before you bother adding small cumulative errors. Here is where you have to use your judgement considering the type of recurring fault, the frequency of the fault, the time to clear the fault. Generally you know when you should start including these faults by the frequency of recurring complaints from the therapists. Some institutions do not bother to record faults as Downtime until they pas some threshold 15 minutes time, or the need to remove the patient from the treatment table. To try and be more positive I generally refer to the machines availability (100%- Downtime) rather then Downtime. Hope this helps. Frank Spitz Clinical Engineer Thomas Jefferson University Hospital Philadelphia PA 215 955 5993  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUM00EM7SYGGD@hubbard.azu.nl>; Mon, 15 Mar 2004 20:03:55 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004031520035328093 ; Mon, 15 Mar 2004 20:03:53 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id UAA03683; Mon, 15 Mar 2004 20:05:44 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma003512; Mon, 15 Mar 2004 20:05:06 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id LAA29648 for linac-eng-list; Mon, 15 Mar 2004 11:22:45 -0600 (CST) Received: from nasvir01.nas.medcity.net (mail.nas.medcity.net [199.91.33.30]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id LAA29644 for ; Mon, 15 Mar 2004 11:22:44 -0600 (CST) Received: from 165.214.16.134 by nasvir01.nas.medcity.net (InterScan E-Mail VirusWall NT); Mon, 15 Mar 2004 11:22:10 -0600 Received: by exweb01.colhca.com with Internet Mail Service (5.5.2657.72) id ; Mon, 15 Mar 2004 11:21:55 -0600 Date: Mon, 15 Mar 2004 11:22:05 -0600 From: Tirabassi Michael Subject: RE: No output, then output, then back to no output Sender: owner-linac-eng@plato.aristotle.net To: "Linac list (E-mail)" Message-id: <39A90AC123CB9D428821E2BC273E73CD01F866BA@ftwex03.hca.corpad.net> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 15 Mar 2004 11:22:05 -0600 From: Tirabassi Michael Subject: RE: No output, then output, then back to no output Sender: owner-linac-eng@plato.aristotle.net To: "Linac list (E-mail)" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hello, Cl1800 #46 I want to thank everyone for their response to my original post. I went poking around in the modulator power distribution area this week end and found crispy K2 contacts and some questionable wire terminations on a few aux contacts for K2-K4. Pulled K2 and cleaned up contacts. (This is the second time I've done this. Last time about 6 years ago). What is nice about the old Allen Bradley contactors is that the contact pads are thick so you can re-surface several times, kind of like the old hardwood floors that you could sand down two or three times and refinish. Due to the pad thickness being diminished because of two times re-surfacing and the hassle in accessing K2,I pulled K5, cleaned the contacts and installed in K2 position. K5 used to power Kly,Bmag,Guide solenoids. Only pulled in when machine in on mode. Contacts pads were in great shape. Just needed a light dusting. I then replaced all the aux contacts for K1-K4 and repaired any questionable wire terminations. At this point I feel confident that the problem is solved. Thanks again for yuz guys help. Mike T. RCC  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUN002885JD21@hubbard.azu.nl>; Tue, 16 Mar 2004 00:35:44 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004031600353631566 ; Tue, 16 Mar 2004 00:35:36 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id AAA14490; Tue, 16 Mar 2004 00:37:28 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma014398; Tue, 16 Mar 2004 00:36:50 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id PAA08749 for linac-eng-list; Mon, 15 Mar 2004 15:40:59 -0600 (CST) Received: from PHSEXCHICO.MGH.HARVARD.EDU (phsexchico.mgh.harvard.edu [132.183.126.50]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id PAA08745 for ; Mon, 15 Mar 2004 15:40:57 -0600 (CST) Received: by phsexchico.mgh.harvard.edu with Internet Mail Service (5.5.2657.72) id ; Mon, 15 Mar 2004 16:40:27 -0500 Date: Mon, 15 Mar 2004 16:40:26 -0500 From: "Maddox, Buford J" Subject: RE: Low dose rate Sender: owner-linac-eng@plato.aristotle.net To: 'faichichan' , linac-eng@plato.aristotle.net Message-id: <36298D09ED1AD311B4DC0008C7F4D4E1114663AE@phsexch6.partners.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=big5 Content-transfer-encoding: quoted-printable Precedence: bulk X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id PAA08746 X-MIME-Autoconverted: from 8bit to quoted-printable by plato.aristotle.net id PAA08749 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 15 Mar 2004 16:40:26 -0500 From: "Maddox, Buford J" Subject: RE: Low dose rate Sender: owner-linac-eng@plato.aristotle.net To: 'faichichan' , linac-eng@plato.aristotle.net X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id PAA08746 X-MIME-Autoconverted: from 8bit to quoted-printable by plato.aristotle.net id PAA08749 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Gun resistor? Fil plot? -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of faichichan Sent: Friday, March 12, 2004 8:37 PM To: linac-eng@plato.aristotle.net Subject: Low dose rate Hi all: I have a 600C 7 years ago that has a problem of low dose rate even at dos= e servo off, e.g. set dose rate to 400, actual dose rate only around 390 at dose = servo off. I have tried to replace a new magnetron and have manually tuned up A= FC to get about same dose rate. What should I do to fix it?=20 fai =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =A4=E9=A4=E9=A7K=B6O=C0H=AE=C9=BE=C7=AD^=BBy/=B4=B6=B3q=B8=DC - http://adimages.sina.com.hk/Lingua_0304.html =BC=E9=C3z=A4H=A1A=BB=F4=A4U=B8=FC - =A5=FE=B7s=A4=E2=BE=F7=B9C=C0=B8 - http://sms.sina.com.hk/game_index.html  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUN005VHDD4T2@hubbard.azu.nl>; Tue, 16 Mar 2004 03:24:43 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004031603244000060 ; Tue, 16 Mar 2004 03:24:40 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id DAA02776; Tue, 16 Mar 2004 03:26:31 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma002722; Tue, 16 Mar 2004 03:25:58 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id SAA11635 for linac-eng-list; Mon, 15 Mar 2004 18:36:17 -0600 (CST) Received: from gwd-mail01.health.qld.gov.au (smtp.health.qld.gov.au [203.202.23.104]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id SAA11631 for ; Mon, 15 Mar 2004 18:36:13 -0600 (CST) Received: from health-es2.health.qld.gov.au (unverified) by gwd-mail01.health.qld.gov.au (Content Technologies SMTPRS 4.3.10) with SMTP id for ; Tue, 16 Mar 2004 10:40:34 +1000 Received: from CORPORATE-SYSTEMS-Message_Server by health-es2.health.qld.gov.au with Novell_GroupWise; Tue, 16 Mar 2004 10:35:38 +1000 Date: Tue, 16 Mar 2004 10:35:20 +1000 From: Joan Hatton Subject: RE: Definition of Downtime (Uptime) Sender: owner-linac-eng@plato.aristotle.net To: nicholas.norris@mpdoch.org, linac-eng@plato.aristotle.net, Graham.Chalmers@uhb.nhs.uk Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 5.5.6.1 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_+oQfkXvMYbhwS+Vg5KT93w)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 16 Mar 2004 10:35:20 +1000 From: Joan Hatton Subject: RE: Definition of Downtime (Uptime) Sender: owner-linac-eng@plato.aristotle.net To: nicholas.norris@mpdoch.org, linac-eng@plato.aristotle.net, Graham.Chalmers@uhb.nhs.uk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This is a MIME message. If you are reading this text, you may want to consider changing to a mail reader or gateway that understands how to properly handle MIME multipart messages. --Boundary_(ID_+oQfkXvMYbhwS+Vg5KT93w) Content-type: text/plain; charset=us-ascii Content-transfer-encoding: quoted-printable Interesting that the replies refer to "the machine" being available for cli= nical use, implying all beam energies available. If one electron energy we= re not available, would you then say "the machine" is not complete and ther= efore down? We had a spell of 2-3weeks when 15MeV was out, and we waited f= or a specific part. Not a real problem for clinical treatments with a matc= hed linac, but if we take the full functionality of machine approach, the d= owntime is distorted. Joan Joan Hatton Medical Physics Department The Townsville Hospital Queensland 4810 Australia Tel: +61 7 4796 1042 Fax: +61 7 4796 1151 >>> Graham Chalmers Monday, 15 March 2004 7:42= :54 pm >>> Dear Nicholas This has been a perpetual issue. I would suggest you need to determine what= you want downtime figures for. If you have units under contracts you will = have the manufacturer's definitions. The difficulty I have with downtimes is that a downtime value may be determ= ined by either the reliability of the equipment, parts availability, effici= ency of a manufacturer to supply and fit replacement parts, efficiency of i= n-house maintenance team and a global figure may not fully suffice. Neverth= eless most of us don't have the time to do detailed analysis as the time sp= ent may outweigh the gain (if any) especially if the downtimes are generall= y good. I calculate the availability here in the following way:- Available hours for clinical use /month =3D [ Working hours /month (e.g. M= on-Fri 7.45 hours/day) - planned QC and Maintenance hours ] So % availability =3D (available hours - downtime) / available hours Anything that is negotiated e.g. time to repair, change parts is not counte= d as downtime as no clinical slots are lost, likewise loss of overall power= to the department With best wishes Graham Chalmers Graham Chalmers=20 Radiotherapy Physics University Hospital Birmingham NHS Trust Birmingham B15 2TH 0121-627-2266 DISCLAIMER: This e-mail contains proprietary information some or all of whi= ch may be confidential or legally privileged. It is for the exclusive use o= f the intended recipient(s) only. If an addressing or transmission error ha= s misdirected this e-mail and you are not the intended recipient(s), please= notify the author by replying to this e-mail. If you are not the intended = recipient you must not use, disclose, distribute, copy, print, or rely on t= his e-mail, as this may be unlawful. -----Original Message----- From: Nicholas Norris [mailto:nnorris@mpdoch.org]=20 Sent: 13 March 2004 13:00 To: linac-eng@plato.aristotle.net Subject: Definition of Downtime (Uptime) I am looking for a definition of downtime (uptime) for radiotherapy machine= s. Is there a national agreed definition for downtime. How do different centres define it? Nicholas Norris Chief Engineer Medical Physics Department Oldchurch Hospital BHR Hospitals NHS Trust Romford Essex. RM7 0BE. Tel: 01708 506442 Fax: 01708 708485 e-mail : nicholas.norris@mpdoch.org The information contained in this message and/or any attachments(s) may be = of a private and confidential nature, and is intended solely for the attent= ion of the addressee. If you have received this message in error or feel yo= u should not have been the intended recipient, please return it and any att= achments to the sender immediately. All messages relating to this communica= tion should then be deleted from your system. Unauthorised usage, copying, = disclosure or alteration of this message and/or attachment(s) is strictly p= rohibited. Barking, Havering and Redbridge Hospitals NHS Trust will not be = held responsible for any direct or indirect damages which may arise from al= teration of this message or any attachment(s), by a third party or resultin= g from the transmission of a virus.=20 DISCLAIMER: This e-mail contains proprietary information some or all of whi= ch may be confidential or legally privileged. It is for the exclusive use o= f the intended recipient(s) only. If an addressing or transmission error ha= s misdirected this e-mail and you are not the intended recipient(s), please= notify the author by replying to this e-mail. If you are not the intended = recipient you must not use, disclose, distribute, copy, print, or rely on t= his e-mail, as this may be unlawful. ***************************************************************************= ******** This email, including any attachments sent with it, is confidential and for= the sole use of the intended recipient(s). This confidentiality is not wa= ived or lost, if you receive it and you are not the intended recipient(s), = or if it is transmitted/received in error. Any unauthorised use, alteration, disclosure, distribution or review of thi= s email is prohibited. It may be subject to a statutory duty of confidenti= ality if it relates to health service matters. If you are not the intended recipient(s), or if you have received this emai= l in error, you are asked to immediately notify the sender by telephone or = by return email. You should also delete this email and destroy any hard co= pies produced. ***************************************************************************= ******** --Boundary_(ID_+oQfkXvMYbhwS+Vg5KT93w) Content-type: text/html; charset=ISO-8859-1 Content-description: HTML Content-transfer-encoding: quoted-printable
Interesting that the replies refer to "the machine" being available fo= r=20 clinical use, implying all beam energies available.  If= one=20 electron energy were not available, would you then say "the machine" is not= complete and therefore down?  We had a spell of 2-3weeks when 15MeV w= as=20 out, and we waited for a specific part.  Not a real problem for clinic= al=20 treatments with a matched linac, but if we take the full functionality of= machine approach, the downtime is distorted.
 
Joan
 
Joan Hatton
Medical Physics Department
The Townsville=20 Hospital
Queensland 4810
Australia
 
Tel: +61 7 4796 1042
Fax: +61 7 4796 1151

>>> Graha= m=20 Chalmers <Graham.Chalmers@uhb.nhs.uk> Monday, 15 March 2004 7:42:54 p= m=20 >>>

Dear=20 Nicholas

&n= bsp;

This has been a= perpetual issue. I would suggest you need to determine what you want downt= ime=20 figures for. If you have units under contracts you will have the manufactur= er's=20 definitions.

&n= bsp;

The difficulty I= have=20 with downtimes is that a downtime value may be determined by either the=20 reliability of the equipment, parts availability, efficiency of a manufactu= rer=20 to supply and fit replacement parts, efficiency of in-house maintenance tea= m and=20 a global figure may not fully suffice. Nevertheless most of us don't have t= he=20 time to do detailed analysis as the time spent may outweigh the gain (if an= y)=20 especially if the downtimes are generally good.

&n= bsp;

I calculate the= availability here in the following way:-

&n= bsp;

Available hours = for=20 clinical use /month  =3D [ Working hours /month (e.g. Mon-Fri 7.45 hou= rs/day)=20 - planned QC and Maintenance hours ]

&n= bsp;

So % availabilit= y =3D=20 (available hours - downtime) / available hours

&n= bsp;

Anything that is= negotiated e.g. time to repair, change parts is not counted as downtime as= no=20 clinical slots are lost, likewise loss of overall power to the=20 department

&n= bsp;

&n= bsp;

With best=20 wishes

<= SPAN=20 style=3D"FONT-SIZE: 12pt; COLOR: navy"> 

Graham=20 Chalmers

<= SPAN=20 style=3D"FONT-SIZE: 12pt; COLOR: navy"> 

<= SPAN=20 style=3D"FONT-SIZE: 12pt; COLOR: navy"> 

G= raham=20 Chalmers&= nbsp;

R= adiotherapy=20 Physics

U= niversity= = Hospital= = Birmingham = NHS=20 Trust

B= irmingham = B15=20 2TH

0= 121-627-2266

<= SPAN=20 style=3D"FONT-SIZE: 12pt; COLOR: navy"> 

<= SPAN=20 style=3D"FONT-SIZE: 12pt; COLOR: navy"> 

<= SPAN=20 style=3D"FONT-SIZE: 12pt; COLOR: navy"> 

<= SPAN=20 style=3D"FONT-SIZE: 12pt; COLOR: navy"> 

DISCLAIMER: This= e-mail=20 contains proprietary information some or all of which may be confidential o= r=20 legally privileged. It is for the exclusive use of the intended recipient(s= )=20 only. If an addressing or transmission error has misdirected this e-mail an= d you=20 are not the intended recipient(s), please notify the author by replying to = this=20 e-mail. If you are not the intended recipient you must not use, disclose,= distribute, copy, print, or rely on this e-mail, as this may be=20 unlawful.

-----Original= Message-----
From: Nich= olas=20 Norris [mailto:nnorris@mpdoch.org]
Sent: = 13 March=20 2004 13:00
To:=20 linac-eng@plato.aristotle.net
Subject: Definition of Downtime=20 (Uptime)

 

I am looking for a definition= of=20 downtime (uptime) for radiotherapy machines.

Is there a national agreed=20 definition for downtime.

How do different centres defi= ne=20 it?

 

 

 

Nicholas Norris=

Chief Engineer<= /P>

Medical Physics=20 Department

Oldchurch Hospital

BHR Hospitals NHS=20 Trust

Romford

Essex.

RM7 0BE.

Tel: 01708 506442

Fax: 01708 708485

e-mail : nicholas.norris@mpdoch.org

 

T= he=20 information contained in this message and/or any attachments(s) may be of a= private and confidential nature, and is intended solely for the attention = of the=20 addressee. If you have received this message in error or feel you should no= t=20 have been the intended recipient, please return it and any attachments to t= he=20 sender immediately. All messages relating to this communication should then= be=20 deleted from your system. Unauthorised usage, copying, disclosure or altera= tion=20 of this message and/or attachment(s) is strictly prohibited. Barking, Haver= ing=20 and Redbridge Hospitals NHS Trust will not be held responsible for any dire= ct or=20 indirect damages which may arise from alteration of this message or any=20 attachment(s), by a third party or resulting from the transmission of a=20 virus.=

 

DISCLAIMER: This e-mail contains proprietary= information some or all of which may be confidential or legally privileged= . It=20 is for the exclusive use of the intended recipient(s) only. If an addressin= g or=20 transmission error has misdirected this e-mail and you are not the intended= recipient(s), please notify the author by replying to this e-mail. If you = are=20 not the intended recipient you must not use, disclose, distribute, copy, pr= int,=20 or rely on this e-mail, as this may be unlawful.

<= BR>
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 --Boundary_(ID_+oQfkXvMYbhwS+Vg5KT93w)--  1,, X-Coding-System: iso-latin-1-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUN00AIJEU1I8@hubbard.azu.nl>; Tue, 16 Mar 2004 03:56:31 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004031603562800258 ; Tue, 16 Mar 2004 03:56:28 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id DAA06506; Tue, 16 Mar 2004 03:58:20 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma006457; Tue, 16 Mar 2004 03:58:04 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id TAA12086 for linac-eng-list; Mon, 15 Mar 2004 19:12:12 -0600 (CST) Received: from hk.sina.com.hk ([202.85.139.116]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id TAA12077 for ; Mon, 15 Mar 2004 19:11:52 -0600 (CST) Received: (qmail 25111 invoked by uid 99); Tue, 16 Mar 2004 01:01:47 +0000 Date: Tue, 16 Mar 2004 09:01:47 +0800 From: =?big5?B?ZmFpY2hpY2hhbg==?= Subject: =?big5?B?UkU6UmU6IExvdyBkb3NlIHJhdGU=?= Sender: owner-linac-eng@plato.aristotle.net To: =?big5?B?Sm9uYXRoYW4gQ2hhbiAg?= Cc: linac-eng@plato.aristotle.net Message-id: <20040316010147.25109.qmail@hk.sina.com.hk> MIME-version: 1.0 Content-type: text/plain; charset=big5 Content-disposition: inline Content-transfer-encoding: 8BIT Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 16 Mar 2004 09:01:47 +0800 From: =?big5?B?ZmFpY2hpY2hhbg==?= Subject: =?big5?B?UkU6UmU6IExvdyBkb3NlIHJhdGU=?= Sender: owner-linac-eng@plato.aristotle.net To: =?big5?B?Sm9uYXRoYW4gQ2hhbiAg?= Cc: linac-eng@plato.aristotle.net Content-disposition: inline X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hi Jonathan: The things you suggested I have already done. But what is maggy? Thanks Fai >1. What is the Calculated PRF, as noted in the morning checkout? >2. Have you done the frequency calibration? Just drop the machine to standby mode (in main menu), and then press F2 (diagnostic) to launch the freq. calibration. See what the machine gives up. Clinac should give you a +15% (approx.) margin if not reaching the ceiling PRF. >3. If your machine has reached the ceiling PRF, then probably a new maggy is needed. > >Jonathan Chan >----- Original Message ----- >From: faichichan >To: linac-eng@plato.aristotle.net >Sent: Saturday, March 13, 2004 09:36:30 +0800 >Subject: > > >Hi all: >I have a 600C 7 years ago that has a problem of low dose rate even at dose servo off, e.g. set dose rate to 400, actual dose rate only around 390 at dose servo off. I have tried to replace a new magnetron and have manually tuned up AFC to get about same dose rate. What should I do to fix it? > >fai > > > >========================================================================================== >????¡±K?O?H?????^?y/???q?? - >http://adimages.sina.com.hk/Lingua_0304.html >???z?H?A???U?? - ¢D?¡Ps???¡Ò?C?? - >http://sms.sina.com.hk/game_index.html > > > > >Jonathan Chan >Queen Mary Hospital > >. > ========================================================================================== ¤é¤é§K¶OÀH®É¾Ç­^»y/´¶³q¸Ü - http://adimages.sina.com.hk/Lingua_0304.html ¼éÃz¤H¡A»ô¤U¸ü - ¥þ·s¤â¾÷¹CÀ¸ - http://sms.sina.com.hk/game_index.html ³ü¶g¥ZÀY±ø¡G §õ¿A·¢ÅÜÅ]³N¡@¹q¬Õ¤@¾Qµf¥Í - http://adimages.sina.com.hk/Mag.html  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUN00G6BNHSXT@hubbard.azu.nl>; Tue, 16 Mar 2004 07:03:31 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004031607032901436 ; Tue, 16 Mar 2004 07:03:29 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id HAA25607; Tue, 16 Mar 2004 07:05:20 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma025593; Tue, 16 Mar 2004 07:05:06 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id WAA15626 for linac-eng-list; Mon, 15 Mar 2004 22:25:30 -0600 (CST) Received: from smtp02.hutchcity.com (smtp02.hutchcity.com [202.45.84.105]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id WAA15622 for ; Mon, 15 Mar 2004 22:25:28 -0600 (CST) Received: (qmail 39171 invoked from network); Tue, 16 Mar 2004 04:25:22 +0000 Received: from unknown (HELO webmail01.hutchcity.com) ([202.45.84.70]) (envelope-sender ) by localhost (qmail-ldap-1.03) with SMTP for ; Tue, 16 Mar 2004 04:25:22 +0000 Date: Tue, 16 Mar 2004 12:25:23 +0800 (HKT) From: Jonathan Chan Subject: Re: RE:Re: Low dose rate Sender: owner-linac-eng@plato.aristotle.net To: faichichan Cc: linac-eng@plato.aristotle.net Message-id: <15697780.1079411123087.JavaMail.root@webmail01.hutchcity.com> MIME-version: 1.0 Content-type: text/plain; charset=Big5 Content-transfer-encoding: quoted-printable Precedence: bulk X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id WAA15623 X-MIME-Autoconverted: from 8bit to quoted-printable by plato.aristotle.net id WAA15626 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 16 Mar 2004 12:25:23 +0800 (HKT) From: Jonathan Chan Subject: Re: RE:Re: Low dose rate Sender: owner-linac-eng@plato.aristotle.net To: faichichan Cc: linac-eng@plato.aristotle.net X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id WAA15623 X-MIME-Autoconverted: from 8bit to quoted-printable by plato.aristotle.net id WAA15626 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f The ceiling PRF is 400, any reading higher than 400 means you will get 40= 0 only. As someone suggested, pls check the gun resistor. Pls note that the "nom= inal" value stamped on the resistor body is not the resistance value you = will get. It is only before "burn-in". My memory is fading, but for 4k4= , you probably will get around 2kx. Another way to check if it is the gun resistor causing this low dose rate= problem is to check your morning checkout (but this will only help if yo= u keep long records...). If you notice any sudden change in Target I, th= en you will have the clue. Or, you may temporarily simply short out the gun resistor, and see what n= ew target current you can have. If this is significantly different, you = gun resistor is bad. Have you checked the magnet? Is it an electromagnet? Is the current (pl= s directly measure it) the same? Does the output voltage of the electrom= agnet differ significantly from old values? Jonathan ----- Original Message ----- From: faichichan To: Jonathan Chan Cc: linac-eng@plato.aristotle.net Sent: Tuesday, March 16, 2004 09:01:47 +0800 Subject: RE:Re: Low dose rate Hi Jonathan: The things you suggested I have already done. But what is maggy?=20 Thanks=20 Fai >1. What is the Calculated PRF, as noted in the morning checkout? >2. Have you done the frequency calibration? Just drop the machine to st= andby mode (in main menu), and then press F2 (diagnostic) to launch the f= req. calibration. See what the machine gives up. Clinac should give you= a +15% (approx.) margin if not reaching the ceiling PRF. >3. If your machine has reached the ceiling PRF, then probably a new magg= y is needed. > >Jonathan Chan >----- Original Message ----- >From: faichichan >To: linac-eng@plato.aristotle.net >Sent: Saturday, March 13, 2004 09:36:30 +0800 >Subject:=20 > > >Hi all: >I have a 600C 7 years ago that has a problem of low dose rate even at do= se servo off, e.g. set dose rate to 400, actual dose rate only around 390= at dose servo off. I have tried to replace a new magnetron and have manu= ally tuned up AFC to get about same dose rate. What should I do to fix it= ?=20 > >fai > > > >=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D >?????=A1=D3K?O?H?????^?y/???q?? - >http://adimages.sina.com.hk/Lingua_0304.html >???z?H?A???U?? - =A2FD??Ps??????C?? - >http://sms.sina.com.hk/game_index.html > > > > >Jonathan Chan >Queen Mary Hospital > >. >  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUO00H8J6IWO0@hubbard.azu.nl>; Tue, 16 Mar 2004 13:54:43 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004031613543010416 ; Tue, 16 Mar 2004 13:54:30 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id NAA14558; Tue, 16 Mar 2004 13:56:22 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma014226; Tue, 16 Mar 2004 13:55:08 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id EAA19225 for linac-eng-list; Tue, 16 Mar 2004 04:46:48 -0600 (CST) Received: from mail23.nhs.uk (mail23.nhs.uk [62.6.139.221]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id EAA19221 for ; Tue, 16 Mar 2004 04:46:46 -0600 (CST) Received: from [10.191.254.3] (helo=relayint1.nhs.uk) by mail23.nhs.uk with esmtp (MTC MTA) id 1B3C5P-0007BU-DA for linac-eng@plato.aristotle.net; Tue, 16 Mar 2004 10:46:15 +0000 Received: from relay.nhs.uk (194.62.42.141) by relayint1.nhs.uk (Syntegra-I1 7.0.008) id 4039DF370052B835 for linac-eng@plato.aristotle.net; Tue, 16 Mar 2004 10:46:15 +0000 Received: from gstt.nhs.uk (195.105.110.3) by relay.nhs.uk (Syntegra-1 7.0.008) id 405576A90009506E for linac-eng@plato.aristotle.net; Tue, 16 Mar 2004 10:46:15 +0000 Received: from (EHLO ex1.gstt.sthames.nhs.uk) (195.105.110.28) by gstt.nhs.uk with SMTP (im); Tue, 16 Mar 2004 10:51:48 +0000 (GST) Received: by ex1.gstt.sthames.nhs.uk with Internet Mail Service (5.5.2653.19) id ; Tue, 16 Mar 2004 10:46:03 +0000 Date: Tue, 16 Mar 2004 10:46:01 +0000 From: Richard.Newby@gstt.sthames.nhs.uk Subject: RE: Definition of Downtime (Uptime) Sender: owner-linac-eng@plato.aristotle.net To: Graham.Chalmers@uhb.nhs.uk, Joan_Hatton@health.qld.gov.au, linac-eng@plato.aristotle.net, nicholas.norris@mpdoch.org Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_+GZ0xY2gmuQxScsCUIJEkA)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 16 Mar 2004 10:46:01 +0000 From: Richard.Newby@gstt.sthames.nhs.uk Subject: RE: Definition of Downtime (Uptime) Sender: owner-linac-eng@plato.aristotle.net To: Graham.Chalmers@uhb.nhs.uk, Joan_Hatton@health.qld.gov.au, linac-eng@plato.aristotle.net, nicholas.norris@mpdoch.org X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_+GZ0xY2gmuQxScsCUIJEkA) Content-type: text/plain; charset=iso-8859-1 As you say, machine not down, treatment unaffected, therefore no downtime! Easy! But if it was a portal imaging system that was down, the urgency to repair is not there (a beam film can be taken) but an important part is missing. How is this recorded? Here it is invisible to the downtime figures but unfortunately not to the administrators! Rick St Thomas' Hospital London -----Original Message----- From: Joan Hatton [mailto:Joan_Hatton@health.qld.gov.au] Sent: 16 March 2004 00:35 To: Graham.Chalmers@uhb.nhs.uk; linac-eng@plato.aristotle.net; nicholas.norris@mpdoch.org Subject: RE: Definition of Downtime (Uptime) Interesting that the replies refer to "the machine" being available for clinical use, implying all beam energies available. If one electron energy were not available, would you then say "the machine" is not complete and therefore down? We had a spell of 2-3weeks when 15MeV was out, and we waited for a specific part. Not a real problem for clinical treatments with a matched linac, but if we take the full functionality of machine approach, the downtime is distorted. Joan Joan Hatton Medical Physics Department The Townsville Hospital Queensland 4810 Australia Tel: +61 7 4796 1042 Fax: +61 7 4796 1151 >>> Graham Chalmers Monday, 15 March 2004 7:42:54 pm >>> Dear Nicholas This has been a perpetual issue. I would suggest you need to determine what you want downtime figures for. If you have units under contracts you will have the manufacturer's definitions. The difficulty I have with downtimes is that a downtime value may be determined by either the reliability of the equipment, parts availability, efficiency of a manufacturer to supply and fit replacement parts, efficiency of in-house maintenance team and a global figure may not fully suffice. Nevertheless most of us don't have the time to do detailed analysis as the time spent may outweigh the gain (if any) especially if the downtimes are generally good. I calculate the availability here in the following way:- Available hours for clinical use /month = [ Working hours /month (e.g. Mon-Fri 7.45 hours/day) - planned QC and Maintenance hours ] So % availability = (available hours - downtime) / available hours Anything that is negotiated e.g. time to repair, change parts is not counted as downtime as no clinical slots are lost, likewise loss of overall power to the department With best wishes Graham Chalmers Graham Chalmers Radiotherapy Physics University Hospital Birmingham NHS Trust Birmingham B15 2TH 0121-627-2266 DISCLAIMER: This e-mail contains proprietary information some or all of which may be confidential or legally privileged. It is for the exclusive use of the intended recipient(s) only. If an addressing or transmission error has misdirected this e-mail and you are not the intended recipient(s), please notify the author by replying to this e-mail. If you are not the intended recipient you must not use, disclose, distribute, copy, print, or rely on this e-mail, as this may be unlawful. -----Original Message----- From: Nicholas Norris [mailto:nnorris@mpdoch.org] Sent: 13 March 2004 13:00 To: linac-eng@plato.aristotle.net Subject: Definition of Downtime (Uptime) I am looking for a definition of downtime (uptime) for radiotherapy machines. Is there a national agreed definition for downtime. How do different centres define it? Nicholas Norris Chief Engineer Medical Physics Department Oldchurch Hospital BHR Hospitals NHS Trust Romford Essex. RM7 0BE. Tel: 01708 506442 Fax: 01708 708485 e-mail : nicholas.norris@mpdoch.org The information contained in this message and/or any attachments(s) may be of a private and confidential nature, and is intended solely for the attention of the addressee. If you have received this message in error or feel you should not have been the intended recipient, please return it and any attachments to the sender immediately. All messages relating to this communication should then be deleted from your system. Unauthorised usage, copying, disclosure or alteration of this message and/or attachment(s) is strictly prohibited. Barking, Havering and Redbridge Hospitals NHS Trust will not be held responsible for any direct or indirect damages which may arise from alteration of this message or any attachment(s), by a third party or resulting from the transmission of a virus. DISCLAIMER: This e-mail contains proprietary information some or all of which may be confidential or legally privileged. It is for the exclusive use of the intended recipient(s) only. If an addressing or transmission error has misdirected this e-mail and you are not the intended recipient(s), please notify the author by replying to this e-mail. If you are not the intended recipient you must not use, disclose, distribute, copy, print, or rely on this e-mail, as this may be unlawful. **************************************************************************** ******* This email, including any attachments sent with it, is confidential and for the sole use of the intended recipient(s). This confidentiality is not waived or lost, if you receive it and you are not the intended recipient(s), or if it is transmitted/received in error. Any unauthorised use, alteration, disclosure, distribution or review of this email is prohibited. It may be subject to a statutory duty of confidentiality if it relates to health service matters. If you are not the intended recipient(s), or if you have received this email in error, you are asked to immediately notify the sender by telephone or by return email. You should also delete this email and destroy any hard copies produced. **************************************************************************** ******* -- **************************************************************************************** Please note that as from the 6th of March 2004 the Trust telephone number for both Guy's and St. Thomas' will now be 020 7188 7188. **************************************************************************************** Disclaimer **************************************************************************************** This e-mail may contain confidential and / or privileged information. Unless otherwise specified, the opinions expressed herein do not necessarily represent those of Guy's and St Thomas Hospital NHS Trust or any of its subsidiaries. If you are not the intended recipient (or have received this e-mail in error) please notify the sender and destroy this e-mail immediately. 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As you say, machine not down, treatment unaffected, therefore no downtime! Easy! But if it was a portal imaging system that was down, the urgency to repair is not there (a beam film can be taken) but an important part is missing. How is this recorded? Here it is invisible to the downtime figures but unfortunately not to the administrators!
 
Rick
St Thomas' Hospital
London
-----Original Message-----
From: Joan Hatton [mailto:Joan_Hatton@health.qld.gov.au]
Sent: 16 March 2004 00:35
To: Graham.Chalmers@uhb.nhs.uk; linac-eng@plato.aristotle.net; nicholas.norris@mpdoch.org
Subject: RE: Definition of Downtime (Uptime)

Interesting that the replies refer to "the machine" being available for clinical use, implying all beam energies available.  If one electron energy were not available, would you then say "the machine" is not complete and therefore down?  We had a spell of 2-3weeks when 15MeV was out, and we waited for a specific part.  Not a real problem for clinical treatments with a matched linac, but if we take the full functionality of machine approach, the downtime is distorted.
 
Joan
 
Joan Hatton
Medical Physics Department
The Townsville Hospital
Queensland 4810
Australia
 
Tel: +61 7 4796 1042
Fax: +61 7 4796 1151

>>> Graham Chalmers <Graham.Chalmers@uhb.nhs.uk> Monday, 15 March 2004 7:42:54 pm >>>

Dear Nicholas

 

This has been a perpetual issue. I would suggest you need to determine what you want downtime figures for. If you have units under contracts you will have the manufacturer's definitions.

 

The difficulty I have with downtimes is that a downtime value may be determined by either the reliability of the equipment, parts availability, efficiency of a manufacturer to supply and fit replacement parts, efficiency of in-house maintenance team and a global figure may not fully suffice. Nevertheless most of us don't have the time to do detailed analysis as the time spent may outweigh the gain (if any) especially if the downtimes are generally good.

 

I calculate the availability here in the following way:-

 

Available hours for clinical use /month  = [ Working hours /month (e.g. Mon-Fri 7.45 hours/day) - planned QC and Maintenance hours ]

 

So % availability = (available hours - downtime) / available hours

 

Anything that is negotiated e.g. time to repair, change parts is not counted as downtime as no clinical slots are lost, likewise loss of overall power to the department

 

 

With best wishes

 

Graham Chalmers

 

 

Graham Chalmers 

Radiotherapy Physics

University Hospital Birmingham NHS Trust

Birmingham B15 2TH

0121-627-2266

 

 

 

 

DISCLAIMER: This e-mail contains proprietary information some or all of which may be confidential or legally privileged. It is for the exclusive use of the intended recipient(s) only. If an addressing or transmission error has misdirected this e-mail and you are not the intended recipient(s), please notify the author by replying to this e-mail. If you are not the intended recipient you must not use, disclose, distribute, copy, print, or rely on this e-mail, as this may be unlawful.

-----Original Message-----
From: Nicholas Norris [mailto:nnorris@mpdoch.org]
Sent: 13 March 2004 13:00
To: linac-eng@plato.aristotle.net
Subject: Definition of Downtime (Uptime)

 

I am looking for a definition of downtime (uptime) for radiotherapy machines.

Is there a national agreed definition for downtime.

How do different centres define it?

 

 

 

Nicholas Norris

Chief Engineer

Medical Physics Department

Oldchurch Hospital

BHR Hospitals NHS Trust

Romford

Essex.

RM7 0BE.

Tel: 01708 506442

Fax: 01708 708485

e-mail : nicholas.norris@mpdoch.org

 

The information contained in this message and/or any attachments(s) may be of a private and confidential nature, and is intended solely for the attention of the addressee. If you have received this message in error or feel you should not have been the intended recipient, please return it and any attachments to the sender immediately. All messages relating to this communication should then be deleted from your system. Unauthorised usage, copying, disclosure or alteration of this message and/or attachment(s) is strictly prohibited. Barking, Havering and Redbridge Hospitals NHS Trust will not be held responsible for any direct or indirect damages which may arise from alteration of this message or any attachment(s), by a third party or resulting from the transmission of a virus.

 

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--Boundary_(ID_+GZ0xY2gmuQxScsCUIJEkA)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUO006DJDXMB4@hubbard.azu.nl>; Tue, 16 Mar 2004 16:34:49 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004031616344314366 ; Tue, 16 Mar 2004 16:34:43 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id QAA01442; Tue, 16 Mar 2004 16:36:34 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma001266; Tue, 16 Mar 2004 16:35:46 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id HAA21342 for linac-eng-list; Tue, 16 Mar 2004 07:49:40 -0600 (CST) Received: from chs-exchsv2.covhealth.com (exchangesvr.covhealth.com [199.250.70.121]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id HAA21337 for ; Tue, 16 Mar 2004 07:49:38 -0600 (CST) Received: by CHS-EXCHSV2 with Internet Mail Service (5.5.2653.19) id ; Tue, 16 Mar 2004 07:49:07 -0600 Date: Tue, 16 Mar 2004 07:49:05 -0600 From: "Lockhart, Ryan" Subject: Millenium mlc Sender: owner-linac-eng@plato.aristotle.net To: 'clinac listserve' Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_nuC46hTYjpv23aDZKWGsaQ)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 16 Mar 2004 07:49:05 -0600 From: "Lockhart, Ryan" Subject: Millenium mlc Sender: owner-linac-eng@plato.aristotle.net To: 'clinac listserve' X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_nuC46hTYjpv23aDZKWGsaQ) Content-type: text/plain; CHARSET=US-ASCII We've got a problem with a millenium 120 MLC on a 21EX. Several times a day, we get a secondary feedback error on leaf A49. The error will show up in the middle of treatment and it will flicker on and off. Sometimes it clears itself, other times it has to be cleared by switching to another field and then back again. It can happen many times in one treatment. I have tried watching the secondary feedback values while running autocycles and the value on that leaf never looks out of step with the other leaves. I've also removed the secondary init. files. Does anybody have any ideas besides changing the softpot (which I'm ordering today)? I'll probably change the motor for that leaf since motors can cause some odd faults. Thanks. Ryan Lockhart Covenant Medical Center Waterloo, IA --Boundary_(ID_nuC46hTYjpv23aDZKWGsaQ) Content-type: text/html Content-transfer-encoding: quoted-printable Millenium mlc

We've got a problem with a millenium = 120 MLC on a 21EX.  Several times a day, we get a secondary = feedback error on leaf A49.  The error will show up in the middle = of treatment and it will flicker on and off.  Sometimes it clears = itself, other times it has to be cleared by switching to another field = and then back again.  It can happen many times in one = treatment.  I have tried watching the secondary feedback values = while running autocycles and the value on that leaf never looks out of = step with the other leaves.  I've also removed the secondary init. = files.

Does anybody have any ideas besides = changing the softpot (which I'm ordering today)?  I'll probably = change the motor for that leaf since motors can cause some odd = faults.

Thanks.

Ryan Lockhart
Covenant Medical Center
Waterloo, IA

--Boundary_(ID_nuC46hTYjpv23aDZKWGsaQ)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUO006R4E9B93@hubbard.azu.nl>; Tue, 16 Mar 2004 16:41:55 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004031616415214529 ; Tue, 16 Mar 2004 16:41:52 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id QAA03405; Tue, 16 Mar 2004 16:43:44 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma003187; Tue, 16 Mar 2004 16:42:49 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id IAA21526 for linac-eng-list; Tue, 16 Mar 2004 08:02:19 -0600 (CST) Received: from nasvir01.nas.medcity.net (mail.nas.medcity.net [199.91.33.30]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id IAA21522 for ; Tue, 16 Mar 2004 08:02:17 -0600 (CST) Received: from 165.214.16.65 by nasvir01.nas.medcity.net (InterScan E-Mail VirusWall NT); Tue, 16 Mar 2004 08:01:44 -0600 Received: by smtp-gw2.nas.medcity.net with Internet Mail Service (5.5.2657.72) id ; Tue, 16 Mar 2004 08:01:46 -0600 Date: Tue, 16 Mar 2004 08:01:41 -0600 From: Tirabassi Michael Subject: RE: Definition of Downtime (Uptime) Sender: owner-linac-eng@plato.aristotle.net To: "Linac list (E-mail)" Message-id: <39A90AC123CB9D428821E2BC273E73CD01F866BC@ftwex03.hca.corpad.net> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: MULTIPART/MIXED; BOUNDARY="Boundary_(ID_v/bcxSRHbiyZ7BJiOnn7PQ)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 16 Mar 2004 08:01:41 -0600 From: Tirabassi Michael Subject: RE: Definition of Downtime (Uptime) Sender: owner-linac-eng@plato.aristotle.net To: "Linac list (E-mail)" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_v/bcxSRHbiyZ7BJiOnn7PQ) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_smCmkVtqnna3TnEBbYhWLA)" --Boundary_(ID_smCmkVtqnna3TnEBbYhWLA) Content-type: text/plain; charset=iso-8859-1 Hello, I've found that a simple approach is the best for me. Are the therapists able to use the machine to treat patients during normal treatment hours or not? What ever time it is when they can not is downtime. If a machine goes down @ 2pm and the usual treatment day ends @ 5pm and I work till 9pm fixing the problem then downtime = 3hrs. For me downtime is relative to patient treatment times. If a problem occurs during a treatment and I giggle or tweak or kick the machine and everything works again and it hasn't been more than 15 minutes. No downtime. Again everything is relative to patient treatments hours. The only thing that really matters is did the patient get treated. What real difference does it make if the machine is in standby all night or it's being worked on other than your the poor soul working to get it going. You can track and analyze and calculate things to no end if you want to. This is not to say that you shouldn't keep track of these things but again for me a simple approach has worked quite well. In the end the question is always "Is the machine working? Can I treat patients?" There was an incident once with three pilots flying a commercial jet at night. This is a true story. A lamp was out on the instrument panel. The pilots got so engrossed with trying to figure out if the bulb was burnt out or if the sensor was bad or whatever it was that some how the auto pilot got disengaged then they totally ignored the low altitude warning audible alarm a when they finally realized what was happening, well....... to late. The plane crashed and killed everyone onboard.. All because of a little indicator (ID10T) lamp. Of course all statements herein are of my own free thinking and does not imply that others should consider,give thought to or even agree with such statements. Have a good day! Mike T. RCC --Boundary_(ID_smCmkVtqnna3TnEBbYhWLA) Content-type: text/html; charset=iso-8859-1
Hello,
 
 
I've found that a simple approach is the best for me. Are the therapists able to use the machine to treat patients during normal treatment hours or not?  What ever time it is when they can not is downtime. If a machine goes down @ 2pm and the usual treatment day ends @ 5pm and I work till 9pm fixing the problem then downtime = 3hrs. For me downtime is relative to patient treatment times.
 
If a problem occurs during a treatment and I giggle or tweak or kick the machine and everything works again and it hasn't been more than 15 minutes. No downtime. Again everything is relative to patient treatments hours.  The only thing that really matters is did the patient get treated. What real difference does it make if the machine is in standby all night or it's being worked on other than your the poor soul working to get it going.
 
You can track and analyze and calculate things to no end if you want to. This is not to say that you shouldn't keep track of these things but again for me a simple approach has worked quite well. In the end the question is always "Is the machine working? Can I treat patients?"
 
There was an incident once with three pilots flying a commercial jet at night. This is a true story. A lamp was out on the instrument panel. The pilots got so engrossed with trying to figure out if the bulb was burnt out or if the sensor was bad or whatever it was that some how the auto pilot got disengaged then they totally ignored the low altitude warning audible alarm a when they finally realized what was happening, well....... to late. The plane crashed and killed everyone onboard..  All because of a little indicator (ID10T) lamp.
 
Of course all statements herein are of my own free thinking and does not imply that others should consider,give thought to or even agree with such statements.
 
 
Have a good day!
 
 
Mike T.
RCC

 
 
 
 
 
 
 
 

 

 

 

 

 


--Boundary_(ID_smCmkVtqnna3TnEBbYhWLA)-- --Boundary_(ID_v/bcxSRHbiyZ7BJiOnn7PQ)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUO006SIEBB93@hubbard.azu.nl>; Tue, 16 Mar 2004 16:43:12 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004031616430814560 ; Tue, 16 Mar 2004 16:43:08 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id QAA03714; Tue, 16 Mar 2004 16:45:00 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma003566; Tue, 16 Mar 2004 16:44:14 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id IAA21729 for linac-eng-list; Tue, 16 Mar 2004 08:10:02 -0600 (CST) Received: from chs-exchsv2.covhealth.com (exchangesvr.covhealth.com [199.250.70.121]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id IAA21720 for ; Tue, 16 Mar 2004 08:10:00 -0600 (CST) Received: by CHS-EXCHSV2 with Internet Mail Service (5.5.2653.19) id ; Tue, 16 Mar 2004 08:09:29 -0600 Date: Tue, 16 Mar 2004 08:09:28 -0600 From: "Lockhart, Ryan" Subject: Millenium mlc Sender: owner-linac-eng@plato.aristotle.net To: 'clinac listserve' Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_Z/ai/+Q8A2AqEUdj3a96Mw)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 16 Mar 2004 08:09:28 -0600 From: "Lockhart, Ryan" Subject: Millenium mlc Sender: owner-linac-eng@plato.aristotle.net To: 'clinac listserve' X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_Z/ai/+Q8A2AqEUdj3a96Mw) Content-type: text/plain; CHARSET=US-ASCII We've got a problem with a millenium 120 MLC on a 21EX. Several times a day, we get a secondary feedback error on leaf A49. The error will show up in the middle of treatment and it will flicker on and off. Sometimes it clears itself, other times it has to be cleared by switching to another field and then back again. It can happen many times in one treatment. I have tried watching the secondary feedback values while running autocycles and the value on that leaf never looks out of step with the other leaves. I've also removed the secondary init. files. Does anybody have any ideas besides changing the softpot (which I'm ordering today)? I'll probably change the motor for that leaf since motors can cause some odd faults. Thanks. Ryan Lockhart Covenant Medical Center Waterloo, IA --Boundary_(ID_Z/ai/+Q8A2AqEUdj3a96Mw) Content-type: text/html Content-transfer-encoding: quoted-printable Millenium mlc

We've got a problem with a millenium = 120 MLC on a 21EX.  Several times a day, we get a secondary = feedback error on leaf A49.  The error will show up in the middle = of treatment and it will flicker on and off.  Sometimes it clears = itself, other times it has to be cleared by switching to another field = and then back again.  It can happen many times in one = treatment.  I have tried watching the secondary feedback values = while running autocycles and the value on that leaf never looks out of = step with the other leaves.  I've also removed the secondary init. = files.

Does anybody have any ideas besides = changing the softpot (which I'm ordering today)?  I'll probably = change the motor for that leaf since motors can cause some odd = faults.

Thanks.

Ryan Lockhart
Covenant Medical Center
Waterloo, IA

--Boundary_(ID_Z/ai/+Q8A2AqEUdj3a96Mw)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUO00A6VHL3NL@hubbard.azu.nl>; Tue, 16 Mar 2004 17:53:29 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004031617532616078 ; Tue, 16 Mar 2004 17:53:26 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id RAA21077; Tue, 16 Mar 2004 17:55:19 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma020901; Tue, 16 Mar 2004 17:54:32 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id IAA23371 for linac-eng-list; Tue, 16 Mar 2004 08:56:24 -0600 (CST) Received: from email.med.yale.edu (email.med.yale.edu [130.132.232.16]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id IAA23367 for ; Tue, 16 Mar 2004 08:56:23 -0600 (CST) Received: from yale.edu (vitalip.med.yale.edu [130.132.213.170]) by email.med.yale.edu (PMDF V6.1-1 #30873) with ESMTP id <0HUO0DIEAC5YU4@email.med.yale.edu> for linac-eng@plato.aristotle.net; Tue, 16 Mar 2004 09:56:22 -0500 (EST) Date: Tue, 16 Mar 2004 09:56:43 -0500 From: Peter Vitali Subject: Re: Millenium mlc Sender: owner-linac-eng@plato.aristotle.net To: "Lockhart, Ryan" Cc: 'clinac listserve' Message-id: <40571595.2C2D19FD@yale.edu> MIME-version: 1.0 X-Mailer: Mozilla 4.76 (Macintosh; U; PPC) Content-type: text/plain; charset=us-ascii; x-mac-type=54455854; x-mac-creator=4D4F5353 Content-transfer-encoding: 7bit Precedence: bulk X-Accept-Language: en References: X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 16 Mar 2004 09:56:43 -0500 From: Peter Vitali Subject: Re: Millenium mlc Sender: owner-linac-eng@plato.aristotle.net To: "Lockhart, Ryan" Cc: 'clinac listserve' X-Accept-Language: en X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Ryan: First thing I we do when we start getting Sec Feedback problems is to change the motor. The feed back from the motor and the soft pot have to agree within some window. From what we understand the feedback from the motor is generated by two spring wires. Given that the motor is turning in both directions there is ware on the wires or the armature that they rub on. Over time this will cause intermittent. Changing the motor usually clears it 95% of the time and I do not see any more Sec Feedback problems with that leaf. Next is to calibrate new Sec Feedback positions. If it continues after the motor is changed and calibrating the Sec Feedback, then I look at cleaning the leaf. The leaf may be sticking at some extended point which is not seen when you perform initialization. Next I change the Slider Spring. If that fails, then its soft pot time. Since 2000 when we installed our first 120 Mil MLC we have had to change the softpot once, Slider springs twice, but have changed numerous motors. Peter E. Vitali, CBET Therapeutic Radiological Engineer Yale New Haven Hospital 20 York Street, HRT 22 New Haven, CT. 06504 Phone: (203) 688-2948 FAX: (203) 688-3663 E-mail: peter.vitali@yale.edu As usual, everything I say may be plausibly denied at my employer's convenience...  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUO00CHAKI4VM@hubbard.azu.nl>; Tue, 16 Mar 2004 18:56:44 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004031618563916915 ; Tue, 16 Mar 2004 18:56:39 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA01800; Tue, 16 Mar 2004 18:58:31 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma001711; Tue, 16 Mar 2004 18:58:10 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id JAA24459 for linac-eng-list; Tue, 16 Mar 2004 09:41:10 -0600 (CST) Received: from mail14.messagelabs.com (mail14.messagelabs.com [212.125.75.19]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id JAA24446 for ; Tue, 16 Mar 2004 09:41:06 -0600 (CST) Received: (qmail 11430 invoked from network); Tue, 16 Mar 2004 15:40:33 +0000 Received: from host217-37-197-245.in-addr.btopenworld.com (HELO CHEXCHANGE1.cromwellhospital.com) (217.37.197.245) by server-16.tower-14.messagelabs.com with SMTP; Tue, 16 Mar 2004 15:40:33 +0000 Received: by CHEXCHANGE1.cromwellhospital.com with Internet Mail Service (5.5.2653.19) id ; Tue, 16 Mar 2004 15:44:48 +0000 Date: Tue, 16 Mar 2004 15:44:46 +0000 From: Kerry Clark Subject: RE: Millennium mlc Sender: owner-linac-eng@plato.aristotle.net To: "'Lockhart, Ryan'" , 'clinac listserve' Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_KjqTVkpXy3B3qY94HvogMw)" Precedence: bulk X-VirusChecked: Checked X-Env-Sender: Kerry.Clark@Cromwellhospital.com X-Msg-Ref: server-16.tower-14.messagelabs.com!1079451633!5180272 X-StarScan-Version: 5.1.15; banners=cromwellhospital.com,-,- X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 16 Mar 2004 15:44:46 +0000 From: Kerry Clark Subject: RE: Millennium mlc Sender: owner-linac-eng@plato.aristotle.net To: "'Lockhart, Ryan'" , 'clinac listserve' X-VirusChecked: Checked X-Env-Sender: Kerry.Clark@Cromwellhospital.com X-Msg-Ref: server-16.tower-14.messagelabs.com!1079451633!5180272 X-StarScan-Version: 5.1.15; banners=cromwellhospital.com,-,- X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_KjqTVkpXy3B3qY94HvogMw) Content-type: text/plain; charset=iso-8859-1 your secondary feedback may be fine, it may be telling you that the encoder on A49 may be going (although the ones I have seen go usually have a hard fault and the leaf is defiantly out of position). Have a look at the leaves in the head to see if one is out of position, or swap the motor. have fun Kerry -----Original Message----- From: Lockhart, Ryan [mailto:LockhartR@covhealth.com] Sent: 16 March 2004 13:49 To: 'clinac listserve' Subject: Millenium mlc We've got a problem with a millenium 120 MLC on a 21EX. Several times a day, we get a secondary feedback error on leaf A49. The error will show up in the middle of treatment and it will flicker on and off. Sometimes it clears itself, other times it has to be cleared by switching to another field and then back again. It can happen many times in one treatment. I have tried watching the secondary feedback values while running autocycles and the value on that leaf never looks out of step with the other leaves. I've also removed the secondary init. files. Does anybody have any ideas besides changing the softpot (which I'm ordering today)? I'll probably change the motor for that leaf since motors can cause some odd faults. Thanks. Ryan Lockhart Covenant Medical Center Waterloo, IA ________________________________________________________________________ This e-mail has been scanned for all viruses by Star Internet. The service is powered by MessageLabs. For more information on a proactive anti-virus service working around the clock, around the globe, visit: http://www.star.net.uk ________________________________________________________________________ ************************************************************************* Privileged or Confidential Information may be contained in this message. If you are not the addressee of this message (or responsible for its delivery to the addressee), you may not review or copy it, deliver it to anyone else or use information in it. In such a case, you should destroy this message and kindly notify the sender by reply email. Internet communications are not secure and therefore the Cromwell Hospital does not accept legal responsibility for the contents of this message. Although the Cromwell Hospital operates anti-virus programs, it does not accept responsibility for any damage whatsoever that is caused by viruses being passed. Opinions, conclusions and other information in this message that do not relate to the official business of the Cromwell Hospital are neither given nor endorsed by it. Thank you. ************************************************************************* ________________________________________________________________________ This e-mail has been scanned for all viruses by Star Internet. The service is powered by MessageLabs. For more information on a proactive anti-virus service working around the clock, around the globe, visit: http://www.star.net.uk ________________________________________________________________________ --Boundary_(ID_KjqTVkpXy3B3qY94HvogMw) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: quoted-printable = Millenium=20mlc
your=20 secondary=20feedback=20may=20be=20fine,=20it=20may=20be=20telling=20you=20= that=20the=20encoder=20on=20A49=20 may=20be=20going=20(although=20the=20ones=20I=20have=20seen=20go=20usually= =20have=20a=20hard=20fault=20and=20the=20 leaf=20is=20defiantly=20out=20of=20position).
Have=20a=20 look=20at=20the=20leaves=20in=20the=20head=20to=20see=20if=20one=20is=20ou= t=20of=20position,=20or=20swap=20the=20 motor.
 =20
have=20 fun
Kerry
=20=20-----Original=20Message-----
From:=20Lockhart,=20= Ryan=20 =20=20[mailto:LockhartR@covhealth.com]
Sent:=2016=20March=202004= =20 =20=2013:49
To:=20'clinac=20listserve'
Subject:=20Mill= enium=20 =20=20mlc

=20=20

We've=20got=20a=20problem=20with=20= a=20millenium=20120=20MLC=20on=20a=20 =20=2021EX. =20Several=20times=20a=20day,=20we=20get=20a=20secondary=20= feedback=20error=20on=20leaf=20 =20=20A49. =20The=20error=20will=20show=20up=20in=20the=20middle=20of= =20treatment=20and=20it=20will=20 =20=20flicker=20on=20and=20off. =20Sometimes=20it=20clears=20itself,=20= other=20times=20it=20has=20to=20be=20 =20=20cleared=20by=20switching=20to=20another=20field=20and=20then=20back=20= again. =20It=20can=20happen=20 =20=20many=20times=20in=20one=20treatment. =20I=20have=20tried=20watc= hing=20the=20secondary=20 =20=20feedback=20values=20while=20running=20autocycles=20and=20the=20value= =20on=20that=20leaf=20never=20 =20=20looks=20out=20of=20step=20with=20the=20other=20leaves. =20I've=20= also=20removed=20the=20secondary=20 =20=20init.=20files.

=20=20

Does=20anybody=20have=20any=20ide= as=20besides=20changing=20the=20 =20=20softpot=20(which=20I'm=20ordering=20today)? =20I'll=20probably=20= change=20the=20motor=20for=20 =20=20that=20leaf=20since=20motors=20can=20cause=20some=20odd=20faults.

=20=20

Thanks.=20

=20=20

Ryan=20Lockhart=20
Covenant=20Medical=20Center=20
Waterloo,=20 =20=20IA=20 =20=20


____________________________________________________________= ____________
This=20 =20=20e-mail=20has=20been=20scanned=20for=20all=20viruses=20by=20Star=20In= ternet.=20The
service=20is=20 =20=20powered=20by=20MessageLabs.=20For=20more=20information=20on=20a=20pr= oactive
anti-virus=20 =20=20service=20working=20around=20the=20clock,=20around=20the=20globe,=20= visit:
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________________________________________________________________________ This=20e-mail=20has=20been=20scanned=20for=20all=20viruses=20by=20Star=20I= nternet.=20The
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Privileged=20or=20Confidential=20Info= rmation=20may=20be=20contained=20in=20this=20message.=20=20If=20you=20are=20= not=20the=20addressee=20of=20this=20message=20(or=20responsible=20for=20it= s=20delivery=20to=20the=20addressee),=20you=20may=20not=20review=20or=20co= py=20it,=20deliver=20it=20to=20anyone=20else=20or=20use=20information=20in= =20it.=20=20In=20such=20a=20case,=20you=20should=20destroy=20this=20messag= e=20and=20kindly=20notify=20the=20sender=20by=20reply=20email.


Internet=20communications=20are=20not= =20secure=20and=20therefore=20the=20Cromwell=20Hospital=20does=20not=20acc= ept=20legal=20responsibility=20for=20the=20contents=20of=20this=20message.= =20=20Although=20the=20Cromwell=20Hospital=20operates=20anti-virus=20progr= ams,=20it=20does=20not=20accept=20responsibility=20for=20any=20damage=20wh= atsoever=20that=20is=20caused=20by=20viruses=20being=20passed.=20=20Opinio= ns,=20conclusions=20and=20other=20information=20in=20this=20message=20that= =20do=20not=20relate=20to=20the=20official=20business=20of=20the=20Cromwel= l=20Hospital=20are=20neither=20given=20nor=20endorsed=20by=20it.=20=20Than= k=20you.=20

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--Boundary_(ID_KjqTVkpXy3B3qY94HvogMw)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUO00EHIMBDR4@hubbard.azu.nl>; Tue, 16 Mar 2004 19:35:38 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004031619353717417 ; Tue, 16 Mar 2004 19:35:37 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA07835; Tue, 16 Mar 2004 19:37:29 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma007802; Tue, 16 Mar 2004 19:37:01 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id KAA25717 for linac-eng-list; Tue, 16 Mar 2004 10:34:57 -0600 (CST) Received: from dalwhinnie.chhlth.govt.nz ([203.163.70.2]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id KAA25711 for ; Tue, 16 Mar 2004 10:34:53 -0600 (CST) Received: from mailsweeper2.chhlth.govt.nz (mailsweeper2.chhlth.govt.nz [159.117.18.162]) by dalwhinnie.chhlth.govt.nz (8.12.8/8.12.5) with ESMTP id i2GGbJfU002835 for ; Wed, 17 Mar 2004 05:37:19 +1300 Received: from SMTPGATE.CHHLTH.GOVT.NZ (unverified) by mailsweeper2.chhlth.govt.nz (Content Technologies SMTPRS 4.3.1) with ESMTP id for ; Wed, 17 Mar 2004 05:34:25 +1300 Received: from CHCH2-MTA by SMTPGATE.CHHLTH.GOVT.NZ with Novell_GroupWise; Wed, 17 Mar 2004 05:34:50 +1300 Date: Wed, 17 Mar 2004 05:34:40 +1300 From: Dave Pinchin Subject: RE: Definition of Downtime (Uptime) Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.0.4 Content-type: text/plain; charset=us-ascii Content-disposition: inline Content-transfer-encoding: 8bit Precedence: bulk X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id KAA25712 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 17 Mar 2004 05:34:40 +1300 From: Dave Pinchin Subject: RE: Definition of Downtime (Uptime) Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Content-disposition: inline X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id KAA25712 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f G'day, Here's my 2c worth. Joan has an interesting point. If say 16e was out. the machine may (or may not) be considered as 'unavailable for treatment'. The chances of a patient requiring 16e treatments is not great. So lets take the 'machine available' line. OK. - only one energy not working - machine still available. OK - but what if it's 6x or 18x - what then......... There is another thing to consider which *may* make the above simpler to deal with. One writer suggested that the administrators didn't see a PV down situation. We should make sure that we bias our figures of downtime using the 'Machine FULLY available' (ready in ALL respects). This is important because: 1/ Who are we to know if there is a 16e patient today? We are only lowly tweekers. 2/ Even PV is a VITAL treatment tool. We had an issue here where there was a discrepancy between the planning machine and the actual treatment. PV picked up the bad treatment. Is a *bad* treatment any better (or worse) than a missed treatment. The convenience of PV may mean that if it were out and a film was required, it may be skipped as 'too hard'. 3/ Our administrators see a reliable machine. Our salaries (and parts budgets) are related to the 99% uptime. Therefore they know we just sit in our office all day playing freecell and waiting for the machine to fail. If the figures were more like 89.7% they would appreciate the extra hrs we put in, add extra $$$$ to the parts budgets (and salaries????) and possibly (while I'm still dreaming) add an extra engineer or two. This may be why we are often considered as just lowly tweekers. There, That feels better already. :D >>> 16/03/04 23:46:01 >>> As you say, machine not down, treatment unaffected, therefore no downtime! Easy! But if it was a portal imaging system that was down, the urgency to repair is not there (a beam film can be taken) but an important part is missing. How is this recorded? Here it is invisible to the downtime figures but unfortunately not to the administrators! Rick St Thomas' Hospital London -----Original Message----- From: Joan Hatton [mailto:Joan_Hatton@health.qld.gov.au] Sent: 16 March 2004 00:35 To: Graham.Chalmers@uhb.nhs.uk; linac-eng@plato.aristotle.net; nicholas.norris@mpdoch.org Subject: RE: Definition of Downtime (Uptime) Interesting that the replies refer to "the machine" being available for clinical use, implying all beam energies available. If one electron energy were not available, would you then say "the machine" is not complete and therefore down? We had a spell of 2-3weeks when 15MeV was out, and we waited for a specific part. Not a real problem for clinical treatments with a matched linac, but if we take the full functionality of machine approach, the downtime is distorted. Joan Joan Hatton Medical Physics Department The Townsville Hospital Queensland 4810 Australia Tel: +61 7 4796 1042 Fax: +61 7 4796 1151 >>> Graham Chalmers Monday, 15 March 2004 7:42:54 pm >>> Dear Nicholas This has been a perpetual issue. I would suggest you need to determine what you want downtime figures for. If you have units under contracts you will have the manufacturer's definitions. The difficulty I have with downtimes is that a downtime value may be determined by either the reliability of the equipment, parts availability, efficiency of a manufacturer to supply and fit replacement parts, efficiency of in-house maintenance team and a global figure may not fully suffice. Nevertheless most of us don't have the time to do detailed analysis as the time spent may outweigh the gain (if any) especially if the downtimes are generally good. I calculate the availability here in the following way:- Available hours for clinical use /month = [ Working hours /month (e.g. Mon-Fri 7.45 hours/day) - planned QC and Maintenance hours ] So % availability = (available hours - downtime) / available hours Anything that is negotiated e.g. time to repair, change parts is not counted as downtime as no clinical slots are lost, likewise loss of overall power to the department With best wishes Graham Chalmers Graham Chalmers Radiotherapy Physics University Hospital Birmingham NHS Trust Birmingham B15 2TH 0121-627-2266 DISCLAIMER: This e-mail contains proprietary information some or all of which may be confidential or legally privileged. It is for the exclusive use of the intended recipient(s) only. If an addressing or transmission error has misdirected this e-mail and you are not the intended recipient(s), please notify the author by replying to this e-mail. If you are not the intended recipient you must not use, disclose, distribute, copy, print, or rely on this e-mail, as this may be unlawful. -----Original Message----- From: Nicholas Norris [mailto:nnorris@mpdoch.org] Sent: 13 March 2004 13:00 To: linac-eng@plato.aristotle.net Subject: Definition of Downtime (Uptime) I am looking for a definition of downtime (uptime) for radiotherapy machines. Is there a national agreed definition for downtime. How do different centres define it? Nicholas Norris Chief Engineer Medical Physics Department Oldchurch Hospital BHR Hospitals NHS Trust Romford Essex. RM7 0BE. Tel: 01708 506442 Fax: 01708 708485 e-mail : nicholas.norris@mpdoch.org The information contained in this message and/or any attachments(s) may be of a private and confidential nature, and is intended solely for the attention of the addressee. 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Any views or opinions expressed in this email (unless otherwise stated) may not represent those of Canterbury District Health Board **********************************************************************  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUO00EPQMK6R4@hubbard.azu.nl> for jkok@sims-ms-daemon; Tue, 16 Mar 2004 19:40:56 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004031619405317510 for ; Tue, 16 Mar 2004 19:40:53 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA08777 for ; Tue, 16 Mar 2004 19:42:45 +0100 (MET) Received: from smtp.jiscmail.ac.uk(130.246.192.48) by armstrong.azu.nl via smap (V1.3) id xma008704; Tue, 16 Mar 2004 19:42:08 +0100 Received: from LISTSERV.JISCMAIL.AC.UK (jiscmail.ac.uk) by smtp.jiscmail.ac.uk (LSMTP for Windows NT v1.1b) with SMTP id <2.000DD7C2@smtp.jiscmail.ac.uk>; Tue, 16 Mar 2004 18:40:11 +0000 Received: from JISCMAIL.AC.UK by JISCMAIL.AC.UK (LISTSERV-TCP/IP release 1.8e) with spool id 34474527 for MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK; Tue, 16 Mar 2004 18:40:11 +0000 Received: from 130.246.192.53 by JISCMAIL.AC.UK (SMTPL release 1.0i) with TCP; Tue, 16 Mar 2004 18:40:11 +0000 (GMT) Received: from mail23.nhs.uk (mail23.nhs.uk [62.6.139.221]) by fili.jiscmail.ac.uk (8.12.8/8.12.8) with ESMTP id i2GIe7Y8025848 for ; Tue, 16 Mar 2004 18:40:07 +0000 (GMT) Received: from [10.191.254.3] (helo=relayint2.nhs.uk) by mail23.nhs.uk with esmtp (MTC MTA) id 1B3JTu-0002qt-Ef for medical-physics-engineering@jiscmail.ac.uk; Tue, 16 Mar 2004 18:40:02 +0000 Received: from relay.nhs.uk (194.62.42.142) by relayint2.nhs.uk (Syntegra-I2 7.0.008) id 4039DF71005FFC72 for medical-physics-engineering@jiscmail.ac.uk; Tue, 16 Mar 2004 18:40:02 +0000 Received: from phnt39.derriford.phnt.swest.nhs.uk (195.107.1.43) by relay.nhs.uk (Syntegra-2 7.0.008) (authenticated as cl2-mail_derriford_phnt_swest_nhs_uk@es2002.nhs.uk) id 4057059300029AE8 for medical-physics-engineering@jiscmail.ac.uk; Tue, 16 Mar 2004 18:40:02 +0000 Received: from phnt04.derriford.phnt.swest.nhs.uk (EHLO PHNT04.derriford.phnt.swest.nhs.uk) (10.1.15.104) by phnt39.derriford.phnt.swest.nhs.uk with SMTP (im); Tue, 16 Mar 2004 18:39:56 +0000 (GST) Date: Tue, 16 Mar 2004 18:39:54 +0000 From: "CASEBOW Mike, Principal Physicist" Subject: Re: Dear All, Sender: Discussion amongst academic Medical Physics in the UK To: MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK Reply-to: Discussion amongst academic Medical Physics in the UK Message-id: MIME-version: 1.0 Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: quoted-printable Precedence: list X-RAL-MFrom: X-RAL-Connect: content-class: urn:content-classes:message X-MimeOLE: Produced By Microsoft Exchange V6.0.6249.0 Thread-Topic: Dear All, Thread-Index: AcQCzLhO9Sna+ZKpTKOB8UntR81towIsrwBQ X-CCLRC-SPAM-report: -4.9 : BAYES_00 X-Scanned-By: MIMEDefang 2.38 *** EOOH *** Date: Tue, 16 Mar 2004 18:39:54 +0000 From: "CASEBOW Mike, Principal Physicist" Subject: Re: Dear All, Sender: Discussion amongst academic Medical Physics in the UK To: MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK Reply-to: Discussion amongst academic Medical Physics in the UK X-RAL-MFrom: X-RAL-Connect: content-class: urn:content-classes:message X-MimeOLE: Produced By Microsoft Exchange V6.0.6249.0 Thread-Topic: Dear All, Thread-Index: AcQCzLhO9Sna+ZKpTKOB8UntR81towIsrwBQ X-CCLRC-SPAM-report: -4.9 : BAYES_00 X-Scanned-By: MIMEDefang 2.38 Jim I've only just got round to reading recent Jiscmail, hence this late = reply. I doubt if my experiences 10 years ago in designing the rooms = here will add much, but here goes anyway.=20 Heavy doors slow down treatments and are, I'd have thought, = claustophobic for the patient - should if possible be avoided. Linac manufacturers certainly used to give free advice on designs. Neutron scatter can be a major problem and doubles between 15 and 18 MV = x-rays. So go for the lowest (upper) energy that can be tolerated. We = used to have 6 and 15MV in the old hospital, now have 6 and 10MV - and = find that when optimising treatment plans, the 10MV option is used more = frequently than the old 15MV. I used NCRP 51 and 79, to design a relatively short maze (no door) and a = single bend. Radiation from the isocentre should require two further = scatters in the maze before reaching the entrance.=20 Head leakage and patient scatter entering the maze can be reduced by = making the c/s area of the maze as small as possible, as it enters the = room. Eg: use of lintels, etc. Remember that air supplies are usually = ducted above a false ceiling in the maze, and can have quite a large c/s = themselves. The problem with protection calculations is that it's a lot more = expensive to 'add a bit more' after it's built so if possible include a = safety factor. We were a bit constrained on size so our mazes are fairly = short and I was a bit worried that scatter could be a problem. I = therefore discussed with one protection manufacturer the possibility of = retro-fitting some absorbers (on the first maze wall from the room) = consisting of slats of Pb like vertical blinds, that could 'trap' = scatter from the room. This wasn't needed, and I haven't seen it = described anywhere either. The maze is often the weak point in a design. We routinely monitor the = dose here using TLD personnel monitors to confirm low doses in practice. Mike -----Original Message----- From: Jim Warrington [mailto:Jim.Warrington@ICR.AC.UK] Sent: 05 March 2004 16:12 To: MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK Subject: Dear All, Dear All, After some internal debate on the question of substituting automatic doors for the traditional 'tunnels of doom' known as mazes, in a four linac bunker extension here, I would welcome any comments from list members on their experiences with this key aspect of bunker design. Engineering of such barriers has improved over the last ten years from the 'grinding sliders' that we came to know and hate in the past. Doors are commonly disliked intensely by many in this field, but given the improvements and perhaps results of the odd internal survey of patient and staff perceptions, it would be very helpful to me and I'm sure, many others, to hear from you. I don't want to get too bogged down in shielding aspects of the higher energy 'neutron generating' machines, and acceptable dose levels at the ends of mazes, but would welcome comments on this from RPA's. Space, time and lack of exercise beckon! Many thanks, Jim --=20 This email has been electronically scanned using=20 DynaComm i:mail filtering software. If you have any questions please email=20 information.security@phnt.swest.nhs.uk Tony Daniel=20 Sam Shayer Information Security Team  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUO00F7HN4UGF@hubbard.azu.nl>; Tue, 16 Mar 2004 19:53:20 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004031619531717663 ; Tue, 16 Mar 2004 19:53:17 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA10677; Tue, 16 Mar 2004 19:55:09 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma010547; Tue, 16 Mar 2004 19:54:24 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id KAA26541 for linac-eng-list; Tue, 16 Mar 2004 10:58:20 -0600 (CST) Received: from mail20.nhs.uk (mail20.nhs.uk [62.6.139.212]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id KAA26537 for ; Tue, 16 Mar 2004 10:58:18 -0600 (CST) Received: from [10.191.254.3] (helo=relayint1.nhs.uk) by mail20.nhs.uk with esmtp (MTC MTA) id 1B3HMF-0005tl-3L for linac-eng@plato.aristotle.net; Tue, 16 Mar 2004 16:23:59 +0000 Received: from relay.nhs.uk (194.62.42.142) by relayint1.nhs.uk (Syntegra-I1 7.0.008) id 4039DF370055481C for linac-eng@plato.aristotle.net; Tue, 16 Mar 2004 16:23:59 +0000 Received: from beijing.relay.grampian.scot.nhs.uk (10.251.30.7) by relay.nhs.uk (Syntegra-2 7.0.008) (authenticated as relay_grampian_scot_nhs_uk@es2002.nhs.uk) id 405705930001A262; Tue, 16 Mar 2004 16:23:58 +0000 Received: from arh-mail2.arh.grampian.scot.nhs.uk ([9.16.60.28]) by beijing.relay.grampian.scot.nhs.uk with Microsoft SMTPSVC(5.0.2195.6713) ; Tue, 16 Mar 2004 16:11:14 +0000 Received: by arh-mail2.arh.grampian.scot.nhs.uk with Internet Mail Service (5.5.2657.72) id ; Tue, 16 Mar 2004 16:10:10 +0000 Date: Tue, 16 Mar 2004 16:14:34 +0000 From: David.Smith@arh.grampian.scot.nhs.uk Subject: RE: Millenium mlc [Scanned By SOPHOS Anti-Virus] Sender: owner-linac-eng@plato.aristotle.net To: LockhartR@covhealth.com Cc: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; CHARSET=US-ASCII Precedence: bulk X-OriginalArrivalTime: 16 Mar 2004 16:11:14.0093 (UTC) FILETIME=[4DFE2DD0:01C40B71] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 16 Mar 2004 16:14:34 +0000 From: David.Smith@arh.grampian.scot.nhs.uk Subject: RE: Millenium mlc [Scanned By SOPHOS Anti-Virus] Sender: owner-linac-eng@plato.aristotle.net To: LockhartR@covhealth.com Cc: linac-eng@plato.aristotle.net X-OriginalArrivalTime: 16 Mar 2004 16:11:14.0093 (UTC) FILETIME=[4DFE2DD0:01C40B71] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Ryan, We have had this problem several times with different machines and replacing the soft pot has always cured it. Tough luck, you will have to remove the carriage to get at that leaf. We park our MLC in a different position every night to ensure that all leaves will at least move once a day and not lie in the same place and cause indents in the soft pot. Dave Smith > -----Original Message----- > From: Lockhart, Ryan [SMTP:LockhartR@covhealth.com] > Sent: Tuesday, March 16, 2004 1:49 PM > To: 'clinac listserve' > Subject: Millenium mlc [Scanned By SOPHOS Anti-Virus] > > We've got a problem with a millenium 120 MLC on a 21EX. Several times a > day, we get a secondary feedback error on leaf A49. The error will show > up in the middle of treatment and it will flicker on and off. Sometimes > it clears itself, other times it has to be cleared by switching to another > field and then back again. It can happen many times in one treatment. I > have tried watching the secondary feedback values while running autocycles > and the value on that leaf never looks out of step with the other leaves. > I've also removed the secondary init. files. > > Does anybody have any ideas besides changing the softpot (which I'm > ordering today)? I'll probably change the motor for that leaf since > motors can cause some odd faults. > > Thanks. > > Ryan Lockhart > Covenant Medical Center > Waterloo, IA >  1,, X-Coding-System: iso-latin-1-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUP00ERWDYHEQ@hubbard.azu.nl>; Wed, 17 Mar 2004 05:32:48 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004031705324023556 ; Wed, 17 Mar 2004 05:32:40 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id FAA29865; Wed, 17 Mar 2004 05:34:33 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma029845; Wed, 17 Mar 2004 05:34:05 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id UAA09373 for linac-eng-list; Tue, 16 Mar 2004 20:40:41 -0600 (CST) Received: from hk.sina.com.hk ([202.85.139.116]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id UAA09365 for ; Tue, 16 Mar 2004 20:40:29 -0600 (CST) Received: (qmail 17946 invoked by uid 99); Wed, 17 Mar 2004 02:30:21 +0000 Date: Wed, 17 Mar 2004 10:30:20 +0800 From: =?big5?B?ZmFpY2hpY2hhbg==?= Subject: =?big5?B?UkU6eWxkIGZhdWx0cyA2MDAgY2Q=?= Sender: owner-linac-eng@plato.aristotle.net To: =?big5?B?Ik5lbHNvbiAgTGFjc2luYSIgIA==?= Cc: linac-eng@plato.aristotle.net Message-id: <20040317023021.17944.qmail@hk.sina.com.hk> MIME-version: 1.0 Content-type: text/plain; charset=big5 Content-disposition: inline Content-transfer-encoding: 8BIT Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 17 Mar 2004 10:30:20 +0800 From: =?big5?B?ZmFpY2hpY2hhbg==?= Subject: =?big5?B?UkU6eWxkIGZhdWx0cyA2MDAgY2Q=?= Sender: owner-linac-eng@plato.aristotle.net To: =?big5?B?Ik5lbHNvbiAgTGFjc2luYSIgIA==?= Cc: linac-eng@plato.aristotle.net Content-disposition: inline X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hi: You can check any loosen of magnetron driving motor and signal of Target I that sometimes touches lead shielding at radiation head I have experienced. Fai > >Hello group.... > >I am getting intermittent yld faults on a 600 cd.....We have calibrated >the servo and during the treatment day we have no problems with the >unit....At night when our dosimetrist runs our IMRT QA's he >consistently gets them.....Any suggestions on what's causing >this...(Maggie replaced just five months ago.) >AFC good...Ball tuner good....Line stretcher good....DQ 55%.....Maggie >voltage good (current at 91mA)....PRF calibrated..... >CONFIDENTIALITY NOTICE: This email and any attachments may contain confidential and >privileged information for the use of the designated recipients named above. If you are not >the intended recipient, you are hereby notified that you have received this communication in >error and that any review, disclosure, dissemination, distribution or copying of it or its contents >is prohibited. If you have received this communication in error, please destroy all copies of this >communication and any attachments. >. > ========================================================================================== ¤é¤é§K¶OÀH®É¾Ç­^»y/´¶³q¸Ü - http://adimages.sina.com.hk/Lingua_0304.html ¼s§i¤k¯«¥ô§AÚ» ÂŪÞMP3¾÷µ¥§A©ð - http://adawards.sina.com.hk/1/vote.html ³ü¶g¥ZÀY±ø¡G §õ¿A·¢ÅÜÅ]³N¡@¹q¬Õ¤@¾Qµf¥Í - http://adimages.sina.com.hk/Mag.html  1,, X-Coding-System: iso-latin-1-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUP00GLKGYBN1@hubbard.azu.nl>; Wed, 17 Mar 2004 06:37:25 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004031706372224171 ; Wed, 17 Mar 2004 06:37:22 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id GAA08138; Wed, 17 Mar 2004 06:39:15 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma008040; Wed, 17 Mar 2004 06:38:44 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id UAA09476 for linac-eng-list; Tue, 16 Mar 2004 20:53:50 -0600 (CST) Received: from hk.sina.com.hk ([202.85.139.109]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id UAA09472 for ; Tue, 16 Mar 2004 20:53:30 -0600 (CST) Received: (qmail 18024 invoked by uid 99); Wed, 17 Mar 2004 10:43:53 +0000 Date: Wed, 17 Mar 2004 10:43:53 +0800 From: =?big5?B?ZmFpY2hpY2hhbg==?= Subject: =?big5?B?UkU6UmU6IFJFOlJlOiBMb3cgZG9zZSByYXRl?= Sender: owner-linac-eng@plato.aristotle.net To: =?big5?B?Sm9uYXRoYW4gQ2hhbiAg?= Message-id: <20040317104353.18023.qmail@hk.sina.com.hk> MIME-version: 1.0 Content-type: text/plain; charset=big5 Content-disposition: inline Content-transfer-encoding: 8BIT Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 17 Mar 2004 10:43:53 +0800 From: =?big5?B?ZmFpY2hpY2hhbg==?= Subject: =?big5?B?UkU6UmU6IFJFOlJlOiBMb3cgZG9zZSByYXRl?= Sender: owner-linac-eng@plato.aristotle.net To: =?big5?B?Sm9uYXRoYW4gQ2hhbiAg?= Content-disposition: inline X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Thanks your helpful advice. Found value of gun resistor is about 33k rather than normal value of 4k4. I believe it is cause of problem. fai >The ceiling PRF is 400, any reading higher than 400 means you will get 400 only. >As someone suggested, pls check the gun resistor. Pls note that the "nominal" value stamped on the resistor body is not the resistance value you will get. It is only before "burn-in". My memory is fading, but for 4k4, you probably will get around 2kx. >Another way to check if it is the gun resistor causing this low dose rate problem is to check your morning checkout (but this will only help if you keep long records...). If you notice any sudden change in Target I, then you will have the clue. >Or, you may temporarily simply short out the gun resistor, and see what new target current you can have. If this is significantly different, you gun resistor is bad. >Have you checked the magnet? Is it an electromagnet? Is the current (pls directly measure it) the same? Does the output voltage of the electromagnet differ significantly from old values? > >Jonathan > >----- Original Message ----- >From: faichichan >To: Jonathan Chan >Cc: linac-eng@plato.aristotle.net >Sent: Tuesday, March 16, 2004 09:01:47 +0800 >Subject: RE:Re: Low dose rate > > >Hi Jonathan: >The things you suggested I have already done. But what is maggy? > >Thanks >Fai > > > > >>1. What is the Calculated PRF, as noted in the morning checkout? >>2. Have you done the frequency calibration? Just drop the machine to standby mode (in main menu), and then press F2 (diagnostic) to launch the freq. calibration. See what the machine gives up. Clinac should give you a +15% (approx.) margin if not reaching the ceiling PRF. >>3. If your machine has reached the ceiling PRF, then probably a new maggy is needed. >> >>Jonathan Chan >>----- Original Message ----- >>From: faichichan >>To: linac-eng@plato.aristotle.net >>Sent: Saturday, March 13, 2004 09:36:30 +0800 >>Subject: >> >> >>Hi all: >>I have a 600C 7 years ago that has a problem of low dose rate even at dose servo off, e.g. set dose rate to 400, actual dose rate only around 390 at dose servo off. I have tried to replace a new magnetron and have manually tuned up AFC to get about same dose rate. What should I do to fix it? >> >>fai >> >> >> >>========================================================================================== >>?????¡ÓK?O?H?????^?y/???q?? - >>http://adimages.sina.com.hk/Lingua_0304.html >>???z?H?A???U?? - ¢FD??Ps??????C?? - >>http://sms.sina.com.hk/game_index.html >> >> >> >> >>Jonathan Chan >>Queen Mary Hospital >> >>. >> > > >. > ========================================================================================== ¤é¤é§K¶OÀH®É¾Ç­^»y/´¶³q¸Ü - http://adimages.sina.com.hk/Lingua_0304.html ¼s§i¤k¯«¥ô§AÚ» ÂŪÞMP3¾÷µ¥§A©ð - http://adawards.sina.com.hk/1/vote.html ³ü¶g¥ZÀY±ø¡G §õ¿A·¢ÅÜÅ]³N¡@¹q¬Õ¤@¾Qµf¥Í - http://adimages.sina.com.hk/Mag.html  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUP00C1NVQTAE@hubbard.azu.nl>; Wed, 17 Mar 2004 11:57:22 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004031711571430184 ; Wed, 17 Mar 2004 11:57:14 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id LAA22583; Wed, 17 Mar 2004 11:59:07 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma022378; Wed, 17 Mar 2004 11:58:19 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id CAA03514 for linac-eng-list; Wed, 17 Mar 2004 02:50:59 -0600 (CST) Received: from mwinf3004.me.freeserve.com (smtp1.freeserve.com [193.252.22.158]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id CAA03509 for ; Wed, 17 Mar 2004 02:50:56 -0600 (CST) Received: from wwinf3002 (wwinf3002 [172.22.159.29]) by mwinf3004.me.freeserve.com (SMTP Server) with ESMTP id 563F71800091; Wed, 17 Mar 2004 09:50:24 +0100 (CET) Date: Wed, 17 Mar 2004 09:50:24 +0100 (CET) From: AJM@amcgeever.fsnet.co.uk Subject: Re: RE: Definition of Downtime (Uptime) Sender: owner-linac-eng@plato.aristotle.net To: Richard.Newby@gstt.sthames.nhs.uk, Graham.Chalmers@uhb.nhs.uk, Joan_Hatton@health.qld.gov.au, linac-eng@plato.aristotle.net, nicholas.norris@mpdoch.org Reply-to: AJM@amcgeever.fsnet.co.uk Message-id: <11907369.1079513424336.JavaMail.www@wwinf3002> MIME-version: 1.0 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_cZaSpL2gO/IOrJ4BNRb1GQ)" Precedence: bulk X-Originating-IP: [213.122.185.148] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 17 Mar 2004 09:50:24 +0100 (CET) From: AJM@amcgeever.fsnet.co.uk Subject: Re: RE: Definition of Downtime (Uptime) Sender: owner-linac-eng@plato.aristotle.net To: Richard.Newby@gstt.sthames.nhs.uk, Graham.Chalmers@uhb.nhs.uk, Joan_Hatton@health.qld.gov.au, linac-eng@plato.aristotle.net, nicholas.norris@mpdoch.org Reply-to: AJM@amcgeever.fsnet.co.uk X-Originating-IP: [213.122.185.148] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f --Boundary_(ID_cZaSpL2gO/IOrJ4BNRb1GQ) Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: quoted-printable Here's my Two Cents worth. Take a treatment day say from 09:00 -1700hrs , i= f treatment still continues after that time......it's "Down Time". Alan > Message date : Mar 17 2004, 04:49 AM > From : Richard.Newby@gstt.sthames.nhs.uk > To : Graham.Chalmers@uhb.nhs.uk, Joan_Hatton@health.qld.gov.au, linac-eng= @plato.aristotle.net, nicholas.norris@mpdoch.org > Copy to :=20 > Subject : RE: Definition of Downtime (Uptime) >=20 As you say, machine not down, treatment unaffected, therefore no downtime! = Easy! But if it was a portal imaging system that was down, the urgency to r= epair is not there (a beam film can be taken) but an important part is miss= ing. How is this recorded? Here it is invisible to the downtime figures but= unfortunately not to the administrators! Rick St Thomas' Hospital London -----Original Message----- > From: Joan Hatton [mailto:Joan_Hatton@health.qld.gov.au] > Sent: 16 March 2004 00:35 > To: Graham.Chalmers@uhb.nhs.uk; linac-eng@plato.aristotle.net; nicholas.n= orris@mpdoch.org > Subject: RE: Definition of Downtime (Uptime) >=20 >=20 Interesting that the replies refer to "the machine" being available for cli= nical use, implying all beam energies available. If one electron energy we= re not available, would you then say "the machine" is not complete and ther= efore down? We had a spell of 2-3weeks when 15MeV was out, and we waited f= or a specific part. Not a real problem for clinical treatments with a matc= hed linac, but if we take the full functionality of machine approach, the d= owntime is distorted. Joan Joan Hatton > Medical Physics Department > The Townsville Hospital > Queensland 4810 > Australia Tel: +61 7 4796 1042 > Fax: +61 7 4796 1151 >=20 > >>> Graham Chalmers Monday, 15 March 2004 7:42:54 pm >>> >=20 Dear Nicholas This has been a perpetual issue. I would suggest you need to determine what= you want downtime figures for. If you have units under contracts you will = have the manufacturer's definitions. The difficulty I have with downtimes is that a downtime value may be determ= ined by either the reliability of the equipment, parts availability, effici= ency of a manufacturer to supply and fit replacement parts, efficiency of i= n-house maintenance team and a global figure may not fully suffice. Neverth= eless most of us don't have the time to do detailed analysis as the time sp= ent may outweigh the gain (if any) especially if the downtimes are generall= y good. I calculate the availability here in the following way:- Available hours for clinical use /month =3D [ Working hours /month (e.g. M= on-Fri 7.45 hours/day) - planned QC and Maintenance hours ] So % availability =3D (available hours - downtime) / available hours Anything that is negotiated e.g. time to repair, change parts is not counte= d as downtime as no clinical slots are lost, likewise loss of overall power= to the department With best wishes Graham Chalmers Graham Chalmers=20 Radiotherapy Physics University Hospital Birmingham NHS Trust Birmingham B15 2TH 0121-627-2266 DISCLAIMER: This e-mail contains proprietary information some or all of whi= ch may be confidential or legally privileged. It is for the exclusive use o= f the intended recipient(s) only. If an addressing or transmission error ha= s misdirected this e-mail and you are not the intended recipient(s), please= notify the author by replying to this e-mail. If you are not the intended = recipient you must not use, disclose, distribute, copy, print, or rely on t= his e-mail, as this may be unlawful. -----Original Message----- > From: Nicholas Norris [mailto:nnorris@mpdoch.org]=20 > Sent: 13 March 2004 13:00 > To: linac-eng@plato.aristotle.net > Subject: Definition of Downtime (Uptime) I am looking for a definition of downtime (uptime) for radiotherapy machine= s. Is there a national agreed definition for downtime. How do different centres define it? Nicholas Norris Chief Engineer Medical Physics Department Oldchurch Hospital BHR Hospitals NHS Trust Romford Essex. RM7 0BE. Tel: 01708 506442 Fax: 01708 708485 e-mail : nicholas.norris@mpdoch.org The information contained in this message and/or any attachments(s) may be = of a private and confidential nature, and is intended solely for the attent= ion of the addressee. If you have received this message in error or feel yo= u should not have been the intended recipient, please return it and any att= achments to the sender immediately. All messages relating to this communica= tion should then be deleted from your system. Unauthorised usage, copying, = disclosure or alteration of this message and/or attachment(s) is strictly p= rohibited. Barking, Havering and Redbridge Hospitals NHS Trust will not be = held responsible for any direct or indirect damages which may arise from al= teration of this message or any attachment(s), by a third party or resultin= g from the transmission of a virus.=20 > DISCLAIMER: This e-mail contains proprietary information some or all of w= hich may be confidential or legally privileged. It is for the exclusive use= of the intended recipient(s) only. If an addressing or transmission error = has misdirected this e-mail and you are not the intended recipient(s), plea= se notify the author by replying to this e-mail. If you are not the intende= d recipient you must not use, disclose, distribute, copy, print, or rely on= this e-mail, as this may be unlawful. >=20 > *************************************************************************= ********** > This email, including any attachments sent with it, is confidential and f= or the sole use of the intended recipient(s). This confidentiality is not w= aived or lost, if you receive it and you are not the intended recipient(s),= or if it is transmitted/received in error. >=20 > Any unauthorised use, alteration, disclosure, distribution or review of t= his email is prohibited. It may be subject to a statutory duty of confident= iality if it relates to health service matters. >=20 > If you are not the intended recipient(s), or if you have received this em= ail in error, you are asked to immediately notify the sender by telephone o= r by return email. You should also delete this email and destroy any hard c= opies produced. > *************************************************************************= ********** >=20 >=20 > -- **********************************************************************= ****************** Please note that as from the 6th of March 2004 the Trust= telephone number for both Guy's and St. Thomas' will now be 020 7188 7188.= **************************************************************************= ************** Disclaimer *************************************************= *************************************** This e-mail may contain confidentia= l and / or privileged information. Unless otherwise specified, the opinions= expressed herein do not necessarily represent those of Guy's and St Thomas= Hospital NHS Trust or any of its subsidiaries. If you are not the intended= recipient (or have received this e-mail in error) please notify the sender= and destroy this e-mail immediately. Any unauthorised copying, disclosure = or distribution of the material in this e-mail is strictly prohibited. ****= ***************************************************************************= *********=20 >=20 Freeserve AnyTime - HALF PRICE for the first 3 months - Save =A37.50 a mont= h=20 www.freeserve.com/anytime --Boundary_(ID_cZaSpL2gO/IOrJ4BNRb1GQ) Content-type: text/html Content-transfer-encoding: quoted-printable

Here's my Two Cents worth. Take a treatment day say from 09:00 -1700hrs = , if treatment still continues after that time......it's "Down Time".

Alan




> Message date : Mar 17 2004, 04:49 AM
> From : Ric= hard.Newby@gstt.sthames.nhs.uk
> To : Graham.Chalmers@uhb.nhs.uk, Joa= n_Hatton@health.qld.gov.au, linac-eng@plato.aristotle.net, nicholas.norris@= mpdoch.org
> Copy to :
> Subject : RE: Definition of Downtime = (Uptime)
>=20
As you say, machine no= t down, treatment unaffected, therefore no downtime! Easy! But if it was a = portal imaging system that was down, the urgency to repair is not there (a = beam film can be taken) but an important part is missing. How is this recor= ded? Here it is invisible to the downtime figures but unfortunately not to = the administrators!
 
Rick
St Thomas' Hospital
London
-----Original Message-----
> From: Joan Hatton [mai= lto:Joan_Hatton@health.qld.gov.au]
> Sent: 16 March 2004 00:35=
> To: Graham.Chalmers@uhb.nhs.uk; linac-eng@plato.aristotle.n= et; nicholas.norris@mpdoch.org
> Subject: RE: Definition of Do= wntime (Uptime)
>
>
Interesting that the replies refer to "the machine" being available fo= r clinical use, implying all beam energies available.  = If one electron energy were not available, would you then say "the machine"= is not complete and therefore down?  We had a spell of 2-3weeks when = 15MeV was out, and we waited for a specific part.  Not a real problem = for clinical treatments with a matched linac, but if we take the full funct= ionality of machine approach, the downtime is distorted.
 
Joan
 
Joan Hatton
> Medical Physics Department
> The Townsville = Hospital
> Queensland 4810
> Australia
 
Tel: +61 7 4796 1042
> Fax: +61 7 4796 1151
>
> >= ;>> Graham Chalmers Monday, 15 March 2004= 7:42:54 pm >>>
>

Dear Nicholas<= /FONT>

 <= /P>

This has been a perpe= tual issue. I would suggest you need to determine what you want downtime fi= gures for. If you have units under contracts you will have the manufacturer= 's definitions.

 <= /P>

The difficulty I have= with downtimes is that a downtime value may be determined by either the re= liability of the equipment, parts availability, efficiency of a manufacture= r to supply and fit replacement parts, efficiency of in-house maintenance t= eam and a global figure may not fully suffice. Nevertheless most of us don'= t have the time to do detailed analysis as the time spent may outweigh the = gain (if any) especially if the downtimes are generally good.=

 <= /P>

I calculate the avail= ability here in the following way:-

 <= /P>

Available hours for c= linical use /month  =3D [ Working hours /month (e.g. Mon-Fri 7.45 hour= s/day) - planned QC and Maintenance hours ]

 <= /P>

So % availability =3D= (available hours - downtime) / available hours

 <= /P>

Anything that is nego= tiated e.g. time to repair, change parts is not counted as downtime as no c= linical slots are lost, likewise loss of overall power to the department

 <= /P>

 <= /P>

With best wishes

<= SPAN style=3D"FONT-SIZE: 12pt; COLOR: navy"> 

Graham Chalmers

<= SPAN style=3D"FONT-SIZE: 12pt; COLOR: navy"> 

<= SPAN style=3D"FONT-SIZE: 12pt; COLOR: navy"> 

Graham Chalmers 

Radiotherapy Physics

University Hospital Birmingham<= FONT face=3D"Palatino Linotype" color=3Dnavy size=3D1> NHS Trust

Birmingham<= FONT face=3D"Palatino Linotype" color=3Dnavy size=3D1> B15 2TH<= /FONT>

0121-627-2266

<= SPAN style=3D"FONT-SIZE: 12pt; COLOR: navy"> 

<= SPAN style=3D"FONT-SIZE: 12pt; COLOR: navy"> 

<= SPAN style=3D"FONT-SIZE: 12pt; COLOR: navy"> 

<= SPAN style=3D"FONT-SIZE: 12pt; COLOR: navy"> 

DISCLAIMER: This e-ma= il contains proprietary information some or all of which may be confidentia= l or legally privileged. It is for the exclusive use of the intended recipi= ent(s) only. If an addressing or transmission error has misdirected this e-= mail and you are not the intended recipient(s), please notify the author by= replying to this e-mail. If you are not the intended recipient you must no= t use, disclose, distribute, copy, print, or rely on this e-mail, as this m= ay be unlawful.

----= -Original Message-----
> From: Nicholas Norris [mailto:nnorris@mpdoch.org]
> Sent: 13 March 2004 13:00
> To: linac-eng@plato.aristotle.net
> Subject: Definition of Downti= me (Uptime)

 

I am looking for a de= finition of downtime (uptime) for radiotherapy machines.

Is there a national a= greed definition for downtime.

How do different cent= res define it?

 <= /P>

 <= /P>

 <= /P>

Nicholas Norris

Chief Engineer=

Medical Physics Depar= tment

Oldchurch Hospital

BHR Hospitals NHS Tru= st

Romford=

Essex.<= /P>

RM7 0BE.

Tel: 01708 506442

Fax: 01708 708485

e-mail : nicholas.norris@mpdoch.org

 

The information contained in this = message and/or any attachments(s) may be of a private and confidential natu= re, and is intended solely for the attention of the addressee. If you have = received this message in error or feel you should not have been the intende= d recipient, please return it and any attachments to the sender immediately= . All messages relating to this communication should then be deleted from y= our system. Unauthorised usage, copying, disclosure or alteration of this m= essage and/or attachment(s) is strictly prohibited. Barking, Havering and R= edbridge Hospitals NHS Trust will not be held responsible for any direct or= indirect damages which may arise from alteration of this message or any at= tachment(s), by a third party or resulting from the transmission of a virus= .

 

> DISCLAIMER: This e-mail contains propri= etary information some or all of which may be confidential or legally privi= leged. It is for the exclusive use of the intended recipient(s) only. If an= addressing or transmission error has misdirected this e-mail and you are n= ot the intended recipient(s), please notify the author by replying to this = e-mail. If you are not the intended recipient you must not use, disclose, d= istribute, copy, print, or rely on this e-mail, as this may be unlawful.


>
> **********************************= *************************************************
> This email, inclu= ding any attachments sent with it, is confidential and for the sole use of = the intended recipient(s). This confidentiality is not waived or lost, if y= ou receive it and you are not the intended recipient(s), or if it is transm= itted/received in error.
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www.freeserve.com/anytime --Boundary_(ID_cZaSpL2gO/IOrJ4BNRb1GQ)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUS004MK054TX@hubbard.azu.nl>; Thu, 18 Mar 2004 15:27:14 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004031815270424775 ; Thu, 18 Mar 2004 15:27:04 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id PAA03601; Thu, 18 Mar 2004 15:28:56 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma003393; Thu, 18 Mar 2004 15:28:12 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id GAA26944 for linac-eng-list; Thu, 18 Mar 2004 06:13:03 -0600 (CST) Received: from web25108.mail.ukl.yahoo.com (web25108.mail.ukl.yahoo.com [217.12.10.56]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id GAA26940 for ; Thu, 18 Mar 2004 06:13:01 -0600 (CST) Received: from [203.218.227.6] by web25108.mail.ukl.yahoo.com via HTTP; Thu, 18 Mar 2004 12:12:29 +0000 (GMT) Date: Thu, 18 Mar 2004 12:12:29 +0000 (GMT) From: =?iso-8859-1?q?kim=20yeung?= Subject: Re: GFIL-ASIC ERR Sender: owner-linac-eng@plato.aristotle.net To: Linac-Eng Message-id: <20040318121230.1364.qmail@web25108.mail.ukl.yahoo.com> MIME-version: 1.0 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_nCk7jvqQMrsvvswOQ0b+Pw)" Content-transfer-encoding: 8BIT Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 18 Mar 2004 12:12:29 +0000 (GMT) From: =?iso-8859-1?q?kim=20yeung?= Subject: Re: GFIL-ASIC ERR Sender: owner-linac-eng@plato.aristotle.net To: Linac-Eng X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f --Boundary_(ID_nCk7jvqQMrsvvswOQ0b+Pw) Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 8bit Hi Colleagues, Varian Clinac 2300CD, Version 6. We have GFIL interlock with the error message showing ASIC ERR. The Gun Driver manual does not give a clear explanation of the ASIC ERR. Could anyone advise the meaning and the causes of the "ASIC ERROR"? Thanks in advance. Kim Yeung --------------------------------- Yahoo! Messenger - Communicate instantly..."Ping" your friends today! Download Messenger Now --Boundary_(ID_nCk7jvqQMrsvvswOQ0b+Pw) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: 8bit
Hi Colleagues,
 
                     Varian Clinac 2300CD, Version 6.
 
We have GFIL interlock with the error message showing ASIC ERR. The Gun Driver manual does not give a clear explanation of the ASIC ERR.
 
Could anyone advise the meaning and the causes of the "ASIC ERROR"?
 
Thanks in advance.
 
Kim Yeung 
 
 

Yahoo! Messenger - Communicate instantly..."Ping" your friends today! Download Messenger Now --Boundary_(ID_nCk7jvqQMrsvvswOQ0b+Pw)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUT00FHFYBH1W@hubbard.azu.nl>; Fri, 19 Mar 2004 16:42:57 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004031916425315772 ; Fri, 19 Mar 2004 16:42:53 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id QAA26819; Fri, 19 Mar 2004 16:44:47 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma026604; Fri, 19 Mar 2004 16:43:56 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id HAA17401 for linac-eng-list; Fri, 19 Mar 2004 07:37:44 -0600 (CST) Received: from email.med.yale.edu (email.med.yale.edu [130.132.232.16]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id HAA17397 for ; Fri, 19 Mar 2004 07:37:43 -0600 (CST) Received: from yale.edu (vitalip.med.yale.edu [130.132.213.170]) by email.med.yale.edu (PMDF V6.1-1 #30873) with ESMTP id <0HUT0LDKJSISQG@email.med.yale.edu> for linac-eng@plato.aristotle.net; Fri, 19 Mar 2004 08:37:42 -0500 (EST) Date: Fri, 19 Mar 2004 08:37:45 -0500 From: Peter Vitali Subject: Update:EXQ2 Interlock Sender: owner-linac-eng@plato.aristotle.net To: "Linac-Engineers, Listserver Mess" Message-id: <405AF7A2.52B79219@yale.edu> MIME-version: 1.0 X-Mailer: Mozilla 4.76 (Macintosh; U; PPC) Content-type: text/plain; charset=us-ascii; x-mac-type=54455854; x-mac-creator=4D4F5353 Content-transfer-encoding: 7bit Precedence: bulk X-Accept-Language: en X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 19 Mar 2004 08:37:45 -0500 From: Peter Vitali Subject: Update:EXQ2 Interlock Sender: owner-linac-eng@plato.aristotle.net To: "Linac-Engineers, Listserver Mess" X-Accept-Language: en X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Good morning all: Update: On our 21EX-S, #16 installed in May of 2002 we had to replace the relay on the Transverse Beam Position Servo Board (20) in the Varian Card rack. About 6 weeks ago we replaced the relay on the Radial Beam Position Servo Board (19). There must be a bad batch of these relay out there. Problem shows up in about 18 months. These are solid state relays. The ones removed have a mark on the top that says: C11G made in India. The replacement ones from Varian are made by Teledyne. I would suggest that you check your boards and if you have the ones made in India, order up a couple of spare relays. Note: Be careful when removing them. The traces are small and these look to be three lay boards since there is no soldering on the top of the board for the relay that is visible and one of the coil leads only solders to a small ring on the bottom of the board with no lans showing. This terminal is the ground terminal for the relay coil so leave the lead long until you are certain that it has a good connection. All of the other relay terminals that have to make connections go to a lan. Peter E. Vitali, CBET Therapeutic Radiological Engineer Yale New Haven Hospital 20 York Street, HRT 22 New Haven, CT. 06504 Phone: (203) 688-2948 FAX: (203) 688-3663 E-mail: peter.vitali@yale.edu As usual, everything I say may be plausibly denied at my employer's convenience...  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUT00F5MYK2XC@hubbard.azu.nl>; Fri, 19 Mar 2004 16:48:04 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004031916480115892 ; Fri, 19 Mar 2004 16:48:01 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id QAA28135; Fri, 19 Mar 2004 16:49:55 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma027994; Fri, 19 Mar 2004 16:49:26 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id IAA17614 for linac-eng-list; Fri, 19 Mar 2004 08:01:10 -0600 (CST) Received: from mopsy2.ccit.musc.edu (mopsy2.ccit.musc.edu [128.23.34.56]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id IAA17610 for ; Fri, 19 Mar 2004 08:01:09 -0600 (CST) Received: from revere3.musc.edu (revere3.musc.edu [128.23.203.9]) by mopsy2.ccit.musc.edu (8.12.10/8.12.10) with ESMTP id i2JE0Y5E022743 for ; Fri, 19 Mar 2004 09:00:34 -0500 Received: from XCHANGE2k.radonc2k.musc.edu (xchange2k.RadOnc.musc.edu [128.23.55.250]) by revere3.musc.edu (8.12.9/8.12.9) with ESMTP id i2JE0Ycl027408 for ; Fri, 19 Mar 2004 09:00:34 -0500 (EST) Date: Fri, 19 Mar 2004 09:00:34 -0500 From: "Nelson, Steve" Subject: RE: Update:EXQ2 Interlock Sender: owner-linac-eng@plato.aristotle.net To: Peter Vitali , "Linac-Engineers, Listserver Mess" Message-id: MIME-version: 1.0 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 8bit Precedence: bulk Content-Class: urn:content-classes:message X-MimeOLE: Produced By Microsoft Exchange V6.0.6487.1 Thread-Topic: Update:EXQ2 Interlock Thread-Index: AcQNuY2Ui4mCjbytRPiayIsrOcd0WwAAG/tQ X-MUSC-MailScanner-Information: Please contact postmstr@musc.edu for more information X-MUSC-MailScanner: Found to be clean X-MUSC-MailScanner-SpamCheck: not spam (whitelisted), SpamAssassin (score=0, required 4) X-MailScanner-From: nelson@radonc.musc.edu X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id IAA17611 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 19 Mar 2004 09:00:34 -0500 From: "Nelson, Steve" Subject: RE: Update:EXQ2 Interlock Sender: owner-linac-eng@plato.aristotle.net To: Peter Vitali , "Linac-Engineers, Listserver Mess" Content-Class: urn:content-classes:message X-MimeOLE: Produced By Microsoft Exchange V6.0.6487.1 Thread-Topic: Update:EXQ2 Interlock Thread-Index: AcQNuY2Ui4mCjbytRPiayIsrOcd0WwAAG/tQ X-MUSC-MailScanner-Information: Please contact postmstr@musc.edu for more information X-MUSC-MailScanner: Found to be clean X-MUSC-MailScanner-SpamCheck: not spam (whitelisted), SpamAssassin (score=0, required 4) X-MailScanner-From: nelson@radonc.musc.edu X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id IAA17611 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hello Peter and group, FYI I had to replace one of these about that same time period after installation on 21EX/S #5. Regards, Stephen -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net] On Behalf Of Peter Vitali Sent: Friday, March 19, 2004 8:38 AM To: Linac-Engineers, Listserver Mess Subject: Update:EXQ2 Interlock Good morning all: Update: On our 21EX-S, #16 installed in May of 2002 we had to replace the relay on the Transverse Beam Position Servo Board (20) in the Varian Card rack. About 6 weeks ago we replaced the relay on the Radial Beam Position Servo Board (19). There must be a bad batch of these relay out there. Problem shows up in about 18 months. These are solid state relays. The ones removed have a mark on the top that says: C11G made in India. The replacement ones from Varian are made by Teledyne. I would suggest that you check your boards and if you have the ones made in India, order up a couple of spare relays. Note: Be careful when removing them. The traces are small and these look to be three lay boards since there is no soldering on the top of the board for the relay that is visible and one of the coil leads only solders to a small ring on the bottom of the board with no lans showing. This terminal is the ground terminal for the relay coil so leave the lead long until you are certain that it has a good connection. All of the other relay terminals that have to make connections go to a lan. Peter E. Vitali, CBET Therapeutic Radiological Engineer Yale New Haven Hospital 20 York Street, HRT 22 New Haven, CT. 06504 Phone: (203) 688-2948 FAX: (203) 688-3663 E-mail: peter.vitali@yale.edu As usual, everything I say may be plausibly denied at my employer's convenience...  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUV00EQXH8HYC@hubbard.azu.nl>; Sat, 20 Mar 2004 12:29:07 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004032012290324698 ; Sat, 20 Mar 2004 12:29:03 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id MAA15931; Sat, 20 Mar 2004 12:30:59 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma015732; Sat, 20 Mar 2004 12:30:04 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id DAA09424 for linac-eng-list; Sat, 20 Mar 2004 03:33:13 -0600 (CST) Received: from mail.idm.net.lb (mail.idm.net.lb [193.188.135.12]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id DAA09410 for ; Sat, 20 Mar 2004 03:33:06 -0600 (CST) Received: from idm.net.lb (localhost [127.0.0.1]) by mail.idm.net.lb (iPlanet Messaging Server 5.2 HotFix 0.2 (built Apr 26 2002)) with ESMTP id <0HUV0073EBJQMA@mail.idm.net.lb> for linac-eng@plato.aristotle.net; Sat, 20 Mar 2004 06:26:14 -0300 (GMT) Received: from [194.126.5.133] by mail.idm.net.lb (mshttpd); Sat, 20 Mar 2004 11:26:14 +0200 Date: Sat, 20 Mar 2004 11:26:14 +0200 From: wsg_lb@idm.net.lb Subject: Need Information Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <18877618e4e9.18e4e9188776@idm.net.lb> MIME-version: 1.0 X-Mailer: iPlanet Messenger Express 5.2 HotFix 0.2 (built Apr 26 2002) Content-type: text/plain; charset=us-ascii Content-language: en Content-disposition: inline Content-transfer-encoding: 7BIT Precedence: bulk X-Accept-Language: en X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Sat, 20 Mar 2004 11:26:14 +0200 From: wsg_lb@idm.net.lb Subject: Need Information Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Content-language: en Content-disposition: inline X-Accept-Language: en X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Dear all I am new in the linac field and I have a question: What will happen inside the accelerator when electrons are in a negative field in the cavity. Is there any sites on the internet where I can have information in this regard? Thank you all. Eng. Wissam Ghazzawi  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HUZ00AVWXETWN@hubbard.azu.nl>; Mon, 22 Mar 2004 22:09:06 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004032222090030223 ; Mon, 22 Mar 2004 22:09:00 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id WAA04436; Mon, 22 Mar 2004 22:10:58 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma004352; Mon, 22 Mar 2004 22:10:41 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id NAA20422 for linac-eng-list; Mon, 22 Mar 2004 13:11:01 -0600 (CST) Received: from pop.sca.hin.sk.ca (shin.communitynet.ca [216.174.136.2]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id NAA20418 for ; Mon, 22 Mar 2004 13:10:59 -0600 (CST) Received: from smtp.scf.sk.ca (unverified [172.24.48.3]) by scf.sk.ca (Rockliffe SMTPRA 6.0.9) with SMTP id for ; Mon, 22 Mar 2004 13:10:58 -0600 Received: (from spc075 [172.24.56.75]) by smtp.scf.sk.ca (SAVSMTP 3.1.1.32) with SMTP id M2004032213105724154 for ; Mon, 22 Mar 2004 13:10:57 -0600 Date: Mon, 22 Mar 2004 13:10:57 -0600 From: Bob Penley Subject: Elekta SLS desk monitor Sender: owner-linac-eng@plato.aristotle.net To: "Linac list (Linac list)" Message-id: <000001c41041$68341960$4b3818ac@sca.hin.sk.ca> MIME-version: 1.0 X-Mailer: Microsoft Outlook, Build 10.0.4510 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_TsfSbHzU8hCSZauFbOD4Sg)" Importance: Normal Precedence: bulk X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 (Normal) *** EOOH *** Date: Mon, 22 Mar 2004 13:10:57 -0600 From: Bob Penley Subject: Elekta SLS desk monitor Sender: owner-linac-eng@plato.aristotle.net To: "Linac list (Linac list)" Importance: Normal X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 (Normal) This is a multi-part message in MIME format. --Boundary_(ID_TsfSbHzU8hCSZauFbOD4Sg) Content-type: text/plain; charset=us-ascii Content-transfer-encoding: quoted-printable Hello List Has anybody found a replacement for the Elekta SLS 12" color desk = monitor (4 cable RGB & sync type) as Elekta want a whopping $10425.00 for one. Or dose anybody know if there is a board in the newer units to use VGA = type monitors. =20 Thanks =20 Robert Penley Senior Physics Tech Saskatoon Cancer centre =20 --Boundary_(ID_TsfSbHzU8hCSZauFbOD4Sg) Content-type: text/html; charset=us-ascii Content-transfer-encoding: quoted-printable Message
Hello=20 List
Has = anybody found a=20 replacement for the Elekta SLS 12" color desk monitor (4 cable RGB & = sync=20 type) as Elekta want a whopping  $10425.00 for = one.
Or=20 dose=20 anybody know if there is a board in the newer units to use VGA type = monitors.
 
Thanks
 
Robert Penley
Senior Physics = Tech
Saskatoon Cancer = centre
 
--Boundary_(ID_TsfSbHzU8hCSZauFbOD4Sg)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HV1002I1RDQHO@hubbard.azu.nl>; Tue, 23 Mar 2004 21:53:52 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004032321534922616 ; Tue, 23 Mar 2004 21:53:49 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id VAA09562; Tue, 23 Mar 2004 21:55:47 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma009453; Tue, 23 Mar 2004 21:55:25 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id MAA22175 for linac-eng-list; Tue, 23 Mar 2004 12:27:11 -0600 (CST) Received: from mail20.nhs.uk (mail20.nhs.uk [62.6.139.212]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id MAA22171 for ; Tue, 23 Mar 2004 12:27:09 -0600 (CST) Received: from [10.191.254.3] (helo=relayint1.nhs.uk) by mail20.nhs.uk with esmtp (MTC MTA) id 1B5pD7-0000D7-42 for linac-eng@plato.aristotle.net; Tue, 23 Mar 2004 16:57:05 +0000 Received: from relay.nhs.uk (194.62.42.141) by relayint1.nhs.uk (Syntegra-I1 7.0.008) id 4039DF3700717A98 for linac-eng@plato.aristotle.net; Tue, 23 Mar 2004 16:57:04 +0000 Received: from beijing.relay.grampian.scot.nhs.uk (10.251.30.7) by relay.nhs.uk (Syntegra-1 7.0.008) (authenticated as relay_grampian_scot_nhs_uk@es2002.nhs.uk) id 40604F330000ABC0 for linac-eng@plato.aristotle.net; Tue, 23 Mar 2004 16:57:05 +0000 Received: from arh-mail2.arh.grampian.scot.nhs.uk ([9.16.60.28]) by beijing.relay.grampian.scot.nhs.uk with Microsoft SMTPSVC(5.0.2195.6713) ; Tue, 23 Mar 2004 16:52:56 +0000 Received: by arh-mail2.arh.grampian.scot.nhs.uk with Internet Mail Service (5.5.2657.72) id ; Tue, 23 Mar 2004 16:51:43 +0000 Date: Tue, 23 Mar 2004 16:56:23 +0000 From: David.Smith@arh.grampian.scot.nhs.uk Subject: Intermittent B MAG Interlocks [Scanned By SOPHOS Anti-Virus] Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 7bit Importance: normal Precedence: bulk thread-index: AcQQ90o/P0MgVAB/Qz6AI33JxWoOGQ== Content-Class: urn:content-classes:message X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4927.1200 X-OriginalArrivalTime: 23 Mar 2004 16:52:56.0140 (UTC) FILETIME=[4A3880C0:01C410F7] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 23 Mar 2004 16:56:23 +0000 From: David.Smith@arh.grampian.scot.nhs.uk Subject: Intermittent B MAG Interlocks [Scanned By SOPHOS Anti-Virus] Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Importance: normal thread-index: AcQQ90o/P0MgVAB/Qz6AI33JxWoOGQ== Content-Class: urn:content-classes:message X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4927.1200 X-OriginalArrivalTime: 23 Mar 2004 16:52:56.0140 (UTC) FILETIME=[4A3880C0:01C410F7] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f All, Since our Clinac 2100 CD, SN 1748 was new just over 2 years ago we have been bothered with intermittent BMAG faults (1 every 2 days) when the energy was changed. Never a problem during beam on, can happen at any gantry angle and on any energy. Yesterday for the first time this problem occurred during beam on and would not clear. So we checked and adjusted the null points for BMAG voltage and current as per the manual. What we did notice however was that when trying to null the voltage ( Bmag/ carousel PCB, TPs 7 and 15) it was drifting by about 10 -20 mv. We confirmed that it should not do this by comparing with the other twin machine which was rock steady. We also noticed that when setting the voltage null for 9 MeV (mid energy) the other energies were quite a bit from their null points and in some cases on the verge of tripping the BMAG interlock. Also noticed that the analogue machine parameter readout on the Varian screen was lower and more unstable than the norm. We got it to work after a fashion by off setting the voltage null away from the zero point in an attempt to reach a compromise where it would not trip on any energy. We rotated the gantry to see if this was being caused by chaffed cables but the voltage null point was still unstable. Today was still a problem then for no apparent reason we got a huge offset, 350 mV from the null on voltage test point at 6 MV energy, this time it was stable and the Varian analog voltages came back to normal. We then went through the nulling procedure again and everything is now ok. We have wiggled various control and supply BMAG cables, rotated the gantry, checked the 2 fuses F1 and 2 for good connections, checked connections on BMAG power supply but cannot make it happen again. One BMAG cable is worn through to its conductor at the gantry wind up but it is rubbing against plastic so this should not make any difference. Tomorrow we intend removing the lead on the head and inspecting there to see what we can find. We intend keeping the machine out for another day to see if we can find anything to make the fault return so we can fix it properly, any ideas would be appreciated. Dave Smith  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HV1007QIW5IPE@hubbard.azu.nl>; Tue, 23 Mar 2004 23:36:55 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004032323365324031 ; Tue, 23 Mar 2004 23:36:53 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id XAA27120; Tue, 23 Mar 2004 23:38:50 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma026997; Tue, 23 Mar 2004 23:38:28 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id OAA24415 for linac-eng-list; Tue, 23 Mar 2004 14:35:02 -0600 (CST) Received: from msgia.hs.uab.edu (gw5.uabmc.edu [164.111.37.252]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id OAA24411 for ; Tue, 23 Mar 2004 14:35:00 -0600 (CST) Received: from INET-MTA by msgia.hs.uab.edu with Novell_GroupWise; Tue, 23 Mar 2004 14:34:30 -0600 Date: Tue, 23 Mar 2004 14:34:19 -0600 From: Stephen Jordan Subject: Re: Intermittent B MAG Interlocks [Scanned By SOPHOS Anti-Virus] Sender: owner-linac-eng@plato.aristotle.net To: David.Smith@arh.grampian.scot.nhs.uk, linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.5.1 Content-type: text/plain; charset=US-ASCII Content-disposition: inline Content-transfer-encoding: 7bit Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 23 Mar 2004 14:34:19 -0600 From: Stephen Jordan Subject: Re: Intermittent B MAG Interlocks [Scanned By SOPHOS Anti-Virus] Sender: owner-linac-eng@plato.aristotle.net To: David.Smith@arh.grampian.scot.nhs.uk, linac-eng@plato.aristotle.net Content-disposition: inline X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f I had this exact problem on two of my 2100CDs; replace the cables. Hope this helps! Steve Jordan UAB Rad Physics >>> 3/23/2004 10:56:23 AM >>> All, Since our Clinac 2100 CD, SN 1748 was new just over 2 years ago we have been bothered with intermittent BMAG faults (1 every 2 days) when the energy was changed. Never a problem during beam on, can happen at any gantry angle and on any energy. Yesterday for the first time this problem occurred during beam on and would not clear. So we checked and adjusted the null points for BMAG voltage and current as per the manual. What we did notice however was that when trying to null the voltage ( Bmag/ carousel PCB, TPs 7 and 15) it was drifting by about 10 -20 mv. We confirmed that it should not do this by comparing with the other twin machine which was rock steady. We also noticed that when setting the voltage null for 9 MeV (mid energy) the other energies were quite a bit from their null points and in some cases on the verge of tripping the BMAG interlock. Also noticed that the analogue machine parameter readout on the Varian screen was lower and more unstable than the norm. We got it to work after a fashion by off setting the voltage null away from the zero point in an attempt to reach a compromise where it would not trip on any energy. We rotated the gantry to see if this was being caused by chaffed cables but the voltage null point was still unstable. Today was still a problem then for no apparent reason we got a huge offset, 350 mV from the null on voltage test point at 6 MV energy, this time it was stable and the Varian analog voltages came back to normal. We then went through the nulling procedure again and everything is now ok. We have wiggled various control and supply BMAG cables, rotated the gantry, checked the 2 fuses F1 and 2 for good connections, checked connections on BMAG power supply but cannot make it happen again. One BMAG cable is worn through to its conductor at the gantry wind up but it is rubbing against plastic so this should not make any difference. Tomorrow we intend removing the lead on the head and inspecting there to see what we can find. We intend keeping the machine out for another day to see if we can find anything to make the fault return so we can fix it properly, any ideas would be appreciated. Dave Smith  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HV3004D2D4IWW@hubbard.azu.nl>; Wed, 24 Mar 2004 18:41:07 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004032418410513551 ; Wed, 24 Mar 2004 18:41:05 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA15728; Wed, 24 Mar 2004 18:43:03 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma015531; Wed, 24 Mar 2004 18:42:12 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id JAA08198 for linac-eng-list; Wed, 24 Mar 2004 09:23:31 -0600 (CST) Received: from mail22.nhs.uk (mail22.nhs.uk [62.6.139.218]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id JAA08194 for ; Wed, 24 Mar 2004 09:23:28 -0600 (CST) Received: from [10.191.254.3] (helo=relayint1.nhs.uk) by mail22.nhs.uk with esmtp (MTC MTA) id 1B6ADa-0007S3-5U for linac-eng@plato.aristotle.net; Wed, 24 Mar 2004 15:22:58 +0000 Received: from relay.nhs.uk (194.62.42.143) by relayint1.nhs.uk (Syntegra-I1 7.0.008) id 4039DF370075A9EE for linac-eng@plato.aristotle.net; Wed, 24 Mar 2004 15:22:57 +0000 Received: from beijing.relay.grampian.scot.nhs.uk (10.251.30.7) by relay.nhs.uk (Syntegra-3 7.0.008) (authenticated as relay_grampian_scot_nhs_uk@es2002.nhs.uk) id 406196220000C16F for linac-eng@plato.aristotle.net; Wed, 24 Mar 2004 15:22:57 +0000 Received: from arh-mail2.arh.grampian.scot.nhs.uk ([9.16.60.28]) by beijing.relay.grampian.scot.nhs.uk with Microsoft SMTPSVC(5.0.2195.6713) ; Wed, 24 Mar 2004 15:20:00 +0000 Received: by arh-mail2.arh.grampian.scot.nhs.uk with Internet Mail Service (5.5.2657.72) id ; Wed, 24 Mar 2004 15:18:47 +0000 Date: Wed, 24 Mar 2004 15:23:28 +0000 From: David.Smith@arh.grampian.scot.nhs.uk Subject: BMAG probs cured (we hope) [Scanned By SOPHOS Anti-Virus] Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 7bit Importance: normal Precedence: bulk thread-index: AcQRs3likCrqQteGTSm+mcc5MAOMlA== Content-Class: urn:content-classes:message X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4927.1200 X-OriginalArrivalTime: 24 Mar 2004 15:20:00.0593 (UTC) FILETIME=[79594C10:01C411B3] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 24 Mar 2004 15:23:28 +0000 From: David.Smith@arh.grampian.scot.nhs.uk Subject: BMAG probs cured (we hope) [Scanned By SOPHOS Anti-Virus] Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Importance: normal thread-index: AcQRs3likCrqQteGTSm+mcc5MAOMlA== Content-Class: urn:content-classes:message X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4927.1200 X-OriginalArrivalTime: 24 Mar 2004 15:20:00.0593 (UTC) FILETIME=[79594C10:01C411B3] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Thanks to all who replied. BMAG problems turned out to be chaffed cable termination connectors at the head end. Removing one small piece of lead, just where the cables and water pipes go through to the coils revealed cable connections had worn right through the black rubber insulation. This exposed metal was intermittently shorting on the lead shielding, so much so that even the lead was worn! This was happening where the insulation paper offered no protection. Even where the paper is between cables and lead we could see chaffed areas which would be likely to give problems later. We will replace the insulation paper with new and plan to reinforce it where the problem areas exist. This would explain our acute BMAG problem but the chronic one has just reared it's ugly head again, i.e. faults between changing energies as explained in previous posting. Dave Smith  1,, X-Coding-System: iso-latin-1-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HV4001MY8SVML@hubbard.azu.nl>; Thu, 25 Mar 2004 06:05:29 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004032506051924187 ; Thu, 25 Mar 2004 06:05:19 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id GAA21175; Thu, 25 Mar 2004 06:07:17 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma021127; Thu, 25 Mar 2004 06:06:43 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id VAA21753 for linac-eng-list; Wed, 24 Mar 2004 21:18:30 -0600 (CST) Received: from hk.sina.com.hk ([202.85.139.106]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id VAA21749 for ; Wed, 24 Mar 2004 21:18:26 -0600 (CST) Received: (qmail 1501 invoked by uid 99); Thu, 25 Mar 2004 10:54:02 +0000 Date: Thu, 25 Mar 2004 10:54:02 +0800 From: =?big5?B?ZmFpY2hpY2hhbg==?= Subject: =?big5?B?QmFja3VwIG1vZGUgb2YgRWxla3RhIFNMMjU=?= Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <20040325105402.1498.qmail@hk.sina.com.hk> MIME-version: 1.0 Content-type: text/plain; charset=big5 Content-disposition: inline Content-transfer-encoding: 8BIT Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 25 Mar 2004 10:54:02 +0800 From: =?big5?B?ZmFpY2hpY2hhbg==?= Subject: =?big5?B?QmFja3VwIG1vZGUgb2YgRWxla3RhIFNMMjU=?= Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Content-disposition: inline X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f I have an old Elekta SL25 that makes backp of patient records by using tape drive with Data cartridge DC6150, 150MB. The mode of backup is append meaning writing patient records subsequently at the end of tape, ie. becoming very slow after some backups. Is it possible to change the mode to overwritten? Thanks. Fai ========================================================================================== ¤é¤é§K¶OÀH®É¾Ç­^»y/´¶³q¸Ü - http://adimages.sina.com.hk/Lingua_0304.html ¼s§i¤k¯«¥ô§AÚ» ÂŪÞMP3¾÷µ¥§A©ð - http://adawards.sina.com.hk/1/vote.html ³ü¶g¥Z¡G »R°«Åܼް« ³¯«a§Æ¡G¡u¥´§Ú吖¡I¡v - http://adimages.sina.com.hk/mag2_0304.html  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HV4001YZA8LT0@hubbard.azu.nl>; Thu, 25 Mar 2004 06:36:23 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004032506362024383 ; Thu, 25 Mar 2004 06:36:20 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id GAA24551; Thu, 25 Mar 2004 06:38:18 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma024515; Thu, 25 Mar 2004 06:38:03 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id WAA22308 for linac-eng-list; Wed, 24 Mar 2004 22:02:48 -0600 (CST) Received: from clift.nettas.net (clift.nettas.net [202.7.15.71]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id WAA22304 for ; Wed, 24 Mar 2004 22:02:45 -0600 (CST) Received: from dchs6202.dchs.tas.gov.au (exch.dchs.tas.gov.au [147.109.65.6]) by clift.nettas.net (8.12.7-20030918/8.12.7) with ESMTP id i2P46h5g011440 for ; Thu, 25 Mar 2004 15:06:43 +1100 (EST) Received: by exch.dchs.tas.gov.au with Internet Mail Service (5.5.2655.55) id ; Thu, 25 Mar 2004 15:02:41 +1100 Date: Thu, 25 Mar 2004 15:02:32 +1100 From: Johnson Glenn Subject: GFIL Sender: owner-linac-eng@plato.aristotle.net To: "LINAC_ENGINEERS (E-mail)" Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2655.55) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-NetTas-MTS: 'i2P46h5g011440' scanned using rules for Default MTS (plato.aristotle.net), previous hop was [147.109.65.6] X-Scanned-By: MIMEDefang 2.40 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 25 Mar 2004 15:02:32 +1100 From: Johnson Glenn Subject: GFIL Sender: owner-linac-eng@plato.aristotle.net To: "LINAC_ENGINEERS (E-mail)" X-NetTas-MTS: 'i2P46h5g011440' scanned using rules for Default MTS (plato.aristotle.net), previous hop was [147.109.65.6] X-Scanned-By: MIMEDefang 2.40 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hi All, Today, I had a latched GFIL I/L where I had to physically TURN OFF / ON the Cold Deck to clear the interlock, as it couldnt be cleared from the console. Prior to this I investigated the Error log (Option Select F). There were three errors 1. "No Mode" 2. "HVPS off" 3. "mer Inpu" I'm sure the first two are normal because I'm not in "RUN MODE". The third, (I had to look twice at it) I have no reference for. Have any of you guys seen this one before............... Regards, Glenn Johnson Radiation Engineer W P Holman Clinic Ph: 03 6223 4000 Mob: 0408 136 906 Fax: 03 6234 8036  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HV4007VDPM8E0@hubbard.azu.nl>; Thu, 25 Mar 2004 12:08:48 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004032512084031084 ; Thu, 25 Mar 2004 12:08:40 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id MAA13714; Thu, 25 Mar 2004 12:10:38 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma013421; Thu, 25 Mar 2004 12:09:45 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id DAA25249 for linac-eng-list; Thu, 25 Mar 2004 03:16:54 -0600 (CST) Received: from smtp1.BelWue.DE (smtp1.BelWue.de [129.143.2.12]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id DAA25245 for ; Thu, 25 Mar 2004 03:16:51 -0600 (CST) Received: from proxy.vinzenz.de (rechner1.marienhospital.s.belwue.de [129.143.100.162]) by smtp1.BelWue.DE with ESMTP id i2P9Gn4X007288 for ; Thu, 25 Mar 2004 10:16:49 +0100 (MET thomasreinbeck@vinzenz.de) Received: from localhost (localhost [127.0.0.1]) by proxy.vinzenz.de (Postfix) with ESMTP id 0059615982 for ; Thu, 25 Mar 2004 11:23:22 +0100 (CET) Received: from limes.vinzenz.de (unknown [10.10.99.2]) by proxy.vinzenz.de (Postfix) with SMTP id 4864615653 for ; Thu, 25 Mar 2004 11:23:16 +0100 (CET) Received: from D_Marienhospital-Message_Server by limes.vinzenz.de with Novell_GroupWise; Thu, 25 Mar 2004 10:16:43 +0100 Date: Thu, 25 Mar 2004 10:16:25 +0100 From: Thomas Reinbeck Subject: Antw: Backup mode of Elekta SL25 Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net, faichichan@sinaman.com Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise 5.5.2 Content-type: text/plain; charset=US-ASCII Content-disposition: inline Content-transfer-encoding: 8bit Precedence: bulk Virus-Scanned: by Marienhospital-Stuttgart X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id DAA25246 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 25 Mar 2004 10:16:25 +0100 From: Thomas Reinbeck Subject: Antw: Backup mode of Elekta SL25 Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net, faichichan@sinaman.com Content-disposition: inline Virus-Scanned: by Marienhospital-Stuttgart X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id DAA25246 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hi Fai, yes, it is possible. Before you start your backup you should formate(in the same menu) your tape. Hope this helps. From the cloudy south of germany Thomas >>> "faichichan" 25.03.2004 03.54 Uhr >>> I have an old Elekta SL25 that makes backp of patient records by using tape drive with Data cartridge DC6150, 150MB. The mode of backup is append meaning writing patient records subsequently at the end of tape, ie. becoming very slow after some backups. Is it possible to change the mode to overwritten? Thanks. Fai ========================================================================================== / - http://adimages.sina.com.hk/Lingua_0304.html MP3 - http://adawards.sina.com.hk/1/vote.html 吖 - http://adimages.sina.com.hk/mag2_0304.html  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HV40088IPZFXM@hubbard.azu.nl>; Thu, 25 Mar 2004 12:16:46 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004032512163931335 ; Thu, 25 Mar 2004 12:16:39 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id MAA16095; Thu, 25 Mar 2004 12:18:38 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma015664; Thu, 25 Mar 2004 12:17:17 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id DAA25335 for linac-eng-list; Thu, 25 Mar 2004 03:38:26 -0600 (CST) Received: from mail21.nhs.uk (mail21.nhs.uk [62.6.139.215]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id DAA25331 for ; Thu, 25 Mar 2004 03:38:24 -0600 (CST) Received: from [10.191.254.3] (helo=relayint1.nhs.uk) by mail21.nhs.uk with esmtp (MTC MTA) id 1B6RJB-0002RY-S0 for linac-eng@plato.aristotle.net; Thu, 25 Mar 2004 09:37:53 +0000 Received: from relay.nhs.uk (194.62.42.142) by relayint1.nhs.uk (Syntegra-I1 7.0.008) id 4039DF370077D59B for linac-eng@plato.aristotle.net; Thu, 25 Mar 2004 09:37:53 +0000 Received: from lisa.rbbh_msdomain1 (195.104.159.2) by relay.nhs.uk (Syntegra-2 7.0.008) (authenticated as smtp_rbbh-tr_nhs_uk@es2002.nhs.uk) id 40629D690000719F for linac-eng@plato.aristotle.net; Thu, 25 Mar 2004 09:37:53 +0000 Received: by Lisa with Internet Mail Service (5.5.2657.72) id ; Thu, 25 Mar 2004 09:37:53 +0000 Date: Thu, 25 Mar 2004 09:37:47 +0000 From: Whittard Paul Subject: RE: Backup mode of Elekta SL25 Sender: owner-linac-eng@plato.aristotle.net To: 'linac-eng' Message-id: <5237066EDDFDC14697C9231BAF3EDFA302D895AD@Marge> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=big5 Content-transfer-encoding: quoted-printable Precedence: bulk X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id DAA25332 X-MIME-Autoconverted: from 8bit to quoted-printable by plato.aristotle.net id DAA25335 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 25 Mar 2004 09:37:47 +0000 From: Whittard Paul Subject: RE: Backup mode of Elekta SL25 Sender: owner-linac-eng@plato.aristotle.net To: 'linac-eng' X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id DAA25332 X-MIME-Autoconverted: from 8bit to quoted-printable by plato.aristotle.net id DAA25335 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f The way we overcome this problem is to re-initialise the tapes every 3 months or so. The backups then start from the beginning of the tape again= , rather than spending an age winding the tape to the next blank section. Y= ou do loose all the data when you to this, so we had two sets of tapes which= we swapped over every three months, just so we didn't loose every thing in o= ne week. We used a different tape each day, so this equates to reinitialisation af= ter roughly 12 backups. (I think the initialisation itself takes 20 mins. or so. Its been a few years since we did this as the data is now on an external R&V system). Paul Whittard Royal Berkshire Hospital Reading RG1 5AN Tel: +44 (0) 118 9877 363 Fax: +44 (0) 118 9877 377=09 > -----Original Message----- > From: faichichan [SMTP:faichichan@sinaman.com] > Sent: Thursday, March 25, 2004 2:54 AM > To: linac-eng@plato.aristotle.net > Subject: Backup mode of Elekta SL25 >=20 >=20 > I have an old Elekta SL25 that makes backp of patient records by using > tape drive with Data cartridge DC6150, 150MB. The mode of backup is app= end > meaning writing patient records subsequently at the end of tape, ie. > becoming very slow after some backups. Is it possible to change the mod= e > to overwritten? Thanks. >=20 > Fai >=20 >=20 >=20 >=20 > =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D > =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D > =A4=E9=A4=E9=A7K=B6O=C0H=AE=C9=BE=C7=AD^=BBy/=B4=B6=B3q=B8=DC - > http://adimages.sina.com.hk/Lingua_0304.html > =BCs=A7i=A4k=AF=AB=A5=F4=A7A=DA=BB =C2=C5=AA=DEMP3=BE=F7=B5=A5=A7A=A9=F0= - > http://adawards.sina.com.hk/1/vote.html > =B3=FC=B6g=A5Z=A1G =BBR=B0=AB=C5=DC=BC=DE=B0=AB =B3=AF=ABa=A7=C6=A1G=A1= u=A5=B4=A7=DA吖=A1I=A1v - > http://adimages.sina.com.hk/mag2_0304.html  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HV600K71VZLGT@hubbard.azu.nl>; Fri, 26 Mar 2004 16:21:31 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004032616212931117 ; Fri, 26 Mar 2004 16:21:29 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id QAA19001; Fri, 26 Mar 2004 16:23:27 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma018687; Fri, 26 Mar 2004 16:22:32 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id GAA21605 for linac-eng-list; Fri, 26 Mar 2004 06:55:51 -0600 (CST) Received: from web25107.mail.ukl.yahoo.com (web25107.mail.ukl.yahoo.com [217.12.10.55]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id GAA21601 for ; Fri, 26 Mar 2004 06:55:48 -0600 (CST) Received: from [219.77.17.202] by web25107.mail.ukl.yahoo.com via HTTP; Fri, 26 Mar 2004 12:54:44 +0000 (GMT) Date: Fri, 26 Mar 2004 12:54:44 +0000 (GMT) From: =?iso-8859-1?q?kim=20yeung?= Subject: Re: Varian Digital Gun Deck Sender: owner-linac-eng@plato.aristotle.net To: Linac-Eng Message-id: <20040326125444.55395.qmail@web25107.mail.ukl.yahoo.com> MIME-version: 1.0 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_Z7NMmC+5IzS+KUSM7/PDwQ)" Content-transfer-encoding: 8BIT Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 26 Mar 2004 12:54:44 +0000 (GMT) From: =?iso-8859-1?q?kim=20yeung?= Subject: Re: Varian Digital Gun Deck Sender: owner-linac-eng@plato.aristotle.net To: Linac-Eng X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f --Boundary_(ID_Z7NMmC+5IzS+KUSM7/PDwQ) Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 8bit Hi Colleagues, Varian 2300CD, Version 6.1, Digital Gun Deck When we read the gun grid set point, we notice that the display flashes in some energies, and the gun I pot is inactive. Does it mean the gun I pot setting of some energies is "too far" from its linear region? Any advice /suggestion on the above issue? Thanks in advance. Kim Yeung --------------------------------- Yahoo! Messenger - Communicate instantly..."Ping" your friends today! Download Messenger Now --Boundary_(ID_Z7NMmC+5IzS+KUSM7/PDwQ) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: 8bit
Hi Colleagues,
 
                   Varian 2300CD, Version 6.1, Digital Gun Deck
 
When we read the gun grid set point, we notice that  the display flashes  in some energies, and the gun I pot is inactive.
 
Does it mean the gun I pot setting of some energies is "too far"  from its  linear region?
 
Any advice /suggestion on the above issue?
 
Thanks in advance.
 
Kim Yeung 
 
 

Yahoo! Messenger - Communicate instantly..."Ping" your friends today! Download Messenger Now --Boundary_(ID_Z7NMmC+5IzS+KUSM7/PDwQ)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HV700C6X8D2SC@hubbard.azu.nl>; Fri, 26 Mar 2004 20:48:40 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004032620483702762 ; Fri, 26 Mar 2004 20:48:37 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id UAA11706; Fri, 26 Mar 2004 20:50:36 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma011657; Fri, 26 Mar 2004 20:50:08 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id LAA25604 for linac-eng-list; Fri, 26 Mar 2004 11:33:46 -0600 (CST) Received: from TC00TECPRO00052.ssss.gouv.qc.ca (mail2.ssss.gouv.qc.ca [199.243.239.24]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id LAA25600 for ; Fri, 26 Mar 2004 11:33:44 -0600 (CST) Received: from tc00tecpro00009.ssss.gouv.qc.ca ([10.250.32.59]) by TC00TECPRO00052.ssss.gouv.qc.ca (Lotus Domino Release 6.5) with ESMTP id 2004032612341835-236337 ; Fri, 26 Mar 2004 12:34:18 -0500 Date: Fri, 26 Mar 2004 12:32:46 -0500 From: Eric.Guimont@chuq.qc.ca Subject: Siemens Primus Target Slide Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: quoted-printable Precedence: bulk X-MIMETrack: Serialize by Router on TC00TECPRO00009/Serveurs/SSSS(Release 5.0.8 |June 18, 2001) at 2004-03-26 12:35:34, Itemize by SMTP Server on TC00TECPRO00052/Serveurs/SSSSSMTP(Release 6.5|September 26, 2003) at 2004-03-26 12:34:18, Serialize by Router on TC00TECPRO00052/Serveurs/SSSSSMTP(Release 6.5|September 26, 2003) at 2004-03-26 12:34:20, Serialize complete at 2004-03-26 12:34:20 X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id LAA25601 X-MIME-Autoconverted: from 8bit to quoted-printable by plato.aristotle.net id LAA25604 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 26 Mar 2004 12:32:46 -0500 From: Eric.Guimont@chuq.qc.ca Subject: Siemens Primus Target Slide Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-MIMETrack: Serialize by Router on TC00TECPRO00009/Serveurs/SSSS(Release 5.0.8 |June 18, 2001) at 2004-03-26 12:35:34, Itemize by SMTP Server on TC00TECPRO00052/Serveurs/SSSSSMTP(Release 6.5|September 26, 2003) at 2004-03-26 12:34:18, Serialize by Router on TC00TECPRO00052/Serveurs/SSSSSMTP(Release 6.5|September 26, 2003) at 2004-03-26 12:34:20, Serialize complete at 2004-03-26 12:34:20 X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id LAA25601 X-MIME-Autoconverted: from 8bit to quoted-printable by plato.aristotle.net id LAA25604 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Anybody got problems with the new target slide HD1 board? 5483198D with s= cr on it. After somes months, its imposible to select electron mode. We heart targe= t drive motor click, click click but imposible to select electron mode. We replaced this board with a new one, everything is ok but we knows this board will be replace again in some month. On 3 linac, we replace this board around 1 time a year. Always the same problems SCR blowed. Any solution? -------------------------------------------------------------------------= ----------------------- Si vous n'=EAtes pas le destinataire de ce message, veuillez le d=E9truire apr=E8s avoir inform=E9 l'exp=E9diteur de son erre= ur. Par ailleurs, il est interdit de copier ou de modifier tout courrier sans l'autorisation de l'auteur. Le CHUQ n'assume aucune responsabilit=E9 =E0 l'=E9gard du contenu des messages personnels envoy=E9s par ses employ=E9s.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HV700854LSDOM@hubbard.azu.nl>; Sat, 27 Mar 2004 01:38:39 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004032701383305522 ; Sat, 27 Mar 2004 01:38:33 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id BAA20847; Sat, 27 Mar 2004 01:40:32 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma020833; Sat, 27 Mar 2004 01:40:13 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id QAA02261 for linac-eng-list; Fri, 26 Mar 2004 16:45:02 -0600 (CST) Received: from imo-d06.mx.aol.com (imo-d06.mx.aol.com [205.188.157.38]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id QAA02248 for ; Fri, 26 Mar 2004 16:44:58 -0600 (CST) Received: from SMcna39074@aol.com by imo-d06.mx.aol.com (mail_out_v37_r1.2.) id 8.a0.87ade3c (15888); Fri, 26 Mar 2004 17:44:17 -0500 (EST) Received: from aol.com (mow-m22.webmail.aol.com [64.12.180.138]) by air-id08.mx.aol.com (v98.19) with ESMTP id MAILINID83-3e104064b240271; Fri, 26 Mar 2004 17:44:16 -0500 Date: Fri, 26 Mar 2004 17:44:16 -0500 From: SMcna39074@aol.com Subject: Re: yld faults 600 cd Sender: owner-linac-eng@plato.aristotle.net To: faichichan@sinaman.com Cc: linac-eng@plato.aristotle.net Message-id: <70E0640E.781E97E0.0C0A0915@aol.com> MIME-version: 1.0 X-Mailer: Atlas Mailer 2.0 Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 8bit Precedence: bulk X-AOL-IP: 207.154.79.102 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 26 Mar 2004 17:44:16 -0500 From: SMcna39074@aol.com Subject: Re: yld faults 600 cd Sender: owner-linac-eng@plato.aristotle.net To: faichichan@sinaman.com Cc: linac-eng@plato.aristotle.net X-AOL-IP: 207.154.79.102 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Yield faults on IMRT. Getting them here also--Cancer Center of Santa Barbara. Word I hear is that Varian is aware of the problem and a redesign on the Yield PCB may be in the works. stan@ccsb.org  1,, X-Coding-System: iso-latin-1-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HV7008GYMHWOM@hubbard.azu.nl>; Sat, 27 Mar 2004 01:53:57 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004032701535605628 ; Sat, 27 Mar 2004 01:53:56 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id BAA22580; Sat, 27 Mar 2004 01:55:55 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma022556; Sat, 27 Mar 2004 01:55:47 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id QAA02384 for linac-eng-list; Fri, 26 Mar 2004 16:56:02 -0600 (CST) Received: from hk.sina.com.hk ([202.85.139.101]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id QAA02380 for ; Fri, 26 Mar 2004 16:56:00 -0600 (CST) Received: (qmail 9476 invoked by uid 99); Fri, 26 Mar 2004 12:26:56 +0000 Date: Fri, 26 Mar 2004 12:26:55 +0800 From: =?big5?B?ZmFpY2hpY2hhbg==?= Subject: =?big5?B?UkU6UmU6IEFudHc6IEJhY2t1cCBtb2RlIG9mIEVsZWt0YSBTTDI1?= Sender: owner-linac-eng@plato.aristotle.net To: rflores@mdanderson.org Cc: linac-eng@plato.aristotle.net Message-id: <20040326122656.9474.qmail@hk.sina.com.hk> MIME-version: 1.0 Content-type: text/plain; charset=big5 Content-disposition: inline Content-transfer-encoding: 8BIT Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 26 Mar 2004 12:26:55 +0800 From: =?big5?B?ZmFpY2hpY2hhbg==?= Subject: =?big5?B?UkU6UmU6IEFudHc6IEJhY2t1cCBtb2RlIG9mIEVsZWt0YSBTTDI1?= Sender: owner-linac-eng@plato.aristotle.net To: rflores@mdanderson.org Cc: linac-eng@plato.aristotle.net Content-disposition: inline X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Thanks all. Except the way of fomrating the tape, is there an alternative? Does Elekta SL25 provide options of backup in software application itself ( eg. append, overwrite, etc )? Fai ========================================================================================== ¤é¤é§K¶OÀH®É¾Ç­^»y/´¶³q¸Ü - http://adimages.sina.com.hk/Lingua_0304.html ¼s§i¤k¯«¥ô§AÚ» ÂŪÞMP3¾÷µ¥§A©ð - http://adawards.sina.com.hk/1/vote.html ³ü¶g¥Z¡G »R°«Åܼް« ³¯«a§Æ¡G¡u¥´§Ú吖¡I¡v - http://adimages.sina.com.hk/mag2_0304.html  1,, X-Coding-System: iso-latin-1-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HV7008OAMXGOM@hubbard.azu.nl>; Sat, 27 Mar 2004 02:03:22 +0100 (MET) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004032702032105694 ; Sat, 27 Mar 2004 02:03:21 +0100 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id CAA23737; Sat, 27 Mar 2004 02:05:20 +0100 (MET) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma023698; Sat, 27 Mar 2004 02:05:02 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id RAA03140 for linac-eng-list; Fri, 26 Mar 2004 17:26:12 -0600 (CST) Received: from hk.sina.com.hk ([202.85.139.107]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id RAA03136 for ; Fri, 26 Mar 2004 17:26:09 -0600 (CST) Received: (qmail 7836 invoked by uid 99); Sat, 27 Mar 2004 07:17:37 +0000 Date: Sat, 27 Mar 2004 07:17:37 +0800 From: =?big5?B?ZmFpY2hpY2hhbg==?= Subject: =?big5?B?UkU6UmU6IHlsZCBmYXVsdHMgNjAwIGNk?= Sender: owner-linac-eng@plato.aristotle.net To: SMcna39074@aol.com Message-id: <20040327071737.7835.qmail@hk.sina.com.hk> MIME-version: 1.0 Content-type: text/plain; charset=big5 Content-disposition: inline Content-transfer-encoding: 8BIT Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Sat, 27 Mar 2004 07:17:37 +0800 From: =?big5?B?ZmFpY2hpY2hhbg==?= Subject: =?big5?B?UkU6UmU6IHlsZCBmYXVsdHMgNjAwIGNk?= Sender: owner-linac-eng@plato.aristotle.net To: SMcna39074@aol.com Content-disposition: inline X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Varian already have had a kit for Yield servo PCB, ie two new vesion PROMs. >Yield faults on IMRT. Getting them here also--Cancer Center of Santa Barbara. Word I hear is that Varian is aware of the problem and a redesign on the Yield PCB may be in the works. stan@ccsb.org >. > ========================================================================================== ¤é¤é§K¶OÀH®É¾Ç­^»y/´¶³q¸Ü - http://adimages.sina.com.hk/Lingua_0304.html ¼s§i¤k¯«¥ô§AÚ» ÂŪÞMP3¾÷µ¥§A©ð - http://adawards.sina.com.hk/1/vote.html ³ü¶g¥Z¡G ©ú·¾¾G¤¤°ò¡AªL¹ÅªYëè«·¨¤då_ - http://adimages.sina.com.hk/Mag_0304.html  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HVC006YBL238Y@hubbard.azu.nl>; Mon, 29 Mar 2004 19:10:56 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004032919105117362 ; Mon, 29 Mar 2004 19:10:51 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA00824; Mon, 29 Mar 2004 19:12:51 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma000709; Mon, 29 Mar 2004 19:12:12 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id JAA29773 for linac-eng-list; Mon, 29 Mar 2004 09:01:19 -0600 (CST) Received: from ctrc7.saci.org ([192.238.22.7]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id JAA29766 for ; Mon, 29 Mar 2004 09:01:16 -0600 (CST) Received: by ctrc7.saci.org with Internet Mail Service (5.5.2653.19) id ; Mon, 29 Mar 2004 08:59:27 -0600 Date: Mon, 29 Mar 2004 08:59:23 -0600 From: "Peyton, Jeff" Subject: RE: yld faults 600 cd Sender: owner-linac-eng@plato.aristotle.net To: SMcna39074@aol.com, faichichan@sinaman.com Cc: linac-eng@plato.aristotle.net Message-id: <2FADFE8CAD9FBB448338F075A6C6C78D016C4C6E@ctrc7.saci.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 29 Mar 2004 08:59:23 -0600 From: "Peyton, Jeff" Subject: RE: yld faults 600 cd Sender: owner-linac-eng@plato.aristotle.net To: SMcna39074@aol.com, faichichan@sinaman.com Cc: linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f All: We have been doing IMRT on CL600Cs for six years plus. We have three IMRT 600s; CL600C (C1) sn# 198 with 250 dose rate, CL600C (C3) sn# 404 with 400 dose rate and a CL600CD sn# 662 with a 600 dose rate. We understand the problems associated with arc therapy on those machines. We have found that the yield fault is usually not the culprit and it is just doing it's job. Our performance records show that 99% of the yield problems are due to AFC alignment. I mean precise AFC alignment to prevent long skew times and to track out to several thousand monitor units. Try running arc therapy in service mode at 2000 monitor units and manually stop and start the beam every ten degrees. If you can do this one should never have problems with IMRT. Note bene: we do MLC and Peacock IMRT at this facility and radio surgeries on the 600CD version. Jeff Peyton CTRC San Antonio Texas -----Original Message----- From: SMcna39074@aol.com [mailto:SMcna39074@aol.com] Sent: Friday, March 26, 2004 4:44 PM To: faichichan@sinaman.com Cc: linac-eng@plato.aristotle.net Subject: Re: yld faults 600 cd Yield faults on IMRT. Getting them here also--Cancer Center of Santa Barbara. Word I hear is that Varian is aware of the problem and a redesign on the Yield PCB may be in the works. stan@ccsb.org  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HVC0085FLG7OP@hubbard.azu.nl>; Mon, 29 Mar 2004 19:19:22 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004032919192017482 ; Mon, 29 Mar 2004 19:19:20 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA02355; Mon, 29 Mar 2004 19:21:20 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma002279; Mon, 29 Mar 2004 19:20:44 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id JAA00134 for linac-eng-list; Mon, 29 Mar 2004 09:15:45 -0600 (CST) Received: from web25106.mail.ukl.yahoo.com (web25106.mail.ukl.yahoo.com [217.12.10.54]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id JAA00123 for ; Mon, 29 Mar 2004 09:15:42 -0600 (CST) Received: from [219.77.17.132] by web25106.mail.ukl.yahoo.com via HTTP; Mon, 29 Mar 2004 16:15:11 +0100 (BST) Date: Mon, 29 Mar 2004 16:15:11 +0100 (BST) From: =?iso-8859-1?q?kim=20yeung?= Subject: Re: Varian Digital Gun Deck Sender: owner-linac-eng@plato.aristotle.net To: Linac-Eng Message-id: <20040329151511.91930.qmail@web25106.mail.ukl.yahoo.com> MIME-version: 1.0 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_74gSdNMQXne31DNyt9WOgA)" Content-transfer-encoding: 8BIT Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 29 Mar 2004 16:15:11 +0100 (BST) From: =?iso-8859-1?q?kim=20yeung?= Subject: Re: Varian Digital Gun Deck Sender: owner-linac-eng@plato.aristotle.net To: Linac-Eng X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f --Boundary_(ID_74gSdNMQXne31DNyt9WOgA) Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 8bit Hi Colleagues, Varian 2300CD, Version 6.1, Digital Gun Deck When we read the gun grid set point, we notice that the display flashes in some energies, and the gun I pot is inactive. Does it mean the gun I pot setting of some energies is "too far" from its linear region? Does it affact the beam-on conditions? Any advice /suggestion on the above issue? Thanks in advance. Kim Yeung --------------------------------- WIN FREE WORLDWIDE FLIGHTS - nominate a cafe in the Yahoo! Mail Internet Cafe Awards --Boundary_(ID_74gSdNMQXne31DNyt9WOgA) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: 8bit
Hi Colleagues,
 
                   Varian 2300CD, Version 6.1, Digital Gun Deck
 
When we read the gun grid set point, we notice that  the display flashes  in some energies, and the gun I pot is inactive.
 
Does it mean the gun I pot setting of some energies is "too far"  from its  linear region?  Does it affact the beam-on conditions? 
 
Any advice /suggestion on the above issue?
 
Thanks in advance.
 
Kim Yeung 
 

WIN FREE WORLDWIDE FLIGHTS - nominate a cafe in the Yahoo! Mail Internet Cafe Awards --Boundary_(ID_74gSdNMQXne31DNyt9WOgA)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HVC00J1JU95AB@hubbard.azu.nl>; Mon, 29 Mar 2004 22:29:40 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004032922293520755 ; Mon, 29 Mar 2004 22:29:35 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id WAA06659; Mon, 29 Mar 2004 22:31:35 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma006617; Mon, 29 Mar 2004 22:31:25 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id MAA04661 for linac-eng-list; Mon, 29 Mar 2004 12:19:33 -0600 (CST) Received: from mailhub.hitchcock.org (MAILHUB.HITCHCOCK.ORG [130.189.240.101]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id MAA04657 for ; Mon, 29 Mar 2004 12:19:29 -0600 (CST) Received: from W2L26038 ([130.189.221.154]) by mailhub.hitchcock.org (8.12.10+DND/8.12.10) with SMTP id i2TIJSM4025389 for ; Mon, 29 Mar 2004 13:19:28 -0500 (EST) Date: Mon, 29 Mar 2004 13:17:29 -0500 From: "Scott T. Merrihew" Subject: Portal Vision Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Reply-to: Scott.T.Merrihew@Hitchcock.ORG Message-id: <9EFE1A84EC284A4682236E1D4553A46401781E@biomednt1.hitchcock.org> MIME-version: 1.0 X-Mailer: Microsoft Outlook CWS, Build 9.0.2416 (9.0.2910.0) Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 7bit Importance: Normal Precedence: bulk X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 (Normal) *** EOOH *** Date: Mon, 29 Mar 2004 13:17:29 -0500 From: "Scott T. Merrihew" Subject: Portal Vision Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Reply-to: Scott.T.Merrihew@Hitchcock.ORG Importance: Normal X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 (Normal) Looking for information on the aS500 portal vision. Image quality with the tested phantom @140cm looks great. But is a different story when patients are involved. We have taken a new drift image and calibrated. we have also adjusted frame average with no improvements to image quality . Any advice on what to try next?  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HVD00C062XM16@hubbard.azu.nl>; Tue, 30 Mar 2004 01:37:07 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004033001370523157 ; Tue, 30 Mar 2004 01:37:05 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id BAA08147; Tue, 30 Mar 2004 01:39:06 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma008073; Tue, 30 Mar 2004 01:38:42 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id PAA09470 for linac-eng-list; Mon, 29 Mar 2004 15:54:27 -0600 (CST) Received: from glsmtp1.gundluth.org (glsmtp1-2.gundluth.org [204.69.146.15] (may be forged)) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id PAA09466 for ; Mon, 29 Mar 2004 15:54:25 -0600 (CST) Date: Mon, 29 Mar 2004 15:54:22 -0600 From: ajengstl@gundluth.org Subject: RE: yld faults 600 cd Sender: owner-linac-eng@plato.aristotle.net To: "Peyton, Jeff" Cc: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Lotus Notes Release 5.0.9 November 16, 2001 Content-type: text/plain; charset=us-ascii Precedence: bulk X-MIMETrack: Serialize by Router on GLSMTP1/GUNDLUTH(Release 5.0.12 |February 13, 2003) at 03/29/2004 04:03:21 PM X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 29 Mar 2004 15:54:22 -0600 From: ajengstl@gundluth.org Subject: RE: yld faults 600 cd Sender: owner-linac-eng@plato.aristotle.net To: "Peyton, Jeff" Cc: linac-eng@plato.aristotle.net X-MIMETrack: Serialize by Router on GLSMTP1/GUNDLUTH(Release 5.0.12 |February 13, 2003) at 03/29/2004 04:03:21 PM X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f We have a 600C/D sn 491 with Portal vision which seems to only have Yield faults if something is wrong or missadjusted. I'm also wondering if someone could forward some AFC alignment instructions on a 600C/D. I seem to have a once/week readjust of the AFC diff and Yield servo. I have been working on what is changing and have not found the culprit yet. Maybe I am missing something on the AFC alignment, or my Magnetron is just not having stable output. Alan Engstler Gundersen Lutheran "Peyton, Jeff" To: SMcna39074@aol.com, faichichan@sinaman.com Sent by: cc: linac-eng@plato.aristotle.net owner-linac-eng@plato.ar Subject: RE: yld faults 600 cd istotle.net 03/29/04 08:59 AM All: We have been doing IMRT on CL600Cs for six years plus. We have three IMRT 600s; CL600C (C1) sn# 198 with 250 dose rate, CL600C (C3) sn# 404 with 400 dose rate and a CL600CD sn# 662 with a 600 dose rate. We understand the problems associated with arc therapy on those machines. We have found that the yield fault is usually not the culprit and it is just doing it's job. Our performance records show that 99% of the yield problems are due to AFC alignment. I mean precise AFC alignment to prevent long skew times and to track out to several thousand monitor units. Try running arc therapy in service mode at 2000 monitor units and manually stop and start the beam every ten degrees. If you can do this one should never have problems with IMRT. Note bene: we do MLC and Peacock IMRT at this facility and radio surgeries on the 600CD version. Jeff Peyton CTRC San Antonio Texas -----Original Message----- From: SMcna39074@aol.com [mailto:SMcna39074@aol.com] Sent: Friday, March 26, 2004 4:44 PM To: faichichan@sinaman.com Cc: linac-eng@plato.aristotle.net Subject: Re: yld faults 600 cd Yield faults on IMRT. Getting them here also--Cancer Center of Santa Barbara. Word I hear is that Varian is aware of the problem and a redesign on the Yield PCB may be in the works. stan@ccsb.org  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HVD00BPIUVT6A@hubbard.azu.nl>; Tue, 30 Mar 2004 11:40:49 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004033011404431689 ; Tue, 30 Mar 2004 11:40:44 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id LAA03126; Tue, 30 Mar 2004 11:42:45 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma002928; Tue, 30 Mar 2004 11:42:02 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id CAA21967 for linac-eng-list; Tue, 30 Mar 2004 02:08:40 -0600 (CST) Received: from mail22.nhs.uk (mail22.nhs.uk [62.6.139.218]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id CAA21963 for ; Tue, 30 Mar 2004 02:08:36 -0600 (CST) Received: from [10.191.254.3] (helo=relayint2.nhs.uk) by mail22.nhs.uk with esmtp (MTC MTA) id 1B8EI2-0001wt-8d for linac-eng@plato.aristotle.net; Tue, 30 Mar 2004 09:08:06 +0100 Received: from relay.nhs.uk (194.62.42.141) by relayint2.nhs.uk (Syntegra-I2 7.0.008) id 4039DF710097C0EA for linac-eng@plato.aristotle.net; Tue, 30 Mar 2004 09:08:06 +0100 Received: from mailsweeper.suht.swest.nhs.uk (194.189.32.135) by relay.nhs.uk (Syntegra-1 7.0.008) id 406822D80004801B for linac-eng@plato.aristotle.net; Tue, 30 Mar 2004 09:08:06 +0100 Received: from mail.suht.swest.nhs.uk (unverified) by mailsweeper.suht.swest.nhs.uk (Content Technologies SMTPRS 4.3.1) with ESMTP id for ; Tue, 30 Mar 2004 09:12:07 +0100 Received: from SGH-MTA by mail.suht.swest.nhs.uk with Novell_GroupWise; Tue, 30 Mar 2004 09:08:05 +0100 Date: Tue, 30 Mar 2004 09:07:31 +0100 From: John McKechnie Subject: Elekta v Varian v Seimens Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.0.2 Content-type: text/plain; charset=us-ascii Content-disposition: inline Content-transfer-encoding: 7bit Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 30 Mar 2004 09:07:31 +0100 From: John McKechnie Subject: Elekta v Varian v Seimens Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Content-disposition: inline X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hello world, My colleagues are currently in the process of looking at the above manufacturers' linacs, MLC, Portal Imaging "and all that jazz", decision to be made in a month or so. We have Elekta experience and limited Varian engineering experience in house, but we have no Seimens Oncor experience. Any advice please, from a service, maintainability, reliability point of view? Frank opinions to me personally, away from prying corporate big brother, would be appreciated! (Not that I'm implying that we don't get the real story from the manufacturers! They're all great guys and you could trust them with your grandmother.) Best regards, John John McKechnie Head of Radiotherapy Electronics Wessex Radiotherapy Centre Royal Southants Hospital Brintons Terrace (Off St. Mary's Road) Southampton SO14 OYG Tel. 023 8082 5708 ************************************************************************************ This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. Any views or opinions presented are solely those of The author and do not necessarily represent those of the Trust unless explicitly stated otherwise. If you have received this e-mail in error please delete the e-mail and contact the Southampton University Hospitals NHS Trust Helpdesk on:- 023 80796000 This footnote also confirms that this email message has been swept by MIMEsweeper for the presence of computer viruses. ************************************************************************************  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HVD00HSVY9PVB@hubbard.azu.nl>; Tue, 30 Mar 2004 12:54:05 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004033012540400836 ; Tue, 30 Mar 2004 12:54:04 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id MAA24975; Tue, 30 Mar 2004 12:56:05 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma024624; Tue, 30 Mar 2004 12:55:12 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id DAA24402 for linac-eng-list; Tue, 30 Mar 2004 03:16:22 -0600 (CST) Received: from armstrong.azu.nl (armstrong.azu.nl [143.121.254.1]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id DAA24398 for ; Tue, 30 Mar 2004 03:16:19 -0600 (CST) Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id LAA25407 for ; Tue, 30 Mar 2004 11:17:48 +0200 (MET DST) Received: from hubbard.azu.nl(143.121.16.9) by armstrong.azu.nl via smap (V1.3) id xma024896; Tue, 30 Mar 2004 11:16:19 +0200 Received: from ketel1.azu.nl by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with ESMTP id <0HVD008PYTNSWP@hubbard.azu.nl> for linac-eng@plato.aristotle.net; Tue, 30 Mar 2004 11:14:17 +0200 (MET DST) Received: from shaker.azu.nl ([143.121.145.231] helo=azu.nl) by ketel1.azu.nl with esmtp (Exim 3.35 #1 (Debian)) id 1B8FL1-0004cC-00 for ; Tue, 30 Mar 2004 11:15:15 +0200 Date: Tue, 30 Mar 2004 11:15:14 +0200 From: =?ISO-8859-1?Q?Andr=E9_Klaver?= Subject: Elekta Precise: Replacement of Optic cables and transmitters/receivers Sender: owner-linac-eng@plato.aristotle.net To: Linac-eng Message-id: <40693AA2.2080900@azu.nl> MIME-version: 1.0 Content-type: text/html; charset=us-ascii Content-transfer-encoding: 7bit Precedence: bulk User-Agent: Mozilla Thunderbird 0.5 (Windows/20040207) X-Accept-Language: en-us, en X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 30 Mar 2004 11:15:14 +0200 From: =?ISO-8859-1?Q?Andr=E9_Klaver?= Subject: Elekta Precise: Replacement of Optic cables and transmitters/receivers Sender: owner-linac-eng@plato.aristotle.net To: Linac-eng X-Accept-Language: en-us, en X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f


Elekta Precise treatment system

Replacement of Optic cables and transmitters/receivers

We have had some problems with the optical cables and transmitter/receivers in our system on a regular base (e.g. PFN V MON H.E., REVERSE DIODE O/L, etc. Take drawing number 4513 390 4104 for example). In this post I will just show you the experiences I had with the cabling and other parts in the optical path. In most cases I’ve seen that the cable it self is broken somewhere near the plug or just degraded. I assume the cause of this is torsion, radiation or technicians not paying attention while leaning on the machine. Sometimes even the transmitter or receiver on the PCB can be faulty (been slept on by the tech guy then probably).

To get an idea what is happening with the cables or just to test which one is mall functioning I wanted to be able to measure them on my test bench. The components of the transmission path were easy to get really. Just check a Farnell catalogue for instance and look for the ‘Versatile Link’ modules made by Agilent Technologies (http://www.agilent.com, look for “General Purpose, Industrial Control Data Link (650nm)”). For the Elekta machines the transmitter used is the HFBR1523 and the receiver the HFBR2523. The cables and plugs should be ordered according these components of course. With the kits available you can easily make lots of cables your self and not be bothered with deliverability anymore. Also you can just replace the defected cable and leave the good ones in place.

With the datasheets you can easily make a setup to check whether your cables are good or not. You could start by applying a DC voltage to the transmitter to check the thresholds on the receiver side. Simply vary your voltage and see were the receiver flips. Note that the amount of light transmitted is linear to the current applied. Be careful not to source too much current in the transmitter (about 60 mA/DC max). The results differ per cable and even more per defected or used cables. It can be quite amazing to see how bad the transmission of the cables can be. If you want to automate it a bit more apply a saw-tooth current source to the transmitter and you will be able to judge the quality of the cables simply by looking at the duty cycle on the output. Do a reference measurement on a good cable first of course before comparing anything.

As I have said earlier you can also encounter defected PCB parts in the optical path. If you have checked the cables and are sure of which part is defected simply replace it with one out of the stack you have ordered already. These parts are usually not that hard to access and it is well worth the effort to do it your self.

A final remark on the modules by Agilent. You do not necessarily need the HFBR1523. Other transmitters and receivers simply have different bandwidth specifications and driving capabilities per length of the cable. I have had a 1523 replaced by a 1521 without problems for instance.

Andre Klaver

References:
http://www.agilent.com
http://we.home.agilent.com/cgi-bin/bvpub/agilent/Product/cp_ProductComparison.jsp?NAV_ID=-536893524.0.00&LANGUAGE_CODE=eng&COUNTRY_CODE=US
http://www.farnell.com

 

Direct link to Datasheet:
HFBR-15xx Datasheet

 1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HVE00F0WJWLB6@hubbard.azu.nl>; Tue, 30 Mar 2004 20:41:10 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004033020410911237 ; Tue, 30 Mar 2004 20:41:09 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id UAA28194; Tue, 30 Mar 2004 20:43:10 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma028111; Tue, 30 Mar 2004 20:42:48 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id KAA04672 for linac-eng-list; Tue, 30 Mar 2004 10:49:12 -0600 (CST) Received: from web40713.mail.yahoo.com (web40713.mail.yahoo.com [66.218.78.170]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id KAA04668 for ; Tue, 30 Mar 2004 10:49:08 -0600 (CST) Received: from [163.246.196.217] by web40713.mail.yahoo.com via HTTP; Tue, 30 Mar 2004 08:41:42 -0800 (PST) Date: Tue, 30 Mar 2004 08:41:42 -0800 (PST) From: Russ Olsen Subject: Varian Clinac 2300CD for sale In-reply-to: <4631AA4F502ED711AE0700A0C9EBCF2964F6CF@bajor.tsrcc.on.ca> Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <20040330164142.58820.qmail@web40713.mail.yahoo.com> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 30 Mar 2004 08:41:42 -0800 (PST) From: Russ Olsen Subject: Varian Clinac 2300CD for sale In-reply-to: <4631AA4F502ED711AE0700A0C9EBCF2964F6CF@bajor.tsrcc.on.ca> Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Can anyone provide contact info of dealers that buy and sell Linacs? For sale: Varian Clinac 2300CD S/N 31 Millenium 120 MLC installed 2002 PortalVision (aSi) 18MV,6MV,22MEV,18MEV,15MEV,12MEV,9MEV,6MEV Filament Hours = 36972 High Voltage Hours = 01741 Contact: Russ Olsen Emory University School of Medicine Department of Radiation Oncology 1365 Clifton Rd, Suite A1308 Atlanta, GA 30322 404-778-2359 __________________________________ Do you Yahoo!? Yahoo! Finance Tax Center - File online. File on time. http://taxes.yahoo.com/filing.html  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HVE00L7FOF5XB@hubbard.azu.nl>; Tue, 30 Mar 2004 22:18:42 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004033022184012875 ; Tue, 30 Mar 2004 22:18:40 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id WAA16713; Tue, 30 Mar 2004 22:20:41 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma016589; Tue, 30 Mar 2004 22:20:16 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id MAA05938 for linac-eng-list; Tue, 30 Mar 2004 12:13:58 -0600 (CST) Received: from webshield2.swchsc.on.ca ([142.76.1.63]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id MAA05930 for ; Tue, 30 Mar 2004 12:13:53 -0600 (CST) Received: from unknown(142.76.240.40) by webshield2.swchsc.on.ca via csmap id 3ef54312_824c_11d8_9c1a_0002b3c25eda_28144; Tue, 30 Mar 2004 13:15:00 +0000 (UTC) Received: by bajor.tsrcc.on.ca with Internet Mail Service (5.5.2653.19) id ; Tue, 30 Mar 2004 13:13:22 -0500 Date: Tue, 30 Mar 2004 13:13:18 -0500 From: "Rozenblat, Alex" Subject: Electa linac power supplies. Sender: owner-linac-eng@plato.aristotle.net To: "'linac-eng@plato.aristotle.net'" Message-id: <4631AA4F502ED711AE0700A0C9EBCF2964F6D0@bajor.tsrcc.on.ca> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_ZFm7K9Dw+RHtIVBDNYJU1w)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 30 Mar 2004 13:13:18 -0500 From: "Rozenblat, Alex" Subject: Electa linac power supplies. Sender: owner-linac-eng@plato.aristotle.net To: "'linac-eng@plato.aristotle.net'" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_ZFm7K9Dw+RHtIVBDNYJU1w) Content-type: text/plain; charset=iso-8859-1 Hello, fellows I would like to understand what PCBs are involved into converting a real physical voltage from Hitron Power Supply (PS) into Items 280 ( -15V) and 281 (+15V) which we see on monitor. Basically, I need a functional drawing showing this path. The reason is: I am having an intermittent terminations on Item 281 (+15V voltage lower than the low limit). I can see through cycling Item 281 on monitor that the lowest readback is 14.84V which should be above the limit anyway. When Termination occurs the Debug captures the address which leads me to Area 16 side B (as per Electa procedure). But when I measured physically voltage on this side it's +14.95V - what else does one need for complete happiness? So, I can not blame the PS. Or may be I should? I was told that only two PCBs are involved into processing of physical voltage into Item - those are SCC and AI12. I changed them both in the "faulty" area and I can see on screen that the lowest voltage (14.84) is still here (I don't know though if the lowest voltage is from the "faulty" area) and termination on 281 still happens (very occasionally). Of course I can change the limit for the Item (like I was advised) or can change PS which I am sure is fine but I'd like to see if I am missing something. Unfortunately, I can not find any related schematic in my collection. Plus, if it was a certain PCB which is a culprit the functional schematic would help me to fix it since I would know Input/Output for the signals. Thank you, Alex Rozenblat TSRCC, Toronto --Boundary_(ID_ZFm7K9Dw+RHtIVBDNYJU1w) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: quoted-printable Electa linac power supplies.

Hello, fellows

I would like to understand what PCBs = are involved into converting a real physical voltage from Hitron Power = Supply (PS)  into Items 280 ( -15V) and 281 (+15V) which we see on = monitor. Basically, I need a functional drawing showing this = path.

The reason is: I am having an = intermittent terminations on Item 281 (+15V voltage lower than the low = limit). I can see through cycling Item 281 on monitor that the lowest = readback is 14.84V which should be above the limit anyway.

When Termination occurs the Debug = captures the address which leads me to Area 16 side B (as per Electa = procedure). But when I measured physically voltage on this side it's = +14.95V -  what else does one need for complete happiness? So, I = can not blame the PS.

Or may be I should?
I was told that only two PCBs are = involved into processing of physical voltage into Item - those are SCC = and AI12. I changed them both in the "faulty" area and I can = see on screen that the lowest voltage (14.84) is still here (I don't = know though if the lowest voltage is from the "faulty" area) = and termination on 281 still happens (very occasionally).

Of course I can change the limit for = the Item (like I was advised) or can change PS which I am sure is fine = but I'd like to see if I am missing something. Unfortunately, I can not = find any related schematic in my collection. Plus, if it was a certain = PCB which is a culprit the functional schematic would help me to fix it = since I would know Input/Output for the signals.

Thank you,

Alex Rozenblat
TSRCC, Toronto

--Boundary_(ID_ZFm7K9Dw+RHtIVBDNYJU1w)--  1,, X-Coding-System: undecided-unix Return-path: Received: from ketel1.azu.nl by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with ESMTP id <0HVF00108J79R0@hubbard.azu.nl> for jkok@sims-ms-daemon; Wed, 31 Mar 2004 09:23:36 +0200 (MET DST) Received: from triangel.azu.nl ([143.121.145.24] ident=mail) by ketel1.azu.nl with esmtp (Exim 3.35 #1 (Debian)) id 1B8a5Y-0006jo-00; Wed, 31 Mar 2004 09:24:40 +0200 Received: from kok by triangel.azu.nl with local (Exim 3.35 #1 (Debian)) id 1B8a5X-0005SA-00; Wed, 31 Mar 2004 09:24:39 +0200 Date: Wed, 31 Mar 2004 09:24:39 +0200 From: Jan Kok Subject: Electa linac power supplies. To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 Content-type: TEXT/PLAIN; CHARSET=US-ASCII *** EOOH *** Date: Wed, 31 Mar 2004 09:24:39 +0200 From: Jan Kok Subject: Electa linac power supplies. To: linac-eng@plato.aristotle.net Hello Alex, In a control area the supplies of both power units are checked. Remember that side A checks the supply of side B and visa versa. So if Area 16 side B reads a bad 15V, check the power unit at side A. Best thing to do is replacing the PS (check the Internet for a local reseller) or swap one with a PS from the ICCA (if gantry rotation is inducing the inhibit.) regards Jan  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HVF005NNLOUKY@hubbard.azu.nl>; Wed, 31 Mar 2004 10:17:23 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004033110171721536 ; Wed, 31 Mar 2004 10:17:17 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id KAA15173; Wed, 31 Mar 2004 10:19:18 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma014925; Wed, 31 Mar 2004 10:18:28 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id AAA23211 for linac-eng-list; Wed, 31 Mar 2004 00:31:36 -0600 (CST) Received: from mail1.aaa.dk (mail1.aaa.dk [212.130.128.220]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id AAA23207 for ; Wed, 31 Mar 2004 00:31:30 -0600 (CST) Received: from MAILGATE-MTA by mail1.aaa.dk with Novell_GroupWise; Wed, 31 Mar 2004 08:30:58 +0200 Date: Wed, 31 Mar 2004 08:22:19 +0200 From: "Ole G. Nielsen" Subject: Svar: Electa linac power supplies. Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net, Alex.Rozenblat@sw.ca Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.5.1 Content-type: text/plain; charset=US-ASCII Content-disposition: inline Content-transfer-encoding: 7bit Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 31 Mar 2004 08:22:19 +0200 From: "Ole G. Nielsen" Subject: Svar: Electa linac power supplies. Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net, Alex.Rozenblat@sw.ca Content-disposition: inline X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hello Alex, According our experience these Power Supplies fails from time to time. In your case it seems like the power supply fails temporary which is quiet normal and the first hint to change it - especially if it happens mostly at mornings after power on ? These power supplies are not that expensive at Elekta. So I would recommend to change it and if that don't help THEN do the thinking. If you decide to change only 1 of the 2 power supplies on back of the cabinet you probably already know that the power supply in the "A-side" serves the pcb's in the "B-side" and vice versa. I guess that is why I love English humour. Best regards Ole Ole G. Nielsen Dept. of Medical Physics Aarhus University Hospital Phone +45 8949 2487 Fax +45 8949 2590 >>> "Rozenblat, Alex" 30-03-2004 20:13:18 >>> Hello, fellows I would like to understand what PCBs are involved into converting a real physical voltage from Hitron Power Supply (PS) into Items 280 ( -15V) and 281 (+15V) which we see on monitor. Basically, I need a functional drawing showing this path. The reason is: I am having an intermittent terminations on Item 281 (+15V voltage lower than the low limit). I can see through cycling Item 281 on monitor that the lowest readback is 14.84V which should be above the limit anyway. When Termination occurs the Debug captures the address which leads me to Area 16 side B (as per Electa procedure). But when I measured physically voltage on this side it's +14.95V - what else does one need for complete happiness? So, I can not blame the PS. Or may be I should? I was told that only two PCBs are involved into processing of physical voltage into Item - those are SCC and AI12. I changed them both in the "faulty" area and I can see on screen that the lowest voltage (14.84) is still here (I don't know though if the lowest voltage is from the "faulty" area) and termination on 281 still happens (very occasionally). Of course I can change the limit for the Item (like I was advised) or can change PS which I am sure is fine but I'd like to see if I am missing something. Unfortunately, I can not find any related schematic in my collection. Plus, if it was a certain PCB which is a culprit the functional schematic would help me to fix it since I would know Input/Output for the signals. Thank you, Alex Rozenblat TSRCC, Toronto  1,, X-Coding-System: undecided-unix Return-path: Disposition-notification-to: CJ.de.Bruijne@walcheren.ziekenhuis.nl Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HVF0069ALS2EE@hubbard.azu.nl>; Wed, 31 Mar 2004 10:19:16 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004033110191321580 ; Wed, 31 Mar 2004 10:19:13 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id KAA15663; Wed, 31 Mar 2004 10:21:15 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma015344; Wed, 31 Mar 2004 10:20:07 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id AAA23412 for linac-eng-list; Wed, 31 Mar 2004 00:47:00 -0600 (CST) Received: from zws10.zwv.nl ([212.115.200.190]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id AAA23408 for ; Wed, 31 Mar 2004 00:46:56 -0600 (CST) Date: Wed, 31 Mar 2004 08:45:29 +0200 From: CJ.de.Bruijne@walcheren.ziekenhuis.nl Subject: Varian Digital gun EEPROM error Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <59A37C5E01DB0949A6D0324C2C13EACB047BD3@zws10.zwv.nl> MIME-version: 1.0 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_r3VUa5U+PXyqqNBZ/da0qg)" Precedence: bulk X-MimeOLE: Produced By Microsoft Exchange V6.0.6487.1 content-class: urn:content-classes:message Thread-Topic: Varian Digital gun EEPROM error Thread-Index: AcQW6/LxONJu5oLXEdi+zwCw0Dh2yQ== X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Disposition-notification-to: CJ.de.Bruijne@walcheren.ziekenhuis.nl Date: Wed, 31 Mar 2004 08:45:29 +0200 From: CJ.de.Bruijne@walcheren.ziekenhuis.nl Subject: Varian Digital gun EEPROM error Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-MimeOLE: Produced By Microsoft Exchange V6.0.6487.1 content-class: urn:content-classes:message Thread-Topic: Varian Digital gun EEPROM error Thread-Index: AcQW6/LxONJu5oLXEdi+zwCw0Dh2yQ== X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This is a multi-part message in MIME format. --Boundary_(ID_r3VUa5U+PXyqqNBZ/da0qg) Content-type: text/plain; charset=us-ascii Content-transfer-encoding: quoted-printable Hi brave engineers, We do have a problem with a Varian digital gun. As soon as we (in servicemode) switch to 'motorpot on' a GFIL interlock = occures. Opening gundeck shows us a flashing controller display with a EEPROM = error message. This message disapears when returning to normal mode. What are we goin-to-do with this? Regards Keesjan de Bruijne Biomedical Engineer Ziekenhuis Walcheren Vlissingen, the Netherlands dep. DIA cj.de.bruijne@walcheren.ziekenhuis.nl --Boundary_(ID_r3VUa5U+PXyqqNBZ/da0qg) Content-type: text/html; charset=us-ascii Content-transfer-encoding: quoted-printable Varian Digital gun EEPROM error

Hi = brave  engineers,

We do have a = problem with a Varian digital gun.
As soon as = we (in servicemode) switch to 'motorpot on' a GFIL interlock = occures.
Opening = gundeck shows us a flashing controller display with a EEPROM error = message.
This message = disapears when returning to normal mode.

What are we = goin-to-do with this?

Regards
Keesjan de Bruijne
Biomedical Engineer
Ziekenhuis Walcheren
Vlissingen, the Netherlands
dep. DIA
cj.de.bruijne@walcheren.ziekenhuis.nl





--Boundary_(ID_r3VUa5U+PXyqqNBZ/da0qg)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HVF009TGNPSJT@hubbard.azu.nl>; Wed, 31 Mar 2004 11:01:45 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004033111014022741 ; Wed, 31 Mar 2004 11:01:40 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id LAA28642; Wed, 31 Mar 2004 11:03:42 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma028299; Wed, 31 Mar 2004 11:02:31 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id BAA23928 for linac-eng-list; Wed, 31 Mar 2004 01:25:25 -0600 (CST) Received: from armstrong.azu.nl (armstrong.azu.nl [143.121.254.1]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id BAA23924 for ; Wed, 31 Mar 2004 01:25:19 -0600 (CST) Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id JAA29415 for ; Wed, 31 Mar 2004 09:26:48 +0200 (MET DST) Received: from hubbard.azu.nl(143.121.16.9) by armstrong.azu.nl via smap (V1.3) id xma029108; Wed, 31 Mar 2004 09:25:41 +0200 Received: from ketel1.azu.nl by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with ESMTP id <0HVF00108J79R0@hubbard.azu.nl> for linac-eng@plato.aristotle.net; Wed, 31 Mar 2004 09:23:38 +0200 (MET DST) Received: from triangel.azu.nl ([143.121.145.24] ident=mail) by ketel1.azu.nl with esmtp (Exim 3.35 #1 (Debian)) id 1B8a5Y-0006jo-00; Wed, 31 Mar 2004 09:24:40 +0200 Received: from kok by triangel.azu.nl with local (Exim 3.35 #1 (Debian)) id 1B8a5X-0005SA-00; Wed, 31 Mar 2004 09:24:39 +0200 Date: Wed, 31 Mar 2004 09:24:39 +0200 From: Jan Kok Subject: Electa linac power supplies. Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 Content-type: TEXT/PLAIN; CHARSET=US-ASCII Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 31 Mar 2004 09:24:39 +0200 From: Jan Kok Subject: Electa linac power supplies. Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hello Alex, In a control area the supplies of both power units are checked. Remember that side A checks the supply of side B and visa versa. So if Area 16 side B reads a bad 15V, check the power unit at side A. Best thing to do is replacing the PS (check the Internet for a local reseller) or swap one with a PS from the ICCA (if gantry rotation is inducing the inhibit.) regards Jan  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HVF00A1JNSLL7@hubbard.azu.nl>; Wed, 31 Mar 2004 11:02:46 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004033111024422774 ; Wed, 31 Mar 2004 11:02:44 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id LAA28907; Wed, 31 Mar 2004 11:04:46 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma028393; Wed, 31 Mar 2004 11:03:07 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id BAA24015 for linac-eng-list; Wed, 31 Mar 2004 01:32:10 -0600 (CST) Received: from mail22.nhs.uk (mail22.nhs.uk [62.6.139.218]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id BAA24009 for ; Wed, 31 Mar 2004 01:32:02 -0600 (CST) Received: from [10.191.254.3] (helo=relayint2.nhs.uk) by mail22.nhs.uk with esmtp (MTC MTA) id 1B8aCC-0003dZ-Ex for linac-eng@plato.aristotle.net; Wed, 31 Mar 2004 08:31:32 +0100 Received: from relay.nhs.uk (194.62.42.143) by relayint2.nhs.uk (Syntegra-I2 7.0.008) id 4039DF71009D5868 for linac-eng@plato.aristotle.net; Wed, 31 Mar 2004 08:31:32 +0100 Received: from ubht.swest.nhs.uk (194.101.53.2) by relay.nhs.uk (Syntegra-3 7.0.008) id 406988BA0004929D for linac-eng@plato.aristotle.net; Wed, 31 Mar 2004 08:31:32 +0100 Received: by ubhtfw1.ubht.swest.nhs.uk id <119041>; Wed, 31 Mar 2004 08:10:38 +0100 Date: Wed, 31 Mar 2004 08:31:24 +0100 From: "Cooper, Malcolm" Subject: re voltage monitor Sender: owner-linac-eng@plato.aristotle.net To: "'linac-eng@plato.aristotle.net'" Message-id: <04Mar31.081038bst.119041@ubhtfw1.ubht.swest.nhs.uk> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 31 Mar 2004 08:31:24 +0100 From: "Cooper, Malcolm" Subject: re voltage monitor Sender: owner-linac-eng@plato.aristotle.net To: "'linac-eng@plato.aristotle.net'" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f VOLTAGE MONITORS SL series The voltage monitor/positional reference items continually monitor the voltages within the six control areas. When a problem occurs with the voltage in one of these areas the part 104 and 105 (104 =rtu 105=channel) are supposed to be frozen to indicate which RTU and channel is faulty. However, due to the queue system the part 104 and 105 can sometimes indicate the wrong value. There follows a brief description of how the items determine which RTU and Channel to look at and, perhaps, a more reliable way of determining which is at fault. Taking +15v sys i281 as an example: When part 130 is set to 19, the item looks at the process parameters, parts 131,132,133,134,135,136.in turn. A computation is then carried out on the values within these parts to determine which RTU and Channel is examined for information thus: P130=19 p131=15393 p132=7201 p133=31777 p134=23585 p135=17375 p136=2556 Taking pt131 = 15393 15393 convert to hex = 3C21 3C21 convert to BCD 0011 1100 0010 0001 Discard bit 11 0011 1 00 0010 0001 Remaining groups are split up 001|1 1 00 001|0 0001 These groups are converted to base 10 1 97 not used Thus the system will access channel 97 (15vsys) 15393 = 3C21 = RTU 1 (ICCA B) Similarly: 7201 = 1C21 = RTU 0 Ch. 97 31777 = 7C21 = RTU 3 Ch.97 23585 = 5C21 = RTU 2 Ch. 97 -17375 = BC21 = RTU 5 Ch. 97 -25567 = 9C21 = RTU 4 Ch. 97 The same theory can be applied to all of the other monitor items ie i280 will access Ch. 96 (-15v sys ) of all six RTU's. If a faulty voltage is detected the value of the appropriate process parameter (p130's) being processed at the time is held in part 153. Applying the above calculation to this number will give the faulty RTU NB if the +/- 15v and +5 v monitors point towards a particular RTU then the faulty PSU is on the opposite side. RTU1 is ICCA/B but the faulty PSU would be in ICCA/A.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HVF00C2UONIX4@hubbard.azu.nl>; Wed, 31 Mar 2004 11:21:20 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004033111211823308 ; Wed, 31 Mar 2004 11:21:18 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id LAA05051; Wed, 31 Mar 2004 11:23:19 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma004411; Wed, 31 Mar 2004 11:21:26 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id BAA24120 for linac-eng-list; Wed, 31 Mar 2004 01:36:21 -0600 (CST) Received: from mail21.nhs.uk (mail21.nhs.uk [62.6.139.215]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id BAA24116 for ; Wed, 31 Mar 2004 01:36:17 -0600 (CST) Received: from [10.191.254.3] (helo=relayint2.nhs.uk) by mail21.nhs.uk with esmtp (MTC MTA) id 1B8aGI-0004IK-Fw for linac-eng@plato.aristotle.net; Wed, 31 Mar 2004 08:35:46 +0100 Received: from relay.nhs.uk (194.62.42.141) by relayint2.nhs.uk (Syntegra-I2 7.0.008) id 4039DF71009D5D69 for linac-eng@plato.aristotle.net; Wed, 31 Mar 2004 08:35:46 +0100 Received: from ubht.swest.nhs.uk (194.101.53.2) by relay.nhs.uk (Syntegra-1 7.0.008) id 4069A57300016C66 for linac-eng@plato.aristotle.net; Wed, 31 Mar 2004 08:35:46 +0100 Received: by ubhtfw1.ubht.swest.nhs.uk id <119044>; Wed, 31 Mar 2004 08:14:50 +0100 Date: Wed, 31 Mar 2004 08:35:35 +0100 From: "Cooper, Malcolm" Subject: Recall: re voltage monitor Sender: owner-linac-eng@plato.aristotle.net To: "'linac-eng@plato.aristotle.net'" Message-id: <04Mar31.081450bst.119044@ubhtfw1.ubht.swest.nhs.uk> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: text/plain; CHARSET=US-ASCII Expiry-date: Fri, 02 Apr 2004 08:31:48 +0100 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 31 Mar 2004 08:35:35 +0100 From: "Cooper, Malcolm" Subject: Recall: re voltage monitor Sender: owner-linac-eng@plato.aristotle.net To: "'linac-eng@plato.aristotle.net'" Expiry-date: Fri, 02 Apr 2004 08:31:48 +0100 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Cooper, Malcolm would like to recall the message, "re voltage monitor".  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HVF00E5CPOVTP@hubbard.azu.nl>; Wed, 31 Mar 2004 11:44:16 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004033111440723977 ; Wed, 31 Mar 2004 11:44:07 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id LAA12721; Wed, 31 Mar 2004 11:46:08 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma012187; Wed, 31 Mar 2004 11:44:38 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id BAA24706 for linac-eng-list; Wed, 31 Mar 2004 01:58:12 -0600 (CST) Received: from mail23.nhs.uk (mail23.nhs.uk [62.6.139.221]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id BAA24696 for ; Wed, 31 Mar 2004 01:58:06 -0600 (CST) Received: from [10.191.254.3] (helo=relayint2.nhs.uk) by mail23.nhs.uk with esmtp (MTC MTA) id 1B8abP-00067z-Vo for linac-eng@plato.aristotle.net; Wed, 31 Mar 2004 08:57:35 +0100 Received: from relay.nhs.uk (194.62.42.141) by relayint2.nhs.uk (Syntegra-I2 7.0.008) id 4039DF71009D7FD6 for linac-eng@plato.aristotle.net; Wed, 31 Mar 2004 08:57:35 +0100 Received: from ubht.swest.nhs.uk (194.101.53.2) by relay.nhs.uk (Syntegra-1 7.0.008) id 4069A5730001A7B0 for linac-eng@plato.aristotle.net; Wed, 31 Mar 2004 08:57:35 +0100 Received: by ubhtfw1.ubht.swest.nhs.uk id <119044>; Wed, 31 Mar 2004 08:36:34 +0100 Date: Wed, 31 Mar 2004 08:57:19 +0100 From: "Cooper, Malcolm" Subject: Elekta PSU Sender: owner-linac-eng@plato.aristotle.net To: "'linac-eng@plato.aristotle.net'" Message-id: <04Mar31.083634bst.119044@ubhtfw1.ubht.swest.nhs.uk> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 31 Mar 2004 08:57:19 +0100 From: "Cooper, Malcolm" Subject: Elekta PSU Sender: owner-linac-eng@plato.aristotle.net To: "'linac-eng@plato.aristotle.net'" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hi there, I would change both the PSU's in the relevent control area. The system may not be reporting the low voltage as it could be dropping out for a short time and the delay in the sampling could miss it. This is a description of how the parts and items are used to show the PSU voltages. I got the information from Elekta. The voltage monitor/positional reference items continually monitor the voltages within the six control areas. When a problem occurs with the voltage in one of these areas the part 104 and 105 (104 =rtu 105=channel) are supposed to be frozen to indicate which RTU and channel is faulty. However, due to the queue system the part 104 and 105 can sometimes indicate the wrong value. There follows a brief description of how the items determine which RTU and Channel to look at and, perhaps, a more reliable way of determining which is at fault. Taking +15v sys i281 as an example: When part 130 is set to 19, the item looks at the process parameters, parts 131,132,133,134,135,136.in turn. A computation is then carried out on the values within these parts to determine which RTU and Channel is examined for information thus: P130=19 p131=15393 p132=7201 p133=31777 p134=23585 p135=17375 p136=2556 Taking pt131 = 15393 15393 convert to hex = 3C21 3C21 convert to BCD 0011 1100 0010 0001 Discard bit 11 0011 1 00 0010 0001 Remaining groups are split up 001|1 1 00 001|0 0001 These groups are converted to base 10 1 97 not used Thus the system will access channel 97 (15vsys) 15393 = 3C21 = RTU 1 (ICCA B) Similarly: 7201 = 1C21 = RTU 0 Ch. 97 31777 = 7C21 = RTU 3 Ch.97 23585 = 5C21 = RTU 2 Ch. 97 -17375 = BC21 = RTU 5 Ch. 97 -25567 = 9C21 = RTU 4 Ch. 97 The same theory can be applied to all of the other monitor items ie i280 will access Ch. 96 (-15v sys ) of all six RTU's. If a faulty voltage is detected the value of the appropriate process parameter (p130's) being processed at the time is held in part 153. Applying the above calculation to this number will give the faulty RTU NB if the +/- 15v and +5 v monitors point towards a particular RTU then the faulty PSU is on the opposite side. RTU1 is ICCA/B but the faulty PSU would be in ICCA/A. I hope it makes sense! Malcolm Cooper (Bristol UK)  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HVF001RJUU6YQ@hubbard.azu.nl>; Wed, 31 Mar 2004 13:35:13 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004033113351027269 ; Wed, 31 Mar 2004 13:35:10 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id NAA19237; Wed, 31 Mar 2004 13:37:12 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma018731; Wed, 31 Mar 2004 13:35:44 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id DAA27881 for linac-eng-list; Wed, 31 Mar 2004 03:49:14 -0600 (CST) Received: from mail20.nhs.uk (mail20.nhs.uk [62.6.139.212]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id DAA27862 for ; Wed, 31 Mar 2004 03:48:50 -0600 (CST) Received: from [10.191.254.3] (helo=relayint1.nhs.uk) by mail20.nhs.uk with esmtp (MTC MTA) id 1B8cKZ-0004jZ-LK for linac-eng@plato.aristotle.net; Wed, 31 Mar 2004 10:48:19 +0100 Received: from relay.nhs.uk (194.62.42.142) by relayint1.nhs.uk (Syntegra-I1 7.0.008) id 40694D7000048F31 for linac-eng@plato.aristotle.net; Wed, 31 Mar 2004 10:48:19 +0100 Received: from beijing.relay.grampian.scot.nhs.uk (10.251.30.7) by relay.nhs.uk (Syntegra-2 7.0.008) (authenticated as relay_grampian_scot_nhs_uk@es2002.nhs.uk) id 406A84760000CA87; Wed, 31 Mar 2004 10:48:19 +0100 Received: from mail pickup service by beijing.relay.grampian.scot.nhs.uk with Microsoft SMTPSVC; Wed, 31 Mar 2004 10:42:13 +0100 Received: from relay.nhs.uk ([194.62.42.123]) by beijing.relay.grampian.scot.nhs.uk with Microsoft SMTPSVC(5.0.2195.6713) ; Wed, 31 Mar 2004 09:09:42 +0100 Received: from mail11.nhs.uk (62.6.139.203) by relay.nhs.uk (Syntegra-2 7.0.008) id 4069885D000443C5; Wed, 31 Mar 2004 09:10:32 +0100 Received: from plato.aristotle.net ([206.66.224.2]) by mail11.nhs.uk with esmtp (MTC MTA) id 1B8anv-0001Z7-T7; Wed, 31 Mar 2004 09:10:32 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id AAA23211 for linac-eng-list; Wed, 31 Mar 2004 00:31:36 -0600 (CST) Received: from mail1.aaa.dk (mail1.aaa.dk [212.130.128.220]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id AAA23207 for ; Wed, 31 Mar 2004 00:31:30 -0600 (CST) Received: from MAILGATE-MTA by mail1.aaa.dk with Novell_GroupWise; Wed, 31 Mar 2004 08:30:58 +0200 Date: Wed, 31 Mar 2004 08:22:19 +0200 From: "Ole G. Nielsen" Subject: Svar: Electa linac power supplies. [Scanned By SOPHOS Anti-Virus] Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net, Alex.Rozenblat@sw.ca Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.5.1 Content-type: text/plain; charset=US-ASCII Content-disposition: inline Content-transfer-encoding: 7bit Importance: normal Precedence: bulk thread-index: AcQW94XDB5VpEx5MQiGFmtxPYVAbfw== Content-Class: urn:content-classes:message X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4927.1200 X-OriginalArrivalTime: 31 Mar 2004 08:09:42.0968 (UTC) FILETIME=[85BC9B80:01C416F7] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 31 Mar 2004 08:22:19 +0200 From: "Ole G. Nielsen" Subject: Svar: Electa linac power supplies. [Scanned By SOPHOS Anti-Virus] Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net, Alex.Rozenblat@sw.ca Content-disposition: inline Importance: normal thread-index: AcQW94XDB5VpEx5MQiGFmtxPYVAbfw== Content-Class: urn:content-classes:message X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4927.1200 X-OriginalArrivalTime: 31 Mar 2004 08:09:42.0968 (UTC) FILETIME=[85BC9B80:01C416F7] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hello Alex, According our experience these Power Supplies fails from time to time. In your case it seems like the power supply fails temporary which is quiet normal and the first hint to change it - especially if it happens mostly at mornings after power on ? These power supplies are not that expensive at Elekta. So I would recommend to change it and if that don't help THEN do the thinking. If you decide to change only 1 of the 2 power supplies on back of the cabinet you probably already know that the power supply in the "A-side" serves the pcb's in the "B-side" and vice versa. I guess that is why I love English humour. Best regards Ole Ole G. Nielsen Dept. of Medical Physics Aarhus University Hospital Phone +45 8949 2487 Fax +45 8949 2590 >>> "Rozenblat, Alex" 30-03-2004 20:13:18 >>> Hello, fellows I would like to understand what PCBs are involved into converting a real physical voltage from Hitron Power Supply (PS) into Items 280 ( -15V) and 281 (+15V) which we see on monitor. Basically, I need a functional drawing showing this path. The reason is: I am having an intermittent terminations on Item 281 (+15V voltage lower than the low limit). I can see through cycling Item 281 on monitor that the lowest readback is 14.84V which should be above the limit anyway. When Termination occurs the Debug captures the address which leads me to Area 16 side B (as per Electa procedure). But when I measured physically voltage on this side it's +14.95V - what else does one need for complete happiness? So, I can not blame the PS. Or may be I should? I was told that only two PCBs are involved into processing of physical voltage into Item - those are SCC and AI12. I changed them both in the "faulty" area and I can see on screen that the lowest voltage (14.84) is still here (I don't know though if the lowest voltage is from the "faulty" area) and termination on 281 still happens (very occasionally). Of course I can change the limit for the Item (like I was advised) or can change PS which I am sure is fine but I'd like to see if I am missing something. Unfortunately, I can not find any related schematic in my collection. Plus, if it was a certain PCB which is a culprit the functional schematic would help me to fix it since I would know Input/Output for the signals. Thank you, Alex Rozenblat TSRCC, Toronto  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HVF002EVUXLSA@hubbard.azu.nl>; Wed, 31 Mar 2004 13:37:04 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004033113370127322 ; Wed, 31 Mar 2004 13:37:01 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id NAA19828; Wed, 31 Mar 2004 13:39:02 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma019272; Wed, 31 Mar 2004 13:37:17 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id DAA27880 for linac-eng-list; Wed, 31 Mar 2004 03:49:11 -0600 (CST) Received: from mail21.nhs.uk (mail21.nhs.uk [62.6.139.215]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id DAA27866 for ; Wed, 31 Mar 2004 03:48:51 -0600 (CST) Received: from [10.191.254.3] (helo=relayint2.nhs.uk) by mail21.nhs.uk with esmtp (MTC MTA) id 1B8cKa-0001qT-Eg for linac-eng@plato.aristotle.net; Wed, 31 Mar 2004 10:48:20 +0100 Received: from relay.nhs.uk (194.62.42.144) by relayint2.nhs.uk (Syntegra-I2 7.0.008) id 4039DF71009E83A3 for linac-eng@plato.aristotle.net; Wed, 31 Mar 2004 10:48:20 +0100 Received: from beijing.relay.grampian.scot.nhs.uk (10.251.30.7) by relay.nhs.uk (Syntegra-4 7.0.008) (authenticated as relay_grampian_scot_nhs_uk@es2002.nhs.uk) id 406A85410000AF68 for linac-eng@plato.aristotle.net; Wed, 31 Mar 2004 10:48:20 +0100 Received: from mail pickup service by beijing.relay.grampian.scot.nhs.uk with Microsoft SMTPSVC; Wed, 31 Mar 2004 10:42:31 +0100 Received: from relay.nhs.uk ([194.62.42.123]) by beijing.relay.grampian.scot.nhs.uk with Microsoft SMTPSVC(5.0.2195.6713) ; Wed, 31 Mar 2004 10:29:27 +0100 Received: from mail11.nhs.uk (62.6.139.203) by relay.nhs.uk (Syntegra-2 7.0.008) id 406A8476000094BA; Wed, 31 Mar 2004 10:30:23 +0100 Received: from plato.aristotle.net ([206.66.224.2]) by mail11.nhs.uk with esmtp (MTC MTA) id 1B8c3D-0006ur-Fs; Wed, 31 Mar 2004 10:30:23 +0100 Received: by plato.aristotle.net (8.9.0/8.9.0) id BAA24706 for linac-eng-list; Wed, 31 Mar 2004 01:58:12 -0600 (CST) Received: from mail23.nhs.uk (mail23.nhs.uk [62.6.139.221]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id BAA24696 for ; Wed, 31 Mar 2004 01:58:06 -0600 (CST) Received: from [10.191.254.3] (helo=relayint2.nhs.uk) by mail23.nhs.uk with esmtp (MTC MTA) id 1B8abP-00067z-Vo for linac-eng@plato.aristotle.net; Wed, 31 Mar 2004 08:57:35 +0100 Received: from relay.nhs.uk (194.62.42.141) by relayint2.nhs.uk (Syntegra-I2 7.0.008) id 4039DF71009D7FD6 for linac-eng@plato.aristotle.net; Wed, 31 Mar 2004 08:57:35 +0100 Received: from ubht.swest.nhs.uk (194.101.53.2) by relay.nhs.uk (Syntegra-1 7.0.008) id 4069A5730001A7B0 for linac-eng@plato.aristotle.net; Wed, 31 Mar 2004 08:57:35 +0100 Received: by ubhtfw1.ubht.swest.nhs.uk id <119044>; Wed, 31 Mar 2004 08:36:34 +0100 Date: Wed, 31 Mar 2004 08:57:19 +0100 From: "Cooper, Malcolm" Subject: Elekta PSU [Scanned By SOPHOS Anti-Virus] Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <04Mar31.083634bst.119044@ubhtfw1.ubht.swest.nhs.uk> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 7bit Importance: normal Precedence: bulk thread-index: AcQXAqnrl2eHFeWTTte/ZXUiFvKrAw== Content-Class: urn:content-classes:message X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4927.1200 X-OriginalArrivalTime: 31 Mar 2004 09:29:28.0078 (UTC) FILETIME=[A9E272E0:01C41702] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 31 Mar 2004 08:57:19 +0100 From: "Cooper, Malcolm" Subject: Elekta PSU [Scanned By SOPHOS Anti-Virus] Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Importance: normal thread-index: AcQXAqnrl2eHFeWTTte/ZXUiFvKrAw== Content-Class: urn:content-classes:message X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4927.1200 X-OriginalArrivalTime: 31 Mar 2004 09:29:28.0078 (UTC) FILETIME=[A9E272E0:01C41702] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hi there, I would change both the PSU's in the relevent control area. The system may not be reporting the low voltage as it could be dropping out for a short time and the delay in the sampling could miss it. This is a description of how the parts and items are used to show the PSU voltages. I got the information from Elekta. The voltage monitor/positional reference items continually monitor the voltages within the six control areas. When a problem occurs with the voltage in one of these areas the part 104 and 105 (104 =rtu 105=channel) are supposed to be frozen to indicate which RTU and channel is faulty. However, due to the queue system the part 104 and 105 can sometimes indicate the wrong value. There follows a brief description of how the items determine which RTU and Channel to look at and, perhaps, a more reliable way of determining which is at fault. Taking +15v sys i281 as an example: When part 130 is set to 19, the item looks at the process parameters, parts 131,132,133,134,135,136.in turn. A computation is then carried out on the values within these parts to determine which RTU and Channel is examined for information thus: P130=19 p131=15393 p132=7201 p133=31777 p134=23585 p135=17375 p136=2556 Taking pt131 = 15393 15393 convert to hex = 3C21 3C21 convert to BCD 0011 1100 0010 0001 Discard bit 11 0011 1 00 0010 0001 Remaining groups are split up 001|1 1 00 001|0 0001 These groups are converted to base 10 1 97 not used Thus the system will access channel 97 (15vsys) 15393 = 3C21 = RTU 1 (ICCA B) Similarly: 7201 = 1C21 = RTU 0 Ch. 97 31777 = 7C21 = RTU 3 Ch.97 23585 = 5C21 = RTU 2 Ch. 97 -17375 = BC21 = RTU 5 Ch. 97 -25567 = 9C21 = RTU 4 Ch. 97 The same theory can be applied to all of the other monitor items ie i280 will access Ch. 96 (-15v sys ) of all six RTU's. If a faulty voltage is detected the value of the appropriate process parameter (p130's) being processed at the time is held in part 153. Applying the above calculation to this number will give the faulty RTU NB if the +/- 15v and +5 v monitors point towards a particular RTU then the faulty PSU is on the opposite side. RTU1 is ICCA/B but the faulty PSU would be in ICCA/A. I hope it makes sense! Malcolm Cooper (Bristol UK)  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HVF002KBV1CSA@hubbard.azu.nl>; Wed, 31 Mar 2004 13:39:18 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004033113391627398 ; Wed, 31 Mar 2004 13:39:16 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id NAA20611; Wed, 31 Mar 2004 13:41:18 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma020086; Wed, 31 Mar 2004 13:39:46 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id DAA27878 for linac-eng-list; Wed, 31 Mar 2004 03:49:09 -0600 (CST) Received: from mail21.nhs.uk (mail21.nhs.uk [62.6.139.215]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id DAA27872 for ; Wed, 31 Mar 2004 03:48:52 -0600 (CST) Received: from [10.191.254.3] (helo=relayint1.nhs.uk) by mail21.nhs.uk with esmtp (MTC MTA) id 1B8cKb-0001nr-9d for linac-eng@plato.aristotle.net; 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Wed, 31 Mar 2004 01:36:21 -0600 (CST) Received: from mail21.nhs.uk (mail21.nhs.uk [62.6.139.215]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id BAA24116 for ; Wed, 31 Mar 2004 01:36:17 -0600 (CST) Received: from [10.191.254.3] (helo=relayint2.nhs.uk) by mail21.nhs.uk with esmtp (MTC MTA) id 1B8aGI-0004IK-Fw for linac-eng@plato.aristotle.net; Wed, 31 Mar 2004 08:35:46 +0100 Received: from relay.nhs.uk (194.62.42.141) by relayint2.nhs.uk (Syntegra-I2 7.0.008) id 4039DF71009D5D69 for linac-eng@plato.aristotle.net; Wed, 31 Mar 2004 08:35:46 +0100 Received: from ubht.swest.nhs.uk (194.101.53.2) by relay.nhs.uk (Syntegra-1 7.0.008) id 4069A57300016C66 for linac-eng@plato.aristotle.net; Wed, 31 Mar 2004 08:35:46 +0100 Received: by ubhtfw1.ubht.swest.nhs.uk id <119044>; Wed, 31 Mar 2004 08:14:50 +0100 Date: Wed, 31 Mar 2004 08:35:35 +0100 From: "Cooper, Malcolm" Subject: Recall: re voltage monitor [Scanned By SOPHOS Anti-Virus] Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <04Mar31.081450bst.119044@ubhtfw1.ubht.swest.nhs.uk> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 7bit Expiry-date: Fri, 02 Apr 2004 08:31:48 +0100 Importance: normal Precedence: bulk thread-index: AcQW/uag4UPU/ky8Q6aXEhsq4etg0Q== Content-Class: urn:content-classes:message X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4927.1200 X-OriginalArrivalTime: 31 Mar 2004 09:02:31.0937 (UTC) FILETIME=[E696E710:01C416FE] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 31 Mar 2004 08:35:35 +0100 From: "Cooper, Malcolm" Subject: Recall: re voltage monitor [Scanned By SOPHOS Anti-Virus] Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Expiry-date: Fri, 02 Apr 2004 08:31:48 +0100 Importance: normal thread-index: AcQW/uag4UPU/ky8Q6aXEhsq4etg0Q== Content-Class: urn:content-classes:message X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4927.1200 X-OriginalArrivalTime: 31 Mar 2004 09:02:31.0937 (UTC) FILETIME=[E696E710:01C416FE] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Cooper, Malcolm would like to recall the message, "re voltage monitor".  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HVF0033SV7UVS@hubbard.azu.nl>; 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Wed, 31 Mar 2004 01:25:19 -0600 (CST) Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id JAA29415 for ; Wed, 31 Mar 2004 09:26:48 +0200 (MET DST) Received: from hubbard.azu.nl(143.121.16.9) by armstrong.azu.nl via smap (V1.3) id xma029108; Wed, 31 Mar 2004 09:25:41 +0200 Received: from ketel1.azu.nl by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with ESMTP id <0HVF00108J79R0@hubbard.azu.nl> for linac-eng@plato.aristotle.net; Wed, 31 Mar 2004 09:23:38 +0200 (MET DST) Received: from triangel.azu.nl ([143.121.145.24] ident=mail) by ketel1.azu.nl with esmtp (Exim 3.35 #1 (Debian)) id 1B8a5Y-0006jo-00; Wed, 31 Mar 2004 09:24:40 +0200 Received: from kok by triangel.azu.nl with local (Exim 3.35 #1 (Debian)) id 1B8a5X-0005SA-00; Wed, 31 Mar 2004 09:24:39 +0200 Date: Wed, 31 Mar 2004 09:24:39 +0200 From: Jan Kok Subject: Electa linac power supplies. [Scanned By SOPHOS Anti-Virus] Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 Content-type: TEXT/PLAIN; charset=US-ASCII Content-transfer-encoding: 7bit Importance: normal Precedence: bulk thread-index: AcQW/abZVfPz15VlR+iJJNQh8NHfPA== Content-Class: urn:content-classes:message X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4927.1200 X-OriginalArrivalTime: 31 Mar 2004 08:53:35.0421 (UTC) FILETIME=[A6CD0ED0:01C416FD] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 31 Mar 2004 09:24:39 +0200 From: Jan Kok Subject: Electa linac power supplies. [Scanned By SOPHOS Anti-Virus] Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Importance: normal thread-index: AcQW/abZVfPz15VlR+iJJNQh8NHfPA== Content-Class: urn:content-classes:message X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4927.1200 X-OriginalArrivalTime: 31 Mar 2004 08:53:35.0421 (UTC) FILETIME=[A6CD0ED0:01C416FD] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hello Alex, In a control area the supplies of both power units are checked. Remember that side A checks the supply of side B and visa versa. So if Area 16 side B reads a bad 15V, check the power unit at side A. Best thing to do is replacing the PS (check the Internet for a local reseller) or swap one with a PS from the ICCA (if gantry rotation is inducing the inhibit.) regards Jan  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HVF005FLWFTJ9@hubbard.azu.nl>; Wed, 31 Mar 2004 14:09:35 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004033114092828212 ; Wed, 31 Mar 2004 14:09:28 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id OAA00045; Wed, 31 Mar 2004 14:11:30 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma029626; Wed, 31 Mar 2004 14:10:20 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id EAA28663 for linac-eng-list; Wed, 31 Mar 2004 04:20:32 -0600 (CST) Received: from mail22.nhs.uk (mail22.nhs.uk [62.6.139.218]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id EAA28659 for ; Wed, 31 Mar 2004 04:20:26 -0600 (CST) Received: from [10.191.254.3] (helo=relayint2.nhs.uk) by mail22.nhs.uk with esmtp (MTC MTA) id 1B8cp9-0000Js-LP for linac-eng@plato.aristotle.net; Wed, 31 Mar 2004 11:19:55 +0100 Received: from relay.nhs.uk (194.62.42.142) by relayint2.nhs.uk (Syntegra-I2 7.0.008) id 4039DF71009ECB2E for linac-eng@plato.aristotle.net; Wed, 31 Mar 2004 11:19:55 +0100 Received: from smtp.leedsth.nhs.uk (163.160.107.2) by relay.nhs.uk (Syntegra-2 7.0.008) (authenticated as smtp_leedsth_nhs_uk@es2002.nhs.uk) id 406A847600012CC1 for linac-eng@plato.aristotle.net; Wed, 31 Mar 2004 11:19:55 +0100 Received: from LTH-MTA by smtp.leedsth.nhs.uk with Novell_GroupWise; Wed, 31 Mar 2004 11:00:53 +0100 Date: Wed, 31 Mar 2004 10:24:53 +0100 From: Chris Forrest Subject: Re: Electa linac power supplies. Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net, Alex.Rozenblat@sw.ca Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.0.2 Content-type: text/plain; charset=US-ASCII Content-disposition: inline Content-transfer-encoding: 8bit Precedence: bulk X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id EAA28660 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 31 Mar 2004 10:24:53 +0100 From: Chris Forrest Subject: Re: Electa linac power supplies. Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net, Alex.Rozenblat@sw.ca Content-disposition: inline X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id EAA28660 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Alex, We have experienced the problem on nearly all of our SL linacs. Our experience has shown that it is usually due to the default limit values being set too near to the running values. If you check the linac logfiles this should confirm this. I would assume that is why you were advised to reset the limits. I agree with Jan and Ole regarding HITRON power supply intermittent failures - we have experienced this many times over the years however the symptoms are usually that the linac drops back to "system on" with a "Facility 1 state" reported. When you check the suspends they point to the problem side of the control area. If you are really lucky you can run to that control area and see all the LEDs are out on one side before the SMPS re-starts! Good luck. Chris Chris Forrest Technical Specialist Radiotherapy Technology Services Department of Medical Physics & Engineering Leeds Teaching Hospitals NHS Trust Cookridge Hospital Hospital Lane Leeds LS16 6QB UK Tel. +44 113 3924354 Fax. +44 113 3924122 >>> "Rozenblat, Alex" 30/03/2004 19:13:18 >>> Hello, fellows I would like to understand what PCBs are involved into converting a real physical voltage from Hitron Power Supply (PS) into Items 280 ( -15V) and 281 (+15V) which we see on monitor. Basically, I need a functional drawing showing this path. The reason is: I am having an intermittent terminations on Item 281 (+15V voltage lower than the low limit). I can see through cycling Item 281 on monitor that the lowest readback is 14.84V which should be above the limit anyway. When Termination occurs the Debug captures the address which leads me to Area 16 side B (as per Electa procedure). But when I measured physically voltage on this side it's +14.95V - what else does one need for complete happiness? So, I can not blame the PS. Or may be I should? I was told that only two PCBs are involved into processing of physical voltage into Item - those are SCC and AI12. I changed them both in the "faulty" area and I can see on screen that the lowest voltage (14.84) is still here (I don't know though if the lowest voltage is from the "faulty" area) and termination on 281 still happens (very occasionally). Of course I can change the limit for the Item (like I was advised) or can change PS which I am sure is fine but I'd like to see if I am missing something. Unfortunately, I can not find any related schematic in my collection. Plus, if it was a certain PCB which is a culprit the functional schematic would help me to fix it since I would know Input/Output for the signals. Thank you, Alex Rozenblat TSRCC, Toronto  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HVG00FQPB2Y2Z@hubbard.azu.nl>; Wed, 31 Mar 2004 19:25:47 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004033119254502394 ; Wed, 31 Mar 2004 19:25:45 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA23633; Wed, 31 Mar 2004 19:27:47 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma023587; Wed, 31 Mar 2004 19:27:26 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id JAA06629 for linac-eng-list; Wed, 31 Mar 2004 09:23:48 -0600 (CST) Received: from webshield2.swchsc.on.ca ([142.76.1.63]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id JAA06625 for ; Wed, 31 Mar 2004 09:23:36 -0600 (CST) Received: from unknown(142.76.240.40) by webshield2.swchsc.on.ca via csmap id a3394998_82fd_11d8_9695_0002b3c25eda_13368; Wed, 31 Mar 2004 10:24:49 +0000 (UTC) Received: by bajor.tsrcc.on.ca with Internet Mail Service (5.5.2653.19) id ; Wed, 31 Mar 2004 10:23:05 -0500 Date: Wed, 31 Mar 2004 10:23:03 -0500 From: "Rozenblat, Alex" Subject: About Electa PS again. Sender: owner-linac-eng@plato.aristotle.net To: "'linac-eng@plato.aristotle.net'" Message-id: <4631AA4F502ED711AE0700A0C9EBCF2964F6D2@bajor.tsrcc.on.ca> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_P+HlE/GlUSgpPsLeBjF/jw)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 31 Mar 2004 10:23:03 -0500 From: "Rozenblat, Alex" Subject: About Electa PS again. Sender: owner-linac-eng@plato.aristotle.net To: "'linac-eng@plato.aristotle.net'" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_P+HlE/GlUSgpPsLeBjF/jw) Content-type: text/plain; charset=iso-8859-1 Thank you, everyone for advice. Consensus was to replace PSs in this suspected area what I will definitely do in the nearest future. But... Your replies showed me that I should be more specific next time. Like this, for example: 1. I know Electa procedure how to determine a faulty PS in Control Areas (though somebody suggested that there could be a delay in System sampling which can result in wrong PS being reported by the system as faulty???). 2. I know that MTU of A-side of every CA monitors functioning of B-side of the same area and vice versa. 3. I know that there are 2 PCBs (SCC and AI12) involved in processing of physical voltage +/-15V into value of Items (280 and 281). 4. I know how to observe these 280 and 281 Items while their values are cycled through all 6 PSs. 5. Using voltmeter I measured voltage of every single PS both + and - 15V in all 3 CAs, they all are within +/- 0.2V from nominal value. Questions: 1. Physical voltage in RHCA on B-side is -15.04. Computer informs me that it's -14.28. I changed (twice!) both SCC and AI12 in this area and result is : computer says it's -14.30, no change from previous! Why does computer "lie" to me? What else is involved into processing a physical voltage into Item (besides SCC and AI12 PCBs)? Same goes for Area 16 but for +15V. 2. Does anyone have a drawing that shows a path from PS +/- 15V to Computer Item, like regular Philips/Electa schematics always do? Thank you, sleepless European friends (majority of replies came from Europe). ;-) Alex Rozenblat Toronto, Canada --Boundary_(ID_P+HlE/GlUSgpPsLeBjF/jw) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: quoted-printable About Electa PS again.

Thank you, everyone for advice.

Consensus was to replace PSs in this = suspected area what I will definitely do in the nearest future. = But...

Your replies showed me that I should = be more specific next time. Like this, for example:

1. I know Electa procedure how to = determine a faulty PS in Control Areas (though somebody suggested that = there could be a delay in System sampling which can result in wrong PS = being reported by the system as faulty???).

2. I know that MTU of A-side of every = CA monitors functioning of B-side of the same area and vice = versa.

3. I know that there are 2 PCBs (SCC = and AI12) involved in processing of physical voltage +/-15V into value = of Items (280 and 281).

4. I know how to observe these 280 and = 281 Items while their values are cycled through all 6 PSs.

5. Using voltmeter I measured voltage = of every single PS both + and - 15V in all 3 CAs, they all are within = +/- 0.2V from nominal value.

Questions:
1. Physical voltage in RHCA on B-side = is -15.04. Computer informs me that it's -14.28. I changed (twice!) = both SCC and AI12 in this area and result is : computer says it's = -14.30, no change from previous! Why does computer "lie" to = me? What else is involved into processing a physical voltage into Item = (besides SCC and AI12 PCBs)? Same goes for Area 16 but for = +15V.

2. Does anyone have a drawing that = shows a path from PS +/- 15V to Computer Item, like regular = Philips/Electa schematics always do?

Thank you, sleepless European friends = (majority of replies came from Europe).
;-)

Alex Rozenblat
Toronto, Canada

--Boundary_(ID_P+HlE/GlUSgpPsLeBjF/jw)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HVG00BS6ONW4T@hubbard.azu.nl>; Thu, 1 Apr 2004 00:19:09 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004040100190706907 ; Thu, 01 Apr 2004 00:19:07 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id AAA16908; Thu, 01 Apr 2004 00:21:09 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma016844; Thu, 01 Apr 2004 00:20:35 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id MAA11084 for linac-eng-list; Wed, 31 Mar 2004 12:17:15 -0600 (CST) Received: from crux-nb01s0.health.nb.ca (well.health.nb.ca [207.179.181.34]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id MAA11080 for ; Wed, 31 Mar 2004 12:16:59 -0600 (CST) Received: from SJRH-AS-N03.NBHEALTH ([10.21.4.10]) by crux-nb01s0.health.nb.ca (Post.Office MTA v3.5.3 release 223 ID# 607-58282U90000L90000S0V35) with ESMTP id ca for ; Wed, 31 Mar 2004 14:15:46 -0400 Received: from AHSC_DOMR-MTA by SJRH-AS-N03.NBHEALTH with Novell_GroupWise; Wed, 31 Mar 2004 14:16:28 -0400 Date: Wed, 31 Mar 2004 14:16:14 -0400 From: Marvin Rathburn Subject: Morning output checks Sender: owner-linac-eng@plato.aristotle.net To: Linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.5.2 Beta Content-type: text/plain; charset=US-ASCII Content-disposition: inline Content-transfer-encoding: 7bit Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 31 Mar 2004 14:16:14 -0400 From: Marvin Rathburn Subject: Morning output checks Sender: owner-linac-eng@plato.aristotle.net To: Linac-eng@plato.aristotle.net Content-disposition: inline X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Good day to all on the list We use a model 1091 checkmate for output checks during morning QA here at the clinic. We have had one fail on us and so I am asking if this is what is commonly use for this purpose or is there another product out there that I could checkout? Regards Marvin Rathburn  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HVG00M26W3RW3@hubbard.azu.nl>; Thu, 1 Apr 2004 02:59:58 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004040102595608406 ; Thu, 01 Apr 2004 02:59:56 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id DAA09091; Thu, 01 Apr 2004 03:01:58 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma009039; Thu, 01 Apr 2004 03:01:35 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id RAA08663 for linac-eng-list; Wed, 31 Mar 2004 17:13:08 -0600 (CST) Received: from smtp812.mail.sc5.yahoo.com (smtp812.mail.sc5.yahoo.com [66.163.170.82]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id RAA08657 for ; Wed, 31 Mar 2004 17:13:07 -0600 (CST) Received: from unknown (HELO DGrecoHomOffice) (dgreco@pacbell.net@216.103.85.50 with login) by smtp812.mail.sc5.yahoo.com with SMTP; Wed, 31 Mar 2004 23:13:12 +0000 Date: Wed, 31 Mar 2004 15:13:11 -0800 From: Domenic Greco Subject: RE: Varian Digital gun EEPROM error In-reply-to: <59A37C5E01DB0949A6D0324C2C13EACB047BD3@zws10.zwv.nl> Sender: owner-linac-eng@plato.aristotle.net To: CJ.de.Bruijne@walcheren.ziekenhuis.nl, linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2910.0) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_yN6TLjORAE5o4QxVBlvEaQ)" Importance: Normal Precedence: bulk X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 (Normal) *** EOOH *** Date: Wed, 31 Mar 2004 15:13:11 -0800 From: Domenic Greco Subject: RE: Varian Digital gun EEPROM error In-reply-to: <59A37C5E01DB0949A6D0324C2C13EACB047BD3@zws10.zwv.nl> Sender: owner-linac-eng@plato.aristotle.net To: CJ.de.Bruijne@walcheren.ziekenhuis.nl, linac-eng@plato.aristotle.net Importance: Normal X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 (Normal) This is a multi-part message in MIME format. --Boundary_(ID_yN6TLjORAE5o4QxVBlvEaQ) Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7bit Varian Digital gun EEPROM errorBrave Engineer, Your problem with the digital gun deck is not a problem if the interlock generated is a flashing GFIL when switching the motor pot on. It is a design feature provided at no additional cost.We simply override the interlock when we want to tune the machine with the motor pot on. Domenic Greco -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of CJ.de.Bruijne@walcheren.ziekenhuis.nl Sent: Tuesday, March 30, 2004 10:45 PM To: linac-eng@plato.aristotle.net Subject: Varian Digital gun EEPROM error Hi brave engineers, We do have a problem with a Varian digital gun. As soon as we (in servicemode) switch to 'motorpot on' a GFIL interlock occures. Opening gundeck shows us a flashing controller display with a EEPROM error message. This message disapears when returning to normal mode. What are we goin-to-do with this? Regards Keesjan de Bruijne Biomedical Engineer Ziekenhuis Walcheren Vlissingen, the Netherlands dep. DIA cj.de.bruijne@walcheren.ziekenhuis.nl --Boundary_(ID_yN6TLjORAE5o4QxVBlvEaQ) Content-type: text/html; charset=US-ASCII Content-transfer-encoding: quoted-printable Varian Digital gun EEPROM error
Brave=20 Engineer,
 
Your=20 problem with the digital gun deck is not a problem if the interlock = generated is=20 a flashing GFIL when switching the motor pot on. It is a design = feature=20 provided at no additional cost.We simply override the interlock when we = want=20 to tune the machine with the motor pot on.
 
Domenic Greco
-----Original Message-----
From:=20 owner-linac-eng@plato.aristotle.net=20 [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of=20 CJ.de.Bruijne@walcheren.ziekenhuis.nl
Sent: Tuesday, = March 30,=20 2004 10:45 PM
To: = linac-eng@plato.aristotle.net
Subject:=20 Varian Digital gun EEPROM error

Hi = brave =20 engineers,

We do have a = problem with a=20 Varian digital gun.
As soon as we (in servicemode) switch to 'motorpot on' a GFIL = interlock=20 occures.
Opening=20 gundeck shows us a flashing controller display with a EEPROM error=20 message.
This=20 message disapears when returning to normal mode.

What are we = goin-to-do with=20 this?

Regards
Keesjan de Bruijne
Biomedical Engineer
Ziekenhuis=20 Walcheren
Vlissingen, the=20 Netherlands
dep. DIA =
cj.de.bruijne@walcheren.ziekenhuis.nl=20





--Boundary_(ID_yN6TLjORAE5o4QxVBlvEaQ)--  1,, X-Coding-System: undecided-unix Return-path: Disposition-notification-to: CJ.de.Bruijne@walcheren.ziekenhuis.nl Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HVH00MSCK2HCQ@hubbard.azu.nl>; Thu, 1 Apr 2004 11:37:57 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004040111375417042 ; Thu, 01 Apr 2004 11:37:54 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id LAA28720; Thu, 01 Apr 2004 11:39:56 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma028038; Thu, 01 Apr 2004 11:37:53 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id BAA13615 for linac-eng-list; Thu, 01 Apr 2004 01:56:16 -0600 (CST) Received: from zws10.zwv.nl ([212.115.200.190]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id BAA13611 for ; Thu, 01 Apr 2004 01:56:15 -0600 (CST) Date: Thu, 01 Apr 2004 09:54:48 +0200 From: CJ.de.Bruijne@walcheren.ziekenhuis.nl Subject: RE: Varian Digital gun EEPROM error Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <59A37C5E01DB0949A6D0324C2C13EACB047BE0@zws10.zwv.nl> MIME-version: 1.0 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_MMnrWnBMhPIbsX6b/UqRWQ)" Precedence: bulk X-MimeOLE: Produced By Microsoft Exchange V6.0.6487.1 content-class: urn:content-classes:message Thread-Topic: Varian Digital gun EEPROM error Thread-Index: AcQXdYuoHgjQql8nTgyUjWT18/K64gARzH2w X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Disposition-notification-to: CJ.de.Bruijne@walcheren.ziekenhuis.nl Date: Thu, 01 Apr 2004 09:54:48 +0200 From: CJ.de.Bruijne@walcheren.ziekenhuis.nl Subject: RE: Varian Digital gun EEPROM error Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-MimeOLE: Produced By Microsoft Exchange V6.0.6487.1 content-class: urn:content-classes:message Thread-Topic: Varian Digital gun EEPROM error Thread-Index: AcQXdYuoHgjQql8nTgyUjWT18/K64gARzH2w X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This is a multi-part message in MIME format. --Boundary_(ID_MMnrWnBMhPIbsX6b/UqRWQ) Content-type: text/plain; charset=us-ascii Content-transfer-encoding: quoted-printable Hi Folks, As Dominic, many of you are thinking we don't have a real problem. We know however how to overrule the interlock. This time we don't have flashing GFIL but a solid one.=20 Thanks anyhow for your sugestions. Keesjan > -----Original Message----- > From: Domenic Greco [SMTP:dgreco@pacbell.net] > Sent: Thursday, April 01, 2004 1:13 AM > To: Bruijne, Keesjan de; linac-eng@plato.aristotle.net > Subject: RE: Varian Digital gun EEPROM error >=20 > Brave Engineer, > =20 > Your problem with the digital gun deck is not a problem if the = interlock generated is a flashing GFIL when switching the motor pot on. = It is a design feature provided at no additional cost.We simply override = the interlock when we want to tune the machine with the motor pot on. > =20 > Domenic Greco >=20 > -----Original Message----- > From: owner-linac-eng@plato.aristotle.net = [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of = CJ.de.Bruijne@walcheren.ziekenhuis.nl > Sent: Tuesday, March 30, 2004 10:45 PM > To: linac-eng@plato.aristotle.net > Subject: Varian Digital gun EEPROM error > =09 > =09 >=20 > Hi brave engineers,=20 >=20 > We do have a problem with a Varian digital gun.=20 > As soon as we (in servicemode) switch to 'motorpot on' a GFIL = interlock occures.=20 > Opening gundeck shows us a flashing controller display with a EEPROM = error message.=20 > This message disapears when returning to normal mode.=20 >=20 > What are we goin-to-do with this?=20 >=20 > Regards=20 > Keesjan de Bruijne=20 > Biomedical Engineer=20 > Ziekenhuis Walcheren=20 > Vlissingen, the Netherlands=20 > dep. DIA=20 > cj.de.bruijne@walcheren.ziekenhuis.nl=20 >=20 >=20 >=20 >=20 >=20 --Boundary_(ID_MMnrWnBMhPIbsX6b/UqRWQ) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: quoted-printable RE: Varian Digital gun EEPROM error

Hi Folks,

As Dominic, many of you are thinking we don't = have a real problem.

We know however how to overrule the = interlock.

This time we don't have  flashing GFIL but a solid = one.

Thanks anyhow for your = sugestions.

Keesjan

    -----Original Message-----

    From:   Domenic Greco [SMTP:dgreco@pacbell.net]

    Sent:   Thursday, April 01, 2004 1:13 AM

    To:     Bruijne, Keesjan de; = linac-eng@plato.aristotle.net

    Subject:       <= /B> RE: Varian Digital gun EEPROM = error

    Brave Engineer,

    =A0

    Your problem with the digital gun deck is not a problem = if the interlock generated is a flashing GFIL when switching the motor = pot on. It is a design feature provided at no additional cost.We simply = override the interlock when we want to=A0tune the machine=A0with the = motor pot on.

    =A0

    Domenic Greco

      -----Original Message-----
      From: = owner-linac-eng@plato.aristotle.net [mailto:owner-linac-en= g@plato.aristotle.net]On = Behalf Of CJ.de.Bruijne@walcheren.ziekenhuis.nl
      Sent: Tuesday, March 30, 2004 10:45 PM
      To: linac-eng@plato.aristotle.net
      Subject: Varian Digital gun EEPROM error

      Hi brave=A0 engineers,

      We do have a problem with a Varian digital = gun.
      As soon = as we (in servicemode) switch to 'motorpot on' a GFIL interlock = occures.
      Opening = gundeck shows us a flashing controller display with a EEPROM error = message.
      This = message disapears when returning to normal mode.

      What are we goin-to-do with this?

      Regards
      Keesjan de Bruijne
      Biomedical Engineer
      Ziekenhuis Walcheren
      Vlissingen, the = Netherlands
      dep. DIA
      cj.de.bruijne@walcheren.ziekenhuis.nl





--Boundary_(ID_MMnrWnBMhPIbsX6b/UqRWQ)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HVH000Q7KU2YZ@hubbard.azu.nl>; Thu, 1 Apr 2004 11:54:26 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004040111541817507 ; Thu, 01 Apr 2004 11:54:18 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id LAA04186; Thu, 01 Apr 2004 11:56:20 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma003631; Thu, 01 Apr 2004 11:54:36 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id CAA13859 for linac-eng-list; Thu, 01 Apr 2004 02:27:08 -0600 (CST) Received: from mail21.nhs.uk (mail21.nhs.uk [62.6.139.215]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id CAA13855 for ; Thu, 01 Apr 2004 02:27:06 -0600 (CST) Received: from [10.191.254.3] (helo=relayint2.nhs.uk) by mail21.nhs.uk with esmtp (MTC MTA) id 1B8xX1-0006Nk-Ja for Linac-eng@plato.aristotle.net; Thu, 01 Apr 2004 09:26:35 +0100 Received: from relay.nhs.uk (194.62.42.142) by relayint2.nhs.uk (Syntegra-I2 7.0.008) id 4039DF7100A3525A for Linac-eng@plato.aristotle.net; Thu, 01 Apr 2004 09:26:35 +0100 Received: from mercury.University-b.wmids.nhs.uk (193.240.116.176) by relay.nhs.uk (Syntegra-2 7.0.008) (authenticated as smtp_uhb_nhs_uk@es2002.nhs.uk) id 406A84760008F7E5; Thu, 01 Apr 2004 09:26:35 +0100 Received: by MERCURY with Internet Mail Service (5.5.2653.19) id ; Thu, 01 Apr 2004 09:26:34 +0100 Date: Thu, 01 Apr 2004 09:23:53 +0100 From: Graham Chalmers Subject: RE: Morning output checks Sender: owner-linac-eng@plato.aristotle.net To: 'Marvin Rathburn' , Linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_dRN17lFHXE+TEcictZ/5kQ)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 01 Apr 2004 09:23:53 +0100 From: Graham Chalmers Subject: RE: Morning output checks Sender: owner-linac-eng@plato.aristotle.net To: 'Marvin Rathburn' , Linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_dRN17lFHXE+TEcictZ/5kQ) Content-type: text/plain; CHARSET=US-ASCII We use thermoelectron (Formally NE technology) dosecheckers or radiographer routine constancy measurements daily on our 6 LAs - they have proved reasonably reliable provided the batteries are charged With best wishes Graham Chalmers Graham Chalmers Radiotherapy Physics University Hospital Birmingham NHS Trust Birmingham B15 2TH 0121-627-2266 DISCLAIMER: This e-mail contains proprietary information some or all of which may be confidential or legally privileged. It is for the exclusive use of the intended recipient(s) only. If an addressing or transmission error has misdirected this e-mail and you are not the intended recipient(s), please notify the author by replying to this e-mail. If you are not the intended recipient you must not use, disclose, distribute, copy, print, or rely on this e-mail, as this may be unlawful.-----Original Message----- From: Marvin Rathburn [mailto:RATMA@reg2.health.nb.ca] Sent: 31 March 2004 19:16 To: Linac-eng@plato.aristotle.net Subject: Morning output checks Good day to all on the list We use a model 1091 checkmate for output checks during morning QA here at the clinic. We have had one fail on us and so I am asking if this is what is commonly use for this purpose or is there another product out there that I could checkout? Regards Marvin Rathburn DISCLAIMER: This e-mail contains proprietary information some or all of which may be confidential or legally privileged. It is for the exclusive use of the intended recipient(s) only. If an addressing or transmission error has misdirected this e-mail and you are not the intended recipient(s), please notify the author by replying to this e-mail. If you are not the intended recipient you must not use, disclose, distribute, copy, print, or rely on this e-mail, as this may be unlawful. --Boundary_(ID_dRN17lFHXE+TEcictZ/5kQ) Content-type: text/html Content-transfer-encoding: quoted-printable RE: Morning output checks

We use thermoelectron (Formally NE technology) = dosecheckers or radiographer routine constancy measurements daily on = our 6 LAs - they have proved reasonably reliable provided the batteries = are charged

With best wishes
 
Graham Chalmers
 
 

Graham Chalmers

Radiotherapy Physics

University Hospital Birmingham NHS Trust

Birmingham B15 2TH

0121-627-2266

 
 
 
 
DISCLAIMER: This e-mail contains proprietary = information some or all of which may be confidential or legally = privileged. It is for the exclusive use of the intended recipient(s) = only. If an addressing or transmission error has misdirected this = e-mail and you are not the intended recipient(s), please notify the = author by replying to this e-mail. If you are not the intended = recipient you must not use, disclose, distribute, copy, print, or rely = on this e-mail, as this may be unlawful.-----Original = Message-----

From: Marvin Rathburn [mailto:RATMA@reg2.health.nb.ca]
Sent: 31 March 2004 19:16
To: Linac-eng@plato.aristotle.net
Subject: Morning output checks

   Good day to all on the list
          &nb= sp;     We use a model 1091 checkmate for output = checks during
morning QA here at the clinic. We have had one fail = on us and so I am
asking if this is what is commonly use for this = purpose or is there
another product out there that I could = checkout?

     Regards
          &nb= sp;  Marvin Rathburn
DISCLAIMER: This e-mail contains proprietary = information some or all of which may be confidential or legally = privileged. It is for the exclusive use of the intended recipient(s) = only. If an addressing or transmission error has misdirected this = e-mail and you are not the intended recipient(s), please notify the = author by replying to this e-mail. If you are not the intended = recipient you must not use, disclose, distribute, copy, print, or rely = on this e-mail, as this may be unlawful.

--Boundary_(ID_dRN17lFHXE+TEcictZ/5kQ)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HVH004KXWG208@hubbard.azu.nl>; Thu, 1 Apr 2004 16:05:28 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004040116051923942 ; Thu, 01 Apr 2004 16:05:19 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id QAA20984; Thu, 01 Apr 2004 16:07:20 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma020318; Thu, 01 Apr 2004 16:05:38 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id GAA18036 for linac-eng-list; Thu, 01 Apr 2004 06:19:00 -0600 (CST) Received: from crux-nb01s0.health.nb.ca (well.health.nb.ca [207.179.181.34]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id GAA18032 for ; Thu, 01 Apr 2004 06:18:58 -0600 (CST) Received: from SJRH-AS-N03.NBHEALTH ([10.21.4.10]) by crux-nb01s0.health.nb.ca (Post.Office MTA v3.5.3 release 223 ID# 607-58282U90000L90000S0V35) with ESMTP id ca for ; Thu, 01 Apr 2004 08:17:44 -0400 Received: from AHSC_DOMR-MTA by SJRH-AS-N03.NBHEALTH with Novell_GroupWise; Thu, 01 Apr 2004 08:18:27 -0400 Date: Thu, 01 Apr 2004 08:17:57 -0400 From: Marvin Rathburn Subject: Thanks to all Sender: owner-linac-eng@plato.aristotle.net To: Linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.5.2 Beta Content-type: text/plain; charset=US-ASCII Content-disposition: inline Content-transfer-encoding: 7bit Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 01 Apr 2004 08:17:57 -0400 From: Marvin Rathburn Subject: Thanks to all Sender: owner-linac-eng@plato.aristotle.net To: Linac-eng@plato.aristotle.net Content-disposition: inline X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Thanks to all who replied to my question on the checkmate. I now have some other products to look into. Best Regards Marvin Rathburn  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HVI00GAFRMIBA@hubbard.azu.nl>; Fri, 2 Apr 2004 03:18:20 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004040203181601681 ; Fri, 02 Apr 2004 03:18:16 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id DAA02532; Fri, 02 Apr 2004 03:20:18 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma002443; Fri, 02 Apr 2004 03:19:51 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id RAA08189 for linac-eng-list; Thu, 01 Apr 2004 17:16:34 -0600 (CST) Received: from titan.lhsc.on.ca (titan.lhsc.on.ca [142.158.2.20]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id RAA08185 for ; Thu, 01 Apr 2004 17:16:29 -0600 (CST) Received: from mail.lrcc.on.ca (mail.lrcc.on.ca [142.158.120.242]) by titan.lhsc.on.ca (8.11.7p1+Sun/8.11.7) with SMTP id i31NFgW03183; Thu, 01 Apr 2004 18:15:50 -0500 (EST) Received: by mail.lrcc.on.ca(Lotus SMTP MTA v4.6.7 (934.1 12-30-1999)) id 85256E69.007FBAEB ; Thu, 01 Apr 2004 18:15:09 -0500 Date: Thu, 01 Apr 2004 18:15:08 -0500 From: Randy.McVittie@lrcc.on.ca Subject: Re: Low dose rate [Scanned By SOPHOS Anti-Virus] Sender: owner-linac-eng@plato.aristotle.net To: faichichan Cc: linac-eng@plato.aristotle.net Message-id: <85256E69.007FBAD8.00@mail.lrcc.on.ca> MIME-version: 1.0 Content-type: MULTIPART/MIXED; BOUNDARY="Boundary_(ID_jjLlQCEKPnGrOO/mkNDSdg)" Precedence: bulk X-Lotus-FromDomain: LRCC X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 01 Apr 2004 18:15:08 -0500 From: Randy.McVittie@lrcc.on.ca Subject: Re: Low dose rate [Scanned By SOPHOS Anti-Virus] Sender: owner-linac-eng@plato.aristotle.net To: faichichan Cc: linac-eng@plato.aristotle.net X-Lotus-FromDomain: LRCC X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f --Boundary_(ID_jjLlQCEKPnGrOO/mkNDSdg) Content-type: text/plain; charset=us-ascii Content-disposition: inline A PRF or 460 is pretty high. Our 600C had a high PRF like that and we were only getting a year or so out of our magnetrons and we had several failures of the accelerator. The target cannot handle the heat and you get a vacuum breach. As I recall the solution was getting a Varian specialist in and the pulse width out of the modulator was lengthened and the value of the gun resistors between the Pulse Transformer and the Gun were changed. The problem you have The machine was upgraded in the field from a 4/100 (non-computer 4MV machine) to a 600C (still a 4MV machine but with a computer control) The machine came into our clinic as a 4/100 and a year or two later it was upgraded. This was several years ago, and I didn't make a lot of notes about it at the time. These are just some re-collections. Since that work was done the PRF has dropped to the 330 range and has pretty much stayed there and the magnetron has been running for 3 or 4 years now. Good luck Randy "faichichan" on 2004-03-15 02:02:39 To: linac-eng@plato.aristotle.net cc: (bcc: Randy McVittie/Lrcc) Subject: Low dose rate [Scanned By SOPHOS Anti-Virus] --Boundary_(ID_jjLlQCEKPnGrOO/mkNDSdg) Content-type: text/plain; charset=windows-1257 Content-disposition: inline Content-transfer-encoding: quoted-printable Thank all advices. Perform daily the PRF vs dose rate calibration in morning. The calibrated PRF logged in morning checkout log now is about= 460, which is quite larger than normal PRF of a new installed Linac EX6= is 360 with range of 200 to 400. Magnetron current is running at 101. I ha= ve attemped to increase and decrease gun voltage 0.1 volt of normal value,= and current of electri magnet, but it has no obvious change in dose rat= e. Fai =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =A4=E9=A4=E9=A7K=EFO=C2H=DE=C9=FE=C1=AD^=ECy/=B4=EF=BAq=B8=DC - http://adimages.sina.com.hk/Lingua_0304.html ?=E9?z=A4H=C0A=EC?=A4U=B8=FC - ?=FB=A1s=A4?=FE=F7=F0C=C2=B8 - http://sms.sina.com.hk/game_index.html = --Boundary_(ID_jjLlQCEKPnGrOO/mkNDSdg)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HVK008QV01AHD@hubbard.azu.nl>; Fri, 2 Apr 2004 19:17:39 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004040219173718317 ; Fri, 02 Apr 2004 19:17:37 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA29023; Fri, 02 Apr 2004 19:19:40 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma028974; Fri, 02 Apr 2004 19:19:13 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id JAA17491 for linac-eng-list; Fri, 02 Apr 2004 09:46:08 -0600 (CST) Received: from mail21.nhs.uk (mail21.nhs.uk [62.6.139.215]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id JAA17487 for ; Fri, 02 Apr 2004 09:46:06 -0600 (CST) Received: from [10.191.254.3] (helo=relayint1.nhs.uk) by mail21.nhs.uk with esmtp (MTC MTA) id 1B9QrP-0002lL-Nk for linac-eng@plato.aristotle.net; Fri, 02 Apr 2004 16:45:35 +0100 Received: from relay.nhs.uk (194.62.42.142) by relayint1.nhs.uk (Syntegra-I1 7.0.008) id 40694D700010C8E3 for linac-eng@plato.aristotle.net; Fri, 02 Apr 2004 16:45:35 +0100 Received: from ccotrust.nhs.uk (10.128.97.66) by relay.nhs.uk (Syntegra-2 7.0.008) id 406D436C0002BC25 for linac-eng@plato.aristotle.net; Fri, 02 Apr 2004 16:45:35 +0100 Received: by gateway.ccotrust.nhs.uk id <328321>; Fri, 02 Apr 2004 16:38:36 +0100 Date: Fri, 02 Apr 2004 16:34:40 +0100 From: Sean Cubbin Subject: Victoreen repair Sender: owner-linac-eng@plato.aristotle.net To: "LINAC-ENG (E-mail)" Message-id: <04Apr2.163836bst.328321@gateway.ccotrust.nhs.uk> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 02 Apr 2004 16:34:40 +0100 From: Sean Cubbin Subject: Victoreen repair Sender: owner-linac-eng@plato.aristotle.net To: "LINAC-ENG (E-mail)" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f I am hoping to repair our Victoreen 7200 double check unit which has failed. Unfortunately there is a resistor I cannot see the value of due to burn damage. If anyone has the same instrument and knows what the value of R22 is, or could possibly have a look in their unit and let me know what it is, it would be much appreciated. Many thanks, Sean Cubbin.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HVK00G1UI73FQ@hubbard.azu.nl>; Sat, 3 Apr 2004 01:49:53 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004040301495123178 ; Sat, 03 Apr 2004 01:49:51 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id BAA02847; Sat, 03 Apr 2004 01:51:53 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma002841; Sat, 03 Apr 2004 01:51:44 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id QAA27379 for linac-eng-list; Fri, 02 Apr 2004 16:07:03 -0600 (CST) Received: from imo-d03.mx.aol.com (imo-d03.mx.aol.com [205.188.157.35]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id QAA27375 for ; Fri, 02 Apr 2004 16:07:02 -0600 (CST) Received: from SMcna39074@aol.com by imo-d03.mx.aol.com (mail_out_v37_r1.2.) id a.8.49a3dbe1 (15874); Fri, 02 Apr 2004 17:06:28 -0500 (EST) Received: from aol.com (mow-m03.webmail.aol.com [64.12.184.131]) by air-id07.mx.aol.com (v98.19) with ESMTP id MAILINID71-3e02406de3e42a5; Fri, 02 Apr 2004 17:06:28 -0500 Date: Fri, 02 Apr 2004 17:06:28 -0500 From: SMcna39074@aol.com Subject: Re: yld faults 600 cd Sender: owner-linac-eng@plato.aristotle.net To: ajengstl@gundluth.org Cc: linac-eng@plato.aristotle.net Message-id: <11BA2178.1EB97A02.0C0A0915@aol.com> MIME-version: 1.0 X-Mailer: Atlas Mailer 2.0 Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 8bit Precedence: bulk X-AOL-IP: 207.154.79.102 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 02 Apr 2004 17:06:28 -0500 From: SMcna39074@aol.com Subject: Re: yld faults 600 cd Sender: owner-linac-eng@plato.aristotle.net To: ajengstl@gundluth.org Cc: linac-eng@plato.aristotle.net X-AOL-IP: 207.154.79.102 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Might have something else going on. We found instability on yield faults/output due to the GunI autotransformer in the Aux Power supply to be arcing (low tension on the wiper with carbon burns). Unit is showing its age, SN 73. Stan at Cancer Center of Santa Barbara.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HVP000ZYKG3BD@hubbard.azu.nl>; Mon, 5 Apr 2004 19:26:42 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004040519263908271 ; Mon, 05 Apr 2004 19:26:39 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA23179; Mon, 05 Apr 2004 19:28:44 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma022555; Mon, 05 Apr 2004 19:26:47 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id KAA21512 for linac-eng-list; Mon, 05 Apr 2004 10:24:11 -0500 (CDT) Received: from PHSXCHICI3.partners.org (phsxchici3.mgh.harvard.edu [132.183.130.38]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id KAA21508 for ; Mon, 05 Apr 2004 10:24:10 -0500 (CDT) Received: by phsxchici3.mgh.harvard.edu with Internet Mail Service (5.5.2657.72) id <2DPM0MLK>; Mon, 05 Apr 2004 11:23:47 -0400 Date: Mon, 05 Apr 2004 11:23:17 -0400 From: "Maddox, Buford J" Subject: RE: Thanks to all Sender: owner-linac-eng@plato.aristotle.net To: 'Marvin Rathburn' , Linac-eng@plato.aristotle.net Message-id: <36298D09ED1AD311B4DC0008C7F4D4E1114663D3@phsexch6.partners.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 05 Apr 2004 11:23:17 -0400 From: "Maddox, Buford J" Subject: RE: Thanks to all Sender: owner-linac-eng@plato.aristotle.net To: 'Marvin Rathburn' , Linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f We have used the Keithley tracker and the Victoreen checker. Both work well. We use ARGUS software with them. -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Marvin Rathburn Sent: Thursday, April 01, 2004 7:18 AM To: Linac-eng@plato.aristotle.net Subject: Thanks to all Thanks to all who replied to my question on the checkmate. I now have some other products to look into. Best Regards Marvin Rathburn  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HVP004BOLLKAJ@hubbard.azu.nl>; Mon, 5 Apr 2004 19:51:23 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004040519512008852 ; Mon, 05 Apr 2004 19:51:20 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA29621; Mon, 05 Apr 2004 19:53:25 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma029425; Mon, 05 Apr 2004 19:52:32 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id KAA21804 for linac-eng-list; Mon, 05 Apr 2004 10:47:06 -0500 (CDT) Received: from webshield2.swchsc.on.ca ([142.76.1.63]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id KAA21800 for ; Mon, 05 Apr 2004 10:47:03 -0500 (CDT) Received: from unknown(142.76.240.40) by webshield2.swchsc.on.ca via csmap id d3e10ea6_86ee_11d8_9466_0002b3c25eda_30911; Mon, 05 Apr 2004 10:48:52 +0000 (UTC) Received: by bajor.tsrcc.on.ca with Internet Mail Service (5.5.2653.19) id ; Mon, 05 Apr 2004 11:46:33 -0400 Date: Mon, 05 Apr 2004 11:46:32 -0400 From: "Rozenblat, Alex" Subject: Siemens MLC head. Sender: owner-linac-eng@plato.aristotle.net To: "'linac-eng@plato.aristotle.net'" Message-id: <4631AA4F502ED711AE0700A0C9EBCF2964F6D7@bajor.tsrcc.on.ca> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_iPn8L5c7i52QNoeXWM6TCg)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 05 Apr 2004 11:46:32 -0400 From: "Rozenblat, Alex" Subject: Siemens MLC head. Sender: owner-linac-eng@plato.aristotle.net To: "'linac-eng@plato.aristotle.net'" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_iPn8L5c7i52QNoeXWM6TCg) Content-type: text/plain; charset=iso-8859-1 Hello, fellows I'd like to see if somebody else in a whole world got lucky like we did. (This statement, I realize, can lead to many jokes). Some time ago working on Siemens Primus (MLC head) we found a couple of metal balls (2.5 mm in diameter) that fell into our hands from a head of machine. Then we found on a floor 10 more similar metal balls. Both Jaws and whole MLC function fine. But then we found 13 similar balls on a floor of another Primus. Siemens suggested that they can come either from MLC (in-between leaves) or from Jaws (in latter case it's practically fatal because Jaws should stop operating). Both scenarios lead (according to Siemens) to a changing of a head of linac (for us it sounds like 2). Sounds familiar? Who else experienced this situation and what was done to cure the problem? Thank you, Alex Rozenblat TSRCC, Toronto --Boundary_(ID_iPn8L5c7i52QNoeXWM6TCg) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: quoted-printable Siemens MLC head.

Hello, fellows

I'd like to see if somebody else in a = whole world got lucky like we did. (This statement, I realize, can lead = to many jokes).

Some time ago  working on Siemens = Primus (MLC head) we found a couple of metal balls (2.5 mm in diameter) = that fell into our hands from a head of machine. Then we found on a = floor 10 more similar metal balls. Both Jaws and whole MLC function = fine. But then we found 13 similar balls on a floor of another = Primus.

Siemens suggested that they can come = either from MLC (in-between leaves) or from Jaws (in latter case it's = practically fatal because Jaws should stop operating). Both scenarios = lead (according to Siemens) to a changing of a head of linac (for us it = sounds like 2). Sounds familiar?

Who else experienced this situation = and what was done to cure the problem?

Thank you,

Alex Rozenblat
TSRCC, Toronto

--Boundary_(ID_iPn8L5c7i52QNoeXWM6TCg)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HVP00I20TVDZB@hubbard.azu.nl>; Mon, 5 Apr 2004 22:50:03 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004040522500112676 ; Mon, 05 Apr 2004 22:50:01 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id WAA11236; Mon, 05 Apr 2004 22:52:05 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma011199; Mon, 05 Apr 2004 22:51:36 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id NAA24495 for linac-eng-list; Mon, 05 Apr 2004 13:52:16 -0500 (CDT) Received: from pop.sca.hin.sk.ca (shin.communitynet.ca [216.174.136.2]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id NAA24491 for ; Mon, 05 Apr 2004 13:52:14 -0500 (CDT) Received: from smtp.scf.sk.ca (unverified [172.24.48.3]) by scf.sk.ca (Rockliffe SMTPRA 6.0.9) with SMTP id ; Mon, 05 Apr 2004 12:52:14 -0600 Received: (from RPC035 [172.24.49.35]) by smtp.scf.sk.ca (SAVSMTP 3.1.1.32) with SMTP id M2004040512521200714 ; Mon, 05 Apr 2004 12:52:12 -0600 Date: Mon, 05 Apr 2004 12:50:23 -0600 From: scot thiesson Subject: Re: Siemens MLC head. In-reply-to: <4631AA4F502ED711AE0700A0C9EBCF2964F6D7@bajor.tsrcc.on.ca> Sender: owner-linac-eng@plato.aristotle.net To: "'linac-eng@plato.aristotle.net'" , "Rozenblat, Alex" Message-id: Organization: a.b.c.c. MIME-version: 1.0 X-Mailer: Opera 6.0 build 1010 Content-type: text/plain; charset=windows-1252 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 (Normal) *** EOOH *** Date: Mon, 05 Apr 2004 12:50:23 -0600 From: scot thiesson Subject: Re: Siemens MLC head. In-reply-to: <4631AA4F502ED711AE0700A0C9EBCF2964F6D7@bajor.tsrcc.on.ca> Sender: owner-linac-eng@plato.aristotle.net To: "'linac-eng@plato.aristotle.net'" , "Rozenblat, Alex" Organization: a.b.c.c. X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 (Normal) Oh my. Indeed this sounds very bad for your MLC. They are likely the bearings that ride in between leaves of the MLC. When I was on the MLC course our class had the dubious honour of tearing (and I mean that literally) apart a Siemens MLC head. It was one that had been damaged by the leaves colliding. There were bearings rolling around everywhere when we were done! It was great fun. :) I know exactly what an MLC bearing looks like and can honestly say I never want to see another one. There is no field cure for this problem other than a new head! I hear that Siemens had many problems with the earlier versions ( I have no idea what that means) of the MLC as they were puking bearings in great number. This problem can also result in the leaves colliding at full speed, something that his design is well capable of doing. I think you should be able to detect the lack of bearings as sloppiness between leaves. Another life threatening failure that can occur from a leaf collision is the bending of a drive shaft. Both nasty nasty things that result in the purchase of a new head. I guess about all I can say is good luck? Let us know what happens as this has implications for all MLC primus owners. Scot Thiesson Senior Physics Tech. Allan Blair Cancer Centre Regina Saskatchewan Canada 4/5/2004 9:46:32 AM, "Rozenblat, Alex" wrote: > > Hello, fellows > > I'd like to see if somebody else in a whole world got lucky like we did. > > (This statement, I realize, can lead to many jokes). > > Some time ago working on Siemens Primus (MLC head) we found a couple of > > metal balls (2.5 mm in diameter) that fell into our hands from a head of > machine. Then we found on a floor 10 more similar metal balls. Both Jaws > and whole MLC function fine. But then we found 13 similar balls on a > > floor of another Primus. > > > Siemens suggested that they can come either from MLC (in-between leaves) > or from Jaws (in latter case it's practically fatal because Jaws should > stop operating). Both scenarios lead (according to Siemens) to a > > changing of a head of linac (for us it sounds like 2). Sounds familiar? > > Who else experienced this situation and what was done to cure the > > problem? > > > Thank you, > > Alex Rozenblat > > TSRCC, Toronto  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HVR00J6O60769@hubbard.azu.nl>; Tue, 6 Apr 2004 16:10:36 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004040616102031269 ; Tue, 06 Apr 2004 16:10:20 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id QAA11563; Tue, 06 Apr 2004 16:12:24 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma010913; Tue, 06 Apr 2004 16:10:31 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id HAA15109 for linac-eng-list; Tue, 06 Apr 2004 07:08:26 -0500 (CDT) Received: from titan.lhsc.on.ca (titan.lhsc.on.ca [142.158.2.20]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id HAA15105 for ; Tue, 06 Apr 2004 07:08:25 -0500 (CDT) Received: from mail.lrcc.on.ca (mail.lrcc.on.ca [142.158.120.242]) by titan.lhsc.on.ca (8.11.7p1+Sun/8.11.7) with SMTP id i36C7rW01882; Tue, 06 Apr 2004 08:07:53 -0400 (EDT) Received: by mail.lrcc.on.ca(Lotus SMTP MTA v4.6.7 (934.1 12-30-1999)) id 85256E6E.0042970A ; Tue, 06 Apr 2004 08:07:20 -0400 Date: Tue, 06 Apr 2004 08:07:17 -0400 From: Randy.McVittie@lrcc.on.ca Subject: Re: Siemens MLC head. Sender: owner-linac-eng@plato.aristotle.net To: scot thiesson Cc: "'linac-eng@plato.aristotle.net'" , "Rozenblat, Alex" Message-id: <85256E6E.00429601.00@mail.lrcc.on.ca> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Content-disposition: inline Precedence: bulk X-Lotus-FromDomain: LRCC X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 06 Apr 2004 08:07:17 -0400 From: Randy.McVittie@lrcc.on.ca Subject: Re: Siemens MLC head. Sender: owner-linac-eng@plato.aristotle.net To: scot thiesson Cc: "'linac-eng@plato.aristotle.net'" , "Rozenblat, Alex" Content-disposition: inline X-Lotus-FromDomain: LRCC X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f I'm glad I've got Varian MLC's here.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HVR0092YCYMUR@hubbard.azu.nl>; Tue, 6 Apr 2004 18:40:08 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004040618400702225 ; Tue, 06 Apr 2004 18:40:07 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA25191; Tue, 06 Apr 2004 18:42:11 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma025075; Tue, 06 Apr 2004 18:41:28 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id JAA18296 for linac-eng-list; Tue, 06 Apr 2004 09:25:57 -0500 (CDT) Received: from pop.sca.hin.sk.ca (shin.communitynet.ca [216.174.136.2]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id JAA18292 for ; Tue, 06 Apr 2004 09:25:55 -0500 (CDT) Received: from smtp.scf.sk.ca (unverified [172.24.48.3]) by scf.sk.ca (Rockliffe SMTPRA 6.0.9) with SMTP id for ; Tue, 06 Apr 2004 08:25:54 -0600 Received: (from RPC035 [172.24.49.35]) by smtp.scf.sk.ca (SAVSMTP 3.1.1.32) with SMTP id M2004040608255401242 for ; Tue, 06 Apr 2004 08:25:54 -0600 Date: Tue, 06 Apr 2004 08:24:03 -0600 From: scot thiesson Subject: Re: Siemens MLC head. Sender: owner-linac-eng@plato.aristotle.net To: linac-eng Message-id: Organization: a.b.c.c. MIME-version: 1.0 X-Mailer: Opera 6.0 build 1010 Content-type: text/plain; charset=windows-1252 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 (Normal) *** EOOH *** Date: Tue, 06 Apr 2004 08:24:03 -0600 From: scot thiesson Subject: Re: Siemens MLC head. Sender: owner-linac-eng@plato.aristotle.net To: linac-eng Organization: a.b.c.c. X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 (Normal) This didn't get posted the first time so... Oh my. Indeed this sounds very bad for your MLC. They are likely the bearings that ride in between leaves of the MLC. When I was on the MLC course our class had the dubious honour of tearing (and I mean that literally) apart a Siemens MLC head. It was one that had been damaged by the leaves colliding. There were bearings rolling around everywhere when we were done! It was great fun. :) I know exactly what an MLC bearing looks like and can honestly say I never want to see another one. There is no field cure for this problem other than a new head! I hear that Siemens had many problems with the earlier versions ( I have no idea what that means) of the MLC as they were puking bearings in great number. This problem can occur by having the leaves collide at full speed, something that this design is well capable of doing. I think you should be able to detect the lack of bearings as sloppiness between leaves. Another life threatening failure that can occur from a leaf collision is the bending of a drive shaft. Both nasty nasty things that result in the purchase of a new head. I guess about all I can say is good luck? Let us know what happens as this has implications for all MLC primus owners. Scot Thiesson Senior Physics Tech. Allan Blair Cancer Centre Regina Saskatchewan Canada  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HVR009Q3DN8IZ@hubbard.azu.nl>; Tue, 6 Apr 2004 18:55:00 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004040618545702472 ; Tue, 06 Apr 2004 18:54:57 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA28307; Tue, 06 Apr 2004 18:57:01 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma028162; Tue, 06 Apr 2004 18:56:16 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id JAA18921 for linac-eng-list; Tue, 06 Apr 2004 09:51:05 -0500 (CDT) Received: from email-out-01.biz.rr.com (email-out-01.biz.rr.com [24.30.200.26]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id JAA18917 for ; Tue, 06 Apr 2004 09:51:03 -0500 (CDT) Received: from fep02.biz.rr.com (fep02.biz.rr.com [24.30.199.8]) by email-out-01.biz.rr.com (8.12.10/8.12.10) with ESMTP id i36Ep1YZ016150; Tue, 06 Apr 2004 10:51:01 -0400 (EDT) Received: from pent4 ([24.173.18.166]) by fep02.biz.rr.com with ESMTP id <20040406145101.FLKK1557.fep02.biz.rr.com@pent4>; Tue, 06 Apr 2004 10:51:01 -0400 Date: Tue, 06 Apr 2004 09:49:04 -0500 From: Thomas McCausland Subject: Re: Siemens MLC head. In-reply-to: <4631AA4F502ED711AE0700A0C9EBCF2964F6D7@bajor.tsrcc.on.ca> Sender: owner-linac-eng@plato.aristotle.net To: "Rozenblat, Alex" , "'linac-eng@plato.aristotle.net'" Reply-to: acceltek@acceltekservice.com Message-id: <40727D10.6584.94E04@localhost> MIME-version: 1.0 X-Mailer: Pegasus Mail for Win32 (v3.12c) Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 06 Apr 2004 09:49:04 -0500 From: Thomas McCausland Subject: Re: Siemens MLC head. In-reply-to: <4631AA4F502ED711AE0700A0C9EBCF2964F6D7@bajor.tsrcc.on.ca> Sender: owner-linac-eng@plato.aristotle.net To: "Rozenblat, Alex" , "'linac-eng@plato.aristotle.net'" Reply-to: acceltek@acceltekservice.com X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f > > Hello, fellows > > I'd like to see if somebody else in a whole world got lucky like we > did. (This statement, I realize, can lead to many jokes). > > Some time ago working on Siemens Primus (MLC head) we found a couple > of metal balls (2.5 mm in diameter) that fell into our hands from a > head of machine. Then we found on a floor 10 more similar metal balls. > Both Jaws and whole MLC function fine. But then we found 13 similar > balls on a floor of another Primus. > > Siemens suggested that they can come either from MLC (in-between > leaves) or from Jaws (in latter case it's practically fatal because > Jaws should stop operating). Both scenarios lead (according to > Siemens) to a changing of a head of linac (for us it sounds like 2). > Sounds familiar? > > Who else experienced this situation and what was done to cure the > problem? > > Thank you, > > Alex Rozenblat > TSRCC, Toronto > Alex, How old are these heads? Also, have you noticed any other symptoms, such as leaves going out of calibration, etc..? Thanks in advance, and good luck. Thomas W. McCausland AccelTek Inc. 281-652-0059 888-619-8811  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HVR009ZPE3IIZ@hubbard.azu.nl>; Tue, 6 Apr 2004 19:04:31 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004040619042502645 ; Tue, 06 Apr 2004 19:04:25 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA00308; Tue, 06 Apr 2004 19:06:30 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma000154; Tue, 06 Apr 2004 19:05:45 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id KAA19188 for linac-eng-list; Tue, 06 Apr 2004 10:09:48 -0500 (CDT) Received: from chs-exchsv2.covhealth.com (exchangesvr.covhealth.com [199.250.70.121]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id KAA19184 for ; Tue, 06 Apr 2004 10:09:46 -0500 (CDT) Received: by chs-exchsv2.covhealth.com with Internet Mail Service (5.5.2653.19) id <2KK44JA3>; Tue, 06 Apr 2004 10:09:02 -0500 Date: Tue, 06 Apr 2004 10:09:02 -0500 From: "Lockhart, Ryan" Subject: Millenium MLC power dist board Sender: owner-linac-eng@plato.aristotle.net To: 'clinac listserve' Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_fjOPiOlSRsvO6f9upTJyoQ)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 06 Apr 2004 10:09:02 -0500 From: "Lockhart, Ryan" Subject: Millenium MLC power dist board Sender: owner-linac-eng@plato.aristotle.net To: 'clinac listserve' X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_fjOPiOlSRsvO6f9upTJyoQ) Content-type: text/plain; CHARSET=US-ASCII We have a Millienium MLC that's almost 1 year old and we have gone through 2 power distribution boards so far. The first one burned up R11 and R23 and carriage A wouldn't run in. The second one gave a hyperterminal message of "switched motor power not correct but 15V analog ok". These two have both been under warranty but soon the warranty will expire. Has anybody had a problem with these boards in the past and have you had any luck repairing them yourself? I would like to repair these two boards if possible to save some money. I haven't had any luck finding a bad component on either one. Any guesses? Ryan Lockhart Covenant Medical Center Waterloo, IA --Boundary_(ID_fjOPiOlSRsvO6f9upTJyoQ) Content-type: text/html Content-transfer-encoding: quoted-printable Millenium MLC power dist board

We have a Millienium MLC that's almost = 1 year old and we have gone through 2 power distribution boards so = far.  The first one burned up R11 and R23 and carriage A wouldn't = run in.  The second one gave a hyperterminal message of = "switched motor power not correct but 15V analog ok".  = These two have both been under warranty but soon the warranty will = expire.  Has anybody had a problem with these boards in the past = and have you had any luck repairing them yourself?  I would like = to repair these two boards if possible to save some money.  I = haven't had any luck finding a bad component on either one.

Any guesses?

Ryan Lockhart
Covenant Medical Center
Waterloo, IA

--Boundary_(ID_fjOPiOlSRsvO6f9upTJyoQ)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HVR00HAWHJ2C2@hubbard.azu.nl>; Tue, 6 Apr 2004 20:18:45 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004040620184204000 ; Tue, 06 Apr 2004 20:18:42 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id UAA15821; Tue, 06 Apr 2004 20:20:47 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma015621; Tue, 06 Apr 2004 20:19:56 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id LAA20589 for linac-eng-list; Tue, 06 Apr 2004 11:17:35 -0500 (CDT) Received: from chs-exchsv2.covhealth.com (exchangesvr.covhealth.com [199.250.70.121]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id LAA20585 for ; Tue, 06 Apr 2004 11:17:33 -0500 (CDT) Received: by chs-exchsv2.covhealth.com with Internet Mail Service (5.5.2653.19) id <2KK44JZX>; Tue, 06 Apr 2004 11:17:02 -0500 Date: Tue, 06 Apr 2004 11:17:01 -0500 From: "Lockhart, Ryan" Subject: Millenium MLC power dist board Sender: owner-linac-eng@plato.aristotle.net To: "'linac-eng@plato.aristotle.net'" Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_fsTHNlMFktVhvEEANeuN1w)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 06 Apr 2004 11:17:01 -0500 From: "Lockhart, Ryan" Subject: Millenium MLC power dist board Sender: owner-linac-eng@plato.aristotle.net To: "'linac-eng@plato.aristotle.net'" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_fsTHNlMFktVhvEEANeuN1w) Content-type: text/plain; CHARSET=US-ASCII We have a Millienium MLC that's almost 1 year old and we have gone through 2 power distribution boards so far. The first one burned up R11 and R23 and carriage A wouldn't run in. The second one gave a hyperterminal message of "switched motor power not correct but 15V analog ok". These two have both been under warranty but soon the warranty will expire. Has anybody had a problem with these boards in the past and have you had any luck repairing them yourself? I would like to repair these two boards if possible to save some money. I haven't had any luck finding a bad component on either one. Any guesses? Ryan Lockhart Covenant Medical Center Waterloo, IA --Boundary_(ID_fsTHNlMFktVhvEEANeuN1w) Content-type: text/html Content-transfer-encoding: quoted-printable Millenium MLC power dist board

We have a Millienium MLC that's almost = 1 year old and we have gone through 2 power distribution boards so = far.  The first one burned up R11 and R23 and carriage A wouldn't = run in.  The second one gave a hyperterminal message of = "switched motor power not correct but 15V analog ok".  = These two have both been under warranty but soon the warranty will = expire.  Has anybody had a problem with these boards in the past = and have you had any luck repairing them yourself?  I would like = to repair these two boards if possible to save some money.  I = haven't had any luck finding a bad component on either one.

Any guesses?

Ryan Lockhart
Covenant Medical Center
Waterloo, IA

--Boundary_(ID_fsTHNlMFktVhvEEANeuN1w)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HVR007IGQ4LUN@hubbard.azu.nl>; Tue, 6 Apr 2004 23:24:35 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004040623243007158 ; Tue, 06 Apr 2004 23:24:30 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id XAA22886; Tue, 06 Apr 2004 23:26:34 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma022817; Tue, 06 Apr 2004 23:26:06 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id OAA26247 for linac-eng-list; Tue, 06 Apr 2004 14:01:18 -0500 (CDT) Received: from titan.lhsc.on.ca (titan.lhsc.on.ca [142.158.2.20]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id OAA26243 for ; Tue, 06 Apr 2004 14:01:17 -0500 (CDT) Received: from mail.lrcc.on.ca (mail.lrcc.on.ca [142.158.120.242]) by titan.lhsc.on.ca (8.11.7p1+Sun/8.11.7) with SMTP id i36J0iW12106; Tue, 06 Apr 2004 15:00:44 -0400 (EDT) Received: by mail.lrcc.on.ca(Lotus SMTP MTA v4.6.7 (934.1 12-30-1999)) id 85256E6E.00686342 ; Tue, 06 Apr 2004 15:00:11 -0400 Date: Tue, 06 Apr 2004 14:59:21 -0400 From: Randy.McVittie@lrcc.on.ca Subject: Re: Millenium MLC power dist board Sender: owner-linac-eng@plato.aristotle.net To: "Lockhart, Ryan" Cc: 'clinac listserve' Message-id: <85256E6E.006860D7.00@mail.lrcc.on.ca> MIME-version: 1.0 Content-type: MULTIPART/MIXED; BOUNDARY="Boundary_(ID_AIP0dKZpdH1eV22Pcx2dOQ)" Precedence: bulk X-Lotus-FromDomain: LRCC X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 06 Apr 2004 14:59:21 -0400 From: Randy.McVittie@lrcc.on.ca Subject: Re: Millenium MLC power dist board Sender: owner-linac-eng@plato.aristotle.net To: "Lockhart, Ryan" Cc: 'clinac listserve' X-Lotus-FromDomain: LRCC X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f --Boundary_(ID_AIP0dKZpdH1eV22Pcx2dOQ) Content-type: text/plain; charset=us-ascii Content-disposition: inline I haven't had that problem yet with my MMLC. I had a quick look at the circuit and the current shouldn't be too high in the circuit because the other resistors are 43k2 and 10k and R11 and R23 are only 20 ohms What about the tantalum capacitors C10 and C20, are they leaky. If the board is multilayer you may or may not be able to repair it. If you try just take your time de-soldering parts if a part is connected to a ground or power plane it will sink a lot of heat. Good Luck Randy "Lockhart, Ryan" on 2004-04-06 11:09:02 To: "'clinac listserve'" cc: (bcc: Randy McVittie/Lrcc) Subject: Millenium MLC power dist board We have a Millienium MLC that's almost 1 year old and we have gone through 2 power distribution boards so far. The first one burned up R11 and R23 and carriage A wouldn't run in. The second one gave a hyperterminal message of "switched motor power not correct but 15V analog ok". These two have both been under warranty but soon the warranty will expire. Has anybody had a problem with these boards in the past and have you had any luck repairing them yourself? I would like to repair these two boards if possible to save some money. I haven't had any luck finding a bad component on either one. Any guesses? Ryan Lockhart Covenant Medical Center Waterloo, IA --Boundary_(ID_AIP0dKZpdH1eV22Pcx2dOQ) Content-type: text/html; name=att1.htm Content-description: Internet HTML Content-disposition: attachment; filename=att1.htm Content-transfer-encoding: base64 PCFET0NUWVBFIEhUTUwgUFVCTElDICItLy9XM0MvL0RURCBIVE1MIDMuMi8vRU4iPg0KPEhUTUw+ DQo8SEVBRD4NCjxNRVRBIEhUVFAtRVFVSVY9IkNvbnRlbnQtVHlwZSIgQ09OVEVOVD0idGV4dC9o dG1sOyBjaGFyc2V0PVVTLUFTQ0lJIj4NCjxNRVRBIE5BTUU9IkdlbmVyYXRvciIgQ09OVEVOVD0i TVMgRXhjaGFuZ2UgU2VydmVyIHZlcnNpb24gNS41LjI2NTcuNzMiPg0KPFRJVExFPk1pbGxlbml1 bSBNTEMgcG93ZXIgZGlzdCBib2FyZDwvVElUTEU+DQo8L0hFQUQ+DQo8Qk9EWT4NCg0KPFA+PEZP TlQgU0laRT0yIEZBQ0U9IkFyaWFsIj5XZSBoYXZlIGEgTWlsbGllbml1bSBNTEMgdGhhdCdzIGFs bW9zdCAxIHllYXIgb2xkIGFuZCB3ZSBoYXZlIGdvbmUgdGhyb3VnaCAyIHBvd2VyIGRpc3RyaWJ1 dGlvbiBib2FyZHMgc28gZmFyLiZuYnNwOyBUaGUgZmlyc3Qgb25lIGJ1cm5lZCB1cCBSMTEgYW5k IFIyMyBhbmQgY2FycmlhZ2UgQSB3b3VsZG4ndCBydW4gaW4uJm5ic3A7IFRoZSBzZWNvbmQgb25l IGdhdmUgYSBoeXBlcnRlcm1pbmFsIG1lc3NhZ2Ugb2YgJnF1b3Q7c3dpdGNoZWQgbW90b3IgcG93 ZXIgbm90IGNvcnJlY3QgYnV0IDE1ViBhbmFsb2cgb2smcXVvdDsuJm5ic3A7IFRoZXNlIHR3byBo YXZlIGJvdGggYmVlbiB1bmRlciB3YXJyYW50eSBidXQgc29vbiB0aGUgd2FycmFudHkgd2lsbCBl eHBpcmUuJm5ic3A7IEhhcyBhbnlib2R5IGhhZCBhIHByb2JsZW0gd2l0aCB0aGVzZSBib2FyZHMg aW4gdGhlIHBhc3QgYW5kIGhhdmUgeW91IGhhZCBhbnkgbHVjayByZXBhaXJpbmcgdGhlbSB5b3Vy c2VsZj8mbmJzcDsgSSB3b3VsZCBsaWtlIHRvIHJlcGFpciB0aGVzZSB0d28gYm9hcmRzIGlmIHBv c3NpYmxlIHRvIHNhdmUgc29tZSBtb25leS4mbmJzcDsgSSBoYXZlbid0IGhhZCBhbnkgbHVjayBm aW5kaW5nIGEgYmFkIGNvbXBvbmVudCBvbiBlaXRoZXIgb25lLjwvRk9OVD48L1A+DQoNCjxQPjxG T05UIFNJWkU9MiBGQUNFPSJBcmlhbCI+QW55IGd1ZXNzZXM/PC9GT05UPg0KPC9QPg0KDQo8UD48 Rk9OVCBTSVpFPTIgRkFDRT0iQXJpYWwiPlJ5YW4gTG9ja2hhcnQ8L0ZPTlQ+DQo8QlI+PEZPTlQg U0laRT0yIEZBQ0U9IkFyaWFsIj5Db3ZlbmFudCBNZWRpY2FsIENlbnRlcjwvRk9OVD4NCjxCUj48 Rk9OVCBTSVpFPTIgRkFDRT0iQXJpYWwiPldhdGVybG9vLCBJQTwvRk9OVD4NCjwvUD4NCg0KPC9C T0RZPg0KPC9IVE1MPg0K --Boundary_(ID_AIP0dKZpdH1eV22Pcx2dOQ)--  1,, X-Coding-System: iso-latin-1-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HVS0015GPO2Y9@hubbard.azu.nl>; Wed, 7 Apr 2004 12:14:27 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004040712140918674 ; Wed, 07 Apr 2004 12:14:09 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id MAA28060; Wed, 07 Apr 2004 12:16:14 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma027423; Wed, 07 Apr 2004 12:14:26 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id DAA11715 for linac-eng-list; Wed, 07 Apr 2004 03:34:25 -0500 (CDT) Received: from hk.sina.com.hk ([202.85.139.117]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id DAA11711 for ; Wed, 07 Apr 2004 03:34:22 -0500 (CDT) Received: (qmail 5011 invoked by uid 99); Wed, 07 Apr 2004 16:02:12 +0000 Date: Wed, 07 Apr 2004 16:02:12 +0800 From: =?big5?B?ZmFpY2hpY2hhbg==?= Subject: =?big5?B?UkU6UmU6IGJhZCBsb29rIG9mIFJlZmxlY3QgUG93ZXIgd2F2ZWZvcm0=?= Sender: owner-linac-eng@plato.aristotle.net To: davidh359@comcast.net Cc: linac-eng@plato.aristotle.net Message-id: <20040407160212.5010.qmail@hk.sina.com.hk> MIME-version: 1.0 Content-type: text/plain; charset=big5 Content-disposition: inline Content-transfer-encoding: 8BIT Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 07 Apr 2004 16:02:12 +0800 From: =?big5?B?ZmFpY2hpY2hhbg==?= Subject: =?big5?B?UkU6UmU6IGJhZCBsb29rIG9mIFJlZmxlY3QgUG93ZXIgd2F2ZWZvcm0=?= Sender: owner-linac-eng@plato.aristotle.net To: davidh359@comcast.net Cc: linac-eng@plato.aristotle.net Content-disposition: inline X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Thanks all. Your undertading is correct. The bad look of Reflect power causes AFC detune often. Have adjusted Tuning Wand of Water load last night I now get better Reflect power waveform ( refl.bmp attached ) & symmetrical change rate of AFC. Reflect power is not yet perfect. I have changed Magnetron Magnet I from 20.4 to 20.0 & 20.8 of limits to activate MAGT interlock. It has no change. Water temperature is normal 40 degree. fai >Hi, Fai > This sounds tricky---if by "folding over", you mean that the left hand ear is only half the height of the right, my suspcian is that you guide temperature is a little low or high---this can affect the matching as you fill the guide with RF. Is the top central portion of the waveform reasonably flat? Is the width of the pulse the same as before? Is the apmitude roughly the same as before? If so, you might want to try increasing or decreasing the gun filaments a bit (stay within the normal range of settings), and seeing if it makes a difference. Also make sure you machine is running at the nominal 40 deg. C operating temperature. If my understanding of "folding over" is incorrect, please e-mail me bak, with a more precise description of exactly what you are seeing, with amplitude, pulse width, pulse shape, etc., and I'll see if I can come up with some possibilities for you. Good Luck! >David H. >> >> Reflect Power of Clinac 6/100C is strange. Left hand rabbit ear of waveform >> folds over. I have manually tuned AFC but it has no improvement. >> >> Thanks >> >> Fai >> >> >> ================================================================================ >> ========== >> ¤é¤é§K¶OÀH®É¾Ç­^»y/´¶³q¸Ü - >> http://adimages.sina.com.hk/Lingua_0304.html >> ´_¬¡¸`­­©w ¤â¾÷¤p¹CÀ¸ - >> http://sms.sina.com.hk/game_index.html >> ¶R¤@°e¤@¡I903¡u³Ìnice¹aÁn¡v¡A¤U¸ü¤@­º¦A°e§A903«a­xºq¡I- >> http://sms.sina.com.hk >. > ========================================================================================== ¤é¤é§K¶OÀH®É¾Ç­^»y/´¶³q¸Ü - http://adimages.sina.com.hk/Lingua_0304.html ´_¬¡¸`­­©w ¤â¾÷¤p¹CÀ¸ - http://sms.sina.com.hk/game_index.html ¶R¤@°e¤@¡I903¡u³Ìnice¹aÁn¡v¡A¤U¸ü¤@­º¦A°e§A903«a­xºq¡I- http://sms.sina.com.hk  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HVT006BSX05OG@hubbard.azu.nl>; Thu, 8 Apr 2004 03:48:10 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004040803480503472 ; Thu, 08 Apr 2004 03:48:05 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id DAA24830; Thu, 08 Apr 2004 03:50:10 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma024753; Thu, 08 Apr 2004 03:49:34 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id TAA26051 for linac-eng-list; Wed, 07 Apr 2004 19:01:52 -0500 (CDT) Received: from ispmxmta06-srv.alltel.net (ispmxmta06-srv.alltel.net [166.102.165.167]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id TAA26047 for ; Wed, 07 Apr 2004 19:01:50 -0500 (CDT) Received: from Desktop ([69.40.204.16]) by ispmxmta06-srv.alltel.net with SMTP id <20040408000119.EWKE22068.ispmxmta06-srv.alltel.net@Desktop> for ; Wed, 07 Apr 2004 19:01:19 -0500 Date: Wed, 07 Apr 2004 20:01:20 -0400 From: Ray Kaczur Subject: Beamstopper and IMRT question Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <004a01c41cfc$9f956180$1800a8c0@Desktop> MIME-version: 1.0 X-Mailer: Microsoft Outlook Express 6.00.2800.1158 Content-type: text/plain; charset=Windows-1252 Content-transfer-encoding: 7bit Precedence: bulk X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 References: X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 *** EOOH *** Date: Wed, 07 Apr 2004 20:01:20 -0400 From: Ray Kaczur Subject: Beamstopper and IMRT question Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 Posting this question for a friend: Varian Clinac 2100C with 6MV and 10 MV, IMRT ready but has a beamstopper. Does any know if there are any potential problems with MLC function due to the presence of the heavy beamstopper? Thank you for any advice. Ray Kaczur, M.S., DABR Cleveland, Ohio  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HVU00EYQ3QQ2E@hubbard.azu.nl>; Thu, 8 Apr 2004 06:13:51 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004040806134204856 ; Thu, 08 Apr 2004 06:13:42 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id GAA15105; Thu, 08 Apr 2004 06:15:47 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma015059; Thu, 08 Apr 2004 06:15:12 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id VAA28761 for linac-eng-list; Wed, 07 Apr 2004 21:43:15 -0500 (CDT) Received: from HSCEMAIL5.hscs.virginia.edu (hscemail5.hscs.Virginia.EDU [128.143.176.152]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id VAA28757 for ; Wed, 07 Apr 2004 21:43:13 -0500 (CDT) Received: from HSCSEMAIL1.hscs.virginia.edu ([128.143.165.12]) by HSCEMAIL5.hscs.virginia.edu with Microsoft SMTPSVC(5.0.2195.6713); Wed, 07 Apr 2004 22:41:06 -0400 Date: Wed, 07 Apr 2004 22:42:41 -0400 From: "Orsolini, Joe D *HS" Subject: RE: Beamstopper and IMRT question Sender: owner-linac-eng@plato.aristotle.net To: Ray Kaczur , linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 Content-type: text/plain; charset=utf-8 Content-transfer-encoding: 8bit Precedence: bulk X-MimeOLE: Produced By Microsoft Exchange V6.0.6487.1 Content-Class: urn:content-classes:message Thread-Topic: Beamstopper and IMRT question Thread-Index: AcQdCGpG5cfubm1fRCCL4jfYAsvITAACkruI X-OriginalArrivalTime: 08 Apr 2004 02:41:06.0421 (UTC) FILETIME=[F1104A50:01C41D12] X-MIME-Autoconverted: from base64 to 8bit by plato.aristotle.net id VAA28758 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 07 Apr 2004 22:42:41 -0400 From: "Orsolini, Joe D *HS" Subject: RE: Beamstopper and IMRT question Sender: owner-linac-eng@plato.aristotle.net To: Ray Kaczur , linac-eng@plato.aristotle.net X-MimeOLE: Produced By Microsoft Exchange V6.0.6487.1 Content-Class: urn:content-classes:message Thread-Topic: Beamstopper and IMRT question Thread-Index: AcQdCGpG5cfubm1fRCCL4jfYAsvITAACkruI X-OriginalArrivalTime: 08 Apr 2004 02:41:06.0421 (UTC) FILETIME=[F1104A50:01C41D12] X-MIME-Autoconverted: from base64 to 8bit by plato.aristotle.net id VAA28758 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Ray, We have a 2300C/D with a 52 leaf MLC and a beamstopper, no functionality problems from the beamstopper, but some of the couch angles that the docs come up with may be an issue due to the beamstopper. Just make sure that the beamstopper mechanism is well lubricated, as if it vibrates, it tends to loosen some of the screws holding the MLC boards in. Just my .02 Joe Orsolini RTT -----Original Message----- From: owner-linac-eng@plato.aristotle.net on behalf of Ray Kaczur Sent: Wed 4/7/2004 7:01 PM To: linac-eng@plato.aristotle.net Cc: Subject: Beamstopper and IMRT question Posting this question for a friend: Varian Clinac 2100C with 6MV and 10 MV, IMRT ready but has a beamstopper. Does any know if there are any potential problems with MLC function due to the presence of the heavy beamstopper? Thank you for any advice. Ray Kaczur, M.S., DABR Cleveland, Ohio  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HVU001JEW3GCB@hubbard.azu.nl>; Thu, 8 Apr 2004 16:26:57 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004040816263420596 ; Thu, 08 Apr 2004 16:26:34 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id QAA14320; Thu, 08 Apr 2004 16:28:39 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma011665; Thu, 08 Apr 2004 16:21:18 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id HAA06311 for linac-eng-list; Thu, 08 Apr 2004 07:36:18 -0500 (CDT) Received: from titan.lhsc.on.ca (titan.lhsc.on.ca [142.158.2.20]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id HAA06307 for ; Thu, 08 Apr 2004 07:36:16 -0500 (CDT) Received: from mail.lrcc.on.ca (mail.lrcc.on.ca [142.158.120.242]) by titan.lhsc.on.ca (8.11.7p1+Sun/8.11.7) with SMTP id i38CZjW29856; Thu, 08 Apr 2004 08:35:45 -0400 (EDT) Received: by mail.lrcc.on.ca(Lotus SMTP MTA v4.6.7 (934.1 12-30-1999)) id 85256E70.00452717 ; Thu, 08 Apr 2004 08:35:19 -0400 Date: Thu, 08 Apr 2004 08:35:18 -0400 From: Randy.McVittie@lrcc.on.ca Subject: Re: Beamstopper and IMRT question Sender: owner-linac-eng@plato.aristotle.net To: Ray Kaczur Cc: linac-eng@plato.aristotle.net Message-id: <85256E70.004526BE.00@mail.lrcc.on.ca> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Content-disposition: inline Precedence: bulk X-Lotus-FromDomain: LRCC X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 08 Apr 2004 08:35:18 -0400 From: Randy.McVittie@lrcc.on.ca Subject: Re: Beamstopper and IMRT question Sender: owner-linac-eng@plato.aristotle.net To: Ray Kaczur Cc: linac-eng@plato.aristotle.net Content-disposition: inline X-Lotus-FromDomain: LRCC X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f There shouldn't be any problem since the machine is balanced, whether or not it has a beamstopper and a counterweight or just a a counterweight. Randy McVittie "Ray Kaczur" on 2004-04-07 20:01:20 To: linac-eng@plato.aristotle.net cc: (bcc: Randy McVittie/Lrcc) Subject: Beamstopper and IMRT question Posting this question for a friend: Varian Clinac 2100C with 6MV and 10 MV, IMRT ready but has a beamstopper. Does any know if there are any potential problems with MLC function due to the presence of the heavy beamstopper? Thank you for any advice. Ray Kaczur, M.S., DABR Cleveland, Ohio  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HVU006CUY87SU@hubbard.azu.nl>; Thu, 8 Apr 2004 17:12:28 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004040817115622632 ; Thu, 08 Apr 2004 17:11:56 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id RAA24387; Thu, 08 Apr 2004 17:14:02 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma024249; Thu, 08 Apr 2004 17:13:30 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id IAA07590 for linac-eng-list; Thu, 08 Apr 2004 08:30:11 -0500 (CDT) Received: from mail2.tenethealth.com (mail2.tenethealth.com [199.222.14.8]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id IAA07586 for ; Thu, 08 Apr 2004 08:30:09 -0500 (CDT) Received: from cscan3.tenethealth.net (cscan3.tenethealth.com [172.18.167.70]) by mail2.tenethealth.com (8.11.6/8.11.6) with ESMTP id i38DTc908872; Thu, 08 Apr 2004 08:29:38 -0500 Received: from 172.18.167.160 by cscan3.tenethealth.net with SMTP (Tenet Healthcare CF SMTP Relay (MMS v5.5.3)); Thu, 08 Apr 2004 08:29:35 -0500 Received: from nodnsquery(172.18.167.215) by tenhdcthvscan01.tenethealth.net via csmap id c6d8e49e_8960_11d8_9bed_0002b3d786fe_420; Thu, 08 Apr 2004 08:29:35 -0500 (CDT) Received: from tenbmcthemx01.tenethealth.net ([10.30.2.48]) by tenhdcthemx51.tenethealth.net with Microsoft SMTPSVC(5.0.2195.6713); Thu, 08 Apr 2004 08:29:34 -0500 Date: Thu, 08 Apr 2004 08:29:33 -0500 From: "Kyle, John" Subject: RE: Beamstopper and IMRT question Sender: owner-linac-eng@plato.aristotle.net To: Ray Kaczur , linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 8bit Precedence: bulk X-MimeOLE: Produced By Microsoft Exchange V6.0.6249.0 content-class: urn:content-classes:message Thread-Topic: Beamstopper and IMRT question Thread-Index: AcQdC/5caDdA86Q4SpSZG/5czlruzAAYOIPw X-OriginalArrivalTime: 08 Apr 2004 13:29:34.0931 (UTC) FILETIME=[8857C230:01C41D6D] X-WSS-ID: 6C6B8C351366480-01-01 X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id IAA07587 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 08 Apr 2004 08:29:33 -0500 From: "Kyle, John" Subject: RE: Beamstopper and IMRT question Sender: owner-linac-eng@plato.aristotle.net To: Ray Kaczur , linac-eng@plato.aristotle.net X-MimeOLE: Produced By Microsoft Exchange V6.0.6249.0 content-class: urn:content-classes:message Thread-Topic: Beamstopper and IMRT question Thread-Index: AcQdC/5caDdA86Q4SpSZG/5czlruzAAYOIPw X-OriginalArrivalTime: 08 Apr 2004 13:29:34.0931 (UTC) FILETIME=[8857C230:01C41D6D] X-WSS-ID: 6C6B8C351366480-01-01 X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id IAA07587 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f We have a 2100CD with a beamstopper and MMLC. To eliminate any limitations we had more lead shielding added to the walls and ceiling. Our Beamstopper is now retracted permanently. It was a huge job but worth it. John Kyle Coordinator Technical Support Services Brookwood Medical Center 205-877-1092 -----Original Message----- From: Ray Kaczur [mailto:rkaczur@alltel.net] Sent: Wednesday, April 07, 2004 7:01 PM To: linac-eng@plato.aristotle.net Subject: Beamstopper and IMRT question Posting this question for a friend: Varian Clinac 2100C with 6MV and 10 MV, IMRT ready but has a beamstopper. Does any know if there are any potential problems with MLC function due to the presence of the heavy beamstopper? Thank you for any advice. Ray Kaczur, M.S., DABR Cleveland, Ohio  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HVU008ETZ8MP0@hubbard.azu.nl> for jkok@sims-ms-daemon; Thu, 8 Apr 2004 17:34:24 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004040817335723117 for ; Thu, 08 Apr 2004 17:33:57 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id RAA01152 for ; Thu, 08 Apr 2004 17:36:03 +0200 (MET DST) Received: from smtp.jiscmail.ac.uk(130.246.192.48) by armstrong.azu.nl via smap (V1.3) id xma000898; Thu, 08 Apr 2004 17:35:28 +0200 Received: from LISTSERV.JISCMAIL.AC.UK (jiscmail.ac.uk) by smtp.jiscmail.ac.uk (LSMTP for Windows NT v1.1b) with SMTP id <9.000ECCD9@smtp.jiscmail.ac.uk>; Thu, 08 Apr 2004 16:33:20 +0100 Received: from JISCMAIL.AC.UK by JISCMAIL.AC.UK (LISTSERV-TCP/IP release 1.8e) with spool id 35587628 for MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK; Thu, 08 Apr 2004 16:33:09 +0100 Received: from 130.246.192.53 by JISCMAIL.AC.UK (SMTPL release 1.0i) with TCP; Thu, 08 Apr 2004 16:33:09 +0100 Received: from anchor-post-37.mail.demon.net (anchor-post-36.mail.demon.net [194.217.242.86]) by fili.jiscmail.ac.uk (8.12.8/8.12.8) with ESMTP id i38FXDY8017392 for ; Thu, 08 Apr 2004 16:33:13 +0100 Received: from rtphysicsbarts.demon.co.uk ([193.237.112.237] helo=rtphysicsbarts) by anchor-post-37.mail.demon.net with smtp (Exim 3.35 #1) id 1BBbWi-000AQO-0b for MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK; Thu, 08 Apr 2004 16:33:13 +0100 Date: Thu, 08 Apr 2004 16:40:37 +0100 From: Chris Usher Subject: Re: Re IPEM corporate memebrship Sender: Discussion amongst academic Medical Physics in the UK To: MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK Reply-to: Discussion amongst academic Medical Physics in the UK Message-id: <000a01c41d7f$e628c460$ed70edc1@rtphysicsbarts> MIME-version: 1.0 X-Mailer: Microsoft Outlook Express 5.50.4807.1700 Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 7bit Precedence: list X-RAL-MFrom: X-RAL-Connect: X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4807.1700 X-CCLRC-SPAM-report: -4.9 : BAYES_00 X-Scanned-By: MIMEDefang 2.38 References: <601D897A3DE58643BDDEB67497C07D48A1790F@rhhtexchange.hey.nhs.uk> X-Priority: 3 *** EOOH *** Date: Thu, 08 Apr 2004 16:40:37 +0100 From: Chris Usher Subject: Re: Re IPEM corporate memebrship Sender: Discussion amongst academic Medical Physics in the UK To: MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK Reply-to: Discussion amongst academic Medical Physics in the UK X-RAL-MFrom: X-RAL-Connect: X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4807.1700 X-CCLRC-SPAM-report: -4.9 : BAYES_00 X-Scanned-By: MIMEDefang 2.38 X-Priority: 3 Well getting the ballot paper was what made me ask, but there wasn't anything else in the envelope Chris the transitional arrangements are probably in the post to you. I got mine today with a ballot paper. but there's 5 cases so I didn't want to type it out! Barry Taylor, Clinical Scientist Bioengineering Department Tulley Medical Physics Building, Hull Royal Infirmary Anlaby Road, Hull HU3 2JZ Tel 01482 675928, fax 01482 675750 -----Original Message----- From: Chris Usher [mailto:chris@RTPHYSICSBARTS.DEMON.CO.UK] Sent: 08 April 2004 16:00 To: MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK Subject: Re IPEM corporate memebrship Does anyone know what IPEM are proposing for people who have only just got state registration, and are on the second half of PATR. Will they have to continue with PATR as it is and do the 10000 word portfolio and have another viva, or is some transitional arrangement being organised for them. If it isn't, they will be faced with seeing people who are a few months behind them in the process being admitted to the immense priveleges of being a corporate member (can someone remind me what those are) whilst they have to wait another 2 years. Chris, Barts  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HVV009FE03UJ6@hubbard.azu.nl>; Thu, 8 Apr 2004 17:53:04 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004040817523723438 ; Thu, 08 Apr 2004 17:52:37 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id RAA25493; Thu, 08 Apr 2004 17:54:42 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma025186; Thu, 08 Apr 2004 17:53:24 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id JAA08313 for linac-eng-list; Thu, 08 Apr 2004 09:05:26 -0500 (CDT) Received: from HSCEMAIL5.hscs.virginia.edu (hscemail5.hscs.Virginia.EDU [128.143.176.152]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id JAA08309 for ; Thu, 08 Apr 2004 09:05:25 -0500 (CDT) Received: from HSCSEMAIL3.hscs.virginia.edu ([128.143.165.14]) by HSCEMAIL5.hscs.virginia.edu with Microsoft SMTPSVC(5.0.2195.6713); Thu, 08 Apr 2004 10:03:17 -0400 Date: Thu, 08 Apr 2004 10:04:54 -0400 From: "Dove, Bill E *HS" Subject: RE: Beamstopper and IMRT question Sender: owner-linac-eng@plato.aristotle.net To: Randy.McVittie@lrcc.on.ca, Ray Kaczur Cc: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 8bit Precedence: bulk X-MimeOLE: Produced By Microsoft Exchange V6.0.6487.1 Content-Class: urn:content-classes:message Thread-Topic: Beamstopper and IMRT question Thread-Index: AcQdcce9VXhuMLJWQiiD8+nJqlZD2QAAChnQ X-OriginalArrivalTime: 08 Apr 2004 14:03:17.0437 (UTC) FILETIME=[3DD9AED0:01C41D72] X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id JAA08310 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 08 Apr 2004 10:04:54 -0400 From: "Dove, Bill E *HS" Subject: RE: Beamstopper and IMRT question Sender: owner-linac-eng@plato.aristotle.net To: Randy.McVittie@lrcc.on.ca, Ray Kaczur Cc: linac-eng@plato.aristotle.net X-MimeOLE: Produced By Microsoft Exchange V6.0.6487.1 Content-Class: urn:content-classes:message Thread-Topic: Beamstopper and IMRT question Thread-Index: AcQdcce9VXhuMLJWQiiD8+nJqlZD2QAAChnQ X-OriginalArrivalTime: 08 Apr 2004 14:03:17.0437 (UTC) FILETIME=[3DD9AED0:01C41D72] X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id JAA08310 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f We have a 2300CD (s/n:32) that does IMRT and has a beamstopper. The beam stopper does not cause any problems with IMRT but has been a real pain-in-the-posterior-aspect (if you get my drift) other reasons. William Dove, RTR(T) Service Engineer University of Virginia Health System Rad. Oncology Dept., Radiological Physics Div. Box 800375, Room 1787 Charlottesville, 22908 Voice: (434) 924-9422 FAX: (434) 982-3520 -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Randy.McVittie@lrcc.on.ca Sent: Thursday, April 08, 2004 8:35 AM To: Ray Kaczur Cc: linac-eng@plato.aristotle.net Subject: Re: Beamstopper and IMRT question There shouldn't be any problem since the machine is balanced, whether or not it has a beamstopper and a counterweight or just a a counterweight. Randy McVittie "Ray Kaczur" on 2004-04-07 20:01:20 To: linac-eng@plato.aristotle.net cc: (bcc: Randy McVittie/Lrcc) Subject: Beamstopper and IMRT question Posting this question for a friend: Varian Clinac 2100C with 6MV and 10 MV, IMRT ready but has a beamstopper. Does any know if there are any potential problems with MLC function due to the presence of the heavy beamstopper? Thank you for any advice. Ray Kaczur, M.S., DABR Cleveland, Ohio  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HVV009IUDHAGA@hubbard.azu.nl> for jkok@sims-ms-daemon; Thu, 8 Apr 2004 22:41:47 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004040816070219941 for ; Thu, 08 Apr 2004 16:07:02 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id QAA07965 for ; Thu, 08 Apr 2004 16:09:07 +0200 (MET DST) Received: from smtp.jiscmail.ac.uk(130.246.192.48) by armstrong.azu.nl via smap (V1.3) id xma006315; Thu, 08 Apr 2004 16:00:34 +0200 Received: from LISTSERV.JISCMAIL.AC.UK (jiscmail.ac.uk) by smtp.jiscmail.ac.uk (LSMTP for Windows NT v1.1b) with SMTP id <8.000ECBB4@smtp.jiscmail.ac.uk>; Thu, 08 Apr 2004 14:58:25 +0100 Received: from JISCMAIL.AC.UK by JISCMAIL.AC.UK (LISTSERV-TCP/IP release 1.8e) with spool id 35581519 for MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK; Thu, 08 Apr 2004 14:58:15 +0100 Received: from 130.246.192.53 by JISCMAIL.AC.UK (SMTPL release 1.0i) with TCP; Thu, 08 Apr 2004 14:58:14 +0100 Received: from mail21.nhs.uk (mail21.nhs.uk [62.6.139.215]) by fili.jiscmail.ac.uk (8.12.8/8.12.8) with ESMTP id i38DwJY8008842 for ; Thu, 08 Apr 2004 14:58:19 +0100 Received: from [10.191.254.3] (helo=relayint2.nhs.uk) by mail21.nhs.uk with esmtp (MTC MTA) id 1BBa2o-0006s0-EL for medical-physics-engineering@jiscmail.ac.uk; Thu, 08 Apr 2004 14:58:14 +0100 Received: from relay.nhs.uk (194.62.42.144) by relayint2.nhs.uk (Syntegra-I2 7.0.008) id 4039DF7100C456A4 for medical-physics-engineering@jiscmail.ac.uk; Thu, 08 Apr 2004 14:58:14 +0100 Received: from mail.chtbham (193.240.128.10) by relay.nhs.uk (Syntegra-4 7.0.008) (authenticated as smtp_swbh_nhs_uk@es2002.nhs.uk) id 407548930000BC1D; Thu, 08 Apr 2004 14:58:14 +0100 Received: by MAIL with Internet Mail Service (5.5.2653.19) id <2QNJH5DA>; Thu, 08 Apr 2004 14:58:24 +0100 Date: Thu, 08 Apr 2004 14:58:24 +0100 From: "medical.physics" Subject: Re: [NucMed] collimators "old chestnut" Sender: Discussion amongst academic Medical Physics in the UK To: MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK Reply-to: Discussion amongst academic Medical Physics in the UK Message-id: <51438628291DD5118B6000D0B7B90E200984A216@MAIL> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: text/plain; charset=iso-8859-1 Precedence: list X-RAL-MFrom: X-RAL-Connect: X-CCLRC-SPAM-report: -4.9 : BAYES_00 X-Scanned-By: MIMEDefang 2.38 Comments: cc: "rob@nuclearmedicine.net.au" *** EOOH *** Date: Thu, 08 Apr 2004 14:58:24 +0100 From: "medical.physics" Subject: Re: [NucMed] collimators "old chestnut" Sender: Discussion amongst academic Medical Physics in the UK To: MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK Reply-to: Discussion amongst academic Medical Physics in the UK X-RAL-MFrom: X-RAL-Connect: X-CCLRC-SPAM-report: -4.9 : BAYES_00 X-Scanned-By: MIMEDefang 2.38 Comments: cc: "rob@nuclearmedicine.net.au" Hi Rob I dont think its an old chestnut at all to be honest! Its a topic of discussion over here in our department at the moment too. We're looking at ways of testing extrinsic uniformity for our cameras fitted with foil collimators, to detect damage that would otherwise be missed using a sheet source/fillable flood source. There have been suggestions from Harpell Associates....click this link to see... http://www.harpellassociates.com/nufi/nufi-facts.htm And maybe nuclear fields could come up with some suggestions.....click this link to go to their homepage for contact info. http://www.nuclearfields.com/home.html My boss Bill Thomson says he has a paper on how to test foil collimators. Trouble is he's on annual leave! When he comes back I'll find out the reference and email it to you. In the meantime, a quick search on Medline/Pubmed ( http://www.ncbi.nlm.nih.gov/entrez/query.fcgi ) yielded only one useful reference from a fellow sountryman of yours: Australas Phys Eng Sci Med. 1997 Dec;20(4):242-7 Cheers Joe O'Brien City Hospital, Dudley Road, Birmingham UK -----Original Message----- From: rob@nuclearmedicine.net.au [mailto:rob@nuclearmedicine.net.au] Sent: Wednesday, April 07, 2004 4:46 AM To: Tulley.Nicholas; Mostafa.Abul; O'Brien.Joseph Subject: [NucMed] collimators "old chestnut" Dear Nucmed, I know its an old chestnut but I was wondering if anyone has done any more recent or exhaustive testing comparing foil and cast collimators? thanks Rob Williams -------------------------------------------------------------------- mail2web - Check your email from the web at http://mail2web.com/ . _______________________________________________ Nucmed mailing list Nucmed@imaging.robarts.ca ---- To unsubscribe from this list go to http://www.imaging.robarts.ca/mailman/listinfo/nucmed and follow the instructions  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HVW00MJCELCI9@hubbard.azu.nl> for jkok@sims-ms-daemon; Fri, 9 Apr 2004 12:03:19 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004040912031105870 for ; Fri, 09 Apr 2004 12:03:11 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id MAA15510 for ; Fri, 09 Apr 2004 12:05:17 +0200 (MET DST) Received: from caviar.isi.uu.nl(131.211.144.138) by armstrong.azu.nl via smap (V1.3) id xma015493; Fri, 09 Apr 2004 12:05:03 +0200 Received: from chouffe.radth.ruu.nl (chouffe.radth.ruu.nl [131.211.145.4]) by caviar.isi.uu.nl (Postfix) with ESMTP id 95C10110600 for ; Fri, 09 Apr 2004 12:01:06 +0200 (METDST) Received: from (caviar.isi.uu.nl) [131.211.144.138] by chouffe.radth.ruu.nl with esmtp (Exim 3.35 #1 (Debian)) id 1BBtGN-00015c-00; Fri, 09 Apr 2004 12:29:32 +0200 Received: from smtp7.wanadoo.nl (smtp7.wanadoo.nl [194.134.35.207]) by caviar.isi.uu.nl (Postfix) with ESMTP id 131C8110600 for ; Fri, 09 Apr 2004 12:01:06 +0200 (METDST) Received: from laptop (i0514.vwa.wanadoo.nl [194.134.206.2]) by smtp7.wanadoo.nl (Postfix) with ESMTP id AFF5A2A4A3; Fri, 09 Apr 2004 12:02:49 +0200 (CEST) Date: Fri, 09 Apr 2004 12:01:54 +0200 From: Thierry de Vlieg Subject: FW: CTL-midden2 To: "Egbert van Drie (hccnet)" , Jan Kok , 'Marcel Wels' <2372@verbindingskip.nl>, Pieter de Gier , Theo Timmer Message-id: <20040409100249.AFF5A2A4A3@smtp7.wanadoo.nl> MIME-version: 1.0 X-Mailer: Microsoft Office Outlook, Build 11.0.5510 Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 7bit Importance: High X-MSMail-Priority: High X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2727.1300 Thread-Index: AcQcCjqBG44k357+TD+owI7cdYLC1gCDz8GA X-Priority: 1 (Highest) *** EOOH *** Date: Fri, 09 Apr 2004 12:01:54 +0200 From: Thierry de Vlieg Subject: FW: CTL-midden2 To: "Egbert van Drie (hccnet)" , Jan Kok , 'Marcel Wels' <2372@verbindingskip.nl>, Pieter de Gier , Theo Timmer Importance: High X-MSMail-Priority: High X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2727.1300 Thread-Index: AcQcCjqBG44k357+TD+owI7cdYLC1gCDz8GA X-Priority: 1 (Highest) 3. De opkomstplaats West is veranderd. De set West staat voortaan op de Boerendijk 34 in de brandweerkazerne.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HW200IKGZ8U4O@hubbard.azu.nl>; Tue, 13 Apr 2004 01:15:08 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004041301145325775 ; Tue, 13 Apr 2004 01:14:53 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id BAA14544; Tue, 13 Apr 2004 01:17:01 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma014539; Tue, 13 Apr 2004 01:16:49 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id QAA24778 for linac-eng-list; Mon, 12 Apr 2004 16:39:18 -0500 (CDT) Received: from stjames1.mcg.edu (stjames1.mcg.edu [158.93.6.9]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id QAA24774 for ; Mon, 12 Apr 2004 16:39:16 -0500 (CDT) Received: from navgate2.mcg.edu by stjames1.mcg.edu via smtpd (for plato.aristotle.net [206.66.224.2]) with ESMTP; Mon, 12 Apr 2004 17:39:14 -0400 Received: from mail.mcg.edu ([158.93.1.5]) by navgate2.mcg.edu (SAVSMTP 3.1.2.35) with SMTP id M2004041217382107155 for ; Mon, 12 Apr 2004 17:38:21 -0400 Received: from THEHUB-MTA by mail.mcg.edu with Novell_GroupWise; Mon, 12 Apr 2004 17:39:13 -0400 Date: Mon, 12 Apr 2004 17:38:51 -0400 From: Michael Nordin Subject: sf6 shelf life Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.5.2 Beta Content-type: text/plain; charset=US-ASCII Content-disposition: inline Content-transfer-encoding: 7bit Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 12 Apr 2004 17:38:51 -0400 From: Michael Nordin Subject: sf6 shelf life Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Content-disposition: inline X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f What is the shelf life of sf6? Some distrubuters quote 2 or 3years which doesn't seem resonable. Thanks, Mike Nordin  1,, X-Coding-System: iso-latin-1-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HW300G58DAF7L@hubbard.azu.nl>; Tue, 13 Apr 2004 06:18:27 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004041306181428179 ; Tue, 13 Apr 2004 06:18:14 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id GAA02152; Tue, 13 Apr 2004 06:20:22 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma002120; Tue, 13 Apr 2004 06:19:59 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id VAA28170 for linac-eng-list; Mon, 12 Apr 2004 21:33:13 -0500 (CDT) Received: from hk.sina.com.hk ([202.85.139.117]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id VAA28166 for ; Mon, 12 Apr 2004 21:33:07 -0500 (CDT) Received: (qmail 29688 invoked by uid 99); Tue, 13 Apr 2004 10:08:25 +0000 Date: Tue, 13 Apr 2004 10:08:25 +0800 From: =?big5?B?ZmFpY2hpY2hhbg==?= Subject: =?big5?B?UkU6UmU6IFJFOlJlOiBiYWQgbG9vayBvZiBSZWZsZWN0IFBvd2VyIHdhdmVmb3Jt?= Sender: owner-linac-eng@plato.aristotle.net To: =?big5?B?IkRhdmlkIEgiICA=?= Cc: linac-eng@plato.aristotle.net Message-id: <20040413100825.29686.qmail@hk.sina.com.hk> MIME-version: 1.0 Content-type: text/plain; charset=big5 Content-disposition: inline Content-transfer-encoding: 8BIT Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 13 Apr 2004 10:08:25 +0800 From: =?big5?B?ZmFpY2hpY2hhbg==?= Subject: =?big5?B?UkU6UmU6IFJFOlJlOiBiYWQgbG9vayBvZiBSZWZsZWN0IFBvd2VyIHdhdmVmb3Jt?= Sender: owner-linac-eng@plato.aristotle.net To: =?big5?B?IkRhdmlkIEgiICA=?= Cc: linac-eng@plato.aristotle.net Content-disposition: inline X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hi David: Thanks the detailed explanation about reflected power. It gives my understanding deeply. The Lianc now is working as well as new one. Fai >Hi, Fai > Thanks for the picture--it helps my understanding quite a bit. >Actually, this looks like a fairly normal reflected power waveform. As you >discovered, the tuning wand has the most affect in helping to clean up the >signal. Part of what you are seeing in the left hand portion, is the fill >time of the guide. As the high voltage pulse rises, and begins to excite >the magnetron, it is rapidly changing frequency---obviously, during this >time, the frequency from the magnetron and the frequency of the guide don't >match, so the guide rejects this power--the left hand ear. as the high >voltage pulse falls, the frequency again changes rapidly, and the power is >rejected--the right ear. The more rapidly the magnetron reaches the >matching guide frequency, the narrower and sharper the left ear is. The >left ear will almost always be wider, and rise slower, than the righthand >ear, because the AFC needs time to aquire its signals, process them, and >drive the tuning motor to match the frequency. If you h seen a worsening of >the signal over time, then you might want to check, as you did, the tuning >wand, the line stretcher, the amplitude of the crystal signals, the balance >of the AFC, the amplitudes of the signals, and the mechanical driving of the >tuning motor--=the motor can wear over time, and take longer to drive the >magnetron to frequency. The waveform is pretty flat in the central area, >whcih tells me that the magnet power is fine--in both electromagnet and >fixed magnets, in my expoerience, when the gauss is weak, the waveform won;t >come all the way up to the baseline. This used to be a clue to me on the >old 6/100's when to replace the fixed magnet. I would always do the >replacement when the megnetron needed to be replaced, since magnetrons >become conditioned to a certain gauss, and when the gauss is changed, they >tend to start arcing. Unless your having problems with the machine coming >up to dose rate, or getting yield faults, or some other operational problem, >I would say that your system is fine as it is. You can spend a lot of time >and effort, and even money on parts, and not get any significant improvement >over what you already have acheived. Sometimes it is hard to know exactly >when yo stop fixing a problem :) >Good luck! >David H. >From: "faichichan" >To: >Sent: Wednesday, April 07, 2004 1:41 AM >Subject: RE:Re: bad look of Reflect Power waveform > > >> >> Sorry! missed attach refl.bmp >> >> fai >> >> >> >> >Hi, Fai >> > This sounds tricky---if by "folding over", you mean that the left >hand ear is only half the height of the right, my suspcian is that you guide >temperature is a little low or high---this can affect the matching as you >fill the guide with RF. Is the top central portion of the waveform >reasonably flat? Is the width of the pulse the same as before? Is the >apmitude roughly the same as before? If so, you might want to try >increasing or decreasing the gun filaments a bit (stay within the normal >range of settings), and seeing if it makes a difference. Also make sure you >machine is running at the nominal 40 deg. C operating temperature. If my >understanding of "folding over" is incorrect, please e-mail me bak, with a >more precise description of exactly what you are seeing, with amplitude, >pulse width, pulse shape, etc., and I'll see if I can come up with some >possibilities for you. Good Luck! >> >David H. >> >> >> >> Reflect Power of Clinac 6/100C is strange. Left hand rabbit ear of >waveform >> >> folds over. I have manually tuned AFC but it has no improvement. >> >> >> >> Thanks >> >> >> >> Fai >> >> >> >> >> >> >============================================================================ >==== >> >> ========== >> >> ¤é¤é§K¶OÀH®É¾Ç­^»y/´¶³q¸Ü - >> >> http://adimages.sina.com.hk/Lingua_0304.html >> >> ´_¬¡¸`­­©w ¤â¾÷¤p¹CÀ¸ - >> >> http://sms.sina.com.hk/game_index.html >> >> ¶R¤@°e¤@¡I903¡u³Ìnice¹aÁn¡v¡A¤U¸ü¤@­º¦A°e§A903«a­xºq¡I- >> >> http://sms.sina.com.hk >> >. >> > >> >============================================================================ >============== >> ¤é¤é§K¶OÀH®É¾Ç­^»y/´¶³q¸Ü - >> http://adimages.sina.com.hk/Lingua_0304.html >> ´_¬¡¸`­­©w ¤â¾÷¤p¹CÀ¸ - >> http://sms.sina.com.hk/game_index.html >> ¶R¤@°e¤@¡I903¡u³Ìnice¹aÁn¡v¡A¤U¸ü¤@­º¦A°e§A903«a­xºq¡I- >> http://sms.sina.com.hk >> > > >---------------------------------------------------------------------------- >---- > > > > > >. > ========================================================================================== ´_¬¡¸`­­©w ¤â¾÷¤p¹CÀ¸ - http://sms.sina.com.hk/game_index.html ¬fªÛ¡BªL¹ÅªY¡B­ô­ô ¬ÛÁ¡¦³±oDOWNLOAD¡I- http://sms.sina.com.hk/clogo_index.html  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HW3000BZSE1VX@hubbard.azu.nl> for jkok@sims-ms-daemon; Tue, 13 Apr 2004 11:44:46 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004041311442103784 for ; Tue, 13 Apr 2004 11:44:21 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id LAA14726 for ; Tue, 13 Apr 2004 11:46:28 +0200 (MET DST) Received: from smtp.jiscmail.ac.uk(130.246.192.48) by armstrong.azu.nl via smap (V1.3) id xma014488; Tue, 13 Apr 2004 11:45:27 +0200 Received: from LISTSERV.JISCMAIL.AC.UK (jiscmail.ac.uk) by smtp.jiscmail.ac.uk (LSMTP for Windows NT v1.1b) with SMTP id <7.000EF042@smtp.jiscmail.ac.uk>; Tue, 13 Apr 2004 10:43:15 +0100 Received: from JISCMAIL.AC.UK by JISCMAIL.AC.UK (LISTSERV-TCP/IP release 1.8e) with spool id 35661925 for MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK; Tue, 13 Apr 2004 10:43:15 +0100 Received: from 130.246.192.52 by JISCMAIL.AC.UK (SMTPL release 1.0i) with TCP; Tue, 13 Apr 2004 10:43:15 +0100 Received: from mail23.nhs.uk (mail23.nhs.uk [62.6.139.221]) by kili.jiscmail.ac.uk (8.12.8/8.12.8) with ESMTP id i3D9gkxe006722 for ; Tue, 13 Apr 2004 10:42:51 +0100 Received: from [10.191.254.3] (helo=relayint2.nhs.uk) by mail23.nhs.uk with esmtp (MTC MTA) id 1BDKRF-0006CT-2o for MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK; Tue, 13 Apr 2004 10:42:41 +0100 Received: from relay.nhs.uk (194.62.42.142) by relayint2.nhs.uk (Syntegra-I2 7.0.008) id 4039DF7100D00668 for MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK; Tue, 13 Apr 2004 10:42:40 +0100 Received: from cddah-gw1.xcddahn.nhs.uk (194.189.174.49) by relay.nhs.uk (Syntegra-2 7.0.008) (authenticated as smtp_ndhcnt_northy_nhs_uk@es2002.nhs.uk) id 407B9A9C0001AE69 for MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK; Tue, 13 Apr 2004 10:42:40 +0100 Received: from CDDAH-VS1.xcddahn.nhs.uk ([194.189.174.83]) by cddah-gw1.xcddahn.nhs.uk with Microsoft SMTPSVC(5.0.2195.6713); Tue, 13 Apr 2004 10:44:52 +0100 Date: Tue, 13 Apr 2004 10:44:52 +0100 From: "Mackie Alison (RXP) Medical Physics" Subject: Re: [NucMed] collimators "old chestnut" Sender: Discussion amongst academic Medical Physics in the UK To: MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK Reply-to: Discussion amongst academic Medical Physics in the UK Message-id: MIME-version: 1.0 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_bSXjvlXB1DNn1BsA4MZ5zQ)" Precedence: list X-RAL-MFrom: X-RAL-Connect: Content-Class: urn:content-classes:message X-MimeOLE: Produced By Microsoft Exchange V6.0.6249.0 Thread-Topic: [NucMed] collimators "old chestnut" Thread-Index: AcQhNQ1PZUupDVrbQKOHCQvKuRtuSAABYXTw X-OriginalArrivalTime: 13 Apr 2004 09:44:52.0421 (UTC) FILETIME=[F834BF50:01C4213B] X-CCLRC-SPAM-report: -4.8 : BAYES_00,HTML_MESSAGE X-Scanned-By: MIMEDefang 2.39 *** EOOH *** Date: Tue, 13 Apr 2004 10:44:52 +0100 From: "Mackie Alison (RXP) Medical Physics" Subject: Re: [NucMed] collimators "old chestnut" Sender: Discussion amongst academic Medical Physics in the UK To: MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK Reply-to: Discussion amongst academic Medical Physics in the UK X-RAL-MFrom: X-RAL-Connect: Content-Class: urn:content-classes:message X-MimeOLE: Produced By Microsoft Exchange V6.0.6249.0 Thread-Topic: [NucMed] collimators "old chestnut" Thread-Index: AcQhNQ1PZUupDVrbQKOHCQvKuRtuSAABYXTw X-OriginalArrivalTime: 13 Apr 2004 09:44:52.0421 (UTC) FILETIME=[F834BF50:01C4213B] X-CCLRC-SPAM-report: -4.8 : BAYES_00,HTML_MESSAGE X-Scanned-By: MIMEDefang 2.39 This is a multi-part message in MIME format. --Boundary_(ID_bSXjvlXB1DNn1BsA4MZ5zQ) Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: quoted-printable I've done the point source at a distance test - it's beautifully simple = and can show problems. Interestingly, collimator appeared to be ok with = NEMA SPECT Spatial Resolution phantom and a collimator hole angulation = error phantom! But then one only checks collimator hole angulation = errors at certain points! I'd use this test with all new collimators in = future. =20 Alison Mackie Consultant Medical Physicist, Head of Nuclear Medicine Services Alison.Mackie@cddah.nhs.uk University Hospital of North Durham, Durham, UK, DH1 5TW Tel: 0191 333 2219 Fax: 0191 386 5695 Please note that any views expressed are my own and not necessarily = those of my employer.=20 -----Original Message----- From: Avison Mike (RAE) Bradford Hospitals NHS Trust=20 Sent: 13 April 2004 09:51 To: MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK Subject: Re: [NucMed] collimators "old chestnut" Hi =20 The American's have long advocated the strange pratice of placing a = point source at 3-4m distance, and just visually appraising the result = (presumably there is an expected dish effect due to the set up). I'm = ashamed to say I've never tried this. Advocates of good quality cast = collimators say this seperates the goats from the sheep. It may be that = it does show differences more clearly than other methods of uniformity = testing, but I remain to be convinced that differences which only show = when your subject is at 4 metres really matter! I'd be happy to = contribute a few images if you want to make some comparisons (all our LE = collimators are currently foil cast are e.g. GE starcam and Millenium MG = I think). Of course there are issues other than uniformity septal = penetration / star artifacts is probably equally contentious, resolution = vs sensitivty perhaps less so, and having plotted a lot of mfr data I = think there is probably no difference in this respect between cast and = foil. =20 =20 =20 =20 Mike Avison Medical Physicist Bradford Royal Infirmary BD9 6RJ =20 Phone 01274 364 135 Fax 01274 364 134 Mobile 0790 44 55 068 =20 Mike.Avison@bradfordhospitals.nhs.uk =20 and/or =20 saltpiefarm@yahoo.co.uk >>> medical.physics@SWBH.NHS.UK 08-Apr-04 2:58:24 pm >>> Hi Rob I dont think its an old chestnut at all to be honest! Its a topic of discussion over here in our department at the moment too. We're looking at ways of testing extrinsic uniformity for our cameras = fitted with foil collimators, to detect damage that would otherwise be missed = using a sheet source/fillable flood source. There have been suggestions from Harpell Associates....click this link = to see... http://www.harpellassociates.com/nufi/nufi-facts.htm And maybe nuclear fields could come up with some suggestions.....click = this link to go to their homepage for contact info. http://www.nuclearfields.com/home.html My boss Bill Thomson says he has a paper on how to test foil = collimators. Trouble is he's on annual leave! When he comes back I'll find out the reference and email it to you. In the meantime, a quick search on Medline/Pubmed ( http://www.ncbi.nlm.nih.gov/entrez/query.fcgi = ) yielded only one = useful reference from a fellow sountryman of yours: Australas Phys Eng Sci Med. 1997 Dec;20(4):242-7 Cheers Joe O'Brien City Hospital, Dudley Road, Birmingham UK -----Original Message----- From: rob@nuclearmedicine.net.au [ mailto:rob@nuclearmedicine.net.au] Sent: Wednesday, April 07, 2004 4:46 AM To: Tulley.Nicholas; Mostafa.Abul; O'Brien.Joseph Subject: [NucMed] collimators "old chestnut" Dear Nucmed, I know its an old chestnut but I was wondering if anyone has done any more recent or exhaustive testing comparing foil and cast collimators? thanks Rob Williams -------------------------------------------------------------------- mail2web - Check your email from the web at http://mail2web.com/ . _______________________________________________ Nucmed mailing list Nucmed@imaging.robarts.ca ---- To unsubscribe from this list go to http://www.imaging.robarts.ca/mailman/listinfo/nucmed and follow the instructions --Boundary_(ID_bSXjvlXB1DNn1BsA4MZ5zQ) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: quoted-printable
I've done the point = source at a=20 distance test - it's beautifully simple and can show problems. = Interestingly,=20 collimator appeared to be ok with NEMA SPECT Spatial Resolution phantom = and a=20 collimator hole angulation error phantom! But then one only checks = collimator=20 hole angulation errors at certain points! I'd use this test with all new = collimators in future.
 

Alison Mackie
Consultant Medical Physicist,
Head = of=20 Nuclear Medicine = Services

Alison.Mackie@cddah.nhs.uk

University=20 Hospital of North Durham, Durham, UK, DH1 5TW
Tel: 0191 333 = 2219
Fax: 0191=20 386 5695

Please note that any views expressed are my own and not=20 necessarily those of my employer.

-----Original Message-----
From: Avison Mike (RAE) = Bradford=20 Hospitals NHS Trust
Sent: 13 April 2004 09:51
To: = MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK
Subject: Re: = [NucMed]=20 collimators "old chestnut"

Hi
 
The American's have long advocated the strange = pratice of=20 placing a point source at 3-4m distance, and just visually appraising = the=20 result (presumably there is an expected dish effect due to the set=20 up). I'm ashamed to say I've never tried this. Advocates of good = quality=20 cast collimators say this seperates the goats from the sheep. It may = be that=20 it does show differences more clearly than other methods of uniformity = testing, but I remain to be convinced that differences which only show = when=20 your subject is at 4 metres really matter! I'd be happy to contribute = a few=20 images if you want to make some comparisons (all our LE collimators = are=20 currently foil cast are e.g. GE starcam and Millenium MG I think). Of = course=20 there are issues other than uniformity septal penetration / star = artifacts is=20 probably equally contentious, resolution vs sensitivty perhaps less = so, and=20 having plotted a lot of mfr data I think there is probably no = difference in=20 this respect between cast and foil.
 
 
 
 
Mike Avison
Medical Physicist
Bradford Royal = Infirmary
BD9=20 6RJ
 
Phone 01274 364 135
Fax      01274 = 364=20 134
Mobile 0790 44 55 068
 
 
and/or
 
saltpiefarm@yahoo.co.uk
>>>=20 medical.physics@SWBH.NHS.UK 08-Apr-04 2:58:24 pm >>>
Hi=20 Rob

I dont think its an old chestnut at all to be = honest!

Its a=20 topic of discussion over here in our department at the moment=20 too.

We're looking at ways of testing extrinsic uniformity for = our=20 cameras fitted
with foil collimators, to detect damage that would = otherwise=20 be missed using
a sheet source/fillable flood source.

There = have=20 been suggestions from Harpell Associates....click this link=20 to
see...

http://www.= harpellassociates.com/nufi/nufi-facts.htm


And=20 maybe nuclear fields could come up with some suggestions.....click=20 this
link to go to their homepage for contact info.

http://www.nuclearfields.= com/home.html


My=20 boss Bill Thomson says he has a paper on how to test foil=20 collimators.
Trouble is he's on annual leave! When he comes back = I'll find=20 out the
reference and email it to you.

In the meantime, a = quick=20 search on Medline/Pubmed (
http://www.n= cbi.nlm.nih.gov/entrez/query.fcgi =20 ) yielded only one useful
reference from a fellow sountryman of=20 yours:
Australas Phys Eng Sci Med. 1997=20 Dec;20(4):242-7

Cheers

Joe O'Brien
City Hospital, = Dudley=20 Road, Birmingham UK



-----Original Message-----
From: = rob@nuclearmedicine.net.au [mailto:rob@nuclearmedicine.ne= t.au]
Sent:=20 Wednesday, April 07, 2004 4:46 AM
To: Tulley.Nicholas; = Mostafa.Abul;=20 O'Brien.Joseph
Subject: [NucMed] collimators "old = chestnut"


Dear=20 Nucmed,
I know its an old chestnut but I was wondering if anyone = has done=20 any
more recent or exhaustive testing  comparing foil and cast = collimators?

thanks

Rob=20 = Williams

---------------------------------------------------------= -----------
mail2web=20 - Check your email from the web at
http://mail2web.com/=20 = .



_______________________________________________
Nucme= d=20 mailing list
Nucmed@imaging.robarts.ca
----
To unsubscribe = from this=20 list go to
http://www= .imaging.robarts.ca/mailman/listinfo/nucmed
and=20 follow the instructions
--Boundary_(ID_bSXjvlXB1DNn1BsA4MZ5zQ)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HW40047V8QZSD@hubbard.azu.nl>; Tue, 13 Apr 2004 17:37:55 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004041311322403375 ; Tue, 13 Apr 2004 11:32:24 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id LAA12298; Tue, 13 Apr 2004 11:34:31 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma012201; Tue, 13 Apr 2004 11:34:12 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id BAA00229 for linac-eng-list; Tue, 13 Apr 2004 01:54:34 -0500 (CDT) Received: from mail21.nhs.uk (mail21.nhs.uk [62.6.139.215]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id BAA00225 for ; Tue, 13 Apr 2004 01:54:32 -0500 (CDT) Received: from [10.191.254.3] (helo=relayint2.nhs.uk) by mail21.nhs.uk with esmtp (MTC MTA) id 1BDHo1-0007Ps-No for linac-eng@plato.aristotle.net; Tue, 13 Apr 2004 07:54:01 +0100 Received: from relay.nhs.uk (194.62.42.143) by relayint2.nhs.uk (Syntegra-I2 7.0.008) id 4039DF7100CEB4E5 for linac-eng@plato.aristotle.net; Tue, 13 Apr 2004 07:54:01 +0100 Received: from ubht.swest.nhs.uk (194.101.53.2) by relay.nhs.uk (Syntegra-3 7.0.008) id 40755BED00126A50 for linac-eng@plato.aristotle.net; Tue, 13 Apr 2004 07:54:01 +0100 Received: by ubhtfw1.ubht.swest.nhs.uk id <119041>; Tue, 13 Apr 2004 07:32:20 +0100 Date: Tue, 13 Apr 2004 07:53:44 +0100 From: "White, Malcolm" Subject: RE: sf6 shelf life Sender: owner-linac-eng@plato.aristotle.net To: "'linac-eng@plato.aristotle.net'" Message-id: <04Apr13.073220bst.119041@ubhtfw1.ubht.swest.nhs.uk> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: text/plain; CHARSET=US-ASCII Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 13 Apr 2004 07:53:44 +0100 From: "White, Malcolm" Subject: RE: sf6 shelf life Sender: owner-linac-eng@plato.aristotle.net To: "'linac-eng@plato.aristotle.net'" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f >What is the shelf life of sf6? Some distrubuters quote 2 or >3years which >doesn't seem resonable. As far as I know there is no shelf life for SF6 as such. Several bottles here at Bristol have been on the machines for a number of years (possibly 5 or longer). Malcolm White  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HW400A2JB6K1X@hubbard.azu.nl>; Tue, 13 Apr 2004 18:32:58 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004041318324907621 ; Tue, 13 Apr 2004 18:32:49 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA06930; Tue, 13 Apr 2004 18:34:57 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma010087; Tue, 13 Apr 2004 13:05:39 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id EAA02145 for linac-eng-list; Tue, 13 Apr 2004 04:21:01 -0500 (CDT) Received: from lanna.orebroll.se (lanna.orebroll.se [194.103.185.216]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id EAA02141 for ; Tue, 13 Apr 2004 04:20:59 -0500 (CDT) Received: from storm.orebroll.se ([192.168.250.152]) by lanna.orebroll.se with Microsoft SMTPSVC(6.0.3790.0); Tue, 13 Apr 2004 11:20:41 +0200 Received: by storm.orebroll.se with Internet Mail Service (5.5.2653.19) id <23SL6QJ0>; Tue, 13 Apr 2004 11:20:27 +0200 Date: Tue, 13 Apr 2004 11:20:21 +0200 From: terence.kearey@orebroll.se Subject: RE: sf6 shelf life Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <959992E73874F24C846A9CEA66D10C283D1AC2@rouge.orebroll.se> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-OriginalArrivalTime: 13 Apr 2004 09:20:41.0505 (UTC) FILETIME=[97648910:01C42138] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 13 Apr 2004 11:20:21 +0200 From: terence.kearey@orebroll.se Subject: RE: sf6 shelf life Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-OriginalArrivalTime: 13 Apr 2004 09:20:41.0505 (UTC) FILETIME=[97648910:01C42138] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f I agree with Malcolm, SF6 is virtually an inert gas and as such will hardly degrade in storage. So as long as the bottle doesn't leak you can keep it as long as you like. Tel. -----Original Message----- From: White, Malcolm [mailto:Malcolm.White@ubht.swest.nhs.uk] Sent: den 13 april 2004 08:54 To: 'linac-eng@plato.aristotle.net' Subject: RE: sf6 shelf life >What is the shelf life of sf6? Some distrubuters quote 2 or >3years >which doesn't seem resonable. As far as I know there is no shelf life for SF6 as such. Several bottles here at Bristol have been on the machines for a number of years (possibly 5 or longer). Malcolm White  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HW400AK6BRH1X@hubbard.azu.nl>; Tue, 13 Apr 2004 18:46:34 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004041318461608407 ; Tue, 13 Apr 2004 18:46:16 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA12666; Tue, 13 Apr 2004 18:48:24 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma017824; Tue, 13 Apr 2004 15:04:43 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id GAA03551 for linac-eng-list; Tue, 13 Apr 2004 06:29:45 -0500 (CDT) Received: from 17RADLAPPC01 ([65.174.193.129]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id GAA03547 for ; Tue, 13 Apr 2004 06:29:43 -0500 (CDT) Date: Tue, 13 Apr 2004 07:29:07 -0400 From: Scott Mange Subject: RE: sf6 shelf life In-reply-to: <959992E73874F24C846A9CEA66D10C283D1AC2@rouge.orebroll.se> Sender: owner-linac-eng@plato.aristotle.net X-Sender: smange@mailhost.det.ameritech.net To: linac-eng@plato.aristotle.net Message-id: <5.1.0.14.2.20040413072751.00a9e270@mailhost.det.ameritech.net> MIME-version: 1.0 X-Mailer: QUALCOMM Windows Eudora Version 5.1 Content-type: MULTIPART/MIXED; BOUNDARY="Boundary_(ID_w6nTw5wOzb5H1YWcWEs0pQ)"; x-avg-checked=avg-ok-2A259A5 Precedence: bulk X-GCMulti: 1 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 13 Apr 2004 07:29:07 -0400 From: Scott Mange Subject: RE: sf6 shelf life In-reply-to: <959992E73874F24C846A9CEA66D10C283D1AC2@rouge.orebroll.se> Sender: owner-linac-eng@plato.aristotle.net X-Sender: smange@mailhost.det.ameritech.net To: linac-eng@plato.aristotle.net X-GCMulti: 1 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f --Boundary_(ID_w6nTw5wOzb5H1YWcWEs0pQ) Content-type: text/plain; format=flowed; charset=us-ascii; x-avg-checked=avg-ok-2A259A5 Content-transfer-encoding: 8bit Silly question, not being an engineer. Could the manufacturer be referring to the amount of time the SF6 is in the machine? Does it break down over time with the RF power going through it?? Scott At 05:20 AM 4/13/04, terence.kearey@orebroll.se wrote: >I agree with Malcolm, SF6 is virtually an inert gas and as such will hardly >degrade in storage. So as long as the bottle doesn't leak you can keep it as >long as you like. >Tel. --Boundary_(ID_w6nTw5wOzb5H1YWcWEs0pQ) Content-type: text/plain; x-avg-checked=avg-ok-2A259A5; x-avg=cert; charset=us-ascii Content-disposition: inline --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.656 / Virus Database: 421 - Release Date: 4/9/04 --Boundary_(ID_w6nTw5wOzb5H1YWcWEs0pQ)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HW4005J0NHQTB@hubbard.azu.nl>; Tue, 13 Apr 2004 22:56:55 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004041322564711174 ; Tue, 13 Apr 2004 22:56:47 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id WAA14950; Tue, 13 Apr 2004 22:58:56 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma010087; Tue, 13 Apr 2004 13:05:39 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id EAA02145 for linac-eng-list; Tue, 13 Apr 2004 04:21:01 -0500 (CDT) Received: from lanna.orebroll.se (lanna.orebroll.se [194.103.185.216]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id EAA02141 for ; Tue, 13 Apr 2004 04:20:59 -0500 (CDT) Received: from storm.orebroll.se ([192.168.250.152]) by lanna.orebroll.se with Microsoft SMTPSVC(6.0.3790.0); Tue, 13 Apr 2004 11:20:41 +0200 Received: by storm.orebroll.se with Internet Mail Service (5.5.2653.19) id <23SL6QJ0>; Tue, 13 Apr 2004 11:20:27 +0200 Date: Tue, 13 Apr 2004 11:20:21 +0200 From: terence.kearey@orebroll.se Subject: RE: sf6 shelf life Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <959992E73874F24C846A9CEA66D10C283D1AC2@rouge.orebroll.se> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-OriginalArrivalTime: 13 Apr 2004 09:20:41.0505 (UTC) FILETIME=[97648910:01C42138] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 13 Apr 2004 11:20:21 +0200 From: terence.kearey@orebroll.se Subject: RE: sf6 shelf life Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-OriginalArrivalTime: 13 Apr 2004 09:20:41.0505 (UTC) FILETIME=[97648910:01C42138] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f I agree with Malcolm, SF6 is virtually an inert gas and as such will hardly degrade in storage. So as long as the bottle doesn't leak you can keep it as long as you like. Tel. -----Original Message----- From: White, Malcolm [mailto:Malcolm.White@ubht.swest.nhs.uk] Sent: den 13 april 2004 08:54 To: 'linac-eng@plato.aristotle.net' Subject: RE: sf6 shelf life >What is the shelf life of sf6? Some distrubuters quote 2 or >3years >which doesn't seem resonable. As far as I know there is no shelf life for SF6 as such. Several bottles here at Bristol have been on the machines for a number of years (possibly 5 or longer). Malcolm White  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HW4005MSNX1WS@hubbard.azu.nl>; Tue, 13 Apr 2004 23:10:36 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004041323101611960 ; Tue, 13 Apr 2004 23:10:16 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id XAA22242; Tue, 13 Apr 2004 23:12:23 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma017824; Tue, 13 Apr 2004 15:04:43 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id GAA03551 for linac-eng-list; Tue, 13 Apr 2004 06:29:45 -0500 (CDT) Received: from 17RADLAPPC01 ([65.174.193.129]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id GAA03547 for ; Tue, 13 Apr 2004 06:29:43 -0500 (CDT) Date: Tue, 13 Apr 2004 07:29:07 -0400 From: Scott Mange Subject: RE: sf6 shelf life In-reply-to: <959992E73874F24C846A9CEA66D10C283D1AC2@rouge.orebroll.se> Sender: owner-linac-eng@plato.aristotle.net X-Sender: smange@mailhost.det.ameritech.net To: linac-eng@plato.aristotle.net Message-id: <5.1.0.14.2.20040413072751.00a9e270@mailhost.det.ameritech.net> MIME-version: 1.0 X-Mailer: QUALCOMM Windows Eudora Version 5.1 Content-type: MULTIPART/MIXED; BOUNDARY="Boundary_(ID_gnWRi+xEI/wKq1H4pjrUhw)"; x-avg-checked=avg-ok-2A259A5 Precedence: bulk X-GCMulti: 1 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 13 Apr 2004 07:29:07 -0400 From: Scott Mange Subject: RE: sf6 shelf life In-reply-to: <959992E73874F24C846A9CEA66D10C283D1AC2@rouge.orebroll.se> Sender: owner-linac-eng@plato.aristotle.net X-Sender: smange@mailhost.det.ameritech.net To: linac-eng@plato.aristotle.net X-GCMulti: 1 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f --Boundary_(ID_gnWRi+xEI/wKq1H4pjrUhw) Content-type: text/plain; format=flowed; charset=us-ascii; x-avg-checked=avg-ok-2A259A5 Content-transfer-encoding: 8bit Silly question, not being an engineer. Could the manufacturer be referring to the amount of time the SF6 is in the machine? Does it break down over time with the RF power going through it?? Scott At 05:20 AM 4/13/04, terence.kearey@orebroll.se wrote: >I agree with Malcolm, SF6 is virtually an inert gas and as such will hardly >degrade in storage. So as long as the bottle doesn't leak you can keep it as >long as you like. >Tel. --Boundary_(ID_gnWRi+xEI/wKq1H4pjrUhw) Content-type: text/plain; x-avg-checked=avg-ok-2A259A5; x-avg=cert; charset=us-ascii Content-disposition: inline --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.656 / Virus Database: 421 - Release Date: 4/9/04 --Boundary_(ID_gnWRi+xEI/wKq1H4pjrUhw)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HW4002EEZMYY3@hubbard.azu.nl>; Wed, 14 Apr 2004 03:21:14 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004041403210614539 ; Wed, 14 Apr 2004 03:21:06 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id DAA23394; Wed, 14 Apr 2004 03:23:14 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma010087; Tue, 13 Apr 2004 13:05:39 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id EAA02145 for linac-eng-list; Tue, 13 Apr 2004 04:21:01 -0500 (CDT) Received: from lanna.orebroll.se (lanna.orebroll.se [194.103.185.216]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id EAA02141 for ; Tue, 13 Apr 2004 04:20:59 -0500 (CDT) Received: from storm.orebroll.se ([192.168.250.152]) by lanna.orebroll.se with Microsoft SMTPSVC(6.0.3790.0); Tue, 13 Apr 2004 11:20:41 +0200 Received: by storm.orebroll.se with Internet Mail Service (5.5.2653.19) id <23SL6QJ0>; Tue, 13 Apr 2004 11:20:27 +0200 Date: Tue, 13 Apr 2004 11:20:21 +0200 From: terence.kearey@orebroll.se Subject: RE: sf6 shelf life Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <959992E73874F24C846A9CEA66D10C283D1AC2@rouge.orebroll.se> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-OriginalArrivalTime: 13 Apr 2004 09:20:41.0505 (UTC) FILETIME=[97648910:01C42138] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 13 Apr 2004 11:20:21 +0200 From: terence.kearey@orebroll.se Subject: RE: sf6 shelf life Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-OriginalArrivalTime: 13 Apr 2004 09:20:41.0505 (UTC) FILETIME=[97648910:01C42138] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f I agree with Malcolm, SF6 is virtually an inert gas and as such will hardly degrade in storage. So as long as the bottle doesn't leak you can keep it as long as you like. Tel. -----Original Message----- From: White, Malcolm [mailto:Malcolm.White@ubht.swest.nhs.uk] Sent: den 13 april 2004 08:54 To: 'linac-eng@plato.aristotle.net' Subject: RE: sf6 shelf life >What is the shelf life of sf6? Some distrubuters quote 2 or >3years >which doesn't seem resonable. As far as I know there is no shelf life for SF6 as such. Several bottles here at Bristol have been on the machines for a number of years (possibly 5 or longer). Malcolm White  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HW50040809ILS@hubbard.azu.nl>; Wed, 14 Apr 2004 03:35:07 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004041403344915326 ; Wed, 14 Apr 2004 03:34:49 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id DAA29820; Wed, 14 Apr 2004 03:36:57 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma017824; Tue, 13 Apr 2004 15:04:43 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id GAA03551 for linac-eng-list; Tue, 13 Apr 2004 06:29:45 -0500 (CDT) Received: from 17RADLAPPC01 ([65.174.193.129]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id GAA03547 for ; Tue, 13 Apr 2004 06:29:43 -0500 (CDT) Date: Tue, 13 Apr 2004 07:29:07 -0400 From: Scott Mange Subject: RE: sf6 shelf life In-reply-to: <959992E73874F24C846A9CEA66D10C283D1AC2@rouge.orebroll.se> Sender: owner-linac-eng@plato.aristotle.net X-Sender: smange@mailhost.det.ameritech.net To: linac-eng@plato.aristotle.net Message-id: <5.1.0.14.2.20040413072751.00a9e270@mailhost.det.ameritech.net> MIME-version: 1.0 X-Mailer: QUALCOMM Windows Eudora Version 5.1 Content-type: MULTIPART/MIXED; BOUNDARY="Boundary_(ID_y+n086gyUPpVue3zB+2dDQ)"; x-avg-checked=avg-ok-2A259A5 Precedence: bulk X-GCMulti: 1 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 13 Apr 2004 07:29:07 -0400 From: Scott Mange Subject: RE: sf6 shelf life In-reply-to: <959992E73874F24C846A9CEA66D10C283D1AC2@rouge.orebroll.se> Sender: owner-linac-eng@plato.aristotle.net X-Sender: smange@mailhost.det.ameritech.net To: linac-eng@plato.aristotle.net X-GCMulti: 1 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f --Boundary_(ID_y+n086gyUPpVue3zB+2dDQ) Content-type: text/plain; format=flowed; charset=us-ascii; x-avg-checked=avg-ok-2A259A5 Content-transfer-encoding: 8bit Silly question, not being an engineer. Could the manufacturer be referring to the amount of time the SF6 is in the machine? Does it break down over time with the RF power going through it?? Scott At 05:20 AM 4/13/04, terence.kearey@orebroll.se wrote: >I agree with Malcolm, SF6 is virtually an inert gas and as such will hardly >degrade in storage. So as long as the bottle doesn't leak you can keep it as >long as you like. >Tel. --Boundary_(ID_y+n086gyUPpVue3zB+2dDQ) Content-type: text/plain; x-avg-checked=avg-ok-2A259A5; x-avg=cert; charset=us-ascii Content-disposition: inline --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.656 / Virus Database: 421 - Release Date: 4/9/04 --Boundary_(ID_y+n086gyUPpVue3zB+2dDQ)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HW500LG5BYQIG@hubbard.azu.nl>; Wed, 14 Apr 2004 07:46:40 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004041407463217869 ; Wed, 14 Apr 2004 07:46:32 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id HAA02193; Wed, 14 Apr 2004 07:48:40 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma010087; Tue, 13 Apr 2004 13:05:39 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id EAA02145 for linac-eng-list; Tue, 13 Apr 2004 04:21:01 -0500 (CDT) Received: from lanna.orebroll.se (lanna.orebroll.se [194.103.185.216]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id EAA02141 for ; Tue, 13 Apr 2004 04:20:59 -0500 (CDT) Received: from storm.orebroll.se ([192.168.250.152]) by lanna.orebroll.se with Microsoft SMTPSVC(6.0.3790.0); Tue, 13 Apr 2004 11:20:41 +0200 Received: by storm.orebroll.se with Internet Mail Service (5.5.2653.19) id <23SL6QJ0>; Tue, 13 Apr 2004 11:20:27 +0200 Date: Tue, 13 Apr 2004 11:20:21 +0200 From: terence.kearey@orebroll.se Subject: RE: sf6 shelf life Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <959992E73874F24C846A9CEA66D10C283D1AC2@rouge.orebroll.se> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-OriginalArrivalTime: 13 Apr 2004 09:20:41.0505 (UTC) FILETIME=[97648910:01C42138] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 13 Apr 2004 11:20:21 +0200 From: terence.kearey@orebroll.se Subject: RE: sf6 shelf life Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-OriginalArrivalTime: 13 Apr 2004 09:20:41.0505 (UTC) FILETIME=[97648910:01C42138] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f I agree with Malcolm, SF6 is virtually an inert gas and as such will hardly degrade in storage. So as long as the bottle doesn't leak you can keep it as long as you like. Tel. -----Original Message----- From: White, Malcolm [mailto:Malcolm.White@ubht.swest.nhs.uk] Sent: den 13 april 2004 08:54 To: 'linac-eng@plato.aristotle.net' Subject: RE: sf6 shelf life >What is the shelf life of sf6? Some distrubuters quote 2 or >3years >which doesn't seem resonable. As far as I know there is no shelf life for SF6 as such. Several bottles here at Bristol have been on the machines for a number of years (possibly 5 or longer). Malcolm White  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HW500LRZCGTIG@hubbard.azu.nl>; Wed, 14 Apr 2004 08:00:48 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004041408001218655 ; Wed, 14 Apr 2004 08:00:12 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id IAA08927; Wed, 14 Apr 2004 08:02:21 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma017824; Tue, 13 Apr 2004 15:04:43 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id GAA03551 for linac-eng-list; Tue, 13 Apr 2004 06:29:45 -0500 (CDT) Received: from 17RADLAPPC01 ([65.174.193.129]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id GAA03547 for ; Tue, 13 Apr 2004 06:29:43 -0500 (CDT) Date: Tue, 13 Apr 2004 07:29:07 -0400 From: Scott Mange Subject: RE: sf6 shelf life In-reply-to: <959992E73874F24C846A9CEA66D10C283D1AC2@rouge.orebroll.se> Sender: owner-linac-eng@plato.aristotle.net X-Sender: smange@mailhost.det.ameritech.net To: linac-eng@plato.aristotle.net Message-id: <5.1.0.14.2.20040413072751.00a9e270@mailhost.det.ameritech.net> MIME-version: 1.0 X-Mailer: QUALCOMM Windows Eudora Version 5.1 Content-type: MULTIPART/MIXED; BOUNDARY="Boundary_(ID_EFBZ6i/WDm3/SoROz9eCag)"; x-avg-checked=avg-ok-2A259A5 Precedence: bulk X-GCMulti: 1 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 13 Apr 2004 07:29:07 -0400 From: Scott Mange Subject: RE: sf6 shelf life In-reply-to: <959992E73874F24C846A9CEA66D10C283D1AC2@rouge.orebroll.se> Sender: owner-linac-eng@plato.aristotle.net X-Sender: smange@mailhost.det.ameritech.net To: linac-eng@plato.aristotle.net X-GCMulti: 1 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f --Boundary_(ID_EFBZ6i/WDm3/SoROz9eCag) Content-type: text/plain; format=flowed; charset=us-ascii; x-avg-checked=avg-ok-2A259A5 Content-transfer-encoding: 8bit Silly question, not being an engineer. Could the manufacturer be referring to the amount of time the SF6 is in the machine? Does it break down over time with the RF power going through it?? Scott At 05:20 AM 4/13/04, terence.kearey@orebroll.se wrote: >I agree with Malcolm, SF6 is virtually an inert gas and as such will hardly >degrade in storage. So as long as the bottle doesn't leak you can keep it as >long as you like. >Tel. --Boundary_(ID_EFBZ6i/WDm3/SoROz9eCag) Content-type: text/plain; x-avg-checked=avg-ok-2A259A5; x-avg=cert; charset=us-ascii Content-disposition: inline --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.656 / Virus Database: 421 - Release Date: 4/9/04 --Boundary_(ID_EFBZ6i/WDm3/SoROz9eCag)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HW6003ME55HRP@hubbard.azu.nl>; Wed, 14 Apr 2004 18:15:40 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004041418152929439 ; Wed, 14 Apr 2004 18:15:29 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA05777; Wed, 14 Apr 2004 18:15:29 +0200 (MET DST) Received: from mail2.uu.nl(131.211.16.76) by armstrong.azu.nl via smap (V1.3) id xma021557; Wed, 14 Apr 2004 17:22:52 +0200 Received: from localhost (mail2 [127.0.0.1]) by mail2.uu.nl (Postfix) with ESMTP id 076AEC2F0; Wed, 14 Apr 2004 15:36:24 +0200 (CEST) Received: from mail2.uu.nl ([127.0.0.1]) by localhost (mail2 [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 08826-05; Wed, 14 Apr 2004 15:36:23 +0200 (CEST) Received: by mail2.uu.nl (Postfix, from userid 300) id C8AE6C2D3; Wed, 14 Apr 2004 16:27:23 +0200 (CEST) Received: from localhost (mail2 [127.0.0.1]) by mail2.uu.nl (Postfix) with ESMTP id 97CECC2F0; Wed, 14 Apr 2004 13:21:59 +0200 (CEST) Received: from mail2.uu.nl ([127.0.0.1]) by localhost (mail2 [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 16509-09; Wed, 14 Apr 2004 13:21:59 +0200 (CEST) Received: from plato.aristotle.net (plato.aristotle.net [206.66.224.2]) by mail2.uu.nl (Postfix) with ESMTP id 01CB0C29C; Wed, 14 Apr 2004 13:21:58 +0200 (CEST) Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id EAA27003 for linac-eng-list; Wed, 14 Apr 2004 04:10:39 -0500 (CDT) Received: from intfw1.phci.org (user.phci.org [207.67.109.70]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id EAA26999 for ; Wed, 14 Apr 2004 04:10:38 -0500 (CDT) Received: from intfw1.phci.org (root@localhost) by intfw1.phci.org with ESMTP id i3E9A85x008555 for ; Wed, 14 Apr 2004 04:10:08 -0500 (CDT) Received: from zixvpm00.phci.org (zixvpm01.phci.org [172.20.3.21]) by intfw1.phci.org with ESMTP id i3E9A7To008552 for ; Wed, 14 Apr 2004 04:10:07 -0500 (CDT) Received: from zixvpm01.phci.org (ZixVPM [127.0.0.1]) by Outbound.phci.org (Proprietary) with ESMTP id B86B21A4090 for ; Wed, 14 Apr 2004 04:10:07 -0500 (CDT) Received: from smtpscan.phci.org (smtpscan.phci.org [172.20.3.10]) by zixvpm00.phci.org (Proprietary) with SMTP id 3FAA31A0054; Wed, 14 Apr 2004 04:10:06 -0500 (CDT) Received: from wmhmail1.phci.org ([IP=10.1.1.28]) by eSafe SMTP Relay 1081856419; Wed Apr 14 04:29:27 2004 Received: by wmhmail1.phci.org with Internet Mail Service (5.5.2657.72) id <234GX26P>; Wed, 14 Apr 2004 04:10:05 -0500 Date: Wed, 14 Apr 2004 04:09:55 -0500 From: "Williams, Rod" Subject: RE: Radiation/Light Field Coincidence on Varian 1800 Sender: owner-linac-eng@plato.aristotle.net To: 'Scott Mange' , linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_UiGrAOKLhgredqLX8/JVYg)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 14 Apr 2004 04:09:55 -0500 From: "Williams, Rod" Subject: RE: Radiation/Light Field Coincidence on Varian 1800 Sender: owner-linac-eng@plato.aristotle.net To: 'Scott Mange' , linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_UiGrAOKLhgredqLX8/JVYg) Content-type: text/plain; charset=iso-8859-1 Hi Scott Look in your systems manual, it should have the Field Light Adjustment Procedures. No you don't need a water scanner. Just x-ray film pack and a densitometer. -----Original Message----- From: Scott Mange [mailto:smange@ameritech.net] Sent: Tuesday, April 13, 2004 4:11 PM To: linac-eng@plato.aristotle.net Subject: Radiation/Light Field Coincidence on Varian 1800 Gentlemen (and Ladies), I'm not an engineer so please have patience with me when answering this question. PROBLEM: Our light field/radiation are not coincident on one side and I'd like to know if adjusting it is a simple thing or do I need the water scanner? SITUATION: Varian clinac 1800 serial 157. Setting PSA to 100 SSD, jaw size approx. 15x15, ready-pack film taped to the table. I'd mark the light field edges with a pen and using a ruler "connect the dots" so I can see the line when I develop the film. Then, expose the film and develop. With the gantry at 180 (vertical pointing down) and the collimator at 180 (accessory opening towards the machine), the light field/radiation coincidence is good on 3 jaws. The radiation field is "inside" the line I scribed on the left hand jaw as I stand facing the gantry. It's inside about 3mm. Same set-up but rotate the collimator to 90 so the accessory opening is to the left as I stand facing the gantry. The radiation field is again "inside" the scribed line about 3mm but this time on the jaw nearest me as I stand facing the gantry. I now know the effect is real and moves with the collimator head. Question: Does fixing this require getting the scanner out? My sincere thanks to you in advance. Regards, Scott Mange This information is confidential and intended solely for the use of the individual or entity to whom it is addressed. If you have received this email in error please notify the sender or our Customer Support Center at (262) 928-2777. We have scanned this email and its attachments for malicious content. However, the recipient should check this email and any attachments for the presence of viruses. ProHealth Care accepts no liability for any damage caused by any virus transmitted by this email. --Boundary_(ID_UiGrAOKLhgredqLX8/JVYg) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: quoted-printable RE: Radiation/Light Field Coincidence on Varian 1800

Hi Scott

Look in your systems manual, it should have the Field L= ight Adjustment Procedures. No you don't need a water scanner. Just x-ray= film pack and a densitometer.

-----Original Message-----
From: Scott Mange [mailto:smange@ameritech.net]
Sent: Tuesday, April 13, 2004 4:11 PM
To: linac-eng@plato.aristotle.net
Subject: Radiation/Light Field Coincidence on Varian 1= 800


Gentlemen (and Ladies),

I'm not an engineer so please have patience with me whe= n answering this
question.

PROBLEM:
Our light field/radiation are not coincident on one si= de and I'd like to
know if adjusting it is a simple thing or do I need th= e water scanner?

SITUATION:
Varian clinac 1800 serial 157.  Setting PSA to 10= 0 SSD, jaw size approx.
15x15, ready-pack film taped to the table.  I'd m= ark the light field edges
with a pen and using a ruler "connect the dots&qu= ot; so I can see the line when
I develop the film.  Then, expose the film and de= velop.

With the gantry at 180 (vertical pointing down) and the= collimator at 180
(accessory opening towards the machine), the light fie= ld/radiation
coincidence is good on 3 jaws.  The radiation fie= ld is "inside" the line I
scribed on the left hand jaw as I stand facing the gan= try.  It's inside
about 3mm.

Same set-up but rotate the collimator to 90 so the acce= ssory opening is to
the left as I stand facing the gantry.  The radia= tion field is again
"inside" the scribed line about 3mm but this= time on the jaw nearest me as
I stand facing the gantry.

I now know the effect is real and moves with the collim= ator head.

Question:
Does fixing this require getting the scanner out?

My sincere thanks to you in advance.

Regards,
Scott Mange


This information is confidential and intended solely fo= r the use of the individual or entity to whom it is addressed.
If you have received this email in error please notify= the sender or our Customer Support Center at (262) 928-2777.

We have scanned this email and its attachments for mali= cious content.
However, the recipient should check this email and any= attachments for the presence of viruses.
ProHealth Care accepts no liability for any damage cau= sed by any virus transmitted by this email.

--Boundary_(ID_UiGrAOKLhgredqLX8/JVYg)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HW600E7HEJOH2@hubbard.azu.nl>; Wed, 14 Apr 2004 21:39:13 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004041421390600032 ; Wed, 14 Apr 2004 21:39:06 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id VAA27799; Wed, 14 Apr 2004 21:39:05 +0200 (MET DST) Received: from mail2.uu.nl(131.211.16.76) by armstrong.azu.nl via smap (V1.3) id xma003503; Wed, 14 Apr 2004 18:08:30 +0200 Received: from localhost (mail2 [127.0.0.1]) by mail2.uu.nl (Postfix) with ESMTP id 2A213C06A; Wed, 14 Apr 2004 15:34:54 +0200 (CEST) Received: from mail2.uu.nl ([127.0.0.1]) by localhost (mail2 [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 07962-06; Wed, 14 Apr 2004 15:34:53 +0200 (CEST) Received: by mail2.uu.nl (Postfix, from userid 300) id E175FBEF3; Wed, 14 Apr 2004 15:53:51 +0200 (CEST) Received: from localhost (mail2 [127.0.0.1]) by mail2.uu.nl (Postfix) with ESMTP id 306DCB9F3; Wed, 14 Apr 2004 01:18:13 +0200 (CEST) Received: from mail2.uu.nl ([127.0.0.1]) by localhost (mail2 [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 21745-09; Wed, 14 Apr 2004 01:18:13 +0200 (CEST) Received: from plato.aristotle.net (plato.aristotle.net [206.66.224.2]) by mail2.uu.nl (Postfix) with ESMTP id 7943FB9F0; Wed, 14 Apr 2004 01:18:11 +0200 (CEST) Received: by plato.aristotle.net (8.9.0/8.9.0) id QAA19916 for linac-eng-list; Tue, 13 Apr 2004 16:22:19 -0500 (CDT) Received: from 17RADLAPPC01 ([65.174.193.129]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id QAA19912 for ; Tue, 13 Apr 2004 16:22:17 -0500 (CDT) Date: Tue, 13 Apr 2004 17:10:54 -0400 From: Scott Mange Subject: Radiation/Light Field Coincidence on Varian 1800 Sender: owner-linac-eng@plato.aristotle.net X-Sender: smange@mailhost.det.ameritech.net (Unverified) To: linac-eng@plato.aristotle.net Message-id: <5.1.0.14.2.20040413170003.00a5ca20@mailhost.det.ameritech.net> MIME-version: 1.0 X-Mailer: QUALCOMM Windows Eudora Version 5.1 Content-type: MULTIPART/MIXED; BOUNDARY="Boundary_(ID_lUeaqEa+dfSQNSFxyOZ7aw)"; x-avg-checked=avg-ok-7BE43A5 Precedence: bulk X-GCMulti: 1 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 13 Apr 2004 17:10:54 -0400 From: Scott Mange Subject: Radiation/Light Field Coincidence on Varian 1800 Sender: owner-linac-eng@plato.aristotle.net X-Sender: smange@mailhost.det.ameritech.net (Unverified) To: linac-eng@plato.aristotle.net X-GCMulti: 1 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f --Boundary_(ID_lUeaqEa+dfSQNSFxyOZ7aw) Content-type: text/plain; format=flowed; charset=us-ascii; x-avg-checked=avg-ok-7BE43A5 Content-transfer-encoding: quoted-printable Gentlemen (and Ladies), I'm not an engineer so please have patience with me when answering this=20 question. PROBLEM: Our light field/radiation are not coincident on one side and I'd like to=20 know if adjusting it is a simple thing or do I need the water scanner? SITUATION: Varian clinac 1800 serial 157. Setting PSA to 100 SSD, jaw size approx.=20 15x15, ready-pack film taped to the table. I'd mark the light field edge= s=20 with a pen and using a ruler "connect the dots" so I can see the line whe= n=20 I develop the film. Then, expose the film and develop. With the gantry at 180 (vertical pointing down) and the collimator at 180= =20 (accessory opening towards the machine), the light field/radiation=20 coincidence is good on 3 jaws. The radiation field is "inside" the line = I=20 scribed on the left hand jaw as I stand facing the gantry. It's inside=20 about 3mm. Same set-up but rotate the collimator to 90 so the accessory opening is t= o=20 the left as I stand facing the gantry. The radiation field is again=20 "inside" the scribed line about 3mm but this time on the jaw nearest me a= s=20 I stand facing the gantry. I now know the effect is real and moves with the collimator head. Question: Does fixing this require getting the scanner out? My sincere thanks to you in advance. Regards, Scott Mange --Boundary_(ID_lUeaqEa+dfSQNSFxyOZ7aw) Content-type: text/plain; x-avg-checked=avg-ok-7BE43A5; x-avg=cert; charset=us-ascii Content-disposition: inline --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.657 / Virus Database: 422 - Release Date: 4/13/04 --Boundary_(ID_lUeaqEa+dfSQNSFxyOZ7aw)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HW600F61FR1TH@hubbard.azu.nl>; Wed, 14 Apr 2004 22:04:30 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004041412284923227 ; Wed, 14 Apr 2004 12:28:49 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id MAA15043; Wed, 14 Apr 2004 12:30:58 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma017824; Tue, 13 Apr 2004 15:04:43 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id GAA03551 for linac-eng-list; Tue, 13 Apr 2004 06:29:45 -0500 (CDT) Received: from 17RADLAPPC01 ([65.174.193.129]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id GAA03547 for ; Tue, 13 Apr 2004 06:29:43 -0500 (CDT) Date: Tue, 13 Apr 2004 07:29:07 -0400 From: Scott Mange Subject: RE: sf6 shelf life In-reply-to: <959992E73874F24C846A9CEA66D10C283D1AC2@rouge.orebroll.se> Sender: owner-linac-eng@plato.aristotle.net X-Sender: smange@mailhost.det.ameritech.net To: linac-eng@plato.aristotle.net Message-id: <5.1.0.14.2.20040413072751.00a9e270@mailhost.det.ameritech.net> MIME-version: 1.0 X-Mailer: QUALCOMM Windows Eudora Version 5.1 Content-type: MULTIPART/MIXED; BOUNDARY="Boundary_(ID_TXeJlrdRk/5QDn8zG0DsmQ)"; x-avg-checked=avg-ok-2A259A5 Precedence: bulk X-GCMulti: 1 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 13 Apr 2004 07:29:07 -0400 From: Scott Mange Subject: RE: sf6 shelf life In-reply-to: <959992E73874F24C846A9CEA66D10C283D1AC2@rouge.orebroll.se> Sender: owner-linac-eng@plato.aristotle.net X-Sender: smange@mailhost.det.ameritech.net To: linac-eng@plato.aristotle.net X-GCMulti: 1 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f --Boundary_(ID_TXeJlrdRk/5QDn8zG0DsmQ) Content-type: text/plain; format=flowed; charset=us-ascii; x-avg-checked=avg-ok-2A259A5 Content-transfer-encoding: 8bit Silly question, not being an engineer. Could the manufacturer be referring to the amount of time the SF6 is in the machine? Does it break down over time with the RF power going through it?? Scott At 05:20 AM 4/13/04, terence.kearey@orebroll.se wrote: >I agree with Malcolm, SF6 is virtually an inert gas and as such will hardly >degrade in storage. So as long as the bottle doesn't leak you can keep it as >long as you like. >Tel. --Boundary_(ID_TXeJlrdRk/5QDn8zG0DsmQ) Content-type: text/plain; x-avg-checked=avg-ok-2A259A5; x-avg=cert; charset=us-ascii Content-disposition: inline --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.656 / Virus Database: 421 - Release Date: 4/9/04 --Boundary_(ID_TXeJlrdRk/5QDn8zG0DsmQ)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HW600J0PHQYPS@hubbard.azu.nl>; Wed, 14 Apr 2004 22:47:38 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004041412151821837 ; Wed, 14 Apr 2004 12:15:19 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id MAA07124; Wed, 14 Apr 2004 12:17:26 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma010087; Tue, 13 Apr 2004 13:05:39 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id EAA02145 for linac-eng-list; Tue, 13 Apr 2004 04:21:01 -0500 (CDT) Received: from lanna.orebroll.se (lanna.orebroll.se [194.103.185.216]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id EAA02141 for ; Tue, 13 Apr 2004 04:20:59 -0500 (CDT) Received: from storm.orebroll.se ([192.168.250.152]) by lanna.orebroll.se with Microsoft SMTPSVC(6.0.3790.0); Tue, 13 Apr 2004 11:20:41 +0200 Received: by storm.orebroll.se with Internet Mail Service (5.5.2653.19) id <23SL6QJ0>; Tue, 13 Apr 2004 11:20:27 +0200 Date: Tue, 13 Apr 2004 11:20:21 +0200 From: terence.kearey@orebroll.se Subject: RE: sf6 shelf life Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <959992E73874F24C846A9CEA66D10C283D1AC2@rouge.orebroll.se> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-OriginalArrivalTime: 13 Apr 2004 09:20:41.0505 (UTC) FILETIME=[97648910:01C42138] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 13 Apr 2004 11:20:21 +0200 From: terence.kearey@orebroll.se Subject: RE: sf6 shelf life Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-OriginalArrivalTime: 13 Apr 2004 09:20:41.0505 (UTC) FILETIME=[97648910:01C42138] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f I agree with Malcolm, SF6 is virtually an inert gas and as such will hardly degrade in storage. So as long as the bottle doesn't leak you can keep it as long as you like. Tel. -----Original Message----- From: White, Malcolm [mailto:Malcolm.White@ubht.swest.nhs.uk] Sent: den 13 april 2004 08:54 To: 'linac-eng@plato.aristotle.net' Subject: RE: sf6 shelf life >What is the shelf life of sf6? Some distrubuters quote 2 or >3years >which doesn't seem resonable. As far as I know there is no shelf life for SF6 as such. Several bottles here at Bristol have been on the machines for a number of years (possibly 5 or longer). Malcolm White  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HW6000IDK0TWZ@hubbard.azu.nl>; Wed, 14 Apr 2004 23:37:10 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004041423370201987 ; Wed, 14 Apr 2004 23:37:02 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id XAA17244; Wed, 14 Apr 2004 23:37:01 +0200 (MET DST) Received: from mail.uu.nl(131.211.16.75) by armstrong.azu.nl via smap (V1.3) id xma006949; Wed, 14 Apr 2004 18:20:35 +0200 Received: from localhost (localhost.localdomain [127.0.0.1]) by mail.uu.nl (Postfix) with ESMTP id 8CDB754D18; Wed, 14 Apr 2004 15:33:29 +0200 (CEST) Received: from mail.uu.nl ([127.0.0.1]) by localhost (mail.uu.nl [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 17547-06; Wed, 14 Apr 2004 15:33:28 +0200 (CEST) Received: by mail.uu.nl (Postfix, from userid 300) id 312155517C; Wed, 14 Apr 2004 16:26:05 +0200 (CEST) Received: from localhost (localhost.localdomain [127.0.0.1]) by mail.uu.nl (Postfix) with ESMTP id 22453554E3; Wed, 14 Apr 2004 14:10:43 +0200 (CEST) Received: from mail.uu.nl ([127.0.0.1]) by localhost (mail.uu.nl [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 31486-04; Wed, 14 Apr 2004 14:10:42 +0200 (CEST) Received: from plato.aristotle.net (plato.aristotle.net [206.66.224.2]) by mail.uu.nl (Postfix) with ESMTP id 4B393554D4; Wed, 14 Apr 2004 14:10:11 +0200 (CEST) Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id FAA27657 for linac-eng-list; Wed, 14 Apr 2004 05:11:16 -0500 (CDT) Received: from mail22.nhs.uk (mail22.nhs.uk [62.6.139.218]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id FAA27653 for ; Wed, 14 Apr 2004 05:11:15 -0500 (CDT) Received: from [10.191.254.3] (helo=relayint2.nhs.uk) by mail22.nhs.uk with esmtp (MTC MTA) id 1BDhLw-00015b-9o for linac-eng@plato.aristotle.net; Wed, 14 Apr 2004 11:10:44 +0100 Received: from relay.nhs.uk (194.62.42.141) by relayint2.nhs.uk (Syntegra-I2 7.0.008) id 4039DF7100D59C4C for linac-eng@plato.aristotle.net; Wed, 14 Apr 2004 11:10:44 +0100 Received: from mercury.University-b.wmids.nhs.uk (193.240.116.176) by relay.nhs.uk (Syntegra-1 7.0.008) (authenticated as smtp_uhb_nhs_uk@es2002.nhs.uk) id 407C63A8000271A6; Wed, 14 Apr 2004 11:10:44 +0100 Received: by MERCURY with Internet Mail Service (5.5.2653.19) id <26R8FBG1>; Wed, 14 Apr 2004 11:10:42 +0100 Date: Wed, 14 Apr 2004 11:07:26 +0100 From: Graham Chalmers Subject: RE: Radiation/Light Field Coincidence on Varian 1800 Sender: owner-linac-eng@plato.aristotle.net To: 'Scott Mange' , linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_aFlSw2TruGWhoiTEiqHFrg)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 14 Apr 2004 11:07:26 +0100 From: Graham Chalmers Subject: RE: Radiation/Light Field Coincidence on Varian 1800 Sender: owner-linac-eng@plato.aristotle.net To: 'Scott Mange' , linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_aFlSw2TruGWhoiTEiqHFrg) Content-type: text/plain; CHARSET=US-ASCII Dear Scott This appears to be a chicken and egg situation. You need to deduce whether it is a light or radiation field asymmetry. Is the light or radiation size correct? What I suggest is that you perform a film with one set of jaws half blocked. E.g. Put your film on the couch top. If you are concerned about a particular jaw then set your 15cm symmetrical field in that axis. Set the opposite pair of jaws to be a 7.5cm field with one jaw on the central axis i.e. half blocked. Mark the light field as you can see it and irradiate. Rotate the collimators by 180 degrees and remark and re-irradiate. You will then have a film with the crosswire centre marked and light field edges. The final image is then of the 2 half blocked fields. If the radiation field is symmetrical about the crosswire position (this should also be checked for minimal rotation with collimator rotation) then the radiation field edges should appear continuous in the 15cm set direction and likewise the light. If you see the radiation as 'stepped' then you have a jaw asymmetry or possible beam symmetry problem. If the radiation is fixed and the light field moves then the light can be corrected. With best wishes Graham Chalmers Graham Chalmers Radiotherapy Physics University Hospital Birmingham NHS Trust Birmingham B15 2TH 0121-627-2266 DISCLAIMER: This e-mail contains proprietary information some or all of which may be confidential or legally privileged. It is for the exclusive use of the intended recipient(s) only. If an addressing or transmission error has misdirected this e-mail and you are not the intended recipient(s), please notify the author by replying to this e-mail. If you are not the intended recipient you must not use, disclose, distribute, copy, print, or rely on this e-mail, as this may be unlawful.-----Original Message----- From: Scott Mange [mailto:smange@ameritech.net] Sent: 13 April 2004 22:11 To: linac-eng@plato.aristotle.net Subject: Radiation/Light Field Coincidence on Varian 1800 Gentlemen (and Ladies), I'm not an engineer so please have patience with me when answering this question. PROBLEM: Our light field/radiation are not coincident on one side and I'd like to know if adjusting it is a simple thing or do I need the water scanner? SITUATION: Varian clinac 1800 serial 157. Setting PSA to 100 SSD, jaw size approx. 15x15, ready-pack film taped to the table. I'd mark the light field edges with a pen and using a ruler "connect the dots" so I can see the line when I develop the film. Then, expose the film and develop. With the gantry at 180 (vertical pointing down) and the collimator at 180 (accessory opening towards the machine), the light field/radiation coincidence is good on 3 jaws. The radiation field is "inside" the line I scribed on the left hand jaw as I stand facing the gantry. It's inside about 3mm. Same set-up but rotate the collimator to 90 so the accessory opening is to the left as I stand facing the gantry. The radiation field is again "inside" the scribed line about 3mm but this time on the jaw nearest me as I stand facing the gantry. I now know the effect is real and moves with the collimator head. Question: Does fixing this require getting the scanner out? My sincere thanks to you in advance. Regards, Scott Mange DISCLAIMER: This e-mail contains proprietary information some or all of which may be confidential or legally privileged. It is for the exclusive use of the intended recipient(s) only. If an addressing or transmission error has misdirected this e-mail and you are not the intended recipient(s), please notify the author by replying to this e-mail. If you are not the intended recipient you must not use, disclose, distribute, copy, print, or rely on this e-mail, as this may be unlawful. --Boundary_(ID_aFlSw2TruGWhoiTEiqHFrg) Content-type: text/html Content-transfer-encoding: quoted-printable RE: Radiation/Light Field Coincidence on Varian 1800

Dear Scott

This appears to be a chicken and egg situation. You = need to deduce whether it is a light or radiation field asymmetry. Is = the light or radiation size correct?

What I suggest is that you perform a film with one = set of jaws half blocked.

E.g.

Put your film on the couch top. If you are concerned = about a particular jaw then set your 15cm symmetrical field in that = axis. Set the opposite pair of jaws to be a 7.5cm field with one jaw on = the central axis i.e. half blocked. Mark the light field as you can see = it and irradiate. Rotate the collimators by 180 degrees and remark and = re-irradiate. You will then have a film with the crosswire centre = marked and light field edges. The final image is then of the 2 half = blocked fields. If the radiation field is symmetrical about the = crosswire position (this should also be checked for minimal rotation = with collimator rotation) then the radiation field edges should appear = continuous in the 15cm set direction and likewise the light. If you see = the radiation as 'stepped' then you have a jaw asymmetry or possible = beam symmetry problem. If the radiation is fixed and the light field = moves then the light can be corrected.


With best wishes
 
Graham Chalmers
 
 

Graham Chalmers

Radiotherapy Physics

University Hospital Birmingham NHS Trust

Birmingham B15 2TH

0121-627-2266

 
 
 
 
DISCLAIMER: This e-mail contains proprietary = information some or all of which may be confidential or legally = privileged. It is for the exclusive use of the intended recipient(s) = only. If an addressing or transmission error has misdirected this = e-mail and you are not the intended recipient(s), please notify the = author by replying to this e-mail. If you are not the intended = recipient you must not use, disclose, distribute, copy, print, or rely = on this e-mail, as this may be unlawful.-----Original = Message-----

From: Scott Mange [mailto:smange@ameritech.net] =
Sent: 13 April 2004 22:11
To: linac-eng@plato.aristotle.net
Subject: Radiation/Light Field Coincidence on Varian = 1800

Gentlemen (and Ladies),

I'm not an engineer so please have patience with me = when answering this
question.

PROBLEM:
Our light field/radiation are not coincident on one = side and I'd like to
know if adjusting it is a simple thing or do I need = the water scanner?

SITUATION:
Varian clinac 1800 serial 157.  Setting PSA to = 100 SSD, jaw size approx.
15x15, ready-pack film taped to the table.  I'd = mark the light field edges
with a pen and using a ruler "connect the = dots" so I can see the line when
I develop the film.  Then, expose the film and = develop.

With the gantry at 180 (vertical pointing down) and = the collimator at 180
(accessory opening towards the machine), the light = field/radiation
coincidence is good on 3 jaws.  The radiation = field is "inside" the line I
scribed on the left hand jaw as I stand facing the = gantry.  It's inside
about 3mm.

Same set-up but rotate the collimator to 90 so the = accessory opening is to
the left as I stand facing the gantry.  The = radiation field is again
"inside" the scribed line about 3mm but = this time on the jaw nearest me as
I stand facing the gantry.

I now know the effect is real and moves with the = collimator head.

Question:
Does fixing this require getting the scanner = out?

My sincere thanks to you in advance.

Regards,
Scott Mange
DISCLAIMER: This e-mail contains proprietary = information some or all of which may be confidential or legally = privileged. It is for the exclusive use of the intended recipient(s) = only. If an addressing or transmission error has misdirected this = e-mail and you are not the intended recipient(s), please notify the = author by replying to this e-mail. If you are not the intended = recipient you must not use, disclose, distribute, copy, print, or rely = on this e-mail, as this may be unlawful.

--Boundary_(ID_aFlSw2TruGWhoiTEiqHFrg)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HW6000EDLINWZ@hubbard.azu.nl>; Thu, 15 Apr 2004 00:09:34 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004041500092202665 ; Thu, 15 Apr 2004 00:09:22 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id AAA00572; Thu, 15 Apr 2004 00:09:22 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma003048; Wed, 14 Apr 2004 18:07:07 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id IAA29838 for linac-eng-list; Wed, 14 Apr 2004 08:59:25 -0500 (CDT) Received: from titan.lhsc.on.ca (titan.lhsc.on.ca [142.158.2.20]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id IAA29834 for ; Wed, 14 Apr 2004 08:59:23 -0500 (CDT) Received: from mail.lrcc.on.ca (mail.lrcc.on.ca [142.158.120.242]) by titan.lhsc.on.ca (8.11.7p1+Sun/8.11.7) with SMTP id i3EDwoW23750 for ; Wed, 14 Apr 2004 09:58:51 -0400 (EDT) Received: by mail.lrcc.on.ca(Lotus SMTP MTA v4.6.7 (934.1 12-30-1999)) id 85256E76.004CC264 ; Wed, 14 Apr 2004 09:58:24 -0400 Date: Wed, 14 Apr 2004 09:58:18 -0400 From: Randy.McVittie@lrcc.on.ca Subject: Varian Position Readout Calibration Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <85256E76.004CC071.00@mail.lrcc.on.ca> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Content-disposition: inline Precedence: bulk X-Lotus-FromDomain: LRCC X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 14 Apr 2004 09:58:18 -0400 From: Randy.McVittie@lrcc.on.ca Subject: Varian Position Readout Calibration Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Content-disposition: inline X-Lotus-FromDomain: LRCC X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f We have been having HWFA on UJ1 on one of our machines and we have changed everything. We have usually found that a problem exists with the SPRO assembly, the bushing gets sticky and the SPRO pot doesn't move freely. I don't know why it has been the SPRO on UJ1 I just know that it has been taken apart and cleaned on 3 or 4 of our machines. I am glad it has only been a problem once on UJ2 since that requires removing the lower jaw assembly to access it. I am wondering if anyone knows if the Primary and Secondary pots on a dynamic axis have to be aligned closely together before the axis is calibrated. Is there a spec like they should be within 100 A/D counts or something like that. Does anyone know how Varian comes up with the calibration deviation number? I know that the data points are equal amounts apart you will get a deviation of 0.00, if a data point is off a couple of counts the deviation will be 0.707. I keep seeing numbers like 0.707 ( 1 over sqrt(2)) 0.866 (1 over sqrt(3)) 1.414 (sqrt(2)) etc Everytime I do a calibration I try to figure out just what the formula they use is. When I was on course (years ago) we were told to try to get the deviation down to 1.00 or less. Is this still the case? Randy  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HW600CJXVVW1P@hubbard.azu.nl>; Thu, 15 Apr 2004 03:52:52 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004041503524409627 ; Thu, 15 Apr 2004 03:52:44 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id DAA00487; Thu, 15 Apr 2004 03:52:44 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma004149; Wed, 14 Apr 2004 19:32:03 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id KAA01116 for linac-eng-list; Wed, 14 Apr 2004 10:41:25 -0500 (CDT) Received: from PHSEXCHICO.MGH.HARVARD.EDU (phsexchico.mgh.harvard.edu [132.183.126.50]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id KAA01112 for ; Wed, 14 Apr 2004 10:41:24 -0500 (CDT) Received: by phsexchico.mgh.harvard.edu with Internet Mail Service (5.5.2657.72) id <2NG138N8>; Wed, 14 Apr 2004 11:40:23 -0400 Date: Wed, 14 Apr 2004 11:40:18 -0400 From: "Maddox, Buford J" Subject: RE: Radiation/Light Field Coincidence on Varian 1800 Sender: owner-linac-eng@plato.aristotle.net To: 'Scott Mange' , linac-eng@plato.aristotle.net Message-id: <36298D09ED1AD311B4DC0008C7F4D4E1114663F1@phsexch6.partners.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 14 Apr 2004 11:40:18 -0400 From: "Maddox, Buford J" Subject: RE: Radiation/Light Field Coincidence on Varian 1800 Sender: owner-linac-eng@plato.aristotle.net To: 'Scott Mange' , linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f It is not obvious how you can have the coincidence ok on three jaws but not the 4th. I have seen this in only two cases: one, the mirror was too short on one side on a homemade machine. The other was a light bulb offset from the pinhole that allowed its light to exit to the mirror. Basically the same cause in both cases, clipping of the light on one side. It sounds like your coincidence is fine, but you have a clipping problem. Jerry -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Scott Mange Sent: Tuesday, April 13, 2004 5:11 PM To: linac-eng@plato.aristotle.net Subject: Radiation/Light Field Coincidence on Varian 1800 Gentlemen (and Ladies), I'm not an engineer so please have patience with me when answering this question. PROBLEM: Our light field/radiation are not coincident on one side and I'd like to know if adjusting it is a simple thing or do I need the water scanner? SITUATION: Varian clinac 1800 serial 157. Setting PSA to 100 SSD, jaw size approx. 15x15, ready-pack film taped to the table. I'd mark the light field edges with a pen and using a ruler "connect the dots" so I can see the line when I develop the film. Then, expose the film and develop. With the gantry at 180 (vertical pointing down) and the collimator at 180 (accessory opening towards the machine), the light field/radiation coincidence is good on 3 jaws. The radiation field is "inside" the line I scribed on the left hand jaw as I stand facing the gantry. It's inside about 3mm. Same set-up but rotate the collimator to 90 so the accessory opening is to the left as I stand facing the gantry. The radiation field is again "inside" the scribed line about 3mm but this time on the jaw nearest me as I stand facing the gantry. I now know the effect is real and moves with the collimator head. Question: Does fixing this require getting the scanner out? My sincere thanks to you in advance. Regards, Scott Mange  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HW600FU6VV7HY@hubbard.azu.nl>; Thu, 15 Apr 2004 03:52:52 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004041503524309626 ; Thu, 15 Apr 2004 03:52:43 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id DAA00484; Thu, 15 Apr 2004 03:52:43 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma004148; Wed, 14 Apr 2004 19:32:02 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id KAA01056 for linac-eng-list; Wed, 14 Apr 2004 10:35:02 -0500 (CDT) Received: from PHSEXCHICO2.Partners.org (phsexchico2.partners.org [170.223.254.20]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id KAA01052 for ; Wed, 14 Apr 2004 10:35:01 -0500 (CDT) Received: by phsexchico2.partners.org with Internet Mail Service (5.5.2657.72) id <2DPKKAMV>; Wed, 14 Apr 2004 11:33:29 -0400 Date: Wed, 14 Apr 2004 11:33:28 -0400 From: "Maddox, Buford J" Subject: RE: Varian MLC Secondary Feedback Brush Sender: owner-linac-eng@plato.aristotle.net To: 'kim yeung' , Linac-Eng Message-id: <36298D09ED1AD311B4DC0008C7F4D4E1114663F0@phsexch6.partners.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_RZtPwC+oNI7yH3s21xKlhg)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 14 Apr 2004 11:33:28 -0400 From: "Maddox, Buford J" Subject: RE: Varian MLC Secondary Feedback Brush Sender: owner-linac-eng@plato.aristotle.net To: 'kim yeung' , Linac-Eng X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_RZtPwC+oNI7yH3s21xKlhg) Content-type: text/plain; charset=iso-8859-1 We have upgraded our M3 to the new version. It has a steeper angle, for more pressure on the contacts. It may also have better plastic or metal parts that are not obvious, as it looks the same. It definitely works better. I think the same brush is being supplied for the Mark series MLC. Jerry -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of kim yeung Sent: Tuesday, April 13, 2004 8:40 AM To: Linac-Eng Subject: Re: Varian MLC Secondary Feedback Brush Hi Colleagues, Varian MLC Secondary Feedback Brsuh Someone on the list has mentioned there is a new version of secondary feedback brush for BrainLab MLC. I was told the part number of SFB brush, 889655-01, is used for all MLC except BrianLab's, and the part number 889655-02 can be used for all MLC including BrianLab's. Could anyone know and advise the design differences of the two versions? Has anyone put the 02 version in service yet? Best regards, KimYeung _____ Yahoo! Messenger - Communicate instantly..."Ping" your friends today! Download Messenger Now --Boundary_(ID_RZtPwC+oNI7yH3s21xKlhg) Content-type: text/html; charset=iso-8859-1
We have upgraded our M3 to the new version.  It has a steeper angle, for more pressure on the contacts.  It may also have better plastic or metal parts that are not obvious, as it looks the same.  It definitely works better.  I think the same brush is being supplied for the Mark series MLC.
Jerry
 -----Original Message-----
From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of kim yeung
Sent: Tuesday, April 13, 2004 8:40 AM
To: Linac-Eng
Subject: Re: Varian MLC Secondary Feedback Brush

Hi Colleagues,
 
          Varian MLC Secondary Feedback Brsuh
 
Someone on the list has mentioned there is a new version of secondary feedback brush for BrainLab MLC.
 
I was told the part number of SFB brush, 889655-01, is used for all MLC except BrianLab's, and the part number 889655-02 can be used for all MLC including BrianLab's.
 
Could anyone know and advise the design differences of the two versions? Has anyone put the 02 version in service yet?
 
Best regards,
 
KimYeung

Yahoo! Messenger - Communicate instantly..."Ping" your friends today! Download Messenger Now
--Boundary_(ID_RZtPwC+oNI7yH3s21xKlhg)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HW600DO3X0G0V@hubbard.azu.nl>; Thu, 15 Apr 2004 04:18:05 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004041504175310326 ; Thu, 15 Apr 2004 04:17:53 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id EAA10236; Thu, 15 Apr 2004 04:17:53 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma015532; Wed, 14 Apr 2004 19:58:09 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id LAA01559 for linac-eng-list; Wed, 14 Apr 2004 11:04:57 -0500 (CDT) Received: from PHSEXCHICO2.Partners.org (phsexchico2.partners.org [170.223.254.20]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id LAA01555 for ; Wed, 14 Apr 2004 11:04:55 -0500 (CDT) Received: by phsexchico2.partners.org with Internet Mail Service (5.5.2657.72) id <2DPKKBLC>; Wed, 14 Apr 2004 12:03:20 -0400 Date: Wed, 14 Apr 2004 12:03:19 -0400 From: "Maddox, Buford J" Subject: RE: Varian Position Readout Calibration Sender: owner-linac-eng@plato.aristotle.net To: "'Randy.McVittie@lrcc.on.ca'" , linac-eng@plato.aristotle.net Message-id: <36298D09ED1AD311B4DC0008C7F4D4E1114663F3@phsexch6.partners.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 14 Apr 2004 12:03:19 -0400 From: "Maddox, Buford J" Subject: RE: Varian Position Readout Calibration Sender: owner-linac-eng@plato.aristotle.net To: "'Randy.McVittie@lrcc.on.ca'" , linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f TX for info re UJ1 spro cleaning issue. Haven't seen that one. I usually plot the volts vs position, use that to figure out whether pro or spro when it changes next. Any other tricks? Pot often shows up only one place. Loose set screw causes shift of all values. Snagging cable causes erratic behavior. I have seen the volts different by .1-.2, works ok, but I set them within .01 when they need work. Never checked by doing the math, but I think they do a least squares fit to a straight line, and that is the deviation you see. Easy to do with a scientific calc, will try it sometime. My jaws usually have a std about 1 or less, as per course target, like you said. I find the center very carefully using only one of the 4 jaws before doing the cal, to keep the midline matching accurate during treatments. -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Randy.McVittie@lrcc.on.ca Sent: Wednesday, April 14, 2004 9:58 AM To: linac-eng@plato.aristotle.net Subject: Varian Position Readout Calibration We have been having HWFA on UJ1 on one of our machines and we have changed everything. We have usually found that a problem exists with the SPRO assembly, the bushing gets sticky and the SPRO pot doesn't move freely. I don't know why it has been the SPRO on UJ1 I just know that it has been taken apart and cleaned on 3 or 4 of our machines. I am glad it has only been a problem once on UJ2 since that requires removing the lower jaw assembly to access it. I am wondering if anyone knows if the Primary and Secondary pots on a dynamic axis have to be aligned closely together before the axis is calibrated. Is there a spec like they should be within 100 A/D counts or something like that. Does anyone know how Varian comes up with the calibration deviation number? I know that the data points are equal amounts apart you will get a deviation of 0.00, if a data point is off a couple of counts the deviation will be 0.707. I keep seeing numbers like 0.707 ( 1 over sqrt(2)) 0.866 (1 over sqrt(3)) 1.414 (sqrt(2)) etc Everytime I do a calibration I try to figure out just what the formula they use is. When I was on course (years ago) we were told to try to get the deviation down to 1.00 or less. Is this still the case? Randy  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HW800JRL5NEL7@hubbard.azu.nl>; Thu, 15 Apr 2004 20:21:18 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004041520211324390 ; Thu, 15 Apr 2004 20:21:13 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id UAA06814; Thu, 15 Apr 2004 20:21:13 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma000682; Thu, 15 Apr 2004 16:31:38 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id HAA21114 for linac-eng-list; Thu, 15 Apr 2004 07:53:17 -0500 (CDT) Received: from mail.vll.se (mail.vll.se [193.10.32.12]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id HAA21110 for ; Thu, 15 Apr 2004 07:53:15 -0500 (CDT) Date: Thu, 15 Apr 2004 14:50:55 +0200 From: mikael.wendelsten@vll.se Subject: UDRS I/L dynamic wedge Clinac 600C Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: TFS Secure Messaging Server /320000000/460000103/460200035/460820098/ X-Mailer: Version 5.0 Build 132 Content-type: text/plain; charset=ISO-8859-1 Content-transfer-encoding: 8bit Precedence: bulk X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id HAA21111 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 15 Apr 2004 14:50:55 +0200 From: mikael.wendelsten@vll.se Subject: UDRS I/L dynamic wedge Clinac 600C Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id HAA21111 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hello all We have a Clinac 600C with S/N 55 that experience intermittent UDRS interlock when we have dynamic wedge fields. We have had this problem for a long time but it is beginning to get worse. To clear the interlock we have to radiate 1MU without dynamic wedge then it is possible to clear the interlock and proceed with the treatment. We have no problem with the doserate in normal mode, for 200 MU/min we have approx 230 MU/min without doserate-servo. I have seen some notes that the Timer Interface Card can be involved, we have a card with P/N 1104685-03 and I have seen notes that for a Clinac 600C with serialnumber 1-399 you should have a Timer I/F card with a -06 in the end of the P/N, is that correct ? and can that cause the fault that we see? So I have two problems 1. We get UDRS interlock when we do dynamic wedge treatment, approx 1 or 2 times per day 2. We have to radiate 1MU without dynamic wedge to be able to clear the interlock All the best Mikael Wendelsten Umea Sweden  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HW8000O37PDYY@hubbard.azu.nl>; Thu, 15 Apr 2004 21:05:41 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004041521053724881 ; Thu, 15 Apr 2004 21:05:37 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id VAA06553; Thu, 15 Apr 2004 21:05:36 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma005022; Thu, 15 Apr 2004 18:01:15 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id JAA23336 for linac-eng-list; Thu, 15 Apr 2004 09:17:21 -0500 (CDT) Received: from crux-nb01s0.health.nb.ca (well.health.nb.ca [207.179.181.34]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id JAA23332 for ; Thu, 15 Apr 2004 09:17:19 -0500 (CDT) Received: from SJRH-AS-N03.NBHEALTH ([10.21.4.10]) by crux-nb01s0.health.nb.ca (Post.Office MTA v3.5.3 release 223 ID# 607-58282U90000L90000S0V35) with ESMTP id ca for ; Thu, 15 Apr 2004 11:16:00 -0300 Received: from AHSC_DOMR-MTA by SJRH-AS-N03.NBHEALTH with Novell_GroupWise; Thu, 15 Apr 2004 11:16:46 -0300 Date: Thu, 15 Apr 2004 11:16:27 -0300 From: Marvin Rathburn Subject: Blasting Sender: owner-linac-eng@plato.aristotle.net To: Linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.5.2 Beta Content-type: text/plain; charset=US-ASCII Content-disposition: inline Content-transfer-encoding: 7bit Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 15 Apr 2004 11:16:27 -0300 From: Marvin Rathburn Subject: Blasting Sender: owner-linac-eng@plato.aristotle.net To: Linac-eng@plato.aristotle.net Content-disposition: inline X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hello to all on the list The hospital where our clinic is located is going to be doing some major construction which will involve blasting rock. Our bunkers are located below grade and they have asked me if the blasting will affect out accelerators? They will be blasting approximately 1300 feet from the bunkers at the closest point. Has anyone had any experience with this sort of thing and did it create any problems did you see any shift in lasers, isocenter etc. Regards Marvin Rathburn  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HW8002YE9L5C8@hubbard.azu.nl>; Thu, 15 Apr 2004 23:30:15 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004041522542329558 ; Thu, 15 Apr 2004 22:54:23 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id WAA27811; Thu, 15 Apr 2004 22:54:23 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma000840; Thu, 15 Apr 2004 16:32:05 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id HAA20971 for linac-eng-list; Thu, 15 Apr 2004 07:39:33 -0500 (CDT) Received: from grh400.grhosp.com (mail.grhosp.on.ca [216.16.232.116]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id HAA20967 for ; Thu, 15 Apr 2004 07:39:31 -0500 (CDT) Received: by grh400.grhosp.com with Internet Mail Service (5.5.2653.19) id <28NZ7A7V>; Thu, 15 Apr 2004 08:42:58 -0400 Date: Thu, 15 Apr 2004 08:42:57 -0400 From: "Ukos, John" Subject: RE: Radiation/Light Field Coincidence on Varian 1800 - Revisited Sender: owner-linac-eng@plato.aristotle.net To: 'Scott Mange' , linac-eng@plato.aristotle.net Cc: Vanessa Mange Message-id: <8A5AB45E9C14E843B21D2887C1DFAEBF0171D240@grh402.grhosp.com> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_ROtcG8S2MGEdg7N5FwjKqQ)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 15 Apr 2004 08:42:57 -0400 From: "Ukos, John" Subject: RE: Radiation/Light Field Coincidence on Varian 1800 - Revisited Sender: owner-linac-eng@plato.aristotle.net To: 'Scott Mange' , linac-eng@plato.aristotle.net Cc: Vanessa Mange X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_ROtcG8S2MGEdg7N5FwjKqQ) Content-type: text/plain; charset=iso-8859-1 you say the light field does not wander more than expected with the shadow test. My experience is that the light field can be adjusted such that there is no discernable movement of the shadow whatsoever. When you do the shadow test are you placing the card or whatever opaque object high up in the collimator i.e. remove x-hairs and up between x and y jaws altitude? Just some more questions for you in case you felt there weren't enough on your mind. -----Original Message----- From: Scott Mange [mailto:smange@ameritech.net] Sent: April 14, 2004 8:49 PM To: linac-eng@plato.aristotle.net Cc: Vanessa Mange Subject: Radiation/Light Field Coincidence on Varian 1800 - Revisited Dear Engineers, Let me begin by saying "thank you" to everyone that's responded to my original post. You people are always very helpful and understanding. I'd also like to clear up the mis-impression I may have given in that I'm the local physicist and would not dream of trying to adjust this without the help of a qualified engineer. It's our engineer who says this problem is not the light field. He says I'll have to get out the water tank and I dread that idea (I'm sure he does too!). WHAT I'VE DONE AND FOUND: The problem does rotate with the collimator - its always the same jaw exhibiting this problem. I've tried the trick where you look at the shadow cast by a business card/ruler/etc. and rotate the collimator 180 degs. That seems to check out fine. The projected CAX does not wander more than expected under collimator rotation. I've tried both photon energies and the same problem is there by the same amount for the same jaw for both energies. I've tried the coincidence test using film for extended SSDs (120cm) with the original result. I've also tried the half-beam block test where you move one of the independent jaws to the CAX, mark the film, rotate and expose again. With this test I do see a definite difference in the radiation fields for the ones of interest while the light field edges are pretty good but not great. I did mark the cross hairs on the film and after developing found the light field for the jaw in question is about 1mm larger than its opposite while the radiation field is about 2mm smaller than its opposite jaw - hence the 3mm difference. MY THOUGHTS: Because the cone of radiation does not rotate with the collimator and yet the problem does rotate with the collimator while the lamp and mirror do, I'm lead to believe its the light field. Because the shadow cast by the business card/etc. under collimator rotation stays steady and symmetrical, I'm lead to believe its the radiation field. Because I've tested both energies and would hope this effect would affect only one energy, I'm lead to believe its the light field (but am not sure). Because I've tested this at more than one SSD with the same results, I'm lead to believe the radiation and light fields are coincident. So why just the one jaw being off?? Original question!!! Damn! I've tried the half beam block test which shows the jaws are not symmetric under radiation and a bit un-symmetric under light field. I'm not sure this test tells me more than I already know. I measured the distance from the CAX to the edge of the jaws in question and found the distances to be the same within 1mm for the light field while the same measurement for the radiation shows a 2mm difference. This leads me to believe its the radiation field. I find myself trying to picture all the geometries and come up with a scenario that could duplicate the symptoms I'm seeing and failing to find one. If I can adjust the one jaw so its symmetric with its mate, presumably, the light field will still be 3mm "outside" the radiation field. Then all I can do is adjust the mirror/light to make the light coincident with the radiation. I'm tired and my head hurts. Does anyone else have any thoughts? Thanks again for your help! Scott Mange smange@ameritech.net ---------------------------------------------------------------------------- --------------------------------------------- Gentlemen (and Ladies), I'm not an engineer so please have patience with me when answering this question. PROBLEM: Our light field/radiation are not coincident on one side and I'd like to know if adjusting it is a simple thing or do I need the water scanner? SITUATION: Varian clinac 1800 serial 157. Setting PSA to 100 SSD, jaw size approx. 15x15, ready-pack film taped to the table. I'd mark the light field edges with a pen and using a ruler "connect the dots" so I can see the line when I develop the film. Then, expose the film and develop. With the gantry at 180 (vertical pointing down) and the collimator at 180 (accessory opening towards the machine), the light field/radiation coincidence is good on 3 jaws. The radiation field is "inside" the line I scribed on the left hand jaw as I stand facing the gantry. It's inside about 3mm. Same set-up but rotate the collimator to 90 so the accessory opening is to the left as I stand facing the gantry. The radiation field is again "inside" the scribed line about 3mm but this time on the jaw nearest me as I stand facing the gantry. I now know the effect is real and moves with the collimator head. Question: Does fixing this require getting the scanner out? My sincere thanks to you in advance. Regards, Scott Mange --Boundary_(ID_ROtcG8S2MGEdg7N5FwjKqQ) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: quoted-printable RE: Radiation/Light Field Coincidence on Varian 1800 - = Revisited

you say the light field does not wander more than = expected with the shadow test. My experience is that the light field = can be adjusted such that there is no discernable movement of the = shadow whatsoever.  When you do the shadow test are you placing = the card or whatever opaque object high up in the collimator i.e. = remove x-hairs and up between x and y jaws altitude?  Just some = more questions for you in case you felt there weren't enough on your = mind.

-----Original Message-----
From: Scott Mange [mailto:smange@ameritech.net]
Sent: April 14, 2004 8:49 PM
To: linac-eng@plato.aristotle.net
Cc: Vanessa Mange
Subject: Radiation/Light Field Coincidence on Varian = 1800 - Revisited


Dear Engineers,

Let me begin by saying "thank you" to = everyone that's responded to my
original post.  You people are always very = helpful and understanding.  I'd
also like to clear up the mis-impression I may have = given in that I'm the
local physicist and would not dream of trying to = adjust this without the
help of a qualified engineer.  It's our = engineer who says this problem is
not the light field.  He says I'll have to get = out the water tank and I
dread that idea (I'm sure he does too!).

WHAT I'VE DONE AND FOUND:
The problem does rotate with the collimator - its = always the same jaw
exhibiting this problem.  I've tried the trick = where you look at the shadow
cast by a business card/ruler/etc. and rotate the = collimator 180
degs.  That seems to check out fine.  The = projected CAX does not wander
more than expected under collimator rotation.  = I've tried both photon
energies and the same problem is there by the same = amount for the same jaw
for both energies.  I've tried the coincidence = test using film for extended
SSDs (120cm) with the original result.  I've = also tried the half-beam block
test where you move one of the independent jaws to = the CAX, mark the film,
rotate and expose again.  With this test I do = see a definite difference in
the radiation fields for the ones of interest while = the light field edges
are pretty good but not great.  I did mark the = cross hairs on the film and
after developing found the light field for the jaw = in question is about 1mm
larger than its opposite while the radiation field = is about 2mm smaller
than its opposite jaw - hence the 3mm = difference.

MY THOUGHTS:
Because the cone of radiation does not rotate with = the collimator and yet
the problem does rotate with the collimator while = the lamp and mirror do,
I'm lead to believe its the light field.

Because the shadow cast by the business card/etc. = under collimator rotation
stays steady and symmetrical, I'm lead to believe = its the radiation field.

Because I've tested both energies and would hope this = effect would affect
only one energy, I'm lead to believe its the light = field (but am not sure).

Because I've tested this at more than one SSD with = the same results, I'm
lead to believe the radiation and light fields are = coincident.  So why just
the one jaw being off??  Original = question!!!  Damn!

I've tried the half beam block test which shows the = jaws are not symmetric
under radiation and a bit un-symmetric under light = field.  I'm not sure
this test tells me more than I already know.  I = measured the distance from
the CAX to the edge of the jaws in question and = found the distances to be
the same within 1mm for the light field  while = the same measurement for the
radiation shows a 2mm difference.  This leads = me to believe its the
radiation field.

I find myself trying to picture all the geometries = and come up with a
scenario that could duplicate the symptoms I'm = seeing and failing to find one.

If I can adjust the one jaw so its symmetric with its = mate, presumably, the
light field will still be 3mm "outside" = the radiation field.  Then all I
can do is adjust the mirror/light to make the light = coincident with the
radiation.

I'm tired and my head hurts.  Does anyone else = have any thoughts?

Thanks again for your help!
Scott Mange
smange@ameritech.net
---------------------------------------------------------------= ----------------------------------------------------------

Gentlemen (and Ladies),

I'm not an engineer so please have patience with me = when answering this
question.

PROBLEM:
Our light field/radiation are not coincident on one = side and I'd like to
know if adjusting it is a simple thing or do I need = the water scanner?

SITUATION:
Varian clinac 1800 serial 157.  Setting PSA to = 100 SSD, jaw size approx.
15x15, ready-pack film taped to the table.  I'd = mark the light field edges
with a pen and using a ruler "connect the = dots" so I can see the line when
I develop the film.  Then, expose the film and = develop.

With the gantry at 180 (vertical pointing down) and = the collimator at 180
(accessory opening towards the machine), the light = field/radiation
coincidence is good on 3 jaws.  The radiation = field is "inside" the line I
scribed on the left hand jaw as I stand facing the = gantry.  It's inside
about 3mm.

Same set-up but rotate the collimator to 90 so the = accessory opening is to
the left as I stand facing the gantry.  The = radiation field is again
"inside" the scribed line about 3mm but = this time on the jaw nearest me as
I stand facing the gantry.

I now know the effect is real and moves with the = collimator head.

Question:
Does fixing this require getting the scanner = out?

My sincere thanks to you in advance.

Regards,
Scott Mange

--Boundary_(ID_ROtcG8S2MGEdg7N5FwjKqQ)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HW900KWTDPRAI@hubbard.azu.nl>; Fri, 16 Apr 2004 13:01:33 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004041612530513982 ; Fri, 16 Apr 2004 12:53:05 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id MAA20794; Fri, 16 Apr 2004 12:53:06 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma020390; Fri, 16 Apr 2004 12:51:39 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id DAA10323 for linac-eng-list; Fri, 16 Apr 2004 03:56:04 -0500 (CDT) Received: from mail20.nhs.uk (mail20.nhs.uk [62.6.139.212]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id DAA10319 for ; Fri, 16 Apr 2004 03:56:02 -0500 (CDT) Received: from [10.191.254.3] (helo=relayint1.nhs.uk) by mail20.nhs.uk with esmtp (MTC MTA) id 1BEP8G-0006Gu-5l for linac-eng@plato.aristotle.net; Fri, 16 Apr 2004 09:55:32 +0100 Received: from relay.nhs.uk (194.62.42.144) by relayint1.nhs.uk (Syntegra-I1 7.0.008) id 40694D70003E6D55 for linac-eng@plato.aristotle.net; Fri, 16 Apr 2004 09:55:31 +0100 Received: from beijing.relay.grampian.scot.nhs.uk (10.251.30.7) by relay.nhs.uk (Syntegra-4 7.0.008) (authenticated as relay_grampian_scot_nhs_uk@es2002.nhs.uk) id 407EAE0900039FAA; Fri, 16 Apr 2004 09:55:31 +0100 Received: from arh-mail2.arh.grampian.scot.nhs.uk ([9.16.60.28]) by beijing.relay.grampian.scot.nhs.uk with Microsoft SMTPSVC(5.0.2195.6872) ; Fri, 16 Apr 2004 09:52:30 +0100 Received: by arh-mail2.arh.grampian.scot.nhs.uk with Internet Mail Service (5.5.2657.72) id <28HGMWWS>; Fri, 16 Apr 2004 09:52:51 +0100 Date: Fri, 16 Apr 2004 09:55:21 +0100 From: David.Smith@arh.grampian.scot.nhs.uk Subject: RE: Blasting [Scanned By SOPHOS Anti-Virus] Sender: owner-linac-eng@plato.aristotle.net To: RATMA@reg2.health.nb.ca Cc: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; CHARSET=US-ASCII Precedence: bulk X-OriginalArrivalTime: 16 Apr 2004 08:52:30.0953 (UTC) FILETIME=[26FC0590:01C42390] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 16 Apr 2004 09:55:21 +0100 From: David.Smith@arh.grampian.scot.nhs.uk Subject: RE: Blasting [Scanned By SOPHOS Anti-Virus] Sender: owner-linac-eng@plato.aristotle.net To: RATMA@reg2.health.nb.ca Cc: linac-eng@plato.aristotle.net X-OriginalArrivalTime: 16 Apr 2004 08:52:30.0953 (UTC) FILETIME=[26FC0590:01C42390] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Marvin, Have not experienced blasting but when they built on another bunker which ajoined an existing one there was alot of heavy drilling into one of the walls in order to tie the walls together. This wall had a wall mounted laser and there was no movement of the laser at all. Also the machine isocentre was not affected when they drove piles into the ground for foundations. In your case with the bunker being under ground then I suppose local geology will have to be considered. Hopefully you will not have any problems good luck! Dave Smith > -----Original Message----- > From: Marvin Rathburn [SMTP:RATMA@reg2.health.nb.ca] > Sent: Thursday, April 15, 2004 3:16 PM > To: Linac-eng@plato.aristotle.net > Subject: Blasting [Scanned By SOPHOS Anti-Virus] > > Hello to all on the list > The hospital where our clinic is located is going to be > doing some major construction which will involve blasting rock. Our > bunkers are located below grade and they have asked me if the blasting > will affect out accelerators? They will be blasting approximately 1300 > feet from the bunkers at the closest point. Has anyone had any > experience with this sort of thing and did it create any problems did > you see any shift in lasers, isocenter etc. > > Regards > Marvin Rathburn  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HWA0029WJD1QT@hubbard.azu.nl>; Sat, 17 Apr 2004 03:12:41 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004041703123728845 ; Sat, 17 Apr 2004 03:12:37 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id DAA04203; Sat, 17 Apr 2004 03:12:37 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma004186; Sat, 17 Apr 2004 03:12:20 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id SAA25760 for linac-eng-list; Fri, 16 Apr 2004 18:33:47 -0500 (CDT) Received: from imo-m24.mx.aol.com (imo-m24.mx.aol.com [64.12.137.5]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id SAA25756 for ; Fri, 16 Apr 2004 18:33:46 -0500 (CDT) Received: from Mlaa@aol.com by imo-m24.mx.aol.com (mail_out_v37_r1.2.) id y.1eb.1e09441c (4328) for ; Fri, 16 Apr 2004 19:33:13 -0400 (EDT) Date: Fri, 16 Apr 2004 19:33:13 -0400 (EDT) From: Mlaa@aol.com Subject: Fisher Generator PCB Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <1eb.1e09441c.2db1c739@aol.com> MIME-version: 1.0 X-Mailer: 9.0 for Windows sub 5006 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_4cK+YhNdoWA7DTiAWmPDOg)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 16 Apr 2004 19:33:13 -0400 (EDT) From: Mlaa@aol.com Subject: Fisher Generator PCB Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f --Boundary_(ID_4cK+YhNdoWA7DTiAWmPDOg) Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7bit Hello to all on list, I am in search of a Fischer Micro X-75 AEC I/O board. It is the number two card of a three board system. If anyone knows of one would you please let me know. Thanks in advance, and have a good weekend. Mike Liddicote Accelerator Associates --Boundary_(ID_4cK+YhNdoWA7DTiAWmPDOg) Content-type: text/html; charset=US-ASCII Content-transfer-encoding: quoted-printable
Hello to all on list,
    I am in search of a Fischer Micro X-7= 5 AEC I/O board.  It is the number two card of a three board system.&nb= sp; If anyone knows of one would you please let me know.  Thanks in adv= ance, and have a good weekend.
Mike Liddicote
Accelerator Associates
--Boundary_(ID_4cK+YhNdoWA7DTiAWmPDOg)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HWE00DW0U1WAS@hubbard.azu.nl>; Mon, 19 Apr 2004 11:43:44 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004041911432105523 ; Mon, 19 Apr 2004 11:43:21 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id LAA04590; Mon, 19 Apr 2004 11:43:22 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma003894; Mon, 19 Apr 2004 11:41:25 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id CAA01455 for linac-eng-list; Mon, 19 Apr 2004 02:44:17 -0500 (CDT) Received: from sqproxy.mpdoch.org (mailgate.mpdoch.org [62.49.79.242]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id CAA01451 for ; Mon, 19 Apr 2004 02:44:14 -0500 (CDT) Date: Mon, 19 Apr 2004 08:43:58 +0100 From: Dave Jones Subject: Re Blasting Sender: owner-linac-eng@plato.aristotle.net To: linac mail-list Reply-to: d.jones@mpdoch.org Message-id: MIME-version: 1.0 Content-type: text/plain; format=flowed; charset=us-ascii Content-transfer-encoding: 7bit Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 19 Apr 2004 08:43:58 +0100 From: Dave Jones Subject: Re Blasting Sender: owner-linac-eng@plato.aristotle.net To: linac mail-list Reply-to: d.jones@mpdoch.org X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f We had a building aproximatly 1000 meters away on another site blasted a couple of years ago it was later discovered that the isocenter of one of our linacs had moved by 8mm and our sim couch to gantry alighment by 1 degree isocenter still on funny enough. We had at the time two Elekta linacs and an Odelft sim. Our blasting was demolition of a brewery. D Jones uk engineer -- -- Disclaimer: The information contained in this message and/or any attachments(s) may be of a private and confidential nature, and is intended solely for the attention of the addressee. If you have received this message in error or feel you should not have been the intended recipient, please return it and any attachments to the sender immediately. All messages relating to this communication should then be deleted from your system. Unauthorised usage, copying, disclosure or alteration of this message and/or attachment(s) is strictly prohibited. Barking, Havering and Redbridge Hospitals NHS Trust will not be held responsible for any direct or indirect damages which may arise from alteration of this message or any attachment(s), by a third party or resulting from the transmission of a virus.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HWH00EM1DAAIZ@hubbard.azu.nl>; Tue, 20 Apr 2004 19:44:44 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004042019444214123 ; Tue, 20 Apr 2004 19:44:42 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA03629; Tue, 20 Apr 2004 19:44:45 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma003546; Tue, 20 Apr 2004 19:44:13 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id KAA29777 for linac-eng-list; Tue, 20 Apr 2004 10:24:18 -0500 (CDT) Received: from twmms2.carebridge.net (twmms2.carebridge.net [139.177.230.4]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id KAA29773 for ; Tue, 20 Apr 2004 10:24:16 -0500 (CDT) Received: from 32.72.1.9 by twmms1.carebridge.net with SMTP (SMTP Relay) ; Tue, 20 Apr 2004 11:22:31 -0400 Received: from exchange01.phoebe.com ([129.47.10.151]) by smtp2k.phoebe.com (SAVSMTP 3.1.5.43) with SMTP id M2004042011221817133 for ; Tue, 20 Apr 2004 11:22:18 -0400 Date: Tue, 20 Apr 2004 11:22:18 -0400 From: "Eason, Guy" Subject: DS 12 faults. Sender: owner-linac-eng@plato.aristotle.net To: "Linac-Engineering (E-mail)" Message-id: MIME-version: 1.0 Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 8bit Precedence: bulk X-Server-Uuid: 18676035-2975-4217-93ED-B9F36E011F70 X-MimeOLE: Produced By Microsoft Exchange V6.0.6249.0 content-class: urn:content-classes:message Thread-Topic: DS 12 faults. Thread-Index: AcQm60TUGmXDkaWNS3OAlJMJhoC2tQ== X-WSS-ID: 6C9B9FBD1683471952-01-01 X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id KAA29774 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 20 Apr 2004 11:22:18 -0400 From: "Eason, Guy" Subject: DS 12 faults. Sender: owner-linac-eng@plato.aristotle.net To: "Linac-Engineering (E-mail)" X-Server-Uuid: 18676035-2975-4217-93ED-B9F36E011F70 X-MimeOLE: Produced By Microsoft Exchange V6.0.6249.0 content-class: urn:content-classes:message Thread-Topic: DS 12 faults. Thread-Index: AcQm60TUGmXDkaWNS3OAlJMJhoC2tQ== X-WSS-ID: 6C9B9FBD1683471952-01-01 X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id KAA29774 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Varian 21EX 2167. Just out of warranty. Having trouble with DS12 faults. MU2 changes causing a DS12 fault. Found that ION2 stays with the orignal calibration causing the system to calibrate correctly but when you beam on after 14 mu's we have MU1 of 13 - MU2 of 14. We know it is MU2 changing. Have changed out the dose integrator bd and timer interface board but still have the same problem. Since ION1 and ION2 does not change I think we can eliminate the power supply leaving only the ION chamber to give the faults. Any ideas? Guy Eason Radiation Oncology Phoebe Putney Memorial Hospital Albany, GA (229) 312-2280  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HWH00FOYFVPGO@hubbard.azu.nl>; Tue, 20 Apr 2004 20:40:42 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004042020403715209 ; Tue, 20 Apr 2004 20:40:37 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id UAA11879; Tue, 20 Apr 2004 20:40:41 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma011850; Tue, 20 Apr 2004 20:40:11 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id LAA01651 for linac-eng-list; Tue, 20 Apr 2004 11:29:42 -0500 (CDT) Received: from tmh.tmc.edu (mailgw1.tmh.tmc.edu [128.249.194.151]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id LAA01646; Tue, 20 Apr 2004 11:29:41 -0500 (CDT) Received: from ([10.120.62.235]) by mailgw1.tmh.tmc.edu with ESMTP ; Tue, 20 Apr 2004 11:29:01 -0500 Received: by exch5.tmh.tmc.edu with Internet Mail Service (5.5.2657.72) id ; Tue, 20 Apr 2004 11:29:01 -0500 Date: Tue, 20 Apr 2004 11:29:00 -0500 From: "Segovia, Luis E." Subject: RE: DS 12 faults. Sender: owner-linac-eng@plato.aristotle.net To: owner-linac-eng@plato.aristotle.net, "Eason, Guy" , "Linac-Engineering (E-mail)" Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; CHARSET=US-ASCII Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 20 Apr 2004 11:29:00 -0500 From: "Segovia, Luis E." Subject: RE: DS 12 faults. Sender: owner-linac-eng@plato.aristotle.net To: owner-linac-eng@plato.aristotle.net, "Eason, Guy" , "Linac-Engineering (E-mail)" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hello Guy, We had very similar problem. Ours was intermittent. We changed the timer board and had no problems for a week. After a while, we realized that the deQing was occurring too close to full cycle. We increase the TAps on our HV pwr supply and that took care of the problem. DS12 was not the only dosimetry interlock that we were getting though. Good luck Luis Segovia The Methodist Hospital Radiotherapy. > -----Original Message----- > From: owner-linac-eng@plato.aristotle.net > [SMTP:owner-linac-eng@plato.aristotle.net] On Behalf Of Eason, Guy > Sent: Tuesday, April 20, 2004 10:22 AM > To: Linac-Engineering (E-mail) > Subject: DS 12 faults. > > Varian 21EX 2167. Just out of warranty. > > Having trouble with DS12 faults. MU2 changes causing a DS12 fault. Found > that ION2 stays with the orignal calibration causing the system to > calibrate correctly but when you beam on after 14 mu's we have MU1 of 13 - > MU2 of 14. We know it is MU2 changing. Have changed out the dose > integrator bd and timer interface board but still have the same problem. > Since ION1 and ION2 does not change I think we can eliminate the power > supply leaving only the ION chamber to give the faults. Any ideas? > > Guy Eason > Radiation Oncology > Phoebe Putney Memorial Hospital > Albany, GA > (229) 312-2280 > ----------------------------------------- ____________________________________________________________________________________ ****CONFIDENTIALITY NOTICE**** This e-mail is the property of The Methodist Hospital and/or its relevant affiliates and may contain confidential and privileged material for the sole use of the intended recipient(s). Any review, use, distribution or disclosure by others is strictly prohibited. If you are not the intended recipient(or authorized to receive for the recipient), please contact the sender and delete all copies of the message. Thank you.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HWH00GS8HZE4Z@hubbard.azu.nl>; Tue, 20 Apr 2004 21:26:06 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004042021260115994 ; Tue, 20 Apr 2004 21:26:01 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id VAA18062; Tue, 20 Apr 2004 21:26:05 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma018024; Tue, 20 Apr 2004 21:25:35 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id MAA02761 for linac-eng-list; Tue, 20 Apr 2004 12:24:45 -0500 (CDT) Received: from glsmtp2.gundluth.org (glsmtp2-2.gundluth.org [204.69.146.17] (may be forged)) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id MAA02755; Tue, 20 Apr 2004 12:24:43 -0500 (CDT) Date: Tue, 20 Apr 2004 12:24:41 -0500 From: ajengstl@gundluth.org Subject: Re: DS 12 faults. Sender: owner-linac-eng@plato.aristotle.net To: "Eason, Guy" Cc: "Linac-Engineering (E-mail)" , owner-linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Lotus Notes Release 5.0.9 November 16, 2001 Content-type: text/plain; charset=us-ascii Precedence: bulk X-MIMETrack: Serialize by Router on GLSMTP2/GUNDLUTH(Release 5.0.12 |February 13, 2003) at 04/20/2004 12:20:33 PM X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 20 Apr 2004 12:24:41 -0500 From: ajengstl@gundluth.org Subject: Re: DS 12 faults. Sender: owner-linac-eng@plato.aristotle.net To: "Eason, Guy" Cc: "Linac-Engineering (E-mail)" , owner-linac-eng@plato.aristotle.net X-MIMETrack: Serialize by Router on GLSMTP2/GUNDLUTH(Release 5.0.12 |February 13, 2003) at 04/20/2004 12:20:33 PM X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f We have a 21EX sn 2180 that had the same problem. I changed the Timer Control board after researching about the DS12 faults and have not had this problem since. On our machine the ION1 and 2 and MU1 and 2 could be calibrated exactly right and we would still get intermittant DS12 faults. I have a question for you since we have pretty similiar systems. We get intermittant BMAG faults (maybe 3 per day). I have recalibrated the BMAG IL and checked BMAG voltages/current per energy all OK. Still have more things to check (cables,connections) but wondering if you have noticed this and maybe have a fix for it. Alan Engstler Gundersen Lutheran "Eason, Guy" To: "Linac-Engineering (E-mail)" Sent by: cc: owner-linac-eng@plato.ar Subject: DS 12 faults. istotle.net 04/20/04 10:22 AM Varian 21EX 2167. Just out of warranty. Having trouble with DS12 faults. MU2 changes causing a DS12 fault. Found that ION2 stays with the orignal calibration causing the system to calibrate correctly but when you beam on after 14 mu's we have MU1 of 13 - MU2 of 14. We know it is MU2 changing. Have changed out the dose integrator bd and timer interface board but still have the same problem. Since ION1 and ION2 does not change I think we can eliminate the power supply leaving only the ION chamber to give the faults. Any ideas? Guy Eason Radiation Oncology Phoebe Putney Memorial Hospital Albany, GA (229) 312-2280  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HWH00JJWR0XVV@hubbard.azu.nl>; Wed, 21 Apr 2004 00:41:29 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004042100412119322 ; Wed, 21 Apr 2004 00:41:21 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id AAA14405; Wed, 21 Apr 2004 00:41:24 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma014352; Wed, 21 Apr 2004 00:40:57 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id PAA06584 for linac-eng-list; Tue, 20 Apr 2004 15:31:32 -0500 (CDT) Received: from PHSEXCHICI2.Partners.org (phsexchici2.partners.org [170.223.254.21]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id PAA06505 for ; Tue, 20 Apr 2004 15:31:27 -0500 (CDT) Received: by phsexchici2.partners.org with Internet Mail Service (5.5.2657.72) id <29HMGW6L>; Tue, 20 Apr 2004 16:27:14 -0400 Date: Tue, 20 Apr 2004 16:27:13 -0400 From: "Maddox, Buford J" Subject: RE: DS 12 faults. Sender: owner-linac-eng@plato.aristotle.net To: "'Eason, Guy'" , "Linac-Engineering (E-mail)" Message-id: <36298D09ED1AD311B4DC0008C7F4D4E111466407@phsexch6.partners.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 20 Apr 2004 16:27:13 -0400 From: "Maddox, Buford J" Subject: RE: DS 12 faults. Sender: owner-linac-eng@plato.aristotle.net To: "'Eason, Guy'" , "Linac-Engineering (E-mail)" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f The ion 1 and 2 test currents are injected directly into the ion chamber, so if they are not changing, the dosimetry chain is ok, unless you have an intermittent. However, I would expect a change in the MU dose rate on the event log if you have an intermittent dose chain fault. Might be optimistic. the change of DS12 with DeQ sounds like an old noise problem I have seen, where noise got into the analog multiplexer and would move to various channels as you changed the DEQ timing. Ion chamber cables/connections might be a possibility, but should show up in ion 2? Loose parts in the ion chamber? Pressure leak in mu 2 side? Pressure leak would give a constant shift, not intermittent. Any effect of gantry rotation? Ion interlocks are go-nogo on the ion chamber power supply. Hopefully they would be activated before it could affect the dose cal. Good luck, Jerry -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Eason, Guy Sent: Tuesday, April 20, 2004 11:22 AM To: Linac-Engineering (E-mail) Subject: DS 12 faults. Varian 21EX 2167. Just out of warranty. Having trouble with DS12 faults. MU2 changes causing a DS12 fault. Found that ION2 stays with the orignal calibration causing the system to calibrate correctly but when you beam on after 14 mu's we have MU1 of 13 - MU2 of 14. We know it is MU2 changing. Have changed out the dose integrator bd and timer interface board but still have the same problem. Since ION1 and ION2 does not change I think we can eliminate the power supply leaving only the ION chamber to give the faults. Any ideas? Guy Eason Radiation Oncology Phoebe Putney Memorial Hospital Albany, GA (229) 312-2280  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HWH00JLZR57VV@hubbard.azu.nl>; Wed, 21 Apr 2004 00:44:01 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004042100435419356 ; Wed, 21 Apr 2004 00:43:54 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id AAA14733; Wed, 21 Apr 2004 00:43:58 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma014708; Wed, 21 Apr 2004 00:43:35 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id PAA08838 for linac-eng-list; Tue, 20 Apr 2004 15:49:41 -0500 (CDT) Received: from outbound-relay.biz.rr.com (outbound-relay.biz.rr.com [24.30.200.31]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id PAA08834 for ; Tue, 20 Apr 2004 15:49:37 -0500 (CDT) Received: from fep03.biz.rr.com (fep03.biz.rr.com [24.30.201.200]) by outbound-relay.biz.rr.com (8.12.10/8.12.10) with ESMTP id i3KKnP0U001564 for ; Tue, 20 Apr 2004 16:49:29 -0400 (EDT) Received: from pent4 ([24.173.18.166]) by fep03.biz.rr.com with ESMTP id <20040420204924.HNOH914.fep03.biz.rr.com@pent4> for ; Tue, 20 Apr 2004 16:49:24 -0400 Date: Tue, 20 Apr 2004 15:47:14 -0500 From: Thomas McCausland Subject: Siemens MLC P.M. practice Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Reply-to: acceltek@acceltekservice.com Message-id: <40854602.28368.150E4CB@localhost> MIME-version: 1.0 X-Mailer: Pegasus Mail for Win32 (v3.12c) Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 20 Apr 2004 15:47:14 -0500 From: Thomas McCausland Subject: Siemens MLC P.M. practice Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Reply-to: acceltek@acceltekservice.com X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Recent reports on this mailing list of ball bearings falling out of some of the Siemens MLC's has me in the proactive mode, with a goal towards avoiding such an unpleasant fate for the MLC's we service. I'm wondering if this is a design problem (probably), a maintenance issue, or a combination of both. Specifically what to you users and fixers do on a regular basis to keep your MLC's smiling and healthy, other than speed and position calibration? Clean the leaves? I've heard of a couple cases where cleaning the leaves actually created sticking leaves. In all reported cases, lint free cloth cut from the Shroud of Turin and 100 percent alcohol distilled from the the blood of Mayan princesses was used. It would seem based on those reports that a VERY light film of non greasy lubricant..ie..LPS or graphite might be beneficial. Does anyone lubricate any other part of the MLC? The motor worm- gear to driveshaft connection comes to mind. Toshiba seemed very generous with the grease in this area. Any thoughts or tips from the group would be appreciated. Thomas W. McCausland AccelTek Inc. 281-652-0059 888-619-8811  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HWI00DOYOIHP2@hubbard.azu.nl>; Wed, 21 Apr 2004 12:44:45 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004042112444030824 ; Wed, 21 Apr 2004 12:44:40 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id MAA02529; Wed, 21 Apr 2004 12:44:44 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma002372; Wed, 21 Apr 2004 12:43:58 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id DAA17567 for linac-eng-list; Wed, 21 Apr 2004 03:03:41 -0500 (CDT) Received: from mail20.nhs.uk (mail20.nhs.uk [62.6.139.212]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id DAA17563 for ; Wed, 21 Apr 2004 03:03:40 -0500 (CDT) Received: from [10.191.254.3] (helo=relayint2.nhs.uk) by mail20.nhs.uk with esmtp (MTC MTA) id 1BGChJ-0001Ue-9x for linac-eng@plato.aristotle.net; Wed, 21 Apr 2004 09:03:09 +0100 Received: from relay.nhs.uk (194.62.42.141) by relayint2.nhs.uk (Syntegra-I2 7.0.008) id 407EA81F00165913 for linac-eng@plato.aristotle.net; Wed, 21 Apr 2004 09:03:09 +0100 Received: from torph43.nnmain.nnuhi.nhs.uk (195.107.40.80) by relay.nhs.uk (Syntegra-1 7.0.008) id 40853E9200041157; Wed, 21 Apr 2004 09:03:09 +0100 Received: from Unknown [10.90.210.38] by torph43.nnmain.nnuhi.nhs.uk - SurfControl E-mail Filter (4.7); Wed, 21 Apr 2004 09:03:08 +0100 Received: by nnemail.nnuh.nhs.uk with Internet Mail Service (5.5.2653.19) id ; Wed, 21 Apr 2004 09:03:06 +0100 Date: Wed, 21 Apr 2004 09:03:05 +0100 From: glenn.rackstraw@nnuh.nhs.uk Subject: RE: DS 12 faults. Sender: owner-linac-eng@plato.aristotle.net To: geason@ppmh.org, linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-SEF-5980BD5F-DD2F-4F8C-88E8-3E6394F09C: 1 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 21 Apr 2004 09:03:05 +0100 From: glenn.rackstraw@nnuh.nhs.uk Subject: RE: DS 12 faults. Sender: owner-linac-eng@plato.aristotle.net To: geason@ppmh.org, linac-eng@plato.aristotle.net X-SEF-5980BD5F-DD2F-4F8C-88E8-3E6394F09C: 1 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hi Guy, I had a similar problem on one of our 600's, MU2 kept losing calibration. The fault turned out to be a dirty connection where the chamber coax cables go through the stand patch panel. Simply reseating the connections cleared the problem after having the problem for months and changing everything in the book to try and find it. Try swapping over cables to see if the fault moves. Glenn Rackstraw, Chief Technician, Radiotherapy Physics, Norfolk and Norwich University Hospital, Norwich. -----Original Message----- From: Eason, Guy [mailto:geason@ppmh.org] Sent: 20 April 2004 16:22 To: Linac-Engineering (E-mail) Subject: DS 12 faults. Varian 21EX 2167. Just out of warranty. Having trouble with DS12 faults. MU2 changes causing a DS12 fault. Found that ION2 stays with the orignal calibration causing the system to calibrate correctly but when you beam on after 14 mu's we have MU1 of 13 - MU2 of 14. We know it is MU2 changing. Have changed out the dose integrator bd and timer interface board but still have the same problem. Since ION1 and ION2 does not change I think we can eliminate the power supply leaving only the ION chamber to give the faults. Any ideas? Guy Eason Radiation Oncology Phoebe Putney Memorial Hospital Albany, GA (229) 312-2280  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HWI00HFASRC7I@hubbard.azu.nl>; Wed, 21 Apr 2004 14:16:32 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004042114162300361 ; Wed, 21 Apr 2004 14:16:23 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id OAA23688; Wed, 21 Apr 2004 14:16:27 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma023614; Wed, 21 Apr 2004 14:15:53 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id FAA20143 for linac-eng-list; Wed, 21 Apr 2004 05:38:04 -0500 (CDT) Received: from mail21.nhs.uk (mail21.nhs.uk [62.6.139.215]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id FAA20139 for ; Wed, 21 Apr 2004 05:38:01 -0500 (CDT) Received: from [10.191.254.3] (helo=relayint2.nhs.uk) by mail21.nhs.uk with esmtp (MTC MTA) id 1BGF6h-00005j-CS for linac-eng@plato.aristotle.net; Wed, 21 Apr 2004 11:37:31 +0100 Received: from relay.nhs.uk (194.62.42.141) by relayint2.nhs.uk (Syntegra-I2 7.0.008) id 407EA81F0017E376 for linac-eng@plato.aristotle.net; Wed, 21 Apr 2004 11:37:31 +0100 Received: from beijing.relay.grampian.scot.nhs.uk (10.251.30.7) by relay.nhs.uk (Syntegra-1 7.0.008) (authenticated as relay_grampian_scot_nhs_uk@es2002.nhs.uk) id 40853E920005DFA0; Wed, 21 Apr 2004 11:37:31 +0100 Received: from athens.arh.grampian.scot.nhs.uk ([9.16.61.18]) by beijing.relay.grampian.scot.nhs.uk with Microsoft SMTPSVC(5.0.2195.6872) ; Wed, 21 Apr 2004 11:32:05 +0100 Received: by athens.arh.grampian.scot.nhs.uk with Internet Mail Service (5.5.2653.19) id ; Wed, 21 Apr 2004 11:33:29 +0100 Date: Wed, 21 Apr 2004 11:35:00 +0100 From: "Smith, David Mr" Subject: RE: DS 12 faults. [Scanned By SOPHOS Anti-Virus] Sender: owner-linac-eng@plato.aristotle.net To: "'ajengstl@gundluth.org'" Cc: "Linac Engineering Group (E-mail)" Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: text/plain; CHARSET=US-ASCII Precedence: bulk X-OriginalArrivalTime: 21 Apr 2004 10:32:05.0421 (UTC) FILETIME=[E41C3DD0:01C4278B] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 21 Apr 2004 11:35:00 +0100 From: "Smith, David Mr" Subject: RE: DS 12 faults. [Scanned By SOPHOS Anti-Virus] Sender: owner-linac-eng@plato.aristotle.net To: "'ajengstl@gundluth.org'" Cc: "Linac Engineering Group (E-mail)" X-OriginalArrivalTime: 21 Apr 2004 10:32:05.0421 (UTC) FILETIME=[E41C3DD0:01C4278B] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Alan, Another area to check is the paper insulators around the cables where they enter the lead at the head end of the machine. We had a problem where the lead had worn through both the paper and cable insulation and was intermittently shorting the Bending Magnet to ground. Dave and Paul (Aberdeen) > -----Original Message----- > From: ajengstl@gundluth.org [SMTP:ajengstl@gundluth.org] > Sent: Tuesday, April 20, 2004 6:25 PM > To: Eason, Guy > Cc: Linac-Engineering (E-mail); owner-linac-eng@plato.aristotle.net > Subject: Re: DS 12 faults. [Scanned By SOPHOS Anti-Virus] > > > We have a 21EX sn 2180 that had the same problem. I changed the Timer > Control board after researching about the DS12 faults and have not had > this > problem since. On our machine the ION1 and 2 and MU1 and 2 could be > calibrated exactly right and we would still get intermittant DS12 faults. > I have a question for you since we have pretty similiar systems. We get > intermittant BMAG faults (maybe 3 per day). I have recalibrated the BMAG > IL > and checked BMAG voltages/current per energy all OK. Still have more > things > to check (cables,connections) but wondering if you have noticed this and > maybe have a fix for it. > > Alan Engstler > Gundersen Lutheran > > > > > "Eason, Guy" > > To: > "Linac-Engineering (E-mail)" > > Sent by: cc: > > owner-linac-eng@plato.ar Subject: DS 12 > faults. > istotle.net > > > > > > 04/20/04 10:22 AM > > > > > > > > > > Varian 21EX 2167. Just out of warranty. > > Having trouble with DS12 faults. MU2 changes causing a DS12 fault. Found > that ION2 stays with the orignal calibration causing the system to > calibrate correctly but when you beam on after 14 mu's we have MU1 of 13 - > MU2 of 14. We know it is MU2 changing. Have changed out the dose > integrator bd and timer interface board but still have the same problem. > Since ION1 and ION2 does not change I think we can eliminate the power > supply leaving only the ION chamber to give the faults. Any ideas? > > Guy Eason > Radiation Oncology > Phoebe Putney Memorial Hospital > Albany, GA > (229) 312-2280 > > > > > >  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HWI00KOLUBCJD@hubbard.azu.nl>; Wed, 21 Apr 2004 14:50:04 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004042114495901210 ; Wed, 21 Apr 2004 14:49:59 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id OAA01563; Wed, 21 Apr 2004 14:50:04 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma001364; Wed, 21 Apr 2004 14:49:12 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id GAA20541 for linac-eng-list; Wed, 21 Apr 2004 06:17:58 -0500 (CDT) Received: from mail23.nhs.uk (mail23.nhs.uk [62.6.139.221]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id GAA20537 for ; Wed, 21 Apr 2004 06:17:56 -0500 (CDT) Received: from [10.191.254.3] (helo=relayint1.nhs.uk) by mail23.nhs.uk with esmtp (MTC MTA) id 1BGFjK-0001kx-21 for linac-eng@plato.aristotle.net; Wed, 21 Apr 2004 12:17:26 +0100 Received: from relay.nhs.uk (194.62.42.141) by relayint1.nhs.uk (Syntegra-I1 7.0.008) id 40694D700051FE8F for linac-eng@plato.aristotle.net; Wed, 21 Apr 2004 12:17:25 +0100 Received: from mailsweeper.suht.swest.nhs.uk (194.189.32.135) by relay.nhs.uk (Syntegra-1 7.0.008) id 40853E9200065F12 for linac-eng@plato.aristotle.net; Wed, 21 Apr 2004 12:17:25 +0100 Received: from mail.suht.swest.nhs.uk (unverified) by mailsweeper.suht.swest.nhs.uk (Content Technologies SMTPRS 4.3.1) with ESMTP id for ; Wed, 21 Apr 2004 12:21:37 +0100 Received: from SGH-MTA by mail.suht.swest.nhs.uk with Novell_GroupWise; Wed, 21 Apr 2004 12:17:24 +0100 Date: Wed, 21 Apr 2004 12:17:02 +0100 From: John McKechnie Subject: Re: Re Blasting Sender: owner-linac-eng@plato.aristotle.net To: d.jones@mpdoch.org, linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.0.2 Content-type: text/plain; charset=us-ascii Content-disposition: inline Content-transfer-encoding: 7bit Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 21 Apr 2004 12:17:02 +0100 From: John McKechnie Subject: Re: Re Blasting Sender: owner-linac-eng@plato.aristotle.net To: d.jones@mpdoch.org, linac-eng@plato.aristotle.net Content-disposition: inline X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Such a sad story.....not the 8mm isocentre, but the demolished brewery :o) >>> Dave Jones 19/04/2004 08:43:58 >>> We had a building aproximatly 1000 meters away on another site blasted a couple of years ago it was later discovered that the isocenter of one of our linacs had moved by 8mm and our sim couch to gantry alighment by 1 degree isocenter still on funny enough. We had at the time two Elekta linacs and an Odelft sim. Our blasting was demolition of a brewery. D Jones uk engineer -- -- Disclaimer: The information contained in this message and/or any attachments(s) may be of a private and confidential nature, and is intended solely for the attention of the addressee. If you have received this message in error or feel you should not have been the intended recipient, please return it and any attachments to the sender immediately. All messages relating to this communication should then be deleted from your system. Unauthorised usage, copying, disclosure or alteration of this message and/or attachment(s) is strictly prohibited. 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If you have received this e-mail in error please delete the e-mail and contact the Southampton University Hospitals NHS Trust Helpdesk on:- 023 80796000 This footnote also confirms that this email message has been swept by MIMEsweeper for the presence of computer viruses. ************************************************************************************  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HWJ0042Q5NOQ7@hubbard.azu.nl>; Wed, 21 Apr 2004 18:55:02 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004042118550006679 ; Wed, 21 Apr 2004 18:55:00 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA20262; Wed, 21 Apr 2004 18:55:04 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma020190; Wed, 21 Apr 2004 18:54:29 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id JAA23854 for linac-eng-list; Wed, 21 Apr 2004 09:34:39 -0500 (CDT) Received: from sofia.lio.se (sofia.lio.se [158.126.248.25]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id JAA23850 for ; Wed, 21 Apr 2004 09:34:37 -0500 (CDT) Received: from LIO_S_TFS1 (tfs1.lio.se [158.126.3.87]) by sofia.lio.se (8.12.10/8.12.8) with SMTP id i3LEYYbl005311 for ; Wed, 21 Apr 2004 16:34:35 +0200 (CEST) Received: from [158.126.3.95] by [158.126.3.88]; Wed, 21 Apr 2004 16:38:16 +0200 Received: by ext-eximc1.int.lio.se with Internet Mail Service (5.5.2657.72) id ; Wed, 21 Apr 2004 16:34:27 +0200 Date: Wed, 21 Apr 2004 16:34:13 +0200 From: Viking Eilert Subject: Blasting Sender: owner-linac-eng@plato.aristotle.net To: "'linac-eng@plato.aristotle.net'" Message-id: <048198DF01EF4A4E94FFE480999E7C91B1417C@us-ex4.int.lio.se> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: quoted-printable Precedence: bulk X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id JAA23851 X-MIME-Autoconverted: from 8bit to quoted-printable by plato.aristotle.net id JAA23854 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 21 Apr 2004 16:34:13 +0200 From: Viking Eilert Subject: Blasting Sender: owner-linac-eng@plato.aristotle.net To: "'linac-eng@plato.aristotle.net'" X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id JAA23851 X-MIME-Autoconverted: from 8bit to quoted-printable by plato.aristotle.net id JAA23854 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hello Marvin Our hospital has been doing blasting at a couple of occasions for the las= t 15-20 years. What Varian tells us every time is to turn off the accelerat= ors (emergency off) at let the filaments cool down completely for approximate= ly 30 minutes before blasting. (I don't know anything about the Elekta and Siemens machines). We also installed measuring equipment to monitor the vibrations in the treatment room closest to the blast. They started to blast with not too m= uch power and then increased step by step monitoring the vibrations every tim= e. =20 The distance from the blast is of course important, but there could be a = big difference in different areas depending on the "ground structure" (if its mud, clay or stone for example). If the bunker is laying on the same rock= as the blast you could get a rather large vibration in the bunker. Another thing you could check, besides what's already mentioned below is flatness. Eilert accelerator engineer Universitetssjukhuset i Link=F6ping *** Eilert Viking K-centrum (060) *** tel:+46-13 222805 Radiofysikavdelningen (34102) *** fax: +46-13 222895 S-581 85 Link=F6ping *** Eilert.Viking@lio.se Sweden *** www.lio.se +46-13 222000 vx =09 ---------------------------------------------------------------------- -----Ursprungligt meddelande----- Fr=E5n: Dave Jones [SMTP:d.jones@mpdoch.org] Skickat: den 19 april 2004 09:44 Till: linac mail-list =C4mne: Re Blasting We had a building aproximatly 1000 meters away on another site blasted a=20 couple of years ago it was later discovered that the isocenter of one of=20 our linacs had moved by 8mm and our sim couch to gantry alighment by 1=20 degree isocenter still on funny enough. We had at the time two Elekta=20 linacs and an Odelft sim. Our blasting was demolition of a brewery. D Jones uk engineer ----------------------------------------------------- -----Ursprungligt meddelande----- Fr=E5n: David.Smith@arh.grampian.scot.nhs.uk [SMTP:David.Smith@arh.grampian.scot.nhs.uk] Skickat: den 16 april 2004 10:55 Till: RATMA@reg2.health.nb.ca Kopia: linac-eng@plato.aristotle.net =C4mne: RE: Blasting Marvin, Have not experienced blasting but when they built on another bunker which ajoined an existing one there was alot of heavy drilling into one of the walls in order to tie the walls together. This wall had a wall mounted la= ser and there was no movement of the laser at all. Also the machine isocentre was not affected when they drove piles into the ground for foundations. I= n your case with the bunker being under ground then I suppose local geology will have to be considered. Hopefully you will not have any problems good luck! Dave Smith -------------------------------------------- Hello to all on the list The hospital where our clinic is located is going to be doing some major construction which will involve blasting rock. Our bunkers are located below grade and they have asked me if the blasting will affect out accelerators? They will be blasting approximately 1300 feet from the bunkers at the closest point. Has anyone had any experience with this sort of thing and did it create any problems did you see any shift in lasers, isocenter etc.=20 Regards Marvin Rathburn  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HWJ0059G84UIJ@hubbard.azu.nl>; Wed, 21 Apr 2004 19:48:31 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004042119482907520 ; Wed, 21 Apr 2004 19:48:29 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA27195; Wed, 21 Apr 2004 19:48:33 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma027165; Wed, 21 Apr 2004 19:48:05 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id KAA25564 for linac-eng-list; Wed, 21 Apr 2004 10:22:38 -0500 (CDT) Received: from HSCEMAIL5.hscs.virginia.edu (hscemail5.hscs.Virginia.EDU [128.143.176.152]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id KAA25560 for ; Wed, 21 Apr 2004 10:22:36 -0500 (CDT) Received: from HSCSEMAIL4.hscs.virginia.edu ([128.143.165.15]) by HSCEMAIL5.hscs.virginia.edu with Microsoft SMTPSVC(5.0.2195.6713); Wed, 21 Apr 2004 11:20:23 -0400 Date: Wed, 21 Apr 2004 11:22:05 -0400 From: "Dove, Bill E *HS" Subject: RE: Siemens MLC P.M. practice Sender: owner-linac-eng@plato.aristotle.net To: acceltek@acceltekservice.com, linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 8bit Precedence: bulk X-MimeOLE: Produced By Microsoft Exchange V6.0.6487.1 content-class: urn:content-classes:message Thread-Topic: Siemens MLC P.M. practice Thread-Index: AcQnJhcJYHyj6FVPSWmqT60OWCRzGAAhOqTw X-OriginalArrivalTime: 21 Apr 2004 15:20:23.0781 (UTC) FILETIME=[2ABC8150:01C427B4] X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id KAA25561 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 21 Apr 2004 11:22:05 -0400 From: "Dove, Bill E *HS" Subject: RE: Siemens MLC P.M. practice Sender: owner-linac-eng@plato.aristotle.net To: acceltek@acceltekservice.com, linac-eng@plato.aristotle.net X-MimeOLE: Produced By Microsoft Exchange V6.0.6487.1 content-class: urn:content-classes:message Thread-Topic: Siemens MLC P.M. practice Thread-Index: AcQnJhcJYHyj6FVPSWmqT60OWCRzGAAhOqTw X-OriginalArrivalTime: 21 Apr 2004 15:20:23.0781 (UTC) FILETIME=[2ABC8150:01C427B4] X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id KAA25561 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f We have a Varian 2300CD with an Mark II (52 leaf) MLC doing IMRT. We clean our leaves, lead screws and follower nuts. When we remove a lead screw assembly we check the attached bearing VERY closely for and increased turning resistance that we believe may be due to radiation hardened grease or internal defects. If we find anything short of perfectly smooth rotation without increased turning resistance, per our opinion, we replace the bearings. Lately we have been replacing the brass follower nuts as well. We use a VERY small amount of Super Lube jell on the lead screw and the upper and lower edges on the leaf, absolutely nothing on the sides of the leaves. The "small" amount is applied by putting some jell on our fingers, rubbing the fingers together until only a thin film remains, then apply a barely detectable film of lubricant to lead screw and leaf edges. The MLC is a bit noisier with the limited amount of lube, but problems with leaf movement are reduced with this sch! ! eme. The bearing pair cost about $20 and the follower nuts are about $35 to $40 each, whereas a complete lead screw assembly costs about $540 each. Also note, new follower nuts must be "seated" to the lead screw before they are put into clinical use. We use 100% alcohol and dust free cleaning cloths for the cleanings. We were using alcohol distilled from the blood from a young virgin Mayan princess and the shirt form an honest lawyer or a politician who could go 24 hours without lying, but we can not find one anymore. William Dove, RTR(T) Service Engineer University of Virginia Health System Rad. Oncology Dept., Radiological Physics Div. Box 800375, Room 1787 Charlottesville, 22908 Voice: (434) 924-9422 FAX: (434) 982-3520 -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Thomas McCausland Sent: Tuesday, April 20, 2004 4:47 PM To: linac-eng@plato.aristotle.net Subject: Siemens MLC P.M. practice Recent reports on this mailing list of ball bearings falling out of some of the Siemens MLC's has me in the proactive mode, with a goal towards avoiding such an unpleasant fate for the MLC's we service. I'm wondering if this is a design problem (probably), a maintenance issue, or a combination of both. Specifically what to you users and fixers do on a regular basis to keep your MLC's smiling and healthy, other than speed and position calibration? Clean the leaves? I've heard of a couple cases where cleaning the leaves actually created sticking leaves. In all reported cases, lint free cloth cut from the Shroud of Turin and 100 percent alcohol distilled from the the blood of Mayan princesses was used. It would seem based on those reports that a VERY light film of non greasy lubricant..ie..LPS or graphite might be beneficial. Does anyone lubricate any other part of the MLC? The motor worm- gear to driveshaft connection comes to mind. Toshiba seemed very generous with the grease in this area. Any thoughts or tips from the group would be appreciated. Thomas W. McCausland AccelTek Inc. 281-652-0059 888-619-8811  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HWK006DPXZO7W@hubbard.azu.nl>; Thu, 22 Apr 2004 18:06:37 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004042218042132364 ; Thu, 22 Apr 2004 18:04:21 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA27985; Thu, 22 Apr 2004 18:04:24 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma027943; Thu, 22 Apr 2004 18:03:54 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id JAA16057 for linac-eng-list; Thu, 22 Apr 2004 09:05:27 -0500 (CDT) Received: from ihis.org (peihealth.ihis.org [142.176.18.65]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id JAA16053 for ; Thu, 22 Apr 2004 09:05:23 -0500 (CDT) Received: by peihealth.ihis.org id <115616>; Thu, 22 Apr 2004 10:51:37 -0300 Date: Thu, 22 Apr 2004 11:02:57 -0300 From: Rick Smith Subject: Field light life 21EX with MLC Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <04Apr22.105137adt.115616@peihealth.ihis.org> MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 5.5.7.1 Content-type: text/plain; charset=US-ASCII Content-disposition: inline Content-transfer-encoding: 8bit Precedence: bulk X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id JAA16054 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 22 Apr 2004 11:02:57 -0300 From: Rick Smith Subject: Field light life 21EX with MLC Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Content-disposition: inline X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id JAA16054 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f HI all, I have a 21EX with 120 leaf MMLC which has been treating patients since Oct/03. I have just changed the field light for the second time. What is the expected life for these bulbs? I would think that they should last more than 2 or 3 months. By the way the cooling fan is working but it shuts off with the lamp, there is no time delay to further cool the bulb. I am about to order a new lamp and socket but wondered what experience the rest of you have with this setup. Thanks Rick Smith PEI Cancer Centre Charlottetown, Prince Edward Island Canada 902 894 2113 ersmith@ihis.org  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HWL0066Z0VXVC@hubbard.azu.nl>; Thu, 22 Apr 2004 19:15:58 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004042219133601496 ; Thu, 22 Apr 2004 19:13:36 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA08325; Thu, 22 Apr 2004 19:13:39 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma008273; Thu, 22 Apr 2004 19:13:16 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id KAA17634 for linac-eng-list; Thu, 22 Apr 2004 10:23:49 -0500 (CDT) Received: from pop.sca.hin.sk.ca (shin.communitynet.ca [216.174.136.2]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id KAA17630 for ; Thu, 22 Apr 2004 10:23:47 -0500 (CDT) Received: from smtp.scf.sk.ca (unverified [172.24.48.3]) by scf.sk.ca (Rockliffe SMTPRA 6.0.9) with SMTP id ; Thu, 22 Apr 2004 09:23:46 -0600 Received: (from spc106 [172.24.56.106]) by smtp.scf.sk.ca (SAVSMTP 3.1.1.32) with SMTP id M2004042209234511067 ; Thu, 22 Apr 2004 09:23:45 -0600 Date: Thu, 22 Apr 2004 09:23:46 -0600 From: Chris Barnardo Subject: RE: Field light life 21EX with MLC In-reply-to: <04Apr22.105137adt.115616@peihealth.ihis.org> Sender: owner-linac-eng@plato.aristotle.net To: 'Rick Smith' , linac-eng@plato.aristotle.net Message-id: <000801c4287d$ce201a90$6a3818ac@sca.hin.sk.ca> MIME-version: 1.0 X-Mailer: Microsoft Outlook, Build 10.0.4510 Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 8bit Importance: Normal Precedence: bulk X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id KAA17631 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 (Normal) *** EOOH *** Date: Thu, 22 Apr 2004 09:23:46 -0600 From: Chris Barnardo Subject: RE: Field light life 21EX with MLC In-reply-to: <04Apr22.105137adt.115616@peihealth.ihis.org> Sender: owner-linac-eng@plato.aristotle.net To: 'Rick Smith' , linac-eng@plato.aristotle.net Importance: Normal X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id KAA17631 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 (Normal) Make sure the cabling that goes past the fan is going around the fan, not in the airflow path. Our bulbs last about 1 year when we replace them as a PM. -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net] On Behalf Of Rick Smith Sent: Thursday, April 22, 2004 8:03 AM To: linac-eng@plato.aristotle.net Subject: Field light life 21EX with MLC HI all, I have a 21EX with 120 leaf MMLC which has been treating patients since Oct/03. I have just changed the field light for the second time. What is the expected life for these bulbs? I would think that they should last more than 2 or 3 months. By the way the cooling fan is working but it shuts off with the lamp, there is no time delay to further cool the bulb. I am about to order a new lamp and socket but wondered what experience the rest of you have with this setup. Thanks Rick Smith PEI Cancer Centre Charlottetown, Prince Edward Island Canada 902 894 2113 ersmith@ihis.org  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HWL0064W2Z5VC@hubbard.azu.nl>; Thu, 22 Apr 2004 19:52:30 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004042219521602079 ; Thu, 22 Apr 2004 19:52:16 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA13238; Thu, 22 Apr 2004 19:52:19 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma013180; Thu, 22 Apr 2004 19:51:59 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id LAA18349 for linac-eng-list; Thu, 22 Apr 2004 11:08:21 -0500 (CDT) Received: from ftwvir01.ftw.medcity.net (mail.ftw.medcity.net [199.91.36.30]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id LAA18345 for ; Thu, 22 Apr 2004 11:08:19 -0500 (CDT) Received: from 159.139.152.113 by ftwvir01.ftw.medcity.net (InterScan E-Mail VirusWall NT); Thu, 22 Apr 2004 11:06:29 -0500 Received: by corpexcon02.hca.corpad.net with Internet Mail Service (5.5.2657.72) id ; Thu, 22 Apr 2004 11:06:57 -0500 Date: Thu, 22 Apr 2004 11:06:52 -0500 From: Tirabassi Michael Subject: RE: Field light life 21EX with MLC Sender: owner-linac-eng@plato.aristotle.net To: 'Rick Smith' , "Linac list (E-mail)" Message-id: <39A90AC123CB9D428821E2BC273E73CD01F866C2@ftwex03.hca.corpad.net> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 22 Apr 2004 11:06:52 -0500 From: Tirabassi Michael Subject: RE: Field light life 21EX with MLC Sender: owner-linac-eng@plato.aristotle.net To: 'Rick Smith' , "Linac list (E-mail)" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Rick, The sockets are your problem. I've experienced the exact same thing 21EX #1485. Basically a round pin against a flat surface inside the socket. Contact not great, heat/resistance build up. Lamp doesn't like it. Sockets are cheap from RadParts 877-704-3838. I change lamp and socket once a year. No problems since. Mike T. RCC >HI all, >I have a 21EX with 120 leaf MMLC which has been treating patients since Oct/03. I have just changed the field light for the >second time. What is the expected life for these bulbs? I would think that they should last more than 2 or 3 months. By the >way the cooling fan is working but it shuts off with the lamp, there is no time delay to further cool the bulb. I am about >to order a new lamp and socket but wondered what experience the rest of you have with this setup. >Thanks >Rick Smith  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HWL007GP4J0AA@hubbard.azu.nl>; Thu, 22 Apr 2004 20:25:52 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004042220254802532 ; Thu, 22 Apr 2004 20:25:48 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id UAA16841; Thu, 22 Apr 2004 20:25:51 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma016827; Thu, 22 Apr 2004 20:25:38 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id LAA19066 for linac-eng-list; Thu, 22 Apr 2004 11:40:15 -0500 (CDT) Received: from phsornt424.or.providence.org (phsor-nat2.providence.org [170.220.2.14]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id LAA19062 for ; Thu, 22 Apr 2004 11:40:13 -0500 (CDT) Received: from PickupDirectory by phsornt424.or.providence.org with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2653.13) id JL6F5KFW; Thu, 22 Apr 2004 09:41:04 -0700 Received: from phsorcon06.or.providence.org ([170.220.78.187]) by phsornt424.or.providence.org with Microsoft SMTPSVC(5.0.2195.2966); Thu, 22 Apr 2004 09:41:03 -0700 Received: from phsormsg01.or.providence.org ([170.220.73.29]) by phsorcon06.or.providence.org with Microsoft SMTPSVC(5.0.2195.6713); Thu, 22 Apr 2004 09:39:21 -0700 Date: Thu, 22 Apr 2004 09:39:21 -0700 From: John.Kaufman@providence.org Subject: RE: Field light life 21EX with MLC Sender: owner-linac-eng@plato.aristotle.net To: ersmith@ihis.org, linac-eng@plato.aristotle.net Message-id: <361A0F459B160A4D86EB7388D848F30E0E546A@phsormsg01.or.providence.org> MIME-version: 1.0 Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 8bit Importance: normal Precedence: bulk X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 Content-Class: urn:content-classes:message Thread-Topic: Field light life 21EX with MLC thread-index: AcQoe0CVJbohVI7RSG2mscC1NNKScQACTcIA X-OriginalArrivalTime: 22 Apr 2004 16:39:21.0492 (UTC) FILETIME=[5D0B9540:01C42888] X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id LAA19063 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 22 Apr 2004 09:39:21 -0700 From: John.Kaufman@providence.org Subject: RE: Field light life 21EX with MLC Sender: owner-linac-eng@plato.aristotle.net To: ersmith@ihis.org, linac-eng@plato.aristotle.net Importance: normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 Content-Class: urn:content-classes:message Thread-Topic: Field light life 21EX with MLC thread-index: AcQoe0CVJbohVI7RSG2mscC1NNKScQACTcIA X-OriginalArrivalTime: 22 Apr 2004 16:39:21.0492 (UTC) FILETIME=[5D0B9540:01C42888] X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id LAA19063 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Rick, I have had similar problems in the first year of having new Millenium MLC's. With some very good information from this list I was able to solve my problem. The problem results I believe from the fact that the socket is designed for a lamp with flats on one side of the contacts. The lamps used have completely round contacts. I simply and carefully filed a bit of the contact on the lamp to be flat on the side that was going to contact the metal in the socket. This provided more surface area contact to the lamp which decreased the heat generated and has now prolonged the life of the lamp. See email from Peter Vitali on 2/13/03 for details. John B Kaufman Senior Biomedical Technician Providence Portland Medical Center 503-215-5415 503-215-6397 -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Rick Smith Sent: Thursday, April 22, 2004 7:03 AM To: linac-eng@plato.aristotle.net Subject: Field light life 21EX with MLC HI all, I have a 21EX with 120 leaf MMLC which has been treating patients since Oct/03. I have just changed the field light for the second time. What is the expected life for these bulbs? I would think that they should last more than 2 or 3 months. By the way the cooling fan is working but it shuts off with the lamp, there is no time delay to further cool the bulb. I am about to order a new lamp and socket but wondered what experience the rest of you have with this setup. Thanks Rick Smith PEI Cancer Centre Charlottetown, Prince Edward Island Canada 902 894 2113 ersmith@ihis.org DISCLAIMER: This message is intended for the sole use of the addressee, and may contain information that is privileged, confidential and exempt from disclosure under applicable law. If you are not the addressee you are hereby notified that you may not use, copy, disclose, or distribute to anyone the message or any information contained in the message. If you have received this message in error, please immediately advise the sender by reply email and delete this message.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HWL007PR4MG8N@hubbard.azu.nl>; Thu, 22 Apr 2004 20:28:02 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004042220275102562 ; Thu, 22 Apr 2004 20:27:51 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id UAA17133; Thu, 22 Apr 2004 20:27:54 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma017076; Thu, 22 Apr 2004 20:27:35 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id LAA18743 for linac-eng-list; Thu, 22 Apr 2004 11:24:22 -0500 (CDT) Received: from titan.lhsc.on.ca (titan.lhsc.on.ca [142.158.2.20]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id LAA18739 for ; Thu, 22 Apr 2004 11:24:20 -0500 (CDT) Received: from mail.lrcc.on.ca (mail.lrcc.on.ca [142.158.120.242]) by titan.lhsc.on.ca (8.11.7p1+Sun/8.11.7) with SMTP id i3MGNdW21762; Thu, 22 Apr 2004 12:23:39 -0400 (EDT) Received: by mail.lrcc.on.ca(Lotus SMTP MTA v4.6.7 (934.1 12-30-1999)) id 85256E7E.005A07A6 ; Thu, 22 Apr 2004 12:23:21 -0400 Date: Thu, 22 Apr 2004 12:23:18 -0400 From: Randy.McVittie@lrcc.on.ca Subject: RE: Field light life 21EX with MLC Sender: owner-linac-eng@plato.aristotle.net To: Chris Barnardo Cc: 'Rick Smith' , linac-eng@plato.aristotle.net Message-id: <85256E7E.005A0630.00@mail.lrcc.on.ca> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Content-disposition: inline Precedence: bulk X-Lotus-FromDomain: LRCC X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 22 Apr 2004 12:23:18 -0400 From: Randy.McVittie@lrcc.on.ca Subject: RE: Field light life 21EX with MLC Sender: owner-linac-eng@plato.aristotle.net To: Chris Barnardo Cc: 'Rick Smith' , linac-eng@plato.aristotle.net Content-disposition: inline X-Lotus-FromDomain: LRCC X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f We just took delivery of 2 new 2100EX's and Varian has modified the lead shielding to make it a bit more accessible to get at the bulb (I think) You only have to take off the MLC fibreglass now. We have an older 2100CD with a MMLC and you are right it is a pain to take off all of the covers and lead to get at the bulb. I think it has only been replaced once in the past 12 months Randy "Chris Barnardo" on 2004-04-22 11:23:46 To: "'Rick Smith'" , linac-eng@plato.aristotle.net cc: (bcc: Randy McVittie/Lrcc) Subject: RE: Field light life 21EX with MLC Make sure the cabling that goes past the fan is going around the fan, not in the airflow path. Our bulbs last about 1 year when we replace them as a PM. -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net] On Behalf Of Rick Smith Sent: Thursday, April 22, 2004 8:03 AM To: linac-eng@plato.aristotle.net Subject: Field light life 21EX with MLC HI all, I have a 21EX with 120 leaf MMLC which has been treating patients since Oct/03. I have just changed the field light for the second time. What is the expected life for these bulbs? I would think that they should last more than 2 or 3 months. By the way the cooling fan is working but it shuts off with the lamp, there is no time delay to further cool the bulb. I am about to order a new lamp and socket but wondered what experience the rest of you have with this setup. Thanks Rick Smith PEI Cancer Centre Charlottetown, Prince Edward Island Canada 902 894 2113 ersmith@ihis.org  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HWL007R54QN8N@hubbard.azu.nl>; Thu, 22 Apr 2004 20:30:30 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004042220302702612 ; Thu, 22 Apr 2004 20:30:27 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id UAA17506; Thu, 22 Apr 2004 20:30:30 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xmaa17433; Thu, 22 Apr 2004 20:30:16 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id LAA19045 for linac-eng-list; Thu, 22 Apr 2004 11:39:34 -0500 (CDT) Received: from gwmail.harthosp.org (gwmail.harthosp.org [199.231.28.53]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id LAA19041 for ; Thu, 22 Apr 2004 11:39:33 -0500 (CDT) Received: from HHCC-MTA by gwmail.harthosp.org with Novell_GroupWise; Thu, 22 Apr 2004 12:38:59 -0400 Date: Thu, 22 Apr 2004 12:38:44 -0400 From: Robert Lindeyer Subject: Re: Field light life 21EX with MLC Sender: owner-linac-eng@plato.aristotle.net To: ersmith@ihis.org, linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.0.2 Content-type: text/plain; charset=US-ASCII Content-disposition: inline Content-transfer-encoding: 7bit Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 22 Apr 2004 12:38:44 -0400 From: Robert Lindeyer Subject: Re: Field light life 21EX with MLC Sender: owner-linac-eng@plato.aristotle.net To: ersmith@ihis.org, linac-eng@plato.aristotle.net Content-disposition: inline X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Rick We had the same problem with 21EX 2076. We were replacing the bulb every month. We finally replaced the lamp socket assembly and have not blown a bulb in 2 months. Knock on wood. Upon examination of the old socket I noticed that the spot welded contacts did not look as if the weld was very good. Bob >>> "Rick Smith" 04/22/04 10:02AM >>> HI all, I have a 21EX with 120 leaf MMLC which has been treating patients since Oct/03. I have just changed the field light for the second time. What is the expected life for these bulbs? I would think that they should last more than 2 or 3 months. By the way the cooling fan is working but it shuts off with the lamp, there is no time delay to further cool the bulb. I am about to order a new lamp and socket but wondered what experience the rest of you have with this setup. Thanks Rick Smith PEI Cancer Centre Charlottetown, Prince Edward Island Canada 902 894 2113 ersmith@ihis.org  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HWN00GD30TNW3@hubbard.azu.nl>; Fri, 23 Apr 2004 21:01:02 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004042321005928284 ; Fri, 23 Apr 2004 21:00:59 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id VAA11888; Fri, 23 Apr 2004 21:01:02 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma011801; Fri, 23 Apr 2004 21:00:26 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id LAA15724 for linac-eng-list; Fri, 23 Apr 2004 11:52:43 -0500 (CDT) Received: from ihis.org (peihealth.ihis.org [142.176.18.65]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id LAA15720 for ; Fri, 23 Apr 2004 11:52:39 -0500 (CDT) Received: by peihealth.ihis.org id <115690>; Fri, 23 Apr 2004 13:34:06 -0300 Date: Fri, 23 Apr 2004 13:44:48 -0300 From: Rick Smith Subject: 21EX Field light life Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <04Apr23.133406adt.115690@peihealth.ihis.org> MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 5.5.7.1 Content-type: text/plain; charset=US-ASCII Content-disposition: inline Content-transfer-encoding: 8bit Precedence: bulk X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id LAA15721 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 23 Apr 2004 13:44:48 -0300 From: Rick Smith Subject: 21EX Field light life Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Content-disposition: inline X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id LAA15721 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Thanks to all who responded, it seems that I am not the only site with a short life on these bulbs. The bulbs I am using so far have been Varian supplied and are Osram HLX 64623 longlife 12V 100W. I have ordered a new socket assembly and will see if that makes a difference. I also plan to check the voltage supplied to the lamp etc. Thanks again, As a newcomer to Linac servicing I find this list serve to be a very valuable resource. Rick Smith PEI Cancer Centre Charlottetown, PEI, Canada 902 894-2113 ersmith@ihis.org  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HWN00K2KB4P1J@hubbard.azu.nl>; Sat, 24 Apr 2004 00:43:40 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004042400433730919 ; Sat, 24 Apr 2004 00:43:37 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id AAA04372; Sat, 24 Apr 2004 00:43:40 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma004350; Sat, 24 Apr 2004 00:43:31 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id PAA21900 for linac-eng-list; Fri, 23 Apr 2004 15:51:37 -0500 (CDT) Received: from cwav01.cw.bc.ca (mail2.cw.bc.ca [207.23.159.180]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id PAA21896 for ; Fri, 23 Apr 2004 15:51:36 -0500 (CDT) Received: From server17.bccancer.bc.ca ([205.233.164.254]) by cwav01.cw.bc.ca (WebShield SMTP v4.5 MR1a); id 1082753432307; Fri, 23 Apr 2004 13:50:32 -0700 Received: by SERVER17 with Internet Mail Service (5.5.2653.19) id ; Fri, 23 Apr 2004 13:49:21 -0700 Date: Fri, 23 Apr 2004 13:53:47 -0700 From: Wayne Beckham Subject: Vacancy in British Columbia Canada for Electronics Service Techno logist Sender: owner-linac-eng@plato.aristotle.net To: 'Linac Engineers List' Cc: Cheryl Duzenli Message-id: <6BAF4D075F07D411B30900508B94CBA0114EB0ED@SERVER20> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_Saj/xAdAGY3BRid/k6P9MQ)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 23 Apr 2004 13:53:47 -0700 From: Wayne Beckham Subject: Vacancy in British Columbia Canada for Electronics Service Techno logist Sender: owner-linac-eng@plato.aristotle.net To: 'Linac Engineers List' Cc: Cheryl Duzenli X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_Saj/xAdAGY3BRid/k6P9MQ) Content-type: text/plain; charset=iso-8859-1 Hi List - I'm posting this job advert for a colleague (Dr. Cheryl Duzenli, mailto:cduzenli@bccancer.bc.ca). Please respond directly to her if you are interested. Regards. Wayne. _________________________________________ Wayne Beckham PhD, FCCPM, MACPSEM Director, Medical Physics BC Cancer Agency Vancouver Island Centre 2410 Lee Ave. Victoria, BC, CANADA V8R 6V5 Voice: +1 250 519 5620 Fax: +1 250 519 2024 mailto:WBeckham@bccancer.bc.ca RADIATION THERAPY SERVICE TECHNOLOGIST Regular Full-Time Posting # 04-HSA-44FW As an integral member of the Radiation Therapy Program team, reporting to the Medical Physics Leader, the Radiation Therapy Service Technologist performs a variety of duties related to the maintenance, repair, troubleshooting and testing on a variety of radiation therapy and related equipment. This may include but is not limited to linear accelerators, radio-isotope units and imaging equipment. QUALIFICATIONS: * Diploma from a recognized training program in Biomedical Engineering or Electronics Technology. * Minimum three (3) years of experience servicing radiation therapy equipment including completion of manufacturers' training for radiation therapy equipment OR an equivalent combination of education, training and experience acceptable to the Agency. * Demonstrable knowledge, interest and aptitude in electronics technology, physics and computers. The ideal candidate will have well developed communication skills and can work with minimal supervision. SALARY: $4107 to $5121 per month (HSA/Grid 10). Interested applicants should e-mail their resume to: cduzenli@bccancer.bc.ca or check the B.C. Cancer Agency website (www.bccancer.bc.ca) for more information. --Boundary_(ID_Saj/xAdAGY3BRid/k6P9MQ) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: quoted-printable Vacancy in British Columbia Canada for Electronics Service = Technologist

Hi List - I'm posting this job advert = for a colleague (Dr. Cheryl Duzenli, mailto:cduzenli@bccancer.bc.ca). Please respond directly to her if you are interested.

Regards. Wayne.
_________________________________________
Wayne Beckham PhD, FCCPM, = MACPSEM
Director, Medical = Physics
BC Cancer Agency
Vancouver Island = Centre
2410 Lee Ave.
Victoria, BC, CANADA V8R = 6V5
Voice: +1 250 519 = 5620
Fax: +1 250 519 2024
mailto:WBeckham@bccancer.bc.ca


RADIATION THERAPY SERVICE = TECHNOLOGIST
Regular Full-Time
Posting # 04-HSA-44FW
As an integral member of the = Radiation Therapy Program team, reporting to the Medical Physics = Leader, the Radiation Therapy Service Technologist performs a variety = of duties related to the maintenance, repair, troubleshooting and = testing on a variety of radiation therapy and related equipment.  = This may include but is not limited to linear accelerators, = radio-isotope units and imaging equipment.

 
QUALIFICATIONS:

    ·       = Diploma from a recognized = training program in Biomedical Engineering or Electronics = Technology.
    ·       = Minimum three (3) years of = experience servicing radiation therapy equipment including completion = of manufacturers' training for radiation therapy equipment OR an = equivalent combination of education, training and experience acceptable = to the Agency.

    ·       = Demonstrable knowledge, interest = and aptitude in electronics technology, physics and computers.  = The ideal candidate will have well developed communication skills and = can work with minimal supervision.

SALARY:  $4107 to = $5121 per month (HSA/Grid 10).

Interested applicants = should e-mail their resume to:

cduzenli@bccancer.bc.ca

or check the B.C. Cancer = Agency website (www.bccancer.bc.ca) for more information.

--Boundary_(ID_Saj/xAdAGY3BRid/k6P9MQ)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HWO0059V6CBMQ@hubbard.azu.nl>; Sat, 24 Apr 2004 11:57:48 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004042411574704441 ; Sat, 24 Apr 2004 11:57:47 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id LAA28428; Sat, 24 Apr 2004 11:57:51 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma028410; Sat, 24 Apr 2004 11:57:28 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id DAA27938 for linac-eng-list; Sat, 24 Apr 2004 03:05:17 -0500 (CDT) Received: from web25110.mail.ukl.yahoo.com (web25110.mail.ukl.yahoo.com [217.12.10.58]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id DAA27934 for ; Sat, 24 Apr 2004 03:05:15 -0500 (CDT) Received: from [202.92.165.12] by web25110.mail.ukl.yahoo.com via HTTP; Sat, 24 Apr 2004 09:04:40 +0100 (BST) Date: Sat, 24 Apr 2004 09:04:40 +0100 (BST) From: =?iso-8859-1?q?kim=20yeung?= Subject: Re: Varian Digital Gun Driver Sender: owner-linac-eng@plato.aristotle.net To: Linac-Eng Message-id: <20040424080440.71345.qmail@web25110.mail.ukl.yahoo.com> MIME-version: 1.0 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_YvNBvXILzwTRRdAL02A7Cg)" Content-transfer-encoding: 8BIT Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Sat, 24 Apr 2004 09:04:40 +0100 (BST) From: =?iso-8859-1?q?kim=20yeung?= Subject: Re: Varian Digital Gun Driver Sender: owner-linac-eng@plato.aristotle.net To: Linac-Eng X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f --Boundary_(ID_YvNBvXILzwTRRdAL02A7Cg) Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 8bit Hi Colleagues, Recently, we replaced an IC , U3, on the gun control pcb, and an error message of "B Cfg" showed on the display. This requires initialisation of memory and processing of filament, grid and high voltage. We only replace the IC why do we need to do the initialisation and processing? Any advice? Best regards, Kim Yeung --------------------------------- Yahoo! Messenger - Communicate instantly..."Ping" your friends today! Download Messenger Now --Boundary_(ID_YvNBvXILzwTRRdAL02A7Cg) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: 8bit
Hi Colleagues,
 
Recently, we replaced an IC , U3, on the gun control pcb, and an error message of "B Cfg" showed on the display. This requires initialisation of memory and processing of filament, grid and high voltage.
 
We only replace the IC why do we need to do the initialisation and processing?
 
Any advice?
 
Best regards,
 
Kim Yeung 

 Yahoo! Messenger - Communicate instantly..."Ping" your friends today! Download Messenger Now --Boundary_(ID_YvNBvXILzwTRRdAL02A7Cg)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HWP00CGA4S1NF@hubbard.azu.nl> for jkok@sims-ms-daemon; Sun, 25 Apr 2004 00:21:38 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004042500213711996 for ; Sun, 25 Apr 2004 00:21:37 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id AAA01995 for ; Sun, 25 Apr 2004 00:21:41 +0200 (MET DST) Received: from smtp.jiscmail.ac.uk(130.246.192.48) by armstrong.azu.nl via smap (V1.3) id xma001983; Sun, 25 Apr 2004 00:21:32 +0200 Received: from LISTSERV.JISCMAIL.AC.UK (jiscmail.ac.uk) by smtp.jiscmail.ac.uk (LSMTP for Windows NT v1.1b) with SMTP id <0.0041DE17@smtp.jiscmail.ac.uk>; Sat, 24 Apr 2004 23:21:24 +0100 Received: from JISCMAIL.AC.UK by JISCMAIL.AC.UK (LISTSERV-TCP/IP release 1.8e) with spool id 36292882 for MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK; Sat, 24 Apr 2004 23:21:24 +0100 Received: from 130.246.192.52 by JISCMAIL.AC.UK (SMTPL release 1.0i) with TCP; Sat, 24 Apr 2004 23:21:24 +0100 Received: from mta06-svc.ntlworld.com (mta06-svc.ntlworld.com [62.253.162.46]) by kili.jiscmail.ac.uk (8.12.8/8.12.8) with ESMTP id i3OMKBxk027202 for ; Sat, 24 Apr 2004 23:21:18 +0100 Received: from RuthsPortable ([213.107.169.71]) by mta06-svc.ntlworld.com (InterMail vM.4.01.03.37 201-229-121-137-20020806) with ESMTP id <20040423130844.DHVP29585.mta06-svc.ntlworld.com@RuthsPortable> for ; Fri, 23 Apr 2004 14:08:44 +0100 Date: Fri, 23 Apr 2004 14:08:10 +0100 From: George Corner Subject: Re: the IPEM and AfC In-reply-to: <10ADED4909C8674391B2C9347AEA5729186898@india.velindre-tr.wales.nhs.uk> Sender: Discussion amongst academic Medical Physics in the UK To: MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK Reply-to: Discussion amongst academic Medical Physics in the UK Message-id: <00ab01c42934$17a05c00$6501a8c0@RuthsPortable> Organization: Sa'git Racing MIME-version: 1.0 X-Mailer: Microsoft Outlook, Build 10.0.2616 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_WaquUc5kE+vS9epgSM45VA)" Importance: Normal Precedence: list X-RAL-MFrom: X-RAL-Connect: X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 X-CCLRC-SPAM-report: -4.587 : BAYES_00,HTML_60_70,HTML_FONTCOLOR_BLUE,HTML_MESSAGE X-Scanned-By: MIMEDefang 2.39 X-Priority: 3 (Normal) *** EOOH *** Date: Fri, 23 Apr 2004 14:08:10 +0100 From: George Corner Subject: Re: the IPEM and AfC In-reply-to: <10ADED4909C8674391B2C9347AEA5729186898@india.velindre-tr.wales.nhs.uk> Sender: Discussion amongst academic Medical Physics in the UK To: MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK Reply-to: Discussion amongst academic Medical Physics in the UK Organization: Sa'git Racing Importance: Normal X-RAL-MFrom: X-RAL-Connect: X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 X-CCLRC-SPAM-report: -4.587 : BAYES_00,HTML_60_70,HTML_FONTCOLOR_BLUE,HTML_MESSAGE X-Scanned-By: MIMEDefang 2.39 X-Priority: 3 (Normal) This is a multi-part message in MIME format. --Boundary_(ID_WaquUc5kE+vS9epgSM45VA) Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 7bit It might be very important on whose behalf the "expert" is there. If he is Union rep he might put a very different slant on evidence from a management view. I doubt if one person could be completely impartial. Geo Corner From: Discussion amongst academic Medical Physics in the UK [mailto:MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK] On Behalf Of Tony Millin Sent: 23 April 2004 12:39 To: MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK Subject: Re: the IPEM and AfC My understanding of the process and it is true in all the trusts that I am aware of that physicists will not be on matching and evaluation panels for physicists nor nurses for nurses etc. It will however be possible for knowledgable staff (heads of departments and the indivdiduals themselves) to provide information to the panel which should be enough for the panel to make the correct match / evaluation. However as there are humans involved there are likely to be mistakes one way or the other and the main source of information will be the job description and person spec provided. Therefore it would benefit all departments if there is a person within the department trained for job matching and / or evaluation who can provide some advice in the drawing up of job descriptions etc. This could be the union rep HPA or whatever or from management side or even both. --Boundary_(ID_WaquUc5kE+vS9epgSM45VA) Content-type: text/html; charset=us-ascii Content-transfer-encoding: quoted-printable Message
It=20 might be very important on whose behalf the "expert" is there. If he is = Union=20 rep he might put a very different slant on evidence from a management = view. I=20 doubt if one person could be completely impartial.
 
Geo=20 Corner
 

From: Discussion amongst = academic=20 Medical Physics in the UK = [mailto:MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK]=20 On Behalf Of Tony Millin
Sent: 23 April 2004=20 12:39
To:=20 MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK
Subject: Re: the = IPEM and=20 AfC

 
My=20 understanding of the process and it is true in all the trusts = that I am=20 aware of that physicists will not be on matching and evaluation panels = for=20 physicists nor nurses for nurses etc. It will however be possible for=20 knowledgable staff (heads of departments and the indivdiduals = themselves) to=20 provide information to the panel which should be enough for the panel = to make=20 the correct match / evaluation. However as there are humans involved = there are=20 likely to be mistakes one way or the other and the main source of = information=20 will be the job description and person spec provided. Therefore it = would=20 benefit all departments if there is a person within the department = trained for=20 job matching and / or evaluation who can provide some advice in the = drawing up=20 of job descriptions etc. This could be the union rep HPA or whatever = or from=20 management side or even both.
 
 
 
--Boundary_(ID_WaquUc5kE+vS9epgSM45VA)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HWS00CYRJYOCF@hubbard.azu.nl>; Mon, 26 Apr 2004 20:42:29 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004042620422621608 ; Mon, 26 Apr 2004 20:42:26 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id UAA15947; Mon, 26 Apr 2004 20:42:33 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma015919; Mon, 26 Apr 2004 20:42:20 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id LAA00340 for linac-eng-list; Mon, 26 Apr 2004 11:43:58 -0500 (CDT) Received: from pimout5-ext.prodigy.net (pimout5-ext.prodigy.net [207.115.63.73]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id LAA00336 for ; Mon, 26 Apr 2004 11:43:53 -0500 (CDT) Received: from home.ameritech.net (adsl-67-39-201-13.dsl.bcvloh.ameritech.net [67.39.201.13]) by pimout5-ext.prodigy.net (8.12.10/8.12.10) with ESMTP id i3QFh4ct043634 for ; Mon, 26 Apr 2004 11:43:04 -0400 Date: Mon, 26 Apr 2004 11:43:12 -0400 From: Scott Mange Subject: J19 to J18 Jumper Sender: owner-linac-eng@plato.aristotle.net X-Sender: smange@mailhost.cle.ameritech.net To: linac-eng@plato.aristotle.net Message-id: <5.1.1.6.2.20040426114117.00a0c5f0@mailhost.cle.ameritech.net> MIME-version: 1.0 X-Mailer: QUALCOMM Windows Eudora Version 5.1.1 Content-type: MULTIPART/MIXED; BOUNDARY="Boundary_(ID_MYUb6pZEuTb8jIMdS4riyA)"; x-avg-checked=avg-ok-6465448B Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 26 Apr 2004 11:43:12 -0400 From: Scott Mange Subject: J19 to J18 Jumper Sender: owner-linac-eng@plato.aristotle.net X-Sender: smange@mailhost.cle.ameritech.net To: linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f --Boundary_(ID_MYUb6pZEuTb8jIMdS4riyA) Content-type: text/plain; format=flowed; charset=us-ascii; x-avg-checked=avg-ok-6465448B Content-transfer-encoding: 8bit Dear Engineers, I'm not an engineer but need your help with this question. On our Varian clinac 1800 inside the little slide out control cabinet next to the console that has all the PCB boards - what is the effect on the linac if one jumpers J19 to J18? Or put another way, should these two measurement points be jumpered together? If not, why not? I have found that disconnecting the jumper causes at least the electrons to not run. I don't get any other error messages on the display panel either. When I try to make it run with the jumper off, the timer counts up but no rads. Put it back, it works find. Thank you very much in advance for your help with this. Sincerely, Scott Mange --Boundary_(ID_MYUb6pZEuTb8jIMdS4riyA) Content-type: text/plain; x-avg-checked=avg-ok-6465448B; x-avg=cert; charset=us-ascii Content-disposition: inline --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.663 / Virus Database: 426 - Release Date: 4/20/04 --Boundary_(ID_MYUb6pZEuTb8jIMdS4riyA)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HWS00C26K4HCF@hubbard.azu.nl>; Mon, 26 Apr 2004 20:45:55 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004042620455321651 ; Mon, 26 Apr 2004 20:45:53 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id UAA16265; Mon, 26 Apr 2004 20:45:59 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma016211; Mon, 26 Apr 2004 20:45:22 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id LAA00106 for linac-eng-list; Mon, 26 Apr 2004 11:37:26 -0500 (CDT) Received: from web25105.mail.ukl.yahoo.com (web25105.mail.ukl.yahoo.com [217.12.10.53]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id LAA29995 for ; Mon, 26 Apr 2004 11:37:21 -0500 (CDT) Received: from [202.92.164.39] by web25105.mail.ukl.yahoo.com via HTTP; Mon, 26 Apr 2004 13:32:38 +0100 (BST) Date: Mon, 26 Apr 2004 13:32:38 +0100 (BST) From: =?iso-8859-1?q?kim=20yeung?= Subject: Re: Varian Digital Gun Deck Sender: owner-linac-eng@plato.aristotle.net To: Linac-Eng Message-id: <20040426123238.57301.qmail@web25105.mail.ukl.yahoo.com> MIME-version: 1.0 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_njpn/qzp0z5lsyEN0fug+A)" Content-transfer-encoding: 8BIT Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 26 Apr 2004 13:32:38 +0100 (BST) From: =?iso-8859-1?q?kim=20yeung?= Subject: Re: Varian Digital Gun Deck Sender: owner-linac-eng@plato.aristotle.net To: Linac-Eng X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f --Boundary_(ID_njpn/qzp0z5lsyEN0fug+A) Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 8bit Hi Colleagues, Recently, we replaced one IC, U3 (FPGA), on the gun control pcb, and an error message of "B Cfg" showed on the display. This requires initialisation of memory and processing of filament, grid and high voltage. Could anyone advise what information is stored in the U3 and why we need to do the initialisation and processing? Any advice? Best regards, Kim Yeung --------------------------------- Yahoo! Messenger - Communicate instantly..."Ping" your friends today! Download Messenger Now --Boundary_(ID_njpn/qzp0z5lsyEN0fug+A) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: 8bit
 Hi Colleagues,
 
Recently, we replaced one IC, U3 (FPGA), on the gun control pcb, and an error message of "B Cfg" showed on the display. This requires initialisation of memory and processing of filament, grid and high voltage.
 
Could anyone advise what information is stored in the U3 and why we  need to do the initialisation and processing?
 
Any advice?
 
Best regards,
 
Kim Yeung 

Yahoo! Messenger - Communicate instantly..."Ping" your friends today! Download Messenger Now --Boundary_(ID_njpn/qzp0z5lsyEN0fug+A)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HWS00E9NQF063@hubbard.azu.nl>; Mon, 26 Apr 2004 23:01:49 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004042623014724356 ; Mon, 26 Apr 2004 23:01:47 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id XAA04916; Mon, 26 Apr 2004 23:01:53 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma004856; Mon, 26 Apr 2004 23:01:21 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id OAA02883 for linac-eng-list; Mon, 26 Apr 2004 14:06:29 -0500 (CDT) Received: from msgia.hs.uab.edu (gw5.uabmc.edu [164.111.37.252]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id OAA02879 for ; Mon, 26 Apr 2004 14:06:28 -0500 (CDT) Received: from INET-MTA by msgia.hs.uab.edu with Novell_GroupWise; Mon, 26 Apr 2004 14:05:57 -0500 Date: Mon, 26 Apr 2004 14:05:39 -0500 From: Stephen Jordan Subject: Motor generators for Linacs Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.5.1 Content-type: text/plain; charset=US-ASCII Content-disposition: inline Content-transfer-encoding: 7bit Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 26 Apr 2004 14:05:39 -0500 From: Stephen Jordan Subject: Motor generators for Linacs Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Content-disposition: inline X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f We currently utilize a Georator model 37-585-1 480vac in our department of 3 Varian linacs. The only issue we have had in the past (and not yet resolved) is during beam on state of 2 (not 1 or 3) Linacs, there is a slight bit of oscillation present in the generator output. My department Chief Physicist designed a circuit to alleviate some of this, but it still occurs to a small degree. My situation is this: We are planning a new building on the same electrical grid, with 4 linacs, a tomotherapy unit, etc. The "newer" style Georator has a different style, "potted" regulator that we cannot modify if needed. Hospital Administration would love to save $70K by omitting the MG, but I'd rather have it. I'm afraid that if we push the MG purchase, the "new" style will oscillate to the point of uselessness, thereby ruining my credibilty : ) Has anyone purchased a Motor Generator set in the last 5 years? What manufacturer? How many Linacs are in your department? Thanks for the help! Steve Jordan UAB Rad Physics  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HWS00F0PTH28K@hubbard.azu.nl>; Tue, 27 Apr 2004 00:07:52 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004042700074925355 ; Tue, 27 Apr 2004 00:07:49 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id AAA12181; Tue, 27 Apr 2004 00:07:55 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma012161; Tue, 27 Apr 2004 00:07:30 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id PAA03848 for linac-eng-list; Mon, 26 Apr 2004 15:13:50 -0500 (CDT) Received: from gwia.slrmc.org (gwia.slrmc.org [199.99.194.3]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id PAA03844 for ; Mon, 26 Apr 2004 15:13:49 -0500 (CDT) Received: from SL_DOM-MTA by gwia.slrmc.org with Novell_GroupWise; Mon, 26 Apr 2004 09:13:00 -0600 Date: Mon, 26 Apr 2004 09:12:56 -0600 From: Randy Niccolls Subject: 21EX Digital Gun Deck Parameters Sender: owner-linac-eng@plato.aristotle.net To: " Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.5.1 Content-type: text/plain; charset=US-ASCII Content-disposition: inline Content-transfer-encoding: 7bit Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 26 Apr 2004 09:12:56 -0600 From: Randy Niccolls Subject: 21EX Digital Gun Deck Parameters Sender: owner-linac-eng@plato.aristotle.net To: " Content-disposition: inline X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f I heard there was a way to get the gun deck parameters using a laptop and hyperterminal with a straight through serial cable. Has any body done this and if so what are the settings for the baud rate, parity, stop bits, etc... for Hyperterminal and any other things to note. We have two Varian 21EX's S/N 1904 and 2306. Any imput would be appreciated. Thankyou. Randy Niccolls Linac Engineer Mountain States Tumor Institute Boise, Idaho "This message is intended for the use of the person or entity to which it is addressed and may contain information that is confidential or privileged, the disclosure of which is governed by applicable law. If the reader of this message is not the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this information is strictly prohibited. If you have received this message by error, please notify us immediately and destroy the related message."  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HWU00ET10Q1JI@hubbard.azu.nl>; Tue, 27 Apr 2004 15:42:16 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004042715420815888 ; Tue, 27 Apr 2004 15:42:08 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id PAA27525; Tue, 27 Apr 2004 15:42:14 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma027352; Tue, 27 Apr 2004 15:41:33 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id GAA13582 for linac-eng-list; Tue, 27 Apr 2004 06:55:57 -0500 (CDT) Received: from titan.lhsc.on.ca (titan.lhsc.on.ca [142.158.2.20]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id GAA13578 for ; Tue, 27 Apr 2004 06:55:56 -0500 (CDT) Received: from mail.lrcc.on.ca (mail.lrcc.on.ca [142.158.120.242]) by titan.lhsc.on.ca (8.11.7p1+Sun/8.11.7) with SMTP id i3RBtMW07221; Tue, 27 Apr 2004 07:55:22 -0400 (EDT) Received: by mail.lrcc.on.ca(Lotus SMTP MTA v4.6.7 (934.1 12-30-1999)) id 85256E83.004178BC ; Tue, 27 Apr 2004 07:55:07 -0400 Date: Tue, 27 Apr 2004 07:55:05 -0400 From: Randy.McVittie@lrcc.on.ca Subject: Re: 21EX Digital Gun Deck Parameters Sender: owner-linac-eng@plato.aristotle.net To: Randy Niccolls Cc: " Message-id: <85256E83.00417834.00@mail.lrcc.on.ca> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Content-disposition: inline Precedence: bulk X-Lotus-FromDomain: LRCC X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 27 Apr 2004 07:55:05 -0400 From: Randy.McVittie@lrcc.on.ca Subject: Re: 21EX Digital Gun Deck Parameters Sender: owner-linac-eng@plato.aristotle.net To: Randy Niccolls Cc: " Content-disposition: inline X-Lotus-FromDomain: LRCC X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f I have 5 200CD (C3) vintage machines, but I think the EX uses all of the same hardware Cold Deck side of the Gun Deck J13 is where you can connect your PC, but it is a pain to have to remove the fibreglass, and Gun Deck plate. You can also hook a serial cable into Aux Electronics J51 to get the serial data as well. Varian usually ships a 9 pin serial cable that is pulled from the Stand to the Console area. The Stand end is usullay left coiled up on the pulse transformer. If you connect this to J51 then you can hook your computer up at the console area. We have done this on all of our machines and it is handy to quickly record values. The communication protocol is 9600 8N1. Good Luck Randy McVittie London Regional Cancer Centre/London Health Science Centre 790 Commissioners Road East London, Ontario CANADA N6A 4L6 "Randy Niccolls" on 2004-04-26 11:12:56 To: " cc: (bcc: Randy McVittie/Lrcc) Subject: 21EX Digital Gun Deck Parameters I heard there was a way to get the gun deck parameters using a laptop and hyperterminal with a straight through serial cable. Has any body done this and if so what are the settings for the baud rate, parity, stop bits, etc... for Hyperterminal and any other things to note. We have two Varian 21EX's S/N 1904 and 2306. Any imput would be appreciated. Thankyou. Randy Niccolls Linac Engineer Mountain States Tumor Institute Boise, Idaho "This message is intended for the use of the person or entity to which it is addressed and may contain information that is confidential or privileged, the disclosure of which is governed by applicable law. If the reader of this message is not the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this information is strictly prohibited. If you have received this message by error, please notify us immediately and destroy the related message."  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HWU00LL76QUPI@hubbard.azu.nl>; Tue, 27 Apr 2004 17:52:11 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004042717520420613 ; Tue, 27 Apr 2004 17:52:04 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id RAA24558; Tue, 27 Apr 2004 17:52:10 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma024512; Tue, 27 Apr 2004 17:51:39 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id IAA14355 for linac-eng-list; Tue, 27 Apr 2004 08:21:43 -0500 (CDT) Received: from mail2.tenethealth.com (mail2.tenethealth.com [199.222.14.8]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id IAA14349 for ; Tue, 27 Apr 2004 08:21:41 -0500 (CDT) Received: from cscan1.tenethealth.com (cscan1.tenethealth.com [172.18.167.80]) by mail2.tenethealth.com (8.11.6/8.11.6) with ESMTP id i3RDLA902192; Tue, 27 Apr 2004 08:21:10 -0500 Received: from 172.18.167.162 by cscan1.tenethealth.com with SMTP (Tenet Healthcare CF SMTP Relay (MMS v5.5.3)); Tue, 27 Apr 2004 08:21:06 -0500 Received: from tenhdcthemx51.tenethealth.net(172.18.167.215) by tenhdcthvscan02.tenethealth.net via csmap id ba5bfc64_984d_11d8_87b6_0002b3d786d7_29815; Tue, 27 Apr 2004 08:21:01 -0500 (CDT) Received: from tenbmcthemx01.tenethealth.net ([10.30.2.48]) by tenhdcthemx51.tenethealth.net with Microsoft SMTPSVC(5.0.2195.6713); Tue, 27 Apr 2004 08:21:00 -0500 Date: Tue, 27 Apr 2004 08:20:59 -0500 From: "Kyle, John" Subject: RE: 21EX Digital Gun Deck Parameters Sender: owner-linac-eng@plato.aristotle.net To: Randy Niccolls , " Message-id: MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 8bit Precedence: bulk X-MimeOLE: Produced By Microsoft Exchange V6.0.6249.0 content-class: urn:content-classes:message Thread-Topic: 21EX Digital Gun Deck Parameters Thread-Index: AcQr3EsY+SrXxSrtSFuAEavEi0yxogAfdMnw X-OriginalArrivalTime: 27 Apr 2004 13:21:00.0810 (UTC) FILETIME=[7BC05EA0:01C42C5A] X-WSS-ID: 6C9081C86779117-01-01 X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id IAA14350 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 27 Apr 2004 08:20:59 -0500 From: "Kyle, John" Subject: RE: 21EX Digital Gun Deck Parameters Sender: owner-linac-eng@plato.aristotle.net To: Randy Niccolls , " X-MimeOLE: Produced By Microsoft Exchange V6.0.6249.0 content-class: urn:content-classes:message Thread-Topic: 21EX Digital Gun Deck Parameters Thread-Index: AcQr3EsY+SrXxSrtSFuAEavEi0yxogAfdMnw X-OriginalArrivalTime: 27 Apr 2004 13:21:00.0810 (UTC) FILETIME=[7BC05EA0:01C42C5A] X-WSS-ID: 6C9081C86779117-01-01 X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id IAA14350 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f That is true. I have done this with the Varian rep. I will try to find out exactly how to do it then post the info. -----Original Message----- From: Randy Niccolls [mailto:niccollr@slrmc.org] Sent: Monday, April 26, 2004 10:13 AM To: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HWV00CYO7LCVD@hubbard.azu.nl>; Wed, 28 Apr 2004 07:08:02 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004042807080030575 ; Wed, 28 Apr 2004 07:08:00 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id HAA12853; Wed, 28 Apr 2004 07:08:07 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma012841; Wed, 28 Apr 2004 07:07:58 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id WAA29189 for linac-eng-list; Tue, 27 Apr 2004 22:25:44 -0500 (CDT) Received: from [203.5.110.194] (burnia.dmz.health.nsw.gov.au [203.5.110.252]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id WAA29185 for ; Tue, 27 Apr 2004 22:25:41 -0500 (CDT) Received: from bablia.ccf.health.nsw.gov.au by [203.5.110.194] via smtpd (for plato.aristotle.net [206.66.224.2]) with SMTP; Wed, 28 Apr 2004 13:26:49 +1000 Received: from isenguard.mater.health.nsw.gov.au ([10.16.131.3]) by health.nsw.gov.au (PMDF V6.0-24 #44005) with SMTP id <01L9GR33CX2Q0067QI@health.nsw.gov.au> for linac-eng@plato.aristotle.net; Wed, 28 Apr 2004 13:23:05 -0500 (EST) Received: from 10.16.131.90 by isenguard.mater.health.nsw.gov.au (InterScan E-Mail VirusWall NT); Wed, 28 Apr 2004 13:21:08 +1000 Received: from MATER-MTA by rivendell.mater.health.nsw.gov.au with Novell_GroupWise; Wed, 28 Apr 2004 08:20:04 +1000 Date: Wed, 28 Apr 2004 08:19:59 +1000 From: Electronics Mater Subject: Re: J19 to J18 Jumper Sender: owner-linac-eng@plato.aristotle.net To: smange@ameritech.net, linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.5.1 Content-type: text/plain; charset=US-ASCII Content-disposition: inline Content-transfer-encoding: 7bit Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 28 Apr 2004 08:19:59 +1000 From: Electronics Mater Subject: Re: J19 to J18 Jumper Sender: owner-linac-eng@plato.aristotle.net To: smange@ameritech.net, linac-eng@plato.aristotle.net Content-disposition: inline X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hi Scott, These connection points are used for manual control of gun motor pot. ie: By installing a jumper between J18 & J19 you are enabling the gun motor pot power indefinitely, so that you can change the gun-I program value whilst beam is on. Under normal operating conditions, nothing is installed in these jumpers and a relay K4 on B17 ( arc,trig cont pcb ) in the cardrack is enabled for approx 20 sec's when you mode up an energy, to allow auto programming of these preset values for each energy. After this time out, power is removed to the motor so that gun-I programming cannot be altered during beam on. I believe the jumper should not be installed for normal treatment conditions, as it is defeating the purpose of the circuit. If you need to have jumper installed for machine to work, I would start at relay previously mentioned. Karl Stansfield Biomed Dept Newcastle Mater Hospital NSW Australia.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HWV00H8MB9JEB@hubbard.azu.nl>; Wed, 28 Apr 2004 08:27:39 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004042808273132009 ; Wed, 28 Apr 2004 08:27:31 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id IAA21384; Wed, 28 Apr 2004 08:27:38 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma021271; Wed, 28 Apr 2004 08:27:15 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id XAA00201 for linac-eng-list; Tue, 27 Apr 2004 23:52:37 -0500 (CDT) Received: from [203.5.110.194] (burnia.dmz.health.nsw.gov.au [203.5.110.252]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id XAA00197 for ; Tue, 27 Apr 2004 23:52:34 -0500 (CDT) Received: from bablia.ccf.health.nsw.gov.au by [203.5.110.194] via smtpd (for plato.aristotle.net [206.66.224.2]) with SMTP; Wed, 28 Apr 2004 14:53:42 +1000 Received: from isenguard.mater.health.nsw.gov.au ([10.16.131.3]) by health.nsw.gov.au (PMDF V6.0-24 #44005) with SMTP id <01L9GU5WI99U0067QI@health.nsw.gov.au> for linac-eng@plato.aristotle.net; Wed, 28 Apr 2004 14:50:57 -0500 (EST) Received: from 10.16.131.90 by isenguard.mater.health.nsw.gov.au (InterScan E-Mail VirusWall NT); Wed, 28 Apr 2004 14:49:48 +1000 Received: from MATER-MTA by rivendell.mater.health.nsw.gov.au with Novell_GroupWise; Wed, 28 Apr 2004 14:49:48 +1000 Date: Wed, 28 Apr 2004 14:49:40 +1000 From: Electronics Mater Subject: Re: J19 to J18 Jumper Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.5.1 Content-type: text/plain; charset=US-ASCII Content-disposition: inline Content-transfer-encoding: 7bit Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 28 Apr 2004 14:49:40 +1000 From: Electronics Mater Subject: Re: J19 to J18 Jumper Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Content-disposition: inline X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hi Scott, These connection points are used for manual control of gun motor pot. ie: By installing a jumper between J18 & J19 you are enabling the gun motor pot power indefinitely, so that you can change the gun-I program value whilst beam is on. Under normal operating conditions, nothing is installed in these jumpers and a relay K4 on B17 ( arc,trig cont pcb ) in the cardrack is enabled for approx 20 sec's when you mode up an energy, to allow auto programming of these preset values for each energy. After this time out, power is removed to the motor so that gun-I programming cannot be altered during beam on. I believe the jumper should not be installed for normal treatment conditions, as it is defeating the purpose of the circuit. If you need to have jumper installed for machine to work, I would start at relay previously mentioned. Karl Stansfield Biomed Dept Newcastle Mater Hospital NSW Australia.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HWV0001ZRDU5U@hubbard.azu.nl>; Wed, 28 Apr 2004 14:21:11 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004042814200512150 ; Wed, 28 Apr 2004 14:20:05 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id OAA01286; Wed, 28 Apr 2004 14:20:12 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma001184; Wed, 28 Apr 2004 14:19:36 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id FAA02904 for linac-eng-list; Wed, 28 Apr 2004 05:38:58 -0500 (CDT) Received: from intfw1.phci.org (user.phci.org [207.67.109.70]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id FAA02900 for ; Wed, 28 Apr 2004 05:38:56 -0500 (CDT) Received: from intfw1.phci.org (root@localhost) by intfw1.phci.org with ESMTP id i3SAcM2R012409 for ; Wed, 28 Apr 2004 05:38:22 -0500 (CDT) Received: from zixvpm00.phci.org (zixvpm02.phci.org [172.20.3.22]) by intfw1.phci.org with ESMTP id i3SAcMTo012406 for ; Wed, 28 Apr 2004 05:38:22 -0500 (CDT) Received: from zixvpm02.phci.org (ZixVPM [127.0.0.1]) by Outbound.phci.org (Proprietary) with ESMTP id BF2B51C0071 for ; Wed, 28 Apr 2004 05:38:21 -0500 (CDT) Received: from smtpscan.phci.org (smtpscan.phci.org [172.20.3.10]) by zixvpm00.phci.org (Proprietary) with SMTP id 241891A407D; Wed, 28 Apr 2004 05:38:19 -0500 (CDT) Received: from wmhmail1.phci.org ([IP=10.1.1.28]) by eSafe SMTP Relay 1083146590; Wed Apr 28 06:01:28 2004 Received: by wmhmail1.phci.org with Internet Mail Service (5.5.2657.72) id <234GXTC7>; Wed, 28 Apr 2004 05:38:15 -0500 Date: Wed, 28 Apr 2004 05:38:14 -0500 From: "Williams, Rod" Subject: RE: 21EX Digital Gun Deck Parameters Sender: owner-linac-eng@plato.aristotle.net To: "'Randy.McVittie@lrcc.on.ca'" , Randy Niccolls Cc: " Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_Pa6WfT51nEqb5kGPm9j1xQ)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 28 Apr 2004 05:38:14 -0500 From: "Williams, Rod" Subject: RE: 21EX Digital Gun Deck Parameters Sender: owner-linac-eng@plato.aristotle.net To: "'Randy.McVittie@lrcc.on.ca'" , Randy Niccolls Cc: " X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_Pa6WfT51nEqb5kGPm9j1xQ) Content-type: text/plain; charset=iso-8859-1 Very Cool I wish my local service or even the installers would have told me about this. Hooked it up this AM used the the MLC Computer saved the selected Es to a text file. A great short cut for PMs. Thanks.!!!!! I have 5 200CD (C3) vintage machines, but I think the EX uses all of the same hardware Cold Deck side of the Gun Deck J13 is where you can connect your PC, but it is a pain to have to remove the fibreglass, and Gun Deck plate. You can also hook a serial cable into Aux Electronics J51 to get the serial data as well. Varian usually ships a 9 pin serial cable that is pulled from the Stand to the Console area. The Stand end is usullay left coiled up on the pulse transformer. If you connect this to J51 then you can hook your computer up at the console area. We have done this on all of our machines and it is handy to quickly record values. The communication protocol is 9600 8N1. Good Luck Randy McVittie London Regional Cancer Centre/London Health Science Centre 790 Commissioners Road East London, Ontario CANADA N6A 4L6 "Randy Niccolls" on 2004-04-26 11:12:56 To: " cc: (bcc: Randy McVittie/Lrcc) Subject: 21EX Digital Gun Deck Parameters I heard there was a way to get the gun deck parameters using a laptop and hyperterminal with a straight through serial cable. Has any body done this and if so what are the settings for the baud rate, parity, stop bits, etc... for Hyperterminal and any other things to note. We have two Varian 21EX's S/N 1904 and 2306. Any imput would be appreciated. Thankyou. Randy Niccolls Linac Engineer Mountain States Tumor Institute Boise, Idaho "This message is intended for the use of the person or entity to which it is addressed and may contain information that is confidential or privileged, the disclosure of which is governed by applicable law. If the reader of this message is not the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this information is strictly prohibited. If you have received this message by error, please notify us immediately and destroy the related message." This information is confidential and intended solely for the use of the individual or entity to whom it is addressed. If you have received this email in error please notify the sender or our Customer Support Center at (262) 928-2777. We have scanned this email and its attachments for malicious content. However, the recipient should check this email and any attachments for the presence of viruses. ProHealth Care accepts no liability for any damage caused by any virus transmitted by this email. --Boundary_(ID_Pa6WfT51nEqb5kGPm9j1xQ) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: quoted-printable RE: 21EX Digital Gun Deck Parameters

Very Cool

I wish my local service or even the installers would ha= ve told me about this. Hooked it up this AM used the the MLC Computer sav= ed the selected Es to a text file. A great short cut for PMs.

Thanks.!!!!!




I have 5 200CD (C3) vintage machines, but I think the E= X uses all of the same
hardware


Cold Deck side of the Gun Deck J13 is where you can con= nect your PC, but it is a
pain to have to remove the
fibreglass, and Gun Deck plate.

You can also hook a serial cable into Aux Electronics J= 51 to get the serial data
as well.

Varian usually ships a 9 pin serial cable that is pulle= d from the Stand to the
Console area.  The Stand
end is usullay left coiled up on the pulse transformer= =2E  If you connect this to
J51 then you can hook your computer up
at the console area.  We have done this on all of= our machines and it is handy
to quickly record values.

The communication protocol is 9600 8N1.


Good Luck

Randy McVittie
London Regional Cancer Centre/London Health Science Ce= ntre
790 Commissioners Road East
London, Ontario
CANADA
N6A 4L6







"Randy Niccolls" <niccollr@slrmc.org> o= n 2004-04-26 11:12:56

To:   "<Linac-Eng" <linac-eng= @plato.aristotle.net>
cc:    (bcc: Randy McVittie/Lrcc)

Subject:  21EX Digital Gun Deck Parameters



I heard there was a way to get the gun deck parameters = using a laptop
and hyperterminal with a straight through serial cable= =2E Has any body
done this and if so what are the settings for the baud= rate, parity,
stop bits, etc... for Hyperterminal and any other thin= gs to note. We
have two Varian 21EX's  S/N 1904 and 2306. Any im= put would be
appreciated. Thankyou.

Randy Niccolls
Linac Engineer
Mountain States Tumor Institute
Boise, Idaho

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--Boundary_(ID_Pa6WfT51nEqb5kGPm9j1xQ)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HWW00IX9T8NF0@hubbard.azu.nl>; Thu, 29 Apr 2004 03:53:13 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004042903531029741 ; Thu, 29 Apr 2004 03:53:10 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id DAA04104; Thu, 29 Apr 2004 03:53:17 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma004095; Thu, 29 Apr 2004 03:53:14 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id TAA17751 for linac-eng-list; Wed, 28 Apr 2004 19:15:16 -0500 (CDT) Received: from adl0133.systems.sa.gov.au (adl0133.systems.sa.gov.au [143.216.236.20]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id TAA17747 for ; Wed, 28 Apr 2004 19:15:14 -0500 (CDT) Received: from adl0133.systems.sa.gov.au (localhost [127.0.0.1]) by adl0133.systems.sa.gov.au OUTGOING (8.12.10/8.12.7) with ESMTP id i3T0Eevx017549 for ; Thu, 29 Apr 2004 09:44:41 +0930 (CST) Received: from rahsun153.rah.sa.gov.au (mailhub.rah.sa.gov.au [10.19.241.188]) by adl0133.systems.sa.gov.au INCOMING (8.12.10/8.12.7) with ESMTP id i3T0Eek6017540 for ; Thu, 29 Apr 2004 09:44:40 +0930 (CST) Received: from mail.rah.sa.gov.au (MERCURY-1 [10.19.241.90]) by rahsun153.rah.sa.gov.au (8.12.9/8.12.8) with ESMTP id i3T0EaqR026618 for ; Thu, 29 Apr 2004 09:44:40 +0930 (CST) Received: from Spooler by mail.rah.sa.gov.au (Mercury/32 v4.01a) ID MO0004AD; Thu, 29 Apr 2004 09:44:40 +0930 Received: from spooler by mail.rah.sa.gov.au (Mercury/32 v4.01a); Thu, 29 Apr 2004 09:44:34 +0930 Date: Thu, 29 Apr 2004 09:38:39 +0930 From: Andrew Frolov Subject: Enhanced Gantry Readout 21EX Sender: owner-linac-eng@plato.aristotle.net To: Linac-Eng Message-id: <200404290014.i3T0EaqR026618@rahsun153.rah.sa.gov.au> Organization: Royal Adelaide Hospital MIME-version: 1.0 X-Mailer: Pegasus Mail for Win32 (v3.12a) Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 29 Apr 2004 09:38:39 +0930 From: Andrew Frolov Subject: Enhanced Gantry Readout 21EX Sender: owner-linac-eng@plato.aristotle.net To: Linac-Eng Organization: Royal Adelaide Hospital X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hi everybody, This morning we experienced a problem with the gantry readout. After the power failure overnight the readout computer boots up to the DOS prompt and stays there with the following messages >301 - Keyboard error >162 - System option not set (Run setup) 24/00 >(Resume F1 key) >Press F10 to run setup. Since no keyboard being connected to the computer and we do not have any documentation for this system, we do not know what to do next. The display itself is split into tree parts with similar content and blinking cursor in each of them. All lines appear to be squashed vertically. Any suggestions will be appreciated. Cheers, Andrew Frolov Manager, RE Royal Adelaide Hospital Tel: 61 8 8222 5674 Fax: 61 8 8222 5937 email afrolov@mail.rah.sa.gov.au  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HWX00H12P9MNJ@hubbard.azu.nl>; Thu, 29 Apr 2004 15:25:12 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004042915250115991 ; Thu, 29 Apr 2004 15:25:01 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id PAA22958; Thu, 29 Apr 2004 15:25:09 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma022823; Thu, 29 Apr 2004 15:24:25 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id GAA22786 for linac-eng-list; Thu, 29 Apr 2004 06:26:24 -0500 (CDT) Received: from NGATE01.qe2-hsc.ns.ca (mail.ccdhatest.nshealth.ca [142.176.37.4]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id GAA22782 for ; Thu, 29 Apr 2004 06:26:20 -0500 (CDT) Received: from sdc_dom-MTA by NGATE01.qe2-hsc.ns.ca with Novell_GroupWise; Thu, 29 Apr 2004 08:26:17 -0300 Date: Thu, 29 Apr 2004 08:25:59 -0300 From: Carl Murphy Subject: Varian Respiratory Gating Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.5.2 Beta Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_J+SHFBrmCetHLlJ8lu/xmw)" Precedence: bulk X-Guinevere: 2.0.13 ; Capital District Hea X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 29 Apr 2004 08:25:59 -0300 From: Carl Murphy Subject: Varian Respiratory Gating Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-Guinevere: 2.0.13 ; Capital District Hea X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This is a MIME message. If you are reading this text, you may want to consider changing to a mail reader or gateway that understands how to properly handle MIME multipart messages. --Boundary_(ID_J+SHFBrmCetHLlJ8lu/xmw) Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7bit Good day: We are about to install a new 21EX and Acuity. Both with the Respiratory Gating package. I see in the IDP that there is a LCD monitor inside the treatment room. What is this used for? Any other considerations for installing the Respiratory gating with respect to room design, construction, etc? Thanks in advance. Carl Murphy _________________________________ Carl Murphy, C.E.T. Senior Linear Accelerator Service Technologist Medical Physics Department Nova Scotia Cancer Centre QEII Health Sciences Centre Halifax, Nova Scotia, Canada Email: carl.murphy@cdha.nshealth.ca Confidentiality: This email message may contain confidential information and is intended only for the individual named. If you are not the named addressee you should not disseminate, distribute or copy this email. Please notify the sender immediately by email if you have received this email by mistake and delete this email from your system. Email transmissions cannot be guaranteed to be secure or error free as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or contain viruses. The sender therefore does not accept any liability for errors or omissions in the contents of this message that arise as a result of email transmissions. If verification is required please request a hard copy version. --Boundary_(ID_J+SHFBrmCetHLlJ8lu/xmw) Content-type: text/html; charset=ISO-8859-1 Content-description: HTML Content-transfer-encoding: quoted-printable
Good day:
 
We are about to install a new 21EX and Acuity.  Both with the=20 Respiratory Gating package.  I see in the IDP that there is a = LCD=20 monitor inside the treatment room.  What is this used for?
 
Any other considerations for installing the Respiratory gating with = respect=20 to room design, construction, etc?
 
Thanks in advance.
 
Carl Murphy
 
_________________________________
Carl Murphy, C.E.T.
Senior = Linear=20 Accelerator Service Technologist
Medical Physics Department
Nova = Scotia=20 Cancer Centre
QEII Health Sciences Centre
Halifax, Nova Scotia,=20 Canada
Email: carl.murphy@cdha.nshealth.ca
 
 
 
 
 
 
 

 
Confidentiality: This email message may contain confidential information and is intended only for the individual named. If you are not the named addressee you should not disseminate, distribute or copy this email. Please notify the sender immediately by email if you have received this email by mistake and delete this email from your system. Email transmissions cannot be guaranteed to be secure or error free as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or contain viruses. The sender therefore does not accept any liability for errors or omissions in the contents of this message that arise as a result of email transmissions. If verification is required please request a hard copy version.
--Boundary_(ID_J+SHFBrmCetHLlJ8lu/xmw)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HWX00GPTPH0TH@hubbard.azu.nl>; Thu, 29 Apr 2004 15:29:35 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004042915293216174 ; Thu, 29 Apr 2004 15:29:32 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id PAA23963; Thu, 29 Apr 2004 15:29:39 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma023831; Thu, 29 Apr 2004 15:29:07 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id GAA23012 for linac-eng-list; Thu, 29 Apr 2004 06:49:49 -0500 (CDT) Received: from web13124.mail.yahoo.com (web13124.mail.yahoo.com [216.136.174.142]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id GAA23008 for ; Thu, 29 Apr 2004 06:49:47 -0500 (CDT) Received: from [159.178.80.146] by web13124.mail.yahoo.com via HTTP; Thu, 29 Apr 2004 04:49:44 -0700 (PDT) Date: Thu, 29 Apr 2004 04:49:44 -0700 (PDT) From: D Price Subject: Looking for USED Varian MLC for purchase Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Cc: pricedav@shands.ufl.edu Message-id: <20040429114944.11252.qmail@web13124.mail.yahoo.com> MIME-version: 1.0 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_Hrld60fBj9vz+XZJkCoAzA)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 29 Apr 2004 04:49:44 -0700 (PDT) From: D Price Subject: Looking for USED Varian MLC for purchase Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Cc: pricedav@shands.ufl.edu X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f --Boundary_(ID_Hrld60fBj9vz+XZJkCoAzA) Content-type: text/plain; charset=us-ascii Subject line says it all, We are Looking for USED Varian MLC for purchase. This is for a research project at the University of Fla. It can be a used 52 or 80, or a 120 leaf MLC, we don't care. We are willing to pay, or can supply a donation for cancer research certificate for almost any reasonable value of system for a substantial tax write off, or a combination of both. It needs to be complete, we need both the MLC and controller, spare parts would be nice, and it needs to be in working, or repairable to working condition Please reply to: Pricedav@shands.ufl.edu --------------------------------- Do you Yahoo!? Win a $20,000 Career Makeover at Yahoo! HotJobs --Boundary_(ID_Hrld60fBj9vz+XZJkCoAzA) Content-type: text/html; charset=us-ascii
Subject line says it all,
 
We are Looking for USED Varian MLC for purchase. This is for a research project at the University of Fla. It can be a used 52 or 80, or a 120 leaf MLC, we don't care. We are willing to pay, or can supply a donation for cancer research certificate for almost any reasonable value of system for a substantial tax write off, or a combination of both.
 
It needs to be complete, we need both the MLC and controller, spare parts would be nice, and it needs to be in working, or repairable to working condition
 
Please reply to: Pricedav@shands.ufl.edu
 

Do you Yahoo!?
Win a $20,000 Career Makeover at Yahoo! HotJobs --Boundary_(ID_Hrld60fBj9vz+XZJkCoAzA)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HWX000SEU56MX@hubbard.azu.nl>; Thu, 29 Apr 2004 17:10:37 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004042917103420250 ; Thu, 29 Apr 2004 17:10:34 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id RAA16011; Thu, 29 Apr 2004 17:10:42 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma015883; Thu, 29 Apr 2004 17:10:21 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id IAA24550 for linac-eng-list; Thu, 29 Apr 2004 08:10:38 -0500 (CDT) Received: from PHSEXCHICO2.Partners.org (phsexchico2.partners.org [170.223.254.20]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id IAA24546 for ; Thu, 29 Apr 2004 08:10:37 -0500 (CDT) Received: by phsexchico2.partners.org with Internet Mail Service (5.5.2657.72) id ; Thu, 29 Apr 2004 09:09:20 -0400 Date: Thu, 29 Apr 2004 09:09:17 -0400 From: "Maddox, Buford J" Subject: Bad Bleeder resistors; new project wedge storage Sender: owner-linac-eng@plato.aristotle.net To: "'LINAC-ENG@plato.Aristotle.net'" Message-id: <36298D09ED1AD311B4DC0008C7F4D4E11146641C@phsexch6.partners.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 29 Apr 2004 09:09:17 -0400 From: "Maddox, Buford J" Subject: Bad Bleeder resistors; new project wedge storage Sender: owner-linac-eng@plato.aristotle.net To: "'LINAC-ENG@plato.Aristotle.net'" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f A colleague recently had a bad experience where a bleeder resistor across a HV capacitor was open. The capacitor retained its charge. The resistor was a type which has a visible spiral. This makes at least 3 of these that we have seen in Vacuum and modulator HV supplies that were defective. To start a discussion of HV procedures----- Turn off power. Discharge anything you are about to touch. Keep a discharge path on it while working. Measure with a meter. Wear rubber soled shoes. Use only one hand. Don't let other parts of your body be a return path. Touch the circuit with the back of your hand before working on it. Look around for nearby hazards, especially if all power is not off. Work with a buddy. Don't work late at night or when tired. Assume nothing. For get the word "should". Add to this list. Our wedge trays do not fit in the new cabinet designed for them. Don't trust prints, measure them and design accordingly. Jerry  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HWY008D40JXZN@hubbard.azu.nl>; Thu, 29 Apr 2004 19:28:47 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004042919284423858 ; Thu, 29 Apr 2004 19:28:44 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA05376; Thu, 29 Apr 2004 19:28:52 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma005345; Thu, 29 Apr 2004 19:28:25 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id KAA26615 for linac-eng-list; Thu, 29 Apr 2004 10:20:23 -0500 (CDT) Received: from ftwvir01.ftw.medcity.net (mail.ftw.medcity.net [199.91.36.30]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id KAA26611 for ; Thu, 29 Apr 2004 10:20:22 -0500 (CDT) Received: from 170.150.192.135 by ftwvir01.ftw.medcity.net (InterScan E-Mail VirusWall NT); Thu, 29 Apr 2004 10:19:19 -0500 Received: by ftwexcon02.hca.corpad.net with Internet Mail Service (5.5.2657.72) id ; Thu, 29 Apr 2004 10:19:49 -0500 Date: Thu, 29 Apr 2004 10:19:41 -0500 From: Tirabassi Michael Subject: RE: Bad Bleeder resistors; new project wedge storage Sender: owner-linac-eng@plato.aristotle.net To: "Linac list (E-mail)" Message-id: <39A90AC123CB9D428821E2BC273E73CD01F866C4@ftwex03.hca.corpad.net> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 29 Apr 2004 10:19:41 -0500 From: Tirabassi Michael Subject: RE: Bad Bleeder resistors; new project wedge storage Sender: owner-linac-eng@plato.aristotle.net To: "Linac list (E-mail)" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hello, >To start a discussion of HV procedures----- >Turn off power. >Discharge anything you are about to touch. Keep a discharge path on it >while working. >Measure with a meter. >Wear rubber soled shoes. >Use only one hand. Don't let other parts of your body be a return path. >Touch the circuit with the back of your hand before working on it. >Look around for nearby hazards, especially if all power is not off. >Work with a buddy. Don't work late at night or when tired. >Assume nothing. For get the word "should". >Add to this list. Don't be in a rush or hurry around HV. Be patient around live circuits. Just to add to "touching a circuit". You should if you are able touch with a motion that is in a direction away from the " live " circuit,compentent,etc. You should never touch with a motion towards it. If whatever your going to touch is live, then depending on circumstances, you reaching for it is the last command your brain sends to your arm, hand, fingers. The direction of your touch should be as such that your hand, arm action is away from what potentially is a live circuit. Hope this makes sense. Mike T. RCC  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HWY008PK1HDZN@hubbard.azu.nl>; Thu, 29 Apr 2004 19:48:50 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004042919484824264 ; Thu, 29 Apr 2004 19:48:48 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA07693; Thu, 29 Apr 2004 19:48:56 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma007681; Thu, 29 Apr 2004 19:48:54 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id KAA27095 for linac-eng-list; Thu, 29 Apr 2004 10:43:08 -0500 (CDT) Received: from mail21.nhs.uk (mail21.nhs.uk [62.6.139.215]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id KAA27091 for ; Thu, 29 Apr 2004 10:43:07 -0500 (CDT) Received: from [10.191.254.3] (helo=relayint1.nhs.uk) by mail21.nhs.uk with esmtp (MTC MTA) id 1BJDgK-0001SW-AS for LINAC-ENG@plato.aristotle.net; Thu, 29 Apr 2004 16:42:36 +0100 Received: from relay.nhs.uk (194.62.42.142) by relayint1.nhs.uk (Syntegra-I1 7.0.008) id 40694D7000755C37 for LINAC-ENG@plato.aristotle.net; Thu, 29 Apr 2004 16:42:36 +0100 Received: from beijing.relay.grampian.scot.nhs.uk (10.251.30.7) by relay.nhs.uk (Syntegra-2 7.0.008) (authenticated as relay_grampian_scot_nhs_uk@es2002.nhs.uk) id 409101600001689D for LINAC-ENG@plato.aristotle.net; Thu, 29 Apr 2004 16:42:35 +0100 Received: from mail pickup service by beijing.relay.grampian.scot.nhs.uk with Microsoft SMTPSVC; Thu, 29 Apr 2004 16:33:19 +0100 Received: from relay.nhs.uk ([194.62.42.123]) by beijing.relay.grampian.scot.nhs.uk with Microsoft SMTPSVC(5.0.2195.6872) ; Thu, 29 Apr 2004 15:59:45 +0100 Received: from mail11.nhs.uk (62.6.139.203) by relay.nhs.uk (Syntegra-4 7.0.008) id 4091021F0000FB9C; Thu, 29 Apr 2004 16:01:08 +0100 Received: from plato.aristotle.net ([206.66.224.2]) by mail11.nhs.uk with esmtp (MTC MTA) id 1BJD2B-0002P9-Ku; Thu, 29 Apr 2004 16:01:07 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id IAA24550 for linac-eng-list; Thu, 29 Apr 2004 08:10:38 -0500 (CDT) Received: from PHSEXCHICO2.Partners.org (phsexchico2.partners.org [170.223.254.20]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id IAA24546 for ; Thu, 29 Apr 2004 08:10:37 -0500 (CDT) Received: by phsexchico2.partners.org with Internet Mail Service (5.5.2657.72) id ; Thu, 29 Apr 2004 09:09:20 -0400 Date: Thu, 29 Apr 2004 09:09:17 -0400 From: "Maddox, Buford J" Subject: Bad Bleeder resistors; new project wedge storage [Scanned By SOPHOS Anti-Virus] Sender: owner-linac-eng@plato.aristotle.net To: "'LINAC-ENG@plato.Aristotle.net'" Message-id: <36298D09ED1AD311B4DC0008C7F4D4E11146641C@phsexch6.partners.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 7bit Importance: normal Precedence: bulk thread-index: AcQt+pwZF2+MgmZ3RUy+cnR/JMVMhA== Content-Class: urn:content-classes:message X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4927.1200 X-OriginalArrivalTime: 29 Apr 2004 14:59:45.0656 (UTC) FILETIME=[9C0F9F80:01C42DFA] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 29 Apr 2004 09:09:17 -0400 From: "Maddox, Buford J" Subject: Bad Bleeder resistors; new project wedge storage [Scanned By SOPHOS Anti-Virus] Sender: owner-linac-eng@plato.aristotle.net To: "'LINAC-ENG@plato.Aristotle.net'" Importance: normal thread-index: AcQt+pwZF2+MgmZ3RUy+cnR/JMVMhA== Content-Class: urn:content-classes:message X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4927.1200 X-OriginalArrivalTime: 29 Apr 2004 14:59:45.0656 (UTC) FILETIME=[9C0F9F80:01C42DFA] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f A colleague recently had a bad experience where a bleeder resistor across a HV capacitor was open. The capacitor retained its charge. The resistor was a type which has a visible spiral. This makes at least 3 of these that we have seen in Vacuum and modulator HV supplies that were defective. To start a discussion of HV procedures----- Turn off power. Discharge anything you are about to touch. Keep a discharge path on it while working. Measure with a meter. Wear rubber soled shoes. Use only one hand. Don't let other parts of your body be a return path. Touch the circuit with the back of your hand before working on it. Look around for nearby hazards, especially if all power is not off. Work with a buddy. Don't work late at night or when tired. Assume nothing. For get the word "should". Add to this list. Our wedge trays do not fit in the new cabinet designed for them. Don't trust prints, measure them and design accordingly. Jerry  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HWY009AB3QKI5@hubbard.azu.nl>; Thu, 29 Apr 2004 20:37:36 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004042920373125177 ; Thu, 29 Apr 2004 20:37:31 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id UAA12861; Thu, 29 Apr 2004 20:37:39 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xmaa12850; Thu, 29 Apr 2004 20:37:23 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id LAA27951 for linac-eng-list; Thu, 29 Apr 2004 11:37:04 -0500 (CDT) Received: from pop.sca.hin.sk.ca (shin.communitynet.ca [216.174.136.2]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id LAA27947 for ; Thu, 29 Apr 2004 11:37:02 -0500 (CDT) Received: from smtp.scf.sk.ca (unverified [172.24.48.3]) by scf.sk.ca (Rockliffe SMTPRA 6.0.11) with SMTP id for ; Thu, 29 Apr 2004 10:37:01 -0600 Received: (from spc075 [172.24.56.75]) by smtp.scf.sk.ca (SAVSMTP 3.1.1.32) with SMTP id M2004042910370003215 for ; Thu, 29 Apr 2004 10:37:00 -0600 Date: Thu, 29 Apr 2004 10:37:00 -0600 From: Bob Penley Subject: Varian Respiratory Gating Sender: owner-linac-eng@plato.aristotle.net To: "Linac list (Linac list)" Message-id: <001601c42e08$32210f60$4b3818ac@sca.hin.sk.ca> MIME-version: 1.0 X-Mailer: Microsoft Outlook, Build 10.0.4510 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_zDipwzY/pGfdyUpbzzYvvA)" Importance: Normal Precedence: bulk X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 (Normal) *** EOOH *** Date: Thu, 29 Apr 2004 10:37:00 -0600 From: Bob Penley Subject: Varian Respiratory Gating Sender: owner-linac-eng@plato.aristotle.net To: "Linac list (Linac list)" Importance: Normal X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 (Normal) This is a multi-part message in MIME format. --Boundary_(ID_zDipwzY/pGfdyUpbzzYvvA) Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 7bit Hi Carl The LCD monitor is there so you can direct the camera on to the object and then adjust the iris (light level) of the camera. The only thing that I found was not mentioned in the manual, they now use speakers to time the breathing so you need to run cable in to the room for speakers and you may need to supply them as well. Also the power supply is ugly so you will want to install that out of site. Hope this helps Robert Penley Senior Physics Tech Saskatoon Cancer centre --Boundary_(ID_zDipwzY/pGfdyUpbzzYvvA) Content-type: text/html; charset=us-ascii Content-transfer-encoding: quoted-printable Message
Hi=20 Carl
 
The = LCD monitor is=20 there so you can direct the camera on to the object and then adjust = the=20 iris (light level) of the camera.
The = only thing that=20 I found was not mentioned in the manual, they now use speakers to time = the=20 breathing so you need to run cable in to the room for speakers and you = may need=20 to supply them as well.
Also = the power=20 supply is ugly so you will want to install that out of=20 site.
 
Hope = this=20 helps
 
Robert Penley
Senior Physics = Tech
Saskatoon Cancer = centre
 
--Boundary_(ID_zDipwzY/pGfdyUpbzzYvvA)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HWY00FPY7433Z@hubbard.azu.nl>; Thu, 29 Apr 2004 21:50:29 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004042921502626704 ; Thu, 29 Apr 2004 21:50:26 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id VAA21053; Thu, 29 Apr 2004 21:50:34 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma021009; Thu, 29 Apr 2004 21:50:03 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id MAA29341 for linac-eng-list; Thu, 29 Apr 2004 12:45:26 -0500 (CDT) Received: from mailserver.xrt.upenn.edu (MAILSERVER.XRT.UPENN.EDU [165.123.248.180]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id MAA29337 for ; Thu, 29 Apr 2004 12:45:24 -0500 (CDT) Received: by MAILSERVER.XRT.UPENN.EDU with Internet Mail Service (5.5.2653.19) id ; Thu, 29 Apr 2004 13:47:33 -0400 Date: Thu, 29 Apr 2004 13:47:24 -0400 From: "Kreider, Rick" Sender: owner-linac-eng@plato.aristotle.net To: Linac-eng Message-id: <4CF1F3A438F0AA49898688E7D3F13B1811FBBC@MAILSERVER.XRT.UPENN.EDU> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_O5o0npxEhwqHBnbIHBeM9g)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 29 Apr 2004 13:47:24 -0400 From: "Kreider, Rick" Sender: owner-linac-eng@plato.aristotle.net To: Linac-eng X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_O5o0npxEhwqHBnbIHBeM9g) Content-type: text/plain; CHARSET=US-ASCII In search of a good home 2100cd serial # 479 The Hospital of the University of Pennsylvania department of Radiation Oncology will be taking bids on a Varian 2100cd. Interested parties need to keep in mind that the awarded party will be responsible for shipment of equipment agreed on by the University of Pennsylvania and the awarded party. This machine has already been removed and is in an environmental warehouse waiting for a good home. This accelerator is used for daily clinical treatment and has been upgraded with a Radio Surgery motor lock out panel as well as many other features. Installed in 1994 and fully functional since. This accelerator has been setup with the following energies 6x 10x 6e 9e 12e 16e 20e Basic Machine Information Gun and Target changed in 1997 Klystron changed in 1997 Filament Hours 450 High Voltage 684 Thyatron replaced 1998 Software 5.4 RF Driver 22965 Type III accessories ETR couch VEO style Interested parties with questions or would like to setup a time to see the equipment can contact: Rick Kreider Chief of Engineering Hospital of the University of Pennsylvania Department of Radiation Oncology Kreider@xrt.upenn.edu Tel: 215-614-0543 Fax: 215-662-6762 --Boundary_(ID_O5o0npxEhwqHBnbIHBeM9g) Content-type: text/html Content-transfer-encoding: quoted-printable The University of Pennsylvania Hospital department of Radiation = Oncology will be taking bids on a Varian 2100c

In search of a good home 2100cd serial # 479

 

The Hospital of the = University of Pennsylvania department = of Radiation Oncology will be taking bids on a Varian 2100cd. Interested = parties need to keep in mind that the awarded party will be responsible for = shipment of equipment agreed on by the = University of Pennsylvania and the = awarded party. This machine has already been removed and is in an environmental warehouse waiting for a good home. 

 

This accelerator is used for daily clinical treatment and has = been upgraded with a Radio Surgery motor lock out panel as well as many other = features. Installed in 1994 and fully functional since. 

 

This accelerator has been setup with the following = energies

6x  10x  6e  9e  12e  16e  20e

 

Basic Machine = Information

Gun and Target changed in 1997

Klystron changed in 1997

Filament Hours 450

High Voltage 684

Thyatron replaced 1998

Software 5.4

RF Driver 22965

Type III accessories

ETR couch VEO style

 

Interested parties with questions or would like to setup a time = to see the equipment

can contact:

 

Rick Kreider

Chief of = Engineering

Hospital of the University of Pennsylvania

Department of Radiation Oncology

Kreider@xrt.upenn.edu=

Tel: 215-614-0543

Fax: 215-662-6762

  =

--Boundary_(ID_O5o0npxEhwqHBnbIHBeM9g)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HWY00LG6CW6XE@hubbard.azu.nl>; Thu, 29 Apr 2004 23:55:20 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004042923550429086 ; Thu, 29 Apr 2004 23:55:04 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id XAA06646; Thu, 29 Apr 2004 23:55:11 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma006365; Thu, 29 Apr 2004 23:54:47 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id OAA03739 for linac-eng-list; Thu, 29 Apr 2004 14:55:39 -0500 (CDT) Received: from dalwhinnie.chhlth.govt.nz ([203.163.70.2]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id OAA03735 for ; Thu, 29 Apr 2004 14:55:37 -0500 (CDT) Received: from NTCHAVIMSS (ntchavimss.chhlth.govt.nz [159.117.27.250]) by dalwhinnie.chhlth.govt.nz (8.12.8/8.12.5) with ESMTP id i3TJvnEN001202 for ; Fri, 30 Apr 2004 07:57:50 +1200 Received: from SMTPGATE.CHHLTH.GOVT.NZ ([159.117.20.14]) by NTCHAVIMSS with InterScan Messaging Security Suite; Fri, 30 Apr 2004 07:51:15 +1200 Received: from CHCH2-MTA by SMTPGATE.CHHLTH.GOVT.NZ with Novell_GroupWise; Fri, 30 Apr 2004 07:55:03 +1200 Date: Fri, 30 Apr 2004 07:54:57 +1200 From: Dave Pinchin Subject: Re: Bad Bleeder resistors; new project wedge storage Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.0.4 Content-type: text/plain; charset=US-ASCII Content-disposition: inline Content-transfer-encoding: 8bit Precedence: bulk X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id OAA03736 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 30 Apr 2004 07:54:57 +1200 From: Dave Pinchin Subject: Re: Bad Bleeder resistors; new project wedge storage Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Content-disposition: inline X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id OAA03736 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f I remember a story about a fellow who found the braid of the earthing stick broken. It had failed at the crimp and was held together by the plastic outer. Add to the list: Check the earthing stick. Give it a tug to ensure it's in tact. >>> "Maddox, Buford J" 30/04/04 01:09:17 >>> A colleague recently had a bad experience where a bleeder resistor across a HV capacitor was open. The capacitor retained its charge. The resistor was a type which has a visible spiral. This makes at least 3 of these that we have seen in Vacuum and modulator HV supplies that were defective. To start a discussion of HV procedures----- Turn off power. Discharge anything you are about to touch. Keep a discharge path on it while working. Measure with a meter. Wear rubber soled shoes. Use only one hand. Don't let other parts of your body be a return path. Touch the circuit with the back of your hand before working on it. Look around for nearby hazards, especially if all power is not off. Work with a buddy. Don't work late at night or when tired. Assume nothing. For get the word "should". Add to this list. Our wedge trays do not fit in the new cabinet designed for them. Don't trust prints, measure them and design accordingly. Jerry ********************************************************************** This email and attachments have been scanned for content and viruses and is believed to be clean This email or attachments may contain confidential or legally privileged information intended for the sole use of the addressee(s). Any use, redistribution, disclosure, or reproduction of this message, except as intended, is prohibited. If you received this email in error, please notify the sender and remove all copies of the message, including any attachments. Any views or opinions expressed in this email (unless otherwise stated) may not represent those of Canterbury District Health Board **********************************************************************  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HWZ00002KF9RJ@hubbard.azu.nl>; Fri, 30 Apr 2004 15:35:38 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004043015353611409 ; Fri, 30 Apr 2004 15:35:36 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id PAA05814; Fri, 30 Apr 2004 15:35:44 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma005785; Fri, 30 Apr 2004 15:35:32 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id GAA15743 for linac-eng-list; Fri, 30 Apr 2004 06:53:02 -0500 (CDT) Received: from chs-exchsv2.covhealth.com (exchangesvr.covhealth.com [199.250.66.2]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id GAA15739 for ; Fri, 30 Apr 2004 06:53:01 -0500 (CDT) Received: by chs-exchsv2.covhealth.com with Internet Mail Service (5.5.2653.19) id ; Fri, 30 Apr 2004 06:52:25 -0500 Date: Fri, 30 Apr 2004 06:52:14 -0500 From: "Lockhart, Ryan" Subject: IMRT Sender: owner-linac-eng@plato.aristotle.net To: 'clinac listserve' Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_6AgCh/yA/Y2kyY9B6Pu+Ug)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 30 Apr 2004 06:52:14 -0500 From: "Lockhart, Ryan" Subject: IMRT Sender: owner-linac-eng@plato.aristotle.net To: 'clinac listserve' X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_6AgCh/yA/Y2kyY9B6Pu+Ug) Content-type: text/plain; CHARSET=US-ASCII We have a 21EX and a 2100C both with Millennium MLC's that are just over a year old. Our physicist is in the process of implementing IMRT. Has anybody out there had any noticeable increases in breakdowns or required service due to IMRT? Also, are there any additional PM requirements or recommendations you would make to make them run as smoothly with IMRT? Thanks Ryan Lockhart Covenant Medical Center Waterloo, Iowa --Boundary_(ID_6AgCh/yA/Y2kyY9B6Pu+Ug) Content-type: text/html Content-transfer-encoding: quoted-printable IMRT

We have a 21EX and a 2100C both with = Millennium MLC's that are just over a year old.  Our physicist is = in the process of implementing IMRT.  Has anybody out there had = any noticeable increases in breakdowns or required service due to = IMRT?  Also, are there any additional PM requirements or = recommendations you would make to make them run as smoothly with = IMRT?

Thanks

Ryan Lockhart
Covenant Medical Center
Waterloo, Iowa

--Boundary_(ID_6AgCh/yA/Y2kyY9B6Pu+Ug)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HWZ002C9Q4LZD@hubbard.azu.nl>; Fri, 30 Apr 2004 17:38:55 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004043017385313604 ; Fri, 30 Apr 2004 17:38:53 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id RAA18498; Fri, 30 Apr 2004 17:39:01 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma018399; Fri, 30 Apr 2004 17:38:24 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id IAA16810 for linac-eng-list; Fri, 30 Apr 2004 08:48:05 -0500 (CDT) Received: from mail2.tenethealth.com (mail2.tenethealth.com [199.222.14.8]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id IAA16806 for ; Fri, 30 Apr 2004 08:48:03 -0500 (CDT) Received: from cscan1.tenethealth.com (cscan1.tenethealth.com [172.18.167.80]) by mail2.tenethealth.com (8.11.6/8.11.6) with ESMTP id i3UDlW914328; Fri, 30 Apr 2004 08:47:32 -0500 Received: from 172.18.167.160 by cscan3.tenethealth.net with SMTP (Tenet Healthcare CF SMTP Relay (MMS v5.5.3)); Fri, 30 Apr 2004 08:47:22 -0500 Received: from nodnsquery(172.18.167.215) by tenhdcthvscan01.tenethealth.net via csmap id e70cc4c6_9aac_11d8_8bae_0002b3d786fe_16625; Fri, 30 Apr 2004 08:47:20 -0500 (CDT) Received: from tenbmcthemx01.tenethealth.net ([10.30.2.48]) by tenhdcthemx51.tenethealth.net with Microsoft SMTPSVC(5.0.2195.6713); Fri, 30 Apr 2004 08:47:18 -0500 Date: Fri, 30 Apr 2004 08:47:17 -0500 From: "Kyle, John" Subject: RE: IMRT Sender: owner-linac-eng@plato.aristotle.net To: "Lockhart, Ryan" , clinac listserve Message-id: MIME-version: 1.0 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_sa/MYPradTmeLbyzA/iQzA)" Precedence: bulk X-MimeOLE: Produced By Microsoft Exchange V6.0.6249.0 content-class: urn:content-classes:message Thread-Topic: IMRT Thread-Index: AcQuuGpnlKPDHr1LRPisxAxvph+AlwAAMAbA X-OriginalArrivalTime: 30 Apr 2004 13:47:18.0764 (UTC) FILETIME=[A7864AC0:01C42EB9] X-WSS-ID: 6C8C8763835210-01-01 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 30 Apr 2004 08:47:17 -0500 From: "Kyle, John" Subject: RE: IMRT Sender: owner-linac-eng@plato.aristotle.net To: "Lockhart, Ryan" , clinac listserve X-MimeOLE: Produced By Microsoft Exchange V6.0.6249.0 content-class: urn:content-classes:message Thread-Topic: IMRT Thread-Index: AcQuuGpnlKPDHr1LRPisxAxvph+AlwAAMAbA X-OriginalArrivalTime: 30 Apr 2004 13:47:18.0764 (UTC) FILETIME=[A7864AC0:01C42EB9] X-WSS-ID: 6C8C8763835210-01-01 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This is a multi-part message in MIME format. --Boundary_(ID_sa/MYPradTmeLbyzA/iQzA) Content-type: text/plain; charset=us-ascii Content-transfer-encoding: quoted-printable We are just about in the same boat with you. I have heard that with IMRT leaf motors fail more frequently. We have not replaced a single motor yet.=20 -----Original Message----- From: Lockhart, Ryan [mailto:LockhartR@covhealth.com]=20 Sent: Friday, April 30, 2004 6:52 AM To: 'clinac listserve' Subject: IMRT We have a 21EX and a 2100C both with Millennium MLC's that are just over a year old. Our physicist is in the process of implementing IMRT. Has anybody out there had any noticeable increases in breakdowns or required service due to IMRT? Also, are there any additional PM requirements or recommendations you would make to make them run as smoothly with IMRT? Thanks=20 Ryan Lockhart=20 Covenant Medical Center=20 Waterloo, Iowa=20 --Boundary_(ID_sa/MYPradTmeLbyzA/iQzA) Content-type: text/html; charset=us-ascii Content-transfer-encoding: quoted-printable Message
We are=20 just about in the same boat with you. I have heard that with IMRT leaf = motors=20 fail more frequently. We have not replaced a single motor yet.=20
-----Original Message-----
From: = Lockhart, Ryan=20 [mailto:LockhartR@covhealth.com]
Sent: Friday, April 30, = 2004 6:52=20 AM
To: 'clinac listserve'
Subject:=20 IMRT

We have a 21EX and a 2100C both with = Millennium=20 MLC's that are just over a year old.  Our physicist is in the = process of=20 implementing IMRT.  Has anybody out there had any noticeable = increases in=20 breakdowns or required service due to IMRT?  Also, are there any=20 additional PM requirements or recommendations you would make to make = them run=20 as smoothly with IMRT?

Thanks

Ryan Lockhart
Covenant Medical Center
Waterloo,=20 Iowa

--Boundary_(ID_sa/MYPradTmeLbyzA/iQzA)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HX000GG00Z0W6@hubbard.azu.nl>; Fri, 30 Apr 2004 21:33:05 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004043021330317892 ; Fri, 30 Apr 2004 21:33:03 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id VAA13314; Fri, 30 Apr 2004 21:33:12 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma013277; Fri, 30 Apr 2004 21:33:07 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id MAA21283 for linac-eng-list; Fri, 30 Apr 2004 12:49:14 -0500 (CDT) Received: from UTM-MAIL05A.mdacc.tmc.edu (utmlnmail05nt.mdacc.tmc.edu [143.111.84.156]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id MAA21279 for ; Fri, 30 Apr 2004 12:49:12 -0500 (CDT) Date: Fri, 30 Apr 2004 12:48:40 -0500 From: chusmith@mdanderson.org Subject: 3rd Annual RSEA Meeting Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Lotus Notes Release 5.0.11 July 24, 2002 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_KZmO/GKAIwibgWVa0zRYow)" Precedence: bulk X-MIMETrack: Serialize by Router on UTM-MAIL05A/HOU/UTMDACC(Release 5.0.11 |July 24, 2002) at 04/30/2004 12:49:12 PM, Serialize complete at 04/30/2004 12:49:12 PM X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 30 Apr 2004 12:48:40 -0500 From: chusmith@mdanderson.org Subject: 3rd Annual RSEA Meeting Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-MIMETrack: Serialize by Router on UTM-MAIL05A/HOU/UTMDACC(Release 5.0.11 |July 24, 2002) at 04/30/2004 12:49:12 PM, Serialize complete at 04/30/2004 12:49:12 PM X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This is a multipart message in MIME format. --Boundary_(ID_KZmO/GKAIwibgWVa0zRYow) Content-type: text/plain; charset=us-ascii Greetings to the list, Registration is under way for the 3rd annual meeting of the RSEA. The meeting will be held 24-25 July 2004 in conjunction with the annual AAPM meeting in Pittsburgh , Pennsylvania. The meeting will include an annual business meeting and continuing education classes. There will also be a discussion on future certification. We will be making RSEA officer nominations in preparation for September elections. Elections are done through mail-in ballots. Registration information is available at http://www.aapm.org/meetings/04AM/RegInfo.asp. Discounted registration is available through 9 June 2004. Registration for the meeting includes one day admission to the exhibit hall. We are updating our webpage at http://linaceng.org/rsea/. Please check back from time to time. For more information please contact me at chusmith@mdanderson.org --Boundary_(ID_KZmO/GKAIwibgWVa0zRYow) Content-type: text/html; charset=us-ascii
Greetings to the list,

Registration is under way for the 3rd annual meeting of the RSEA.  The meeting will be held 24-25 July 2004 in conjunction with the annual AAPM meeting in Pittsburgh , Pennsylvania.  The meeting will include an annual business meeting and continuing education classes.  There will also be a discussion on future certification.  We will be making RSEA officer nominations in preparation for September elections.  Elections are done through mail-in ballots.  

 Registration information is available at http://www.aapm.org/meetings/04AM/RegInfo.asp.

 Discounted registration is available through 9 June 2004.  Registration for the meeting includes one day admission to the exhibit hall.
 
We are updating our webpage at  http://linaceng.org/rsea/.  Please check back from time to time.

For more information please contact me at chusmith@mdanderson.org --Boundary_(ID_KZmO/GKAIwibgWVa0zRYow)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HX000M6H5H0LE@hubbard.azu.nl>; Fri, 30 Apr 2004 23:10:15 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004043023101219514 ; Fri, 30 Apr 2004 23:10:12 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id XAA22437; Fri, 30 Apr 2004 23:10:20 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma022415; Fri, 30 Apr 2004 23:10:18 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id OAA25101 for linac-eng-list; Fri, 30 Apr 2004 14:15:04 -0500 (CDT) Received: from HSCEMAIL5.hscs.virginia.edu (hscemail5.hscs.Virginia.EDU [128.143.176.152]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id OAA25097 for ; Fri, 30 Apr 2004 14:15:02 -0500 (CDT) Received: from HSCSEMAIL4.hscs.virginia.edu ([128.143.165.15]) by HSCEMAIL5.hscs.virginia.edu with Microsoft SMTPSVC(5.0.2195.6713); Fri, 30 Apr 2004 15:12:46 -0400 Date: Fri, 30 Apr 2004 15:14:31 -0400 From: "Dove, Bill E *HS" Subject: RE: IMRT Sender: owner-linac-eng@plato.aristotle.net To: "Kyle, John" , "Lockhart, Ryan" , clinac listserve Message-id: MIME-version: 1.0 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_Tk+SPxpjR0FCq0lfVBxh/w)" Precedence: bulk X-MimeOLE: Produced By Microsoft Exchange V6.0.6487.1 content-class: urn:content-classes:message Thread-Topic: IMRT Thread-Index: AcQuuGpnlKPDHr1LRPisxAxvph+AlwAAMAbAAAm8uzA= X-OriginalArrivalTime: 30 Apr 2004 19:12:46.0671 (UTC) FILETIME=[1F106DF0:01C42EE7] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 30 Apr 2004 15:14:31 -0400 From: "Dove, Bill E *HS" Subject: RE: IMRT Sender: owner-linac-eng@plato.aristotle.net To: "Kyle, John" , "Lockhart, Ryan" , clinac listserve X-MimeOLE: Produced By Microsoft Exchange V6.0.6487.1 content-class: urn:content-classes:message Thread-Topic: IMRT Thread-Index: AcQuuGpnlKPDHr1LRPisxAxvph+AlwAAMAbAAAm8uzA= X-OriginalArrivalTime: 30 Apr 2004 19:12:46.0671 (UTC) FILETIME=[1F106DF0:01C42EE7] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This is a multi-part message in MIME format. --Boundary_(ID_Tk+SPxpjR0FCq0lfVBxh/w) Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: quoted-printable We have a 52 leaf Mark II MLC that is doing step-and-shoot IMRT. I = guess the average number of IMRT patients is between 10 to 12 per day = with 7 to 9 fields each plus usual carriage shifts. This works out to = be 400 to 600 MLC movements (sometimes over 600) per patient. The IMRT = has definitely increased the cleaning intervals. Motor usage, lead = screw rebuilds and flexing ribbon cable replacements have also = increased. Perhaps a Millennium is better suited to IMRT that the Mark = II but our 2300 CD that is about 10 years old. =20 William Dove, RTR(T)=20 Service Engineer=20 University of Virginia Health System=20 Rad. Oncology Dept., Radiological Physics Div.=20 Box 800375, Room 1787=20 Charlottesville, 22908=20 Voice: (434) 924-9422=20 FAX: (434) 982-3520=20 -----Original Message----- From: owner-linac-eng@plato.aristotle.net = [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Kyle, John Sent: Friday, April 30, 2004 9:47 AM To: Lockhart, Ryan; clinac listserve Subject: RE: IMRT We are just about in the same boat with you. I have heard that with IMRT = leaf motors fail more frequently. We have not replaced a single motor = yet.=20 -----Original Message----- From: Lockhart, Ryan [mailto:LockhartR@covhealth.com]=20 Sent: Friday, April 30, 2004 6:52 AM To: 'clinac listserve' Subject: IMRT We have a 21EX and a 2100C both with Millennium MLC's that are just over = a year old. Our physicist is in the process of implementing IMRT. Has = anybody out there had any noticeable increases in breakdowns or required = service due to IMRT? Also, are there any additional PM requirements or = recommendations you would make to make them run as smoothly with IMRT? Thanks=20 Ryan Lockhart=20 Covenant Medical Center=20 Waterloo, Iowa=20 --Boundary_(ID_Tk+SPxpjR0FCq0lfVBxh/w) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: quoted-printable Message
We=20 have a 52 leaf Mark II MLC that is doing step-and-shoot IMRT.  I = guess the=20 average number of IMRT patients is between 10 to 12 per day with 7 = to 9=20 fields each plus usual carriage shifts.  This works out to be 400 = to 600=20 MLC movements (sometimes over 600) per patient.  The IMRT has = definitely=20 increased the cleaning intervals.  Motor usage, lead screw rebuilds = and=20 flexing ribbon cable replacements have also increased.  = Perhaps a=20 Millennium is better suited to IMRT that the Mark II but our 2300 CD = that is=20 about 10 years old.
 

William Dove, RTR(T) =
Service Engineer
University of Virginia Health System
Rad. Oncology Dept., Radiological Physics Div. =
Box 800375, Room 1787
Charlottesville, 22908
Voice:=20 (434) 924-9422
FAX: (434)=20 982-3520

--Boundary_(ID_Tk+SPxpjR0FCq0lfVBxh/w)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HX4009KNOGU88@hubbard.azu.nl>; Mon, 3 May 2004 09:51:06 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050309505711893 ; Mon, 03 May 2004 09:50:57 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id JAA13984; Mon, 03 May 2004 09:51:07 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma013916; Mon, 03 May 2004 09:50:46 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id BAA23157 for linac-eng-list; Mon, 03 May 2004 01:06:49 -0500 (CDT) Received: from gondor.dpa.act.gov.au (gondor.dpa.act.gov.au [136.153.2.50]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id BAA23153 for ; Mon, 03 May 2004 01:06:47 -0500 (CDT) Received: (from smap@localhost) by gondor.dpa.act.gov.au (8.11.1/8.11.1) id i4366gC02851 for ; Mon, 03 May 2004 16:06:43 +1000 (EST) Received: from unknown(10.226.2.7) by gondor via smap (V5.5) id xmaa02794; Mon, 03 May 2004 16:06:38 +1000 Received: by cal007.dpa.act.gov.au with Internet Mail Service (5.5.2657.72) id ; Mon, 03 May 2004 16:06:38 +1000 Date: Mon, 03 May 2004 16:06:32 +1000 From: "Caunt, Peter" Subject: Carrousel noise errors Sender: owner-linac-eng@plato.aristotle.net To: "Linac Eng (E-mail)" Message-id: <2FC7DBCD6D6AD611AD7B0090278CABAEE79E7D@CAL030> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 03 May 2004 16:06:32 +1000 From: "Caunt, Peter" Subject: Carrousel noise errors Sender: owner-linac-eng@plato.aristotle.net To: "Linac Eng (E-mail)" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Listmembers, I am seeking assistance on an intermittent problem that causes carrousel failures on a two-year-old C3 2100CD, one of those problems not wished upon anyone. Error occurs in the afternoon at around the same time but on occasional days. Error code 99 - noise problems Carrousel lubricated and in good condition. BCD switches changed and adjusted, fault still exists. Not the Carrousel/Bmag board. Port lock pin homes and operates satisfactorily-air pressure, solenoid OK. Wondering if anyone has chased this down before, any expertise on this problem greatly appreciated. Many thanks for the opportunity to raise the question. Regards, Peter Caunt Radiotherapy Department Canberra, Australia. "Important: This transmission is intended only for the use of the addressee and may contain confidential or legally privileged information. If you are not the intended recipient, you are notified that any use or dissemination of this communication is strictly prohibited. If you receive this transmission in error please notify the author immediately and delete all copies of this transmission." ---------------------------------------------------------------------------- ------------------------------------------ This email, and any attachments, may be confidential and also privileged. If you are not the intended recipient: Please notify the sender and delete all copies of this transmission along with any attachments immediately. You should not copy or use it for any purpose, nor disclose its contents to any other person. ---------------------------------------------------------------------------- ------------------------------------------  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HX500H747QCLA@hubbard.azu.nl>; Mon, 3 May 2004 16:47:04 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050316465931114 ; Mon, 03 May 2004 16:46:59 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id QAA08092; Mon, 03 May 2004 16:47:10 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma007929; Mon, 03 May 2004 16:46:23 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id HAA28552 for linac-eng-list; Mon, 03 May 2004 07:48:47 -0500 (CDT) Received: from PHSEXCHICO.MGH.HARVARD.EDU (phsexchico.mgh.harvard.edu [132.183.126.50]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id HAA28548 for ; Mon, 03 May 2004 07:48:45 -0500 (CDT) Received: by phsexchico.mgh.harvard.edu with Internet Mail Service (5.5.2657.72) id ; Mon, 03 May 2004 08:44:13 -0400 Date: Mon, 03 May 2004 08:44:12 -0400 From: "Maddox, Buford J" Subject: RE: Carrousel noise errors Sender: owner-linac-eng@plato.aristotle.net To: "'Caunt, Peter'" , "Linac Eng (E-mail)" Message-id: <36298D09ED1AD311B4DC0008C7F4D4E11146641F@phsexch6.partners.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 03 May 2004 08:44:12 -0400 From: "Maddox, Buford J" Subject: RE: Carrousel noise errors Sender: owner-linac-eng@plato.aristotle.net To: "'Caunt, Peter'" , "Linac Eng (E-mail)" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f I have seen pin seating problems show up as error 99, noise. Usually cured by a new switch or adjusting the old one so that it is not on the edge of its operating range. May have loctite on the adjustment. I have heard that a bad pot does this also, haven't seen it. Afternoon at the same time sounds like the same patient, so you may have a pattern/sequence sensitive fault. I hope you like a challenge! Love those intermittents! Just went through a bunch on another brand, cmos damaged by nearby arcing, many nights. Jerry -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Caunt, Peter Sent: Monday, May 03, 2004 2:07 AM To: Linac Eng (E-mail) Subject: Carrousel noise errors Listmembers, I am seeking assistance on an intermittent problem that causes carrousel failures on a two-year-old C3 2100CD, one of those problems not wished upon anyone. Error occurs in the afternoon at around the same time but on occasional days. Error code 99 - noise problems Carrousel lubricated and in good condition. BCD switches changed and adjusted, fault still exists. Not the Carrousel/Bmag board. Port lock pin homes and operates satisfactorily-air pressure, solenoid OK. Wondering if anyone has chased this down before, any expertise on this problem greatly appreciated. Many thanks for the opportunity to raise the question. Regards, Peter Caunt Radiotherapy Department Canberra, Australia. "Important: This transmission is intended only for the use of the addressee and may contain confidential or legally privileged information. If you are not the intended recipient, you are notified that any use or dissemination of this communication is strictly prohibited. If you receive this transmission in error please notify the author immediately and delete all copies of this transmission." ---------------------------------------------------------------------------- ------------------------------------------ This email, and any attachments, may be confidential and also privileged. If you are not the intended recipient: Please notify the sender and delete all copies of this transmission along with any attachments immediately. You should not copy or use it for any purpose, nor disclose its contents to any other person. ---------------------------------------------------------------------------- ------------------------------------------  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HX500MQ9DFJX5@hubbard.azu.nl>; Mon, 3 May 2004 18:50:13 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050318501001651 ; Mon, 03 May 2004 18:50:10 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA25926; Mon, 03 May 2004 18:50:21 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma025881; Mon, 03 May 2004 18:50:03 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id JAA02199 for linac-eng-list; Mon, 03 May 2004 09:35:18 -0500 (CDT) Received: from pop.sca.hin.sk.ca (shin.communitynet.ca [216.174.136.2]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id JAA02195 for ; Mon, 03 May 2004 09:35:15 -0500 (CDT) Received: from smtp.scf.sk.ca (unverified [172.24.48.3]) by scf.sk.ca (Rockliffe SMTPRA 6.0.11) with SMTP id ; Mon, 03 May 2004 08:35:14 -0600 Received: (from RPC035 [172.24.49.35]) by smtp.scf.sk.ca (SAVSMTP 3.1.1.32) with SMTP id M2004050308351300124 ; Mon, 03 May 2004 08:35:13 -0600 Date: Mon, 03 May 2004 08:33:24 -0600 From: scot thiesson Subject: Re: RE: Carrousel noise errors In-reply-to: <36298D09ED1AD311B4DC0008C7F4D4E11146641F@phsexch6.partners.org> Sender: owner-linac-eng@plato.aristotle.net To: "'Caunt, Peter'" , "Linac Eng (E-mail)" Message-id: Organization: a.b.c.c. MIME-version: 1.0 X-Mailer: Opera 6.0 build 1010 Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 (Normal) *** EOOH *** Date: Mon, 03 May 2004 08:33:24 -0600 From: scot thiesson Subject: Re: RE: Carrousel noise errors In-reply-to: <36298D09ED1AD311B4DC0008C7F4D4E11146641F@phsexch6.partners.org> Sender: owner-linac-eng@plato.aristotle.net To: "'Caunt, Peter'" , "Linac Eng (E-mail)" Organization: a.b.c.c. X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 (Normal) I have seen this problem and it was a bad pot. I assumed that measuring the pot voltage would point me in the right direction but I was wrong. We chased many things before we decided to try changing the pot, which fixed things nicely. Observe the motion of the carrousel chain. It should move very smoothly throughout the travel from port to port (no jerkiness) and not hunt at all for the final 5 volt resting position (pin down). There are different stresses on the carrousel with changes in gantry position so this could possibly explain your 'same time occasional days' observance. Scot Thiesson Senior Physics Tech. Allan Blair Cancer Centre Regina Saskatchewan Canada 5/3/2004 6:44:12 AM, "Maddox, Buford J" wrote: >I have seen pin seating problems show up as error 99, noise. Usually cured by a >new switch or adjusting the old one so that it is not on the edge of its >operating range. May have loctite on the adjustment. I have heard that a bad >pot does this also, haven't seen it. >Afternoon at the same time sounds like the same patient, so you may have a >pattern/sequence sensitive fault. >I hope you like a challenge! Love those intermittents! Just went through a >bunch on another brand, cmos damaged by nearby arcing, many nights. >Jerry > >-----Original Message----- >From: owner-linac-eng@plato.aristotle.net >[mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Caunt, Peter >Sent: Monday, May 03, 2004 2:07 AM >To: Linac Eng (E-mail) >Subject: Carrousel noise errors > > >Listmembers, > I am seeking assistance on an intermittent >problem that causes carrousel failures on a two-year-old C3 2100CD, one of >those problems not wished upon anyone. > >Error occurs in the afternoon at around the same time but on occasional >days. > >Error code 99 - noise problems > >Carrousel lubricated and in good condition. >BCD switches changed and adjusted, fault still exists. >Not the Carrousel/Bmag board. >Port lock pin homes and operates satisfactorily-air pressure, solenoid OK. > >Wondering if anyone has chased this down before, any expertise on this >problem greatly appreciated. > >Many thanks for the opportunity to raise the question. > >Regards, > >Peter Caunt >Radiotherapy Department >Canberra, Australia. > >"Important: This transmission is intended only for the use of the addressee >and may contain confidential or legally privileged information. >If you are not the intended recipient, you are notified that any use or >dissemination of this communication is strictly prohibited. If you receive >this transmission in error please notify the author immediately and delete >all copies of this transmission." > > > >---------------------------------------------------------------------------- >------------------------------------------ > This email, and any attachments, may be confidential and also privileged. >If you are not the intended recipient: >Please notify the sender and delete all copies of this transmission along >with any attachments immediately. >You should not copy or use it for any purpose, nor disclose its contents to >any other person. >---------------------------------------------------------------------------- >------------------------------------------ >  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HX5004GEHMAYZ@hubbard.azu.nl>; Mon, 3 May 2004 20:20:41 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050320203803220 ; Mon, 03 May 2004 20:20:38 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id UAA06425; Mon, 03 May 2004 20:20:48 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma006377; Mon, 03 May 2004 20:20:27 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id LAA04061 for linac-eng-list; Mon, 03 May 2004 11:11:49 -0500 (CDT) Received: from mail2.tenethealth.com (mail2.tenethealth.com [199.222.14.8]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id LAA04057 for ; Mon, 03 May 2004 11:11:47 -0500 (CDT) Received: from cscan1.tenethealth.com (cscan1.tenethealth.com [172.18.167.80]) by mail2.tenethealth.com (8.11.6/8.11.6) with ESMTP id i43GBE920637; Mon, 03 May 2004 11:11:14 -0500 Received: from 172.18.167.160 by cscan3.tenethealth.net with SMTP (Tenet Healthcare CF SMTP Relay (MMS v5.5.3)); Mon, 03 May 2004 11:06:47 -0500 Received: from tenhdcthemx51.tenethealth.net(172.18.167.215) by tenhdcthvscan01.tenethealth.net via csmap id dcc49716_9d1b_11d8_82a8_0002b3d786fe_9554; Mon, 03 May 2004 11:06:40 -0500 (CDT) Received: from tenbmcthemx01.tenethealth.net ([10.30.2.48]) by tenhdcthemx51.tenethealth.net with Microsoft SMTPSVC(5.0.2195.6713); Mon, 03 May 2004 11:06:03 -0500 Date: Mon, 03 May 2004 11:06:03 -0500 From: "Kyle, John" Subject: RE: Carrousel noise errors Sender: owner-linac-eng@plato.aristotle.net To: "Maddox, Buford J" , "Caunt, Peter" , "Linac Eng (E-mail)" Message-id: MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 8bit Precedence: bulk X-MimeOLE: Produced By Microsoft Exchange V6.0.6249.0 content-class: urn:content-classes:message Thread-Topic: Carrousel noise errors Thread-Index: AcQxHdy6L0mHlohyQHKxNth01RAiDwAChskw X-OriginalArrivalTime: 03 May 2004 16:06:03.0827 (UTC) FILETIME=[88E35830:01C43128] X-WSS-ID: 6C88B19D1535938-01-01 X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id LAA04058 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 03 May 2004 11:06:03 -0500 From: "Kyle, John" Subject: RE: Carrousel noise errors Sender: owner-linac-eng@plato.aristotle.net To: "Maddox, Buford J" , "Caunt, Peter" , "Linac Eng (E-mail)" X-MimeOLE: Produced By Microsoft Exchange V6.0.6249.0 content-class: urn:content-classes:message Thread-Topic: Carrousel noise errors Thread-Index: AcQxHdy6L0mHlohyQHKxNth01RAiDwAChskw X-OriginalArrivalTime: 03 May 2004 16:06:03.0827 (UTC) FILETIME=[88E35830:01C43128] X-WSS-ID: 6C88B19D1535938-01-01 X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id LAA04058 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f It has been a while but I think I remember replacing a RAM chip on the BMAG board to repair some intermittent faults. If you replace only the chip you do not have to adjust any outputs. John Kyle Coordinator Technical Support Services Brookwood Medical Center 205-877-1092 -----Original Message----- From: Maddox, Buford J [mailto:JMADDOX@LROC.HARVARD.EDU] Sent: Monday, May 03, 2004 7:44 AM To: 'Caunt, Peter'; Linac Eng (E-mail) Subject: RE: Carrousel noise errors I have seen pin seating problems show up as error 99, noise. Usually cured by a new switch or adjusting the old one so that it is not on the edge of its operating range. May have loctite on the adjustment. I have heard that a bad pot does this also, haven't seen it. Afternoon at the same time sounds like the same patient, so you may have a pattern/sequence sensitive fault. I hope you like a challenge! Love those intermittents! Just went through a bunch on another brand, cmos damaged by nearby arcing, many nights. Jerry -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Caunt, Peter Sent: Monday, May 03, 2004 2:07 AM To: Linac Eng (E-mail) Subject: Carrousel noise errors Listmembers, I am seeking assistance on an intermittent problem that causes carrousel failures on a two-year-old C3 2100CD, one of those problems not wished upon anyone. Error occurs in the afternoon at around the same time but on occasional days. Error code 99 - noise problems Carrousel lubricated and in good condition. BCD switches changed and adjusted, fault still exists. Not the Carrousel/Bmag board. Port lock pin homes and operates satisfactorily-air pressure, solenoid OK. Wondering if anyone has chased this down before, any expertise on this problem greatly appreciated. Many thanks for the opportunity to raise the question. Regards, Peter Caunt Radiotherapy Department Canberra, Australia. "Important: This transmission is intended only for the use of the addressee and may contain confidential or legally privileged information. If you are not the intended recipient, you are notified that any use or dissemination of this communication is strictly prohibited. If you receive this transmission in error please notify the author immediately and delete all copies of this transmission." ------------------------------------------------------------------------ ---- ------------------------------------------ This email, and any attachments, may be confidential and also privileged. If you are not the intended recipient: Please notify the sender and delete all copies of this transmission along with any attachments immediately. You should not copy or use it for any purpose, nor disclose its contents to any other person. ------------------------------------------------------------------------ ---- ------------------------------------------  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HX5005YJJIR9J@hubbard.azu.nl>; Mon, 3 May 2004 21:01:41 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050321013903978 ; Mon, 03 May 2004 21:01:39 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id VAA11485; Mon, 03 May 2004 21:01:49 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma011407; Mon, 03 May 2004 21:01:14 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id MAA05309 for linac-eng-list; Mon, 03 May 2004 12:01:17 -0500 (CDT) Received: from vhost01.spinn.net (vhost01.spinn.net [216.223.237.32]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id MAA05302 for ; Mon, 03 May 2004 12:01:15 -0500 (CDT) Received: from LT7 ([216.223.230.38]) by vhost01.spinn.net (8.11.6/8.11.6) with SMTP id i43HtQc08499; Mon, 03 May 2004 11:55:26 -0600 Date: Mon, 03 May 2004 11:03:55 -0600 From: Steve Davis Subject: Re: RE: Carrousel noise errors Sender: owner-linac-eng@plato.aristotle.net To: scot thiesson , "'Caunt, Peter'" , "Linac Eng (E-mail)" Message-id: <000801c43130$9e650bb0$91c8a8c0@nmohc.com> MIME-version: 1.0 X-Mailer: Microsoft Outlook Express 6.00.2800.1158 Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 7bit Precedence: bulk X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 References: X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 *** EOOH *** Date: Mon, 03 May 2004 11:03:55 -0600 From: Steve Davis Subject: Re: RE: Carrousel noise errors Sender: owner-linac-eng@plato.aristotle.net To: scot thiesson , "'Caunt, Peter'" , "Linac Eng (E-mail)" X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 If you change the pot you need to be careful when you do the alignment. The pot that is used is a continuous turn pot and there are 2 positions that will give you the required voltage setting. One is constant and the other is momentary. I think the voltage you are looking for is 5volts. Steve Davis New Mexico Oncology Hematology Consultants. 4901 Lang Ave. NE Albuquerque, N.M. 87109 505-379-7665 steved@nmohc.com ----- Original Message ----- From: "scot thiesson" To: "'Caunt, Peter'" ; "Linac Eng (E-mail)" Sent: Monday, May 03, 2004 8:33 AM Subject: Re: RE: Carrousel noise errors > I have seen this problem and it was a bad pot. I assumed that measuring the pot voltage would point me in the right > direction but I was wrong. We chased many things before we decided to try changing the pot, which fixed things nicely. > Observe the motion of the carrousel chain. It should move very smoothly throughout the travel from port to port (no > jerkiness) and not hunt at all for the final 5 volt resting position (pin down). There are different stresses on the carrousel > with changes in gantry position so this could possibly explain your 'same time occasional days' observance. > > > Scot Thiesson > Senior Physics Tech. > Allan Blair Cancer Centre > Regina Saskatchewan > Canada > > 5/3/2004 6:44:12 AM, "Maddox, Buford J" wrote: > > >I have seen pin seating problems show up as error 99, noise. Usually cured by a > >new switch or adjusting the old one so that it is not on the edge of its > >operating range. May have loctite on the adjustment. I have heard that a bad > >pot does this also, haven't seen it. > >Afternoon at the same time sounds like the same patient, so you may have a > >pattern/sequence sensitive fault. > >I hope you like a challenge! Love those intermittents! Just went through a > >bunch on another brand, cmos damaged by nearby arcing, many nights. > >Jerry > > > >-----Original Message----- > >From: owner-linac-eng@plato.aristotle.net > >[mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Caunt, Peter > >Sent: Monday, May 03, 2004 2:07 AM > >To: Linac Eng (E-mail) > >Subject: Carrousel noise errors > > > > > >Listmembers, > > I am seeking assistance on an intermittent > >problem that causes carrousel failures on a two-year-old C3 2100CD, one of > >those problems not wished upon anyone. > > > >Error occurs in the afternoon at around the same time but on occasional > >days. > > > >Error code 99 - noise problems > > > >Carrousel lubricated and in good condition. > >BCD switches changed and adjusted, fault still exists. > >Not the Carrousel/Bmag board. > >Port lock pin homes and operates satisfactorily-air pressure, solenoid OK. > > > >Wondering if anyone has chased this down before, any expertise on this > >problem greatly appreciated. > > > >Many thanks for the opportunity to raise the question. > > > >Regards, > > > >Peter Caunt > >Radiotherapy Department > >Canberra, Australia. > > > >"Important: This transmission is intended only for the use of the addressee > >and may contain confidential or legally privileged information. > >If you are not the intended recipient, you are notified that any use or > >dissemination of this communication is strictly prohibited. If you receive > >this transmission in error please notify the author immediately and delete > >all copies of this transmission." > > > > > > > >--------------------------------------------------------------------------- - > >------------------------------------------ > > This email, and any attachments, may be confidential and also privileged. > >If you are not the intended recipient: > >Please notify the sender and delete all copies of this transmission along > >with any attachments immediately. > >You should not copy or use it for any purpose, nor disclose its contents to > >any other person. > >--------------------------------------------------------------------------- - > >------------------------------------------ > > > >  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HX5009E3KVZ1I@hubbard.azu.nl>; Mon, 3 May 2004 21:31:16 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050321311004586 ; Mon, 03 May 2004 21:31:10 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id VAA15215; Mon, 03 May 2004 21:31:21 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma015170; Mon, 03 May 2004 21:30:45 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id MAA05767 for linac-eng-list; Mon, 03 May 2004 12:23:16 -0500 (CDT) Received: from phsornt422.or.providence.org (phsor-nat2.providence.org [170.220.2.14]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id MAA05763 for ; Mon, 03 May 2004 12:23:15 -0500 (CDT) Received: from PickupDirectory by phsornt422.or.providence.org with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2653.13) id 20W9431L; Mon, 03 May 2004 10:20:49 -0700 Received: from phsorcon06.or.providence.org ([170.220.78.187]) by phsornt422.or.providence.org with Microsoft SMTPSVC(5.0.2195.6713); Mon, 03 May 2004 10:20:48 -0700 Received: from phsormsg02.or.providence.org ([170.220.75.191]) by phsorcon06.or.providence.org with Microsoft SMTPSVC(5.0.2195.6713); Mon, 03 May 2004 10:20:13 -0700 Date: Mon, 03 May 2004 10:20:40 -0700 From: JamesR.Wilson@providence.org Subject: RE: Carrousel noise errors Sender: owner-linac-eng@plato.aristotle.net To: Peter.Caunt@act.gov.au, linac-eng@plato.aristotle.net Message-id: <0838AEB7ABB0C04481781A84D6DE7C6C19F3D7@phsormsg02.or.providence.org> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 8bit Importance: normal Precedence: bulk X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 Content-Class: urn:content-classes:message Thread-Topic: Carrousel noise errors thread-index: AcQw3DNMZrDKE+FGSUiTC9AQY4N3VgARk4Jg X-OriginalArrivalTime: 03 May 2004 17:20:13.0764 (UTC) FILETIME=[E541D840:01C43132] X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id MAA05764 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 03 May 2004 10:20:40 -0700 From: JamesR.Wilson@providence.org Subject: RE: Carrousel noise errors Sender: owner-linac-eng@plato.aristotle.net To: Peter.Caunt@act.gov.au, linac-eng@plato.aristotle.net Importance: normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 Content-Class: urn:content-classes:message Thread-Topic: Carrousel noise errors thread-index: AcQw3DNMZrDKE+FGSUiTC9AQY4N3VgARk4Jg X-OriginalArrivalTime: 03 May 2004 17:20:13.0764 (UTC) FILETIME=[E541D840:01C43132] X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id MAA05764 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Peter, does this give you both carr/foil interlocks, or one or the other?? Thanks, Jim Wilson Clinical Engineering Providence Health System Portland Or. -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net] On Behalf Of Caunt, Peter Sent: Sunday, May 02, 2004 11:07 PM To: Linac Eng (E-mail) Subject: Carrousel noise errors Listmembers, I am seeking assistance on an intermittent problem that causes carrousel failures on a two-year-old C3 2100CD, one of those problems not wished upon anyone. Error occurs in the afternoon at around the same time but on occasional days. Error code 99 - noise problems Carrousel lubricated and in good condition. BCD switches changed and adjusted, fault still exists. Not the Carrousel/Bmag board. Port lock pin homes and operates satisfactorily-air pressure, solenoid OK. Wondering if anyone has chased this down before, any expertise on this problem greatly appreciated. Many thanks for the opportunity to raise the question. Regards, Peter Caunt Radiotherapy Department Canberra, Australia. "Important: This transmission is intended only for the use of the addressee and may contain confidential or legally privileged information. If you are not the intended recipient, you are notified that any use or dissemination of this communication is strictly prohibited. If you receive this transmission in error please notify the author immediately and delete all copies of this transmission." ------------------------------------------------------------------------ ---- ------------------------------------------ This email, and any attachments, may be confidential and also privileged. If you are not the intended recipient: Please notify the sender and delete all copies of this transmission along with any attachments immediately. You should not copy or use it for any purpose, nor disclose its contents to any other person. ------------------------------------------------------------------------ ---- ------------------------------------------ DISCLAIMER: This message is intended for the sole use of the addressee, and may contain information that is privileged, confidential and exempt from disclosure under applicable law. If you are not the addressee you are hereby notified that you may not use, copy, disclose, or distribute to anyone the message or any information contained in the message. If you have received this message in error, please immediately advise the sender by reply email and delete this message.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HX500IVTV9BPU@hubbard.azu.nl>; Tue, 4 May 2004 01:15:12 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050401151008109 ; Tue, 04 May 2004 01:15:10 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id BAA07493; Tue, 04 May 2004 01:15:21 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma007489; Tue, 04 May 2004 01:15:15 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id QAA15000 for linac-eng-list; Mon, 03 May 2004 16:16:36 -0500 (CDT) Received: from 17RADLAPPC01 ([65.174.193.129]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id QAA14996 for ; Mon, 03 May 2004 16:16:34 -0500 (CDT) Date: Mon, 03 May 2004 17:15:59 -0400 From: Scott Mange Subject: Gun Replacement Down Time Sender: owner-linac-eng@plato.aristotle.net X-Sender: smange@mailhost.det.ameritech.net To: meDPHYS@LISTS.WAYNE.EDU, linac-eng@plato.aristotle.net Message-id: <5.1.0.14.2.20040503171015.00a68040@mailhost.det.ameritech.net> MIME-version: 1.0 X-Mailer: QUALCOMM Windows Eudora Version 5.1 Content-type: MULTIPART/MIXED; BOUNDARY="Boundary_(ID_Mk5ReY8+Yzq39jON8yhNkA)"; x-avg-checked=avg-ok-C20629B Precedence: bulk X-GCMulti: 1 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 03 May 2004 17:15:59 -0400 From: Scott Mange Subject: Gun Replacement Down Time Sender: owner-linac-eng@plato.aristotle.net X-Sender: smange@mailhost.det.ameritech.net To: meDPHYS@LISTS.WAYNE.EDU, linac-eng@plato.aristotle.net X-GCMulti: 1 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f --Boundary_(ID_Mk5ReY8+Yzq39jON8yhNkA) Content-type: text/plain; format=flowed; charset=us-ascii; x-avg-checked=avg-ok-C20629B Content-transfer-encoding: 8bit Dear Listers, We're thinking of scheduling some down time on our Varian 1800 to have our service engineer change an ion pump and on his advice, the ion gun. I've no experience doing this. My questions are: 1) What is a typical time to replace the gun, bring the machine back up and start treating patients again? Tales from your actual experience along with theoretical values are accepted. 2) What unexpected things can happen during this procedure with which I must be aware? Will the beams need to be re-scanned? Likely to lose the target? Again, tales of your actual experience are encouraged. Thank you in advance for your help with this. Sincerely Yours, Scott Mange --Boundary_(ID_Mk5ReY8+Yzq39jON8yhNkA) Content-type: text/plain; x-avg-checked=avg-ok-C20629B; x-avg=cert; charset=us-ascii Content-disposition: inline --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.676 / Virus Database: 438 - Release Date: 5/3/04 --Boundary_(ID_Mk5ReY8+Yzq39jON8yhNkA)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HX500L8EWG1TC@hubbard.azu.nl>; Tue, 4 May 2004 01:40:55 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050401405208365 ; Tue, 04 May 2004 01:40:52 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id BAA09276; Tue, 04 May 2004 01:41:03 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma009247; Tue, 04 May 2004 01:40:57 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id QAA15636 for linac-eng-list; Mon, 03 May 2004 16:46:06 -0500 (CDT) Received: from bhcpns.org ([199.190.155.93]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id QAA15631; Mon, 03 May 2004 16:46:04 -0500 (CDT) Received: from ([10.5.30.69]) by ironmail.bhcpns.org with ESMTP ; Mon, 03 May 2004 16:44:13 -0500 (CDT) Date: Mon, 03 May 2004 16:43:18 -0500 From: lsullivan@bhcpns.org Subject: Re: IMRT In-reply-to: Sender: owner-linac-eng@plato.aristotle.net To: "Lockhart, Ryan" Cc: 'clinac listserve' , owner-linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Lotus Notes Release 6.5.1 January 21, 2004 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_YZcCRZNUEul7jYR5/vmtDA)" Precedence: bulk X-MIMETrack: Serialize by Router on BHCMail1/PNS/BHC_Notes(Release 6.5.1|January 21, 2004) at 05/03/2004 04:43:19 PM, Serialize complete at 05/03/2004 04:43:19 PM X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 03 May 2004 16:43:18 -0500 From: lsullivan@bhcpns.org Subject: Re: IMRT In-reply-to: Sender: owner-linac-eng@plato.aristotle.net To: "Lockhart, Ryan" Cc: 'clinac listserve' , owner-linac-eng@plato.aristotle.net X-MIMETrack: Serialize by Router on BHCMail1/PNS/BHC_Notes(Release 6.5.1|January 21, 2004) at 05/03/2004 04:43:19 PM, Serialize complete at 05/03/2004 04:43:19 PM X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This is a multipart message in MIME format. --Boundary_(ID_YZcCRZNUEul7jYR5/vmtDA) Content-type: text/plain; charset=US-ASCII Ryan. We have been doing IMRT here at Baptist Hospital for over a year with 6ex . the machine was installed Dec 02 and operational march 03 we average 20 to 25 patients a day that are all IMRT, we have replaced 7 half leaf and 8 or 9 full leaf motors since start up and a few t nuts have have broken . We also have a 2100 with 80 leaf now running about 5 months and though it still is under warranty I do first look and don't really see any real problems as yet... We don't allow sheets or towels in vaults and try to keep rooms as dust and lint free as possible. O yes these are all MMLC and I have no complaints " Probably will after this post though" Good luck though as everyone's units will be different. Larry Sullivan Baptist Hospital Pensacola FL ----------------------------------------- All electronic mail communications originating from or transmitted to Baptist Health Care, Inc. are subject to monitoring. This message and the information contained in it, which may consist of electronic data attachments, are the confidential and proprietary communications of Baptist Health Care and are intended to be received only by the individual or individuals to whom the message has been addressed. If the reader of this message is not the intended recipient, please take notice that any use, copying, printing, forwarding or distribution of this message, in any form, is strictly prohibited. If you have received this message in error, please immediately notify the Baptist Health Care Privacy Officer at (850) 434-4472 and/or forward the message to hipaa@bhcpns.org and delete or destroy all copies of this message. --Boundary_(ID_YZcCRZNUEul7jYR5/vmtDA) Content-type: text/html; charset=US-ASCII
Ryan.                  We have been doing IMRT here at Baptist Hospital for over a year with 6ex . the machine was installed Dec 02 and operational march 03
        we average 20 to 25 patients a day that are all IMRT,   we have replaced 7 half leaf and 8 or 9 full leaf motors since start up and a few t nuts have  
        have broken . We also have a 2100 with 80 leaf now running about 5 months and though it still is under warranty I do first look and don't really see                        any real problems as yet... We don't allow sheets or towels in vaults and try to keep rooms as dust and lint free as possible. O yes these are all        MMLC  and I have no complaints " Probably will after this post though"   Good luck though as everyone's units will be different.


Larry Sullivan
Baptist Hospital
Pensacola FL

All electronic mail communications originating from or transmitted to Baptist Health Care, Inc. are subject to monitoring. This message and the information contained in it, which may consist of electronic data attachments, are the confidential and proprietary communications of Baptist Health Care and are intended to be received only by the individual or individuals to whom the message has been addressed. If the reader of this message is not the intended recipient, please take notice that any use, copying, printing, forwarding or distribution of this message, in any form, is strictly prohibited. If you have received this message in error, please immediately notify the Baptist Health Care Privacy Officer at (850) 434-4472 and/or forward the message to hipaa@bhcpns.org and delete or destroy all copies of this message.

--Boundary_(ID_YZcCRZNUEul7jYR5/vmtDA)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HX500102YBC4L@hubbard.azu.nl>; Tue, 4 May 2004 02:21:13 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050402211208759 ; Tue, 04 May 2004 02:21:12 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id CAA12208; Tue, 04 May 2004 02:21:22 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma012186; Tue, 04 May 2004 02:20:55 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id RAA16206 for linac-eng-list; Mon, 03 May 2004 17:22:19 -0500 (CDT) Received: from lycos.com (www5.mail.lycos.com [209.202.220.85]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id RAA16202 for ; Mon, 03 May 2004 17:22:17 -0500 (CDT) Received: from Unknown/Local ([?.?.?.?]) by mailcity.com; Mon, 03 May 2004 22:21:38 +0000 Date: Mon, 03 May 2004 18:21:38 -0400 From: david hall Subject: RE: Carrousel noise errors Sender: owner-linac-eng@plato.aristotle.net To: Peter.Caunt@act.gov.au, linac-eng@plato.aristotle.net, JamesR.Wilson@providence.org Reply-to: hall.david@lycos.com Message-id: Organization: Lycos Mail (http://www.mail.lycos.com:80) MIME-version: 1.0 X-Mailer: MailCity Service Content-type: text/plain; charset=us-ascii Content-language: en Content-transfer-encoding: 7bit Precedence: bulk X-Sent-Mail: off X-Sender-Ip: 67.127.229.88 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 *** EOOH *** Date: Mon, 03 May 2004 18:21:38 -0400 From: david hall Subject: RE: Carrousel noise errors Sender: owner-linac-eng@plato.aristotle.net To: Peter.Caunt@act.gov.au, linac-eng@plato.aristotle.net, JamesR.Wilson@providence.org Reply-to: hall.david@lycos.com Organization: Lycos Mail (http://www.mail.lycos.com:80) Content-language: en X-Sent-Mail: off X-Sender-Ip: 67.127.229.88 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 Varian adds a cap to the co mode pcb. It was a tech tip at one time, they may have generated a CTB. Dave Hall -- --------- Original Message --------- DATE: Mon, 3 May 2004 10:20:40 From: JamesR.Wilson@providence.org To: , Cc: >Peter, does this give you both carr/foil interlocks, or one or the >other?? Thanks, > >Jim Wilson >Clinical Engineering >Providence Health System >Portland Or. > >-----Original Message----- >From: owner-linac-eng@plato.aristotle.net >[mailto:owner-linac-eng@plato.aristotle.net] On Behalf Of Caunt, Peter >Sent: Sunday, May 02, 2004 11:07 PM >To: Linac Eng (E-mail) >Subject: Carrousel noise errors > >Listmembers, > I am seeking assistance on an intermittent >problem that causes carrousel failures on a two-year-old C3 2100CD, one >of >those problems not wished upon anyone. > >Error occurs in the afternoon at around the same time but on occasional >days. > >Error code 99 - noise problems > >Carrousel lubricated and in good condition. >BCD switches changed and adjusted, fault still exists. >Not the Carrousel/Bmag board. >Port lock pin homes and operates satisfactorily-air pressure, solenoid >OK. > >Wondering if anyone has chased this down before, any expertise on this >problem greatly appreciated. > >Many thanks for the opportunity to raise the question. > >Regards, > >Peter Caunt >Radiotherapy Department >Canberra, Australia. > >"Important: This transmission is intended only for the use of the >addressee >and may contain confidential or legally privileged information. >If you are not the intended recipient, you are notified that any use or >dissemination of this communication is strictly prohibited. If you >receive >this transmission in error please notify the author immediately and >delete >all copies of this transmission." > > > >------------------------------------------------------------------------ >---- >------------------------------------------ > This email, and any attachments, may be confidential and also >privileged. >If you are not the intended recipient: >Please notify the sender and delete all copies of this transmission >along >with any attachments immediately. >You should not copy or use it for any purpose, nor disclose its contents >to >any other person. >------------------------------------------------------------------------ >---- >------------------------------------------ > > >DISCLAIMER: >This message is intended for the sole use of the addressee, and may contain information that is privileged, confidential and exempt from disclosure under applicable law. If you are not the addressee you are hereby notified that you may not use, copy, disclose, or distribute to anyone the message or any information contained in the message. If you have received this message in error, please immediately advise the sender by reply email and delete this message. > ____________________________________________________________ Find what you are looking for with the Lycos Yellow Pages http://r.lycos.com/r/yp_emailfooter/http://yellowpages.lycos.com/default.asp?SRC=lycos10  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HX6003J8255C0@hubbard.azu.nl>; Tue, 4 May 2004 03:44:00 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050403435709558 ; Tue, 04 May 2004 03:43:57 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id DAA17895; Tue, 04 May 2004 03:44:08 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma017856; Tue, 04 May 2004 03:43:55 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id SAA19997 for linac-eng-list; Mon, 03 May 2004 18:53:41 -0500 (CDT) Received: from adl0133.systems.sa.gov.au (adl0133.systems.sa.gov.au [143.216.236.20]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id SAA19991 for ; Mon, 03 May 2004 18:53:38 -0500 (CDT) Received: from adl0133.systems.sa.gov.au (localhost [127.0.0.1]) by adl0133.systems.sa.gov.au OUTGOING (8.12.10/8.12.7) with ESMTP id i43NrNvx006338 for ; Tue, 04 May 2004 09:23:23 +0930 (CST) Received: from rahsun153.rah.sa.gov.au (mailhub.rah.sa.gov.au [10.19.241.188]) by adl0133.systems.sa.gov.au INCOMING (8.12.10/8.12.7) with ESMTP id i43NrMU0006327 for ; Tue, 04 May 2004 09:23:22 +0930 (CST) Received: from mail.rah.sa.gov.au (MERCURY-1 [10.19.241.90]) by rahsun153.rah.sa.gov.au (8.12.9/8.12.8) with ESMTP id i43NrHc4004049 for ; Tue, 04 May 2004 09:23:22 +0930 (CST) Received: from Spooler by mail.rah.sa.gov.au (Mercury/32 v4.01a) ID MO00034C; Tue, 04 May 2004 09:23:22 +0930 Received: from spooler by mail.rah.sa.gov.au (Mercury/32 v4.01a); Tue, 04 May 2004 09:23:07 +0930 Date: Tue, 04 May 2004 09:19:18 +0930 From: Andrew Frolov Subject: Re: Enhanced Gantry Readout 21EX In-reply-to: <200404290014.i3T0EaqR026618@rahsun153.rah.sa.gov.au> Sender: owner-linac-eng@plato.aristotle.net To: Linac-Eng Message-id: <200405032353.i43NrHc4004049@rahsun153.rah.sa.gov.au> Organization: Royal Adelaide Hospital MIME-version: 1.0 X-Mailer: Pegasus Mail for Win32 (v3.12a) Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 04 May 2004 09:19:18 +0930 From: Andrew Frolov Subject: Re: Enhanced Gantry Readout 21EX In-reply-to: <200404290014.i3T0EaqR026618@rahsun153.rah.sa.gov.au> Sender: owner-linac-eng@plato.aristotle.net To: Linac-Eng Organization: Royal Adelaide Hospital X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f I would like to thank everybody who replied to my posting for your suggestions. As the reset button would not clear the problem, yesterday I connected a keyboard to the computer and checked the BIOS settings. I did not find anything suspicious, left BIOS and rebooted the computer. This time the display appeared normally, not corrupted, and advised that set up error was corrected (by whom???). It stopped at "F1 to continue" prompt. Pressing F1 loaded MSDOS and then the application. After that I tried to reboot the computer several times with the same result - it stopped and continued to boot up only upon pressing F1. This means that our problem has been solved partially. Every time we lose power we will have to take the cover off and connect the keyboard in order to make readout working. I could not identify any setting in BIOS that relates to boot up sequence. Does anybody know what I can change in BIOS in order to make the computer booting up properly? Or, if anybody have a copy of all BIOS settings, I will appreciate if you can send it to me. Best regards, Andrew Frolov From: "Andrew Frolov" Organization: Royal Adelaide Hospital To: "Linac-Eng" Date sent: Thu, 29 Apr 2004 09:38:39 +0930 Subject: Enhanced Gantry Readout 21EX > Hi everybody, > > This morning we experienced a problem with the gantry readout. After the power failure overnight > the readout computer boots up to the DOS prompt and stays there with the following messages > > >301 - Keyboard error > >162 - System option not set (Run setup) 24/00 > > >(Resume F1 key) > >Press F10 to run setup. > > Since no keyboard being connected to the computer and we do not have any documentation for this > system, we do not know what to do next. > > The display itself is split into tree parts with similar content and blinking cursor in each of > them. All lines appear to be squashed vertically. > > Any suggestions will be appreciated. > > Cheers, > > > Andrew Frolov > Manager, RE > Royal Adelaide Hospital > > Tel: 61 8 8222 5674 > Fax: 61 8 8222 5937 > > email afrolov@mail.rah.sa.gov.au Andrew Frolov Manager, RE Royal Adelaide Hospital Tel: 61 8 8222 5674 Fax: 61 8 8222 5937 email afrolov@mail.rah.sa.gov.au  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HX600FEMDEZD4@hubbard.azu.nl>; Tue, 4 May 2004 07:47:26 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050407472212615 ; Tue, 04 May 2004 07:47:22 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id HAA07510; Tue, 04 May 2004 07:47:33 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma007498; Tue, 04 May 2004 07:47:09 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id XAA24392 for linac-eng-list; Mon, 03 May 2004 23:06:39 -0500 (CDT) Received: from gondor.dpa.act.gov.au (gondor.dpa.act.gov.au [136.153.2.50]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id XAA24388 for ; Mon, 03 May 2004 23:06:36 -0500 (CDT) Received: (from smap@localhost) by gondor.dpa.act.gov.au (8.11.1/8.11.1) id i4446Uf11134 for ; Tue, 04 May 2004 14:06:30 +1000 (EST) Received: from unknown(10.226.2.7) by gondor via smap (V5.5) id xma011004; Tue, 04 May 2004 14:06:25 +1000 Received: by cal007.dpa.act.gov.au with Internet Mail Service (5.5.2657.72) id ; Tue, 04 May 2004 14:06:25 +1000 Date: Tue, 04 May 2004 14:06:19 +1000 From: "Caunt, Peter" Subject: RE:Carrousel noise errors. Sender: owner-linac-eng@plato.aristotle.net To: "Linac Eng (E-mail)" Message-id: <2FC7DBCD6D6AD611AD7B0090278CABAEE79E7F@CAL030> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 04 May 2004 14:06:19 +1000 From: "Caunt, Peter" Subject: RE:Carrousel noise errors. Sender: owner-linac-eng@plato.aristotle.net To: "Linac Eng (E-mail)" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Listservmembers, A collective thanks to all those who responded with information and suggestions on this problem, I now have some additional areas to investigate. In response to the information, the status thus far : (1) I see both carr and foil interlocks. (2) Not a individual board problem-changed with spare and same problem. (3) Carrousel pot position varied and then changed (pin in at +5volts), monitored voltage at Bmag board during gantry rotation - all stable. (4) Pin is correctly seating, voltage observed as above. (5) All data lines pulling up to correct voltage, waveforms look fine. (6) Power supply voltages appear stable (though not observed at fault) (7) Have had allen keys grafted onto fingers to assist in lead shielding removal The STB recommendation is an interesting piece of information. Anyway, thanks again. Regards, Peter Caunt. Canberra, Australia. "Important: This transmission is intended only for the use of the addressee and may contain confidential or legally privileged information. If you are not the intended recipient, you are notified that any use or dissemination of this communication is strictly prohibited. If you receive this transmission in error please notify the author immediately and delete all copies of this transmission." ---------------------------------------------------------------------------- ------------------------------------------ This email, and any attachments, may be confidential and also privileged. If you are not the intended recipient: Please notify the sender and delete all copies of this transmission along with any attachments immediately. You should not copy or use it for any purpose, nor disclose its contents to any other person. ---------------------------------------------------------------------------- ------------------------------------------  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HX600FX6SJL90@hubbard.azu.nl>; Tue, 4 May 2004 13:14:10 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050413140324710 ; Tue, 04 May 2004 13:14:03 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id NAA06462; Tue, 04 May 2004 13:14:14 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma006385; Tue, 04 May 2004 13:13:38 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id EAA28360 for linac-eng-list; Tue, 04 May 2004 04:18:45 -0500 (CDT) Received: from intfw1.phci.org (user.phci.org [207.67.109.70]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id EAA28356 for ; Tue, 04 May 2004 04:18:42 -0500 (CDT) Received: from intfw1.phci.org (root@localhost) by intfw1.phci.org with ESMTP id i449IASW011932 for ; Tue, 04 May 2004 04:18:10 -0500 (CDT) Received: from zixvpm00.phci.org (zixvpm01.phci.org [172.20.3.21]) by intfw1.phci.org with ESMTP id i449IATo011926 for ; Tue, 04 May 2004 04:18:10 -0500 (CDT) Received: from zixvpm01.phci.org (ZixVPM [127.0.0.1]) by Outbound.phci.org (Proprietary) with ESMTP id CCAC31A4091 for ; Tue, 04 May 2004 04:18:09 -0500 (CDT) Received: from smtpscan.phci.org (smtpscan.phci.org [172.20.3.10]) by zixvpm00.phci.org (Proprietary) with SMTP id 74ECC1A0052; Tue, 04 May 2004 04:18:06 -0500 (CDT) Received: from wmhmail1.phci.org ([IP=10.1.1.28]) by eSafe SMTP Relay 1083619743; Tue May 4 04:42:56 2004 Received: by wmhmail1.phci.org with Internet Mail Service (5.5.2657.72) id <234GXXJK>; Tue, 04 May 2004 04:18:05 -0500 Date: Tue, 04 May 2004 04:18:03 -0500 From: "Williams, Rod" Subject: RE: Carrousel noise errors. Sender: owner-linac-eng@plato.aristotle.net To: "'Caunt, Peter'" , "Linac Eng (E-mail)" Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_m1q/kze2TIJ8upaZjT8eKw)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 04 May 2004 04:18:03 -0500 From: "Williams, Rod" Subject: RE: Carrousel noise errors. Sender: owner-linac-eng@plato.aristotle.net To: "'Caunt, Peter'" , "Linac Eng (E-mail)" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_m1q/kze2TIJ8upaZjT8eKw) Content-type: text/plain; charset=iso-8859-1 Just to add to the list of problems found, I had a intermittent carr, foil with a 99 error, ended up replacing the air manifold assy. Problem GONE. This was on 2100EX S/N 1368. Listservmembers, A collective thanks to all those who responded with information and suggestions on this problem, I now have some additional areas to investigate. In response to the information, the status thus far : (1) I see both carr and foil interlocks. (2) Not a individual board problem-changed with spare and same problem. (3) Carrousel pot position varied and then changed (pin in at +5volts), monitored voltage at Bmag board during gantry rotation - all stable. (4) Pin is correctly seating, voltage observed as above. (5) All data lines pulling up to correct voltage, waveforms look fine. (6) Power supply voltages appear stable (though not observed at fault) (7) Have had allen keys grafted onto fingers to assist in lead shielding removal The STB recommendation is an interesting piece of information. Anyway, thanks again. Regards, Peter Caunt. Canberra, Australia. This information is confidential and intended solely for the use of the individual or entity to whom it is addressed. If you have received this email in error please notify the sender or our Customer Support Center at (262) 928-2777. We have scanned this email and its attachments for malicious content. However, the recipient should check this email and any attachments for the presence of viruses. ProHealth Care accepts no liability for any damage caused by any virus transmitted by this email. --Boundary_(ID_m1q/kze2TIJ8upaZjT8eKw) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: quoted-printable RE: Carrousel noise errors.

Just to add to the list of problems found, I had a inte= rmittent carr, foil with a 99 error, ended up replacing the air manifold = assy. Problem GONE. This was on 2100EX S/N 1368.






Listservmembers,
         =             &= nbsp;   A collective thanks to all those who responded with
information and suggestions on this problem, I now hav= e some additional
areas to investigate.

In response to the information, the status thus far :

(1)     I see both carr and foil in= terlocks.
(2)     Not a individual board pro= blem-changed with spare and same problem.
(3)     Carrousel pot position var= ied and then changed (pin in at +5volts),
monitored voltage at Bmag board during gantry rotation= - all stable.
(4)     Pin is correctly seating, = voltage observed as above.
(5)     All data lines pulling up = to correct voltage, waveforms look fine.
(6)     Power supply voltages appe= ar stable (though not observed at fault)
(7)     Have had allen keys grafte= d onto fingers to assist in lead shielding
removal

The STB recommendation is an interesting piece of infor= mation.

Anyway, thanks again.

Regards,


Peter Caunt.
Canberra, Australia.
 


This information is confidential and intended solely fo= r the use of the individual or entity to whom it is addressed.
If you have received this email in error please notify= the sender or our Customer Support Center at (262) 928-2777.

We have scanned this email and its attachments for mali= cious content.
However, the recipient should check this email and any= attachments for the presence of viruses.
ProHealth Care accepts no liability for any damage cau= sed by any virus transmitted by this email.

--Boundary_(ID_m1q/kze2TIJ8upaZjT8eKw)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HX600ETPSWHJD@hubbard.azu.nl>; Tue, 4 May 2004 13:22:05 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050413215624975 ; Tue, 04 May 2004 13:21:56 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id NAA07824; Tue, 04 May 2004 13:22:07 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma007753; Tue, 04 May 2004 13:21:34 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id EAA28375 for linac-eng-list; Tue, 04 May 2004 04:22:24 -0500 (CDT) Received: from intfw2.phci.org (user.phci.org [207.67.109.70]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id EAA28371 for ; Tue, 04 May 2004 04:22:23 -0500 (CDT) Received: from intfw2.phci.org (root@localhost) by intfw2.phci.org with ESMTP id i449LomW011340 for ; Tue, 04 May 2004 04:21:50 -0500 (CDT) Received: from zixvpm00.phci.org (zixvpm02.phci.org [172.20.3.22]) by intfw2.phci.org with ESMTP id i449Lo7N011334 for ; Tue, 04 May 2004 04:21:50 -0500 (CDT) Received: from zixvpm02.phci.org (ZixVPM [127.0.0.1]) by Outbound.phci.org (Proprietary) with ESMTP id 777C91C0073 for ; Tue, 04 May 2004 04:21:50 -0500 (CDT) Received: from smtpscan.phci.org (smtpscan.phci.org [172.20.3.10]) by zixvpm00.phci.org (Proprietary) with SMTP id F41421A407D; Tue, 04 May 2004 04:21:45 -0500 (CDT) Received: from wmhmail1.phci.org ([IP=10.1.1.28]) by eSafe SMTP Relay 1083619743; Tue May 4 04:46:36 2004 Received: by wmhmail1.phci.org with Internet Mail Service (5.5.2657.72) id <234GXXJL>; Tue, 04 May 2004 04:21:45 -0500 Date: Tue, 04 May 2004 04:21:35 -0500 From: "Williams, Rod" Subject: RE: Enhanced Gantry Readout 21EX Sender: owner-linac-eng@plato.aristotle.net To: 'Andrew Frolov' , Linac-Eng Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_CJzy+F5GLkalhBVR2egcEQ)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 04 May 2004 04:21:35 -0500 From: "Williams, Rod" Subject: RE: Enhanced Gantry Readout 21EX Sender: owner-linac-eng@plato.aristotle.net To: 'Andrew Frolov' , Linac-Eng X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_CJzy+F5GLkalhBVR2egcEQ) Content-type: text/plain; charset=iso-8859-1 It does sound like a plug and play thing in the bios, but did you try to reload the program from the floppy drive.???? -- I would like to thank everybody who replied to my posting for your suggestions. As the reset button would not clear the problem, yesterday I connected a keyboard to the computer and checked the BIOS settings. I did not find anything suspicious, left BIOS and rebooted the computer. This time the display appeared normally, not corrupted, and advised that set up error was corrected (by whom???). It stopped at "F1 to continue" prompt. Pressing F1 loaded MSDOS and then the application. After that I tried to reboot the computer several times with the same result - it stopped and continued to boot up only upon pressing F1. This means that our problem has been solved partially. Every time we lose power we will have to take the cover off and connect the keyboard in order to make readout working. I could not identify any setting in BIOS that relates to boot up sequence. Does anybody know what I can change in BIOS in order to make the computer booting up properly? Or, if anybody have a copy of all BIOS settings, I will appreciate if you can send it to me. Best regards, Andrew Frolov From: "Andrew Frolov" Organization: Royal Adelaide Hospital To: "Linac-Eng" Date sent: Thu, 29 Apr 2004 09:38:39 +0930 Subject: Enhanced Gantry Readout 21EX > Hi everybody, > > This morning we experienced a problem with the gantry readout. After the power failure overnight > the readout computer boots up to the DOS prompt and stays there with the following messages > > >301 - Keyboard error > >162 - System option not set (Run setup) 24/00 > > >(Resume F1 key) > >Press F10 to run setup. > > Since no keyboard being connected to the computer and we do not have any documentation for this > system, we do not know what to do next. > > The display itself is split into tree parts with similar content and blinking cursor in each of > them. All lines appear to be squashed vertically. > > Any suggestions will be appreciated. > > Cheers, > > > Andrew Frolov > Manager, RE > Royal Adelaide Hospital > > Tel: 61 8 8222 5674 > Fax: 61 8 8222 5937 > > email afrolov@mail.rah.sa.gov.au Andrew Frolov Manager, RE Royal Adelaide Hospital Tel: 61 8 8222 5674 Fax: 61 8 8222 5937 email afrolov@mail.rah.sa.gov.au This information is confidential and intended solely for the use of the individual or entity to whom it is addressed. If you have received this email in error please notify the sender or our Customer Support Center at (262) 928-2777. We have scanned this email and its attachments for malicious content. However, the recipient should check this email and any attachments for the presence of viruses. ProHealth Care accepts no liability for any damage caused by any virus transmitted by this email. --Boundary_(ID_CJzy+F5GLkalhBVR2egcEQ) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: quoted-printable RE: Enhanced Gantry Readout 21EX

It does sound like a plug and play thing in the bios, b= ut did you try to reload the program from the floppy drive.????

--

I would like to thank everybody who replied to my posti= ng for your suggestions.

As the reset button would not clear the problem, yester= day I connected a keyboard to the computer
and checked the BIOS settings. I did not find anything= suspicious, left BIOS and rebooted the
computer. This time the display appeared normally, not= corrupted, and advised that set up error was
corrected (by whom???). It stopped at "F1 to cont= inue" prompt. Pressing F1 loaded MSDOS and then
the application.

After that I tried to reboot the computer several times= with the same result - it stopped and
continued to boot up only upon pressing F1. This means= that our problem has been  solved partially.
Every time we lose power we will have to take the cove= r off and connect the keyboard in order to
make readout working.

I could not identify any setting in BIOS that relates t= o boot up sequence. Does anybody know what I
can change in BIOS in order to make the computer booti= ng up properly? Or, if anybody have a copy of
all BIOS settings, I will appreciate if you can send i= t to me.

Best regards,

Andrew Frolov

From:        &n= bsp;          "Andrew Frolov= " <Afrolov@mail.rah.sa.gov.au>
Organization:       &nbs= p;   Royal Adelaide Hospital
To:        &nb= sp;            "Li= nac-Eng" <linac-eng@plato.aristotle.net>
Date sent:        &= nbsp;     Thu, 29 Apr 2004 09:38:39 +0930
Subject:        &nb= sp;       Enhanced Gantry Readout 21EX

> Hi everybody,
>
> This morning we experienced a problem with the ga= ntry readout. After the power failure overnight
> the readout computer boots up to the DOS prompt a= nd stays there with the following messages
>
> >301 - Keyboard error
> >162 - System option not set (Run setup) 24/00=
>
> >(Resume F1 key)
> >Press F10 to run setup.
>
> Since no keyboard being connected to the computer= and we do not have any documentation for this
> system, we do not know what to do next.
>
> The display itself is split into tree parts with = similar content and blinking cursor in each of
> them. All lines appear to be squashed vertically.=
>
> Any suggestions will be appreciated.
>
> Cheers,
>
>
> Andrew Frolov
> Manager, RE
> Royal Adelaide Hospital
>
> Tel: 61 8 8222 5674
> Fax: 61 8 8222 5937
>
> email afrolov@mail.rah.sa.gov.au


Andrew Frolov
Manager, RE
Royal Adelaide Hospital

Tel: 61 8 8222 5674
Fax: 61 8 8222 5937

email afrolov@mail.rah.sa.gov.au


This information is confidential and intended solely fo= r the use of the individual or entity to whom it is addressed.
If you have received this email in error please notify= the sender or our Customer Support Center at (262) 928-2777.

We have scanned this email and its attachments for mali= cious content.
However, the recipient should check this email and any= attachments for the presence of viruses.
ProHealth Care accepts no liability for any damage cau= sed by any virus transmitted by this email.

--Boundary_(ID_CJzy+F5GLkalhBVR2egcEQ)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HX7007AM2T34N@hubbard.azu.nl>; Tue, 4 May 2004 16:56:09 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050416560707359 ; Tue, 04 May 2004 16:56:07 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id QAA20152; Tue, 04 May 2004 16:56:18 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma019999; Tue, 04 May 2004 16:55:33 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id IAA00768 for linac-eng-list; Tue, 04 May 2004 08:02:57 -0500 (CDT) Received: from scmcmail.st-claire.org ([63.76.91.90]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id IAA00761 for ; Tue, 04 May 2004 08:02:54 -0500 (CDT) Received: by scmcmail.st-claire.org with Internet Mail Service (5.5.2655.55) id ; Tue, 04 May 2004 09:07:21 -0400 Date: Tue, 04 May 2004 09:07:11 -0400 From: "Conn, Calvin R." Subject: Re: Enhanced Gantry Readout 21EX Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <570A1A6B6FADD04DABC7B4CBCAE0F180015ABB20@scmcmail.st-claire.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2655.55) Content-type: text/plain; CHARSET=US-ASCII Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 04 May 2004 09:07:11 -0400 From: "Conn, Calvin R." Subject: Re: Enhanced Gantry Readout 21EX Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hello Andrew, I don't remember your original post exactly. But, it sounds like your CMOS battery was bad. Just by entering setup and saving you would clear your original messages. But, it does sound like you do not have the correct settings still. I don't remember if you mentioned what the computer you have was and since I don't have this system I can't tell from the system type. So I don't know what settings you need. Calvin R. Conn CRConn@st-claire.org  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HX700A1O599HR@hubbard.azu.nl>; Tue, 4 May 2004 17:48:51 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050417484008985 ; Tue, 04 May 2004 17:48:40 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id RAA29013; Tue, 04 May 2004 17:48:51 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma028965; Tue, 04 May 2004 17:48:19 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id IAA03217 for linac-eng-list; Tue, 04 May 2004 08:54:21 -0500 (CDT) Received: from titan.lhsc.on.ca (titan.lhsc.on.ca [142.158.2.20]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id IAA03213 for ; Tue, 04 May 2004 08:54:19 -0500 (CDT) Received: from mail.lrcc.on.ca (mail.lrcc.on.ca [142.158.120.242]) by titan.lhsc.on.ca (8.11.7p1+Sun/8.11.7) with SMTP id i44DrbW28730; Tue, 04 May 2004 09:53:37 -0400 (EDT) Received: by mail.lrcc.on.ca(Lotus SMTP MTA v4.6.7 (934.1 12-30-1999)) id 85256E8A.004C4E47 ; Tue, 04 May 2004 09:53:27 -0400 Date: Tue, 04 May 2004 09:53:26 -0400 From: Randy.McVittie@lrcc.on.ca Subject: Re: Gun Replacement Down Time Sender: owner-linac-eng@plato.aristotle.net To: Scott Mange Cc: meDPHYS@LISTS.WAYNE.EDU, linac-eng@plato.aristotle.net Message-id: <85256E8A.004C4DD1.00@mail.lrcc.on.ca> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Content-disposition: inline Precedence: bulk X-Lotus-FromDomain: LRCC X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 04 May 2004 09:53:26 -0400 From: Randy.McVittie@lrcc.on.ca Subject: Re: Gun Replacement Down Time Sender: owner-linac-eng@plato.aristotle.net To: Scott Mange Cc: meDPHYS@LISTS.WAYNE.EDU, linac-eng@plato.aristotle.net Content-disposition: inline X-Lotus-FromDomain: LRCC X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f I think that it would be worthwhile to change the target and gun at the same time. We have had 2 target failures here which leaked water into the guide, one was a huge leak and the gun had to be replaced. I think a gun costs about $15,000, and a target is around $3,000, so if your target is a few years old and you run a lot of 6x beam you could be faced with a target failure in your future. The time from to do a whole gun change is about 72h total, so it is best done over a weekend if you can, it might go a bit faster if your Varian rep has the Gun Processor. By the way, how many years and LV hours are on that gun? What was its mode of failure? Good luck Randy McVittie London Regional Cancer Centre - London Health Science Centre London, Ontario CANADA Scott Mange on 2004-05-03 17:15:59 To: meDPHYS@LISTS.WAYNE.EDU, linac-eng@plato.aristotle.net cc: (bcc: Randy McVittie/Lrcc) Subject: Gun Replacement Down Time Dear Listers, We're thinking of scheduling some down time on our Varian 1800 to have our service engineer change an ion pump and on his advice, the ion gun. I've no experience doing this. My questions are: 1) What is a typical time to replace the gun, bring the machine back up and start treating patients again? Tales from your actual experience along with theoretical values are accepted. 2) What unexpected things can happen during this procedure with which I must be aware? Will the beams need to be re-scanned? Likely to lose the target? Again, tales of your actual experience are encouraged. Thank you in advance for your help with this. Sincerely Yours, Scott Mange --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.676 / Virus Database: 438 - Release Date: 5/3/04  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HX700E6F7AOLM@hubbard.azu.nl>; Tue, 4 May 2004 18:32:56 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050418325510151 ; Tue, 04 May 2004 18:32:55 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA04992; Tue, 04 May 2004 18:33:06 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma004972; Tue, 04 May 2004 18:32:39 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id JAA03920 for linac-eng-list; Tue, 04 May 2004 09:37:06 -0500 (CDT) Received: from PHSEXCHICO2.Partners.org (phsexchico2.partners.org [170.223.254.20]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id JAA03916 for ; Tue, 04 May 2004 09:37:04 -0500 (CDT) Received: by phsexchico2.partners.org with Internet Mail Service (5.5.2657.72) id ; Tue, 04 May 2004 10:32:39 -0400 Date: Tue, 04 May 2004 10:32:39 -0400 From: "Maddox, Buford J" Subject: RE: Carrousel noise errors. Sender: owner-linac-eng@plato.aristotle.net To: "'Caunt, Peter'" , "Linac Eng (E-mail)" Message-id: <36298D09ED1AD311B4DC0008C7F4D4E111466422@phsexch6.partners.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 04 May 2004 10:32:39 -0400 From: "Maddox, Buford J" Subject: RE: Carrousel noise errors. Sender: owner-linac-eng@plato.aristotle.net To: "'Caunt, Peter'" , "Linac Eng (E-mail)" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f One more cause of intermittent problems that may show up similar to a noisy pot is a sticky carrousel bearing. With the chain loose it should rotate freely. We had one that would stop in the wrong place sometime, pin couldn't seat completely. finally, it began to stop in other places, not at the hole, as it got worse. Mineral spirits followed by superlube fixed it. Jerry -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Caunt, Peter Sent: Tuesday, May 04, 2004 12:06 AM To: Linac Eng (E-mail) Subject: RE:Carrousel noise errors. Listservmembers, A collective thanks to all those who responded with information and suggestions on this problem, I now have some additional areas to investigate. In response to the information, the status thus far : (1) I see both carr and foil interlocks. (2) Not a individual board problem-changed with spare and same problem. (3) Carrousel pot position varied and then changed (pin in at +5volts), monitored voltage at Bmag board during gantry rotation - all stable. (4) Pin is correctly seating, voltage observed as above. (5) All data lines pulling up to correct voltage, waveforms look fine. (6) Power supply voltages appear stable (though not observed at fault) (7) Have had allen keys grafted onto fingers to assist in lead shielding removal The STB recommendation is an interesting piece of information. Anyway, thanks again. Regards, Peter Caunt. Canberra, Australia. "Important: This transmission is intended only for the use of the addressee and may contain confidential or legally privileged information. If you are not the intended recipient, you are notified that any use or dissemination of this communication is strictly prohibited. If you receive this transmission in error please notify the author immediately and delete all copies of this transmission." ---------------------------------------------------------------------------- ------------------------------------------ This email, and any attachments, may be confidential and also privileged. If you are not the intended recipient: Please notify the sender and delete all copies of this transmission along with any attachments immediately. You should not copy or use it for any purpose, nor disclose its contents to any other person. ---------------------------------------------------------------------------- ------------------------------------------  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HX70008AH30ZX@hubbard.azu.nl>; Tue, 4 May 2004 22:04:18 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050422041514983 ; Tue, 04 May 2004 22:04:15 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id WAA29096; Tue, 04 May 2004 22:04:26 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma029064; Tue, 04 May 2004 22:04:21 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id NAA07115 for linac-eng-list; Tue, 04 May 2004 13:02:28 -0500 (CDT) Received: from eprism2.cancerboard.ab.ca (cancerserver.cancerboard.ab.ca [164.102.1.2]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id NAA07111 for ; Tue, 04 May 2004 13:02:27 -0500 (CDT) Date: Tue, 04 May 2004 12:04:21 -0600 From: Kurt Knibutat Subject: Re: Carrousel noise errors Sender: owner-linac-eng@plato.aristotle.net To: "Caunt, Peter" Cc: "Linac Eng (E-mail)" Message-id: <4097DB25.31DF29DD@cancerboard.ab.ca> Organization: Tom Baker Cancer Centre MIME-version: 1.0 X-Mailer: Mozilla 4.79 [en] (Win98; U) Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 7bit Precedence: bulk X-Accept-Language: en References: <2FC7DBCD6D6AD611AD7B0090278CABAEE79E7D@CAL030> X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 04 May 2004 12:04:21 -0600 From: Kurt Knibutat Subject: Re: Carrousel noise errors Sender: owner-linac-eng@plato.aristotle.net To: "Caunt, Peter" Cc: "Linac Eng (E-mail)" Organization: Tom Baker Cancer Centre X-Accept-Language: en X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f We had this error on CL21EX 1291. We found one of the terminal forks on the carrousel switches touching the steel frame. We assumed it caused a ground loop as it was the logic ground signal. -- Kurt Knibutat Sr Technical Equipment Officer Tom Baker Cancer Centre (403) 944-1089 This e-mail and any attachments may contain confidential and privileged information. If you are not the intended recipient, please notify the sender immediately by return e-mail, delete this e-mail and destroy any copies. Any dissemination or use of this information by a person other than the intended recipient is unauthorized and may be illegal.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HX70072CMWG87@hubbard.azu.nl>; Wed, 5 May 2004 00:09:53 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050500095117433 ; Wed, 05 May 2004 00:09:51 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id AAA11345; Wed, 05 May 2004 00:10:02 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma011311; Wed, 05 May 2004 00:09:38 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id OAA09025 for linac-eng-list; Tue, 04 May 2004 14:54:43 -0500 (CDT) Received: from phsornt424.or.providence.org (phsor-nat2.providence.org [170.220.2.14]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id OAA09021 for ; Tue, 04 May 2004 14:54:41 -0500 (CDT) Received: from PickupDirectory by phsornt424.or.providence.org with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2653.13) id JL6GDH76; Tue, 04 May 2004 12:54:36 -0700 Received: from phsorcon06.or.providence.org ([170.220.78.187]) by phsornt424.or.providence.org with Microsoft SMTPSVC(5.0.2195.2966); Tue, 04 May 2004 12:54:35 -0700 Received: from phsormsg02.or.providence.org ([170.220.75.191]) by phsorcon06.or.providence.org with Microsoft SMTPSVC(5.0.2195.6713); Tue, 04 May 2004 12:52:32 -0700 Date: Tue, 04 May 2004 12:52:31 -0700 From: JamesR.Wilson@providence.org Subject: RE: Carrousel noise errors Sender: owner-linac-eng@plato.aristotle.net To: hall.david@lycos.com, linac-eng@plato.aristotle.net Message-id: <0838AEB7ABB0C04481781A84D6DE7C6C0112333A@phsormsg02.or.providence.org> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 8bit Importance: normal Precedence: bulk X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 Content-Class: urn:content-classes:message Thread-Topic: Carrousel noise errors thread-index: AcQxXPUAcwxeNnQ1QlCYqOOjloX7fwAtAETg X-OriginalArrivalTime: 04 May 2004 19:52:32.0499 (UTC) FILETIME=[56C7E430:01C43211] X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id OAA09022 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 04 May 2004 12:52:31 -0700 From: JamesR.Wilson@providence.org Subject: RE: Carrousel noise errors Sender: owner-linac-eng@plato.aristotle.net To: hall.david@lycos.com, linac-eng@plato.aristotle.net Importance: normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 Content-Class: urn:content-classes:message Thread-Topic: Carrousel noise errors thread-index: AcQxXPUAcwxeNnQ1QlCYqOOjloX7fwAtAETg X-OriginalArrivalTime: 04 May 2004 19:52:32.0499 (UTC) FILETIME=[56C7E430:01C43211] X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id OAA09022 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Dave, I looked back several years in Varian's website and I didn't find anything. Do you or does anyone else out there have the specifics for this mod?? Thanks, Jim -----Original Message----- From: david hall [mailto:hall.david@lycos.com] Sent: Monday, May 03, 2004 3:22 PM To: Peter.Caunt@act.gov.au; linac-eng@plato.aristotle.net; Wilson, Jim Subject: RE: Carrousel noise errors Varian adds a cap to the co mode pcb. It was a tech tip at one time, they may have generated a CTB. Dave Hall -- --------- Original Message --------- DATE: Mon, 3 May 2004 10:20:40 From: JamesR.Wilson@providence.org To: , Cc: >Peter, does this give you both carr/foil interlocks, or one or the >other?? Thanks, > >Jim Wilson >Clinical Engineering >Providence Health System >Portland Or. > >-----Original Message----- >From: owner-linac-eng@plato.aristotle.net >[mailto:owner-linac-eng@plato.aristotle.net] On Behalf Of Caunt, Peter >Sent: Sunday, May 02, 2004 11:07 PM >To: Linac Eng (E-mail) >Subject: Carrousel noise errors > >Listmembers, > I am seeking assistance on an intermittent >problem that causes carrousel failures on a two-year-old C3 2100CD, one >of >those problems not wished upon anyone. > >Error occurs in the afternoon at around the same time but on occasional >days. > >Error code 99 - noise problems > >Carrousel lubricated and in good condition. >BCD switches changed and adjusted, fault still exists. >Not the Carrousel/Bmag board. >Port lock pin homes and operates satisfactorily-air pressure, solenoid >OK. > >Wondering if anyone has chased this down before, any expertise on this >problem greatly appreciated. > >Many thanks for the opportunity to raise the question. > >Regards, > >Peter Caunt >Radiotherapy Department >Canberra, Australia. > >"Important: This transmission is intended only for the use of the >addressee >and may contain confidential or legally privileged information. >If you are not the intended recipient, you are notified that any use or >dissemination of this communication is strictly prohibited. If you >receive >this transmission in error please notify the author immediately and >delete >all copies of this transmission." > > > >----------------------------------------------------------------------- - >---- >------------------------------------------ > This email, and any attachments, may be confidential and also >privileged. >If you are not the intended recipient: >Please notify the sender and delete all copies of this transmission >along >with any attachments immediately. >You should not copy or use it for any purpose, nor disclose its contents >to >any other person. >----------------------------------------------------------------------- - >---- >------------------------------------------ > > >DISCLAIMER: >This message is intended for the sole use of the addressee, and may contain information that is privileged, confidential and exempt from disclosure under applicable law. If you are not the addressee you are hereby notified that you may not use, copy, disclose, or distribute to anyone the message or any information contained in the message. If you have received this message in error, please immediately advise the sender by reply email and delete this message. > ____________________________________________________________ Find what you are looking for with the Lycos Yellow Pages http://r.lycos.com/r/yp_emailfooter/http://yellowpages.lycos.com/default .asp?SRC=lycos10 DISCLAIMER: This message is intended for the sole use of the addressee, and may contain information that is privileged, confidential and exempt from disclosure under applicable law. If you are not the addressee you are hereby notified that you may not use, copy, disclose, or distribute to anyone the message or any information contained in the message. If you have received this message in error, please immediately advise the sender by reply email and delete this message.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HX700GJBUYC5K@hubbard.azu.nl>; Wed, 5 May 2004 03:03:53 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050503034820601 ; Wed, 05 May 2004 03:03:48 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id DAA25670; Wed, 05 May 2004 03:04:00 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma025640; Wed, 05 May 2004 03:03:42 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id SAA14194 for linac-eng-list; Tue, 04 May 2004 18:00:10 -0500 (CDT) Received: from dalwhinnie.chhlth.govt.nz ([203.163.70.2]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id SAA14187 for ; Tue, 04 May 2004 18:00:08 -0500 (CDT) Received: from NTCHAVIMSS (ntchavimss.chhlth.govt.nz [159.117.27.250]) by dalwhinnie.chhlth.govt.nz (8.12.8/8.12.5) with ESMTP id i44N2MEN027357 for ; Wed, 05 May 2004 11:02:22 +1200 Received: from SMTPGATE.CHHLTH.GOVT.NZ ([159.117.20.14]) by NTCHAVIMSS with InterScan Messaging Security Suite; Wed, 05 May 2004 10:55:27 +1200 Received: from CHCH2-MTA by SMTPGATE.CHHLTH.GOVT.NZ with Novell_GroupWise; Wed, 05 May 2004 10:59:31 +1200 Date: Wed, 05 May 2004 10:59:11 +1200 From: Dave Pinchin Subject: Power up problems Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.0.4 Content-type: text/plain; charset=US-ASCII Content-disposition: inline Content-transfer-encoding: 8bit Precedence: bulk X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id SAA14191 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 05 May 2004 10:59:11 +1200 From: Dave Pinchin Subject: Power up problems Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Content-disposition: inline X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id SAA14191 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f G'day list, Had a real beaut this morning. Can anybody shed any light on this one....... Scenario. They are putting in a new substation for our bldg. Last night the power was off for 10 min. I restarted the machines after the powerdown, but did not go through the warm up cycle. Problem. This morning the machines (2100C/D #1164 , 2100C #40 & 600C #248) all running console s/w version 6 all exhibited identical faults. It was noted that the PC was turned off, this was turned on. The STD bus uP needed to be reset. (watchdog to the PC???) ! ! ! ! ! No movements were allowed. - This was traced to a COL interlock. The COL i/l was 'latched' and could not be cleared by ANY dkb presses. The solution was to slip out of morning check and into service mode. This automatically cleared the i/l and everything worked again ! ! ! ! Any thoughts. :\ Dave ********************************************************************** This email and attachments have been scanned for content and viruses and is believed to be clean This email or attachments may contain confidential or legally privileged information intended for the sole use of the addressee(s). Any use, redistribution, disclosure, or reproduction of this message, except as intended, is prohibited. If you received this email in error, please notify the sender and remove all copies of the message, including any attachments. Any views or opinions expressed in this email (unless otherwise stated) may not represent those of Canterbury District Health Board **********************************************************************  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HX700ILYXPIX5@hubbard.azu.nl>; Wed, 5 May 2004 04:03:24 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050504032021671 ; Wed, 05 May 2004 04:03:20 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id EAA00355; Wed, 05 May 2004 04:03:31 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma000334; Wed, 05 May 2004 04:03:05 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id TAA16895 for linac-eng-list; Tue, 04 May 2004 19:06:15 -0500 (CDT) Received: from phsornt422.or.providence.org (phsor-nat2.providence.org [170.220.2.14]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id TAA16891 for ; Tue, 04 May 2004 19:06:13 -0500 (CDT) Received: from PickupDirectory by phsornt422.or.providence.org with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2653.13) id 20W9V0AW; Tue, 04 May 2004 17:04:45 -0700 Received: from phsorcon06.or.providence.org ([170.220.78.187]) by phsornt422.or.providence.org with Microsoft SMTPSVC(5.0.2195.6713); Tue, 04 May 2004 17:04:45 -0700 Received: from phsormsg02.or.providence.org ([170.220.75.191]) by phsorcon06.or.providence.org with Microsoft SMTPSVC(5.0.2195.6713); Tue, 04 May 2004 17:04:38 -0700 Date: Tue, 04 May 2004 17:04:37 -0700 From: JamesR.Wilson@providence.org Subject: RE: Power up problems Sender: owner-linac-eng@plato.aristotle.net To: Dave.Pinchin@cdhb.govt.nz, linac-eng@plato.aristotle.net Message-id: <0838AEB7ABB0C04481781A84D6DE7C6C19F3D8@phsormsg02.or.providence.org> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 8bit Importance: normal Precedence: bulk X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 Content-Class: urn:content-classes:message Thread-Topic: Power up problems thread-index: AcQyM8m6KBo5rnw1RVKlDzC9OOudUgAACNlg X-OriginalArrivalTime: 05 May 2004 00:04:38.0572 (UTC) FILETIME=[8E9F76C0:01C43234] X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id TAA16892 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 04 May 2004 17:04:37 -0700 From: JamesR.Wilson@providence.org Subject: RE: Power up problems Sender: owner-linac-eng@plato.aristotle.net To: Dave.Pinchin@cdhb.govt.nz, linac-eng@plato.aristotle.net Importance: normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 Content-Class: urn:content-classes:message Thread-Topic: Power up problems thread-index: AcQyM8m6KBo5rnw1RVKlDzC9OOudUgAACNlg X-OriginalArrivalTime: 05 May 2004 00:04:38.0572 (UTC) FILETIME=[8E9F76C0:01C43234] X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id TAA16892 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Dave we have been experiencing the "COL" interlock problem for the last 2 years (that's how old our machines are). It is very infrequent and the techs know to go to physics of service mode and back out, to fix the problem. I don't know what the scenario is that initiates this problem. Anyone know anything else about this?? Thanks! Jim Wilson Providence Health System Portland, OR. -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net] On Behalf Of Dave Pinchin Sent: Tuesday, May 04, 2004 3:59 PM To: linac-eng@plato.aristotle.net Subject: Power up problems G'day list, Had a real beaut this morning. Can anybody shed any light on this one....... Scenario. They are putting in a new substation for our bldg. Last night the power was off for 10 min. I restarted the machines after the powerdown, but did not go through the warm up cycle. Problem. This morning the machines (2100C/D #1164 , 2100C #40 & 600C #248) all running console s/w version 6 all exhibited identical faults. It was noted that the PC was turned off, this was turned on. The STD bus uP needed to be reset. (watchdog to the PC???) ! ! ! ! ! No movements were allowed. - This was traced to a COL interlock. The COL i/l was 'latched' and could not be cleared by ANY dkb presses. The solution was to slip out of morning check and into service mode. This automatically cleared the i/l and everything worked again ! ! ! ! Any thoughts. :\ Dave ********************************************************************** This email and attachments have been scanned for content and viruses and is believed to be clean This email or attachments may contain confidential or legally privileged information intended for the sole use of the addressee(s). Any use, redistribution, disclosure, or reproduction of this message, except as intended, is prohibited. If you received this email in error, please notify the sender and remove all copies of the message, including any attachments. Any views or opinions expressed in this email (unless otherwise stated) may not represent those of Canterbury District Health Board ********************************************************************** DISCLAIMER: This message is intended for the sole use of the addressee, and may contain information that is privileged, confidential and exempt from disclosure under applicable law. If you are not the addressee you are hereby notified that you may not use, copy, disclose, or distribute to anyone the message or any information contained in the message. If you have received this message in error, please immediately advise the sender by reply email and delete this message.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HX8000Z22B6D8@hubbard.azu.nl>; Wed, 5 May 2004 05:42:55 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050505425323287 ; Wed, 05 May 2004 05:42:53 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id FAA07612; Wed, 05 May 2004 05:43:04 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma007594; Wed, 05 May 2004 05:42:53 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id VAA18885 for linac-eng-list; Tue, 04 May 2004 21:04:48 -0500 (CDT) Received: from hotmail.com (bay9-dav61.bay9.hotmail.com [64.4.46.196]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id VAA18881 for ; Tue, 04 May 2004 21:04:47 -0500 (CDT) Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Tue, 04 May 2004 19:04:16 -0700 Received: from 207.87.83.25 by bay9-dav61.bay9.hotmail.com with DAV; Wed, 05 May 2004 02:04:16 +0000 Date: Tue, 04 May 2004 22:07:05 -0400 From: "Jose R. Villegas" Subject: RE: Power up problems In-reply-to: <0838AEB7ABB0C04481781A84D6DE7C6C19F3D8@phsormsg02.or.providence.org> Sender: owner-linac-eng@plato.aristotle.net X-Sender: villegaj@hotmail.com To: JamesR.Wilson@providence.org, Dave.Pinchin@cdhb.govt.nz, linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Microsoft Office Outlook, Build 11.0.5510 Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 7bit Precedence: bulk X-Originating-IP: [207.87.83.25] X-Originating-Email: [villegaj@hotmail.com] X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 thread-index: AcQyM8m6KBo5rnw1RVKlDzC9OOudUgAACNlgAAQkP/A= X-OriginalArrivalTime: 05 May 2004 02:04:16.0916 (UTC) FILETIME=[453FD540:01C43245] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 04 May 2004 22:07:05 -0400 From: "Jose R. Villegas" Subject: RE: Power up problems In-reply-to: <0838AEB7ABB0C04481781A84D6DE7C6C19F3D8@phsormsg02.or.providence.org> Sender: owner-linac-eng@plato.aristotle.net X-Sender: villegaj@hotmail.com To: JamesR.Wilson@providence.org, Dave.Pinchin@cdhb.govt.nz, linac-eng@plato.aristotle.net X-Originating-IP: [207.87.83.25] X-Originating-Email: [villegaj@hotmail.com] X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 thread-index: AcQyM8m6KBo5rnw1RVKlDzC9OOudUgAACNlgAAQkP/A= X-OriginalArrivalTime: 05 May 2004 02:04:16.0916 (UTC) FILETIME=[453FD540:01C43245] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This problem is a bug in the VARIAN control program. However I couldn't find a CTB for this. I have talked to some Varian reps in SE and they confirm it. Jose Villegas. -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net] On Behalf Of JamesR.Wilson@providence.org Sent: Tuesday, May 04, 2004 8:05 PM To: Dave.Pinchin@cdhb.govt.nz; linac-eng@plato.aristotle.net Subject: RE: Power up problems Dave we have been experiencing the "COL" interlock problem for the last 2 years (that's how old our machines are). It is very infrequent and the techs know to go to physics of service mode and back out, to fix the problem. I don't know what the scenario is that initiates this problem. Anyone know anything else about this?? Thanks! Jim Wilson Providence Health System Portland, OR. -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net] On Behalf Of Dave Pinchin Sent: Tuesday, May 04, 2004 3:59 PM To: linac-eng@plato.aristotle.net Subject: Power up problems G'day list, Had a real beaut this morning. Can anybody shed any light on this one....... Scenario. They are putting in a new substation for our bldg. Last night the power was off for 10 min. I restarted the machines after the powerdown, but did not go through the warm up cycle. Problem. This morning the machines (2100C/D #1164 , 2100C #40 & 600C #248) all running console s/w version 6 all exhibited identical faults. It was noted that the PC was turned off, this was turned on. The STD bus uP needed to be reset. (watchdog to the PC???) ! ! ! ! ! No movements were allowed. - This was traced to a COL interlock. The COL i/l was 'latched' and could not be cleared by ANY dkb presses. The solution was to slip out of morning check and into service mode. This automatically cleared the i/l and everything worked again ! ! ! ! Any thoughts. :\ Dave ********************************************************************** This email and attachments have been scanned for content and viruses and is believed to be clean This email or attachments may contain confidential or legally privileged information intended for the sole use of the addressee(s). Any use, redistribution, disclosure, or reproduction of this message, except as intended, is prohibited. If you received this email in error, please notify the sender and remove all copies of the message, including any attachments. Any views or opinions expressed in this email (unless otherwise stated) may not represent those of Canterbury District Health Board ********************************************************************** DISCLAIMER: This message is intended for the sole use of the addressee, and may contain information that is privileged, confidential and exempt from disclosure under applicable law. If you are not the addressee you are hereby notified that you may not use, copy, disclose, or distribute to anyone the message or any information contained in the message. If you have received this message in error, please immediately advise the sender by reply email and delete this message.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HX80020V2U0ZK@hubbard.azu.nl>; Wed, 5 May 2004 05:54:04 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050505540223466 ; Wed, 05 May 2004 05:54:02 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id FAA08414; Wed, 05 May 2004 05:54:14 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma008387; Wed, 05 May 2004 05:54:01 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id UAA18800 for linac-eng-list; Tue, 04 May 2004 20:55:46 -0500 (CDT) Received: from hotmail.com (bay9-dav3.bay9.hotmail.com [64.4.46.107]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id UAA18796 for ; Tue, 04 May 2004 20:55:44 -0500 (CDT) Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Tue, 04 May 2004 18:55:14 -0700 Received: from 207.87.83.25 by bay9-dav3.bay9.hotmail.com with DAV; Wed, 05 May 2004 01:55:13 +0000 Date: Tue, 04 May 2004 21:58:23 -0400 From: "Jose R. Villegas" Subject: RE: Carrousel noise errors. In-reply-to: Sender: owner-linac-eng@plato.aristotle.net X-Sender: villegaj@hotmail.com To: "'Williams, Rod'" , "'Caunt, Peter'" , "'Linac Eng (E-mail)'" Message-id: MIME-version: 1.0 X-Mailer: Microsoft Office Outlook, Build 11.0.5510 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_DXbcDe+jXesSZRv4UI18pQ)" Precedence: bulk X-Originating-IP: [207.87.83.25] X-Originating-Email: [villegaj@hotmail.com] X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 thread-index: AcQyMlBKROtAJcDiS+mlLcXwhKH8VQAEfKOA X-OriginalArrivalTime: 05 May 2004 01:55:14.0016 (UTC) FILETIME=[01A7DE00:01C43244] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 04 May 2004 21:58:23 -0400 From: "Jose R. Villegas" Subject: RE: Carrousel noise errors. In-reply-to: Sender: owner-linac-eng@plato.aristotle.net X-Sender: villegaj@hotmail.com To: "'Williams, Rod'" , "'Caunt, Peter'" , "'Linac Eng (E-mail)'" X-Originating-IP: [207.87.83.25] X-Originating-Email: [villegaj@hotmail.com] X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 thread-index: AcQyMlBKROtAJcDiS+mlLcXwhKH8VQAEfKOA X-OriginalArrivalTime: 05 May 2004 01:55:14.0016 (UTC) FILETIME=[01A7DE00:01C43244] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This is a multi-part message in MIME format. --Boundary_(ID_DXbcDe+jXesSZRv4UI18pQ) Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 7bit Why did you change the manifold? Was there a leack? Jose Villegas _____ From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net] On Behalf Of Williams, Rod Sent: Tuesday, May 04, 2004 5:18 AM To: 'Caunt, Peter'; Linac Eng (E-mail) Subject: RE: Carrousel noise errors. Just to add to the list of problems found, I had a intermittent carr, foil with a 99 error, ended up replacing the air manifold assy. Problem GONE. This was on 2100EX S/N 1368. Listservmembers, A collective thanks to all those who responded with information and suggestions on this problem, I now have some additional areas to investigate. In response to the information, the status thus far : (1) I see both carr and foil interlocks. (2) Not a individual board problem-changed with spare and same problem. (3) Carrousel pot position varied and then changed (pin in at +5volts), monitored voltage at Bmag board during gantry rotation - all stable. (4) Pin is correctly seating, voltage observed as above. (5) All data lines pulling up to correct voltage, waveforms look fine. (6) Power supply voltages appear stable (though not observed at fault) (7) Have had allen keys grafted onto fingers to assist in lead shielding removal The STB recommendation is an interesting piece of information. Anyway, thanks again. Regards, Peter Caunt. Canberra, Australia. This information is confidential and intended solely for the use of the individual or entity to whom it is addressed. If you have received this email in error please notify the sender or our Customer Support Center at (262) 928-2777. We have scanned this email and its attachments for malicious content. However, the recipient should check this email and any attachments for the presence of viruses. ProHealth Care accepts no liability for any damage caused by any virus transmitted by this email. --Boundary_(ID_DXbcDe+jXesSZRv4UI18pQ) Content-type: text/html; charset=us-ascii Content-transfer-encoding: quoted-printable RE: Carrousel noise errors.

Why did you change the manifold? = Was there a leack?

 

Jose = Villegas

 

From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net] On Behalf Of Williams, Rod
Sent: Tuesday, May 04, = 2004 5:18 AM
To: 'Caunt, Peter'; Linac = Eng (E-mail)
Subject: RE: Carrousel = noise errors.

 

Just to add to the list of problems found, I had a intermittent carr, foil with = a 99 error, ended up replacing the air manifold assy. Problem GONE. This was = on 2100EX S/N 1368.





Listservmembers,
       &nbs= p;            = ;     A collective thanks to all those who responded with
information and = suggestions on this problem, I now have some additional
areas to = investigate.

In response to the information, the status thus far : =

(1)     I see both carr and foil interlocks.
(2)     Not a individual board problem-changed with spare and same = problem.
(3)     Carrousel pot position varied and then changed (pin in at = +5volts),
monitored voltage at = Bmag board during gantry rotation - all stable.
(4)     Pin is correctly seating, voltage observed as above.
(5)     All data lines pulling up to correct voltage, waveforms look = fine.
(6)     Power supply voltages appear stable (though not observed at = fault)
(7)     Have had allen keys grafted onto fingers to assist in lead = shielding
removal =

The STB recommendation is an interesting piece of information. =

Anyway, thanks again.

Regards,

 

Peter Caunt.
Canberra, Australia.
  =

 

This information is confidential and intended solely for the use of the = individual or entity to whom it is addressed.
If you have received = this email in error please notify the sender or our Customer Support Center at (262) = 928-2777.

We have scanned this email and its attachments for malicious = content.
However, the recipient = should check this email and any attachments for the presence of = viruses.
ProHealth Care accepts = no liability for any damage caused by any virus transmitted by this email. =

--Boundary_(ID_DXbcDe+jXesSZRv4UI18pQ)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HX8006WYNHSF8@hubbard.azu.nl>; Wed, 5 May 2004 13:20:27 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050513202303750 ; Wed, 05 May 2004 13:20:23 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id NAA11075; Wed, 05 May 2004 13:20:33 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma011031; Wed, 05 May 2004 13:20:13 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id EAA26159 for linac-eng-list; Wed, 05 May 2004 04:33:55 -0500 (CDT) Received: from intfw1.phci.org (user.phci.org [207.67.109.70]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id EAA26155 for ; Wed, 05 May 2004 04:33:53 -0500 (CDT) Received: from intfw1.phci.org (root@localhost) by intfw1.phci.org with ESMTP id i459XLeq011008 for ; Wed, 05 May 2004 04:33:21 -0500 (CDT) Received: from zixvpm00.phci.org (zixvpm02.phci.org [172.20.3.22]) by intfw1.phci.org with ESMTP id i459WuTo011005 for ; Wed, 05 May 2004 04:33:18 -0500 (CDT) Received: from zixvpm02.phci.org (ZixVPM [127.0.0.1]) by Outbound.phci.org (Proprietary) with ESMTP id A33641C0075 for ; Wed, 05 May 2004 04:32:51 -0500 (CDT) Received: from smtpscan.phci.org (smtpscan.phci.org [172.20.3.10]) by zixvpm00.phci.org (Proprietary) with SMTP id 9C9CF1A407F; Wed, 05 May 2004 04:32:48 -0500 (CDT) Received: from wmhmail1.phci.org ([IP=10.1.1.28]) by eSafe SMTP Relay 1083696418; Wed May 5 04:48:47 2004 Received: by wmhmail1.phci.org with Internet Mail Service (5.5.2657.72) id ; Wed, 05 May 2004 04:32:48 -0500 Date: Wed, 05 May 2004 04:32:47 -0500 From: "Williams, Rod" Subject: RE: Power up problems Sender: owner-linac-eng@plato.aristotle.net To: "'JamesR.Wilson@providence.org'" , Dave.Pinchin@cdhb.govt.nz, linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_0w6w6CX8kDiPMG15xlynrQ)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 05 May 2004 04:32:47 -0500 From: "Williams, Rod" Subject: RE: Power up problems Sender: owner-linac-eng@plato.aristotle.net To: "'JamesR.Wilson@providence.org'" , Dave.Pinchin@cdhb.govt.nz, linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_0w6w6CX8kDiPMG15xlynrQ) Content-type: text/plain; charset=iso-8859-1 Hi when you say slip into service mode or physics I assume you are in standby mode?? I have the techs resetting the console computer in the standby mode if the machine goes down to avoid the coll fault before they turn the linac on. I have the console computer on a UPS so they have to reset it whenever the machine goes down. -----Original Message----- From: JamesR.Wilson@providence.org [mailto:JamesR.Wilson@providence.org] Sent: Tuesday, May 04, 2004 7:05 PM To: Dave.Pinchin@cdhb.govt.nz; linac-eng@plato.aristotle.net Subject: RE: Power up problems Dave we have been experiencing the "COL" interlock problem for the last 2 years (that's how old our machines are). It is very infrequent and the techs know to go to physics of service mode and back out, to fix the problem. I don't know what the scenario is that initiates this problem. Anyone know anything else about this?? Thanks! Jim Wilson Providence Health System Portland, OR. The solution was to slip out of morning check and into service mode. This automatically cleared the i/l and everything worked again ! ! ! ! Any thoughts. :\ This information is confidential and intended solely for the use of the individual or entity to whom it is addressed. If you have received this email in error please notify the sender or our Customer Support Center at (262) 928-2777. We have scanned this email and its attachments for malicious content. However, the recipient should check this email and any attachments for the presence of viruses. ProHealth Care accepts no liability for any damage caused by any virus transmitted by this email. --Boundary_(ID_0w6w6CX8kDiPMG15xlynrQ) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: quoted-printable RE: Power up problems

Hi when you say slip into service mode or physics I ass= ume you are in standby mode?? I have the techs resetting the console comp= uter in the standby mode if the machine goes down to avoid the coll fault= before they turn the linac on. I have the console computer on a UPS so t= hey have to reset it whenever the machine goes down.

-----Original Message-----
From: JamesR.Wilson@providence.org [mailto:JamesR.Wilson@providence.org]
Sent: Tuesday, May 04, 2004 7:05 PM
To: Dave.Pinchin@cdhb.govt.nz; linac-eng@plato.aristot= le.net
Subject: RE: Power up problems


Dave we have been experiencing the "COL" inte= rlock problem for the last
2 years (that's how old our machines are). It is very = infrequent and the
techs know to go to physics of service mode and back o= ut, to fix the
problem. I don't know what the scenario is that initia= tes this problem.
Anyone know anything else about this?? Thanks!

Jim Wilson
Providence Health System
Portland, OR.

The solution was to slip out of morning check and into = service mode.
This automatically cleared the i/l and everything work= ed again ! ! ! !

Any thoughts.
:\


This information is confidential and intended solely fo= r the use of the individual or entity to whom it is addressed.
If you have received this email in error please notify= the sender or our Customer Support Center at (262) 928-2777.

We have scanned this email and its attachments for mali= cious content.
However, the recipient should check this email and any= attachments for the presence of viruses.
ProHealth Care accepts no liability for any damage cau= sed by any virus transmitted by this email.

--Boundary_(ID_0w6w6CX8kDiPMG15xlynrQ)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HX8006YQNJVF8@hubbard.azu.nl>; Wed, 5 May 2004 13:21:33 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050513213103770 ; Wed, 05 May 2004 13:21:31 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id NAA11188; Wed, 05 May 2004 13:21:42 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma011029; Wed, 05 May 2004 13:21:05 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id EAA26054 for linac-eng-list; Wed, 05 May 2004 04:15:38 -0500 (CDT) Received: from intfw2.phci.org (user.phci.org [207.67.109.70]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id EAA26050 for ; Wed, 05 May 2004 04:15:37 -0500 (CDT) Received: from intfw2.phci.org (root@localhost) by intfw2.phci.org with ESMTP id i459F6qU003810 for ; Wed, 05 May 2004 04:15:06 -0500 (CDT) Received: from zixvpm00.phci.org (zixvpm02.phci.org [172.20.3.22]) by intfw2.phci.org with ESMTP id i459F67N003807 for ; Wed, 05 May 2004 04:15:06 -0500 (CDT) Received: from zixvpm02.phci.org (ZixVPM [127.0.0.1]) by Outbound.phci.org (Proprietary) with ESMTP id 869911C0072 for ; Wed, 05 May 2004 04:15:06 -0500 (CDT) Received: from smtpscan.phci.org (smtpscan.phci.org [172.20.3.10]) by zixvpm00.phci.org (Proprietary) with SMTP id C3B1B1A407F; Wed, 05 May 2004 04:15:03 -0500 (CDT) Received: from wmhmail1.phci.org ([IP=10.1.1.28]) by eSafe SMTP Relay 1083696418; Wed May 5 04:31:02 2004 Received: by wmhmail1.phci.org with Internet Mail Service (5.5.2657.72) id ; Wed, 05 May 2004 04:15:03 -0500 Date: Wed, 05 May 2004 04:15:02 -0500 From: "Williams, Rod" Subject: RE: Carrousel noise errors. Sender: owner-linac-eng@plato.aristotle.net To: "'Jose R. Villegas'" , "Williams, Rod" , "'Caunt, Peter'" , "'Linac Eng (E-mail)'" Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_IrgFTAa6eHbxEcwD9ge8/A)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 05 May 2004 04:15:02 -0500 From: "Williams, Rod" Subject: RE: Carrousel noise errors. Sender: owner-linac-eng@plato.aristotle.net To: "'Jose R. Villegas'" , "Williams, Rod" , "'Caunt, Peter'" , "'Linac Eng (E-mail)'" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_IrgFTAa6eHbxEcwD9ge8/A) Content-type: text/plain; charset=iso-8859-1 No leaks just intermittent carr, foil faults, the pin was not dropping in every time. -----Original Message----- From: Jose R. Villegas [mailto:villegaj@hotmail.com] Sent: Tuesday, May 04, 2004 8:58 PM To: 'Williams, Rod'; 'Caunt, Peter'; 'Linac Eng (E-mail)' Subject: RE: Carrousel noise errors. Why did you change the manifold? Was there a leack? Jose Villegas _____ From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net] On Behalf Of Williams, Rod Sent: Tuesday, May 04, 2004 5:18 AM To: 'Caunt, Peter'; Linac Eng (E-mail) Subject: RE: Carrousel noise errors. Just to add to the list of problems found, I had a intermittent carr, foil with a 99 error, ended up replacing the air manifold assy. Problem GONE. This was on 2100EX S/N 1368. Listservmembers, A collective thanks to all those who responded with information and suggestions on this problem, I now have some additional areas to investigate. In response to the information, the status thus far : (1) I see both carr and foil interlocks. (2) Not a individual board problem-changed with spare and same problem. (3) Carrousel pot position varied and then changed (pin in at +5volts), monitored voltage at Bmag board during gantry rotation - all stable. (4) Pin is correctly seating, voltage observed as above. (5) All data lines pulling up to correct voltage, waveforms look fine. (6) Power supply voltages appear stable (though not observed at fault) (7) Have had allen keys grafted onto fingers to assist in lead shielding removal The STB recommendation is an interesting piece of information. Anyway, thanks again. Regards, Peter Caunt. Canberra, Australia. This information is confidential and intended solely for the use of the individual or entity to whom it is addressed. If you have received this email in error please notify the sender or our Customer Support Center at (262) 928-2777. We have scanned this email and its attachments for malicious content. However, the recipient should check this email and any attachments for the presence of viruses. ProHealth Care accepts no liability for any damage caused by any virus transmitted by this email. This information is confidential and intended solely for the use of the individual or entity to whom it is addressed. If you have received this email in error please notify the sender or our Customer Support Center at (262) 928-2777. We have scanned this email and its attachments for malicious content. However, the recipient should check this email and any attachments for the presence of viruses. ProHealth Care accepts no liability for any damage caused by any virus transmitted by this email. --Boundary_(ID_IrgFTAa6eHbxEcwD9ge8/A) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: quoted-printable RE: Carrousel noise errors.
No=20 leaks  just intermittent carr, foil faults, the pin was not dropping= =20 in every time.
-----Original Message-----
From:=20 owner-linac-eng@plato.aristotle.net=20 [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Kyle,=20 John
Sent: Friday, April 30, 2004 9:47 AM
To: = Lockhart,=20 Ryan; clinac listserve
Subject: RE: = IMRT

We=20 are just about in the same boat with you. I have heard that with IMRT = leaf=20 motors fail more frequently. We have not replaced a single motor yet.=20
-----Original Message-----
From: = Lockhart, Ryan=20 [mailto:LockhartR@covhealth.com]
Sent: Friday, April 30, = 2004=20 6:52 AM
To: 'clinac listserve'
Subject:=20 IMRT

We have a 21EX and a 2100C both with = Millennium=20 MLC's that are just over a year old.  Our physicist is in the = process=20 of implementing IMRT.  Has anybody out there had any noticeable = increases in breakdowns or required service due to IMRT?  Also, = are=20 there any additional PM requirements or recommendations you would = make to=20 make them run as smoothly with IMRT?

Thanks

Ryan Lockhart
Covenant Medical Center
Waterloo,=20 Iowa

-----Original Message-----
From: Jose R. Villegas=20 [mailto:villegaj@hotmail.com]
Sent: Tuesday, May 04, 2004 8:5= 8=20 PM
To: 'Williams, Rod'; 'Caunt, Peter'; 'Linac Eng=20 (E-mail)'
Subject: RE: Carrousel noise errors.

=

Why did you = change=20 the manifold? Was there a leack?

 <= /o:p>

Jose=20 Villegas

 <= /o:p>

From:= =20 owner-linac-eng@plato.aristotle.net=20 [mailto:owner-linac-eng@plato.aristotle.net] On Behalf Of Williams, Rod
Sent: Tuesday, May 04, 2004 5:18= =20 AM
To: 'Caunt, Peter= '; Linac=20 Eng (E-mail)
Subject: RE:=20 Carrousel noise errors.

 

Just to=20 add to the list of problems found, I had a intermittent carr, foil with= a 99=20 error, ended up replacing the air manifold assy. Problem GONE. This was= on=20 2100EX S/N 1368.





Listservmembers,
       &nb= sp;           &nbs= p;    =20 A collective thanks to all those who responded with
<= FONT=20 size=3D2>information and suggestions on= this=20 problem, I now have some additional
areas to investigate.

In=20 response to the information, the status thus far :=20

(1)     I see both carr a= nd foil=20 interlocks.
(2)     Not a individual = board=20 problem-changed with spare and same problem.
(3)     Ca= rrousel pot=20 position varied and then changed (pin in at +5volts), monitored voltage at Bmag boar= d during=20 gantry rotation - all stable.
(4)     Pin is correctly = seating,=20 voltage observed as above.
(5)     All data lines pu= lling up=20 to correct voltage, waveforms look fine.
(6)     Power supply volt= ages=20 appear stable (though not observed at fault)
(7)     Ha= ve had=20 allen keys grafted onto fingers to assist in lead shielding=20
removal=20

The STB=20 recommendation is an interesting piece of information.=20

Anyway,=20 thanks again.

Regards,

 

Peter=20 Caunt.
<= FONT=20 size=3D2>Canberra, Australia.
 

 

This=20 information is confidential and intended solely for the use of the indi= vidual=20 or entity to whom it is addressed.
If you have received this email in error plea= se notify=20 the sender or our Customer Support Center at (262) 928-2777.=20

We have=20 scanned this email and its attachments for malicious content.=20
However, the recipie= nt should=20 check this email and any attachments for the presence of=20 viruses.
ProHealth Care accepts no liability for any d= amage=20 caused by any virus transmitted by this email.=20



This information is confidential and int= ended solely for the use of the individual or entity to whom it is addres= sed.

If you have received this email in error= please notify the sender or our Customer Support Center at (262) 928-277= 7.


We have scanned this email and its attac= hments for malicious content.

However, the recipient should check this= email and any attachments for the presence of viruses.

ProHealth Care accepts no liability for = any damage caused by any virus transmitted by this email.


--Boundary_(ID_IrgFTAa6eHbxEcwD9ge8/A)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HX800D7YRAO0Z@hubbard.azu.nl>; Wed, 5 May 2004 14:42:32 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050514422906348 ; Wed, 05 May 2004 14:42:29 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id OAA25065; Wed, 05 May 2004 14:42:40 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma024990; Wed, 05 May 2004 14:42:03 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id FAA27390 for linac-eng-list; Wed, 05 May 2004 05:58:34 -0500 (CDT) Received: from PHSXCHICI4.partners.org (phsxchici4.mgh.harvard.edu [132.183.130.39]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id FAA27386 for ; Wed, 05 May 2004 05:58:33 -0500 (CDT) Received: by phsxchici4.mgh.harvard.edu with Internet Mail Service (5.5.2657.72) id ; Wed, 05 May 2004 06:57:29 -0400 Date: Wed, 05 May 2004 06:56:54 -0400 From: "Maddox, Buford J" Subject: RE: Power up problems Sender: owner-linac-eng@plato.aristotle.net To: "'JamesR.Wilson@providence.org'" , Dave.Pinchin@cdhb.govt.nz, linac-eng@plato.aristotle.net Message-id: <36298D09ED1AD311B4DC0008C7F4D4E111466426@phsexch6.partners.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=ISO-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 05 May 2004 06:56:54 -0400 From: "Maddox, Buford J" Subject: RE: Power up problems Sender: owner-linac-eng@plato.aristotle.net To: "'JamesR.Wilson@providence.org'" , Dave.Pinchin@cdhb.govt.nz, linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f We have seen a coll interlock that originates in the MLC, as far as we have been able to determine. Rotating the collimator clears it up. It shows up as an MLC ILK and coll fault on IMPAC verification system. Not the problem mentioned, but similar. The trick of going to Physics mode and back, without even entering the password, works on many phantom problems. Apparently something in STD bus gets reinitialized. Sometimes changing modes, like xray to electrons and back, will clear up phantoms, besides the usual carrousel ones. The IMPAC users' list recently said that redoing setup, then hitting continue, was the cure for communications problems that result from going to service mode with IMPAC active. This is much better than what we were doing, resetting the std bus! These little tips are perfect for this list. What's yours? Jerry -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of JamesR.Wilson@providence.org Sent: Tuesday, May 04, 2004 8:05 PM To: Dave.Pinchin@cdhb.govt.nz; linac-eng@plato.aristotle.net Subject: RE: Power up problems Dave we have been experiencing the "COL" interlock problem for the last 2 years (that's how old our machines are). It is very infrequent and the techs know to go to physics of service mode and back out, to fix the problem. I don't know what the scenario is that initiates this problem. Anyone know anything else about this?? Thanks! Jim Wilson Providence Health System Portland, OR. -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net] On Behalf Of Dave Pinchin Sent: Tuesday, May 04, 2004 3:59 PM To: linac-eng@plato.aristotle.net Subject: Power up problems G'day list, Had a real beaut this morning. Can anybody shed any light on this one....... Scenario. They are putting in a new substation for our bldg. Last night the power was off for 10 min. I restarted the machines after the powerdown, but did not go through the warm up cycle. Problem. This morning the machines (2100C/D #1164 , 2100C #40 & 600C #248) all running console s/w version 6 all exhibited identical faults. It was noted that the PC was turned off, this was turned on. The STD bus uP needed to be reset. (watchdog to the PC???) ! ! ! ! ! No movements were allowed. - This was traced to a COL interlock. The COL i/l was 'latched' and could not be cleared by ANY dkb presses. The solution was to slip out of morning check and into service mode. This automatically cleared the i/l and everything worked again ! ! ! ! Any thoughts. :\ Dave ********************************************************************** This email and attachments have been scanned for content and viruses and is believed to be clean This email or attachments may contain confidential or legally privileged information intended for the sole use of the addressee(s). Any use, redistribution, disclosure, or reproduction of this message, except as intended, is prohibited. If you received this email in error, please notify the sender and remove all copies of the message, including any attachments. Any views or opinions expressed in this email (unless otherwise stated) may not represent those of Canterbury District Health Board ********************************************************************** DISCLAIMER: This message is intended for the sole use of the addressee, and may contain information that is privileged, confidential and exempt from disclosure under applicable law. If you are not the addressee you are hereby notified that you may not use, copy, disclose, or distribute to anyone the message or any information contained in the message. If you have received this message in error, please immediately advise the sender by reply email and delete this message.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HX800DP2RZ50Z@hubbard.azu.nl>; Wed, 5 May 2004 14:57:51 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050514574906870 ; Wed, 05 May 2004 14:57:49 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id OAA27751; Wed, 05 May 2004 14:58:00 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma027717; Wed, 05 May 2004 14:57:32 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id GAA27908 for linac-eng-list; Wed, 05 May 2004 06:13:18 -0500 (CDT) Received: from PHSEXCHICO.MGH.HARVARD.EDU (phsexchico.mgh.harvard.edu [132.183.126.50]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id GAA27904 for ; Wed, 05 May 2004 06:13:16 -0500 (CDT) Received: by phsexchico.mgh.harvard.edu with Internet Mail Service (5.5.2657.72) id ; Wed, 05 May 2004 07:11:27 -0400 Date: Wed, 05 May 2004 07:11:20 -0400 From: "Maddox, Buford J" Subject: RE: Power up problems Sender: owner-linac-eng@plato.aristotle.net To: "'Williams, Rod'" , "'JamesR.Wilson@providence.org'" , Dave.Pinchin@cdhb.govt.nz, linac-eng@plato.aristotle.net Message-id: <36298D09ED1AD311B4DC0008C7F4D4E111466427@phsexch6.partners.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_WdXTr6GhDK3cYLukR2xw7A)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 05 May 2004 07:11:20 -0400 From: "Maddox, Buford J" Subject: RE: Power up problems Sender: owner-linac-eng@plato.aristotle.net To: "'Williams, Rod'" , "'JamesR.Wilson@providence.org'" , Dave.Pinchin@cdhb.govt.nz, linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_WdXTr6GhDK3cYLukR2xw7A) Content-type: text/plain; charset=iso-8859-1 You don't need to go to standby for the Physics/service mode trick to work. I think what is important is that it initializes the config when you exit the mode and enter the next mode. You do need to be in standby for the CTRL-ALT-DEL linac pc reboot from service keyboard to work. It reboots main pc as well as running selftest. But sometimes this doesn't work, have to reset std bus. If we are not here, we just have them do emergency off in stdby and bring it back up-drastic, but resets everything. And your monthly emergency off check is done! Nasty worm hitting computers today. Gives message something like---system authorized shutdown----leaves junk on the computer. Wish we had an isolated network, can't get one so far. What are people doing to keep their MLCs, Portal Visions, verifiers, etc. safe? Jerry -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Williams, Rod Sent: Wednesday, May 05, 2004 5:33 AM To: 'JamesR.Wilson@providence.org'; Dave.Pinchin@cdhb.govt.nz; linac-eng@plato.aristotle.net Subject: RE: Power up problems Hi when you say slip into service mode or physics I assume you are in standby mode?? I have the techs resetting the console computer in the standby mode if the machine goes down to avoid the coll fault before they turn the linac on. I have the console computer on a UPS so they have to reset it whenever the machine goes down. -----Original Message----- From: JamesR.Wilson@providence.org [ mailto:JamesR.Wilson@providence.org ] Sent: Tuesday, May 04, 2004 7:05 PM To: Dave.Pinchin@cdhb.govt.nz; linac-eng@plato.aristotle.net Subject: RE: Power up problems Dave we have been experiencing the "COL" interlock problem for the last 2 years (that's how old our machines are). It is very infrequent and the techs know to go to physics of service mode and back out, to fix the problem. I don't know what the scenario is that initiates this problem. Anyone know anything else about this?? Thanks! Jim Wilson Providence Health System Portland, OR. The solution was to slip out of morning check and into service mode. This automatically cleared the i/l and everything worked again ! ! ! ! Any thoughts. :\ This information is confidential and intended solely for the use of the individual or entity to whom it is addressed. If you have received this email in error please notify the sender or our Customer Support Center at (262) 928-2777. We have scanned this email and its attachments for malicious content. However, the recipient should check this email and any attachments for the presence of viruses. ProHealth Care accepts no liability for any damage caused by any virus transmitted by this email. --Boundary_(ID_WdXTr6GhDK3cYLukR2xw7A) Content-type: text/html; charset=iso-8859-1 RE: Power up problems
You don't need to go to standby for the Physics/service mode trick to work.  I think what is important is that it initializes the config when you exit the mode and enter the next mode. 
 
You do need to be in standby for the CTRL-ALT-DEL linac pc reboot from service keyboard to work.  It reboots main pc as well as running selftest.  But sometimes this doesn't work, have to reset std bus.  If we are not here, we just have them do emergency off in stdby and bring it back up-drastic, but resets everything.  And your monthly emergency off check is done! 
 
Nasty worm hitting computers today.  Gives message something like---system authorized shutdown----leaves junk on the computer.  Wish we had an isolated network, can't get one so far.  What are people doing to keep their MLCs, Portal Visions, verifiers, etc. safe?
 
Jerry
 
 -----Original Message-----
From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Williams, Rod
Sent: Wednesday, May 05, 2004 5:33 AM
To: 'JamesR.Wilson@providence.org'; Dave.Pinchin@cdhb.govt.nz; linac-eng@plato.aristotle.net
Subject: RE: Power up problems

Hi when you say slip into service mode or physics I assume you are in standby mode?? I have the techs resetting the console computer in the standby mode if the machine goes down to avoid the coll fault before they turn the linac on. I have the console computer on a UPS so they have to reset it whenever the machine goes down.

-----Original Message-----
From: JamesR.Wilson@providence.org [mailto:JamesR.Wilson@providence.org]
Sent: Tuesday, May 04, 2004 7:05 PM
To: Dave.Pinchin@cdhb.govt.nz; linac-eng@plato.aristotle.net
Subject: RE: Power up problems


Dave we have been experiencing the "COL" interlock problem for the last
2 years (that's how old our machines are). It is very infrequent and the
techs know to go to physics of service mode and back out, to fix the
problem. I don't know what the scenario is that initiates this problem.
Anyone know anything else about this?? Thanks!

Jim Wilson
Providence Health System
Portland, OR.

The solution was to slip out of morning check and into service mode.
This automatically cleared the i/l and everything worked again ! ! ! !

Any thoughts.
:\


This information is confidential and intended solely for the use of the individual or entity to whom it is addressed.
If you have received this email in error please notify the sender or our Customer Support Center at (262) 928-2777.

We have scanned this email and its attachments for malicious content.
However, the recipient should check this email and any attachments for the presence of viruses.
ProHealth Care accepts no liability for any damage caused by any virus transmitted by this email.

--Boundary_(ID_WdXTr6GhDK3cYLukR2xw7A)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HX800JHQVW756@hubbard.azu.nl>; Wed, 5 May 2004 16:21:52 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050516214309621 ; Wed, 05 May 2004 16:21:43 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id QAA12127; Wed, 05 May 2004 16:21:55 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma012033; Wed, 05 May 2004 16:21:22 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id HAA29298 for linac-eng-list; Wed, 05 May 2004 07:31:48 -0500 (CDT) Received: from PHSEXCHICI2.Partners.org (phsexchici2.partners.org [170.223.254.21]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id HAA29294 for ; Wed, 05 May 2004 07:31:46 -0500 (CDT) Received: by phsexchici2.partners.org with Internet Mail Service (5.5.2657.72) id ; Wed, 05 May 2004 08:31:07 -0400 Date: Wed, 05 May 2004 08:31:06 -0400 From: "Maddox, Buford J" Subject: pacemakers Sender: owner-linac-eng@plato.aristotle.net To: "'LINAC-ENG@PLATO.ARISTOTLE.net'" Message-id: <36298D09ED1AD311B4DC0008C7F4D4E111466429@phsexch6.partners.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 05 May 2004 08:31:06 -0400 From: "Maddox, Buford J" Subject: pacemakers Sender: owner-linac-eng@plato.aristotle.net To: "'LINAC-ENG@PLATO.ARISTOTLE.net'" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f We are looking for information regarding Linac effects on pacemakers, including ones with built in defibrillators. Has anyone heard of any effects from Linacs, either electrical or radiation effects, which caused a pacemaker/defibrillator to change its operation in any way? Don't want specifics, names, don't want to cause any manufacturers or their lawyers to get anxious about liability. Am not involved in any litigation. Just want to hear of experiences, what is being done to minimize effects, any testing done, etc. from the point of view of keeping our patients safe. Jerry  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HX800J8YXRYTP@hubbard.azu.nl>; Wed, 5 May 2004 17:02:38 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050517023310751 ; Wed, 05 May 2004 17:02:33 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id RAA18125; Wed, 05 May 2004 17:02:45 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma018024; Wed, 05 May 2004 17:02:19 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id IAA29747 for linac-eng-list; Wed, 05 May 2004 08:02:17 -0500 (CDT) Received: from mail2.tenethealth.com (mail2.tenethealth.com [199.222.14.8]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id IAA29743 for ; Wed, 05 May 2004 08:02:15 -0500 (CDT) Received: from tenhdcthvscan01.tenethealth.net ([172.18.167.160]) by mail2.tenethealth.com (8.11.6/8.11.6) with SMTP id i45D1iR19410; Wed, 05 May 2004 08:01:44 -0500 Received: from nodnsquery(172.18.167.214) by tenhdcthvscan01.tenethealth.net via csmap id 5c0f1c20_9e94_11d8_911b_0002b3d786fe_6747; Wed, 05 May 2004 08:01:44 -0500 (CDT) Received: from tenbmcthemx01.tenethealth.net ([10.30.2.48]) by tenhdcthemx53.tenethealth.net with Microsoft SMTPSVC(5.0.2195.6713); Wed, 05 May 2004 08:01:27 -0500 Date: Wed, 05 May 2004 08:01:27 -0500 From: "Kyle, John" Subject: RE: Power up problems Sender: owner-linac-eng@plato.aristotle.net To: "Williams, Rod" , JamesR.Wilson@providence.org, Dave.Pinchin@cdhb.govt.nz, linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_DOINz+R7iM/utG8IQYjEEQ)" Precedence: bulk X-MimeOLE: Produced By Microsoft Exchange V6.0.6249.0 content-class: urn:content-classes:message Thread-Topic: Power up problems Thread-Index: AcQynq33xeU4cAqiTgWRkFdS+yaIIwAAY/mg X-OriginalArrivalTime: 05 May 2004 13:01:27.0963 (UTC) FILETIME=[13FC1EB0:01C432A1] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 05 May 2004 08:01:27 -0500 From: "Kyle, John" Subject: RE: Power up problems Sender: owner-linac-eng@plato.aristotle.net To: "Williams, Rod" , JamesR.Wilson@providence.org, Dave.Pinchin@cdhb.govt.nz, linac-eng@plato.aristotle.net X-MimeOLE: Produced By Microsoft Exchange V6.0.6249.0 content-class: urn:content-classes:message Thread-Topic: Power up problems Thread-Index: AcQynq33xeU4cAqiTgWRkFdS+yaIIwAAY/mg X-OriginalArrivalTime: 05 May 2004 13:01:27.0963 (UTC) FILETIME=[13FC1EB0:01C432A1] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This is a multi-part message in MIME format. --Boundary_(ID_DOINz+R7iM/utG8IQYjEEQ) Content-type: text/plain; charset=us-ascii Content-transfer-encoding: quoted-printable The coll fault is a software bug. It occurs when you have an Emergency Off situation. I learned this a couple of years ago after troubleshooting this for several hours. As far as I know Varian has no plan to fix this bug. Jose is correct. just go into service mode and back out, the fault will clear. =20 -----Original Message----- From: Williams, Rod [mailto:rod.williams@phci.org]=20 Sent: Wednesday, May 05, 2004 4:33 AM To: 'JamesR.Wilson@providence.org'; Dave.Pinchin@cdhb.govt.nz; linac-eng@plato.aristotle.net Subject: RE: Power up problems Hi when you say slip into service mode or physics I assume you are in standby mode?? I have the techs resetting the console computer in the standby mode if the machine goes down to avoid the coll fault before they turn the linac on. I have the console computer on a UPS so they have to reset it whenever the machine goes down. -----Original Message-----=20 From: JamesR.Wilson@providence.org [mailto:JamesR.Wilson@providence.org] Sent: Tuesday, May 04, 2004 7:05 PM=20 To: Dave.Pinchin@cdhb.govt.nz; linac-eng@plato.aristotle.net=20 Subject: RE: Power up problems=20 Dave we have been experiencing the "COL" interlock problem for the last=20 2 years (that's how old our machines are). It is very infrequent and the techs know to go to physics of service mode and back out, to fix the=20 problem. I don't know what the scenario is that initiates this problem.=20 Anyone know anything else about this?? Thanks!=20 Jim Wilson=20 Providence Health System=20 Portland, OR.=20 The solution was to slip out of morning check and into service mode.=20 This automatically cleared the i/l and everything worked again ! ! ! !=20 Any thoughts.=20 :\=20 This information is confidential and intended solely for the use of the individual or entity to whom it is addressed.=20 If you have received this email in error please notify the sender or our Customer Support Center at (262) 928-2777.=20 We have scanned this email and its attachments for malicious content.=20 However, the recipient should check this email and any attachments for the presence of viruses.=20 ProHealth Care accepts no liability for any damage caused by any virus transmitted by this email.=20 --Boundary_(ID_DOINz+R7iM/utG8IQYjEEQ) Content-type: text/html; charset=us-ascii Content-transfer-encoding: quoted-printable Message
The=20 coll fault is a software bug. It occurs when you have an Emergency Off=20 situation. I learned this a couple of years ago after troubleshooting = this for=20 several hours. As far as I know Varian has no plan to fix this bug. Jose = is=20 correct. just go into service mode and back out, the fault will=20 clear.
 
-----Original Message-----
From: = Williams, Rod=20 [mailto:rod.williams@phci.org]
Sent: Wednesday, May 05, = 2004 4:33=20 AM
To: 'JamesR.Wilson@providence.org'; = Dave.Pinchin@cdhb.govt.nz;=20 linac-eng@plato.aristotle.net
Subject: RE: Power up=20 problems

Hi when you say slip into service mode or physics I = assume you=20 are in standby mode?? I have the techs resetting the console computer = in the=20 standby mode if the machine goes down to avoid the coll fault before = they turn=20 the linac on. I have the console computer on a UPS so they have to = reset it=20 whenever the machine goes down.

-----Original Message-----
From:=20 JamesR.Wilson@providence.org [mailto:JamesR.Wilson@provide= nce.org]=20
Sent: Tuesday, May 04, 2004 7:05 PM =
To: Dave.Pinchin@cdhb.govt.nz; = linac-eng@plato.aristotle.net=20
Subject: RE: Power up problems


Dave we have been experiencing the "COL" interlock = problem for=20 the last
2 years (that's how old our = machines are). It=20 is very infrequent and the
techs know to go = to physics=20 of service mode and back out, to fix the
problem. I=20 don't know what the scenario is that initiates this problem. =
Anyone know anything else about this?? Thanks!

Jim Wilson
Providence = Health=20 System
Portland, OR.

The solution was to slip out of morning check and = into service=20 mode.
This automatically cleared the i/l and = everything worked again ! ! ! !

Any thoughts.
:\ =


This information is confidential and intended solely = for the=20 use of the individual or entity to whom it is addressed. =
If you have received this email in error please notify the = sender or=20 our Customer Support Center at (262) 928-2777.

We have scanned this email and its attachments for = malicious=20 content.
However, the recipient should check = this=20 email and any attachments for the presence of viruses. =
ProHealth Care accepts no liability for any damage caused by = any virus=20 transmitted by this email.

--Boundary_(ID_DOINz+R7iM/utG8IQYjEEQ)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HX900MHP0XWU3@hubbard.azu.nl> for jkok@sims-ms-daemon; Wed, 5 May 2004 18:10:50 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050518104812374 for ; Wed, 05 May 2004 18:10:48 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA27575 for ; Wed, 05 May 2004 18:11:00 +0200 (MET DST) Received: from smtp.jiscmail.ac.uk(130.246.192.55) by armstrong.azu.nl via smap (V1.3) id xma027494; Wed, 05 May 2004 18:10:22 +0200 Received: from LISTSERV.JISCMAIL.AC.UK (jiscmail.ac.uk) by smtp.jiscmail.ac.uk (LSMTP for Windows NT v1.1b) with SMTP id <4.000FD9FA@smtp.jiscmail.ac.uk>; Wed, 05 May 2004 17:10:02 +0100 Received: from JISCMAIL.AC.UK by JISCMAIL.AC.UK (LISTSERV-TCP/IP release 1.8e) with spool id 36840623 for MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK; Wed, 05 May 2004 17:10:02 +0100 Received: from 130.246.192.53 by JISCMAIL.AC.UK (SMTPL release 1.0i) with TCP; Wed, 05 May 2004 17:10:02 +0100 Received: from mail20.nhs.uk (mail20.nhs.uk [62.6.139.212]) by fili.jiscmail.ac.uk (8.12.8/8.12.8) with ESMTP id i45G9cY9021463 for ; Wed, 05 May 2004 17:09:48 +0100 Received: from [10.191.254.3] (helo=relayint1.nhs.uk) by mail20.nhs.uk with esmtp (MTC MTA) id 1BLOxT-00041D-W5 for MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK; Wed, 05 May 2004 17:09:19 +0100 Received: from relay.nhs.uk (194.62.42.142) by relayint1.nhs.uk (Syntegra-I1 7.0.008) id 40926E2F000E8819 for MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK; Wed, 05 May 2004 17:08:14 +0100 Received: from smtp2.tayside.scot.nhs.uk (10.252.0.27) by relay.nhs.uk (Syntegra-2 7.0.008) (authenticated as smtp2_tayside_scot_nhs_uk@es2002.nhs.uk) id 40990AC5000036A0 for MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK; Wed, 05 May 2004 17:08:13 +0100 Received: from smtp2.tayside.scot.nhs.uk (localhost [127.0.0.1]) by localhost.tayside.scot.nhs.uk (Postfix) with ESMTP id 5853C21DE for ; Wed, 05 May 2004 17:08:13 +0100 (BST) Received: from gonzalo.tuht.scot.nhs.uk (gonzalo.tuht.scot.nhs.uk [212.148.128.10]) by smtp2.tayside.scot.nhs.uk (Postfix) with ESMTP id 3C20621DD for ; Wed, 05 May 2004 17:08:13 +0100 (BST) Received: from tuht.scot.nhs.uk (localhost [127.0.0.1]) by gonzalo.tuht.scot.nhs.uk (iPlanet Messaging Server 5.2 HotFix 1.25 (built Mar 3 2004)) with ESMTP id <0HX90059V0TOTB@gonzalo.tuht.scot.nhs.uk> for MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK; Wed, 05 May 2004 17:08:13 +0100 (BST) Received: from [10.252.34.161] by gonzalo.tuht.scot.nhs.uk (mshttpd); Wed, 05 May 2004 17:08:12 +0100 Date: Wed, 05 May 2004 17:08:12 +0100 From: Stephen Mason Subject: Re: Dicom Viewer for iMac Sender: Discussion amongst academic Medical Physics in the UK To: MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK Reply-to: Discussion amongst academic Medical Physics in the UK Message-id: MIME-version: 1.0 X-Mailer: iPlanet Messenger Express 5.2 HotFix 1.25 (built Mar 3 2004) Content-type: MULTIPART/MIXED; BOUNDARY="Boundary_(ID_FNOC+R1udo5ftXW5Kk7H0g)" Content-language: en Priority: normal Precedence: list X-RAL-MFrom: X-RAL-Connect: X-Accept-Language: en X-CCLRC-SPAM-report: -4.9 : BAYES_00 X-Scanned-By: MIMEDefang 2.38 *** EOOH *** Date: Wed, 05 May 2004 17:08:12 +0100 From: Stephen Mason Subject: Re: Dicom Viewer for iMac Sender: Discussion amongst academic Medical Physics in the UK To: MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK Reply-to: Discussion amongst academic Medical Physics in the UK Content-language: en Priority: normal X-RAL-MFrom: X-RAL-Connect: X-Accept-Language: en X-CCLRC-SPAM-report: -4.9 : BAYES_00 X-Scanned-By: MIMEDefang 2.38 This is a multi-part message in MIME format. --Boundary_(ID_FNOC+R1udo5ftXW5Kk7H0g) Content-type: text/plain; charset=us-ascii Content-disposition: inline Content-transfer-encoding: 7BIT have a look on the following site use the finder to select your platform etc http://www.idoimaging.com/cgi-bin/imaging/programs.pl there should be something there good luck. Stephen Mason ----- Original Message ----- From: Tracy Cayton-Smith Date: Wednesday, May 5, 2004 2:45 pm Subject: Dicom Viewer for iMac > Dear All, > Does any one have any experience of Dicom viewers for iMacs? > All medico legal X-ray copies are currently being scanned and > burnt to > disc. We are including a Hipax viewer for the end user. Unfortunately > this is not Mac compatible, but we have only had one complaint. > Any advice would be welcomed especially since we don't have access to > an iMac to test any freeware we may be able to download! > > > > Tracy Cayton-Smith > Superintendent Radiographer > Medical Physics > RCH Treliske > Truro > TR1 3LJ > > Tel: 01872 252683 > Fax: 01872 252493 > ------------------------------------------------------------------- > ---------------------------------- > The information in this e-mail and any attachments is confidential > and is intended for the attention and use of the named > addressee(s). It must not be disclosed to any other person > without our authority. If you are not the intended recipient, or a > person responsible for delivering it to the intended recipient or > are aware that this e-mail has been sent to you in error, you are > not authorised to and must not disclose, copy, distribute, or > retain this message or any part of it. > > We sweep all outgoing messages for the presence of computer > viruses. However, we cannot accept any responsibility for any > loss or damage to your systems due to viruses or malicious code > not detected. > > The statements and opinions expressed in this message are > those of the author and do not necessarily reflect those of the > organisations within the Cornwall & Isles of Scilly Health > Community > ------------------------------------------------------------------- > --------------------------------- --Boundary_(ID_FNOC+R1udo5ftXW5Kk7H0g) Content-type: text/x-vcard; charset=windows-1252; name=smason.vcf Content-description: Card for Stephen Mason Content-disposition: attachment; filename=smason.vcf Content-transfer-encoding: 7BIT begin:vcard n:Mason;Stephen fn:Stephen Mason tel;work:01382 632315 org:Ninewells Hospital;Radiotherapy adr:;;;Dundee;;DD1 9SY;Scotland version:2.1 email;internet:stephen.mason@tuht.scot.nhs.uk title:Clinical Scientist end:vcard --Boundary_(ID_FNOC+R1udo5ftXW5Kk7H0g)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HX90033V15N3U@hubbard.azu.nl>; Wed, 5 May 2004 18:15:25 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050518152212447 ; Wed, 05 May 2004 18:15:22 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA28068; Wed, 05 May 2004 18:15:34 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma028020; Wed, 05 May 2004 18:15:22 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id JAA02963 for linac-eng-list; Wed, 05 May 2004 09:28:21 -0500 (CDT) Received: from mail22.nhs.uk (mail22.nhs.uk [62.6.139.218]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id JAA02959 for ; Wed, 05 May 2004 09:28:18 -0500 (CDT) Received: from [10.191.254.3] (helo=relayint2.nhs.uk) by mail22.nhs.uk with esmtp (MTC MTA) id 1BLNNE-0002cs-5b for LINAC-ENG@plato.aristotle.net; Wed, 05 May 2004 15:27:48 +0100 Received: from relay.nhs.uk (194.62.42.141) by relayint2.nhs.uk (Syntegra-I2 7.0.008) id 409511E6000BF3AC for LINAC-ENG@plato.aristotle.net; Wed, 05 May 2004 15:27:48 +0100 Received: from ubht.swest.nhs.uk (194.101.53.2) by relay.nhs.uk (Syntegra-1 7.0.008) id 4098E2B1000121BE for LINAC-ENG@plato.aristotle.net; Wed, 05 May 2004 15:27:48 +0100 Received: by ubhtfw1.ubht.swest.nhs.uk id <119045>; Wed, 05 May 2004 15:04:51 +0100 Date: Wed, 05 May 2004 15:27:32 +0100 From: "White, Malcolm" Subject: Pacemakers Sender: owner-linac-eng@plato.aristotle.net To: "'LINAC-ENG@PLATO.ARISTOTLE.net'" Message-id: <04May5.150451bst.119045@ubhtfw1.ubht.swest.nhs.uk> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 05 May 2004 15:27:32 +0100 From: "White, Malcolm" Subject: Pacemakers Sender: owner-linac-eng@plato.aristotle.net To: "'LINAC-ENG@PLATO.ARISTOTLE.net'" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f When I worked at Cheltenham some doctors insisted on monitoring pacemakers especially those adjacent to the beam. As far as I can remember no adverse effects were reported. Here at Bristol we rarely monitor patients but one of our engineers destroyed a DVM by leaving it under the beam. -- Malc MEMO  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HX90034E16L3U@hubbard.azu.nl>; Wed, 5 May 2004 18:16:04 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050518160112462 ; Wed, 05 May 2004 18:16:01 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA28149; Wed, 05 May 2004 18:16:13 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma028098; Wed, 05 May 2004 18:15:54 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id JAA02993 for linac-eng-list; Wed, 05 May 2004 09:32:03 -0500 (CDT) Received: from mail21.nhs.uk (mail21.nhs.uk [62.6.139.215]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id JAA02989 for ; Wed, 05 May 2004 09:32:01 -0500 (CDT) Received: from [10.191.254.3] (helo=relayint1.nhs.uk) by mail21.nhs.uk with esmtp (MTC MTA) id 1BLNQo-0006ar-H1 for linac-eng@plato.aristotle.net; Wed, 05 May 2004 15:31:30 +0100 Received: from relay.nhs.uk (194.62.42.141) by relayint1.nhs.uk (Syntegra-I1 7.0.008) id 40926E2F000DD269 for linac-eng@plato.aristotle.net; Wed, 05 May 2004 15:31:30 +0100 Received: from beijing.relay.grampian.scot.nhs.uk (10.251.30.7) by relay.nhs.uk (Syntegra-1 7.0.008) (authenticated as relay_grampian_scot_nhs_uk@es2002.nhs.uk) id 4098E2B100012D1D; Wed, 05 May 2004 15:31:30 +0100 Received: from mail pickup service by beijing.relay.grampian.scot.nhs.uk with Microsoft SMTPSVC; Wed, 05 May 2004 15:29:52 +0100 Received: from relay.nhs.uk ([194.62.42.123]) by beijing.relay.grampian.scot.nhs.uk with Microsoft SMTPSVC(5.0.2195.6872) ; Wed, 05 May 2004 15:28:23 +0100 Received: from mail13.nhs.uk (62.6.139.209) by relay.nhs.uk (Syntegra-2 7.0.008) id 4098E31300013024; Wed, 05 May 2004 15:29:49 +0100 Received: from plato.aristotle.net ([206.66.224.2]) by mail13.nhs.uk with esmtp (MTC MTA) id 1BLNPB-0006WI-25; Wed, 05 May 2004 15:29:49 +0100 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id IAA29747 for linac-eng-list; Wed, 05 May 2004 08:02:17 -0500 (CDT) Received: from mail2.tenethealth.com (mail2.tenethealth.com [199.222.14.8]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id IAA29743 for ; Wed, 05 May 2004 08:02:15 -0500 (CDT) Received: from tenhdcthvscan01.tenethealth.net ([172.18.167.160]) by mail2.tenethealth.com (8.11.6/8.11.6) with SMTP id i45D1iR19410; Wed, 05 May 2004 08:01:44 -0500 Received: from nodnsquery(172.18.167.214) by tenhdcthvscan01.tenethealth.net via csmap id 5c0f1c20_9e94_11d8_911b_0002b3d786fe_6747; Wed, 05 May 2004 08:01:44 -0500 (CDT) Received: from tenbmcthemx01.tenethealth.net ([10.30.2.48]) by tenhdcthemx53.tenethealth.net with Microsoft SMTPSVC(5.0.2195.6713); Wed, 05 May 2004 08:01:27 -0500 Date: Wed, 05 May 2004 08:01:27 -0500 From: "Kyle, John" Subject: RE: Power up problems [Scanned By SOPHOS Anti-Virus] Sender: owner-linac-eng@plato.aristotle.net To: "Williams, Rod" , JamesR.Wilson@providence.org, Dave.Pinchin@cdhb.govt.nz, linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_l0JjjSGFUPFyxt4e/SnMrQ)" Importance: normal Precedence: bulk X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4927.1200 Content-Class: urn:content-classes:message Thread-Topic: Power up problems thread-index: AcQynq33xeU4cAqiTgWRkFdS+yaIIwAAY/mg X-OriginalArrivalTime: 05 May 2004 13:01:27.0963 (UTC) FILETIME=[13FC1EB0:01C432A1] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 05 May 2004 08:01:27 -0500 From: "Kyle, John" Subject: RE: Power up problems [Scanned By SOPHOS Anti-Virus] Sender: owner-linac-eng@plato.aristotle.net To: "Williams, Rod" , JamesR.Wilson@providence.org, Dave.Pinchin@cdhb.govt.nz, linac-eng@plato.aristotle.net Importance: normal X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4927.1200 Content-Class: urn:content-classes:message Thread-Topic: Power up problems thread-index: AcQynq33xeU4cAqiTgWRkFdS+yaIIwAAY/mg X-OriginalArrivalTime: 05 May 2004 13:01:27.0963 (UTC) FILETIME=[13FC1EB0:01C432A1] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This is a multi-part message in MIME format. --Boundary_(ID_l0JjjSGFUPFyxt4e/SnMrQ) Content-type: text/plain; charset=us-ascii Content-transfer-encoding: quoted-printable The coll fault is a software bug. It occurs when you have an Emergency Off situation. I learned this a couple of years ago after troubleshooting this for several hours. As far as I know Varian has no plan to fix this bug. Jose is correct. just go into service mode and back out, the fault will clear. =20 -----Original Message----- From: Williams, Rod [mailto:rod.williams@phci.org]=20 Sent: Wednesday, May 05, 2004 4:33 AM To: 'JamesR.Wilson@providence.org'; Dave.Pinchin@cdhb.govt.nz; linac-eng@plato.aristotle.net Subject: RE: Power up problems Hi when you say slip into service mode or physics I assume you are in standby mode?? I have the techs resetting the console computer in the standby mode if the machine goes down to avoid the coll fault before they turn the linac on. I have the console computer on a UPS so they have to reset it whenever the machine goes down. -----Original Message-----=20 From: JamesR.Wilson@providence.org [mailto:JamesR.Wilson@providence.org] Sent: Tuesday, May 04, 2004 7:05 PM=20 To: Dave.Pinchin@cdhb.govt.nz; linac-eng@plato.aristotle.net=20 Subject: RE: Power up problems=20 Dave we have been experiencing the "COL" interlock problem for the last=20 2 years (that's how old our machines are). It is very infrequent and the techs know to go to physics of service mode and back out, to fix the=20 problem. I don't know what the scenario is that initiates this problem.=20 Anyone know anything else about this?? Thanks!=20 Jim Wilson=20 Providence Health System=20 Portland, OR.=20 The solution was to slip out of morning check and into service mode.=20 This automatically cleared the i/l and everything worked again ! ! ! !=20 Any thoughts.=20 :\=20 This information is confidential and intended solely for the use of the individual or entity to whom it is addressed.=20 If you have received this email in error please notify the sender or our Customer Support Center at (262) 928-2777.=20 We have scanned this email and its attachments for malicious content.=20 However, the recipient should check this email and any attachments for the presence of viruses.=20 ProHealth Care accepts no liability for any damage caused by any virus transmitted by this email.=20 --Boundary_(ID_l0JjjSGFUPFyxt4e/SnMrQ) Content-type: text/html; charset=us-ascii Content-transfer-encoding: quoted-printable Message
The=20 coll fault is a software bug. It occurs when you have an Emergency Off=20 situation. I learned this a couple of years ago after troubleshooting = this for=20 several hours. As far as I know Varian has no plan to fix this bug. Jose = is=20 correct. just go into service mode and back out, the fault will=20 clear.
 
-----Original Message-----
From: = Williams, Rod=20 [mailto:rod.williams@phci.org]
Sent: Wednesday, May 05, = 2004 4:33=20 AM
To: 'JamesR.Wilson@providence.org'; = Dave.Pinchin@cdhb.govt.nz;=20 linac-eng@plato.aristotle.net
Subject: RE: Power up=20 problems

Hi when you say slip into service mode or physics I = assume you=20 are in standby mode?? I have the techs resetting the console computer = in the=20 standby mode if the machine goes down to avoid the coll fault before = they turn=20 the linac on. I have the console computer on a UPS so they have to = reset it=20 whenever the machine goes down.

-----Original Message-----
From:=20 JamesR.Wilson@providence.org [mailto:JamesR.Wilson@provide= nce.org]=20
Sent: Tuesday, May 04, 2004 7:05 PM =
To: Dave.Pinchin@cdhb.govt.nz; = linac-eng@plato.aristotle.net=20
Subject: RE: Power up problems


Dave we have been experiencing the "COL" interlock = problem for=20 the last
2 years (that's how old our = machines are). It=20 is very infrequent and the
techs know to go = to physics=20 of service mode and back out, to fix the
problem. I=20 don't know what the scenario is that initiates this problem. =
Anyone know anything else about this?? Thanks!

Jim Wilson
Providence = Health=20 System
Portland, OR.

The solution was to slip out of morning check and = into service=20 mode.
This automatically cleared the i/l and = everything worked again ! ! ! !

Any thoughts.
:\ =


This information is confidential and intended solely = for the=20 use of the individual or entity to whom it is addressed. =
If you have received this email in error please notify the = sender or=20 our Customer Support Center at (262) 928-2777.

We have scanned this email and its attachments for = malicious=20 content.
However, the recipient should check = this=20 email and any attachments for the presence of viruses. =
ProHealth Care accepts no liability for any damage caused by = any virus=20 transmitted by this email.

--Boundary_(ID_l0JjjSGFUPFyxt4e/SnMrQ)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HX9003LJ1XQ3U@hubbard.azu.nl>; Wed, 5 May 2004 18:32:17 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050518321312757 ; Wed, 05 May 2004 18:32:13 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA00015; Wed, 05 May 2004 18:32:25 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma029958; Wed, 05 May 2004 18:31:52 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id JAA03012 for linac-eng-list; Wed, 05 May 2004 09:33:08 -0500 (CDT) Received: from mail.cbdha.nshealth.ca (mail.cbdha.nshealth.ca [142.176.129.245]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id JAA03008 for ; Wed, 05 May 2004 09:33:06 -0500 (CDT) Received: from ELECTECH ([128.222.7.122]) by mail.cbdha.nshealth.ca (Merak 7.2.3) with SMTP id LOA74478; Wed, 05 May 2004 11:33:05 -0300 Date: Wed, 05 May 2004 11:33:07 -0300 From: Greg MacKinnon Subject: RE: Power up problems In-reply-to: <36298D09ED1AD311B4DC0008C7F4D4E111466427@phsexch6.partners.org> Sender: owner-linac-eng@plato.aristotle.net To: "'Maddox, Buford J'" Cc: "LinacEng (E-mail)" Message-id: <000001c432ad$e253cbd0$7a07de80@ELECTECH> MIME-version: 1.0 X-Mailer: Microsoft Outlook CWS, Build 9.0.2416 (9.0.2910.0) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_D33WlNCuRfn5Pjv0+u5fbw)" Importance: Normal Precedence: bulk X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 (Normal) *** EOOH *** Date: Wed, 05 May 2004 11:33:07 -0300 From: Greg MacKinnon Subject: RE: Power up problems In-reply-to: <36298D09ED1AD311B4DC0008C7F4D4E111466427@phsexch6.partners.org> Sender: owner-linac-eng@plato.aristotle.net To: "'Maddox, Buford J'" Cc: "LinacEng (E-mail)" Importance: Normal X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 (Normal) This is a multi-part message in MIME format. --Boundary_(ID_D33WlNCuRfn5Pjv0+u5fbw) Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 7bit RE: Power up problemsHi Jerry; Varian has a Varis Network Configuration Guide at the following link. http://www.varian.com/orad/prd072a.html It contains recommendation for how the network configuration should be setup. __________________________________________ Greg MacKinnon, C.E.T. Linear Accelerator Service Technologist Cape Breton Cancer Centre 1482 George Street Sydney, Nova Scotia, Canada B1P 1P3 tel: (902) 567-8076 fax: (902) 567-8075 email: mackinnongreg@cbdha.nshealth.ca -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Maddox, Buford J Sent: Wednesday, May 05, 2004 8:11 AM To: 'Williams, Rod'; 'JamesR.Wilson@providence.org'; Dave.Pinchin@cdhb.govt.nz; linac-eng@plato.aristotle.net Subject: RE: Power up problems You don't need to go to standby for the Physics/service mode trick to work. I think what is important is that it initializes the config when you exit the mode and enter the next mode. You do need to be in standby for the CTRL-ALT-DEL linac pc reboot from service keyboard to work. It reboots main pc as well as running selftest. But sometimes this doesn't work, have to reset std bus. If we are not here, we just have them do emergency off in stdby and bring it back up-drastic, but resets everything. And your monthly emergency off check is done! Nasty worm hitting computers today. Gives message something like---system authorized shutdown----leaves junk on the computer. Wish we had an isolated network, can't get one so far. What are people doing to keep their MLCs, Portal Visions, verifiers, etc. safe? Jerry -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Williams, Rod Sent: Wednesday, May 05, 2004 5:33 AM To: 'JamesR.Wilson@providence.org'; Dave.Pinchin@cdhb.govt.nz; linac-eng@plato.aristotle.net Subject: RE: Power up problems Hi when you say slip into service mode or physics I assume you are in standby mode?? I have the techs resetting the console computer in the standby mode if the machine goes down to avoid the coll fault before they turn the linac on. I have the console computer on a UPS so they have to reset it whenever the machine goes down. -----Original Message----- From: JamesR.Wilson@providence.org [mailto:JamesR.Wilson@providence.org] Sent: Tuesday, May 04, 2004 7:05 PM To: Dave.Pinchin@cdhb.govt.nz; linac-eng@plato.aristotle.net Subject: RE: Power up problems Dave we have been experiencing the "COL" interlock problem for the last 2 years (that's how old our machines are). It is very infrequent and the techs know to go to physics of service mode and back out, to fix the problem. I don't know what the scenario is that initiates this problem. Anyone know anything else about this?? Thanks! Jim Wilson Providence Health System Portland, OR. The solution was to slip out of morning check and into service mode. This automatically cleared the i/l and everything worked again ! ! ! ! Any thoughts. :\ This information is confidential and intended solely for the use of the individual or entity to whom it is addressed. If you have received this email in error please notify the sender or our Customer Support Center at (262) 928-2777. We have scanned this email and its attachments for malicious content. However, the recipient should check this email and any attachments for the presence of viruses. ProHealth Care accepts no liability for any damage caused by any virus transmitted by this email. --Boundary_(ID_D33WlNCuRfn5Pjv0+u5fbw) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: quoted-printable RE: Power up problems
Hi=20 Jerry;
 
Varian=20 has a Varis Network Configuration Guide at the following link.=20 http://www.varian.com/or= ad/prd072a.html It=20 contains recommendation for how the network configuration should be=20 setup.
 

__________________________________________
Greg = MacKinnon,=20 C.E.T.
Linear Accelerator Service Technologist
Cape Breton Cancer=20 Centre
1482 George Street
Sydney, Nova Scotia, Canada
B1P=20 1P3
tel:  (902) 567-8076
fax: (902) 567-8075
email:=20 mackinnongreg@cbdha.nshealth.ca

 
 
-----Original Message-----
From:=20 owner-linac-eng@plato.aristotle.net=20 [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of = Maddox, Buford=20 J
Sent: Wednesday, May 05, 2004 8:11 AM
To: = 'Williams,=20 Rod'; 'JamesR.Wilson@providence.org'; Dave.Pinchin@cdhb.govt.nz;=20 linac-eng@plato.aristotle.net
Subject: RE: Power up=20 problems

You=20 don't need to go to standby for the Physics/service mode trick to = work. =20 I think what is important is that it initializes the config when you = exit the=20 mode and enter the next mode. 
 
You=20 do need to be in standby for the CTRL-ALT-DEL linac pc reboot from = service=20 keyboard to work.  It reboots main pc as well as running=20 selftest.  But sometimes this doesn't work, have to reset std = bus. =20 If we are not here, we just have them do emergency off in stdby = and bring=20 it back up-drastic, but resets everything.  And your monthly = emergency off check is done! 
 
Nasty worm hitting computers today.  Gives message = something=20 like---system authorized shutdown----leaves junk on the = computer.  Wish=20 we had an isolated network, can't get one so far.  What are = people doing=20 to keep their MLCs, Portal Visions, verifiers, etc. = safe?
 
Jerry
 
 -----Original=20 Message-----
From: owner-linac-eng@plato.aristotle.net=20 [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of = Williams,=20 Rod
Sent: Wednesday, May 05, 2004 5:33 AM
To:=20 'JamesR.Wilson@providence.org'; Dave.Pinchin@cdhb.govt.nz;=20 linac-eng@plato.aristotle.net
Subject: RE: Power up=20 problems

Hi when you say slip into service mode or physics = I assume=20 you are in standby mode?? I have the techs resetting the console = computer in=20 the standby mode if the machine goes down to avoid the coll fault = before=20 they turn the linac on. I have the console computer on a UPS so they = have to=20 reset it whenever the machine goes down.

-----Original Message-----
From:=20 JamesR.Wilson@providence.org [mailto:JamesR.Wilson@provide= nce.org]=20
Sent: Tuesday, May 04, 2004 7:05 PM =
To: Dave.Pinchin@cdhb.govt.nz; = linac-eng@plato.aristotle.net=20
Subject: RE: Power up problems


Dave we have been experiencing the "COL" interlock = problem=20 for the last
2 years (that's how old our = machines=20 are). It is very infrequent and the
techs = know to go=20 to physics of service mode and back out, to fix the
problem. I don't know what the scenario is that initiates = this=20 problem.
Anyone know anything else about = this??=20 Thanks!

Jim Wilson
Providence = Health=20 System
Portland, OR.

The solution was to slip out of morning check and = into=20 service mode.
This automatically cleared = the i/l and=20 everything worked again ! ! ! !

Any thoughts.
:\ =


This information is confidential and intended = solely for the=20 use of the individual or entity to whom it is addressed. =
If you have received this email in error please notify the = sender or=20 our Customer Support Center at (262) 928-2777.

We have scanned this email and its attachments for = malicious=20 content.
However, the recipient should = check this=20 email and any attachments for the presence of viruses. =
ProHealth Care accepts no liability for any damage caused = by any=20 virus transmitted by this email.=20

--Boundary_(ID_D33WlNCuRfn5Pjv0+u5fbw)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HX9003T92923U@hubbard.azu.nl>; Wed, 5 May 2004 18:39:07 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050518390512888 ; Wed, 05 May 2004 18:39:05 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA00917; Wed, 05 May 2004 18:39:17 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma000874; Wed, 05 May 2004 18:39:04 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id JAA03715 for linac-eng-list; Wed, 05 May 2004 09:52:11 -0500 (CDT) Received: from msgia.hs.uab.edu (gw5.uabmc.edu [164.111.37.252]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id JAA03711 for ; Wed, 05 May 2004 09:52:09 -0500 (CDT) Received: from INET-MTA by msgia.hs.uab.edu with Novell_GroupWise; Wed, 05 May 2004 09:51:09 -0500 Date: Wed, 05 May 2004 09:50:52 -0500 From: Stephen Jordan Subject: MMLC command explanation Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.5.1 Content-type: text/plain; charset=US-ASCII Content-disposition: inline Content-transfer-encoding: 7bit Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 05 May 2004 09:50:52 -0500 From: Stephen Jordan Subject: MMLC command explanation Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Content-disposition: inline X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f I attended Millenium MLC school two years ago; there was no mention made of this command: "diagSecStatsShow 2" I have used the command when performing my weekly diagLeafPWMTests, but could not understand most of it. The V guys use it quite frequently. Can someone explain the meaning of the output columns? Thanks in advance! Steve Jordan UAB Rad Physics  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HX90074V58UHE@hubbard.azu.nl>; Wed, 5 May 2004 19:43:48 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050519434114024 ; Wed, 05 May 2004 19:43:41 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA08291; Wed, 05 May 2004 19:43:53 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma008243; Wed, 05 May 2004 19:43:45 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id KAA04743 for linac-eng-list; Wed, 05 May 2004 10:35:33 -0500 (CDT) Received: from ohsmtpout.civic1.ottawahospital.on.ca (mail.toh.on.ca [204.187.34.1]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id KAA04739 for ; Wed, 05 May 2004 10:35:31 -0500 (CDT) Received: from c-gen-exch02.Ottawahospital.on.ca (Not Verified[10.249.5.25]) by ohsmtpout.civic1.ottawahospital.on.ca with NetIQ MailMarshal (v5.5.5.9) id ; Wed, 05 May 2004 11:34:57 -0400 Received: by c-gen-exch02.ottawahospital.on.ca with Internet Mail Service (5.5.2657.72) id ; Wed, 05 May 2004 11:34:57 -0400 Date: Wed, 05 May 2004 11:34:51 -0400 From: "MacPherson, Miller" Subject: Siemens KD2 Dark Current Sender: owner-linac-eng@plato.aristotle.net To: "'linac-eng@plato.aristotle.net'" Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 05 May 2004 11:34:51 -0400 From: "MacPherson, Miller" Subject: Siemens KD2 Dark Current Sender: owner-linac-eng@plato.aristotle.net To: "'linac-eng@plato.aristotle.net'" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f We have a Siemens KD2 that's about 7 years old. For the past few months, the dark current has been creeping up, so that our electronics guys can now achieve 600 MU/min for 13 MeV electrons, without injector. The have also had to add lens to 18 MV photons to prevent an MU interlock during autosequencing. We can no longer treat with electrons with this machine. My question is, is this a sign of an imminent failure of the accelerating section, or can we expect to treat with photons indefinitely? Cheers, Miller Miller MacPherson, PhD FCCPM Senior Medical Physicist Ottawa Regional Cancer Centre 503 Smyth Road, Ottawa, ON K1H 1C4 613.737.7700 x6827 fax 613.247.3507 Please note new e-mail address: mmacpherson@ottawahospital.on.ca  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HX9007C45SBHE@hubbard.azu.nl>; Wed, 5 May 2004 19:55:27 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050519552214227 ; Wed, 05 May 2004 19:55:22 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA09611; Wed, 05 May 2004 19:55:34 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma009596; Wed, 05 May 2004 19:55:24 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id LAA05842 for linac-eng-list; Wed, 05 May 2004 11:00:04 -0500 (CDT) Received: from andromeda.mcvh-vcu.edu (nethawk.mcvh-vcu.edu [208.0.115.232]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id LAA05837; Wed, 05 May 2004 11:00:02 -0500 (CDT) Received: from mcv-hub.mcvh-vcu.edu ([206.105.121.24]) by andromeda.mcvh-vcu.edu (8.12.10/8.12.10) with ESMTP id i45Fx38w001576; Wed, 05 May 2004 11:59:03 -0400 Date: Wed, 05 May 2004 11:59:25 -0400 From: Chris Bartee Subject: Re: pacemakers In-reply-to: <36298D09ED1AD311B4DC0008C7F4D4E111466429@phsexch6.partners.org> Sender: owner-linac-eng@plato.aristotle.net To: "Maddox, Buford J" Cc: "'LINAC-ENG@PLATO.ARISTOTLE.net'" , owner-linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Lotus Notes Release 6.5.1 January 21, 2004 Content-type: text/plain; charset=US-ASCII Precedence: bulk X-MIMETrack: Serialize by Router on MCV-Hub/MCVH(Release 6.5.1|January 21, 2004) at 05/05/2004 12:00:10 PM X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 05 May 2004 11:59:25 -0400 From: Chris Bartee Subject: Re: pacemakers In-reply-to: <36298D09ED1AD311B4DC0008C7F4D4E111466429@phsexch6.partners.org> Sender: owner-linac-eng@plato.aristotle.net To: "Maddox, Buford J" Cc: "'LINAC-ENG@PLATO.ARISTOTLE.net'" , owner-linac-eng@plato.aristotle.net X-MIMETrack: Serialize by Router on MCV-Hub/MCVH(Release 6.5.1|January 21, 2004) at 05/05/2004 12:00:10 PM X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f I remember seeing a report from Varian that was about magnetic fields at the clinac isocenter. Varian should be able to supply you with it. It might come in helpful in determining your dept's policy on pacemakers. Just a thought Chris Bartee NOTE: The information contained in this message may be privileged and confidential and protected from disclosure. If the reader of this message is not the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please notify us immediately by replying to the message and deleting it from your computer. -------------------------------------- VCU Health System http://www.vcuhealth.org NOTE: The information contained in this message may be privileged and confidential and protected from disclosure. If the reader of this message is not the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please notify us immediately by replying to the message and deleting it from your computer. -------------------------------------- VCU Health System http://www.vcuhealth.org  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HX900B0HAZCJY@hubbard.azu.nl>; Wed, 5 May 2004 21:47:38 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050521473615973 ; Wed, 05 May 2004 21:47:36 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id VAA21841; Wed, 05 May 2004 21:47:47 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma021817; Wed, 05 May 2004 21:47:30 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id MAA08336 for linac-eng-list; Wed, 05 May 2004 12:50:58 -0500 (CDT) Received: from vhost01.spinn.net (vhost01.spinn.net [216.223.237.32]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id MAA08332 for ; Wed, 05 May 2004 12:50:55 -0500 (CDT) Received: from LT7 ([216.223.230.38]) by vhost01.spinn.net (8.11.6/8.11.6) with SMTP id i45Iinc23056 for ; Wed, 05 May 2004 12:44:50 -0600 Date: Wed, 05 May 2004 11:53:39 -0600 From: Steve Davis Subject: Parts Sender: owner-linac-eng@plato.aristotle.net To: "Linac Eng (E-mail)" Message-id: <000801c432c9$e6e996e0$91c8a8c0@nmohc.com> MIME-version: 1.0 X-Mailer: Microsoft Outlook Express 6.00.2800.1158 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_+IoZWKWRGZSLCws6gvU9Dw)" Precedence: bulk X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 *** EOOH *** Date: Wed, 05 May 2004 11:53:39 -0600 From: Steve Davis Subject: Parts Sender: owner-linac-eng@plato.aristotle.net To: "Linac Eng (E-mail)" X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 This is a multi-part message in MIME format. --Boundary_(ID_+IoZWKWRGZSLCws6gvU9Dw) Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: quoted-printable The following is a list of parts that we would like to sell. If you are = interested please contact me with your offer. 30cm lower wedge set 15,30,45,60deg Tissue compensator mount 30cm Digitizers GTCO 2 each MLC HDTSE tray MLC TBIX tray MLC TBIE tray G-256 X-RAY TUBE,VARIAN,USED with heat exchanger Steve Davis New Mexico Oncology Hematology Consultants. 4901 Lang Ave. NE Albuquerque, N.M. 87109=20 505-379-7665 steved@nmohc.com=20 --Boundary_(ID_+IoZWKWRGZSLCws6gvU9Dw) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: quoted-printable
The following is a list of parts that = we would like=20 to sell. If you are interested please contact me with your = offer.
 
30cm lower wedge set = 15,30,45,60deg
Tissue compensator = mount 30cm
Digitizers GTCO 2 = each
MLC HDTSE tray
MLC TBIX tray
MLC TBIE tray
G-256 X-RAY TUBE,VARIAN,USED with = heat=20 exchanger
 
Steve Davis
New Mexico Oncology = Hematology=20 Consultants.
4901 Lang Ave. NE
Albuquerque, N.M. 87109=20
505-379-7665
steved@nmohc.com 
 
--Boundary_(ID_+IoZWKWRGZSLCws6gvU9Dw)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HX900HWZGRUN0@hubbard.azu.nl>; Wed, 5 May 2004 23:52:47 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050523524417942 ; Wed, 05 May 2004 23:52:44 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id XAA05667; Wed, 05 May 2004 23:52:57 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma005624; Wed, 05 May 2004 23:52:28 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id OAA11692 for linac-eng-list; Wed, 05 May 2004 14:55:37 -0500 (CDT) Received: from pop.sca.hin.sk.ca (shin.communitynet.ca [216.174.136.2]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id OAA11688 for ; Wed, 05 May 2004 14:55:35 -0500 (CDT) Received: from smtp.scf.sk.ca (unverified [172.24.48.3]) by scf.sk.ca (Rockliffe SMTPRA 6.0.11) with SMTP id for ; Wed, 05 May 2004 13:55:34 -0600 Received: (from spc106 [172.24.56.30]) by smtp.scf.sk.ca (SAVSMTP 3.1.1.32) with SMTP id M2004050513553302713 for ; Wed, 05 May 2004 13:55:33 -0600 Date: Wed, 05 May 2004 13:55:34 -0600 From: Chris Barnardo Subject: Linacs for Removal Sender: owner-linac-eng@plato.aristotle.net To: "Linac-Engineers, Listserver (Linac-Engineers, Listserver)" Message-id: <002101c432da$ed92b290$1e3818ac@sca.hin.sk.ca> MIME-version: 1.0 X-Mailer: Microsoft Outlook, Build 10.0.6626 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_c/Hca9RwQJVAQ6Z5b/TJ+w)" Importance: Normal Precedence: bulk X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 (Normal) *** EOOH *** Date: Wed, 05 May 2004 13:55:34 -0600 From: Chris Barnardo Subject: Linacs for Removal Sender: owner-linac-eng@plato.aristotle.net To: "Linac-Engineers, Listserver (Linac-Engineers, Listserver)" Importance: Normal X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 (Normal) This is a multi-part message in MIME format. --Boundary_(ID_c/Hca9RwQJVAQ6Z5b/TJ+w) Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: quoted-printable =20 Hi Group =20 We have 2 Linacs that are ready for removal =20 1) Siemens Mevatron 6700 6MV. s/n 1581. circa 1984. machine was = running when last powered up (approx 1 yr ago) =20 2) Philips SL25, s/n 5022 circa 1988. Energies 6 and 18 MV, 4, 6, 8, = 10, 12, 15, 18, 20, 22 MeV. Machine is currently in running condition These units are available immediately either as a whole or purchase = of parts. =20 Some parts that may be of interest: =20 SL25: Ion Chamber (1 Yr Old), Slitless Flight Tube (1 Yr Old), = Magnetron (Several Available), Thyratron (Several Available), Launch Tube, HP = Phase Shifter, Water Pump (New (Quiet) style), Javelin Cabinet, Wedge Assy, = Ion pumps & Supplies, LVPSU (New Caps), Misc Cards (Old and New), etc. =20 Mev 6700: Power Supplies, S9 Panel, Wedges, etc =20 If you are interested in purchasing the whole unit you will be responsible for removal on the Saskatoon Cancer Centre's terms. =20 Please Contact me directly by email at cbarnardo@scf.sk.ca if you = are interested in any of these machines or parts. =20 Chris Barnardo Physics Tech Saskatoon Cancer Centre 20 Campus Drive Saskatoon, Sk Canada S7N 4H4 =20 Ph: (306) 655-2699 Fax: (306) 655-2701 e-mail: cbarnardo@scf.sk.ca=20 =20 =20 =20 --Boundary_(ID_c/Hca9RwQJVAQ6Z5b/TJ+w) Content-type: text/html; charset=US-ASCII Content-transfer-encoding: quoted-printable Message
 
Hi=20 Group
 
    We have 2 Linacs that are ready for removal
 
    1) Siemens Mevatron 6700 6MV. s/n 1581. circa 1984. machine was = running=20 when last powered up (approx 1 yr ago)
 
    2) Philips SL25, s/n 5022 circa 1988. Energies 6 and 18 = MV, 4, 6, 8,=20 10, 12, 15, 18, 20, 22 MeV. Machine is currently in running=20 condition

    = These units are available immediately either as a = whole or=20 purchase of parts.
 
    = Some parts that may be of interest:
 
    = SL25: Ion Chamber (1 Yr Old), Slitless Flight Tube (1 Yr Old), = Magnetron=20 (Several Available), Thyratron (Several Available), Launch Tube, HP = Phase=20 Shifter, Water Pump (New (Quiet) style), Javelin Cabinet, Wedge Assy, = Ion pumps=20 & Supplies, LVPSU (New Caps), Misc Cards (Old and New),=20 etc.
 
    = Mev 6700: Power Supplies, S9 Panel, Wedges, = etc
 
    = If you are interested in purchasing the whole unit you will be=20 responsible for removal on the Saskatoon Cancer Centre's=20 terms.
 
    = Please Contact me directly by email at cbarnardo@scf.sk.ca if you are = interested=20 in any of these machines or parts.
 
Chris Barnardo
Physics Tech
Saskatoon = Cancer=20 Centre
20 Campus Drive
Saskatoon, Sk
Canada
S7N = 4H4
 
Ph: (306) = 655-2699
Fax:=20 (306) 655-2701
e-mail: cbarnardo@scf.sk.ca
 
 
 
--Boundary_(ID_c/Hca9RwQJVAQ6Z5b/TJ+w)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXA00LAFJTM64@hubbard.azu.nl>; Thu, 6 May 2004 13:56:11 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050613560905414 ; Thu, 06 May 2004 13:56:09 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id NAA22745; Thu, 06 May 2004 13:56:21 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma022711; Thu, 06 May 2004 13:55:54 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id FAA21872 for linac-eng-list; Thu, 06 May 2004 05:04:43 -0500 (CDT) Received: from intfw2.phci.org (user.phci.org [207.67.109.70]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id FAA21868 for ; Thu, 06 May 2004 05:04:41 -0500 (CDT) Received: from intfw2.phci.org (root@localhost) by intfw2.phci.org with ESMTP id i46A49sL023302 for ; Thu, 06 May 2004 05:04:09 -0500 (CDT) Received: from zixvpm00.phci.org (zixvpm01.phci.org [172.20.3.21]) by intfw2.phci.org with ESMTP id i46A497N023299 for ; Thu, 06 May 2004 05:04:09 -0500 (CDT) Received: from zixvpm01.phci.org (ZixVPM [127.0.0.1]) by Outbound.phci.org (Proprietary) with ESMTP id 1EC411A408E for ; Thu, 06 May 2004 05:04:09 -0500 (CDT) Received: from smtpscan.phci.org (smtpscan.phci.org [172.20.3.10]) by zixvpm00.phci.org (Proprietary) with SMTP id 951D21A0053; Thu, 06 May 2004 05:04:05 -0500 (CDT) Received: from wmhmail1.phci.org ([IP=10.1.1.28]) by eSafe SMTP Relay 1083696418; Thu May 6 05:20:21 2004 Received: by wmhmail1.phci.org with Internet Mail Service (5.5.2657.72) id ; Thu, 06 May 2004 05:04:05 -0500 Date: Thu, 06 May 2004 05:04:04 -0500 From: "Williams, Rod" Subject: RE: MMLC command explanation Sender: owner-linac-eng@plato.aristotle.net To: 'Stephen Jordan' , linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_TWMBEipCXuEvwIv8ykbEbA)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 06 May 2004 05:04:04 -0500 From: "Williams, Rod" Subject: RE: MMLC command explanation Sender: owner-linac-eng@plato.aristotle.net To: 'Stephen Jordan' , linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_TWMBEipCXuEvwIv8ykbEbA) Content-type: text/plain; charset=iso-8859-1 Hi Steve The most common command used in this area after the diagLeafPWMTestAll is the "diagMaxDeltaPriSecShow 2" this is run after 50 autocycles to look for leaf crashes. Your numbers should all be 0 on this test. As to your "diagSecStatsShow 2" I will have to try it next PM sounds like it gives you the secondary readout for the leaf positions but I don't know what use it would be unless you are having problems, and even then it is probably easier to replace a motor first when problems occur as this causes most of the secondary feedback errors. -- I attended Millenium MLC school two years ago; there was no mention made of this command: "diagSecStatsShow 2" I have used the command when performing my weekly diagLeafPWMTests, but could not understand most of it. The V guys use it quite frequently. Can someone explain the meaning of the output columns? Thanks in advance! Steve Jordan UAB Rad Physics This information is confidential and intended solely for the use of the individual or entity to whom it is addressed. If you have received this email in error please notify the sender or our Customer Support Center at (262) 928-2777. We have scanned this email and its attachments for malicious content. However, the recipient should check this email and any attachments for the presence of viruses. ProHealth Care accepts no liability for any damage caused by any virus transmitted by this email. --Boundary_(ID_TWMBEipCXuEvwIv8ykbEbA) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: quoted-printable RE: MMLC command explanation

Hi  Steve

 The most common command used in this area after t= he diagLeafPWMTestAll is the "diagMaxDeltaPriSecShow 2" this is= run after 50 autocycles to look for leaf crashes. Your numbers should al= l be 0 on this test. As to your "diagSecStatsShow 2" I will hav= e to try it next PM sounds like it gives you the secondary readout for th= e leaf positions but I don't know what use it would be unless you are hav= ing problems, and even then it is probably easier to replace a motor firs= t when problems occur as this causes most of the secondary feedback error= s.

--


I attended Millenium MLC school two years ago; there wa= s no mention made
of this command:

"diagSecStatsShow 2"

I have used the command when performing my weekly diagL= eafPWMTests, but
could not understand most of it.  The V guys use = it quite frequently.
Can someone explain the meaning of the output columns?=   Thanks in
advance!

Steve Jordan
UAB Rad Physics


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--Boundary_(ID_TWMBEipCXuEvwIv8ykbEbA)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXA002WZMRCK5@hubbard.azu.nl>; Thu, 6 May 2004 14:59:43 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050614593707959 ; Thu, 06 May 2004 14:59:37 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id OAA04491; Thu, 06 May 2004 14:59:50 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma004408; Thu, 06 May 2004 14:59:31 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id GAA22523 for linac-eng-list; Thu, 06 May 2004 06:20:47 -0500 (CDT) Received: from mail22.nhs.uk (mail22.nhs.uk [62.6.139.218]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id GAA22519 for ; Thu, 06 May 2004 06:20:46 -0500 (CDT) Received: from [10.191.254.3] (helo=relayint1.nhs.uk) by mail22.nhs.uk with esmtp (MTC MTA) id 1BLgvH-0002FB-OT for linac-eng@plato.aristotle.net; Thu, 06 May 2004 12:20:15 +0100 Received: from relay.nhs.uk (194.62.42.143) by relayint1.nhs.uk (Syntegra-I1 7.0.008) id 40926E2F00116F4F for linac-eng@plato.aristotle.net; Thu, 06 May 2004 12:20:15 +0100 Received: from gstt.nhs.uk (195.105.110.3) by relay.nhs.uk (Syntegra-3 7.0.008) id 40990B210005C70E for linac-eng@plato.aristotle.net; Thu, 06 May 2004 12:20:15 +0100 Received: from (EHLO ex1.gstt.sthames.nhs.uk) (195.105.110.28) by gstt.nhs.uk with SMTP (im); Thu, 06 May 2004 12:22:28 +0100 (GDT) Received: by ex1.gstt.sthames.nhs.uk with Internet Mail Service (5.5.2653.19) id ; Thu, 06 May 2004 12:21:03 +0100 Date: Thu, 06 May 2004 12:21:03 +0100 From: Richard.Newby@gstt.sthames.nhs.uk Subject: Elekta linacs Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 06 May 2004 12:21:03 +0100 From: Richard.Newby@gstt.sthames.nhs.uk Subject: Elekta linacs Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hi Listers We have a problem on our linac. At gantry =0 we get a good doserate at 10MV, however at certain gantry angles ie100 we always get a low dose interlock. No other energies are affected. Any suggestions please, all gratefully accepted Thanks Rick -- **************************************************************************************** Please note that the new telephone number for both Guy's and St. Thomas'is 020 7188 7188. **************************************************************************************** Disclaimer **************************************************************************************** This e-mail may contain confidential and / or privileged information. Unless otherwise specified, the opinions expressed herein do not necessarily represent those of Guy's and St Thomas Hospital NHS Trust or any of its subsidiaries. If you are not the intended recipient (or have received this e-mail in error) please notify the sender and destroy this e-mail immediately. Any unauthorised copying, disclosure or distribution of the material in this e-mail is strictly prohibited. ****************************************************************************************  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXA0077ZPYL6B@hubbard.azu.nl>; Thu, 6 May 2004 16:09:01 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050616085710652 ; Thu, 06 May 2004 16:08:57 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id QAA17664; Thu, 06 May 2004 16:09:10 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma017575; Thu, 06 May 2004 16:08:51 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id HAA23237 for linac-eng-list; Thu, 06 May 2004 07:17:37 -0500 (CDT) Received: from NODCMSTTW2.trinity-health.org (nodcmsttw2.trinity-health.org [170.232.6.96]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id HAA23233 for ; Thu, 06 May 2004 07:17:36 -0500 (CDT) Received: from 170.232.6.101 by NODCMSTTW2.trinity-health.org with SMTP (Trinity Health SMTP Relay); Thu, 06 May 2004 08:18:16 -0400 Received: from FHGATE01-MTA by trinity-health.org with Novell_GroupWise; Thu, 06 May 2004 08:16:55 -0400 Date: Thu, 06 May 2004 08:16:46 -0400 From: Eric Armocida Subject: VEO Base Frame Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.0.3 Content-type: text/plain; charset=us-ascii Content-disposition: inline Content-transfer-encoding: 8bit Precedence: bulk X-Server-Uuid: DBB0C336-23C4-43BF-9A02-445582CFD223 X-WSS-ID: 6C84F2821NG131406-01-01 X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id HAA23234 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 06 May 2004 08:16:46 -0400 From: Eric Armocida Subject: VEO Base Frame Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Content-disposition: inline X-Server-Uuid: DBB0C336-23C4-43BF-9A02-445582CFD223 X-WSS-ID: 6C84F2821NG131406-01-01 X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id HAA23234 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hello Everyone, Our St. Mary's Cancer Center is moving across the street into our new and improved building! We are taking our existing Varian Ximatron C Series Radiotherapy Simulator with us. In an effort to reduce down time, we are in search of a VEO Base Frame. Does anyone have one they would like to sell? Thanks, Eric Eric W. Armocida, C.B.E.T. Radiation Therapy Imaging Equipment Technologist The Cancer Center at Saint Mary's Mercy Medical Center 200 Jefferson SE Grand Rapids, MI 49503 p 616.752.6997 f 616.774.8960 http://www.smcancercenter.com/  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXA00DHSTF6KX@hubbard.azu.nl>; Thu, 6 May 2004 17:23:33 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050617233112914 ; Thu, 06 May 2004 17:23:31 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id RAA00202; Thu, 06 May 2004 17:23:43 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma000169; Thu, 06 May 2004 17:23:18 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id HAA23489 for linac-eng-list; Thu, 06 May 2004 07:33:41 -0500 (CDT) Received: from ms-smtp-04-eri0.southeast.rr.com (ms-smtp-04-lbl.southeast.rr.com [24.25.9.103]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id HAA23485 for ; Thu, 06 May 2004 07:33:39 -0500 (CDT) Received: from RICHARDJKLEIN (clt75-044.carolina.rr.com [24.93.75.44]) by ms-smtp-04-eri0.southeast.rr.com (8.12.10/8.12.7) with SMTP id i46CXZC8013909 for ; Thu, 06 May 2004 08:33:35 -0400 (EDT) Date: Thu, 06 May 2004 08:33:39 -0400 From: Richie Klein Subject: Varian PV "Trips" Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <001f01c43366$5c5658e0$6500a8c0@RICHARDJKLEIN> MIME-version: 1.0 X-Mailer: Microsoft Outlook Express 6.00.2800.1409 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_JbVirCkYyGnAb0xzgVIQMg)" Precedence: bulk X-MSMail-Priority: Normal X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 X-Virus-Scanned: Symantec AntiVirus Scan Engine X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 *** EOOH *** Date: Thu, 06 May 2004 08:33:39 -0400 From: Richie Klein Subject: Varian PV "Trips" Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-MSMail-Priority: Normal X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 X-Virus-Scanned: Symantec AntiVirus Scan Engine X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 This is a multi-part message in MIME format. --Boundary_(ID_JbVirCkYyGnAb0xzgVIQMg) Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: quoted-printable Hello. I am getting a "trip" whenever I release the enable bars on the i/r = pendant while driving the arm or complete a retract on a High Energy = Varian Clinac. It can be cleared by pressing the reset button on the = enable pcb. I get a 34 on the pendant as the fault. The "F" arm = electrocylinder backspins and I can grab the motor shaft just as I = release the enable bars and not get a "trip". I have replaced this = electrocylinder twice, the motor relay pcb, the i/r-service pcb and the = enable pcb. I have swapped the "F" and "U" arm motor contol pcbs and = cannot get it to work properly. The 5v=3D 5.2 and the +12-11.8. I would appreciate any help. Thank You, Richie Klein RS&A --Boundary_(ID_JbVirCkYyGnAb0xzgVIQMg) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: quoted-printable
Hello.
 
I am getting a "trip" whenever I = release the enable=20 bars on the i/r pendant while driving the arm or complete a = retract on=20 a High Energy Varian Clinac. It can be cleared by pressing the reset = button on=20 the enable pcb. I get a 34 on the pendant as the fault. The "F" arm=20 electrocylinder backspins and I can grab the motor shaft just as I = release the=20 enable bars and not get a "trip". I have replaced this electrocylinder = twice,=20 the motor relay pcb, the i/r-service pcb and the enable pcb. I have = swapped the=20 "F" and "U" arm motor contol pcbs and cannot get it to work properly. = The 5v=3D=20 5.2 and the +12-11.8.
I would appreciate any = help.
 
Thank You,
 
Richie Klein
RS&A
--Boundary_(ID_JbVirCkYyGnAb0xzgVIQMg)--  1,, X-Coding-System: undecided-unix Return-path: Disposition-notification-to: "James.Song" Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXA00H96WNDAG@hubbard.azu.nl>; Thu, 6 May 2004 18:33:59 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050618335614333 ; Thu, 06 May 2004 18:33:56 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA09222; Thu, 06 May 2004 18:34:09 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma009158; Thu, 06 May 2004 18:33:53 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id JAA26859 for linac-eng-list; Thu, 06 May 2004 09:24:28 -0500 (CDT) Received: from smtp.263.net (mx01.263.net.cn [211.150.96.22]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id JAA26855 for ; Thu, 06 May 2004 09:24:24 -0500 (CDT) Received: from cancer (localhost [127.0.0.1]) by smtp.263.net (Postfix) with ESMTP id B847134F7D; Thu, 06 May 2004 22:24:14 +0800 (CST) Received: from cancer (unknown [211.167.200.117]) by antispam-2 (Coremail:263(040326)) with SMTP id roAuAo1KmkBuFMh1.1 for ; Thu, 06 May 2004 22:24:16 +0800 (CST) Date: Thu, 06 May 2004 22:24:13 +0800 From: "James.Song" Subject: Re: Elekta linacs Sender: owner-linac-eng@plato.aristotle.net To: Richard.Newby@gstt.sthames.nhs.uk Cc: =?utf-8?B?5Yqg6YCf5Zmo6K6o6K6657uE?= Message-id: <006201c43375$cf5ac880$1511060a@cancer> MIME-version: 1.0 X-Mailer: Microsoft Outlook Express 6.00.2800.1106 Content-type: text/plain; charset=utf-8 Content-transfer-encoding: 8bit Precedence: bulk X-TEBIE-Originating-IP: [211.167.200.117] X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 X-MIME-Autoconverted: from base64 to 8bit by plato.aristotle.net id JAA26856 References: X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 *** EOOH *** Disposition-notification-to: "James.Song" Date: Thu, 06 May 2004 22:24:13 +0800 From: "James.Song" Subject: Re: Elekta linacs Sender: owner-linac-eng@plato.aristotle.net To: Richard.Newby@gstt.sthames.nhs.uk Cc: =?utf-8?B?5Yqg6YCf5Zmo6K6o6K6657uE?= X-TEBIE-Originating-IP: [211.167.200.117] X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 X-MIME-Autoconverted: from base64 to 8bit by plato.aristotle.net id JAA26856 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 Dear Rick: I think may be you need to setup 2R and 2T 'look-up' table.You will be founded in "Precise Treatment System Supplementary Setup and Test Manual". James.Song Engineer&MCSE Radiological Physicist Dept. of Radiation Oncology, C.A.M.S Cancer(Institute) Hospital Chinese Academy of Medical Science Office: 86-10-67781331ext8292 E-mail: jamessong@263.net ----- Original Message ----- From: To: Sent: Thursday, May 06, 2004 7:21 PM Subject: Elekta linacs > Hi Listers > > We have a problem on our linac. At gantry =0 we get a good doserate at 10MV, > however at certain gantry angles ie100 we always get a low dose interlock. > No other energies are affected. Any suggestions please, all gratefully > accepted > > Thanks > > Rick > > -- > **************************************************************************************** > Please note that the new telephone number for both Guy's and St. Thomas'is 020 7188 7188. > **************************************************************************************** > Disclaimer > **************************************************************************************** > This e-mail may contain confidential and / or privileged information. > Unless otherwise specified, the opinions expressed herein do not > necessarily represent those of Guy's and St Thomas Hospital NHS > Trust or any of its subsidiaries. If you are not the intended recipient > (or have received this e-mail in error) please notify the sender and > destroy this e-mail immediately. Any unauthorised copying, disclosure > or distribution of the material in this e-mail is strictly prohibited. > **************************************************************************************** >  1,, X-Coding-System: undecided-unix Return-path: Disposition-notification-to: "James.Song" Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXA00L9NX8DXM@hubbard.azu.nl>; Thu, 6 May 2004 18:45:52 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050618454914519 ; Thu, 06 May 2004 18:45:49 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA10463; Thu, 06 May 2004 18:46:01 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma010430; Thu, 06 May 2004 18:45:46 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id JAA27455 for linac-eng-list; Thu, 06 May 2004 09:48:15 -0500 (CDT) Received: from smtp.263.net (mx01.263.net.cn [211.150.96.22]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id JAA27451 for ; Thu, 06 May 2004 09:48:13 -0500 (CDT) Received: from cancer (localhost [127.0.0.1]) by smtp.263.net (Postfix) with ESMTP id 6BAE034EC4; Thu, 06 May 2004 22:48:10 +0800 (CST) Received: from cancer (unknown [211.167.200.117]) by antispam-2 (Coremail:263(040326)) with SMTP id oHAtAilQmkByFsh1.1 for ; Thu, 06 May 2004 22:48:11 +0800 (CST) Date: Thu, 06 May 2004 22:48:08 +0800 From: "James.Song" Subject: IMRT for Elekta Precise? Sender: owner-linac-eng@plato.aristotle.net To: =?utf-8?B?5Yqg6YCf5Zmo6K6o6K6657uE?= Message-id: <00a001c43379$270dc610$1511060a@cancer> MIME-version: 1.0 X-Mailer: Microsoft Outlook Express 6.00.2800.1106 Content-type: text/plain; charset=utf-8 Content-transfer-encoding: 8bit Precedence: bulk X-TEBIE-Originating-IP: [211.167.200.117] X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 X-MIME-Autoconverted: from base64 to 8bit by plato.aristotle.net id JAA27452 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 *** EOOH *** Disposition-notification-to: "James.Song" Date: Thu, 06 May 2004 22:48:08 +0800 From: "James.Song" Subject: IMRT for Elekta Precise? Sender: owner-linac-eng@plato.aristotle.net To: =?utf-8?B?5Yqg6YCf5Zmo6K6o6K6657uE?= X-TEBIE-Originating-IP: [211.167.200.117] X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 X-MIME-Autoconverted: from base64 to 8bit by plato.aristotle.net id JAA27452 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 Dear List: Out Hospital installed a new Elekta Precise last year.We want to doing IMRT. I import some IMRT plans from Xio and Pinnacle with Dicom-RT. During the beam on, some child-fields break down unnormal, the Precise inhibit 'MLC not Ready'! I note when two child-filelds shapes very differently (i.e. one on left-up ,next on right-down) , the MLCs and Jaws need to move a long distence, if MLCs or Jaws not stop,but beam on, then beam will be break . Which item can I adjuest? Please help me. James.Song Engineer&MCSE Radiological Physicist Dept. of Radiation Oncology, C.A.M.S Cancer(Institute) Hospital Chinese Academy of Medical Science Office: 86-10-67781331ext8292 E-mail: jamessong@263.net  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXA00LYSYG8XM@hubbard.azu.nl>; Thu, 6 May 2004 19:12:09 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050619120714921 ; Thu, 06 May 2004 19:12:07 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA13296; Thu, 06 May 2004 19:12:20 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma013277; Thu, 06 May 2004 19:11:57 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id KAA28122 for linac-eng-list; Thu, 06 May 2004 10:00:31 -0500 (CDT) Received: from mail21.nhs.uk (mail21.nhs.uk [62.6.139.215]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id KAA28118 for ; Thu, 06 May 2004 10:00:29 -0500 (CDT) Received: from [10.191.254.3] (helo=relayint2.nhs.uk) by mail21.nhs.uk with esmtp (MTC MTA) id 1BLkLv-0003S3-0B for linac-eng@plato.aristotle.net; Thu, 06 May 2004 15:59:59 +0100 Received: from relay.nhs.uk (194.62.42.142) by relayint2.nhs.uk (Syntegra-I2 7.0.008) id 409511E60011EF18 for linac-eng@plato.aristotle.net; Thu, 06 May 2004 15:59:58 +0100 Received: from mailsweeper.suht.swest.nhs.uk (194.189.32.135) by relay.nhs.uk (Syntegra-2 7.0.008) id 409A260800022167 for linac-eng@plato.aristotle.net; Thu, 06 May 2004 15:59:58 +0100 Received: from mail.suht.swest.nhs.uk (unverified) by mailsweeper.suht.swest.nhs.uk (Content Technologies SMTPRS 4.3.1) with ESMTP id for ; Thu, 06 May 2004 16:04:13 +0100 Received: from SGH-MTA by mail.suht.swest.nhs.uk with Novell_GroupWise; Thu, 06 May 2004 15:59:58 +0100 Date: Thu, 06 May 2004 15:59:08 +0100 From: John McKechnie Subject: Re: Elekta linacs Sender: owner-linac-eng@plato.aristotle.net To: Richard.Newby@gstt.sthames.nhs.uk, linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.0.2 Content-type: text/plain; charset=us-ascii Content-disposition: inline Content-transfer-encoding: 7bit Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 06 May 2004 15:59:08 +0100 From: John McKechnie Subject: Re: Elekta linacs Sender: owner-linac-eng@plato.aristotle.net To: Richard.Newby@gstt.sthames.nhs.uk, linac-eng@plato.aristotle.net Content-disposition: inline X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hi Rick, Can you see anything else changing with the drop in doserate? Gun current, steering currents, power conditions (mag I)? John John McKechnie Head of Radiotherapy Electronics Wessex Radiotherapy Centre Royal Southants Hospital Brintons Terrace (Off St. Mary's Road) Southampton SO14 OYG Tel. 023 8082 5708 >>> 06/05/2004 12:21:03 >>> Hi Listers We have a problem on our linac. At gantry =0 we get a good doserate at 10MV, however at certain gantry angles ie100 we always get a low dose interlock. No other energies are affected. Any suggestions please, all gratefully accepted Thanks Rick -- **************************************************************************************** Please note that the new telephone number for both Guy's and St. Thomas'is 020 7188 7188. **************************************************************************************** Disclaimer **************************************************************************************** This e-mail may contain confidential and / or privileged information. Unless otherwise specified, the opinions expressed herein do not necessarily represent those of Guy's and St Thomas Hospital NHS Trust or any of its subsidiaries. If you are not the intended recipient (or have received this e-mail in error) please notify the sender and destroy this e-mail immediately. Any unauthorised copying, disclosure or distribution of the material in this e-mail is strictly prohibited. **************************************************************************************** ************************************************************************************ This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. Any views or opinions presented are solely those of The author and do not necessarily represent those of the Trust unless explicitly stated otherwise. If you have received this e-mail in error please delete the e-mail and contact the Southampton University Hospitals NHS Trust Helpdesk on:- 023 80796000 This footnote also confirms that this email message has been swept by MIMEsweeper for the presence of computer viruses. ************************************************************************************  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXA0020IYX163@hubbard.azu.nl>; Thu, 6 May 2004 19:22:15 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050619221315068 ; Thu, 06 May 2004 19:22:13 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA14308; Thu, 06 May 2004 19:22:25 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma014236; Thu, 06 May 2004 19:21:52 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id KAA28647 for linac-eng-list; Thu, 06 May 2004 10:10:20 -0500 (CDT) Received: from mail21.nhs.uk (mail21.nhs.uk [62.6.139.215]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id KAA28642 for ; Thu, 06 May 2004 10:10:19 -0500 (CDT) Received: from [10.191.254.3] (helo=relayint2.nhs.uk) by mail21.nhs.uk with esmtp (MTC MTA) id 1BLkVQ-0000by-IF for linac-eng@plato.aristotle.net; Thu, 06 May 2004 16:09:48 +0100 Received: from relay.nhs.uk (194.62.42.141) by relayint2.nhs.uk (Syntegra-I2 7.0.008) id 409511E6001203DA for linac-eng@plato.aristotle.net; Thu, 06 May 2004 16:09:48 +0100 Received: from mailsweeper.suht.swest.nhs.uk (194.189.32.135) by relay.nhs.uk (Syntegra-1 7.0.008) id 409A25AB000258DD for linac-eng@plato.aristotle.net; Thu, 06 May 2004 16:09:48 +0100 Received: from mail.suht.swest.nhs.uk (unverified) by mailsweeper.suht.swest.nhs.uk (Content Technologies SMTPRS 4.3.1) with ESMTP id for ; Thu, 06 May 2004 16:14:02 +0100 Received: from SGH-MTA by mail.suht.swest.nhs.uk with Novell_GroupWise; Thu, 06 May 2004 16:09:48 +0100 Date: Thu, 06 May 2004 16:09:18 +0100 From: John McKechnie Subject: Elekta v Varian v Seimens Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.0.2 Content-type: text/plain; charset=us-ascii Content-disposition: inline Content-transfer-encoding: 7bit Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 06 May 2004 16:09:18 +0100 From: John McKechnie Subject: Elekta v Varian v Seimens Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Content-disposition: inline X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Thanks to all who replied to the request below. Some very open and honest opinions which was exactly what I was looking for. Very helpful. Thanks again, Best Regards, John Hello world, My colleagues are currently in the process of looking at the above manufacturers' linacs, MLC, Portal Imaging "and all that jazz", decision to be made in a month or so. We have Elekta experience and limited Varian engineering experience in house, but we have no Seimens Oncor experience. Any advice please, from a service, maintainability, reliability point of view? Frank opinions to me personally, away from prying corporate big brother, would be appreciated! (Not that I'm implying that we don't get the real story from the manufacturers! They're all great guys and you could trust them with your grandmother.) Best regards, John John McKechnie Head of Radiotherapy Electronics Wessex Radiotherapy Centre Royal Southants Hospital Brintons Terrace (Off St. Mary's Road) Southampton SO14 OYG Tel. 023 8082 5708 ************************************************************************************ This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. Any views or opinions presented are solely those of The author and do not necessarily represent those of the Trust unless explicitly stated otherwise. If you have received this e-mail in error please delete the e-mail and contact the Southampton University Hospitals NHS Trust Helpdesk on:- 023 80796000 This footnote also confirms that this email message has been swept by MIMEsweeper for the presence of computer viruses. ************************************************************************************  1,, X-Coding-System: undecided-unix Return-path: Disposition-notification-to: "James.Song" Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXB002ZJ0RN63@hubbard.azu.nl>; Thu, 6 May 2004 20:02:15 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050620021015702 ; Thu, 06 May 2004 20:02:10 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id UAA18883; Thu, 06 May 2004 20:02:22 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma018837; Thu, 06 May 2004 20:02:01 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id KAA00223 for linac-eng-list; Thu, 06 May 2004 10:56:21 -0500 (CDT) Received: from smtp.263.net (mx01.263.net.cn [211.150.96.22]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id KAA00219 for ; Thu, 06 May 2004 10:56:19 -0500 (CDT) Received: from cancer (localhost [127.0.0.1]) by smtp.263.net (Postfix) with ESMTP id 9242733E28; Thu, 06 May 2004 23:56:16 +0800 (CST) Received: from cancer (unknown [211.167.200.117]) by antispam-2 (Coremail:263(040326)) with SMTP id CRAwAh5gmkBnFsh1.1 for ; Thu, 06 May 2004 23:56:17 +0800 (CST) Date: Thu, 06 May 2004 23:56:13 +0800 From: "James.Song" Subject: IMRT for Elekta Precise? Sender: owner-linac-eng@plato.aristotle.net To: =?utf-8?B?5Yqg6YCf5Zmo6K6o6K6657uE?= Message-id: <011001c43382$aa52e1a0$1511060a@cancer> MIME-version: 1.0 X-Mailer: Microsoft Outlook Express 6.00.2800.1106 Content-type: text/plain; charset=utf-8 Content-transfer-encoding: 8bit Precedence: bulk X-TEBIE-Originating-IP: [211.167.200.117] X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id KAA00220 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 *** EOOH *** Disposition-notification-to: "James.Song" Date: Thu, 06 May 2004 23:56:13 +0800 From: "James.Song" Subject: IMRT for Elekta Precise? Sender: owner-linac-eng@plato.aristotle.net To: =?utf-8?B?5Yqg6YCf5Zmo6K6o6K6657uE?= X-TEBIE-Originating-IP: [211.167.200.117] X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id KAA00220 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 Dear List: Out Hospital installed a new Elekta Precise last year.We want to doing IMRT. I import some IMRT plans from Xio and Pinnacle with Dicom-RT. During the beam on, some child-fields break down unnormal, the Precise inhibit 'MLC not Ready'! I note when two child-filelds shapes very differently (i.e. one on left-up ,next on right-down) , the MLCs and Jaws need to move a long distence, if MLCs or Jaws not stop,but beam on, then beam will be break . Which item can I adjuest? Please help me. James.Song Engineer&MCSE Radiological Physicist Dept. of Radiation Oncology, C.A.M.S Cancer(Institute) Hospital Chinese Academy of Medical Science Office: 86-10-67781331ext8292 E-mail: jamessong@263.net  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXB008RL5F9PD@hubbard.azu.nl>; Thu, 6 May 2004 21:42:47 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050621424517220 ; Thu, 06 May 2004 21:42:45 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id VAA29088; Thu, 06 May 2004 21:42:57 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma029061; Thu, 06 May 2004 21:42:30 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id MAA03379 for linac-eng-list; Thu, 06 May 2004 12:49:19 -0500 (CDT) Received: from phsornt422.or.providence.org (phsor-nat2.providence.org [170.220.2.14]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id MAA03375 for ; Thu, 06 May 2004 12:49:17 -0500 (CDT) Received: from PickupDirectory by phsornt422.or.providence.org with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2653.13) id 20W9X8TZ; Thu, 06 May 2004 10:36:30 -0700 Received: from phsorcon06.or.providence.org ([170.220.78.187]) by phsornt422.or.providence.org with Microsoft SMTPSVC(5.0.2195.6713); Thu, 06 May 2004 10:36:30 -0700 Received: from phsormsg02.or.providence.org ([170.220.75.191]) by phsorcon06.or.providence.org with Microsoft SMTPSVC(5.0.2195.6713); Thu, 06 May 2004 10:36:59 -0700 Date: Thu, 06 May 2004 10:36:59 -0700 From: JamesR.Wilson@providence.org Subject: RE: Carrousel noise errors Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <0838AEB7ABB0C04481781A84D6DE7C6C19F3DA@phsormsg02.or.providence.org> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 8bit Importance: normal Precedence: bulk X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 Content-Class: urn:content-classes:message Thread-Topic: Carrousel noise errors thread-index: AcQw3DNMZrDKE+FGSUiTC9AQY4N3VgCsqdGQ X-OriginalArrivalTime: 06 May 2004 17:36:59.0861 (UTC) FILETIME=[BC2D5050:01C43390] X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id MAA03376 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 06 May 2004 10:36:59 -0700 From: JamesR.Wilson@providence.org Subject: RE: Carrousel noise errors Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Importance: normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 Content-Class: urn:content-classes:message Thread-Topic: Carrousel noise errors thread-index: AcQw3DNMZrDKE+FGSUiTC9AQY4N3VgCsqdGQ X-OriginalArrivalTime: 06 May 2004 17:36:59.0861 (UTC) FILETIME=[BC2D5050:01C43390] X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id MAA03376 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f I am having problems with 1 of our Varian 2100EX accelerators as well. The operators report that 3-5 times a day they get carr/foil interlocks and have to reprogram the unit to get it to clear. For some weeks they have been telling me it occurs at all angles and is happening in photon only modes (6 and 23MV). Recently they say it failed in electrons as well. I cannot duplicate the problem. Our local rep says the only thing that can be done is to wait until it gets a lot worse so we can determine the cause. Apparently there is no error log that can assist with this problem. I cannot look at the error codes because they clear the fault and continue to treat. Any suggestions?? Thanks, Jim Wilson Providence Health System Portland, OR -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net] On Behalf Of Caunt, Peter Sent: Sunday, May 02, 2004 11:07 PM To: Linac Eng (E-mail) Subject: Carrousel noise errors Listmembers, I am seeking assistance on an intermittent problem that causes carrousel failures on a two-year-old C3 2100CD, one of those problems not wished upon anyone. Error occurs in the afternoon at around the same time but on occasional days. Error code 99 - noise problems Carrousel lubricated and in good condition. BCD switches changed and adjusted, fault still exists. Not the Carrousel/Bmag board. Port lock pin homes and operates satisfactorily-air pressure, solenoid OK. Wondering if anyone has chased this down before, any expertise on this problem greatly appreciated. Many thanks for the opportunity to raise the question. Regards, Peter Caunt Radiotherapy Department Canberra, Australia. "Important: This transmission is intended only for the use of the addressee and may contain confidential or legally privileged information. If you are not the intended recipient, you are notified that any use or dissemination of this communication is strictly prohibited. If you receive this transmission in error please notify the author immediately and delete all copies of this transmission." ------------------------------------------------------------------------ ---- ------------------------------------------ This email, and any attachments, may be confidential and also privileged. If you are not the intended recipient: Please notify the sender and delete all copies of this transmission along with any attachments immediately. You should not copy or use it for any purpose, nor disclose its contents to any other person. ------------------------------------------------------------------------ ---- ------------------------------------------ DISCLAIMER: This message is intended for the sole use of the addressee, and may contain information that is privileged, confidential and exempt from disclosure under applicable law. If you are not the addressee you are hereby notified that you may not use, copy, disclose, or distribute to anyone the message or any information contained in the message. If you have received this message in error, please immediately advise the sender by reply email and delete this message.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXB00F2R8D6UK@hubbard.azu.nl>; Thu, 6 May 2004 22:46:20 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050622461718122 ; Thu, 06 May 2004 22:46:17 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id WAA05620; Thu, 06 May 2004 22:46:30 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma005576; Thu, 06 May 2004 22:46:20 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id NAA04198 for linac-eng-list; Thu, 06 May 2004 13:56:35 -0500 (CDT) Received: from andromeda.mcvh-vcu.edu (nethawk.mcvh-vcu.edu [208.0.115.232]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id NAA04193; Thu, 06 May 2004 13:56:33 -0500 (CDT) Received: from mcv-hub.mcvh-vcu.edu ([206.105.121.24]) by andromeda.mcvh-vcu.edu (8.12.10/8.12.10) with ESMTP id i46Itg8w017654; Thu, 06 May 2004 14:55:42 -0400 Date: Thu, 06 May 2004 14:56:03 -0400 From: Chris Bartee Subject: RE: Carrousel noise errors In-reply-to: <0838AEB7ABB0C04481781A84D6DE7C6C19F3DA@phsormsg02.or.providence.org> Sender: owner-linac-eng@plato.aristotle.net To: JamesR.Wilson@providence.org Cc: linac-eng@plato.aristotle.net, owner-linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Lotus Notes Release 6.5.1 January 21, 2004 Content-type: text/plain; charset=US-ASCII Precedence: bulk X-MIMETrack: Serialize by Router on MCV-Hub/MCVH(Release 6.5.1|January 21, 2004) at 05/06/2004 02:56:50 PM X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 06 May 2004 14:56:03 -0400 From: Chris Bartee Subject: RE: Carrousel noise errors In-reply-to: <0838AEB7ABB0C04481781A84D6DE7C6C19F3DA@phsormsg02.or.providence.org> Sender: owner-linac-eng@plato.aristotle.net To: JamesR.Wilson@providence.org Cc: linac-eng@plato.aristotle.net, owner-linac-eng@plato.aristotle.net X-MIMETrack: Serialize by Router on MCV-Hub/MCVH(Release 6.5.1|January 21, 2004) at 05/06/2004 02:56:50 PM X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f One machine I know of started to do the same thing. Intermittent carr/foil intlk. T/s I found one of the cable rubbed through to conductor by the back water rotary joint hose clamps. This was on a machine that was a couple years old. It wouldn't hurt to look. Just a thought, Chris Bartee NOTE: The information contained in this message may be privileged and confidential and protected from disclosure. If the reader of this message is not the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please notify us immediately by replying to the message and deleting it from your computer. -------------------------------------- VCU Health System http://www.vcuhealth.org NOTE: The information contained in this message may be privileged and confidential and protected from disclosure. If the reader of this message is not the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please notify us immediately by replying to the message and deleting it from your computer. -------------------------------------- VCU Health System http://www.vcuhealth.org  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXB00FDZ9NGUK@hubbard.azu.nl>; Thu, 6 May 2004 23:14:05 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050623140318465 ; Thu, 06 May 2004 23:14:03 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id XAA08130; Thu, 06 May 2004 23:14:16 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma008117; Thu, 06 May 2004 23:13:56 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id OAA05261 for linac-eng-list; Thu, 06 May 2004 14:24:39 -0500 (CDT) Received: from twister.bcentralhost.com (twister.bcentralhost.com [205.158.155.24]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id OAA05257 for ; Thu, 06 May 2004 14:24:38 -0500 (CDT) Received: from RANDY (c-24-15-225-233.client.comcast.net [24.15.225.233]) by twister.bcentralhost.com id PAA08831; Thu, 06 May 2004 15:24:34 -0400 (EDT) Date: Thu, 06 May 2004 14:21:39 -0500 From: "Carl \"Randy\" La Foone" Subject: RE: Carrousel noise errors In-reply-to: <0838AEB7ABB0C04481781A84D6DE7C6C19F3DA@phsormsg02.or.providence.org> Sender: owner-linac-eng@plato.aristotle.net To: JamesR.Wilson@providence.org, linac-eng@plato.aristotle.net Reply-to: randy@acceletronics.com Message-id: MIME-version: 1.0 X-Mailer: Microsoft Outlook IMO, Build 9.0.6604 (9.0.2911.0) Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7bit Importance: Normal Precedence: bulk X-MSMail-Priority: Normal X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 (Normal) *** EOOH *** Date: Thu, 06 May 2004 14:21:39 -0500 From: "Carl \"Randy\" La Foone" Subject: RE: Carrousel noise errors In-reply-to: <0838AEB7ABB0C04481781A84D6DE7C6C19F3DA@phsormsg02.or.providence.org> Sender: owner-linac-eng@plato.aristotle.net To: JamesR.Wilson@providence.org, linac-eng@plato.aristotle.net Reply-to: randy@acceletronics.com Importance: Normal X-MSMail-Priority: Normal X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 (Normal) Well, we've had a machine in the area with inexplicable carr/foil faults also. problem ended up being a loose carrousel, need to pull the head to access the bolts that secure it. appears the loctite may not have held. Randy -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of JamesR.Wilson@providence.org Sent: Thursday, May 06, 2004 12:37 PM To: linac-eng@plato.aristotle.net Subject: RE: Carrousel noise errors I am having problems with 1 of our Varian 2100EX accelerators as well. The operators report that 3-5 times a day they get carr/foil interlocks and have to reprogram the unit to get it to clear. For some weeks they have been telling me it occurs at all angles and is happening in photon only modes (6 and 23MV). Recently they say it failed in electrons as well. I cannot duplicate the problem. Our local rep says the only thing that can be done is to wait until it gets a lot worse so we can determine the cause. Apparently there is no error log that can assist with this problem. I cannot look at the error codes because they clear the fault and continue to treat. Any suggestions?? Thanks, Jim Wilson Providence Health System Portland, OR -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net] On Behalf Of Caunt, Peter Sent: Sunday, May 02, 2004 11:07 PM To: Linac Eng (E-mail) Subject: Carrousel noise errors Listmembers, I am seeking assistance on an intermittent problem that causes carrousel failures on a two-year-old C3 2100CD, one of those problems not wished upon anyone. Error occurs in the afternoon at around the same time but on occasional days. Error code 99 - noise problems Carrousel lubricated and in good condition. BCD switches changed and adjusted, fault still exists. Not the Carrousel/Bmag board. Port lock pin homes and operates satisfactorily-air pressure, solenoid OK. Wondering if anyone has chased this down before, any expertise on this problem greatly appreciated. Many thanks for the opportunity to raise the question. Regards, Peter Caunt Radiotherapy Department Canberra, Australia. "Important: This transmission is intended only for the use of the addressee and may contain confidential or legally privileged information. If you are not the intended recipient, you are notified that any use or dissemination of this communication is strictly prohibited. If you receive this transmission in error please notify the author immediately and delete all copies of this transmission." ------------------------------------------------------------------------ ---- ------------------------------------------ This email, and any attachments, may be confidential and also privileged. If you are not the intended recipient: Please notify the sender and delete all copies of this transmission along with any attachments immediately. You should not copy or use it for any purpose, nor disclose its contents to any other person. ------------------------------------------------------------------------ ---- ------------------------------------------ DISCLAIMER: This message is intended for the sole use of the addressee, and may contain information that is privileged, confidential and exempt from disclosure under applicable law. If you are not the addressee you are hereby notified that you may not use, copy, disclose, or distribute to anyone the message or any information contained in the message. If you have received this message in error, please immediately advise the sender by reply email and delete this message.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXB00EXUAMVV9@hubbard.azu.nl>; Thu, 6 May 2004 23:35:20 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050623351818745 ; Thu, 06 May 2004 23:35:18 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id XAA10308; Thu, 06 May 2004 23:35:31 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma010283; Thu, 06 May 2004 23:35:25 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id OAA05719 for linac-eng-list; Thu, 06 May 2004 14:45:13 -0500 (CDT) Received: from email.med.yale.edu (email.med.yale.edu [130.132.232.16]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id OAA05714; Thu, 06 May 2004 14:45:12 -0500 (CDT) Received: from yale.edu (vitalip.med.yale.edu [130.132.213.170]) by email.med.yale.edu (PMDF V6.2-X17 #30873) with ESMTP id <0HXB0SOHG5J7D5@email.med.yale.edu>; Thu, 06 May 2004 15:45:09 -0400 (EDT) Date: Thu, 06 May 2004 15:46:23 -0400 From: Peter Vitali Subject: Re: pacemakers Sender: owner-linac-eng@plato.aristotle.net To: Chris Bartee Cc: "Maddox, Buford J" , "'LINAC-ENG@PLATO.ARISTOTLE.net'" , owner-linac-eng@plato.aristotle.net Message-id: <409A95C2.268BB7A3@yale.edu> MIME-version: 1.0 X-Mailer: Mozilla 4.76 (Macintosh; U; PPC) Content-type: text/plain; charset=us-ascii; x-mac-type=54455854; x-mac-creator=4D4F5353 Content-transfer-encoding: 7bit Precedence: bulk X-Accept-Language: en References: X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 06 May 2004 15:46:23 -0400 From: Peter Vitali Subject: Re: pacemakers Sender: owner-linac-eng@plato.aristotle.net To: Chris Bartee Cc: "Maddox, Buford J" , "'LINAC-ENG@PLATO.ARISTOTLE.net'" , owner-linac-eng@plato.aristotle.net X-Accept-Language: en X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Chris: AAPM has a paper out on pacemakers. Ask your physicist to get you a copy. I do not remember the name but I recall seeing questions on the Med Physics List Server about it. Pete Vitali  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXB00MXRF7YKP@hubbard.azu.nl>; Fri, 7 May 2004 01:14:24 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050701142120123 ; Fri, 07 May 2004 01:14:21 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id BAA19475; Fri, 07 May 2004 01:14:33 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma019448; Fri, 07 May 2004 01:14:20 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id QAA11099 for linac-eng-list; Thu, 06 May 2004 16:07:25 -0500 (CDT) Received: from silver_spring.mrccnet.com (e4.c6b7d1.client.atlantech.net [209.183.198.228]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id QAA11095 for ; Thu, 06 May 2004 16:07:23 -0500 (CDT) Received: by silver_spring.mrccnet.com with Internet Mail Service (5.5.2653.19) id ; Thu, 06 May 2004 17:05:58 -0400 Date: Thu, 06 May 2004 17:05:57 -0400 From: Phil Shoop Subject: Linac Engineer Position Open Sender: owner-linac-eng@plato.aristotle.net To: "'linac-eng@plato.aristotle.net'" Message-id: <530DF454AD28D511A9FF0002B30A190D3DACE4@silver_spring.mrccnet.com> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 06 May 2004 17:05:57 -0400 From: Phil Shoop Subject: Linac Engineer Position Open Sender: owner-linac-eng@plato.aristotle.net To: "'linac-eng@plato.aristotle.net'" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Maryland Regional Cancer Care, a partnership with Holy Cross Health and Adventist Health Care, has a position open for a linac engineer. We currently have 5 centers in Maryland and are local to the Washington DC metropolitan area. Staffing for these centers is through Radiation Management Associates (RMA). We currently have : 1 Varian 2100EX- Silhouette with MMLC and Portal Vision. 1 Varian 2100EX with MMLC and Portal Vision (new under warranty) 1 Varian 2100C with Dynart 3D-Line MLC 1 Varian 2100C 1 Siemens 6740 1 Varian 600C with Dynart 3D-Line MLC 3 Varian Ximatrons 1 GE HiSpeed Nxi CT Simulator 2 Nucletron HDR units All centers are connected using T1 networking and the Impac R&V system. The successful candidate must have a thorough knowledge of repair and maintenance of radiotherapy equipment. Military or electronics degree or equivalent experience is required. The candidate should have knowledge and experience using testing and scanning equipment. Minimum of 3 - 5 years experience is required. OEM training is desirable. Knowledge of computers and networking along with the Impac R&V system is a plus although not required. Duties include working with another engineer on repair, maintenance and PMI of radiotherapy equipment. Other duties include but are not limited to assisting the Physics staff with annual calibrations and scanning. We are an EOE, offering competitive salary with an excellent benefits package. Please contact: Phil Shoop at 301-919-2972 or email pjshoop@mrccnet.com or Betty Cameron at 301-681-4422 or email bcameron@mrccnet.com or Arnie Able email aable@mrccnet.com . Please visit out website at www.marylandcancercare.net . The PHI (Protected Health Information) contained in this FAX/Email is HIGHLY CONFIDENTIAL. It is intended for the exclusive use of the addressee. It is to be used only to aid in providing specific healthcare services to this patient. Any other use is a violation of Federal Law (HIPAA) and will be reported as such.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXB007UUK2F5F@hubbard.azu.nl>; Fri, 7 May 2004 02:59:05 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050702590321151 ; Fri, 07 May 2004 02:59:03 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id CAA27388; Fri, 07 May 2004 02:59:16 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma027372; Fri, 07 May 2004 02:58:58 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id SAA13198 for linac-eng-list; Thu, 06 May 2004 18:12:04 -0500 (CDT) Received: from PHSEXCHICO.MGH.HARVARD.EDU (phsexchico.mgh.harvard.edu [132.183.126.50]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id SAA13194 for ; Thu, 06 May 2004 18:12:02 -0500 (CDT) Received: by phsexchico.mgh.harvard.edu with Internet Mail Service (5.5.2657.72) id ; Thu, 06 May 2004 19:07:57 -0400 Date: Thu, 06 May 2004 19:07:56 -0400 From: "Maddox, Buford J" Subject: RE: Carrousel noise errors Sender: owner-linac-eng@plato.aristotle.net To: "'JamesR.Wilson@providence.org'" , linac-eng@plato.aristotle.net Message-id: <36298D09ED1AD311B4DC0008C7F4D4E111466432@phsexch6.partners.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 06 May 2004 19:07:56 -0400 From: "Maddox, Buford J" Subject: RE: Carrousel noise errors Sender: owner-linac-eng@plato.aristotle.net To: "'JamesR.Wilson@providence.org'" , linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f I always tell them that they will suffer less if they help. I explain that the information is needed, and must be gathered when it happens, to diagnose the fault and end everyone's aggravation sooner. All they have to do to start with is go into the room and look at the LEDs. Our therapists are pretty helpful once they understand the need for info, and start letting us know when new noises appear, etc, if we stand around for a few minutes occasionally. Typically we get BTW, or Just so you know, etc. Procedure for therapists: Raise your right hand. You are now appointed chief detectives on the LINAC. Jerry -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of JamesR.Wilson@providence.org Sent: Thursday, May 06, 2004 1:37 PM To: linac-eng@plato.aristotle.net Subject: RE: Carrousel noise errors I am having problems with 1 of our Varian 2100EX accelerators as well. The operators report that 3-5 times a day they get carr/foil interlocks and have to reprogram the unit to get it to clear. For some weeks they have been telling me it occurs at all angles and is happening in photon only modes (6 and 23MV). Recently they say it failed in electrons as well. I cannot duplicate the problem. Our local rep says the only thing that can be done is to wait until it gets a lot worse so we can determine the cause. Apparently there is no error log that can assist with this problem. I cannot look at the error codes because they clear the fault and continue to treat. Any suggestions?? Thanks, Jim Wilson Providence Health System Portland, OR -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net] On Behalf Of Caunt, Peter Sent: Sunday, May 02, 2004 11:07 PM To: Linac Eng (E-mail) Subject: Carrousel noise errors Listmembers, I am seeking assistance on an intermittent problem that causes carrousel failures on a two-year-old C3 2100CD, one of those problems not wished upon anyone. Error occurs in the afternoon at around the same time but on occasional days. Error code 99 - noise problems Carrousel lubricated and in good condition. BCD switches changed and adjusted, fault still exists. Not the Carrousel/Bmag board. Port lock pin homes and operates satisfactorily-air pressure, solenoid OK. Wondering if anyone has chased this down before, any expertise on this problem greatly appreciated. Many thanks for the opportunity to raise the question. Regards, Peter Caunt Radiotherapy Department Canberra, Australia. "Important: This transmission is intended only for the use of the addressee and may contain confidential or legally privileged information. If you are not the intended recipient, you are notified that any use or dissemination of this communication is strictly prohibited. If you receive this transmission in error please notify the author immediately and delete all copies of this transmission." ------------------------------------------------------------------------ ---- ------------------------------------------ This email, and any attachments, may be confidential and also privileged. If you are not the intended recipient: Please notify the sender and delete all copies of this transmission along with any attachments immediately. You should not copy or use it for any purpose, nor disclose its contents to any other person. ------------------------------------------------------------------------ ---- ------------------------------------------ DISCLAIMER: This message is intended for the sole use of the addressee, and may contain information that is privileged, confidential and exempt from disclosure under applicable law. If you are not the addressee you are hereby notified that you may not use, copy, disclose, or distribute to anyone the message or any information contained in the message. If you have received this message in error, please immediately advise the sender by reply email and delete this message.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXB00LRJTM74Y@hubbard.azu.nl>; Fri, 7 May 2004 06:25:21 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050706251923203 ; Fri, 07 May 2004 06:25:19 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id GAA13043; Fri, 07 May 2004 06:25:31 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma013035; Fri, 07 May 2004 06:25:26 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id VAA17544 for linac-eng-list; Thu, 06 May 2004 21:35:55 -0500 (CDT) Received: from mail.tenethealth.com (mail1.tenethealth.com [199.222.14.6]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id VAA17540 for ; Thu, 06 May 2004 21:35:53 -0500 (CDT) Received: from tenhdcthvscan01.tenethealth.net ([172.18.167.160]) by mail.tenethealth.com (8.11.6/8.11.6) with SMTP id i472ZJ000780; Thu, 06 May 2004 21:35:19 -0500 Received: from tenhdcthemx51.tenethealth.net(172.18.167.215) by tenhdcthvscan01.tenethealth.net via csmap id abf1cd88_9f97_11d8_80fb_0002b3d786fe_14068; Thu, 06 May 2004 14:57:58 -0500 (CDT) Received: from tenbmcthemx01.tenethealth.net ([10.30.2.48]) by tenhdcthemx51.tenethealth.net with Microsoft SMTPSVC(5.0.2195.6713); Thu, 06 May 2004 14:57:11 -0500 Date: Thu, 06 May 2004 14:57:00 -0500 From: "Kyle, John" Subject: RE: Carrousel noise errors Sender: owner-linac-eng@plato.aristotle.net To: JamesR.Wilson@providence.org, linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 8bit Precedence: bulk X-MimeOLE: Produced By Microsoft Exchange V6.0.6249.0 content-class: urn:content-classes:message Thread-Topic: Carrousel noise errors Thread-Index: AcQw3DNMZrDKE+FGSUiTC9AQY4N3VgCsqdGQAAUd9NA= X-OriginalArrivalTime: 06 May 2004 19:57:11.0038 (UTC) FILETIME=[51A111E0:01C433A4] X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id VAA17541 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 06 May 2004 14:57:00 -0500 From: "Kyle, John" Subject: RE: Carrousel noise errors Sender: owner-linac-eng@plato.aristotle.net To: JamesR.Wilson@providence.org, linac-eng@plato.aristotle.net X-MimeOLE: Produced By Microsoft Exchange V6.0.6249.0 content-class: urn:content-classes:message Thread-Topic: Carrousel noise errors Thread-Index: AcQw3DNMZrDKE+FGSUiTC9AQY4N3VgCsqdGQAAUd9NA= X-OriginalArrivalTime: 06 May 2004 19:57:11.0038 (UTC) FILETIME=[51A111E0:01C433A4] X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id VAA17541 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f The next time it happens have them go in and look at the error on the Auxiliary electronics and write it down. You may be able to get an idea from that. John Kyle Coordinator Technical Support Services Brookwood Medical Center 205-877-1092 -----Original Message----- From: JamesR.Wilson@providence.org [mailto:JamesR.Wilson@providence.org] Sent: Thursday, May 06, 2004 12:37 PM To: linac-eng@plato.aristotle.net Subject: RE: Carrousel noise errors I am having problems with 1 of our Varian 2100EX accelerators as well. The operators report that 3-5 times a day they get carr/foil interlocks and have to reprogram the unit to get it to clear. For some weeks they have been telling me it occurs at all angles and is happening in photon only modes (6 and 23MV). Recently they say it failed in electrons as well. I cannot duplicate the problem. Our local rep says the only thing that can be done is to wait until it gets a lot worse so we can determine the cause. Apparently there is no error log that can assist with this problem. I cannot look at the error codes because they clear the fault and continue to treat. Any suggestions?? Thanks, Jim Wilson Providence Health System Portland, OR -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net] On Behalf Of Caunt, Peter Sent: Sunday, May 02, 2004 11:07 PM To: Linac Eng (E-mail) Subject: Carrousel noise errors Listmembers, I am seeking assistance on an intermittent problem that causes carrousel failures on a two-year-old C3 2100CD, one of those problems not wished upon anyone. Error occurs in the afternoon at around the same time but on occasional days. Error code 99 - noise problems Carrousel lubricated and in good condition. BCD switches changed and adjusted, fault still exists. Not the Carrousel/Bmag board. Port lock pin homes and operates satisfactorily-air pressure, solenoid OK. Wondering if anyone has chased this down before, any expertise on this problem greatly appreciated. Many thanks for the opportunity to raise the question. Regards, Peter Caunt Radiotherapy Department Canberra, Australia. "Important: This transmission is intended only for the use of the addressee and may contain confidential or legally privileged information. If you are not the intended recipient, you are notified that any use or dissemination of this communication is strictly prohibited. If you receive this transmission in error please notify the author immediately and delete all copies of this transmission." ------------------------------------------------------------------------ ---- ------------------------------------------ This email, and any attachments, may be confidential and also privileged. If you are not the intended recipient: Please notify the sender and delete all copies of this transmission along with any attachments immediately. You should not copy or use it for any purpose, nor disclose its contents to any other person. ------------------------------------------------------------------------ ---- ------------------------------------------ DISCLAIMER: This message is intended for the sole use of the addressee, and may contain information that is privileged, confidential and exempt from disclosure under applicable law. If you are not the addressee you are hereby notified that you may not use, copy, disclose, or distribute to anyone the message or any information contained in the message. If you have received this message in error, please immediately advise the sender by reply email and delete this message.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXB0021AV45N8@hubbard.azu.nl>; Fri, 7 May 2004 06:57:44 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050706574123554 ; Fri, 07 May 2004 06:57:41 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id GAA15525; Fri, 07 May 2004 06:57:53 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma015501; Fri, 07 May 2004 06:57:31 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id WAA18597 for linac-eng-list; Thu, 06 May 2004 22:26:45 -0500 (CDT) Received: from gondor.dpa.act.gov.au (gondor.dpa.act.gov.au [136.153.2.50]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id WAA18593 for ; Thu, 06 May 2004 22:26:43 -0500 (CDT) Received: (from smap@localhost) by gondor.dpa.act.gov.au (8.11.1/8.11.1) id i473Qd115609 for ; Fri, 07 May 2004 13:26:39 +1000 (EST) Received: from unknown(10.226.2.7) by gondor via smap (V5.5) id xma015309; Fri, 07 May 2004 13:26:13 +1000 Received: by cal007.dpa.act.gov.au with Internet Mail Service (5.5.2657.72) id ; Fri, 07 May 2004 13:26:13 +1000 Date: Fri, 07 May 2004 13:26:13 +1000 From: "Caunt, Peter" Subject: Linac Down times Sender: owner-linac-eng@plato.aristotle.net To: "Linac Eng (E-mail)" Message-id: <2FC7DBCD6D6AD611AD7B0090278CABAEE79E84@CAL030> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 07 May 2004 13:26:13 +1000 From: "Caunt, Peter" Subject: Linac Down times Sender: owner-linac-eng@plato.aristotle.net To: "Linac Eng (E-mail)" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Dear Listmembers, If Clinac "uptime" is considered in percentage terms as follows : Available treatment time - Unavailable treatment time X 100 Available treatment time 1 Then, is there a figure that the industry would consider as being a "reasonable" norm ?? Looking forward to the comments. Regards, Peter Caunt Radiation Oncology Canberra, Australia. "Important: This transmission is intended only for the use of the addressee and may contain confidential or legally privileged information. If you are not the intended recipient, you are notified that any use or dissemination of this communication is strictly prohibited. If you receive this transmission in error please notify the author immediately and delete all copies of this transmission." ---------------------------------------------------------------------------- ------------------------------------------ This email, and any attachments, may be confidential and also privileged. If you are not the intended recipient: Please notify the sender and delete all copies of this transmission along with any attachments immediately. You should not copy or use it for any purpose, nor disclose its contents to any other person. ---------------------------------------------------------------------------- ------------------------------------------  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXD00AP864PPL@hubbard.azu.nl>; Fri, 7 May 2004 23:53:14 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050723531313962 ; Fri, 07 May 2004 23:53:13 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id XAA01591; Fri, 07 May 2004 23:53:25 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma001582; Fri, 07 May 2004 23:53:10 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id OAA08096 for linac-eng-list; Fri, 07 May 2004 14:54:46 -0500 (CDT) Received: from cwav01.cw.bc.ca (mail2.cw.bc.ca [207.23.159.180]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id OAA08086 for ; Fri, 07 May 2004 14:54:44 -0500 (CDT) Received: From server17.bccancer.bc.ca ([205.233.164.254]) by cwav01.cw.bc.ca (WebShield SMTP v4.5 MR1a); id 1083959605779; Fri, 07 May 2004 12:53:25 -0700 Received: by SERVER17 with Internet Mail Service (5.5.2653.19) id ; Fri, 07 May 2004 12:51:32 -0700 Date: Fri, 07 May 2004 12:56:44 -0700 From: Denny Yu Subject: RE: Elekta linacs Sender: owner-linac-eng@plato.aristotle.net To: "'Richard.Newby@gstt.sthames.nhs.uk'" , linac-eng@plato.aristotle.net Message-id: <6BAF4D075F07D411B30900508B94CBA012B03A9C@SERVER20> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_cQSLJSjnoHozpmnmmUvihA)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 07 May 2004 12:56:44 -0700 From: Denny Yu Subject: RE: Elekta linacs Sender: owner-linac-eng@plato.aristotle.net To: "'Richard.Newby@gstt.sthames.nhs.uk'" , linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_cQSLJSjnoHozpmnmmUvihA) Content-type: text/plain; charset=iso-8859-1 If the does rate drop is gantry angle depending, but only happens on one energy, it might not be something loosen inside mechanically, my guess. I would print a record on the Gun Servo , AFC pages when the D/R is running normally and compare them to the values of low d/r records. Hopefully you could spot something very different. Good Luck. Denny Yu Fraser Valley Cancer Center Surrey B.C. Canada -----Original Message----- From: Richard.Newby@gstt.sthames.nhs.uk [mailto:Richard.Newby@gstt.sthames.nhs.uk] Sent: Thursday, May 06, 2004 4:21 AM To: linac-eng@plato.aristotle.net Subject: Elekta linacs Hi Listers We have a problem on our linac. At gantry =0 we get a good doserate at 10MV, however at certain gantry angles ie100 we always get a low dose interlock. No other energies are affected. Any suggestions please, all gratefully accepted Thanks Rick -- **************************************************************************** ************ Please note that the new telephone number for both Guy's and St. Thomas'is 020 7188 7188. **************************************************************************** ************ Disclaimer **************************************************************************** ************ This e-mail may contain confidential and / or privileged information. Unless otherwise specified, the opinions expressed herein do not necessarily represent those of Guy's and St Thomas Hospital NHS Trust or any of its subsidiaries. If you are not the intended recipient (or have received this e-mail in error) please notify the sender and destroy this e-mail immediately. Any unauthorised copying, disclosure or distribution of the material in this e-mail is strictly prohibited. **************************************************************************** ************ --Boundary_(ID_cQSLJSjnoHozpmnmmUvihA) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: quoted-printable RE: Elekta linacs

If the does rate drop is gantry angle depending, but = only happens on one energy, it might not be something loosen inside = mechanically, my guess.

I would print a record on the Gun Servo , AFC pages = when the D/R is running normally and compare them to the values of low = d/r records. Hopefully you could spot something very different.  =

Good Luck.

Denny Yu
Fraser Valley Cancer Center
Surrey B.C. Canada

-----Original Message-----
From: Richard.Newby@gstt.sthames.nhs.uk
[mailto:Richard.Newby@g= stt.sthames.nhs.uk]
Sent: Thursday, May 06, 2004 4:21 AM
To: linac-eng@plato.aristotle.net
Subject: Elekta linacs


Hi Listers

We have a problem on our linac. At gantry =3D0 we get = a good doserate at 10MV,
however at certain gantry angles ie100 we always get = a low dose interlock.
No other energies are affected. Any suggestions = please, all gratefully
accepted

Thanks

Rick

--
***************************************************************= *************************
Please note that the new telephone number for both = Guy's and St. Thomas'is 020 7188 7188.
***************************************************************= *************************
Disclaimer
***************************************************************= *************************
This e-mail may contain confidential and / or = privileged information.
Unless otherwise specified, the opinions expressed = herein do not
necessarily represent those of Guy's and St Thomas = Hospital NHS
Trust or any of its subsidiaries. If you are not the = intended recipient
(or have received this e-mail in error) please = notify the sender and
destroy this e-mail immediately. Any unauthorised = copying, disclosure
or distribution of the material in this e-mail is = strictly prohibited.
***************************************************************= *************************

--Boundary_(ID_cQSLJSjnoHozpmnmmUvihA)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXD00KH2CRDBF@hubbard.azu.nl>; Sat, 8 May 2004 02:16:28 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004050802162515473 ; Sat, 08 May 2004 02:16:25 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id CAA12037; Sat, 08 May 2004 02:16:38 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma012028; Sat, 08 May 2004 02:16:26 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id RAA12717 for linac-eng-list; Fri, 07 May 2004 17:23:30 -0500 (CDT) Received: from phsornt424.or.providence.org (phsor-nat2.providence.org [170.220.2.14]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id RAA12713 for ; Fri, 07 May 2004 17:23:28 -0500 (CDT) Received: from PickupDirectory by phsornt424.or.providence.org with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2653.13) id JL6GG0AK; Fri, 07 May 2004 15:24:13 -0700 Received: from phsorcon06.or.providence.org ([170.220.78.187]) by phsornt424.or.providence.org with Microsoft SMTPSVC(5.0.2195.2966); Fri, 07 May 2004 15:24:12 -0700 Received: from phsormsg02.or.providence.org ([170.220.75.191]) by phsorcon06.or.providence.org with Microsoft SMTPSVC(5.0.2195.6713); Fri, 07 May 2004 15:22:04 -0700 Date: Fri, 07 May 2004 15:22:04 -0700 From: JamesR.Wilson@providence.org Subject: FW: Carrousel noise errors Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <0838AEB7ABB0C04481781A84D6DE7C6C19F3DD@phsormsg02.or.providence.org> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 8bit Importance: normal Precedence: bulk X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 Content-Class: urn:content-classes:message Thread-Topic: Carrousel noise errors thread-index: AcQw3DNMZrDKE+FGSUiTC9AQY4N3VgCsqdGQADyGZ7A= X-OriginalArrivalTime: 07 May 2004 22:22:04.0389 (UTC) FILETIME=[B9AEE950:01C43481] X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id RAA12714 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 07 May 2004 15:22:04 -0700 From: JamesR.Wilson@providence.org Subject: FW: Carrousel noise errors Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Importance: normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 Content-Class: urn:content-classes:message Thread-Topic: Carrousel noise errors thread-index: AcQw3DNMZrDKE+FGSUiTC9AQY4N3VgCsqdGQADyGZ7A= X-OriginalArrivalTime: 07 May 2004 22:22:04.0389 (UTC) FILETIME=[B9AEE950:01C43481] X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id RAA12714 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f I took the suggestion of a couple of our colleagues and propped the Aux door open and had the tech's read the error codes. They came up with 2 F7 codes for 23X, 2 B1,B9 (switching back and forth) for 6X and B3 for a 6X Portal Vision error. I have not figured out how to decode these as yet. The data book page for the PCB does not seem to list these as such. Any further input would be appreciated. Thanks, Jim -----Original Message----- From: Wilson, Jim Sent: Thursday, May 06, 2004 10:37 AM To: Linac Eng (E-mail) Subject: RE: Carrousel noise errors I am having problems with 1 of our Varian 2100EX accelerators as well. The operators report that 3-5 times a day they get carr/foil interlocks and have to reprogram the unit to get it to clear. For some weeks they have been telling me it occurs at all angles and is happening in photon only modes (6 and 23MV). Recently they say it failed in electrons as well. I cannot duplicate the problem. Our local rep says the only thing that can be done is to wait until it gets a lot worse so we can determine the cause. Apparently there is no error log that can assist with this problem. I cannot look at the error codes because they clear the fault and continue to treat. Any suggestions?? Thanks, Jim Wilson Providence Health System Portland, OR -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net] On Behalf Of Caunt, Peter Sent: Sunday, May 02, 2004 11:07 PM To: Linac Eng (E-mail) Subject: Carrousel noise errors Listmembers, I am seeking assistance on an intermittent problem that causes carrousel failures on a two-year-old C3 2100CD, one of those problems not wished upon anyone. Error occurs in the afternoon at around the same time but on occasional days. Error code 99 - noise problems Carrousel lubricated and in good condition. BCD switches changed and adjusted, fault still exists. Not the Carrousel/Bmag board. Port lock pin homes and operates satisfactorily-air pressure, solenoid OK. Wondering if anyone has chased this down before, any expertise on this problem greatly appreciated. Many thanks for the opportunity to raise the question. Regards, Peter Caunt Radiotherapy Department Canberra, Australia. "Important: This transmission is intended only for the use of the addressee and may contain confidential or legally privileged information. If you are not the intended recipient, you are notified that any use or dissemination of this communication is strictly prohibited. If you receive this transmission in error please notify the author immediately and delete all copies of this transmission." ------------------------------------------------------------------------ ---- ------------------------------------------ This email, and any attachments, may be confidential and also privileged. If you are not the intended recipient: Please notify the sender and delete all copies of this transmission along with any attachments immediately. You should not copy or use it for any purpose, nor disclose its contents to any other person. ------------------------------------------------------------------------ ---- ------------------------------------------ DISCLAIMER: This message is intended for the sole use of the addressee, and may contain information that is privileged, confidential and exempt from disclosure under applicable law. If you are not the addressee you are hereby notified that you may not use, copy, disclose, or distribute to anyone the message or any information contained in the message. If you have received this message in error, please immediately advise the sender by reply email and delete this message.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXH00DWLXHC1E@hubbard.azu.nl>; Mon, 10 May 2004 13:34:39 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004051013343230732 ; Mon, 10 May 2004 13:34:32 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id NAA16713; Mon, 10 May 2004 13:34:47 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma016559; Mon, 10 May 2004 13:34:19 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id EAA21073 for linac-eng-list; Mon, 10 May 2004 04:14:39 -0500 (CDT) Received: from mail20.nhs.uk (mail20.nhs.uk [62.6.139.212]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id EAA21069 for ; Mon, 10 May 2004 04:14:36 -0500 (CDT) Received: from [10.191.254.3] (helo=relayint2.nhs.uk) by mail20.nhs.uk with esmtp (MTC MTA) id 1BN6rN-0001do-9R for linac-eng@plato.aristotle.net; Mon, 10 May 2004 10:14:05 +0100 Received: from relay.nhs.uk (194.62.42.144) by relayint2.nhs.uk (Syntegra-I2 7.0.008) id 409511E6001EDBF1 for linac-eng@plato.aristotle.net; Mon, 10 May 2004 10:14:05 +0100 Received: from mercury.University-b.wmids.nhs.uk (193.240.116.176) by relay.nhs.uk (Syntegra-4 7.0.008) (authenticated as smtp_uhb_nhs_uk@es2002.nhs.uk) id 409BBBCF000A0C1F; Mon, 10 May 2004 10:14:04 +0100 Received: by MERCURY with Internet Mail Service (5.5.2657.72) id ; Mon, 10 May 2004 10:14:03 +0100 Date: Mon, 10 May 2004 10:13:53 +0100 From: Graham Chalmers Subject: RE: Siemens KD2 Dark Current Sender: owner-linac-eng@plato.aristotle.net To: "'MacPherson, Miller'" , "'linac-eng@plato.aristotle.net'" Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_tLpOLxUWsksjvYgHgiLrpw)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 10 May 2004 10:13:53 +0100 From: Graham Chalmers Subject: RE: Siemens KD2 Dark Current Sender: owner-linac-eng@plato.aristotle.net To: "'MacPherson, Miller'" , "'linac-eng@plato.aristotle.net'" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_tLpOLxUWsksjvYgHgiLrpw) Content-type: text/plain; CHARSET=US-ASCII Dear group You can see a similar effect on an Elekta machine as the gun ages and the standby current is then high enough to emit electrons pre turning the filament current up. Usually this is due either to a) incorrect standby gun current level or b) the filament is now so thin due to aging that emission occurs with reduced current. On an Elekta machine I would take this as being a good reason for changing the gun in the near future. Taken to its logical conclusion it may be prudent to consider a planned change of the accelerating section (should the same logic apply to a Siemens machine) With best wishes Graham Chalmers Graham Chalmers Radiotherapy Physics University Hospital Birmingham NHS Trust Birmingham B15 2TH 0121-627-2266 DISCLAIMER: This e-mail contains proprietary information some or all of which may be confidential or legally privileged. It is for the exclusive use of the intended recipient(s) only. If an addressing or transmission error has misdirected this e-mail and you are not the intended recipient(s), please notify the author by replying to this e-mail. If you are not the intended recipient you must not use, disclose, distribute, copy, print, or rely on this e-mail, as this may be unlawful. -----Original Message----- From: MacPherson, Miller [mailto:mmacpherson@ottawahospital.on.ca] Sent: 05 May 2004 16:35 To: 'linac-eng@plato.aristotle.net' Subject: Siemens KD2 Dark Current We have a Siemens KD2 that's about 7 years old. For the past few months, the dark current has been creeping up, so that our electronics guys can now achieve 600 MU/min for 13 MeV electrons, without injector. The have also had to add lens to 18 MV photons to prevent an MU interlock during autosequencing. We can no longer treat with electrons with this machine. My question is, is this a sign of an imminent failure of the accelerating section, or can we expect to treat with photons indefinitely? Cheers, Miller Miller MacPherson, PhD FCCPM Senior Medical Physicist Ottawa Regional Cancer Centre 503 Smyth Road, Ottawa, ON K1H 1C4 613.737.7700 x6827 fax 613.247.3507 Please note new e-mail address: mmacpherson@ottawahospital.on.ca DISCLAIMER: This e-mail contains proprietary information some or all of which may be confidential or legally privileged. It is for the exclusive use of the intended recipient(s) only. If an addressing or transmission error has misdirected this e-mail and you are not the intended recipient(s), please notify the author by replying to this e-mail. If you are not the intended recipient you must not use, disclose, distribute, copy, print, or rely on this e-mail, as this may be unlawful. --Boundary_(ID_tLpOLxUWsksjvYgHgiLrpw) Content-type: text/html Content-transfer-encoding: quoted-printable RE: Siemens KD2 Dark Current

Dear group

You can see a similar effect on an Elekta machine as = the gun ages and the standby current is then high enough to emit = electrons pre turning the filament current up. Usually this is due = either to a) incorrect standby gun current level or b) the filament is = now so thin due to aging that emission occurs with reduced current. On = an Elekta machine I would take this as being a good reason for changing = the gun in the near future. Taken to its logical conclusion it may be = prudent to consider a planned change of the accelerating section = (should the same logic apply to a Siemens machine)

With best wishes
 
Graham Chalmers
 
 

Graham Chalmers

Radiotherapy Physics

University Hospital Birmingham NHS Trust

Birmingham B15 2TH

0121-627-2266

 
 
 
 
DISCLAIMER: This e-mail contains proprietary = information some or all of which may be confidential or legally = privileged. It is for the exclusive use of the intended recipient(s) = only. If an addressing or transmission error has misdirected this = e-mail and you are not the intended recipient(s), please notify the = author by replying to this e-mail. If you are not the intended = recipient you must not use, disclose, distribute, copy, print, or rely = on this e-mail, as this may be unlawful.

-----Original Message-----
From: MacPherson, Miller [mailto:mmacpherson@otta= wahospital.on.ca]
Sent: 05 May 2004 16:35
To: 'linac-eng@plato.aristotle.net'
Subject: Siemens KD2 Dark Current


We have a Siemens KD2 that's about 7 years = old.   For the past few months,
the dark current has been creeping up, so that our = electronics guys can
now achieve 600 MU/min for 13 MeV electrons, without = injector.    The have
also had to add lens to 18 MV photons to prevent an = MU interlock during
autosequencing.

We can no longer treat with electrons with this = machine.   My question is,
is this a sign of an imminent failure of the = accelerating section, or can we
expect to
treat with photons indefinitely?  

Cheers,

Miller





Miller MacPherson, PhD FCCPM
Senior Medical Physicist
Ottawa Regional Cancer Centre
503 Smyth Road, Ottawa, ON
K1H 1C4
613.737.7700 x6827
fax 613.247.3507

Please note new e-mail address: = mmacpherson@ottawahospital.on.ca
DISCLAIMER: This e-mail contains proprietary = information some or all of which may be confidential or legally = privileged. It is for the exclusive use of the intended recipient(s) = only. If an addressing or transmission error has misdirected this = e-mail and you are not the intended recipient(s), please notify the = author by replying to this e-mail. If you are not the intended = recipient you must not use, disclose, distribute, copy, print, or rely = on this e-mail, as this may be unlawful.

--Boundary_(ID_tLpOLxUWsksjvYgHgiLrpw)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXI00CNZ99TZI@hubbard.azu.nl>; Mon, 10 May 2004 17:49:11 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004051017490508102 ; Mon, 10 May 2004 17:49:05 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id RAA07316; Mon, 10 May 2004 17:49:19 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma007214; Mon, 10 May 2004 17:49:03 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id IAA24119 for linac-eng-list; Mon, 10 May 2004 08:23:39 -0500 (CDT) Received: from mail1.aaa.dk ([212.130.128.220]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id IAA24099 for ; Mon, 10 May 2004 08:23:36 -0500 (CDT) Received: from MAILGATE-MTA by mail1.aaa.dk with Novell_GroupWise; Mon, 10 May 2004 15:23:05 +0200 Date: Mon, 10 May 2004 15:22:59 +0200 From: "Ole G. Nielsen" Subject: Svar: Siemens KD2 Dark Current Sender: owner-linac-eng@plato.aristotle.net To: mmacpherson@ottawahospital.on.ca, linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.5.1 Content-type: text/plain; charset=US-ASCII Content-disposition: inline Content-transfer-encoding: 7bit Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 10 May 2004 15:22:59 +0200 From: "Ole G. Nielsen" Subject: Svar: Siemens KD2 Dark Current Sender: owner-linac-eng@plato.aristotle.net To: mmacpherson@ottawahospital.on.ca, linac-eng@plato.aristotle.net Content-disposition: inline X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hello Miller (and List-members), DarkCurent on a Siemens will always appear first time on the highest electron energy. It can be diverted from the main beam by adding power to the Lens Coil. According my knowledge DarkCurrent will continue to increase during time. After some time it can be seen on the 2th highest electron energy - then 3th highest and so on. Use Lens Coil to minimize the effect. When you have no more power in Lens Coil Power supply you cannot use the energy anymore. On the high photon energy DarkCurrent can also be seen after some years. It is slightly more diffecult to measure but it can be neutralized by adding power to the Lens Coil. An autosequence on Xhigh like you do with as long travel of the gantry as possible and see if the MU's can be delivered without interlocks would be a fine way to detect if any significant DarkCurrent is present. The nature of the DarkCurrent is mainly due to contamination from the gunfilament to the near-by acceleration structure, so changing gun-filament would not help. By choosing a low high-energy and high low-energy when commisioning an accelerator would minimize the problem. (6/15 is very much better than 6/18 I have been told). If DarkCurrent is found to be significant I have been told that Siemens actually can change the acceleration structure within 3 or 4 days so it is not as hopeless as it seem at first moment. It would nice to hear if other people are doing some regular measurement of this phenomenom. Please keep us (=me) informed. Best regards Ole >>> "MacPherson, Miller" 05-05-04 17:34:51 >>> We have a Siemens KD2 that's about 7 years old. For the past few months, the dark current has been creeping up, so that our electronics guys can now achieve 600 MU/min for 13 MeV electrons, without injector. The have also had to add lens to 18 MV photons to prevent an MU interlock during autosequencing. We can no longer treat with electrons with this machine. My question is, is this a sign of an imminent failure of the accelerating section, or can we expect to treat with photons indefinitely? Cheers, Miller Miller MacPherson, PhD FCCPM Senior Medical Physicist Ottawa Regional Cancer Centre 503 Smyth Road, Ottawa, ON K1H 1C4 613.737.7700 x6827 fax 613.247.3507 Please note new e-mail address: mmacpherson@ottawahospital.on.ca Ole G. Nielsen Dept. of Medical Physics Aarhus University Hospital Phone +45 8949 2487 Fax +45 8949 2590  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXI00EH2A6YVU@hubbard.azu.nl>; Mon, 10 May 2004 18:09:29 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004051018092308666 ; Mon, 10 May 2004 18:09:23 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA10708; Mon, 10 May 2004 18:09:38 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma010513; Mon, 10 May 2004 18:08:49 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id JAA25656 for linac-eng-list; Mon, 10 May 2004 09:06:58 -0500 (CDT) Received: from pallas.leyenburg-ziekenhuis.nl (mail.leyenburg-ziekenhuis.nl [212.136.18.66]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id JAA25652 for ; Mon, 10 May 2004 09:06:55 -0500 (CDT) Received: from hades (hades [212.136.18.65]) by pallas.leyenburg-ziekenhuis.nl (8.11.1 (Revision 1.6) /8.9.3) with SMTP id i4ALqiY05984; Mon, 10 May 2004 15:52:45 -0600 (MDT) Received: from athena ([212.136.18.70]) by hades; Mon, 10 May 2004 16:04:09 +0200 (MEST) Received: from mfe41 ([146.0.198.40]) by athena.leyenburg-ziekenhuis.nl (iPlanet Messaging Server 5.2 (built Feb 21 2002)) with ESMTPA id <0HXI00A9M3RXZ4@athena.leyenburg-ziekenhuis.nl>; Mon, 10 May 2004 15:50:21 +0200 (METDST) Date: Mon, 10 May 2004 16:08:06 +0200 From: Jan van Seters Subject: Re: Siemens KD2 Dark Current Sender: owner-linac-eng@plato.aristotle.net To: "MacPherson, Miller" , linac-eng@plato.aristotle.net Message-id: <003a01c43698$374c1b40$28c60092@mfe41> MIME-version: 1.0 X-Mailer: Microsoft Outlook Express 6.00.2600.0000 Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 7bit Precedence: bulk X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 X-MSMail-priority: Normal References: X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 *** EOOH *** Date: Mon, 10 May 2004 16:08:06 +0200 From: Jan van Seters Subject: Re: Siemens KD2 Dark Current Sender: owner-linac-eng@plato.aristotle.net To: "MacPherson, Miller" , linac-eng@plato.aristotle.net X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 X-MSMail-priority: Normal X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 The electron gun of a Mevatron consists of indirectly heated barium oxide. Some of this material evaporates and condensates in the first section of the waveguide. This causes the dark current in electron mode. You won't see this effect in x-ray mode since the electron current for x-rays has to be much higher (about 1000 times). You can reduce the dark current by increasing the lens current until the output (in open loop) is significantly lower than the desired output (usually 300 MU/min). Then increase INJ-I. After changing the lens current, check your field symmetry. If you have already increased your lens current to max, I'm not aware of anything else you can do, but in my opinion you can still use x-rays without any problem. Regards, Jan van Seters Ziekenhuis Leyenburg The Hague The Netherlands e-mail: j.vseters@leyenburg-ziekenhuis.nl ----- Original Message ----- From: "MacPherson, Miller" To: Sent: Wednesday, May 05, 2004 5:34 PM Subject: Siemens KD2 Dark Current > > We have a Siemens KD2 that's about 7 years old. For the past few months, > the dark current has been creeping up, so that our electronics guys can > now achieve 600 MU/min for 13 MeV electrons, without injector. The have > also had to add lens to 18 MV photons to prevent an MU interlock during > autosequencing. > > We can no longer treat with electrons with this machine. My question is, > is this a sign of an imminent failure of the accelerating section, or can we > expect to > treat with photons indefinitely? > > Cheers, > > Miller > > > > > > Miller MacPherson, PhD FCCPM > Senior Medical Physicist > Ottawa Regional Cancer Centre > 503 Smyth Road, Ottawa, ON > K1H 1C4 > 613.737.7700 x6827 > fax 613.247.3507 > > Please note new e-mail address: mmacpherson@ottawahospital.on.ca ************************************************************************************************** The contents of this email and any attachments are confidential. It is intended for the named recipient(s) only. If you have received this email in error please notify the system manager or the sender immediately and do not disclose the contents to anyone or make copies. ** eSafe scanned this email for viruses, vandals and malicious content ** **************************************************************************************************  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXI00EYQBCFVU@hubbard.azu.nl>; Mon, 10 May 2004 18:33:58 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004051018335009186 ; Mon, 10 May 2004 18:33:50 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA13920; Mon, 10 May 2004 18:34:05 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma013871; Mon, 10 May 2004 18:33:33 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id JAA26452 for linac-eng-list; Mon, 10 May 2004 09:23:06 -0500 (CDT) Received: from PHSXCHICI4.partners.org (phsxchici4.mgh.harvard.edu [132.183.130.39]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id JAA26448 for ; Mon, 10 May 2004 09:23:05 -0500 (CDT) Received: by phsxchici4.mgh.harvard.edu with Internet Mail Service (5.5.2657.72) id ; Mon, 10 May 2004 10:23:08 -0400 Date: Mon, 10 May 2004 10:22:30 -0400 From: "Maddox, Buford J" Subject: RE: Elekta linacs Sender: owner-linac-eng@plato.aristotle.net To: 'Graham Chalmers' , "'Richard.Newby@gstt.sthames.nhs.uk'" , linac-eng@plato.aristotle.net Message-id: <36298D09ED1AD311B4DC0008C7F4D4E111466439@phsexch6.partners.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_b2k4rTnL6a+JwXN9oZzbDw)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 10 May 2004 10:22:30 -0400 From: "Maddox, Buford J" Subject: RE: Elekta linacs Sender: owner-linac-eng@plato.aristotle.net To: 'Graham Chalmers' , "'Richard.Newby@gstt.sthames.nhs.uk'" , linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_b2k4rTnL6a+JwXN9oZzbDw) Content-type: text/plain; charset=ISO-8859-1 I remember an SL75-5 which would have AFC problems with Gantry angle when the afc probe got loose. Another time, a drop of water condensed in one of the afc cavities, afc would jump as the drop moved. Took days to find that one. Don't know if you still have the twin cavity system, and you have a multimode machine, but old war stories are sometimes useful. Jerry -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Graham Chalmers Sent: Monday, May 10, 2004 5:39 AM To: 'Richard.Newby@gstt.sthames.nhs.uk'; linac-eng@plato.aristotle.net Subject: RE: Elekta linacs If you can pinpoint certain gantry angles then I would check the tuning and gun control at those angles Should low dose rate occur, check whether the higher dose rate may be achieved again and by which servo system. I would check tuning first. I have found on an occasion that the phase legs disappeared at certain angles so no tuning occurred. This went away after removal and reseating of the cards. You may need to check gun servo, 2R/2T and AFC. This should give a clue as to which system is not operating correctly. From then on it may be worth checking cables, ion chamber etc. Only one energy sounds odd so this could point more to a dodgy part on the mag drive. The magnetron will drive to different positions for the different energies. See if driving the magnetron tuning slightly regains the dose rate and then look at the AFC system, probes etc. We had at one point seen some instability with AFC for 18MeV electrons at GA 90 and the f response of the magnetron seemed to go through a step jump at a certain number of turns. This throws the AFC system. Adjustment of the power conditions with a resultant different in the tuning position cured the problem With best wishes Graham Chalmers Graham Chalmers Radiotherapy Physics University Hospital Birmingham NHS Trust Birmingham B15 2TH 0121-627-2266 DISCLAIMER: This e-mail contains proprietary information some or all of which may be confidential or legally privileged. It is for the exclusive use of the intended recipient(s) only. If an addressing or transmission error has misdirected this e-mail and you are not the intended recipient(s), please notify the author by replying to this e-mail. If you are not the intended recipient you must not use, disclose, distribute, copy, print, or rely on this e-mail, as this may be unlawful. -----Original Message----- From: Richard.Newby@gstt.sthames.nhs.uk [ mailto:Richard.Newby@gstt.sthames.nhs.uk ] Sent: 06 May 2004 12:21 To: linac-eng@plato.aristotle.net Subject: Elekta linacs Hi Listers We have a problem on our linac. At gantry =0 we get a good doserate at 10MV, however at certain gantry angles ie100 we always get a low dose interlock. No other energies are affected. Any suggestions please, all gratefully accepted Thanks Rick -- ******************************************************************************** ******** Please note that the new telephone number for both Guy's and St. Thomas'is 020 7188 7188. ******************************************************************************** ******** Disclaimer ******************************************************************************** ******** This e-mail may contain confidential and / or privileged information. Unless otherwise specified, the opinions expressed herein do not necessarily represent those of Guy's and St Thomas Hospital NHS Trust or any of its subsidiaries. If you are not the intended recipient (or have received this e-mail in error) please notify the sender and destroy this e-mail immediately. Any unauthorised copying, disclosure or distribution of the material in this e-mail is strictly prohibited. ******************************************************************************** ******** DISCLAIMER: This e-mail contains proprietary information some or all of which may be confidential or legally privileged. It is for the exclusive use of the intended recipient(s) only. If an addressing or transmission error has misdirected this e-mail and you are not the intended recipient(s), please notify the author by replying to this e-mail. If you are not the intended recipient you must not use, disclose, distribute, copy, print, or rely on this e-mail, as this may be unlawful. --Boundary_(ID_b2k4rTnL6a+JwXN9oZzbDw) Content-type: text/html; charset=ISO-8859-1 RE: Elekta linacs
I remember an SL75-5 which would have AFC problems with Gantry angle when the afc probe got loose.  Another time, a drop of water condensed in one of the afc cavities, afc would jump as the drop moved.  Took days to find that one.  Don't know if you still have the twin cavity system, and you have a multimode machine, but old war stories are sometimes useful. 
Jerry
-----Original Message-----
From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Graham Chalmers
Sent: Monday, May 10, 2004 5:39 AM
To: 'Richard.Newby@gstt.sthames.nhs.uk'; linac-eng@plato.aristotle.net
Subject: RE: Elekta linacs

If you can pinpoint certain gantry angles then I would check the tuning and gun control at those angles

Should low dose rate occur, check whether the higher dose rate may be achieved again and by which servo system. I would check tuning first. I have found on an occasion that the phase legs disappeared at certain angles so no tuning occurred. This went away after removal and reseating of the cards.

You may need to check gun servo, 2R/2T and AFC. This should give a clue as to which system is not operating correctly. From then on it may be worth checking cables, ion chamber etc.

Only one energy sounds odd so this could point more to a dodgy part on the mag drive. The magnetron will drive to different positions for the different energies. See if driving the magnetron tuning slightly regains the dose rate and then look at the AFC system, probes etc. We had at one point seen some instability with AFC for 18MeV electrons at GA 90 and the f response of the magnetron seemed to go through a step jump at a certain number of turns. This throws the AFC system. Adjustment of the power conditions with a resultant different in the tuning position cured the problem

With best wishes
 
Graham Chalmers
 
 

Graham Chalmers

Radiotherapy Physics

University Hospital Birmingham NHS Trust

Birmingham B15 2TH

0121-627-2266


 
 
 
DISCLAIMER: This e-mail contains proprietary information some or all of which may be confidential or legally privileged. It is for the exclusive use of the intended recipient(s) only. If an addressing or transmission error has misdirected this e-mail and you are not the intended recipient(s), please notify the author by replying to this e-mail. If you are not the intended recipient you must not use, disclose, distribute, copy, print, or rely on this e-mail, as this may be unlawful.

-----Original Message-----
From: Richard.Newby@gstt.sthames.nhs.uk [mailto:Richard.Newby@gstt.sthames.nhs.uk]
Sent: 06 May 2004 12:21
To: linac-eng@plato.aristotle.net
Subject: Elekta linacs

Hi Listers

We have a problem on our linac. At gantry =0 we get a good doserate at 10MV,
however at certain gantry angles ie100 we always get a low dose interlock.
No other energies are affected. Any suggestions please, all gratefully
accepted

Thanks

Rick

--
****************************************************************************************
Please note that the new telephone number for both Guy's and St. Thomas'is 020 7188 7188.
****************************************************************************************
Disclaimer
****************************************************************************************
This e-mail may contain confidential and / or privileged information.
Unless otherwise specified, the opinions expressed herein do not
necessarily represent those of Guy's and St Thomas Hospital NHS
Trust or any of its subsidiaries. If you are not the intended recipient
(or have received this e-mail in error) please notify the sender and
destroy this e-mail immediately. Any unauthorised copying, disclosure
or distribution of the material in this e-mail is strictly prohibited.
****************************************************************************************
DISCLAIMER: This e-mail contains proprietary information some or all of which may be confidential or legally privileged. It is for the exclusive use of the intended recipient(s) only. If an addressing or transmission error has misdirected this e-mail and you are not the intended recipient(s), please notify the author by replying to this e-mail. If you are not the intended recipient you must not use, disclose, distribute, copy, print, or rely on this e-mail, as this may be unlawful.

--Boundary_(ID_b2k4rTnL6a+JwXN9oZzbDw)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXI00J1LC1EDG@hubbard.azu.nl>; Mon, 10 May 2004 18:49:02 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004051018485809500 ; Mon, 10 May 2004 18:48:58 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA15975; Mon, 10 May 2004 18:49:13 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma015904; Mon, 10 May 2004 18:49:01 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id JAA26849 for linac-eng-list; Mon, 10 May 2004 09:46:13 -0500 (CDT) Received: from PHSEXCHICO2.Partners.org (phsexchico2.partners.org [170.223.254.20]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id JAA26845 for ; Mon, 10 May 2004 09:46:12 -0500 (CDT) Received: by phsexchico2.partners.org with Internet Mail Service (5.5.2657.72) id ; Mon, 10 May 2004 10:45:32 -0400 Date: Mon, 10 May 2004 10:45:21 -0400 From: "Maddox, Buford J" Subject: RE: Siemens KD2 Dark Current Sender: owner-linac-eng@plato.aristotle.net To: 'Graham Chalmers' , "'MacPherson, Miller'" , "'linac-eng@plato.aristotle.net'" Message-id: <36298D09ED1AD311B4DC0008C7F4D4E11146643A@phsexch6.partners.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_dx0uTMvSW207Nag13uIlNQ)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 10 May 2004 10:45:21 -0400 From: "Maddox, Buford J" Subject: RE: Siemens KD2 Dark Current Sender: owner-linac-eng@plato.aristotle.net To: 'Graham Chalmers' , "'MacPherson, Miller'" , "'linac-eng@plato.aristotle.net'" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_dx0uTMvSW207Nag13uIlNQ) Content-type: text/plain; charset=iso-8859-1 Dark current in a Mitsubishi I worked on was caused by Barium Oxides boiling off the gun and coating nearby structures, so that field emission could occur due to the coating. The coating emits very easily. When the gun was changed we had to clean all the nearby structures with acid. Siemens machines I have seen have a lens which steers the beam away during the runup period, to prevent dark current from affecting the patient dose, and the dosimetry is turned on during this time as well. During this run up time the PFN is also kept low (about 20%?), I think, so that any beam produced will not make it through the magnet. I would not change the guide because of dark current unless the Physicist says that it is affecting the dose accuracy. The linearity of the total dose for smaller doses should be monitored to keep an eye on dark current, and especially if you are doing IMRT. BTW, I would assume any Linac makes dark current and measurable radiation with the RF on, and always put a radiation meter at isocenter if necessary to work in the room. Also be aware that Linacs accelerate beam in both directions; there is always some beam out the gun end, depending on many factors like vacuum level. Any loose electrons can go either direction. I have measured this beam outside a shielding bunker. So measure all around the gantry if you have RF going. Jerry -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Graham Chalmers Sent: Monday, May 10, 2004 5:14 AM To: 'MacPherson, Miller'; 'linac-eng@plato.aristotle.net' Subject: RE: Siemens KD2 Dark Current Dear group You can see a similar effect on an Elekta machine as the gun ages and the standby current is then high enough to emit electrons pre turning the filament current up. Usually this is due either to a) incorrect standby gun current level or b) the filament is now so thin due to aging that emission occurs with reduced current. On an Elekta machine I would take this as being a good reason for changing the gun in the near future. Taken to its logical conclusion it may be prudent to consider a planned change of the accelerating section (should the same logic apply to a Siemens machine) With best wishes Graham Chalmers Graham Chalmers Radiotherapy Physics University Hospital Birmingham NHS Trust Birmingham B15 2TH 0121-627-2266 DISCLAIMER: This e-mail contains proprietary information some or all of which may be confidential or legally privileged. It is for the exclusive use of the intended recipient(s) only. If an addressing or transmission error has misdirected this e-mail and you are not the intended recipient(s), please notify the author by replying to this e-mail. If you are not the intended recipient you must not use, disclose, distribute, copy, print, or rely on this e-mail, as this may be unlawful. -----Original Message----- From: MacPherson, Miller [ mailto:mmacpherson@ottawahospital.on.ca ] Sent: 05 May 2004 16:35 To: 'linac-eng@plato.aristotle.net' Subject: Siemens KD2 Dark Current We have a Siemens KD2 that's about 7 years old. For the past few months, the dark current has been creeping up, so that our electronics guys can now achieve 600 MU/min for 13 MeV electrons, without injector. The have also had to add lens to 18 MV photons to prevent an MU interlock during autosequencing. We can no longer treat with electrons with this machine. My question is, is this a sign of an imminent failure of the accelerating section, or can we expect to treat with photons indefinitely? Cheers, Miller Miller MacPherson, PhD FCCPM Senior Medical Physicist Ottawa Regional Cancer Centre 503 Smyth Road, Ottawa, ON K1H 1C4 613.737.7700 x6827 fax 613.247.3507 Please note new e-mail address: mmacpherson@ottawahospital.on.ca DISCLAIMER: This e-mail contains proprietary information some or all of which may be confidential or legally privileged. It is for the exclusive use of the intended recipient(s) only. If an addressing or transmission error has misdirected this e-mail and you are not the intended recipient(s), please notify the author by replying to this e-mail. If you are not the intended recipient you must not use, disclose, distribute, copy, print, or rely on this e-mail, as this may be unlawful. --Boundary_(ID_dx0uTMvSW207Nag13uIlNQ) Content-type: text/html; charset=iso-8859-1 RE: Siemens KD2 Dark Current
Dark current in a Mitsubishi I worked on was caused by Barium Oxides boiling off the gun and coating nearby structures, so that field emission could occur due to the coating.  The coating emits very easily.  When the gun was changed we had to clean all the nearby structures with acid. 
 
Siemens machines I have seen have a lens which steers the beam away during the runup period, to prevent dark current from affecting the patient dose, and the dosimetry is turned on during this time as well.   During this run up time the PFN is also kept low (about 20%?), I think, so that any beam produced will not make it through the magnet.  I would not change the guide because of dark current unless the Physicist says that it is affecting the dose accuracy.  The linearity of the total dose for smaller doses should be monitored to keep an eye on dark current, and especially if you are doing IMRT.   
 
BTW, I would assume any Linac makes dark current and measurable radiation with the RF on, and always put a radiation meter at isocenter if necessary to work in the room.  Also be aware that Linacs accelerate beam in both directions;  there is always some beam out the gun end, depending on many factors like vacuum level.  Any loose electrons can go either direction.  I  have measured this beam outside a shielding bunker.  So measure all around the gantry if you have RF going. 
 
Jerry
-----Original Message-----
From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Graham Chalmers
Sent: Monday, May 10, 2004 5:14 AM
To: 'MacPherson, Miller'; 'linac-eng@plato.aristotle.net'
Subject: RE: Siemens KD2 Dark Current

Dear group

You can see a similar effect on an Elekta machine as the gun ages and the standby current is then high enough to emit electrons pre turning the filament current up. Usually this is due either to a) incorrect standby gun current level or b) the filament is now so thin due to aging that emission occurs with reduced current. On an Elekta machine I would take this as being a good reason for changing the gun in the near future. Taken to its logical conclusion it may be prudent to consider a planned change of the accelerating section (should the same logic apply to a Siemens machine)

With best wishes
 
Graham Chalmers
 
 

Graham Chalmers

Radiotherapy Physics

University Hospital Birmingham NHS Trust

Birmingham B15 2TH

0121-627-2266


 
 
 
DISCLAIMER: This e-mail contains proprietary information some or all of which may be confidential or legally privileged. It is for the exclusive use of the intended recipient(s) only. If an addressing or transmission error has misdirected this e-mail and you are not the intended recipient(s), please notify the author by replying to this e-mail. If you are not the intended recipient you must not use, disclose, distribute, copy, print, or rely on this e-mail, as this may be unlawful.

-----Original Message-----
From: MacPherson, Miller [mailto:mmacpherson@ottawahospital.on.ca]
Sent: 05 May 2004 16:35
To: 'linac-eng@plato.aristotle.net'
Subject: Siemens KD2 Dark Current


We have a Siemens KD2 that's about 7 years old.   For the past few months,
the dark current has been creeping up, so that our electronics guys can
now achieve 600 MU/min for 13 MeV electrons, without injector.    The have
also had to add lens to 18 MV photons to prevent an MU interlock during
autosequencing.

We can no longer treat with electrons with this machine.   My question is,
is this a sign of an imminent failure of the accelerating section, or can we
expect to
treat with photons indefinitely?  

Cheers,

Miller





Miller MacPherson, PhD FCCPM
Senior Medical Physicist
Ottawa Regional Cancer Centre
503 Smyth Road, Ottawa, ON
K1H 1C4
613.737.7700 x6827
fax 613.247.3507

Please note new e-mail address: mmacpherson@ottawahospital.on.ca
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--Boundary_(ID_dx0uTMvSW207Nag13uIlNQ)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXI00KSTF8QSE@hubbard.azu.nl>; Mon, 10 May 2004 19:58:08 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004051019580610752 ; Mon, 10 May 2004 19:58:06 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA24439; Mon, 10 May 2004 19:58:21 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma024406; Mon, 10 May 2004 19:58:11 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id LAA29134 for linac-eng-list; Mon, 10 May 2004 11:14:13 -0500 (CDT) Received: from webshield.swchsc.on.ca ([142.76.1.63]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id LAA29130 for ; Mon, 10 May 2004 11:14:10 -0500 (CDT) Received: from unknown(142.76.240.40) by webshield.swchsc.on.ca via csmap id 0a8f2676_a29d_11d8_9874_0002b3a35074_23733; Mon, 10 May 2004 12:13:58 -0400 (EDT) Received: by bajor.tsrcc.on.ca with Internet Mail Service (5.5.2653.19) id ; Mon, 10 May 2004 12:13:39 -0400 Date: Mon, 10 May 2004 12:13:38 -0400 From: "Rozenblat, Alex" Subject: Primus Injector PCB. Sender: owner-linac-eng@plato.aristotle.net To: 'linac' Message-id: <4631AA4F502ED711AE0700A0C9EBCF2964F6F6@bajor.tsrcc.on.ca> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_FPiD7vrk6SgvD13D7fPo1w)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 10 May 2004 12:13:38 -0400 From: "Rozenblat, Alex" Subject: Primus Injector PCB. Sender: owner-linac-eng@plato.aristotle.net To: 'linac' X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_FPiD7vrk6SgvD13D7fPo1w) Content-type: text/plain; charset=iso-8859-1 Hello, fellows Somewhere in November 2003 there was a discussion of failure of HV Pulser PCB (Injector system) that lead to jumping of electron beam dose rate and consequently outputs of these beams. The culprit was righteously named. We experience now similar problem on two linacs, so I called Siemens to find if they have a fix - besides a suggestion to buy a new PCB, of course. They suggest to buy and install new upgrade for the board which is merely a metal enclosure. My questions are: 1. Did anyone buy this upgrade and install it with following success (enclosure was installed onto bad PCB and malfunction of HV Pulser disappeared)? 2. If this PCB was fine in the beginning and now not good anylonger, how this enclosure can fix the problem (physically, I mean)? May be we have to buy a new PCB and enclosure and then pray for the positive result (or not)? Thank you in advance, Alex Rozenblat TSRCC, Toronto --Boundary_(ID_FPiD7vrk6SgvD13D7fPo1w) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: quoted-printable Primus Injector PCB.

Hello, fellows

Somewhere in November 2003 there was a = discussion of failure of HV Pulser PCB (Injector system) that lead to = jumping of electron beam dose rate and consequently outputs of these = beams. The culprit was righteously named. We experience now similar = problem on two linacs, so I called Siemens to find if they have a fix - = besides a suggestion to buy a new PCB, of course.

They suggest to buy and install new = upgrade for the board which is merely a metal enclosure.

My questions are:
1. Did anyone buy this upgrade and = install it with following success (enclosure was installed onto bad PCB = and malfunction of HV Pulser disappeared)?

2. If this PCB was fine in the = beginning and now not good anylonger, how this enclosure can fix the = problem (physically, I mean)?

    May be we have to = buy a new PCB and enclosure and then pray for the positive result (or = not)?

Thank you in advance,

Alex Rozenblat
TSRCC, Toronto

--Boundary_(ID_FPiD7vrk6SgvD13D7fPo1w)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXI00KTXFA1SE@hubbard.azu.nl>; Mon, 10 May 2004 19:59:08 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004051019590210787 ; Mon, 10 May 2004 19:59:02 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA24646; Mon, 10 May 2004 19:59:16 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma024545; Mon, 10 May 2004 19:59:00 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id KAA28785 for linac-eng-list; Mon, 10 May 2004 10:59:13 -0500 (CDT) Received: from mailsrv.smrif.com (adsl-64-108-146-17.smrif.com [64.108.146.17] (may be forged)) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id KAA28781 for ; Mon, 10 May 2004 10:59:11 -0500 (CDT) Date: Mon, 10 May 2004 10:58:40 -0500 From: Sean Frigo Subject: UPS backups on Varian 21EX Sender: owner-linac-eng@plato.aristotle.net To: List LinacEng Message-id: <39298A50956421499A06BB1C59E222B30C083D@mailsrv.smrif.com> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 8bit Precedence: bulk Content-class: urn:content-classes:message X-MimeOLE: Produced By Microsoft Exchange V6.5.6944.0 Thread-Topic: UPS backups on Varian 21EX Thread-Index: AcQ2p6mswfkwX3wiQYaJYW2d29PdQg== X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id KAA28782 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 10 May 2004 10:58:40 -0500 From: Sean Frigo Subject: UPS backups on Varian 21EX Sender: owner-linac-eng@plato.aristotle.net To: List LinacEng Content-class: urn:content-classes:message X-MimeOLE: Produced By Microsoft Exchange V6.5.6944.0 Thread-Topic: UPS backups on Varian 21EX Thread-Index: AcQ2p6mswfkwX3wiQYaJYW2d29PdQg== X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id KAA28782 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Listers, I am thinking of connecting the following parts of a Varian 21EX machine to a battery backup UPS unit: console PC MLC controller line conditioner Portal Vision PC MLC Treatment Workstation PC in order to deal with line glitches we have been experiencing and make our system a bit more resilient and protected. Our service rep said that at some point in the Varian 2100 history, this was tried, but caused problems. Any comments on what you do, adequate volt-amp rating of the UPS unit, or potential pitfalls would be appreciated. Thanks. Sean Frigo  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXI008BCLB0YT@hubbard.azu.nl>; Mon, 10 May 2004 22:09:04 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004051022085713193 ; Mon, 10 May 2004 22:08:57 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id WAA10471; Mon, 10 May 2004 22:09:12 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma010439; Mon, 10 May 2004 22:08:48 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id NAA02125 for linac-eng-list; Mon, 10 May 2004 13:12:37 -0500 (CDT) Received: from glsmtp1.gundluth.org (glsmtp1-2.gundluth.org [204.69.146.15] (may be forged)) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id NAA02119; Mon, 10 May 2004 13:12:36 -0500 (CDT) Date: Mon, 10 May 2004 13:12:32 -0500 From: ajengstl@gundluth.org Subject: Re: UPS backups on Varian 21EX Sender: owner-linac-eng@plato.aristotle.net To: Sean Frigo Cc: List LinacEng , owner-linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Lotus Notes Release 5.0.9 November 16, 2001 Content-type: text/plain; charset=us-ascii Precedence: bulk X-MIMETrack: Serialize by Router on GLSMTP1/GUNDLUTH(Release 5.0.12 |February 13, 2003) at 05/10/2004 01:22:37 PM X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 10 May 2004 13:12:32 -0500 From: ajengstl@gundluth.org Subject: Re: UPS backups on Varian 21EX Sender: owner-linac-eng@plato.aristotle.net To: Sean Frigo Cc: List LinacEng , owner-linac-eng@plato.aristotle.net X-MIMETrack: Serialize by Router on GLSMTP1/GUNDLUTH(Release 5.0.12 |February 13, 2003) at 05/10/2004 01:22:37 PM X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f We had to install a UPS on the console computer for our 21ex to stop it from being shutdown 1/week and thus having problems when they went to do warmup in the morning. It seems that for whatever reason the power must be dropping out and I have not been able to get someone in Facilities to find out why. Have not had any problems since installing the UPS, and it did not create any new problems either. We had the UPS's many years ago that the service rep may have remembered. They did not work well(may be due to their design). As far as what size I'd check out a UPS company's website for info. APC seems to be a good brand. Alan Engstler "Sean Frigo" To: "List LinacEng" Sent by: cc: owner-linac-eng@plato.ar Subject: UPS backups on Varian 21EX istotle.net 05/10/04 10:58 AM Listers, I am thinking of connecting the following parts of a Varian 21EX machine to a battery backup UPS unit: console PC MLC controller line conditioner Portal Vision PC MLC Treatment Workstation PC in order to deal with line glitches we have been experiencing and make our system a bit more resilient and protected. Our service rep said that at some point in the Varian 2100 history, this was tried, but caused problems. Any comments on what you do, adequate volt-amp rating of the UPS unit, or potential pitfalls would be appreciated. Thanks. Sean Frigo  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXI00D6APNHU9@hubbard.azu.nl>; Mon, 10 May 2004 23:42:55 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004051023425214724 ; Mon, 10 May 2004 23:42:52 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id XAA21126; Mon, 10 May 2004 23:43:07 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma021082; Mon, 10 May 2004 23:42:59 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id OAA03676 for linac-eng-list; Mon, 10 May 2004 14:55:45 -0500 (CDT) Received: from exch-front.carti.com (mail1.carti.com [65.66.64.155]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id OAA03672 for ; Mon, 10 May 2004 14:55:43 -0500 (CDT) Received: from exch-bkend.carti.com ([132.101.22.30]) by exch-front.carti.com with Microsoft SMTPSVC(5.0.2195.6713); Mon, 10 May 2004 14:59:42 -0500 Date: Mon, 10 May 2004 14:55:09 -0500 From: Shoan Edwards Subject: mileage rates Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_JT3qVGCq9hWSfJHq1c7OIA)" Precedence: bulk Content-Class: urn:content-classes:message X-MimeOLE: Produced By Microsoft Exchange V6.0.6487.1 Thread-Topic: mileage rates thread-index: AcQ2yLKjaPeNSCYDRp+0Pj3raOEPGw== X-OriginalArrivalTime: 10 May 2004 19:59:42.0156 (UTC) FILETIME=[555AD8C0:01C436C9] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 10 May 2004 14:55:09 -0500 From: Shoan Edwards Subject: mileage rates Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Content-Class: urn:content-classes:message X-MimeOLE: Produced By Microsoft Exchange V6.0.6487.1 Thread-Topic: mileage rates thread-index: AcQ2yLKjaPeNSCYDRp+0Pj3raOEPGw== X-OriginalArrivalTime: 10 May 2004 19:59:42.0156 (UTC) FILETIME=[555AD8C0:01C436C9] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This is a multi-part message in MIME format. --Boundary_(ID_JT3qVGCq9hWSfJHq1c7OIA) Content-type: text/plain; charset=us-ascii Content-transfer-encoding: quoted-printable Hello =20 Just doing some research for the company that I work for to update or travel rates due to the raise in gas prices and the deprecation to our vehicles. So basically I am looking for information so that we can put together an industry standard to present to our admin. Any info that you guys could forward along will be great. We are currently going for 37.5 cents per mile to use our vehicles. =20 Shoan Edwards --Boundary_(ID_JT3qVGCq9hWSfJHq1c7OIA) Content-type: text/html; charset=us-ascii Content-transfer-encoding: quoted-printable

Hello

 

Just doing some research for the company that I work = for to update or travel rates due to the raise in gas prices and the = deprecation to our vehicles.  So basically I am looking for information so that we = can put together an industry standard to present to our admin.  Any = info that you guys could forward along will be great.  We are currently going = for 37.5 cents per mile to use our vehicles.

 

Shoan Edwards

--Boundary_(ID_JT3qVGCq9hWSfJHq1c7OIA)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXJ009SR26AZL@hubbard.azu.nl>; Tue, 11 May 2004 04:13:28 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004051104132217996 ; Tue, 11 May 2004 04:13:22 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id EAA13980; Tue, 11 May 2004 04:13:37 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma013932; Tue, 11 May 2004 04:13:09 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id TAA09954 for linac-eng-list; Mon, 10 May 2004 19:22:10 -0500 (CDT) Received: from adl0133.systems.sa.gov.au (adl0133.systems.sa.gov.au [143.216.236.20]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id TAA09950 for ; Mon, 10 May 2004 19:22:07 -0500 (CDT) Received: from adl0133.systems.sa.gov.au (localhost [127.0.0.1]) by adl0133.systems.sa.gov.au OUTGOING (8.12.10/8.12.7) with ESMTP id i4B0LRvx003195 for ; Tue, 11 May 2004 09:51:27 +0930 (CST) Received: from rahsun153.rah.sa.gov.au (mailhub.rah.sa.gov.au [10.19.241.188]) by adl0133.systems.sa.gov.au INCOMING (8.12.10/8.12.7) with ESMTP id i4B0LR9f003188 for ; Tue, 11 May 2004 09:51:27 +0930 (CST) Received: from mail.rah.sa.gov.au (MERCURY-1 [10.19.241.90]) by rahsun153.rah.sa.gov.au (8.12.9/8.12.8) with ESMTP id i4B0LPC1002429 for ; Tue, 11 May 2004 09:51:26 +0930 (CST) Received: from Spooler by mail.rah.sa.gov.au (Mercury/32 v4.01a) ID MO0004FC; Tue, 11 May 2004 09:51:26 +0930 Received: from spooler by mail.rah.sa.gov.au (Mercury/32 v4.01a); Tue, 11 May 2004 09:50:49 +0930 Date: Tue, 11 May 2004 09:47:03 +0930 From: Andrew Frolov Subject: RE: Siemens KD2 Dark Current In-reply-to: <36298D09ED1AD311B4DC0008C7F4D4E11146643A@phsexch6.partners.org> Sender: owner-linac-eng@plato.aristotle.net To: "linac-eng@plato.aristotle.net" Message-id: <200405110021.i4B0LPC1002429@rahsun153.rah.sa.gov.au> Organization: Royal Adelaide Hospital MIME-version: 1.0 X-Mailer: Pegasus Mail for Win32 (v3.12a) Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 11 May 2004 09:47:03 +0930 From: Andrew Frolov Subject: RE: Siemens KD2 Dark Current In-reply-to: <36298D09ED1AD311B4DC0008C7F4D4E11146643A@phsexch6.partners.org> Sender: owner-linac-eng@plato.aristotle.net To: "linac-eng@plato.aristotle.net" Organization: Royal Adelaide Hospital X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hello everybody, Here is my 5c. 600 MU/min of dark current sounds not like dark current at all. Are positive that it can be achieved with the injector physically turned off? If not I would check the tuning of the machine for "Run-Up" period. First of all make sure that IPFN softpot is 10-20% lower than PFN. This de-tunes the machine for the first 6 sec of beam-on. It will also reduce any "genuine" dark current. Then make sure that KlyE pulse and InjI pulse are not overlaying during run-up. De-sync of the pulses is achieved by adjusting INJ_T softpot. If this tuning are correct and you still have an output with Injector physically switched off you definitely have a bad case of dark current. Make sure that your gun filament voltage is correct and you are not boiling the filament off. Forget about "shottky plot" procedure for a while. In practice it may lead you to overheating the filament. Set the voltage as it is shown on the AWG label or even slightly lower and check if you can produce full output for photons. If not, increase INJ_I softpot to a maximum and increase gun filament voltage by small steps until you get slightly higher than desired dose rate. Setting correct filament voltage will not reduce Dark Current but positively will stop it from further rising. There is a Dark Current Masking Procedure from Siemens that can help reduce the effect of dark current. You can request this document from them. The idea is to reduce length of RF pulse in the WG by de-syncing Klystron and RF Trigger pulses thus they are overlaping only for 1us, and increase the amplitude of Inj current proportionally. This should reduce the dark current by 80%. It makes sense although we have not tried to implement this prosedure as our dark current stopped rising after I reduced Gun Fil V and it remains on the same level of 30MU/min over three years. Hope these will help. Good luck. > We have a Siemens KD2 that's about 7 years old. For the past few months, > the dark current has been creeping up, so that our electronics guys can > now achieve 600 MU/min for 13 MeV electrons, without injector. The have > also had to add lens to 18 MV photons to prevent an MU interlock during > autosequencing. > > We can no longer treat with electrons with this machine. My question is, > is this a sign of an imminent failure of the accelerating section, or can we > Andrew Frolov Manager, RE Royal Adelaide Hospital Tel: 61 8 8222 5674 Fax: 61 8 8222 5937 email afrolov@mail.rah.sa.gov.au  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXJ00DNN5V9RL@hubbard.azu.nl>; Tue, 11 May 2004 05:33:11 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004051105330918994 ; Tue, 11 May 2004 05:33:09 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id FAA20814; Tue, 11 May 2004 05:33:24 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma020803; Tue, 11 May 2004 05:33:05 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id UAA10863 for linac-eng-list; Mon, 10 May 2004 20:40:01 -0500 (CDT) Received: from gondor.dpa.act.gov.au (gondor.dpa.act.gov.au [136.153.2.50]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id UAA10859 for ; Mon, 10 May 2004 20:39:58 -0500 (CDT) Received: (from smap@localhost) by gondor.dpa.act.gov.au (8.11.1/8.11.1) id i4B1dp109532 for ; Tue, 11 May 2004 11:39:52 +1000 (EST) Received: from unknown(10.226.2.7) by gondor via smap (V5.5) id xma009484; Tue, 11 May 2004 11:39:47 +1000 Received: by cal007.dpa.act.gov.au with Internet Mail Service (5.5.2657.72) id ; Tue, 11 May 2004 11:39:46 +1000 Date: Tue, 11 May 2004 11:39:44 +1000 From: "Rosenberg, Des" Subject: Expressions of interest Sender: owner-linac-eng@plato.aristotle.net To: "'linac-eng@plato.aristotle.net'" Message-id: <2FC7DBCD6D6AD611AD7B0090278CABAEF88E63@CAL030> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: MULTIPART/MIXED; BOUNDARY="Boundary_(ID_UFxwsXoGIJDPJmiNrwmjAw)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 11 May 2004 11:39:44 +1000 From: "Rosenberg, Des" Subject: Expressions of interest Sender: owner-linac-eng@plato.aristotle.net To: "'linac-eng@plato.aristotle.net'" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_UFxwsXoGIJDPJmiNrwmjAw) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_xyiplGAr0ChSuMXqYGHBYA)" --Boundary_(ID_xyiplGAr0ChSuMXqYGHBYA) Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: quoted-printable The Canberra Hospital is seeking a Technical Officer with experience in = the preventative and breakdown servicing of medical radiation equipment, predominately in the Radiation Oncology arena. Current oncology equipment at the Canberra hospital includes =B7 Nucletron brachytherapy system =B7 Varian linear accelerators with MLC. =B7 Philips CT simulator =B7 Varis radiotherapy management system =B7 Pinnacle planning system=20 =20 The vacancy will soon exist due to retirement and "Expressions of = Interest" for this position are being sought prior to formal advertising. Should = you have an interest in the position please contact: Peter Taunton Director of Biomedical Engineering Services The Canberra Hospital Phone: +61 2 6244 3045 Fax: +61 2 6244 3819 E-mail: peter.taunton@act.gov.au=20 All enquiries are most welcomed =20 =20 ------------------------------------------------------------------------= ---- ------------------------------------------=20 This email, and any attachments, may be confidential and also = privileged. If you are not the intended recipient: Please notify the sender and delete all copies of this transmission = along with any attachments immediately. You should not copy or use it for any purpose, nor disclose its = contents to any other person. ------------------------------------------------------------------------= ---- ------------------------------------------ =20 --Boundary_(ID_xyiplGAr0ChSuMXqYGHBYA) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: quoted-printable

The Canberra Hospital is seeking a = Technical=20 Officer with experience in the preventative and breakdown servicing of = medical=20 radiation equipment, predominately in the Radiation Oncology = arena.

 

Current oncology equipment at the Canberra hospital = includes

=B7       =20 Nucletron = brachytherapy=20 system

=B7       =20 Varian linear = accelerators=20 with MLC.

=B7       =20 Philips CT=20 simulator

=B7       =20 Varis = radiotherapy management=20 system

=B7       =20 Pinnacle planning = system=20

 

The vacancy will soon exist due to = retirement and=20 "Expressions of Interest" for this position are being sought prior to = formal=20 advertising. Should you have an interest in the position please=20 contact:

Peter Taunton

Director of Biomedical Engineering Services

The = Canberra=20 Hospital

Phone: +61 2 6244 = 3045

Fax: +61 2 6244 3819

E-mail:  peter.taunton@act.gov.au =

All=20 enquiries are most welcomed
 
 

---------------------------------------------------------= ------------------------------------------------------------- =

This email, and any attachments, may = be confidential and also privileged.

If you are not the intended = recipient:

Please notify the sender and delete = all copies of this transmission along with any attachments = immediately.

You should not copy or use it for any = purpose, nor disclose its contents to any other person.

---------------------------------------------------------= -------------------------------------------------------------

=

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Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004051115380206656 ; Tue, 11 May 2004 15:38:02 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id PAA06729; Tue, 11 May 2004 15:38:17 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma006564; Tue, 11 May 2004 15:37:30 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id GAA17318 for linac-eng-list; Tue, 11 May 2004 06:46:35 -0500 (CDT) Received: from mail21.nhs.uk (mail21.nhs.uk [62.6.139.215]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id GAA17314 for ; Tue, 11 May 2004 06:46:33 -0500 (CDT) Received: from [10.191.254.3] (helo=relayint2.nhs.uk) by mail21.nhs.uk with esmtp (MTC MTA) id 1BNVhy-0000Iy-R2 for linac-eng@plato.aristotle.net; Tue, 11 May 2004 12:46:02 +0100 Received: from relay.nhs.uk (194.62.42.143) by relayint2.nhs.uk (Syntegra-I2 7.0.008) id 409511E60026CFFB for linac-eng@plato.aristotle.net; Tue, 11 May 2004 12:46:02 +0100 Received: from mailsweeper.suht.swest.nhs.uk (194.189.32.135) by relay.nhs.uk (Syntegra-3 7.0.008) id 40A088740002D2E7 for linac-eng@plato.aristotle.net; Tue, 11 May 2004 12:46:02 +0100 Received: from mail.suht.swest.nhs.uk (unverified) by mailsweeper.suht.swest.nhs.uk (Content Technologies SMTPRS 4.3.1) with ESMTP id for ; Tue, 11 May 2004 12:50:16 +0100 Received: from SGH-MTA by mail.suht.swest.nhs.uk with Novell_GroupWise; Tue, 11 May 2004 12:46:01 +0100 Date: Tue, 11 May 2004 12:45:42 +0100 From: John McKechnie Subject: Defibrilators Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.0.2 Content-type: text/plain; charset=us-ascii Content-disposition: inline Content-transfer-encoding: 7bit Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 11 May 2004 12:45:42 +0100 From: John McKechnie Subject: Defibrilators Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Content-disposition: inline X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hello to the list, hope all is well in linac land. I recently saw some stuff on the list regarding pacemakers and defibs, and the effects that the linac beam has on them....... Well, I've deleted the e-mails and, of course, the clinicians here are now asking about it. Does anyone still have them and could they please forward them on to me. Thanks, John John McKechnie Head of Radiotherapy Electronics Wessex Radiotherapy Centre Royal Southants Hospital Brintons Terrace (Off St. Mary's Road) Southampton SO14 OYG Tel. 023 8082 5708 ************************************************************************************ This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. Any views or opinions presented are solely those of The author and do not necessarily represent those of the Trust unless explicitly stated otherwise. If you have received this e-mail in error please delete the e-mail and contact the Southampton University Hospitals NHS Trust Helpdesk on:- 023 80796000 This footnote also confirms that this email message has been swept by MIMEsweeper for the presence of computer viruses. ************************************************************************************  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXJ00MTJZFKVX@hubbard.azu.nl> for jkok@sims-ms-daemon; Tue, 11 May 2004 16:11:54 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004051116114408042 for ; Tue, 11 May 2004 16:11:44 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id QAA14200 for ; Tue, 11 May 2004 16:11:59 +0200 (MET DST) Received: from smtp.jiscmail.ac.uk(130.246.192.55) by armstrong.azu.nl via smap (V1.3) id xma014052; Tue, 11 May 2004 16:11:08 +0200 Received: from LISTSERV.JISCMAIL.AC.UK (jiscmail.ac.uk) by smtp.jiscmail.ac.uk (LSMTP for Windows NT v1.1b) with SMTP id <6.00101CFF@smtp.jiscmail.ac.uk>; Tue, 11 May 2004 15:10:43 +0100 Received: from JISCMAIL.AC.UK by JISCMAIL.AC.UK (LISTSERV-TCP/IP release 1.8e) with spool id 37151592 for MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK; Tue, 11 May 2004 15:10:42 +0100 Received: from 130.246.192.53 by JISCMAIL.AC.UK (SMTPL release 1.0i) with TCP; Tue, 11 May 2004 15:10:42 +0100 Received: from mail23.nhs.uk (mail23.nhs.uk [62.6.139.221]) by fili.jiscmail.ac.uk (8.12.8/8.12.8) with ESMTP id i4BE9iYA024391 for ; Tue, 11 May 2004 15:10:17 +0100 Received: from [10.191.254.3] (helo=relayint1.nhs.uk) by mail23.nhs.uk with esmtp (MTC MTA) id 1BNXjY-0005tJ-RH for medical-physics-engineering@jiscmail.ac.uk; Tue, 11 May 2004 14:55:48 +0100 Received: from relay.nhs.uk (194.62.42.141) by relayint1.nhs.uk (Syntegra-I1 7.0.008) id 40926E2F002658E0 for medical-physics-engineering@jiscmail.ac.uk; Tue, 11 May 2004 14:55:48 +0100 Received: from phnt39.derriford.phnt.swest.nhs.uk (195.107.1.43) by relay.nhs.uk (Syntegra-1 7.0.008) (authenticated as cl2-mail_derriford_phnt_swest_nhs_uk@es2002.nhs.uk) id 40A0C24B00010E3F for medical-physics-engineering@jiscmail.ac.uk; Tue, 11 May 2004 14:55:48 +0100 Received: from phnt42.derriford.phnt.swest.nhs.uk (EHLO phnt42.derriford.phnt.swest.nhs.uk) (10.1.15.179) by phnt39.derriford.phnt.swest.nhs.uk with SMTP (im); Tue, 11 May 2004 14:55:43 +0100 (GDT) Received: from cl2-mail.derriford.phnt.swest.nhs.uk ([10.1.15.20]) by phnt42.derriford.phnt.swest.nhs.uk with Microsoft SMTPSVC(6.0.3790.0); Tue, 11 May 2004 14:55:43 +0100 Date: Tue, 11 May 2004 14:55:43 +0100 From: "RICHMOND Ashley, Medical Physics" Subject: Total Body Electrons Using Elekta Linacs Sender: Discussion amongst academic Medical Physics in the UK To: MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK Reply-to: Discussion amongst academic Medical Physics in the UK Message-id: <938EA78F6CAFA34BB95DC6FFB22674A60301C4A7@CL2-MAIL.derriford.phnt.swest.nhs.uk> MIME-version: 1.0 Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: quoted-printable Precedence: list X-RAL-MFrom: X-RAL-Connect: Content-class: urn:content-classes:message X-MimeOLE: Produced By Microsoft Exchange V6.5.6944.0 Thread-Topic: CE Marking of Medical Devices etc Thread-Index: AcQ3Uq/aNXrEBx1yR2SoEshV7dRQ/AAC4H4Q X-OriginalArrivalTime: 11 May 2004 13:55:43.0835 (UTC) FILETIME=[A71D42B0:01C4375F] X-CCLRC-SPAM-report: -4.9 : BAYES_00 X-Scanned-By: MIMEDefang 2.38 *** EOOH *** Date: Tue, 11 May 2004 14:55:43 +0100 From: "RICHMOND Ashley, Medical Physics" Subject: Total Body Electrons Using Elekta Linacs Sender: Discussion amongst academic Medical Physics in the UK To: MEDICAL-PHYSICS-ENGINEERING@JISCMAIL.AC.UK Reply-to: Discussion amongst academic Medical Physics in the UK X-RAL-MFrom: X-RAL-Connect: Content-class: urn:content-classes:message X-MimeOLE: Produced By Microsoft Exchange V6.5.6944.0 Thread-Topic: CE Marking of Medical Devices etc Thread-Index: AcQ3Uq/aNXrEBx1yR2SoEshV7dRQ/AAC4H4Q X-OriginalArrivalTime: 11 May 2004 13:55:43.0835 (UTC) FILETIME=[A71D42B0:01C4375F] X-CCLRC-SPAM-report: -4.9 : BAYES_00 X-Scanned-By: MIMEDefang 2.38 Hi All Is anybody using an ELEKTA Linac to deliver a whole body Electron = technique ? A colleague in Iran is looking for advice on introducing such a = technique and my experience is with VARIAN equipment only.=20 Please mail direct if you can help hr_mohammadi@ofogh.net Thanks Ashley  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXK008NM4MDNX@hubbard.azu.nl>; Tue, 11 May 2004 18:03:50 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004051118034911789 ; Tue, 11 May 2004 18:03:49 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA04986; Tue, 11 May 2004 18:04:04 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma004917; Tue, 11 May 2004 18:03:27 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id JAA20015 for linac-eng-list; Tue, 11 May 2004 09:06:57 -0500 (CDT) Received: from mail6.hs.uab.edu (msgmail6.hs.uab.edu [164.111.99.115]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id JAA20011 for ; Tue, 11 May 2004 09:06:55 -0500 (CDT) Received: from msgia.hs.uab.edu not authenticated [10.20.2.43] by mail6.hs.uab.edu with NetMail SMTP Agent $Revision: 3.22.1.13 $ on Novell NetWare; Tue, 11 May 2004 09:05:54 -0500 Received: from INET-MTA by msgia.hs.uab.edu with Novell_GroupWise; Tue, 11 May 2004 09:02:57 -0500 Date: Tue, 11 May 2004 09:02:39 -0500 From: Stephen Jordan Subject: 2100C (C1) FOIL and CARR I/Ls Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.5.1 Content-type: text/plain; charset=US-ASCII Content-disposition: inline Content-transfer-encoding: 7bit Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 11 May 2004 09:02:39 -0500 From: Stephen Jordan Subject: 2100C (C1) FOIL and CARR I/Ls Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Content-disposition: inline X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Two questions: 1) What is the procedure for adjusting chain tension on the carrousel? It looks like you need 3 tiny hands and a microscopic toolset. 2) If I suspected the carrousel bearing, how would one go about lubricating and cleaning it? I routinely lubricate the chain itself, but I believe the bearing is in dire need of it. My problem is an interesting one: Randomly, the carrousel jerks (FOIL I/L) during mode up. I can not relate it to a specific energy or gantry / collimator position. The only useful therapist input was that it seems to occur most frequently when the Horseshoe (ACCY mount) is removed. I have inspected the carrousel numerous times; the chain could use an adjustment, but other than that, I'm stumped for now. Thanks Folks! Steve Jordan UAB Rad Physics  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXK00C8KITRHY@hubbard.azu.nl>; Tue, 11 May 2004 23:10:47 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004051123104119092 ; Tue, 11 May 2004 23:10:41 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id XAA13992; Tue, 11 May 2004 23:10:57 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma013941; Tue, 11 May 2004 23:10:24 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id OAA24613 for linac-eng-list; Tue, 11 May 2004 14:30:13 -0500 (CDT) Received: from phsornt422.or.providence.org (phsor-nat2.providence.org [170.220.2.14]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id OAA24609 for ; Tue, 11 May 2004 14:30:11 -0500 (CDT) Received: from PickupDirectory by phsornt422.or.providence.org with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2653.13) id KPNTZKFN; Tue, 11 May 2004 12:25:55 -0700 Received: from phsorcon06.or.providence.org ([170.220.78.187]) by phsornt422.or.providence.org with Microsoft SMTPSVC(5.0.2195.6713); Tue, 11 May 2004 12:25:55 -0700 Received: from phsormsg01.or.providence.org ([170.220.73.29]) by phsorcon06.or.providence.org with Microsoft SMTPSVC(5.0.2195.6713); Tue, 11 May 2004 12:26:23 -0700 Date: Tue, 11 May 2004 12:26:23 -0700 From: John.Kaufman@providence.org Subject: RE: 2100C (C1) FOIL and CARR I/Ls Sender: owner-linac-eng@plato.aristotle.net To: srjordan@uabmc.edu, linac-eng@plato.aristotle.net Message-id: <361A0F459B160A4D86EB7388D848F30E0E547A@phsormsg01.or.providence.org> MIME-version: 1.0 Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 8bit Importance: normal Precedence: bulk X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 Content-Class: urn:content-classes:message Thread-Topic: 2100C (C1) FOIL and CARR I/Ls thread-index: AcQ3aSCTQKAXkT7TRA6rXmlgYTWHqQAIACyg X-OriginalArrivalTime: 11 May 2004 19:26:23.0664 (UTC) FILETIME=[D892EB00:01C4378D] X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id OAA24610 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 11 May 2004 12:26:23 -0700 From: John.Kaufman@providence.org Subject: RE: 2100C (C1) FOIL and CARR I/Ls Sender: owner-linac-eng@plato.aristotle.net To: srjordan@uabmc.edu, linac-eng@plato.aristotle.net Importance: normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 Content-Class: urn:content-classes:message Thread-Topic: 2100C (C1) FOIL and CARR I/Ls thread-index: AcQ3aSCTQKAXkT7TRA6rXmlgYTWHqQAIACyg X-OriginalArrivalTime: 11 May 2004 19:26:23.0664 (UTC) FILETIME=[D892EB00:01C4378D] X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id OAA24610 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f I recently had a similar situation and called upon the previous engineer to help me with the lubricating. If you remove just the right piece of lead ( it's a fairly small one ) at the front of the bend magnet with the gantry at 360 ( Varian scale ) you can just see a part of the chain and carrousel. This will give you a decent access point from which to apply Tri-flow. I pulled the lead from the access side so that I could see the motor and pin and access this part of the system. If you turn off the air so the pin will stay up and move the carrousel by hand you can rotate it and spray small amounts of tri-flow onto the edge of the carrousel and hopefully lubricate the bearing adequately. To tell the truth it has been several months and I could not locate an adjustment either until I pulled the three bolts holding the motor mount on. Then it was quite obvious. Now my memory is sketchy of where the actual adjustment was. I couldn't find any drawings that show it well, there is an adjustment for tension that I believe moves the entire motor mounting mechanism or is butted up against this mount. After looking at the available drawings I am thinking that it could have been that the point to which it butts against is on the motor mount and the arm that holds the idler pulley has the adjustment screw in it. Hope that helps, although you are probably just going to have to pull the lead and then remove the motor mount to see exactly what I am trying to describe. John B Kaufman Senior Biomedical Technician Providence Portland Medical Center 503-215-5415 503-215-6397 -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Stephen Jordan Sent: Tuesday, May 11, 2004 7:03 AM To: linac-eng@plato.aristotle.net Subject: 2100C (C1) FOIL and CARR I/Ls Two questions: 1) What is the procedure for adjusting chain tension on the carrousel? It looks like you need 3 tiny hands and a microscopic toolset. 2) If I suspected the carrousel bearing, how would one go about lubricating and cleaning it? I routinely lubricate the chain itself, but I believe the bearing is in dire need of it. My problem is an interesting one: Randomly, the carrousel jerks (FOIL I/L) during mode up. I can not relate it to a specific energy or gantry / collimator position. The only useful therapist input was that it seems to occur most frequently when the Horseshoe (ACCY mount) is removed. I have inspected the carrousel numerous times; the chain could use an adjustment, but other than that, I'm stumped for now. Thanks Folks! Steve Jordan UAB Rad Physics DISCLAIMER: This message is intended for the sole use of the addressee, and may contain information that is privileged, confidential and exempt from disclosure under applicable law. If you are not the addressee you are hereby notified that you may not use, copy, disclose, or distribute to anyone the message or any information contained in the message. If you have received this message in error, please immediately advise the sender by reply email and delete this message.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXK00C9WIWTHY@hubbard.azu.nl>; Tue, 11 May 2004 23:12:31 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004051123122919119 ; Tue, 11 May 2004 23:12:29 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id XAA14201; Tue, 11 May 2004 23:12:45 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma014190; Tue, 11 May 2004 23:12:44 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id OAA24464 for linac-eng-list; Tue, 11 May 2004 14:13:14 -0500 (CDT) Received: from imo-d21.mx.aol.com (imo-d21.mx.aol.com [205.188.144.207]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id OAA24460 for ; Tue, 11 May 2004 14:13:13 -0500 (CDT) Received: from GARRYANGEL@aol.com by imo-d21.mx.aol.com (mail_out_v37_r1.3.) id y.163.2f608a88 (3972) for ; Tue, 11 May 2004 15:12:33 -0400 (EDT) Date: Tue, 11 May 2004 15:12:33 -0400 (EDT) From: GARRYANGEL@aol.com Subject: varian Table Weight Limits Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <163.2f608a88.2dd27fa1@aol.com> MIME-version: 1.0 X-Mailer: 9.0 for Windows sub 5110 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_12jIrwHxPmNjhaY2HdtxHA)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 11 May 2004 15:12:33 -0400 (EDT) From: GARRYANGEL@aol.com Subject: varian Table Weight Limits Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f --Boundary_(ID_12jIrwHxPmNjhaY2HdtxHA) Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7bit Hi list: I have been looking through the Varian CTB's looking for the CTB on weight limits and cannot seem to find it. Can anyone direct me to the CTB or does anyone have a copy that they can send. It would be appreciated. Thanks in advance! Garry --Boundary_(ID_12jIrwHxPmNjhaY2HdtxHA) Content-type: text/html; charset=US-ASCII Content-transfer-encoding: quoted-printable
Hi list:
 
I have been looking through the Varian CTB's looking for the CTB on wei= ght limits and cannot seem to find it. Can anyone direct me to the CTB or do= es anyone have a copy that they can send. It would be appreciated.
 
Thanks in advance!
 
Garry
--Boundary_(ID_12jIrwHxPmNjhaY2HdtxHA)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXK00IHBQBCRC@hubbard.azu.nl>; Wed, 12 May 2004 01:52:25 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004051201522423501 ; Wed, 12 May 2004 01:52:24 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id BAA01315; Wed, 12 May 2004 01:52:40 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma001292; Wed, 12 May 2004 01:52:25 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id RAA01021 for linac-eng-list; Tue, 11 May 2004 17:15:31 -0500 (CDT) Received: from cwav01.cw.bc.ca (mail2.cw.bc.ca [207.23.159.180]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id RAA01017 for ; Tue, 11 May 2004 17:15:29 -0500 (CDT) Received: From server17.bccancer.bc.ca ([205.233.164.254]) by cwav01.cw.bc.ca (WebShield SMTP v4.5 MR1a); id 1084313666944; Tue, 11 May 2004 15:14:26 -0700 Received: by SERVER17 with Internet Mail Service (5.5.2653.19) id ; Tue, 11 May 2004 15:13:23 -0700 Date: Tue, 11 May 2004 15:17:47 -0700 From: "Patrick Wong (VICC)" Subject: RE: varian Table Weight Limits Sender: owner-linac-eng@plato.aristotle.net To: "'GARRYANGEL@aol.com'" Cc: linac-eng@plato.aristotle.net Message-id: <6BAF4D075F07D411B30900508B94CBA007A4F899@SERVER20> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_1xPW/hI1HWq3VUkoyOjVnQ)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 11 May 2004 15:17:47 -0700 From: "Patrick Wong (VICC)" Subject: RE: varian Table Weight Limits Sender: owner-linac-eng@plato.aristotle.net To: "'GARRYANGEL@aol.com'" Cc: linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_1xPW/hI1HWq3VUkoyOjVnQ) Content-type: text/plain; CHARSET=US-ASCII Hi Garry You can find the treatment couch safety precaution information in Clinac-Safety manual, P/N 1104957-01, Page 3-21 and also find in in Exact Couch-User Guide/maintenance manual for Couch and Couch top, P/N 1104201-02, Page 3-3. Basically, it said maximum weight up to 440 pounds lying on the couch top. I hope it help. Patrick Wong C.T. Radiotherapy Service Technologist Dept. Of medical Physics Vancouver Island Cancer Centre 2410 Lee Avenue Victoria B.C. Canada V8R 6V5 Tel:(250) 519-5500 X-3737 Fax.(250)519-2024 -----Original Message----- From: GARRYANGEL@aol.com [mailto:GARRYANGEL@aol.com] Sent: Tuesday, May 11, 2004 12:13 PM To: linac-eng@plato.aristotle.net Subject: varian Table Weight Limits Hi list: I have been looking through the Varian CTB's looking for the CTB on weight limits and cannot seem to find it. Can anyone direct me to the CTB or does anyone have a copy that they can send. It would be appreciated. Thanks in advance! Garry --Boundary_(ID_1xPW/hI1HWq3VUkoyOjVnQ) Content-type: text/html
Hi Garry
You can find the treatment couch safety precaution information in Clinac-Safety manual, P/N 1104957-01, Page 3-21 and also find in 
in Exact Couch-User Guide/maintenance manual for Couch and Couch top, P/N 1104201-02, Page 3-3.
Basically, it said maximum weight up to 440 pounds lying on the couch top.
I hope it help. 
 

Patrick Wong  C.T.
Radiotherapy Service Technologist
Dept. Of medical Physics
Vancouver Island Cancer Centre
2410 Lee Avenue
Victoria B.C. Canada
V8R 6V5
Tel:(250) 519-5500 X-3737
Fax.(250)519-2024

-----Original Message-----
From: GARRYANGEL@aol.com [mailto:GARRYANGEL@aol.com]
Sent: Tuesday, May 11, 2004 12:13 PM
To: linac-eng@plato.aristotle.net
Subject: varian Table Weight Limits

Hi list:
 
I have been looking through the Varian CTB's looking for the CTB on weight limits and cannot seem to find it. Can anyone direct me to the CTB or does anyone have a copy that they can send. It would be appreciated.
 
Thanks in advance!
 
Garry
--Boundary_(ID_1xPW/hI1HWq3VUkoyOjVnQ)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXL00FUJPW22G@hubbard.azu.nl>; Wed, 12 May 2004 14:40:59 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004051214405709164 ; Wed, 12 May 2004 14:40:57 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id OAA13443; Wed, 12 May 2004 14:41:13 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma013349; Wed, 12 May 2004 14:40:39 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id FAA09128 for linac-eng-list; Wed, 12 May 2004 05:57:39 -0500 (CDT) Received: from mail20.nhs.uk (mail20.nhs.uk [62.6.139.212]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id FAA09124 for ; Wed, 12 May 2004 05:57:37 -0500 (CDT) Received: from [10.191.254.3] (helo=relayint1.nhs.uk) by mail20.nhs.uk with esmtp (MTC MTA) id 1BNrQB-0004JD-35 for linac-eng@plato.aristotle.net; Wed, 12 May 2004 11:57:07 +0100 Received: from relay.nhs.uk (194.62.42.144) by relayint1.nhs.uk (Syntegra-I1 7.0.008) id 40926E2F002A30C9 for linac-eng@plato.aristotle.net; Wed, 12 May 2004 11:57:06 +0100 Received: from gstt.nhs.uk (195.105.110.3) by relay.nhs.uk (Syntegra-4 7.0.008) id 40A0C3600008851F for linac-eng@plato.aristotle.net; Wed, 12 May 2004 11:57:05 +0100 Received: from (EHLO ex1.gstt.sthames.nhs.uk) (195.105.110.28) by gstt.nhs.uk with SMTP (im); Wed, 12 May 2004 11:58:22 +0100 (GDT) Received: by ex1.gstt.sthames.nhs.uk with Internet Mail Service (5.5.2653.19) id ; Wed, 12 May 2004 11:56:56 +0100 Date: Wed, 12 May 2004 11:56:56 +0100 From: Richard.Newby@gstt.sthames.nhs.uk Subject: Elekta linacs Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 12 May 2004 11:56:56 +0100 From: Richard.Newby@gstt.sthames.nhs.uk Subject: Elekta linacs Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hi LIsters Firstly, thanks to all those that responded to my cry for help, your suggestions were most welcome. Secondly, the solution! A cable had not been secured in the gantry drum. This cable flopped onto the HP Phase semirigid cable and over a period of time damaged the joint. As the gantry rotated to 100deg the cable rubbed on the semirigid causing the problem (HP phase changed requiring an extra 4 turns on magnetron tuner to compensate. This was out of tolerance causing the trip). We have now tied the cable down which allows us to operate normally, but we will have to replace the semirigid at some point in the future. Rick -- **************************************************************************************** Please note that the new telephone number for both Guy's and St. Thomas'is 020 7188 7188. **************************************************************************************** Disclaimer **************************************************************************************** This e-mail may contain confidential and / or privileged information. Unless otherwise specified, the opinions expressed herein do not necessarily represent those of Guy's and St Thomas Hospital NHS Trust or any of its subsidiaries. If you are not the intended recipient (or have received this e-mail in error) please notify the sender and destroy this e-mail immediately. Any unauthorised copying, disclosure or distribution of the material in this e-mail is strictly prohibited. ****************************************************************************************  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXL0070UZ0ZD8@hubbard.azu.nl>; Wed, 12 May 2004 17:58:17 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004051217581016304 ; Wed, 12 May 2004 17:58:10 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id RAA22074; Wed, 12 May 2004 17:58:26 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma021987; Wed, 12 May 2004 17:57:46 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id IAA11745 for linac-eng-list; Wed, 12 May 2004 08:53:04 -0500 (CDT) Received: from lhsc.on.ca (ironmail.lhsc.on.ca [142.158.10.115]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id IAA11741 for ; Wed, 12 May 2004 08:53:03 -0500 (CDT) Received: from ([142.158.2.40]) by ironmail.lhsc.on.ca with ESMTP ; Wed, 12 May 2004 09:51:56 -0400 Received: from mail.lrcc.on.ca (mail.lrcc.on.ca [142.158.120.242]) by dizzy.lhsc.on.ca (8.12.10+Sun/8.12.10) with SMTP id i4CDpuxt019277; Wed, 12 May 2004 09:51:56 -0400 (EDT) Received: by mail.lrcc.on.ca(Lotus SMTP MTA v4.6.7 (934.1 12-30-1999)) id 85256E92.004C2879 ; Wed, 12 May 2004 09:51:50 -0400 Date: Wed, 12 May 2004 09:51:46 -0400 From: Jim.Allin@lrcc.on.ca Subject: Re: 2100C (C1) FOIL and CARR I/Ls Sender: owner-linac-eng@plato.aristotle.net To: Stephen Jordan , linac-eng@plato.aristotle.net Message-id: <85256E92.004C26D1.00@mail.lrcc.on.ca> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Content-disposition: inline Precedence: bulk X-Lotus-FromDomain: LRCC X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 12 May 2004 09:51:46 -0400 From: Jim.Allin@lrcc.on.ca Subject: Re: 2100C (C1) FOIL and CARR I/Ls Sender: owner-linac-eng@plato.aristotle.net To: Stephen Jordan , linac-eng@plato.aristotle.net Content-disposition: inline X-Lotus-FromDomain: LRCC X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Steven We have had similar problems in the past. Ours was a result of the solid state relay K1 on the Filter and Target Interlock board. This device turned on and off quickly like a light dimmer at the beginning of power up. This caused a reduced voltage to the stepper motor driving the carrousel turntable. This reduced voltage, in turn, reduced the drive torque and it would skip steps (that's where the jerky noise comes from). The 120Vac that passes through this bad SS relay is switching the power to a transformer. The resultant current spikes can burn up a series resistor that the schematic lists as an NTC device. The turntable itself can be lubed by removing the square piece of lead at the very front of the machine, gantry at 180 IEC. I believe moding up 20e places the 6x flattening filter at the front under that lead block. It has a cover over it and is the most protected. The bearing is then visible and can be lubed with Tri-Flow. Hope this helps Jim Allin London Regional Cancer Centre London, Ontario Canada  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXM00IPU5AFMB@hubbard.azu.nl>; Wed, 12 May 2004 20:13:31 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004051220132619093 ; Wed, 12 May 2004 20:13:26 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id UAA10556; Wed, 12 May 2004 20:13:43 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma010542; Wed, 12 May 2004 20:13:24 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id LAA14709 for linac-eng-list; Wed, 12 May 2004 11:24:54 -0500 (CDT) Received: from PHSEXCHICI.MGH.HARVARD.EDU (phsexchici.mgh.harvard.edu [132.183.126.51]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id LAA14705 for ; Wed, 12 May 2004 11:24:53 -0500 (CDT) Received: by phsexchici.mgh.harvard.edu with Internet Mail Service (5.5.2657.72) id ; Wed, 12 May 2004 12:21:47 -0400 Date: Wed, 12 May 2004 12:21:43 -0400 From: "Maddox, Buford J" Subject: RE: 2100C (C1) FOIL and CARR I/Ls Sender: owner-linac-eng@plato.aristotle.net To: 'Stephen Jordan' , linac-eng@plato.aristotle.net Message-id: <36298D09ED1AD311B4DC0008C7F4D4E11146643E@phsexch6.partners.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 12 May 2004 12:21:43 -0400 From: "Maddox, Buford J" Subject: RE: 2100C (C1) FOIL and CARR I/Ls Sender: owner-linac-eng@plato.aristotle.net To: 'Stephen Jordan' , linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f We had a very sticky one, caused many different faults. It would stop in various places. With the gantry horizontal, we flushed it with mineral spirits. Then air dried it. Then put liquid superlube into it. Jerry -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Stephen Jordan Sent: Tuesday, May 11, 2004 10:03 AM To: linac-eng@plato.aristotle.net Subject: 2100C (C1) FOIL and CARR I/Ls Two questions: 1) What is the procedure for adjusting chain tension on the carrousel? It looks like you need 3 tiny hands and a microscopic toolset. 2) If I suspected the carrousel bearing, how would one go about lubricating and cleaning it? I routinely lubricate the chain itself, but I believe the bearing is in dire need of it. My problem is an interesting one: Randomly, the carrousel jerks (FOIL I/L) during mode up. I can not relate it to a specific energy or gantry / collimator position. The only useful therapist input was that it seems to occur most frequently when the Horseshoe (ACCY mount) is removed. I have inspected the carrousel numerous times; the chain could use an adjustment, but other than that, I'm stumped for now. Thanks Folks! Steve Jordan UAB Rad Physics  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXM000287SQS5@hubbard.azu.nl>; Wed, 12 May 2004 21:07:41 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004051221073620055 ; Wed, 12 May 2004 21:07:36 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id VAA17385; Wed, 12 May 2004 21:07:53 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma017315; Wed, 12 May 2004 21:07:35 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id MAA15679 for linac-eng-list; Wed, 12 May 2004 12:25:34 -0500 (CDT) Received: from smtpout-2.priv.cc.uic.edu (smtpout-2.cc.uic.edu [128.248.155.233]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id MAA15675 for ; Wed, 12 May 2004 12:25:33 -0500 (CDT) Received: (qmail 23180 invoked from network); Wed, 12 May 2004 12:25:31 -0500 Received: from uimcc53.hospital.uic.edu (HELO uimcc53.D2UICMED.uimcc.uic.edu) (128.248.114.93) by smtpout-2.cc.uic.edu with SMTP; Wed, 12 May 2004 12:25:31 -0500 Received: by uimcc53.hospital.uic.edu with Internet Mail Service (5.5.2653.19) id ; Wed, 12 May 2004 12:25:17 -0500 Date: Wed, 12 May 2004 12:25:16 -0500 From: "Bisevac, Simeon" Subject: RE: varian Table Weight Limits Sender: owner-linac-eng@plato.aristotle.net To: "Patrick Wong (VICC)" , "'GARRYANGEL@aol.com'" Cc: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_KC44RZB9g33KbjxV2kpk8Q)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 12 May 2004 12:25:16 -0500 From: "Bisevac, Simeon" Subject: RE: varian Table Weight Limits Sender: owner-linac-eng@plato.aristotle.net To: "Patrick Wong (VICC)" , "'GARRYANGEL@aol.com'" Cc: linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_KC44RZB9g33KbjxV2kpk8Q) Content-type: text/plain; CHARSET=US-ASCII Hi All The clinac safety manual (p/n 1104957-01 page 3-21) shows the exact couch limit to be 400 pounds. The exact couch maintenance manual (p/n 1104201-02 page 3-3) shows it to be 440 pounds. Is there a misprint in one of my books? If not, which one is the correct weight limit? Thanks Simeon Bisevac University of Ilinois Med. Cnt. Rad. Onc. Chicago, IL -----Original Message----- From: Patrick Wong (VICC) [mailto:PWong@bccancer.bc.ca] Sent: Tuesday, May 11, 2004 5:18 PM To: 'GARRYANGEL@aol.com' Cc: linac-eng@plato.aristotle.net Subject: RE: varian Table Weight Limits Hi Garry You can find the treatment couch safety precaution information in Clinac-Safety manual, P/N 1104957-01, Page 3-21 and also find in in Exact Couch-User Guide/maintenance manual for Couch and Couch top, P/N 1104201-02, Page 3-3. Basically, it said maximum weight up to 440 pounds lying on the couch top. I hope it help. Patrick Wong C.T. Radiotherapy Service Technologist Dept. Of medical Physics Vancouver Island Cancer Centre 2410 Lee Avenue Victoria B.C. Canada V8R 6V5 Tel:(250) 519-5500 X-3737 Fax.(250)519-2024 -----Original Message----- From: GARRYANGEL@aol.com [mailto:GARRYANGEL@aol.com] Sent: Tuesday, May 11, 2004 12:13 PM To: linac-eng@plato.aristotle.net Subject: varian Table Weight Limits Hi list: I have been looking through the Varian CTB's looking for the CTB on weight limits and cannot seem to find it. Can anyone direct me to the CTB or does anyone have a copy that they can send. It would be appreciated. Thanks in advance! Garry ****************************EMAIL DISCLAIMER****************************This e-mail and any files transmitted with it may be confidential and are intended solely for the use of the individual or entity to whom they are addressed. If you are not the intended recipient or the individual responsible for delivering the e-mail to the intended recipient, any disclosure, copying, distribution or any action taken or omitted to be taken in reliance on it, is strictly prohibited. If you have received this e-mail in error, please delete it and notify the sender or contact Health Information Management 312.413.4947. --Boundary_(ID_KC44RZB9g33KbjxV2kpk8Q) Content-type: text/html Message
Hi All
 
The  clinac safety manual (p/n 1104957-01 page 3-21) shows the exact couch limit to be 400 pounds.
The exact couch maintenance manual (p/n 1104201-02 page 3-3) shows it to be 440 pounds.
Is there a misprint in one of my books?  If not, which one is the correct weight limit? 
Thanks
 
Simeon Bisevac
University of Ilinois Med. Cnt.
Rad. Onc.
Chicago, IL
-----Original Message-----
From: Patrick Wong (VICC) [mailto:PWong@bccancer.bc.ca]
Sent: Tuesday, May 11, 2004 5:18 PM
To: 'GARRYANGEL@aol.com'
Cc: linac-eng@plato.aristotle.net
Subject: RE: varian Table Weight Limits

Hi Garry
You can find the treatment couch safety precaution information in Clinac-Safety manual, P/N 1104957-01, Page 3-21 and also find in 
in Exact Couch-User Guide/maintenance manual for Couch and Couch top, P/N 1104201-02, Page 3-3.
Basically, it said maximum weight up to 440 pounds lying on the couch top.
I hope it help. 
 

Patrick Wong  C.T.
Radiotherapy Service Technologist
Dept. Of medical Physics
Vancouver Island Cancer Centre
2410 Lee Avenue
Victoria B.C. Canada
V8R 6V5
Tel:(250) 519-5500 X-3737
Fax.(250)519-2024

-----Original Message-----
From: GARRYANGEL@aol.com [mailto:GARRYANGEL@aol.com]
Sent: Tuesday, May 11, 2004 12:13 PM
To: linac-eng@plato.aristotle.net
Subject: varian Table Weight Limits

Hi list:
 
I have been looking through the Varian CTB's looking for the CTB on weight limits and cannot seem to find it. Can anyone direct me to the CTB or does anyone have a copy that they can send. It would be appreciated.
 
Thanks in advance!
 
Garry

****************************EMAIL DISCLAIMER****************************This e-mail and any files transmitted with it may be confidential and are intended solely for the use of the individual or entity to whom they are addressed. If you are not the intended recipient or the individual responsible for delivering the e-mail to the intended recipient, any disclosure, copying, distribution or any action taken or omitted to be taken in reliance on it, is strictly prohibited. If you have received this e-mail in error, please delete it and notify the sender or contact Health Information Management 312.413.4947.

--Boundary_(ID_KC44RZB9g33KbjxV2kpk8Q)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXM00K6B7UQGH@hubbard.azu.nl>; Wed, 12 May 2004 21:08:51 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004051221084920078 ; Wed, 12 May 2004 21:08:49 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id VAA17528; Wed, 12 May 2004 21:09:06 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma017424; Wed, 12 May 2004 21:08:24 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id MAA15456 for linac-eng-list; Wed, 12 May 2004 12:09:45 -0500 (CDT) Received: from PHSEXCHICO2.Partners.org (phsexchico2.partners.org [170.223.254.20]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id MAA15452 for ; Wed, 12 May 2004 12:09:44 -0500 (CDT) Received: by phsexchico2.partners.org with Internet Mail Service (5.5.2657.72) id ; Wed, 12 May 2004 13:00:24 -0400 Date: Wed, 12 May 2004 13:00:23 -0400 From: "Maddox, Buford J" Subject: RE: varian Table Weight Limits Sender: owner-linac-eng@plato.aristotle.net To: "'Patrick Wong (VICC)'" , "'GARRYANGEL@aol.com'" Cc: linac-eng@plato.aristotle.net Message-id: <36298D09ED1AD311B4DC0008C7F4D4E11146643F@phsexch6.partners.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_5oJPoW2IHDIFZKU7uX+Q/Q)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 12 May 2004 13:00:23 -0400 From: "Maddox, Buford J" Subject: RE: varian Table Weight Limits Sender: owner-linac-eng@plato.aristotle.net To: "'Patrick Wong (VICC)'" , "'GARRYANGEL@aol.com'" Cc: linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_5oJPoW2IHDIFZKU7uX+Q/Q) Content-type: text/plain; charset=iso-8859-1 Note that the 440 lb limit is the basic lifting capacity. This is set by the motor current limit, I think. There are lower limits for different parts of the couch, probably based on potential failures, as described in the manuals and on the stickers on the couch top. The plywood service top is necessary because concentrated forces are not allowed on the carbon fiber mesh. Limits may also change with age and radiation history. This is an area needing frequent and careful PMI. Once had a very large patient hitching in a jerky manner along an ETR couch, caused the tennis racquet (and patient) to fall into the couch top. Large people tend to move in this manner, which I think would be risky with the carbon fiber tops. Good topic for this forum. Jerry -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Patrick Wong (VICC) Sent: Tuesday, May 11, 2004 6:18 PM To: 'GARRYANGEL@aol.com' Cc: linac-eng@plato.aristotle.net Subject: RE: varian Table Weight Limits Hi Garry You can find the treatment couch safety precaution information in Clinac-Safety manual, P/N 1104957-01, Page 3-21 and also find in in Exact Couch-User Guide/maintenance manual for Couch and Couch top, P/N 1104201-02, Page 3-3. Basically, it said maximum weight up to 440 pounds lying on the couch top. I hope it help. Patrick Wong C.T. Radiotherapy Service Technologist Dept. Of medical Physics Vancouver Island Cancer Centre 2410 Lee Avenue Victoria B.C. Canada V8R 6V5 Tel:(250) 519-5500 X-3737 Fax.(250)519-2024 -----Original Message----- From: GARRYANGEL@aol.com [mailto:GARRYANGEL@aol.com] Sent: Tuesday, May 11, 2004 12:13 PM To: linac-eng@plato.aristotle.net Subject: varian Table Weight Limits Hi list: I have been looking through the Varian CTB's looking for the CTB on weight limits and cannot seem to find it. Can anyone direct me to the CTB or does anyone have a copy that they can send. It would be appreciated. Thanks in advance! Garry --Boundary_(ID_5oJPoW2IHDIFZKU7uX+Q/Q) Content-type: text/html; charset=iso-8859-1
Note that the 440 lb limit is the basic lifting capacity.  This is set by the motor current limit, I think.  There are lower limits for different parts of the couch, probably based on potential failures, as described in the manuals and on the stickers on the couch top.  The plywood service top is necessary because concentrated forces are not allowed on the carbon fiber mesh.  Limits may also change with age and radiation history.  This is an area needing frequent and careful PMI.
 
Once had a very large patient hitching in a jerky manner along an ETR couch,  caused the tennis racquet (and patient) to fall into the couch top.  Large people tend to move in this manner, which I think would be risky with the carbon fiber tops.  
 
Good topic for this forum.
 
Jerry
 -----Original Message-----
From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Patrick Wong (VICC)
Sent: Tuesday, May 11, 2004 6:18 PM
To: 'GARRYANGEL@aol.com'
Cc: linac-eng@plato.aristotle.net
Subject: RE: varian Table Weight Limits

Hi Garry
You can find the treatment couch safety precaution information in Clinac-Safety manual, P/N 1104957-01, Page 3-21 and also find in 
in Exact Couch-User Guide/maintenance manual for Couch and Couch top, P/N 1104201-02, Page 3-3.
Basically, it said maximum weight up to 440 pounds lying on the couch top.
I hope it help. 
 

Patrick Wong  C.T.
Radiotherapy Service Technologist
Dept. Of medical Physics
Vancouver Island Cancer Centre
2410 Lee Avenue
Victoria B.C. Canada
V8R 6V5
Tel:(250) 519-5500 X-3737
Fax.(250)519-2024

-----Original Message-----
From: GARRYANGEL@aol.com [mailto:GARRYANGEL@aol.com]
Sent: Tuesday, May 11, 2004 12:13 PM
To: linac-eng@plato.aristotle.net
Subject: varian Table Weight Limits

Hi list:
 
I have been looking through the Varian CTB's looking for the CTB on weight limits and cannot seem to find it. Can anyone direct me to the CTB or does anyone have a copy that they can send. It would be appreciated.
 
Thanks in advance!
 
Garry
--Boundary_(ID_5oJPoW2IHDIFZKU7uX+Q/Q)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXM000YF9L9S5@hubbard.azu.nl>; Wed, 12 May 2004 21:46:23 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004051221462120854 ; Wed, 12 May 2004 21:46:21 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id VAA22264; Wed, 12 May 2004 21:46:37 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma022215; Wed, 12 May 2004 21:46:20 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id MAA16019 for linac-eng-list; Wed, 12 May 2004 12:47:04 -0500 (CDT) Received: from mopsy2.ccit.musc.edu (mopsy2.ccit.musc.edu [128.23.34.56]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id MAA16015 for ; Wed, 12 May 2004 12:47:03 -0500 (CDT) Received: from revere3.musc.edu (revere3.musc.edu [128.23.203.9]) by mopsy2.ccit.musc.edu (8.12.10/8.12.10) with ESMTP id i4CHjTv6017435 for ; Wed, 12 May 2004 13:45:29 -0400 Received: from XCHANGE2k.radonc2k.musc.edu (xchange2k.RadOnc.musc.edu [128.23.55.250]) by revere3.musc.edu (8.12.9/8.12.9) with ESMTP id i4CHjTI4028473 for ; Wed, 12 May 2004 13:45:29 -0400 (EDT) Date: Wed, 12 May 2004 13:45:29 -0400 From: "Nelson, Steve" Subject: RE: varian Table Weight Limits Sender: owner-linac-eng@plato.aristotle.net To: "Maddox, Buford J" Cc: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_o61PI77EDAKnwUAQHkvYmQ)" Precedence: bulk Content-Class: urn:content-classes:message X-MimeOLE: Produced By Microsoft Exchange V6.0.6487.1 Thread-Topic: varian Table Weight Limits thread-index: AcQ4RpkiCUhC7jilRm655lbaNMvy+wAAKKNA X-MUSC-MailScanner-Information: Please contact postmstr@musc.edu for more information X-MUSC-MailScanner: Found to be clean X-MUSC-MailScanner-SpamCheck: not spam (whitelisted), SpamAssassin (score=0.284, required 4, HTML_50_60 0.18, HTML_FONTCOLOR_UNKNOWN 0.10, HTML_MESSAGE 0.00) X-MailScanner-From: nelson@radonc.musc.edu X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 12 May 2004 13:45:29 -0400 From: "Nelson, Steve" Subject: RE: varian Table Weight Limits Sender: owner-linac-eng@plato.aristotle.net To: "Maddox, Buford J" Cc: linac-eng@plato.aristotle.net Content-Class: urn:content-classes:message X-MimeOLE: Produced By Microsoft Exchange V6.0.6487.1 Thread-Topic: varian Table Weight Limits thread-index: AcQ4RpkiCUhC7jilRm655lbaNMvy+wAAKKNA X-MUSC-MailScanner-Information: Please contact postmstr@musc.edu for more information X-MUSC-MailScanner: Found to be clean X-MUSC-MailScanner-SpamCheck: not spam (whitelisted), SpamAssassin (score=0.284, required 4, HTML_50_60 0.18, HTML_FONTCOLOR_UNKNOWN 0.10, HTML_MESSAGE 0.00) X-MailScanner-From: nelson@radonc.musc.edu X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This is a multi-part message in MIME format. --Boundary_(ID_o61PI77EDAKnwUAQHkvYmQ) Content-type: text/plain; charset=us-ascii Content-transfer-encoding: quoted-printable Jerry, et. al. Many years ago, on an ETR couch, we had an instance where a therapist was lowering a very large (300++) patient at max rate. The couch (of course) hit the limit switch and the jacking screw was stripped and ruined. For that reason, whenever we have a 300+ pounder, the therapists are instructed to be extremely careful to start and stop the couch lift in a slow ramping manner. (Otherwise, the one day downtime will be their fault) Haven't had a problem since. (Knocking on wood) Good thread, Stephen -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net] On Behalf Of Maddox, Buford J Sent: Wednesday, May 12, 2004 1:00 PM To: 'Patrick Wong (VICC)'; 'GARRYANGEL@aol.com' Cc: linac-eng@plato.aristotle.net Subject: RE: varian Table Weight Limits =20 Note that the 440 lb limit is the basic lifting capacity. This is set by the motor current limit, I think. There are lower limits for different parts of the couch, probably based on potential failures, as described in the manuals and on the stickers on the couch top. The plywood service top is necessary because concentrated forces are not allowed on the carbon fiber mesh. Limits may also change with age and radiation history. This is an area needing frequent and careful PMI. =20 Once had a very large patient hitching in a jerky manner along an ETR couch, caused the tennis racquet (and patient) to fall into the couch top. Large people tend to move in this manner, which I think would be risky with the carbon fiber tops. =20 =20 Good topic for this forum. =20 Jerry -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Patrick Wong (VICC) Sent: Tuesday, May 11, 2004 6:18 PM To: 'GARRYANGEL@aol.com' Cc: linac-eng@plato.aristotle.net Subject: RE: varian Table Weight Limits Hi Garry You can find the treatment couch safety precaution information in Clinac-Safety manual, P/N 1104957-01, Page 3-21 and also find in=20 in Exact Couch-User Guide/maintenance manual for Couch and Couch top, P/N 1104201-02, Page 3-3. Basically, it said maximum weight up to 440 pounds lying on the couch top. I hope it help.=20 =20 Patrick Wong C.T.=20 Radiotherapy Service Technologist=20 Dept. Of medical Physics=20 Vancouver Island Cancer Centre=20 2410 Lee Avenue=20 Victoria B.C. Canada=20 V8R 6V5=20 Tel:(250) 519-5500 X-3737=20 Fax.(250)519-2024=20 -----Original Message----- From: GARRYANGEL@aol.com [mailto:GARRYANGEL@aol.com] Sent: Tuesday, May 11, 2004 12:13 PM To: linac-eng@plato.aristotle.net Subject: varian Table Weight Limits Hi list: =20 I have been looking through the Varian CTB's looking for the CTB on weight limits and cannot seem to find it. Can anyone direct me to the CTB or does anyone have a copy that they can send. It would be appreciated. =20 Thanks in advance! =20 Garry --Boundary_(ID_o61PI77EDAKnwUAQHkvYmQ) Content-type: text/html; charset=us-ascii Content-transfer-encoding: quoted-printable

Jerry, et. al.

Many years ago, on an ETR couch, we = had an instance where a therapist was lowering a very large (300++) patient at = max rate. The couch (of course) hit the limit switch and the jacking screw = was stripped and ruined. For that reason, whenever we have a 300+ pounder, = the therapists are instructed to be extremely careful to start and stop the = couch lift in a slow ramping manner. (Otherwise, the one day downtime will be = their fault) Haven’t had a problem since. (Knocking on = wood)

Good thread,

Stephen

-----Original = Message-----
From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net] On Behalf Of Maddox, Buford J
Sent: Wednesday, May 12, 2004 1:00 = PM
To: 'Patrick Wong = (VICC)'; 'GARRYANGEL@aol.com'
Cc: = linac-eng@plato.aristotle.net
Subject: RE: varian Table = Weight Limits

 

Note that the 440 lb limit = is the basic lifting capacity.  This is set by the motor current limit, I think.  There are lower limits for different parts of the = couch, probably based on potential failures, as described in the manuals = and on the stickers on the couch top.  The plywood service top is = necessary because concentrated forces are not allowed on the carbon fiber mesh.  Limits may also change with age and radiation history.  This is an area needing frequent and careful = PMI.

 

Once had a very large = patient hitching in a jerky manner along an ETR couch,  caused the = tennis racquet (and patient) to fall into the couch top.  = Large people tend to move in this manner, which I think would be risky with the = carbon fiber tops.  

 

Good topic for this = forum.

 

Jerry

 -----Original Message-----
From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Patrick Wong (VICC)
Sent: Tuesday, May 11, 2004 6:18 = PM
To: = 'GARRYANGEL@aol.com'
Cc: = linac-eng@plato.aristotle.net
Subject: RE: varian Table = Weight Limits

Hi Garry

You can find the treatment = couch safety precaution information in Clinac-Safety manual, P/N 1104957-01, = Page 3-21 and also find in 

in Exact Couch-User Guide/maintenance manual for Couch and Couch top, P/N 1104201-02, Page = 3-3.

Basically, it said maximum = weight up to 440 pounds lying on the couch top.

I hope it = help. 

 

Patrick = Wong  C.T.
Radiotherapy Service = Technologist
Dept. Of medical = Physics
Vancouver Island Cancer = Centre
2410 Lee Avenue =
Victoria B.C. = Canada
V8R 6V5
Tel:(250) 519-5500 = X-3737
Fax.(250)519-2024

-----Original Message-----
From: GARRYANGEL@aol.com [mailto:GARRYANGEL@aol.com]
Sent: Tuesday, May 11, 2004 12:13 = PM
To: = linac-eng@plato.aristotle.net
Subject: varian Table = Weight Limits

Hi list:

 

I have been looking through = the Varian CTB's looking for the CTB on weight limits and cannot seem to = find it. Can anyone direct me to the CTB or does anyone have a copy that they can = send. It would be appreciated.

 

Thanks in = advance!

 

Garry

=00 --Boundary_(ID_o61PI77EDAKnwUAQHkvYmQ)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXM000BBAGUS5@hubbard.azu.nl>; Wed, 12 May 2004 22:05:27 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004051222052621261 ; Wed, 12 May 2004 22:05:26 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id WAA24919; Wed, 12 May 2004 22:05:42 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma024847; Wed, 12 May 2004 22:05:21 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id NAA16526 for linac-eng-list; Wed, 12 May 2004 13:16:25 -0500 (CDT) Received: from cwav01.cw.bc.ca (mail2.cw.bc.ca [207.23.159.180]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id NAA16521 for ; Wed, 12 May 2004 13:16:24 -0500 (CDT) Received: From server17.bccancer.bc.ca ([205.233.164.254]) by cwav01.cw.bc.ca (WebShield SMTP v4.5 MR1a); id 1084385721367; Wed, 12 May 2004 11:15:21 -0700 Received: by SERVER17 with Internet Mail Service (5.5.2653.19) id ; Wed, 12 May 2004 11:14:18 -0700 Date: Wed, 12 May 2004 11:18:42 -0700 From: "Patrick Wong (VICC)" Subject: RE: varian Table Weight Limits Sender: owner-linac-eng@plato.aristotle.net To: "'Bisevac, Simeon'" , "'GARRYANGEL@aol.com'" Cc: linac-eng@plato.aristotle.net Message-id: <6BAF4D075F07D411B30900508B94CBA007A4F89C@SERVER20> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_knRHEaPCnm/V50Gp71LiFA)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 12 May 2004 11:18:42 -0700 From: "Patrick Wong (VICC)" Subject: RE: varian Table Weight Limits Sender: owner-linac-eng@plato.aristotle.net To: "'Bisevac, Simeon'" , "'GARRYANGEL@aol.com'" Cc: linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_knRHEaPCnm/V50Gp71LiFA) Content-type: text/plain; CHARSET=US-ASCII Hi All, That's a good question in term of liability and warranty purposes from Varian. I don't know which manual is the correct weight limit. My suggestion is to check the exact couch that you have to see there is a warning label indicated that what is the maximum weight limit for all various components used on the couch. Unless the machine more than ten years old otherwise you have to check with your Varian local service resp. or from Varian Medical Oncology. Our machines all had a yellow warning label indicated the maximum weight limit for the carbon fiber couch top is 440 pounds and also indicated other weight limit for misc. components. The RT don't have to spend time to find out the weight limit as it indicated in front of the couch. Thanks Patrick -----Original Message----- From: Bisevac, Simeon [mailto:SimeonB@UIC.EDU] Sent: Wednesday, May 12, 2004 10:25 AM To: Patrick Wong (VICC); 'GARRYANGEL@aol.com' Cc: linac-eng@plato.aristotle.net Subject: RE: varian Table Weight Limits Hi All The clinac safety manual (p/n 1104957-01 page 3-21) shows the exact couch limit to be 400 pounds. The exact couch maintenance manual (p/n 1104201-02 page 3-3) shows it to be 440 pounds. Is there a misprint in one of my books? If not, which one is the correct weight limit? Thanks Simeon Bisevac University of Ilinois Med. Cnt. Rad. Onc. Chicago, IL -----Original Message----- From: Patrick Wong (VICC) [mailto:PWong@bccancer.bc.ca] Sent: Tuesday, May 11, 2004 5:18 PM To: 'GARRYANGEL@aol.com' Cc: linac-eng@plato.aristotle.net Subject: RE: varian Table Weight Limits Hi Garry You can find the treatment couch safety precaution information in Clinac-Safety manual, P/N 1104957-01, Page 3-21 and also find in in Exact Couch-User Guide/maintenance manual for Couch and Couch top, P/N 1104201-02, Page 3-3. Basically, it said maximum weight up to 440 pounds lying on the couch top. I hope it help. Patrick Wong C.T. Radiotherapy Service Technologist Dept. Of medical Physics Vancouver Island Cancer Centre 2410 Lee Avenue Victoria B.C. Canada V8R 6V5 Tel:(250) 519-5500 X-3737 Fax.(250)519-2024 -----Original Message----- From: GARRYANGEL@aol.com [mailto:GARRYANGEL@aol.com] Sent: Tuesday, May 11, 2004 12:13 PM To: linac-eng@plato.aristotle.net Subject: varian Table Weight Limits Hi list: I have been looking through the Varian CTB's looking for the CTB on weight limits and cannot seem to find it. Can anyone direct me to the CTB or does anyone have a copy that they can send. It would be appreciated. Thanks in advance! Garry ****************************EMAIL DISCLAIMER****************************This e-mail and any files transmitted with it may be confidential and are intended solely for the use of the individual or entity to whom they are addressed. If you are not the intended recipient or the individual responsible for delivering the e-mail to the intended recipient, any disclosure, copying, distribution or any action taken or omitted to be taken in reliance on it, is strictly prohibited. If you have received this e-mail in error, please delete it and notify the sender or contact Health Information Management 312.413.4947. --Boundary_(ID_knRHEaPCnm/V50Gp71LiFA) Content-type: text/html Message
Hi All,
That's a good question in term of liability and warranty purposes from Varian.
I don't know which manual is the correct weight limit.
My suggestion is to check the exact couch that you have to see there is a warning label indicated that what is the maximum
weight limit for all various components used on the couch. Unless the machine more than ten years old otherwise you have to check with your
Varian local service resp. or from Varian Medical Oncology.
Our machines all had a yellow warning label indicated the maximum weight limit for the carbon fiber couch top is 440 pounds and also indicated
other weight limit for misc. components. The RT don't have to spend time to find out the weight limit as it indicated in front of the couch.
 
Thanks
Patrick
-----Original Message-----
From: Bisevac, Simeon [mailto:SimeonB@UIC.EDU]
Sent: Wednesday, May 12, 2004 10:25 AM
To: Patrick Wong (VICC); 'GARRYANGEL@aol.com'
Cc: linac-eng@plato.aristotle.net
Subject: RE: varian Table Weight Limits

Hi All
 
The  clinac safety manual (p/n 1104957-01 page 3-21) shows the exact couch limit to be 400 pounds.
The exact couch maintenance manual (p/n 1104201-02 page 3-3) shows it to be 440 pounds.
Is there a misprint in one of my books?  If not, which one is the correct weight limit? 
Thanks
 
Simeon Bisevac
University of Ilinois Med. Cnt.
Rad. Onc.
Chicago, IL
-----Original Message-----
From: Patrick Wong (VICC) [mailto:PWong@bccancer.bc.ca]
Sent: Tuesday, May 11, 2004 5:18 PM
To: 'GARRYANGEL@aol.com'
Cc: linac-eng@plato.aristotle.net
Subject: RE: varian Table Weight Limits

Hi Garry
You can find the treatment couch safety precaution information in Clinac-Safety manual, P/N 1104957-01, Page 3-21 and also find in 
in Exact Couch-User Guide/maintenance manual for Couch and Couch top, P/N 1104201-02, Page 3-3.
Basically, it said maximum weight up to 440 pounds lying on the couch top.
I hope it help. 
 

Patrick Wong  C.T.
Radiotherapy Service Technologist
Dept. Of medical Physics
Vancouver Island Cancer Centre
2410 Lee Avenue
Victoria B.C. Canada
V8R 6V5
Tel:(250) 519-5500 X-3737
Fax.(250)519-2024

-----Original Message-----
From: GARRYANGEL@aol.com [mailto:GARRYANGEL@aol.com]
Sent: Tuesday, May 11, 2004 12:13 PM
To: linac-eng@plato.aristotle.net
Subject: varian Table Weight Limits

Hi list:
 
I have been looking through the Varian CTB's looking for the CTB on weight limits and cannot seem to find it. Can anyone direct me to the CTB or does anyone have a copy that they can send. It would be appreciated.
 
Thanks in advance!
 
Garry

****************************EMAIL DISCLAIMER****************************This e-mail and any files transmitted with it may be confidential and are intended solely for the use of the individual or entity to whom they are addressed. If you are not the intended recipient or the individual responsible for delivering the e-mail to the intended recipient, any disclosure, copying, distribution or any action taken or omitted to be taken in reliance on it, is strictly prohibited. If you have received this e-mail in error, please delete it and notify the sender or contact Health Information Management 312.413.4947.

--Boundary_(ID_knRHEaPCnm/V50Gp71LiFA)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXM00203AWKKX@hubbard.azu.nl>; Wed, 12 May 2004 22:14:46 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004051222144321451 ; Wed, 12 May 2004 22:14:43 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id WAA26090; Wed, 12 May 2004 22:15:00 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma026063; Wed, 12 May 2004 22:14:49 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id NAA16687 for linac-eng-list; Wed, 12 May 2004 13:25:33 -0500 (CDT) Received: from mail5.hs.uab.edu (msgmail5.hs.uab.edu [164.111.99.114]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id NAA16683 for ; Wed, 12 May 2004 13:25:31 -0500 (CDT) Received: from msgia.hs.uab.edu not authenticated [10.20.2.43] by mail5.hs.uab.edu with NetMail SMTP Agent $Revision: 3.22.1.13 $ on Novell NetWare; Wed, 12 May 2004 13:24:30 -0500 Received: from INET-MTA by msgia.hs.uab.edu with Novell_GroupWise; Wed, 12 May 2004 13:24:30 -0500 Date: Wed, 12 May 2004 13:24:15 -0500 From: Stephen Jordan Subject: FOIL / CARR I/L update Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.5.1 Content-type: text/plain; charset=US-ASCII Content-disposition: inline Content-transfer-encoding: 7bit Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 12 May 2004 13:24:15 -0500 From: Stephen Jordan Subject: FOIL / CARR I/L update Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Content-disposition: inline X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Last night I managed to clean, flush, and lubricate the carrousel bearing. I tightened every piece of hardware I could access. No more I/Ls. Thanks to all that responded! BTW, After locating the roller guide, I'm glad that wasn't the problem....EGAD! Steve  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXM0093PE30YA@hubbard.azu.nl>; Wed, 12 May 2004 23:23:26 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004051223232322694 ; Wed, 12 May 2004 23:23:23 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id XAA04907; Wed, 12 May 2004 23:23:40 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma004791; Wed, 12 May 2004 23:23:09 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id OAA18310 for linac-eng-list; Wed, 12 May 2004 14:29:27 -0500 (CDT) Received: from mail3.tenethealth.com ([199.222.14.16]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id OAA18306 for ; Wed, 12 May 2004 14:29:25 -0500 (CDT) Received: from tenhdcthvscan02.tenethealth.net ([172.18.167.162]) by mail3.tenethealth.com (8.12.10/8.12.10) with SMTP id i4CJRJkY003877; Wed, 12 May 2004 14:27:20 -0500 Received: from tenhdcthemx51.tenethealth.net(172.18.167.215) by tenhdcthvscan02.tenethealth.net via csmap id 62449d8e_a44a_11d8_9f2f_0002b3d786d7_4815; Wed, 12 May 2004 14:27:19 -0500 (CDT) Received: from tenbmcthemx01.tenethealth.net ([10.30.2.48]) by tenhdcthemx51.tenethealth.net with Microsoft SMTPSVC(5.0.2195.6713); Wed, 12 May 2004 14:27:10 -0500 Date: Wed, 12 May 2004 14:27:04 -0500 From: "Kyle, John" Subject: RE: varian Table Weight Limits Sender: owner-linac-eng@plato.aristotle.net To: "Maddox, Buford J" , "Patrick Wong (VICC)" , GARRYANGEL@aol.com Cc: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_c3ruBUed36tw98hjq+hqGA)" Precedence: bulk X-MimeOLE: Produced By Microsoft Exchange V6.0.6249.0 content-class: urn:content-classes:message Thread-Topic: varian Table Weight Limits Thread-Index: AcQ4VUGXDVZ4qmjbTcKOzaXhP9gayAAAYnhw X-OriginalArrivalTime: 12 May 2004 19:27:10.0456 (UTC) FILETIME=[1EE08F80:01C43857] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 12 May 2004 14:27:04 -0500 From: "Kyle, John" Subject: RE: varian Table Weight Limits Sender: owner-linac-eng@plato.aristotle.net To: "Maddox, Buford J" , "Patrick Wong (VICC)" , GARRYANGEL@aol.com Cc: linac-eng@plato.aristotle.net X-MimeOLE: Produced By Microsoft Exchange V6.0.6249.0 content-class: urn:content-classes:message Thread-Topic: varian Table Weight Limits Thread-Index: AcQ4VUGXDVZ4qmjbTcKOzaXhP9gayAAAYnhw X-OriginalArrivalTime: 12 May 2004 19:27:10.0456 (UTC) FILETIME=[1EE08F80:01C43857] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This is a multi-part message in MIME format. --Boundary_(ID_c3ruBUed36tw98hjq+hqGA) Content-type: text/plain; charset=us-ascii Content-transfer-encoding: quoted-printable I think the lower limit may address having the table extended.=20 -----Original Message----- From: Maddox, Buford J [mailto:JMADDOX@LROC.HARVARD.EDU]=20 Sent: Wednesday, May 12, 2004 12:00 PM To: 'Patrick Wong (VICC)'; 'GARRYANGEL@aol.com' Cc: linac-eng@plato.aristotle.net Subject: RE: varian Table Weight Limits Note that the 440 lb limit is the basic lifting capacity. This is set by the motor current limit, I think. There are lower limits for different parts of the couch, probably based on potential failures, as described in the manuals and on the stickers on the couch top. The plywood service top is necessary because concentrated forces are not allowed on the carbon fiber mesh. Limits may also change with age and radiation history. This is an area needing frequent and careful PMI. =20 Once had a very large patient hitching in a jerky manner along an ETR couch, caused the tennis racquet (and patient) to fall into the couch top. Large people tend to move in this manner, which I think would be risky with the carbon fiber tops. =20 =20 Good topic for this forum. =20 Jerry -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Patrick Wong (VICC) Sent: Tuesday, May 11, 2004 6:18 PM To: 'GARRYANGEL@aol.com' Cc: linac-eng@plato.aristotle.net Subject: RE: varian Table Weight Limits Hi Garry You can find the treatment couch safety precaution information in Clinac-Safety manual, P/N 1104957-01, Page 3-21 and also find in=20 in Exact Couch-User Guide/maintenance manual for Couch and Couch top, P/N 1104201-02, Page 3-3. Basically, it said maximum weight up to 440 pounds lying on the couch top. I hope it help.=20 =20 Patrick Wong C.T.=20 Radiotherapy Service Technologist=20 Dept. Of medical Physics=20 Vancouver Island Cancer Centre=20 2410 Lee Avenue=20 Victoria B.C. Canada=20 V8R 6V5=20 Tel:(250) 519-5500 X-3737=20 Fax.(250)519-2024=20 -----Original Message----- From: GARRYANGEL@aol.com [mailto:GARRYANGEL@aol.com] Sent: Tuesday, May 11, 2004 12:13 PM To: linac-eng@plato.aristotle.net Subject: varian Table Weight Limits Hi list: =20 I have been looking through the Varian CTB's looking for the CTB on weight limits and cannot seem to find it. Can anyone direct me to the CTB or does anyone have a copy that they can send. It would be appreciated. =20 Thanks in advance! =20 Garry --Boundary_(ID_c3ruBUed36tw98hjq+hqGA) Content-type: text/html; charset=us-ascii Content-transfer-encoding: quoted-printable Message
I think the lower limit may = address having=20 the table extended.
-----Original Message-----
From: Maddox, = Buford J=20 [mailto:JMADDOX@LROC.HARVARD.EDU]
Sent: Wednesday, May 12, = 2004=20 12:00 PM
To: 'Patrick Wong (VICC)';=20 'GARRYANGEL@aol.com'
Cc:=20 linac-eng@plato.aristotle.net
Subject: RE: varian Table = Weight=20 Limits

Note that the 440 lb limit is = the basic=20 lifting capacity.  This is set by the motor current limit, I=20 think.  There are lower limits for different parts of = the=20 couch, probably based on potential failures, as described in the = manuals=20 and on the stickers on the couch top.  The plywood service top is = necessary because concentrated forces are not allowed on the = carbon=20 fiber mesh.  Limits may also change with age and radiation=20 history.  This is an area needing frequent and careful = PMI.
 
Once had a very large patient = hitching in=20 a jerky manner along an ETR couch,  caused the tennis racquet (and = patient)=20 to fall into the couch top.  Large people tend to move in = this=20 manner, which I think would be risky with the carbon fiber=20 tops.  
 
Good topic for this = forum.
 
Jerry
 -----Original Message-----
From:=20 owner-linac-eng@plato.aristotle.net=20 [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of = Patrick Wong=20 (VICC)
Sent: Tuesday, May 11, 2004 6:18 PM
To:=20 'GARRYANGEL@aol.com'
Cc:=20 linac-eng@plato.aristotle.net
Subject: RE: varian Table = Weight=20 Limits

Hi=20 Garry
You can find = the treatment=20 couch safety precaution information in Clinac-Safety manual, P/N = 1104957-01,=20 Page 3-21 and also find in 
in Exact = Couch-User=20 Guide/maintenance manual for Couch and Couch top, P/N 1104201-02, = Page=20 3-3.
Basically, it = said maximum=20 weight up to 440 pounds lying on the couch top.
I hope it=20 help. 
 

Patrick Wong  C.T. =
Radiotherapy Service = Technologist
Dept. Of medical Physics =
Vancouver Island Cancer Centre =
2410 Lee Avenue
Victoria B.C. Canada
V8R 6V5
Tel:(250)=20 519-5500 X-3737
Fax.(250)519-2024

-----Original Message-----
From: = GARRYANGEL@aol.com=20 [mailto:GARRYANGEL@aol.com]
Sent: Tuesday, May 11, 2004 = 12:13=20 PM
To: linac-eng@plato.aristotle.net
Subject: = varian=20 Table Weight Limits

Hi list:
 
I have been looking through the Varian CTB's looking for the = CTB on=20 weight limits and cannot seem to find it. Can anyone direct me to = the CTB=20 or does anyone have a copy that they can send. It would be=20 appreciated.
 
Thanks in advance!
 
=
Garry
--Boundary_(ID_c3ruBUed36tw98hjq+hqGA)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXM00FF4IE5AL@hubbard.azu.nl>; Thu, 13 May 2004 00:56:31 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004051300562924234 ; Thu, 13 May 2004 00:56:29 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id AAA14734; Thu, 13 May 2004 00:56:46 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma014723; Thu, 13 May 2004 00:56:32 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id QAA22966 for linac-eng-list; Wed, 12 May 2004 16:09:02 -0500 (CDT) Received: from dalwhinnie.chhlth.govt.nz ([203.163.70.2]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id QAA22959 for ; Wed, 12 May 2004 16:09:00 -0500 (CDT) Received: from NTCHAVIMSS (ntchavimss.chhlth.govt.nz [159.117.27.250]) by dalwhinnie.chhlth.govt.nz (8.12.10/8.12.10/SuSE Linux 0.7) with ESMTP id i4CL9noT011318 for ; Thu, 13 May 2004 09:09:49 +1200 Received: from SMTPGATE.CHHLTH.GOVT.NZ ([159.117.20.14]) by NTCHAVIMSS with InterScan Messaging Security Suite; Thu, 13 May 2004 09:07:18 +1200 Received: from CHCH2-MTA by SMTPGATE.CHHLTH.GOVT.NZ with Novell_GroupWise; Thu, 13 May 2004 09:08:26 +1200 Date: Thu, 13 May 2004 09:08:12 +1200 From: Dave Pinchin Subject: Re: 2100C (C1) FOIL and CARR I/Ls Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.0.4 Content-type: text/plain; charset=US-ASCII Content-disposition: inline Content-transfer-encoding: 8bit Precedence: bulk X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id QAA22960 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 13 May 2004 09:08:12 +1200 From: Dave Pinchin Subject: Re: 2100C (C1) FOIL and CARR I/Ls Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Content-disposition: inline X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id QAA22960 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f G'day, Another scenario, Very similar. K1 (ss) relay. Being a triac and optically driven we have found several instances of this fellow conducting intermittently on one half cycle but reliably on the other. This would change on a fraction of a second time scale. When the thing half waves the input power transformer saturates and loses it's reactance, giving large currents and cooking the resistor. While the SSR is failing it will give bursts of going/stopping and makes lots of noise. The relay is available as a spare, we carry one and a spare board. Dave. >>> 13/05/04 01:51:46 >>> Steven We have had similar problems in the past. Ours was a result of the solid state relay K1 on the Filter and Target Interlock board. This device turned on and off quickly like a light dimmer at the beginning of power up. This caused a reduced voltage to the stepper motor driving the carrousel turntable. This reduced voltage, in turn, reduced the drive torque and it would skip steps (that's where the jerky noise comes from). The 120Vac that passes through this bad SS relay is switching the power to a transformer. The resultant current spikes can burn up a series resistor that the schematic lists as an NTC device. The turntable itself can be lubed by removing the square piece of lead at the very front of the machine, gantry at 180 IEC. I believe moding up 20e places the 6x flattening filter at the front under that lead block. It has a cover over it and is the most protected. The bearing is then visible and can be lubed with Tri-Flow. Hope this helps Jim Allin London Regional Cancer Centre London, Ontario Canada ********************************************************************** This email and attachments have been scanned for content and viruses and is believed to be clean This email or attachments may contain confidential or legally privileged information intended for the sole use of the addressee(s). Any use, redistribution, disclosure, or reproduction of this message, except as intended, is prohibited. If you received this email in error, please notify the sender and remove all copies of the message, including any attachments. Any views or opinions expressed in this email (unless otherwise stated) may not represent those of Canterbury District Health Board **********************************************************************  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXM004H0RBYP3@hubbard.azu.nl>; Thu, 13 May 2004 04:09:36 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004051304093426320 ; Thu, 13 May 2004 04:09:34 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id EAA00080; Thu, 13 May 2004 04:09:50 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xmaa00057; Thu, 13 May 2004 04:09:26 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id TAA25598 for linac-eng-list; Wed, 12 May 2004 19:05:06 -0500 (CDT) Received: from ms-smtp-04-eri0.southeast.rr.com (ms-smtp-04-lbl.southeast.rr.com [24.25.9.103]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id TAA25594 for ; Wed, 12 May 2004 19:05:04 -0500 (CDT) Received: from RICHARDJKLEIN (clt75-044.carolina.rr.com [24.93.75.44]) by ms-smtp-04-eri0.southeast.rr.com (8.12.10/8.12.7) with SMTP id i4D050C8023145 for ; Wed, 12 May 2004 20:05:00 -0400 (EDT) Date: Wed, 12 May 2004 20:05:03 -0400 From: Richie Klein Subject: MLC fault Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <003801c4387d$f0d7abb0$6500a8c0@RICHARDJKLEIN> MIME-version: 1.0 X-Mailer: Microsoft Outlook Express 6.00.2800.1409 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_H8mbFJRUXqYJECnIeHczIg)" Precedence: bulk X-MSMail-Priority: Normal X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 X-Virus-Scanned: Symantec AntiVirus Scan Engine X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 *** EOOH *** Date: Wed, 12 May 2004 20:05:03 -0400 From: Richie Klein Subject: MLC fault Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-MSMail-Priority: Normal X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 X-Virus-Scanned: Symantec AntiVirus Scan Engine X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 This is a multi-part message in MIME format. --Boundary_(ID_H8mbFJRUXqYJECnIeHczIg) Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: quoted-printable Hi, I have a Varian MMLC that faults once a day (usually early a.m.) and = during a port film. The hyperterminal lists an mpc106 as the most repeated fault item. The therapists just re-initialyze and go on.=20 I have replaced the fiber optic cable and adjusted the carrage micro = switches. The problem will re-occur the next day. This has happened at gantry angles of varian 180 and 270 deg.=20 PWM tests and autocycle both run o.k. with no faults. As a side question, the secinit2A/B.txt files have been moved to the r/v = computer from the controller. I should be able to delete them and then = re-initialyze and have them rebuilt. The intialyzation fails unless i = put the files back into the computer. Any help in these matters would be greatly appreciated. Thanks Richie Klein RS&A --Boundary_(ID_H8mbFJRUXqYJECnIeHczIg) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: quoted-printable
Hi,
 
I have a Varian MMLC that faults once a = day=20 (usually early a.m.) and during a port film.
The hyperterminal lists an mpc106 as = the most=20 repeated fault item.
The therapists just re-initialyze and = go on.=20
I have replaced the fiber optic cable = and adjusted=20 the carrage micro switches. The problem will re-occur the next = day.
This has happened at gantry angles of = varian 180=20 and 270 deg.
PWM tests and autocycle both run o.k. = with no=20 faults.
 
As a side question, the secinit2A/B.txt = files have=20 been moved to the r/v computer from the controller. I should be able to = delete=20 them and then re-initialyze and have them rebuilt. The intialyzation = fails=20 unless i put the files back into the computer.
 
Any help in these matters would be = greatly=20 appreciated.
 
Thanks
 
Richie Klein
RS&A
--Boundary_(ID_H8mbFJRUXqYJECnIeHczIg)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXN00MRECVDSM@hubbard.azu.nl>; Thu, 13 May 2004 11:55:10 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004051311550808032 ; Thu, 13 May 2004 11:55:08 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id LAA28626; Thu, 13 May 2004 11:55:25 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma028578; Thu, 13 May 2004 11:54:53 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id DAA29526 for linac-eng-list; Thu, 13 May 2004 03:10:51 -0500 (CDT) Received: from mail20.nhs.uk (mail20.nhs.uk [62.6.139.212]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id DAA29522 for ; Thu, 13 May 2004 03:10:48 -0500 (CDT) Received: from [10.191.254.3] (helo=relayint2.nhs.uk) by mail20.nhs.uk with esmtp (MTC MTA) id 1BOBIE-0000Ah-Lv for linac-eng@plato.aristotle.net; Thu, 13 May 2004 09:10:14 +0100 Received: from relay.nhs.uk (194.62.42.142) by relayint2.nhs.uk (Syntegra-I2 7.0.008) id 409511E6003095AE for linac-eng@plato.aristotle.net; Thu, 13 May 2004 09:10:14 +0100 Received: from smtp.leedsth.nhs.uk (163.160.107.2) by relay.nhs.uk (Syntegra-2 7.0.008) (authenticated as smtp_leedsth_nhs_uk@es2002.nhs.uk) id 40A2338700043AE3 for linac-eng@plato.aristotle.net; Thu, 13 May 2004 09:10:14 +0100 Received: from LTH-MTA by smtp.leedsth.nhs.uk with Novell_GroupWise; Thu, 13 May 2004 09:10:00 +0100 Date: Thu, 13 May 2004 09:09:47 +0100 From: Steve Watkins Subject: Re: Elekta linacs Sender: owner-linac-eng@plato.aristotle.net To: Richard.Newby@gstt.sthames.nhs.uk Cc: "<" Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.0.2 Content-type: text/plain; charset=US-ASCII Content-disposition: inline Content-transfer-encoding: 8bit Precedence: bulk X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id DAA29523 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 13 May 2004 09:09:47 +0100 From: Steve Watkins Subject: Re: Elekta linacs Sender: owner-linac-eng@plato.aristotle.net To: Richard.Newby@gstt.sthames.nhs.uk Cc: "<" Content-disposition: inline X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id DAA29523 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Bet nobody got that one!! >>> 05/12/04 11:56AM >>> Hi LIsters Firstly, thanks to all those that responded to my cry for help, your suggestions were most welcome. Secondly, the solution! A cable had not been secured in the gantry drum. This cable flopped onto the HP Phase semirigid cable and over a period of time damaged the joint. As the gantry rotated to 100deg the cable rubbed on the semirigid causing the problem (HP phase changed requiring an extra 4 turns on magnetron tuner to compensate. This was out of tolerance causing the trip). We have now tied the cable down which allows us to operate normally, but we will have to replace the semirigid at some point in the future. Rick -- **************************************************************************************** Please note that the new telephone number for both Guy's and St. Thomas'is 020 7188 7188. **************************************************************************************** Disclaimer **************************************************************************************** This e-mail may contain confidential and / or privileged information. Unless otherwise specified, the opinions expressed herein do not necessarily represent those of Guy's and St Thomas Hospital NHS Trust or any of its subsidiaries. If you are not the intended recipient (or have received this e-mail in error) please notify the sender and destroy this e-mail immediately. Any unauthorised copying, disclosure or distribution of the material in this e-mail is strictly prohibited. ****************************************************************************************  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXN00KZ1NXZX1@hubbard.azu.nl>; Thu, 13 May 2004 15:54:08 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004051315540617365 ; Thu, 13 May 2004 15:54:06 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id PAA16049; Thu, 13 May 2004 15:54:23 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma015968; Thu, 13 May 2004 15:53:55 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id GAA03138 for linac-eng-list; Thu, 13 May 2004 06:54:15 -0500 (CDT) Received: from mail1.aaa.dk ([212.130.128.220]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id GAA03134 for ; Thu, 13 May 2004 06:54:13 -0500 (CDT) Received: from MAILGATE-MTA by mail1.aaa.dk with Novell_GroupWise; Thu, 13 May 2004 13:53:42 +0200 Date: Thu, 13 May 2004 13:43:37 +0200 From: "Ole G. Nielsen" Subject: Low Dose Rate Elekta SL25. Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.5.1 Content-type: text/plain; charset=US-ASCII Content-disposition: inline Content-transfer-encoding: 7bit Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 13 May 2004 13:43:37 +0200 From: "Ole G. Nielsen" Subject: Low Dose Rate Elekta SL25. Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Content-disposition: inline X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Dear List-members, we have for quiet some months got an intermediant failure on SL25 = at certain gantry angles the dose rate drops and we get the interlock "Low Dose Rate". It only happens on the lowest xray which is 8 MvR. By adjusting the magnetron tuner and Low Power Phase Shifter we can find a new setting of the LP PH SH at maximum dose rate. After some hours/days/months the same thing happen and we find that LP PH SH need to be calibrated close to the original settings. Then after some time back again and so on.....After adjusting the LP PH SH we do a 360 degree rotational test of dose rate with beam on and in our case the dose rate change from 290 to 340 which I thing is acceptable. We do have changed most things in the LP PH SH circuits (except for the RF antenne) and we are a bit confused. I would appreciate very much if any of you have got any suggestions ? Thank you in advance Ole G. Ole G. Nielsen Dept. of Medical Physics Aarhus University Hospital Phone +45 8949 2487 Fax +45 8949 2590  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXN00B2GWFWA0@hubbard.azu.nl>; Thu, 13 May 2004 18:57:39 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004051318573623006 ; Thu, 13 May 2004 18:57:36 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA17487; Thu, 13 May 2004 18:57:53 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma017440; Thu, 13 May 2004 18:57:32 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id JAA06107 for linac-eng-list; Thu, 13 May 2004 09:55:20 -0500 (CDT) Received: from ismssclu1.umcaz.edu (smtp.umcaz.edu [198.60.159.10]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id JAA06103 for ; Thu, 13 May 2004 09:55:19 -0500 (CDT) Received: from xchange2k.umcaz.edu ([170.87.50.78]) by ismssclu1 with InterScan Messaging Security Suite; Thu, 13 May 2004 07:54:43 -0700 Date: Thu, 13 May 2004 07:54:43 -0700 From: "Watters, Dan" Subject: Siemens MD-2 Collimator Enable Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <9AE191E1E625364CA06663EA675208592466E6@xchange2k> MIME-version: 1.0 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_odNFWD+5ZCP8BG9QD6+geA)" Precedence: bulk X-MimeOLE: Produced By Microsoft Exchange V6.0.6487.1 content-class: urn:content-classes:message Thread-Topic: Siemens MD-2 Collimator Enable Thread-Index: AcQ4+jiDeN7UK72PRZOmKrRswyfWAA== X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 13 May 2004 07:54:43 -0700 From: "Watters, Dan" Subject: Siemens MD-2 Collimator Enable Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-MimeOLE: Produced By Microsoft Exchange V6.0.6487.1 content-class: urn:content-classes:message Thread-Topic: Siemens MD-2 Collimator Enable Thread-Index: AcQ4+jiDeN7UK72PRZOmKrRswyfWAA== X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This is a multi-part message in MIME format. --Boundary_(ID_odNFWD+5ZCP8BG9QD6+geA) Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: quoted-printable We have a MD-2 with MLC that is not allowing collimator rotation when = any accessory is plugged into the number 3 slot on the accessory holder. = I have swapped the accessory holder with our other decommissioned MD-2, = swapped the accessory PCB, and the I/O Relay PCB. Having a = decommissioned machine down the hallway is a luxury. Output from the = Accessory PCB at B22 is the same, +5V, with the reticle in slot 1, a = wedge in slot 2, or a electron cone in slot 3. These accessories were = inserted one at a time. Because of this I don't suspect a wiring = problem from the G41 to the S31. I have also checked the wiring from = the H2 to the G41 and it is good. The codes off of the cones are being = read correctly and the machine will treat electrons. I do not get a = collimator enable light on the I/O Relay PCB whenever a cone is put in = slot 3. We have a connectorized S31. I've run out of ideas on this = one. Any help would be appreciated. =20 Thank you, =20 Dan Watters Radiology Engineering University Medical Center Tucson, Arizona =20 --Boundary_(ID_odNFWD+5ZCP8BG9QD6+geA) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: quoted-printable
We = have a MD-2 with=20 MLC that is not allowing collimator rotation when any accessory is = plugged into=20 the number 3 slot on the accessory holder.  I have swapped the = accessory=20 holder with our other decommissioned MD-2, swapped the accessory PCB, = and the=20 I/O Relay PCB.  Having a decommissioned machine down the hallway is = a=20 luxury.  Output from the Accessory PCB at B22 is the same, +5V, = with the=20 reticle in slot 1, a wedge in slot 2, or a electron cone in slot = 3.  These=20 accessories were inserted one at a time.  Because of this I = don't=20 suspect a wiring problem from the G41 to the S31.  I have also = checked the=20 wiring from the H2 to the G41 and it is good.  The codes off of the = cones are being read correctly and the machine will treat = electrons. =20 I do not get a collimator enable light on the I/O Relay PCB whenever a = cone is=20 put in slot 3.  We have a connectorized S31.  I've run out of = ideas on=20 this one.  Any help would be appreciated.
 
Thank=20 you,
 
Dan=20 Watters
Radiology=20 Engineering
University Medical=20 Center
Tucson,=20 Arizona 
--Boundary_(ID_odNFWD+5ZCP8BG9QD6+geA)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXO00FWA06NJ3@hubbard.azu.nl>; Thu, 13 May 2004 20:18:28 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004051320182224300 ; Thu, 13 May 2004 20:18:22 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id UAA26283; Thu, 13 May 2004 20:18:39 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma026263; Thu, 13 May 2004 20:18:14 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id LAA08046 for linac-eng-list; Thu, 13 May 2004 11:22:16 -0500 (CDT) Received: from chs-exchsv2.covhealth.com (exchangesvr.covhealth.com [199.250.66.2]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id LAA08040 for ; Thu, 13 May 2004 11:22:15 -0500 (CDT) Received: by chs-exchsv2.covhealth.com with Internet Mail Service (5.5.2653.19) id ; Thu, 13 May 2004 11:21:42 -0500 Date: Thu, 13 May 2004 11:21:42 -0500 From: "Lockhart, Ryan" Subject: Image and database servers Sender: owner-linac-eng@plato.aristotle.net To: 'clinac listserve' Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_IKHHCT5VvHfQIISiECxGrQ)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 13 May 2004 11:21:42 -0500 From: "Lockhart, Ryan" Subject: Image and database servers Sender: owner-linac-eng@plato.aristotle.net To: 'clinac listserve' X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_IKHHCT5VvHfQIISiECxGrQ) Content-type: text/plain; CHARSET=US-ASCII We have two accelerators and we're using Millenium MLC's, elcipse, and varis. Because of changes in our IT department, the Image and Database servers need to be moved from the computer room in our hospital to a room in our treatment center. The way things look, there will be no IT support for daily backup of the info or for troubleshooting these servers. Does anybody out there maintain their own servers and do you have any advice for the biomed (me) who will get called when things go wrong? Any specific problems anybody has had with their servers/networks? Thanks Ryan Lockhart Covenant Medical Center Waterloo, IA --Boundary_(ID_IKHHCT5VvHfQIISiECxGrQ) Content-type: text/html Content-transfer-encoding: quoted-printable Image and database servers

We have two accelerators and we're = using Millenium MLC's, elcipse, and varis.  Because of changes in = our IT department, the Image and Database servers need to be moved from = the computer room in our hospital to a room in our treatment = center.  The way things look, there will be no IT support for = daily backup of the info or for troubleshooting these servers.  = Does anybody out there maintain their own servers and do you have any = advice for the biomed (me) who will get called when things go = wrong?  Any specific problems anybody has had with their = servers/networks?

Thanks

Ryan Lockhart
Covenant Medical Center
Waterloo, IA

--Boundary_(ID_IKHHCT5VvHfQIISiECxGrQ)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXO00LKU2Z0TR@hubbard.azu.nl>; Thu, 13 May 2004 21:18:54 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004051321185225355 ; Thu, 13 May 2004 21:18:52 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id VAA03465; Thu, 13 May 2004 21:19:09 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma003351; Thu, 13 May 2004 21:18:52 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id MAA09310 for linac-eng-list; Thu, 13 May 2004 12:33:58 -0500 (CDT) Received: from email-out-01.biz.rr.com (email-out-01.biz.rr.com [24.30.200.26]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id MAA09303 for ; Thu, 13 May 2004 12:33:55 -0500 (CDT) Received: from fep03.biz.rr.com (fep03.biz.rr.com [24.30.201.200]) by email-out-01.biz.rr.com (8.12.10/8.12.10) with ESMTP id i4DHXqed010764 for ; Thu, 13 May 2004 13:33:53 -0400 (EDT) Received: from pent4 ([24.173.18.166]) by fep03.biz.rr.com with ESMTP id <20040513173352.URWW914.fep03.biz.rr.com@pent4> for ; Thu, 13 May 2004 13:33:52 -0400 Date: Thu, 13 May 2004 12:33:40 -0500 From: Thomas McCausland Subject: Theratron 780 Timer Keypad Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Reply-to: acceltek@acceltekservice.com Message-id: <40A36B24.7892.754ACF@localhost> MIME-version: 1.0 X-Mailer: Pegasus Mail for Win32 (v3.12c) Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 13 May 2004 12:33:40 -0500 From: Thomas McCausland Subject: Theratron 780 Timer Keypad Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Reply-to: acceltek@acceltekservice.com X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f We have a customer that has a Theratron 780 Cobalt unit. We don't service the unit, but they have asked us to try to locate a replacement part for it. The front panel has a small, square, telephone like keypad that is used for entering the treatment time. This keypad has white keys with a black outer body. This keypad is worn out, and the number '1' is no longer functional. We were unable to get any useful identification data off the keypad, and MDS Nordion, who now services the units, says they no longer stock the keypad. Does anyone have any data on this keypad, or by chance, have one buried in a spares drawer somewhere? Thanks in advance. Thomas W. McCausland AccelTek Inc. 281-652-0059 888-619-8811  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXO00MJ63DS5I@hubbard.azu.nl>; Thu, 13 May 2004 21:27:38 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004051321273625474 ; Thu, 13 May 2004 21:27:36 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id VAA04373; Thu, 13 May 2004 21:27:53 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma004324; Thu, 13 May 2004 21:27:35 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id MAA09202 for linac-eng-list; Thu, 13 May 2004 12:28:33 -0500 (CDT) Received: from cwav01.cw.bc.ca (mail2.cw.bc.ca [207.23.159.180]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id MAA09198 for ; Thu, 13 May 2004 12:28:32 -0500 (CDT) Received: From server17.bccancer.bc.ca ([205.233.164.254]) by cwav01.cw.bc.ca (WebShield SMTP v4.5 MR1a); id 1084469249683; Thu, 13 May 2004 10:27:29 -0700 Received: by SERVER17 with Internet Mail Service (5.5.2653.19) id ; Thu, 13 May 2004 10:26:23 -0700 Date: Thu, 13 May 2004 10:30:50 -0700 From: Denny Yu Subject: RE: Low Dose Rate Elekta SL25. Sender: owner-linac-eng@plato.aristotle.net To: "'Ole G. Nielsen'" , linac-eng@plato.aristotle.net Message-id: <6BAF4D075F07D411B30900508B94CBA012B03AA8@SERVER20> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_w+riv5hE9G4kymPto54scw)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 13 May 2004 10:30:50 -0700 From: Denny Yu Subject: RE: Low Dose Rate Elekta SL25. Sender: owner-linac-eng@plato.aristotle.net To: "'Ole G. Nielsen'" , linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_w+riv5hE9G4kymPto54scw) Content-type: text/plain; charset=iso-8859-1 Dear Ole, We had similar problem recently on our SLi20 recently, the problem was intermittent. Someone thought the tuner drive gear was wearing out and thus caused the phase problem. We found the control cable ( connecting to tuner drive in the maggi, which is fed through the drum reeling located behind the SF6 gauge) was rubbing to the jockey (?) wheel everytime gantry rotated to this angle. Our 8 years old m/c starts getting cabling problem on the reeling area which caused many other problems as well. By inspecting/replacing/ tightening /relaxing the strain or relocating the clamping spot on some of the cable harness bailed us out a few times. Of course, your case may be unique, and who knows? Good luck! Denny Yu Radiation Svc technologist FVCC, Surrey, B.C. Canada -----Original Message----- From: Ole G. Nielsen [mailto:ole@akh.aaa.dk] Sent: Thursday, May 13, 2004 4:44 AM To: linac-eng@plato.aristotle.net Subject: Low Dose Rate Elekta SL25. Dear List-members, we have for quiet some months got an intermediant failure on SL25 = at certain gantry angles the dose rate drops and we get the interlock "Low Dose Rate". It only happens on the lowest xray which is 8 MvR. By adjusting the magnetron tuner and Low Power Phase Shifter we can find a new setting of the LP PH SH at maximum dose rate. After some hours/days/months the same thing happen and we find that LP PH SH need to be calibrated close to the original settings. Then after some time back again and so on.....After adjusting the LP PH SH we do a 360 degree rotational test of dose rate with beam on and in our case the dose rate change from 290 to 340 which I thing is acceptable. We do have changed most things in the LP PH SH circuits (except for the RF antenne) and we are a bit confused. I would appreciate very much if any of you have got any suggestions ? Thank you in advance Ole G. Ole G. Nielsen Dept. of Medical Physics Aarhus University Hospital Phone +45 8949 2487 Fax +45 8949 2590 --Boundary_(ID_w+riv5hE9G4kymPto54scw) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: quoted-printable RE: Low Dose Rate Elekta SL25.

Dear Ole,

We had similar problem recently on our SLi20 = recently, the problem was intermittent. Someone thought the tuner drive = gear was wearing out and thus caused the phase problem. We found the = control cable ( connecting to tuner drive in the maggi, which is fed = through the drum reeling located behind the SF6 gauge) was rubbing to = the jockey (?) wheel everytime gantry rotated to this angle. Our 8 = years old m/c starts getting cabling problem on the reeling area which = caused many other problems as well. By inspecting/replacing/ tightening = /relaxing the strain or relocating the clamping spot on some of the = cable harness bailed us out a few times. Of course, your case may be = unique, and who knows?

Good luck!

Denny Yu
Radiation Svc technologist
FVCC,
Surrey, B.C.  Canada

-----Original Message-----
From: Ole G. Nielsen [mailto:ole@akh.aaa.dk]
Sent: Thursday, May 13, 2004 4:44 AM
To: linac-eng@plato.aristotle.net
Subject: Low Dose Rate Elekta SL25.


Dear List-members,
we have for quiet some months got an intermediant = failure on SL25 =3D at
certain gantry angles the dose rate drops and we get = the interlock "Low
Dose Rate". It only happens on the lowest xray = which is 8 MvR.

By adjusting the magnetron tuner and Low Power Phase = Shifter we can
find a new setting of the LP PH SH at maximum dose = rate. After some
hours/days/months the same thing happen and we find = that LP PH SH need
to be calibrated close to the original settings. = Then after some time
back again and so on.....After adjusting the LP PH = SH we do a 360 degree
rotational test of dose rate with beam on and in our = case the dose rate
change from 290 to 340  which I thing is = acceptable.

We do have changed most things in the LP PH SH = circuits (except for the
RF antenne) and we are a bit confused. I would = appreciate very much if
any of you have got any suggestions ?

Thank you in advance
Ole G.


Ole G. Nielsen
Dept. of Medical Physics
Aarhus University Hospital
Phone +45 8949 2487
Fax +45 8949 2590

--Boundary_(ID_w+riv5hE9G4kymPto54scw)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXO00L3L4EITR@hubbard.azu.nl>; Thu, 13 May 2004 21:49:32 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004051321493025974 ; Thu, 13 May 2004 21:49:30 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id VAA06849; Thu, 13 May 2004 21:49:47 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma006837; Thu, 13 May 2004 21:49:36 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id NAA09900 for linac-eng-list; Thu, 13 May 2004 13:00:11 -0500 (CDT) Received: from imo-d03.mx.aol.com (imo-d03.mx.aol.com [205.188.157.35]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id NAA09895 for ; Thu, 13 May 2004 13:00:10 -0500 (CDT) Received: from Mlaa@aol.com by imo-d03.mx.aol.com (mail_out_v37_r1.3.) id y.66.40698520 (3964) for ; Thu, 13 May 2004 13:59:34 -0400 (EDT) Date: Thu, 13 May 2004 13:59:33 -0400 (EDT) From: Mlaa@aol.com Subject: Cl 6/100 filament timer Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <66.40698520.2dd51185@aol.com> MIME-version: 1.0 X-Mailer: 9.0 for Windows sub 5024 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_mEoi5ipvdp5MH6+wwYPY1w)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 13 May 2004 13:59:33 -0400 (EDT) From: Mlaa@aol.com Subject: Cl 6/100 filament timer Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f --Boundary_(ID_mEoi5ipvdp5MH6+wwYPY1w) Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7bit Hi to everyone on the list, Does anyone know of a source for a CL 6/100 filament timer, or has anyone come up with a replacement mod for one? It seems that the source for these has quit makeing them. Any help would be appreciated. Thanks again, Mike Liddicote Accelerator Associates --Boundary_(ID_mEoi5ipvdp5MH6+wwYPY1w) Content-type: text/html; charset=US-ASCII Content-transfer-encoding: quoted-printable
Hi to everyone on the list,
    Does anyone know of a source for a CL= 6/100 filament timer, or has anyone come up with a replacement mod for one?=   It seems that the source for these has quit makeing them.  Any h= elp would be appreciated.
Thanks again,
Mike Liddicote
Accelerator Associates
--Boundary_(ID_mEoi5ipvdp5MH6+wwYPY1w)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXO0040P58JRC@hubbard.azu.nl>; Thu, 13 May 2004 22:07:36 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004051322073526308 ; Thu, 13 May 2004 22:07:35 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id WAA09150; Thu, 13 May 2004 22:07:52 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma009120; Thu, 13 May 2004 22:07:44 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id NAA10682 for linac-eng-list; Thu, 13 May 2004 13:27:39 -0500 (CDT) Received: from hotmail.com (bay9-dav25.bay9.hotmail.com [64.4.46.82]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id NAA10678 for ; Thu, 13 May 2004 13:27:38 -0500 (CDT) Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Thu, 13 May 2004 11:27:05 -0700 Received: from 207.87.83.25 by bay9-dav25.bay9.hotmail.com with DAV; Thu, 13 May 2004 18:27:05 +0000 Date: Thu, 13 May 2004 14:29:54 -0400 From: "Jose R. Villegas" Subject: RE: Image and database servers In-reply-to: Sender: owner-linac-eng@plato.aristotle.net X-Sender: villegaj@hotmail.com To: "'Lockhart, Ryan'" , 'clinac listserve' Message-id: MIME-version: 1.0 X-Mailer: Microsoft Office Outlook, Build 11.0.5510 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_Yy3D4Td/SoHLa+G2gvHolA)" Precedence: bulk X-Originating-IP: [207.87.83.25] X-Originating-Email: [villegaj@hotmail.com] Thread-Index: AcQ5DfDEekRMqFkgQ8SmSWtVf3L1YQACPrdQ X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.132 X-OriginalArrivalTime: 13 May 2004 18:27:05.0554 (UTC) FILETIME=[E499EB20:01C43917] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 13 May 2004 14:29:54 -0400 From: "Jose R. Villegas" Subject: RE: Image and database servers In-reply-to: Sender: owner-linac-eng@plato.aristotle.net X-Sender: villegaj@hotmail.com To: "'Lockhart, Ryan'" , 'clinac listserve' X-Originating-IP: [207.87.83.25] X-Originating-Email: [villegaj@hotmail.com] Thread-Index: AcQ5DfDEekRMqFkgQ8SmSWtVf3L1YQACPrdQ X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.132 X-OriginalArrivalTime: 13 May 2004 18:27:05.0554 (UTC) FILETIME=[E499EB20:01C43917] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This is a multi-part message in MIME format. --Boundary_(ID_Yy3D4Td/SoHLa+G2gvHolA) Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 7bit Ryan, First thing you have to do is to worry about your daily backup. If you loose anything or your database or OS get corrupted you will have to recover form your backup. Make sure you get at least a fire safe to keep your tapes. Keep spare hard drive in case you loose one, and make sue you have a full fault tolerance system implemented (RAID5 etc.) As far as who to call if is for network connectivity or OS issues you have to contact an IT person, if is database problem call VARIAN. Good luck. Jose Villegas _____ From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net] On Behalf Of Lockhart, Ryan Sent: Thursday, May 13, 2004 12:22 PM To: 'clinac listserve'l Subject: Image and database servers We have two accelerators and we're using Millenium MLC's, elcipse, and varis. Because of changes in our IT department, the Image and Database servers need to be moved from the computer room in our hospital to a room in our treatment center. The way things look, there will be no IT support for daily backup of the info or for troubleshooting these servers. Does anybody out there maintain their own servers and do you have any advice for the biomed (me) who will get called when things go wrong? Any specific problems anybody has had with their servers/networks? Thanks Ryan Lockhart Covenant Medical Center Waterloo, IA --Boundary_(ID_Yy3D4Td/SoHLa+G2gvHolA) Content-type: text/html; charset=us-ascii Content-transfer-encoding: quoted-printable Image and database servers

Ryan,

 

First thing you have to do is to = worry about your daily backup. If you loose anything or your database or OS = get corrupted you will have to recover form your backup. Make sure you get = at least a fire safe to keep your tapes. Keep spare hard drive in case you loose = one, and make sue you have a full fault tolerance system implemented (RAID5 = etc…) As far as who to call if is for network connectivity or OS issues you = have to contact an IT person, if is database problem call = VARIAN.

 

Good = luck.

 

Jose = Villegas

 

From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net] On Behalf Of Lockhart, Ryan
Sent: Thursday, May 13, = 2004 12:22 PM
To: 'clinac = listserve'l
Subject: Image and = database servers

 

We have two accelerators and we're using Millenium MLC's, elcipse, and varis.  Because of changes in our IT department, the Image and = Database servers need to be moved from the computer room in our hospital to a = room in our treatment center.  The way things look, there will be no IT = support for daily backup of the info or for troubleshooting these servers.  = Does anybody out there maintain their own servers and do you have any advice = for the biomed (me) who will get called when things go wrong?  Any specific problems anybody has had with their = servers/networks?

Thanks

Ryan = Lockhart
Covenant = Medical Center
Waterloo, IA

--Boundary_(ID_Yy3D4Td/SoHLa+G2gvHolA)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXP00HTE6LG2B@hubbard.azu.nl>; Fri, 14 May 2004 11:34:32 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004051411342807971 ; Fri, 14 May 2004 11:34:28 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id LAA07115; Fri, 14 May 2004 11:34:45 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma007010; Fri, 14 May 2004 11:34:08 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id CAA20898 for linac-eng-list; Fri, 14 May 2004 02:42:43 -0500 (CDT) Received: from mail22.nhs.uk (mail22.nhs.uk [62.6.139.218]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id CAA20894 for ; Fri, 14 May 2004 02:42:41 -0500 (CDT) Received: from [10.191.254.3] (helo=relayint2.nhs.uk) by mail22.nhs.uk with esmtp (MTC MTA) id 1BOXKc-0007kD-Hi for linac-eng@plato.aristotle.net; Fri, 14 May 2004 08:42:10 +0100 Received: from relay.nhs.uk (194.62.42.142) by relayint2.nhs.uk (Syntegra-I2 7.0.008) id 409511E60036252C for linac-eng@plato.aristotle.net; Fri, 14 May 2004 08:42:10 +0100 Received: from ubht.swest.nhs.uk (194.101.53.2) by relay.nhs.uk (Syntegra-2 7.0.008) id 40A36A32000596F1 for linac-eng@plato.aristotle.net; Fri, 14 May 2004 08:42:10 +0100 Received: by ubhtfw1.ubht.swest.nhs.uk id <119052>; Fri, 14 May 2004 08:18:41 +0100 Date: Fri, 14 May 2004 08:41:48 +0100 From: "White, Malcolm" Subject: Re CL6/100 Filament Timer Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <04May14.081841bst.119052@ubhtfw1.ubht.swest.nhs.uk> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 14 May 2004 08:41:48 +0100 From: "White, Malcolm" Subject: Re CL6/100 Filament Timer Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Aren't these just the same as Omron timers supplied by RS Components et al? Certainly the one scrapped at Cheltenham a year or so ago was an industry standard type and there really shouldn't be any difficulty working out the wiring arrangement. -- Malcolm White  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXP00K438VWJR@hubbard.azu.nl>; Fri, 14 May 2004 12:24:41 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004051412243809700 ; Fri, 14 May 2004 12:24:38 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id MAA16143; Fri, 14 May 2004 12:24:55 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma016086; Fri, 14 May 2004 12:24:22 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id DAA22028 for linac-eng-list; Fri, 14 May 2004 03:42:24 -0500 (CDT) Received: from mail23.nhs.uk (mail23.nhs.uk [62.6.139.221]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id DAA22023 for ; Fri, 14 May 2004 03:42:22 -0500 (CDT) Received: from [10.191.254.3] (helo=relayint1.nhs.uk) by mail23.nhs.uk with esmtp (MTC MTA) id 1BOYGN-0006dU-Hi for linac-eng@plato.aristotle.net; Fri, 14 May 2004 09:41:51 +0100 Received: from relay.nhs.uk (194.62.42.143) by relayint1.nhs.uk (Syntegra-I1 7.0.008) id 40926E2F00335328 for linac-eng@plato.aristotle.net; Fri, 14 May 2004 09:41:51 +0100 Received: from mercury.University-b.wmids.nhs.uk (193.240.116.176) by relay.nhs.uk (Syntegra-3 7.0.008) (authenticated as smtp_uhb_nhs_uk@es2002.nhs.uk) id 40A36A9000069CF8; Fri, 14 May 2004 09:41:51 +0100 Received: by MERCURY with Internet Mail Service (5.5.2657.72) id ; Fri, 14 May 2004 09:41:48 +0100 Date: Fri, 14 May 2004 09:41:36 +0100 From: Graham Chalmers Subject: RE: Low Dose Rate Elekta SL25. Sender: owner-linac-eng@plato.aristotle.net To: "'Ole G. Nielsen'" , linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_SYzdzSDQlNdotZ2cAT3xTQ)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 14 May 2004 09:41:36 +0100 From: Graham Chalmers Subject: RE: Low Dose Rate Elekta SL25. Sender: owner-linac-eng@plato.aristotle.net To: "'Ole G. Nielsen'" , linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_SYzdzSDQlNdotZ2cAT3xTQ) Content-type: text/plain; CHARSET=US-ASCII Have you change the LP Phase shifter itself? We had one jam up once. Have you checked that LPPhase position is always going back to the same place as indicated by LPPhase posn pot? Certainly on the older 75/14 machines there was an anti backlash circuit so the LPPhase only settled from one direction (I'm not sure if this is the same on an SL25) Are the rf probes secure with GA and likewise their cables? Also I would wonder if you have problems in the magnetron tuner itself with GA. As suggested to another member of the group, see if altering the power conditions on the magnetron e.g. chargerate and mag.mag.I (With BEAM OFF!) to settle on a slightly different tuner position would help. We saw a similar issue on a high energy electron beam and it appeared there was a step jump in tuning or f from the magnetron at 90 degrees GA at a certain number of turns which was averted by the above. I should add we had the magnetron changed later (by Elekta under warrenty) just to make sure. Best wishes Graham -----Original Message----- From: Ole G. Nielsen [mailto:ole@akh.aaa.dk] Sent: 13 May 2004 12:44 To: linac-eng@plato.aristotle.net Subject: Low Dose Rate Elekta SL25. Dear List-members, we have for quiet some months got an intermediant failure on SL25 = at certain gantry angles the dose rate drops and we get the interlock "Low Dose Rate". It only happens on the lowest xray which is 8 MvR. By adjusting the magnetron tuner and Low Power Phase Shifter we can find a new setting of the LP PH SH at maximum dose rate. After some hours/days/months the same thing happen and we find that LP PH SH need to be calibrated close to the original settings. Then after some time back again and so on.....After adjusting the LP PH SH we do a 360 degree rotational test of dose rate with beam on and in our case the dose rate change from 290 to 340 which I thing is acceptable. We do have changed most things in the LP PH SH circuits (except for the RF antenne) and we are a bit confused. I would appreciate very much if any of you have got any suggestions ? Thank you in advance Ole G. Ole G. Nielsen Dept. of Medical Physics Aarhus University Hospital Phone +45 8949 2487 Fax +45 8949 2590 DISCLAIMER: This e-mail contains proprietary information some or all of which may be confidential or legally privileged. It is for the exclusive use of the intended recipient(s) only. If an addressing or transmission error has misdirected this e-mail and you are not the intended recipient(s), please notify the author by replying to this e-mail. If you are not the intended recipient you must not use, disclose, distribute, copy, print, or rely on this e-mail, as this may be unlawful. --Boundary_(ID_SYzdzSDQlNdotZ2cAT3xTQ) Content-type: text/html Content-transfer-encoding: quoted-printable RE: Low Dose Rate Elekta SL25.

Have you change the LP Phase shifter itself? We had = one jam up once. Have you checked that LPPhase position is always going = back to the same place as indicated by LPPhase posn pot? Certainly on = the older 75/14 machines there was an anti backlash circuit so the = LPPhase only settled from one direction (I'm not sure if this is the = same on an SL25)

Are the rf probes secure with GA and likewise their = cables?

Also I would wonder if you have problems in the = magnetron tuner itself with GA. As suggested to another member of the = group, see if altering the power conditions on the magnetron e.g. = chargerate and mag.mag.I (With BEAM OFF!) to settle on a slightly = different tuner position would help.

We saw a similar issue on a high energy electron beam = and it appeared there was a step jump in tuning or f from the magnetron = at 90 degrees GA at a certain number of turns which was averted by the = above. I should add we had the magnetron changed later (by Elekta under = warrenty) just to make sure.

Best wishes
 
Graham
-----Original Message-----
From: Ole G. Nielsen [mailto:ole@akh.aaa.dk]
Sent: 13 May 2004 12:44
To: linac-eng@plato.aristotle.net
Subject: Low Dose Rate Elekta SL25.

Dear List-members,
we have for quiet some months got an intermediant = failure on SL25 =3D at
certain gantry angles the dose rate drops and we get = the interlock "Low
Dose Rate". It only happens on the lowest xray = which is 8 MvR.

By adjusting the magnetron tuner and Low Power Phase = Shifter we can
find a new setting of the LP PH SH at maximum dose = rate. After some
hours/days/months the same thing happen and we find = that LP PH SH need
to be calibrated close to the original settings. = Then after some time
back again and so on.....After adjusting the LP PH = SH we do a 360 degree
rotational test of dose rate with beam on and in our = case the dose rate
change from 290 to 340  which I thing is = acceptable.

We do have changed most things in the LP PH SH = circuits (except for the
RF antenne) and we are a bit confused. I would = appreciate very much if
any of you have got any suggestions ?

Thank you in advance
Ole G.


Ole G. Nielsen
Dept. of Medical Physics
Aarhus University Hospital
Phone +45 8949 2487
Fax +45 8949 2590
DISCLAIMER: This e-mail contains proprietary = information some or all of which may be confidential or legally = privileged. It is for the exclusive use of the intended recipient(s) = only. If an addressing or transmission error has misdirected this = e-mail and you are not the intended recipient(s), please notify the = author by replying to this e-mail. If you are not the intended = recipient you must not use, disclose, distribute, copy, print, or rely = on this e-mail, as this may be unlawful.

--Boundary_(ID_SYzdzSDQlNdotZ2cAT3xTQ)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXP0033GC6C5S@hubbard.azu.nl>; Fri, 14 May 2004 13:35:03 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004051413350011830 ; Fri, 14 May 2004 13:35:00 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id NAA27444; Fri, 14 May 2004 13:35:17 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma027357; Fri, 14 May 2004 13:34:55 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id EAA22715 for linac-eng-list; Fri, 14 May 2004 04:49:52 -0500 (CDT) Received: from mail22.nhs.uk (mail22.nhs.uk [62.6.139.218]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id EAA22711 for ; Fri, 14 May 2004 04:49:50 -0500 (CDT) Received: from [10.191.254.3] (helo=relayint2.nhs.uk) by mail22.nhs.uk with esmtp (MTC MTA) id 1BOZJf-000102-QR for linac-eng@plato.aristotle.net; Fri, 14 May 2004 10:49:19 +0100 Received: from relay.nhs.uk (194.62.42.144) by relayint2.nhs.uk (Syntegra-I2 7.0.008) id 409511E600373AD2 for linac-eng@plato.aristotle.net; Fri, 14 May 2004 10:49:19 +0100 Received: from relay.wales.nhs.uk (194.189.180.1) by relay.nhs.uk (Syntegra-4 7.0.008) id 40A36AED0006F7BB for linac-eng@plato.aristotle.net; Fri, 14 May 2004 10:49:19 +0100 Received: from india.velindre-tr.wales.nhs.uk (137.11.127.76) by relay.wales.nhs.uk (NPlex 2.0.108) for linac-eng@plato.aristotle.net; Fri, 14 May 2004 10:49:21 +0100 Received: by india.velindre-tr.wales.nhs.uk with Internet Mail Service (5.5.2653.19) id ; Fri, 14 May 2004 10:49:06 +0100 Date: Fri, 14 May 2004 10:49:00 +0100 From: John Wike Subject: Re: Image and database servers Sender: owner-linac-eng@plato.aristotle.net To: 'clinac listserve' Message-id: <10ADED4909C8674391B2C9347AEA5729143CA6@india.velindre-tr.wales.nhs.uk> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_8/4TfQb9VcLly8Ghf6hQyg)" Precedence: bulk X-Internal-ID: 409F734D0004C2F0 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 14 May 2004 10:49:00 +0100 From: John Wike Subject: Re: Image and database servers Sender: owner-linac-eng@plato.aristotle.net To: 'clinac listserve' X-Internal-ID: 409F734D0004C2F0 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_8/4TfQb9VcLly8Ghf6hQyg) Content-type: text/plain; charset=iso-8859-1 Ryan, In addition to Jose's points we check the log files (database dump and Arcserve backup) every day. We also dump the server application event log every day with a program called dumpevt and check it for RAID controller faults. We once had a VARiS server lose 2 drives before we noticed and while the engineer was here a 3rd drive failed so we lost everything. Luckily we had the backups but we lost several days work while everything was re-installed. It appeared that when the first drive failed the RAID controller hot swapped it and took it off line so there was no indication that it had failed other than viewing the event log or checking which drives were in use every day. By sharing the directories where the various log files are held (readonly of course) we can do these checks from the comfort of our own desks. For QA purposes we have a log book where we tick off the results of the checks. -- John Wike Velindre Hospital, Cardiff john.wike@velindre-tr.wales.nhs.uk -----Original Message----- From: Jose R. Villegas [mailto:villegaj@hotmail.com] Sent: 13 May 2004 19:30 To: 'Lockhart, Ryan'; 'clinac listserve' Subject: RE: Image and database servers Ryan, First thing you have to do is to worry about your daily backup. If you loose anything or your database or OS get corrupted you will have to recover form your backup. Make sure you get at least a fire safe to keep your tapes. Keep spare hard drive in case you loose one, and make sue you have a full fault tolerance system implemented (RAID5 etc...) As far as who to call if is for network connectivity or OS issues you have to contact an IT person, if is database problem call VARIAN. Good luck. Jose Villegas _____ From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net] On Behalf Of Lockhart, Ryan Sent: Thursday, May 13, 2004 12:22 PM To: 'clinac listserve'l Subject: Image and database servers We have two accelerators and we're using Millenium MLC's, elcipse, and varis. Because of changes in our IT department, the Image and Database servers need to be moved from the computer room in our hospital to a room in our treatment center. The way things look, there will be no IT support for daily backup of the info or for troubleshooting these servers. Does anybody out there maintain their own servers and do you have any advice for the biomed (me) who will get called when things go wrong? Any specific problems anybody has had with their servers/networks? Thanks Ryan Lockhart Covenant Medical Center Waterloo, IA --Boundary_(ID_8/4TfQb9VcLly8Ghf6hQyg) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: quoted-printable Image and database servers
Ryan,
 
In=20 addition to Jose's points we check the log files (database dump and = Arcserve=20 backup) every day. We also dump the server application event log every = day with=20 a program called dumpevt and check it for RAID controller faults. We = once had a=20 VARiS server lose 2 drives before we noticed and while the engineer was = here a=20 3rd drive failed so we lost everything. Luckily we had the backups but = we lost=20 several days work while everything was re-installed. It appeared that = when the=20 first drive failed the RAID controller hot swapped it and took it off = line so=20 there was no indication that it had failed other than viewing the event = log or=20 checking which drives were in use every day.
 
By=20 sharing the directories where the various log files are held (readonly = of=20 course) we can do these checks from the comfort of our own desks. For = QA=20 purposes we have a log book where we tick off the results of the=20 checks.
 


--
John=20 Wike
Velindre Hospital, = Cardiff=20
john.wike@velindre-tr.wales.nhs.uk=20

-----Original Message-----
From: Jose R. Villegas=20 [mailto:villegaj@hotmail.com]
Sent: 13 May 2004 = 19:30
To:=20 'Lockhart, Ryan'; 'clinac listserve'
Subject: RE: Image and = database=20 servers

Ryan,

 

First = thing you have=20 to do is to worry about your daily backup. If you loose anything or = your=20 database or OS get corrupted you will have to recover form your = backup. Make=20 sure you get at least a fire safe to keep your tapes. Keep spare hard = drive in=20 case you loose one, and make sue you have a full fault tolerance = system=20 implemented (RAID5 etc...) As far as who to call if is for network=20 connectivity or OS issues you have to contact an IT person, if is = database=20 problem call VARIAN.

 

Good=20 luck.

 

Jose=20 Villegas

 

From:=20 owner-linac-eng@plato.aristotle.net=20 [mailto:owner-linac-eng@plato.aristotle.net] On Behalf Of Lockhart, = Ryan
Sent: Thursday, May 13, 2004 = 12:22=20 PM
To: 'clinac=20 listserve'l
Subject: Image=20 and database servers

 

We have two = accelerators and we're=20 using Millenium MLC's, elcipse, and varis.  Because of changes = in our IT=20 department, the Image and Database servers need to be moved from the = computer=20 room in our hospital to a room in our treatment center.  The way = things=20 look, there will be no IT support for daily backup of the info or for = troubleshooting these servers.  Does anybody out there maintain = their own=20 servers and do you have any advice for the biomed (me) who will get = called=20 when things go wrong?  Any specific problems anybody has had = with their=20 servers/networks?

Thanks=20

Ryan=20 Lockhart=20
Covenant=20 Medical Center
Waterloo,=20 IA=20

--Boundary_(ID_8/4TfQb9VcLly8Ghf6hQyg)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXP00BGFFF84J@hubbard.azu.nl>; Fri, 14 May 2004 14:46:19 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004051414461314216 ; Fri, 14 May 2004 14:46:13 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id OAA10467; Fri, 14 May 2004 14:46:30 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma010341; Fri, 14 May 2004 14:46:11 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id FAA23309 for linac-eng-list; Fri, 14 May 2004 05:54:14 -0500 (CDT) Received: from NGATE01.qe2-hsc.ns.ca (ngate01.qe2-hsc.ns.ca [142.176.37.4]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id FAA23304 for ; Fri, 14 May 2004 05:54:11 -0500 (CDT) Received: from sdc_dom-MTA by NGATE01.qe2-hsc.ns.ca with Novell_GroupWise; Fri, 14 May 2004 07:53:58 -0300 Date: Fri, 14 May 2004 07:53:42 -0300 From: Carl Murphy Subject: Re: Image and database servers Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.5.2 Beta Content-type: text/plain; charset=US-ASCII Content-disposition: inline Content-transfer-encoding: 7bit Precedence: bulk X-Guinevere: 2.0.13 ; Capital District Hea X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 14 May 2004 07:53:42 -0300 From: Carl Murphy Subject: Re: Image and database servers Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Content-disposition: inline X-Guinevere: 2.0.13 ; Capital District Hea X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Ryan: We encountered this same issue several years ago when several of our institutions amalgamated in to one large institution. Now our Varis and Vision servers are kept in what is called the "Shared Data Centre". We had no choice in this matter, and at first, we were very reluctant. However, since then , we've learned to cope with this. There are advantages to having your servers in this type of area, including security, proper cooling, and management by IT professionals. The Shared Data Centre can only be accessed by certain staff and even we can not access it without being accompanied by a Systems Administrator. It is under very high security, so one of the cleaners won't bump your machine and send it offline. We also have two people in our institution that are employed as Backup Operators. They are in charge of any backup and restoration of all the servers located in the SDC. This basically comes down to a power struggle. Most IT departments want control over any computer type assetts in any institution - whether they need it or not. If you have a good relationship with your IT department and have a good case on why they should not have anything to do with your servers, I would suggest putting something down on paper, and you and your managers meet with the IT managers to discuss this. It also helps to get Varian involved. Sometimes meeting with an outside source (the vendor) lets them know how serious you are about this. No institution would risk comprimising critical patient data. If you explain to your IT dept that loss of patient data could jeopardize the results of any impending or future legal issues regarding patient treatment - you may get their attention. These systems must be managed, and if they will not provide you with the support you need, then you have to provide that support yourself. As a side note to what John Wike mentioned below, when Varian installs Varis, they should be installing a script which dumps the database every night. You should make sure this is happening. One of our old databases was never dumped because there was an error in the script. One thing to keep in mind is that if another department is going to manage your servers, you should try to have a good relationship with them. We are very fortunate in that matter in that whenever any critical updates or Service Packs are installed on our servers, I always receive a call from the Systems Admin and we schedule a time to perform any maintenance. Good luck, stick to your guns, and do what you can to maintain control. Carl Murphy _________________________________ Carl Murphy, C.E.T. Senior Linear Accelerator Service Technologist Medical Physics Department Nova Scotia Cancer Centre QEII Health Sciences Centre Halifax, Nova Scotia, Canada Email: carl.murphy@cdha.nshealth.ca >>> John Wike Friday, May 14, 2004 >>> Ryan, In addition to Jose's points we check the log files (database dump and Arcserve backup) every day. We also dump the server application event log every day with a program called dumpevt and check it for RAID controller faults. We once had a VARiS server lose 2 drives before we noticed and while the engineer was here a 3rd drive failed so we lost everything. Luckily we had the backups but we lost several days work while everything was re-installed. It appeared that when the first drive failed the RAID controller hot swapped it and took it off line so there was no indication that it had failed other than viewing the event log or checking which drives were in use every day. By sharing the directories where the various log files are held (readonly of course) we can do these checks from the comfort of our own desks. For QA purposes we have a log book where we tick off the results of the checks. -- John Wike Velindre Hospital, Cardiff john.wike@velindre-tr.wales.nhs.uk -----Original Message----- From: Jose R. Villegas [mailto:villegaj@hotmail.com] Sent: 13 May 2004 19:30 To: 'Lockhart, Ryan'; 'clinac listserve' Subject: RE: Image and database servers Ryan, First thing you have to do is to worry about your daily backup. If you loose anything or your database or OS get corrupted you will have to recover form your backup. Make sure you get at least a fire safe to keep your tapes. Keep spare hard drive in case you loose one, and make sue you have a full fault tolerance system implemented (RAID5 etc...) As far as who to call if is for network connectivity or OS issues you have to contact an IT person, if is database problem call VARIAN. Good luck. Jose Villegas _____ From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net] On Behalf Of Lockhart, Ryan Sent: Thursday, May 13, 2004 12:22 PM To: 'clinac listserve'l Subject: Image and database servers We have two accelerators and we're using Millenium MLC's, elcipse, and varis. Because of changes in our IT department, the Image and Database servers need to be moved from the computer room in our hospital to a room in our treatment center. The way things look, there will be no IT support for daily backup of the info or for troubleshooting these servers. Does anybody out there maintain their own servers and do you have any advice for the biomed (me) who will get called when things go wrong? Any specific problems anybody has had with their servers/networks? Thanks Ryan Lockhart Covenant Medical Center Waterloo, IA Confidentiality: This email message may contain confidential information and is intended only for the individual named. If you are not the named addressee you should not disseminate, distribute or copy this email. Please notify the sender immediately by email if you have received this email by mistake and delete this email from your system. Email transmissions cannot be guaranteed to be secure or error free as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or contain viruses. The sender therefore does not accept any liability for errors or omissions in the contents of this message that arise as a result of email transmissions. If verification is required please request a hard copy version.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXP00567RVJU3@hubbard.azu.nl>; Fri, 14 May 2004 19:14:12 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004051419140621042 ; Fri, 14 May 2004 19:14:06 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA19518; Fri, 14 May 2004 19:14:24 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma019461; Fri, 14 May 2004 19:14:13 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id KAA27256 for linac-eng-list; Fri, 14 May 2004 10:14:32 -0500 (CDT) Received: from mail22.nhs.uk (mail22.nhs.uk [62.6.139.218]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id KAA27252 for ; Fri, 14 May 2004 10:14:30 -0500 (CDT) Received: from [10.191.254.3] (helo=relayint2.nhs.uk) by mail22.nhs.uk with esmtp (MTC MTA) id 1BOeNr-0000PA-Rl for linac-eng@plato.aristotle.net; Fri, 14 May 2004 16:13:59 +0100 Received: from relay.nhs.uk (194.62.42.144) by relayint2.nhs.uk (Syntegra-I2 7.0.008) id 409511E60039E2C4 for linac-eng@plato.aristotle.net; Fri, 14 May 2004 16:13:59 +0100 Received: from beijing.relay.grampian.scot.nhs.uk (10.251.30.7) by relay.nhs.uk (Syntegra-4 7.0.008) (authenticated as relay_grampian_scot_nhs_uk@es2002.nhs.uk) id 40A4D1D80000A4F6 for linac-eng@plato.aristotle.net; Fri, 14 May 2004 16:13:59 +0100 Received: from athens.arh.grampian.scot.nhs.uk ([9.16.61.18]) by beijing.relay.grampian.scot.nhs.uk with Microsoft SMTPSVC(5.0.2195.6872) ; Fri, 14 May 2004 15:26:01 +0100 Received: by arh.grampian.scot.nhs.uk with Internet Mail Service (5.5.2653.19) id ; Fri, 14 May 2004 15:27:55 +0100 Date: Fri, 14 May 2004 15:29:15 +0100 From: David.Smith@arh.grampian.scot.nhs.uk Subject: Low dose rate after Cal Check on 2100 CD [Scanned By SOPHOS Anti-Virus] Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 7bit Importance: normal Precedence: bulk thread-index: AcQ5v2HjWAzjLsVSTFef7n0knteJrw== Content-Class: urn:content-classes:message X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4927.1200 X-OriginalArrivalTime: 14 May 2004 14:26:01.0656 (UTC) FILETIME=[61DBFB80:01C439BF] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 14 May 2004 15:29:15 +0100 From: David.Smith@arh.grampian.scot.nhs.uk Subject: Low dose rate after Cal Check on 2100 CD [Scanned By SOPHOS Anti-Virus] Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Importance: normal thread-index: AcQ5v2HjWAzjLsVSTFef7n0knteJrw== Content-Class: urn:content-classes:message X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4927.1200 X-OriginalArrivalTime: 14 May 2004 14:26:01.0656 (UTC) FILETIME=[61DBFB80:01C439BF] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f All, We had a strange problem yesterday. All the electron energies and to a lesser extent the photons 6 and 15 MV took a long time to settle at the target doserate of 600mu/min during morning check out, with UDRS interlocks on 4 and 9 MeV. 4 MeV was particularly bad and did not make it to 600 mu/min. We then switched to "Service Mode" and tried running the beams again. This time they reached the target doserates much quicker with no interlocks. The only difference being that in "Service Mode" there is no automatic Cal Check. Still in "Service Mode" we introduced a "Cal Check" before running the beam, and the problem reappeared. The day before everything was ok. Logically as all energies were affected we were initially looking for a common cause Dquing etc. After failing to do so we decided to set up all energies AFC, Gun I, RF Drive and Gun I timing (6 MV only). All energies needed some adjustment (mainly RF was not at optimum value for max doserate). After we finished we repeated running energies with and without "Cal Check" and everything returned to normal i.e. no difference in performance between the two methods. My Question is: Why should running "Cal Check" before a badly set up energy have such a difference on how quickly the servos act to settle the doserate? Dave Smith  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXU00CF5XY8K8@hubbard.azu.nl>; Mon, 17 May 2004 14:13:22 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004051714132015065 ; Mon, 17 May 2004 14:13:20 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id OAA09935; Mon, 17 May 2004 14:13:39 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma009791; Mon, 17 May 2004 14:13:00 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id EAA13222 for linac-eng-list; Mon, 17 May 2004 04:53:39 -0500 (CDT) Received: from imo-m26.mx.aol.com (imo-m26.mx.aol.com [64.12.137.7]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id EAA13217 for ; Mon, 17 May 2004 04:53:38 -0500 (CDT) Received: from GARRYANGEL@aol.com by imo-m26.mx.aol.com (mail_out_v37_r1.3.) id y.c8.47805f74 (3890) for ; Mon, 17 May 2004 05:53:12 -0400 (EDT) Date: Mon, 17 May 2004 05:53:11 -0400 (EDT) From: GARRYANGEL@aol.com Subject: Magnetrons Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: 9.0 for Windows sub 5027 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_9XFSjlt1Bt7FZC3yB3NRgA)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 17 May 2004 05:53:11 -0400 (EDT) From: GARRYANGEL@aol.com Subject: Magnetrons Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f --Boundary_(ID_9XFSjlt1Bt7FZC3yB3NRgA) Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7bit Hello Everyone: I am in need of a 5167 or 5193 or Equivalent magnetron. None of the vendors seem to have any in stock. Thanks in advance !!! Garry --Boundary_(ID_9XFSjlt1Bt7FZC3yB3NRgA) Content-type: text/html; charset=US-ASCII Content-transfer-encoding: quoted-printable
Hello Everyone:
 
I am in need of a  5167 or 5193 or Equivalent magnetron. None= of the vendors seem to have any in stock.  Thanks in advance !!!<= /DIV>
 
Garry
--Boundary_(ID_9XFSjlt1Bt7FZC3yB3NRgA)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXV00KRL1N3RE@hubbard.azu.nl>; Mon, 17 May 2004 15:33:34 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004051715332918441 ; Mon, 17 May 2004 15:33:29 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id PAA26490; Mon, 17 May 2004 15:33:48 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma026287; Mon, 17 May 2004 15:32:53 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id GAA14406 for linac-eng-list; Mon, 17 May 2004 06:41:11 -0500 (CDT) Received: from mail1.aaa.dk ([212.130.128.220]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id GAA14401 for ; Mon, 17 May 2004 06:41:08 -0500 (CDT) Received: from MAILGATE-MTA by mail1.aaa.dk with Novell_GroupWise; Mon, 17 May 2004 13:40:37 +0200 Date: Mon, 17 May 2004 13:40:22 +0200 From: "Ole G. Nielsen" Subject: Relative uptime. Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Cc: =?ISO-8859-1?Q?J=F8rgen=20Petersen?= , =?ISO-8859-1?Q?Lars=20Pr=E6stegaard?= Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.5.1 Content-type: text/plain; charset=US-ASCII Content-disposition: inline Content-transfer-encoding: 7bit Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 17 May 2004 13:40:22 +0200 From: "Ole G. Nielsen" Subject: Relative uptime. Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Cc: =?ISO-8859-1?Q?J=F8rgen=20Petersen?= , =?ISO-8859-1?Q?Lars=20Pr=E6stegaard?= Content-disposition: inline X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Dear Listmembers, our physicists have asked me to broadcast this question = "Has anyone a clinic with modern MLC-equipped linear accelerators from more than one vendor (Siemens, Elekta, or Varian)? If so, could you comment on the relative up-time of Siemens, Elekta, or Varian linear accelerators? If you have other comments they are also very welcome." Thank you in advance Ole G. Nielsen Ole G. Nielsen Dept. of Medical Physics Aarhus University Hospital Phone +45 8949 2487 Fax +45 8949 2590  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXV00KXT1TRRE@hubbard.azu.nl>; Mon, 17 May 2004 15:37:26 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004051715371518611 ; Mon, 17 May 2004 15:37:15 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id PAA27361; Mon, 17 May 2004 15:37:35 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma027251; Mon, 17 May 2004 15:36:56 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id GAA14477 for linac-eng-list; Mon, 17 May 2004 06:49:43 -0500 (CDT) Received: from mail.spectrum-health.org (mail.spectrum-health.org [167.73.110.31]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id GAA14473 for ; Mon, 17 May 2004 06:49:42 -0500 (CDT) Received: from dcntmta02.spectrum-health.org ([10.3.5.109]) by mail.spectrum-health.org (SAVSMTP 3.0.0.44) with SMTP id M2004051707510912525 for ; Mon, 17 May 2004 07:51:09 -0400 Received: by dcntmta02.spectrum-health.org with Internet Mail Service (5.5.2657.72) id ; Mon, 17 May 2004 07:49:16 -0400 Date: Mon, 17 May 2004 07:49:07 -0400 From: neville.wiles@spectrum-health.org Subject: Siemens Digital RF Driver. Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <69CF5FC5BF741642A2F1889E6519E2F864CE51@dcmsmsg03.spectrum-health.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_whhi27FfsoGF+rbcWodJLA)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 17 May 2004 07:49:07 -0400 From: neville.wiles@spectrum-health.org Subject: Siemens Digital RF Driver. Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_whhi27FfsoGF+rbcWodJLA) Content-type: text/plain; charset=iso-8859-1 Hello, Does anyone know of a vendor that can rebuild Siemens RF Drivers? I have a 4 year old one that is losing output power intermittanly. Thanks in advance. Neville Wiles Spectrum Health Grand Rapids, MI 616 391-3639 --Boundary_(ID_whhi27FfsoGF+rbcWodJLA) Content-type: text/html; charset=iso-8859-1
Hello,
 
Does anyone know of a vendor that can rebuild Siemens RF Drivers?  I have a 4 year old one that is losing output power intermittanly.
 
Thanks in advance.
 
Neville Wiles
Spectrum Health
Grand Rapids, MI
616 391-3639
 
--Boundary_(ID_whhi27FfsoGF+rbcWodJLA)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXV005UA663LE@hubbard.azu.nl>; Mon, 17 May 2004 17:11:02 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004051717105922542 ; Mon, 17 May 2004 17:10:59 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id RAA17356; Mon, 17 May 2004 17:11:18 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma017277; Mon, 17 May 2004 17:10:52 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id IAA15575 for linac-eng-list; Mon, 17 May 2004 08:01:57 -0500 (CDT) Received: from web25103.mail.ukl.yahoo.com (web25103.mail.ukl.yahoo.com [217.12.10.51]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id IAA15569 for ; Mon, 17 May 2004 08:01:55 -0500 (CDT) Received: from [202.92.164.39] by web25103.mail.ukl.yahoo.com via HTTP; Mon, 17 May 2004 14:01:22 +0100 (BST) Date: Mon, 17 May 2004 14:01:22 +0100 (BST) From: =?iso-8859-1?q?kim=20yeung?= Subject: Re: Varian HE Clinac Sender: owner-linac-eng@plato.aristotle.net To: Linac-Eng Message-id: <20040517130122.73678.qmail@web25103.mail.ukl.yahoo.com> MIME-version: 1.0 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_s0+muYiGr7H0xrcNTabIQQ)" Content-transfer-encoding: 8BIT Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 17 May 2004 14:01:22 +0100 (BST) From: =?iso-8859-1?q?kim=20yeung?= Subject: Re: Varian HE Clinac Sender: owner-linac-eng@plato.aristotle.net To: Linac-Eng X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f --Boundary_(ID_s0+muYiGr7H0xrcNTabIQQ) Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 8bit Hi Colleagues, Varian 2300CD When we change any energy to no mode the status of the energy switch will remain unchanged. Does anyone know the reasons behind? --------------------------------- Yahoo! Messenger - Communicate instantly..."Ping" your friends today! Download Messenger Now --Boundary_(ID_s0+muYiGr7H0xrcNTabIQQ) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: 8bit
Hi Colleagues,
 
Varian 2300CD
 
When we change any energy to no mode the status of the energy switch will remain unchanged.
 
Does anyone know the reasons behind?

Yahoo! Messenger - Communicate instantly..."Ping" your friends today! Download Messenger Now --Boundary_(ID_s0+muYiGr7H0xrcNTabIQQ)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXV0077GM8U5A@hubbard.azu.nl>; Mon, 17 May 2004 22:58:07 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004051722580630108 ; Mon, 17 May 2004 22:58:06 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id WAA04141; Mon, 17 May 2004 22:58:25 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma004118; Mon, 17 May 2004 22:58:03 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id NAA21170 for linac-eng-list; Mon, 17 May 2004 13:49:57 -0500 (CDT) Received: from mail5.hs.uab.edu (msgmail5.hs.uab.edu [164.111.99.114]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id NAA21166 for ; Mon, 17 May 2004 13:49:56 -0500 (CDT) Received: from msgia.hs.uab.edu not authenticated [10.20.2.43] by mail5.hs.uab.edu with NetMail SMTP Agent $Revision: 3.22.1.13 $ on Novell NetWare; Mon, 17 May 2004 13:48:50 -0500 Received: from INET-MTA by msgia.hs.uab.edu with Novell_GroupWise; Mon, 17 May 2004 13:48:50 -0500 Date: Mon, 17 May 2004 13:48:39 -0500 From: Stephen Jordan Subject: 2100C "Series 3" foils Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Cc: Richard Popple Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.5.1 Content-type: text/plain; charset=US-ASCII Content-disposition: inline Content-transfer-encoding: 7bit Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 17 May 2004 13:48:39 -0500 From: Stephen Jordan Subject: 2100C "Series 3" foils Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Cc: Richard Popple Content-disposition: inline X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Our Physics department is studying a publication that refers to Varian 2100C "Series 3" electron scattering foils (9e and 20e). Can someone on the list please explain what Varian's reference designations are with respect to foils? Our 2100c (C1 serial 078) has 6,9,12,15,18e, 6x,15x. I cannot locate documentation pertaining to the foil type or "series" that we are using. Thank you ! Steve Jordan UAB Dept. of Radiation Physics  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXX00C7452WTE@hubbard.azu.nl>; Tue, 18 May 2004 18:42:35 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004051818423231110 ; Tue, 18 May 2004 18:42:32 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA01549; Tue, 18 May 2004 18:42:52 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma001493; Tue, 18 May 2004 18:42:24 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id JAA08987 for linac-eng-list; Tue, 18 May 2004 09:36:11 -0500 (CDT) Received: from ehc-sjh-mail2.exempla.org ([170.188.202.17]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id JAA08983 for ; Tue, 18 May 2004 09:36:10 -0500 (CDT) Date: Tue, 18 May 2004 08:35:39 -0600 From: "Lollar, James" Subject: Siemens Mev 74 Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <1A52785828ABD7428AAFAF70E2A5A7E5DE061B@ehc-sjh-mail2.exempla.org> MIME-version: 1.0 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_kNHqigNogXwVNWm4k8N0pw)" Precedence: bulk X-MimeOLE: Produced By Microsoft Exchange V6.5.6944.0 Content-class: urn:content-classes:message Thread-Topic: Siemens Mev 74 Thread-Index: AcQ85WQeXzgAGAIrTKC8r4MbDt/LOQ== X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 18 May 2004 08:35:39 -0600 From: "Lollar, James" Subject: Siemens Mev 74 Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-MimeOLE: Produced By Microsoft Exchange V6.5.6944.0 Content-class: urn:content-classes:message Thread-Topic: Siemens Mev 74 Thread-Index: AcQ85WQeXzgAGAIrTKC8r4MbDt/LOQ== X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This is a multi-part message in MIME format. --Boundary_(ID_kNHqigNogXwVNWm4k8N0pw) Content-type: text/plain; charset=us-ascii Content-transfer-encoding: quoted-printable To the List: Does anyone out there in the Linac World have a need for the following Siemens Linac for spares are what ever. This unit is in storage in Denver, Colorado. If you have any interest please contact me direct. I believe there is no charge for Linac except for removal of unit from storage & shipping. =20 Siemens Mevatron 74 DOB circa 1984-5. =20 Single 10MV photon energy. =20 6,9,12,14 MeV electron energies =20 Assymetrix X jaw. =20 No MLC. =20 New Accelerator guide. =20 I don't know if they've kept vacuum. They were in the beginning but not sure now.=20 =20 James Lollar Exempla Saint Joseph & Exempla Lutheran Medical Center Linac/Imaging Engineer 303-837-7795 Office 303-829-3197 Cell 303-837-6557 Fax 303-897-2019 Pager lollarj@exempla.org =20 =20 =20 --Boundary_(ID_kNHqigNogXwVNWm4k8N0pw) Content-type: text/html; charset=us-ascii Content-transfer-encoding: quoted-printable Message
To the=20 List:
Does anyone out there in the Linac World have = a need=20 for the following Siemens Linac for spares are what ever. This unit is = in=20 storage in Denver, Colorado. If you have any interest please contact me = direct.=20 I believe there is no charge for Linac except for removal of unit = from=20 storage & shipping.
  
Siemens=20 Mevatron 74 DOB circa 1984-5.
 
Single 10MV photon energy.
 
6,9,12,14 MeV electron = energies
 
Assymetrix X jaw.
 
No MLC.
 
New Accelerator guide.
 
I don't know if they've kept vacuum. = They were in=20 the beginning but not sure now.
 
James Lollar
Exempla Saint = Joseph=20 &
Exempla Lutheran = Medical=20 Center
Linac/Imaging=20 Engineer
303-837-7795=20 Office
303-829-3197=20 Cell
303-837-6557=20 Fax
303-897-2019=20 Pager
lollarj@exempla.org<= /A>
 
 
=00 --Boundary_(ID_kNHqigNogXwVNWm4k8N0pw)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXX00CBW59BTE@hubbard.azu.nl>; Tue, 18 May 2004 18:46:29 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004051818462331197 ; Tue, 18 May 2004 18:46:23 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA02066; Tue, 18 May 2004 18:46:43 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma001992; Tue, 18 May 2004 18:46:09 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id JAA09106 for linac-eng-list; Tue, 18 May 2004 09:51:42 -0500 (CDT) Received: from smtp2k.phoebe.com (ppmh.org [204.27.160.175]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id JAA09102 for ; Tue, 18 May 2004 09:51:40 -0500 (CDT) Received: from exchange01.phoebe.com ([129.47.10.151]) by smtp2k.phoebe.com (SAVSMTP 3.1.5.43) with SMTP id M2004051810510019717 for ; Tue, 18 May 2004 10:51:00 -0400 Date: Tue, 18 May 2004 10:51:00 -0400 From: "Eason, Guy" Subject: foil carrousel faults. Varian 21EX Sender: owner-linac-eng@plato.aristotle.net To: "Linac-Engineering (E-mail)" Message-id: MIME-version: 1.0 Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 8bit Precedence: bulk X-MimeOLE: Produced By Microsoft Exchange V6.0.6249.0 content-class: urn:content-classes:message Thread-Topic: foil carrousel faults. Varian 21EX Thread-Index: AcQ854iVRnv4jUQ7ToSqt2It/nrskg== X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id JAA09103 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 18 May 2004 10:51:00 -0400 From: "Eason, Guy" Subject: foil carrousel faults. Varian 21EX Sender: owner-linac-eng@plato.aristotle.net To: "Linac-Engineering (E-mail)" X-MimeOLE: Produced By Microsoft Exchange V6.0.6249.0 content-class: urn:content-classes:message Thread-Topic: foil carrousel faults. Varian 21EX Thread-Index: AcQ854iVRnv4jUQ7ToSqt2It/nrskg== X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id JAA09103 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Has any one out there run into a bad aux back plane causing foil carrousel faults. As long as we keep pressure on the pwm card against the back plane, the carrousel works fine. This is minimum pressure but pressure none the less. If no pressure is applied to the pwm card then the carrousel does not turn at all. Varian 21EX sn 1771. Guy Eason Radiation Oncology Phoebe Putney Memorial Hospital Albany, GA (229) 312-2280  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXX00243F2J2D@hubbard.azu.nl>; Tue, 18 May 2004 22:18:24 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004051822181903127 ; Tue, 18 May 2004 22:18:19 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id WAA00270; Tue, 18 May 2004 22:18:39 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma000230; Tue, 18 May 2004 22:18:13 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id NAA12742 for linac-eng-list; Tue, 18 May 2004 13:11:50 -0500 (CDT) Received: from smtp2k.phoebe.com (ppmh.org [204.27.160.175]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id NAA12738 for ; Tue, 18 May 2004 13:11:48 -0500 (CDT) Received: from exchange01.phoebe.com ([129.47.10.151]) by smtp2k.phoebe.com (SAVSMTP 3.1.5.43) with SMTP id M2004051814110722687 for ; Tue, 18 May 2004 14:11:07 -0400 Date: Tue, 18 May 2004 14:11:07 -0400 From: "Eason, Guy" Subject: RE: foil carrousel faults. Varian 21EX Thanks to all who have replied. Sender: owner-linac-eng@plato.aristotle.net To: "Linac-Engineering (E-mail)" Message-id: MIME-version: 1.0 Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 8bit Precedence: bulk X-MimeOLE: Produced By Microsoft Exchange V6.0.6249.0 content-class: urn:content-classes:message Thread-Topic: foil carrousel faults. Varian 21EX Thread-Index: AcQ8+itgIJgDYUw4ToKtYWUbTXCUVwACRrmw X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id NAA12739 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 18 May 2004 14:11:07 -0400 From: "Eason, Guy" Subject: RE: foil carrousel faults. Varian 21EX Thanks to all who have replied. Sender: owner-linac-eng@plato.aristotle.net To: "Linac-Engineering (E-mail)" X-MimeOLE: Produced By Microsoft Exchange V6.0.6249.0 content-class: urn:content-classes:message Thread-Topic: foil carrousel faults. Varian 21EX Thread-Index: AcQ8+itgIJgDYUw4ToKtYWUbTXCUVwACRrmw X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id NAA12739 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f I will take the back plane out and try to resolder the connections on the back. Will let everyone know how its turns out. Thanks to all who have replied. Guy Eason Radiation Oncology Phoebe Putney Memorial Hospital Albany, GA (229) 312-2280 -----Original Message----- From: Steve Davis [mailto:steved@nmohc.com] Sent: Tuesday, May 18, 2004 1:04 PM To: Eason, Guy Subject: Re: foil carrousel faults. Varian 21EX Guy, Varian has had numerous problems with traces and solder joints on printed circuit boards over the years which it sounds as if you are experiencing one now. Steve Davis New Mexico Oncology Hematology Consultants. 4901 Lang Ave. NE Albuquerque, N.M. 87109 505-379-7665 steved@nmohc.com ----- Original Message ----- From: "Eason, Guy" To: "Linac-Engineering (E-mail)" Sent: Tuesday, May 18, 2004 8:51 AM Subject: foil carrousel faults. Varian 21EX > Has any one out there run into a bad aux back plane causing foil carrousel faults. As long as we keep pressure on the pwm card against the back plane, the carrousel works fine. This is minimum pressure but pressure none the less. If no pressure is applied to the pwm card then the carrousel does not turn at all. Varian 21EX sn 1771. > > Guy Eason > Radiation Oncology > Phoebe Putney Memorial Hospital > Albany, GA > (229) 312-2280  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HXZ00120W7VCY@hubbard.azu.nl>; Thu, 20 May 2004 06:23:58 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004052006235411946 ; Thu, 20 May 2004 06:23:54 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id GAA10380; Thu, 20 May 2004 06:24:15 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma010356; Thu, 20 May 2004 06:23:49 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id VAA15412 for linac-eng-list; Wed, 19 May 2004 21:28:13 -0500 (CDT) Received: from valley.nettas.net (valley.nettas.net [202.7.15.73]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id VAA15408 for ; Wed, 19 May 2004 21:28:10 -0500 (CDT) Received: from dchs6202.dchs.tas.gov.au (exch.dchs.tas.gov.au [147.109.65.6]) by valley.nettas.net (8.12.7-20030918/8.12.7) with ESMTP id i4K2Tv6M027117 for ; Thu, 20 May 2004 12:29:57 +1000 (EST) Received: by exch.dchs.tas.gov.au with Internet Mail Service (5.5.2655.55) id ; Thu, 20 May 2004 12:28:04 +1000 Date: Thu, 20 May 2004 12:28:00 +1000 From: Johnson Glenn Subject: IPSN Sender: owner-linac-eng@plato.aristotle.net To: "LINAC_ENGINEERS (E-mail)" Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2655.55) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-NetTas-MTS: 'i4K2Tv6M027117' scanned using rules for Default MTS (plato.aristotle.net), previous hop was [147.109.65.6] X-Scanned-By: MIMEDefang 2.40 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 20 May 2004 12:28:00 +1000 From: Johnson Glenn Subject: IPSN Sender: owner-linac-eng@plato.aristotle.net To: "LINAC_ENGINEERS (E-mail)" X-NetTas-MTS: 'i4K2Tv6M027117' scanned using rules for Default MTS (plato.aristotle.net), previous hop was [147.109.65.6] X-Scanned-By: MIMEDefang 2.40 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hi All, Have been getting intermittent (on a daily basis) IPSN interlocks. It can occur on any position / treatment setup, and happens as a random event during beam on. Event Log registers the interlock as IPSN, but position information is as setup - meaning nothing has moved. I have since put on another monitor onto the AVI Interface, so we can watch from the Console Room if there is any change in readout. RV mode shows the PLANNED POSITION, and once the machine positions are within tolerance the ACTUAL POSITION readout display goes black from red. At any instant during beam on, I have confirmed the ACTUAL POSITION readout to momentarily flicker red, into out of tolerance, then back to black, in tolerance. I have captured, at different times, Couch Vertical, Coll Rotation, Gantry Rotation all go into the red by as much as 3.0 cm or 3.0 degrees. Its physically impossible for the Clinic to move by this much out of tolerance and back to the original position. Because I'm not seeing any change in Event Log or change in readout display on Treatment monitor, its perhaps some random noise ? Pieces in question are - 600C #298, Varies In Room Monitor & Verification Interface V1.4.06 and Varies Treatment V6.1. Has any one had any similar experiences with this type of fault ? You've gotta love the intermittent faults !! Regards, Glenn Johnson Radiation Engineer W P Holman Clinic  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HY000L9Z9ERVN@hubbard.azu.nl>; Thu, 20 May 2004 11:08:53 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004052011085115650 ; Thu, 20 May 2004 11:08:51 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id LAA07109; Thu, 20 May 2004 11:09:12 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma007074; Thu, 20 May 2004 11:08:45 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id CAA17803 for linac-eng-list; Thu, 20 May 2004 02:39:20 -0500 (CDT) Received: from mail23.nhs.uk (mail23.nhs.uk [62.6.139.221]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id CAA17799 for ; Thu, 20 May 2004 02:39:18 -0500 (CDT) Received: from [10.191.254.3] (helo=relayint1.nhs.uk) by mail23.nhs.uk with esmtp (MTC MTA) id 1BQi8d-0000Zs-HN for linac-eng@plato.aristotle.net; Thu, 20 May 2004 08:38:47 +0100 Received: from relay.nhs.uk (194.62.42.143) by relayint1.nhs.uk (Syntegra-I1 7.0.008) id 40926E2F0048F3E3 for linac-eng@plato.aristotle.net; Thu, 20 May 2004 08:38:47 +0100 Received: from ubht.swest.nhs.uk (194.101.53.2) by relay.nhs.uk (Syntegra-3 7.0.008) id 40AB23E70007CEB2 for linac-eng@plato.aristotle.net; Thu, 20 May 2004 08:38:47 +0100 Received: by ubhtfw1.ubht.swest.nhs.uk id <119044>; Thu, 20 May 2004 08:15:01 +0100 Date: Thu, 20 May 2004 08:38:37 +0100 From: "White, Malcolm" Subject: Re IPSN Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <04May20.081501bst.119044@ubhtfw1.ubht.swest.nhs.uk> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 20 May 2004 08:38:37 +0100 From: "White, Malcolm" Subject: Re IPSN Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Oh the good old IPSN random fault. I have seen a jaw move by up to 0.5cm between the radiographer setting it and then leaving the room. Changing the pots made no difference. Have you checked the power supplies to the pots? -- Malc  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HY000F5GK7IFA@hubbard.azu.nl>; Thu, 20 May 2004 15:02:08 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004052015020519493 ; Thu, 20 May 2004 15:02:05 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id PAA03969; Thu, 20 May 2004 15:02:27 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma003920; Thu, 20 May 2004 15:02:15 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id GAA20885 for linac-eng-list; Thu, 20 May 2004 06:23:41 -0500 (CDT) Received: from nt-tudor00.cancercare.co.za ([196.15.187.67]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id GAA20881 for ; Thu, 20 May 2004 06:23:38 -0500 (CDT) Received: by smtp.cancercare.co.za with Internet Mail Service (5.5.2650.21) id ; Thu, 20 May 2004 13:20:32 +0200 Date: Thu, 20 May 2004 13:26:50 +0200 From: Will Pazda Subject: Equipment Available Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2650.21) Content-type: MULTIPART/MIXED; BOUNDARY="Boundary_(ID_r+m6YaZQIRoP532Y/E7k9Q)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 20 May 2004 13:26:50 +0200 From: Will Pazda Subject: Equipment Available Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_r+m6YaZQIRoP532Y/E7k9Q) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_xeOVr8a3hiq3wQorDZP1Mw)" --Boundary_(ID_xeOVr8a3hiq3wQorDZP1Mw) Content-type: text/plain; CHARSET=US-ASCII Hi, We have the following equipment available :- Plato Planning System (Silicon Graphics workstation running V4.00 Plato s/w) Philips SL75/20 Linac (with Ram Style Couch) CMS Focus Planning System (HP Visualise workstation running V3.0.0 Focus s/w) 3M LaserImager Plus Siemens Somatom CR CT Scanner If anybody is interested in making any offers on any of the above and requires further info, please email me. Regards, Will Pazda Cape Town - South Africa --Boundary_(ID_xeOVr8a3hiq3wQorDZP1Mw) Content-type: text/html
Hi,
 
We have the following equipment available :-
 
Plato Planning System (Silicon Graphics workstation running V4.00 Plato s/w)
Philips SL75/20 Linac (with Ram Style Couch)
CMS Focus Planning System (HP Visualise workstation running V3.0.0 Focus s/w)
3M LaserImager Plus
Siemens Somatom CR CT Scanner
 
If anybody is interested in making any offers on any of the above and requires further info, please email me.
 
Regards,
 
Will Pazda
Cape Town - South Africa
 
 
 
--Boundary_(ID_xeOVr8a3hiq3wQorDZP1Mw)-- --Boundary_(ID_r+m6YaZQIRoP532Y/E7k9Q)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HY0002ARR9O51@hubbard.azu.nl>; Thu, 20 May 2004 17:34:38 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004052017343521873 ; Thu, 20 May 2004 17:34:35 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id RAA20347; Thu, 20 May 2004 17:34:57 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma020310; Thu, 20 May 2004 17:34:50 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id IAA23502 for linac-eng-list; Thu, 20 May 2004 08:41:54 -0500 (CDT) Received: from mail2.tenethealth.com (mail2.tenethealth.com [199.222.14.8]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id IAA23498 for ; Thu, 20 May 2004 08:41:52 -0500 (CDT) Received: from cscan2.tenethealth.com (cscan2.tenethealth.com [172.18.167.81]) by mail2.tenethealth.com (8.11.6/8.11.6) with ESMTP id i4KDfLe07528; Thu, 20 May 2004 08:41:21 -0500 Received: from 172.18.167.160 by cscan2.tenethealth.com with SMTP (Tenet Healthcare CF SMTP Relay (MMS v5.5.3)); Thu, 20 May 2004 08:41:15 -0500 Received: from tenhdcthemx53.tenethealth.net(172.18.167.214) by tenhdcthvscan01.tenethealth.net via csmap id ab0b071a_aa67_11d8_8266_0002b3d786fe_27516; Thu, 20 May 2004 09:12:03 -0500 (CDT) Received: from tenbmcthemx01.tenethealth.net ([10.30.2.48]) by tenhdcthemx53.tenethealth.net with Microsoft SMTPSVC(5.0.2195.6713); Thu, 20 May 2004 08:41:10 -0500 Date: Thu, 20 May 2004 08:41:08 -0500 From: "Kyle, John" Subject: RE: IPSN Sender: owner-linac-eng@plato.aristotle.net To: Johnson Glenn , "LINAC_ENGINEERS (E-mail)" Message-id: MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 8bit Precedence: bulk X-MimeOLE: Produced By Microsoft Exchange V6.0.6249.0 content-class: urn:content-classes:message Thread-Topic: IPSN Thread-Index: AcQ+Itb/fu6MMYyZQm2C0126iLZY0wATNm1A X-OriginalArrivalTime: 20 May 2004 13:41:10.0211 (UTC) FILETIME=[1C1C9130:01C43E70] X-WSS-ID: 6CB26AF1229524-01-01 X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id IAA23499 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 20 May 2004 08:41:08 -0500 From: "Kyle, John" Subject: RE: IPSN Sender: owner-linac-eng@plato.aristotle.net To: Johnson Glenn , "LINAC_ENGINEERS (E-mail)" X-MimeOLE: Produced By Microsoft Exchange V6.0.6249.0 content-class: urn:content-classes:message Thread-Topic: IPSN Thread-Index: AcQ+Itb/fu6MMYyZQm2C0126iLZY0wATNm1A X-OriginalArrivalTime: 20 May 2004 13:41:10.0211 (UTC) FILETIME=[1C1C9130:01C43E70] X-WSS-ID: 6CB26AF1229524-01-01 X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id IAA23499 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Check the primary and secondary readout pots. Also check the teeth on the belts. John Kyle Coordinator Technical Support Services Brookwood Medical Center 205-877-1092 -----Original Message----- From: Johnson Glenn [mailto:glenn.johnson@dhhs.tas.gov.au] Sent: Wednesday, May 19, 2004 9:28 PM To: LINAC_ENGINEERS (E-mail) Subject: IPSN Hi All, Have been getting intermittent (on a daily basis) IPSN interlocks. It can occur on any position / treatment setup, and happens as a random event during beam on. Event Log registers the interlock as IPSN, but position information is as setup - meaning nothing has moved. I have since put on another monitor onto the AVI Interface, so we can watch from the Console Room if there is any change in readout. RV mode shows the PLANNED POSITION, and once the machine positions are within tolerance the ACTUAL POSITION readout display goes black from red. At any instant during beam on, I have confirmed the ACTUAL POSITION readout to momentarily flicker red, into out of tolerance, then back to black, in tolerance. I have captured, at different times, Couch Vertical, Coll Rotation, Gantry Rotation all go into the red by as much as 3.0 cm or 3.0 degrees. Its physically impossible for the Clinic to move by this much out of tolerance and back to the original position. Because I'm not seeing any change in Event Log or change in readout display on Treatment monitor, its perhaps some random noise ? Pieces in question are - 600C #298, Varies In Room Monitor & Verification Interface V1.4.06 and Varies Treatment V6.1. Has any one had any similar experiences with this type of fault ? You've gotta love the intermittent faults !! Regards, Glenn Johnson Radiation Engineer W P Holman Clinic  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HY0005F3URPUI@hubbard.azu.nl>; Thu, 20 May 2004 18:50:23 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004052018501723061 ; Thu, 20 May 2004 18:50:17 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA28765; Thu, 20 May 2004 18:50:38 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma028717; Thu, 20 May 2004 18:50:29 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id JAA25025 for linac-eng-list; Thu, 20 May 2004 09:56:14 -0500 (CDT) Received: from eprism2.cancerboard.ab.ca (cancerserver.cancerboard.ab.ca [164.102.1.2]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id JAA25021 for ; Thu, 20 May 2004 09:56:12 -0500 (CDT) Date: Thu, 20 May 2004 08:58:03 -0600 From: Kurt Knibutat Subject: Re: IPSN Sender: owner-linac-eng@plato.aristotle.net To: Johnson Glenn Cc: "LINAC_ENGINEERS (E-mail)" Message-id: <40ACC77B.116B08F2@cancerboard.ab.ca> Organization: Tom Baker Cancer Centre MIME-version: 1.0 X-Mailer: Mozilla 4.79 [en] (Win98; U) Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 7bit Precedence: bulk X-Accept-Language: en References: X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 20 May 2004 08:58:03 -0600 From: Kurt Knibutat Subject: Re: IPSN Sender: owner-linac-eng@plato.aristotle.net To: Johnson Glenn Cc: "LINAC_ENGINEERS (E-mail)" Organization: Tom Baker Cancer Centre X-Accept-Language: en X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Something to check... We just went through some strange readout problems with CL21EX #1291. The main culprit was the +/-15V supply in the console. This is the power source for the precision supplies for the PRO circuits. Our original problem showed up as a drifting Collimator Rot. readout. It turned out we had a flaky fuse/fuse-holder in the +15V circuit. -- Kurt Knibutat Sr Technical Equipment Officer Tom Baker Cancer Centre (403) 944-1089 This e-mail and any attachments may contain confidential and privileged information. If you are not the intended recipient, please notify the sender immediately by return e-mail, delete this e-mail and destroy any copies. Any dissemination or use of this information by a person other than the intended recipient is unauthorized and may be illegal.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HY100H903S63A@hubbard.azu.nl>; Thu, 20 May 2004 22:04:55 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004052022045326224 ; Thu, 20 May 2004 22:04:53 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id WAA20310; Thu, 20 May 2004 22:05:14 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma020278; Thu, 20 May 2004 22:04:47 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id MAA28179 for linac-eng-list; Thu, 20 May 2004 12:57:20 -0500 (CDT) Received: from PHSXCHICI3.partners.org (phsxchici3.mgh.harvard.edu [132.183.130.38]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id MAA28175 for ; Thu, 20 May 2004 12:57:19 -0500 (CDT) Received: by phsxchici3.mgh.harvard.edu with Internet Mail Service (5.5.2657.72) id ; Thu, 20 May 2004 13:57:26 -0400 Date: Thu, 20 May 2004 13:56:46 -0400 From: "Maddox, Buford J" Subject: RE: IPSN Sender: owner-linac-eng@plato.aristotle.net To: 'Johnson Glenn' , "LINAC_ENGINEERS (E-mail)" Message-id: <36298D09ED1AD311B4DC0008C7F4D4E111466463@phsexch6.partners.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 20 May 2004 13:56:46 -0400 From: "Maddox, Buford J" Subject: RE: IPSN Sender: owner-linac-eng@plato.aristotle.net To: 'Johnson Glenn' , "LINAC_ENGINEERS (E-mail)" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Sounds like noise or a power supply. I have seen modulator (DEQ recovery spike) noise get into the analog multiplexer, so that you could affect which axis had a motion fault by changing the DeQ %. Right now I am chasing a very intermittent HWFA in a 600c: both gantry pots go together, coll reads 100 more than possible, UJ1 gives the HWFA, come couch readouts are impossible numbers. This is a good example of the fact that your interlock will often be the first item in the list of things that are monitored, if they all have something in common. Trying to find out if it is gantry related, etc., but therapists do too many things in order to try to recover quickly. Trying to get them to be the detectives, as it will never happen for me. Jerry -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Johnson Glenn Sent: Wednesday, May 19, 2004 10:28 PM To: LINAC_ENGINEERS (E-mail) Subject: IPSN Hi All, Have been getting intermittent (on a daily basis) IPSN interlocks. It can occur on any position / treatment setup, and happens as a random event during beam on. Event Log registers the interlock as IPSN, but position information is as setup - meaning nothing has moved. I have since put on another monitor onto the AVI Interface, so we can watch from the Console Room if there is any change in readout. RV mode shows the PLANNED POSITION, and once the machine positions are within tolerance the ACTUAL POSITION readout display goes black from red. At any instant during beam on, I have confirmed the ACTUAL POSITION readout to momentarily flicker red, into out of tolerance, then back to black, in tolerance. I have captured, at different times, Couch Vertical, Coll Rotation, Gantry Rotation all go into the red by as much as 3.0 cm or 3.0 degrees. Its physically impossible for the Clinic to move by this much out of tolerance and back to the original position. Because I'm not seeing any change in Event Log or change in readout display on Treatment monitor, its perhaps some random noise ? Pieces in question are - 600C #298, Varies In Room Monitor & Verification Interface V1.4.06 and Varies Treatment V6.1. Has any one had any similar experiences with this type of fault ? You've gotta love the intermittent faults !! Regards, Glenn Johnson Radiation Engineer W P Holman Clinic  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HY100L2U409G8@hubbard.azu.nl>; Thu, 20 May 2004 22:09:46 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004052022094526288 ; Thu, 20 May 2004 22:09:45 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id WAA20734; Thu, 20 May 2004 22:10:06 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma020682; Thu, 20 May 2004 22:09:33 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id MAA28158 for linac-eng-list; Thu, 20 May 2004 12:55:01 -0500 (CDT) Received: from PHSXCHICI3.partners.org (phsxchici3.mgh.harvard.edu [132.183.130.38]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id MAA28154 for ; Thu, 20 May 2004 12:55:00 -0500 (CDT) Received: by phsxchici3.mgh.harvard.edu with Internet Mail Service (5.5.2657.72) id ; Thu, 20 May 2004 13:55:04 -0400 Date: Thu, 20 May 2004 13:54:25 -0400 From: "Maddox, Buford J" Subject: RE: IPSN Sender: owner-linac-eng@plato.aristotle.net To: 'Kurt Knibutat' , Johnson Glenn Cc: "LINAC_ENGINEERS (E-mail)" Message-id: <36298D09ED1AD311B4DC0008C7F4D4E111466461@phsexch6.partners.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 20 May 2004 13:54:25 -0400 From: "Maddox, Buford J" Subject: RE: IPSN Sender: owner-linac-eng@plato.aristotle.net To: 'Kurt Knibutat' , Johnson Glenn Cc: "LINAC_ENGINEERS (E-mail)" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f I had the same PS go flaky in a 2100. The -15 would go down slowly. Initial symptom was that dose rate would die, then later the smell of smoke in the treatment room would get everyone all excited, wanting to call fire dept. pcbs in the DeQ deck would burn up resistors. The -15v is used to keep a transistor turned off in the trigger circuits there. When it stayed on, 300v ps chain cooked some resistors. Took a couple of spares and a while watching the deQ PCB (pulsing) to find it, as we suspected a problem in the DeQ HV, divider, trigger xformer, etc. in the beginning. Jerry -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Kurt Knibutat Sent: Thursday, May 20, 2004 10:58 AM To: Johnson Glenn Cc: LINAC_ENGINEERS (E-mail) Subject: Re: IPSN Something to check... We just went through some strange readout problems with CL21EX #1291. The main culprit was the +/-15V supply in the console. This is the power source for the precision supplies for the PRO circuits. Our original problem showed up as a drifting Collimator Rot. readout. It turned out we had a flaky fuse/fuse-holder in the +15V circuit. -- Kurt Knibutat Sr Technical Equipment Officer Tom Baker Cancer Centre (403) 944-1089 This e-mail and any attachments may contain confidential and privileged information. If you are not the intended recipient, please notify the sender immediately by return e-mail, delete this e-mail and destroy any copies. Any dissemination or use of this information by a person other than the intended recipient is unauthorized and may be illegal.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HY1002JP934EB@hubbard.azu.nl>; Thu, 20 May 2004 23:59:37 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004052023592827787 ; Thu, 20 May 2004 23:59:28 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id XAA01608; Thu, 20 May 2004 23:59:50 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma001594; Thu, 20 May 2004 23:59:38 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id PAA02057 for linac-eng-list; Thu, 20 May 2004 15:14:17 -0500 (CDT) Received: from dalwhinnie.chhlth.govt.nz ([203.163.70.2]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id PAA02053 for ; Thu, 20 May 2004 15:14:13 -0500 (CDT) Received: from NTCHAVIMSS (ntchavimss.chhlth.govt.nz [159.117.27.250]) by dalwhinnie.chhlth.govt.nz (8.12.10/8.12.10/SuSE Linux 0.7) with ESMTP id i4KKG5TI024222 for ; Fri, 21 May 2004 08:16:06 +1200 Received: from SMTPGATE.CHHLTH.GOVT.NZ ([159.117.20.14]) by NTCHAVIMSS with InterScan Messaging Security Suite; Fri, 21 May 2004 08:12:32 +1200 Received: from CHCH2-MTA by SMTPGATE.CHHLTH.GOVT.NZ with Novell_GroupWise; Fri, 21 May 2004 08:13:32 +1200 Date: Fri, 21 May 2004 08:13:22 +1200 From: Dave Pinchin Subject: Re: IPSN Sender: owner-linac-eng@plato.aristotle.net To: glenn.johnson@dhhs.tas.gov.au, linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.0.4 Content-type: text/plain; charset=US-ASCII Content-disposition: inline Content-transfer-encoding: 8bit Precedence: bulk X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id PAA02054 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 21 May 2004 08:13:22 +1200 From: Dave Pinchin Subject: Re: IPSN Sender: owner-linac-eng@plato.aristotle.net To: glenn.johnson@dhhs.tas.gov.au, linac-eng@plato.aristotle.net Content-disposition: inline X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id PAA02054 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f G'day, Yup, sure have. Just upgraded to VARiS gen 6 with new console s/w (V6) on 3 linacs. 2100#40, 2100#1164 &600#248. Had this IPSN interlock on all 3 machines. Turned out to be the VARiS tolerance table being unrealisticly tight. :D >>> Johnson Glenn 20/05/04 14:28:00 >>> Hi All, Have been getting intermittent (on a daily basis) IPSN interlocks. It can occur on any position / treatment setup, and happens as a random event during beam on. Event Log registers the interlock as IPSN, but position information is as setup - meaning nothing has moved. I have since put on another monitor onto the AVI Interface, so we can watch from the Console Room if there is any change in readout. RV mode shows the PLANNED POSITION, and once the machine positions are within tolerance the ACTUAL POSITION readout display goes black from red. At any instant during beam on, I have confirmed the ACTUAL POSITION readout to momentarily flicker red, into out of tolerance, then back to black, in tolerance. I have captured, at different times, Couch Vertical, Coll Rotation, Gantry Rotation all go into the red by as much as 3.0 cm or 3.0 degrees. Its physically impossible for the Clinic to move by this much out of tolerance and back to the original position. Because I'm not seeing any change in Event Log or change in readout display on Treatment monitor, its perhaps some random noise ? Pieces in question are - 600C #298, Varies In Room Monitor & Verification Interface V1.4.06 and Varies Treatment V6.1. Has any one had any similar experiences with this type of fault ? You've gotta love the intermittent faults !! Regards, Glenn Johnson Radiation Engineer W P Holman Clinic ********************************************************************** This email and attachments have been scanned for content and viruses and is believed to be clean This email or attachments may contain confidential or legally privileged information intended for the sole use of the addressee(s). 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Any views or opinions expressed in this email (unless otherwise stated) may not represent those of Canterbury District Health Board **********************************************************************  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HY200L4EFLGE7@hubbard.azu.nl>; Fri, 21 May 2004 15:17:47 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004052115174409047 ; Fri, 21 May 2004 15:17:44 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id PAA06156; Fri, 21 May 2004 15:18:06 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma006117; Fri, 21 May 2004 15:17:50 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id GAA12599 for linac-eng-list; Fri, 21 May 2004 06:20:29 -0500 (CDT) Received: from smtp2k.phoebe.com (ppmh.org [204.27.160.175]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id GAA12595 for ; Fri, 21 May 2004 06:20:27 -0500 (CDT) Received: from exchange01.phoebe.com ([129.47.10.151]) by smtp2k.phoebe.com (SAVSMTP 3.1.5.43) with SMTP id M2004052107195030395 for ; Fri, 21 May 2004 07:19:50 -0400 Date: Fri, 21 May 2004 07:19:50 -0400 From: "Eason, Guy" Subject: Thanks, Foil Carrousel faults Varian 21EX Sender: owner-linac-eng@plato.aristotle.net To: "Linac-Engineering (E-mail)" Message-id: MIME-version: 1.0 Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 8bit Precedence: bulk X-MimeOLE: Produced By Microsoft Exchange V6.0.6249.0 content-class: urn:content-classes:message Thread-Topic: Thanks, Foil Carrousel faults Varian 21EX Thread-Index: AcQ/JYgR4z8mF8/+T1SXGQ3X98SymQ== X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id GAA12596 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 21 May 2004 07:19:50 -0400 From: "Eason, Guy" Subject: Thanks, Foil Carrousel faults Varian 21EX Sender: owner-linac-eng@plato.aristotle.net To: "Linac-Engineering (E-mail)" X-MimeOLE: Produced By Microsoft Exchange V6.0.6249.0 content-class: urn:content-classes:message Thread-Topic: Thanks, Foil Carrousel faults Varian 21EX Thread-Index: AcQ/JYgR4z8mF8/+T1SXGQ3X98SymQ== X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id GAA12596 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f I took out the Aux Back plane and resoldered every connection on the board. Reinstalled after nearly falling off the ladder twice and applied power. Went through the carrousel calibration and every thing looks great. No more faults. Must have been a bad solder joint cause it is working fine now. Thanks to all the help. Guy Eason Radiation Oncology Phoebe Putney Memorial Hospital Albany, GA (229) 312-2280  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HYA00HY13E4YQ@hubbard.azu.nl>; Tue, 25 May 2004 18:35:04 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004052518350022858 ; Tue, 25 May 2004 18:35:00 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA09087; Tue, 25 May 2004 18:35:25 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma008988; Tue, 25 May 2004 18:34:55 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id JAA20495 for linac-eng-list; Tue, 25 May 2004 09:35:59 -0500 (CDT) Received: from grouse.mail.pas.earthlink.net (grouse.mail.pas.earthlink.net [207.217.120.116]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id JAA20491 for ; Tue, 25 May 2004 09:35:57 -0500 (CDT) Received: from dialup-4.238.22.237.dial1.orlando1.level3.net ([4.238.22.237] helo=ieee.org) by grouse.mail.pas.earthlink.net with esmtp (Exim 3.33 #1) id 1BSd22-0000nz-00 for linac-eng@plato.aristotle.net; Tue, 25 May 2004 07:35:54 -0700 Date: Tue, 25 May 2004 10:34:45 -0400 From: DP Subject: SIEMENS ACCELERATORS Sender: owner-linac-eng@plato.aristotle.net To: Linac Engineers Message-id: <40B35985.6070001@ieee.org> MIME-version: 1.0 Content-type: text/plain; format=flowed; charset=us-ascii Content-transfer-encoding: 7bit Precedence: bulk User-Agent: Mozilla/5.0 (Windows; U; Win98; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax) X-Accept-Language: en-us, en X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 25 May 2004 10:34:45 -0400 From: DP Subject: SIEMENS ACCELERATORS Sender: owner-linac-eng@plato.aristotle.net To: Linac Engineers X-Accept-Language: en-us, en X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Can anyone give me a short description of how Siemens modify their machines to enable generating 6MV and 18MV from the same waveguide? -- Darrell O. Poole Senior Physicist M.D. Anderson Cancer Center Orlando 321.841.7036 Office (Works sometimes and only when I am at my desk) 407.721.2658 CELL ( Works sometimes but ALWAYS after hours) 407.980.7024 BEEPER ( Works all the time) 407.649.6895 FAX dopoole@ieee.org  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HYA0075GAE9Y0@hubbard.azu.nl>; Tue, 25 May 2004 21:06:10 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004052521060826091 ; Tue, 25 May 2004 21:06:08 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id VAA28788; Tue, 25 May 2004 21:06:33 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma028770; Tue, 25 May 2004 21:06:08 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id MAA23751 for linac-eng-list; Tue, 25 May 2004 12:11:43 -0500 (CDT) Received: from 17RADLAPPC01 ([65.174.193.129]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id MAA23747 for ; Tue, 25 May 2004 12:11:41 -0500 (CDT) Date: Tue, 25 May 2004 13:11:11 -0400 From: Scott Mange Subject: ACCELERATORS IN GENERAL In-reply-to: <40B35985.6070001@ieee.org> Sender: owner-linac-eng@plato.aristotle.net X-Sender: smange@mailhost.det.ameritech.net To: Linac Engineers Message-id: <5.1.0.14.2.20040525125417.00a98e20@mailhost.det.ameritech.net> MIME-version: 1.0 X-Mailer: QUALCOMM Windows Eudora Version 5.1 Content-type: MULTIPART/MIXED; BOUNDARY="Boundary_(ID_QXH4elDNltzf+sJP8n05og)"; x-avg-checked=avg-ok-182E5850 Precedence: bulk X-GCMulti: 1 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 25 May 2004 13:11:11 -0400 From: Scott Mange Subject: ACCELERATORS IN GENERAL In-reply-to: <40B35985.6070001@ieee.org> Sender: owner-linac-eng@plato.aristotle.net X-Sender: smange@mailhost.det.ameritech.net To: Linac Engineers X-GCMulti: 1 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f --Boundary_(ID_QXH4elDNltzf+sJP8n05og) Content-type: text/plain; format=flowed; charset=us-ascii; x-avg-checked=avg-ok-182E5850 Content-transfer-encoding: 8bit Darrell Poole asked for a description of the Siemens machines and how you get different beam energies from it. As a physicist preparing for the board exam, I'd like to ask the members of the engineers list to explain this phenomenon in general (i.e. all linac types). Please explain in very simple terms. I'm interested in the material from a conceptual perspective. If you have the time and inclination, please explain in a simple way how the linac works in general. Perhaps you could include things that surprise you or that you find interesting. Something that a guy who doesn't get to dig around inside the guts of the thing would be surprised by or not expect (energy slits for example). What are common misconceptions about the linacs? Any other specific tidbits like beam current for both photon and electron, current through the thyratron, pulse duration, etc. Your help and patients with the little projects I send to this list is always appreciated. Sincerely Yours, Scott Mange --Boundary_(ID_QXH4elDNltzf+sJP8n05og) Content-type: text/plain; x-avg-checked=avg-ok-182E5850; x-avg=cert; charset=us-ascii Content-disposition: inline --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.690 / Virus Database: 451 - Release Date: 5/22/04 --Boundary_(ID_QXH4elDNltzf+sJP8n05og)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HYA0070MCQKY0@hubbard.azu.nl>; Tue, 25 May 2004 21:56:45 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004052521564327163 ; Tue, 25 May 2004 21:56:43 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id VAA05289; Tue, 25 May 2004 21:57:08 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma005261; Tue, 25 May 2004 21:56:53 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id MAA24454 for linac-eng-list; Tue, 25 May 2004 12:47:44 -0500 (CDT) Received: from mopsy2.ccit.musc.edu (mopsy2.ccit.musc.edu [128.23.34.56]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id MAA24450 for ; Tue, 25 May 2004 12:47:43 -0500 (CDT) Received: from revere3.musc.edu (revere3.musc.edu [128.23.203.9]) by mopsy2.ccit.musc.edu (8.12.10/8.12.10) with ESMTP id i4PHj5ic005398 for ; Tue, 25 May 2004 13:45:05 -0400 Received: from XCHANGE2k.radonc2k.musc.edu (xchange2k.RadOnc.musc.edu [128.23.55.250]) by revere3.musc.edu (8.12.9/8.12.9) with ESMTP id i4PHj5Se028766 for ; Tue, 25 May 2004 13:45:05 -0400 (EDT) Date: Tue, 25 May 2004 13:45:05 -0400 From: "Nelson, Steve" Subject: RE: ACCELERATORS IN GENERAL Sender: owner-linac-eng@plato.aristotle.net To: Scott Mange , Linac Engineers Message-id: MIME-version: 1.0 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 8bit Precedence: bulk content-class: urn:content-classes:message X-MimeOLE: Produced By Microsoft Exchange V6.0.6487.1 Thread-Topic: ACCELERATORS IN GENERAL Thread-Index: AcRCfeHeDYLVJZiKQKSpCXjyUHtbJAAARf3w X-MUSC-MailScanner-Information: Please contact postmstr@musc.edu for more information X-MUSC-MailScanner: Found to be clean X-MUSC-MailScanner-SpamCheck: not spam (whitelisted), SpamAssassin (score=0.578, required 4, LINES_OF_YELLING 0.01, SUBJ_ALL_CAPS 0.57) X-MailScanner-From: nelson@radonc.musc.edu X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id MAA24451 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 25 May 2004 13:45:05 -0400 From: "Nelson, Steve" Subject: RE: ACCELERATORS IN GENERAL Sender: owner-linac-eng@plato.aristotle.net To: Scott Mange , Linac Engineers content-class: urn:content-classes:message X-MimeOLE: Produced By Microsoft Exchange V6.0.6487.1 Thread-Topic: ACCELERATORS IN GENERAL Thread-Index: AcRCfeHeDYLVJZiKQKSpCXjyUHtbJAAARf3w X-MUSC-MailScanner-Information: Please contact postmstr@musc.edu for more information X-MUSC-MailScanner: Found to be clean X-MUSC-MailScanner-SpamCheck: not spam (whitelisted), SpamAssassin (score=0.578, required 4, LINES_OF_YELLING 0.01, SUBJ_ALL_CAPS 0.57) X-MailScanner-From: nelson@radonc.musc.edu X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id MAA24451 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Scott, I would recommend that you pick up a copy of a book by Karzmark and Morton entitled "A Primer on Theory and Operation of Linear Accelerators in Radiation Therapy". It should be available from Medical Physics Publishing Corporation. I've been teaching residents from this for many years and it has been updated periodically to keep up with the technology. It's a great introduction and is not vendor specific. Regards, Stephen -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net] On Behalf Of Scott Mange Sent: Tuesday, May 25, 2004 1:11 PM To: Linac Engineers Subject: ACCELERATORS IN GENERAL Darrell Poole asked for a description of the Siemens machines and how you get different beam energies from it. As a physicist preparing for the board exam, I'd like to ask the members of the engineers list to explain this phenomenon in general (i.e. all linac types). Please explain in very simple terms. I'm interested in the material from a conceptual perspective. If you have the time and inclination, please explain in a simple way how the linac works in general. Perhaps you could include things that surprise you or that you find interesting. Something that a guy who doesn't get to dig around inside the guts of the thing would be surprised by or not expect (energy slits for example). What are common misconceptions about the linacs? Any other specific tidbits like beam current for both photon and electron, current through the thyratron, pulse duration, etc. Your help and patients with the little projects I send to this list is always appreciated. Sincerely Yours, Scott Mange  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HYA0089UQWZMO@hubbard.azu.nl>; Wed, 26 May 2004 03:03:08 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004052603030531441 ; Wed, 26 May 2004 03:03:05 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id DAA04793; Wed, 26 May 2004 03:03:30 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma004740; Wed, 26 May 2004 03:03:14 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id SAA03728 for linac-eng-list; Tue, 25 May 2004 18:11:01 -0500 (CDT) Received: from email-out-01.biz.rr.com (email-out-01.biz.rr.com [24.30.200.26]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id SAA03724 for ; Tue, 25 May 2004 18:10:59 -0500 (CDT) Received: from fep01.biz.rr.com (fep01.biz.rr.com [24.30.200.200]) by email-out-01.biz.rr.com (8.12.10/8.12.10) with ESMTP id i4PNAted008832 for ; Tue, 25 May 2004 19:10:56 -0400 (EDT) Received: from pent4 ([24.173.18.166]) by fep01.biz.rr.com with ESMTP id <20040525231055.LSPO15782.fep01.biz.rr.com@pent4> for ; Tue, 25 May 2004 19:10:55 -0400 Date: Tue, 25 May 2004 18:08:51 -0500 From: Thomas McCausland Subject: Re: SIEMENS ACCELERATORS In-reply-to: <40B35985.6070001@ieee.org> Sender: owner-linac-eng@plato.aristotle.net To: Linac Engineers Reply-to: acceltek@acceltekservice.com Message-id: <40B38BB3.26951.207B428@localhost> MIME-version: 1.0 X-Mailer: Pegasus Mail for Win32 (v3.12c) Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 25 May 2004 18:08:51 -0500 From: Thomas McCausland Subject: Re: SIEMENS ACCELERATORS In-reply-to: <40B35985.6070001@ieee.org> Sender: owner-linac-eng@plato.aristotle.net To: Linac Engineers Reply-to: acceltek@acceltekservice.com X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f > Can anyone give me a short description of how Siemens modify their > machines to enable generating 6MV and 18MV from the same waveguide? > > -- > Darrell O. Poole > Senior Physicist > M.D. Anderson Cancer Center Orlando > 321.841.7036 Office (Works sometimes and only when I am at my desk) > 407.721.2658 CELL ( Works sometimes but ALWAYS after hours) > 407.980.7024 BEEPER ( Works all the time) 407.649.6895 FAX > dopoole@ieee.org > > Short answer is - They don't. Unless something has changed in the past couple of years. I'm no waveguide engineer, but I think they just design the guides 'bandpass' wide enough to allow both a low and high photon energy to be passed. This means that the guide might not be super efficient at any energy, but still be able to run the rated dose output at a high and low energy. What you do have to do is run more gun current on the low energy then the high, since the guide is more efficient at the higher energy. For example , you might run 200 or 240 ma on the high energy, but 900 or 1000 ma on the low energy...no bellows, energy switches..none of that. Hope this helps. Thomas W. McCausland AccelTek Inc. 281-652-0059 888-619-8811  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HYB000B7P37A8@hubbard.azu.nl>; Wed, 26 May 2004 15:21:35 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004052615213218569 ; Wed, 26 May 2004 15:21:32 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id PAA25775; Wed, 26 May 2004 15:21:57 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma025590; Wed, 26 May 2004 15:21:16 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id GAA11366 for linac-eng-list; Wed, 26 May 2004 06:46:53 -0500 (CDT) Received: from imo-m19.mx.aol.com (imo-m19.mx.aol.com [64.12.137.11]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id GAA11362 for ; Wed, 26 May 2004 06:46:52 -0500 (CDT) Received: from Xraytherapy@aol.com by imo-m19.mx.aol.com (mail_out_v37_r1.3.) id y.103.46b24372 (4418) for ; Wed, 26 May 2004 07:46:17 -0400 (EDT) Date: Wed, 26 May 2004 07:46:17 -0400 (EDT) From: Xraytherapy@aol.com Subject: something to consider when cahnging a target in linac Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <103.46b24372.2de5dd89@aol.com> MIME-version: 1.0 X-Mailer: 8.0 for Windows sub 6025 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_/l+M5RdX8diHIPjJqvwOKg)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 26 May 2004 07:46:17 -0400 (EDT) From: Xraytherapy@aol.com Subject: something to consider when cahnging a target in linac Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f --Boundary_(ID_/l+M5RdX8diHIPjJqvwOKg) Content-type: text/plain; charset=ISO-8859-1 Content-transfer-encoding: quoted-printable Hello all, I imagine that some of you have already seen this on the Physics bulletin=20 board. I was unaware that targets became radioactive. Maybe I am the only on= e who=20 didn't know this, but just in case, please take this into consideration when= =20 changing a target.=20 Date:=A0 =A0 Tue, 25 May 2004 11:46:46 -0400 From:=A0 =A0 Lars Ewell Subject: Re: Radioactive Target Chris Hawkins, =A0 Greetings. =A0 This is an interesting question about what types of radionuclides are created in this machine. =A0 I believe that the main type of activation would be from neutron emission/capture. =A0 There is an empirical formula for the energy at which the Giant Dipole Resonance (GDR) is excited: E =3D 77(A)^(-1/3)MeV (see S.S. Hanna 'Proceedings of the Giant Multipole Resonance Topical Conference, 15-17 Oct. 1979, Oak Ridge Tenn.': Harwood Academic Puclbishers, New York 1980).=A0 So if the target is made of tungsten (A=3D184), you get an approximate energy of 14MeV for excitation of the GDR.=A0 This can dexcite by neutron emission, so that if you have photons of around this energy or higher then you can expect that neutrons will be generated in a tungsten target. =A0 After they are released, they can be captured by other nuclei so that I would suspect that tungsten 185 would be a potential radionuclide. It decays via beta emission with a 74.8d 1/2 life.=A0 Tungsten 183 would also be a radionuclide to consider.=A0 Looking at my copy of CRC handbook of chemistry and physics, I see that naturally occuring Tungsten is composed of isotopes ^182W, ^184W and ^186W, so radionuclides of one below and one above these isotopes are things to consider. =A0 Of course if the target is made of copper or something else, a different calculation needs to be done. =A0 Hope this helps. =A0 regards, =A0 Lars Ewell ----------------------------------------------------------------------------= -- ---------- We just pulled the target out of a PRIMUS (nominal high energy 23 MV) and of course it is radioactive. With an ion survey meter the rate is 90 mR/hr at the surface of the hot side. The queries are: What radionuclides am I seeing?? What half-life can I expect?? --------------------------- Lars Ewell Physics Resident Department of Radiation Oncology University of Michigan Medical Center Doug Steers Danbury Engineering Inc. 194 Old Mount Tom Road Bantam, CT 06750 1-860-567-3054 www.danburyengineering.com --Boundary_(ID_/l+M5RdX8diHIPjJqvwOKg) Content-type: text/html; charset=ISO-8859-1 Content-transfer-encoding: quoted-printable Hello all,

I imagine that some of you have already seen this on the Physics bulletin bo= ard. I was unaware that targets became radioactive. Maybe I am the only one=20= who didn't know this, but just in case, please take this into consideration=20= when changing a target.

Date:=A0 =A0 Tue, 25 May 2004 11:46:46 -0400
From:=A0 =A0 Lars Ewell <ewell@MED.UMICH.EDU>
Subject: Re: Radioactive Target

Chris Hawkins,

=A0 Greetings.

=A0 This is an interesting question about what types of radionuclides
are created in this machine.

=A0 I believe that the main type of activation would be from neutron
emission/capture.

=A0 There is an empirical formula for the energy at which the Giant
Dipole
Resonance (GDR) is excited: E =3D 77(A)^(-1/3)MeV (see S.S. Hanna
'Proceedings
of the Giant Multipole Resonance Topical Conference, 15-17 Oct. 1979,
Oak Ridge Tenn.': Harwood Academic Puclbishers, New York 1980).=A0 So if
the target is made of tungsten (A=3D184), you get an approximate energy
of 14MeV for excitation of the GDR.=A0 This can dexcite by neutron
emission,
so that if you have photons of around this energy or higher then you
can
expect that neutrons will be generated in a tungsten target.

=A0 After they are released, they can be captured by other nuclei so
that
I would suspect that tungsten 185 would be a potential radionuclide.
It
decays via beta emission with a 74.8d 1/2 life.=A0 Tungsten 183 would
also
be a radionuclide to consider.=A0 Looking at my copy of CRC handbook of
chemistry and physics, I see that naturally occuring Tungsten is
composed
of isotopes ^182W, ^184W and ^186W, so radionuclides of one below
and one above these isotopes are things to consider.

=A0 Of course if the target is made of copper or something else, a
different
calculation needs to be done.

=A0 Hope this helps.

=A0 regards,

=A0 Lars Ewell

----------------------------------------------------------------------------= ------------

We just pulled the target out of a PRIMUS (nominal high energy 23 MV)
and
of course it is radioactive. With an ion survey meter the rate is 90
mR/hr at
the surface of the hot side.

The queries are:

What radionuclides am I seeing??

What half-life can I expect??


---------------------------
Lars Ewell
Physics Resident
Department of Radiation Oncology
University of Michigan Medical Center




Doug Steers
Danbury Engineering Inc.
194 Old Mount Tom Road
Bantam, CT 06750
1-860-567-3054

www.danburyengineering.com
 --Boundary_(ID_/l+M5RdX8diHIPjJqvwOKg)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HYB00LCXP7G7P@hubbard.azu.nl>; Wed, 26 May 2004 15:23:59 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004052615235318642 ; Wed, 26 May 2004 15:23:53 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id PAA26214; Wed, 26 May 2004 15:24:18 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma026112; Wed, 26 May 2004 15:23:46 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id GAA11219 for linac-eng-list; Wed, 26 May 2004 06:37:19 -0500 (CDT) Received: from PHSXCHICI3.partners.org (phsxchici3.mgh.harvard.edu [132.183.130.38]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id GAA11215 for ; Wed, 26 May 2004 06:37:17 -0500 (CDT) Received: by phsxchici3.mgh.harvard.edu with Internet Mail Service (5.5.2657.72) id ; Wed, 26 May 2004 07:37:03 -0400 Date: Wed, 26 May 2004 07:36:24 -0400 From: "Maddox, Buford J" Subject: RE: SIEMENS ACCELERATORS Sender: owner-linac-eng@plato.aristotle.net To: 'DP' , Linac Engineers Message-id: <36298D09ED1AD311B4DC0008C7F4D4E111466470@phsexch6.partners.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 26 May 2004 07:36:24 -0400 From: "Maddox, Buford J" Subject: RE: SIEMENS ACCELERATORS Sender: owner-linac-eng@plato.aristotle.net To: 'DP' , Linac Engineers X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Electrons are boiled off from the white hot gun cathode. They are then accelerated and focussed into a few mm hole in the first RF cavity of the accelerating guide (a stack of cylindrical RF cavities with a hole in the middle) by the gun high voltage. They are typically over 1/2 the speed of light when exiting the gun. The cavities have a high voltage across them which accelerates the electrons when the RF is on the positive 1/2 of the cycle. The first RF cavity bunches up the electrons, in sync with the peak of the RF, and brings them essentially to the speed of light. In a standing wave accelerating guide, each RF cavity gives the electrons more energy as they pass through. The Varian course used a stack of plates with batteries as an analogy. The RF which is out of sync, wrong polarity, occurrs in the side cavities, shortening the guide length. Another common analogy is that of a wave pool, where you might be kicked by the rise of each wave if you moved down the pool with the right speed. Or a series of revolving doors that smack your behind. The amount of energy added is based on the RF voltage present. Siemens varies the RF voltage to change the energy. Varian and Mitsubishi do the same, but also cause some cavites to have low Rf by inserting plungers, for low energy use. the Automatic Frequency Control is a critical component that keeps the waveguide on resonance for maximum RF efficiency and voltage developed in the cavities. It has a strong effect on the energy produced. The electrons absorb energy from the Rf, an effect called beam loading, which also affects the final energy. This is largest for the lower energies. At lower energies you need much more current because the dose per electron is lower and the guide is somewhat less efficient. Travelling wave linacs like the older Philips SL-75 work on a surfing analogy, where the electrons ride on an RF wave that travels down the guide once. Many of the above comments apply. But the waveguide cavities are very different. The Karzmark/Numan/Tanabe book "Medical Electron Accelerators" is good, especially on the Varian type machine. I also use it to teach, as mentioned. The above folksy description will get you started at a low level. Older books by Livingood and another by Livingston are very good, probably out of print. I think it is a very good idea for physicists and engineers to have a deeper, and shared, understanding of the linac so that the implications of work done are considered, and appropriate measurements are made afterward. Jerry MS Physics, Engineer by inclination -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of DP Sent: Tuesday, May 25, 2004 10:35 AM To: Linac Engineers Subject: SIEMENS ACCELERATORS Can anyone give me a short description of how Siemens modify their machines to enable generating 6MV and 18MV from the same waveguide? -- Darrell O. Poole Senior Physicist M.D. Anderson Cancer Center Orlando 321.841.7036 Office (Works sometimes and only when I am at my desk) 407.721.2658 CELL ( Works sometimes but ALWAYS after hours) 407.980.7024 BEEPER ( Works all the time) 407.649.6895 FAX dopoole@ieee.org  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HYB00B6MX2ZM0@hubbard.azu.nl>; Wed, 26 May 2004 18:13:49 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004052618134623904 ; Wed, 26 May 2004 18:13:46 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA26233; Wed, 26 May 2004 18:14:11 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma026153; Wed, 26 May 2004 18:13:53 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id JAA13984 for linac-eng-list; Wed, 26 May 2004 09:15:50 -0500 (CDT) Received: from PHSXCHICI4.partners.org (phsxchici4.mgh.harvard.edu [132.183.130.39]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id JAA13980 for ; Wed, 26 May 2004 09:15:48 -0500 (CDT) Received: by phsxchici4.mgh.harvard.edu with Internet Mail Service (5.5.2657.72) id ; Wed, 26 May 2004 10:15:55 -0400 Date: Wed, 26 May 2004 10:15:17 -0400 From: "Maddox, Buford J" Subject: RE: something to consider when cahnging a target in linac Sender: owner-linac-eng@plato.aristotle.net To: "'Xraytherapy@aol.com'" , linac-eng@plato.aristotle.net Message-id: <36298D09ED1AD311B4DC0008C7F4D4E111466472@phsexch6.partners.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_D5ebdcRWfb/YP3tWZU18xQ)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 26 May 2004 10:15:17 -0400 From: "Maddox, Buford J" Subject: RE: something to consider when cahnging a target in linac Sender: owner-linac-eng@plato.aristotle.net To: "'Xraytherapy@aol.com'" , linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_D5ebdcRWfb/YP3tWZU18xQ) Content-type: text/plain; charset=iso-8859-1 In theory, you could get radioactivity from as low as 8+Mv for the primary beam. I have never seen this. I haven't seen 10Mv make a radioactive target, but I would expect this to happen with the copper used around some targets, producing a low level. The bottom line is to check, and never touch them as the level changes with the distance. A survey meter is far away compared to your hand if you touch it, so you will get much higher levels to your finger. Talk to your friendly Physicist! Our 15Mv machine makes the target fairly radioactive. I would be interested in the levels people have measured. I recall levels in the mr/hr range. From my experience with high level research linacs (275Mv 1Amp), copper, nickel, iron are all likely radioactive isotopes. At very high levels even concrete and the air become radioactive. BTW, pulsed radiation from the Linac can saturate the some kinds of meters used for low level radioactivity checks. Beware Good post on a subject of interest to all.. Jerry (Radiation Safety Officer in a former job) -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Xraytherapy@aol.com Sent: Wednesday, May 26, 2004 7:46 AM To: linac-eng@plato.aristotle.net Subject: something to consider when cahnging a target in linac Hello all, I imagine that some of you have already seen this on the Physics bulletin board. I was unaware that targets became radioactive. Maybe I am the only one who didn't know this, but just in case, please take this into consideration when changing a target. Date: Tue, 25 May 2004 11:46:46 -0400 From: Lars Ewell Subject: Re: Radioactive Target Chris Hawkins, Greetings. This is an interesting question about what types of radionuclides are created in this machine. I believe that the main type of activation would be from neutron emission/capture. There is an empirical formula for the energy at which the Giant Dipole Resonance (GDR) is excited: E = 77(A)^(-1/3)MeV (see S.S. Hanna 'Proceedings of the Giant Multipole Resonance Topical Conference, 15-17 Oct. 1979, Oak Ridge Tenn.': Harwood Academic Puclbishers, New York 1980). So if the target is made of tungsten (A=184), you get an approximate energy of 14MeV for excitation of the GDR. This can dexcite by neutron emission, so that if you have photons of around this energy or higher then you can expect that neutrons will be generated in a tungsten target. After they are released, they can be captured by other nuclei so that I would suspect that tungsten 185 would be a potential radionuclide. It decays via beta emission with a 74.8d 1/2 life. Tungsten 183 would also be a radionuclide to consider. Looking at my copy of CRC handbook of chemistry and physics, I see that naturally occuring Tungsten is composed of isotopes ^182W, ^184W and ^186W, so radionuclides of one below and one above these isotopes are things to consider. Of course if the target is made of copper or something else, a different calculation needs to be done. Hope this helps. regards, Lars Ewell -------------------------------------------------------------------------------- -------- We just pulled the target out of a PRIMUS (nominal high energy 23 MV) and of course it is radioactive. With an ion survey meter the rate is 90 mR/hr at the surface of the hot side. The queries are: What radionuclides am I seeing?? What half-life can I expect?? --------------------------- Lars Ewell Physics Resident Department of Radiation Oncology University of Michigan Medical Center Doug Steers Danbury Engineering Inc. 194 Old Mount Tom Road Bantam, CT 06750 1-860-567-3054 www.danburyengineering.com --Boundary_(ID_D5ebdcRWfb/YP3tWZU18xQ) Content-type: text/html; charset=iso-8859-1
In theory, you could get radioactivity from as low as 8+Mv for the primary beam.  I have never seen this.  I haven't seen 10Mv make a radioactive target, but I would expect this to happen with the copper used around some targets, producing a low level.  The bottom line is to check, and never touch them as the level changes with the distance.  A survey meter is far away compared to your hand if you touch it, so you will get much higher levels to your finger.  Talk to your friendly Physicist!  Our 15Mv machine makes the target fairly radioactive.  I would be interested in the levels people have measured.  I recall levels in the mr/hr range.  From my experience with high level research linacs (275Mv 1Amp), copper, nickel, iron are all likely radioactive isotopes.  At very high levels even concrete and the air become radioactive. 
BTW, pulsed radiation from the Linac can saturate the some kinds of meters used for low level radioactivity checks.  Beware
Good post on a subject of interest to all..
Jerry
(Radiation Safety Officer in a former job)
 
-----Original Message-----
From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Xraytherapy@aol.com
Sent: Wednesday, May 26, 2004 7:46 AM
To: linac-eng@plato.aristotle.net
Subject: something to consider when cahnging a target in linac

Hello all,

I imagine that some of you have already seen this on the Physics bulletin board. I was unaware that targets became radioactive. Maybe I am the only one who didn't know this, but just in case, please take this into consideration when changing a target.

Date:    Tue, 25 May 2004 11:46:46 -0400
From:    Lars Ewell <ewell@MED.UMICH.EDU>
Subject: Re: Radioactive Target

Chris Hawkins,

  Greetings.

  This is an interesting question about what types of radionuclides
are created in this machine.

  I believe that the main type of activation would be from neutron
emission/capture.

  There is an empirical formula for the energy at which the Giant
Dipole
Resonance (GDR) is excited: E = 77(A)^(-1/3)MeV (see S.S. Hanna
'Proceedings
of the Giant Multipole Resonance Topical Conference, 15-17 Oct. 1979,
Oak Ridge Tenn.': Harwood Academic Puclbishers, New York 1980).  So if
the target is made of tungsten (A=184), you get an approximate energy
of 14MeV for excitation of the GDR.  This can dexcite by neutron
emission,
so that if you have photons of around this energy or higher then you
can
expect that neutrons will be generated in a tungsten target.

  After they are released, they can be captured by other nuclei so
that
I would suspect that tungsten 185 would be a potential radionuclide.
It
decays via beta emission with a 74.8d 1/2 life.  Tungsten 183 would
also
be a radionuclide to consider.  Looking at my copy of CRC handbook of
chemistry and physics, I see that naturally occuring Tungsten is
composed
of isotopes ^182W, ^184W and ^186W, so radionuclides of one below
and one above these isotopes are things to consider.

  Of course if the target is made of copper or something else, a
different
calculation needs to be done.

  Hope this helps.

  regards,

  Lars Ewell

----------------------------------------------------------------------------------------

We just pulled the target out of a PRIMUS (nominal high energy 23 MV)
and
of course it is radioactive. With an ion survey meter the rate is 90
mR/hr at
the surface of the hot side.

The queries are:

What radionuclides am I seeing??

What half-life can I expect??


---------------------------
Lars Ewell
Physics Resident
Department of Radiation Oncology
University of Michigan Medical Center




Doug Steers
Danbury Engineering Inc.
194 Old Mount Tom Road
Bantam, CT 06750
1-860-567-3054

www.danburyengineering.com
--Boundary_(ID_D5ebdcRWfb/YP3tWZU18xQ)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HYC000832QA5B@hubbard.azu.nl>; Wed, 26 May 2004 20:15:56 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004052620155426312 ; Wed, 26 May 2004 20:15:54 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id UAA12171; Wed, 26 May 2004 20:16:19 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma012105; Wed, 26 May 2004 20:16:03 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id LAA15596 for linac-eng-list; Wed, 26 May 2004 11:04:50 -0500 (CDT) Received: from ms-smtp-03-eri0.southeast.rr.com (ms-smtp-03-lbl.southeast.rr.com [24.25.9.102]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id LAA15592 for ; Wed, 26 May 2004 11:04:48 -0500 (CDT) Received: from RICHARDJKLEIN (clt75-122.carolina.rr.com [24.93.75.122]) by ms-smtp-03-eri0.southeast.rr.com (8.12.10/8.12.7) with SMTP id i4QG4jLq005017 for ; Wed, 26 May 2004 12:04:46 -0400 (EDT) Date: Wed, 26 May 2004 12:03:58 -0400 From: Richie Klein Subject: Varian Table Racquet Re-Stringing Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <001701c4433b$0e5e77a0$6500a8c0@RICHARDJKLEIN> MIME-version: 1.0 X-Mailer: Microsoft Outlook Express 6.00.2800.1409 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_s10F8FuqsBonb0UJSEURuQ)" Precedence: bulk X-MSMail-Priority: Normal X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 X-Virus-Scanned: Symantec AntiVirus Scan Engine X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 *** EOOH *** Date: Wed, 26 May 2004 12:03:58 -0400 From: Richie Klein Subject: Varian Table Racquet Re-Stringing Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-MSMail-Priority: Normal X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 X-Virus-Scanned: Symantec AntiVirus Scan Engine X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 This is a multi-part message in MIME format. --Boundary_(ID_s10F8FuqsBonb0UJSEURuQ) Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: quoted-printable Linear Accelerator Support Services has Varian Table Racquets for sale: ETR Table Racquets - newly re-strung and with the mylar cover - = $750/plus shipping We also re-string Varian and Nucletron Table Racquets. For more information, reply to this email or call 704-553-7708 --Boundary_(ID_s10F8FuqsBonb0UJSEURuQ) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: quoted-printable
Linear Accelerator Support Services has = Varian=20 Table Racquets for sale:
 
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--Boundary_(ID_s10F8FuqsBonb0UJSEURuQ)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HYC00FM4E714H@hubbard.azu.nl>; Thu, 27 May 2004 00:23:28 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004052700232531007 ; Thu, 27 May 2004 00:23:25 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id AAA13780; Thu, 27 May 2004 00:23:50 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma013751; Thu, 27 May 2004 00:23:45 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id PAA21305 for linac-eng-list; Wed, 26 May 2004 15:39:29 -0500 (CDT) Received: from BIOMED.MED.YALE.EDU (biomed.med.yale.edu [130.132.232.48]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id PAA21297 for ; Wed, 26 May 2004 15:39:28 -0500 (CDT) Received: from yale.edu (vitalip.med.yale.edu [130.132.213.170]) by biomed.med.yale.edu (PMDF V6.1-1 #30532) with ESMTP id <01LAK1TNXXY40096UN@biomed.med.yale.edu> for linac-eng@plato.aristotle.net; Wed, 26 May 2004 16:31:46 -0400 (EDT) Date: Wed, 26 May 2004 16:34:29 -0400 From: Peter Vitali Subject: Re: something to consider when cahnging a target in linac Sender: owner-linac-eng@plato.aristotle.net To: "Linac-Engineers, Listserver Mess" Message-id: <40B4FEEC.BF6C36D1@yale.edu> MIME-version: 1.0 X-Mailer: Mozilla 4.76 (Macintosh; U; PPC) Content-type: text/plain; charset=us-ascii; x-mac-type=54455854; x-mac-creator=4D4F5353 Content-transfer-encoding: 7bit Precedence: bulk X-Accept-Language: en X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 26 May 2004 16:34:29 -0400 From: Peter Vitali Subject: Re: something to consider when cahnging a target in linac Sender: owner-linac-eng@plato.aristotle.net To: "Linac-Engineers, Listserver Mess" X-Accept-Language: en X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Good Afternoon All: The target is not the only item to become radioactive. Any item that the high energy electrons (over 10Mev) can hit will also become radioactive. If the energy of the electron can produce neutrons when they are stopped, then we start seeing induced radioactivity. It depends on the beam line of the drift system. After the electrons leave the accelerator structure they now travel in a drift system until they reach the target or exit through the vacuum window as pure electrons. Depending on how the drift system is constructed, straight to a 90 degree bend magnet, straight to a 270 Achromatic bend magnet, or a slalom system with two to four bend magnets, where ever the beam changes direction there is going to be some electrons striking the walls of the bend magnets. In order to keep the beam in the center of the bend magnets there are usually Energy Determining Slits. These are usually copper bars inserted into the beam path to determine if the beam is of the correct energy. If the beam hits one of these slits because its energy is higher or lower than what the bend magnet is set for then the slits produce a correction signal to slightly change the energy so the electrons are in the middle of the bend path. "The energy determining slits shown in Figs. 23(a) and 23(b) are sources of leakage radiation from stopped electrons. However, this bremsstrahlung is direct away form the isocenter and not contributory to patient exposure." Medical Physics, Vol 11, No 2, Mar/Apr 1984 Page 121, Review Article: C.J. Karzmak: Advances in Linear Accelerator Design. They may not effect the patient but it can sure effect the engineer who has to work in this area when repairing the accelerator. We had a CGR Satittarie 25MV Linear Accelerator. The energy slits were in the tunnel between the Accelerator Room and the Treatment room. If they were running 25MV photons the slits got really radioactive. As a matter of fact both slits had thermal switches on them to shut down the beam if the beam energy did not change. One of the problems was that the thermal switches would get damaged by the radiation from the slit and electrons hitting them and have to be replaced. Usually we had to wait a couple of hours before we could change them. Also the slits had to be removed because the kapton insulation would also be damaged from the electrons striking the kapton and the radiation from the copper slit which would cause the slit to short to the frame of the bend magnet. Other items that were radioactive for a very shot time after the beam was on was the 120-degree bend magnet in the head, the target and filters, the couch top and the patient. My advice then is if you work on a machine with and photon energy higher than 10 MV do a survey of the head if you have to go into the bend magnet area. Don't forget the 3 rules to minimize exposure, Time, Distance and Shielding. My RSO, Mike Bohan, supplied a 4th rule: The 4th rule in this case is to wait for decay, if possible. Most activation products have short enough half-lives that a few hours of decay can make a big difference in exposures to a service engineer. I might also remind them that when removing irradiated parts , they should use remote handling tools instead of handling them directly. Hope this helps Peter E. Vitali, CBET Therapeutic Radiological Engineer Yale New Haven Hospital 20 York Street, HRT 22 New Haven, CT. 06504 Phone: (203) 688-2948 FAX: (203) 688-3663 E-mail: peter.vitali@yale.edu As usual, everything I say may be plausibly denied at my employer's convenience...  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HYE00BVG71R3G@hubbard.azu.nl>; Thu, 27 May 2004 23:44:21 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004052723441800831 ; Thu, 27 May 2004 23:44:18 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id XAA07059; Thu, 27 May 2004 23:44:45 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma007015; Thu, 27 May 2004 23:44:27 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id PAA11476 for linac-eng-list; Thu, 27 May 2004 15:07:04 -0500 (CDT) Received: from ismssclu2.umcaz.edu (smtp.umcaz.edu [198.60.159.10]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id PAA11472 for ; Thu, 27 May 2004 15:07:02 -0500 (CDT) Received: from xchange2k.umcaz.edu ([170.87.50.78]) by ismssclu2 with trend_ isnt_name_B; Thu, 27 May 2004 13:06:30 -0700 Date: Thu, 27 May 2004 13:06:30 -0700 From: "Watters, Dan" Subject: MD2 Collimator Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <9AE191E1E625364CA06663EA6752085902BE632D@xchange2k> MIME-version: 1.0 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_rDjyZbI+Hk6tg1GYCMOmng)" Precedence: bulk X-MimeOLE: Produced By Microsoft Exchange V6.0.6487.1 content-class: urn:content-classes:message Thread-Topic: MD2 Collimator Thread-Index: AcREJhge7NAGEpSXRwaNGJwnarDb6A== X-imss-version: 2.0 X-imss-result: Passed X-imss-scores: Clean:24.7700 C:20 M:1 S:5 R:5 X-imss-settings: Baseline:1 C:1 M:1 S:1 R:1 (0.0000 0.0000) X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 27 May 2004 13:06:30 -0700 From: "Watters, Dan" Subject: MD2 Collimator Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-MimeOLE: Produced By Microsoft Exchange V6.0.6487.1 content-class: urn:content-classes:message Thread-Topic: MD2 Collimator Thread-Index: AcREJhge7NAGEpSXRwaNGJwnarDb6A== X-imss-version: 2.0 X-imss-result: Passed X-imss-scores: Clean:24.7700 C:20 M:1 S:5 R:5 X-imss-settings: Baseline:1 C:1 M:1 S:1 R:1 (0.0000 0.0000) X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This is a multi-part message in MIME format. --Boundary_(ID_rDjyZbI+Hk6tg1GYCMOmng) Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: quoted-printable My thanks to all who responded to my message concerning the collimator = not moving when anything was inserted in slot 3 on the accessory holder. = Problem turned out to be a bad PROM on function controller 7. =20 Thank you, =20 Dan Watters Radiology Engineering University Med Center Tucson, Arizona --Boundary_(ID_rDjyZbI+Hk6tg1GYCMOmng) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: quoted-printable
My = thanks to all who=20 responded to my message concerning the collimator not moving when = anything was=20 inserted in slot 3 on the accessory holder.  Problem turned out to = be a bad=20 PROM on function controller 7.
 
Thank=20 you,
 
Dan=20 Watters
Radiology=20 Engineering
University Med=20 Center
Tucson,=20 Arizona
--Boundary_(ID_rDjyZbI+Hk6tg1GYCMOmng)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HYF005GV8C0E4@hubbard.azu.nl>; Fri, 28 May 2004 13:09:39 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004052813093616188 ; Fri, 28 May 2004 13:09:36 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id NAA10069; Fri, 28 May 2004 13:10:01 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma010015; Fri, 28 May 2004 13:09:44 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id EAA20267 for linac-eng-list; Fri, 28 May 2004 04:22:12 -0500 (CDT) Received: from hotmail.com (bay8-f110.bay8.hotmail.com [64.4.27.110]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id EAA20263 for ; Fri, 28 May 2004 04:22:10 -0500 (CDT) Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Fri, 28 May 2004 02:21:37 -0700 Received: from 65.30.223.163 by by8fd.bay8.hotmail.msn.com with HTTP; Fri, 28 May 2004 09:21:37 +0000 (GMT) Date: Fri, 28 May 2004 04:21:37 -0500 From: ROD WILLIAMS Subject: HDR and Elekta SLS Simulator Sender: owner-linac-eng@plato.aristotle.net X-Sender: roddmod@hotmail.com To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 Content-type: text/plain; CHARSET=US-ASCII; format=flowed Precedence: bulk X-Originating-IP: [65.30.223.163] X-Originating-Email: [roddmod@hotmail.com] X-OriginalArrivalTime: 28 May 2004 09:21:37.0969 (UTC) FILETIME=[2DA30210:01C44495] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 28 May 2004 04:21:37 -0500 From: ROD WILLIAMS Subject: HDR and Elekta SLS Simulator Sender: owner-linac-eng@plato.aristotle.net X-Sender: roddmod@hotmail.com To: linac-eng@plato.aristotle.net X-Originating-IP: [65.30.223.163] X-Originating-Email: [roddmod@hotmail.com] X-OriginalArrivalTime: 28 May 2004 09:21:37.0969 (UTC) FILETIME=[2DA30210:01C44495] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hello to all, I am looking for help for a problem that we here at Waukesha are having with our HDR room. We have an Elekta SLS simulator, which has a Philips SP 80 generator and the standard X-Tube. The problem has been and continues to be shooting films and fluoroing when the tube and II is in the lateral position. Shooting though the patients hip area left to right is tough, it takes multiple exposures sometimes three or four at max KV and MAS for one film. The fluoro is able to get though sometimes and sometimes not, this only using the 15-ma boost mode. I have them try to get the II and Tube as close as possible but this is hard to do with the leg supports on the table. I have had Philips in twice for the problem and the X-Ray tube has been replaced. This last time the II checked weak so they recommended that the II at a cost of 51 K be replaced. I have no problem doing this but if it takes so much to get a film from this machine I am thinking that even with spending 51K on a new II that the problem will still be there. So I thought I would post this to see if anyone else as any thoughts and what equipment they are using for their HDR rooms and if they are having the same problem getting though the patient with there X- Ray equipment. Thanks Rod ROD WILLIAMS ENCORE ENGINEERING SERVICES 7906 W. DIXON ST MILWAUKEE WI 53214  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HYG004PX0Q8R4@hubbard.azu.nl>; Fri, 28 May 2004 23:23:03 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004052823230029864 ; Fri, 28 May 2004 23:23:00 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id XAA03953; Fri, 28 May 2004 23:23:27 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xmaa03921; Fri, 28 May 2004 23:23:14 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id OAA27808 for linac-eng-list; Fri, 28 May 2004 14:14:06 -0500 (CDT) Received: from scmcmail.st-claire.org ([63.76.91.90]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id OAA27804 for ; Fri, 28 May 2004 14:14:04 -0500 (CDT) Received: by scmcmail.st-claire.org with Internet Mail Service (5.5.2655.55) id ; Fri, 28 May 2004 15:18:54 -0400 Date: Fri, 28 May 2004 15:18:48 -0400 From: "Conn, Calvin R." Subject: RE: HDR and Elekta SLS Simulator Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <570A1A6B6FADD04DABC7B4CBCAE0F180018DE897@scmcmail.st-claire.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2655.55) Content-type: text/plain; CHARSET=US-ASCII Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 28 May 2004 15:18:48 -0400 From: "Conn, Calvin R." Subject: RE: HDR and Elekta SLS Simulator Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hello Rod, I don't have this generator so I can't be specific. But, I can make some observations, suggestions, or ideas. You did not mention the techniques used while making the lat exposures so I don't know if they are reasonable or not. Have you had this machine for some time and if so are you trying to use techniques similar to what where using in the past? Is the fluoro max dose rate at the limit when you have trouble in fluoro mode? Why did they replace the x-ray tube? How do you define 'weak II tube', are you measuring it with a light meter and estimating a conversion factor or are depending on other estimates based on dose or depending on what Philips has told you? How is the processor QC running? Having problems in both the fluoro mode and radiographic mode seems to indicate the possibility of more than one problem. I don't know if this was any help or not, but, maybe it could give you some ideas of things to check out. Calvin R. Conn CRConn@st-claire.org  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HYK00061CFHS3@hubbard.azu.nl>; Mon, 31 May 2004 07:26:11 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004053107260532088 ; Mon, 31 May 2004 07:26:05 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id HAA14041; Mon, 31 May 2004 07:26:33 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma014020; Mon, 31 May 2004 07:26:22 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id WAA05487 for linac-eng-list; Sun, 30 May 2004 22:38:40 -0500 (CDT) Received: from mail2.adelaideradiotherapycentre.com.au (dibwar.lnk.telstra.net [165.228.3.69]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id WAA05483 for ; Sun, 30 May 2004 22:38:37 -0500 (CDT) Received: from akovendy (AZK [192.1.1.81]) by mail2.adelaideradiotherapycentre.com.au with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2655.55) id L4WVAWVF; Mon, 31 May 2004 13:26:06 +0930 Date: Mon, 31 May 2004 13:07:27 +0930 From: a kovendy Subject: LANTIS virus Sender: owner-linac-eng@plato.aristotle.net To: linac engineering list Message-id: <014b01c446c0$985fd920$510101c0@adelaideradiotherapycentre.com.au> Organization: ARC MIME-version: 1.0 X-Mailer: Microsoft Outlook Express 6.00.2800.1409 Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 7bit Precedence: bulk X-MSMail-Priority: Normal X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 *** EOOH *** Date: Mon, 31 May 2004 13:07:27 +0930 From: a kovendy Subject: LANTIS virus Sender: owner-linac-eng@plato.aristotle.net To: linac engineering list Organization: ARC X-MSMail-Priority: Normal X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 To all users of LANTIS, Has anyone been hit by a virus which attacks the Lantis file GLB.DLL ?? This file resides in the Lantis executable root directory and is required by Lantis and ViewStation ... but not PrimeView. The virus continually appens a .vir extension to the GLB.DLL file making it impossible to execute, delete or overwrite with a fresh copy. I have scoured the system registry and OS system files and found nothing. The virus scanner (NAI McAfee) has recognised it as a "Morphine" variant - but could not clean it, and a check of several antiVirus web sites have revealed nothing. The virus may have created a background task which constantly clobbers any new instances of GLB.DLL. Of some consolation is the fact that the patient database was unaffected. I believe some other Siemens sites have been hit by this virus - and they have done what we have been forced to do - wipe and reinstall. My main concern is that we may get hit again since we still have no idea how to block it. In appreciation of any info, Regards, Andrew Kovendy Manager, Physics, Engineering & IT Adelaide Radiotherapy Centre Adelaide, South Australia Tel 08 8223 3022 Mob 0429 698 198 Fax 08 8232 1243 email akovendy@adelaideradiotherapycentre.com.au  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HYK004JZFYIGS@hubbard.azu.nl>; Mon, 31 May 2004 08:42:24 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004053108421800180 ; Mon, 31 May 2004 08:42:18 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id IAA19401; Mon, 31 May 2004 08:42:46 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma019394; Mon, 31 May 2004 08:42:37 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id AAA06740 for linac-eng-list; Mon, 31 May 2004 00:02:47 -0500 (CDT) Received: from dalwhinnie.chhlth.govt.nz ([203.163.70.2]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id AAA06736 for ; Mon, 31 May 2004 00:02:44 -0500 (CDT) Received: from NTCHAVIMSS (ntchavimss.chhlth.govt.nz [159.117.27.250]) by dalwhinnie.chhlth.govt.nz (8.12.10/8.12.10/SuSE Linux 0.7) with ESMTP id i4V566TI031135 for ; Mon, 31 May 2004 17:06:06 +1200 Received: from SMTPGATE.CHHLTH.GOVT.NZ ([159.117.20.14]) by NTCHAVIMSS with InterScan Messaging Security Suite; Mon, 31 May 2004 17:02:10 +1200 Received: from CHCH2-MTA by SMTPGATE.CHHLTH.GOVT.NZ with Novell_GroupWise; Mon, 31 May 2004 17:02:10 +1200 Date: Mon, 31 May 2004 17:02:05 +1200 From: Dave Pinchin Subject: Re: LANTIS virus Sender: owner-linac-eng@plato.aristotle.net To: akovendy@adelaideradiotherapycentre.com.au, linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.0.4 Content-type: text/plain; charset=US-ASCII Content-disposition: inline Content-transfer-encoding: 8bit Precedence: bulk X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id AAA06737 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 31 May 2004 17:02:05 +1200 From: Dave Pinchin Subject: Re: LANTIS virus Sender: owner-linac-eng@plato.aristotle.net To: akovendy@adelaideradiotherapycentre.com.au, linac-eng@plato.aristotle.net Content-disposition: inline X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id AAA06737 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f G'day, I suspect this is not actually a virus. Contact McAffee to get this one sorted out. As you all will know, antivirus software looks for particular fingerprints which 99 time out of 100 indicates that a virus is present. Most modern software sets up a quarantine regime where a suspected virus can be 'locked away' until it's proved safe (or otherwise). I suspect you've found the 1 out of 100 and the file is locked in quarantine. The file is safe but is quarantined. Contact McAffee to verify the file as safe or otherwise, they will have a hotline where advice can be sought. Using the words like 'Clinical' 'Treatment' 'radiotherapy' etc may cut through the red tape babble and give you the priority you need. McAffee will NEED to examine your file and they will produce a revised fingerprint file to prevent the false positives. I once had a .txt file which emailing s/w had a fit over. The file was a joke stating that "Mad Cow disease was the only virus not transmitted by Outlook Express" and that "microsoft are trying to solve this issue......" I guess using the words "outlook express" and "Virus" tripped the fingerprint algorythm. Good luck Dave. >>> "a kovendy" 31/05/04 15:37:27 >>> To all users of LANTIS, Has anyone been hit by a virus which attacks the Lantis file GLB.DLL ?? This file resides in the Lantis executable root directory and is required by Lantis and ViewStation ... but not PrimeView. The virus continually appens a ..vir extension to the GLB.DLL file making it impossible to execute, delete or overwrite with a fresh copy. I have scoured the system registry and OS system files and found nothing. The virus scanner (NAI McAfee) has recognised it as a "Morphine" variant - but could not clean it, and a check of several antiVirus web sites have revealed nothing. The virus may have created a background task which constantly clobbers any new instances of GLB.DLL. Of some consolation is the fact that the patient database was unaffected. I believe some other Siemens sites have been hit by this virus - and they have done what we have been forced to do - wipe and reinstall. My main concern is that we may get hit again since we still have no idea how to block it. In appreciation of any info, Regards, Andrew Kovendy Manager, Physics, Engineering & IT Adelaide Radiotherapy Centre Adelaide, South Australia Tel 08 8223 3022 Mob 0429 698 198 Fax 08 8232 1243 email akovendy@adelaideradiotherapycentre.com.au ********************************************************************** This email and attachments have been scanned for content and viruses and is believed to be clean This email or attachments may contain confidential or legally privileged information intended for the sole use of the addressee(s). 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Any views or opinions expressed in this email (unless otherwise stated) may not represent those of Canterbury District Health Board **********************************************************************  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HYK004Y8H6OGS@hubbard.azu.nl>; Mon, 31 May 2004 09:08:50 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004053109084800420 ; Mon, 31 May 2004 09:08:48 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id JAA21311; Mon, 31 May 2004 09:09:16 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma021303; Mon, 31 May 2004 09:09:14 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id AAA07050 for linac-eng-list; Mon, 31 May 2004 00:26:03 -0500 (CDT) Received: from gondor.dpa.act.gov.au (gondor.dpa.act.gov.au [136.153.2.50]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id AAA07046 for ; Mon, 31 May 2004 00:26:00 -0500 (CDT) Received: (from smap@localhost) by gondor.dpa.act.gov.au (8.11.1/8.11.1) id i4V5Po725220 for ; Mon, 31 May 2004 15:25:50 +1000 (EST) Received: from unknown(10.226.2.7) by gondor via smap (V5.5) id xma025094; Mon, 31 May 2004 15:25:40 +1000 Received: by cal007.dpa.act.gov.au with Internet Mail Service (5.5.2657.72) id ; Mon, 31 May 2004 15:25:40 +1000 Date: Mon, 31 May 2004 15:25:31 +1000 From: "Caunt, Peter" Subject: Re: Carrousel Noise Errors Sender: owner-linac-eng@plato.aristotle.net To: "Linac Eng (E-mail)" Message-id: <2FC7DBCD6D6AD611AD7B0090278CABAEE79E94@CAL030> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 31 May 2004 15:25:31 +1000 From: "Caunt, Peter" Subject: Re: Carrousel Noise Errors Sender: owner-linac-eng@plato.aristotle.net To: "Linac Eng (E-mail)" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Listservmembers, And the winner is .......Mr Chris Bartee from VCU Health Systems.....the closest to the fault. O.K. Intermittent carrousel faults - two faults in one. The first being the carrousel position pot, intermittent after 3 years - found when obtaining both extender cards needed for C3 type carrousel/Bmag control cards - measuring the pot voltage at the board with a CRO. The second, W57 gantry patch to Aux electronics, chewed through by the water hose fitting - a common enough problem for Mr V to have a cable in stock. At particular gantry angles grounded the (-) terminal of the carrousel motor - allowed carrousel to be driven in only one direction by PWM signal. NB W57 runs pos R&T, buncher R&T, Angle R&T, Trim, Target, coll rotation and carrousel rotation. Any one of which can be grounded through the wearing of this cable - well worth a look at the back of the stand if any such problems present. Thanks to all who responded. Kind Regards, Peter Caunt Rad Onc Canberra, Australia. "Important: This transmission is intended only for the use of the addressee and may contain confidential or legally privileged information. If you are not the intended recipient, you are notified that any use or dissemination of this communication is strictly prohibited. If you receive this transmission in error please notify the author immediately and delete all copies of this transmission." ---------------------------------------------------------------------------- ------------------------------------------ This email, and any attachments, may be confidential and also privileged. If you are not the intended recipient: Please notify the sender and delete all copies of this transmission along with any attachments immediately. You should not copy or use it for any purpose, nor disclose its contents to any other person. ---------------------------------------------------------------------------- ------------------------------------------  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HYK00BQSZBVOH@hubbard.azu.nl>; Mon, 31 May 2004 15:40:44 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004053115404206306 ; Mon, 31 May 2004 15:40:42 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id PAA00883; Mon, 31 May 2004 15:41:11 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma000861; Mon, 31 May 2004 15:40:45 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id GAA11710 for linac-eng-list; Mon, 31 May 2004 06:58:46 -0500 (CDT) Received: from web25109.mail.ukl.yahoo.com (web25109.mail.ukl.yahoo.com [217.12.10.57]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id GAA11706 for ; Mon, 31 May 2004 06:58:44 -0500 (CDT) Received: from [210.0.229.221] by web25109.mail.ukl.yahoo.com via HTTP; Mon, 31 May 2004 12:58:13 +0100 (BST) Date: Mon, 31 May 2004 12:58:13 +0100 (BST) From: =?iso-8859-1?q?kim=20yeung?= Subject: Re: DS12 & Yield interlocks Sender: owner-linac-eng@plato.aristotle.net To: Linac-Eng Message-id: <20040531115813.21243.qmail@web25109.mail.ukl.yahoo.com> MIME-version: 1.0 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_5VY7c+UOJi4DetJcwl5voA)" Content-transfer-encoding: 8BIT Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 31 May 2004 12:58:13 +0100 (BST) From: =?iso-8859-1?q?kim=20yeung?= Subject: Re: DS12 & Yield interlocks Sender: owner-linac-eng@plato.aristotle.net To: Linac-Eng X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f --Boundary_(ID_5VY7c+UOJi4DetJcwl5voA) Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 8bit Hi Colleagues, Varian 600CD Version 6.1 We experience frequent sudden changes of dose rate this causes DS12 and Yield interlocks in our 600CD Clinac. We notice the magnetron current is unstable, even when the dose rate and yield servo are off and the PFN voltage has a flat-bottom waveform. The delay line and the phase wand have been adjusted but no luck. Any advice or suggestion? Kim Yeung --------------------------------- Yahoo! Messenger - Communicate instantly..."Ping" your friends today! Download Messenger Now --Boundary_(ID_5VY7c+UOJi4DetJcwl5voA) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: 8bit
Hi Colleagues,
 
Varian 600CD Version 6.1
 
We experience frequent sudden changes of dose rate this causes  DS12 and Yield interlocks in our  600CD Clinac.
 
We notice the magnetron current is unstable, even when the dose rate  and yield servo are off and the PFN voltage has a flat-bottom waveform.
 
The delay line and the phase wand have been adjusted but no luck.
 
Any advice or suggestion?
 
Kim Yeung

Yahoo! Messenger - Communicate instantly..."Ping" your friends today! Download Messenger Now --Boundary_(ID_5VY7c+UOJi4DetJcwl5voA)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HYM00BTXVXXDC@hubbard.azu.nl>; Tue, 1 Jun 2004 16:23:08 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004060116230007899 ; Tue, 01 Jun 2004 16:23:00 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id QAA14528; Tue, 01 Jun 2004 16:23:27 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma014388; Tue, 01 Jun 2004 16:22:58 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id GAA03054 for linac-eng-list; Tue, 01 Jun 2004 06:35:00 -0500 (CDT) Received: from mail.cbdha.nshealth.ca (mail.cbdha.nshealth.ca [142.176.129.245]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id GAA03050 for ; Tue, 01 Jun 2004 06:34:58 -0500 (CDT) Received: from ELECTECH ([128.222.7.122]) by mail.cbdha.nshealth.ca (Merak 7.2.3) with SMTP id LOA74478 for ; Tue, 01 Jun 2004 08:34:53 -0300 Date: Tue, 01 Jun 2004 08:33:05 -0300 From: Greg MacKinnon Subject: 2100C/D HWFA interlock Sender: owner-linac-eng@plato.aristotle.net To: "LinacEng (E-mail)" Message-id: <001301c447cc$35a12430$7a07de80@ELECTECH> MIME-version: 1.0 X-Mailer: Microsoft Outlook CWS, Build 9.0.2416 (9.0.2910.0) Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 7bit Importance: Normal Precedence: bulk X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 (Normal) *** EOOH *** Date: Tue, 01 Jun 2004 08:33:05 -0300 From: Greg MacKinnon Subject: 2100C/D HWFA interlock Sender: owner-linac-eng@plato.aristotle.net To: "LinacEng (E-mail)" Importance: Normal X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 (Normal) Hi Group Over the last month I have seen on my 2100C/D three occurs of HWFA interlock. The EVENT log for each reported as follows: HWFA: Primary/2nd cha mismatch 03 UJ2. HWFA: Primary/2nd cha mismatch 03 Gantry. HWFA: Controller Interlock CPU Beam ON/OFF failed while turning Beam on. The first two cleared after entering or leaving service mode, therapist in process of setting up patient when interlock occur and lost pendant motions. The third one cleared after turning the key from Ready, therapist depressed the BEAM ON button then fault occurred. Is it possible they are all related to a common faulty part or is this three separate items failing. Any information would be appreciated. Thanks in advance __________________________________________ Greg MacKinnon, C.E.T. Linear Accelerator Service Technologist Cape Breton Cancer Centre 1482 George Street Sydney, Nova Scotia, Canada B1P 1P3 tel: (902) 567-8076 fax: (902) 567-8075 email: mackinnongreg@cbdha.nshealth.ca  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HYN000SG3R0LT@hubbard.azu.nl>; Tue, 1 Jun 2004 19:11:35 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004060119112912755 ; Tue, 01 Jun 2004 19:11:29 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA12071; Tue, 01 Jun 2004 19:11:55 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma011997; Tue, 01 Jun 2004 19:11:35 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id KAA06729 for linac-eng-list; Tue, 01 Jun 2004 10:28:38 -0500 (CDT) Received: from glsmtp2.gundluth.org (glsmtp2-1.gundluth.org [204.69.147.17] (may be forged)) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id KAA06724; Tue, 01 Jun 2004 10:28:36 -0500 (CDT) Date: Tue, 01 Jun 2004 10:28:29 -0500 From: ajengstl@gundluth.org Subject: Re: 2100C/D HWFA interlock Sender: owner-linac-eng@plato.aristotle.net To: Greg MacKinnon Cc: "LinacEng (E-mail)" , owner-linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Lotus Notes Release 5.0.9 November 16, 2001 Content-type: text/plain; charset=us-ascii Precedence: bulk X-MIMETrack: Serialize by Router on GLSMTP2/GUNDLUTH(Release 5.0.12 |February 13, 2003) at 06/01/2004 10:23:35 AM X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 01 Jun 2004 10:28:29 -0500 From: ajengstl@gundluth.org Subject: Re: 2100C/D HWFA interlock Sender: owner-linac-eng@plato.aristotle.net To: Greg MacKinnon Cc: "LinacEng (E-mail)" , owner-linac-eng@plato.aristotle.net X-MIMETrack: Serialize by Router on GLSMTP2/GUNDLUTH(Release 5.0.12 |February 13, 2003) at 06/01/2004 10:23:35 AM X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f .Greg, In my humble experience the first 2 usually mean a primary or secondary pot is bad or jaws need cleaning/lube. Look in the event log to see what the pot readings were at the time of fault. Sometimes doing a recal. corrects it if Pri/Sec not off much. The CPU Beam on/off can be a keyswitch, the Beam on keyswitch, the control processor, maybe one of the timer boards. Could be other things but these are the ones I can remember now. This one is tough to find sometimes. Alan Engstler Gundersen Lutheran The information transmitted above is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material. Any review,retransmission,dissemination or other use of or taking of any action in reliance upon this information by persons or entities other than the intended recipient is prohibited. If you received this message in error, please contact the above party and delete the material from any computer or server. Thank you. "Greg MacKinnon" ealth.ca> cc: Sent by: Subject: 2100C/D HWFA interlock owner-linac-eng@plato.ar istotle.net 06/01/04 08:33 AM Hi Group Over the last month I have seen on my 2100C/D three occurs of HWFA interlock. The EVENT log for each reported as follows: HWFA: Primary/2nd cha mismatch 03 UJ2. HWFA: Primary/2nd cha mismatch 03 Gantry. HWFA: Controller Interlock CPU Beam ON/OFF failed while turning Beam on. The first two cleared after entering or leaving service mode, therapist in process of setting up patient when interlock occur and lost pendant motions. The third one cleared after turning the key from Ready, therapist depressed the BEAM ON button then fault occurred. Is it possible they are all related to a common faulty part or is this three separate items failing. Any information would be appreciated. Thanks in advance __________________________________________ Greg MacKinnon, C.E.T. Linear Accelerator Service Technologist Cape Breton Cancer Centre 1482 George Street Sydney, Nova Scotia, Canada B1P 1P3 tel: (902) 567-8076 fax: (902) 567-8075 email: mackinnongreg@cbdha.nshealth.ca  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HYN003YK5VTB2@hubbard.azu.nl>; Tue, 1 Jun 2004 19:57:31 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004060119572813608 ; Tue, 01 Jun 2004 19:57:28 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA17629; Tue, 01 Jun 2004 19:57:55 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma017597; Tue, 01 Jun 2004 19:57:29 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id LAA07482 for linac-eng-list; Tue, 01 Jun 2004 11:10:53 -0500 (CDT) Received: from email-out-01.biz.rr.com (email-out-01.biz.rr.com [24.30.200.26]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id LAA07478 for ; Tue, 01 Jun 2004 11:10:49 -0500 (CDT) Received: from fep03.biz.rr.com (fep03.biz.rr.com [24.30.201.200]) by email-out-01.biz.rr.com (8.12.10/8.12.10) with ESMTP id i51GAhed021104 for ; Tue, 01 Jun 2004 12:10:44 -0400 (EDT) Received: from pent4 ([24.173.18.166]) by fep03.biz.rr.com with ESMTP id <20040601161042.NLQA914.fep03.biz.rr.com@pent4> for ; Tue, 01 Jun 2004 12:10:42 -0400 Date: Tue, 01 Jun 2004 11:10:05 -0500 From: Thomas McCausland Subject: Orthovoltage -Bucky X-ray Sender: owner-linac-eng@plato.aristotle.net To: Linac Engineers Reply-to: acceltek@acceltekservice.com Message-id: <40BC640D.19612.1E354E@localhost> MIME-version: 1.0 X-Mailer: Pegasus Mail for Win32 (v3.12c) Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 01 Jun 2004 11:10:05 -0500 From: Thomas McCausland Subject: Orthovoltage -Bucky X-ray Sender: owner-linac-eng@plato.aristotle.net To: Linac Engineers Reply-to: acceltek@acceltekservice.com X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f We have a customer that has an orthovoltage treatment unit made by Bucky X-Ray International, from New York, NY. - produced in 1995. They want a door interlock switch connected to it, but they don't have any schematics for the machine. Does anyone have schematics for this unit, or can tell me where the connect point for a door switch would go. The model number is 6520.310. Thomas W. McCausland AccelTek Inc. 281-652-0059 888-619-8811  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HYO001VDOEHW2@hubbard.azu.nl>; Wed, 2 Jun 2004 15:36:32 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004060215362908358 ; Wed, 02 Jun 2004 15:36:29 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id PAA24858; Wed, 02 Jun 2004 15:36:57 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xmab24689; Wed, 02 Jun 2004 15:36:18 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id GAA26297 for linac-eng-list; Wed, 02 Jun 2004 06:53:13 -0500 (CDT) Received: from imo-m20.mx.aol.com (imo-m20.mx.aol.com [64.12.137.1]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id GAA26293 for ; Wed, 02 Jun 2004 06:53:11 -0500 (CDT) Received: from Xraytherapy@aol.com by imo-m20.mx.aol.com (mail_out_v37_r2.6.) id y.f5.3c3c4f2b (25305) for ; Wed, 02 Jun 2004 07:52:38 -0400 (EDT) Date: Wed, 02 Jun 2004 07:52:38 -0400 (EDT) From: Xraytherapy@aol.com Subject: orthovoltage Bucky X-Ray Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: 8.0 for Windows sub 6025 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_35KDKVYBovZx2kEaClW/xg)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 02 Jun 2004 07:52:38 -0400 (EDT) From: Xraytherapy@aol.com Subject: orthovoltage Bucky X-Ray Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f --Boundary_(ID_35KDKVYBovZx2kEaClW/xg) Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7bit Hello Thomas, Our company deals exclusively in superficial and orthovoltage x-ray systems. We have parts and manuals for the Bucky units here, as well as all other manufacturers equipment. Please call me 9AM to 5 PM Eastern time for help. Kind regards, Doug Steers Danbury Engineering Inc. 194 Old Mount Tom Road Bantam, CT 06750 1-860-567-3054 www.danburyengineering.com --Boundary_(ID_35KDKVYBovZx2kEaClW/xg) Content-type: text/html; charset=US-ASCII Content-transfer-encoding: quoted-printable Hello Thomas,

Our company deals exclusively in superficial and orthovoltage x-ray systems.= We have parts and manuals for the Bucky units here, as well as all other ma= nufacturers equipment.

Please call me 9AM to 5 PM Eastern time for help.

Kind regards,

Doug Steers
Danbury Engineering Inc.
194 Old Mount Tom Road
Bantam, CT 06750
1-860-567-3054

www.danburyengineering.com
 --Boundary_(ID_35KDKVYBovZx2kEaClW/xg)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HYP0088ZK68FZ@hubbard.azu.nl>; Thu, 3 Jun 2004 03:01:22 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004060303011922147 ; Thu, 03 Jun 2004 03:01:19 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id DAA21520; Thu, 03 Jun 2004 03:01:47 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma021481; Thu, 03 Jun 2004 03:01:14 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id SAA09320 for linac-eng-list; Wed, 02 Jun 2004 18:17:18 -0500 (CDT) Received: from PHSEXCHICO.MGH.HARVARD.EDU (phsexchico.mgh.harvard.edu [132.183.126.50]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id SAA09316 for ; Wed, 02 Jun 2004 18:17:16 -0500 (CDT) Received: by phsexchico.mgh.harvard.edu with Internet Mail Service (5.5.2657.72) id ; Wed, 02 Jun 2004 19:15:36 -0400 Date: Wed, 02 Jun 2004 19:15:32 -0400 From: "Maddox, Buford J" Subject: RE: DS12 & Yield interlocks Sender: owner-linac-eng@plato.aristotle.net To: 'kim yeung' , Linac-Eng Message-id: <36298D09ED1AD311B4DC0008C7F4D4E111466480@phsexch6.partners.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_0Ye+4wXRDvJi/Iic5luJ/Q)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 02 Jun 2004 19:15:32 -0400 From: "Maddox, Buford J" Subject: RE: DS12 & Yield interlocks Sender: owner-linac-eng@plato.aristotle.net To: 'kim yeung' , Linac-Eng X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_0Ye+4wXRDvJi/Iic5luJ/Q) Content-type: text/plain; charset=iso-8859-1 I assume you have smooth tuning on both sides of resonance, no jumps. What is the nature of the Mag I instability? Leading edge, trailing edge breakup, jumps in the middle of the pulse? Typical bad magnetron symptoms. Or is the pulse shape ok, just jumping in the height, typical of a DeQing problem? If you look on a longer time scale, is there a pattern on charge I indicative of a line related problem? Is target I showing instability? Any vacuum activity? I have installed a toroid on the gun leads (well insulated) sometimes to look at the gun pulse. Hope this gives you some ideas. Or is it already fixed? Jerry -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of kim yeung Sent: Monday, May 31, 2004 7:58 AM To: Linac-Eng Subject: Re: DS12 & Yield interlocks Hi Colleagues, Varian 600CD Version 6.1 We experience frequent sudden changes of dose rate this causes DS12 and Yield interlocks in our 600CD Clinac. We notice the magnetron current is unstable, even when the dose rate and yield servo are off and the PFN voltage has a flat-bottom waveform. The delay line and the phase wand have been adjusted but no luck. Any advice or suggestion? Kim Yeung _____ Yahoo! Messenger - Communicate instantly..."Ping" your friends today! Download Messenger Now --Boundary_(ID_0Ye+4wXRDvJi/Iic5luJ/Q) Content-type: text/html; charset=iso-8859-1
I assume you have smooth tuning on both sides of resonance, no jumps. 
What is the nature of the Mag I instability?  Leading edge, trailing edge breakup, jumps in the middle of the pulse?  Typical bad magnetron symptoms.
Or is the pulse shape ok, just jumping in the height, typical of a DeQing problem?  If you look on a longer time scale, is there a pattern on charge I indicative of a line related problem?  Is target I showing instability?  Any vacuum activity? 
I have installed a toroid on the gun leads (well insulated) sometimes to look at the gun pulse.
Hope this gives you some ideas.  Or is it already fixed?
Jerry
-----Original Message-----
From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of kim yeung
Sent: Monday, May 31, 2004 7:58 AM
To: Linac-Eng
Subject: Re: DS12 & Yield interlocks

Hi Colleagues,
 
Varian 600CD Version 6.1
 
We experience frequent sudden changes of dose rate this causes  DS12 and Yield interlocks in our  600CD Clinac.
 
We notice the magnetron current is unstable, even when the dose rate  and yield servo are off and the PFN voltage has a flat-bottom waveform.
 
The delay line and the phase wand have been adjusted but no luck.
 
Any advice or suggestion?
 
Kim Yeung

Yahoo! Messenger - Communicate instantly..."Ping" your friends today! Download Messenger Now
--Boundary_(ID_0Ye+4wXRDvJi/Iic5luJ/Q)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HYQ008GXNNTGL@hubbard.azu.nl>; Thu, 3 Jun 2004 17:14:38 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004060317143215516 ; Thu, 03 Jun 2004 17:14:32 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id RAA14257; Thu, 03 Jun 2004 17:15:00 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma014139; Thu, 03 Jun 2004 17:14:27 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id IAA19673 for linac-eng-list; Thu, 03 Jun 2004 08:12:04 -0500 (CDT) Received: from ms-smtp-03-eri0.southeast.rr.com (ms-smtp-03-lbl.southeast.rr.com [24.25.9.102]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id IAA19669 for ; Thu, 03 Jun 2004 08:12:02 -0500 (CDT) Received: from RICHARDJKLEIN (clt75-122.carolina.rr.com [24.93.75.122]) by ms-smtp-03-eri0.southeast.rr.com (8.12.10/8.12.7) with SMTP id i53DC0Lq012596 for ; Thu, 03 Jun 2004 09:12:00 -0400 (EDT) Date: Thu, 03 Jun 2004 09:12:06 -0400 From: Richie Klein Subject: Varian Morning Warm-up printers Sender: owner-linac-eng@plato.aristotle.net To: linac Message-id: <000a01c4496c$5f0b7ae0$6500a8c0@RICHARDJKLEIN> MIME-version: 1.0 X-Mailer: Microsoft Outlook Express 6.00.2800.1409 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_R9PentLaLGuvWXYbMlxQgQ)" Precedence: bulk X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 X-Virus-Scanned: Symantec AntiVirus Scan Engine X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 *** EOOH *** Date: Thu, 03 Jun 2004 09:12:06 -0400 From: Richie Klein Subject: Varian Morning Warm-up printers Sender: owner-linac-eng@plato.aristotle.net To: linac X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 X-Virus-Scanned: Symantec AntiVirus Scan Engine X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 This is a multi-part message in MIME format. --Boundary_(ID_R9PentLaLGuvWXYbMlxQgQ) Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: quoted-printable Hello, Has anyone replaced the Varian supplied printer with a laser or ink-jet = printer and is it working well? Older "C" series Clinacs used the HP Quiet Jet and the newer ones use = the Okidata Microline 590. Any information would be appreciated. Richie Klein RS&A --Boundary_(ID_R9PentLaLGuvWXYbMlxQgQ) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: quoted-printable
Hello,
 
Has anyone replaced the Varian supplied = printer=20 with a laser or ink-jet printer and is it working = well?
Older "C" series Clinacs used the HP = Quiet Jet and=20 the newer ones use the Okidata Microline 590.
Any information would be = appreciated.
 
Richie Klein
RS&A
--Boundary_(ID_R9PentLaLGuvWXYbMlxQgQ)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HYQ00FEGRHCXJ@hubbard.azu.nl>; Thu, 3 Jun 2004 18:36:54 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004060318364917796 ; Thu, 03 Jun 2004 18:36:49 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA27117; Thu, 03 Jun 2004 18:37:17 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma027085; Thu, 03 Jun 2004 18:36:55 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id JAA22545 for linac-eng-list; Thu, 03 Jun 2004 09:41:43 -0500 (CDT) Received: from PHSXCHICI3.partners.org (phsxchici3.mgh.harvard.edu [132.183.130.38]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id JAA22541 for ; Thu, 03 Jun 2004 09:41:42 -0500 (CDT) Received: by phsxchici3.mgh.harvard.edu with Internet Mail Service (5.5.2657.72) id ; Thu, 03 Jun 2004 10:41:27 -0400 Date: Thu, 03 Jun 2004 10:40:41 -0400 From: "Maddox, Buford J" Subject: RE: Carrousel Noise Errors Sender: owner-linac-eng@plato.aristotle.net To: "'Caunt, Peter'" , "Linac Eng (E-mail)" Message-id: <36298D09ED1AD311B4DC0008C7F4D4E111466484@phsexch6.partners.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 03 Jun 2004 10:40:41 -0400 From: "Maddox, Buford J" Subject: RE: Carrousel Noise Errors Sender: owner-linac-eng@plato.aristotle.net To: "'Caunt, Peter'" , "Linac Eng (E-mail)" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f For those of you who listen to Garrison Keillor, Prairie Home Companion on PBS (USA), duct tape solves everything. We often use it on the gantry cables at spots that rub. TX for posting answers. Any suggestions on the problem I and another person posted recently, the pro-spro mismatch interlock which is not really what it seems, but affects several locations, and may be in the console processing somewhere? This is not the common problem we all know how to fix, a pot mismatch. The mismatch ilk is only a symptom, many more show up on the same event in the event log. It is intermittent, and the cause is gone when you look, a lot of grief. You have all been there, I'm sure. Post a few stories. Jerry -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Caunt, Peter Sent: Monday, May 31, 2004 1:26 AM To: Linac Eng (E-mail) Subject: Re: Carrousel Noise Errors Listservmembers, And the winner is .......Mr Chris Bartee from VCU Health Systems.....the closest to the fault. O.K. Intermittent carrousel faults - two faults in one. The first being the carrousel position pot, intermittent after 3 years - found when obtaining both extender cards needed for C3 type carrousel/Bmag control cards - measuring the pot voltage at the board with a CRO. The second, W57 gantry patch to Aux electronics, chewed through by the water hose fitting - a common enough problem for Mr V to have a cable in stock. At particular gantry angles grounded the (-) terminal of the carrousel motor - allowed carrousel to be driven in only one direction by PWM signal. NB W57 runs pos R&T, buncher R&T, Angle R&T, Trim, Target, coll rotation and carrousel rotation. Any one of which can be grounded through the wearing of this cable - well worth a look at the back of the stand if any such problems present. Thanks to all who responded. Kind Regards, Peter Caunt Rad Onc Canberra, Australia. "Important: This transmission is intended only for the use of the addressee and may contain confidential or legally privileged information. If you are not the intended recipient, you are notified that any use or dissemination of this communication is strictly prohibited. If you receive this transmission in error please notify the author immediately and delete all copies of this transmission." ---------------------------------------------------------------------------- ------------------------------------------ This email, and any attachments, may be confidential and also privileged. If you are not the intended recipient: Please notify the sender and delete all copies of this transmission along with any attachments immediately. You should not copy or use it for any purpose, nor disclose its contents to any other person. ---------------------------------------------------------------------------- ------------------------------------------  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HYQ00LH6UZIK9@hubbard.azu.nl>; Thu, 3 Jun 2004 19:52:32 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004060319522918977 ; Thu, 03 Jun 2004 19:52:29 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA05286; Thu, 03 Jun 2004 19:52:57 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma005248; Thu, 03 Jun 2004 19:52:25 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id KAA23544 for linac-eng-list; Thu, 03 Jun 2004 10:57:21 -0500 (CDT) Received: from glsmtp1.gundluth.org (glsmtp1-2.gundluth.org [204.69.146.15] (may be forged)) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id KAA23531; Thu, 03 Jun 2004 10:57:05 -0500 (CDT) Date: Thu, 03 Jun 2004 10:55:07 -0500 From: ajengstl@gundluth.org Subject: Re: Varian Morning Warm-up printers Sender: owner-linac-eng@plato.aristotle.net To: Richie Klein Cc: linac , owner-linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Lotus Notes Release 5.0.9 November 16, 2001 Content-type: text/plain; charset=us-ascii Precedence: bulk X-MIMETrack: Serialize by Router on GLSMTP1/GUNDLUTH(Release 5.0.12 |February 13, 2003) at 06/03/2004 11:07:43 AM X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 03 Jun 2004 10:55:07 -0500 From: ajengstl@gundluth.org Subject: Re: Varian Morning Warm-up printers Sender: owner-linac-eng@plato.aristotle.net To: Richie Klein Cc: linac , owner-linac-eng@plato.aristotle.net X-MIMETrack: Serialize by Router on GLSMTP1/GUNDLUTH(Release 5.0.12 |February 13, 2003) at 06/03/2004 11:07:43 AM X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Greetings, I hooked up a HP laserjet 4P with no problems. Worked with whatever drivers Varian uses. Alan Engstler Gundersen Lutheran "Richie Klein" m> cc: Sent by: Subject: Varian Morning Warm-up printers owner-linac-eng@plato.ar istotle.net 06/03/04 08:12 AM Hello, Has anyone replaced the Varian supplied printer with a laser or ink-jet printer and is it working well? Older "C" series Clinacs used the HP Quiet Jet and the newer ones use the Okidata Microline 590. Any information would be appreciated. Richie Klein RS&A  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HYQ003D4XH59J@hubbard.azu.nl>; Thu, 3 Jun 2004 20:46:19 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004060320461619851 ; Thu, 03 Jun 2004 20:46:16 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id UAA11432; Thu, 03 Jun 2004 20:46:45 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma011401; Thu, 03 Jun 2004 20:46:17 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id LAA24612 for linac-eng-list; Thu, 03 Jun 2004 11:46:34 -0500 (CDT) Received: from tmh.tmc.edu (mailgw1.tmh.tmc.edu [128.249.194.151]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id LAA24607 for ; Thu, 03 Jun 2004 11:46:32 -0500 (CDT) Received: from ([10.120.62.235]) by mailgw1.tmh.tmc.edu with ESMTP ; Thu, 03 Jun 2004 11:45:43 -0500 Received: by exch5.tmh.tmc.edu with Internet Mail Service (5.5.2657.72) id ; Thu, 03 Jun 2004 11:45:43 -0500 Date: Thu, 03 Jun 2004 11:45:42 -0500 From: "Segovia, Luis E." Subject: UDN2943Z Sender: owner-linac-eng@plato.aristotle.net To: 'Linac List' Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: MULTIPART/MIXED; BOUNDARY="Boundary_(ID_J6I7CMZjztkYBZxI9nJutA)" Precedence: bulk X-MS-TNEF-Correlator: X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 03 Jun 2004 11:45:42 -0500 From: "Segovia, Luis E." Subject: UDN2943Z Sender: owner-linac-eng@plato.aristotle.net To: 'Linac List' X-MS-TNEF-Correlator: X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_J6I7CMZjztkYBZxI9nJutA) Content-type: text/plain; charset=iso-8859-1 Hello list, Equipment: Siemens Primus, Mevatrons Assembly: Target Drive Would anyone in the US know a sourse for the OP amp motor driver used in the target drive assembly? It is made by Allegro microsystems UDN2943Z Thank you Luis Segovia ----------------------------------------- ____________________________________________________________________________________ ****CONFIDENTIALITY NOTICE**** This e-mail is the property of The Methodist Hospital and/or its relevant affiliates and may contain confidential and privileged material for the sole use of the intended recipient(s). Any review, use, distribution or disclosure by others is strictly prohibited. If you are not the intended recipient(or authorized to receive for the recipient), please contact the sender and delete all copies of the message. Thank you. --Boundary_(ID_J6I7CMZjztkYBZxI9nJutA) Content-type: application/ms-tnef Content-transfer-encoding: base64 eJ8+IiwQAQaQCAAEAAAAAAABAAEAAQeQBgAIAAAA5AQAAAAAAADoAAEIgAcAGAAAAElQTS5NaWNy b3NvZnQgTWFpbC5Ob3RlADEIAQWAAwAOAAAA1AcGAAMACwAtACoABABKAQEggAMADgAAANQHBgAD AAsALQAqAAQASgEBCYABACEAAAA0QUJERUU4QzNCRTVDNjQ5QUE2NzhGMEQwN0FDRDA0MgB7BwEE gAEACQAAAFVETjI5NDNaABMCAQ2ABAACAAAAAgACAAEDkAYAPAYAAC0AAAADAAGACCAGAAAAAADA AAAAAAAARgAAAABShQAAc3kBAB4AAoAIIAYAAAAAAMAAAAAAAABGAAAAAFSFAAABAAAABAAAADku MAALAAOACCAGAAAAAADAAAAAAAAARgAAAAAGhQAAAAAAAAMABIAIIAYAAAAAAMAAAAAAAABGAAAA AAGFAAAAAAAACwAGgAggBgAAAAAAwAAAAAAAAEYAAAAAA4UAAAAAAAALAAeACCAGAAAAAADAAAAA AAAARgAAAAAOhQAAAAAAAAMACIAIIAYAAAAAAMAAAAAAAABGAAAAABCFAAAAAAAAAwAKgAggBgAA AAAAwAAAAAAAAEYAAAAAEYUAAAAAAAADAAmACCAGAAAAAADAAAAAAAAARgAAAAAYhQAAAAAAAAIB CRABAAAAUwEAAE8BAAC4AQAATFpGdUH0GlEDAAoAcmNwZzEyNRYyAPgLYG4OEDAzM08B9wKkA+MC AGNoCsBzsGV0MCAHEwKAfQqBknYIkHdrC4BkNAxgDmMAUAsDC7UgSGVsyQkAIGwEAHQsCqIKhHEK gEVxdQUgB4ACMDpeIAYACJAVkQQgUAUQbQh1cywF0GV2YXR3A2AAgBSKQQQQFiACYHlSOgyCIFQK wGcRMCBSRAUQdmUUilcIYGyUZCAAcHkCIGUgC4AoIHRoG2BVBfBrbmJvB+BhIHMIYREgICcCEAXA G7JPUBsAbXDqIARgdAWxZBmyBcAWwH8JgBt2AZAZUx5TGwAYZT9dFIpJBUAEAB3gYQEAIGxieRFg E/BlCcAUEG1zDeADYHN5FFAWIBeLVYBETjI5NDNaFIriVBDwbmsgGzAMcBSZpkwVYAZCZ28SIGEU hAUR4QAocAAeAHAAAQAAAAkAAABVRE4yOTQzWgAAAAACAXEAAQAAABYAAAABxEmKNS+n0bHtzx5B uJ6dpci1dOXKAAALAAIAAQAAAAMACVkDAAAAAwDeP69vAABAADkAYM2KNYpJxAEDAPE/CQQAAB4A MUABAAAACQAAAExTRUdPVklBAAAAAAMAGkAAAAAAHgAwQAEAAAAJAAAATFNFR09WSUEAAAAAAwAZ QAAAAAADAP0/5AQAAAMAJgAAAAAAAwA2AAAAAAADAIAQ/////wIBRwABAAAALQAAAGM9VVM7YT0g O3A9TUhDUztsPUVYQ0gyLTA0MDYwMzE2NDU0MlotMzYxMDUwAAAAAAIB+T8BAAAAUgAAAAAAAADc p0DIwEIQGrS5CAArL+GCAQAAAAAAAAAvTz1UTUhDUy9PVT1UTUgvQ049UkVDSVBJRU5UUy9DTj1Q Uk9GU1ZDUy9DTj1MU0VHT1ZJQQAAAB4A+D8BAAAAEQAAAFNlZ292aWEsIEx1aXMgRS4AAAAAHgA4 QAEAAAAJAAAATFNFR09WSUEAAAAAAgH7PwEAAABSAAAAAAAAANynQMjAQhAatLkIACsv4YIBAAAA AAAAAC9PPVRNSENTL09VPVRNSC9DTj1SRUNJUElFTlRTL0NOPVBST0ZTVkNTL0NOPUxTRUdPVklB AAAAHgD6PwEAAAARAAAAU2Vnb3ZpYSwgTHVpcyBFLgAAAAAeADlAAQAAAAkAAABMU0VHT1ZJQQAA AABAAAcwlml+wIlJxAFAAAgwwIacNYpJxAEeAD0AAQAAAAEAAAAAAAAAHgAdDgEAAAAJAAAAVURO Mjk0M1oAAAAAHgA1EAEAAAA9AAAAPEJBQkNFQUM4REI5RDA0NEE5RDM2MjlCOUIxMzhDQzc0MEQ1 Q0FGREZAZXhjaDIudG1oLnRtYy5lZHU+AAAAAAsAKQAAAAAACwAjAAAAAAADAAYQ1JujYwMABxDH AAAAAwAQEAAAAAADABEQAAAAAB4ACBABAAAAZQAAAEhFTExPTElTVCxFUVVJUE1FTlQ6U0lFTUVO U1BSSU1VUyxNRVZBVFJPTlNBU1NFTUJMWTpUQVJHRVREUklWRVdPVUxEQU5ZT05FSU5USEVVU0tO T1dBU09VUlNFRk9SVEhFT1AAAAAAAgF/AAEAAAA9AAAAPEJBQkNFQUM4REI5RDA0NEE5RDM2MjlC OUIxMzhDQzc0MEQ1Q0FGREZAZXhjaDIudG1oLnRtYy5lZHU+AAAAAMY4 --Boundary_(ID_J6I7CMZjztkYBZxI9nJutA)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HYR0097N1C68I@hubbard.azu.nl>; Thu, 3 Jun 2004 22:09:54 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004060322095021478 ; Thu, 03 Jun 2004 22:09:50 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id WAA21769; Thu, 03 Jun 2004 22:10:18 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma021705; Thu, 03 Jun 2004 22:10:07 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id NAA26091 for linac-eng-list; Thu, 03 Jun 2004 13:26:13 -0500 (CDT) Received: from mchsexch3.mosescone.com (mail.mosescone.com [170.53.75.10]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id NAA26087 for ; Thu, 03 Jun 2004 13:26:11 -0500 (CDT) Received: from mchsexch3.hs1.mchs.ad [170.53.75.10] by mchsexch3.mosescone.com [170.53.75.10] (CMSPraetor 5.10.4411) with ESMTP id 8CEEE89D51114917842AA1948C159E50 for ; Thu, 03 Jun 2004 14:22:44 -0400 Received: by mchsexch2.mosescone.com with Internet Mail Service (5.5.2656.59) id ; Thu, 03 Jun 2004 14:22:44 -0400 Date: Thu, 03 Jun 2004 14:22:41 -0400 From: "Spencer, Kelly" Subject: Clinac 6100 STD Sender: owner-linac-eng@plato.aristotle.net To: "'linac-eng@plato.aristotle.net'" Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2656.59) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 03 Jun 2004 14:22:41 -0400 From: "Spencer, Kelly" Subject: Clinac 6100 STD Sender: owner-linac-eng@plato.aristotle.net To: "'linac-eng@plato.aristotle.net'" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hello Folks, Sorry to bother everyone with a mundane question, but I have a need to know what the source to tray distance is for a Varian Clinac 6100 for block cutting purposes. I am unable to find the distance in the operator's or maintenance manuals. Using crude measuring tools (tape measure from isocenter), I calculate 60.7 cm. Can anyone confirm this? Thanks for your help. Kelly Kelly M. Spencer, MS DABMP Medical Physicist Moses Cone Regional Cancer Center Radiation Oncology Department 501 North Elam Avenue Greensboro, NC 27403 (336) 832-0631 kelly.spencer@mosescone.com  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HYR0098E1EB8I@hubbard.azu.nl>; Thu, 3 Jun 2004 22:11:00 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004060322105821491 ; Thu, 03 Jun 2004 22:10:58 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id WAA21885; Thu, 03 Jun 2004 22:11:27 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma021799; Thu, 03 Jun 2004 22:10:49 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id MAA25494 for linac-eng-list; Thu, 03 Jun 2004 12:49:25 -0500 (CDT) Received: from eprism2.cancerboard.ab.ca (cancerserver.cancerboard.ab.ca [164.102.1.2]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id MAA25489 for ; Thu, 03 Jun 2004 12:49:24 -0500 (CDT) Date: Thu, 03 Jun 2004 11:49:05 -0600 From: Massimo Giovannetti Subject: Re: UDN2943Z Sender: owner-linac-eng@plato.aristotle.net To: "Segovia, Luis E." Cc: 'Linac List' Message-id: <40BF6491.6040602@cancerboard.ab.ca> MIME-version: 1.0 Content-type: text/plain; format=flowed; charset=us-ascii Content-transfer-encoding: 7bit Precedence: bulk User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.0.1) Gecko/20020823 Netscape/7.0 (CK-ACBNet) X-Accept-Language: en-us, en References: X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 03 Jun 2004 11:49:05 -0600 From: Massimo Giovannetti Subject: Re: UDN2943Z Sender: owner-linac-eng@plato.aristotle.net To: "Segovia, Luis E." Cc: 'Linac List' X-Accept-Language: en-us, en X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hi Luis, I know you are looking for US vendors but keep this information handy. The part you are looking for is discontinued so you will have to seek companies that deal with hard to find IC's. The company we use is AMS Alltronics located in Ontario. Their website is www.hard-to-find.net. Presently they have 84 in stock according to the site. You will have to call them and they'll fax you a quote with minimum order and delivery time. Good luck! Massimo Giovannetti Tom Baker Cancer Centre Calgary, Alberta, Canada Segovia, Luis E. wrote: > Hello list, > > Equipment: Siemens Primus, Mevatrons > > Assembly: Target Drive > > Would anyone in the US know a sourse for the OP amp motor driver used in the > target drive assembly? > > It is made by Allegro microsystems > > UDN2943Z > > Thank you > > Luis Segovia > > > > ----------------------------------------- > ____________________________________________________________________________________ > ****CONFIDENTIALITY NOTICE**** > This e-mail is the property of The Methodist Hospital and/or its relevant affiliates and may contain confidential and privileged material for the sole use of the intended recipient(s). Any review, use, distribution or disclosure by others is strictly prohibited. If you are not the intended recipient(or authorized to receive for the recipient), please contact the sender and delete all copies of the message. Thank you. This e-mail and any attachments may contain confidential and privileged information. If you are not the intended recipient, please notify the sender immediately by return e-mail, delete this e-mail and destroy any copies. Any dissemination or use of this information by a person other than the intended recipient is unauthorized and may be illegal.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HYR009IF27K8I@hubbard.azu.nl>; Thu, 3 Jun 2004 22:28:34 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004060322283221810 ; Thu, 03 Jun 2004 22:28:32 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id WAA24094; Thu, 03 Jun 2004 22:28:59 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma024044; Thu, 03 Jun 2004 22:28:49 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id NAA26278 for linac-eng-list; Thu, 03 Jun 2004 13:40:09 -0500 (CDT) Received: from imo-d21.mx.aol.com (imo-d21.mx.aol.com [205.188.144.207]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id NAA26274 for ; Thu, 03 Jun 2004 13:40:08 -0500 (CDT) Received: from GARRYANGEL@aol.com by imo-d21.mx.aol.com (mail_out_v37_r2.6.) id y.8.4ebc3364 (18555) for ; Thu, 03 Jun 2004 14:39:32 -0400 (EDT) Date: Thu, 03 Jun 2004 14:39:31 -0400 (EDT) From: GARRYANGEL@aol.com Subject: USED KLYSTRON Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <8.4ebc3364.2df0ca63@aol.com> MIME-version: 1.0 X-Mailer: 9.0 for Windows sub 5110 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_znSCuY+Jky7sXLBeCcLLUw)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 03 Jun 2004 14:39:31 -0400 (EDT) From: GARRYANGEL@aol.com Subject: USED KLYSTRON Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f --Boundary_(ID_znSCuY+Jky7sXLBeCcLLUw) Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7bit Hello Everyone: I am looking for a good "late model" used Varian Klystron. If anyone can help please email specifics on the tube. Please send mfr. date, ser #, equipment used in, and of course, cost. Thanks in advance. Garry --Boundary_(ID_znSCuY+Jky7sXLBeCcLLUw) Content-type: text/html; charset=US-ASCII Content-transfer-encoding: quoted-printable
Hello Everyone:
 
I am looking for a good "late model" used Varian Klystron. If anyo= ne can help please email specifics on the tube. Please send mfr. date, ser #= , equipment used in, and of course, cost.
 
Thanks in advance.
 
Garry
--Boundary_(ID_znSCuY+Jky7sXLBeCcLLUw)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HYR00E514TMTN@hubbard.azu.nl>; Thu, 3 Jun 2004 23:25:00 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004060323245822662 ; Thu, 03 Jun 2004 23:24:58 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id XAA00026; Thu, 03 Jun 2004 23:25:26 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma029972; Thu, 03 Jun 2004 23:24:57 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id OAA28691 for linac-eng-list; Thu, 03 Jun 2004 14:36:20 -0500 (CDT) Received: from exch-front.carti.com (mail1.carti.com [65.66.64.155]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id OAA28686 for ; Thu, 03 Jun 2004 14:36:18 -0500 (CDT) Received: from exch-bkend.carti.com ([132.101.22.30]) by exch-front.carti.com with Microsoft SMTPSVC(5.0.2195.6713); Thu, 03 Jun 2004 14:40:54 -0500 Date: Thu, 03 Jun 2004 14:35:37 -0500 From: Shoan Edwards Subject: in room patient monitoring Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_xYMIr7iHTsdpA+w+YXmnmg)" Precedence: bulk X-MimeOLE: Produced By Microsoft Exchange V6.0.6487.1 Content-Class: urn:content-classes:message Thread-Topic: in room patient monitoring thread-index: AcRJoenrsXj63tweQRGLpGhLg7h0ug== X-OriginalArrivalTime: 03 Jun 2004 19:40:55.0218 (UTC) FILETIME=[AF8FC120:01C449A2] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 03 Jun 2004 14:35:37 -0500 From: Shoan Edwards Subject: in room patient monitoring Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-MimeOLE: Produced By Microsoft Exchange V6.0.6487.1 Content-Class: urn:content-classes:message Thread-Topic: in room patient monitoring thread-index: AcRJoenrsXj63tweQRGLpGhLg7h0ug== X-OriginalArrivalTime: 03 Jun 2004 19:40:55.0218 (UTC) FILETIME=[AF8FC120:01C449A2] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This is a multi-part message in MIME format. --Boundary_(ID_xYMIr7iHTsdpA+w+YXmnmg) Content-type: text/plain; charset=us-ascii Content-transfer-encoding: quoted-printable Hello =20 Just looking for advice for a good replacement camera for our in room patient monitoring. We are currently using a Panasonic camera not sure the model off hand but it looks like R2-D2 stuck to the ceiling upside down. We need the typical pan tilt zoom and iris controls any suggestions would be great thanks =20 Shoan Edwards --Boundary_(ID_xYMIr7iHTsdpA+w+YXmnmg) Content-type: text/html; charset=us-ascii Content-transfer-encoding: quoted-printable

Hello

 

Just looking for advice for a good replacement camera = for our in room patient monitoring.  We are currently using a Panasonic = camera not sure the model off hand but it looks like R2-D2 stuck to the ceiling = upside down.  We need the typical pan tilt zoom and iris controls any = suggestions would be great thanks

 

Shoan Edwards

--Boundary_(ID_xYMIr7iHTsdpA+w+YXmnmg)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HYR003N4D4S51@hubbard.azu.nl>; Fri, 4 Jun 2004 02:24:30 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004060402242825263 ; Fri, 04 Jun 2004 02:24:28 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id CAA17938; Fri, 04 Jun 2004 02:24:56 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma017917; Fri, 04 Jun 2004 02:24:40 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id RAA04433 for linac-eng-list; Thu, 03 Jun 2004 17:25:15 -0500 (CDT) Received: from smtp.263.net (smtp.x263.net [211.150.96.25]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id RAA04429 for ; Thu, 03 Jun 2004 17:25:12 -0500 (CDT) Received: from cancer (mta5 [127.0.0.1]) by smtp.263.net (Postfix) with ESMTP id 3D2412F853 for ; Fri, 04 Jun 2004 06:25:08 +0800 (CST) Received: from cancer (unknown [211.167.200.117]) by antispam-4 (Coremail:263(040326)) with SMTP id CbHMA0Slv0DBGMh1.1 for ; Fri, 04 Jun 2004 06:25:08 +0800 (CST) Date: Fri, 04 Jun 2004 06:25:07 +0800 From: "James.Song" Subject: Elekta Database Problem? Sender: owner-linac-eng@plato.aristotle.net To: =?utf-8?B?5Yqg6YCf5Zmo6K6o6K6657uE?= Message-id: <003901c449b9$9ffe7f50$1511060a@cancer> MIME-version: 1.0 X-Mailer: Microsoft Outlook Express 6.00.2800.1106 Content-type: text/plain; charset=utf-8 Content-transfer-encoding: 8bit Precedence: bulk X-TEBIE-Originating-IP: [211.167.200.117] X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id RAA04430 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 *** EOOH *** Date: Fri, 04 Jun 2004 06:25:07 +0800 From: "James.Song" Subject: Elekta Database Problem? Sender: owner-linac-eng@plato.aristotle.net To: =?utf-8?B?5Yqg6YCf5Zmo6K6o6K6657uE?= X-TEBIE-Originating-IP: [211.167.200.117] X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id RAA04430 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 Hi Group: last night, we can't use Preminum therapy in Elekta Precise. The System note: The following process has terminated:'ILR Server' Applets will be terminated and the system will be shutdown. We has about 90 patients in the database.(RTD 4.1.0), I delete some old patients. The system is ok. but 3 hours later,same problem is coming. Any one Know how to do? Thanks in advance James.Song Engineer&MCSE Radiological Physicist Dept. of Radiation Oncology, C.A.M.S Cancer(Institute) Hospital Chinese Academy of Medical Science Office: 86-10-67781331ext8292 E-mail: jamessong@263.net  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HYR00DXKKZL8E@hubbard.azu.nl>; Fri, 4 Jun 2004 05:14:10 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004060405140827025 ; Fri, 04 Jun 2004 05:14:08 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id FAA01134; Fri, 04 Jun 2004 05:14:36 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma001111; Fri, 04 Jun 2004 05:14:33 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id UAA06297 for linac-eng-list; Thu, 03 Jun 2004 20:23:03 -0500 (CDT) Received: from lhsc.on.ca (ironmail.lhsc.on.ca [142.158.10.115]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id UAA06293 for ; Thu, 03 Jun 2004 20:23:01 -0500 (CDT) Received: from ([142.158.2.40]) by ironmail.lhsc.on.ca with ESMTP ; Thu, 03 Jun 2004 21:21:37 -0400 Received: from mail.lrcc.on.ca (mail.lrcc.on.ca [142.158.120.242]) by mailhub.lhsc.on.ca (8.12.10+Sun/8.12.10) with SMTP id i541LbMD020743; Thu, 03 Jun 2004 21:21:37 -0400 (EDT) Received: by mail.lrcc.on.ca(Lotus SMTP MTA v4.6.7 (934.1 12-30-1999)) id 85256EA9.00077CB2 ; Thu, 03 Jun 2004 21:21:46 -0400 Date: Thu, 03 Jun 2004 21:21:45 -0400 From: Randy.McVittie@lrcc.on.ca Subject: Re: in room patient monitoring Sender: owner-linac-eng@plato.aristotle.net To: Shoan Edwards Cc: linac-eng@plato.aristotle.net Message-id: <85256EA9.00077C5D.00@mail.lrcc.on.ca> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Content-disposition: inline Precedence: bulk X-Lotus-FromDomain: LRCC X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 03 Jun 2004 21:21:45 -0400 From: Randy.McVittie@lrcc.on.ca Subject: Re: in room patient monitoring Sender: owner-linac-eng@plato.aristotle.net To: Shoan Edwards Cc: linac-eng@plato.aristotle.net Content-disposition: inline X-Lotus-FromDomain: LRCC X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f The Panasonic WV-CU161C controller and the the Panasonic WV-CS564 pan/tilt/zoom camera is a pretty good combination. The controller can talk to the camera over the video cable or you can run separate RS485 control lines to the camera. I think that 1 fixed camera and 1 pan/tilt/zoom is a good combination, costs a bit more than 2 fixed cameras but it saves time in the future when there is a patient that has to be monitored more closely and you have to scramble to find a camera, lens and cables to make it all work. Randy  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HYR00HQFZP6JQ@hubbard.azu.nl>; Fri, 4 Jun 2004 10:31:56 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004060410315300579 ; Fri, 04 Jun 2004 10:31:53 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id KAA07257; Fri, 04 Jun 2004 10:32:22 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xmaa07151; Fri, 04 Jun 2004 10:31:57 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id BAA09337 for linac-eng-list; Fri, 04 Jun 2004 01:46:18 -0500 (CDT) Received: from smtp1.BelWue.DE (smtp1.BelWue.de [129.143.2.12]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id BAA09333 for ; Fri, 04 Jun 2004 01:46:15 -0500 (CDT) Received: from proxy.vinzenz.de (rechner1.marienhospital.s.BelWue.DE [129.143.100.162]) by smtp1.BelWue.DE with ESMTP id i546kDMg014747 for ; Fri, 04 Jun 2004 08:46:14 +0200 (MEST thomasreinbeck@vinzenz.de) Received: from localhost (localhost [127.0.0.1]) by proxy.vinzenz.de (Postfix) with ESMTP id BB4A5154EB for ; Fri, 04 Jun 2004 09:07:32 +0200 (CEST) Received: from limes.vinzenz.de (unknown [10.10.99.2]) by proxy.vinzenz.de (Postfix) with SMTP id C96A1187A for ; Fri, 04 Jun 2004 09:07:28 +0200 (CEST) Received: from D_Marienhospital-Message_Server by limes.vinzenz.de with Novell_GroupWise; Fri, 04 Jun 2004 08:46:09 +0200 Date: Fri, 04 Jun 2004 08:45:53 +0200 From: Thomas Reinbeck Subject: Antw: UDN2943Z Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net, LSegovia@tmh.tmc.edu Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise 5.5.2 Content-type: text/plain; charset=US-ASCII Content-disposition: inline Content-transfer-encoding: 8bit Precedence: bulk Virus-Scanned: by Marienhospital-Stuttgart X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id BAA09334 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 04 Jun 2004 08:45:53 +0200 From: Thomas Reinbeck Subject: Antw: UDN2943Z Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net, LSegovia@tmh.tmc.edu Content-disposition: inline Virus-Scanned: by Marienhospital-Stuttgart X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id BAA09334 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Luis, try this (thanks to google) http://www.usbid.com/catalog1/page.cfm/294/1 or http://www.freetradezone.com/index.html Hope this helps From Germany Thomas >>> "Segovia, Luis E." 03.06.2004 18.45 Uhr >>> Hello list, Equipment: Siemens Primus, Mevatrons Assembly: Target Drive Would anyone in the US know a sourse for the OP amp motor driver used in the target drive assembly? It is made by Allegro microsystems UDN2943Z Thank you Luis Segovia ----------------------------------------- ____________________________________________________________________________________ ****CONFIDENTIALITY NOTICE**** This e-mail is the property of The Methodist Hospital and/or its relevant affiliates and may contain confidential and privileged material for the sole use of the intended recipient(s). Any review, use, distribution or disclosure by others is strictly prohibited. If you are not the intended recipient(or authorized to receive for the recipient), please contact the sender and delete all copies of the message. Thank you.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HYS00BI9LBC2C@hubbard.azu.nl>; Fri, 4 Jun 2004 18:18:55 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004060418184914302 ; Fri, 04 Jun 2004 18:18:49 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA25827; Fri, 04 Jun 2004 18:19:18 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma025796; Fri, 04 Jun 2004 18:18:53 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id JAA14438 for linac-eng-list; Fri, 04 Jun 2004 09:14:04 -0500 (CDT) Received: from nasvir01.nas.medcity.net (mail.nas.medcity.net [199.91.33.30]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id JAA14434 for ; Fri, 04 Jun 2004 09:14:02 -0500 (CDT) Received: from 165.214.16.65 by nasvir01.nas.medcity.net (InterScan E-Mail VirusWall NT); Fri, 04 Jun 2004 09:13:06 -0500 Received: by smtp-gw2.nas.medcity.net with Internet Mail Service (5.5.2657.72) id ; Fri, 04 Jun 2004 09:13:28 -0500 Date: Fri, 04 Jun 2004 09:13:27 -0500 From: Tirabassi Michael Subject: RE: in room patient monitoring Sender: owner-linac-eng@plato.aristotle.net To: "Linac list (E-mail)" Message-id: <39A90AC123CB9D428821E2BC273E73CD01F866DB@ftwex03.hca.corpad.net> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 04 Jun 2004 09:13:27 -0500 From: Tirabassi Michael Subject: RE: in room patient monitoring Sender: owner-linac-eng@plato.aristotle.net To: "Linac list (E-mail)" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Good morning! Speaking of cameras. Is there any requirement as to the number of cameras needed to monitor the patient. Obviously you need at least one but is that the minimum. Is there any spec that says you should have a certain #. Mike T. Rapides Cancer Center -----Original Message----- From: Randy.McVittie@lrcc.on.ca [mailto:Randy.McVittie@lrcc.on.ca] Sent: Thursday, June 03, 2004 8:22 PM To: Shoan Edwards Cc: linac-eng@plato.aristotle.net Subject: Re: in room patient monitoring The Panasonic WV-CU161C controller and the the Panasonic WV-CS564 pan/tilt/zoom camera is a pretty good combination. The controller can talk to the camera over the video cable or you can run separate RS485 control lines to the camera. I think that 1 fixed camera and 1 pan/tilt/zoom is a good combination, costs a bit more than 2 fixed cameras but it saves time in the future when there is a patient that has to be monitored more closely and you have to scramble to find a camera, lens and cables to make it all work. Randy  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HYS00BRBM9D2C@hubbard.azu.nl>; Fri, 4 Jun 2004 18:39:15 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004060418391214604 ; Fri, 04 Jun 2004 18:39:12 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA27950; Fri, 04 Jun 2004 18:39:41 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma027948; Fri, 04 Jun 2004 18:39:37 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id JAA15281 for linac-eng-list; Fri, 04 Jun 2004 09:40:39 -0500 (CDT) Received: from dangerfield.cancercare.mb.ca ([192.139.125.101]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id JAA15277 for ; Fri, 04 Jun 2004 09:40:37 -0500 (CDT) Received: (from uucp@localhost) by dangerfield.cancercare.mb.ca (8.11.6+Sun/8.11.6) id i54Ee6t07915 for ; Fri, 04 Jun 2004 09:40:06 -0500 (CDT) Received: from UNKNOWN(172.18.125.27), claiming to be "Chaos.cancercare.mb.ca" via SMTP by dangerfield, id smtpdAAAqBaGlp; Fri Jun 4 14:36:10 2004 Received: from CCMD01-MTA by Chaos.cancercare.mb.ca with Novell_GroupWise; Fri, 04 Jun 2004 09:36:11 -0500 Date: Fri, 04 Jun 2004 09:35:15 -0500 From: Chris Dyke Subject: Re: in room patient monitoring Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.5.1 Content-type: text/plain; charset=US-ASCII Content-disposition: inline Content-transfer-encoding: 7bit Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 04 Jun 2004 09:35:15 -0500 From: Chris Dyke Subject: Re: in room patient monitoring Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Content-disposition: inline X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f We have the same R2D2 camera. The model number is WV-CS854B. Just wondering why you are replacing it. We've had our cameras installed for just over a year and are experiencing image degredation especially when the room lights are off. Lots of specs on the screen. It has very good pan, tilt and zoom function, so it would be a shame to go back to the fixed style cameras with a zoom lens and a separate pan and tilt assembly. thanks >>> "Shoan Edwards" 06/03/04 02:35PM >>> Hello Just looking for advice for a good replacement camera for our in room patient monitoring. We are currently using a Panasonic camera not sure the model off hand but it looks like R2-D2 stuck to the ceiling upside down. We need the typical pan tilt zoom and iris controls any suggestions would be great thanks Shoan Edwards Chris Dyke Electronic Technologist Dept of Nuclear Electronics CancerCare Manitoba (204)787-2192 (204)775-1684 Fax  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HYS00BQXMFX3M@hubbard.azu.nl>; Fri, 4 Jun 2004 18:43:18 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004060418431314660 ; Fri, 04 Jun 2004 18:43:13 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA28348; Fri, 04 Jun 2004 18:43:41 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma028313; Fri, 04 Jun 2004 18:43:17 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id KAA15925 for linac-eng-list; Fri, 04 Jun 2004 10:03:44 -0500 (CDT) Received: from pop.sca.hin.sk.ca (shin.communitynet.ca [216.174.136.2]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id KAA15921 for ; Fri, 04 Jun 2004 10:03:42 -0500 (CDT) Received: from smtp.scf.sk.ca (unverified [172.24.48.3]) by scf.sk.ca (Rockliffe SMTPRA 6.0.11) with SMTP id ; Fri, 04 Jun 2004 09:03:43 -0600 Received: from [172.24.49.35] ([172.24.49.35]) by smtp.scf.sk.ca (SAVSMTP 3.1.1.32) with SMTP id M2004060409034123204 ; Fri, 04 Jun 2004 09:03:41 -0600 Date: Fri, 04 Jun 2004 09:01:56 -0600 From: scot thiesson Subject: Re: in room patient monitoring In-reply-to: <39A90AC123CB9D428821E2BC273E73CD01F866DB@ftwex03.hca.corpad.net> Sender: owner-linac-eng@plato.aristotle.net To: Tirabassi Michael Cc: "Linac list (E-mail)" Message-id: <40C08EE4.6030005@scf.sk.ca> MIME-version: 1.0 Content-type: text/plain; format=flowed; charset=us-ascii Content-transfer-encoding: 7bit Precedence: bulk User-Agent: Mozilla Thunderbird 0.6 (Windows/20040502) X-Accept-Language: en-us, en References: <39A90AC123CB9D428821E2BC273E73CD01F866DB@ftwex03.hca.corpad.net> X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 04 Jun 2004 09:01:56 -0600 From: scot thiesson Subject: Re: in room patient monitoring In-reply-to: <39A90AC123CB9D428821E2BC273E73CD01F866DB@ftwex03.hca.corpad.net> Sender: owner-linac-eng@plato.aristotle.net To: Tirabassi Michael Cc: "Linac list (E-mail)" X-Accept-Language: en-us, en X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Tirabassi Michael wrote: >Good morning! > >Speaking of cameras. Is there any requirement as to the number of cameras >needed to monitor the patient. Obviously you need at least one but is that >the minimum. Is there any spec that says you should have a certain #. > > >Mike T. >Rapides Cancer Center > >-----Original Message----- >From: Randy.McVittie@lrcc.on.ca [mailto:Randy.McVittie@lrcc.on.ca] >Sent: Thursday, June 03, 2004 8:22 PM >To: Shoan Edwards >Cc: linac-eng@plato.aristotle.net >Subject: Re: in room patient monitoring > > > > >The Panasonic WV-CU161C controller and the the Panasonic WV-CS564 >pan/tilt/zoom >camera is a pretty good combination. >The controller can talk to the camera over the video cable or you can run >separate RS485 control lines to the camera. > >I think that 1 fixed camera and 1 pan/tilt/zoom is a good combination, costs >a >bit more than 2 fixed cameras but it saves time in the future >when there is a patient that has to be monitored more closely and you have >to >scramble to find a camera, lens and cables to make it all work. > >Randy > > > > Probably not but I have found over the years that one on each side of the bed capable of being tilted and zoomed to most machine structures is a great help when trouble shooting! Scot Thiesson ABCC Regina  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HYS00HSBQWX13@hubbard.azu.nl>; Fri, 4 Jun 2004 20:19:46 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004060420194416035 ; Fri, 04 Jun 2004 20:19:44 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id UAA08301; Fri, 04 Jun 2004 20:20:13 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xmad08291; Fri, 04 Jun 2004 20:20:02 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id LAA17611 for linac-eng-list; Fri, 04 Jun 2004 11:35:21 -0500 (CDT) Received: from [158.93.6.10] (mcg-stjames02.mcg.edu [158.93.6.10]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id LAA17607 for ; Fri, 04 Jun 2004 11:35:19 -0500 (CDT) Received: from navgate2.mcg.edu by [158.93.6.10] via smtpd (for plato.aristotle.net [206.66.224.2]) with ESMTP; Fri, 04 Jun 2004 12:30:49 -0400 Received: from mail.mcg.edu ([158.93.1.5]) by navgate2.mcg.edu (SAVSMTP 3.1.6.45) with SMTP id M2004060412342031427 for ; Fri, 04 Jun 2004 12:34:20 -0400 Received: from THEHUB-MTA by mail.mcg.edu with Novell_GroupWise; Fri, 04 Jun 2004 12:35:18 -0400 Date: Fri, 04 Jun 2004 12:34:44 -0400 From: Michael Nordin Subject: mmlc vxworks commands Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.5.2 Beta Content-type: text/plain; charset=US-ASCII Content-disposition: inline Content-transfer-encoding: 7bit Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 04 Jun 2004 12:34:44 -0400 From: Michael Nordin Subject: mmlc vxworks commands Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Content-disposition: inline X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Group, Is there a clesr screen command for vxworks? Mike Nordin  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HYS00HY9RSC9N@hubbard.azu.nl>; Fri, 4 Jun 2004 20:38:40 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004060420383516321 ; Fri, 04 Jun 2004 20:38:35 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id UAA10255; Fri, 04 Jun 2004 20:39:04 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma010250; Fri, 04 Jun 2004 20:38:51 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id LAA17924 for linac-eng-list; Fri, 04 Jun 2004 11:49:30 -0500 (CDT) Received: from mail.cbdha.nshealth.ca (mail.cbdha.nshealth.ca [142.176.129.245]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id LAA17914 for ; Fri, 04 Jun 2004 11:49:27 -0500 (CDT) Received: from ELECTECH ([128.222.7.122]) by mail.cbdha.nshealth.ca (Merak 7.4.5) with SMTP id LOA74478; Fri, 04 Jun 2004 13:49:35 -0300 Date: Fri, 04 Jun 2004 13:48:32 -0300 From: Greg MacKinnon Subject: RE: in room patient monitoring In-reply-to: Sender: owner-linac-eng@plato.aristotle.net To: 'Shoan Edwards' Cc: "LinacEng (E-mail)" Message-id: <003901c44a53$c63af4b0$7a07de80@ELECTECH> MIME-version: 1.0 X-Mailer: Microsoft Outlook CWS, Build 9.0.2416 (9.0.2910.0) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_IwLIK3CdCyy1c4Bp+e3nAA)" Importance: Normal Precedence: bulk X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 (Normal) *** EOOH *** Date: Fri, 04 Jun 2004 13:48:32 -0300 From: Greg MacKinnon Subject: RE: in room patient monitoring In-reply-to: Sender: owner-linac-eng@plato.aristotle.net To: 'Shoan Edwards' Cc: "LinacEng (E-mail)" Importance: Normal X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 (Normal) This is a multi-part message in MIME format. --Boundary_(ID_IwLIK3CdCyy1c4Bp+e3nAA) Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 7bit Hi Here at our centre we use Sony color video camera (model SSC-C104) with a Sony Trinitron monitor. The camera pan, tilt, zoom & iris is controlled by a PELCO model MPTAZ24DT. No problems with the units at all. __________________________________________ Greg MacKinnon, C.E.T. Linear Accelerator Service Technologist Cape Breton Cancer Centre 1482 George Street Sydney, Nova Scotia, Canada B1P 1P3 tel: (902) 567-8076 fax: (902) 567-8075 email: mackinnongreg@cbdha.nshealth.ca -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Shoan Edwards Sent: Thursday, June 03, 2004 4:36 PM To: linac-eng@plato.aristotle.net Subject: in room patient monitoring Hello Just looking for advice for a good replacement camera for our in room patient monitoring. We are currently using a Panasonic camera not sure the model off hand but it looks like R2-D2 stuck to the ceiling upside down. We need the typical pan tilt zoom and iris controls any suggestions would be great thanks Shoan Edwards --Boundary_(ID_IwLIK3CdCyy1c4Bp+e3nAA) Content-type: text/html; charset=us-ascii Content-transfer-encoding: quoted-printable
Hi
 
Here=20 at our centre we use Sony color video camera (model SSC-C104) with = a Sony=20 Trinitron monitor. The camera pan, tilt, zoom & iris is controlled = by a=20 PELCO model MPTAZ24DT. No problems with the units at = all.
 
 
__________________________________________
Greg MacKinnon,=20 C.E.T.
Linear Accelerator Service Technologist
Cape Breton Cancer=20 Centre
1482 George Street
Sydney, Nova Scotia, Canada
B1P = 1P3
tel:=20 (902) 567-8076
fax: (902) 567-8075
email:=20 mackinnongreg@cbdha.nshealth.ca
-----Original Message-----
From:=20 owner-linac-eng@plato.aristotle.net=20 [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Shoan=20 Edwards
Sent: Thursday, June 03, 2004 4:36 PM
To:=20 linac-eng@plato.aristotle.net
Subject: in room patient=20 monitoring

Hello

 

Just looking for advice = for a good=20 replacement camera for our in room patient monitoring.  We are = currently=20 using a Panasonic camera not sure the model off hand but it looks like = R2-D2=20 stuck to the ceiling upside down.  We need the typical pan tilt = zoom and=20 iris controls any suggestions would be great thanks

 

Shoan=20 Edwards

--Boundary_(ID_IwLIK3CdCyy1c4Bp+e3nAA)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HYY00EFM3XZJO@hubbard.azu.nl>; Mon, 7 Jun 2004 17:49:21 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004060717492016314 ; Mon, 07 Jun 2004 17:49:20 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id RAA22357; Mon, 07 Jun 2004 17:49:50 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma022276; Mon, 07 Jun 2004 17:49:36 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id IAA00327 for linac-eng-list; Mon, 07 Jun 2004 08:54:18 -0500 (CDT) Received: from PHSEXCHICO2.Partners.org (phsexchico2.partners.org [170.223.254.20]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id IAA00323 for ; Mon, 07 Jun 2004 08:54:16 -0500 (CDT) Received: by phsexchico2.partners.org with Internet Mail Service (5.5.2657.72) id ; Mon, 07 Jun 2004 09:52:30 -0400 Date: Mon, 07 Jun 2004 09:52:28 -0400 From: "Maddox, Buford J" Subject: RE: in room patient monitoring Sender: owner-linac-eng@plato.aristotle.net To: 'Tirabassi Michael' , "Linac list (E-mail)" Message-id: <36298D09ED1AD311B4DC0008C7F4D4E11146648A@phsexch6.partners.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 07 Jun 2004 09:52:28 -0400 From: "Maddox, Buford J" Subject: RE: in room patient monitoring Sender: owner-linac-eng@plato.aristotle.net To: 'Tirabassi Michael' , "Linac list (E-mail)" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f You always need to be able to see the patient. One camera on center may not be able to see the patients' face, so we use two cameras at about 15 deg angles. One may be obscured by the gantry, but then the other can see. Not sure if there is a code that requires two, but this requirement is always there from the nurses and anesthesiologists. In some rooms medical staff have required these two plus one on center, for anesthesized pediatric cases. All our cameras are motorized per their requirements to be able to zoom in on the face or breathing. Besides the need to observe the patient, prevention of collisions is becoming a strong reason for excellent viewing, due to increased use of procedures and software where is allowed to move without a person in the room. Our Quality Assurance committee is reviewing the conditions under which this is allowed, and I would be interested in any rules, regulations, and training at your site regarding remotely controlled movement. Jerry -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Tirabassi Michael Sent: Friday, June 04, 2004 10:13 AM To: Linac list (E-mail) Subject: RE: in room patient monitoring Good morning! Speaking of cameras. Is there any requirement as to the number of cameras needed to monitor the patient. Obviously you need at least one but is that the minimum. Is there any spec that says you should have a certain #. Mike T. Rapides Cancer Center -----Original Message----- From: Randy.McVittie@lrcc.on.ca [mailto:Randy.McVittie@lrcc.on.ca] Sent: Thursday, June 03, 2004 8:22 PM To: Shoan Edwards Cc: linac-eng@plato.aristotle.net Subject: Re: in room patient monitoring The Panasonic WV-CU161C controller and the the Panasonic WV-CS564 pan/tilt/zoom camera is a pretty good combination. The controller can talk to the camera over the video cable or you can run separate RS485 control lines to the camera. I think that 1 fixed camera and 1 pan/tilt/zoom is a good combination, costs a bit more than 2 fixed cameras but it saves time in the future when there is a patient that has to be monitored more closely and you have to scramble to find a camera, lens and cables to make it all work. Randy  1,, X-Coding-System: iso-latin-1-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HYY0006F76369@hubbard.azu.nl>; Mon, 7 Jun 2004 18:58:54 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004060718584918035 ; Mon, 07 Jun 2004 18:58:49 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA03285; Mon, 07 Jun 2004 18:59:21 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma003251; Mon, 07 Jun 2004 18:59:13 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id JAA03546 for linac-eng-list; Mon, 07 Jun 2004 09:54:52 -0500 (CDT) Received: from smtp.263.net (263.net.cn [211.150.96.22]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id JAA03540 for ; Mon, 07 Jun 2004 09:54:49 -0500 (CDT) Received: from cancer (localhost [127.0.0.1]) by smtp.263.net (Postfix) with ESMTP id 76EAA33F6B; Mon, 07 Jun 2004 22:54:43 +0800 (CST) Received: from cancer (unknown [211.167.200.117]) by antispam-2 (Coremail:263(040326)) with SMTP id hvDKAbOBxEAEFMh1.1 for ; Mon, 07 Jun 2004 22:54:43 +0800 (CST) Date: Mon, 07 Jun 2004 22:54:42 +0800 From: "James.Song" Subject: Re: Clinac 6100 STD Sender: owner-linac-eng@plato.aristotle.net To: "Spencer, Kelly" Cc: =?utf-8?B?5Yqg6YCf5Zmo6K6o6K6657uE?= Message-id: <001a01c44c9f$5da015e0$1511060a@cancer> MIME-version: 1.0 X-Mailer: Microsoft Outlook Express 6.00.2800.1106 Content-type: MULTIPART/MIXED; BOUNDARY="Boundary_(ID_lz+Ss2XW6gjJpVjrfST4/w)" Precedence: bulk X-TEBIE-Originating-IP: [211.167.200.117] X-MSMail-Priority: Normal x-mimeole: Produced By Microsoft MimeOLE V6.00.2800.1106 References: X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 *** EOOH *** Date: Mon, 07 Jun 2004 22:54:42 +0800 From: "James.Song" Subject: Re: Clinac 6100 STD Sender: owner-linac-eng@plato.aristotle.net To: "Spencer, Kelly" Cc: =?utf-8?B?5Yqg6YCf5Zmo6K6o6K6657uE?= X-TEBIE-Originating-IP: [211.167.200.117] X-MSMail-Priority: Normal x-mimeole: Produced By Microsoft MimeOLE V6.00.2800.1106 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 This is a multi-part message in MIME format. --Boundary_(ID_lz+Ss2XW6gjJpVjrfST4/w) Content-type: text/plain; charset=utf-8 Content-transfer-encoding: 7BIT Reference from CMS library. NOTE: CMS can not guarantee the accuracy of the values reported in these tables. Independent verification is recommended. I found it correctly as Varian advertisement. James.Song Engineer & MCSE Radiological Physicist Dept. of Radiation Oncology, C.A.M.S Cancer (Institute) Hospital Chinese Academy of Medical Science Office: 86-10-67781331ext8292 E-mail: jamessong@263.net ----- Original Message ----- From: "Spencer, Kelly" To: Sent: Friday, June 04, 2004 2:22 AM Subject: Clinac 6100 STD > Hello Folks, > > Sorry to bother everyone with a mundane question, but I have a need to know > what the source to tray distance is for a Varian Clinac 6100 for block > cutting purposes. I am unable to find the distance in the operator's or > maintenance manuals. Using crude measuring tools (tape measure from > isocenter), I calculate 60.7 cm. Can anyone confirm this? > > Thanks for your help. > > Kelly > > > Kelly M. Spencer, MS DABMP > Medical Physicist > Moses Cone Regional Cancer Center > Radiation Oncology Department > 501 North Elam Avenue > Greensboro, NC 27403 > (336) 832-0631 > kelly.spencer@mosescone.com > > --Boundary_(ID_lz+Ss2XW6gjJpVjrfST4/w) Content-type: MESSAGE/RFC822; name="Varian Head Geometry Params.mht" Date: Mon, 7 Jun 2004 22:48:21 +0800 From: <¨®¨¦ Microsoft Internet Explorer 5 ¡À¡ê¡ä?> Subject: Varian Head Geometry Params MIME-version: 1.0 Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: 7BIT Content-Location: file://E:\????\CMS\BMG4.0\XiO_BMG\Libraries\HeadGeom\VarHeadGeom.htm X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Varian Head Geometry Params
Varian Linear Accelerator
Head Geometry Parameters
 
6/100
Non-IJ
6/100 IJ
600C
600C
CL18
CL1800
CL1800 IJ
2100C
2100C
CL2500
2500C
21EX
21EX
 
No MLC
No MLC
MLC
Non-IJ
No MLC
No MLC
MLC
No MLC
No MLC
MLC
Target Distance to:                  
Eff. Source to Collimator
28.9
36.2
36.2
36.3
36.2
36.2
36.6
36.2
36.2
Middle of
Upper Jaw
24.1
31.8
31.8
31.9
31.8
31.8
32.3
31.8
31.8
Middle of
Lower Jaw
33.6
40.6
40.6
40.6
40.6
40.6
40.8
40.6
40.6
Middle of
MLC Leaf
***
***
50.9
***
***
50.9
***
***
50.9
Wedge Tray (Upper)
42.1
49.2
57.4
49.2
49.2
57.4
52.9
49.2
57.4
Wedge Tray (Lower)
***
***
69.2
***
***
69.2
***
***
69.2
Block Tray (Standard)
57.7
61.0
64.8
64.8
61.0
64.8
64.7
64.8
64.8
Block Tray (Option)
64.8
64.8
***
***
64.8
***
***
***
***

--Boundary_(ID_lz+Ss2XW6gjJpVjrfST4/w)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HYY000C77H969@hubbard.azu.nl>; Mon, 7 Jun 2004 19:05:36 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004060719053218204 ; Mon, 07 Jun 2004 19:05:33 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA04382; Mon, 07 Jun 2004 19:06:04 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma004254; Mon, 07 Jun 2004 19:05:20 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id KAA03896 for linac-eng-list; Mon, 07 Jun 2004 10:13:04 -0500 (CDT) Received: from smtp.263.net (mx01.263.net.cn [211.150.96.22]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id KAA03891 for ; Mon, 07 Jun 2004 10:13:00 -0500 (CDT) Received: from cancer (localhost [127.0.0.1]) by smtp.263.net (Postfix) with ESMTP id 07C5434108 for ; Mon, 07 Jun 2004 23:12:59 +0800 (CST) Received: from cancer (unknown [211.167.200.117]) by antispam-2 (Coremail:263(040326)) with SMTP id GUHMAfqFxECwFch1.1 for ; Mon, 07 Jun 2004 23:12:59 +0800 (CST) Date: Mon, 07 Jun 2004 23:12:57 +0800 From: "James.Song" Subject: Re: Elekta Database Problem? Sender: owner-linac-eng@plato.aristotle.net To: =?utf-8?B?5Yqg6YCf5Zmo6K6o6K6657uE?= Message-id: <002e01c44ca1$ea9bef30$1511060a@cancer> MIME-version: 1.0 X-Mailer: Microsoft Outlook Express 6.00.2800.1106 Content-type: text/plain; charset=utf-8 Content-transfer-encoding: 8bit Precedence: bulk X-TEBIE-Originating-IP: [211.167.200.117] X-MSMail-Priority: Normal x-mimeole: Produced By Microsoft MimeOLE V6.00.2800.1106 X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id KAA03893 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 *** EOOH *** Date: Mon, 07 Jun 2004 23:12:57 +0800 From: "James.Song" Subject: Re: Elekta Database Problem? Sender: owner-linac-eng@plato.aristotle.net To: =?utf-8?B?5Yqg6YCf5Zmo6K6o6K6657uE?= X-TEBIE-Originating-IP: [211.167.200.117] X-MSMail-Priority: Normal x-mimeole: Produced By Microsoft MimeOLE V6.00.2800.1106 X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id KAA03893 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 ----- Original Message ----- From: "James.Song" To: "Chris Forrest" Sent: Monday, June 07, 2004 11:12 PM Subject: Re: Elekta Database Problem? Hi Group: My hospital only have a Precise. So it is SLN (Single linac Network),no CDN. I note some prescriptions was wrong: 1. Operators edit some prescriptions as ALL LINAC. But we have only one . 2. Some prescriptions which import from Pinnacle 6.2b DICOM-RT files. Some fractions no DOS. But we haved used system half of year. That's no any problems. I delete all wrong prescriptions, correct some prescriptions. Now That's is OK. Can anyone tell me why? James.Song Engineer & MCSE Radiological Physicist Dept. of Radiation Oncology, C.A.M.S Cancer (Institute) Hospital Chinese Academy of Medical Science Office: 86-10-67781331ext8292 E-mail: jamessong@263.net ----- Original Message ----- From: "Chris Forrest" To: Sent: Friday, June 04, 2004 3:27 PM Subject: Re: Elekta Database Problem? Have you tried rebooting server? Chris >>> "James.Song" 03/06/2004 23:25:07 >>> Hi Group: last night, we can't use Preminum therapy in Elekta Precise. The System note: The following process has terminated:'ILR Server' Applets will be terminated and the system will be shutdown. We has about 90 patients in the database.(RTD 4.1.0), I delete some old patients. The system is ok. but 3 hours later,same problem is coming. Any one Know how to do? Thanks in advance James.Song Engineer&MCSE Radiological Physicist Dept. of Radiation Oncology, C.A.M.S Cancer(Institute) Hospital Chinese Academy of Medical Science Office: 86-10-67781331ext8292 E-mail: jamessong@263.net  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HZ200FJR7QJT8@hubbard.azu.nl>; Wed, 9 Jun 2004 23:01:33 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004060923013001572 ; Wed, 09 Jun 2004 23:01:30 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id XAA13921; Wed, 09 Jun 2004 23:02:03 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma013872; Wed, 09 Jun 2004 23:01:32 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id NAA20411 for linac-eng-list; Wed, 09 Jun 2004 13:59:32 -0500 (CDT) Received: from ohsmtpout.civic1.ottawahospital.on.ca (mail.ottawahospital.on.ca [204.187.34.1]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id NAA20406 for ; Wed, 09 Jun 2004 13:59:29 -0500 (CDT) Received: from c-gen-exch02.Ottawahospital.on.ca (Not Verified[10.249.5.25]) by ohsmtpout.civic1.ottawahospital.on.ca with NetIQ MailMarshal (v5.5.5.9) id ; Wed, 09 Jun 2004 14:58:58 -0400 Received: by c-gen-exch02.ottawahospital.on.ca with Internet Mail Service (5.5.2657.72) id ; Wed, 09 Jun 2004 14:58:58 -0400 Date: Wed, 09 Jun 2004 14:58:50 -0400 From: "Gohier, Georges" Subject: Siemens hand controller Sender: owner-linac-eng@plato.aristotle.net To: "Linac Engineers (E-mail)" Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 09 Jun 2004 14:58:50 -0400 From: "Gohier, Georges" Subject: Siemens hand controller Sender: owner-linac-eng@plato.aristotle.net To: "Linac Engineers (E-mail)" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f I am looking for the manufacturer of the Siemens Mevatron hand controller connector. I need both the male and female part numbers. Any information would be greatly appreciated. Thanks. Georges Gohier Ottawa Hospital Integrated Cancer Care Program  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HZ200I859IAXP@hubbard.azu.nl>; Wed, 9 Jun 2004 23:39:53 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004060923394902136 ; Wed, 09 Jun 2004 23:39:49 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id XAA17814; Wed, 09 Jun 2004 23:40:22 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xmab17788; Wed, 09 Jun 2004 23:40:10 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id OAA21784 for linac-eng-list; Wed, 09 Jun 2004 14:53:25 -0500 (CDT) Received: from UTM-MAIL05A.mdacc.tmc.edu (utmlnmail05nt.mdacc.tmc.edu [143.111.84.156]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id OAA21780 for ; Wed, 09 Jun 2004 14:53:23 -0500 (CDT) Date: Wed, 09 Jun 2004 14:52:51 -0500 From: chusmith@mdanderson.org Subject: RSEA Meeting Information Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Lotus Notes Release 5.0.11 July 24, 2002 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_Le85CtGar9eM39DhxQivrA)" Precedence: bulk X-MIMETrack: Serialize by Router on UTM-MAIL05A/HOU/UTMDACC(Release 5.0.11 |July 24, 2002) at 06/09/2004 02:53:24 PM, Serialize complete at 06/09/2004 02:53:24 PM X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 09 Jun 2004 14:52:51 -0500 From: chusmith@mdanderson.org Subject: RSEA Meeting Information Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-MIMETrack: Serialize by Router on UTM-MAIL05A/HOU/UTMDACC(Release 5.0.11 |July 24, 2002) at 06/09/2004 02:53:24 PM, Serialize complete at 06/09/2004 02:53:24 PM X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This is a multipart message in MIME format. --Boundary_(ID_Le85CtGar9eM39DhxQivrA) Content-type: text/plain; charset=us-ascii Greetings, There is still time to recieve discounted registration for the 3rd Annual RSEA meeting to be held 24-25 July in Pittsburgh, Pa. Discounted Registration will end tonight at 11:59 EDT. June 10th the registration fee increases to $180.00. Details and registration are available at: http://www.aapm.org/meetings/04AM/ Information is also available at the RSEA website found at: http://linaceng.org/rsea/. For more information please contact me at chusmith@mdanderson.org Regards, Chuck Smith --Boundary_(ID_Le85CtGar9eM39DhxQivrA) Content-type: text/html; charset=us-ascii
Greetings,

There is still time to recieve discounted registration for the 3rd Annual RSEA meeting to be held 24-25 July in Pittsburgh, Pa.  Discounted Registration will end tonight at 11:59 EDT.  June 10th the registration fee increases to $180.00.

Details and registration are available at:
http://www.aapm.org/meetings/04AM/


Information is also available at the RSEA website found at: http://linaceng.org/rsea/.

 
For more information please contact me at chusmith@mdanderson.org

Regards,
Chuck Smith
--Boundary_(ID_Le85CtGar9eM39DhxQivrA)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HZ2002LOE8N1I@hubbard.azu.nl>; Thu, 10 Jun 2004 01:22:01 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004061001215803422 ; Thu, 10 Jun 2004 01:21:58 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id BAA26551; Thu, 10 Jun 2004 01:22:31 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma026537; Thu, 10 Jun 2004 01:22:11 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id QAA27819 for linac-eng-list; Wed, 09 Jun 2004 16:35:26 -0500 (CDT) Received: from phsornt422.or.providence.org (phsor-nat2.providence.org [170.220.2.14]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id QAA27815 for ; Wed, 09 Jun 2004 16:35:24 -0500 (CDT) Received: from PickupDirectory by phsornt422.or.providence.org with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2653.13) id LY4K5NW2; Wed, 09 Jun 2004 14:31:47 -0700 Received: from phsorcon06.or.providence.org ([170.220.78.187]) by phsornt422.or.providence.org with Microsoft SMTPSVC(5.0.2195.6713); Wed, 09 Jun 2004 14:31:46 -0700 Received: from phsormsg02.or.providence.org ([170.220.75.191]) by phsorcon06.or.providence.org with Microsoft SMTPSVC(5.0.2195.6713); Wed, 09 Jun 2004 14:32:48 -0700 Date: Wed, 09 Jun 2004 14:32:48 -0700 From: JamesR.Wilson@providence.org Subject: Varian 2100EX Bmag Shunt Voltages Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <0838AEB7ABB0C04481781A84D6DE7C6C19F3E6@phsormsg02.or.providence.org> MIME-version: 1.0 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_l5U1cLKoo0+3fyYQU7TpGQ)" Importance: normal Precedence: bulk X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 content-class: urn:content-classes:message Thread-Topic: Varian 2100EX Bmag Shunt Voltages Thread-Index: AcROaU9BfzW3/hw7Q6KFqndJR5lRDw== X-OriginalArrivalTime: 09 Jun 2004 21:32:48.0580 (UTC) FILETIME=[4F840040:01C44E69] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 09 Jun 2004 14:32:48 -0700 From: JamesR.Wilson@providence.org Subject: Varian 2100EX Bmag Shunt Voltages Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Importance: normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 content-class: urn:content-classes:message Thread-Topic: Varian 2100EX Bmag Shunt Voltages Thread-Index: AcROaU9BfzW3/hw7Q6KFqndJR5lRDw== X-OriginalArrivalTime: 09 Jun 2004 21:32:48.0580 (UTC) FILETIME=[4F840040:01C44E69] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This is a multi-part message in MIME format. --Boundary_(ID_l5U1cLKoo0+3fyYQU7TpGQ) Content-type: text/plain; charset=us-ascii Content-transfer-encoding: quoted-printable Is there a convenient place to measure the Bmag shunt voltages on the newer "EX" machines?? On my old machines of the past there were jacks right on the stand frame under the supply. Where would I measure them now?. Thanks,=20 =20 Jim Wilson Clinical Engineering Providence Health Systems Portland OR =20 DISCLAIMER: This message is intended for the sole use of the addressee, and may = contain information that is privileged, confidential and exempt from = disclosure under applicable law. If you are not the addressee you are = hereby notified that you may not use, copy, disclose, or distribute to = anyone the message or any information contained in the message. If you = have received this message in error, please immediately advise the = sender by reply email and delete this message. --Boundary_(ID_l5U1cLKoo0+3fyYQU7TpGQ) Content-type: text/html; charset=us-ascii Content-transfer-encoding: quoted-printable

Is there a convenient place to measure the Bmag shunt voltages on the newer “EX” machines?? On my old  = machines of the past there were jacks right on the stand frame under the supply. = Where would I measure them now?. Thanks,

 

Jim Wilson

Clinical Engineering

Providence Health Systems

Portland = OR

 

DISCLAIMER:
This message is intended for the sole use of = the addressee, and may contain information that is privileged, = confidential and exempt from disclosure under applicable law. If you are = not the addressee you are hereby notified that you may not use, copy, = disclose, or distribute to anyone the message or any information = contained in the message. If you have received this message in error, = please immediately advise the sender by reply email and delete this = message. --Boundary_(ID_l5U1cLKoo0+3fyYQU7TpGQ)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HZ20051RFDKDR@hubbard.azu.nl>; Thu, 10 Jun 2004 01:46:33 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004061001463103691 ; Thu, 10 Jun 2004 01:46:31 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id BAA28406; Thu, 10 Jun 2004 01:47:03 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma028396; Thu, 10 Jun 2004 01:46:51 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id RAA28590 for linac-eng-list; Wed, 09 Jun 2004 17:04:23 -0500 (CDT) Received: from eprism2.cancerboard.ab.ca (cancerserver.cancerboard.ab.ca [164.102.1.2]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id RAA28586 for ; Wed, 09 Jun 2004 17:04:21 -0500 (CDT) Date: Wed, 09 Jun 2004 16:04:14 -0600 From: Massimo Giovannetti Subject: Re: Varian 2100EX Bmag Shunt Voltages Sender: owner-linac-eng@plato.aristotle.net To: JamesR.Wilson@providence.org Cc: linac-eng@plato.aristotle.net Message-id: <40C7895E.7050808@cancerboard.ab.ca> MIME-version: 1.0 Content-type: text/plain; format=flowed; charset=us-ascii Content-transfer-encoding: 7bit Precedence: bulk User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.0.1) Gecko/20020823 Netscape/7.0 (CK-ACBNet) X-Accept-Language: en-us, en References: <0838AEB7ABB0C04481781A84D6DE7C6C19F3E6@phsormsg02.or.providence.org> X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 09 Jun 2004 16:04:14 -0600 From: Massimo Giovannetti Subject: Re: Varian 2100EX Bmag Shunt Voltages Sender: owner-linac-eng@plato.aristotle.net To: JamesR.Wilson@providence.org Cc: linac-eng@plato.aristotle.net X-Accept-Language: en-us, en X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hi James, There are test points on the front edge of the Carr, Mode and Bmag PCB in the Aux Electronics labelled I+ and I- that you can measure from. Massimo Tom Baker Cancer Centre Calgary, Alberta JamesR.Wilson@providence.org wrote: > Is there a convenient place to measure the Bmag shunt voltages on the > newer ?EX? machines?? On my old machines of the past there were jacks > right on the stand frame under the supply. Where would I measure them > now?. Thanks, > > > > Jim Wilson > > Clinical Engineering > > Providence Health Systems > > Portland OR > > > > DISCLAIMER: > This message is intended for the sole use of the addressee, and may > contain information that is privileged, confidential and exempt from > disclosure under applicable law. If you are not the addressee you are > hereby notified that you may not use, copy, disclose, or distribute to > anyone the message or any information contained in the message. If you > have received this message in error, please immediately advise the > sender by reply email and delete this message. > This e-mail and any attachments may contain confidential and privileged information. If you are not the intended recipient, please notify the sender immediately by return e-mail, delete this e-mail and destroy any copies. Any dissemination or use of this information by a person other than the intended recipient is unauthorized and may be illegal.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HZ300KTZC8SDY@hubbard.azu.nl>; Thu, 10 Jun 2004 13:36:39 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004061013363520675 ; Thu, 10 Jun 2004 13:36:35 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id NAA29894; Thu, 10 Jun 2004 13:37:08 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma029817; Thu, 10 Jun 2004 13:36:44 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id DAA05335 for linac-eng-list; Thu, 10 Jun 2004 03:52:46 -0500 (CDT) Received: from gondor.dpa.act.gov.au (gondor.dpa.act.gov.au [136.153.2.50]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id DAA05331 for ; Thu, 10 Jun 2004 03:52:44 -0500 (CDT) Received: (from smap@localhost) by gondor.dpa.act.gov.au (8.11.1/8.11.1) id i5A8qdi28611 for ; Thu, 10 Jun 2004 18:52:39 +1000 (EST) Received: from unknown(10.226.2.7) by gondor via smap (V5.5) id xma013707; Thu, 10 Jun 2004 16:06:31 +1000 Received: by cal007.dpa.act.gov.au with Internet Mail Service (5.5.2657.72) id ; Thu, 10 Jun 2004 16:06:28 +1000 Date: Thu, 10 Jun 2004 16:06:19 +1000 From: "Caunt, Peter" Subject: Linac - electricians Sender: owner-linac-eng@plato.aristotle.net To: "Linac Eng (E-mail)" Message-id: <2FC7DBCD6D6AD611AD7B0090278CABAEE79E9A@CAL030> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 10 Jun 2004 16:06:19 +1000 From: "Caunt, Peter" Subject: Linac - electricians Sender: owner-linac-eng@plato.aristotle.net To: "Linac Eng (E-mail)" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Listmembers, Apologies for this non-machine request but I believe it is a linac-eng question. Had discussions recently with some government types regarding radiotherapy "engineering" support services and the question posed concerns the role of a "linac engineer" and what comparative service would be provided if you only had electricians on contract. While somewhat of a devils advocate question, it does draw out the essential characteristics of the job and requires an explanation in basic terms. Any input to assist in preparing a response would be appreciated. I will offer my email address as an option to those who are concerned about the relevance of the request to the linac-eng group. Kind Regards, Peter Caunt Radiation Oncology Canberra Hospital Australia. Peter.Caunt@act.gov.au "Important: This transmission is intended only for the use of the addressee and may contain confidential or legally privileged information. If you are not the intended recipient, you are notified that any use or dissemination of this communication is strictly prohibited. If you receive this transmission in error please notify the author immediately and delete all copies of this transmission." ---------------------------------------------------------------------------- ------------------------------------------ This email, and any attachments, may be confidential and also privileged. If you are not the intended recipient: Please notify the sender and delete all copies of this transmission along with any attachments immediately. You should not copy or use it for any purpose, nor disclose its contents to any other person. ---------------------------------------------------------------------------- ------------------------------------------  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HZ300EHYJLBHP@hubbard.azu.nl>; Thu, 10 Jun 2004 16:15:14 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004061016150227134 ; Thu, 10 Jun 2004 16:15:02 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id QAA02127; Thu, 10 Jun 2004 16:15:34 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma002040; Thu, 10 Jun 2004 16:15:05 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id HAA07282 for linac-eng-list; Thu, 10 Jun 2004 07:31:12 -0500 (CDT) Received: from mail14.messagelabs.com (mail14.messagelabs.com [212.125.75.19]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id HAA07278 for ; Thu, 10 Jun 2004 07:31:10 -0500 (CDT) Received: (qmail 26726 invoked from network); Thu, 10 Jun 2004 12:30:38 +0000 Received: from host217-37-197-245.in-addr.btopenworld.com (HELO CHEXCHANGE1.cromwellhospital.com) (217.37.197.245) by server-5.tower-14.messagelabs.com with SMTP; Thu, 10 Jun 2004 12:30:38 +0000 Received: by CHEXCHANGE1.cromwellhospital.com with Internet Mail Service (5.5.2653.19) id ; Thu, 10 Jun 2004 13:32:20 +0100 Date: Thu, 10 Jun 2004 13:32:19 +0100 From: Kerry Clark Subject: RE: Linac - electricians Sender: owner-linac-eng@plato.aristotle.net To: "'Caunt, Peter'" , "Linac Eng (E-mail)" Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-VirusChecked: Checked X-Env-Sender: Kerry.Clark@Cromwellhospital.com X-Msg-Ref: server-5.tower-14.messagelabs.com!1086870638!7879374 X-StarScan-Version: 5.2.10; banners=cromwellhospital.com,-,- X-Originating-IP: [217.37.197.245] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 10 Jun 2004 13:32:19 +0100 From: Kerry Clark Subject: RE: Linac - electricians Sender: owner-linac-eng@plato.aristotle.net To: "'Caunt, Peter'" , "Linac Eng (E-mail)" X-VirusChecked: Checked X-Env-Sender: Kerry.Clark@Cromwellhospital.com X-Msg-Ref: server-5.tower-14.messagelabs.com!1086870638!7879374 X-StarScan-Version: 5.2.10; banners=cromwellhospital.com,-,- X-Originating-IP: [217.37.197.245] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Peter, It seems like a valid question for the group to me, I've seen it before where the paper shufflers can't comprehend the need to pay a specialist to keep complicated machines going and within tight tolerances. You look bad if the machines are not working, you look bad if you have nothing to do because the machines are working. A few ideas; I'm not sure about the Aussie standards for medical engineering but surely you can't let anyone repair medical equipment without proper training and supervision, hence the need for a specialist "linac engineer". Although I have met some very capable sparkies I'm sure the areas of RF engineering and data communications would leave them lost. Does this mean they would have to contract plumbers as well for any problem with water cooling systems? Can you sell them the comparative costs of downtime/ full manufacturers service contracts? have fun with this one Kerry Cromwell Hospital London -----Original Message----- From: Caunt, Peter [mailto:Peter.Caunt@act.gov.au] Sent: 10 June 2004 07:06 To: Linac Eng (E-mail) Subject: Linac - electricians Listmembers, Apologies for this non-machine request but I believe it is a linac-eng question. Had discussions recently with some government types regarding radiotherapy "engineering" support services and the question posed concerns the role of a "linac engineer" and what comparative service would be provided if you only had electricians on contract. While somewhat of a devils advocate question, it does draw out the essential characteristics of the job and requires an explanation in basic terms. Any input to assist in preparing a response would be appreciated. I will offer my email address as an option to those who are concerned about the relevance of the request to the linac-eng group. Kind Regards, Peter Caunt Radiation Oncology Canberra Hospital Australia. Peter.Caunt@act.gov.au "Important: This transmission is intended only for the use of the addressee and may contain confidential or legally privileged information. If you are not the intended recipient, you are notified that any use or dissemination of this communication is strictly prohibited. If you receive this transmission in error please notify the author immediately and delete all copies of this transmission." ---------------------------------------------------------------------------- ------------------------------------------ This email, and any attachments, may be confidential and also privileged. If you are not the intended recipient: Please notify the sender and delete all copies of this transmission along with any attachments immediately. You should not copy or use it for any purpose, nor disclose its contents to any other person. ---------------------------------------------------------------------------- ------------------------------------------ ________________________________________________________________________ This e-mail has been scanned for all viruses by Star Internet. The service is powered by MessageLabs. For more information on a proactive anti-virus service working around the clock, around the globe, visit: http://www.star.net.uk ________________________________________________________________________ ************************************************************************* Privileged or Confidential Information may be contained in this message. If you are not the addressee of this message (or responsible for its delivery to the addressee), you may not review or copy it, deliver it to anyone else or use information in it. In such a case, you should destroy this message and kindly notify the sender by reply email. Internet communications are not secure and therefore the Cromwell Hospital does not accept legal responsibility for the contents of this message. Although the Cromwell Hospital operates anti-virus programs, it does not accept responsibility for any damage whatsoever that is caused by viruses being passed. Opinions, conclusions and other information in this message that do not relate to the official business of the Cromwell Hospital are neither given nor endorsed by it. Thank you. ************************************************************************* ________________________________________________________________________ This e-mail has been scanned for all viruses by Star Internet. The service is powered by MessageLabs. For more information on a proactive anti-virus service working around the clock, around the globe, visit: http://www.star.net.uk ________________________________________________________________________  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HZ300LWAO9K35@hubbard.azu.nl>; Thu, 10 Jun 2004 17:56:21 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004061017561830500 ; Thu, 10 Jun 2004 17:56:18 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id RAA20412; Thu, 10 Jun 2004 17:56:50 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma020323; Thu, 10 Jun 2004 17:56:12 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id JAA08649 for linac-eng-list; Thu, 10 Jun 2004 09:05:52 -0500 (CDT) Received: from nasvir01.nas.medcity.net (mail.nas.medcity.net [199.91.33.30]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id JAA08645 for ; Thu, 10 Jun 2004 09:05:51 -0500 (CDT) Received: from 159.139.152.113 by nasvir01.nas.medcity.net (InterScan E-Mail VirusWall NT); Thu, 10 Jun 2004 09:03:44 -0500 Received: by corpexcon02.hca.corpad.net with Internet Mail Service (5.5.2657.72) id ; Thu, 10 Jun 2004 09:04:04 -0500 Date: Thu, 10 Jun 2004 09:03:55 -0500 From: Tirabassi Michael Subject: RE: Linac - electricians Sender: owner-linac-eng@plato.aristotle.net To: "'Caunt, Peter'" Cc: "Linac list (E-mail)" Message-id: <39A90AC123CB9D428821E2BC273E73CD01F866DC@ftwex03.hca.corpad.net> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 10 Jun 2004 09:03:55 -0500 From: Tirabassi Michael Subject: RE: Linac - electricians Sender: owner-linac-eng@plato.aristotle.net To: "'Caunt, Peter'" Cc: "Linac list (E-mail)" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Are you asking if it would be appropriate for an electrician to work on a linac? Before I got into the medical field I worked 8.5 years as an industrial/commercial electrician. Therefore I feel somewhat qualified to comment on this question. All electricians are not created equal. Having said that, I certainly know that an individual who is an electrician could possess the understanding and capability to "service" a linac. Someone with motor control, high voltage, process controller experience etc.Someone whose background would help them understand the workings of a linac. But as we used to say & I have witnessed personally, some "electricians" know just enough to be dangerous! Considering the "nature" of a linac I would think that the role of a general "electrician" in regards to servicing a linac would stop at the ac line inputs in the modulator. Mike T. Rapides Cancer Center -----Original Message----- From: Caunt, Peter [mailto:Peter.Caunt@act.gov.au] Sent: Thursday, June 10, 2004 1:06 AM To: Linac Eng (E-mail) Subject: Linac - electricians Listmembers, Apologies for this non-machine request but I believe it is a linac-eng question. Had discussions recently with some government types regarding radiotherapy "engineering" support services and the question posed concerns the role of a "linac engineer" and what comparative service would be provided if you only had electricians on contract. While somewhat of a devils advocate question, it does draw out the essential characteristics of the job and requires an explanation in basic terms. Any input to assist in preparing a response would be appreciated. I will offer my email address as an option to those who are concerned about the relevance of the request to the linac-eng group. Kind Regards, Peter Caunt Radiation Oncology Canberra Hospital Australia. Peter.Caunt@act.gov.au "Important: This transmission is intended only for the use of the addressee and may contain confidential or legally privileged information. If you are not the intended recipient, you are notified that any use or dissemination of this communication is strictly prohibited. If you receive this transmission in error please notify the author immediately and delete all copies of this transmission." ---------------------------------------------------------------------------- ------------------------------------------ This email, and any attachments, may be confidential and also privileged. If you are not the intended recipient: Please notify the sender and delete all copies of this transmission along with any attachments immediately. You should not copy or use it for any purpose, nor disclose its contents to any other person. ---------------------------------------------------------------------------- ------------------------------------------  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HZ300LX1OB035@hubbard.azu.nl>; Thu, 10 Jun 2004 17:57:13 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004061017570830527 ; Thu, 10 Jun 2004 17:57:08 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id RAA20588; Thu, 10 Jun 2004 17:57:41 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma020504; Thu, 10 Jun 2004 17:57:10 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id JAA08700 for linac-eng-list; Thu, 10 Jun 2004 09:08:24 -0500 (CDT) Received: from ghs2kex1.ghsbtr.net ([65.198.170.38]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id JAA08696 for ; Thu, 10 Jun 2004 09:08:22 -0500 (CDT) Received: from ghs2kex1.ghsbtr.net ([64.56.20.63]) by ghs2kex1.ghsbtr.net with Microsoft SMTPSVC(5.0.2195.5329); Thu, 10 Jun 2004 09:07:52 -0500 Date: Thu, 10 Jun 2004 09:07:52 -0500 From: "Martin, Kevin" Subject: FW: Siemens fluctuating PFN... Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <2CB1E3B8FA1AA447A4231A451F5043524BE61D@ip-64-56-20-63.ntg.com> MIME-version: 1.0 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_jXoauuy5R95rGXjyr2R/KA)" Importance: normal Precedence: bulk X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 Content-Class: urn:content-classes:message Thread-Topic: Siemens fluctuating PFN... thread-index: AcRO81pFaCkXJ511TxGkfQU2REGjyAAAC0Lg X-OriginalArrivalTime: 10 Jun 2004 14:07:52.0178 (UTC) FILETIME=[51A21520:01C44EF4] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 10 Jun 2004 09:07:52 -0500 From: "Martin, Kevin" Subject: FW: Siemens fluctuating PFN... Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Importance: normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 Content-Class: urn:content-classes:message Thread-Topic: Siemens fluctuating PFN... thread-index: AcRO81pFaCkXJ511TxGkfQU2REGjyAAAC0Lg X-OriginalArrivalTime: 10 Jun 2004 14:07:52.0178 (UTC) FILETIME=[51A21520:01C44EF4] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This is a multi-part message in MIME format. --Boundary_(ID_jXoauuy5R95rGXjyr2R/KA) Content-type: text/plain; charset=us-ascii Content-transfer-encoding: quoted-printable =20 Dear lurkers: I have a KD-2 with 6 - 15X....5 thru 21e Twice a day I have to adjust the pfn to stabilize the dose pulse =3D higher then lower ( dose pulse drops from 5 to 2.5 volts) If not I'll get dose rate errors on =20 15x and 6,9,and 12 e....6X and higher electrons are ok and require no adjustments... Symptom takes a couple of hours to happen but are very consistent.. To date I have replaced the Fc # 4 beam control..F/D converters #3,4 ( G32)....Trigger A...B...Klystron Interface pcb...and master clock I have monitored the pfn voltage on the klystron interface pcb (tp4) and consistently fluctuates approx. .1 to .15 volts higher and lower to cause the dose rate errors=20 (15x-1.25 volts ok however will drift to 1.35 volts -dose rates) And so it goes I adjust the pfn higher then lower changing parts as I go and I have found my self thinking about blowing up this thing ... a couple of times...just kidden..hhmmmmm So is there some feedback coming back from the modulator that can be affecting / causing this problem... ps..I have also adjusted the filament voltage / and RF input from 40 watts to 60 to 80 and back to 60 with no change..=20 All power supplies have been monitored and appear stable ..=20 =20 Any ideas..I'll share the result with the list of course.. thanks Kevin DISCLAIMER: This electronic message, including any attachments, is confidential and = intended solely for use of the intended recipient(s). This message may = contain information that is privileged or otherwise protected from = disclosure by applicable law. Any unauthorized disclosure, = dissemination, use or reproduction is strictly prohibited. If you have = received this message in error, please delete it and notify the sender = immediately. --Boundary_(ID_jXoauuy5R95rGXjyr2R/KA) Content-type: text/html; charset=us-ascii Content-transfer-encoding: quoted-printable Message


 
Dear lurkers:
I have a KD-2 with 6 - 15X....5 thru=20 21e
Twice a day I=20 have to adjust the pfn to stabilize the dose pulse =3D higher then lower (  dose pulse drops from 5 to 2.5 = volts)  If=20 not I'll get dose rate errors on  
 15x and=20 6,9,and 12 e....6X and higher electrons are ok and require no=20 adjustments...
Symptom takes a couple of hours to = happen=20 but are very=20 consistent..
To = date I have=20 replaced the Fc # 4 beam = control..F/D=20 converters #3,4 ( G32)....Trigger A...B...Klystron Interface pcb...and = master=20 clock
I have = monitored the=20 pfn voltage on the klystron interface pcb (tp4) and consistently = fluctuates=20 approx. .1 to .15 volts higher and lower to cause the dose rate errors=20
(15x-1.25 volts ok=20 however will drift to 1.35 volts -dose rates)
And so it goes=20 I adjust the pfn higher then lower changing parts as I go and I have = found my=20 self thinking about blowing up  this thing  ... a=20 couple of times...just kidden..hhmmmmm
So is there some feedback coming back from = the=20 modulator that can be affecting / causing this=20 problem...
ps..I have also adjusted the filament = voltage / and RF=20 input from 40 watts to 60   to 80 and back to 60 with no=20 change.. 
All=20 power supplies have been monitored and appear stable=20 .. 
 
Any ideas..I'll share the result with the = list of=20 course..
 thanks  =20 Kevin

DISCLAIMER:
This = electronic message, including any attachments, is confidential and = intended solely for use of the intended recipient(s). This message may = contain information that is privileged or otherwise protected from = disclosure by applicable law. Any unauthorized disclosure, = dissemination, use or reproduction is strictly prohibited. If you have = received this message in error, please delete it and notify the sender = immediately. --Boundary_(ID_jXoauuy5R95rGXjyr2R/KA)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HZ30016HP1RB6@hubbard.azu.nl>; Thu, 10 Jun 2004 18:13:04 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004061018130330817 ; Thu, 10 Jun 2004 18:13:03 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA22521; Thu, 10 Jun 2004 18:13:35 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma022504; Thu, 10 Jun 2004 18:13:28 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id IAA07679 for linac-eng-list; Thu, 10 Jun 2004 08:18:01 -0500 (CDT) Received: from mail20.nhs.uk (mail20.nhs.uk [62.6.139.212]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id IAA07675 for ; Thu, 10 Jun 2004 08:17:59 -0500 (CDT) Received: from [10.191.254.3] (helo=relayint1.nhs.uk) by mail20.nhs.uk with esmtp (MTC MTA) id 1BYPQv-0006xM-Ca for linac-eng@plato.aristotle.net; Thu, 10 Jun 2004 14:17:29 +0100 Received: from relay.nhs.uk (194.62.42.143) by relayint1.nhs.uk (Syntegra-I1 7.0.008) id 40926E2F0097BACA for linac-eng@plato.aristotle.net; Thu, 10 Jun 2004 14:17:29 +0100 Received: from mercury.xuhb.nhs.uk (193.240.116.176) by relay.nhs.uk (Syntegra-3 7.0.008) (authenticated as smtp_uhb_nhs_uk@es2002.nhs.uk) id 40C850A20000A338; Thu, 10 Jun 2004 14:17:29 +0100 Received: by MERCURY with Internet Mail Service (5.5.2657.72) id ; Thu, 10 Jun 2004 14:16:50 +0100 Date: Thu, 10 Jun 2004 14:16:34 +0100 From: Graham Chalmers Subject: RE: Linac - electricians Sender: owner-linac-eng@plato.aristotle.net To: "'Caunt, Peter'" , "Linac Eng (E-mail)" Message-id: MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_wbqfyYPMbGGRbexgM7D6BQ)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 10 Jun 2004 14:16:34 +0100 From: Graham Chalmers Subject: RE: Linac - electricians Sender: owner-linac-eng@plato.aristotle.net To: "'Caunt, Peter'" , "Linac Eng (E-mail)" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_wbqfyYPMbGGRbexgM7D6BQ) Content-type: text/plain; CHARSET=US-ASCII Dear Peter It seems to me that you need to clearly differentiate the skills that are required to be a good LA engineer and those that an electrician on contract might have. It is worth stressing all the different aspects of the machine's complex systems you want to cover The former would be highly skilled at maintaining highly complex and patient critical equipment consisting of high precision mechanical e.g MLC technology, microwave, vacuum, HT and computing equipment as well as skills and responsibilities in quality assuring the machine, any repairs made, its calibration and to some extent its acceptability for patient treatment. The latter person, if I understand your terminology, would not have this range of expertise. No disrespect to any contract electricians but in general a person who does mains wiring, changes light bulbs and does basic plant repairs may not typically have the range of skills or knowledge that I would anticipate a from a good LA technician. I have seen on interviewing for 'electronics technicians' the difference between those who understand electronics and those who 'know all about electronics' because they have installed a CCTV system Best wishes Graham Chalmers Radiotherapy Physics University Hospital Birmingham NHS Trust Birmingham B15 2TH 0121-627-2266 -----Original Message----- From: Caunt, Peter [mailto:Peter.Caunt@act.gov.au] Sent: 10 June 2004 07:06 To: Linac Eng (E-mail) Subject: Linac - electricians Listmembers, Apologies for this non-machine request but I believe it is a linac-eng question. Had discussions recently with some government types regarding radiotherapy "engineering" support services and the question posed concerns the role of a "linac engineer" and what comparative service would be provided if you only had electricians on contract. While somewhat of a devils advocate question, it does draw out the essential characteristics of the job and requires an explanation in basic terms. Any input to assist in preparing a response would be appreciated. I will offer my email address as an option to those who are concerned about the relevance of the request to the linac-eng group. Kind Regards, Peter Caunt Radiation Oncology Canberra Hospital Australia. Peter.Caunt@act.gov.au "Important: This transmission is intended only for the use of the addressee and may contain confidential or legally privileged information. If you are not the intended recipient, you are notified that any use or dissemination of this communication is strictly prohibited. If you receive this transmission in error please notify the author immediately and delete all copies of this transmission." ---------------------------------------------------------------------------- ------------------------------------------ This email, and any attachments, may be confidential and also privileged. If you are not the intended recipient: Please notify the sender and delete all copies of this transmission along with any attachments immediately. You should not copy or use it for any purpose, nor disclose its contents to any other person. ---------------------------------------------------------------------------- ------------------------------------------ DISCLAIMER: This e-mail contains proprietary information some or all of which may be confidential or legally privileged. It is for the exclusive use of the intended recipient(s) only. If an addressing or transmission error has misdirected this e-mail and you are not the intended recipient(s), please notify the author by replying to this e-mail. If you are not the intended recipient you must not use, disclose, distribute, copy, print, or rely on this e-mail, as this may be unlawful. --Boundary_(ID_wbqfyYPMbGGRbexgM7D6BQ) Content-type: text/html Content-transfer-encoding: quoted-printable RE: Linac - electricians

Dear Peter

It seems to me that you need to clearly differentiate = the skills that are required to be a good LA engineer and those that an = electrician on contract might have.

It is worth stressing all the different aspects of = the machine's complex systems you want to cover

The former would be highly skilled at maintaining = highly complex and patient critical equipment consisting of high = precision mechanical e.g MLC technology, microwave, vacuum, HT and = computing equipment as well as skills and responsibilities in quality = assuring the machine, any repairs made, its calibration and to some = extent its acceptability for patient treatment.

The latter person, if I understand your terminology, = would not have this range of expertise.

No disrespect to any contract electricians but in = general a person who does mains wiring, changes light bulbs and does = basic plant repairs may not typically have the range of skills or = knowledge that I would anticipate a from a good LA technician. I have = seen on interviewing for 'electronics technicians' the difference = between those who understand electronics and those who 'know all about = electronics' because they have installed a CCTV system

Best wishes

Graham Chalmers

Radiotherapy Physics

University Hospital Birmingham NHS Trust

Birmingham B15 2TH

0121-627-2266

-----Original Message-----
From: Caunt, Peter [mailto:Peter.Caunt@act.gov.au= ]
Sent: 10 June 2004 07:06
To: Linac Eng (E-mail)
Subject: Linac - electricians

Listmembers,
          &nb= sp;           &nb= sp; Apologies for this non-machine request but I believe
it is a linac-eng question.

Had discussions recently with some government types = regarding radiotherapy
"engineering" support services and the = question posed concerns the role of a
"linac engineer" and what comparative = service would be provided if you only
had electricians on contract.

While somewhat of a devils advocate question, it does = draw out the essential
characteristics of the job and requires an = explanation in basic terms.

Any input to assist in preparing a response would be = appreciated.

I will offer my email address as an option to those = who are concerned about
the relevance of the request to the linac-eng = group.

Kind Regards,



Peter Caunt
Radiation Oncology
Canberra Hospital
Australia.

Peter.Caunt@act.gov.au

"Important: This transmission is intended only = for the use of the addressee
and may contain confidential or legally privileged = information.
If you are not the intended recipient, you are = notified that any use or
dissemination of this communication is strictly = prohibited.  If you receive
this transmission in error please notify the author = immediately and delete
all copies of this transmission."

 

---------------------------------------------------------------= -------------
------------------------------------------
 This email, and any attachments, may be = confidential and also privileged.
If you are not the intended recipient:
Please notify the sender and delete all copies of = this transmission along
with any attachments immediately.
You should not copy or use it for any purpose, nor = disclose its contents to
any other person.
---------------------------------------------------------------= -------------
------------------------------------------
DISCLAIMER: This e-mail contains proprietary = information some or all of which may be confidential or legally = privileged. It is for the exclusive use of the intended recipient(s) = only. If an addressing or transmission error has misdirected this = e-mail and you are not the intended recipient(s), please notify the = author by replying to this e-mail. If you are not the intended = recipient you must not use, disclose, distribute, copy, print, or rely = on this e-mail, as this may be unlawful.

--Boundary_(ID_wbqfyYPMbGGRbexgM7D6BQ)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HZ30071TSIT3F@hubbard.azu.nl>; Thu, 10 Jun 2004 19:28:08 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004061019280532132 ; Thu, 10 Jun 2004 19:28:05 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA01350; Thu, 10 Jun 2004 19:28:38 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xmad01337; Thu, 10 Jun 2004 19:28:34 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id KAA11452 for linac-eng-list; Thu, 10 Jun 2004 10:52:20 -0500 (CDT) Received: from mail5.hs.uab.edu (msgmail5.hs.uab.edu [164.111.99.114]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id KAA11448 for ; Thu, 10 Jun 2004 10:52:18 -0500 (CDT) Received: from msgia.hs.uab.edu not authenticated [10.20.2.43] by mail5.hs.uab.edu with NetMail SMTP Agent $Revision: 3.22.1.13 $ on Novell NetWare; Thu, 10 Jun 2004 10:51:47 -0500 Received: from INET-MTA by msgia.hs.uab.edu with Novell_GroupWise; Thu, 10 Jun 2004 10:51:47 -0500 Date: Thu, 10 Jun 2004 10:51:36 -0500 From: Stephen Jordan Subject: RF rotary joint repair Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.5.1 Content-type: text/plain; charset=US-ASCII Content-disposition: inline Content-transfer-encoding: 7bit Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 10 Jun 2004 10:51:36 -0500 From: Stephen Jordan Subject: RF rotary joint repair Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Content-disposition: inline X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f I have heard of cases in which engineers replaced the o-ring(s) in the rotary joint due to leaking. Does anyone have any information on this regarding o-ring size and material? Thanks in adavnce! Steve Jordan UAB Rad Physics  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HZ30074YSUE3F@hubbard.azu.nl>; Thu, 10 Jun 2004 19:35:04 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004061019350132227 ; Thu, 10 Jun 2004 19:35:01 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA02060; Thu, 10 Jun 2004 19:35:34 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma001984; Thu, 10 Jun 2004 19:34:58 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id KAA11467 for linac-eng-list; Thu, 10 Jun 2004 10:53:02 -0500 (CDT) Received: from webshield.swchsc.on.ca (mail.sw.ca [142.76.1.49]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id KAA11463 for ; Thu, 10 Jun 2004 10:52:58 -0500 (CDT) Received: from unknown(142.76.240.40) by webshield.swchsc.on.ca via csmap id c9911a0e_baf6_11d8_8787_0002b3a35074_24856; Thu, 10 Jun 2004 11:56:52 -0400 (EDT) Received: by bajor.tsrcc.on.ca with Internet Mail Service (5.5.2653.19) id ; Thu, 10 Jun 2004 11:52:25 -0400 Date: Thu, 10 Jun 2004 11:52:23 -0400 From: "Rozenblat, Alex" Subject: RE: Linac - electricians Sender: owner-linac-eng@plato.aristotle.net To: 'Tirabassi Michael' , "'Caunt, Peter'" Cc: "Linac list (E-mail)" Message-id: <4631AA4F502ED711AE0700A0C9EBCF2964F719@bajor.tsrcc.on.ca> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_Ts6jRvVAzNYrdGfXz7AICw)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 10 Jun 2004 11:52:23 -0400 From: "Rozenblat, Alex" Subject: RE: Linac - electricians Sender: owner-linac-eng@plato.aristotle.net To: 'Tirabassi Michael' , "'Caunt, Peter'" Cc: "Linac list (E-mail)" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_Ts6jRvVAzNYrdGfXz7AICw) Content-type: text/plain; charset=iso-8859-1 Do I understand that the question is the appropriate appreciation of our distinguished position in professional world and not the background we come from? Some of us have somewhat relevant University degrees, but some of us came with little if no knowledge about many aspects of linear accelerator functioning. Many of us (majority, I hope) became unique specialists who have no parallel match in professional world. I would go even to such extend to say that my knowledge exceeds many times over "medical equipment engineer" knowledge, simply just because of our versatility and demand to know (learn) nuances in so many fields. And yet feel like we have to learn something new every single day. So, to fight a government/authorities for your recognition as a unique professional you have to prove that set/combination of your skills/knowledge cannot be match by any other professional be it a pro in electronics, or electrician, or plumber, or RF specialist, or computer wiz, or mechanic ... Best luck, Alex Rozenblat, TSRCC, Toronto -----Original Message----- From: Tirabassi Michael [mailto:Michael.Tirabassi@HCAHealthcare.com] Sent: 10 June 2004 10:04 To: 'Caunt, Peter' Cc: Linac list (E-mail) Subject: RE: Linac - electricians Are you asking if it would be appropriate for an electrician to work on a linac? Before I got into the medical field I worked 8.5 years as an industrial/commercial electrician. Therefore I feel somewhat qualified to comment on this question. All electricians are not created equal. Having said that, I certainly know that an individual who is an electrician could possess the understanding and capability to "service" a linac. Someone with motor control, high voltage, process controller experience etc.Someone whose background would help them understand the workings of a linac. But as we used to say & I have witnessed personally, some "electricians" know just enough to be dangerous! Considering the "nature" of a linac I would think that the role of a general "electrician" in regards to servicing a linac would stop at the ac line inputs in the modulator. Mike T. Rapides Cancer Center -----Original Message----- From: Caunt, Peter [mailto:Peter.Caunt@act.gov.au] Sent: Thursday, June 10, 2004 1:06 AM To: Linac Eng (E-mail) Subject: Linac - electricians Listmembers, Apologies for this non-machine request but I believe it is a linac-eng question. Had discussions recently with some government types regarding radiotherapy "engineering" support services and the question posed concerns the role of a "linac engineer" and what comparative service would be provided if you only had electricians on contract. While somewhat of a devils advocate question, it does draw out the essential characteristics of the job and requires an explanation in basic terms. Any input to assist in preparing a response would be appreciated. I will offer my email address as an option to those who are concerned about the relevance of the request to the linac-eng group. Kind Regards, Peter Caunt Radiation Oncology Canberra Hospital Australia. Peter.Caunt@act.gov.au "Important: This transmission is intended only for the use of the addressee and may contain confidential or legally privileged information. If you are not the intended recipient, you are notified that any use or dissemination of this communication is strictly prohibited. If you receive this transmission in error please notify the author immediately and delete all copies of this transmission." ---------------------------------------------------------------------------- ------------------------------------------ This email, and any attachments, may be confidential and also privileged. If you are not the intended recipient: Please notify the sender and delete all copies of this transmission along with any attachments immediately. You should not copy or use it for any purpose, nor disclose its contents to any other person. ---------------------------------------------------------------------------- ------------------------------------------ --Boundary_(ID_Ts6jRvVAzNYrdGfXz7AICw) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: quoted-printable RE: Linac - electricians

Do I understand that the question is the appropriate = appreciation of our distinguished position in professional world and = not the background we come from? Some of us have somewhat relevant = University degrees, but some of us came with little if no knowledge = about many aspects of linear

accelerator functioning. Many of us (majority, I = hope) became unique specialists who have no parallel match in = professional world. I would go even to such extend to say that my = knowledge exceeds many times over  "medical equipment = engineer" knowledge, simply just because of our versatility and = demand to know (learn) nuances in so many fields. And yet feel like we = have to learn something new every single day.

So, to fight a government/authorities for your = recognition as a unique professional you have to prove that = set/combination of your skills/knowledge cannot be match by any other = professional be it a pro in electronics, or electrician, or plumber, or = RF specialist, or computer wiz, or mechanic ...

Best luck,

Alex Rozenblat,
TSRCC, Toronto

-----Original Message-----
From: Tirabassi Michael [mailto:Michael.Tirab= assi@HCAHealthcare.com]
Sent: 10 June 2004 10:04
To: 'Caunt, Peter'
Cc: Linac list (E-mail)
Subject: RE: Linac - electricians


Are you asking if it would be appropriate for an = electrician to work on a
linac?

Before I got into the medical field I worked 8.5 = years as an
industrial/commercial electrician. Therefore I feel = somewhat qualified to
comment on this question. All electricians are not = created equal. Having
said that, I certainly know that an individual who = is an electrician could
possess the understanding and capability to = "service" a linac. Someone with
motor control, high voltage, process controller = experience etc.Someone whose
background would help them understand the workings = of a linac. But as we
used to say & I have witnessed personally, some = "electricians" know just
enough to be dangerous!
Considering the "nature" of a linac I = would think that the role of a general
"electrician" in regards to servicing a = linac would stop at the ac line
inputs in the modulator.



Mike T.
Rapides Cancer Center


-----Original Message-----
From: Caunt, Peter [mailto:Peter.Caunt@act.gov.au= ]
Sent: Thursday, June 10, 2004 1:06 AM
To: Linac Eng (E-mail)
Subject: Linac - electricians


Listmembers,
          &nb= sp;           &nb= sp; Apologies for this non-machine request but I believe
it is a linac-eng question.

Had discussions recently with some government types = regarding radiotherapy
"engineering" support services and the = question posed concerns the role of a
"linac engineer" and what comparative = service would be provided if you only
had electricians on contract.

While somewhat of a devils advocate question, it does = draw out the essential
characteristics of the job and requires an = explanation in basic terms.

Any input to assist in preparing a response would be = appreciated.

I will offer my email address as an option to those = who are concerned about
the relevance of the request to the linac-eng = group.

Kind Regards,



Peter Caunt
Radiation Oncology
Canberra Hospital
Australia.

Peter.Caunt@act.gov.au

"Important: This transmission is intended only = for the use of the addressee
and may contain confidential or legally privileged = information.
If you are not the intended recipient, you are = notified that any use or
dissemination of this communication is strictly = prohibited.  If you receive
this transmission in error please notify the author = immediately and delete
all copies of this transmission."

 

---------------------------------------------------------------= -------------
------------------------------------------
 This email, and any attachments, may be = confidential and also privileged.
If you are not the intended recipient:
Please notify the sender and delete all copies of = this transmission along
with any attachments immediately.
You should not copy or use it for any purpose, nor = disclose its contents to
any other person.
---------------------------------------------------------------= -------------
------------------------------------------

--Boundary_(ID_Ts6jRvVAzNYrdGfXz7AICw)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HZ30033ISUEGN@hubbard.azu.nl>; Thu, 10 Jun 2004 19:35:08 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004061019350532231 ; Thu, 10 Jun 2004 19:35:05 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA02082; Thu, 10 Jun 2004 19:35:38 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma002040; Thu, 10 Jun 2004 19:35:27 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id KAA11376 for linac-eng-list; Thu, 10 Jun 2004 10:49:44 -0500 (CDT) Received: from PHSEXCHICI.MGH.HARVARD.EDU (phsexchici.mgh.harvard.edu [132.183.126.51]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id KAA11372 for ; Thu, 10 Jun 2004 10:49:42 -0500 (CDT) Received: by phsexchici.mgh.harvard.edu with Internet Mail Service (5.5.2657.72) id ; Thu, 10 Jun 2004 11:49:12 -0400 Date: Thu, 10 Jun 2004 11:49:09 -0400 From: "Maddox, Buford J" Subject: RE: Siemens fluctuating PFN... Sender: owner-linac-eng@plato.aristotle.net To: "'Martin, Kevin'" , linac-eng@plato.aristotle.net Message-id: <36298D09ED1AD311B4DC0008C7F4D4E111466498@phsexch6.partners.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_Y3RALCVkvuIjHDLHdJAMUw)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 10 Jun 2004 11:49:09 -0400 From: "Maddox, Buford J" Subject: RE: Siemens fluctuating PFN... Sender: owner-linac-eng@plato.aristotle.net To: "'Martin, Kevin'" , linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_Y3RALCVkvuIjHDLHdJAMUw) Content-type: text/plain; charset=ISO-8859-1 This sounds like a problem I had with the high voltage divider that feeds the DeQ circuits in another brand of machine. Had bad resistors, one open and one only partially cracked. They changed as they heated up, showed wrong values when tested with a power supply. Old carbon composition resistors were known for this kind of instability when used in HV applications. Does KD2 have ordinary DEQ or the newer flyback system that I see in the Primus I have? Changes in pulse width or relative timing have caught me by surprise sometimes. Jerry -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Martin, Kevin Sent: Thursday, June 10, 2004 10:08 AM To: linac-eng@plato.aristotle.net Subject: FW: Siemens fluctuating PFN... Dear lurkers: I have a KD-2 with 6 - 15X....5 thru 21e Twice a day I have to adjust the pfn to stabilize the dose pulse = higher then lower ( dose pulse drops from 5 to 2.5 volts) If not I'll get dose rate errors on 15x and 6,9,and 12 e....6X and higher electrons are ok and require no adjustments... Symptom takes a couple of hours to happen but are very consistent.. To date I have replaced the Fc # 4 beam control..F/D converters #3,4 ( G32)....Trigger A...B...Klystron Interface pcb...and master clock I have monitored the pfn voltage on the klystron interface pcb (tp4) and consistently fluctuates approx. .1 to .15 volts higher and lower to cause the dose rate errors (15x-1.25 volts ok however will drift to 1.35 volts -dose rates) And so it goes I adjust the pfn higher then lower changing parts as I go and I have found my self thinking about blowing up this thing ... a couple of times...just kidden..hhmmmmm So is there some feedback coming back from the modulator that can be affecting / causing this problem... ps..I have also adjusted the filament voltage / and RF input from 40 watts to 60 to 80 and back to 60 with no change.. All power supplies have been monitored and appear stable .. Any ideas..I'll share the result with the list of course.. thanks Kevin DISCLAIMER: This electronic message, including any attachments, is confidential and intended solely for use of the intended recipient(s). This message may contain information that is privileged or otherwise protected from disclosure by applicable law. Any unauthorized disclosure, dissemination, use or reproduction is strictly prohibited. If you have received this message in error, please delete it and notify the sender immediately. --Boundary_(ID_Y3RALCVkvuIjHDLHdJAMUw) Content-type: text/html; charset=ISO-8859-1 Message
This sounds like a problem I had with the high voltage divider that feeds the DeQ circuits in another brand of machine.  Had bad resistors, one open and one only partially cracked.  They changed as they heated up, showed wrong values when tested with a power supply.  Old carbon composition resistors were known for this kind of instability when used in HV applications.  Does KD2 have ordinary DEQ or the newer flyback system that I see in the Primus I have?
    Changes in pulse width or relative timing have caught me by surprise sometimes. 
Jerry
-----Original Message-----
From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Martin, Kevin
Sent: Thursday, June 10, 2004 10:08 AM
To: linac-eng@plato.aristotle.net
Subject: FW: Siemens fluctuating PFN...


 
Dear lurkers:
I have a KD-2 with 6 - 15X....5 thru 21e
Twice a day I have to adjust the pfn to stabilize the dose pulse = higher then lower (  dose pulse drops from 5 to 2.5 volts)  If not I'll get dose rate errors on  
 15x and 6,9,and 12 e....6X and higher electrons are ok and require no adjustments...
Symptom takes a couple of hours to happen but are very consistent..
To date I have replaced the Fc # 4 beam control..F/D converters #3,4 ( G32)....Trigger A...B...Klystron Interface pcb...and master clock
I have monitored the pfn voltage on the klystron interface pcb (tp4) and consistently fluctuates approx. .1 to .15 volts higher and lower to cause the dose rate errors
(15x-1.25 volts ok however will drift to 1.35 volts -dose rates)
And so it goes I adjust the pfn higher then lower changing parts as I go and I have found my self thinking about blowing up  this thing  ... a couple of times...just kidden..hhmmmmm
So is there some feedback coming back from the modulator that can be affecting / causing this problem...
ps..I have also adjusted the filament voltage / and RF input from 40 watts to 60   to 80 and back to 60 with no change.. 
All power supplies have been monitored and appear stable .. 
 
Any ideas..I'll share the result with the list of course..
 thanks   Kevin

DISCLAIMER:
This electronic message, including any attachments, is confidential and intended solely for use of the intended recipient(s). This message may contain information that is privileged or otherwise protected from disclosure by applicable law. Any unauthorized disclosure, dissemination, use or reproduction is strictly prohibited. If you have received this message in error, please delete it and notify the sender immediately.

--Boundary_(ID_Y3RALCVkvuIjHDLHdJAMUw)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HZ300B6YVXHP4@hubbard.azu.nl>; Thu, 10 Jun 2004 20:41:45 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004061020413800726 ; Thu, 10 Jun 2004 20:41:38 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id UAA10092; Thu, 10 Jun 2004 20:42:11 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma010064; Thu, 10 Jun 2004 20:42:02 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id MAA13280 for linac-eng-list; Thu, 10 Jun 2004 12:01:12 -0500 (CDT) Received: from lhsc.on.ca (ironmail.lhsc.on.ca [142.158.10.115]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id MAA13276 for ; Thu, 10 Jun 2004 12:01:10 -0500 (CDT) Received: from ([142.158.2.40]) by ironmail.lhsc.on.ca with ESMTP ; Thu, 10 Jun 2004 13:00:13 -0400 Received: from mail.lrcc.on.ca (mail.lrcc.on.ca [142.158.120.242]) by mailhub.lhsc.on.ca (8.12.10+Sun/8.12.10) with SMTP id i5AH0CME000436; Thu, 10 Jun 2004 13:00:13 -0400 (EDT) Received: by mail.lrcc.on.ca(Lotus SMTP MTA v4.6.7 (934.1 12-30-1999)) id 85256EAF.005D6DC7 ; Thu, 10 Jun 2004 13:00:29 -0400 Date: Thu, 10 Jun 2004 13:00:24 -0400 From: Randy.McVittie@lrcc.on.ca Subject: Re: RF rotary joint repair Sender: owner-linac-eng@plato.aristotle.net To: Stephen Jordan Cc: linac-eng@plato.aristotle.net Message-id: <85256EAF.005D6BDD.00@mail.lrcc.on.ca> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Content-disposition: inline Precedence: bulk X-Lotus-FromDomain: LRCC X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 10 Jun 2004 13:00:24 -0400 From: Randy.McVittie@lrcc.on.ca Subject: Re: RF rotary joint repair Sender: owner-linac-eng@plato.aristotle.net To: Stephen Jordan Cc: linac-eng@plato.aristotle.net Content-disposition: inline X-Lotus-FromDomain: LRCC X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f I guess it can happen, since Varian does include the tool for that big retaining clip. I have never had to do anything with it though. I think it would be a real bear of a problem to get in there and work around all of the cables, plumbing etc. What are your symptoms? Are you getting an SF6 leak there? Randy McVittie ----------------------------------------- This information is directed in confidence solely to the person named above and may contain confidential and/or privileged material. This information may not otherwise be distributed, copied or disclosed. If you have received this e-mail in error, please notify the sender immediately via a return e-mail and destroy original message. Thank you for your cooperation.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HZ3009XZWOUVQ@hubbard.azu.nl>; Thu, 10 Jun 2004 20:58:16 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004061020581401045 ; Thu, 10 Jun 2004 20:58:14 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id UAA12215; Thu, 10 Jun 2004 20:58:46 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xmac12144; Thu, 10 Jun 2004 20:58:24 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id MAA14335 for linac-eng-list; Thu, 10 Jun 2004 12:25:50 -0500 (CDT) Received: from jccmx1.hrcc.on.ca (jccmx1.hrcc.on.ca [199.212.121.21]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id MAA14331 for ; Thu, 10 Jun 2004 12:25:48 -0500 (CDT) Received: from hrccex.hrcc.on.ca (hrccex.hrcc.on.ca [142.21.246.25]) by jccmx1.hrcc.on.ca (Postfix) with ESMTP id 7926D41C1; Thu, 10 Jun 2004 13:27:11 -0400 (EDT) Received: by hrccex.hrcc.on.ca with Internet Mail Service (5.5.2653.19) id ; Thu, 10 Jun 2004 13:24:42 -0400 Date: Thu, 10 Jun 2004 13:24:41 -0400 From: "Lapenna, Russ" Subject: RE: RF rotary joint repair Sender: owner-linac-eng@plato.aristotle.net To: "'Randy.McVittie@lrcc.on.ca'" , Stephen Jordan Cc: linac-eng@plato.aristotle.net Message-id: <9C688FB52A05D51194750002B325B5F703A27887@hrccex.hrcc.on.ca> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 10 Jun 2004 13:24:41 -0400 From: "Lapenna, Russ" Subject: RE: RF rotary joint repair Sender: owner-linac-eng@plato.aristotle.net To: "'Randy.McVittie@lrcc.on.ca'" , Stephen Jordan Cc: linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f We've had it done here once before, I don't have details of the o-ring required, but you need to remove the whole assembly and do it on a bench. I remember we were going to try it ourselves but when we saw the size of the task and realized the risk of it still leaking after we were done, we decided to send it to a third party that has a bench test jig for that setup. Russ > -----Original Message----- > From: Randy.McVittie@lrcc.on.ca [mailto:Randy.McVittie@lrcc.on.ca] > Sent: Thursday, June 10, 2004 1:00 PM > To: Stephen Jordan > Cc: linac-eng@plato.aristotle.net > Subject: Re: RF rotary joint repair > > > > > I guess it can happen, since Varian does include the tool for > that big retaining > clip. I have never had to do anything with it though. > I think it would be a real bear of a problem to get in there > and work around all > of the cables, plumbing etc. > > What are your symptoms? > Are you getting an SF6 leak there? > > Randy McVittie > > > > ----------------------------------------- > This information is directed in confidence solely to the > person named above and may contain confidential and/or > privileged material. This information may not otherwise be > distributed, copied or disclosed. If you have received this > e-mail in error, please notify the sender immediately via a > return e-mail and destroy original message. Thank you for > your cooperation. > This information is directed in confidence solely to the person named above and may not otherwise be distributed, copied or disclosed. Therefore, this information should be considered strictly confidential. If you have received this email in error, please notify the sender immediately via a return email for further direction. Thank you for your assistance.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HZ400GWX16QV7@hubbard.azu.nl>; Thu, 10 Jun 2004 22:35:18 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004061022351302760 ; Thu, 10 Jun 2004 22:35:13 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id WAA23467; Thu, 10 Jun 2004 22:35:46 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma023436; Thu, 10 Jun 2004 22:35:19 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id NAA16242 for linac-eng-list; Thu, 10 Jun 2004 13:51:31 -0500 (CDT) Received: from phsornt422.or.providence.org (phsor-nat2.providence.org [170.220.2.14]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id NAA16238 for ; Thu, 10 Jun 2004 13:51:30 -0500 (CDT) Received: from PickupDirectory by phsornt422.or.providence.org with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2653.13) id LY4K6J3Z; Thu, 10 Jun 2004 11:47:45 -0700 Received: from phsorcon06.or.providence.org ([170.220.78.187]) by phsornt422.or.providence.org with Microsoft SMTPSVC(5.0.2195.6713); Thu, 10 Jun 2004 11:47:44 -0700 Received: from phsormsg02.or.providence.org ([170.220.75.191]) by phsorcon06.or.providence.org with Microsoft SMTPSVC(5.0.2195.6713); Thu, 10 Jun 2004 11:48:45 -0700 Date: Thu, 10 Jun 2004 11:48:45 -0700 From: Gary.Stober@providence.org Subject: RE: RF rotary joint repair Sender: owner-linac-eng@plato.aristotle.net To: srjordan@uabmc.edu, linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 8bit Importance: normal Precedence: bulk X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 content-class: urn:content-classes:message Thread-Topic: RF rotary joint repair Thread-Index: AcRPCl7jJESCsVHJRq6YkBMtkiSFywADoZwg X-OriginalArrivalTime: 10 Jun 2004 18:48:45.0624 (UTC) FILETIME=[8F11DB80:01C44F1B] X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id NAA16239 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 10 Jun 2004 11:48:45 -0700 From: Gary.Stober@providence.org Subject: RE: RF rotary joint repair Sender: owner-linac-eng@plato.aristotle.net To: srjordan@uabmc.edu, linac-eng@plato.aristotle.net Importance: normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 content-class: urn:content-classes:message Thread-Topic: RF rotary joint repair Thread-Index: AcRPCl7jJESCsVHJRq6YkBMtkiSFywADoZwg X-OriginalArrivalTime: 10 Jun 2004 18:48:45.0624 (UTC) FILETIME=[8F11DB80:01C44F1B] X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id NAA16239 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f We replaced the o-ring for a gas leak once. We removed the joint and tore it down on the bench. Apparently there are two types of joint that use different o-rings. Our o-ring had a 4 lobed cross section. It looked a little like 4 smaller o-rings that were glued together, but I don't think that's how it was manufactured. With the o-ring installed in a square cross section, it has two points of contact on each side of the square, instead of one with a conventional o-ring. It worked fine for maybe 6 months, then started leaking a lot, so we replaced the joint. Don't think I'd go the o-ring route again. Goog luck. - Gary Stober Clinical Engineering Providence St. Vincent Medical Center 9205 SW Barnes Road Portland, OR 97225 (503) 216-2988 (503) 216-2972 (Fax) mailto:Gary.Stober@providence.org -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Stephen Jordan Sent: Thursday, June 10, 2004 8:52 AM To: linac-eng@plato.aristotle.net Subject: RF rotary joint repair I have heard of cases in which engineers replaced the o-ring(s) in the rotary joint due to leaking. Does anyone have any information on this regarding o-ring size and material? Thanks in adavnce! Steve Jordan UAB Rad Physics DISCLAIMER: This message is intended for the sole use of the addressee, and may contain information that is privileged, confidential and exempt from disclosure under applicable law. If you are not the addressee you are hereby notified that you may not use, copy, disclose, or distribute to anyone the message or any information contained in the message. If you have received this message in error, please immediately advise the sender by reply email and delete this message.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HZ40031O7SMS0@hubbard.azu.nl>; Fri, 11 Jun 2004 00:58:00 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004061100575704893 ; Fri, 11 Jun 2004 00:57:57 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id AAA08792; Fri, 11 Jun 2004 00:58:30 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma008783; Fri, 11 Jun 2004 00:58:20 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id QAA22147 for linac-eng-list; Thu, 10 Jun 2004 16:06:01 -0500 (CDT) Received: from mail5.hs.uab.edu (msgmail5.hs.uab.edu [164.111.99.114]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id QAA22143 for ; Thu, 10 Jun 2004 16:05:59 -0500 (CDT) Received: from msgia.hs.uab.edu not authenticated [10.20.2.43] by mail5.hs.uab.edu with NetMail SMTP Agent $Revision: 3.22.1.13 $ on Novell NetWare; Thu, 10 Jun 2004 16:04:53 -0500 Received: from INET-MTA by msgia.hs.uab.edu with Novell_GroupWise; Thu, 10 Jun 2004 16:04:53 -0500 Date: Thu, 10 Jun 2004 16:04:43 -0500 From: Stephen Jordan Subject: Rotary joint repair Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.5.1 Content-type: text/plain; charset=US-ASCII Content-disposition: inline Content-transfer-encoding: 7bit Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 10 Jun 2004 16:04:43 -0500 From: Stephen Jordan Subject: Rotary joint repair Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Content-disposition: inline X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Thanks for all the help, folks. Looks like it's the semi-rigid guide section at the output of the rotary joint, instead. (whew!) It would only leak when the cabling would lean on it. Time to re-dress the cables. Steve  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HZ4005IJ88BLJ@hubbard.azu.nl>; Fri, 11 Jun 2004 01:07:26 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004061101072204963 ; Fri, 11 Jun 2004 01:07:22 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id BAA09386; Fri, 11 Jun 2004 01:07:55 +0200 (MET DST) Received: from caviar.isi.uu.nl(131.211.144.138) by armstrong.azu.nl via smap (V1.3) id xma009374; Fri, 11 Jun 2004 01:07:39 +0200 Received: from chouffe.radth.ruu.nl (chouffe.radth.ruu.nl [131.211.145.4]) by caviar.isi.uu.nl (Postfix) with ESMTP id B0CE511131E; Fri, 11 Jun 2004 01:04:26 +0200 (METDST) Received: from (caviar.isi.uu.nl) [131.211.144.138] by chouffe.radth.ruu.nl with esmtp (Exim 3.35 #1 (Debian)) id 1BYYWI-00059s-00; Fri, 11 Jun 2004 00:59:38 +0200 Received: from c-24-1-42-48.client.comcast.net (c-24-1-42-48.client.comcast.net [24.1.42.48]) by caviar.isi.uu.nl (Postfix) with SMTP id 287AF11131E; Fri, 11 Jun 2004 01:04:23 +0200 (METDST) Received: from 244.56.44.212 by web024.mail.yahoo.com; Thu, 10 Jun 2004 18:03:59 -0600 Date: Fri, 11 Jun 2004 06:00:59 +0600 From: Gerry Guevara Subject: Brand-models of notebooks kelvin To: kok@radth.ruu.nl, kotte@radth.ruu.nl, r.exterkate@radth.ruu.nl, ramesh@radth.ruu.nl, ric@radth.ruu.nl Message-id: MIME-version: 1.0 Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: quoted-printable *** EOOH *** Date: Fri, 11 Jun 2004 06:00:59 +0600 From: Gerry Guevara Subject: Brand-models of notebooks kelvin To: kok@radth.ruu.nl, kotte@radth.ruu.nl, r.exterkate@radth.ruu.nl, ramesh@radth.ruu.nl, ric@radth.ruu.nl ----768576322654620

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a[5 ----768576322654620--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HZ400CFICGGVK@hubbard.azu.nl>; Fri, 11 Jun 2004 02:38:43 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004061102384005953 ; Fri, 11 Jun 2004 02:38:40 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id CAA16602; Fri, 11 Jun 2004 02:39:13 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma016577; Fri, 11 Jun 2004 02:38:50 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id RAA24069 for linac-eng-list; Thu, 10 Jun 2004 17:59:21 -0500 (CDT) Received: from web25304.mail.ukl.yahoo.com (web25304.mail.ukl.yahoo.com [217.12.10.76]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id RAA24062 for ; Thu, 10 Jun 2004 17:59:18 -0500 (CDT) Received: from [203.109.249.136] by web25304.mail.ukl.yahoo.com via HTTP; Thu, 10 Jun 2004 23:58:47 +0100 (BST) Date: Thu, 10 Jun 2004 23:58:47 +0100 (BST) From: =?iso-8859-1?q?pankaj=20roy?= Subject: Re: Linac - electricians In-reply-to: <2FC7DBCD6D6AD611AD7B0090278CABAEE79E9A@CAL030> Sender: owner-linac-eng@plato.aristotle.net To: "Caunt, Peter" , "Linac Eng (E-mail)" Message-id: <20040610225847.75904.qmail@web25304.mail.ukl.yahoo.com> MIME-version: 1.0 Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 8bit Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Thu, 10 Jun 2004 23:58:47 +0100 (BST) From: =?iso-8859-1?q?pankaj=20roy?= Subject: Re: Linac - electricians In-reply-to: <2FC7DBCD6D6AD611AD7B0090278CABAEE79E9A@CAL030> Sender: owner-linac-eng@plato.aristotle.net To: "Caunt, Peter" , "Linac Eng (E-mail)" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hi all, Keep it simple----- In a world of specialists, an "Electrician" or "Electronics" person is a specialist who deals with Electricity or Electronics. HOWEVER, A Linac Engineer is specialist who deals with---- PROBABILITY, ELECTRICITY (HV and LV), ELECTRONICS ( Digital and Analog), DIGITAL CONTROLS, SOFTWARE & FIRMWARE, BUGS, MECHANICS and SAFETY, BEHAVIOUR of GASES, HYDRAULICS, MICROWAVE, OPTICS and LENSES, OPTOELECTRONICS, THERMODYNAMICS , IMAGE QUALITY, THEORY of X-RADIATION and its RELATIONSHIP TO THE REAL WORLD, EFFECTS OF RADIATION on ELECTRONICS and COMMUNICATIONS. +++++ UNDOCUMENTED PAST EXPERIENCE. (And not to forget---A potentiometer's behaviour as per Heisenberg's uncertainty principle). If any other specialist is willing to pick up these threads, he would be most welcome to the Linac Engineers fraternity. This is what has to be presented to the bureaucrats. They can hire anyone with the above characteristics. Best of Luck, Pankaj Roy Liverpool Australia --- "Caunt, Peter" wrote: > Listmembers, > Apologies for this > non-machine request but I believe > it is a linac-eng question. > > Had discussions recently with some government types > regarding radiotherapy > "engineering" support services and the question > posed concerns the role of a > "linac engineer" and what comparative service would > be provided if you only > had electricians on contract. > > While somewhat of a devils advocate question, it > does draw out the essential > characteristics of the job and requires an > explanation in basic terms. > > Any input to assist in preparing a response would be > appreciated. > > I will offer my email address as an option to those > who are concerned about > the relevance of the request to the linac-eng group. > > Kind Regards, > > > > Peter Caunt > Radiation Oncology > Canberra Hospital > Australia. > > Peter.Caunt@act.gov.au > > "Important: This transmission is intended only for > the use of the addressee > and may contain confidential or legally privileged > information. > If you are not the intended recipient, you are > notified that any use or > dissemination of this communication is strictly > prohibited. If you receive > this transmission in error please notify the author > immediately and delete > all copies of this transmission." > > > > ---------------------------------------------------------------------------- > ------------------------------------------ > This email, and any attachments, may be > confidential and also privileged. > If you are not the intended recipient: > Please notify the sender and delete all copies of > this transmission along > with any attachments immediately. > You should not copy or use it for any purpose, nor > disclose its contents to > any other person. > ---------------------------------------------------------------------------- > ------------------------------------------ ___________________________________________________________ALL-NEW Yahoo! Messenger - sooooo many all-new ways to express yourself http://uk.messenger.yahoo.com  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HZ400CYHDREVK@hubbard.azu.nl>; Fri, 11 Jun 2004 03:06:51 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004061103064906221 ; Fri, 11 Jun 2004 03:06:49 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id DAA18711; Fri, 11 Jun 2004 03:07:22 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma018686; Fri, 11 Jun 2004 03:06:59 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id SAA24449 for linac-eng-list; Thu, 10 Jun 2004 18:19:33 -0500 (CDT) Received: from web25309.mail.ukl.yahoo.com (web25309.mail.ukl.yahoo.com [217.12.10.81]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id SAA24445 for ; Thu, 10 Jun 2004 18:19:32 -0500 (CDT) Received: from [203.109.249.136] by web25309.mail.ukl.yahoo.com via HTTP; Fri, 11 Jun 2004 00:19:01 +0100 (BST) Date: Fri, 11 Jun 2004 00:19:01 +0100 (BST) From: =?iso-8859-1?q?pankaj=20roy?= Subject: RE: Siemens fluctuating PFN... In-reply-to: <36298D09ED1AD311B4DC0008C7F4D4E111466498@phsexch6.partners.org> Sender: owner-linac-eng@plato.aristotle.net To: "Maddox, Buford J" , "'Martin, Kevin'" , linac-eng@plato.aristotle.net Message-id: <20040610231901.24312.qmail@web25309.mail.ukl.yahoo.com> MIME-version: 1.0 Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: 8bit Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 11 Jun 2004 00:19:01 +0100 (BST) From: =?iso-8859-1?q?pankaj=20roy?= Subject: RE: Siemens fluctuating PFN... In-reply-to: <36298D09ED1AD311B4DC0008C7F4D4E111466498@phsexch6.partners.org> Sender: owner-linac-eng@plato.aristotle.net To: "Maddox, Buford J" , "'Martin, Kevin'" , linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hello, FIRSTLY, CHECK IF THERE IS ANY CHANGE IN RF-OUT ON THE RF DRIVER (when put to internal trigger) DURING DIFFERENT TIMES--problem or no problem. Now, though you may have done this before, I would suggest starting again. Is it a beam problem or a dose problem? Hook the SCOPE---Does the amplitude of Pulse-I change or the Inj-I change (even slightly) when there is a problem . If yes---, did you try replacing the 8255 chips on the Beam F.C.-3. If already done this, and ---if the Inj-I is changing, did you check the +135V bias in the Injector. (If however the above is OK and , ON THE SCOPE, there is no change in Pulse-I or Inj-I, there may be a problem in Dose monitoring). Best of Luck, Pankaj Roy Liverpool Australia --- "Maddox, Buford J" wrote: > This sounds like a problem I had with the high > voltage divider that feeds the > DeQ circuits in another brand of machine. Had bad > resistors, one open and one > only partially cracked. They changed as they heated > up, showed wrong values > when tested with a power supply. Old carbon > composition resistors were known > for this kind of instability when used in HV > applications. Does KD2 have > ordinary DEQ or the newer flyback system that I see > in the Primus I have? > Changes in pulse width or relative timing have > caught me by surprise > sometimes. > Jerry > > -----Original Message----- > From: owner-linac-eng@plato.aristotle.net > [mailto:owner-linac-eng@plato.aristotle.net]On > Behalf Of Martin, Kevin > Sent: Thursday, June 10, 2004 10:08 AM > To: linac-eng@plato.aristotle.net > Subject: FW: Siemens fluctuating PFN... > > > > > Dear lurkers: > I have a KD-2 with 6 - 15X....5 thru 21e > Twice a day I have to adjust the pfn to stabilize > the dose pulse = higher then > lower ( dose pulse drops from 5 to 2.5 volts) If > not I'll get dose rate errors > on > 15x and 6,9,and 12 e....6X and higher electrons are > ok and require no > adjustments... > Symptom takes a couple of hours to happen but are > very consistent.. > To date I have replaced the Fc # 4 beam control..F/D > converters #3,4 ( > G32)....Trigger A...B...Klystron Interface pcb...and > master clock > I have monitored the pfn voltage on the klystron > interface pcb (tp4) and > consistently fluctuates approx. .1 to .15 volts > higher and lower to cause the > dose rate errors > (15x-1.25 volts ok however will drift to 1.35 volts > -dose rates) > And so it goes I adjust the pfn higher then lower > changing parts as I go and I > have found my self thinking about blowing up this > thing ... a couple of > times...just kidden..hhmmmmm > So is there some feedback coming back from the > modulator that can be affecting / > causing this problem... > ps..I have also adjusted the filament voltage / and > RF input from 40 watts to 60 > to 80 and back to 60 with no change.. > All power supplies have been monitored and appear > stable .. > > Any ideas..I'll share the result with the list of > course.. > thanks Kevin > > > > DISCLAIMER: > This electronic message, including any attachments, > is confidential and intended > solely for use of the intended recipient(s). This > message may contain > information that is privileged or otherwise > protected from disclosure by > applicable law. Any unauthorized disclosure, > dissemination, use or reproduction > is strictly prohibited. If you have received this > message in error, please > delete it and notify the sender immediately. > > ___________________________________________________________ALL-NEW Yahoo! Messenger - sooooo many all-new ways to express yourself http://uk.messenger.yahoo.com  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HZ400I6FE62Q6@hubbard.azu.nl>; Fri, 11 Jun 2004 03:15:40 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004061103153706320 ; Fri, 11 Jun 2004 03:15:37 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id DAA19520; Fri, 11 Jun 2004 03:16:10 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xmaa19494; Fri, 11 Jun 2004 03:15:59 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id SAA24666 for linac-eng-list; Thu, 10 Jun 2004 18:38:15 -0500 (CDT) Received: from dalwhinnie.chhlth.govt.nz ([203.163.70.2]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id SAA24662 for ; Thu, 10 Jun 2004 18:38:12 -0500 (CDT) Received: from NTCHAVIMSS (ntchavimss.chhlth.govt.nz [159.117.27.250]) by dalwhinnie.chhlth.govt.nz (8.12.10/8.12.10/SuSE Linux 0.7) with ESMTP id i5ANh0rF010167 for ; Fri, 11 Jun 2004 11:43:00 +1200 Received: from SMTPGATE.CHHLTH.GOVT.NZ ([159.117.20.14]) by NTCHAVIMSS with InterScan Messaging Security Suite; Fri, 11 Jun 2004 11:37:35 +1200 Received: from CHCH2-MTA by SMTPGATE.CHHLTH.GOVT.NZ with Novell_GroupWise; Fri, 11 Jun 2004 11:37:35 +1200 Date: Fri, 11 Jun 2004 11:37:30 +1200 From: Dave Pinchin Subject: Re: Linac - electricians Sender: owner-linac-eng@plato.aristotle.net To: Peter.Caunt@act.gov.au, linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.0.4 Content-type: text/plain; charset=US-ASCII Content-disposition: inline Content-transfer-encoding: 8bit Precedence: bulk X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id SAA24663 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 11 Jun 2004 11:37:30 +1200 From: Dave Pinchin Subject: Re: Linac - electricians Sender: owner-linac-eng@plato.aristotle.net To: Peter.Caunt@act.gov.au, linac-eng@plato.aristotle.net Content-disposition: inline X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id SAA24663 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f G'day Peter, DANGEROUS ground tread very carefully. YOUR (and my) jobs are on the line. NZ follows Aus in most of these lines of thought. A BIG thrust in the electrical industry has been absolute safety. We (Ausy & NZ electricians) require regular first aid & safety in workplace training. The hosp electricians are in a border area where their safety training is insufficient for their 'particular' roles. I remember one safety lecture where infection control was discussed and the infection control nurse was brought in. She showed us how to do a bedpan. One electrician came back with, ' That's all very well, but after I've been down in the sewers how do I clean my tools before I work in the theatre ?' So, already, the training 'requirement' is insufficient for a general hospital environment. If we roll on to the legal requirement that 'should' apply to Radiotherapy Engineers we must add a hefty dose of radiation safety training. This has totally ignored the highly technical nature of the beasts we work with. I have been actively pushing the concept of 'Specialist Linac Engineer' as a job description. We are literally irreplaceable, they need to understand this. Their line of thought is, 'Get Joe Bloggs electrical to fix the linac after he's finished sorting out the air conditioning.' It will be much cheaper for them because the hourly rate is only $50. The other fallacy in this pattern is that as Joe Bloggs Electrical will be doing the job, all holiday cover, sick leave cover, changing staff etc will be automatically covered. This does not work because Each Person who MAY respond to the repair requirement MUST be fully trained and experienced.. I have enough problem keeping experienced because the modern machine is so reliable. It would be absolutely impossible for Joe Bloggs electrician. The long term implications are obvious. Machine reliability will drop, time taken to repair a fault will increase. Here's you downtime stats. Intermittents will increase. ad hoc modifications will 'seriously compromise' patient treatments and safety. Whereas if they consider the alternative a linac specialist should be able to 'demand' what they want because they are irreplaceable. Consider Mr V's training course. How expensive is it? Add some radiation training. It all adds up. I suggest you join the RSEA immediately and then our chosen 'profession' will have a better standing. Dave >>> "Caunt, Peter" 10/06/04 18:06:19 >>> Listmembers, Apologies for this non-machine request but I believe it is a linac-eng question. Had discussions recently with some government types regarding radiotherapy "engineering" support services and the question posed concerns the role of a "linac engineer" and what comparative service would be provided if you only had electricians on contract. While somewhat of a devils advocate question, it does draw out the essential characteristics of the job and requires an explanation in basic terms. Any input to assist in preparing a response would be appreciated. I will offer my email address as an option to those who are concerned about the relevance of the request to the linac-eng group. Kind Regards, Peter Caunt Radiation Oncology Canberra Hospital Australia. Peter.Caunt@act.gov.au "Important: This transmission is intended only for the use of the addressee and may contain confidential or legally privileged information. If you are not the intended recipient, you are notified that any use or dissemination of this communication is strictly prohibited. If you receive this transmission in error please notify the author immediately and delete all copies of this transmission." ---------------------------------------------------------------------------- ------------------------------------------ This email, and any attachments, may be confidential and also privileged. If you are not the intended recipient: Please notify the sender and delete all copies of this transmission along with any attachments immediately. You should not copy or use it for any purpose, nor disclose its contents to any other person. ---------------------------------------------------------------------------- ------------------------------------------ ********************************************************************** This email and attachments have been scanned for content and viruses and is believed to be clean This email or attachments may contain confidential or legally privileged information intended for the sole use of the addressee(s). Any use, redistribution, disclosure, or reproduction of this message, except as intended, is prohibited. If you received this email in error, please notify the sender and remove all copies of the message, including any attachments. Any views or opinions expressed in this email (unless otherwise stated) may not represent those of Canterbury District Health Board **********************************************************************  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HZ500D7YDUET5@hubbard.azu.nl>; Fri, 11 Jun 2004 16:06:16 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004061116061325467 ; Fri, 11 Jun 2004 16:06:13 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id QAA08880; Fri, 11 Jun 2004 16:06:46 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma008732; Fri, 11 Jun 2004 16:06:02 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id HAA01860 for linac-eng-list; Fri, 11 Jun 2004 07:15:12 -0500 (CDT) Received: from mail.spectrum-health.org (mail.spectrum-health.org [167.73.110.31]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id HAA01856 for ; Fri, 11 Jun 2004 07:15:10 -0500 (CDT) Received: from dcntmta02.spectrum-health.org ([10.3.5.109]) by mail.spectrum-health.org (SMSSMTP 4.0.0.59) with SMTP id M2004061108153228895 ; Fri, 11 Jun 2004 08:15:32 -0400 Received: by dcntmta02.spectrum-health.org with Internet Mail Service (5.5.2658.3) id ; Fri, 11 Jun 2004 08:14:38 -0400 Date: Fri, 11 Jun 2004 08:14:40 -0400 From: neville.wiles@spectrum-health.org Subject: RE: Linac - electricians Sender: owner-linac-eng@plato.aristotle.net To: Michael.Tirabassi@HCAHealthcare.com, Peter.Caunt@act.gov.au Cc: linac-eng@plato.aristotle.net Message-id: <69CF5FC5BF741642A2F1889E6519E2F864CE7C@dcmsmsg03.spectrum-health.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2658.3) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_80zopz0BBhWVYwfvhW5iBw)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 11 Jun 2004 08:14:40 -0400 From: neville.wiles@spectrum-health.org Subject: RE: Linac - electricians Sender: owner-linac-eng@plato.aristotle.net To: Michael.Tirabassi@HCAHealthcare.com, Peter.Caunt@act.gov.au Cc: linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_80zopz0BBhWVYwfvhW5iBw) Content-type: text/plain; charset=iso-8859-1 Its their unit but tell them you want a lot more money to come back and put it back together. -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Tirabassi Michael Sent: Thursday, June 10, 2004 10:04 AM To: 'Caunt, Peter' Cc: Linac list (E-mail) Subject: RE: Linac - electricians Are you asking if it would be appropriate for an electrician to work on a linac? Before I got into the medical field I worked 8.5 years as an industrial/commercial electrician. Therefore I feel somewhat qualified to comment on this question. All electricians are not created equal. Having said that, I certainly know that an individual who is an electrician could possess the understanding and capability to "service" a linac. Someone with motor control, high voltage, process controller experience etc.Someone whose background would help them understand the workings of a linac. But as we used to say & I have witnessed personally, some "electricians" know just enough to be dangerous! Considering the "nature" of a linac I would think that the role of a general "electrician" in regards to servicing a linac would stop at the ac line inputs in the modulator. Mike T. Rapides Cancer Center -----Original Message----- From: Caunt, Peter [mailto:Peter.Caunt@act.gov.au] Sent: Thursday, June 10, 2004 1:06 AM To: Linac Eng (E-mail) Subject: Linac - electricians Listmembers, Apologies for this non-machine request but I believe it is a linac-eng question. Had discussions recently with some government types regarding radiotherapy "engineering" support services and the question posed concerns the role of a "linac engineer" and what comparative service would be provided if you only had electricians on contract. While somewhat of a devils advocate question, it does draw out the essential characteristics of the job and requires an explanation in basic terms. Any input to assist in preparing a response would be appreciated. I will offer my email address as an option to those who are concerned about the relevance of the request to the linac-eng group. Kind Regards, Peter Caunt Radiation Oncology Canberra Hospital Australia. Peter.Caunt@act.gov.au "Important: This transmission is intended only for the use of the addressee and may contain confidential or legally privileged information. If you are not the intended recipient, you are notified that any use or dissemination of this communication is strictly prohibited. If you receive this transmission in error please notify the author immediately and delete all copies of this transmission." ---------------------------------------------------------------------------- ------------------------------------------ This email, and any attachments, may be confidential and also privileged. If you are not the intended recipient: Please notify the sender and delete all copies of this transmission along with any attachments immediately. You should not copy or use it for any purpose, nor disclose its contents to any other person. ---------------------------------------------------------------------------- ------------------------------------------ --Boundary_(ID_80zopz0BBhWVYwfvhW5iBw) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: quoted-printable RE: Linac - electricians

Its their unit but tell them you want a lot more = money to come back and put it back together.

-----Original Message-----
From: owner-linac-eng@plato.aristotle.net
[mailto:owner-linac-e= ng@plato.aristotle.net]On Behalf Of Tirabassi
Michael
Sent: Thursday, June 10, 2004 10:04 AM
To: 'Caunt, Peter'
Cc: Linac list (E-mail)
Subject: RE: Linac - electricians


Are you asking if it would be appropriate for an = electrician to work on a
linac?

Before I got into the medical field I worked 8.5 = years as an
industrial/commercial electrician. Therefore I feel = somewhat qualified to
comment on this question. All electricians are not = created equal. Having
said that, I certainly know that an individual who = is an electrician could
possess the understanding and capability to = "service" a linac. Someone with
motor control, high voltage, process controller = experience etc.Someone whose
background would help them understand the workings = of a linac. But as we
used to say & I have witnessed personally, some = "electricians" know just
enough to be dangerous!
Considering the "nature" of a linac I = would think that the role of a general
"electrician" in regards to servicing a = linac would stop at the ac line
inputs in the modulator.



Mike T.
Rapides Cancer Center


-----Original Message-----
From: Caunt, Peter [mailto:Peter.Caunt@act.gov.au= ]
Sent: Thursday, June 10, 2004 1:06 AM
To: Linac Eng (E-mail)
Subject: Linac - electricians


Listmembers,
          &nb= sp;           &nb= sp; Apologies for this non-machine request but I believe
it is a linac-eng question.

Had discussions recently with some government types = regarding radiotherapy
"engineering" support services and the = question posed concerns the role of a
"linac engineer" and what comparative = service would be provided if you only
had electricians on contract.

While somewhat of a devils advocate question, it does = draw out the essential
characteristics of the job and requires an = explanation in basic terms.

Any input to assist in preparing a response would be = appreciated.

I will offer my email address as an option to those = who are concerned about
the relevance of the request to the linac-eng = group.

Kind Regards,



Peter Caunt
Radiation Oncology
Canberra Hospital
Australia.

Peter.Caunt@act.gov.au

"Important: This transmission is intended only = for the use of the addressee
and may contain confidential or legally privileged = information.
If you are not the intended recipient, you are = notified that any use or
dissemination of this communication is strictly = prohibited.  If you receive
this transmission in error please notify the author = immediately and delete
all copies of this transmission."

 

---------------------------------------------------------------= -------------
------------------------------------------
 This email, and any attachments, may be = confidential and also privileged.
If you are not the intended recipient:
Please notify the sender and delete all copies of = this transmission along
with any attachments immediately.
You should not copy or use it for any purpose, nor = disclose its contents to
any other person.
---------------------------------------------------------------= -------------
------------------------------------------

--Boundary_(ID_80zopz0BBhWVYwfvhW5iBw)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HZ500LFMHU3XV@hubbard.azu.nl>; Fri, 11 Jun 2004 17:32:29 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004061117322728213 ; Fri, 11 Jun 2004 17:32:27 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id RAA23922; Fri, 11 Jun 2004 17:33:00 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma023891; Fri, 11 Jun 2004 17:32:37 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id IAA03276 for linac-eng-list; Fri, 11 Jun 2004 08:48:29 -0500 (CDT) Received: from ks09p04.kgh.kari.net (kghmail.kgh.kari.net [207.35.220.4]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id IAA03272 for ; Fri, 11 Jun 2004 08:48:27 -0500 (CDT) Received: from ks04p01.kgh.on.ca [10.40.69.151] by ks09p04.kgh.kari.net - SurfControl E-mail Filter (4.7); Fri, 11 Jun 2004 09:45:35 -0400 Date: Fri, 11 Jun 2004 09:45:34 -0400 From: "Feuerstake, Tom" Subject: RE: Linac - electricians Sender: owner-linac-eng@plato.aristotle.net To: "Linac Eng (E-mail)" Message-id: <366642367C5B354197A1E0D27BC175BD439E23@KGHMAIL.KGH.ON.CA> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 8bit Precedence: bulk X-MimeOLE: Produced By Microsoft Exchange V6.0.6487.1 Content-Class: urn:content-classes:message Thread-Topic: Linac - electricians Thread-Index: AcRO0isRT2u+OCaWTeONByvMm/idlwA1/9Sg X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id IAA03273 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 11 Jun 2004 09:45:34 -0400 From: "Feuerstake, Tom" Subject: RE: Linac - electricians Sender: owner-linac-eng@plato.aristotle.net To: "Linac Eng (E-mail)" X-MimeOLE: Produced By Microsoft Exchange V6.0.6487.1 Content-Class: urn:content-classes:message Thread-Topic: Linac - electricians Thread-Index: AcRO0isRT2u+OCaWTeONByvMm/idlwA1/9Sg X-MIME-Autoconverted: from quoted-printable to 8bit by plato.aristotle.net id IAA03273 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f In Canada we have a federal regulatory agency that controls the use of radiation emitting devices, by issuing user licenses. One of these licenses is called a "license to service". Among other things, this license confirms that service personnel have adequate training to service the high- energy machines. This training must include radiation safety training, with modules intended specifically for servicing Linacs. There are other training requirements as well. I doubt very much that your electricians would have this. Perhaps your government types are concerned about the fact that you are un-licensed, that there are no standards or published qualifications for what you do, and they are looking for a solution. We all know that the technical knowledge we have far exceeds what an electrician must know to do the job, but electricians have a standard and a code to go by. What you should do is start talking to these other government types, your nuclear regulatory agency. You've got to convince them that the solution is- to license you. This move towards licensing our work is coming into place in some other countries as well. Perhaps this is a growing trend in our industry, but I can't confirm this. I'd like to hear from anyone else if they have similar situations in their own country. Regards, Tom Feuerstake Kingston, Ontario -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net] On Behalf Of Caunt, Peter Sent: June 10, 2004 2:06 AM To: Linac Eng (E-mail) Subject: Linac - electricians Listmembers, Apologies for this non-machine request but I believe it is a linac-eng question. Had discussions recently with some government types regarding radiotherapy "engineering" support services and the question posed concerns the role of a "linac engineer" and what comparative service would be provided if you only had electricians on contract. While somewhat of a devils advocate question, it does draw out the essential characteristics of the job and requires an explanation in basic terms. Any input to assist in preparing a response would be appreciated. I will offer my email address as an option to those who are concerned about the relevance of the request to the linac-eng group. Kind Regards, Peter Caunt Radiation Oncology Canberra Hospital Australia. Peter.Caunt@act.gov.au "Important: This transmission is intended only for the use of the addressee and may contain confidential or legally privileged information. If you are not the intended recipient, you are notified that any use or dissemination of this communication is strictly prohibited. If you receive this transmission in error please notify the author immediately and delete all copies of this transmission." ------------------------------------------------------------------------ ---- ------------------------------------------ This email, and any attachments, may be confidential and also privileged. If you are not the intended recipient: Please notify the sender and delete all copies of this transmission along with any attachments immediately. You should not copy or use it for any purpose, nor disclose its contents to any other person. ------------------------------------------------------------------------ ---- ------------------------------------------  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HZ50029XK4UBQ@hubbard.azu.nl>; Fri, 11 Jun 2004 18:22:11 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004061118220529202 ; Fri, 11 Jun 2004 18:22:05 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA00560; Fri, 11 Jun 2004 18:22:39 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma000500; Fri, 11 Jun 2004 18:22:07 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id JAA03905 for linac-eng-list; Fri, 11 Jun 2004 09:34:48 -0500 (CDT) Received: from ghs2kex1.ghsbtr.net ([65.198.170.38]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id JAA03901 for ; Fri, 11 Jun 2004 09:34:46 -0500 (CDT) Received: from ghs2kex1.ghsbtr.net ([64.56.20.63]) by ghs2kex1.ghsbtr.net with Microsoft SMTPSVC(5.0.2195.5329); Fri, 11 Jun 2004 09:34:15 -0500 Date: Fri, 11 Jun 2004 09:34:15 -0500 From: "Martin, Kevin" Subject: follow - up to pfn dose problems Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <2CB1E3B8FA1AA447A4231A451F5043524BE621@ip-64-56-20-63.ntg.com> MIME-version: 1.0 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_Y8e+Qoh4Kfo4aIiyV1QV2A)" Importance: normal Precedence: bulk X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 Content-Class: urn:content-classes:message Thread-Topic: follow - up to pfn dose problems thread-index: AcRPwSscvcoFCy/8Qu+xXlVrJliSgA== X-OriginalArrivalTime: 11 Jun 2004 14:34:15.0967 (UTC) FILETIME=[2C0EDAF0:01C44FC1] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 11 Jun 2004 09:34:15 -0500 From: "Martin, Kevin" Subject: follow - up to pfn dose problems Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Importance: normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 Content-Class: urn:content-classes:message Thread-Topic: follow - up to pfn dose problems thread-index: AcRPwSscvcoFCy/8Qu+xXlVrJliSgA== X-OriginalArrivalTime: 11 Jun 2004 14:34:15.0967 (UTC) FILETIME=[2C0EDAF0:01C44FC1] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This is a multi-part message in MIME format. --Boundary_(ID_Y8e+Qoh4Kfo4aIiyV1QV2A) Content-type: text/plain; charset=us-ascii Content-transfer-encoding: quoted-printable A follow-up to my problem with a fluctuating dose pulse on a Siemens KD-2 ... Last evening after eliminating all inputs going to the modulator I looked in the modulator ( Diodes , resistors, connections , corona discharge etc..) couldn't find anything..Temp. related problems can be such a B***h .....Since this problem occurs mainly with 15X and low electrons I looked at the charging side....I replaced the tetrode and low and behold the dose pulse settled down....hhmmmmm...I then replaced the thyratron chassis assy and hmmm it got much better.... I will monitor this for a couple of days but I must say it looks promising..... =20 Many thanks to all the guys that responded..with all the great info..we know that there is many solutions to these type of problems... but it's great to bounce ideas around... have a good day EH!! =20 =20 DISCLAIMER: This electronic message, including any attachments, is confidential and = intended solely for use of the intended recipient(s). This message may = contain information that is privileged or otherwise protected from = disclosure by applicable law. Any unauthorized disclosure, = dissemination, use or reproduction is strictly prohibited. If you have = received this message in error, please delete it and notify the sender = immediately. --Boundary_(ID_Y8e+Qoh4Kfo4aIiyV1QV2A) Content-type: text/html; charset=us-ascii Content-transfer-encoding: quoted-printable Message
A = follow-up to my=20 problem with a fluctuating dose pulse on a Siemens  KD-2=20 ...
Last = evening after=20 eliminating all inputs going to the modulator I looked in the=20 modulator      ( Diodes , resistors, = connections ,=20 corona discharge etc..)
couldn't find=20 anything..Temp. related problems can be such a B***h  .....Since = this=20 problem occurs mainly with 15X and low electrons I looked at the = charging=20 side....I replaced the tetrode and low and behold
the = dose pulse=20 settled down....hhmmmmm...I then replaced the thyratron chassis assy and = hmmm it=20 got much better....
I will = monitor this=20 for a couple of days but I must say it looks = promising.....
 
Many = thanks to all=20 the guys that responded..with all the great info..we know that = there is=20 many solutions to these type of problems...
but = it's great to=20 bounce ideas around...
have a = good=20 day  EH!!
 
 

DISCLAIMER= :
This electronic message, including any attachments, is confidential = and intended solely for use of the intended recipient(s). This message = may contain information that is privileged or otherwise protected from = disclosure by applicable law. Any unauthorized disclosure, = dissemination, use or reproduction is strictly prohibited. If you have = received this message in error, please delete it and notify the sender = immediately. --Boundary_(ID_Y8e+Qoh4Kfo4aIiyV1QV2A)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HZ5002OIL7HBQ@hubbard.azu.nl>; Fri, 11 Jun 2004 18:45:26 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004061118452429638 ; Fri, 11 Jun 2004 18:45:24 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id SAA03408; Fri, 11 Jun 2004 18:45:58 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma003340; Fri, 11 Jun 2004 18:45:44 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id KAA04955 for linac-eng-list; Fri, 11 Jun 2004 10:13:48 -0500 (CDT) Received: from PHSEXCHICO.MGH.HARVARD.EDU (phsexchico.mgh.harvard.edu [132.183.126.50]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id KAA04951 for ; Fri, 11 Jun 2004 10:13:46 -0500 (CDT) Received: by phsexchico.mgh.harvard.edu with Internet Mail Service (5.5.2657.72) id ; Fri, 11 Jun 2004 11:12:20 -0400 Date: Fri, 11 Jun 2004 11:12:16 -0400 From: "Maddox, Buford J" Subject: RE: Rotary joint repair Sender: owner-linac-eng@plato.aristotle.net To: 'Stephen Jordan' , linac-eng@plato.aristotle.net Message-id: <36298D09ED1AD311B4DC0008C7F4D4E11146649E@phsexch6.partners.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 11 Jun 2004 11:12:16 -0400 From: "Maddox, Buford J" Subject: RE: Rotary joint repair Sender: owner-linac-eng@plato.aristotle.net To: 'Stephen Jordan' , linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Those semi-rigid/fles guides are notorious for leaks, especially at the solder joints. We have tried resoldering, refurbished ones, and epoxy. Epoxy worked great, no leaks, but had to put it on thick. Jerry -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of Stephen Jordan Sent: Thursday, June 10, 2004 5:05 PM To: linac-eng@plato.aristotle.net Subject: Rotary joint repair Thanks for all the help, folks. Looks like it's the semi-rigid guide section at the output of the rotary joint, instead. (whew!) It would only leak when the cabling would lean on it. Time to re-dress the cables. Steve  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HZ500638MDRBT@hubbard.azu.nl>; Fri, 11 Jun 2004 19:10:46 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004061119104330010 ; Fri, 11 Jun 2004 19:10:43 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA06106; Fri, 11 Jun 2004 19:11:17 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma006077; Fri, 11 Jun 2004 19:11:12 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id KAA05255 for linac-eng-list; Fri, 11 Jun 2004 10:30:29 -0500 (CDT) Received: from PHSEXCHICI2.Partners.org (phsexchici2.partners.org [170.223.254.21]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id KAA05251 for ; Fri, 11 Jun 2004 10:30:27 -0500 (CDT) Received: by phsexchici2.partners.org with Internet Mail Service (5.5.2657.72) id ; Fri, 11 Jun 2004 11:29:50 -0400 Date: Fri, 11 Jun 2004 11:29:46 -0400 From: "Maddox, Buford J" Subject: RE: Siemens fluctuating PFN... Sender: owner-linac-eng@plato.aristotle.net To: 'pankaj roy' , "'Martin, Kevin'" , linac-eng@plato.aristotle.net Message-id: <36298D09ED1AD311B4DC0008C7F4D4E11146649F@phsexch6.partners.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Fri, 11 Jun 2004 11:29:46 -0400 From: "Maddox, Buford J" Subject: RE: Siemens fluctuating PFN... Sender: owner-linac-eng@plato.aristotle.net To: 'pankaj roy' , "'Martin, Kevin'" , linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Our local Siemens guy just solved a lot of intermittent problems this week by checking many connectors, fixing some, reseating others; some were loose. FC ones are especially prone to flakey problems. Days of glitches, none after that. 8255s are a common problem as stated. Some say the NEC version works best. We keep a lot of spares, easy thing to try. Also agree with the injector possibility. Have seen zeners and xistors go bad, lots of stress there. Be sure to use heat sink grease. Cmos tends to fail in a manner which results in intermittent behavior. Can sometimes see input or output DC levels and/or pulses that are wrong, borderline. Or if several outputs are paralleled, one may not have low enough output impedance when activated. Once spent a whole day in a conventional console, waveforms fine, occasionally wrong data in the wrong place. Finally found a glitch on the clock which is a combinational waveform from ANDing several counter outputs. it was caused by high z output on one cmos chip. Several times bad/flakey cmos chips have caused intermittent check cycle interlocks on my Primus. Typically narrow problem to a few chips, replace them, in old days when there were sockets. Jerry -----Original Message----- From: pankaj roy [mailto:pankajroy135@yahoo.co.uk] Sent: Thursday, June 10, 2004 7:19 PM To: Maddox, Buford J; 'Martin, Kevin'; linac-eng@plato.aristotle.net Subject: RE: Siemens fluctuating PFN... Hello, FIRSTLY, CHECK IF THERE IS ANY CHANGE IN RF-OUT ON THE RF DRIVER (when put to internal trigger) DURING DIFFERENT TIMES--problem or no problem. Now, though you may have done this before, I would suggest starting again. Is it a beam problem or a dose problem? Hook the SCOPE---Does the amplitude of Pulse-I change or the Inj-I change (even slightly) when there is a problem . If yes---, did you try replacing the 8255 chips on the Beam F.C.-3. If already done this, and ---if the Inj-I is changing, did you check the +135V bias in the Injector. (If however the above is OK and , ON THE SCOPE, there is no change in Pulse-I or Inj-I, there may be a problem in Dose monitoring). Best of Luck, Pankaj Roy Liverpool Australia --- "Maddox, Buford J" wrote: > This sounds like a problem I had with the high > voltage divider that feeds the > DeQ circuits in another brand of machine. Had bad > resistors, one open and one > only partially cracked. They changed as they heated > up, showed wrong values > when tested with a power supply. Old carbon > composition resistors were known > for this kind of instability when used in HV > applications. Does KD2 have > ordinary DEQ or the newer flyback system that I see > in the Primus I have? > Changes in pulse width or relative timing have > caught me by surprise > sometimes. > Jerry > > -----Original Message----- > From: owner-linac-eng@plato.aristotle.net > [mailto:owner-linac-eng@plato.aristotle.net]On > Behalf Of Martin, Kevin > Sent: Thursday, June 10, 2004 10:08 AM > To: linac-eng@plato.aristotle.net > Subject: FW: Siemens fluctuating PFN... > > > > > Dear lurkers: > I have a KD-2 with 6 - 15X....5 thru 21e > Twice a day I have to adjust the pfn to stabilize > the dose pulse = higher then > lower ( dose pulse drops from 5 to 2.5 volts) If > not I'll get dose rate errors > on > 15x and 6,9,and 12 e....6X and higher electrons are > ok and require no > adjustments... > Symptom takes a couple of hours to happen but are > very consistent.. > To date I have replaced the Fc # 4 beam control..F/D > converters #3,4 ( > G32)....Trigger A...B...Klystron Interface pcb...and > master clock > I have monitored the pfn voltage on the klystron > interface pcb (tp4) and > consistently fluctuates approx. .1 to .15 volts > higher and lower to cause the > dose rate errors > (15x-1.25 volts ok however will drift to 1.35 volts > -dose rates) > And so it goes I adjust the pfn higher then lower > changing parts as I go and I > have found my self thinking about blowing up this > thing ... a couple of > times...just kidden..hhmmmmm > So is there some feedback coming back from the > modulator that can be affecting / > causing this problem... > ps..I have also adjusted the filament voltage / and > RF input from 40 watts to 60 > to 80 and back to 60 with no change.. > All power supplies have been monitored and appear > stable .. > > Any ideas..I'll share the result with the list of > course.. > thanks Kevin > > > > DISCLAIMER: > This electronic message, including any attachments, > is confidential and intended > solely for use of the intended recipient(s). This > message may contain > information that is privileged or otherwise > protected from disclosure by > applicable law. Any unauthorized disclosure, > dissemination, use or reproduction > is strictly prohibited. If you have received this > message in error, please > delete it and notify the sender immediately. > > ___________________________________________________________ALL-NEW Yahoo! Messenger - sooooo many all-new ways to express yourself http://uk.messenger.yahoo.com  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HZB00LB86L0FG@hubbard.azu.nl>; Mon, 14 Jun 2004 19:15:07 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004061419150415906 ; Mon, 14 Jun 2004 19:15:04 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA22422; Mon, 14 Jun 2004 19:15:39 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma022327; Mon, 14 Jun 2004 19:15:04 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id HAA25019 for linac-eng-list; Mon, 14 Jun 2004 07:49:08 -0500 (CDT) Received: from sccrmhc12.comcast.net (sccrmhc12.comcast.net [204.127.202.56]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id HAA25015 for ; Mon, 14 Jun 2004 07:49:06 -0500 (CDT) Received: from 204.127.205.146 ([204.127.205.146]) by comcast.net (sccrmhc12) with SMTP id <20040614124835012002glble>; Mon, 14 Jun 2004 12:48:35 +0000 Received: from [65.31.72.48] by 204.127.205.146; Mon, 14 Jun 2004 12:48:34 +0000 Date: Mon, 14 Jun 2004 12:48:34 +0000 From: davesteimel.miro@comcast.net Subject: RE: Siemens fluctuating PFN... Sender: owner-linac-eng@plato.aristotle.net To: "Maddox, Buford J" Cc: 'pankaj roy' , "'Martin, Kevin'" , linac-eng@plato.aristotle.net Message-id: <061420041248.25301.40CD9EA0000C3461000062D52200734748019D0703D2040A03070A9B9C0A900E0B@comcast.net> MIME-version: 1.0 X-Mailer: AT&T Message Center Version 1 (May 18 2004) Content-type: TEXT/PLAIN; CHARSET=US-ASCII Precedence: bulk X-Authenticated-Sender: ZGF2ZXN0ZWltZWwubWlyb0Bjb21jYXN0Lm5ldA== X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 14 Jun 2004 12:48:34 +0000 From: davesteimel.miro@comcast.net Subject: RE: Siemens fluctuating PFN... Sender: owner-linac-eng@plato.aristotle.net To: "Maddox, Buford J" Cc: 'pankaj roy' , "'Martin, Kevin'" , linac-eng@plato.aristotle.net X-Authenticated-Sender: ZGF2ZXN0ZWltZWwubWlyb0Bjb21jYXN0Lm5ldA== X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hello Group, I have a KD-2 that kicked my butt for quite a while with this type of intermittent problem. Reference the overall schematic "Modulator Assembley, Klystron (5658166). At 'K4 CR6, To K1J2 Charging current', you will see 2 varistors Rv1 & Rv2. These are located behind the K1 power chasis, you need to swing that panel forward (DISCHARGE CAPS !) to see them. Mine were pretty toasted and making intermittent connection. Replaced them and problem solved. Good Luck, Dave Steimel MIRO Madison Heights, MI 248-563-1116 > Our local Siemens guy just solved a lot of intermittent problems this week > by checking many connectors, fixing some, reseating others; some were loose. > FC ones are especially prone to flakey problems. Days of glitches, none > after that. > 8255s are a common problem as stated. Some say the NEC version works best. > We keep a lot of spares, easy thing to try. > Also agree with the injector possibility. Have seen zeners and xistors go > bad, lots of stress there. Be sure to use heat sink grease. > Cmos tends to fail in a manner which results in intermittent behavior. Can > sometimes see input or output DC levels and/or pulses that are wrong, > borderline. Or if several outputs are paralleled, one may not have low > enough output impedance when activated. Once spent a whole day in a > conventional console, waveforms fine, occasionally wrong data in the wrong > place. Finally found a glitch on the clock which is a combinational > waveform from ANDing several counter outputs. it was caused by high z > output on one cmos chip. Several times bad/flakey cmos chips have caused > intermittent check cycle interlocks on my Primus. Typically narrow problem > to a few chips, replace them, in old days when there were sockets. > Jerry > > > -----Original Message----- > From: pankaj roy [mailto:pankajroy135@yahoo.co.uk] > Sent: Thursday, June 10, 2004 7:19 PM > To: Maddox, Buford J; 'Martin, Kevin'; linac-eng@plato.aristotle.net > Subject: RE: Siemens fluctuating PFN... > > > Hello, > > FIRSTLY, CHECK IF THERE IS ANY CHANGE IN RF-OUT ON THE > RF DRIVER (when put to internal trigger) DURING > DIFFERENT TIMES--problem or no problem. > > Now, though you may have done this before, I would > suggest starting again. > > Is it a beam problem or a dose problem? > > Hook the SCOPE---Does the amplitude of Pulse-I change > or the Inj-I change (even slightly) when there is a > problem . > > If yes---, did you try replacing the 8255 chips on the > Beam F.C.-3. > > If already done this, > > and ---if the Inj-I is changing, did you check the > +135V bias in the Injector. > > > (If however the above is OK and , ON THE SCOPE, there > is no change in Pulse-I or Inj-I, there may be a > problem in Dose monitoring). > > > Best of Luck, > Pankaj Roy > Liverpool > Australia > > > > > > > > --- "Maddox, Buford J" > wrote: > This sounds like a problem I had with the > high > > voltage divider that feeds the > > DeQ circuits in another brand of machine. Had bad > > resistors, one open and one > > only partially cracked. They changed as they heated > > up, showed wrong values > > when tested with a power supply. Old carbon > > composition resistors were known > > for this kind of instability when used in HV > > applications. Does KD2 have > > ordinary DEQ or the newer flyback system that I see > > in the Primus I have? > > Changes in pulse width or relative timing have > > caught me by surprise > > sometimes. > > Jerry > > > > -----Original Message----- > > From: owner-linac-eng@plato.aristotle.net > > [mailto:owner-linac-eng@plato.aristotle.net]On > > Behalf Of Martin, Kevin > > Sent: Thursday, June 10, 2004 10:08 AM > > To: linac-eng@plato.aristotle.net > > Subject: FW: Siemens fluctuating PFN... > > > > > > > > > > Dear lurkers: > > I have a KD-2 with 6 - 15X....5 thru 21e > > Twice a day I have to adjust the pfn to stabilize > > the dose pulse = higher then > > lower ( dose pulse drops from 5 to 2.5 volts) If > > not I'll get dose rate errors > > on > > 15x and 6,9,and 12 e....6X and higher electrons are > > ok and require no > > adjustments... > > Symptom takes a couple of hours to happen but are > > very consistent.. > > To date I have replaced the Fc # 4 beam control..F/D > > converters #3,4 ( > > G32)....Trigger A...B...Klystron Interface pcb...and > > master clock > > I have monitored the pfn voltage on the klystron > > interface pcb (tp4) and > > consistently fluctuates approx. .1 to .15 volts > > higher and lower to cause the > > dose rate errors > > (15x-1.25 volts ok however will drift to 1.35 volts > > -dose rates) > > And so it goes I adjust the pfn higher then lower > > changing parts as I go and I > > have found my self thinking about blowing up this > > thing ... a couple of > > times...just kidden..hhmmmmm > > So is there some feedback coming back from the > > modulator that can be affecting / > > causing this problem... > > ps..I have also adjusted the filament voltage / and > > RF input from 40 watts to 60 > > to 80 and back to 60 with no change.. > > All power supplies have been monitored and appear > > stable .. > > > > Any ideas..I'll share the result with the list of > > course.. > > thanks Kevin > > > > > > > > DISCLAIMER: > > This electronic message, including any attachments, > > is confidential and intended > > solely for use of the intended recipient(s). This > > message may contain > > information that is privileged or otherwise > > protected from disclosure by > > applicable law. Any unauthorized disclosure, > > dissemination, use or reproduction > > is strictly prohibited. If you have received this > > message in error, please > > delete it and notify the sender immediately. > > > > > > > > > > ___________________________________________________________ALL-NEW Yahoo! > Messenger - sooooo many all-new ways to express yourself > http://uk.messenger.yahoo.com  1,, X-Coding-System: emacs-mule-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HZB00AI7A98LB@hubbard.azu.nl>; Mon, 14 Jun 2004 20:34:23 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004061420342017772 ; Mon, 14 Jun 2004 20:34:20 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id UAA04024; Mon, 14 Jun 2004 20:34:55 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma003989; Mon, 14 Jun 2004 20:34:26 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id JAA28122 for linac-eng-list; Mon, 14 Jun 2004 09:48:49 -0500 (CDT) Received: from sccrmhc12.comcast.net (sccrmhc12.comcast.net [204.127.202.56]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id JAA28118 for ; Mon, 14 Jun 2004 09:48:48 -0500 (CDT) Received: from 204.127.205.146 ([204.127.205.146]) by comcast.net (sccrmhc12) with SMTP id <20040614144817012002kffje>; Mon, 14 Jun 2004 14:48:17 +0000 Received: from [68.41.147.77] by 204.127.205.146; Mon, 14 Jun 2004 14:48:15 +0000 Date: Mon, 14 Jun 2004 14:48:15 +0000 From: davesteimel.miro@comcast.net Subject: Re: Siemens fluctuating PFN Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net (Linac-eng POST) Message-id: <061420041448.16036.40CDBAAF000C73C000003EA42200734748019D0703D2040A03070A9B9C0A900E0B@comcast.net> MIME-version: 1.0 X-Mailer: AT&T Message Center Version 1 (May 18 2004) Content-type: TEXT/PLAIN; CHARSET=ISO-8859-1 Content-transfer-encoding: 8BIT Precedence: bulk X-Authenticated-Sender: ZGF2ZXN0ZWltZWwubWlyb0Bjb21jYXN0Lm5ldA== X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 14 Jun 2004 14:48:15 +0000 From: davesteimel.miro@comcast.net Subject: Re: Siemens fluctuating PFN Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net (Linac-eng POST) X-Authenticated-Sender: ZGF2ZXN0ZWltZWwubWlyb0Bjb21jYXN0Lm5ldA== X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hello Group, I apologize if this posts twice. I don’t see my first post appearing. I have a KD-2 that kicked my butt with an intermittent PFN problem like this one. Reference the schematic # 5658166 titled “Modulator Assy., Klystron”. At K4CR6 ‘To K1J2 Charging Current’ you can see 2 varistors Rv1 & Rv2. These components are located behind the fold down K1 Power Distribution panel in the Klystron rack. On my machine there was only one, but it was thoroughly toasted, making intermittent connection. Replaced it with a locally purchased equivalent and it resolved my PFN instability. Good Luck, Dave Steimel MIRO, Madison Hts., MI 248-563-1116  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HZB0030OXHD8K@hubbard.azu.nl>; Tue, 15 Jun 2004 04:56:03 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004061504560125606 ; Tue, 15 Jun 2004 04:56:01 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id EAA26763; Tue, 15 Jun 2004 04:56:36 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xmac26743; Tue, 15 Jun 2004 04:56:11 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id SAA11330 for linac-eng-list; Mon, 14 Jun 2004 18:21:49 -0500 (CDT) Received: from bhcpns.org (ironmail.bhcpns.org [199.190.155.93]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id SAA11326 for ; Mon, 14 Jun 2004 18:21:47 -0500 (CDT) Received: from ([10.5.30.69]) by ironmail.bhcpns.org with ESMTP ; Mon, 14 Jun 2004 18:17:31 -0500 (CDT) Date: Mon, 14 Jun 2004 18:20:34 -0500 From: lsullivan@bhcpns.org Subject: 6ex flow IL Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Lotus Notes Release 6.5.1 January 21, 2004 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_pzUAmESBUE4vClI1KTVadg)" Precedence: bulk X-MIMETrack: Serialize by Router on BHCMail1/PNS/BHC_Notes(Release 6.5.1|January 21, 2004) at 06/14/2004 06:20:35 PM, Serialize complete at 06/14/2004 06:20:35 PM X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 14 Jun 2004 18:20:34 -0500 From: lsullivan@bhcpns.org Subject: 6ex flow IL Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-MIMETrack: Serialize by Router on BHCMail1/PNS/BHC_Notes(Release 6.5.1|January 21, 2004) at 06/14/2004 06:20:35 PM, Serialize complete at 06/14/2004 06:20:35 PM X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This is a multipart message in MIME format. --Boundary_(ID_pzUAmESBUE4vClI1KTVadg) Content-type: text/plain; charset=US-ASCII Good day all... Please help!!! I have an intermittent flow interlock which seems to occur at 270 deg a couple of times a day. We use the 6ex for imrt only and when I check the flow AFC board none of the red indicator lamps are illuminated.. So far I can't duplicate by continuously rotating gantry or moving any hoses or cables. I can pinch off hose and create the Fault, I have recalibrated the flow transducers and widened the tolerances slightly but the problem seems to continue... It may happen 2 or 3 times a day or less and would appreciate any thoughts ... Serial # 729 Thanks in advance Larry Sullivan Baptist Hospital 850-469-2200 ----------------------------------------- All electronic mail communications originating from or transmitted to Baptist Health Care, Inc. are subject to monitoring. This message and the information contained in it, which may consist of electronic data attachments, are the confidential and proprietary communications of Baptist Health Care and are intended to be received only by the individual or individuals to whom the message has been addressed. If the reader of this message is not the intended recipient, please take notice that any use, copying, printing, forwarding or distribution of this message, in any form, is strictly prohibited. If you have received this message in error, please immediately notify the Baptist Health Care Privacy Officer at (850) 434-4472 and/or forward the message to hipaa@bhcpns.org and delete or destroy all copies of this message. --Boundary_(ID_pzUAmESBUE4vClI1KTVadg) Content-type: text/html; charset=US-ASCII
Good day all... Please help!!!    I have an intermittent flow interlock which seems to occur at 270 deg a couple of times a day.  We use the  6ex for imrt only

and when I check the flow AFC board none of the  red indicator lamps are illuminated.. So far I can't duplicate by continuously rotating gantry or moving

any hoses or cables. I can pinch off hose and create the Fault,  I have recalibrated the flow transducers and widened the tolerances slightly but the

problem seems to continue... It may happen 2 or 3 times a day or less and  would appreciate any thoughts ... Serial # 729



Thanks in advance
Larry Sullivan
Baptist Hospital
850-469-2200

All electronic mail communications originating from or transmitted to Baptist Health Care, Inc. are subject to monitoring. This message and the information contained in it, which may consist of electronic data attachments, are the confidential and proprietary communications of Baptist Health Care and are intended to be received only by the individual or individuals to whom the message has been addressed. If the reader of this message is not the intended recipient, please take notice that any use, copying, printing, forwarding or distribution of this message, in any form, is strictly prohibited. If you have received this message in error, please immediately notify the Baptist Health Care Privacy Officer at (850) 434-4472 and/or forward the message to hipaa@bhcpns.org and delete or destroy all copies of this message.

--Boundary_(ID_pzUAmESBUE4vClI1KTVadg)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HZC007O61V8PO@hubbard.azu.nl>; Tue, 15 Jun 2004 06:30:45 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004061506304326641 ; Tue, 15 Jun 2004 06:30:43 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id GAA04244; Tue, 15 Jun 2004 06:31:19 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma004228; Tue, 15 Jun 2004 06:30:55 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id TAA13371 for linac-eng-list; Mon, 14 Jun 2004 19:35:06 -0500 (CDT) Received: from smtpgw.nahealth.com (smtpgw.nahealth.com [207.224.163.153]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id TAA13367 for ; Mon, 14 Jun 2004 19:35:04 -0500 (CDT) Received: from nahealth.com ([10.190.10.42]) by smtpgw.nahealth.com (8.12.10/8.12.10) with ESMTP id i5F0YVBO027578 for ; Mon, 14 Jun 2004 19:34:32 -0500 (CDT) Received: from GATEWAY-MTA by nahealth.com with Novell_GroupWise; Mon, 14 Jun 2004 17:34:31 -0700 Date: Mon, 14 Jun 2004 17:34:03 -0700 From: Timothy Brown Subject: Re: Linac - electricians Sender: owner-linac-eng@plato.aristotle.net To: Peter.Caunt@act.gov.au, linac-eng@plato.aristotle.net, pankajroy135@yahoo.co.uk Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.0.2 Content-type: text/plain; charset=US-ASCII Content-disposition: inline Content-transfer-encoding: 7bit Precedence: bulk X-MessageScreenMessageID: 1087259673.704173.1070.214584 X-MessageScreenContentScore: Score of 0 assigned to Content X-MessageScreenUCEScore: Score of 0 assigned to UCE X-MessageScreen: Analyzed by IntelliReach MessageScreen(tm) http://www.intellireach.com X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Mon, 14 Jun 2004 17:34:03 -0700 From: Timothy Brown Subject: Re: Linac - electricians Sender: owner-linac-eng@plato.aristotle.net To: Peter.Caunt@act.gov.au, linac-eng@plato.aristotle.net, pankajroy135@yahoo.co.uk Content-disposition: inline X-MessageScreenMessageID: 1087259673.704173.1070.214584 X-MessageScreenContentScore: Score of 0 assigned to Content X-MessageScreenUCEScore: Score of 0 assigned to UCE X-MessageScreen: Analyzed by IntelliReach MessageScreen(tm) http://www.intellireach.com X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Good one. Tim Brown N AZ Cancer Ctr >>> pankaj roy 06/10/04 03:58PM >>> Hi all, Keep it simple----- In a world of specialists, an "Electrician" or "Electronics" person is a specialist who deals with Electricity or Electronics. HOWEVER, A Linac Engineer is specialist who deals with---- PROBABILITY, ELECTRICITY (HV and LV), ELECTRONICS ( Digital and Analog), DIGITAL CONTROLS, SOFTWARE & FIRMWARE, BUGS, MECHANICS and SAFETY, BEHAVIOUR of GASES, HYDRAULICS, MICROWAVE, OPTICS and LENSES, OPTOELECTRONICS, THERMODYNAMICS , IMAGE QUALITY, THEORY of X-RADIATION and its RELATIONSHIP TO THE REAL WORLD, EFFECTS OF RADIATION on ELECTRONICS and COMMUNICATIONS. +++++ UNDOCUMENTED PAST EXPERIENCE. (And not to forget---A potentiometer's behaviour as per Heisenberg's uncertainty principle). If any other specialist is willing to pick up these threads, he would be most welcome to the Linac Engineers fraternity. This is what has to be presented to the bureaucrats. They can hire anyone with the above characteristics. Best of Luck, Pankaj Roy Liverpool Australia --- "Caunt, Peter" wrote: > Listmembers, > Apologies for this > non-machine request but I believe > it is a linac-eng question. > > Had discussions recently with some government types > regarding radiotherapy > "engineering" support services and the question > posed concerns the role of a > "linac engineer" and what comparative service would > be provided if you only > had electricians on contract. > > While somewhat of a devils advocate question, it > does draw out the essential > characteristics of the job and requires an > explanation in basic terms. > > Any input to assist in preparing a response would be > appreciated. > > I will offer my email address as an option to those > who are concerned about > the relevance of the request to the linac-eng group. > > Kind Regards, > > > > Peter Caunt > Radiation Oncology > Canberra Hospital > Australia. > > Peter.Caunt@act.gov.au > > "Important: This transmission is intended only for > the use of the addressee > and may contain confidential or legally privileged > information. > If you are not the intended recipient, you are > notified that any use or > dissemination of this communication is strictly > prohibited. If you receive > this transmission in error please notify the author > immediately and delete > all copies of this transmission." > > > > ---------------------------------------------------------------------------- > ------------------------------------------ > This email, and any attachments, may be > confidential and also privileged. > If you are not the intended recipient: > Please notify the sender and delete all copies of > this transmission along > with any attachments immediately. > You should not copy or use it for any purpose, nor > disclose its contents to > any other person. > ---------------------------------------------------------------------------- > ------------------------------------------ ___________________________________________________________ALL-NEW Yahoo! Messenger - sooooo many all-new ways to express yourself http://uk.messenger.yahoo.com  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HZC005A9D897E@hubbard.azu.nl>; Tue, 15 Jun 2004 10:36:24 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004061510362102910 ; Tue, 15 Jun 2004 10:36:21 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id KAA19094; Tue, 15 Jun 2004 10:36:57 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma018889; Tue, 15 Jun 2004 10:36:08 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id BAA17656 for linac-eng-list; Tue, 15 Jun 2004 01:26:55 -0500 (CDT) Received: from adl0133.systems.sa.gov.au (adl0133.systems.sa.gov.au [143.216.236.20]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id BAA17652 for ; Tue, 15 Jun 2004 01:26:53 -0500 (CDT) Received: from adl0133.systems.sa.gov.au (localhost [127.0.0.1]) by adl0133.systems.sa.gov.au OUTGOING (8.12.10/8.12.7) with ESMTP id i5F6QKvx027791 for ; Tue, 15 Jun 2004 15:56:21 +0930 (CST) Received: from rahsun153.rah.sa.gov.au (mailhub.rah.sa.gov.au [10.19.241.188]) by adl0133.systems.sa.gov.au INCOMING (8.12.10/8.12.7) with ESMTP id i5F6QKIX027783 for ; Tue, 15 Jun 2004 15:56:20 +0930 (CST) Received: from mail.rah.sa.gov.au (MERCURY-1 [10.19.241.90]) by rahsun153.rah.sa.gov.au (8.12.9/8.12.8) with ESMTP id i5F6QBR1016563 for ; Tue, 15 Jun 2004 15:56:19 +0930 (CST) Received: from Spooler by mail.rah.sa.gov.au (Mercury/32 v4.01a) ID MO0023FE; Tue, 15 Jun 2004 15:56:20 +0930 Received: from spooler by mail.rah.sa.gov.au (Mercury/32 v4.01a); Tue, 15 Jun 2004 15:56:06 +0930 Date: Tue, 15 Jun 2004 15:51:54 +0930 From: Andrew Frolov Subject: Re: 6ex flow IL In-reply-to: Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <200406150626.i5F6QBR1016563@rahsun153.rah.sa.gov.au> Organization: Royal Adelaide Hospital MIME-version: 1.0 X-Mailer: Pegasus Mail for Win32 (v3.12a) Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 15 Jun 2004 15:51:54 +0930 From: Andrew Frolov Subject: Re: 6ex flow IL In-reply-to: Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Organization: Royal Adelaide Hospital X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f We have a flow interlock on our 600 c/d occasionally due to oxidation of flow sensor contacts. Seems to be very strange as there is no visible oxidation, but disconnecting and re-connecting the contacts helps eliminate the i/l for months or years. Then it comes back again. From: lsullivan@bhcpns.org To: linac-eng@plato.aristotle.net Subject: 6ex flow IL Date sent: Mon, 14 Jun 2004 18:20:34 -0500 > Good day all... Please help!!! I have an intermittent flow interlock > which seems to occur at 270 deg a couple of times a day. We use the 6ex > for imrt only > > and when I check the flow AFC board none of the red indicator lamps are > illuminated.. So far I can't duplicate by continuously rotating gantry or > moving > > any hoses or cables. I can pinch off hose and create the Fault, I have > recalibrated the flow transducers and widened the tolerances slightly but > the > > problem seems to continue... It may happen 2 or 3 times a day or less and > would appreciate any thoughts ... Serial # 729 > > > > Thanks in advance > Larry Sullivan > Baptist Hospital > 850-469-2200 > > > ----------------------------------------- > All electronic mail communications originating from or transmitted to Baptist Health Care, Inc. a re subject to monitoring. This message and the information contained in it, which may consist of e lectronic data attachments, are the confidential and proprietary communications of Baptist Health C are and are intended to be received only by the individual or individuals to whom the message has b een addressed. If the reader of this message is not the intended recipient, please take notice tha t any use, copying, printing, forwarding or distribution of this message, in any form, is strictly prohibited. If you have received this message in error, please immediately notify the Baptist Heal th Care Privacy Officer at (850) 434-4472 and/or forward the message to hipaa@bhcpns.org and delete or destroy all copies of this message. Andrew Frolov Manager, RE Royal Adelaide Hospital Tel: 61 8 8222 5674 Fax: 61 8 8222 5937 email afrolov@mail.rah.sa.gov.au  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HZC005ZQESB7E@hubbard.azu.nl>; Tue, 15 Jun 2004 11:11:20 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004061511111204705 ; Tue, 15 Jun 2004 11:11:12 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id LAA28167; Tue, 15 Jun 2004 11:11:47 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xmaa27916; Tue, 15 Jun 2004 11:10:46 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id CAA17931 for linac-eng-list; Tue, 15 Jun 2004 02:13:57 -0500 (CDT) Received: from mail22.nhs.uk (mail22.nhs.uk [62.6.139.218]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id CAA17927 for ; Tue, 15 Jun 2004 02:13:56 -0500 (CDT) Received: from [10.191.254.3] (helo=relayint2.nhs.uk) by mail22.nhs.uk with esmtp (MTC MTA) id 1Ba88L-0004bU-HR for linac-eng@plato.aristotle.net; Tue, 15 Jun 2004 08:13:25 +0100 Received: from relay.nhs.uk (194.62.42.141) by relayint2.nhs.uk (Syntegra-I2 7.0.008) id 409511E600BA3649 for linac-eng@plato.aristotle.net; Tue, 15 Jun 2004 08:13:25 +0100 Received: from ubht.swest.nhs.uk (194.101.53.2) by relay.nhs.uk (Syntegra-1 7.0.008) id 40CD9A130003F42E for linac-eng@plato.aristotle.net; Tue, 15 Jun 2004 08:13:25 +0100 Received: by ubhtfw1.ubht.swest.nhs.uk id <119044>; Tue, 15 Jun 2004 07:48:12 +0100 Date: Tue, 15 Jun 2004 08:13:12 +0100 From: "White, Malcolm" Subject: RE: 6ex flow IL Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <04Jun15.074812bst.119044@ubhtfw1.ubht.swest.nhs.uk> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: MULTIPART/MIXED; BOUNDARY="Boundary_(ID_K/w4TXExTkyiNOQx5uQ2/A)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 15 Jun 2004 08:13:12 +0100 From: "White, Malcolm" Subject: RE: 6ex flow IL Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_K/w4TXExTkyiNOQx5uQ2/A) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_0uVBnlU1gLkVYcTo+fdLog)" --Boundary_(ID_0uVBnlU1gLkVYcTo+fdLog) Content-type: text/plain; CHARSET=US-ASCII Duff Flow switch? Malcolm White -----Original Message----- From: lsullivan@bhcpns.org [mailto:lsullivan@bhcpns.org] Sent: 15 June 2004 00:21 To: linac-eng@plato.aristotle.net Subject: 6ex flow IL Good day all... Please help!!! I have an intermittent flow interlock which seems to occur at 270 deg a couple of times a day. We use the 6ex for imrt only and when I check the flow AFC board none of the red indicator lamps are illuminated.. So far I can't duplicate by continuously rotating gantry or moving any hoses or cables. I can pinch off hose and create the Fault, I have recalibrated the flow transducers and widened the tolerances slightly but the problem seems to continue... It may happen 2 or 3 times a day or less and would appreciate any thoughts ... Serial # 729 Thanks in advance Larry Sullivan Baptist Hospital 850-469-2200 --Boundary_(ID_0uVBnlU1gLkVYcTo+fdLog) Content-type: text/html
Duff Flow switch?
 
Malcolm White
-----Original Message-----
From: lsullivan@bhcpns.org [mailto:lsullivan@bhcpns.org]
Sent: 15 June 2004 00:21
To: linac-eng@plato.aristotle.net
Subject: 6ex flow IL


Good day all... Please help!!!    I have an intermittent flow interlock which seems to occur at 270 deg a couple of times a day.  We use the  6ex for imrt only

and when I check the flow AFC board none of the  red indicator lamps are illuminated.. So far I can't duplicate by continuously rotating gantry or moving

any hoses or cables. I can pinch off hose and create the Fault,  I have recalibrated the flow transducers and widened the tolerances slightly but the

problem seems to continue... It may happen 2 or 3 times a day or less and  would appreciate any thoughts ... Serial # 729



Thanks in advance
Larry Sullivan
Baptist Hospital
850-469-2200

--Boundary_(ID_0uVBnlU1gLkVYcTo+fdLog)-- --Boundary_(ID_K/w4TXExTkyiNOQx5uQ2/A)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HZC00EOCSYSAY@hubbard.azu.nl>; Tue, 15 Jun 2004 16:16:38 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004061516163419053 ; Tue, 15 Jun 2004 16:16:34 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id QAA13333; Tue, 15 Jun 2004 16:17:10 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xmaa13019; Tue, 15 Jun 2004 16:16:03 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id HAA20421 for linac-eng-list; Tue, 15 Jun 2004 07:16:14 -0500 (CDT) Received: from gizmo10bw.bigpond.com (gizmo10bw.bigpond.com [144.140.70.20]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id HAA20413 for ; Tue, 15 Jun 2004 07:16:11 -0500 (CDT) Received: (qmail 27388 invoked from network); Tue, 15 Jun 2004 12:08:39 +0000 Received: from unknown (HELO bwmam08.bigpond.com) (144.135.24.91) by gizmo10bw.bigpond.com with SMTP; Tue, 15 Jun 2004 12:08:39 +0000 Received: from cpe-144-136-120-149.nsw.bigpond.net.au ([144.136.120.149]) by bwmam08.bigpond.com(MAM REL_3_4_2a 135/12359469) with SMTP id 12359469; Tue, 15 Jun 2004 22:15:39 +1000 Date: Tue, 15 Jun 2004 22:15:36 +1000 From: Francis Tisse Subject: Siemens Convetional Mevatron S9 Card cage Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <001801c452d2$773a5d60$0600a8c0@mainiekv4itlb4> MIME-version: 1.0 X-Mailer: Microsoft Outlook Express 6.00.2720.3000 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_dSWOo3tYDQj81cEtSMbftQ)" Precedence: bulk X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2739.300 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 *** EOOH *** Date: Tue, 15 Jun 2004 22:15:36 +1000 From: Francis Tisse Subject: Siemens Convetional Mevatron S9 Card cage Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2739.300 X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f X-Priority: 3 This is a multi-part message in MIME format. --Boundary_(ID_dSWOo3tYDQj81cEtSMbftQ) Content-type: text/plain; charset=iso-8859-1 Content-transfer-encoding: quoted-printable Hi All, If any of you guys have a spare S9 card cage for sale, please contact = me. Regards, Francis Tisse --Boundary_(ID_dSWOo3tYDQj81cEtSMbftQ) Content-type: text/html; charset=iso-8859-1 Content-transfer-encoding: quoted-printable
Hi All,
 
If any of you guys have a spare S9 card = cage for=20 sale, please contact me.
 
Regards,
 
Francis = Tisse
--Boundary_(ID_dSWOo3tYDQj81cEtSMbftQ)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HZC00GKVTV0RN@hubbard.azu.nl>; Tue, 15 Jun 2004 16:35:59 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004061516354619919 ; Tue, 15 Jun 2004 16:35:46 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id QAA18125; Tue, 15 Jun 2004 16:36:22 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma018054; Tue, 15 Jun 2004 16:35:50 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id HAA20591 for linac-eng-list; Tue, 15 Jun 2004 07:34:28 -0500 (CDT) Received: from mail.spectrum-health.org (mail.spectrum-health.org [167.73.110.31]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id HAA20587 for ; Tue, 15 Jun 2004 07:34:27 -0500 (CDT) Received: from dcntmta02.spectrum-health.org ([10.3.5.109]) by mail.spectrum-health.org (SMSSMTP 4.0.0.59) with SMTP id M2004061508345028781 ; Tue, 15 Jun 2004 08:34:50 -0400 Received: by dcntmta02.spectrum-health.org with Internet Mail Service (5.5.2658.3) id ; Tue, 15 Jun 2004 08:34:00 -0400 Date: Tue, 15 Jun 2004 08:33:57 -0400 From: neville.wiles@spectrum-health.org Subject: RE: 6ex flow IL Sender: owner-linac-eng@plato.aristotle.net To: lsullivan@bhcpns.org, linac-eng@plato.aristotle.net Message-id: <69CF5FC5BF741642A2F1889E6519E2F864CE82@dcmsmsg03.spectrum-health.org> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2658.3) Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_HuT8qwIseZAOnsYan4Ez0A)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 15 Jun 2004 08:33:57 -0400 From: neville.wiles@spectrum-health.org Subject: RE: 6ex flow IL Sender: owner-linac-eng@plato.aristotle.net To: lsullivan@bhcpns.org, linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. --Boundary_(ID_HuT8qwIseZAOnsYan4Ez0A) Content-type: text/plain; CHARSET=US-ASCII If this is a Siemens Check the water line at the target in 6E it could be pinching off as the slide moves. Simply pull back the slack by the ODI of the 2 clear lines. Neville Wiles -----Original Message----- From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of lsullivan@bhcpns.org Sent: Monday, June 14, 2004 7:21 PM To: linac-eng@plato.aristotle.net Subject: 6ex flow IL Good day all... Please help!!! I have an intermittent flow interlock which seems to occur at 270 deg a couple of times a day. We use the 6ex for imrt only and when I check the flow AFC board none of the red indicator lamps are illuminated.. So far I can't duplicate by continuously rotating gantry or moving any hoses or cables. I can pinch off hose and create the Fault, I have recalibrated the flow transducers and widened the tolerances slightly but the problem seems to continue... It may happen 2 or 3 times a day or less and would appreciate any thoughts ... Serial # 729 Thanks in advance Larry Sullivan Baptist Hospital 850-469-2200 _____ All electronic mail communications originating from or transmitted to Baptist Health Care, Inc. are subject to monitoring. This message and the information contained in it, which may consist of electronic data attachments, are the confidential and proprietary communications of Baptist Health Care and are intended to be received only by the individual or individuals to whom the message has been addressed. If the reader of this message is not the intended recipient, please take notice that any use, copying, printing, forwarding or distribution of this message, in any form, is strictly prohibited. If you have received this message in error, please immediately notify the Baptist Health Care Privacy Officer at (850) 434-4472 and/or forward the message to hipaa@bhcpns.org and delete or destroy all copies of this message. --Boundary_(ID_HuT8qwIseZAOnsYan4Ez0A) Content-type: text/html
If this is a Siemens Check the water line at the target in 6E it could be pinching off as the slide moves.  Simply pull back the slack by the ODI of the 2 clear lines.
 
Neville Wiles
-----Original Message-----
From: owner-linac-eng@plato.aristotle.net [mailto:owner-linac-eng@plato.aristotle.net]On Behalf Of lsullivan@bhcpns.org
Sent: Monday, June 14, 2004 7:21 PM
To: linac-eng@plato.aristotle.net
Subject: 6ex flow IL


Good day all... Please help!!!    I have an intermittent flow interlock which seems to occur at 270 deg a couple of times a day.  We use the  6ex for imrt only

and when I check the flow AFC board none of the  red indicator lamps are illuminated.. So far I can't duplicate by continuously rotating gantry or moving

any hoses or cables. I can pinch off hose and create the Fault,  I have recalibrated the flow transducers and widened the tolerances slightly but the

problem seems to continue... It may happen 2 or 3 times a day or less and  would appreciate any thoughts ... Serial # 729



Thanks in advance
Larry Sullivan
Baptist Hospital
850-469-2200

All electronic mail communications originating from or transmitted to Baptist Health Care, Inc. are subject to monitoring. This message and the information contained in it, which may consist of electronic data attachments, are the confidential and proprietary communications of Baptist Health Care and are intended to be received only by the individual or individuals to whom the message has been addressed. If the reader of this message is not the intended recipient, please take notice that any use, copying, printing, forwarding or distribution of this message, in any form, is strictly prohibited. If you have received this message in error, please immediately notify the Baptist Health Care Privacy Officer at (850) 434-4472 and/or forward the message to hipaa@bhcpns.org and delete or destroy all copies of this message.

--Boundary_(ID_HuT8qwIseZAOnsYan4Ez0A)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HZD0039A1HCEX@hubbard.azu.nl>; Tue, 15 Jun 2004 19:20:09 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004061519200424695 ; Tue, 15 Jun 2004 19:20:04 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA15957; Tue, 15 Jun 2004 19:20:40 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma015917; Tue, 15 Jun 2004 19:20:20 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id KAA25512 for linac-eng-list; Tue, 15 Jun 2004 10:19:58 -0500 (CDT) Received: from nasvir01.nas.medcity.net (mail.nas.medcity.net [199.91.33.30]) by plato.aristotle.net (8.9.0/8.9.0) with SMTP id KAA25508 for ; Tue, 15 Jun 2004 10:19:57 -0500 (CDT) Received: from 165.214.16.65 by nasvir01.nas.medcity.net (InterScan E-Mail VirusWall NT); Tue, 15 Jun 2004 09:53:34 -0500 Received: by smtp-gw2.nas.medcity.net with Internet Mail Service (5.5.2657.72) id ; Tue, 15 Jun 2004 09:53:53 -0500 Date: Tue, 15 Jun 2004 09:52:01 -0500 From: Tirabassi Michael Subject: RE: Flow Interlock Sender: owner-linac-eng@plato.aristotle.net To: lsullivan@bhcpns.org Cc: "Linac list (E-mail)" Message-id: <39A90AC123CB9D428821E2BC273E73CD01F866DE@ftwex03.hca.corpad.net> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 15 Jun 2004 09:52:01 -0500 From: Tirabassi Michael Subject: RE: Flow Interlock Sender: owner-linac-eng@plato.aristotle.net To: lsullivan@bhcpns.org Cc: "Linac list (E-mail)" X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Morning, Used to have an old 6/100 that would give flow interlocks of the weird kind. Pressure switches were always the cause. Not sure if on a 6ex if the set up is the same but that would be the first thing I'd look at. I would jumper out one at a time to see which one was causing the intermittents. Have fun! MikeT. RCC  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HZD0067T1O9QI@hubbard.azu.nl>; Tue, 15 Jun 2004 19:24:10 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004061519240824749 ; Tue, 15 Jun 2004 19:24:08 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id TAA16381; Tue, 15 Jun 2004 19:24:44 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma016343; Tue, 15 Jun 2004 19:24:13 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id KAA25558 for linac-eng-list; Tue, 15 Jun 2004 10:23:09 -0500 (CDT) Received: from imo-m24.mx.aol.com (imo-m24.mx.aol.com [64.12.137.5]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id KAA25554 for ; Tue, 15 Jun 2004 10:23:08 -0500 (CDT) Received: from GARRYANGEL@aol.com by imo-m24.mx.aol.com (mail_out_v37_r2.6.) id y.1ce.239e7b51 (4214) for ; Tue, 15 Jun 2004 11:22:33 -0400 (EDT) Date: Tue, 15 Jun 2004 11:22:33 -0400 (EDT) From: GARRYANGEL@aol.com Subject: Looking for 2100C with MLC Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <1ce.239e7b51.2e006e39@aol.com> MIME-version: 1.0 X-Mailer: 9.0 for Windows sub 5027 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_nfsdg+AUcpw2bO3SPREQQw)" Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 15 Jun 2004 11:22:33 -0400 (EDT) From: GARRYANGEL@aol.com Subject: Looking for 2100C with MLC Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f --Boundary_(ID_nfsdg+AUcpw2bO3SPREQQw) Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7bit I am looking for a used 2100 or 21EX with MLC prefer 6 & 15 X. I will also consider a later model 2100C without MLC. Please email info. Thank you in advance. Garry --Boundary_(ID_nfsdg+AUcpw2bO3SPREQQw) Content-type: text/html; charset=US-ASCII Content-transfer-encoding: quoted-printable
I am looking for a used 2100 or 21EX with MLC prefer 6 &= amp; 15 X. I will also consider a later model 2100C without MLC. Please= email info.
 
Thank you in advance.
 
Garry
--Boundary_(ID_nfsdg+AUcpw2bO3SPREQQw)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HZD00I4A8DM5X@hubbard.azu.nl>; Tue, 15 Jun 2004 21:49:01 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004061521485628004 ; Tue, 15 Jun 2004 21:48:57 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id VAA06356; Tue, 15 Jun 2004 21:49:32 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma006325; Tue, 15 Jun 2004 21:49:12 +0200 Received: (from majordomo@localhost) by plato.aristotle.net (8.9.0/8.9.0) id MAA29017 for linac-eng-list; Tue, 15 Jun 2004 12:42:48 -0500 (CDT) Received: from mail2.tenethealth.com (mail2.tenethealth.com [199.222.14.8]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id MAA29012 for ; Tue, 15 Jun 2004 12:42:46 -0500 (CDT) Received: from tenhdcthvscan01.tenethealth.net ([172.18.167.160]) by mail2.tenethealth.com (8.11.6/8.11.6) with SMTP id i5FHgDE04318; Tue, 15 Jun 2004 12:42:13 -0500 Received: from nodnsquery(172.18.167.214) by tenhdcthvscan01.tenethealth.net via csmap id f36b1046_bef7_11d8_969f_0002b3d786fe_7290; Tue, 15 Jun 2004 13:15:15 -0500 (CDT) Received: from tenbmcthemx01.tenethealth.net ([10.30.2.48]) by tenhdcthemx53.tenethealth.net with Microsoft SMTPSVC(5.0.2195.6713); Tue, 15 Jun 2004 12:40:58 -0500 Date: Tue, 15 Jun 2004 12:40:57 -0500 From: "Kyle, John" Subject: RE: 6ex flow IL Sender: owner-linac-eng@plato.aristotle.net To: lsullivan@bhcpns.org, linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_Fpe5Icpdxwt4fx4CLg5r3A)" Precedence: bulk X-MimeOLE: Produced By Microsoft Exchange V6.0.6249.0 content-class: urn:content-classes:message Thread-Topic: 6ex flow IL Thread-Index: AcRShLfmfcOFLUtvTAiV40Sq9scozgAesZqw X-OriginalArrivalTime: 15 Jun 2004 17:40:58.0444 (UTC) FILETIME=[EAE830C0:01C452FF] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Tue, 15 Jun 2004 12:40:57 -0500 From: "Kyle, John" Subject: RE: 6ex flow IL Sender: owner-linac-eng@plato.aristotle.net To: lsullivan@bhcpns.org, linac-eng@plato.aristotle.net X-MimeOLE: Produced By Microsoft Exchange V6.0.6249.0 content-class: urn:content-classes:message Thread-Topic: 6ex flow IL Thread-Index: AcRShLfmfcOFLUtvTAiV40Sq9scozgAesZqw X-OriginalArrivalTime: 15 Jun 2004 17:40:58.0444 (UTC) FILETIME=[EAE830C0:01C452FF] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This is a multi-part message in MIME format. --Boundary_(ID_Fpe5Icpdxwt4fx4CLg5r3A) Content-type: text/plain; charset=us-ascii Content-transfer-encoding: quoted-printable I think I would replace the Flow Wheel. Maybe the angle is affecting the way it spins.=20 John Kyle=20 Coordinator=20 Technical Support Services=20 Brookwood Medical Center=20 205-877-1092=20 -----Original Message----- From: lsullivan@bhcpns.org [mailto:lsullivan@bhcpns.org]=20 Sent: Monday, June 14, 2004 6:21 PM To: linac-eng@plato.aristotle.net Subject: 6ex flow IL Good day all... Please help!!! I have an intermittent flow interlock which seems to occur at 270 deg a couple of times a day. We use the 6ex for imrt only=20 and when I check the flow AFC board none of the red indicator lamps are illuminated.. So far I can't duplicate by continuously rotating gantry or moving=20 any hoses or cables. I can pinch off hose and create the Fault, I have recalibrated the flow transducers and widened the tolerances slightly but the=20 problem seems to continue... It may happen 2 or 3 times a day or less and would appreciate any thoughts ... Serial # 729=20 Thanks in advance=20 Larry Sullivan=20 Baptist Hospital=20 850-469-2200=20 _____ =20 All electronic mail communications originating from or transmitted to Baptist Health Care, Inc. are subject to monitoring. This message and the information contained in it, which may consist of electronic data attachments, are the confidential and proprietary communications of Baptist Health Care and are intended to be received only by the individual or individuals to whom the message has been addressed. If the reader of this message is not the intended recipient, please take notice that any use, copying, printing, forwarding or distribution of this message, in any form, is strictly prohibited. If you have received this message in error, please immediately notify the Baptist Health Care Privacy Officer at (850) 434-4472 and/or forward the message to hipaa@bhcpns.org and delete or destroy all copies of this message. --Boundary_(ID_Fpe5Icpdxwt4fx4CLg5r3A) Content-type: text/html; charset=us-ascii Content-transfer-encoding: quoted-printable Message
I=20 think I would replace the Flow Wheel. Maybe the angle is affecting the = way it=20 spins.

John Kyle
Coordinator
Technical = Support=20 Services
Brookwood Medical = Center=20
205-877-1092 =

-----Original Message-----
From:=20 lsullivan@bhcpns.org [mailto:lsullivan@bhcpns.org]
Sent: = Monday,=20 June 14, 2004 6:21 PM
To:=20 linac-eng@plato.aristotle.net
Subject: 6ex flow=20 IL


Good day = all... Please=20 help!!!    I have an intermittent flow interlock which seems = to=20 occur at 270 deg a couple of times a day.  We use the  6ex = for imrt=20 only

and when I check = the flow AFC=20 board none of the  red indicator lamps are illuminated.. So far I = can't=20 duplicate by continuously rotating gantry or moving =

any hoses or cables. I can pinch off hose = and create=20 the Fault,  I have recalibrated the flow transducers and widened = the=20 tolerances slightly but the

problem seems to continue... It may happen 2 or 3 times a day = or less=20 and  would appreciate any thoughts ... Serial # 729=20



Thanks in = advance=20
Larry Sullivan
Baptist Hospital
850-469-2200=20

All electronic mail communications originating from or = transmitted=20 to Baptist Health Care, Inc. are subject to monitoring. This message = and the=20 information contained in it, which may consist of electronic data = attachments,=20 are the confidential and proprietary communications of Baptist Health = Care and=20 are intended to be received only by the individual or individuals to = whom the=20 message has been addressed. If the reader of this message is not the = intended=20 recipient, please take notice that any use, copying, printing, = forwarding or=20 distribution of this message, in any form, is strictly prohibited. If = you have=20 received this message in error, please immediately notify the Baptist = Health=20 Care Privacy Officer at (850) 434-4472 and/or forward the message to=20 hipaa@bhcpns.org and delete or destroy all copies of this=20 message.

--Boundary_(ID_Fpe5Icpdxwt4fx4CLg5r3A)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HZE003E46D22O@hubbard.azu.nl>; Wed, 16 Jun 2004 10:03:22 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004061610031808234 ; Wed, 16 Jun 2004 10:03:18 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id KAA25534; Wed, 16 Jun 2004 10:03:55 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma025403; Wed, 16 Jun 2004 10:03:32 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id BAA15097 for linac-eng-list; Wed, 16 Jun 2004 01:19:16 -0500 (CDT) Received: from pebble.orebroll.se (pebble.orebroll.se [194.103.185.215]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id BAA15093 for ; Wed, 16 Jun 2004 01:19:14 -0500 (CDT) Received: from storm.orebroll.se ([192.168.250.152]) by pebble.orebroll.se with Microsoft SMTPSVC(6.0.3790.0); Wed, 16 Jun 2004 08:18:51 +0200 Received: by storm.orebroll.se with Internet Mail Service (5.5.2653.19) id ; Wed, 16 Jun 2004 08:18:49 +0200 Date: Wed, 16 Jun 2004 08:18:39 +0200 From: terence.kearey@orebroll.se Subject: RE: 6ex flow IL Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: <959992E73874F24C846A9CEA66D10C283D1B34@rouge.orebroll.se> MIME-version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-type: text/plain; charset=iso-8859-1 Precedence: bulk X-OriginalArrivalTime: 16 Jun 2004 06:18:51.0531 (UTC) FILETIME=[CAFA9DB0:01C45369] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 16 Jun 2004 08:18:39 +0200 From: terence.kearey@orebroll.se Subject: RE: 6ex flow IL Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net X-OriginalArrivalTime: 16 Jun 2004 06:18:51.0531 (UTC) FILETIME=[CAFA9DB0:01C45369] X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Another thought is that the interlock may be due to a real reduced flow. How old is the machine? The rubber hoses become cracked on the inside and this causes increased resistance and decreases the water flow. The flow wheel gauge in the gantry can give an indication of this if you have noted the initial mV and frequency. Any time after 3 years or thereabouts is time to change the hoses. The actual time may depend on water quality. Big job, lot of fun, especially near the target, you can either see the connections or feel them, not both at the same time. A generous time for this job would be 2 days for the change and repairing everything which you break in the process - it's practically unavoidable. My rule of thumb is to change hoses when the mV reading has reduced to about half. So it's not every 3 years it gets done... Regards Tel.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HZE009SBKPN91@hubbard.azu.nl>; Wed, 16 Jun 2004 15:14:14 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004061615140420736 ; Wed, 16 Jun 2004 15:14:04 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id PAA01705; Wed, 16 Jun 2004 15:14:41 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma001585; Wed, 16 Jun 2004 15:14:17 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id GAA17841 for linac-eng-list; Wed, 16 Jun 2004 06:22:11 -0500 (CDT) Received: from NGATE01.qe2-hsc.ns.ca (mail.sacentre.nshealth.ca [142.176.37.4]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id GAA17837 for ; Wed, 16 Jun 2004 06:22:10 -0500 (CDT) Received: from sdc_dom-MTA by NGATE01.qe2-hsc.ns.ca with Novell_GroupWise; Wed, 16 Jun 2004 08:22:10 -0300 Date: Wed, 16 Jun 2004 08:22:03 -0300 From: Scott Purcell Subject: Machines avaiable Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.5.2 Beta Content-type: text/plain; charset=US-ASCII Content-disposition: inline Content-transfer-encoding: 7bit Precedence: bulk X-Guinevere: 2.0.13 ; Capital District Hea X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 16 Jun 2004 08:22:03 -0300 From: Scott Purcell Subject: Machines avaiable Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net Content-disposition: inline X-Guinevere: 2.0.13 ; Capital District Hea X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hi to all, We here at the Nova Scotia Cancer Centre have just removed a Theratronics T1000 cobalt machine and will also be removing a Philips simulator SLS later this month. If anyone is interested these pieces of equipment you can contact me at this email address or at the information below. Cheers Scott Scott Purcell, C.E.T Linear Accelerator Service Technologist Department of Medical Physics Nova Scotia Cancer Centre 5820 University Avenue Halifax, Nova Scotia Canada Email scott.purcell@cdha.nshealth.ca Phone: 902-473-2563 Fax: 902-473-6120 Confidentiality: This email message may contain confidential information and is intended only for the individual named. If you are not the named addressee you should not disseminate, distribute or copy this email. Please notify the sender immediately by email if you have received this email by mistake and delete this email from your system. Email transmissions cannot be guaranteed to be secure or error free as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or contain viruses. The sender therefore does not accept any liability for errors or omissions in the contents of this message that arise as a result of email transmissions. If verification is required please request a hard copy version.  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HZF00HBD4NDCZ@hubbard.azu.nl>; Wed, 16 Jun 2004 22:23:44 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004061622234031969 ; Wed, 16 Jun 2004 22:23:40 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id WAA08675; Wed, 16 Jun 2004 22:24:17 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma008649; Wed, 16 Jun 2004 22:24:12 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id NAA25871 for linac-eng-list; Wed, 16 Jun 2004 13:20:35 -0500 (CDT) Received: from bhcpns.org (ironmail.bhcpns.org [199.190.155.93]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id NAA25865; Wed, 16 Jun 2004 13:20:33 -0500 (CDT) Received: from ([10.5.30.69]) by ironmail.bhcpns.org with ESMTP ; Wed, 16 Jun 2004 13:15:49 -0500 (CDT) Date: Wed, 16 Jun 2004 13:18:58 -0500 From: lsullivan@bhcpns.org Subject: RE: 6ex flow IL In-reply-to: <959992E73874F24C846A9CEA66D10C283D1B34@rouge.orebroll.se> Sender: owner-linac-eng@plato.aristotle.net To: terence.kearey@orebroll.se Cc: linac-eng@plato.aristotle.net, owner-linac-eng@plato.aristotle.net Message-id: MIME-version: 1.0 X-Mailer: Lotus Notes Release 6.5.1 January 21, 2004 Content-type: MULTIPART/ALTERNATIVE; BOUNDARY="Boundary_(ID_TPstXS7FHqnSLCaCrQHDcQ)" Precedence: bulk X-MIMETrack: Serialize by Router on BHCMail1/PNS/BHC_Notes(Release 6.5.1|January 21, 2004) at 06/16/2004 01:18:58 PM, Serialize complete at 06/16/2004 01:18:58 PM X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 16 Jun 2004 13:18:58 -0500 From: lsullivan@bhcpns.org Subject: RE: 6ex flow IL In-reply-to: <959992E73874F24C846A9CEA66D10C283D1B34@rouge.orebroll.se> Sender: owner-linac-eng@plato.aristotle.net To: terence.kearey@orebroll.se Cc: linac-eng@plato.aristotle.net, owner-linac-eng@plato.aristotle.net X-MIMETrack: Serialize by Router on BHCMail1/PNS/BHC_Notes(Release 6.5.1|January 21, 2004) at 06/16/2004 01:18:58 PM, Serialize complete at 06/16/2004 01:18:58 PM X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f This is a multipart message in MIME format. --Boundary_(ID_TPstXS7FHqnSLCaCrQHDcQ) Content-type: text/plain; charset=US-ASCII To All ,, Thanks for the input I cleaned the flow sensors by removing and cleaning with mild detergent , with this I disconnected spade connectors and cleaned pins and now for second day I've not experienced and flow faults as of yet.... Since for a couple of weeks it was happening everyday this is progress... Thanks to all who replied. Larry Sullivan ----------------------------------------- All electronic mail communications originating from or transmitted to Baptist Health Care, Inc. are subject to monitoring. This message and the information contained in it, which may consist of electronic data attachments, are the confidential and proprietary communications of Baptist Health Care and are intended to be received only by the individual or individuals to whom the message has been addressed. If the reader of this message is not the intended recipient, please take notice that any use, copying, printing, forwarding or distribution of this message, in any form, is strictly prohibited. If you have received this message in error, please immediately notify the Baptist Health Care Privacy Officer at (850) 434-4472 and/or forward the message to hipaa@bhcpns.org and delete or destroy all copies of this message. --Boundary_(ID_TPstXS7FHqnSLCaCrQHDcQ) Content-type: text/html; charset=US-ASCII
To All ,, Thanks for the input I cleaned the flow sensors by removing and cleaning with mild detergent , with this I  disconnected spade connectors and cleaned pins and now for second day I've not experienced and flow faults as of yet.... Since for a couple of weeks it was happening everyday this is progress...
Thanks to all who replied.

Larry Sullivan

All electronic mail communications originating from or transmitted to Baptist Health Care, Inc. are subject to monitoring. This message and the information contained in it, which may consist of electronic data attachments, are the confidential and proprietary communications of Baptist Health Care and are intended to be received only by the individual or individuals to whom the message has been addressed. If the reader of this message is not the intended recipient, please take notice that any use, copying, printing, forwarding or distribution of this message, in any form, is strictly prohibited. If you have received this message in error, please immediately notify the Baptist Health Care Privacy Officer at (850) 434-4472 and/or forward the message to hipaa@bhcpns.org and delete or destroy all copies of this message.

--Boundary_(ID_TPstXS7FHqnSLCaCrQHDcQ)--  1,, X-Coding-System: undecided-unix Return-path: Received: from mg1003.ds.umcutrecht.nl ([143.121.182.27]) by hubbard.azu.nl (Sun Internet Mail Server sims.3.5.2000.03.23.18.03.p10) with SMTP id <0HZF0046N9EXVK@hubbard.azu.nl>; Thu, 17 Jun 2004 00:06:40 +0200 (MET DST) Received: from armstrong.azu.nl ([143.121.253.2]) by mg1003.ds.umcutrecht.nl (SAVSMTP 3.1.0.29) with SMTP id M2004061700063201088 ; Thu, 17 Jun 2004 00:06:32 +0200 Received: (from daemon@localhost) by armstrong.azu.nl (8.8.5/8.8.5) id AAA20985; Thu, 17 Jun 2004 00:07:09 +0200 (MET DST) Received: from plato.aristotle.net(206.66.224.2) by armstrong.azu.nl via smap (V1.3) id xma020959; Thu, 17 Jun 2004 00:06:41 +0200 Received: by plato.aristotle.net (8.9.0/8.9.0) id PAA28003 for linac-eng-list; Wed, 16 Jun 2004 15:10:48 -0500 (CDT) Received: from dangerfield.cancercare.mb.ca ([192.139.125.101]) by plato.aristotle.net (8.9.0/8.9.0) with ESMTP id PAA27997 for ; Wed, 16 Jun 2004 15:10:40 -0500 (CDT) Received: (from uucp@localhost) by dangerfield.cancercare.mb.ca (8.11.6+Sun/8.11.6) id i5GKA8M04214 for ; Wed, 16 Jun 2004 15:10:08 -0500 (CDT) Received: from UNKNOWN(172.18.125.27), claiming to be "Chaos.cancercare.mb.ca" via SMTP by dangerfield, id smtpdAAAnaai9h; Wed Jun 16 20:06:21 2004 Received: from CCMD01-MTA by Chaos.cancercare.mb.ca with Novell_GroupWise; Wed, 16 Jun 2004 15:06:22 -0500 Date: Wed, 16 Jun 2004 15:05:47 -0500 From: Ken Allen Subject: IR Emitters Varian MMLC Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net, canadalist@yahoogroups.com Message-id: MIME-version: 1.0 X-Mailer: Novell GroupWise Internet Agent 6.5.1 Content-type: text/plain; charset=US-ASCII Content-disposition: inline Content-transfer-encoding: 7bit Precedence: bulk X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f *** EOOH *** Date: Wed, 16 Jun 2004 15:05:47 -0500 From: Ken Allen Subject: IR Emitters Varian MMLC Sender: owner-linac-eng@plato.aristotle.net To: linac-eng@plato.aristotle.net, canadalist@yahoogroups.com Content-disposition: inline X-Authentication-warning: plato.aristotle.net: majordomo set sender to owner-linac-eng@plato.aristotle.net using -f Hello List, Is anyone have a good source for the Optical IR emitters used on the MMLC calibration? I believe it has a part number of OD-88F1 made by Opto Diode Corp. Looking preferably for a Canadian distributor if possible. Thanks for your assistance. Ken Allen Nuclear Electronics Technologist CancerCare Manitoba Winnipeg, MB, Canada