From qsun at jlab.org Tue Nov 4 14:37:27 2025 From: qsun at jlab.org (Eric Sun) Date: Tue, 4 Nov 2025 19:37:27 +0000 Subject: [Testlablcwusers] LCW Supply Temperature IS Fluctuating Now In-Reply-To: References: Message-ID: Howdy, We plan to energize MOLLER TM1 at Test Lab now. However, we notice that the LCW supply temperature is fluctuating about +-1.5 deg C. IS someone using the LCW now and dump it into the system to cause a fluctuating temperature? Please let us know ASAP. Thanks a lot Eric Sun MOLLER ________________________________ From: Testlablcwusers on behalf of Eric Sun Sent: Tuesday, October 14, 2025 10:49 AM To: testlablcwusers at jlab.org Cc: John Fischer Subject: [Testlablcwusers] We plan to ramp MOLLER TM3 now (Corrected) Howdy, My previous email was inaccurate. We will not ramp our TM3 magnet up to 4000 A. We will ramp it to 3370 A operating current. The heat that will be dumped into the LCW system will be about 110 kW. The required flow rate of LCW is 23 gallons per minute. Thanks Eric ________________________________ From: Testlablcwusers on behalf of Eric Sun Sent: Tuesday, October 14, 2025 10:36 AM To: testlablcwusers at jlab.org Subject: Re: [Testlablcwusers] We plan to ramp MOLLER TM3 to 3710 A now Howdy, We plan to continue the power-up test of MOLLER TM3 magnet at the Test Lab from morning (10:30 AM) 10/14/2025 to 10/17/2025. The testing will be on and off. We will test the magnet up to 4000 A. The maximum power consumption of the magnet is 138 kW. The required flow rate of LCW is 23 gallons per minute. If you have any concerns, please contact me ASAP. Many thanks for the attention. Cheers Eric ________________________________ From: Eric Sun Sent: Wednesday, October 1, 2025 9:56 AM To: testlablcwusers at jlab.org Subject: We plan to ramp MOLLER TM3 to 3710 A now Hi, We plan to ramp MOLLEZR TM3 to 3710 A now. The magnet will consume 138 kW. The required flow rate will be about 40 GPM. Thanks a lot Eric -------------- next part -------------- An HTML attachment was scrubbed... URL: From qsun at jlab.org Tue Nov 4 14:47:33 2025 From: qsun at jlab.org (Eric Sun) Date: Tue, 4 Nov 2025 19:47:33 +0000 Subject: [Testlablcwusers] Energizing MOLLER TM1 to 2453 A Message-ID: Howdy, We will ramp our MOLLER TM1 magnet up to 2453 A this week starting from now. We will ramp it to 2230 A operating current first. The heat that will be dumped into the LCW system is about 90 kW. The required flow rate of LCW is 10 gallons per minute. Thanks a lot for attention. Eric Sun MOLLER -------------- next part -------------- An HTML attachment was scrubbed... URL: From denny at jlab.org Wed Nov 5 07:03:08 2025 From: denny at jlab.org (Philip Denny) Date: Wed, 5 Nov 2025 12:03:08 +0000 Subject: [Testlablcwusers] Energizing MOLLER TM1 to 2453 A In-Reply-To: References: Message-ID: Hello Eric, I cannot see who is on the "testlablcwusers at jlab.org" mail list. But we need to add Mike Drury and Mike McCaughan if they are not. There is currently a CEBAF cryomodule in the test cave being tested. I cannot comment when it will be completed, nor the typical daily hours they are running the high power supply that may (most likely) is affecting the water temp. The following statement has been communicated to us: "CMTF / VTA have priority per lab management in event of conflicts. We are the long poles in the tent to maintain the CEBAF start-up schedule, which was communicated to them in their work planning document. Doug Higinbotham can mediate for the SAM planning committee in the event this becomes an issue." Hopefully between you and Mike and Mike, you can work something out as far as timing. Phil ________________________________ From: Testlablcwusers on behalf of Eric Sun Sent: Tuesday, November 4, 2025 2:47 PM To: testlablcwusers at jlab.org Cc: John Fischer Subject: [Testlablcwusers] Energizing MOLLER TM1 to 2453 A Howdy, We will ramp our MOLLER TM1 magnet up to 2453 A this week starting from now. We will ramp it to 2230 A operating current first. The heat that will be dumped into the LCW system is about 90 kW. The required flow rate of LCW is 10 gallons per minute. Thanks a lot for attention. Eric Sun MOLLER -------------- next part -------------- An HTML attachment was scrubbed... URL: From drury at jlab.org Wed Nov 5 09:00:10 2025 From: drury at jlab.org (Mike Drury) Date: Wed, 5 Nov 2025 09:00:10 -0500 Subject: [Testlablcwusers] Energizing MOLLER TM1 to 2453 A In-Reply-To: References: Message-ID: <5a97b702-b716-4901-a360-58c01fe8daf2@jlab.org> We are usually running from 9AM - 10PM weekdays.? We have a week to a week and a half of testing to do. Mike D. On 11/5/2025 7:03 AM, Philip Denny wrote: > Hello Eric, > > I cannot see who is on the "testlablcwusers at jlab.org" mail list. But > we need to add Mike Drury and Mike McCaughan if they are not. > > There is currently a CEBAF cryomodule in the test cave being tested. I > cannot comment when it will be completed, nor the typical daily hours > they are running the high power supply that may (most likely) is > affecting the water temp. > > The following statement has been communicated to us: /"C//MTF / VTA > have priority per lab management in event of conflicts. We are the > long poles in the tent to maintain the CEBAF start-up schedule, which > was communicated to them in their work planning document. Doug > Higinbotham can mediate for the SAM planning committee in the event > this becomes an issue."/ > / > / > Hopefully between you and Mike and Mike, you can work something out as > far as timing. > > Phil > / > / > / > / > > > > > ------------------------------------------------------------------------ > *From:*?Testlablcwusers on behalf > of Eric Sun > *Sent:*?Tuesday, November 4, 2025 2:47 PM > *To:* testlablcwusers at jlab.org > *Cc:*?John Fischer > *Subject:*?[Testlablcwusers] Energizing MOLLER TM1 to 2453 A > Howdy, > > We will ramp our MOLLER TM1 magnet up to 2453 A this week starting > from now. We will ramp it to 2230 A operating current first. The heat > that will be dumped into the LCW system is about 90 kW. The required > flow rate of LCW is 10 gallons per minute. > > Thanks a lot for attention. > > Eric Sun > MOLLER > -------------- next part -------------- An HTML attachment was scrubbed... URL: From qsun at jlab.org Thu Nov 6 13:19:28 2025 From: qsun at jlab.org (Eric Sun) Date: Thu, 6 Nov 2025 18:19:28 +0000 Subject: [Testlablcwusers] Energizing MOLLER TM1 to 2453 A In-Reply-To: <5a97b702-b716-4901-a360-58c01fe8daf2@jlab.org> References: <5a97b702-b716-4901-a360-58c01fe8daf2@jlab.org> Message-ID: Hi Mike, It is great to know you are usually running from 9AM - 10PM weekdays. Could you let know us your exact running dates so that we can coordinate our work with yours? We plan to perform hydrostatic pressure test of our MOLLER TM4 on 11/10. Can we use the LCW from 7:30 AM to 8:45 AM to fill our TM4 with water? After 8:45 AM, we don't need to use LCW anymore. Please let us know. Many thanks Eric ________________________________ From: Michael Drury Sent: Wednesday, November 5, 2025 9:00 AM To: Philip Denny ; Eric Sun ; testlablcwusers at jlab.org Cc: John Fischer ; Mike McCaughan Subject: Re: Energizing MOLLER TM1 to 2453 A We are usually running from 9AM - 10PM weekdays. We have a week to a week and a half of testing to do. Mike D. On 11/5/2025 7:03 AM, Philip Denny wrote: Hello Eric, I cannot see who is on the "testlablcwusers at jlab.org" mail list. But we need to add Mike Drury and Mike McCaughan if they are not. There is currently a CEBAF cryomodule in the test cave being tested. I cannot comment when it will be completed, nor the typical daily hours they are running the high power supply that may (most likely) is affecting the water temp. The following statement has been communicated to us: "CMTF / VTA have priority per lab management in event of conflicts. We are the long poles in the tent to maintain the CEBAF start-up schedule, which was communicated to them in their work planning document. Doug Higinbotham can mediate for the SAM planning committee in the event this becomes an issue." Hopefully between you and Mike and Mike, you can work something out as far as timing. Phil ________________________________ From: Testlablcwusers

on behalf of Eric Sun Sent: Tuesday, November 4, 2025 2:47 PM To: testlablcwusers at jlab.org Cc: John Fischer Subject: [Testlablcwusers] Energizing MOLLER TM1 to 2453 A Howdy, We will ramp our MOLLER TM1 magnet up to 2453 A this week starting from now. We will ramp it to 2230 A operating current first. The heat that will be dumped into the LCW system is about 90 kW. The required flow rate of LCW is 10 gallons per minute. Thanks a lot for attention. Eric Sun MOLLER -------------- next part -------------- An HTML attachment was scrubbed... URL: From ghoshal at jlab.org Thu Nov 6 14:17:17 2025 From: ghoshal at jlab.org (Probir Ghoshal) Date: Thu, 6 Nov 2025 19:17:17 +0000 Subject: [Testlablcwusers] Energizing MOLLER TM1 to 2453 A In-Reply-To: References: <5a97b702-b716-4901-a360-58c01fe8daf2@jlab.org> Message-ID: Dear Mike, Thank you for your insights. I agree with the proposed dates regarding lab status ? this certainly helps us plan more effectively moving forward. It would be helpful if you could provide an estimate of the LCW volume you anticipate needing (dP and return pressure, temp), leaving some headroom in the planning that will allow us to better organize and determine the available capacity, and assess whether we can manage without impacting the cryomodule test schedule. Eric ? In the meantime, may I request you to please determine the amount of LCW you will require per hour (I understand this is primarily for filling TM#4), along with the relevant process parameters such as pressure differential, return pressure, etc.? Also, please confirm that you plan to use a pump for the hydrotest after filling up with LCW independently. Dave K ? As we discussed earlier, could you please assist Eric in ensuring that before any LCW is drawn for the hydrotest, we coordinate and verify all process parameters with Mike? This should be done prior to opening the valve in the Moller test lab for both powering up and hydrotesting TM#4. Thanks in advance for your support. Regards Probir Probir K Ghoshal, PhD. Magnet Group Leader, Experimental Nuclear Physics Jefferson Lab, 600 Kelvin Drive, Suite #3, 55C Room #2545, Newport News, VA 23606 (USA) Telephone: +1 757 269 6702 (office) Mobile: +1 518 334 3289 email: ghoshal at jlab.org Note: Please do not feel obligated to respond to this message outside of your work hours ________________________________ From: Testlablcwusers on behalf of Michael Drury Sent: Thursday, November 6, 2025 1:43 PM To: Eric Sun Cc: Mike McCaughan ; Andrew Lumanog ; John Fischer ; testlablcwusers at jlab.org Subject: Re: [Testlablcwusers] Energizing MOLLER TM1 to 2453 A Hi Eric, Much depends on what the furlough date is. If it remains 11/14, then we would start warming up the cryomodule tomorrow. If the furlough start is extended until the end of the month, then we would continue testing through next week with a warm up starting around the 14th give or take a couple of days. Mike Sent from my T-Mobile 5G Device Get Outlook for Android ________________________________ From: Eric Sun Sent: Thursday, November 6, 2025 1:19:32 PM To: Michael Drury Cc: John Fischer ; Mike McCaughan ; Andrew Lumanog ; Philip Denny ; testlablcwusers at jlab.org Subject: Re: Energizing MOLLER TM1 to 2453 A Hi Mike, It is great to know you are usually running from 9AM - 10PM weekdays. Could you let know us your exact running dates so that we can coordinate our work with yours? We plan to perform hydrostatic pressure test of our MOLLER TM4 on 11/10. Can we use the LCW from 7:30 AM to 8:45 AM to fill our TM4 with water? After 8:45 AM, we don't need to use LCW anymore. Please let us know. Many thanks Eric ________________________________ From: Michael Drury Sent: Wednesday, November 5, 2025 9:00 AM To: Philip Denny ; Eric Sun ; testlablcwusers at jlab.org Cc: John Fischer ; Mike McCaughan Subject: Re: Energizing MOLLER TM1 to 2453 A We are usually running from 9AM - 10PM weekdays. We have a week to a week and a half of testing to do. Mike D. On 11/5/2025 7:03 AM, Philip Denny wrote: Hello Eric, I cannot see who is on the "testlablcwusers at jlab.org" mail list. But we need to add Mike Drury and Mike McCaughan if they are not. There is currently a CEBAF cryomodule in the test cave being tested. I cannot comment when it will be completed, nor the typical daily hours they are running the high power supply that may (most likely) is affecting the water temp. The following statement has been communicated to us: "CMTF / VTA have priority per lab management in event of conflicts. We are the long poles in the tent to maintain the CEBAF start-up schedule, which was communicated to them in their work planning document. Doug Higinbotham can mediate for the SAM planning committee in the event this becomes an issue." Hopefully between you and Mike and Mike, you can work something out as far as timing. Phil ________________________________ From: Testlablcwusers

on behalf of Eric Sun Sent: Tuesday, November 4, 2025 2:47 PM To: testlablcwusers at jlab.org Cc: John Fischer Subject: [Testlablcwusers] Energizing MOLLER TM1 to 2453 A Howdy, We will ramp our MOLLER TM1 magnet up to 2453 A this week starting from now. We will ramp it to 2230 A operating current first. The heat that will be dumped into the LCW system is about 90 kW. The required flow rate of LCW is 10 gallons per minute. Thanks a lot for attention. Eric Sun MOLLER -------------- next part -------------- An HTML attachment was scrubbed... URL: From kashy at jlab.org Thu Nov 6 14:38:11 2025 From: kashy at jlab.org (David Kashy) Date: Thu, 6 Nov 2025 19:38:11 +0000 Subject: [Testlablcwusers] Energizing MOLLER TM1 to 2453 A In-Reply-To: References: <5a97b702-b716-4901-a360-58c01fe8daf2@jlab.org> Message-ID: Eric, Please provide a proposal for me to review. Let me know when you think you will have it and when you think you want to start taking flow as well as any relevant details. Thanks Dave ________________________________ From: Testlablcwusers on behalf of Probir Ghoshal Sent: Thursday, November 6, 2025 2:17 PM To: Michael Drury ; Eric Sun Cc: Mike McCaughan ; Andrew Lumanog ; John Fischer ; testlablcwusers at jlab.org Subject: Re: [Testlablcwusers] Energizing MOLLER TM1 to 2453 A Dear Mike, Thank you for your insights. I agree with the proposed dates regarding lab status ? this certainly helps us plan more effectively moving forward. It would be helpful if you could provide an estimate of the LCW volume you anticipate needing (dP and return pressure, temp), leaving some headroom in the planning that will allow us to better organize and determine the available capacity, and assess whether we can manage without impacting the cryomodule test schedule. Eric ? In the meantime, may I request you to please determine the amount of LCW you will require per hour (I understand this is primarily for filling TM#4), along with the relevant process parameters such as pressure differential, return pressure, etc.? Also, please confirm that you plan to use a pump for the hydrotest after filling up with LCW independently. Dave K ? As we discussed earlier, could you please assist Eric in ensuring that before any LCW is drawn for the hydrotest, we coordinate and verify all process parameters with Mike? This should be done prior to opening the valve in the Moller test lab for both powering up and hydrotesting TM#4. Thanks in advance for your support. Regards Probir Probir K Ghoshal, PhD. Magnet Group Leader, Experimental Nuclear Physics Jefferson Lab, 600 Kelvin Drive, Suite #3, 55C Room #2545, Newport News, VA 23606 (USA) Telephone: +1 757 269 6702 (office) Mobile: +1 518 334 3289 email: ghoshal at jlab.org Note: Please do not feel obligated to respond to this message outside of your work hours ________________________________ From: Testlablcwusers on behalf of Michael Drury Sent: Thursday, November 6, 2025 1:43 PM To: Eric Sun Cc: Mike McCaughan ; Andrew Lumanog ; John Fischer ; testlablcwusers at jlab.org Subject: Re: [Testlablcwusers] Energizing MOLLER TM1 to 2453 A Hi Eric, Much depends on what the furlough date is. If it remains 11/14, then we would start warming up the cryomodule tomorrow. If the furlough start is extended until the end of the month, then we would continue testing through next week with a warm up starting around the 14th give or take a couple of days. Mike Sent from my T-Mobile 5G Device Get Outlook for Android ________________________________ From: Eric Sun Sent: Thursday, November 6, 2025 1:19:32 PM To: Michael Drury Cc: John Fischer ; Mike McCaughan ; Andrew Lumanog ; Philip Denny ; testlablcwusers at jlab.org Subject: Re: Energizing MOLLER TM1 to 2453 A Hi Mike, It is great to know you are usually running from 9AM - 10PM weekdays. Could you let know us your exact running dates so that we can coordinate our work with yours? We plan to perform hydrostatic pressure test of our MOLLER TM4 on 11/10. Can we use the LCW from 7:30 AM to 8:45 AM to fill our TM4 with water? After 8:45 AM, we don't need to use LCW anymore. Please let us know. Many thanks Eric ________________________________ From: Michael Drury Sent: Wednesday, November 5, 2025 9:00 AM To: Philip Denny ; Eric Sun ; testlablcwusers at jlab.org Cc: John Fischer ; Mike McCaughan Subject: Re: Energizing MOLLER TM1 to 2453 A We are usually running from 9AM - 10PM weekdays. We have a week to a week and a half of testing to do. Mike D. On 11/5/2025 7:03 AM, Philip Denny wrote: Hello Eric, I cannot see who is on the "testlablcwusers at jlab.org" mail list. But we need to add Mike Drury and Mike McCaughan if they are not. There is currently a CEBAF cryomodule in the test cave being tested. I cannot comment when it will be completed, nor the typical daily hours they are running the high power supply that may (most likely) is affecting the water temp. The following statement has been communicated to us: "CMTF / VTA have priority per lab management in event of conflicts. We are the long poles in the tent to maintain the CEBAF start-up schedule, which was communicated to them in their work planning document. Doug Higinbotham can mediate for the SAM planning committee in the event this becomes an issue." Hopefully between you and Mike and Mike, you can work something out as far as timing. Phil ________________________________ From: Testlablcwusers

on behalf of Eric Sun Sent: Tuesday, November 4, 2025 2:47 PM To: testlablcwusers at jlab.org Cc: John Fischer Subject: [Testlablcwusers] Energizing MOLLER TM1 to 2453 A Howdy, We will ramp our MOLLER TM1 magnet up to 2453 A this week starting from now. We will ramp it to 2230 A operating current first. The heat that will be dumped into the LCW system is about 90 kW. The required flow rate of LCW is 10 gallons per minute. Thanks a lot for attention. Eric Sun MOLLER -------------- next part -------------- An HTML attachment was scrubbed... URL: From jonesc at jlab.org Thu Nov 6 17:21:58 2025 From: jonesc at jlab.org (Carroll Jones) Date: Thu, 6 Nov 2025 22:21:58 +0000 Subject: [Testlablcwusers] Energizing MOLLER TM1 to 2453 A In-Reply-To: References: <5a97b702-b716-4901-a360-58c01fe8daf2@jlab.org> Message-ID: Please note the Test Lab LCW System makeup is limited. The available makeup rate is 5 GPM or less. Therefore, any items being filled must be done slower than the system makeup rate to not impact system operate and to not cause pump cavitation. For additional information or clarification, please contact me at 757-876-1778. Sincerely, Carroll W. Jones ________________________________ From: Testlablcwusers on behalf of David Kashy Sent: Thursday, November 6, 2025 2:38 PM To: Eric Sun Cc: testlablcwusers at jlab.org Subject: Re: [Testlablcwusers] Energizing MOLLER TM1 to 2453 A Eric, Please provide a proposal for me to review. Let me know when you think you will have it and when you think you want to start taking flow as well as any relevant details. Thanks Dave ________________________________ From: Testlablcwusers on behalf of Probir Ghoshal Sent: Thursday, November 6, 2025 2:17 PM To: Michael Drury ; Eric Sun Cc: Mike McCaughan ; Andrew Lumanog ; John Fischer ; testlablcwusers at jlab.org Subject: Re: [Testlablcwusers] Energizing MOLLER TM1 to 2453 A Dear Mike, Thank you for your insights. I agree with the proposed dates regarding lab status ? this certainly helps us plan more effectively moving forward. It would be helpful if you could provide an estimate of the LCW volume you anticipate needing (dP and return pressure, temp), leaving some headroom in the planning that will allow us to better organize and determine the available capacity, and assess whether we can manage without impacting the cryomodule test schedule. Eric ? In the meantime, may I request you to please determine the amount of LCW you will require per hour (I understand this is primarily for filling TM#4), along with the relevant process parameters such as pressure differential, return pressure, etc.? Also, please confirm that you plan to use a pump for the hydrotest after filling up with LCW independently. Dave K ? As we discussed earlier, could you please assist Eric in ensuring that before any LCW is drawn for the hydrotest, we coordinate and verify all process parameters with Mike? This should be done prior to opening the valve in the Moller test lab for both powering up and hydrotesting TM#4. Thanks in advance for your support. Regards Probir Probir K Ghoshal, PhD. Magnet Group Leader, Experimental Nuclear Physics Jefferson Lab, 600 Kelvin Drive, Suite #3, 55C Room #2545, Newport News, VA 23606 (USA) Telephone: +1 757 269 6702 (office) Mobile: +1 518 334 3289 email: ghoshal at jlab.org Note: Please do not feel obligated to respond to this message outside of your work hours ________________________________ From: Testlablcwusers on behalf of Michael Drury Sent: Thursday, November 6, 2025 1:43 PM To: Eric Sun Cc: Mike McCaughan ; Andrew Lumanog ; John Fischer ; testlablcwusers at jlab.org Subject: Re: [Testlablcwusers] Energizing MOLLER TM1 to 2453 A Hi Eric, Much depends on what the furlough date is. If it remains 11/14, then we would start warming up the cryomodule tomorrow. If the furlough start is extended until the end of the month, then we would continue testing through next week with a warm up starting around the 14th give or take a couple of days. Mike Sent from my T-Mobile 5G Device Get Outlook for Android ________________________________ From: Eric Sun Sent: Thursday, November 6, 2025 1:19:32 PM To: Michael Drury Cc: John Fischer ; Mike McCaughan ; Andrew Lumanog ; Philip Denny ; testlablcwusers at jlab.org Subject: Re: Energizing MOLLER TM1 to 2453 A Hi Mike, It is great to know you are usually running from 9AM - 10PM weekdays. Could you let know us your exact running dates so that we can coordinate our work with yours? We plan to perform hydrostatic pressure test of our MOLLER TM4 on 11/10. Can we use the LCW from 7:30 AM to 8:45 AM to fill our TM4 with water? After 8:45 AM, we don't need to use LCW anymore. Please let us know. Many thanks Eric ________________________________ From: Michael Drury Sent: Wednesday, November 5, 2025 9:00 AM To: Philip Denny ; Eric Sun ; testlablcwusers at jlab.org Cc: John Fischer ; Mike McCaughan Subject: Re: Energizing MOLLER TM1 to 2453 A We are usually running from 9AM - 10PM weekdays. We have a week to a week and a half of testing to do. Mike D. On 11/5/2025 7:03 AM, Philip Denny wrote: Hello Eric, I cannot see who is on the "testlablcwusers at jlab.org" mail list. But we need to add Mike Drury and Mike McCaughan if they are not. There is currently a CEBAF cryomodule in the test cave being tested. I cannot comment when it will be completed, nor the typical daily hours they are running the high power supply that may (most likely) is affecting the water temp. The following statement has been communicated to us: "CMTF / VTA have priority per lab management in event of conflicts. We are the long poles in the tent to maintain the CEBAF start-up schedule, which was communicated to them in their work planning document. Doug Higinbotham can mediate for the SAM planning committee in the event this becomes an issue." Hopefully between you and Mike and Mike, you can work something out as far as timing. Phil ________________________________ From: Testlablcwusers