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Eric,</div>
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Please provide a proposal for me to review.</div>
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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.</div>
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Thanks</div>
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Dave</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Testlablcwusers <testlablcwusers-bounces@jlab.org> on behalf of Probir Ghoshal <ghoshal@jlab.org><br>
<b>Sent:</b> Thursday, November 6, 2025 2:17 PM<br>
<b>To:</b> Michael Drury <drury@jlab.org>; Eric Sun <qsun@jlab.org><br>
<b>Cc:</b> Mike McCaughan <michaelm@jlab.org>; Andrew Lumanog <andrewl@jlab.org>; John Fischer <fischer@jlab.org>; testlablcwusers@jlab.org <testlablcwusers@jlab.org><br>
<b>Subject:</b> Re: [Testlablcwusers] Energizing MOLLER TM1 to 2453 A</font>
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Dear Mike,</div>
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Thank you for your insights. I agree with the proposed dates regarding lab status — this certainly helps us plan more effectively moving forward.</div>
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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.</div>
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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.</div>
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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.</div>
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Thanks in advance for your support.</div>
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Regards</div>
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Probir</div>
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<span style="font-size:12pt"><b>Probir K Ghoshal</b>, PhD.<br>
</span><span style="font-size:11pt">Magnet Group Leader, Experimental Nuclear Physics<br>
<b><i>Jefferson Lab</i></b><i>, 600 Kelvin Drive, Suite #3, 55C<br>
Room #2545, Newport News, VA 23606 (USA)</i><br>
Telephone: +1 757 269 6702 (office)<br>
Mobile: +1 518 334 3289<br>
email: ghoshal@jlab.org</span></div>
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<span style="font-family:"Segoe UI",sans-serif; font-size:8pt; color:black; line-height:107%"><b><i>Note:</i></b><i> Please do not feel obligated to respond to this message outside of your work hours</i></span><span style="font-family:Calibri,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)"><br>
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<div id="x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Testlablcwusers <testlablcwusers-bounces@jlab.org> on behalf of Michael Drury <drury@jlab.org><br>
<b>Sent:</b> Thursday, November 6, 2025 1:43 PM<br>
<b>To:</b> Eric Sun <qsun@jlab.org><br>
<b>Cc:</b> Mike McCaughan <michaelm@jlab.org>; Andrew Lumanog <andrewl@jlab.org>; John Fischer <fischer@jlab.org>; testlablcwusers@jlab.org <testlablcwusers@jlab.org><br>
<b>Subject:</b> Re: [Testlablcwusers] Energizing MOLLER TM1 to 2453 A</font>
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Hi Eric, </div>
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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. </div>
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Mike </div>
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<span style="font-family:Aptos,Aptos_MSFontService,-apple-system,Roboto,Arial,Helvetica,sans-serif; font-size:12pt">Sent from my T-Mobile 5G Device</span><br>
<span style="font-family:Aptos,Aptos_MSFontService,-apple-system,Roboto,Arial,Helvetica,sans-serif; font-size:12pt">Get
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<div id="x_x_divRplyFwdMsg" style="font-size:11pt"><strong>From:</strong> Eric Sun <qsun@jlab.org><br>
<strong>Sent:</strong> Thursday, November 6, 2025 1:19:32 PM<br>
<strong>To:</strong> Michael Drury <drury@jlab.org><br>
<strong>Cc:</strong> John Fischer <fischer@jlab.org>; Mike McCaughan <michaelm@jlab.org>; Andrew Lumanog <andrewl@jlab.org>; Philip Denny <denny@jlab.org>; testlablcwusers@jlab.org <testlablcwusers@jlab.org><br>
<strong>Subject:</strong> Re: Energizing MOLLER TM1 to 2453 A<br>
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Hi Mike,</div>
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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?</div>
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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.</div>
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Please let us know.</div>
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Many thanks</div>
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Eric</div>
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<div id="x_x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt; color:rgb(0,0,0)"><b>From:</b> Michael Drury <drury@jlab.org><br>
<b>Sent:</b> Wednesday, November 5, 2025 9:00 AM<br>
<b>To:</b> Philip Denny <denny@jlab.org>; Eric Sun <qsun@jlab.org>; testlablcwusers@jlab.org <testlablcwusers@jlab.org><br>
<b>Cc:</b> John Fischer <fischer@jlab.org>; Mike McCaughan <michaelm@jlab.org><br>
<b>Subject:</b> Re: Energizing MOLLER TM1 to 2453 A</font>
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<div>We are usually running from 9AM - 10PM weekdays. We have a week to a week and a half of testing to do.<br>
Mike D.<br>
<br>
<div class="x_x_x_moz-cite-prefix">On 11/5/2025 7:03 AM, Philip Denny wrote:<br>
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Hello Eric,</div>
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I cannot see who is on the <a class="x_x_x_moz-txt-link-rfc2396E" href="mailto:testlablcwusers@jlab.org">
"testlablcwusers@jlab.org"</a> mail list. But we need to add Mike Drury and Mike McCaughan if they are not.</div>
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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.</div>
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<span style="font-size:11pt">The following statement has been communicated to us:
<i>"C</i></span><span style="font-size:12pt"><i>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."</i></span></div>
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Hopefully between you and Mike and Mike, you can work something out as far as timing.</div>
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Phil</div>
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<b>From:</b> Testlablcwusers <a class="x_x_x_moz-txt-link-rfc2396E" href="mailto:testlablcwusers-bounces@jlab.org">
<testlablcwusers-bounces@jlab.org></a> on behalf of Eric Sun <a class="x_x_x_moz-txt-link-rfc2396E" href="mailto:qsun@jlab.org">
<qsun@jlab.org></a><br>
<b>Sent:</b> Tuesday, November 4, 2025 2:47 PM<br>
<b>To:</b> <a class="x_x_x_moz-txt-link-abbreviated" href="mailto:testlablcwusers@jlab.org">testlablcwusers@jlab.org</a>
<a class="x_x_x_moz-txt-link-rfc2396E" href="mailto:testlablcwusers@jlab.org"><testlablcwusers@jlab.org></a><br>
<b>Cc:</b> John Fischer <a class="x_x_x_moz-txt-link-rfc2396E" href="mailto:fischer@jlab.org">
<fischer@jlab.org></a><br>
<b>Subject:</b> [Testlablcwusers] Energizing MOLLER TM1 to 2453 A</div>
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Howdy,</div>
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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.</div>
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Thanks a lot for attention.</div>
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Eric Sun</div>
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MOLLER</div>
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