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<div dir="auto">Thanks so much, Jay!</div>
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<div dir="auto">Juliette </div>
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<div dir="auto" style="font-size:12px; color:#575757">Sent from my Galaxy</div>
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<div>-------- Original message --------</div>
<div>From: Jay Benesch <benesch@jlab.org> </div>
<div>Date: 2022-03-17 3:10 p.m. (GMT-06:00) </div>
<div>To: moller@jlab.org </div>
<div>Subject: [Moller] chillers, vacuum </div>
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<div class="PlainText">Material promised at spectrometer meeting:<br>
<br>
<br>
<a href="https://www.smcusa.com/products/chillers/">https://www.smcusa.com/products/chillers/</a><br>
<br>
but either my memory failed or they removed the big chillers from their <br>
line. Largest now is 28 kW. We're using small ones for the MO system.<br>
<br>
<a href="https://www.huber-online.com/us/cs-chiller.aspx">https://www.huber-online.com/us/cs-chiller.aspx</a> has one that can cool 70
<br>
kW and maintain 15 C.<br>
<br>
<a href="https://www.topchiller.com/recirculating-water-chiller/">https://www.topchiller.com/recirculating-water-chiller/</a> goes to 240 kW<br>
<br>
------------------<br>
<a href="https://www.agilent.com/en/product/vacuum-technologies/turbo-pumps-controllers/turbo-pumps/twistorr-305-fs-turbo-pump">https://www.agilent.com/en/product/vacuum-technologies/turbo-pumps-controllers/turbo-pumps/twistorr-305-fs-turbo-pump</a>
<br>
<br>
Linacs have water cooled version as that temperature is constant while <br>
air at ends of linacs is warm due to magnets. The only turbo failure <br>
I'm sure of was due to someone not opening the water valve after a down. <br>
We now have a software alarm on turbo temp. There may have been a <br>
second.<br>
<br>
<a href="https://www.agilent.com/en/product/vacuum-technologies/turbo-pumps-controllers/turbo-pump-controllers/twistorr-305-fs-remote-controller">https://www.agilent.com/en/product/vacuum-technologies/turbo-pumps-controllers/turbo-pump-controllers/twistorr-305-fs-remote-controller</a><br>
<br>
<a href="https://www.agilent.com/en/product/vacuum-technologies/dry-scroll-pumps/triscroll-pumps">https://www.agilent.com/en/product/vacuum-technologies/dry-scroll-pumps/triscroll-pumps</a><br>
Buying TriScroll 300 for linacs now. TriScroll 600 also available.<br>
Scroll tips are replaced annually due to radiation damage.<br>
<br>
<a href="https://www.agilent.com/en/product/vacuum-technologies">https://www.agilent.com/en/product/vacuum-technologies</a><br>
top vacuum page. IDP scroll pumps are the ones that had cooling fans <br>
fail due to radiation damage to fan microcontroller.<br>
<br>
Rick Gonzales designed an instrumentation chassis connecting to <br>
Instrutech TC gauge on foreline and a right angle valve to make sure the <br>
turbo didn't turn into a helicopter. Software to interface to this and <br>
the TwissTorr controller exists. Agilent software not purchased.<br>
From JMenu:<br>
Operations -> Vacuum -> Insulating Vacuum<br>
There are 15 zones with TEMP and a small blue button next to TEMP. <br>
These are the ones with Agilent systems. Hitting the button brings up <br>
the turbo and instrumentation interface. Scroll pumps are plugged into <br>
emergency power downstairs, no remote power control. Where possible, <br>
turbo controllers are plugged into emergency power upstairs. Emergency <br>
power is available only in selected racks and in some cases the distance <br>
is over 100' to closest outlet, so house power for those.<br>
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