<div dir="ltr"><div>I'll check the Hall A gas shed when I go over for the RC meeting. To see if any are there.</div><div><br></div><div>Zeke<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Dec 6, 2021 at 2:35 PM Holly Szumila-Vance <<a href="mailto:hszumila@jlab.org">hszumila@jlab.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
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<p class="MsoNormal">Yes there’s several in the test lab rack. Maybe like 4 or 6 (can’t remember off the top of my head).<u></u><u></u></p>
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<p class="MsoNormal">However, we need to see what is over at the Hall-there should be more premix over there.<u></u><u></u></p>
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<p class="MsoNormal"><b><span style="font-size:12pt;color:black">From: </span></b><span style="font-size:12pt;color:black">Brad Sawatzky <<a href="mailto:brad@swatter.net" target="_blank">brad@swatter.net</a>><br>
<b>Reply-To: </b>"<a href="mailto:brad@swatter.net" target="_blank">brad@swatter.net</a>" <<a href="mailto:brad@swatter.net" target="_blank">brad@swatter.net</a>><br>
<b>Date: </b>Monday, December 6, 2021 at 2:34 PM<br>
<b>To: </b>John Boyd <<a href="mailto:jab7bp@virginia.edu" target="_blank">jab7bp@virginia.edu</a>>, Brad Sawatzky <<a href="mailto:brads@jlab.org" target="_blank">brads@jlab.org</a>><br>
<b>Cc: </b>Holly Szumila-Vance <<a href="mailto:hszumila@jlab.org" target="_blank">hszumila@jlab.org</a>>, Mark Jones <<a href="mailto:jones@jlab.org" target="_blank">jones@jlab.org</a>>, Jack Segal <<a href="mailto:segal@jlab.org" target="_blank">segal@jlab.org</a>>, "<a href="mailto:sbs_gems@jlab.org" target="_blank">sbs_gems@jlab.org</a>" <<a href="mailto:sbs_gems@jlab.org" target="_blank">sbs_gems@jlab.org</a>><br>
<b>Subject: </b>[EXTERNAL] Re: [Sbs_gems] Re: Argon/Carbon Dioxide gas cylinders to move to to gas shed 90A<u></u><u></u></span></p>
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<p class="MsoNormal" style="margin-bottom:12pt">I don't think there are any additional premix near the Hall A gas shed, other than the partials...
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Holly, are there more in a test lab rack?<u></u><u></u></p>
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<p class="MsoNormal">On December 6, 2021 11:23:38 AM EST, John Boyd <<a href="mailto:jab7bp@virginia.edu" target="_blank">jab7bp@virginia.edu</a>> wrote:<u></u><u></u></p>
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<p class="MsoNormal">I went to grab some gas from 90A and I realized that of the 6 cylinders we moved into 90A on Friday, only 2 of them were pre-mix. The other 4 were pure Argon. I'm hoping that there are still 4 pre-mix cylinders over at Hall A and that these
4 argon bottles were brought just accidentally in place of them. <u></u><u></u></p>
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<p class="MsoNormal">Please let me know how to confirm this and proceed.<u></u><u></u></p>
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<p class="MsoNormal">Best,<u></u><u></u></p>
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<p class="MsoNormal">John<u></u><u></u></p>
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<p class="MsoNormal">On Thu, Dec 2, 2021 at 6:24 PM Brad Sawatzky <<a href="mailto:brads@jlab.org" target="_blank">brads@jlab.org</a>> wrote:<u></u><u></u></p>
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<p class="MsoNormal">I moved six 75:25 premix cylinders to the EEL gas racks this afternoon.<br>
There are another 2--3 premix cylinders in EEL/125. That is perhaps<br>
~2 weeks worth of gas for the SBS GEMs -- probably enough to cover<br>
December.<br>
<br>
I don't think there are any more (useful) premix bottles in the Hall A<br>
racks. Those that are left are partials -- I checked a few of them and<br>
they only have 400--500psi in them. Hardly worth the effort to move<br>
them given the GEM gas consumption rate.<br>
<br>
* Holly or Jack: I will leave it you two to coordinate and purchase<br>
more premix if needed. I think we all got the recent email from<br>
Purchasing that the (official) lead-time is now 21 days for most<br>
premix. If we want premix gas for January, we should probably<br>
order ASAP. (Unless there are orders that just haven't shown up<br>
yet?)<br>
<br>
The current plan is to switch to nitrogen over the holiday break.<br>
That may require one person to come on-site at the end of Dec to swap a<br>
bottle. John will contact Mark, et to ensure at least he and one other<br>
GEM expert are on the 'Holiday access list' so they can take care of<br>
this.<br>
<br>
-- Brad<br>
<br>
-- <br>
Brad Sawatzky (he/him), PhD <<a href="mailto:brads@jlab.org" target="_blank">brads@jlab.org</a>> -<>- Jefferson Lab/ Hall C/C111<br>
Ph: 757-269-5947 -<>- Fax: 757-269-5235 -<>- Pager: <a href="mailto:brads-page@jlab.org" target="_blank">
brads-page@jlab.org</a><br>
The most exciting phrase to hear in science, the one that heralds new<br>
discoveries, is not "Eureka!" but "That's funny..." -- Isaac Asimov<br>
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<p class="MsoNormal">-- <br>
Sent from my Android phone with K-9 Mail. Please excuse my brevity.<u></u><u></u></p>
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