<html><head></head><body>I don't think there are any additional premix near the Hall A gas shed, other than the partials... <br><br>Holly, are there more in a test lab rack?<br><br><div class="gmail_quote">On December 6, 2021 11:23:38 AM EST, John Boyd <jab7bp@virginia.edu> wrote:<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<div dir="ltr">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. <br><div><br></div><div>Please let me know how to confirm this and proceed.</div><div><br></div><div>Best,</div><div><br></div><div>John</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Dec 2, 2021 at 6:24 PM Brad Sawatzky <<a href="mailto:brads@jlab.org">brads@jlab.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex">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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</blockquote></div>
</blockquote></div><div style='white-space: pre-wrap'><div class='k9mail-signature'>-- <br>Sent from my Android phone with K-9 Mail. Please excuse my brevity.</div></div></body></html>