<div dir="ltr"><div>Hi Brad,</div><div><br></div><div>That's a good point. But I did know that Jack had found partials a while ago. I did check the Hall A gas shed and it looks like everything that had Holly's name on it got moved. So at first glance it seems like the correct bottles were moved. But I'll get with someone who has access to 90A and look at those bottles. I'm just curious how premix was ordered and we got just Argon.</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 4:05 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:1px solid rgb(204,204,204);padding-left:1ex">Hi Zeke,<br>
<br>
Just don't get fooled by the rack of partially full bottles in the Hall<br>
A racks.<br>
> I don't think there are any more (useful) premix bottles in the<br>
> Hall A racks. Those that are left are partials -- I checked a<br>
> few of them and they only have 400--500psi in them. Hardly<br>
> worth the effort to move them given the GEM gas consumption<br>
> rate.<br>
<br>
If someone can do a count and perhaps send a photo of the bottles<br>
in the Test Lab rack we can get the Techs to help move them over.<br>
(I can do this tomorrow, as long as I know what I'm allowed to grab.)<br>
<br>
-- Brad<br>
<br>
On Mon, 06 Dec 2021, Ezekiel Wertz wrote:<br>
<br>
> I'll check the Hall A gas shed when I go over for the RC meeting. To<br>
> see if any are there.<br>
><br>
> Zeke<br>
><br>
> On Mon, Dec 6, 2021 at 2:35 PM Holly Szumila-Vance <[1]<a href="mailto:hszumila@jlab.org" target="_blank">hszumila@jlab.org</a>><br>
> wrote:<br>
> <br>
> Yes there's several in the test lab rack. Maybe like 4 or 6 (can't<br>
> remember off the top of my head).<br>
> <br>
> However, we need to see what is over at the Hall-there should be more<br>
> premix over there.<br>
> <br>
> From: Brad Sawatzky <[2]<a href="mailto:brad@swatter.net" target="_blank">brad@swatter.net</a>><br>
> Reply-To: "[3]<a href="mailto:brad@swatter.net" target="_blank">brad@swatter.net</a>" <[4]<a href="mailto:brad@swatter.net" target="_blank">brad@swatter.net</a>><br>
> Date: Monday, December 6, 2021 at 2:34 PM<br>
> To: John Boyd <[5]<a href="mailto:jab7bp@virginia.edu" target="_blank">jab7bp@virginia.edu</a>>, Brad Sawatzky <[6]<a href="mailto:brads@jlab.org" target="_blank">brads@jlab.org</a>><br>
> Cc: Holly Szumila-Vance <[7]<a href="mailto:hszumila@jlab.org" target="_blank">hszumila@jlab.org</a>>, Mark Jones<br>
> <[8]<a href="mailto:jones@jlab.org" target="_blank">jones@jlab.org</a>>, Jack Segal <[9]<a href="mailto:segal@jlab.org" target="_blank">segal@jlab.org</a>>,<br>
> "[10]<a href="mailto:sbs_gems@jlab.org" target="_blank">sbs_gems@jlab.org</a>" <[11]<a href="mailto:sbs_gems@jlab.org" target="_blank">sbs_gems@jlab.org</a>><br>
> Subject: [EXTERNAL] Re: [Sbs_gems] Re: Argon/Carbon Dioxide gas cylinders<br>
> to move to to gas shed 90A<br>
> <br>
> I don't think there are any additional premix near the Hall A gas shed,<br>
> other than the partials...<br>
> <br>
> Holly, are there more in a test lab rack?<br>
> <br>
> On December 6, 2021 11:23:38 AM EST, John Boyd <[12]<a href="mailto:jab7bp@virginia.edu" target="_blank">jab7bp@virginia.edu</a>><br>
> wrote:<br>
> <br>
> I went to grab some gas from 90A and I realized that of the 6 cylinders<br>
> we moved into 90A on Friday, only 2 of them were pre-mix. The other 4<br>
> were pure Argon. I'm hoping that there are still 4 pre-mix cylinders<br>
> over at Hall A and that these 4 argon bottles were brought just<br>
> accidentally in place of them.<br>
> <br>
> Please let me know how to confirm this and proceed.<br>
> <br>
> Best,<br>
> <br>
> John<br>
> <br>
> On Thu, Dec 2, 2021 at 6:24 PM Brad Sawatzky <[13]<a href="mailto:brads@jlab.org" target="_blank">brads@jlab.org</a>> wrote:<br>
> <br>
> I moved six 75:25 premix cylinders to the EEL gas racks this<br>
> 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<br>
> 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<br>
> break. That may require one person to come on-site at the end<br>
> of Dec to swap a bottle. John will contact Mark, et to ensure<br>
> at least he and one other GEM expert are on the 'Holiday access<br>
> list' so they can take care of 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>
</blockquote></div>