<div dir="auto">Hi Marc,<div dir="auto"><br></div><div dir="auto">For the flow meters range, we'll have to talk with Kondo. I think we'll need atleast 300 cc/min (max value). </div><div dir="auto">Kondo: I think as we discussed, 300 cc/min is equals to 20 untis of flow rate in the flow meters we have in the clean room.</div><div dir="auto">. Is that the highesst we would need? (300 cc/min)</div><div dir="auto"><br></div><div dir="auto">Best</div><div dir="auto">Anu</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, 23 Dec 2020, 13:54 Marc Mcmullen, <<a href="mailto:mcmullen@jlab.org" target="_blank" rel="noreferrer">mcmullen@jlab.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">




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Hi Anu and Chuck,</div>
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When we get back from break, I'll discuss changing out the flow meter valves for a more sensitive range (maybe 0 to 100 sccm) with George and see what he advises.
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During your leak checking, can you make note of what tubing was changed out. We are keeping a record of issues with the system. I have provided a spread sheet with the two connection for each length of tubing. If you could put a yes or no in the indicated cell
 it would help us understand where the leaks are.</div>
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If there are other leaks please feel free to expand the chart. Also pictures of the new tubing would help.</div>
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Ch1</td>
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Regards,</div>
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Marc<br>
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<div id="m_-6718895599377291740m_-6565903144013394746divRplyFwdMsg" dir="ltr"><font style="font-size:11pt" face="Calibri, sans-serif" color="#000000"><b>From:</b> Anuruddha Rathnayake <<a href="mailto:adr4zs@virginia.edu" rel="noreferrer noreferrer" target="_blank">adr4zs@virginia.edu</a>><br>
<b>Sent:</b> Wednesday, December 23, 2020 12:35 PM<br>
<b>To:</b> Marc Mcmullen <<a href="mailto:mcmullen@jlab.org" rel="noreferrer noreferrer" target="_blank">mcmullen@jlab.org</a>><br>
<b>Cc:</b> <a href="mailto:dsg-halla_gas@jlab.org" rel="noreferrer noreferrer" target="_blank">dsg-halla_gas@jlab.org</a> <<a href="mailto:dsg-halla_gas@jlab.org" rel="noreferrer noreferrer" target="_blank">dsg-halla_gas@jlab.org</a>><br>
<b>Subject:</b> [EXTERNAL] Re: [Dsg-halla_gas] GEM gas distribution test setup</font>
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<div dir="auto">Hi Marc,
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<div dir="auto">There has been several leaks in the gas pannel and Chuck replaced all the Nylon tubing with Poly Ethylene tubging today morning. Now we are flushing the system and planning to connect the GEMs in the afternoon, if there are no more issues.</div>
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<div dir="auto">Best</div>
<div dir="auto">Anu</div>
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<div dir="ltr">On Wed, 23 Dec 2020, 11:24 Marc Mcmullen, <<a href="mailto:mcmullen@jlab.org" rel="noreferrer noreferrer" target="_blank">mcmullen@jlab.org</a>> wrote:<br>
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Hi Kondo,</div>
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I was just checking to see if there was an update on the test setup and if there are plans to flow gas during the holiday break.</div>
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Regards,</div>
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Marc<br>
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