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<p class="MsoNormal">Is there a reason Ch3 is 67 vs mid 80s for the other three channels?</p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Sent from <a href="https://go.microsoft.com/fwlink/?LinkId=550986">
Mail</a> for Windows 10</p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="border:none;padding:0in"><b>From: </b><a href="mailto:adr4zs@virginia.edu">Anuruddha Rathnayake</a><br>
<b>Sent: </b>Tuesday, January 26, 2021 11:13 AM<br>
<b>To: </b><a href="mailto:mcmullen@jlab.org">Marc Mcmullen</a><br>
<b>Cc: </b><a href="mailto:nl8n@virginia.edu">Liyanage, Nilanga K (nl8n)</a>; <a href="mailto:dsg-halla_gem@jlab.org">
dsg-halla_gem@jlab.org</a>; <a href="mailto:sj9ry@virginia.edu">Jeffas, Sean (sj9ry)</a><br>
<b>Subject: </b>Re: [Dsg-halla_gem] [EXTERNAL] Re: Prototype gas distribution system</p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Hi Marc,<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I just looked and it works. <o:p></o:p></p>
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<p class="MsoNormal">It seems like the readback is reading out a little less (~230) than what is says in thr flo meters (~250).<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Best<o:p></o:p></p>
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<p class="MsoNormal">Anu<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Tue, 26 Jan 2021, 11:08 Marc Mcmullen, <<a href="mailto:mcmullen@jlab.org">mcmullen@jlab.org</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">It doesn’t matter. Please just leave it.</p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> </p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Sent from
<a href="https://urldefense.proofpoint.com/v2/url?u=https-3A__go.microsoft.com_fwlink_-3FLinkId-3D550986&d=DwMFaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=hQJSuIbzwxGOX7LZbVne0gHeC6U5hlDu99LTH_I02ZM&m=KZk0W2gpGyKzyzyiAbgaQrF2HlUfb3KR-zZ0tDs9BjE&s=iSH9gpwoQuzZ6-mez4WBRpqn-VhrI72rUDFH0oif1BU&e=" target="_blank">
Mail</a> for Windows 10</p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> </p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b>From:
</b><a href="mailto:adr4zs@virginia.edu" target="_blank">Anuruddha Rathnayake</a><br>
<b>Sent: </b>Tuesday, January 26, 2021 11:07 AM<br>
<b>To: </b><a href="mailto:mcmullen@jlab.org" target="_blank">Marc Mcmullen</a><br>
<b>Cc: </b><a href="mailto:nl8n@virginia.edu" target="_blank">Liyanage, Nilanga K (nl8n)</a>;
<a href="mailto:dsg-halla_gem@jlab.org" target="_blank">dsg-halla_gem@jlab.org</a>;
<a href="mailto:sj9ry@virginia.edu" target="_blank">Jeffas, Sean (sj9ry)</a><br>
<b>Subject: </b>Re: [Dsg-halla_gem] [EXTERNAL] Re: Prototype gas distribution system</p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> </p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Hi Marc,</p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> </p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Also, chuck pulled the network cable out when qe tried to re-orient the setup a little bit but didn't realize to which port (input/putput) the cable was plugged in. </p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> </p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Could you tell us it whether it's the input or the output?</p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Right now it's plugged into the output.</p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Best</p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Anu</p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> </p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">On Tue, 26 Jan 2021, 10:57 Anuruddha Rathnayake, <<a href="mailto:adr4zs@virginia.edu" target="_blank">adr4zs@virginia.edu</a>> wrote:</p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Hi Marc,</p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> </p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Chuck and I started flowing N2 gas through the lines labeled as 1,2,3, and 4.</p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">We are purging the system with each flow meter set to 250 cc/min.</p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> </p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">I'll be here until noon if you want to test the system or I can be back aroun 2:30 pm to test the readback.</p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> </p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Best</p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Anu</p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> </p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">On Mon, 25 Jan 2021, 13:20 Marc Mcmullen, <<a href="mailto:mcmullen@jlab.org" target="_blank">mcmullen@jlab.org</a>> wrote:</p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt;color:black">Thanks Anu,</span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt;color:black"> </span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt;color:black">After everything is connected and gas is flowing please send an email to the
<a href="mailto:dsg-halla_gem@jlab.org" target="_blank">dsg-halla_gem@jlab.org</a> mailing list. Once we can verify that everything is flowing, I would like to test readback, by changing the flow meter settings in steps. I'll send you some step values when
you are available to run some tests.</span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt;color:black"> </span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt;color:black">Regards,</span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt;color:black">Marc</span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><img border="0" width="451" height="2" style="width:4.7013in;height:.0208in" id="_x0000_i1026" src="cid:image003.png@01D6F3D3.433F28B0"></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span style="color:black">From:</span></b><span style="color:black"> Anuruddha Rathnayake <<a href="mailto:adr4zs@virginia.edu" target="_blank">adr4zs@virginia.edu</a>><br>
<b>Sent:</b> Monday, January 25, 2021 1:12 PM<br>
<b>To:</b> Liyanage, Nilanga K (nl8n) <<a href="mailto:nl8n@virginia.edu" target="_blank">nl8n@virginia.edu</a>><br>
<b>Cc:</b> Marc Mcmullen <<a href="mailto:mcmullen@jlab.org" target="_blank">mcmullen@jlab.org</a>>;
<a href="mailto:dsg-halla_gem@jlab.org" target="_blank">dsg-halla_gem@jlab.org</a> <<a href="mailto:dsg-halla_gem@jlab.org" target="_blank">dsg-halla_gem@jlab.org</a>>; Jeffas, Sean (sj9ry) <<a href="mailto:sj9ry@virginia.edu" target="_blank">sj9ry@virginia.edu</a>><br>
<b>Subject:</b> Re: [Dsg-halla_gem] [EXTERNAL] Re: Prototype gas distribution system</span>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> </p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:12.0pt">Hi Marc and Nilanga,</p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:12.0pt">Thank you very much. I'll get it connected asap.</p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Best</p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Anu</p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">On Mon, Jan 25, 2021 at 12:56 PM Liyanage, Nilanga K (nl8n) <<a href="mailto:nl8n@virginia.edu" target="_blank">nl8n@virginia.edu</a>> wrote:</p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt;color:black">Hi Marc</span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt;color:black">Thanks for taking care of the issues in the gas system.</span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt;color:black">Anu: I suggest that you (with help from Chuck as needed) reconnect the GEM layer to the prototype panel.</span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt;color:black">Best</span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt;color:black">Nilanga</span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span style="color:black">From:</span></b><span style="color:black"> Dsg-halla_gem <<a href="mailto:dsg-halla_gem-bounces@jlab.org" target="_blank">dsg-halla_gem-bounces@jlab.org</a>>
on behalf of Marc Mcmullen <<a href="mailto:mcmullen@jlab.org" target="_blank">mcmullen@jlab.org</a>><br>
<b>Sent:</b> Monday, January 25, 2021 12:31 PM<br>
<b>To:</b> <a href="mailto:dsg-halla_gem@jlab.org" target="_blank">dsg-halla_gem@jlab.org</a> <<a href="mailto:dsg-halla_gem@jlab.org" target="_blank">dsg-halla_gem@jlab.org</a>><br>
<b>Subject:</b> [Dsg-halla_gem] Prototype gas distribution system</span> </p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt;color:black">Hi Chuck, Anu, and Jack</span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt;color:black">George has returned the regulator panel to the TEDF and connected the four channels not currently in use. He has replaced the faulty regulator,
and all the gas lines are now polyethylene. Would it be possible to connect the system back up as designed. This would require:</span></p>
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<li class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l1 level1 lfo1">
The four channels supplying the UVA GEM should be disconnected from the output of the four 500 sccm flow meters and connected to the standard flow channels of the gas flow sensor chassis, on the back of the rack (chassis front), these channels are labeled "Std
Flow" (1 to 4) <o:p></o:p></li></ul>
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<span style="font-size:12.0pt">Four 1/4" gas lines should be connected from the manifold on the DSG designed regulator panel to connect to the input of the four 500 sccm flow meter, and the supply line from the gas bottle should be connected to the input fitting
on the regulator panel. </span><o:p></o:p></li></ul>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt;color:black"> </span></p>
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<li class="MsoNormal" style="color:black;mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l0 level1 lfo3">
<span style="font-size:12.0pt">The output of the 500 sccm flow meters should be connected to the corresponding inputs on the back of the Gas Flow Sensor chassis input (back of the chassis), these are labeled "Std Flow" (1 to 4)</span><o:p></o:p></li></ul>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt;color:black">Once connected and flow has been reestablished, remote monitoring can be done by using this link:</span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt;color:black"> </span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt;color:black"><a href="https://epicsweb.jlab.org/wedm/screen?edl=%2fcs%2fopshome%2fedm%2fdsg%2fGEM_text.edl" target="_blank" title="https://epicsweb.jlab.org/wedm/screen?edl=%2fcs%2fopshome%2fedm%2fdsg%2fGEM_text.edl">Prototype
GEM WEDM page</a></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt;color:black">Using this link only requires your jlab username and cue password, it can even be viewed from a smartphone. Please let me know when you
are able reconnect the system, I will ensure the monitoring software is on. Currently, it is running.</span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt;color:black"> </span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt;color:black">Regards,</span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt;color:black">Marc</span></p>
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