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If there isn't room for a chassis then individual boxes are what we'd go with, but it isn't clear yet if there is space available or not along with conflicting information about how much tubing is to be between the detector exhaust and sensor.</div>
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I suspect if individual boxes we'd just get cheap plastic ones with a design very similar to what you suggested.</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Dsg-halla_gas <dsg-halla_gas-bounces@jlab.org> on behalf of Marc Mcmullen <mcmullen@jlab.org><br>
<b>Sent:</b> Wednesday, July 29, 2020 11:32 AM<br>
<b>To:</b> George Jacobs <jacobsg@jlab.org>; dsg-halla_gas@jlab.org <dsg-halla_gas@jlab.org><br>
<b>Subject:</b> Re: [Dsg-halla_gas] Hall A GEM Detector gas outlet Flow Sensor</font>
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Hi George,</div>
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Thanks for the drawings. We can look at mounting locations for the exhaust flow sensors when Jack sends us some documentation.</div>
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Marc<br>
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<div id="x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> George Jacobs <jacobsg@jlab.org><br>
<b>Sent:</b> Wednesday, July 29, 2020 11:24 AM<br>
<b>To:</b> Marc Mcmullen <mcmullen@jlab.org>; dsg-halla_gas@jlab.org <dsg-halla_gas@jlab.org><br>
<b>Subject:</b> Hall A GEM Detector gas outlet Flow Sensor</font>
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Please see attached diagram. This is what Jack was referring to for the gas out sensor. I happen to agree with his argument and that this type of setup is what is actually needed.
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The sensor is enclosed in a box. It could be a very basic aluminum enclosure. This has a hole for plugging in the phone connection on the side and the 2 push lok wall fittings. This would be placed as close to the detector gas outlet as resonable to minimize
back pressure.<br>
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The GEM windows are large, gas back pressure will stress the window at the corners the most. This may lead to increasing detector leak rates and other serious problems over time.<br>
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<div>-- <br>
George Jacobs<br>
<span style="font-family:"Times New Roman",Times,serif">Jefferson Lab (TJNAF)</span><br>
<span style="font-family:"Times New Roman",Times,serif">STE 12</span><br>
<span style="font-family:"Times New Roman",Times,serif">12000 Jefferson Ave.</span><br>
<span style="font-family:"Times New Roman",Times,serif">Newport News, VA 23606</span><br>
<span style="font-family:"Times New Roman",Times,serif">(office) 757-269-7021</span><br>
<span style="font-family:"Times New Roman",Times,serif">(email) jacobsg@jlab.org</span></div>
<div><span style="font-family:"Times New Roman",Times,serif">(url) https://userweb.jlab.org/~jacobsg<br>
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<div id="x_x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Dsg-halla_gas <dsg-halla_gas-bounces@jlab.org> on behalf of Marc Mcmullen <mcmullen@jlab.org><br>
<b>Sent:</b> Tuesday, July 28, 2020 12:59 PM<br>
<b>To:</b> dsg-halla_gas@jlab.org <dsg-halla_gas@jlab.org><br>
<b>Subject:</b> [Dsg-halla_gas] meeting minutes from 07/28</font>
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Here are the minutes from today's GEM Gas Distribution Meeting</div>
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Marc<br>
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