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This should help with the paper.<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">(cell) 757-876-0480</span><br>
<span style="font-family:"Times New Roman",Times,serif">(email) jacobsg@jlab.org</span></div>
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<div id="divRplyFwdMsg" dir="ltr"><font style="font-size:11pt" face="Calibri, sans-serif" color="#000000"><b>From:</b> George Jacobs<br>
<b>Sent:</b> Monday, April 15, 2019 9:36 AM<br>
<b>To:</b> Carlos Ayerbe Gayoso<br>
<b>Cc:</b> dsg-rtpc@jlab.org<br>
<b>Subject:</b> Re: Gas panel note</font>
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Hi Carlos,</div>
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I would use the following procedure to start up the gas system;<br>
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1st - Verify all gas system components, gas lines, RTPC detector and DMS volume are connected as shown in the gas sytem P&I diagram.</div>
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2nd - Verify proper valve lineup for start up in the following order;<br>
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1) Close or check closed MV1, MV2, MV4, MV6, MV9, and MV10</div>
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2) Open or check open MV3, MV5, MV7, and MV8</div>
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3) Close the flow meter valve on FM1</div>
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4) Open the gas cyclinder valves and set the pressure regulators to 15 psi</div>
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5) Open MV1, MV2, MV9, and MV10</div>
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3rd - Set the flows on MFC1 and FM1</div>
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4rth - Purge the detector and DMS volumes at 100 sccm to 250sccm for ~90 min before turning on the HV</div>
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5th - Once the purge is complete, reduce the detector and DMS flows for data taking</div>
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This should be a good start. I will review the paper and get back to you ASAP.</div>
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Cheers,</div>
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George<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">(cell) 757-876-0480</span><br>
<span style="font-family:"Times New Roman",Times,serif">(email) jacobsg@jlab.org</span></div>
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<div id="x_divRplyFwdMsg" dir="ltr"><font style="font-size:11pt" face="Calibri, sans-serif" color="#000000"><b>From:</b> Carlos Ayerbe Gayoso<br>
<b>Sent:</b> Friday, April 12, 2019 7:11 PM<br>
<b>To:</b> George Jacobs<br>
<b>Subject:</b> Gas panel note</font>
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Hi George, <br>
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here is attached a draft of the note. Please, take a look and tell me any errors or misconceptions I wrote.
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There is something I need. You told me the valves which are normally open or closed. But, since I have in mind something from scratch and specially you clarified me the pressurized system concept, I would like to know the steps (valves to open and similar stuff)
in order to supply gas the first time. <br>
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For instance:</div>
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-have all the NORMALLY OPEN valves open and then open the gas regulator in the shed?
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-open the regulator in the shed and then open MV7 (and MV8) and the rest of then according to our configuration?
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In case of bypassing the DMS, should we close the gas in the shed, or just open and closing valves is enough?
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I mean, what goes first or what should be open first and what final. <br>
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What is in the PDF about the use of the gas panel is something I wrote before I talked to you, so please do not pay attention to it.
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Thank you</div>
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-Carlos<br>
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