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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Bob Miller <rmiller@jlab.org><br>
<b>Sent:</b> Tuesday, November 26, 2024 1:20:00 PM<br>
<b>To:</b> Gabriel Charles <gabriel.charles@ijclab.in2p3.fr><br>
<b>Cc:</b> Denny Insley <dinsley@jlab.org>; Morgan Cook IV <mcookiv@jlab.org>; Marc Mcmullen <mcmullen@jlab.org><br>
<b>Subject:</b> Re: Purge the gas line</font>
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Hi Gabriel,</div>
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<br>
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The ALERT gas system is fully functional in local control. </div>
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<br>
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All relief valves have been tested and all leak checks are complete.</div>
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<br>
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The detector supply line to the hall is set at 15 psi with all valves closed. The target supply line to the hall is set at 20 psi with all valves closed.</div>
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<br>
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The detector is open to atmosphere through the supply and return lines and are not currently connected to the gas system. </div>
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<br>
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The target straw is under pressure with a separate N2 supply regulated to 5 psi. The target is not currently connected to the gas system.</div>
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<br>
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Please notify Morgan when you are ready to connect the detector and target to the gas system.</div>
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<br>
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Thanks,</div>
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Bob Miller</div>
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Hall B Lead Engineer</div>
<div style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
(757) 822-9586</div>
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<div id="x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Gabriel Charles <gabriel.charles@ijclab.in2p3.fr><br>
<b>Sent:</b> Sunday, November 24, 2024 3:35 PM<br>
<b>To:</b> Marc Mcmullen <mcmullen@jlab.org><br>
<b>Cc:</b> Bob Miller <rmiller@jlab.org>; Denny Insley <dinsley@jlab.org>; Marc Mcmullen via dsg-hallb_gas <dsg-hallb_gas@jlab.org>; Patrizia Rossi <rossi@jlab.org><br>
<b>Subject:</b> [EXTERNAL] Re: Purge the gas line</font>
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<div>Hi Marc,<br>
</div>
<div><br data-mce-bogus="1">
</div>
<div> Thank you for your email, work and detailled tests.<br data-mce-bogus="1">
</div>
<div> What I really appreciate is that despite the complexity of the gas system, you managed to keep the interface simple.<br>
</div>
<div><br data-mce-bogus="1">
</div>
<div> We will get in touch with Bob and maybe Nathan to see how I can access the control panel from afar.<br data-mce-bogus="1">
</div>
<div><br data-mce-bogus="1">
</div>
<div>Have a nice day,<br data-mce-bogus="1">
</div>
<div data-marker="__SIG_PRE__">--<br>
Gabriel CHARLES<br>
IJCLab/IN2P3/CNRS, University Paris-Saclay<br>
+33 1 69 15 64 42<br>
Pictures about detectors:<br>
https://www.instagram.com/particledetectors/</div>
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</div>
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<div data-marker="__HEADERS__"><b>De: </b>"Marc Mcmullen" <mcmullen@jlab.org><br>
<b>À: </b>"Bob Miller" <rmiller@jlab.org>, "Gabriel Charles" <gabriel.charles@ijclab.in2p3.fr><br>
<b>Cc: </b>"Denny Insley" <dinsley@jlab.org>, "Marc Mcmullen via dsg-hallb_gas" <dsg-hallb_gas@jlab.org>, "Patrizia Rossi" <rossi@jlab.org><br>
<b>Envoyé: </b>Vendredi 22 Novembre 2024 20:30:46<br>
<b>Objet: </b>Re: Purge the gas line<br>
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Hi Gabriel and Bob,</div>
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<br>
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The ALERT DC and BoNuS target controls are currently online and working.</div>
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<br>
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The BoNuS target controls were used to pressurize the gas line which feeds the target straw (although the straw is not connected).</div>
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<br>
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The ALERT DC controls are operating in auto-mode and holding pressure in the system to a set point of 47 mbar above atmosphere. I have run the following tests:</div>
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<div class="x_x_elementToProof">Raise the DC pressure manually to exceed the low pressure fault (ensuring manual control works)</div>
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<div class="x_x_elementToProof">Set the system to auto and observed it increasing pressure to a set point of 47 mbar</div>
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<div class="x_x_elementToProof">Changing the set point to 55 mbar and observed the system increase pressure in the DC to 55 mbar and hold</div>
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<div class="x_x_elementToProof">Change the set point back to 47 mbar and observed the system decrease pressure in the DC back to 47 mbar and hold</div>
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<div class="x_x_elementToProof">Intentionally release the target straw gas pressure to cause a fault, observe the DC controls release the pressure in the system at the max of the exhaust MFC (500 sccm)</div>
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<div class="x_x_elementToProof">Re-pressurized the target straw circuit to 40 psi, observed the DC controls clear the target straw low pressure fault and return to automated control and return to the last set point (47 mbar)</div>
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Bob can now leak check the system. I'll contact Bob on Monday about operating the system.</div>
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<br>
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Regards,</div>
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Marc</div>
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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> Marc Mcmullen <mcmullen@jlab.org><br>
<b>Sent:</b> Thursday, November 21, 2024 8:53 AM<br>
<b>To:</b> Bob Miller <rmiller@jlab.org>; Gabriel Charles <gabriel.charles@ijclab.in2p3.fr><br>
<b>Cc:</b> Denny Insley <dinsley@jlab.org>; Marc Mcmullen via dsg-hallb_gas <dsg-hallb_gas@jlab.org><br>
<b>Subject:</b> Re: Purge the gas line</font>
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<div dir="ltr">Hi Gabriel,</div>
<div dir="ltr"><br>
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<div dir="ltr">We are currently integrating the ALERT DC gas controls used in the EEL to the cRIO controller in the hall. We have read back from the sensors. Right now we are working on the solenoid control for ALERT and BoNuS. Then we will start pressure control
of the panel. </div>
<div dir="ltr"><br>
</div>
<div dir="ltr">It may take a few days to get it up and running. </div>
<div dir="ltr"><br>
</div>
<div dir="ltr">After that Bob will do some leak checks. </div>
<div dir="ltr"><br>
</div>
<div dir="ltr">I’ll provide updates as the project progresses. </div>
<div dir="ltr"><br>
</div>
<div dir="ltr">Regards,</div>
<div dir="ltr"><span id="x_x_x_ms-outlook-ios-cursor"></span>Marc</div>
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<div id="x_x_x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Bob Miller <rmiller@jlab.org><br>
<b>Sent:</b> Thursday, November 21, 2024 8:36:24 AM<br>
<b>To:</b> Marc Mcmullen <mcmullen@jlab.org>; Gabriel Charles <gabriel.charles@ijclab.in2p3.fr><br>
<b>Cc:</b> Denny Insley <dinsley@jlab.org><br>
<b>Subject:</b> Re: Purge the gas line</font>
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Hi All,</div>
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<br>
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I have another meeting this morning, so I will not be able to attend the ALERT meeting.</div>
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Regards,</div>
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Bob Miller</div>
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Hall B Lead Engineer</div>
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(757) 822-9586</div>
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<div id="x_x_x_x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Gabriel Charles <gabriel.charles@ijclab.in2p3.fr><br>
<b>Sent:</b> Thursday, November 21, 2024 8:26 AM<br>
<b>To:</b> Marc Mcmullen <mcmullen@jlab.org><br>
<b>Cc:</b> Bob Miller <rmiller@jlab.org>; Denny Insley <dinsley@jlab.org><br>
<b>Subject:</b> [EXTERNAL] Re: Purge the gas line</font>
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<div>Hi Marc,<br>
</div>
<div><br>
</div>
<div> We will have an ALERT meeting today where I'd like to report on your progress with the gas system for ALERT.<br>
</div>
<div> Can you give me an update of what you've been able to complete this week, please?<br>
</div>
<div> Sometimes Bob attend the meeting too, so if you've already agreed that Bob will give the update, don't bother sending me an email.<br>
</div>
<div><br>
</div>
<div>Have a nice day,<br>
</div>
<div>--<br>
Gabriel CHARLES<br>
IJCLab/IN2P3/CNRS, University Paris-Saclay<br>
+33 1 69 15 64 42<br>
Pictures about detectors:<br>
https://www.instagram.com/particledetectors/</div>
<div><br>
</div>
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<div><b>De: </b>"Marc Mcmullen" <mcmullen@jlab.org><br>
<b>À: </b>"Gabriel Charles" <gabriel.charles@ijclab.in2p3.fr><br>
<b>Cc: </b>"Bob Miller" <rmiller@jlab.org>, "Denny Insley" <dinsley@jlab.org>, "Marc Mcmullen via dsg-hallb_gas" <dsg-hallb_gas@jlab.org><br>
<b>Envoyé: </b>Vendredi 15 Novembre 2024 20:13:52<br>
<b>Objet: </b>Re: Purge the gas line<br>
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<div dir="ltr">Hi Gabriel,</div>
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<div dir="ltr">The panel was moved to hall b earlier this week. DSG is working with hall b engineering and mechanical to connect the instrumentation and get the system running. </div>
<div dir="ltr"><br>
</div>
<div dir="ltr">I expect this to be done in the early part of the coming week. </div>
<div dir="ltr"><br>
</div>
<div dir="ltr">We will also have the pressure and flows (for the ALERT DC and Target straw) sent to archived process variables which you can monitor through Mya. </div>
<div dir="ltr"><br>
</div>
<div dir="ltr">I’ll send an update next week as the system progresses. </div>
<div dir="ltr"><br>
</div>
<div dir="ltr">Regards,</div>
<div dir="ltr">Marc</div>
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<div id="x_x_x_x_x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Gabriel Charles <gabriel.charles@ijclab.in2p3.fr><br>
<b>Sent:</b> Thursday, November 14, 2024 10:25:45 PM<br>
<b>To:</b> Marc Mcmullen <mcmullen@jlab.org><br>
<b>Cc:</b> Bob Miller <rmiller@jlab.org>; Denny Insley <dinsley@jlab.org>; Marc Mcmullen via dsg-hallb_gas <dsg-hallb_gas@jlab.org><br>
<b>Subject:</b> [EXTERNAL] Re: Purge the gas line</font>
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<div>Hello,<br>
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<div> As you probably know the panel is now inside the Hall and ready to be set.<br>
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<div> The temporary setup installed by Bob was very helpful but of course the lack of controls forces us to check that everything is fine everyday.<br>
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<div> Even when I was on site, I did not do it properly: I did see a bottle was empty and then didn't see that the flow meter was closed.<br>
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<div> It is anyway not possible to know immediately when a bottle is empty. With the new system this kind of problem will be avoided.<br>
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<div> Hence I'm going to wait that the gas system is accessible via EPICS. So please, whevener you have time, can you work on it?</div>
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<div> Bob, right now everything is opened as I was still running HV tests tonight. HV are now off.<br>
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<div> Can you close the flow meter please? And then fill the Hall pipes with N2 at twice the atmospheric pressure. That will keep water away and speed up the restart process.<br>
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<div>See you when the beam will be in Hall B,<br>
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<div>--<br>
Gabriel CHARLES<br>
IJCLab/IN2P3/CNRS, University Paris-Saclay<br>
+33 1 69 15 64 42<br>
Pictures about detectors:<br>
https://www.instagram.com/particledetectors/</div>
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<div><b>De: </b>"Marc Mcmullen" <mcmullen@jlab.org><br>
<b>À: </b>"Bob Miller" <rmiller@jlab.org>, "Gabriel Charles" <gabriel.charles@ijclab.in2p3.fr><br>
<b>Cc: </b>"Denny Insley" <dinsley@jlab.org>, "Marc Mcmullen via dsg-hallb_gas" <dsg-hallb_gas@jlab.org><br>
<b>Envoyé: </b>Mercredi 6 Novembre 2024 16:39:43<br>
<b>Objet: </b>Re: Purge the gas line<br>
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<div class="x_x_x_x_x_x_elementToProof">Hi Bob,</div>
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<div class="x_x_x_x_x_x_elementToProof">I am working on integrating the ALERT DC controls software to the cRIO in the hall. It will take a few days to get it up and running and tested.</div>
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<div class="x_x_x_x_x_x_elementToProof">Whenever the panel moves, Brian will asses the hardware connections needed and get with DSG staff so the pressure sensors, the solenoid, and the pump are connected as I am working on the software.</div>
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<div class="x_x_x_x_x_x_elementToProof">Please keep us updated on the panel movement.</div>
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<div class="x_x_x_x_x_x_elementToProof">Regards,</div>
<div class="x_x_x_x_x_x_elementToProof">Marc</div>
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<div id="x_x_x_x_x_x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Bob Miller <rmiller@jlab.org><br>
<b>Sent:</b> Wednesday, November 6, 2024 10:20 AM<br>
<b>To:</b> Gabriel Charles <gabriel.charles@ijclab.in2p3.fr><br>
<b>Cc:</b> Denny Insley <dinsley@jlab.org>; Marc Mcmullen <mcmullen@jlab.org><br>
<b>Subject:</b> Re: Purge the gas line</font>
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<div class="x_x_x_x_x_x_x_elementToProof">Hi Denny,</div>
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<div class="x_x_x_x_x_x_x_elementToProof">When do you expect to install the gas panel next to ALERT?</div>
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<div class="x_x_x_x_x_x_x_elementToProof">Hi Marc,</div>
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<div class="x_x_x_x_x_x_x_elementToProof">When do you expect the gas panel to be functional in the Hall?</div>
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<div class="x_x_x_x_x_x_x_elementToProof">Thanks,</div>
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<div>Bob Miller</div>
<div>Hall B Lead Engineer</div>
<div>(757) 822-9586</div>
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<div id="x_x_x_x_x_x_x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Gabriel Charles <gabriel.charles@ijclab.in2p3.fr><br>
<b>Sent:</b> Wednesday, November 6, 2024 8:44 AM<br>
<b>To:</b> Bob Miller <rmiller@jlab.org><br>
<b>Subject:</b> [EXTERNAL] [ALERT] Purge the gas line</font>
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<div>Hi Bob,</div>
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As we discussed yesterday, would it be possible to start purging the Hall B gas line? As per the current schedule, ALERT detector will be at the beam level on Thursday. It's probably a good point to start purging then.</div>
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In case the installation is taking longer we could stop purging over the weekend and leave 2 atmospheric pressure in the tube.</div>
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What do you think?</div>
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Have a nice day,</div>
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--<br>
Gabriel CHARLES<br>
IJCLab/IN2P3/CNRS, University Paris-Saclay<br>
+33 1 69 15 64 42</div>
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