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<div>The RICH compressor has been turned off for the break.</div>
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<div>Bob</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Tyler Lemon <tlemon@jlab.org><br>
<b>Sent:</b> Tuesday, December 21, 2021 10:03 AM<br>
<b>To:</b> Marco Contalbrigo <mcontalb@fe.infn.it>; Bob Miller <rmiller@jlab.org><br>
<b>Cc:</b> dsg-hallb_rich@jlab.org <dsg-hallb_rich@jlab.org>; Mirazita Marco <marco.mirazita@lnf.infn.it><br>
<b>Subject:</b> Re: [EXTERNAL] 1 MAJOR alarm(s): GAS (fwd)</font>
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Hi Marco,</div>
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It looks like the air-cooling compressor was turned off since both airflow values and the pressure in the buffer tank have all dropped to ~zero. I'm guessing/hoping that this was done intentionally since from logbook entries, physics data taking has concluded
in preparation for the Christmas shutdown.<br>
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As a side note, I can see that everything else is still working right, and that RICH is still getting ~40 slm of nitrogen.</div>
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Hi Bob,</div>
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Has the RICH compressor been turned off? If this isn't intentional, do you have any news as to the cause?</div>
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Thanks!</div>
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Tyler<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> Marco Contalbrigo <mcontalb@fe.infn.it><br>
<b>Sent:</b> Tuesday, December 21, 2021 9:54 AM<br>
<b>To:</b> Tyler Lemon <tlemon@jlab.org><br>
<b>Cc:</b> dsg-hallb_rich@jlab.org <dsg-hallb_rich@jlab.org>; Mirazita Marco <marco.mirazita@lnf.infn.it><br>
<b>Subject:</b> [EXTERNAL] 1 MAJOR alarm(s): GAS (fwd)</font>
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<div class="x_PlainText">Ciao Tyler,<br>
if I am not mistaken, Valery is on vacation. I and<br>
Marco are travelling today. May you (or DSG) follow<br>
the issue with the RICH interlock ?<br>
Thanks, Marco.<br>
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---------- Forwarded message ----------<br>
Date: Tue, 21 Dec 2021 09:00:24 -0500<br>
From: clas12-alarm-notifier@jlab.org<br>
To: mcontalb@fe.infn.it<br>
Subject: 1 MAJOR alarm(s): GAS<br>
<br>
PV: B_DET_RICH_INTLK_AIRFLOW2 - Description: MAJOR alarm: B_DET_RICH_INTLK_AIRFLOW2 - Alarm Time: 2021/12/21 09:00:23.981 - Current Severity: MAJOR - Current Status: LOLO_ALARM - Alarm Severity: MAJOR - Alarm Status: LOLO_ALARM - Alarm Value: 199.9060156932005<br>
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