[dsg-hallb_rich] [EXTERNAL] 1 MAJOR alarm(s): GAS (fwd)

[Tyler Lemon]

Hi Marco,

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.

As a side note, I can see that everything else is still working right, and that RICH is still getting ~40 slm of nitrogen.

Hi Bob,
Has the RICH compressor been turned off? If this isn't intentional, do you have any news as to the cause?

Thanks!
Tyler


________________________________
From: Marco Contalbrigo <mcontalb at fe.infn.it>
Sent: Tuesday, December 21, 2021 9:54 AM
To: Tyler Lemon <tlemon at jlab.org>
Cc: dsg-hallb_rich at jlab.org <dsg-hallb_rich at jlab.org>; Mirazita Marco <marco.mirazita at lnf.infn.it>
Subject: [EXTERNAL] 1 MAJOR alarm(s): GAS (fwd)

Ciao Tyler,
if I am not mistaken, Valery is on vacation. I and
Marco are travelling today. May you (or DSG) follow
the issue with the RICH interlock ?
Thanks, Marco.

---------- Forwarded message ----------
Date: Tue, 21 Dec 2021 09:00:24 -0500
From: clas12-alarm-notifier at jlab.org
To: mcontalb at fe.infn.it
Subject: 1 MAJOR alarm(s): GAS

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

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