[dsg-hallb_rich] [New Logentry] RICH Sector 1 gas system readout chassis replaced

[Patrizia Rossi]

Very well! Thanks
Do we have to order now another spare?

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From: dsg-hallb_rich <dsg-hallb_rich-bounces at jlab.org> on behalf of tlemon at jlab.org <tlemon at jlab.org>
Date: Thursday, October 13, 2022 at 11:25 AM
To: dsg-hallb_rich at jlab.org <dsg-hallb_rich at jlab.org>
Subject: [dsg-hallb_rich] [New Logentry] RICH Sector 1 gas system readout chassis replaced
RICH Sector 1 gas system readout chassis replaced<https://logbooks.jlab.org/entry/4057396>

  *   Edit<https://logbooks.jlab.org/entry/4057396/edit?destination=email/send>
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Lognumber 4057396<https://logbooks.jlab.org/entry/4057396>. Submitted by tlemon<https://logbooks.jlab.org/user/tlemon> on Thu, 10/13/2022 - 11:24<https://logbooks.jlab.org/entries?start_date=1665671041&end_date=1665678241&book=DSGLOG&book=HBLOG&book=RICH>.
Logbooks:
DSGLOG<https://logbooks.jlab.org/book/dsglog> HBLOG<https://logbooks.jlab.org/book/hblog> RICH<https://logbooks.jlab.org/book/rich>
Entry Makers:
mirazita

RICH Sector 1 cooling air flow, cooling system buffer tank, and nitrogen purge flow reading dropped out (incorrectly read zero).

In the past a hard reboot of the system resolved the issue but the failure kept occurring after reboots.

The expansion gas system readout chassis that monitors those sensors was swapped out for a spare, resolving the issue.

RICH S1 hardware interlocks are now back to normal operating conditions.

Marco Mirazita has turned HV and LV back on for the detector.
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