[dsg-hallb_rich] Hardware interlock problem

[Benjamin Raydo]

I tried to cycle HV off/on for slot 10 channel 0  (Tile#2) and it did nothing. Can you try power cycling/rebooting HVRICH1 ?
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From: dsg-hallb_rich <dsg-hallb_rich-bounces at jlab.org> on behalf of Benjamin Raydo via dsg-hallb_rich <dsg-hallb_rich at jlab.org>
Sent: Sunday, June 1, 2025 7:49 PM
To: Valery Kubarovsky via dsg-hallb_rich <dsg-hallb_rich at jlab.org>; Valery Kubarovsky <vpk at jlab.org>; Tyler Lemon <tlemon at jlab.org>
Cc: Nathan Baltzell <baltzell at jlab.org>; Christopher Dilks <dilks at jlab.org>
Subject: Re: [dsg-hallb_rich] Hardware interlock problem

The missing scalers are all associated with HV Slot 10 - see attachement. I don't know for sure, but I think the HV stats may be frozen for this slot - I'm looking at it now to confirm...if true then the HV may really be off.

Ben
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From: dsg-hallb_rich <dsg-hallb_rich-bounces at jlab.org> on behalf of Tyler Lemon via dsg-hallb_rich <dsg-hallb_rich at jlab.org>
Sent: Sunday, June 1, 2025 7:38 PM
To: Valery Kubarovsky via dsg-hallb_rich <dsg-hallb_rich at jlab.org>; Valery Kubarovsky <vpk at jlab.org>; Tyler Lemon <tlemon at jlab.org>
Cc: Nathan Baltzell <baltzell at jlab.org>; Christopher Dilks <dilks at jlab.org>
Subject: Re: [dsg-hallb_rich] Hardware interlock problem


Besides the S4 humidity sensors, everything else looks fine.
I am confident that the detector is still getting N2 flow based on the readings from the nitrogen flow meter and nitrogen supply panel pressures (circled in blue on attached).

Since it's just the humidity sensors that stopped suddenly, I suspect that the 5 V power supply in the cRIO chassis powering the humidity sensors died. I'm not able to connect to the monitoring screen to verify this (LabVIEW is loading really slowly) but will try again from my office tomorrow morning.

Since everything else with that cRIO looks fine, it can probably wait until the next maintenance day to replace the power supply or investigate further in the hall if needed.

-Tyler



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From: dsg-hallb_rich <dsg-hallb_rich-bounces at jlab.org> on behalf of Tyler Lemon via dsg-hallb_rich <dsg-hallb_rich at jlab.org>
Sent: Sunday, June 1, 2025 6:58 PM
To: Valery Kubarovsky via dsg-hallb_rich <dsg-hallb_rich at jlab.org>; Valery Kubarovsky <vpk at jlab.org>
Cc: Nathan Baltzell <baltzell at jlab.org>; Christopher Dilks <dilks at jlab.org>
Subject: Re: [dsg-hallb_rich] Hardware interlock problem

I'll take a look.
-Tyler


________________________________
From: dsg-hallb_rich <dsg-hallb_rich-bounces at jlab.org> on behalf of Valery Kubarovsky via dsg-hallb_rich <dsg-hallb_rich at jlab.org>
Sent: Sunday, June 1, 2025 6:53 PM
To: Valery Kubarovsky via dsg-hallb_rich <dsg-hallb_rich at jlab.org>
Cc: Nathan Baltzell <baltzell at jlab.org>; Christopher Dilks <dilks at jlab.org>
Subject: [dsg-hallb_rich] Hardware interlock problem

Hi Tyler,
We got a problem with the humidity sensors in the N2 volume of sector 4:
https://logbooks.jlab.org/entry/4388414
Please take a look as soon as possible and let us know how to fix this problem.
Regards,
Valery

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