[Dsg-hallb_magnets] Solenoid Instrumentation

[David Kashy]

All,
TD8522TR over the years when it gets down below 5K often reads back 0.0K This is known and not a problem.

PT8565 and 8563 are reading 2.3 atm and a bit above what would be ideal but I think it is real and accurate. The pressure in that leg of the circuit is a bit higher than ideal. It could be released but has not been a problem and we can run with gas in the circuit.

PT8561 being 1.5 atm is OK and is likely because ESR has shut the warm helium to the Hall. We can run like this but to warm up or purge targets the warm helium supply valve will need to be opened.

TR8610 at 4.97 is exactly where it should be I'm surprised it has been given a fail

PT8675A at 1.1 is exactly where it should be I'm surprised it has been given a fail

ZS86108US_BL_B  2248.00 lb      FAIL
This looks to be a real failure of some sort. note 2248lb is 1000kg and may be the maximum of the load cell. I don't think it is real because no other Z force sensors have increased. Could it be a broken wire or a malfunction of the controller? I'm not concerned about running with it not reading properly (which has been 0.0).

Dave
________________________________
From: Probir Ghoshal <ghoshal at jlab.org>
Sent: Friday, April 22, 2022 10:24 AM
To: Brian Eng <beng at jlab.org>; dsg-hallb magnets <dsg-hallb_magnets at jlab.org>; David Kashy <kashy at jlab.org>; Nick Sandoval <sandoval at jlab.org>; Denny Insley <dinsley at jlab.org>
Subject: Re: Solenoid Instrumentation

Dear Dave, Nick, Denny

Could you please the fail tags to conform the tests.
Regards
Probir

________________________________
From: Brian Eng <beng at jlab.org>
Sent: Friday, April 22, 2022 10:21 AM
To: dsg-hallb magnets <dsg-hallb_magnets at jlab.org>
Cc: Probir Ghoshal <ghoshal at jlab.org>
Subject: Solenoid Instrumentation

https://logbooks.jlab.org/entry/3991729

Are these failures okay/expected?

If so can someone make a follow-up entry or comment saying so?

Thanks
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