[Hallb-engineering] [New Logentry] Follow-up Re: Cryo Target Alarms

[kashy at jlab.org]

Logentry Text:
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Looking at this mornings issue with PV8522SR opening continuously, we noticed that there was an event on May 10 and it was determined to be beam mis-steering.

It may have been this, but there was also a strange motion of the solenoid cooldown valve. 
We found that the setpoint of PV8522SCD was 1.37atm and this is very close to the operating point for PV8522SR (1.35) the SCD setpoint should have been 1.55. 

We reset it to 1.55.

The change to 1.37 happened on April 11 when we had the issue at ESR with the 4K return valve. 


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This is a plain text email for clients that cannot display HTML.  The full logentry can be found online at https://logbooks.jlab.org/entry/4303557
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