[Dsg-hallb_magnets] Solenoid Polarity Reversal

[Brian Eng]

Ruben,

Attached are the timestamped notes that I took when Pablo and I were testing the solenoid earlier today in the window Bob had between CND installation.

End result: if you wait long enough (I think at least 5 minutes should be okay [~2 minutes worked once, but tripped the other time]) after the MPS has ramped to "zero" and then turn the MPS off you can switch the polarity without any fast dumps.

Also, unexpectedly, switching the polarity when the MPS is off will clear any QD faults remotely.

--
Brian Eng
Detector Support Group
757-269-6018

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