RICH trips. HV reduced

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User name cusanno

Log entry time 09:50:58 on October 30, 2008

Entry number 245554

keyword=RICH trips. HV reduced

RICH tripped, I do not know at what time. This is probably due to the absence of grid voltage, so when there is beam the RICH chamber got charged up and eventually it trips toward the anode.

I set the HV down to 2200 V instead of 2300 V and look at it.

A copy of this log entry has been emailed to: evaristo.cisbani@iss.infn.it, camsonne@jlab.org