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User name clasie
Log entry time 23:47:57 on December 10, 2004
Entry number 92725
keyword=h1x11- under voltage
h1x11- has tripped a few times today and has been noted on the runsheets.
Almost every run has been affected since we started running at 8pm. The
HV alarm would sound and the PMT would show under voltage. The voltage
would be lower than the setpoint by 80-100V. After approx 10min the PMT
would be fine again.
Turning the PMT off, waiting for the voltage to go to zero, waiting a few
more seconds, and then turning the PMT back on did not help. It appears
to just need time.