Main INDEX
Monthly INDEX
PREV
NEXT
User name Jack
Log entry time 21:07:15 on March23,2001
Entry number 59184
keyword=A2 PMT 7 on Left Arm.
It looks like the PMT signal from A2 7 shows signs of distress somewhere. The
rate of "pulses" is low and have a lot of ringing on them. I suspect it is in the base.
However, I looked at the end of the 37' cables to the 2nd level of electronics. The
possibility exists that the ringing may be from a bad shield connection on one of the
two cables. However, the low rate of "pulses" makes me think this is not the
problem. I forgot to look at the PMT directly (we were trying to get out of the hall).
Next time someone goes in they may want to have a spare tube, base, cable, etc.
on hand when they go in.