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User name A. Camsonne
Log entry time 21:40:06 on February 19, 2013
Entry number 385792
Followups:
keyword=Electron detector source test : Compton electron detector chamber to not be open
I disable most of the hot strips and lowered threshold. Put the amplifier
discriminator board on plane C. With HV, noise seemed to be around 8 mV.
Thresholds seems higher not sure if there is an offset. Will run with those.
Made a small script to record the threshold in
/home/compton/camsonne/script on comptom computer getthreshold.sh and
SetThres.sh
COM_DE_THRSET1 20
COM_DE_THRSET2 19
COM_DE_THRSET3 22
COM_DE_THRSET4 19
COM_DE_THRSET5 18
COM_DE_THRSET6 22
COM_DE_THRSET7 22
COM_DE_THRSET8 19
the file loaded is LowThres.txt
with detector out from source there is 200 Hz of noise
with detector lowered in front of the source there is about 800 Hz with
single plane trigger.
Started run 25156, with 2 out of 4 planes trigger, trigger rate is about 1 Hz
A copy of this log entry has been emailed to: rob@jlab.org