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User name Markowitz
Log entry time 12:06:50 on June 06, 2005
Entry number 145306
keyword=changed software A1, A2 gains in online database directory
I set the software gains all to 1.000 in the on-line database directory
files (db_L.a1.dat and db_L.a2.dat). Armando, Bogdan and I have tried to
set the HV such that there are 100 channels per photoelectron for all
phototubes (for trigger purposes).
The gains were about .5 but varied, meaning they have not been calibrated
in software (yet) and give a mis-leading (and I hope worrisome)
impression to a casual glance.
Software gains do need to be tuned but should be accurate to 5% now.
Armando and I can work on this further today.
A copy of this log entry has been emailed to: mandrox@jlab.org, bogdanw@jlab.org