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User name V. Sulkosky
Log entry time 11:04:30 on August 12, 2008
Entry number 242043
keyword=S2m and A1 ready for Cosmic Checkout
Both the A1 and S2m detectors have been installed and cabled for the
Transversity experiment. I have reformed T3 by using the "OR" of 16
S2m paddles. The S2m signal arrives about 10 ns before the S1 signal.
We probably will need to delay S1 about 10-15 ns more. The width of the
S1 signal was about 120 ns. I adjusted the S2m width to be about the same.
I checked the T3 cosmic rate and found it to be about 8 Hz.
Next we will begin the cosmic checkout to verify cabling to the ADCs, TDCs
and scaler channels. Then we will check pedestals and timing offsets for
the scintillators. At some point, we will turn on the pion rejector HVs
to check the ADC cabling and adjust pedestals.
A copy of this log entry has been emailed to: rom@jlab.org,kalyan@jlab.org,camsonne@jlab.org,ycwang@jlab.org,bogdanw@jlab.org