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User name xqian
Log entry time 15:11:03 on November 04, 2008
Entry number 246668
This entry is a followup to: 246489
keyword=BigBite Wire Chamber Update
Chamber-2 and Chamber-3 can run with 4.4V threshold now. The original
threshold is 3.5V. We are still not sure what reason causes this problem.
Thus, at this stage, we will keep the threshold at 4.4V.
In the control access later, we will lower the voltage on the power line
of the A/D cards from 6.1V to 6.0V. Then, we will try to see if we can
lower our threshold.
Here is the plot of the wire hit pattern with cosmic with 3.5+4.4+4.4V
threshold. Everything looks fine.