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User name V. Sulkosky
Log entry time 22:26:37 on November 02, 2009
Entry number 297209
This entry is a followup to: 297198
keyword= R-HRS S1 and S2 Estimate of Noise Update
Here are the updated estimates after I have adjusted the HV's. The S1
ADC amplitudes are aligned around 500 channels and S2 is now about 400
channels.
Here are the results for S1:
S1 Channel Ratio
++++++++++++++++++++++++++++
1L 29.8 %
2L 18.5 %
3L 49.7 %
4L 45.3 %
5L 51.8 %
6L 25.0 %
1R 19.9 %
2R 30.9 %
3R 0.8 %
4R 4.7 %
5R 7.0 %
6R 15.2 %
Some of the channels improved considerably, but there are still several
channels especially on the left side that are bad.
Here are the results for S2:
S1 Channel Ratio
++++++++++++++++++++++++++++
1L 6.4 %
2L 4.6 %
3L 4.8 %
4L 7.1 %
5L 8.0 %
6L 21.1 %
1R 1.7 %
2R 1.8 %
3R 0.9 %
4R 1.9 %
5R 2.5 %
6R 2.8 %
S2 on the other hand is not too bad, except the sixth one on the left
side.
Using the same HV as in the spring, the S2 amplitudes used
to be aligned around channel 700.
Now they were considerably less.
I do not understand why there was such a large change.
A copy of this log entry has been emailed to: rsubedi,bogdanw,xiaochao,reimer