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User name R. Michaels
Log entry time 04:41:39 on July 8,2010
Entry number 330761
This entry is a followup to: 330740
keyword=strange timing affects ADC gate
More on the strange timing peaks.
It seems the L-HRS ADC gates may be shifted by a bad amount for
the abnormal timing peaks -- the ones at larger times in S2m.
See fig 1. The gas Cerenkov gets chopped.
Meanwhile, these timing shifts do not affect the ADC gate
timing on the R-HRS, see fig 2. This is using 2 ARM analysis
and is consistent with halog 330748. Statistics not that
great, I'll admit.
So we're looking for a bad module or an effect that is
a) intermmittent, not many runs affected
b) affects L-HRS ADCs and TDCs but not R-HRS.