User name V. Sulkosky
Log entry time 09:50:25 on November 7,2007
Entry number 212922
keyword=Left Gas Cerenkov PMT # 10Figure 1 shows the ADC (ped subtracted) spectra for the left gas
Cerenkov with full statistics for run # 1992. The signal for PMT #10
is alive and well. Hence, part of the problem was statistics.
With full statistics, I can easily see the single photoelectron peak,
which is centered around channel 311. So the HV for this PMT is still
too high.
Figure 2 shows the ADC spectrum for PMT #10 with a cut on track x and
track y in the Cerenkov detector plane on the mirror location.
Further, the HVs for PMT's 2, 4, 7, and 8 are also slightly too high,
but within 20-30 channels of the other PMTs (centered around channel
164).
FIGURE 1
FIGURE 2
