Run 32488 channels in use
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max amp histo, threshold 5#sigma
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drift time, threshold 5#sigma
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drift time (zoomed in), threshold 5#sigma
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resolution, threshold 5#sigma
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drift time for all channels in each of 3 fadcs
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drift time for all channels in each HVB
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resolution, using different tzero for each fadc, threshold 5#sigma
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resolution, ch 101 (A4 ch 6)
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Run 32495 channels in use
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drift time, CF endplate, threshold 5#sigma
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drift time, center, threshold 5#sigma
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drift time, Al endplate, threshold 5#sigma
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Switched HVBs 3 and 5 (all electronics swapped at the chamber)
drift time, Al endplate, threshold 5#sigma
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drift time, CF endplate, threshold 5#sigma
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drift time, threshold 5#sigma
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drift time, all hits belong to track
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drift time, early hits reassigned to t0, all hits belong to track
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Event pics
These data (run 32488) were recorded using a filter in the event readout list, so only channels with 6 consecutive samples exceeding a threshold of 116 were recorded, provided that 5 channels had 8 consecutive samples over 124. (pedestal ~ 60, #sigma ~ 16)
Run 32488 events in ch 71
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Run 32488 events in ch 71 zoomed
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Ch 71 amplitude for events with and without zero-crossings (after pedestal subtraction)
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Channels with a hit before a zero-crossing in ch 71 in the same event
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Channels with a hit before another channel with a zero-crossing in the same event
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Amplitude of hit channels where hit precedes zero-crossing in another channel
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Compare resolution with channels 68 (on noisy board E4) and 148 (similar position on different board E14)
Run 32488 channel numbers
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Looking to see if zero-crossings are linked to hits in other channels. Zero-crossing time is the sample number when the adc content drops to 0 - pedestal is not subtracted. Pedestals are set to approx 60, with pedestal width ~ 16.
Run 32488 channels in use
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Channels with hit < 10 samples before zero-crossing in another channel
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Channels with tracked hit < 10 samples before zero-crossing in another channel
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Run 32495 channels in use
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Channels with hit < 10 samples before zero-crossing in another channel
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Channels with tracked hit < 10 samples before zero-crossing in another channel. Red spot = hit in 69, zero xing in 67.
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Switched HVBs 3 and 5 (first is at top, increase top to bottom, L to R)
Channels with hit < 10 samples before zero-crossing in another channel
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Channels with tracked hit < 10 samples before zero-crossing in another channel.
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This run started after the CO2 had run out - more Ar reaching boards 1 and 2 (I8, I9, at the top of the chamber) and then 5 (E6)