CDC 216 channels

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Run 32488 channels in use
max amp histo, threshold 5#sigma
drift time, threshold 5#sigma
drift time (zoomed in), threshold 5#sigma
resolution, threshold 5#sigma
drift time for all channels in each of 3 fadcs
drift time for all channels in each HVB
resolution, using different tzero for each fadc, threshold 5#sigma
resolution, all straws
resolution, ch 101 (A4 ch 6)

Run 32495 channels in use
drift time, CF endplate, threshold 5#sigma
drift time, center, threshold 5#sigma
drift time, Al endplate, threshold 5#sigma

drift time, CF endplate, threshold 5#sigma
drift time, threshold 5#sigma
drift time, all hits belong to track
drift time, early hits reassigned to t0, all hits belong to track

Switched HVBs 3 and 5 (all electronics swapped at the chamber)

drift time, Al endplate, threshold 5#sigma

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
Run 32488 events in ch 71 zoomed
Ch 71 amplitude for events with and without zero-crossings (after pedestal subtraction)
First zero-crossing time
Channels with a hit before a zero-crossing in ch 71 in the same event
Channels with a hit before another channel with a zero-crossing in the same event
As left, zoomed in
Amplitude of hit channels where hit precedes zero-crossing in another channel

Compare resolution with channels 68 (on noisy board E4) and 148 (similar position on different board E14)

Run 32488 channel numbers
Resolution ch 68
Resolution ch 148

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
Channels with hit < 10 samples before zero-crossing in another channel
Channels with tracked hit < 10 samples before zero-crossing in another channel


Run 32495 channels in use
Channels with hit < 10 samples before zero-crossing in another channel
Channels with tracked hit < 10 samples before zero-crossing in another channel. Red spot = hit in 69, zero xing in 67.