CDC time spikes
Prototype at 2100V, 50/50 Ar/CO2
Trigger signals
Histograms of threshold-crossing bins in central bank of 16 straws, different thresholds (ignore the histo titles)
Histograms of ADC value=100 threshold-crossing bins in individual straws (search started at bin 160)
Same data after more normal analysis (Search forward to find pedestal+5sigma crossing, then backwards to find 4sigma and then 1sigma crossings)
2-d histograms of ADC value=mean pedestal+50 (= c. 105 to 110) threshold-crossing bins in each straw vs same for one particular straw
Data are plotted for events with non-zero threshold-crossing in both straws.
(the histos in each image (set of plots) are arranged as in the prototype but the sets of plots are not).
File:Run 31955 xthr p50 2d 2.png straw 2 |
File:Run 31955 xthr p50 2d 3.png straw 3 |
File:Run 31955 xthr p50 2d 4.png straw 4 |
File:Run 31955 xthr p50 2d 5.png straw 5 |
Noise run (triggered on 20us pulser) ADC=100 crossing bins
Noise run (triggered on scintillator when prototype was not above/beneath it) ADC=100 crossing bins
Noise run (triggered on scintillator when prototype was not above/beneath it) ADC=100 crossing bins 2-d histograms of ADC value=100 threshold-crossing bins in each straw vs same for one particular straw Data are plotted for events with non-zero threshold-crossing in both straws. (the histos in each image (set of plots) are arranged as in the prototype but the sets of plots are not).