Difference between revisions of "CDC time spikes"
From GlueXWiki
Line 25: | Line 25: | ||
|[[Image:run_31955_thr100_proto_xthr.png|thumb|x450px|ADC-value=100 crossing]] | |[[Image:run_31955_thr100_proto_xthr.png|thumb|x450px|ADC-value=100 crossing]] | ||
|} | |} | ||
+ | |||
+ | 2-d histograms of ADC value=100 threshold-crossing bins in each straw vs same for one particular straw | ||
+ | {| border="0" cellpadding="2" | ||
+ | |[[Image:run_31955_thr100_xthr_2d_0.png|thumb|x50px|ADC-value=100 crossing vs ADC-value=100 crossing in straw 0 ]] | ||
+ | |[[Image:run_31955_thr100_xthr_2d_1.png|thumb|x50px|ADC-value=100 crossing vs ADC-value=100 crossing in straw 1 ]] | ||
+ | |[[Image:run_31955_thr100_xthr_2d_2.png|thumb|x50px|ADC-value=100 crossing vs ADC-value=100 crossing in straw 2 ]] | ||
+ | |} | ||
+ | |||
+ | |||
+ | |||
Same data after more normal analysis (Search forward to find pedestal+5sigma crossing, then backwards to find 4sigma and then 1sigma crossings) | Same data after more normal analysis (Search forward to find pedestal+5sigma crossing, then backwards to find 4sigma and then 1sigma crossings) |
Revision as of 09:58, 15 November 2012
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)
2-d histograms of ADC value=100 threshold-crossing bins in each straw vs same for one particular straw
Same data after more normal analysis (Search forward to find pedestal+5sigma crossing, then backwards to find 4sigma and then 1sigma crossings)
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