Difference between revisions of "CDC time spikes"
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− | 2-d histograms of ADC value= | + | 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. | 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). | (the histos in each image (set of plots) are arranged as in the prototype but the sets of plots are not). | ||
{| border="0" cellpadding="2" | {| border="0" cellpadding="2" | ||
− | |[[Image: | + | |[[Image:run_31955_xthr_p50_2d_0.png|thumb|x125px|straw 0 ]] |
− | |[[Image: | + | |[[Image:run_31955_xthr_p50_2d_1.png|thumb|x125px|straw 1 ]] |
− | |[[Image: | + | |[[Image:run_31955_xthr_p50_2d_2.png|thumb|x125px|straw 2 ]] |
− | |[[Image: | + | |[[Image:run_31955_xthr_p50_2d_3.png|thumb|x125px|straw 3 ]] |
− | |[[Image: | + | |[[Image:run_31955_xthr_p50_2d_4.png|thumb|x125px|straw 4 ]] |
− | |[[Image: | + | |[[Image:run_31955_xthr_p50_2d_5.png|thumb|x125px|straw 5 ]] |
|} | |} | ||
{| border="0" cellpadding="2" | {| border="0" cellpadding="2" |
Revision as of 11:29, 19 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)
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).