Difference between revisions of "CDC finding signal duration"
Line 46: | Line 46: | ||
|[[Image:run_31809_event_38_dy.png|thumb|x300px|]] | |[[Image:run_31809_event_38_dy.png|thumb|x300px|]] | ||
|[[Image:run_31809_event_94_dy.png|thumb|x300px|]] | |[[Image:run_31809_event_94_dy.png|thumb|x300px|]] | ||
+ | |} | ||
+ | |||
+ | Peaklength requires drop of 10sigma between chunks of 4 samples | ||
+ | {| border="0" cellpadding="2" | ||
+ | |[[Image:run_31809_pklength_track105.png|thumb|x250px|run 31809 (horizontal)]] | ||
+ | |[[Image:run_31811_pklength_track105.png|thumb|x250px|run 31811 (tilted 30deg)]] | ||
+ | |[[Image:run_31810_pklength_track105.png|thumb|x250px|run 31810 (tilted 45deg)]] | ||
+ | |} | ||
+ | |||
+ | Peaklength requires drop of 8sigma between chunks of 4 samples | ||
+ | {| border="0" cellpadding="2" | ||
+ | |[[Image:run_31809_pklength_track106.png|thumb|x250px|run 31809 (horizontal)]] | ||
+ | |[[Image:run_31811_pklength_track106.png|thumb|x250px|run 31811 (tilted 30deg)]] | ||
+ | |[[Image:run_31810_pklength_track106.png|thumb|x250px|run 31810 (tilted 45deg)]] | ||
|} | |} |
Revision as of 14:16, 10 July 2012
Stripes are +/- 1sigma and 2sigma.
Try this: search backwards from end sample, looking for change in ADC value going below -2sigma (or -1sigma if -2sigma not found, or min value if -1sigma not found), then search forwards until change in ADC value goes +ve.
That gives the following for the above events: (run 31810) 260, 258, 295, 293, 264 and (run 31809) 242, 230, 281, 301, 268
Changed this to search for change in ADC value going below -1sigma, or min value if -1sigma not found, then search forwards until change in value goes +ve
Look at difference between chunks of 2 and 4 samples, summed, stripes are +/- 1, 2, 4, 8, 10sigma.
Peaklength requires drop of 10sigma between chunks of 4 samples
Peaklength requires drop of 8sigma between chunks of 4 samples