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Message ID: 92     Entry time: Sat May 2 19:17:25 2015
Author: AE 
Subject: time-stamp for event reconstruction 
Some first analysis of building events to look for implants and decays

Using both DISC and slow comparator values for time-stamp (whatever is available). Clearly there are some ADC
hits with a very early value for their corresponding time-stamp, that result in negative or very large dTS
values. Probably safer to use only ADC data for now (it's likely the simple algorithm used to correlate
discriminator hits and ADC hits can not cope with current conditions of ADC hits >> DISC hits):

time_stamp_dist_disc.png

Comparing analysis of file R51_3 for the two conditions: using the Fast discriminator data when available for
low energy range, or using only the time-stamp from the ADC hits.


The first two figures (time_stamp_dist_disc.png, XY_implant_disc_R51.png) are for including DISC hits as
time-stamp for event building: some have much smaller values than corresponding ADC hits, so the event is cut
short and we see a small number of identified implants.

Second set of plots is the same data but using only the timestamp for the slow comparator of the low energy
range. The number of identified events is much higher (compare 'Integral' value of the stats box).
Attachment 1: time_stamp_dist_disc.png  18 kB  | Hide | Hide all
time_stamp_dist_disc.png
Attachment 2: evt_time_stamp_disc_R51.png  23 kB  | Hide | Hide all
evt_time_stamp_disc_R51.png
Attachment 3: XY_implant_disc_R51.png  28 kB  | Hide | Hide all
XY_implant_disc_R51.png
Attachment 4: evt_time_stamp_slowcomp_R51.png  22 kB  Uploaded Sat May 2 20:28:24 2015  | Hide | Hide all
evt_time_stamp_slowcomp_R51.png
Attachment 5: XY_implant_slowcomp_R51.png  29 kB  Uploaded Sat May 2 20:28:59 2015  | Hide | Hide all
XY_implant_slowcomp_R51.png
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