Actually we're NOT sparsifying the ADCs yet on readout. Pete has
been working on the code to look at pedestals and calculate an appropriate
readout threshold. When those look reasonable (i.e. we don't lose real
signals but we do cut pedestals), we'll use them. Maybe once a day we'll
use the configuration pedrun to read ALL ADC channels, so we have a daily
measure of the pedestals.
Karen
At 09:39 PM 1/5/2004 -0500, Adrian T Sindile wrote:
>Hi, Chi!
>
> > 1. blast.sc_cal: I am personally very excited about the calibration Pete
> > put out. In the mean time, i have the following questions:
> > adc pedestals: Adrian knows them by heart but unfortunately, they are
> > not written into blast.sc_cal. It is partly because, I guess, Pete
> > generates tdc offsets by program which does not know about
> > pedestals.
>
>Following is an email I just retrieved from Blast_Talk. In it I was
>pointing Tancredi to a file created just for this purpose.
>I stopped recording pedestals into the database, at Karen's suggestion
>(they seemed pretty stable, so it was decided to sparsify ADCs).
>
>===========================================================================
>Hi, Tancredi!
>Here is a file containing the TOF pedestals. It was created on Monday, but
>the run we looked at was 1048 (which was one of the first e-p runs after
>the last TOF gain-matching):
>
>/home/daq/blast/pro2003/analysis/macros/Raw/raw_adc_landau-1048.dat
>
>In the same directory, we also looked at more runs - file
>raw_adc_landau-3250.dat was created for cosmics run taken on Monday.
>
>Adrian
>===========================================================================
>
>
>
>Hope this helps, Chi!
>
>Adrian
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