[d2n-analysis-talk] Scintillator Time Offset Checks/Beta Correction

[Brad Sawatzky]

On Sat, 06 Mar 2010, David Flay wrote:

> Also -- I've been looking at the ADCs (for each paddle, so a sum of L & R)
> and considering GC > 0 (red), and GC == 0 (blue) cuts.  I can 'pick out' a
> peak using GC > 0, but the whole spectrum is unaffected by GC ==0 ... I
> tried using this result to 'clean up' my 2D PR plot (OR-ing together all
> these histos, choosing events for < 400 in the scintillators)... doesn't
> change anything.  I attached the *.pdf of the paddle ADCs.
> 
> I'm not absolutely certain of this being the right way of doing it...
> wouldn't that main peak in the ADC of the scintillators be due to
> electronics, setting some threshold?

I think you're doing the right thing -- doesn't look like it's much help
on PID though.  Oh well, it was worth a shot...

I'll be interested to see how it looks on the BigBite side.  I'm a
little puzzled as to why it would work there (assuming that it does)
and not work on the HRS side...

-- Brad

-- 
Brad Sawatzky, PhD <brads at jlab.org>  -<>-  Jefferson Lab / Hall C / C111
  Ph: 757-269-5947 -<>- Pager: 757-584-5947 -<>- Fax: 757-269-5235
The most exciting phrase to hear in science, the one that heralds new
  discoveries, is not "Eureka!" but "That's funny..."   -- Isaac Asimov