[d2n-analysis-talk] S2m Right TDCs

[David Flay]

Hi Brad,

Attached is a few plots taking a closer look at the spike at ~ 170 ns in
the S2m R-TDC times.

The first plot shows an overlay of the ADC for PMT 7 with one-track, dead
time pulse removed, PMT 7 firing (TDC >0) and a T3 cut (black line), with
the plot having the same cuts plus a cut on the TDC time ~ 170ns (red
line).  The blue line includes a cut > 0 on the ADC.

The second plot shows the 'inverse' of the first -- TDC for PMT 7 with the
same cuts, (black) along with a cut > 550 in the raw ADC (red).

This shows where the spike in the S2m TDC times comes from -- (largely)
the spike at zero in the ADC.



-------------------------------------------------
David Flay
Physics Department
Temple University
Philadelphia, PA 19122

office: Barton Hall, BA319
phone: (215) 204-1331

e-mail: flay at jlab.org
            flay at temple.edu

website: http://www.jlab.org/~flay
              http://quarks.temple.edu
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