[d2n-analysis-talk] L_s1_t_pads, L_s2_t_pads Check

[David Flay]

Hi Brad,

This morning we discussed the possible issue with the *.t_pads variable...
after printing this variable, it is clear that it seems to be returning
the wrong paddle (in both S2m and S1).  In which case, I've made some
histograms (see attached plot).

How these histograms were filled:

Since originally, we plotted say L_s1_rt_c[%d]:L_s1_t_pads[0], I filled
the histogram as:

S1TPads->Fill(L_s1_t_pads[0]); for each event.

For my own t_pads, I have:

MyS1TPads->Fill(L_s1_my_t_pads);

where, for each event when paddle k fires in S1, I do:

L_s1_my_t_pads = k;

So, my variable is declared as an scalar variable -- an Int_t, as opposed
to an array of Double_t (which is what L_s1_t_pads[] is declared as).

The same may be said for S2m.

You'll notice the distributions are different -- most notably in the S1
paddles; s2m is somewhat more consistent between my calculation and what
the analyzer generates.

>From this quick analysis, it's clear that L_s1_t_pads is grabbing the
wrong paddle that we want...



-------------------------------------------------
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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