brag and T2

From: Djamel Ouerdane (ouerdane@nbi.dk)
Date: Tue Apr 16 2002 - 13:32:32 EDT

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Hi all,

I've made a quick simulation (single pion event) and used 
BrGeantToTpcTrackCandidate for T1 and T2. I checked the histograms and got 
a doubtful plot with T2 (T1 looks ok I think) :

You can check the plot here:

http://www.nbi.dk/~ouerdane/T2PadRow.gif

The simulation was using the TPC calibration parameters from run 5609. I 
could check the same histogram with real data but before the tracking was 
done. I could not do it after since the pad information is not propagated 
by default. Anyway, the real data didn't show this gap on the left side.

Any idea why ? I suspect it comes from brag but TPC experts should 
comment.

Djam
  

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