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Re: One question about tracking efficiency [message #10580 is a reply to message #10579] Thu, 22 April 2010 19:40 Go to previous message
Yutie Liang is currently offline  Yutie Liang
Messages: 12
Registered: April 2010
Location: Germany
occasional visitor
 From: *physik.uni-giessen.de
1. I checked MCTracks, and about 30% events passed the cut for all the 6 particles with theta > 10* and p > 0.2GeV.
If simply take this into account, the total efficiency will be 6% / 30% = 20%.
I will try to only simulate those events which could pass the theta and momentum cut.

2.
In fact, I didn't update PndEvtGenGenerator in the way you think of.
I don't know how to update. So I just modify the file
PndEvtGenGenerator comparing with your modification. (cm->mm)

If I don't use Pid, there will be too many combinations. Especially there are more than 6 reconstructed tracks for most of events. I can barely see the psi3770 peak.
index.php?t=getfile&id=5944&private=0
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