[Brahms-dev-l] tracking efficiency

Hi Hongyan,

  I've just put efficiency maps in to the official place
/brahms/data08/corrections/trackEff/MappedEffic_run03_dau_200_nkv1.root,
for gtrProd=3 and ltrProd=2. According to your suggestions I took all
runs which you'd given me for 4deg data.
However, for 8&12deg I calculated efficiencies ONLY for runs that 
contain full FS tracks (this conditions is required by the efficiency 
code).

1.For 4deg settings almost all runs don't have tracks
in detector T3, thus T3 and T2 efficiencies are 0 which is
correct and you shouldn't worry about that.

In 4B3450 setting 8219 & 8220 runs have only a few tracks in the
whole setup, don't they?

2. A similar situation is in the other 8 and 12 deg settings, but here it
happens that some runs don't look good e.g. for T1 detector (I rejected
runs: 8513 in 8A843; 8622-12A1692; 8560-12A843).

In 8B843 setting  run 8159 has only FFS tracks, so for the full FS track
analysis you should remove it.

3.In 12A843 I rejected run 8375.  This run is the only one that has T3 
tracks. I suggest you to remove this runs from your analysis or treat it 
separately. It is not only the issue of efficiency but also of the 
momentum resolution.

  If you have questions, please let me know.

Best regards,
nat


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