Hi, I've looked a bit into this. Insted of plotting the origin of TPM2 tracks I plotted the origin - x*sin(theta) to try to point back to TRMRS. If I put x=15 I get a well defined gap in the distribution. I'm not sure I understand the 15 cm, I guess the distance from the middle of TPM2 to TRMRS is much larger. Any ideas? Claus > Hello. (While some people are enjoying BRAHMS fame in sunny > California,) I was looking at TrMrs detector. I noticed that the > matched track x position in TPM2 has holes (not flat). I traced back to > that it is simply coming from the local tracking and not from matching. > See the figure below (it is from local tracking (from histogram created > during creation of ltr files)). > > > > This odd distribution is not seen in TPM1 track x distribution. (see below.) > > > > We must understant this before taking anymore data. Is it some wrong > calibration from TPM2 or are some slats in TrMrs inefficient? If the > later is the case, why is it not seen in the TPM1 distribution? Help > from experts is greatly necessary!!! (unless this is normal.) I will > check the TrMrs Hit distribution next. > _______________________________________________ Brahms-dev-l mailing list Brahms-dev-l@lists.bnl.gov http://lists.bnl.gov/mailman/listinfo/brahms-dev-l
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