Dear Flemming, > > On the mom matching - I found that d3-d4 did look good for the lower > fields, is this also true for the highest field > settings? I was not so happy with that - but this was before your > final tunes. I looked at the momentum correlation for two runs 11702 (1/2B) and 11702 (1/1B). The plots are available on my local sever: http://zefir.if.uj.edu.pl/staszel/brahms/momcorr/index.html. As I wrote, I see a nice matching between D3 and D4 momenta, however D2 momenta are about 2% (on average) larger D3(D4) momenta. Comparing D3 versus D4 for T3 and T2 used as a front tracker, one can conclude that the momentum uncertainty due to the tracking in T2 is +-0.5%, and it is strongly correlated with momentum (x position in the detector). I guess that different offsets for 1/2 and 1/1 field for D2-D3(D4) correlation suggest than the un-matching in momentum is NOT only due to the tracking (will check 1/4 field to confirm it). Best Regards Pawel. _______________________________________________ Brahms-dev-l mailing list Brahms-dev-l@lists.bnl.gov http://lists.bnl.gov/mailman/listinfo/brahms-dev-lReceived on Mon Jun 21 15:27:29 2004
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