Some more comments on this - which I find even more confusing. I ran my own version of tracking, which supposely is identical to that used in the production version - (and my own brat) - with samer offset files as used in the most recent production. This gave not the same results as the june 22 production (version 6). The global fits found 158 tracks compared to 132 (but less than the ). At the same time the experimental global tracking found 114 full tracks (t1,2,3,4,5) 96 t(1,2,4,5) tracks using the same offsets and cuts -- somethins is a miss /fv ---------------------------------------------------------------- Flemming Videbaek Physics Department Brookhaven National Laboratory e-mail: videbaek@bnl.gov phone: 631-344-4106 ----- Original Message ----- From: flemming videbaek To: devlist Sent: Friday, July 01, 2005 12:54 PM Subject: global tracking During the ewednesday meeting there was a discussion on the a behaviour observed by Catalin see http://www.nbi.dk/~ristea/QM05/ See the t4t5/ffs etc.. Pawel pointed out that (a little while back too) that the DC enhancement was not always on. the two jumps at 10300 and 10484 does not seem to be correlated with - anything noted in elog (basically change of down scales during a store. - calibrations for any sub system. - looking at overall rates of tracks i.e. global tracks/trigger 2 there is a slight change with runs 299,300,301 -> 0.293,0.317,0.33, - this could be related reducing backgrounds. The H2 rates drops quickly throughout these runs. Thus no solutions By coincident I looked at run 10384/10385. This was interesting since it has 3 sets of gtr's stting around. Apart from this it was also rerun recently on June 22 (coincidently not using the submitGtr.perl script ) with DC enhancement on. the truely remarkel fact is that the number of good tracks getting out of the globals tracking drops as more reconstruction is doen version T4T5 T3T4 FFS T24 GlobalTracks 6 320 340 2354 528 132 5 328 319 2359 527 167 4 328 319 2359 527 188 How can this be the case !! I find this exceedingly worrisome. Since the numbers of overall track in individual combinations seems ok, how come that tracks are lost with time (of course they may not have been good tracks, but it should be looked at. flemming ---------------------------------------------------------------- Flemming Videbaek Physics Department Brookhaven National Laboratory e-mail: videbaek@bnl.gov phone: 631-344-4106 _______________________________________________ Brahms-dev-l mailing list Brahms-dev-l@lists.bnl.gov http://lists.bnl.gov/mailman/listinfo/brahms-dev-lReceived on Fri Jul 1 18:33:26 2005
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