Make New Entry, Make Followup Entry
User name Miha & Doug
Log entry time 01:25:34 on May17,2009
Entry number 274012
keyword=Summary of Tracking ChangesDuring the swing shift, Miha and I worked on fixing the problems with the BB.tr.n contructions. In particular, the following values were set. For the same run #2328, the number of zero tracks went from 850 to 313 out of 2300 events with good y-target and high ADC's in BB. The tracks that were found were indeed good and thus always there, just not being found. Miha's tracking code proved very useful in debugging. I am sure that once the chambers are better alined in software these cuts can be tighten as well as more tracks will be found.
(see run e05102_L_2328.old_051609.root for the old results)
[new variables & values]
BB.mwdc.chi2_conflevel = 1e-5
BB.mwdc.3d_chi2_conflevel = 1e-9
BB.mwdc.timeoffset = 16
[here is the full list of parameters]
BB.mwdc.wire.spacing = 0.01
BB.mwdc.xp.res = 5e-04
BB.mwdc.drift.min = -50
BB.mwdc.drift.max = 200
BB.mwdc.timecut = 1
BB.mwdc.pairsonly = 0
#BB.mwdc.ttd.converter = LinearTTD
BB.mwdc.ttd.converter = TanhFitTTD
BB.mwdc.ttd.param = 5.02e4 5e-3 1.95e11 6.1e-9
BB.mwdc.nopartner = 1
BB.mwdc.maxhits = 75
BB.mwdc.maxpat = 1500
BB.mwdc.3d_matchcut = 2e-3
#BB.mwdc.chi2_conflevel = 1e-4
BB.mwdc.chi2_conflevel = 1e-5
BB.mwdc.3d_chi2_conflevel = 1e-9
BB.mwdc.timeoffset = 16
BB.mwdc.maxmiss = 1
BB.mwdc.req1of2 = 1
FIGURE 1
