Re: [BLAST_ANAWARE] k factor in WC calibration

From: Chi Zhang (zhangchi@MIT.EDU)
Date: Thu Feb 05 2004 - 22:35:59 EST


Hi guys,

crunches are under way using calibration WITH k factor, took a look at the
events already processed in run 4213, 4217, 4222, 4226. about 450k
triggers available to analysis at this time, resolutions ARE improved:

p: <=40MeV
theta: <=0.8deg
phi: <=1deg
z: <=2.5cm
total energy: <= 60MeV

close to 700 series level, momentum recon on left and right still
asymmetric, with left momentum 50MeV below the calculated line, but right
side right on top of the calculation.

I have checked the Wire.Cal file with the k factors and updated codes in
BlastLib2 into CVS.

I agree with Chris that ultimate k factor calibration needs to be done hit
per hit. But that requires a lot of statistics.

Chi



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