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Luminosity systematics for Run 12 pp510 TPC hit errors

Updated on Wed, 2013-04-17 17:57. Originally created by genevb on 2013-04-17 17:45.
 I ran the TPC hit error calibration for 500 events from 3 runs, using the following chain in SL13b:
DbV20130415,pp2012b,ITTF,beamline,VFPPVnoCTB,geant,BEmcChkStat,btof,Corr4,OSpaceZ2,OGridLeak3D,-hitfilt

  Low Mid High
Run # 13096006 13108001 13108071
ZDCx [MHz] 0.172 0.252 0.355
BBCx [MHz] 1.94 2.89 4.09
TPC Hit Error Coefficients
(6 inner, 6 outer)		 
0.003341787
9.388876e-05
0.051278
0.00473453
0.002114308
0.02065579
0.0009628346
0.0008208762
0.05992494
0.003797901
0.0005902361
0.04837168

0.003884301
0.0001321844
0.05766822
0.004991736
0.001960115
0.02221587
0.0009935053
0.0008843312
0.05981651
0.004514012
0.0001670887
0.04776563

0.003819716
0.0002417769
0.05805366
0.005408129
0.002370836
0.02273012
0.001039648
0.0008773184
0.06265231
0.004088022
0.0005653975
0.04954803

Here are the three sets of TPC hit errors plotted (open the image in a new tab or window to see full size so that the axes are legible):

Low Mid High


And here are the ratios between them:

Low/Mid High/Mid

The low and high luminosity hit errors are well within ±10% (generally much less) of the mid luminosity errors.

-Gene
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