First look at BeamLine in Run 13 pp510
I processed a few thousand events from run 14072098 with the chain:
VtxSeedCalG,B2013,ITTF,ppOpt,dEdxY2,btof,emcDY2,ZDCvtx,NosvtIT,NossdIT,trgd,hitfilt,VFMinuit3,BEmcChkStat,Corr4,OSpaceZ2,OGridLeak3D
Here are a few plots of the data:
y vs. x shows y is more offset from 0 than x, so y will be more sensitive to pile-up:
![](/STAR/files/userfiles/17/image/Calibrations/BeamLine/Run13/pp510/Run13pp510_BeamLine1_y_x.png)
![](/STAR/files/userfiles/17/image/Calibrations/BeamLine/Run13/pp510/Run13pp510_BeamLine1_y_mult.png)
y vs. BEMC matches (capped at 7):
![](/STAR/files/userfiles/17/image/Calibrations/BeamLine/Run13/pp510/Run13pp510_BeamLine1_y_bemc.png)
![](/STAR/files/userfiles/17/image/Calibrations/BeamLine/Run13/pp510/Run13pp510_BeamLine1_y_mult_bemc.png)
y vs. EEMC matches (capped at 7):
![](/STAR/files/userfiles/17/image/Calibrations/BeamLine/Run13/pp510/Run13pp510_BeamLine1_y_eemc.png)
![](/STAR/files/userfiles/17/image/Calibrations/BeamLine/Run13/pp510/Run13pp510_BeamLine1_y_mult_eemc.png)
y vs. BTOF matches (capped at 7):
![](/STAR/files/userfiles/17/image/Calibrations/BeamLine/Run13/pp510/Run13pp510_BeamLine1_y_tof.png)
![](/STAR/files/userfiles/17/image/Calibrations/BeamLine/Run13/pp510/Run13pp510_BeamLine1_y_mult_tof.png)
y vs. matches across the TPC central membrane (capped at 3):
![](/STAR/files/userfiles/17/image/Calibrations/BeamLine/Run13/pp510/Run13pp510_BeamLine1_y_cm.png)
![](/STAR/files/userfiles/17/image/Calibrations/BeamLine/Run13/pp510/Run13pp510_BeamLine1_y_mult_cm.png)
And here is the very preliminary calibration, using a cut of "(mult>25&&(detmap&7)>0)||(mult>15&&(detmap&7)>3)", uploaded to the DB with a timestamp of 2013-03-01 00:00:00:
I also attempted to "see" the beampipe, but had no success in doing so.
-Gene
VtxSeedCalG,B2013,ITTF,ppOpt,dEdxY2,btof,emcDY2,ZDCvtx,NosvtIT,NossdIT,trgd,hitfilt,VFMinuit3,BEmcChkStat,Corr4,OSpaceZ2,OGridLeak3D
Here are a few plots of the data:
y vs. x shows y is more offset from 0 than x, so y will be more sensitive to pile-up:
![](/STAR/files/userfiles/17/image/Calibrations/BeamLine/Run13/pp510/Run13pp510_BeamLine1_y_x.png)
![](/STAR/files/userfiles/17/image/Calibrations/BeamLine/Run13/pp510/Run13pp510_BeamLine1_y_mult.png)
y vs. BEMC matches (capped at 7):
![](/STAR/files/userfiles/17/image/Calibrations/BeamLine/Run13/pp510/Run13pp510_BeamLine1_y_bemc.png)
![](/STAR/files/userfiles/17/image/Calibrations/BeamLine/Run13/pp510/Run13pp510_BeamLine1_y_mult_bemc.png)
y vs. EEMC matches (capped at 7):
![](/STAR/files/userfiles/17/image/Calibrations/BeamLine/Run13/pp510/Run13pp510_BeamLine1_y_eemc.png)
![](/STAR/files/userfiles/17/image/Calibrations/BeamLine/Run13/pp510/Run13pp510_BeamLine1_y_mult_eemc.png)
y vs. BTOF matches (capped at 7):
![](/STAR/files/userfiles/17/image/Calibrations/BeamLine/Run13/pp510/Run13pp510_BeamLine1_y_tof.png)
![](/STAR/files/userfiles/17/image/Calibrations/BeamLine/Run13/pp510/Run13pp510_BeamLine1_y_mult_tof.png)
y vs. matches across the TPC central membrane (capped at 3):
![](/STAR/files/userfiles/17/image/Calibrations/BeamLine/Run13/pp510/Run13pp510_BeamLine1_y_cm.png)
![](/STAR/files/userfiles/17/image/Calibrations/BeamLine/Run13/pp510/Run13pp510_BeamLine1_y_mult_cm.png)
And here is the very preliminary calibration, using a cut of "(mult>25&&(detmap&7)>0)||(mult>15&&(detmap&7)>3)", uploaded to the DB with a timestamp of 2013-03-01 00:00:00:
row.x0 = -0.01031345; // cm : x intercept of x vs z line ; row.dxdz = -0.0003603694; // : slope of x vs z line ; row.y0 = -0.5831217; // cm : y intercept of y vs z line ; row.dydz = 0.0006101717; // : slope of y vs z line ; row.err_x0 = 0.00300816; // cm : error on x0 ; row.err_dxdz = 8.228317e-05; // : error on dxdz ; row.err_y0 = 0.003242227; // cm : error on y0 ; row.err_dydz = 8.380458e-05; // : error on dydz ; row.chisq_dof = 39.22777; // chi square / dof of fit ; row.weight = 100; // weight of seed to use in vertex-finding ; row.stats = 3801; // number of events used in seed-finding ;
I also attempted to "see" the beampipe, but had no success in doing so.
-Gene
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