2013 pp510 MC samples

fz-file generation: ~/xml/fzout.xml

1. min. bias. pile-up : CPU/event = 16.0403(sec) for 996000 events
   /star/subsys/tpc/fisyak/simu/2013/pp510B/
   bfc.C(1000,"y2013_1x,beamline,sdt20130317.070000,verybig,useXgeom,geant,noRunco,noHistos,PythiaPP510,fzout,rung.999,nodefault","","","pythia_0999.root")
2. trigger W->e mu : CPU/event = 53.1976(sec) for 38560 events
   /star/subsys/tpc/fisyak/simu/2013/pp510B/
   bfc.C(10,"y2013_1x,beamline,sdt20130317.070000,verybig,useXgeom,geant,noRunco,noHistos,PythiaPP510Wenu,fzout,rung.2999,nodefault","","","pythiapp510wenu_2999.root")

Pile up: ~/xml/pileup.xml, 10 MHz.

1. trigger+pile-up
   /star/subsys/tpc/fisyak/simu/2013/pp510+pileupB/
   merge:
   gback 414 414 1.066 106.6 10 * 10 MHz
   mode TPCE BACK 4141414 ** TPC sees 414 bxings before and 414 bxings after the trigger collision.

TpcRS + TpcClu: ~/xml/2013_TpcRSClu.xml, fixed Field

Reconstruction: ~/xml/MC2013.xml

Comparison

1. 10 MHz pile-up reconstructed with Sti+PPV.
   Location : /gpfs01/star/pwg_tasks/tfg/reco/2013/emc.SL15PPV
   CPU/event = 261.678(sec) for 6684 events
   bfc.C(9999,"in,VFPPVnoCTB,useBTOF4Vtx,Sti,Corr4,OSpaceZ2,OGridLeak3D,pp2013a,emcY2,mtd,btof,fgt,fgtPoint,BEmcChkStat,beamline,-evout,-geantout,NoHistos,noTags,noRunco,-MiniMcEvent,-MiniMcMk,Tree,ReadAll","/star/subsys/tpc/fisyak/reco/2013/MC.DEV2.ExB/pythiapp510wenu_2999_pileup_1_10.event.root","pythiapp510wenu_2999_pileup_1_10.event.root","pythiapp510wenu_2999_pileup_1_10.root")
2. 10 MHz pile-up reconstructed with StiCA+PPV.
   Location : /gpfs01/star/pwg_tasks/tfg/reco/2013/emc.SL15StiCAPPV
   CPU/event = 275.484(sec) for 6684 events
   bfc.C(9999,"in,VFPPVnoCTB,useBTOF4Vtx,StiCA,Corr4,OSpaceZ2,OGridLeak3D,pp2013a,emcY2,mtd,btof,fgt,fgtPoint,BEmcChkStat,beamline,-evout,-geantout,NoHistos,noTags,noRunco,-MiniMcEvent,-MiniMcMk,Tree,ReadAll","/star/subsys/tpc/fisyak/reco/2013/MC.DEV2.ExB/pythiapp510wenu_2999_pileup_1_10.event.root","pythiapp510wenu_2999_pileup_1_10.event.root","pythiapp510wenu_2999_pileup_1_10.root")
3. 10 MHz pile-up reconstructed with StiCA+KFV,
   Location : /gpfs01/star/pwg_tasks/tfg/reco/2013/emc.SL15StiCAKFV
   CPU/event = 356.632(sec) for 6545 events
   bfc.C(9999,"in,KFVertex,StiCA,Corr4,OSpaceZ2,OGridLeak3D,pp2013a,emcY2,mtd,btof,fgt,fgtPoint,BEmcChkStat,beamline,-evout,-geantout,NoHistos,noTags,noRunco,-MiniMcEvent,-MiniMcMk,Tree,ReadAll","/star/subsys/tpc/fisyak/reco/2013/MC.DEV2.ExB/pythiapp510wenu_2219_pileup_1_10.event.root","pythiapp510wenu_2219_pileup_1_10.event.root","pythiapp510wenu_2219_pileup_1_10.root")
4. No pile-up reconstructed with StiCA+KFV. Location : /gpfs01/star/pwg_tasks/tfg/reco/2013/W.ExB.DEV2StiCAKFV
   CPU/event = 47.9246(sec) for 35565 events
   bfc.C(9999,"fzin,-in,y2013_1x,sdt20130317.070000,tpcRS,TpxClu,McEvent,bbcSim,btofsim,mtdSim,EEfs,,KFVertex,StiCA,Corr4,OSpaceZ2,OGridLeak3D,pp2013a,mtd,btof,fgt,fgtPoint,BEmcChkStat,beamline,-evout,-geantout,NoHistos,noTags,noRunco,-MiniMcEvent,-MiniMcMk,Tree,ReadAll","/star/subsys/tpc/fisyak/simu/2013/pp510WB/pythiapp510wenu_2999.fz","pythiapp510wenu_2999.event.root","pythiapp510wenu_2999.root")

• Global tracks
  1. Fig. 1, Fig. 7-10 : χ²/NDF for track with pile-up ≈ 2, without pile-up ≈ 1;
  2. Fig. 5, Fig. 10-12. χ²_Vertex ≈ 10 for both PPV and KFV (It should be around 2). A strange p_T dependence for PPV.
  3. Fig. 21. A slighter worse Dca_XY for StiCA than Sti: ≈ 0.5 cm versus 0.4 cm, respectively. (It might be due to higher StiCA efficiency for low p_T tracks.)
  4. Fig. 55, 67. Dca_XY pull with pile-up increased to 3.
• Primary tracks
  1. Fig.121: η pulls with pile-up increase to 2
  2. Fig.129: very strange pulls for η for PPV.
• Reconstruction efficiencies
  1. Fig.151-153: Global tracks Sti efficiency ≈ 50%, StiCA efficiency ≈ 60%.
  2. Fig.155-156: Primary track Sti efficiency ≈ 50%, StiCA ≈ 60%.
  3. Fig.175-177: Lost global tracks : Sti ≈ 45%, StiCA ≈ 30%
  4. Fig.178-180: Lost primary tracks : Sti ≈ 45%, StiCA ≈ 30%
• No anomalies observed by Hongwei (slide 7) for global p_T have been seen in this MC analysis.

Conclusions

• Adding pile-up with 10 MHz rate increase track χ²/NDF by a factor of 2.
• Adding pile-up reduces track reconstruction efficiency from 95% to 50% for Sti and to 60% for StiCA.
• The efficiency is compatible with results obtained from Track by Track comparison,

Reconstruction: ~/xml/MC2013.xml, emc.SL15