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Energy Deposit Correction Analysis by Y.C.Han at NKS2 Meeting Jan10, 2008

This analysis focuses on correcting energy deposits to improve kinematics accuracy, with specific corrections for proton and pion energy losses in the IH. Includes event selection with varied cut conditions and correction methods.

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Energy Deposit Correction Analysis by Y.C.Han at NKS2 Meeting Jan10, 2008

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  1. γ+ d → p + p + π-Analysis Y.C.Han@NKS2 Meeting Jan10, 2008

  2. Contents • Energy deposit Correction • Select/Cut Conditions

  3. Energy Deposit Correction • Motivation: get more accurate kinematics • p/pi energy loss in IH bg 0.25~1.6 for proton, 0.5~6 for pion

  4. Energy deposit correction Event Select with loose cut Particle E/p from DC Energy deposit Correction Event Select with tight cut Analysis W/ Correction Energy Deposit Correction Method

  5. Event Select

  6. Event Select

  7. Event Select

  8. Event Select

  9. Appendix-3 Event Select Condition • Time: |IH-TagF| <2.5nsec; • 2TrVertex: Track Distance<1.5 cm; • 3TrVertex: Triangle length<3.0 cm; • 3TrVerPos: -3<X<2, -1.64<Y<1.44, -1<Z<1 (cm); • Mass: 0.8<ppiMM <1.17, 1.66<LVTarM<2.1 (GeV/c2); • LVTarMom: 119.6<Px<80.4, -103.7<Py<96.3, -50<Px<50 (MeV/c);

  10. Appendix-2 Fig. Effect of Energy Deposit

  11. Appendix-3 Simulation Set GENETYPE: 3BPS ppp - /4BPS ppp -p 0 Gamma E:0.8~1.1 GeV (uniform); Beam Size: YZ-Plane Gaussian distribution w/ σ=0.5 cm; Target: LD2 w/ -3.61<X<0.39 cm Event #:1e6; SDCRES: 150μm ; CDCRES: 200μm ; HDTRES: 0.2 cm; OHZRES: 2.0 cm; DCEFF: 99%; DCEFFREG: 1.2;

  12. Appendix-4 TABLE I. Materials of NKS2 on the Particles’ Trajectory (inside CDC)

  13. That’s All.

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