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HES-HKS & KaoS meeting

HES-HKS & KaoS meeting. 21/Oct/2011 Toshi Gogami. 11/Mar/2010, E05-115 End- R un P arty at Kappo Nara, Newport News, US. Contents. KDC x-t function correction (H 2 O) Momentum dependence of HKS tracking eff. About discarded events. x-t func . calibration (H 2 O, HKS side).

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HES-HKS & KaoS meeting

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  1. HES-HKS & KaoS meeting 21/Oct/2011 Toshi Gogami 11/Mar/2010, E05-115 End-Run Party at Kappo Nara, Newport News, US

  2. Contents • KDC x-t function correction (H2O) • Momentum dependence of HKS tracking eff. • About discarded events

  3. x-t func. calibration (H2O, HKS side) E05115repaly/ • PARAM/ • hdriftmap.param.* • DBASE/ • E05115.datbase, e05115.param.*

  4. x-t func. calibration (H2O, HKS side) RUN Param 1 Param 2 • Number of runs = 157 (H2O) • hdriftmap.param. • 75511 (125 runs, 75523-75909) • 75885 (3 runs, 75921-75923) • 75928 (29 runs, 75921-7597) Need to check that these parameters are not used for other targets

  5. Rates of the KDC wires 52Cr, 77124 KDC1-u KDC1-u’ KDC1-x KDC1-x’ KDC1-v KDC1-v’ 52Cr, 76314 < 510 kHz < 350 kHz Rate [kHz] 77124 ( 52Cr target ) KDC2 KDC1 Wire Number 5 × 5 ~11 MHz ~22 MHz KDC2-u’ KDC2-x KDC2-x’ KDC2-v KDC2-v’ KDC2-u < 290 kHz < 230 kHz

  6. Momentum dependence of the HKS tracking efficiency CH2, 76314 (200,000 events) HKS single analysis • Kaon • hwatnkn1+hwatnkn2>1.0 • haernpe1+haernpe2+haernpe3<5.0 • 0.0<hmsq && hmsq<0.5 • Pion and positron • hwatnkn1+hwatnkn2>1.0 • haernpe1+haernpe2+haernpe3>10.0 • -0.5<hmsq && hmsq<0.5 • Proton • hwatnkn1+hwatnkn2<1.0 & hwatnkn1+hwatnkn2>0.0 • haernpe1+haernpe2+haernpe3<5.0 • 0.6<hmsq && hmsq<1.2 Momentum distribution of HKS (HKS single)

  7. Momentum dependence of the HKS tracking efficiency • Trackingeff[%] • 98.49 • 97.46 • 98.69 • 98.82 CH2, 76314 (200,000 events) Note : 52Cr, 77124 (5/6 × 5/6) • No big difference in my code. • Bug • Tracking code itself Region1 Region2 Region3 Region4

  8. HKS Event disp. Black : hit wires Blue : Selected wires Res : Tracks KDC1 (RUN 77124)

  9. Data pickup for HKS event display • Trans_scin • Trans_dc • Track • Select_good_track • Link_tracks • H_physics start • Total hit in KDC • Hit layer and wire • Multiplicity for each layer • Etc. • Number of tracks • x,xp,y,yp at reference plane • Selected wires • Layer • residual , chi2 • Momentum • KTOF,AC,WC data ntuple

  10. Select data start ・・・・ ・・・・ data start ・・・・ ・・・・ data start ・・・・ ・・・・ data ・・・・ EMACS start ・・・・ ・・・・ data start ・・・ ・・・ start ・・・・ ・・・・ data ・・・ Select For detail http://lambda.phys.tohoku.ac.jp/~gogami/ppt/HLab-meeting(2011_1_25).pdf

  11. Select data start ・・・・ ・・・・ data start ・・・・ ・・・・ data start ・・・・ ・・・・ data ・・・・ EMACS start ・・・・ ・・・・ data start ・・・ ・・・ start ・・・・ ・・・・ data ・・・ ***_trash.dat • CH2(76314) • Track : 26.8% • 52Cr(77124) • Track :3.6% Select • Hit on the two chambers • Required number of hit wires • Tracking χ2 • ・・・

  12. Events which are discarded CH2, 76314 KDC2 KDC1

  13. Events which are discarded KDC2 KDC1 52Cr, 77124

  14. Events which are discarded KDC2 • Where and why are these events discard ? • Are these events threw away with correct cut condition? KDC1 52Cr, 77124

  15. Summary and To do • Summary • KDC x-t function correction (H2O) • Check parameter file which need to be corrected. • Momentum dependence of HKS tracking eff. • Could see no difference between low and high mom. • Check bugs of my code • Is this just caused by tracking code itself (5/6 x 5/6) ? • About discarded events • Need to be checked that • Where and why these events are threw away • Cut condition is correct • To do • E01-011 • Enge GEANT • E05-115 • Momentum dependence of the HKS tracking efficiency • HKS b.g. rate study by GEANT simulation • Miss identification efficiency estimation by Doi code

  16. END 12/Oct/2011, 駐車場より

  17. x distribution of HKS RP CH2, 76314 (200,000 events) HKS single analysis • Kaon • hwatnkn1+hwatnkn2>1.0 • haernpe1+haernpe2+haernpe3<5.0 • 0.0<hmsq && hmsq<0.5 • Pion and positron • hwatnkn1+hwatnkn2>1.0 • haernpe1+haernpe2+haernpe3>10.0 • -0.5<hmsq && hmsq<0.5 • Proton • hwatnkn1+hwatnkn2<1.0 & hwatnkn1+hwatnkn2>0.0 • haernpe1+haernpe2+haernpe3<5.0 • 0.6<hmsq && hmsq<1.2 x distribution of HKS Reference Plane (HKS single)

  18. X distribution at HKS RP CH2, 76314 (200,000 events)

  19. Abs(WC – TC) Fitting Function Black : |WC-TC| Magenta : Profile of |WC-TC| Green : x-t calc. Track Track coordinate Wire center 0 s Drift distance |Wire center – Track coordinate|

  20. x-t calibration for 52Cr Target • Residual better • KDC1 ; 400 [μm]  300 [μm] • Number up • 10% increased at χ2 <20

  21. x-t calibration for H2O Target • Residual better • Number up • 10% increased at χ2 <20

  22. Tracking residuals of 12C target High Current (Run:75967) There are room to be improved maybe. Low Current (Run:76051)

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