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HLAB meeting

E05-115 experimental setup in JLab Hall C (2009). HLAB meeting. 25 Jan 2011 T.Gogami. Contents. Whole analysis status Tracking status Multiplicity Rate Tracking analysis outlook Event display. Whole status about analysis. e. e. u. u. γ *. K +. e + p --> e + K + + Λ. –.

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HLAB meeting

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  1. E05-115 experimental setup in JLab Hall C (2009) HLABmeeting 25 Jan 2011 T.Gogami

  2. Contents • Whole analysis status • Tracking status • Multiplicity • Rate • Tracking analysis outlook • Event display

  3. Whole status about analysis e e u u γ* K+ e + p --> e + K+ + Λ – • Kawama • Matrix • Gogami • Tracking • e,e+ background • Doi • Tracking • Elementary • Chiba • Cherenkov counters • Nagao • decay pion experiment • Hirose • New TOF wall for KaOS u s p d s u Λ d E05-115 experiment setup in JLab Hall C (2009)

  4. Tracking status

  5. Drift chambers in HKS KDC wire configuration v’ 150° K+ v x’ 90° x u’ z 30° y u x y x

  6. Multiplicity KDC wire configuration Multiplicity is higher for heavy target v’ CH2 , 2.0 [μA] K+ v 52Cr , 7.6 [μA] x’ x u’ z y u Multiplicity distribution x y x

  7. Number of tracks KDC1 Tracking efficiency is lower. Tracking eff. = 80% (Multiplicity = 5 ) TOP view TOP view Black : hit wires Blue : selected wires Red : track Black : hit wires Blue : selected wires Red : track CH2 52Cr

  8. Multiplicity for each layer

  9. Singles rate summary target, Run #, current Water 75930 2.8 Carbon 75954 35 Cr 76000 8.0 Carbon 76051 10 Carbon 76080 40 Boron 76150 40 Boron 76180 45 Lithium 76235 35 CH2 76320 2.0 Be9 76590 40 Cr 76700 7.5 Carbon 76830 20

  10. Rate dependence • Multiplicity : linear dependence with rate • Residual : quadratic dependence with rate

  11. e , e+ background in GEANT simulation KDC1 KDC2 e- , e+ • Generated particle : e+ • Distribution : spherical uniform • Momentum : 860 – 1000 [MeV/c] • Angle : 0 – 2 [mrad] • 1000 events Vacuum chamber (sus304) NMR port (sus304)

  12. Trying to reduce these multiplicity for tracking • Optimization of e-,e+ background suppression • ADC , TDC distribution • HES hodoscopes information • Pre-cut with TOF counters • Optimization of cut parameters

  13. Event display

  14. Previous display Hit events in KDC which can make tracks could be seen. KTOF1X KDC2 Track KDC1

  15. HKS tracking • 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

  16. HKS event display HKSdisp KDC_2d HKSdetectors KDC1 KDC KDC2 data dat file ENGINE

  17. Select data start ・・・・ ・・・・ data start ・・・・ ・・・・ data start ・・・・ ・・・・ data ・・・・ EMACS start ・・・・ ・・・・ data start ・・・ ・・・ start ・・・・ ・・・・ data ・・・ Select

  18. selectdata.sh data/selectdata.sh data/selectdata.el Load selectdata.el functions Emacs lisp

  19. lisp? 知りません • Emacsなら知らなくてもOK 今からやる事を覚えてください C-x ( 何かする 覚えてほしいのはここまでです C-x ) 今覚えたキーボードマクロに名前を付けたいです M-x name-last-kbd-macro そのマクロをLispコードとしてバッファに挿入してください M-x insert-kbd-macro 自動でlisp で書いてくれる ! 便利 .emacsに記録すればいつでも使える

  20. HKS event display HKSdisp KDC_2d HKSdetectors KDC1 KDC KDC2 data dat file dat file • EMACS • makedata.sh ENGINE

  21. KDC1 • KDC1 • KDC1.cc • KDC1.in • Parameters • README.txt • Makefile • pict/ Black : hit wires Blue : Selected wires Res : Tracks KDC1 (RUN 77124) KDC2 is similar to KDC1

  22. KDC • KDC • KDC.cc • KDC.in • parameters • README.txt • Makefile • pict/

  23. KDC_2d • KDC_2d • KDC_2d.cc • KDC_2d.hh • KDC_2d.in • parameters • README.txt • Makefile • pict/

  24. HKSdetectors • HKSdetectors • HKSdet.cc • HKSdet.in • parameters • README.txt • Makefile • pict/

  25. Easy to get the code makeKdisp.sh • /home/gogami/ • makeKdisp.sh >>./makeKdisp.sh README.txt

  26. Select data start ・・・・ ・・・・ data start ・・・・ ・・・・ data start ・・・・ ・・・・ data ・・・・ EMACS start ・・・・ ・・・・ data start ・・・ ・・・ start ・・・・ ・・・・ data ・・・ Select

  27. 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 • ・・・

  28. CH2 KDC2 KDC1

  29. 52Cr KDC2 KDC1

  30. Summary • Whole analysis status • Doing our best ! • Tracking status • Mean multiplicity is up to ~6.5 on the HKS chambers • Rate is up to ~30 [MHz] on the HKS chambers • Need optimal cut of e-,e+ background • Event display • Can see rough states of the tracking visually • HES HKS collaboration meeting , JLab • 2011/Feb/24 ~ 2011/Feb/25 • KaOS meeting , Mainz • 2011/Mar/17 • JPS , Nigata • 2011/Mar/25 ~ 2011/Mar/28 予定

  31. END

  32. Residual for each target 52Cr ,77124 σ≈372 [μm] 12C ,76077 σ≈218 [μm] 10B ,76184 σ≈161 [μm] 9Be ,76607 σ≈214 [μm] 7Li ,76220 σ≈181 [μm] H2O ,75972 σ≈337 [μm] CH2 ,76314 σ≈155 [μm]

  33. Things to do for the collaboration meeting and JPS • Quality of Tracking for each target (especially for CH2 and H2O) • Efficiency • Real data • With MC simulation • Spending time for each section in the code • Optimization of e-,e+ background suppression • ADC , TDC distribution • HES hodoscopes information • Pre-cut with TOF counters • Optimization of cut parameters • Multi-track events • Matrix • Kawama-san’s code • Simple code

  34. 覚書 • 出張準備 • 保険 • ESTA ($14) • 申請からOKが出るまで数分 • パスポート • 忘れないように • 集中講義 • ¾終了 • レポート(提出済) • 今週1/26(水) – 1/28(金) • 講師:佐々木修 , “素粒子・原子核の実験のための電子回路” • TA • アメリカ出発までに! • ミニテスト集計 • 中間テスト採点 • レポート採点

  35. Tracking in HKS(pattern recognition) y y • Make combination of hit wire belong to one space point for tracking • pre tracking x x Test point Space point

  36. Pre track andSee corresponding TOF counters • pre track with space points • single hit in KTOF • multi hit in KTOF • start time calculation for drift time of chambers • correction (card) Not enough

  37. Simulation for HKS tracking efficiency (by D.Doi) KTOF1X • input tracks in simulation ==> output file (hit wire info and so on) • input this file to real analyzer • see output tracks and compare to input tracks K+ KDC2 KDC1 one result of this simulation CH2 target Current analyzer cannot handle with high multiplicity data 52Cr target Need to improve tracking code Now developing

  38. e,e+ b.g. in HKS TOP view 5 × 5 [cm2] Side view HKS - D HKS - Q X’ [rad] X [cm]

  39. HKS detectors June 2009 in JLab Hall-C 1 [m] • HKS trigger • CP = 1X ×1Y × 2X • K = WC ×AC •  CP × K − π+ K+ p ~18 [kHz] (8 [μA] on 52Cr) K+ p, π+ Drift chambers -KDC1,KDC2- • Cherenkov detectors -AC,WC- • Aerogel (n=1.05) • Water (n=1.33) TOF walls -2X,1Y,1X- (Plastic scintillators) σ ≈ 250 [μm] TOF σ ≈ 170 [ps] Strangeness 2010 at KEK

  40. HES Detectors HES D magnet Drift chambers - EDC1 , EDC2 - TOF walls - EH1 , EH2 - (Plastic scintillators) σ ~ 300 [ps] Time Of Flight HES trigger EH1 ×EH2 ~2 [MHz] (8 [μA] on 52Cr) e Strangeness 2010 at KEK

  41. E05-115 ( 2009 Aug – Nov ) Data summary Physics Data Λ Λ Λ Λ (@36μA) Λ Calibration Data 22nd Indian-summer school (SNP2010)

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