HES-HKS & KaoS meeting 15/July/2011 T.Gogami Wiesbaden のお風呂はこんな感じでし た

Content E – KDC x-t parameter correction (H 2 O, 52 Cr)

E EHODO cabling ( 30/July/2009 ) Cherenkov.N.Taniya S.N.Nakamura

Residuals & x-t correlation X-t function is worse ? CH 2 target 52 Cr target

abs(WC –TC) vs. Drift time |Wire center – Track coordinate| s 0 Wire center Track coordinate Black : |WC-TC| Magenta : Profile of |WC-TC| Green : x-t calc. CH 2 target 52 Cr target Drift distance

abs(WC –TC) vs. Drift time ( with Tracking chi-square cut ) 1.trkchi2 < trkchi2 < 50 3.trkchi2 < 10

“Drift time” to “Drift distance” (HKS) PARAM / hdriftmap.param.0 number of array +50

h_drift_dist_calc.f ilo ihi gradient fractional part Interpolate drift time

KDC x-t function correction (Tohoku PC in Mainz) – /home/gogami/E05-115/root/hksSingle/xt_calib/ Makefile xtCalib.cc input/param.in outdat/*.dat ParametersFunctionFittingProfiling 5 th order polynomial

Drift Time & Drift Distance 52 Cr target (77120 – 77124) Before After

Drift Time & Drift Distance ( DD>0.0 && DD<0.5 ) 52 Cr target (77120 – 77124) Before After

Drift Time & Drift Distance & residual Run 52 Cr Cut 0.0 [cm] < Drift distance < 0.5 [cm] Before After

Tracking residuals (KDC1-x) Number of event up! Residual better! Before After H 2 O target 52 Cr target

Tracking chi-square Tracking quality up! H 2 O target 52 Cr target [1]. Total (after,before) = (94444,93226) 1.3% up [2]. Num( <10 ) (after,before) = (47151,43463) 8.5% up [1]. Total (after,before) = (45870,44864) 2.2% up [2]. Num( <10 ) (after,before) = (15279,13417) 13.9% up

Ratio of the number of event with same chi-square cut Rough K + selection – haernpe1+haernpe2+haernpe3<5.0 – hmsq<0.60 – hwatnkn1+hwatnkn2>1.0 H 2 O target 52 Cr target [%]

KaoS experiment Aerogel Cherenkov Detector (13/July/2011)

Preparation for beam time Target ( 7 Li, 9 Be) [Anselm] Aerogel [Luka, Tohoku] TOF [Florian] Cutting Aerogel Cosmic-ray Test New spacer

Summary and To do Summary – E x-t function correction for 52 Cr & H 2 O target (No iteration)  Got better To Do – E x-t function correction iteration for 52 Cr & H 2 O target Tracking (HES, HKS) – DC info selection with TOF, AC (WC) Efficiency – EHODO – Low momentum side of HKS – E Y-offset of RP pattern with SS hole cut – Decay pion experiment 7/19- – APFP2011 APFP2011 Conference Fee (Early :300USD, On-site:400USD) - 7/20 – Stay permission in Germany Interview on 7/26 10:00-

End Wiesbaden, Germany (9/July/2011) 公園で温泉が湧いてた ハーゲンダッツ

Number Comparison (no cut) H 2 O target 52 Cr target

Number Comparison (Kaon Select) H 2 O target 52 Cr target