1. HES-HKS & KaoS meeting Toshi Gogami 11/July/2012

2. Contents TOSCA calculation of SPL with field clamp + ENGE model XT function calibration

3. SPL with field clamp + ENGE New magnetic field map  Committed to the svn

4. SPL with field clamp + ENGE Subtraction Ratio Line Y=0 (X,Z) : (-40,15)  (40,65)

5. SPL + ENGE Geant4 simulation (ENGE01) SPL ENGE 1.851GeV

6. Want Λ,Σ 0 tuning power H 2 O ⇔ CH 2 (75921 – 75923)

7. xt parameters for H 2 O target Parameter data base 75886-75918 e05115.param.75886-->1 75919-75920 e05115.param.75919-->2 75921-75923 e05115.param.75921-->3 75924-75931 e05115.param.75921 75932-75946 e05115.param.75932-->4 75947-75947 e05115.param.75947-->5 75948-75950 e05115.param.75932 75951-75967 e05115.param.75951-->6 75968-75969 e05115.param.75968-->7 75970-75973 e05115.param.75932 75974-75976 e05115.param.75921 HKS drift distance map 1 : hdriftmap.param.75902 2 : hdriftmap.param.75885 (no use for H2O target) 3 : hdriftmap.param.75928 4 : hdriftmap.param.75928 5 : hdriftmap.param.75928 6 : hdriftmap.param.75952 (no use for H2O target) 7 : hdriftmap.param.75968 (no use for H2O target) ==> It means that parameters No.1 and No.3(=No.4=No.5) need to be optimized for H 2 O target runs. hdriftmap.param.75902 : 75886-75918 hdriftmap.param.75928 : Others

8. XT functions 9 th polynomial

9. Tracking residuals of each layers

10. Drift distance 1 + 2  0.5 cm H 2 O, 52 Cr Peak mean 0.48 cm

11. To do JLab E05-115 – Parameter optimization (xt functions) for H 2 O, 52 Cr target – Matrices tuning Weight study (angle, momentum) Cut conditions (concerning S/N)  Histograms Biding energy Cross section (Λ,Σ 0 from CH 2 and H 2 O target)

12. END 9/July/2012

13. x-t function calibration |Wire center – Track coordinate| s 0 Wire center Track coordinate Black : |WC-TC| Magenta : Profile of |WC-TC| Green : x-t calc. Track Drift distance Fitting Function HES/HKS collaboration meeting, T.Gogami9-11/May/201213

14. x-t calibration for 52 Cr Target Residuals better – KDC1 ; 400 [μm]  300 [μm] Number up – ~10% increased at χ 2 <20 – (~5% increased without χ 2 cut) χ 2 cut condition HES/HKS collaboration meeting, T.Gogami9-11/May/201214