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HES HKS meeting

This document presents the results of simulations conducted using GEANT4 for high-energy events in the HES and HKS experiments. Key parameters include solid angle measurements around 7 and 11 msr, momentum values ranging from 0.5 to 1.2 GeV/c, and varying angular distributions. Despite high statistical yields, the triggered events still show minor fluctuations, indicating the need for further refinements in the simulation model. Detailed comparisons of parameters such as θ and φ in conditions with and without collimators are provided.

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HES HKS meeting

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  1. HES HKS meeting 4/22/2010 T.Gogami

  2. Generated a lot of event for HES 15 M Solid Angle ~7 [msr] 0.5 M simulation condition • event : 0.5 M / 15 M • p = 0.844±0.3 [GeV/c] • θ = 0.125±0.125 [rad] • φ =1.5708±1.5708 [rad] • No target • Nocollimator

  3. Generated a lot of event for HKS 43 M 1.3 M simulation condition • event : 1.3 M / 43 M • p = 1.2±0.3 [GeV/c] • θ = 0.124±0.124 [rad] • φ =1.57±1.57 [rad] • No target • Nocollimator Solid Angle ~11 [msr]

  4. HKS solid angle with collimator Solid Angle ~ 7.5 [msr] simulation condition • p = 1.2±0.3 [GeV/c] • θ = 0.124±0.124 [rad] • φ = 1.57±1.57 [rad] • Withcollimator

  5. summary and to do SUMMARY • High statistic in GEANT4 simulation • triggered event looks smooth but still jaggy a little  need more?? • HKS spherical uniform distribution • HKS solid angle ~7[msr] (collimator on) • Real data • EH • documents • GCOE RA • GCOE 若手イニシアティブA ~4/21 • 奨学金 ~4/30 • 学振 ~5/6 TO DO proposal paper

  6. backup

  7. HKS solid angle 4/15/2010 simulation condition solid angle ~11 [msr] • p = 1.2±0.3 [GeV/c] • θ = 0.124±0.124 [rad] • φ = 1.57±1.57 [rad] • 12C 100 [mg/cm2] target • No collimator

  8. error

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