Energy Loss

Toshiyuki Gogami15Apr2013

Simulation

Particles are generated at the center of target

Randomly generation points are moved in the target thickness

Fitted by the single landau function

K+ : HKS GEANT4E’ : POSI GEANT4

EXAMPLE(POSI , 12C , 100mg/cm2)

Results of Energy LossTarget K+ (1.2 GeV) e’ (3.0 GeV)

208Pb 50mg/cm2 21.8 ± 0.10 22.1 ± 0.06

208Pb 100mg/cm2 45.5 ± 0.17 46.1 ± 0.09

208Pb 200mg/cm2 96.3 ± 0.26 99.8 ± 0.21

12C 100mg/cm2 72.7 ± 0.06 63.0 ± 0.06

Unit : keV These values are peak center values derived by the fitting

Results of Straggling(Rough estimations)

Target K+ (1.2 GeV) e’ (3.0 GeV)

208Pb 50mg/cm2 40 40

208Pb 100mg/cm2 90 90 208Pb 200mg/cm2 190 20012C 100mg/cm2 140 120

Unit : keV These values are derived just by multiplying the energy loss values by 2

END