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HES HKS meeting

HES HKS meeting. 4/8/2010 T.Gogami. Today’s talk. GEANT4 spherical uniform distribution (HES) 12 Λ B g.s . width simulation. Particle distribution around target. r=1 [cm]. 2/24/2010. HESPrimaryGeneratorAction.cc. input/ sample.in θ , Δθ , φ , Δφ. Δθ. θ. Δθ. min. max. Δa. Δa.

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HES HKS meeting

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  1. HES HKS meeting 4/8/2010 T.Gogami

  2. Today’s talk • GEANT4 • spherical uniform distribution (HES) • 12ΛB g.s. width • simulation

  3. Particle distribution around target r=1 [cm] 2/24/2010

  4. HESPrimaryGeneratorAction.cc input/sample.in θ, Δθ , φ , Δφ Δθ θ Δθ min max Δa Δa a

  5. check θ= 0.5 ± 0.2 [rad] φ = 0 ± π [rad] θ= 0.3 ± 0.3 [rad] φ = 0 ± π [rad]

  6. check θ= 0.4 ± 0.3 [rad] φ = 0.5 ± π/2 [rad] works well

  7. HES solid angle using new code(spherical uniform distribution) with Collimator : 5 [msr] without Collimator: 7 [msr]

  8. 12ΛB g.s. width is wider than others generated main peak event num. = 1300 = N second peak event num. = N/3 resolution = 500 [keV] background : peak max. = 1 : 4 [MeV] [MeV] [MeV] [MeV]

  9. 12ΛB g.s. width is wider than others • Width(1σ) (FWHM) 497.5 – 559.9 [keV] • mean(1σ) 35.52 – 62.46 [keV] generated iterated num. = 10000 All event num. =700 = N second peak event num. = N/3 second peak pos. = +150 [keV] resolution = 500 [keV] background : peak max. = 1 : 4

  10. まとめ & to do • まとめ • (GEANT4)spherical uniform distribution for HES • HES solid angle ~7 [msr] (without collimator) • 12ΛB g.s. Simulation (+150 [keV] , resolution 500 [keV](FWHM)) Width(1σ) (FWHM) 497.5 – 559.9 [keV] • To do • (GEANT4) • spherical uniform distribution for HKS • solid angle • matrix • Real data • EH2 • …

  11. backup

  12. EPhi vs. ETheta

  13. 12ΛB g.s. width is wider than others generated main peak event num. = 1300 = N second peak event num. = N/2 resolution = 500 [keV] background : peak max. = 1 : 4 [MeV] [MeV] [MeV] [MeV]

  14. 12ΛB g.s. width is wider than others generated main peak event num. = 1300 = N second peak event num. = N resolution = 500 [keV] background : peak max. = 1 : 4 [MeV] [MeV] [MeV] [MeV]

  15. 12ΛB g.s. width is wider than others • Width(1σ) (FWHM) 483.0 – 542.8 [keV] • mean(1σ) 19.81 – 46.31 [keV] generated iterated num. = 10000 All event num. =700 = N second peak event num. = N/3 second peak pos. = +100 [keV] resolution = 500 [keV] background : peak max. = 1 : 4

  16. 12ΛB g.s. width is wider than others • Width(1σ) (FWHM) 317.6 – 583.8 [keV] • mean(1σ) 50.8 – 78.4 [keV] generated iterated num. = 10000 All event num. =700 = N second peak event num. = N/3 second peak pos. = +200 [keV] resolution = 500 [keV] background : peak max. = 1 : 4

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