Geant4 Geometry and Simulation May/31/2001 GLAST Balloon Analysis - - PowerPoint PPT Presentation

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Geant4 Geometry and Simulation May/31/2001 GLAST Balloon Analysis - - PowerPoint PPT Presentation

Jan 28, 2024 253 likes •322 views

Geant4 Geometry and Simulation May/31/2001 GLAST Balloon Analysis VRVS meeting Tsunefumi Mizuno mizuno@hirax6.hepl.hiroshima-u.ac.jp mizuno@SLAC.Stanford.EDU Detector Geometry Detectors and pressure vessel are implemented Now shooting

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SLIDE 1

Geant4 Geometry and Simulation

May/31/2001 GLAST Balloon Analysis VRVS meeting Tsunefumi Mizuno mizuno@hirax6.hepl.hiroshima-u.ac.jp mizuno@SLAC.Stanford.EDU

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SLIDE 2

Detector Geometry

  • Detectors and pressure vessel are implemented

Now shooting cosmic-ray proton/electron to verify the simulator and to study background

  • Gondola is almost ready

Next: bombard particle aimed at gondola

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SLIDE 3

Cosmic-ray Generator

Downward proton Downward electron

  • Proton and electron generator are constructed based
  • n AMS/BESS experiment
  • Solar modulation and geomagnetic effect are

implemented on primary component

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SLIDE 4

Proton aimed at 4 XGTs

About 6% of protons aimed at XGTs will give level1 trigger (here, albedo means reentrant+splash)

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SLIDE 5

Proton aimed at 4 XGTs

1M events run (2.5M protons in 6 hours) 3k L1T events (0.3-0.4Hz) 60k L1T events (~7Hz) downward upward (here, albedo means reentrant+splash)

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SLIDE 6

Proton aimed at Pressure Vessel

500k events run (~15k/s when aimed at PV) 10-15Hz L1T ~200Hz L1T downward upward (here, albedo means reentrant+splash)