Geant4 status and applications John Apostolakis, CERN for Geant4 collaboration.
Geant4 Accuracy and Benchmarking
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Transcript of Geant4 Accuracy and Benchmarking
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Geant4 Accuracy and Benchmarking
Bruce Faddegon, UCSF
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Geant4 e-/x-ray RT benchmarks
• SLAC– Makoto Asai– Tsukasa Aso– Joseph Perl– Jane Tinslay
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Thick-target bremsstrahlung measurement at 10-30 MV
• Subtract pile-up spectrum and bkg• Add counts lost to pulse pile-up• Unfold detector response• Add counts lost to attenuation and
detector efficiency• Collimator effect
BA Faddegon, CK Ross, DWO Rogers, Medical Physics 17(5):773-785, 1990BA Faddegon, CK Ross, DWO Rogers, Medical Physics 18(4):727-739, 1991
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No Bremsstrahlung SplittingGeant 4.7.1/EGSnrc
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Be Al Pb
Relative Simulation Time
Bremsstrahlung Splitting x 100Geant 4.8.0/EGSnrc
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Be Al Pb
Relative Simulation Time