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Physics Settings for Using the Geant4 Toolkit in Proton Therapy
Ist Teil von
IEEE transactions on nuclear science, 2008-06, Vol.55 (3), p.1018-1025
Ort / Verlag
New York: IEEE
Erscheinungsjahr
2008
Quelle
IEEE/IET Electronic Library
Beschreibungen/Notizen
We simulated electromagnetic and nuclear processes induced by clinical proton beams in order to select the physics setting for the 8.1 version of the Geant4 toolkit. A modular physics list was constructed allowing for alternative processes and models to be invoked in the simulations. We validated the Monte Carlo by means of measured depth-dose distributions in water for 86 MeV and 209 MeV beams and measured longitudinal charge profiles in a stack of polyethylene absorbers (multilayer Faraday cup) for a 160 MeV beam. Best agreement between simulation and measurement was found for the standard electromagnetic and binary cascade models of Geant4.