Physics Settings for Using the Geant4 Toolkit in Proton Therapy

Physics Settings for Using the Geant4 Toolkit in Proton Therapy

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 th...

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Veröffentlicht in:IEEE transactions on nuclear science 2008-06, Vol.55 (3), p.1018-1025
Hauptverfasser: Jarlskog, C.Z., Paganetti, H.
Format: Artikel
Sprache:eng
Schlagworte:
Beams (structural)
Charge measurement
Computer simulation
Current measurement
Electromagnetic measurements
Geant4
Medical treatment
Modular
Monte Carlo
Monte Carlo methods
Multilayers
Nonhomogeneous media
Particle beams
Physics
physics validation
Polyethylene
proton therapy
Protons
Stacks
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Beschreibung
Zusammenfassung: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.
ISSN:0018-9499
1558-1578
DOI:10.1109/TNS.2008.922816