Speaker
Till Tobias Boehlen
(CERN/KI/SU)
Description
Introduction:
An accurate prediction of radiation fields resulting from therapeutic carbon ions in the patient is needed in order to evaluate correctly their biological effectiveness.
Materials and Methods:
Hadronic models of the Monte Carlo transport codes: Geant4 and Fluka, are benchmarked for regimes relevant for therapeutic carbon ions. The ability of the Monte Carlo codes to reproduce measured
fluencies of secondary fragments for a thick-target experiment at differing depths in water is evaluated by simulating the detailed experimental set-up and time-of-flight measurement techniques. Integral and double-differential fluencies are compared. The Geant4 models: BIC, QMD, Fermi Break-up, and Multifragmentation
are tested.
Conclusions:
Agreement within approximate limits of 50% is found for both codes for integral fragment fluencies. Discrepancies between simulations and measurements are specially for forward-directed fragments (0-2 degree). Geant4 tends to underestimate small-angle fluencies whereas larger angles tend to be overestimated.
Keymords
validation study, hadron therapy, carbon ion, fragmentation, hadronic models
Summary
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| Are you a Memeber of the Geant4 Collaboration (yes/no) | currently under consideration |
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Author
Till Tobias Boehlen
(CERN/KI/SU)
