15–22 Oct 2009
Laboratori Nazionali del Sud - INFN
Europe/Rome timezone

INVESTIGATING THE ACCURACY OF HADRONIC MODELS FOR CARBON ION THERAPY

16 Oct 2009, 18:10
20m
Room "Azzurra" (Laboratori Nazionali del Sud - INFN)

Room "Azzurra"

Laboratori Nazionali del Sud - INFN

Via S. Sofia 62, Catania (I)
Oral presentation Users Workshop Users' Workshop Parallel Session VIII - Medical

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

Primary author

Presentation materials