Monte Carlo simulations of prompt-gamma emission during carbon ion irradiation - IN2P3 - Institut national de physique nucléaire et de physique des particules Accéder directement au contenu
Article Dans Une Revue IEEE Transactions on Nuclear Science Année : 2010

Monte Carlo simulations of prompt-gamma emission during carbon ion irradiation

Résumé

Monte Carlo simulations based on the Geant4 toolkit (version 9.1) were performed to study the emission of secondary prompt-gamma rays produced by nuclear reactions during carbon ion-beam therapy. These simulations were performed along with an experimental program and instrumentation developments which aim at designing a prompt-gamma ray device for real-time control of hadrontherapy. The objective of the present study is twofold: firstly, to present the features of the prompt-gamma radiation in the case of carbon ion irradiation; secondly, to simulate the experimental setup and to compare measured and simulated counting rates corresponding to four different experiments. For each experiment, we found that simulations overestimate prompt-gamma ray detection yields by a factor of 12. Uncertainties in fragmentation cross sections and binary cascade model cannot explain such discrepancies. The so-called “photon evaporation” model is therefore questionable and its modification is currently in progress.
Fichier principal
Vignette du fichier
Paper_HAL.pdf (373.66 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

in2p3-00480024 , version 1 (03-05-2010)

Identifiants

  • HAL Id : in2p3-00480024 , version 1

Citer

F. Le Foulher, M. Bajard, M. Chevallier, D. Dauvergne, N. Freud, et al.. Monte Carlo simulations of prompt-gamma emission during carbon ion irradiation. IEEE Transactions on Nuclear Science, 2010, 57 (5), pp.2768-2772. ⟨in2p3-00480024⟩
106 Consultations
476 Téléchargements

Partager

Gmail Facebook X LinkedIn More