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| Titre : |
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Monte Carlo simulations of prompt-gamma emission during carbon ion irradiation |
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| Auteur : |
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F. Le Foulher1, M. Bajard1, M. Chevallier1, D. Dauvergne1, N. Freud2, P. Henriquet1, S. Karkar3, J.M. Létang2, L. Lestand4, R. Plescak, C. Ray1, D. Schardt, E. Testa1, M. Testa1 |
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CAS-PHABIO |
| Résumé : |
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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. |
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| Type de publication : |
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Articles dans des revues avec comité de lecture |
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Date de publication
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2010 |
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| Nom du périodique : |
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| IEEE Transactions on Nuclear Science (IEEE Trans. Nucl. Sci.) |
| Publisher |
Institute of Electrical and Electronics Engineers (IEEE) |
| ISSN |
0018-9499 |
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| Volume : |
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57 (5) |
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| Page/Article : |
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2768-2772 |
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| Commentaire : |
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accepted for publication in IEEE TNS |
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