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12th International Conference on Nuclear Reaction Mechanisms, Varenna : Italy (2009)

12C nuclear reaction measurements for hadrontherapy

B. Braunn1, M. Labalme1, G. Ban1, D. Cussol1, J.M. Fontbonne1, F.R. Lecolley1, C. Pautard1, F. Haas2, D. Lebhertz2, M. Rousseau2, L. Stuttge2, M. Chevallier3, D. Dauvergne3, F. Le Foulher3, C. Ray3, E. Testa3, M. Testa3, M.D. Salsac4

(2010)

Hadrontherapy treatments require a very high precision on the dose deposition ( 2.5% and 1-2mm) in order to keep the benefits of the precise ions' ballistic. The largest uncertainty on the physical dose deposition is due to ion fragmentation. Up to now, the simulation codes are not able to reproduce the fragmentation process with the required precision. To constraint the nuclear models and complete fragmentation cross sections databases; our collaboration has performed an experiment on May 2008 at GANIL with a 95 MeV/u 12C beam. We have measured the fluence, energy and angular distributions of charged fragments and neutrons coming from nuclear reactions of incident 12C on thick water-like PMMA targets. Preliminary comparisons between GEANT4 (G4BinaryLightIonReaction) simulations and experimental data show huge discrepancies.

1 :	LPCC - Laboratoire de Physique Corpusculaire de Caen
2 :	IPHC - Institut Pluridisciplinaire Hubert Curien
3 :	IPNL - Institut de Physique Nucléaire de Lyon
4 :	IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers (ex DAPNIA)

Thème(s)

:

Physique/Physique/Physique Médicale Physique/Physique Nucléaire Expérimentale

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Contributeur : Sandrine Guesnon <>

Soumis le : Jeudi 21 Janvier 2010, 09:56:41

Dernière modification le : Mardi 13 Juillet 2010, 11:51:44