Nuclear reaction measurements of 95MeV/u 12C interactions on PMMA for hadrontherapy

B. Braunn (1) , M. Labalme (1) , G. Ban (1) , M. Chevallier (2) , J. Colin (1) , D. Cussol (1) , D. Dauvergne (3) , J.M. Fontbonne (1) , F. Haas (4) , Arnaud Guertin (5) , D. Lebhertz (4) , F. Le Foulher (3) , C. Pautard (1) , C. Ray (3) , Marc Rousseau (4) , M.D. Salsac (6) , L. Stuttge (4) , E. Testa (3) , M. Testa (3)

1 LPCC - Laboratoire de physique corpusculaire de Caen
2 CAS-PHABIO
3 IPNL - Institut de Physique Nucléaire de Lyon
4 IPHC - Institut Pluridisciplinaire Hubert Curien
5 SUBATECH - Laboratoire SUBATECH Nantes
6 IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers

The ion dose deposition in tissues is characterized by a favorable depth dose profile (i.e. Bragg peak) and a small lateral spread. In order to keep these benefits of ions in cancer treatments, a very high accuracy is required on the dose deposition (±3%). For given target stoechiometry and geometry, the largest uncertainty on the physical dose deposition is due to the ion nuclear fragmentation. We have performed an experiment at GANIL with a 95MeV/u 12C beam on thick tissue equivalent PMMA targets (thicknesses: 5, 10, 15, 20 and 25mm). The main goals of this experiment are to provide experimental fragmentation data for benchmarking the physical models used for treatment planning. Production rates, energy and angular distributions of charged fragments have been measured. The purpose of this paper is to present the results of this experiment.

Mots clés: Hadrontherapy; 12C fragmentation

Domaines: Physique Nucléaire Expérimentale [nucl-ex]; Physique Médicale [physics.med-ph]

B. Braunn, M. Labalme, G. Ban, M. Chevallier, J. Colin, et al.. Nuclear reaction measurements of 95MeV/u 12C interactions on PMMA for hadrontherapy. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2011, 269, pp.2676-2684. ⟨10.1016/j.nimb.2011.08.010⟩. ⟨in2p3-00619633⟩