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Mesures de Sections Efficaces pour l'hadronthérapie : développement d'un spectromètre de masse à large acceptance

Abstract : The thesis work reported in this document deals with the development of a large acceptance mass spectrometer, FRACAS, in the context of the study of the fragmentation cross section of the 12C ions on targets of medical interest for hadrontherapy. The development of this apparatus is motivated by the need of double differential fragmentation cross sections for each of the isotope produced. It will be composed of a beam monitor, a target, trackers surrounding a magnet and a time-of-flight wall.A systematic study of FRACAS, based on Monte-Carlo Geant4 simulations, was conducted and the data generated analysed with fragment identification algorithms developed in the frame of this thesis. Those simulations highlighted the influence of the position and the spatial resolution of the detectors on the identification efficiencies. An optimal configuration was then determined.Simultaneously, two of the detectors, the beam monitor and the downstream trackers, were developed. Simulations were used to determine an optimal gap thickness and strips width for the beam monitor allowing a theoretical spatial resolution of around 200 μm. Experimental measurements at LPC made it possible to characterize the performances of the manufactured prototypes however they did not permit to determine their spatial resolution. Therefore, an experiment is planned at GANIL in March 2021 to conduct those measurements.
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Submitted on : Monday, June 14, 2021 - 4:49:11 PM
Last modification on : Tuesday, June 14, 2022 - 7:08:58 AM
Long-term archiving on: : Thursday, September 16, 2021 - 8:24:06 AM


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  • HAL Id : tel-03260119, version 1


Edgar Barlerin. Mesures de Sections Efficaces pour l'hadronthérapie : développement d'un spectromètre de masse à large acceptance. Sciences de la Terre. Normandie Université, 2021. Français. ⟨NNT : 2021NORMC213⟩. ⟨tel-03260119⟩



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