A fast plastic scintillator for low intensity proton beam monitoring
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arXiv
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| Format: | Preprint |
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2024
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| author | André, Adélie Hoarau, Christophe Boursier, Yannick Cherni, Afef Dupont, Mathieu Martel, Laurent Gallin Martel, Marie-Laure Gallin Garnier, Alicia Hérault, Joel Hofverberg, Johan-Petter Kavrigin, Pavel Morel, Christian Muraz, Jean-François Pinson, Maxime Tripodo, Giovanni Maneval, Daniel Marcatili, Sara |
| author_facet | André, Adélie Hoarau, Christophe Boursier, Yannick Cherni, Afef Dupont, Mathieu Martel, Laurent Gallin Martel, Marie-Laure Gallin Garnier, Alicia Hérault, Joel Hofverberg, Johan-Petter Kavrigin, Pavel Morel, Christian Muraz, Jean-François Pinson, Maxime Tripodo, Giovanni Maneval, Daniel Marcatili, Sara |
| contents | In the context of particle therapy monitoring, we are developing a gamma-ray detector to determine the ion range in vivo from the measurement of particle time-of-flight. For this application, a beam monitor capable to tag in time the incident ion with a time resolution below 235 ps FWHM (100 ps rms) is required to provide a start signal for the acquisition. We have therefore developed a dedicated detector based on a fast organic scintillator (EJ-204) of 25x25x1 mm3 coupled to four SiPM strips that allow measuring the particle incident position by scintillation light sharing. The prototype was characterised with single protons of energies between 63 and 225 MeV at the MEDICYC and ProteusONE facilities of the Antoine Lacassagne proton therapy centre in Nice. We obtained a time resolution of 120 ps FWHM at 63 MeV, and a spatial resolution of ~2 mm rms for single particles. Two identical detectors also allowed to measure the MEDICYC proton energy with 0.3% accuracy. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_07877 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | A fast plastic scintillator for low intensity proton beam monitoring André, Adélie Hoarau, Christophe Boursier, Yannick Cherni, Afef Dupont, Mathieu Martel, Laurent Gallin Martel, Marie-Laure Gallin Garnier, Alicia Hérault, Joel Hofverberg, Johan-Petter Kavrigin, Pavel Morel, Christian Muraz, Jean-François Pinson, Maxime Tripodo, Giovanni Maneval, Daniel Marcatili, Sara Instrumentation and Detectors Medical Physics In the context of particle therapy monitoring, we are developing a gamma-ray detector to determine the ion range in vivo from the measurement of particle time-of-flight. For this application, a beam monitor capable to tag in time the incident ion with a time resolution below 235 ps FWHM (100 ps rms) is required to provide a start signal for the acquisition. We have therefore developed a dedicated detector based on a fast organic scintillator (EJ-204) of 25x25x1 mm3 coupled to four SiPM strips that allow measuring the particle incident position by scintillation light sharing. The prototype was characterised with single protons of energies between 63 and 225 MeV at the MEDICYC and ProteusONE facilities of the Antoine Lacassagne proton therapy centre in Nice. We obtained a time resolution of 120 ps FWHM at 63 MeV, and a spatial resolution of ~2 mm rms for single particles. Two identical detectors also allowed to measure the MEDICYC proton energy with 0.3% accuracy. |
| title | A fast plastic scintillator for low intensity proton beam monitoring |
| topic | Instrumentation and Detectors Medical Physics |
| url | https://arxiv.org/abs/2411.07877 |