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Characterization of a beam-tagging hodoscope for hadrontherapy monitoring

Abstract : A beam tagging hodoscope prototype made of squared 1 mm2 fibers arranged in two perpendicular planes and coupled to multi-anode photomultipliers has been studied using 65 MeV proton as well as 95 MeV/u 12C beams at various intensities. This hodoscope successfully provided 2D images of proton beams with a detection efficiency larger than 98% with logical OR condition between the two fiber planes. The detection efficiency with a coincidence between the two planes is close to 75% for beam intensities up to ~1 MHz. Moreover, the timing resolution is around 1.8 ns FWHM. Overall, the performances show that such a technology is viable for beam monitoring during hadrontherapy.
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Contributor : Béatrice Rayet <>
Submitted on : Friday, January 8, 2021 - 11:34:49 AM
Last modification on : Monday, March 29, 2021 - 3:22:59 PM
Long-term archiving on: : Friday, April 9, 2021 - 6:46:20 PM


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Oreste Allegrini, J. P. Cachemiche, C.P.C. Caplan, Bruno Carlus, Xiushan Chen, et al.. Characterization of a beam-tagging hodoscope for hadrontherapy monitoring. Journal of Instrumentation, IOP Publishing, 2021, 16, pp.P02028. ⟨10.1088/1748-0221/16/02/P02028⟩. ⟨hal-03103624⟩



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