Scintillation fiber array detector for measurement of neutron beam profile |
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Authors: | Chong Kim Byungsik Hong Mihee Jo Kyong Sei Lee Kwang-Souk Sim |
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Affiliation: | aDepartment of Physics, Korea University, Seoul 136-701, Republic of Korea |
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Abstract: | We built and tested a detector to measure the profile of fast-neutron beams delivered by the MC50 cyclotron at the Korea Institute of Radiological and Medical Science (KIRAMS). The core component of the detector is a 2×46 array of scintillation fibers. The light output of the scintillation fibers is transformed into a current signal by a 46-channel silicon photodiode and digitized by a current-mode signal processor. This scanning device was designed to cover a neutron beam area of . The detector was tested in a neutron beam delivered by the MC50 cyclotron at KIRAMS. We demonstrate that the detector can successfully measure the neutron beam profile at various beam currents from 10 to . The proposed neutron beam profile detector will be useful, for example, in radiotherapy applications with neutron intensities above . |
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Keywords: | Scintillation fiber Neutron beam Current-mode electronics Proton accelerator Line scanning |
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