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 30 × 32 cm2. 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 20 μ A. The proposed neutron beam profile detector will be useful, for example, in radiotherapy applications with neutron intensities above 107 Hz / cm2.
Original language | English |
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Pages (from-to) | 276-280 |
Number of pages | 5 |
Journal | Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment |
Volume | 609 |
Issue number | 2-3 |
DOIs | |
Publication status | Published - 2009 Oct 11 |
Bibliographical note
Funding Information:We would like to thank Drs. Taekeun Yang and Yu-Seok Kim at KIRAMS for making the neutron beams available to us. We are also grateful to Dr. Sangryul Kim at NOTICEKOREA for the development and the manufacture of the current-mode signal processing electronics board. This work was supported in part by the Ministry of Science and Technology, Republic of Korea (Grant no. M20709005437-07B0900-43710).
Keywords
- Current-mode electronics
- Line scanning
- Neutron beam
- Proton accelerator
- Scintillation fiber
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Instrumentation