Scintillation fiber array detector for measurement of neutron beam profile

Chong Kim, Byungsik Hong, Mihee Jo, Kyong Sei Lee, Kwang Souk Sim

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


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 languageEnglish
Pages (from-to)276-280
Number of pages5
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Issue number2-3
Publication statusPublished - 2009 Oct 11


  • Current-mode electronics
  • Line scanning
  • Neutron beam
  • Proton accelerator
  • Scintillation fiber

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation


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