Development of thin gaseous ionization detectors for measurements of high-energy hadron beams

Kyong Sei Lee, Byungsik Hong, Kisoo Lee, Sung Keun Park, Jaehee Yu, Sang Yeol Kim

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Thin gaseous ionization detectors have been developed based on a current-integration mode for measurements of high-energy hadron beams. In the present detector R&D, two different types of prototype detectors with an active area of 16 × 16 cm2, each equipped with 256-signal processing channels, were manufactured and tested with 43-MeV protons provided by the MC50 proton cyclotron at the Korea Institute of Radiological and Medical Science (KIRAMS). The first one was equipped with a single gas electron multiplier (GEM), and the second one was a thin-plane ionization detector without the GEM foil loaded. The linearities of the detector responses for both detectors were examined for various proton-beam intensities. The quantitative accuracies for the channel-response data and for the total detector responses measured for 43-MeV protons were 0.4% and 0.34%, respectively. We conclude from the beam test that operating both types of detectors in the current-integration mode will allow quality measurements of dynamic-mode hadron beams to be performed with accuracies of better than 1%.

Original languageEnglish
Pages (from-to)958-964
Number of pages7
JournalJournal of the Korean Physical Society
Issue number7
Publication statusPublished - 2014


  • Beam monitor
  • Doseverification measurement
  • Gas electron multiplier
  • Gaseous ionization detector
  • Hadron beam

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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