Development of a Si-PM based alpha camera for plutonium detection in nuclear fuel facilities

Yuki Morishita*, Seiichi Yamamoto, Kenji Izaki, Junichi H. Kaneko, Kohei Toi, Youichi Tsubota

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

37 Citations (Scopus)


Alpha particles are monitored for detecting nuclear fuel material (i.e., plutonium and uranium) at nuclear fuel facilities. Currently, for monitoring the airborne contamination of nuclear fuel, only energy information measured by Si-semiconductor detectors is used to distinguish nuclear fuel material from radon daughters. In some cases, however, such distinguishing is difficult when the radon concentration is high. In addition, a Si-semiconductor detector is generally sensitive to noise. In this study, we developed a new alpha-particle imaging system by combining a Si-PM array, which is insensitive to noise, with a Ce-doped Gd3Al2Ga3O12(GAGG) scintillator, and evaluated our developed system.

Original languageEnglish
Pages (from-to)81-86
Number of pages6
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Publication statusPublished - 2014 May 21
Externally publishedYes


  • Alpha detector
  • GAGG
  • Imaging
  • Plutonium contamination
  • Si-PM

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation


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