Nuclear Engineering and Technology

  • 제52권11호
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  • Pages.2572-2580
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  • 2020
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  • 1738-5733(pISSN)
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  • 2234-358X(eISSN)
한국원자력학회 (Korean Nuclear Society)
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Development of hand-held coded-aperture gamma ray imaging system based on GAGG(Ce) scintillator coupled with SiPM array

  • 투고 : 2020.02.04
  • 심사 : 2020.04.08
  • 발행 : 2020.11.25
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초록

Emerging gamma ray detection applications that utilize neutron-based interrogation result in the prompt emission of high-energy (>2 MeV) gamma-rays. Rapid imaging is enabled by scintillators that possess high density, high atomic number, and excellent energy resolution. In this paper, we evaluate the bright (50,000 photons/MeV) oxide scintillator, cerium-doped Gd2Al2Ga3O12 (GAGG(Ce)). A silicon photomultiplier (SiPM) array is coupled to a GAGG(Ce) scintillator array (12 × 12 pixels) and integrated into a coded-aperture based gamma-ray imaging system. A resistor-based symmetric charge division circuit was used reduce the multiplicity of the analog outputs from 144 to 4. The developed system exhibits 9.1%, 8.3%, and 8.0% FWHM energy resolutions at 511 keV, 662 keV, and 1173.2 keV, respectively. In addition, a pixel-identification resolution of 602 ㎛ FWHM was obtained from the GAGG(Ce) scintillator array.

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참고문헌

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피인용 문헌

  1. Impact of aperture-thickness on the real-time imaging characteristics of coded-aperture gamma cameras vol.53, pp.4, 2021, https://doi.org/10.1016/j.net.2020.09.012
  2. Development of a modular high-sensitivity high-uniformity gamma camera for radiation monitoring applications vol.1003, 2020, https://doi.org/10.1016/j.nima.2021.165340
  3. A Comprehensive Survey of Readout Strategies for SiPMs Used in Nuclear Imaging Systems vol.8, pp.7, 2020, https://doi.org/10.3390/photonics8070266
  4. Performance studies of compact GGAG:Ce,B thermal neutron detector coupled to Si-based photosensors vol.95, pp.4, 2020, https://doi.org/10.1007/s12043-021-02249-z
  5. Compact lightweight imager of both gamma rays and neutrons based on a pixelated stilbene scintillator coupled to a silicon photomultiplier array vol.11, pp.1, 2020, https://doi.org/10.1038/s41598-021-83530-4