Performance Estimation of Large-scale High-sensitive Compton Camera for Pyroprocessing Facility Monitoring

파이로 공정 모니터링용 대면적 고효율 콤프턴 카메라 성능 예측

  • Kim, Young-Su (Department of Nuclear Engineering, Hanyang University) ;
  • Park, Jin Hyung (Department of Nuclear Engineering, Hanyang University) ;
  • Cho, Hwa Youn (Department of Physics, Chung-Ang University) ;
  • Kim, Jae Hyeon (Department of Nuclear Engineering, Hanyang University) ;
  • Kwon, Heungrok (Department of Nuclear Engineering, Hanyang University) ;
  • Seo, Hee (Nonproliferation System Research Division, Korea Atomic Energy Research Institute) ;
  • Park, Se-Hwan (Nonproliferation System Research Division, Korea Atomic Energy Research Institute) ;
  • Kim, Chan Hyeong (Department of Nuclear Engineering, Hanyang University)
  • 김영수 (한양대학교 원자력공학과) ;
  • 박진형 (한양대학교 원자력공학과) ;
  • 조화연 (중앙대학교 물리학과) ;
  • 김재현 (한양대학교 원자력공학과) ;
  • 권흥록 (한양대학교 원자력공학과) ;
  • 서희 (한국원자력연구원 핵비확산 시스템 연구부) ;
  • 박세환 (한국원자력연구원 핵비확산 시스템 연구부) ;
  • 김찬형 (한양대학교 원자력공학과)
  • Received : 2014.09.25
  • Accepted : 2015.01.30
  • Published : 2015.03.31


Compton cameras overcome several limitations of conventional mechanical collimation based gamma imaging devices, such as pin-hole imaging devices, due to its electronic collimation based on coincidence logic. Especially large-scale Compton camera has wide field of view and high imaging sensitivity. Those merits suggest that a large-scale Compton camera might be applicable to monitoring nuclear materials in large facilities without necessity of portability. To that end, our research group have made an effort to design a large-scale Compton camera for safeguard application. Energy resolution or position resolution of large-area detectors vary with configuration style of the detectors. Those performances directly affect the image quality of the large-scale Compton camera. In the present study, a series of Geant4 Monte Carlo simulations were performed in order to examine the effect of those detector parameters. Performance of the designed large-scale Compton camera was also estimated for various monitoring condition with realistic modeling. The conclusion of the present study indicates that the energy resolution of the component detector is the limiting factor of imaging resolution rather than the position resolution. Also, the designed large-scale Compton camera provides the 16.3 cm image resolution in full width at half maximum (angular resolution: $9.26^{\circ}$) for the depleted uranium source considered in this study located at the 1 m from the system when the component detectors have 10% energy resolution and 7 mm position resolution.


Supported by : 한국연구재단


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