Development of high-performance and multi-purpose Compton camera

  • Development of Compton cameras (double-scattering-type, dual-mode, and 4π- type) with position-sensitive semiconductor detectors and scintillation detectors for nuclear decommissioning and homeland security applications
  • Development of ASIC-based and hybrid-type multi-channel signal processing circuits for radiation imaging detectors
  • System characterization and optimization of Compton camera to maximize its performance by using Monte Carlo simulations with Geant4
  • Development of three-dimensional image reconstruction algorithms based on maximum-likelihood expectation-maximization (MLEM) method for Compton camera

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Development of real-time and in vivo proton dose verification technology for proton therapy application

  • Development of high-energy gamma sensors based on CsI(Tl) scintillator assembly, photodiodes, PS-PMT, etc. for accurate measurement of prompt gammas
  • Development of dedicated preamplifiers, amplifiers, multi-channel signal processing circuits, multi-channel analyzer (MCA), and various control software
  • Design and optimization of prompt gamma detection system by Monte Carlo simulations with MCNPX and Geant4
  • Performance evaluation in terms of reproducibility and reliability of the verification system for real-time and in vivo monitoring of dose distribution from therapeutic proton beams

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Development of advanced computational human phantoms for accurate dose calculation and imaging applications

  • Development of various computational phantoms for radiation dose calculations including reference Korean phantoms (HDRK-Man, HDRK-Woman), RANDO phantoms, CIRS adult phantoms, hybrid-type phantoms, etc.
  • Development of deformable surface-based human phantoms for 4-D Monte Carlo dose calculations and imaging simulations
  • Direct implementation of surface phantoms in general-purpose Monte Carlo radiation transport codes
  • Improvement of computing speed by optimizing radiation transport kernel in Monte Carlo codes and using modern computing technologies such as parallel computing and GPGPU programming

※ For more detailed information, please watch movie clips:
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Research collaborations with Geant4 development group at CERN

  • Study on multi-scale Monte Carlo radiation transport simulation in identical experimental environment exploring feasibility of environmental adaptability and mutants (*NANO5 collaboration)
  • Development and validation of electron ionization cross section models for nano-scale simulation (*NANO5 collaboration)
  • Development of new physics data libraries and advanced data management methods (*NANO5 collaboration)
  • Development of solid model and dedicated navigator in Geant4 to implement DAGMC algorithms in polygon-mesh geometry (*a separate research collaboration of Hanyang University, University of Wisconsin-Madison, and CERN)