Optimization of the collimator mask for the rotational modulation collimator-based gamma-ray/neutron dual-particle imager

2019 ◽  
Vol 19 (7) ◽  
pp. 856-865
Author(s):  
Hyun Suk Kim ◽  
Sung-Joon Ye ◽  
Gyemin Lee ◽  
Geehyun Kim
Keyword(s):  
Gamma Ray ◽  
Rotational Modulation ◽  
Modulation Collimator

scholarly journals Design and Fabrication of CLYC-Based Rotational Modulation Collimator (RMC) System for Gamma-Ray/Neutron Dual-Particle Imager

2021 ◽  
Vol 46 (3) ◽  
pp. 112-119
Author(s):  
Hyun Suk Kim ◽  
Jooyub Lee ◽  
Sanghun Choi ◽  
Young-bong Bang ◽  
Sung-Joon Ye ◽  
...  
Keyword(s):  
Gamma Ray ◽  
Imaging System ◽  
Pulse Shape Discrimination ◽  
Operational Performance ◽  
Shape Discrimination ◽  
Imaging Capability ◽  
Rotational Modulation ◽  
Accuracy And Precision ◽  
Modulation Collimator ◽  
Particle Imaging

Background: This work aims to develop a new imaging system based on a pulse shape discrimination-capable Cs2LiYCl6:Ce (CLYC) scintillation detector combined with the rotational modulation collimator (RMC) technique for dual-particle imaging.Materials and Methods: In this study, a CLYC-based RMC system was designed based on Monte Carlo simulations, and a prototype was fabricated. Therein, a rotation control system was developed to rotate the RMC unit precisely, and a graphical user interface-based software was also developed to operate the data acquisition with RMC rotation. The RMC system was developed to allow combining various types of collimator masks and detectors interchangeably, making the imaging system more versatile for various applications and conditions.Results and Discussion: Operational performance of the fabricated system was studied by checking the accuracy and precision of the collimator rotation and obtaining modulation patterns from a gamma-ray source repeatedly.Conclusion: The prototype RMC system showed reliability in its mechanical properties and reproducibility in the acquisition of modulation patterns, and it will be further investigated for its dual-particle imaging capability with various complex radioactive source conditions.

Development of the Hemispherical Rotational Modulation Collimator Imaging System

2019 ◽  
Vol 66 (9) ◽  
pp. 2114-2122
Author(s):  
Hyun Suk Kim ◽  
Minho Na ◽  
Jong G. Ok ◽  
Geehyun Kim ◽  
Sung-Joon Ye
Keyword(s):  
Imaging System ◽  
Rotational Modulation ◽  
Modulation Collimator

Radiation imaging with a rotational modulation collimator (RMC) coupled to a Cs2LiYCl6:Ce (CLYC) detector

2016 ◽  
Vol 69 (11) ◽  
pp. 1644-1650 ◽  
Author(s):  
Hyun Suk Kim ◽  
Sung-Joon Ye ◽  
Youngjun Shin ◽  
Gyemin Lee ◽  
Geehyun Kim
Keyword(s):  
Radiation Imaging ◽  
Rotational Modulation ◽  
Modulation Collimator
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