Abstract
The purpose of this work is to optimize the number of holes in each layer with the Monte Carlo simulation tool, GATE, a variable collimator of the non-replaceable types that makes up for pinhole collimator's shortcomings. The material is tungsten and the detector size is 25.8 × 25.8 × 3.0 mm3 GAGG with 0.7 × 0.7 × 3.0 mm3 pixels arranged in 29 × 29 × 1 and performance is evaluated based on the field-of-view, sensitivity, and spatial resolution by magnification for the point source 137Cs. Simulations were designed to optimize the five layers from 44, 55, 11, 55, 44 to 6, 9, 3, 9, and 6 to meet the feasibility of manufacturing collimators. We also confirmed performance errors of 5.7% sensitivity and 5.2% spatial resolution compared to using an ideal variable collimator for all parameters, such as specific purposes and magnification scale. Through these results, we propose an environmental monitoring system that can be used for diverse radiation disasters by enabling image magnification and transforming the shape of the collimator.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
