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http://dx.doi.org/10.7742/jksr.2020.14.6.725

Design of a Radiation Spectroscopy Detector using a Spherical Scintillator and Development of a Radiation Source Position Tracking System  

Lee, Seung-Jae (Department of Radiological Science, Dongseo University)
Publication Information
Journal of the Korean Society of Radiology / v.14, no.6, 2020 , pp. 725-731 More about this Journal
Abstract
A radiation spectroscopy detector using a spherical scintillator was designed, and a system was developed to track the position of a radiation source using several detectors. The position tracking algorithm was designed based on the theory that the number of radiations decreases according to the inverse square law of distance, and the position of the radiation source was calculated by measuring the number of radiations generated from the radiation sources at various positions. The radiation generated from the radiation source is detected by different coefficients in each detector, and the difference between these detected coefficients varies in proportion to the inverse square of the distance. Geant4 Application for Tomographic Emission (GATE) simulation was performed to verify and evaluate the performance of the designed radiation source position tracking system, and radiation generated from radiation sources placed at different positions was counted with each detector. The number of measured radiations was tracked through the radiation source position tracking algorithm, and the error between the actual radiation source position and the position calculated by the algorithm was evaluated. The error between the position of the actual radiation source and the calculated position was measured as an average of 0.11% on the X-axis and 0.37% on the Y-axis, and it was verified that the position can be measured very accurately.
Keywords
Radiation spectroscopy detector; Spherical scintillator; Inverse square low of distance; Radiation source position tracking;
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Times Cited By KSCI : 2  (Citation Analysis)
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