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http://dx.doi.org/10.1016/j.net.2021.12.035

Experimental evaluation of fuel rod pattern analysis in fuel assembly using Yonsei single-photon emission computed tomography (YSECT)  

Choi, Hyung-joo (Department of Radiation Convergence Engineering, Yonsei University)
Cheon, Bo-Wi (Department of Radiation Convergence Engineering, Yonsei University)
Baek, Min Kyu (Department of Radiation Convergence Engineering, Yonsei University)
Chung, Heejun (The Korea Institute of Nuclear Nonproliferation and Control)
Chung, Yong Hyun (Department of Radiation Convergence Engineering, Yonsei University)
You, Sei Hwan (Department of Radiation Oncology, Yonsei University Wonju College of Medicine)
Min, Chul Hee (Department of Radiation Convergence Engineering, Yonsei University)
Choi, Hyun Joon (Department of Radiation Oncology, Yonsei University Wonju College of Medicine)
Publication Information
Nuclear Engineering and Technology / v.54, no.6, 2022 , pp. 1982-1990 More about this Journal
Abstract
The purpose of this study was to verify the possibility of fuel rod pattern analysis in a fresh fuel assembly using the Yonsei single-photon emission computed tomography (YSECT) system. The YSECT system consisted of three main parts: four trapezoidal-shaped bismuth germanate scintillator-based 64-channel detectors, a semiconductor-based multi-channel data acquisition system, and a rotary stage. In order to assess the performance of the prototype YSECT, tomographic images were obtained for three representative fuel rod patterns in the 6 × 6 array using two representative image-reconstruction algorithms. The fuel-rod patterns were then assessed using an in-house fuel rod pattern analysis algorithm. In the experimental results, the single-directional projection images for those three fuel-rod patterns well discriminated each fuel-rod location, showing a Gaussian-peak-shaped projection for a single 10 mm-diameter fuel rod with 12.1 mm full-width at half maximum. Finally, we successfully verified the possibility of the fuel rod pattern analysis for all three patterns of fresh fuel rods with the tomographic images obtained by the rotational YSECT system.
Keywords
Yonsei single-photon emission computed; tomography (YSECT); Nuclear fuel assembly; Prototype; Fuel rod pattern analysis; Experiment;
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