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A shutdown dose rates analysis of the Korean fusion demonstration reactor using MCNP5 mesh-based R2S approach

Title
A shutdown dose rates analysis of the Korean fusion demonstration reactor using MCNP5 mesh-based R2S approach
Author
홍서기
Keywords
K-DEMO; Shutdown dose rate; Mesh-based R2S method
Issue Date
2021-02
Publisher
ELSEVIER SCIENCE SA
Citation
FUSION ENGINEERING AND DESIGN, v. 167, article no. 112321, page. 1-9
Abstract
In the fusion reactor, lots of high energy neutrons are produced by the nuclear fusion reaction, which produces unstable nuclides emitting gamma rays in various components of fusion energy systems. So, estimation of shut down dose rate in such facilities is very important to check if the dose rates are below the radiational safety limits. Generally, two computational analysis schemes of the cell-based Rigorous-2-Step (R2S) method and the Direct-1-Step (D1S) method have been used widely in evaluating the shutdown dose rates. In this work, the mesh-based R2S method is automated with in-house auxiliary programs for our practical applications. This meshbased R2S procedure was applied to the Korean fusion demonstration reactor (K-DEMO) facility. From the analysis for K-DEMO, it was shown that the automated mesh-based R2S procedure gives much higher computational efficiencies in terms of FOM than the cell-based R2S method and gives higher shutdown dose rates than the cell-based R2S and D1S method.
URI
https://www.sciencedirect.com/science/article/pii/S0920379621000971?via%3Dihubhttps://repository.hanyang.ac.kr/handle/20.500.11754/175844
ISSN
0920-3796; 1873-7196
DOI
10.1016/j.fusengdes.2021.112321
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > NUCLEAR ENGINEERING(원자력공학과) > Articles
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