A novel reconstruction algorithm based on density clustering for cosmic-ray muon scattering inspection

Linjun Hou; Quanhu Zhang; Jianqing Yang; Xingfu Cai; Qingxu Yao; Yonggang Huo; Qifan Chen

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자료유형: 학술저널

저자정보: Linjun Hou (Xi’an Research Institute of Hi-Tech) Quanhu Zhang (Xi’an Research Institute of Hi-Tech) Jianqing Yang (Xi’an Research Institute of Hi-Tech) Xingfu Cai (Xi’an Research Institute of Hi-Tech) Qingxu Yao (Xi’an Research Institute of Hi-Tech) Yonggang Huo (Xi’an Research Institute of Hi-Tech) Qifan Chen (Xi’an Research Institute of Hi-Tech)

저널정보: 한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology 제53권 제7호

발행연도: 2021.7

수록면: 2,348 - 2,356 (9page)

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As a relatively new radiation imaging method, the cosmic-ray muon scattering imaging technology canbe used to prevent nuclear smuggling and is of considerable significance to nuclear safety. Proposed inthis paper is a new reconstruction algorithm based on density clustering, aiming to improve inspectionquality with better performance. Firstly, this new algorithm is introduced in detail. Then in order toeliminate the inequity of the density threshold caused by the heterogeneity of the muon flux in differentpositions, a new flux correction method is proposed. Finally, three groups of simulation experiments arecarried out with the help of Geant4 toolkit to optimize the algorithm parameters, verify the correctionmethod and test the inspection quality under shielded condition, and compare this algorithm withanother common inspection algorithm under different conditions. The results show that this algorithmcan effectively identify and locate nuclear material with low misjudging and missing rates even whenthere is shielding and momentum precision is low, and the threshold correcting method is universallyeffective for density clustering algorithms.

#Radiation imaging #Reconstruction algorithm #Cosmic-ray muon #Nuclear safety

참고문헌 (34)

참고문헌 신청

E.P. George / 1955 / Cosmic Rays Measure Overburden of Tunnel :455

L. W. Alvarez / 1970 / Search for hidden chambers in the pyramids / Science 167(3919):832~839

K. Morishima / 2017 / Discovery of a big void in Khufu’s Pyramid by observation of cosmic-ray muons / Nature 552:386~390

H. K. M. Tanaka / 2014 / Radiographic visualization of magma dynamics in an erupting volcano / Nat. Commun 5(1):1~9

G. Ambrosi / 2011 / The MU-RAY project : volcano radiography with cosmic-ray muons / Nucl. Instrum. Methods Phys. Res. A 628:120~123

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