Study of a Compton backscattering wall defects detection device using the Monte Carlo method

• Autorzy: Qin Xuan , Yang Jianbo , Du Zhengcong , Xu Jie , Li Rui , Li Hui , Liu Qi

Identyfikatory

DOI

10.2478/nuka-2023-0008

• Języki publikacji: EN

Abstrakty

EN

In view of the shortcomings of traditional wall defect detection methods, such as small detection range, poor accuracy, non-portable device, and so on, a wall defects detection device based on Compton backscattering technology is designed by Monte Carlo method, which is mainly used to detect the size and location information of defects in concrete walls. It mainly consists of two parts, the source container and the detection system: first, through the simulation and analysis of the parameters such as the receiving angle of thebackscattered particles and the rear collimating material of the detector, the influence of the fluorescent X-ray peak of the detector collimating material on the backscattered particle counts is eliminated and the detected error is reduced; second, the ring array detector design, compared with single array detector and surface array detector, can facilitate real-time detection of defect orientation, expanding the single scan range and improving the detection efficiency. After simulation and comparative analysis, the relevant optimal parameters are obtained: the object is detected using a Cs-137 γ-ray source with an activity of 6 mCi, and a ring detector consisting of four 0.5-inch cube-shaped CsI scintillator detectors is placed at 150° to receive the backscattered photons. The simulation analysis using the Monte Carlo FLUKA program showed that the maximum depth of wall defect detection is 8 cm, the maximum error fl uctuation range of defect depth and thickness is ±1 cm, the overall device weight is <20 kg, and the measurement time is <5 min.

Słowa kluczowe

EN

compton backscattering; Monte Carlo; nondestructive testing; wall defect

• Wydawca: Institute of Nuclear Chemistry and Technology
• Czasopismo: Nukleonika
• Rocznik: 2023
• Tom: Vol. 68, No. 2
• Strony: 57--63
• Opis fizyczny: Bibliogr. 22 poz., rys.

Twórcy

autor

Qin Xuan

• Chengdu University of Technology Chengdu, Sichuan 610059, China

autor

Yang Jianbo

• Chengdu University of Technology Chengdu, Sichuan 610059, China
• Sichuan University of Science & Engineering Zigong, Sichuan 643000, China

• https://orcid.org/0000-0001-8429-5018

autor

Du Zhengcong

• Xichang University Xichang, Sichuan 615000, China

autor

Xu Jie

• Chengdu University of Technology Chengdu, Sichuan 610059, China

autor

Li Rui

• Chengdu University of Technology Chengdu, Sichuan 610059, China

autor

Li Hui

• Chengdu University of Technology Chengdu, Sichuan 610059, China

autor

Liu Qi

• Sichuan University of Science & Engineering Zigong, Sichuan 643000, China

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).