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. 2023 Apr:194:110711.
doi: 10.1016/j.apradiso.2023.110711. Epub 2023 Feb 2.

Design of a five-layers multi-energy X-ray imaging detector for material sorting

Ziqi Wu  1 , Wenbao Jia  1 , Yunlong Wu  1 , DaQian Hei  2 , Aiyun Sun  3 , Yongsheng Ling  1 , Qing Shan  1 , Chao Shi  1 , Jiandong Zhang  1
Affiliations

Design of a five-layers multi-energy X-ray imaging detector for material sorting

Ziqi Wu et al. Appl Radiat Isot. 2023 Apr.

Abstract

X-ray transmission imaging (XRT) is widely used for sorting materials. However, conventional single-energy and dual-energy X-ray systems have poor ability to discriminate between materials with similar atomic number (Z), and the count rate of available multi-energy XRT detectors could not support high-speed industrial applications. This paper presents the design of a detector that can potentiality achieve high-speed multi-energy X-ray imaging using Geant4 simulations. This detector consisted of five detection layers (with three scintillator materials: CsI, GOS and CdWO4), two metal filters, which allows X-ray imaging at five energies. Validation simulation showed that the 15% more accurate than a dual-layers detector in the classification of Mg and Al alloys.

Keywords: Material sorting; Multi-energy; Scintillator detector; X-ray imaging.

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Conflict of interest statement

Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

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