Currently industrial X-CT system is designed according to characteristics of test objects, and test objects determine industrial\nX-CT system structure, X-ray detector/sensor property, scanning mode, and so forth. So there are no uniform standards for the\ngeometry size of scintillation crystals of detector.Moreover, scintillation crystals are usually mixed with some highly toxic impurity\nelements, such as Tl and Cd.Thus, it is indispensable for establishing guidelines of engineering practice to simulate X-ray detection\nperformances of different scintillation crystals. This paper focuses on how to achieve high efficient X-ray detection in industrial XCT\nsystem which usedMonte Carlo (MC) method to study X-ray energy straggling characteristics, full energy peak efficiency, and\nconversion efficiency of some scintillation crystals (e.g., CsI(Tl),NaI(Tl), andCdWO4) afterX-ray interacted with these scintillation\ncrystals. Our experimental results demonstrate that CsI(Tl) scintillation crystal has the advantages of conversion efficiency, spectral\nmatching, manufacturing process, and full energy peak efficiency; it is an ideal choice for high efficient X-ray detection in industrial\nX-CT system.
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