Comparative study of CWO and ZnSe(Te) scintillation detector on the performance of X-ray imaging system

Recently, much attention has been paid to ZnSe(Te) semiconductor scintillator because of its excellent scintillation characteristics. Linear-array detector modules based on the conventional CdWO4 (CWO) and new ZnSe(Te) scintillator blocks were fabricated and tested for comparison for the purpose of...

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Bibliographic Details
Published in:Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2005-01, Vol.537 (1-2), p.449-453
Main Authors: Kwak, Sung-Woo, Cho, Gyuseong, Kim, Bong-Hwan, Kim, Insu, Sung Jae, Moo
Format: Article
Language:English
Subjects:
CdWO4
DQE
Scintillation detector
X-ray imaging
ZnSe(Te)
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Summary:Recently, much attention has been paid to ZnSe(Te) semiconductor scintillator because of its excellent scintillation characteristics. Linear-array detector modules based on the conventional CdWO4 (CWO) and new ZnSe(Te) scintillator blocks were fabricated and tested for comparison for the purpose of applying them in X-ray inspection system. From the point of view of photocurrent and of detective quantum efficiency (DQE), ZnSe(Te) showed better performance in the low-energy X-ray system and was competitive to CWO in the high-energy X-ray system when the depth of scintillator is optimized to the energy in use. The site test of these modules in a prototype container inspection system using 340kVp X-ray showed equivalent image qualities.
ISSN:0168-9002
1872-9576
DOI:10.1016/j.nima.2004.08.062