A RADIATION DETECTION SYSTEM FOR HIGH-ENERGY COMPUTERIZED-TOMOGRAPHY USING CDZNTE DETECTORS

被引:7
作者
BALDAZZI, G
ROSSI, M
QUERZOLA, E
GUIDI, G
CHIRCO, P
SCANNAVINI, MG
ZANARINI, M
CASALI, F
机构
[1] UNIV BOLOGNA,DEPT PHYS,I-40126 BOLOGNA,ITALY
[2] IST NAZL FIS NUCL,I-40126 BOLOGNA,ITALY
关键词
D O I
10.1109/23.467911
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
This work presents a particular application in which cadmium-zinc telluride (CdZnTe) detectors are used in photoconductive mode in a high-energy computerized tomography system for industrial applications. A first-generation tomography facility has been set up at the University of Bologna, based on a 12-MeV pulsed linear accelerator X-ray source and a single 10x10x2 mm(3) CdZnTe detector. The obtained results show that CdZnTe detectors exhibit better timing performances than CdTe detectors, and are thus more suitable for tomographic applications. Special-purpose signal conditioning electronics have been developed in order to compensate slow and fast signal fluctuations induced by temperature variations and Linac instabilities. In such a way, the dynamic range of the detector has been improved up to more than 3 orders of magnitude. A set of images was acquired in order to evaluate the overall performances of the tomographic facility.
引用
收藏
页码:575 / 579
页数:5
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