TMGe探测器在高能脉冲x射线断层成像中的应用

10th International Conference on Conduction and Breakdown in Dielectric Liquids Pub Date : 1990-09-10 DOI:10.1109/ICDL.1990.202878

P. Mathy, J. Girard, G. Thomas

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引用次数: 1

摘要

设计了一种用于高能断层扫描的TMGe探测器，成功地在由8mev直线加速器产生的100 hz脉冲x射线束上进行了测试。测量了50年的动态范围，对应于25厘米的铅衰减，最大剂量率为0.43拉德/秒。电子脉冲电流和离子脉冲间电流之间的比率主要取决于占空比，通过在脉冲期间和之前进行电子积分来改善。TMGe已被证明是扇形波束断层成像的一种有趣的检测介质，在这种情况下，需要大量非常均匀、高动态范围的单元。

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Application of a TMGe detector to high energy pulsed X-ray tomography

A TMGe detector designed for high-energy tomography has been successfully tested on a 100-Hz pulsed X-ray beam produced by a 8-MeV linear accelerator. A dynamic range of five decades has been measured, corresponding to 25-cm lead attenuation, with a maximum dose rate of 0.43 rad/s. The ratio between the electronic pulse current and the ionic interpulse current, mostly dependent on the duty cycle, was improved by means of electronics integrating during the pulse and just before. TMGe has been demonstrated to be an interesting detecting medium for fan-beam tomography, where a large number of very homogeneous, high-dynamic-range cells is required.<>

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10th International Conference on Conduction and Breakdown in Dielectric Liquids

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