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Proceedings Paper

Development of energy-discriminate CdTe imaging detector for hard x-ray
Author(s): Toru Aoki; Yu Ishida; Daisuke Sakashita; Volodymyr A. Gnatyuk; Atsushi Nakamura; Yasuhiro Tomita; Yoshinori Hatanaka; Jiro Temmyo
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Paper Abstract

Energy discriminate type CdTe imaging detector was developed for hard X-ray imaging. The device has 4 x 128 structured 512 semi-linear M-π-n CdTe pixels with 0.5 mm pixel pitch and 256 mm length. Each pixel was 2mm x 0.8 mm size and connected to photon-counting type data processing circuit integrated as 64ch ASIC. The ASIC could be operated at high speed over 1M cps and it has 5 levels of energy discriminated thresholds and 15bit counter with each thresholds levels. The imaging detector was designed for energy discriminated hard X-ray imaging using X-ray tube source, since its high incident rate correspondence by high speed operating. The detector was consisted by 512-CdTe detector chips, 8-ASICs with control digital circuits, system control MPU, interface device and high-voltage source in the detector unit, and connected to conventional laptop personal computer thorough USB2.0 interface. In this study, we build energy-discriminated X-ray penetrating imaging system with this CdTe 512 pixels imaging detector unit, 90keV micro-focus X-ray source, mechanical scanning system and imaging software. The energy discriminate X-ray penetrating imaging was carried out by this system.

Paper Details

Date Published: 21 October 2004
PDF: 10 pages
Proc. SPIE 5540, Hard X-Ray and Gamma-Ray Detector Physics VI, (21 October 2004); doi: 10.1117/12.559479
Show Author Affiliations
Toru Aoki, Shizuoka Univ. (Japan)
Yu Ishida, Shizuoka Univ. (Japan)
Daisuke Sakashita, Shizuoka Univ. (Japan)
Volodymyr A. Gnatyuk, Shizuoka Univ. (Japan)
Institute of Semiconductor Physics (Ukraine)
Atsushi Nakamura, Shizuoka Univ. (Japan)
Yasuhiro Tomita, Hamamatsu Photonics K.K. (Japan)
Yoshinori Hatanaka, Aichi Univ. of Technology (Japan)
Jiro Temmyo, Shizuoka Univ. (Japan)

Published in SPIE Proceedings Vol. 5540:
Hard X-Ray and Gamma-Ray Detector Physics VI
Arnold Burger; Ralph B. James; Larry A. Franks, Editor(s)

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