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Development of CdTe pixel detectors for Compton cameras

Author:
Shin Watanabe   Takaaki Tanaka   Kousuke Oonuki   Takefumi Mitani   Shin’ichiro Takeda   Tetsuichi Kishishita   Kazuhiro Nakazawa   Tadayuki Takahashi   Yoshikatsu Kuroda   Mitsunobu Onishi  


Journal:
Nuclear Instruments & Methods in Physics Research, Section A (Accelerators, Spectrometers, Detectors and Associated Equipment)


Issue Date:
2006


Abstract(summary):

We report our development of CdTe pixel detectors for Si/CdTe semiconductor Compton cameras. We have constructed a prototype of a Si/CdTe Compton camera, consisting of six layered double-sided silicon strip detectors and three CdTe pixel detectors. By using this prototype, we have demonstrated the concept of the Si/CdTe Compton cameras. We have successfully obtained Compton reconstructed images for 80-662keV gamma-rays. The achieved angular resolution is about 4degrees for 511keV gamma-rays. The energy resolution is 14keV (FWHM) at 511keV. In order to improve the performance of the Compton camera, we have evaluated all CdTe pixel detectors we have constructed. We found that the I-V curve is helpful to select good detectors. [All rights reserved Elsevier]


Page:
150-153


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