Charge sharing effect on 600 μm pitch pixelated CZT detector for imaging applications |
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引用本文: | 尹永智,刘奇,徐大鹏,陈熙萌.Charge sharing effect on 600 μm pitch pixelated CZT detector for imaging applications[J].中国物理 C,2014,38(11). |
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作者姓名: | 尹永智 刘奇 徐大鹏 陈熙萌 |
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作者单位: | School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China |
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基金项目: | Supported by NSFC(11305083);Fundamental Research Funds for the Central Universities(lzujbky-2013-5) |
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摘 要: | We are currently investigating the spatial resolution of highly pixelated Cadmium Zinc Telluride(CZT)detector for imaging application. A 20 mm×20 mm×5 mm CZT substrate was fabricated with 600 μm pitch pixels(500 μm anode pixels with 100 μm gap) and coplanar cathode. Charge sharing between two pixels was studied using collimated a 122 keV gamma ray source. Experiments show a resolution of 125 μm FWHM for double-pixel charge sharing events when the 600 μm pixelated and 5 mm thick CZT detector biased at-1000V. In addition, we analyzed the energy response of the 600 μm pitch pixelated CZT detector.
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关 键 词: | CZT detector charge sharing energy resolution |
收稿时间: | 2013-12-25 |
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