Charge sharing effect on 600 μm pitch pixelated CZT detector for imaging applications

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YIN Yong-Zhi, LIU Qi, XU Da-Peng and CHEN Xi-Meng. Charge sharing effect on 600 μm pitch pixelated CZT detector for imaging applications[J]. Chinese Physics C, 2014, 38(11): 116002. doi: 10.1088/1674-1137/38/11/116002
YIN Yong-Zhi, LIU Qi, XU Da-Peng and CHEN Xi-Meng. Charge sharing effect on 600 μm pitch pixelated CZT detector for imaging applications[J]. Chinese Physics C, 2014, 38(11): 116002.  doi: 10.1088/1674-1137/38/11/116002 shu
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Received: 2013-12-25
Revised: 1900-01-01
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Charge sharing effect on 600 μm pitch pixelated CZT detector for imaging applications

    Corresponding author: CHEN Xi-Meng,

Abstract: 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 -1000 V. In addition, we analyzed the energy response of the 600um pitch pixelated CZT detector.

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