Charge sharing effect on 600 μm pitch pixelated CZT detector for imaging applications
- Received Date: 2013-12-25
- Accepted Date: 1900-01-01
- Available Online: 2014-11-05
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.