Preliminary results of a Compton camera based on a single 3D position-sensitive CZT detector
| Autor: | Lan Zhang, Yilin Liu, Xu-Ming Ma, Yuanjing Li, Jianqiang Fu, Yulan Li |
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| Rok vydání: | 2018 |
| Předmět: |
Physics
Nuclear and High Energy Physics Pixel 010308 nuclear & particles physics business.industry Detector 01 natural sciences 010309 optics Software Data acquisition Optics Nuclear Energy and Engineering Application-specific integrated circuit Position (vector) 0103 physical sciences Line (geometry) Angular resolution business |
| Zdroj: | Nuclear Science and Techniques. 29 |
| ISSN: | 2210-3147 1001-8042 |
| DOI: | 10.1007/s41365-018-0483-0 |
| Popis: | A Compton camera prototype has been developed using a pixelated CZT detector with 4-by-4 pixels. Signals of the detector are read out by a VASTAT ASIC that is controlled by a self-developed DAQ board. The DAQ software is developed using LabVIEW, and the offline Compton imaging codes are written in C++. The prototype has been successfully calibrated, and its capabilities for source detection, spectroscopy, and Compton imaging have been demonstrated using a Cs-137 source. The angular resolution of the 662 keV line is 36° FWHM for the simple back-projection method and 9.6° FWHM for the MLEM reconstruction method. The system is ready to be extended to 11-by-11 pixels in the future, and a better imaging quality can be expected due to the better relative position resolution. |
| Databáze: | OpenAIRE |
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