| Autor: |
Chunhui Zhang, Leifeng Cao, Yanmeng Dai, Dikai Li, Jian Yu, Miaomiao Yan, Jialing Deng, Xue Wang, Cangtao Zhou, Shuangchen Ruan |
| Rok vydání: |
2021 |
| Předmět: |
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| Zdroj: |
Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine. 189 |
| ISSN: |
1872-9800 |
| Popis: |
Aiming to improve the spatial resolution of a neutron imaging system (NIS) for 14 MeV fusion neutrons, an ideal micron resolution capillary detector filled with a high optical index liquid scintillator was simulated. A threshold for each capillary pixel and a threshold for each cluster were applied to suppress the gamma-induced background. In addition, by using a pattern recognition algorithm and an optimized Hough transform, the accuracy of determining the neutron impinging positions and the dynamic range of this detector were enhanced. For an ideal capillary array detector, the spatial resolution is expected as one capillary size of 20μm. The dynamic range of ∼1000 is reachable while the accuracy of neutron impinging position determination keeps better than 85%. The ionization quenching, light sharing and energy resolution of the detector were applied to the simulated data to understand the capillary array detector. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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