The development of a high granular crystal calorimeter prototype of VLAST
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arXiv
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| Format: | Preprint |
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2025
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| _version_ | 1866914267932917760 |
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| author | Zhang, Yanshuo Chen, Qian Chen, Dengyi Liu, Jianguo Hu, Yiming Zhang, Yunlong Wei, Yifeng Shen, Zhongtao Feng, Changqing Guo, Jianhua Liu, Shubin Huang, Guangshun Wang, Xiaolian Xu, Zizong |
| author_facet | Zhang, Yanshuo Chen, Qian Chen, Dengyi Liu, Jianguo Hu, Yiming Zhang, Yunlong Wei, Yifeng Shen, Zhongtao Feng, Changqing Guo, Jianhua Liu, Shubin Huang, Guangshun Wang, Xiaolian Xu, Zizong |
| contents | Very Large Area gamma-ray Space Telescope (VLAST) is the next-generation flagship space observatory for high-energy gamma-ray detection proposed by China. The observation energy range covers from MeV to TeV and beyond, with acceptance of 10 m^2sr. The calorimeter serves as a crucial subdetector of VLAST, responsible for high-precision energy measurement and electron/proton discrimination. This discrimination capability is essential for accurately identifying gamma-ray events among the background of charged particles. To accommodate such an extensive energy range, a high dynamic range readout scheme employing dual avalanche photodiodes (APDs) has been developed, achieving a remarkable dynamic range of 10^6. Furthermore, a high granular prototype based on bismuth germanate (BGO) cubic scintillation crystals has been developed. This high granularity enables detailed imaging of the particle showers, improving both energy resolution and particle identification. The prototype's performance is evaluated through cosmic ray testing, providing valuable data for optimizing the final calorimeter design for VLAST. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_24851 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | The development of a high granular crystal calorimeter prototype of VLAST Zhang, Yanshuo Chen, Qian Chen, Dengyi Liu, Jianguo Hu, Yiming Zhang, Yunlong Wei, Yifeng Shen, Zhongtao Feng, Changqing Guo, Jianhua Liu, Shubin Huang, Guangshun Wang, Xiaolian Xu, Zizong Instrumentation and Detectors Very Large Area gamma-ray Space Telescope (VLAST) is the next-generation flagship space observatory for high-energy gamma-ray detection proposed by China. The observation energy range covers from MeV to TeV and beyond, with acceptance of 10 m^2sr. The calorimeter serves as a crucial subdetector of VLAST, responsible for high-precision energy measurement and electron/proton discrimination. This discrimination capability is essential for accurately identifying gamma-ray events among the background of charged particles. To accommodate such an extensive energy range, a high dynamic range readout scheme employing dual avalanche photodiodes (APDs) has been developed, achieving a remarkable dynamic range of 10^6. Furthermore, a high granular prototype based on bismuth germanate (BGO) cubic scintillation crystals has been developed. This high granularity enables detailed imaging of the particle showers, improving both energy resolution and particle identification. The prototype's performance is evaluated through cosmic ray testing, providing valuable data for optimizing the final calorimeter design for VLAST. |
| title | The development of a high granular crystal calorimeter prototype of VLAST |
| topic | Instrumentation and Detectors |
| url | https://arxiv.org/abs/2509.24851 |