A survey of space radiation damage to DAMPE-PSD
A survey of space radiation damage to DAMPE-PSD
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DAMPE-PSD 空间辐射损伤调查
DOI：
10.1016/j.nima.2020.164112
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发表时间：
2020-05
期刊：
影响因子：
--
通讯作者：
Hu Bitao
中科院分区：
文献类型：
--
作者：
Zhang Yongjie;Sun Zhiyu;Yu Yuhong;Guo Jianhua;Fang Fang;Zhou Yong;Wang Zhaoming;Zhang Yapeng;Hu Bitao
作为一种新型宇宙射线天文望远镜，DAMPE自2015年底发射以来，已经在轨运行了四年多。它可以测量5GeV到10TeV的电子和伽马射线，以探索全新的天体物理现象。作为一台甚高能望远镜，其工作寿命对积累高质量的天体粒子信号统计量具有重要意义。总吸收剂量引起的探测器老化是影响DAMPE工作寿命的主要因素之一。由于塑料闪烁体探测器（PSD）需要面对更恶劣的辐射环境，本文详细研究了空间辐照对PSD闪烁体条和光电倍增管（PMT）的损伤。结果表明，在DAMPE卫星运行期间，辐射对PSD条的损伤可以忽略不计，当光电倍增管增益在轨退化20%时，PSD中光电倍增管的最小工作寿命为8.32年。
As a new astronomical telescope for cosmic rays, DArk Matter Particles Explorer (DAMPE) have been operated in-orbit for more than four years since it was launched at the end of 2015. It could measure electron and gamma-ray ranging from 5 GeV to 10 TeV to explore the brand new astrophysical phenomenon. As a very high energy telescope, the working lifetime is significant to accumulate high statistics for astroparticle signals. The aging of detectors due to the Total Absorbed Dose (TAD) is one of the main factors affecting the working lifetime of DAMPE. Due to the Plastic Scintillator Detector (PSD) should face a worse radiation environment, in this paper, the space TAD damage to the scintillator strips and the PhotoMultiplier Tubes (PMTs) of the PSD are investigated in detail. The results show that the radiation damage to the PSD strips can be ignored during DAMPE satellite operation time, and the minimum working lifetime of the PMTs in the PSD is 8.32 years as the gain of the PMTs are degraded by 20% in orbit.
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DOI：
10.22323/1.236.0265
发表时间：
2016-08
期刊：
--
影响因子：
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DOI：
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发表时间：
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影响因子：
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DOI：
10.1016/j.nima.2018.12.036
发表时间：
2019-04
期刊：
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
影响因子：
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作者：
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影响因子：
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