| 空间电子辐射环境探测载荷测试定标试验平台研制 |
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| 引用本文： | 周平,王文静,荆涛,张爱兵,郭盘林,盛树刚,景毓辉,孙越强,梁金宝,朱光武,冀文涛,马利媛.空间电子辐射环境探测载荷测试定标试验平台研制[J].空间科学学报,2017,37(6):738-747. |
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| 作者姓名： | 周平 王文静 荆涛 张爱兵 郭盘林 盛树刚 景毓辉 孙越强 梁金宝 朱光武 冀文涛 马利媛 |
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| 作者单位： | 1. 中国科学院国家空间科学中心 北京 100190; |
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| 基金项目： | 中国科学院国家空间科学中心风云四号科研试验卫星研制保障条件建设项目资助 |
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| 摘 要： | 介绍了中国科学院国家空间科学中心新建成的空间电子辐射环境探测载荷测试定标试验平台.该平台由中、高能极弱流电子加速器以及内置多维真空转台的真空靶室试验终端组成，用于对星载空间电子辐射探测器进行地面加速器测试定标.重点描述了为得到中能极弱流均匀平行束，采用电子轨迹程序Egun对中能极弱流电子加速器进行的物理设计和模拟计算，给出球形结构电子枪在栅网孔不加栅网、加理想栅网和直径1mm孔栅网以及在不同加速管出口能量情况下，初聚系统和加速管以及经过二次扩束时输运段中电子轨迹的模拟结果.最终得出能够实现电子枪初始束流减弱8个数量级，获得满足测试定标试验需求的极弱流均匀平行电子束（在试验终端直径50mm靶上束流面密度为105~109cm-2·s-1）的结论.
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| 关 键 词： | 空间电子辐射环境 电子加速器 极弱流 |
| 收稿时间： | 2016-09-30 |
Development of the Testing and Calibration Platform for Space Electron Radiation Environment Research Payloads |
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| Affiliation: | 1. National Space Science Center, Chinese Academy of Sciences, Beijing 100190;2. Beijing Key Laboratory of Space Environment Exploration, Beijing 100190;3. University of Chinese Academy of Sciences, Beijing 100049;4. Shanghai Hangye Vacuum Instrument Science and Technology Co., Ltd. 201806;5. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049 |
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| Abstract: | In order to test and calibrate the satellite payloads-electron detectors, the medium-and high-energy electron accelerators with extremely weak beam current to simulate the electron radiation environment of space have been built, including the experimental terminal which have a vacuum chamber and a vacuum rotation plate. This work focuses on the physical design and simulation of extremely weak, uniform, parallel electron beam of the medium-energy one, by using electron trajectory program Egun. The simulation results of electron trajectory in the initial focusing system, the accelerating tube and the twice beam broaden on different conditions including without grid, with ideal grid and with 1mm diameter aperture grid in the spherical electron gun are presented. Finally, the beam density, 105~109cm-2·s-1 within the ø 50mm target area, can be weakened by 8 orders of magnitude from the electron gun to the target area, and could satisfy the requirement of electron detectors testing and calibration experiment. |
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