引力参考传感器检测质量块电荷积累与控制  

Gravity Reference Sensor Test Mass Charge Accumulation and Control

作　　者：康伟东 李得天[1] 雷军刚[1] 席东学 KANGWeidong;LI Detian;LEI Jungang;XI Dongxue(Science and Technology on Vacuum Technology and Physics Laboratory,Lanzhou Institute of Physics,Lanzhou 730000,China)

机构地区：[1]兰州空间技术物理研究所真空技术与物理重点实验室,兰州730000

出　　处：《真空与低温》2020年第2期158-164,共7页Vacuum and Cryogenics

摘　　要：引力参考传感器(又称惯性传感器)是空间引力波探测等任务中的关键载荷,其中检测质量块经历各种宇宙环境之后,由于部分高能粒子的作用,检测质量块上会逐渐积累电荷,这些累积的电荷随时间增长到一定的程度时,引起的噪声会影响航天器无拖曳控制和相关任务科学目标的实现。本文分析了检测质量块的电荷积累机制,介绍了几种利用光电效应对检测质量块进行电荷控制的结构,并设计了利用250 nm紫外光对检测质量块电荷进行控制的实验,最后对检测质量块电荷控制方法进行了总结。The gravitational reference sensor(also known as the inertial sensor)is a key load in the task of space gravitational wave detection.After the test mass is experienced in various cosmic environments,due to the action of some high-energy particles,the charge will gradually accumulate in the test mass.When the accumulation of charge growth over time to a certain extent,the resulting noise will affects drag-free control of the spacecraft and the achievement of related mission scientific objectives.The charge accumulation mechanism of test mass is analyzed.Several structures of charge control for test mass by photoelectric effect are introduced.The experiments are designed to explore the charge control of test mass by 250 nm ultraviolet light.Finally,the control methods of test mass charge are summarized.

关 键 词：空间引力波 检测质量块 电荷积累 电荷控制 

分 类 号：V443[航空宇航科学与技术—飞行器设计] TP212.43[自动化与计算机技术—检测技术与自动化装置]