引力参考传感器检测质量块电荷UV光调控技术研究  

Research on UV Light Control Technology for Detecting Mass Charge with Gravitational Reference Sensor

作　　者：康伟东 李得天[1] 李刚[1] 韩晓东 KANG Weidong;LI Detian;LI Gang;HAN Xiaodong(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》2021年第4期407-410,共4页Vacuum and Cryogenics

摘　　要：引力参考传感器是空间引力波探测等任务中的关键载荷,引力参考传感器内的检测质量块经历各种宇宙环境作用后的电荷积累与周围的电场、磁场耦合,产生的干扰会影响对科学目标的探测。本文研究用255 nm紫外(UV)LED控制检测质量块的电荷,控制其放电速率在0~10 pA。研究了直流电荷控制实验中光强、入射角、压力以及偏压对光电效应的影响。在交流电荷控制实验中,通过调节光源驱动和偏置电压的相位差将检测质量块的放电速率控制在-3~+3 pA之间。The gravitational reference sensor is a key load in the space gravitational wave detection and other missions.The charge accumulation in the test mass is coupled with the surrounding electric field and magnetic field in several of cosmic environments.The interference generated will affect scientific objectives.This paper studies the charge control of the 255 nm ultraviolet(UV)LED on the test mass,and controls the discharge rate of the test mass between 0~10 pA.The DC charge control experiment studies the effect of light intensity,incident angle,pressure,and bias on the photoelectric response.The AC charge control experiment controls the discharge rate of the test mass by adjusting the phase of the light source drive and bias voltage,and controls the discharge rate between-3~+3 pA.

关 键 词：引力参考传感器 检测质量块 电荷控制 

分 类 号：V448[航空宇航科学与技术—飞行器设计]