Readout electronics of a prototype spectrometer for measuring low-energy ions in solar wind plasma

作     者：Di Yang Zhe Cao Xi Qin Xin-Jun Hao Shu-Bin Liu Chang-Qing Feng Qi An 

作者机构：State Key Laboratory of Particle Detection and Electronics(IHEP-USTC)Hefei 230026China Department of Modern PhysicsUniversity of Science and Technology of ChinaHefei 230026China Division of Space PhysicsUniversity of Science andTechnology of ChinaHefei 230026China CAS Key Laboratory of Geospace EnvironmentHefei 230026China 

出 版 物：《Nuclear Science and Techniques》 (核技术（英文）)

年 卷 期：2016年第27卷第6期

页      面：130-136页

核心收录：

学科分类：07[理学] 08[工学] 0807[工学-动力工程及工程热物理] 0827[工学-核科学与技术] 070204[理学-等离子体物理] 0703[理学-化学] 0803[工学-光学工程] 0702[理学-物理学] 0801[工学-力学（可授工学、理学学位）] 

基　　金：supported by the National Key Scientific Instrument and Equipment Development Projects of the National Natural Science Foundation of China(No.41327802) the Fundamental Research Funds for the Central Universities(WK2030040066) 

主　　题：低能离子 等离子体 原位测量 电子学 光谱仪 太阳风 读出 原型 

摘      要：Readout electronics is developed for a prototype spectrometer for in situ measurement of low-energy ions of30 e V/e–20 ke V/e in the solar wind plasma.A low-noise preamplifier/discriminator(A111F) is employed for each channel to process the signal from micro-channel plate(MCP) detectors.A high-voltage(HV) supply solution based on a HV module and a HV optocoupler is adopted to generate a fast sweeping HV and a fixed *** to limitation of telemetry bandwidth in space communication,an algorithm is implemented in an FPGA(field programmable gate array) to compress the raw *** results show that the electronics achieves a 1 MHz event rate and a large input dynamic range of 95 p C.A slew rate of 0.8 V/ls and an integral nonlinearity of 0.7-LSB for the sweeping HV,and a precision of less than 0.8 % for the fixed HV are obtained.A vacuum beam test shows an energy resolution of 12 ± 0.7 % full width at half maximum(FWHM) is achieved,and noise counts are less than10/sec,indicating that the performance meets the physical requirement.