摘要
设计了一个8通道的脉冲波形分析器。此系统以双现场可编程门阵列(Field Programmable Gate Array,FPGA)为核心,板载大容量同步双端口随机存取存储器(Random-Access Memory,RAM),并行8通道96 MHz高速采样模数转换器(Analog-to-Digital Converter,ADC),能够同时对8路脉冲波形进行采样分析,得到脉冲时间间隔谱、脉冲幅度谱和脉冲宽度谱。该设备ADC以10.4 ns的采样间隔采集脉冲数据,通过通用串行总线(Universal Serial Bus,USB)2.0与电脑实现数据上传,并借助上位机进行数据的实时显示。该设备已成功运用于硬X射线调制望远镜(Hard X-ray Modulation Telescope,HXMT)卫星高能主探测器的电性测试,并能够广泛适用于核辐射研究领域。
Background： The hard X-ray modulation telescope（HXMT） is devoted to performing an X-ray all-sky imaging survey, and carrying out pointed observations of the celestial bodies such as black-hole with high sensitivity. The 18 high energy X-ray detectors（HEDs） are the main payload on the HXMT. Purpose： This study aims to design a new type of multi-channel pulse wave analyzer for hard X-ray for the HEDs. Methods： Based on field programmable gate array（FPGA） technology, the pulse wave analyzer is structured with two FPGAs, eight high speed acquisition analog-to-digital converters（ADCs）（with 96-MHz clock driver）, 32 K×16 dual port random-access memory（RAM） and one universal serial bus（USB） 2.0. It can deal with 8-channel input pulses in parallel to obtain pulse height, width and reaching time from each channel. All those data can be displayed in real time on computer. Results： It is confirmed experimentally that the pulse wave analyzer performance is comparable with the MCA8000 D in energy spectral acquisition. Conclusion： This pulse wave analyzer has been successfully used in the HEDs performance testing, and can be used widely in the radiation detection.
作者
李继承
刘聪展
张翼飞
赵建领
阎博
LI Jicheng LIU Congzhan ZHANG Yifei ZHAO Jianling YAN Bo(Yunnan University, Kunming 620215, China Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China University of Chinese Academy of Sciences, Beijing 100049, China)
出处
《核技术》
CAS
CSCD
北大核心
2017年第9期35-40,共6页
Nuclear Techniques
基金
国家自然科学基金(No.111167302428)资助~~
