基于FPGA的数字化核脉冲幅度分析器  

Digital multi-channel nuclear pulse height analyzer on FPGA

作　　者：肖无云[1] 梁卫平[1] 邵建辉[1] 王善强[1] 艾宪芸[1] 史志兰[1] 

机构地区：[1]防化研究院第二研究所,北京102205

出　　处：《核电子学与探测技术》2008年第6期1069-1071,共3页Nuclear Electronics & Detection Technology

基　　金：国家自然科学基金资助项目(10675073)

摘　　要：为了研制数字化γ能谱仪,采用现场可编程逻辑器件(FPGA)和硬件描述语言(HDL),完成了关键的数字多道脉冲幅度分析器(DMCA)的设计。利用ModelSim软件对该设计进行了功能仿真和优化。在此基础上通过电路设计建立了数字化能谱测量实验装置,实测了^(137)Csγ能谱,测量结果与相同条件下InSpector2000谱仪的实测谱完全吻合。由此证明该基于FPGA的DMCA设计正确可行,具有实用性。In order to develop a digital gamma spectrometer, an FPGA based digital multi-channel pulse height analyzer was designed with hardware description language. Functional simulation of the design was run with ModelSim software to make it optimized. Real circuits were developed and the digital energy spectrometry set was built. The gamma energy spectrum of ^137Cs was measured with the spectrometry set, which matched well with that from the InSpector2000 spectrometer with the other measuring conditions same. So it is proved that the design of the digital MCA based on FPGA is correct and can be used in practical instruments.

关 键 词：数字多道脉冲幅度分析器 现场可编程门阵列 能谱测量 

分 类 号：TL822.4[核科学技术—核技术及应用]