中文摘要：

基于 CsI（Tl）探测器的α／γ波形甄别能力，采用上升时间法，设计了一种波形实时甄别系统，系统由高速 ADC 和高性能 FPGA 组成。介绍了实时甄别系统的方案设计和甄别算法设计，利用60 Co γ源、241 Am α源对实时系统进行了甄别测试。研究表明：设计的数字化实时波形甄别系统体积小，能实时甄别开α、γ粒子，甄别品质因子为0.6875，事件计数率可达2.5×10^5 s －1。

英文摘要：

A real‐time α/γ pulse shape discriminator based on CsI （Tl） scintillator was developed .The rise‐time method was adopted as the inserted algorithm .The real‐time discriminator consists of a high‐speed ADC and a high‐property PFGA .In this paper , the design scheme and the discrimination algorithm of the system were introduced .The real‐time system was tested with a 60 Co γ source and a 241 Am α source .The results show that the size of the designed real‐time system is small .The discrimination figure of merit is 0.687 5 .The system can discriminate α and γ events in real time and its throughput of events is up to 2.5 ×10^5 s - 1 .