原子能科学技术
原子能科學技術
원자능과학기술
ATOMIC ENERGY SCIENCE AND TECHNOLOGY
2015年
9期
1685-1689
,共5页
李奎念%李阳%张美%李斌康
李奎唸%李暘%張美%李斌康
리규념%리양%장미%리빈강
数字化波形甄别%实时甄别%上升时间法%CsI(Tl)闪烁探测器%FPGA
數字化波形甄彆%實時甄彆%上升時間法%CsI(Tl)閃爍探測器%FPGA
수자화파형견별%실시견별%상승시간법%CsI(Tl)섬삭탐측기%FPGA
digital pulse shape discrimination%real-time discrimination%rise-time meth-od%CsI(Tl) scintillation detector%FPGA
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2.5×105 s －1。
基于 CsI（Tl）探測器的α／γ波形甄彆能力，採用上升時間法，設計瞭一種波形實時甄彆繫統，繫統由高速 ADC 和高性能 FPGA 組成。介紹瞭實時甄彆繫統的方案設計和甄彆算法設計，利用60 Co γ源、241 Am α源對實時繫統進行瞭甄彆測試。研究錶明：設計的數字化實時波形甄彆繫統體積小，能實時甄彆開α、γ粒子，甄彆品質因子為0.6875，事件計數率可達2.5×105 s －1。
기우 CsI（Tl）탐측기적α／γ파형견별능력，채용상승시간법，설계료일충파형실시견별계통，계통유고속 ADC 화고성능 FPGA 조성。개소료실시견별계통적방안설계화견별산법설계，이용60 Co γ원、241 Am α원대실시계통진행료견별측시。연구표명：설계적수자화실시파형견별계통체적소，능실시견별개α、γ입자，견별품질인자위0.6875，사건계수솔가체2.5×105 s －1。
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 × 105 s - 1 .
