面向PGNAA应用的高计数率数据采集系统
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- 英文论文题名：A High Counting-rate Data Acquisition System for the Applications of PGNAA
- 论文作者：刘宇哲 ; 陈炼 ; 梁福田 ; 李锋 ; 金革
- 英文论文作者：LIU Yuzhe ; CHEN Lian ; LIANG Futian ; LI Feng ; JIN Ge ; State Key Laboratory of Particle Detection and Electronics ; Department of Modern Physics ; University of Science and Technology of China
- 年：2014
- 作者机构：核探测与核电子学国家重点实验室;中国科学技术大学近代物理系;
- 论文关键词：检测技术 ; 瞬发γ射线 ; 电子学系统
- 英文论文关键词：Detection Technology ; Prompt γ-rays ; Electronic System
- 会议召开时间：2014-08-13
- 会议录名称：第十七届全国核电子学与核探测技术学术年会论文集
- 语种：中文
- 分类号：TL81;TP274.2
- 学会代码：HDZX
- 会议名称：第十七届全国核电子学与核探测技术学术年会
- 会议地点：中国甘肃兰州
- 主办单位：中国电子学会、中国核学会核电子学与核探测技术分会
- 学会名称：中国电子学会核电子学与核探测技术分会
- 页数：5
- 文件大小：517k
- 原文格式：D
- 会议级别：全国
摘要
瞬发γ射线中子活化分析(简称PGNAA)技术利用中子和γ射线穿透能力极强的特点,可以实现对较大厚度物体的内部的全元素信息进行探测,是一种被广泛应用到工业物料成分分析中的检测技术。本文提出的高通过率、高信噪比电子学系统,利用先进的电子学技术,可以实现在PGNAA应用中,对移动中的工业物的料成分及含量进行实时、准确和快速的监测分析,达到单次测量的时间为120s,脉冲信号的平均计数率达到500kc/s的设计目标。
The prompt γ-ray neutron activation analysis(referred PGNAA) technology is a use of the strong penetrating power of neutron and γ-ray, which can get the whole information of the elements inside a thick material. Therefore, the PGNAA technology has become the best choice to meet the needs of detecting the composition of industrial materials. This paper presents a data acquisition scheme for the physical targets of PGNAA, which has a high pass rate, high SNR and can analyze and process a large number of pulses which the detector outputs. This system is designed to rapidly analyze the composition and content of the industrial materials in real-time. Since we have to dynamically analyze the moving materials, the expected time for a measurement cannot exceed 120 s, The average counting rate is expected to reach more than 500kc/s.
The prompt γ-ray neutron activation analysis(referred PGNAA) technology is a use of the strong penetrating power of neutron and γ-ray, which can get the whole information of the elements inside a thick material. Therefore, the PGNAA technology has become the best choice to meet the needs of detecting the composition of industrial materials. This paper presents a data acquisition scheme for the physical targets of PGNAA, which has a high pass rate, high SNR and can analyze and process a large number of pulses which the detector outputs. This system is designed to rapidly analyze the composition and content of the industrial materials in real-time. Since we have to dynamically analyze the moving materials, the expected time for a measurement cannot exceed 120 s, The average counting rate is expected to reach more than 500kc/s.
引文
[1]虞孝麒.核电子学方法[J].1999.
[2]孟伯年.用于瞬发γ中子活化在线元素分析的高计数率γ谱仪[J].核电子学与探测技术,1995,15(1):1-12
[3]Sang Z,Li F,Yao Y,et al.A Non-linearity Correction Method for Fast Digital Multi-Channel Analyzers[J].Physics Procedia,2012,37:1594-1599.
[2]孟伯年.用于瞬发γ中子活化在线元素分析的高计数率γ谱仪[J].核电子学与探测技术,1995,15(1):1-12
[3]Sang Z,Li F,Yao Y,et al.A Non-linearity Correction Method for Fast Digital Multi-Channel Analyzers[J].Physics Procedia,2012,37:1594-1599.