PWR一回路水泄漏~(13)N能谱符合监测装置初步设计
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- 英文论文题名：Sampling container optimizing design of ~(13)N energy spectrum coincidence for PWR primary circuit water leakage
- 论文作者：屈国普 ; 赵越 ; 周剑良 ; 齐路兵
- 英文论文作者：Qu Guo-pu ; Zhao Yue ; Zhou Jian-ling ; Qi Lu-bing ; School of Nuclear Science and Technology ; University of South China
- 年：2014
- 作者机构：南华大学核科学技术学院;
- 论文关键词：γ-γ能谱符合 ; Geant4工具包 ; 符合探测效率 ; 计数率
- 英文论文关键词：γ-γ energy spectrum coincidence ; Geant4 toolkit ; coincidence detection efficiency ; count rate
- 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：TL375.5
- 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：6
- 文件大小：915k
- 原文格式：D
- 会议级别：全国
摘要
为了解决现有监测仪器的探测下限较高以及对能谱稳定要求较高的问题,提出了一种利用γ-γ能谱符合法来监测压水堆一回路压力边界水泄漏的方法。该研究以常规取样容器M-B为基础,对符合法测量取样容器进行了初步设计,并利用Geant4软件对β+粒子在取样容器中的行为和符合探测器的效率进行了模拟和计算。计算结果表明,相同取样体积下,方案一的符合效率和计数率均高于方案二,这给我们实际构建更优化的监测装置提供了理论依据。
To solve the higher detection limit of the existing instruments and the higher requirements of stability of energy spectrum, a use of the energy spectrum of the γ-γ coincidence method to monitor water leaks in PWR primary circuit pressure boundary is proposed.In this study, coincidence measurement sampling container were preliminary designed based on the conventional sampling container M-B, and the behavior of β + particles in the sample container and efficiency of the coincidence detector were simulated and calculated by using Geant4 software The calculated results reveal that, when the same sampling volume, the coincidence detection efficiency and counting rate of the coincidence detectors with program one are higher than program two, this provides a theoretical basis for us to construct more optimized monitoring device in practical work.
To solve the higher detection limit of the existing instruments and the higher requirements of stability of energy spectrum, a use of the energy spectrum of the γ-γ coincidence method to monitor water leaks in PWR primary circuit pressure boundary is proposed.In this study, coincidence measurement sampling container were preliminary designed based on the conventional sampling container M-B, and the behavior of β + particles in the sample container and efficiency of the coincidence detector were simulated and calculated by using Geant4 software The calculated results reveal that, when the same sampling volume, the coincidence detection efficiency and counting rate of the coincidence detectors with program one are higher than program two, this provides a theoretical basis for us to construct more optimized monitoring device in practical work.
引文
[1]张圈世、阎春光、贾怀茂,测量环境中痕量放射性氙的能谱符合法[J],原子能科学技术,2000,34(suppl):27-29
[2]刘跃龙,LaBr3探测器对取样容器中β+衰变源探测效率的研究[D],衡阳:南华大学,2011
[3]许淑艳,蒙特卡罗方法在实验核物理中的应用[M],北京:原子能出版社,1996
[4]白立新、张一云等,中子产额活化测量法中γ-γ符合探测效率的模拟计算[J],强激光与粒子束,2004.4,16(4):461-464
[2]刘跃龙,LaBr3探测器对取样容器中β+衰变源探测效率的研究[D],衡阳:南华大学,2011
[3]许淑艳,蒙特卡罗方法在实验核物理中的应用[M],北京:原子能出版社,1996
[4]白立新、张一云等,中子产额活化测量法中γ-γ符合探测效率的模拟计算[J],强激光与粒子束,2004.4,16(4):461-464