浅析单晶硅辐照中子注量在线测量信号刻度的影响因素

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英文篇名：Brief Analysis on the Influence Factors of Signal Calibration for On-line Measurement of Neutron Flux Irradiated on Single Crystalline Silicon 作者：王云波 ; 操节宝 ; 邹鹏 ; 徐涛忠 ; 王皓 英文作者：WANG Yun-bo;CAO Jie-bao;ZOU Peng;XU Tao-zhong;WANG Hao;Nuclear Power Institute of China; 关键词：单晶硅 ; 自给能中子探测器 ; 信号刻度 英文关键词：Single crystal silicon;;Self-powered neutron detector;;Signal calibration 中文刊名：KJSJ 英文刊名：Science & Technology Vision 机构：中国核动力研究设计院; 出版日期：2019-01-25 出版单位：科技视界 年：2019 期：No.261 语种：中文; 页：KJSJ201903079 页数：3 CN：03 ISSN：31-2065/N 分类号：152+197-198

摘要

使用自给能中子探测器在线监测单晶硅受照热中子注量时,需要对其测量信号(电流值)进行刻度。由于探测器无法布置在硅体上,导致其信号刻度的影响因素较多且复杂。为保证刻度的准确性,本文对影响自给能中子探测器和单晶硅位置的热中子注量率分布及中子能谱的因素进行了简要梳理和分析,并提出了一些刻度试验策略。
        When the self-powered neutron detector is used to on-line monitor the thermal neutron flux irradiated on single crystalline silicon, the measurement signal( current value) is needed to be calibrated. Since the detector cannot be installed on silicon ingot, the influence factors of signal calibration are numerous and complicated. In order to ensure the accuracy of calibration, the factors influenced on the distribution of thermal neutron flux and neutron spectrum were briefly organized and analyzed in this paper. In addition, some strategies of calibration test were given.

引文

[1] Neutron Transmutation Doping of Silicon at Research Reactors[M]. Vienna:International Atomic Energy Agency, 2012.
    [2] BS IEC 61468:2000. Nuclear Power Plants In-core Instrumentation Characteristics and Test Methods of Self-powered Neutron Detectors[S].