核测量用裂变电离室宽量程中子注量率测量性能验证

辐射防护 ›› 2024, Vol. 44 ›› Issue (4): 343-348.

核测量用裂变电离室宽量程中子注量率测量性能验证

王春池¹, 肖伟², 刘佳奇¹, 石云皓¹, 胡婵², 邱顺利², 葛孟团², 周宇琳², 董进诚²

1.国核示范电站有限责任公司,山东荣成 264300;
2.武汉第二船舶设计研究所,武汉 430064

收稿日期:2023-12-05 出版日期:2024-07-20 发布日期:2024-08-05
通讯作者: 胡婵。E-mail:m13476110165@163.com
作者简介:王春池(1974—),男,1998年毕业于重庆大学工业自动化专业,高级工程师。E-mail:wangchunchi@spic.com.cn
基金资助:
国家科技重大专项(ZX06002012);湖北省自然科学基金(2023AFB425)。

Performance verification of wide range neutron fluence rate measurement by fission ionization chambers for nuclear measurement

WANG Chunchi¹, XIAO Wei², LIU Jiaqi¹, SHI Yunhao¹, HU Chan², QIU Shunli², GE Mengtuan², ZHOU Yulin², DONG Jincheng²

1. State Nuclear Power Demonstration Plant Co. Ltd., Shandong Rongcheng 264300;
2. Wuhan Secondary Institute of Ships, Wuhan 430064

Received:2023-12-05 Online:2024-07-20 Published:2024-08-05

摘要/Abstract

摘要： 分析了堆外核测量系统中间量程裂变电离室工作原理及宽量程测量的多种工作模式,根据其多工作模式特点研究宽量程中子注量率测量技术,探讨了上堆试验方法。对裂变室脉冲模式和均方压模式情况在反应堆进行性能验证,验证结果表明,该探测器具有超宽的量程范围,探测器输出与中子注量率在脉冲计数模式线性度最大值为1.16%,均方压工作模式线性度最大值为2.06%,中子通量测量上限可达到10¹⁰ cm^-2·s^-1量级,符合AP系列堆外核测量系统中间量程通道的宽量程使用要求,可广泛应用于核电及船用堆外核测量监测系统。

关键词: 堆外核测量, 中间量程, 裂变电离室, 超宽量程, 堆上试验

Abstract: This article analyzes the working principle of the fission ionization chamber and various working modes of wide range measurement. Based on its characteristics of multiple working modes, the measurement technology of wide range neutron fluence rate is studied, and the test method in reactor is discussed. Performance verification was conducted on the fission chamber pulse mode and mean square pressure mode in the reactor. The test results showed that the detector has an ultra wide range, and the maximum linearity between the detector output and neutron fluence rate in pulse counting mode is 1.16%. The maximum linearity in mean square pressure working mode is 2.06%, and the upper limit of neutron flux measurement can reach the level of 10¹⁰ cm^-2·s^-1, which complies with the wide range usage requirements of the intermediate range channel of the AP series external nuclear measurement system, and can be widely used in nuclear power and marine external nuclear measurement and monitoring systems.

Key words: ex-core nuclear instrumentation system, intermediate range, fission lionization chamber, ultra wide rang, test at reactor

中图分类号:

TL81

王春池, 肖伟, 刘佳奇, 石云皓, 胡婵, 邱顺利, 葛孟团, 周宇琳, 董进诚. 核测量用裂变电离室宽量程中子注量率测量性能验证[J]. 辐射防护, 2024, 44(4): 343-348.

WANG Chunchi, XIAO Wei, LIU Jiaqi, SHI Yunhao, HU Chan, QIU Shunli, GE Mengtuan, ZHOU Yulin, DONG Jincheng. Performance verification of wide range neutron fluence rate measurement by fission ionization chambers for nuclear measurement[J]. RADIATION PROTECTION, 2024, 44(4): 343-348.

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