反应堆中子通量测量用裂变电离室探测装置研制

Abstract

Abstract: In order to establish a monitoring device for reactor neutron flux measurement to meet the measurement requirements of ex-core nuclear measurement system, a fission ionization chamber detector with long sensitive region, wide range, high sensitivity and strong γ-suppression ability has been developed. At the same time, the thermal neutron sensitivity, high voltage plateau characteristic, screening threshold plateau characteristic and γ sensitivity of the fission ionization chamber detector are tested and verified. The test results show that the comprehensive performance of the fission ionization chamber can meet the application requirements of the intermediate range measurement channel for ex-core nuclear measurement system of the AP1000 series nuclear power plant.

Key words: neutron flux measurement, nuclear instrumentation system, fission ionization chamber, high-voltage saturation characteristics, thermal neutron sensitivity

CLC Number:

TL81

QIU Shunli, XIAO Wei, DONG Jincheng, GE Mengtuan, ZHAI Chunrong, TANG Zhongming, ZHOU Yulin, ZENG Le, LIU Haifeng, SUN Guangzhi, CHENG Hui, SHI Xianwu, LIU Wenzhen. Development of fission ionization chamber detector for reactor neutron flux measurement[J].RADIATION PROTECTION, 2024, 44(2): 134-140.

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Development of fission ionization chamber detector for reactor neutron flux measurement

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