CAJ | 학술논문

为了测量反应堆内中子注量率分布，保证反应堆内活化55 M n-58 Ni合金探测片γ计数测量的可靠性，本文研制了中子注量率分布测量装置中9通道放大甄别器。多通道放大甄别器性能指标测试与应用测试结果表明：每个通道放大器增益1～21连续可调、甄别器阈值独立连续可调，具有最大计数率高、灵敏度高、稳定性好、系统抗串扰能力强等优点；放大器增益长期稳定性≤1％，甄别器最小输入脉冲宽度≥0.1μs ，甄别器最大计数率≤4×106 s-1，能用于实时长期稳定测量反应堆内中子注量率分布。
위료측량반응퇴내중자주량솔분포，보증반응퇴내활화55 M n-58 Ni합금탐측편γ계수측량적가고성，본문연제료중자주량솔분포측량장치중9통도방대견별기。다통도방대견별기성능지표측시여응용측시결과표명：매개통도방대기증익1～21련속가조、견별기역치독립련속가조，구유최대계수솔고、령민도고、은정성호、계통항천우능력강등우점；방대기증익장기은정성≤1％，견별기최소수입맥충관도≥0.1μs ，견별기최대계수솔≤4×106 s-1，능용우실시장기은정측량반응퇴내중자주량솔분포。
For the measurement of neutron fluence rate in reactor and reliable assurance of γcount measurement of activated 55 M n-58 Ni alloy irradiated foils in reactor ,9-channel amplifier-discriminator was developed . The main technical parameter test and application test show that the gain of each channel amplifier-discriminator is continuously adjustable from 1 to 21 , the threshold of each discriminator circuit is continuously adjustable ,the maximum count rate and sensitivity of discriminator circuit are high , and the system has stable property and excellent anti-interference . In conclusion ,relevant technical parameters can guarantee the real-time and long-term stable measurement of neutron fluence rate relative distribution in reactor , with the technical parameters that gain stability of amplifier is less than 1% ,the minimum input pulse width of discriminator circuit is greater than 0.1 μs ,and the maximum count rate of discriminator is less than 4 × 106 s-1 .