摘要
利用计算机仿真技术对裂变室宽量程电子学测量中测量频带和噪声的影响建模,并进行仿真分析。分析结果表明:裂变室的脉冲计数测量主要受测量频带的影响,在10 MHz频带内上限计数率大约为测量频带的1/10;裂变室的坎贝尔测量同时受测量频带和噪声的影响,测量频带在300 k Hz左右具有最佳的信噪比,通过降低噪声水平能有效降低下限计数率。
Using computer simulation technology, the impact of frequency band and noise in the fission chamber wide-range electronics is modeled and simulated. The analysis results show that the pulse counting mode is mainly influenced by the frequency band, and the upper limit of counting rate is about tenth of the frequency band under 10 MHz; the Campbell mode is influenced by the frequency band and noise level at the same time, 300 kHz frequency band has an excellent signal to noise ratio, and lower noise level can effectively decreases the lower limit of counting rate.
出处
《核动力工程》
EI
CAS
CSCD
北大核心
2017年第6期99-102,共4页
Nuclear Power Engineering
关键词
裂变室
宽量程
仿真
Fission chamber, Wide-range, Simulation
