Monte Carlo studies on the burnup measurement for the high temperature gas cooling reactor

被引：0
作者：
闫威华 [1 ]
张立国 [2 ]
张嫣 [1 ]
张钊 [1 ]
肖志刚 [1 ]
机构：
[1] Department of Physics, Tsinghua University
[2] Institute of Nuclear Energy and Technology, Tsinghua University
来源：
Chinese Physics C | 2013年 / 11期
基金：
中国国家自然科学基金;
关键词：
high temperature gas cooling reactor; burnup; γ activity; Monte Carlo;
D O I：
暂无
中图分类号：
TL34 [反应堆材料及其性能];
学科分类号：
082701 ;
摘要：
Online fuel pebble burnup measurement in a future high temperature gas cooling reactor is proposed for implementation through a high purity germanium(HPGe) gamma spectrometer. By using KORIGEN software and MCNP Monte Carlo simulations, the single pebble gamma radiations to be recorded in the detector are simulated under diferent irradiation histories. A specially developed algorithm is applied to analyze the generated spectra to reconstruct the gamma activity of the 137Cs monitoring nuclide. It is demonstrated that by taking into account the intense interfering peaks, the 137Cs activity in the spent pebbles can be derived with a standard deviation of 3.0%(1σ). The results support the feasibility of utilizing the HPGe spectrometry in the online determination of the pebble burnup in future modular pebble bed reactors.
引用
收藏
页码：60 / 64
页数：5
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