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

被引：7

作者：

Yan Wei-Hua ^{[1
]}

Zhang Li-Guo ^{[2
]}

Zhang Yan ^{[1
]}

Zhang Zhao ^{[1
]}

Xiao Zhi-Gang ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China

[2] Tsinghua Univ, Inst Nucl Energy & Technol, Beijing 100084, Peoples R China

来源：

CHINESE PHYSICS C | 2013年 / 37卷 / 11期

基金：

中国国家自然科学基金;

关键词：

high temperature gas cooling reactor; burnup; gamma activity; Monte Carlo; FUEL;

D O I：

10.1088/1674-1137/37/11/116201

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

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 different irradiation histories. A specially developed algorithm is applied to analyze the generated spectra to reconstruct the gamma activity of the Cs-137 monitoring nuclide. It is demonstrated that by taking into account the intense interfering peaks, the Cs-137 activity in the spent pebbles can be derived with a standard deviation of 3.0% (1 sigma). 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

页数：5

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