Study on Development of ASCFR1.0/MC and Initial Calculation of Moderator Temperature Effect for ASCFR
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摘要: 为研制出适用于改进型超临界水冷快堆的精确截面库(ASCFR1.0/MC),并将其应用于温度效应的计算中,首先使用快中子临界基准题JEZEBEL对截面加工程序(NJOY)中各模块的重要参数进行敏感度分析,详细比较不同输入参数对NJOY加工时间以及MCNP程序计算精度的影响,从而选择最为合理的输入参数。在此基础上,以2011年9月发布的ENDF/B-VII.1为基础库研制ASCFR1.0/MC,并针对该库应用多普勒反应性系数基准题进行基准验证。验证结果表明,ASCFR1.0/MC库的计算精度非常理想。最后针对改进型超临界水冷快堆(ASCFR)的固体慢化剂进行温度反应性系数的初步计算,发现ASCFR呈现正的慢化剂温度效应。
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关键词:
- ASCFR1.0/MC截面库 /
- 基准验证 /
- 慢化剂温度效应
Abstract: In order to develop the temperature-dependent point-wise cross section library for the advanced supercritical water cooled fast reactor, the JEZEBEL fast neutron benchmark was used to analyze the important parameters of the NJOY code and compare the different effects of the input parameters. Then the most reasonable parameters were selected to develop the ASCFR1.0/MC which was based on the ENDF/B-VII.1. Finally, the Doppler coefficient benchmark was applied to test and verify the ASCFR.10/MC. In conclusion, the precision of the ASCFR1.0/MC were perfect. The resulted library can be used in the analysis and verification of the temperature effect in the Advanced Supercritical Fast Reactor（ASCFR）. Finally, the moderator effect of ASCFR was calculated with MCNP using the ASCFR1.0/MC library, and the moderator effect of the ASCFR is positive. -
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