Source extrapolation scheme for Monte Carlo fission source convergence based on RMC code

被引：4

作者：

Pan, Qingquan ^{[1
]}

Cai, Yun ^{[2
]}

Wang, Lianjie ^{[2
]}

Zhang, Tengfei ^{[1
]}

Liu, Xiaojing ^{[1
]}

Wang, Kan ^{[3
]}

机构：

[1] Shanghai Jiao Tong Univ, Sch Nucl Sci & Engn, Shanghai 200240, Peoples R China

[2] Nucl Power Inst China, Sci & Technol Reactor Syst Design Technol Lab, Chengdu 610200, Peoples R China

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

来源：

ANNALS OF NUCLEAR ENERGY | 2022年 / 166卷

关键词：

RMC code; Fission source convergence; Source extrapolation; ACCELERATION;

D O I：

10.1016/j.anucene.2021.108737

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

The source extrapolation method had been used to accelerate the convergence of fission sources in the deterministic methods. However, it has not been effectively used for the Monte Carlo criticality calculation. We apply the source extrapolation method to the Monte Carlo criticality calculation to accelerate the fission source convergence. An explicit and straightforward formula for determining the extrapolation factor is given based on the mathematical derivation and numerical calculations, and a new source extrapolation scheme for the Monte Carlo criticality calculation is proposed. This source extrapolation scheme is easily implemented and makes the fission sources converge twice as fast as the standard Monte Carlo criticality calculation. The validity and optimality of the source extrapolation scheme are tested by a single fuel rod model and the OECD source convergence benchmark. The results show that the new scheme can accelerate the fission source convergence. (c) 2021 Elsevier Ltd. All rights reserved.

引用

页数：8

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