Comparison of global variance reduction techniques for Monte Carlo radiation transport simulations of ITER

被引：72

作者：

Davis, Andrew ^{[1
]}

Turner, Andrew ^{[1
]}

机构：

[1] EURATOM CCFE Fus Assoc, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England

来源：

FUSION ENGINEERING AND DESIGN | 2011年 / 86卷 / 9-11期

基金：

欧盟地平线“2020”; 英国工程与自然科学研究理事会;

关键词：

Variance reduction; MCNP; Neutronics; ITER;

D O I：

10.1016/j.fusengdes.2011.01.059

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：

It is known that a priori information on the distribution of neutron fluxes around a neutron transport model can improve the computational efficiency of Monte Carlo transport calculations. The uncertainty lies in finding a method which obtains this information as fast and effortlessly as possible. A number of global variance reduction techniques were tested on the ITER reference neutronics model for their applicability for performing large three-dimensional transport simulations for ITER. Among these, we propose a new method which is computationally fast and efficient in determining the a priori flux information. The new method, known as MAGIC, was found to perform well achieving an efficiency 74 times that of an analogue run; the next most efficient was FW-CADIS, performing 48 times better than analogue. (C) 2011 EURATOM. Published by Elsevier B.V. All rights reserved.

引用

页码：2698 / 2700

页数：3