An investigation for an optimized neutron energy-group structure in thermal lattices using Particle Swarm Optimization

被引：12

作者：

Akbari, M. ^{[1
]}

Minuchehr, A. ^{[1
]}

Zolfaghari, A. ^{[1
]}

Khoshahval, F. ^{[1
]}

机构：

[1] Shahid Beheshti Univ, Fac Engn, GC, Tehran, Iran

来源：

ANNALS OF NUCLEAR ENERGY | 2012年 / 47卷

关键词：

Energy group structure; Optimization; WIMS library; NJOY data processing; Thermal lattices;

D O I：

10.1016/j.anucene.2012.02.016

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：

This paper describes an improvement pertaining to the energy group structure of WIMS code in thermal lattices using Particle Swarm Optimization method. The 69 group WIMS cross section library for the specified energy structure is generated using NJOY data processing system. The integral parameters of thermal reactor lattices BAPL-UO2 and TRX are calculated by WIMSD5 code using the generated library. These parameters are compared against the results of continuous energy MCNP-4C code and are served for evaluating the energy group structure. Minimization of the errors in integral parameters and multiplication factor is considered as the objective function. Calculation results show that for thermal reactor lattices where the enrichment of uranium is slight, the optimized energy group structure obtains more precise results comparing with the original WIMS structure. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：53 / 61

页数：9

共 25 条

[1]

[Anonymous], EVOLUTIONARY PROGRAM

[2]

ASKEW JR, 1966, J BRIT NUCL ENER SOC, V5, P564

[3]

Briesmeister J.F., 2000, CCC700 ORNL

[4] The particle swarm - Explosion, stability, and convergence in a multidimensional complex space [J].