A new neutron energy spectrum unfolding code using a two steps genetic algorithm

被引：20
|
作者：
Shahabinejad, H. [1 ]
Hosseini, S. A. [1 ]
Sohrabpour, M. [1 ]
机构：
[1] Sharif Univ Technol, Dept Energy Engn, Tehran, Iran
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2016年 / 811卷
关键词：
Neutron spectrum unfolding; Genetic algorithm; TGASU; MCNPX-ESUT; LSQR;
D O I：
10.1016/j.nima.2015.12.028
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
A new neutron spectrum unfolding code TGASU (Two-steps Genetic Algorithm Spectrum Unfolding) has been developed to unfold the neutron spectrum from a pulse height distribution which was calculated using the MCNPX-ESUT computational Monte Carlo code. To perform the unfolding process, the response matrices were generated using the MCNPX-ESUT computational code. Both one step (common GA) and two steps GAs have been implemented to unfold the neutron spectra. According to the obtained results, the new two steps GA code results has shown closer match in all energy regions and particularly in the high energy regions. The results of the TGASU code have been compared with those of the standard spectra, LSQR method and GAMCD code. The results of the TGASU code have been demonstrated to be more accurate than that of the existing computational codes for both under-determined and over determined problems. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：82 / 93
页数：12
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