A novel method for rapid calculation of moderated neutron spectrum and its application in deep penetration

doi:10.1016/j.anucene.2021.108895

HFCAS OpenIR

	A novel method for rapid calculation of moderated neutron spectrum and its application in deep penetration
	Cao, Chenglong 1,2; Cao, Pei 1,2; Gan, Quan 3
	2022-04-01
发表期刊	ANNALS OF NUCLEAR ENERGY
ISSN	0306-4549
通讯作者	Gan, Quan(quan.gan@fds.org.cn)
摘要	The moderated neutron spectrum has an essential influence on the neutronics experimental studies and the neutron transport simulation method (such as Monte Carlo method) is one of the important methods for the calculation of it. The Monte Carlo method is characterized by its high accuracy, however, it will bring high time-consuming problems, and it is difficult to converge in the case of deep penetration. In this research, a novel method for rapid calculation of moderated neutron spectrum was developed. It used the Monte Carlo method to decompose typical shielding materials into a library according to a fixed thickness and calculated the multi-dimensional response matrix corresponding to the shielding module. With adjustment of its thickness, the moderated neutron spectrum was able to be calculated through matrix operation. The proposed method was verified under the moderator composed of shielding mod-ules of different numbers, thickness and materials by comparing with the results of the Monte Carlo algo-rithm. The results stated the moderated neutron spectrum calculated by this method and Monte Carlo algorithm reached the order of 1.000E-06 on the MSE. Furthermore, the proposed method was verified with a simplified thermal reactor TRIGA in the case of deep penetration. The results showed that the moderated neutron spectrum in the convergent energy range of the two methods also performed well, and in the non-convergent energy range, the proposed method could give a heuristic neutron spectrum.(c) 2021 Elsevier Ltd. All rights reserved.
关键词	Moderated neutron spectrum Deep penetration Multi-dimensional response matrix Matrix operation TRIGA
DOI	10.1016/j.anucene.2021.108895
关键词[WOS]	CARLO VARIANCE REDUCTION
收录类别	SCI
语种	英语
资助项目	Young Elite Scientists Sponsorship Program by CAST[2017QNRC001] ; Informatization Project of Chinese Academy of Sciences[XXH13506-104]
项目资助者	Young Elite Scientists Sponsorship Program by CAST ; Informatization Project of Chinese Academy of Sciences
WOS研究方向	Nuclear Science & Technology
WOS类目	Nuclear Science & Technology
WOS记录号	WOS:000793273600007
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/130762
专题	中国科学院合肥物质科学研究院
通讯作者	Gan, Quan
作者单位	1.Univ Sci & Technol China, Hefei 230027, Anhui, Peoples R China 2.Chinese Acad Sci, Hefei Inst Phys Sci, Inst Nucl Energy Safety Technol, Hefei 230031, Anhui, Peoples R China 3.Int Acad Neutron Sci, Qingdao 266199, Shandong, Peoples R China
推荐引用方式 GB/T 7714	Cao, Chenglong,Cao, Pei,Gan, Quan. A novel method for rapid calculation of moderated neutron spectrum and its application in deep penetration[J]. ANNALS OF NUCLEAR ENERGY,2022,168.
APA	Cao, Chenglong,Cao, Pei,&Gan, Quan.(2022).A novel method for rapid calculation of moderated neutron spectrum and its application in deep penetration.ANNALS OF NUCLEAR ENERGY,168.
MLA	Cao, Chenglong,et al."A novel method for rapid calculation of moderated neutron spectrum and its application in deep penetration".ANNALS OF NUCLEAR ENERGY 168(2022).