Improvements of the on-the-fly MC variance reduction technique with dynamic WW upper bounds

doi:10.1088/1741-4326/ac75fc

	Improvements of the on-the-fly MC variance reduction technique with dynamic WW upper bounds
	Zheng, Yu 2,5; Qiu, Yuefeng 3; Lu, Peng 1; Chen, Yixue 4; Fischer, Ulrich 3; Liu, Songlin 5
刊名	NUCLEAR FUSION
	2022-08-01
卷号	62
关键词	Monte Carlo long history variance reduction weight window MCNP
ISSN号	0029-5515
DOI	10.1088/1741-4326/ac75fc
通讯作者	Qiu, Yuefeng(yuefeng.qiu@kit.edu) ; Liu, Songlin(slliu@ipp.ac.cn)
英文摘要	This paper presents the recent progress in the development of the on-the-fly global variance reduction (OTF-GVR) method for Monte Carlo (MC) shielding calculations. OTF-GVR method provides on-the-fly weight window mesh (WWM) generation along with the particle transport simulation. In the previous study, the solution for the so-called 'long-history' problem, in which particles are unnecessarily over-split, is empirical and not fully effective. In this work, an innovative method using dynamic WWM upper bounds was proposed, which diminishes the over-splitting particles by relaxing the weight-windows upper bounds. This method has been proven effective through applications for several fusion reactors and neutron source facilities, with excellent performances over analogue simulations and variance reduction runs using common GVR methods.
资助项目	National MCF Energy RD Program[2019YFE03110002] ; Chinese National Natural Science Foundation[11775256]
WOS研究方向	Physics
语种	英语
出版者	IOP Publishing Ltd
WOS记录号	WOS:000814827700001
资助机构	National MCF Energy RD Program ; Chinese National Natural Science Foundation
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/129572]
专题	中国科学院合肥物质科学研究院
通讯作者	Qiu, Yuefeng; Liu, Songlin
作者单位	1.Hefei Comprehens Natl Sci Ctr, Inst Energy, Hefei 230031, Anhui, Peoples R China 2.Univ Sci & Technol China, Hefei 230026, Peoples R China 3.Karlsruhe Inst Technol KIT, Hermann von Helmholtz Pl 1, D-76344 Karlsruhe, Germany 4.North China Elect Power Univ, Sch Nucl Sci & Engn, Beijing 102206, Peoples R China 5.Chinese Acad Sci, Inst Plasma Phys, Hefei Inst Phys Sci, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Zheng, Yu,Qiu, Yuefeng,Lu, Peng,et al. Improvements of the on-the-fly MC variance reduction technique with dynamic WW upper bounds[J]. NUCLEAR FUSION,2022,62.
APA	Zheng, Yu,Qiu, Yuefeng,Lu, Peng,Chen, Yixue,Fischer, Ulrich,&Liu, Songlin.(2022).Improvements of the on-the-fly MC variance reduction technique with dynamic WW upper bounds.NUCLEAR FUSION,62.
MLA	Zheng, Yu,et al."Improvements of the on-the-fly MC variance reduction technique with dynamic WW upper bounds".NUCLEAR FUSION 62(2022).