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Design of quasi-axisymmetric stellarators with variable-thickness perpendicular permanent magnets based on a two-step magnet design strategy

文献类型：期刊论文

作者Lu, Z. Y.1,2; Xu, G. S.1; Chen, D. H.1; Chen, L.1; Zhang, X. Y.1,2; Ye, M. Y.2; Wan, B. N.1
刊名NUCLEAR FUSION
出版日期2021-10-01
卷号61
关键词stellarator permanent magnet two-step magnet design strategy local compensation method global fine-tuning method
ISSN号0029-5515
DOI10.1088/1741-4326/ac1710
通讯作者Xu, G. S.(gsxu@ipp.ac.cn) ; Chen, D. H.(dehong.chen@ipp.ac.cn)
英文摘要A new method for designing stellarators with variable-thickness perpendicular permanent magnets has been developed, based on a two-step magnet design strategy that we previously proposed for designing stellarators with standardized magnet blocks. Our design strategy uses a 'local compensation' method to obtain an initial magnet design and a 'global fine-tuning' method to further optimize the initial design. The new method is compared to the previously proposed Fourier decomposition method, and the results indicate that this new method can yield a similar magnet design for an N-fp = 2 quasi-axisymmetric stellarator at a lower computational cost. High accuracy is achieved, as demonstrated by a normal magnetic field square on the plasma surface of chi(2)(B) = 3.43 x 10(-8) T(2)m(2), a maximum residual of vertical bar B-n vertical bar = 3.44 Gs for a similar to 1 T total field, and a flux-surface-averaged residual B-n of = 3.16 x 10(-5) relative to the total field. Furthermore, the new method can automatically yield a magnet design with large areas of continuous vacancies for ports and plasma access, which is more flexible than the Fourier decomposition method. These results indicate that the new method is robust and effective when used to design stellarators with variable-thickness perpendicular permanent magnets, and, most importantly, that the two-step magnet design strategy has great potential to develop permanent magnet design methods suitable for various magnet layouts.
资助项目National Magnetic Confinement Fusion Energy R&D Program of China[2019YFE03030000] ; National Natural Science Foundation of China[U19A20113] ; Key Research Program of Frontier Sciences, CAS[QYZDB-SSW-SLH001] ; CASHIPS Director's Fund[BJPY2019A01] ; K.C. Wong Education Foundation
WOS研究方向Physics
语种英语
WOS记录号WOS:000696375000001
出版者IOP PUBLISHING LTD
资助机构National Magnetic Confinement Fusion Energy R&D Program of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences, CAS ; CASHIPS Director's Fund ; K.C. Wong Education Foundation
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/125321]  
专题中国科学院合肥物质科学研究院
通讯作者Xu, G. S.; Chen, D. H.
作者单位1.Chinese Acad Sci, Inst Plasma Phys, Hefei Inst Phys Sci, Hefei 230031, Peoples R China
2.Univ Sci & Technol China, Hefei 230026, Peoples R China
推荐引用方式
GB/T 7714		 Lu, Z. Y.,Xu, G. S.,Chen, D. H.,et al. Design of quasi-axisymmetric stellarators with variable-thickness perpendicular permanent magnets based on a two-step magnet design strategy[J]. NUCLEAR FUSION,2021,61.
APA Lu, Z. Y..,Xu, G. S..,Chen, D. H..,Chen, L..,Zhang, X. Y..,...&Wan, B. N..(2021).Design of quasi-axisymmetric stellarators with variable-thickness perpendicular permanent magnets based on a two-step magnet design strategy.NUCLEAR FUSION,61.
MLA Lu, Z. Y.,et al."Design of quasi-axisymmetric stellarators with variable-thickness perpendicular permanent magnets based on a two-step magnet design strategy".NUCLEAR FUSION 61(2021).

入库方式： OAI收割

来源：合肥物质科学研究院

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