Influence of triangularity on the plasma response to resonant magnetic perturbations

doi:10.1088/1741-4326/ac5f7b

	Influence of triangularity on the plasma response to resonant magnetic perturbations
	Gu, S.2; Paz-Soldan, C.3; Liu, Y. Q.4; Sun, Y.5; Lyons, B. C.4; Ryan, D. A.6; Weisberg, D.4; Leuthold, N.3; Willensdorfer, M.7; Suttrop, W.7
刊名	NUCLEAR FUSION
	2022-07-01
卷号	62
关键词	plasma response triangularity RMP ELM control
ISSN号	0029-5515
DOI	10.1088/1741-4326/ac5f7b
通讯作者	Gu, S.(gus@fusion.gat.com)
英文摘要	The effect of the axisymmetric plasma shape on the non-axisymmetric plasma response to resonant magnetic perturbations is investigated in experiment and modeling for the DIII-D, EAST and ASDEX Upgrade tokamaks. Systematically modeling the effect of the triangularity, whilst keeping other equilibrium quantities largely unchanged, reveals that the plasma response is strongly suppressed at high triangularity compared to that at low triangularity. This is validated through targeted comparison with experiments at DIII-D, EAST, and ASDEX Upgrade. DIII-D and EAST magnetic measurements are used to validate simulations, while at ASDEX Upgrade the plasma edge displacement is measured. Both experiments and modeling find a reduced magnetic plasma response on the high-field side at high triangularity across devices. Multi-modal analysis of the simulation results extracts the mode structure and applied spectrum dependence of each mode. The amplitude of the dominant mode reveals similar trends with the edge resonance and radial displacement near the X-point, which suggests that the multi-mode plasma response provides another way to understand the edge localized mode (ELM) control physics. The plasma response is strongly reduced at high triangularity compared to that at low triangularity, which implies different ELM control effects as shaping is varied. These findings indicate that the plasma shape should be taken into consideration when designing an RMP-ELM control strategy in experiment, and that predictive plasma response calculations can be used to maximize access to RMP-ELM control in future devices by maximizing the coupling between coils and the plasma.
资助项目	US DOE[DE-SC0020298] ; US DOE[DE-SC0021968] ; US DOE[DE-FC02-04ER54698] ; US DOE[DE-AC52-07NA27344] ; US DOE[DE-AC02-09CH11466] ; US DOE[DE-SC0022270] ; US DOE[DE-AC05-00OR22725] ; National Key R&D Program of China[2017YFE0301100] ; National Natural Science Foundation of China[11875292] ; National Natural Science Foundation of China[11805237] ; Euratom research and training programme 2014-2018 and 2019-2020[633053]
WOS研究方向	Physics
语种	英语
出版者	IOP Publishing Ltd
WOS记录号	WOS:000792476800001
资助机构	US DOE ; National Key R&D Program of China ; National Natural Science Foundation of China ; Euratom research and training programme 2014-2018 and 2019-2020
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/130815]
专题	中国科学院合肥物质科学研究院
通讯作者	Gu, S.
作者单位	1.Princeton Plasma Phys Lab, Princeton, NJ 08543 USA 2.Oak Ridge Associated Univ, Oak Ridge, TN 37830 USA 3.Columbia Univ, Dept Appl Phys & Appl Math, New York, NY 10027 USA 4.Gen Atom, POB 85608, San Diego, CA 92186 USA 5.Chinese Acad Sci, Inst Plasma Phys, POB 1126, Hefei 230031, Peoples R China 6.Culham Sci Ctr, CCFE, Abingdon OX14 3DB, Oxon, England 7.Max Planck Inst Plasma Phys, D-85748 Garching, Germany 8.Lawrence Livermore Natl Lab, Livermore, CA 94550 USA 9.Oak Ridge Natl Lab, POB 2008, Oak Ridge, TN 37831 USA 10.Univ Sci & Technol China, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	Gu, S.,Paz-Soldan, C.,Liu, Y. Q.,et al. Influence of triangularity on the plasma response to resonant magnetic perturbations[J]. NUCLEAR FUSION,2022,62.
APA	Gu, S..,Paz-Soldan, C..,Liu, Y. Q..,Sun, Y..,Lyons, B. C..,...&Griener, M..(2022).Influence of triangularity on the plasma response to resonant magnetic perturbations.NUCLEAR FUSION,62.
MLA	Gu, S.,et al."Influence of triangularity on the plasma response to resonant magnetic perturbations".NUCLEAR FUSION 62(2022).