Impact of toroidal and poloidal mode spectra on the control of non-axisymmetric fields in tokamaks

doi:10.1063/1.4982688

CORC > 合肥物质科学研究院 > 中国科学院合肥物质科学研究院 > 中科院等离子体物理研究所

	Impact of toroidal and poloidal mode spectra on the control of non-axisymmetric fields in tokamaks
	Lanctot, M. J.1,2; Park, J. -K.3; Piovesan, P.4; Sun, Y.5 ; Buttery, R. J.1; Frassinetti, L.6; Grierson, B. A.3; Hanson, J. M.7; Haskey, S. R.3; In, Y.8
刊名	PHYSICS OF PLASMAS
	2017-05-01
卷号	24 期号:5 页码:1-12
DOI	10.1063/1.4982688
文献子类	Article
英文摘要	In several tokamaks, non-axisymmetric magnetic field studies show that applied magnetic fields with a toroidal harmonic n = 2 can lead to disruptive n = 1 locked modes. In Ohmic plasmas, n = 2 magnetic reconnection thresholds in otherwise stable discharges are readily accessed at edge safety factors q similar to 3, low density, and low rotation. Similar to previous studies with n = 1 fields, the thresholds are correlated with the "overlap" field computed with the IPEC code. The overlap field quantifies the plasma-mediated coupling of the external field to the resonant field. Remarkably, the "critical overlap fields" at which magnetic islands form are similar for applied n = 1 and 2 fields. The critical overlap field increases with plasma density and edge safety factor but is independent of the toroidal field. Poloidal harmonics m> nq dominate the drive for resonant fields while m < nq harmonics have a negligible impact. This contrasts with previous results in H-mode discharges at high plasma pressure in which the toroidal angular momentum is sensitive to low poloidal harmonics. Together, these results highlight unique requirements for n > 1 field control including the need for multiple rows of coils to control selected plasma parameters for specific functions (e.g., rotation control or ELM suppression). Published by AIP Publishing.
WOS关键词	DIII-D ; MOMENTUM DISSIPATION ; PLASMA
WOS研究方向	Physics
语种	英语
WOS记录号	WOS:000400817900134
资助机构	U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences(DE-FC02-04ER54698 ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences(DE-FC02-04ER54698 ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences(DE-FC02-04ER54698 ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences(DE-FC02-04ER54698 ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences(DE-FC02-04ER54698 ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences(DE-FC02-04ER54698 ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences(DE-FC02-04ER54698 ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences(DE-FC02-04ER54698 ; Euratom research and training programme(633053) ; Euratom research and training programme(633053) ; Euratom research and training programme(633053) ; Euratom research and training programme(633053) ; Euratom research and training programme(633053) ; Euratom research and training programme(633053) ; Euratom research and training programme(633053) ; Euratom research and training programme(633053) ; DE-AC02-09CH11466 ; DE-AC02-09CH11466 ; DE-AC02-09CH11466 ; DE-AC02-09CH11466 ; DE-AC02-09CH11466 ; DE-AC02-09CH11466 ; DE-AC02-09CH11466 ; DE-AC02-09CH11466 ; DE-FG02-05ER54809 ; DE-FG02-05ER54809 ; DE-FG02-05ER54809 ; DE-FG02-05ER54809 ; DE-FG02-05ER54809 ; DE-FG02-05ER54809 ; DE-FG02-05ER54809 ; DE-FG02-05ER54809 ; DE-FG02-04ER54761) ; DE-FG02-04ER54761) ; DE-FG02-04ER54761) ; DE-FG02-04ER54761) ; DE-FG02-04ER54761) ; DE-FG02-04ER54761) ; DE-FG02-04ER54761) ; DE-FG02-04ER54761) ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences(DE-FC02-04ER54698 ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences(DE-FC02-04ER54698 ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences(DE-FC02-04ER54698 ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences(DE-FC02-04ER54698 ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences(DE-FC02-04ER54698 ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences(DE-FC02-04ER54698 ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences(DE-FC02-04ER54698 ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences(DE-FC02-04ER54698 ; Euratom research and training programme(633053) ; Euratom research and training programme(633053) ; Euratom research and training programme(633053) ; Euratom research and training programme(633053) ; Euratom research and training programme(633053) ; Euratom research and training programme(633053) ; Euratom research and training programme(633053) ; Euratom research and training programme(633053) ; DE-AC02-09CH11466 ; DE-AC02-09CH11466 ; DE-AC02-09CH11466 ; DE-AC02-09CH11466 ; DE-AC02-09CH11466 ; DE-AC02-09CH11466 ; DE-AC02-09CH11466 ; DE-AC02-09CH11466 ; DE-FG02-05ER54809 ; DE-FG02-05ER54809 ; DE-FG02-05ER54809 ; DE-FG02-05ER54809 ; DE-FG02-05ER54809 ; DE-FG02-05ER54809 ; DE-FG02-05ER54809 ; DE-FG02-05ER54809 ; DE-FG02-04ER54761) ; DE-FG02-04ER54761) ; DE-FG02-04ER54761) ; DE-FG02-04ER54761) ; DE-FG02-04ER54761) ; DE-FG02-04ER54761) ; DE-FG02-04ER54761) ; DE-FG02-04ER54761)
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/31913]
专题	合肥物质科学研究院_中科院等离子体物理研究所
作者单位	1.Gen Atom Co, POB 85608, San Diego, CA 92186 USA 2.US DOE, 1000 Independence Ave SW, Washington, DC 20585 USA 3.Princeton Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA 4.Univ Padua, Acciaierie Venete SpA, Consorzio RFX, CNR,ENEA,INFN, Corso Stati Uniti 4, I-35127 Padua, Italy 5.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China 6.KTH Royal Inst Technol, Div Fus Plasma Phys, Stockholm, Sweden 7.Columbia Univ, New York, NY 10027 USA 8.Natl Fus Res Inst, Daejeon, South Korea 9.EURATOM ENEA Assoc, Consorzio RFX, Corso Stati Uniti 4, I-35127 Padua, Italy 10.Univ Calif San Diego, Ctr Energy Res, La Jolla, CA 92093 USA
推荐引用方式 GB/T 7714	Lanctot, M. J.,Park, J. -K.,Piovesan, P.,et al. Impact of toroidal and poloidal mode spectra on the control of non-axisymmetric fields in tokamaks[J]. PHYSICS OF PLASMAS,2017,24(5):1-12.
APA	Lanctot, M. J..,Park, J. -K..,Piovesan, P..,Sun, Y..,Buttery, R. J..,...&JET Contributors.(2017).Impact of toroidal and poloidal mode spectra on the control of non-axisymmetric fields in tokamaks.PHYSICS OF PLASMAS,24(5),1-12.
MLA	Lanctot, M. J.,et al."Impact of toroidal and poloidal mode spectra on the control of non-axisymmetric fields in tokamaks".PHYSICS OF PLASMAS 24.5(2017):1-12.