Observation of synergy between lower hybrid waves at two frequencies in EAST

doi:10.1063/5.0041271

	Observation of synergy between lower hybrid waves at two frequencies in EAST
	Choi, W.2,4; Poli, F. M.2; Li, M. H.1; Baek, S. G.3; Gorenlenkova, M.2; Ding, B. J.1; Gong, X. Z.1; Chan, A.1; Duan, Y. M.1; Hu, J. H.1
刊名	PHYSICS OF PLASMAS
	2021-07-01
卷号	28
ISSN号	1070-664X
DOI	10.1063/5.0041271
通讯作者	Choi, W.(choiwilkie@fusion.gat.com)
英文摘要	Synergistic effects between two frequencies of lower hybrid (LH) waves-operating at 2.45 and 4.6GHz-were observed in experiment on EAST for the first time. At low density (n(e,lin) approximate to 2.0 x 10(19) m(-3)), simultaneous injection of a 65/35 mix of 2.45/4.6GHz power achieved an lower hybrid current drive efficiency that was 25% higher than what should be expected from the linear combination of the two sources. The experiment was interpreted with time-dependent simulations, using the equilibrium and transport solver TRANSP, coupled with the ray-tracing code GENRAY and the Fokker-Planck solver CQL3D. For each discharge, profiles of current and hard x-rays from simulation and measurement agree within uncertainties. An examination of the electron distribution function indicates that the LH synergy is supported by the increased width of the LH resonance plateau in the simultaneous injection case compared to independent injection.
资助项目	U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences[DE-AC02-09CH1146] ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences[DE-SC0010685] ; National Key R&D Program of China[2016YFA0400600]
WOS关键词	CURRENT DRIVE ; CONFINEMENT
WOS研究方向	Physics
语种	英语
出版者	AIP Publishing
WOS记录号	WOS:000691877000002
资助机构	U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences ; National Key R&D Program of China
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/125253]
专题	中国科学院合肥物质科学研究院
通讯作者	Choi, W.
作者单位	1.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Anhui, Peoples R China 2.Princeton Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA 3.MIT, Plasma Sci Fus Ctr, 77 Massachusetts Ave, Cambridge, MA 02139 USA 4.Gen Atom, San Diego, CA 92121 USA
推荐引用方式 GB/T 7714	Choi, W.,Poli, F. M.,Li, M. H.,et al. Observation of synergy between lower hybrid waves at two frequencies in EAST[J]. PHYSICS OF PLASMAS,2021,28.
APA	Choi, W..,Poli, F. M..,Li, M. H..,Baek, S. G..,Gorenlenkova, M..,...&Zhao, H. L..(2021).Observation of synergy between lower hybrid waves at two frequencies in EAST.PHYSICS OF PLASMAS,28.
MLA	Choi, W.,et al."Observation of synergy between lower hybrid waves at two frequencies in EAST".PHYSICS OF PLASMAS 28(2021).