Application of the elliptic approximation model for the edge turbulence rotation measurement via the poloidal correlation reflectometer in Wendelstein 7-X

doi:10.1088/1741-4326/abfb15

HFCAS OpenIR

	Application of the elliptic approximation model for the edge turbulence rotation measurement via the poloidal correlation reflectometer in Wendelstein 7-X
	Han,X.1,2; Kr?mer-Flecken,A.2; Xiang,H.M.1,2; Vécsei,M.3; Knieps,A.2; Windisch,T.4; Anda,G.3; Andreeva,T.4; Bozhenkov,S.A.4; Geiger,J.4; Dunai,D.3; Trier,E.5; Rahbarnia,K.4; Zoletnik,S.3; Liang,Y.2; W7-X Team,the
	2021-05-18
发表期刊	Nuclear Fusion
ISSN	0029-5515
通讯作者	Han,X.()
摘要	AbstractThe perpendicular velocity (v⊥) of turbulence is measured by means of a hopping poloidal correlation reflectometer diagnostic for the study of turbulence rotation in the plasma edge region in Wendelstein 7-X. An elliptic approximation (EA) model is applied for calculating the space-time correlation in the edge region. The v⊥ profile is compared in the high-ι (edge ι ≈ 1.2) and limiter (edge ι < 1) configurations. It is found that the v⊥ gradient is inversely proportional to the heating power in the high-ι configuration, which could be attributed to the turbulence activities in the plasma edge. In the limiter configuration, the v⊥ spike is observed near the island boundary, which is corresponded to the plasma current crash. In the standard configuration (edge ι ≈ 1), the v⊥ profile in the island region distributes as a function of the perpendicular separation. With increasing of the plasma current, the island enlarges the size as is referred from the v⊥ scope, accompanying with steepening of the v⊥ gradient at the boundary of the island.
关键词	turbulent perpendicular velocity elliptic approximation model shear flow Wendelstein 7-X poloidal correlation reflectometer
DOI	10.1088/1741-4326/abfb15
关键词[WOS]	TRANSPORT ; SHEAR
收录类别	SCI
语种	英语
资助项目	Euroatom research and training programme[633053] ; National Natural Science Foundation of China[11605235]
项目资助者	Euroatom research and training programme ; National Natural Science Foundation of China
WOS研究方向	Physics
WOS类目	Physics, Fluids & Plasmas
WOS记录号	IOP:0029-5515-61-6-abfb15
出版者	IOP Publishing
引用统计
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/122521
专题	中国科学院合肥物质科学研究院
通讯作者	Han,X.
作者单位	1.Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China 2.Forschungszentrum Jülich GmbH, Institute für Energie-und Klimaforschung—Plasmaphysik, Partner of the Trilateral Euregio Cluster (TEC), 52425 Jülich, Germany 3.Centre for Energy Research, Budapest H1121, Hungary 4.Max-Planck-Institut für Plasmaphysik, 17491 Greifswald, Germany 5.Max-Planck-Institut für Plasmaphysik, 85748 Garching, Germany
推荐引用方式 GB/T 7714	Han,X.,Kr?mer-Flecken,A.,Xiang,H.M.,et al. Application of the elliptic approximation model for the edge turbulence rotation measurement via the poloidal correlation reflectometer in Wendelstein 7-X[J]. Nuclear Fusion,2021,61.
APA	Han,X..,Kr?mer-Flecken,A..,Xiang,H.M..,Vécsei,M..,Knieps,A..,...&W7-X Team,the.(2021).Application of the elliptic approximation model for the edge turbulence rotation measurement via the poloidal correlation reflectometer in Wendelstein 7-X.Nuclear Fusion,61.
MLA	Han,X.,et al."Application of the elliptic approximation model for the edge turbulence rotation measurement via the poloidal correlation reflectometer in Wendelstein 7-X".Nuclear Fusion 61(2021).