Experimental investigation of lower hybrid current drive induced plasma rotation on the experimental advanced superconducting tokamak

doi:10.7498/aps.69.20191716

HFCAS OpenIR

	Experimental investigation of lower hybrid current drive induced plasma rotation on the experimental advanced superconducting tokamak
	Yang Jin 1,2; Chen Jun2,3 ; Wang Fu-Di2 ; Li Ying-Ping 2; Lyu Bo 2; Xiang Dong 1; Yin Xiang-Hui 4; Zhang Hong-Ming 2; Fu Jia 2; Liu Hai-Qing2 ; Zang Qing2 ; Chu Yu-Qi 2; Liu Jian-Wen 2; Wang Xun-Yu 1,2; Bin Bin 2; He Liang 1,2; Wan Shun-Kuan 2; Gong Xue-Yu 1; Ye Min-You 3
	2020-03-05
发表期刊	ACTA PHYSICA SINICA
ISSN	1000-3290
通讯作者	Lyu Bo(blu@ipp.ac.cn) ; Xiang Dong(xiangong007@163.com)
摘要	Rotation and its shear can reduce the magnetohydrodynamic instabilities and enhance the confinement. The LHCD has been proposed as a possible means of rotation driving on a future fusion reactor. Exploring the mechanisms of LHCD rotation driving on the current tokamaks can provide important reference for future reactors. On EAST, it was previously shown that 2.45 GHz LHCD can drive plasma toroidal rotation and the change of edge plasma rotation leads the co-current core rotation to increase. At higher frequency, 4.6 GHz lower hybrid wave can more effectively drive co-current plasma toroidal rotation. On EAST, at the lower current, the effects of different LHCD power on plasma toroidal rotation are analyzed. Higher power LHCD has a better driving efficiency. The effect of safety factor (q) profile on toroidal rotation is also presented. The LHCD can change the profile of safety factor due to current drive. It is found that when the power exceeds 1.4MW, the q profile remains unchanged and the rotation changes only very slightly with LHCD power, suggesting that the current profile is closely related to rotation. In order to further analyze the dynamic process of plasma toroidal rotation driven by lower hybrid current drive on EAST, the toroidal momentum transport due to LHCD is deduced by using the modulated LHCD power injection. Based on the momentum balance equation, the toroidal momentum diffusion coefficient (chi(phi)) and the toroidal momentum pinch coefficient (V-pinch) are obtained by the method of separation of variables and Fourier analysis for the region where the external momentum source can be ignored. It is found that the momentum diffusion coefficient (chi(phi)) and momentum pinch coefficient (V-pinch) tend to increase from the core to the outer region. This is consistent with the characteristic that the toroidal rotation velocity first changes in the outer region and then propagates to the core when the toroidal rotation is driven by LHCD.
关键词	lower hybrid current drive toroidal rotation velocity safety factor toroidal momentum transport
DOI	10.7498/aps.69.20191716
关键词[WOS]	MOMENTUM-TRANSPORT ; TOROIDAL ROTATION
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Plan of China[2017YFE0301300] ; Distinguished Young Scholar of Anhui Province, China[1908085J01] ; Key Program of Research and Development of Hefei Science Center Chinese Academy of Sciences[2017HSC-KPRD002] ; Instrument Developing Project of the Chinese Academy of Sciences[YJKYYQ20180013]
项目资助者	National Key Research and Development Plan of China ; Distinguished Young Scholar of Anhui Province, China ; Key Program of Research and Development of Hefei Science Center Chinese Academy of Sciences ; Instrument Developing Project of the Chinese Academy of Sciences
WOS研究方向	Physics
WOS类目	Physics, Multidisciplinary
WOS记录号	WOS:000527802300014
出版者	CHINESE PHYSICAL SOC
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/103386
专题	中国科学院合肥物质科学研究院
通讯作者	Lyu Bo; Xiang Dong
作者单位	1.Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China 2.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China 3.Univ Sci & Technol China, Dept Engn & Appl Phys, Hefei 230026, Peoples R China 4.Univ South China, Sch Elect Engn, Hengyang 421001, Peoples R China
第一作者单位	中科院等离子体物理研究所
通讯作者单位	中科院等离子体物理研究所
推荐引用方式 GB/T 7714	Yang Jin,Chen Jun,Wang Fu-Di,et al. Experimental investigation of lower hybrid current drive induced plasma rotation on the experimental advanced superconducting tokamak[J]. ACTA PHYSICA SINICA,2020,69.
APA	Yang Jin.,Chen Jun.,Wang Fu-Di.,Li Ying-Ping.,Lyu Bo.,...&Ye Min-You.(2020).Experimental investigation of lower hybrid current drive induced plasma rotation on the experimental advanced superconducting tokamak.ACTA PHYSICA SINICA,69.
MLA	Yang Jin,et al."Experimental investigation of lower hybrid current drive induced plasma rotation on the experimental advanced superconducting tokamak".ACTA PHYSICA SINICA 69(2020).