Plasma edge density fluctuation measurements via lithium beam emission spectroscopy on EAST

doi:10.1088/2058-6272/ac4d1e

HFCAS OpenIR

	Plasma edge density fluctuation measurements via lithium beam emission spectroscopy on EAST
	Wu, Donggui 1,2; Hu, Guanghai1 ; Zoletnik, S.3; Xu, Guosheng1 ; Ding, Siye1 ; Liu, Jianbin1 ; Shao, Linming1 ; Wang, Yifeng 1; Chen, Ran1 ; Yan, Ning1 ; Chao, Yan 1; Wang, Ping 1,2; Dunai, D.3; Anda, G.3; Chen, Liang1 ; Wang, Liang1,4
	2022-05-01
发表期刊	PLASMA SCIENCE & TECHNOLOGY
ISSN	1009-0630
通讯作者	Hu, Guanghai(ghhu@ipp.ac.cn) ; Wang, Liang(lwang@ipp.ac.cn)
摘要	Accurate and stable measurements of edge density fluctuation with high spatio-temporal resolution have been achieved by the lithium beam emission spectroscopy (Li-BES) diagnostic on experimental and advanced superconducting tokamak (EAST). The new narrower band interference filter exhibits good ability to suppress background emission signal even under strong lithium coating of the tokamak. The raw data measured by channels at different spatial locations in avalanche photo diode camera with high chopping frequency show good consistency. Based on the detected experimental data, detailed information of density profile and fluctuation structures is obtained. A clear edge coherent mode in the auto-power spectrum is observed in pedestal region, which is regarded as the dominant factor for the strong pedestal density fluctuation amplitude. The cross-power spectrum analysis further excludes the additional effects of common-mode noises and non-local perturbation, demonstrating that the detected fluctuation is only caused by local density fluctuation. The normalized radial and poloidal wave-number spectra can specify the quantitative changes of radial wavenumber (k (r)) and poloidal wavenumber (k (theta)) during the pedestal density fluctuation phase. This new Li-BES system, which can provide more accurate experimental data, allows further studies of edge density fluctuation and complex transport process on EAST.
关键词	Li-BES new filter density fluctuation 2D turbulence
DOI	10.1088/2058-6272/ac4d1e
关键词[WOS]	TURBULENCE ; TRANSPORT ; PROFILE
收录类别	SCI
语种	英语
资助项目	National Key R&D Program of China[2017YFA0301300] ; National Key R&D Program of China[2019YFE03030000] ; National Natural Science Foundation of China[11805238] ; National Natural Science Foundation of China[11775264] ; National Natural Science Foundation of China[11922513] ; National Natural Science Foundation of China[U19A20113] ; National Natural Science Foundation of China[11905255] ; National Natural Science Foundation of China[12005004] ; Anhui Provincial Natural Science Foundation[2008085QA38] ; Institute of Energy, Hefei Comprehensive National Science Center[GXXT-2020-004] ; EAST team
项目资助者	National Key R&D Program of China ; National Natural Science Foundation of China ; Anhui Provincial Natural Science Foundation ; Institute of Energy, Hefei Comprehensive National Science Center ; EAST team
WOS研究方向	Physics
WOS类目	Physics, Fluids & Plasmas
WOS记录号	WOS:000783687000001
出版者	IOP Publishing Ltd
引用统计
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/128550
专题	中国科学院合肥物质科学研究院
通讯作者	Hu, Guanghai; Wang, Liang
作者单位	1.Chinese Acad Sci, Inst Plasma Phys, Hefei Inst Phys Sci, Hefei 230031, Peoples R China 2.Univ Sci & Technol China, Hefei 230026, Peoples R China 3.Ctr Energy Res, H-1121 Budapest, Hungary 4.Hefei Comprehens Natl Sci Ctr, Inst Energy, Hefei 230031, 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	Wu, Donggui,Hu, Guanghai,Zoletnik, S.,et al. Plasma edge density fluctuation measurements via lithium beam emission spectroscopy on EAST[J]. PLASMA SCIENCE & TECHNOLOGY,2022,24.
APA	Wu, Donggui.,Hu, Guanghai.,Zoletnik, S..,Xu, Guosheng.,Ding, Siye.,...&Wang, Liang.(2022).Plasma edge density fluctuation measurements via lithium beam emission spectroscopy on EAST.PLASMA SCIENCE & TECHNOLOGY,24.
MLA	Wu, Donggui,et al."Plasma edge density fluctuation measurements via lithium beam emission spectroscopy on EAST".PLASMA SCIENCE & TECHNOLOGY 24(2022).