Impact of core electron temperature on current profile broadening with radio-frequency wave heating and current drive in EAST

doi:10.1088/2058-6272/ac742d

	Impact of core electron temperature on current profile broadening with radio-frequency wave heating and current drive in EAST
	ZHANG, Jiayuan 2,3; QIAN, Jinping 3; GONG, Xianzu 3; ZHANG, Bin 3; WU, Muquan 1; LI, Miaohui 3; CHEN, Jiale 3; ZANG, Qing 3; LIN, Shiyao 3; CHAO, Yan 2,3
刊名	PLASMA SCIENCE & TECHNOLOGY
	2022-10-01
卷号	24
关键词	current profile broadening equilibrium reconstruction core electron temperature lower hybrid wave
ISSN号	1009-0630
DOI	10.1088/2058-6272/ac742d
通讯作者	QIAN, Jinping(jpqian@ipp.ac.cn)
英文摘要	In recent EAST experiments, current profile broadening characterized by reduced internal inductance has been achieved by utilizing radio-frequency current drives (RFCD). In contrast to previous density scan experiments, which showed an outward shift of the current density profile of lower hybrid current drive (LHCD) in higher plasma density, the core electron temperature (T (e)(0)) is found to affect the LHCD current profile as well. According to equilibrium reconstruction, a significant increase in on-axis safety factor (q (0)) from 2.05 to 3.41 is observed by careful arrangement of RFCD. Simulations using ray-tracing code GENRAY and Fokker-Planck code CQL3D have been performed to thoroughly analyze the LHCD current profile, revealing the sensitivity of the LHCD current profile to T (e)(0). The LHCD current density tends to accumulate in the plasma core with higher current drive efficiency benefiting from higher T (e)(0). With a lower T (e)(0), the LHCD current profile broadens due to off-axis deposition of power density. The sensitivity of the power deposition and current profile of LHCD to T (e)(0) provides a promising way to effectively optimize current profile via control of the core electron temperature.
资助项目	National MCF Energy R&D Program of China[2019YFE0304000] ; National Natural Science Foundation of China[12005262] ; National Natural Science Foundation of China[11975274] ; Anhui Provincial Natural Science Foundation[2108085J06] ; Users with Excellence Program of Hefei Science Center CAS[2021HSC-UE018] ; Users with Excellence Program of Hefei Science Center CAS[2020HSC-UE011] ; External Cooperation Program of Chinese Academy of Sciences[116134KYSB20180035] ; Science Foundation of Institute of Plasma Physics, Chinese Academy of Sciences[DSJJ-2021-04]
WOS关键词	INTERNAL TRANSPORT BARRIERS ; RECONSTRUCTION
WOS研究方向	Physics
语种	英语
出版者	IOP Publishing Ltd
WOS记录号	WOS:000834591000001
资助机构	National MCF Energy R&D Program of China ; National Natural Science Foundation of China ; Anhui Provincial Natural Science Foundation ; Users with Excellence Program of Hefei Science Center CAS ; External Cooperation Program of Chinese Academy of Sciences ; Science Foundation of Institute of Plasma Physics, Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/132165]
专题	中国科学院合肥物质科学研究院
通讯作者	QIAN, Jinping
作者单位	1.Shenzhen Univ, Adv Energy Res Ctr, Shenzhen 518060, Peoples R China 2.Univ Sci & Technol China, Hefei 230026, Peoples R China 3.Chinese Acad Sci, Hefei Inst Phys Sci, Inst Plasma Phys, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	ZHANG, Jiayuan,QIAN, Jinping,GONG, Xianzu,et al. Impact of core electron temperature on current profile broadening with radio-frequency wave heating and current drive in EAST[J]. PLASMA SCIENCE & TECHNOLOGY,2022,24.
APA	ZHANG, Jiayuan.,QIAN, Jinping.,GONG, Xianzu.,ZHANG, Bin.,WU, Muquan.,...&HU, Yunchan.(2022).Impact of core electron temperature on current profile broadening with radio-frequency wave heating and current drive in EAST.PLASMA SCIENCE & TECHNOLOGY,24.
MLA	ZHANG, Jiayuan,et al."Impact of core electron temperature on current profile broadening with radio-frequency wave heating and current drive in EAST".PLASMA SCIENCE & TECHNOLOGY 24(2022).