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

文献类型：期刊论文

作者ZHANG, Jiayuan2,3; QIAN, Jinping3; GONG, Xianzu3; ZHANG, Bin3; WU, Muquan1; LI, Miaohui3; CHEN, Jiale3; ZANG, Qing3; LIN, Shiyao3; CHAO, Yan2,3
刊名PLASMA SCIENCE & TECHNOLOGY
出版日期2022-10-01
卷号24
ISSN号1009-0630
关键词current profile broadening equilibrium reconstruction core electron temperature lower hybrid wave
DOI10.1088/2058-6272/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.
WOS关键词INTERNAL TRANSPORT BARRIERS ; RECONSTRUCTION
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
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).

入库方式： OAI收割

来源：合肥物质科学研究院

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