Study and optimization of lower hybrid wave coupling in the experimental advanced superconducting (EAST) tokamak

被引：10

作者：

Kong, E. H. ^{[1
]}

Ding, B. J. ^{[1
]}

Zhang, L. ^{[1
]}

Liu, L. ^{[1
]}

Qin, C. M. ^{[1
]}

Gong, X. Z. ^{[1
]}

Xu, G. S. ^{[1
]}

Zhang, X. J. ^{[1
]}

Wu, Z. G. ^{[1
]}

Wang, H. Q. ^{[1
]}

Li, M. H. ^{[1
]}

Wei, W. ^{[1
]}

Li, Y. C. ^{[1
]}

Xu, L. ^{[1
]}

Wu, J. H. ^{[1
]}

He, Z. X. ^{[1
]}

Shan, J. F. ^{[1
]}

Liu, F. K. ^{[1
]}

Wang, M. ^{[1
]}

Xu, H. D. ^{[1
]}

Zhao, Y. P. ^{[1
]}

Zhao, L. M. ^{[1
]}

Feng, J. Q. ^{[1
]}

Yang, Y. ^{[1
]}

Jia, H. ^{[1
]}

Hu, H. C. ^{[1
]}

Jwang, X. ^{[1
]}

Wu, D. J. ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China

来源：

PLASMA PHYSICS AND CONTROLLED FUSION | 2013年 / 55卷 / 06期

基金：

中国国家自然科学基金;

关键词：

CURRENT DRIVE; IMPURITY PRODUCTION; TORE-SUPRA; EDGE; OPERATION; TRANSPORT; PROGRESS; ANTENNA;

D O I：

10.1088/0741-3335/55/6/065007

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

The results presented in this paper are an extension of our recent (Kong et al 2012 Plasma Phys. Control. Fusion 54 105003) studies on lower hybrid wave (LHW) coupling. By optimizing the shape of the LH grill, the misalignment between the poloidal limiter (PL) and the LH grill is nearly eliminated and the coupling of LHW is improved, especially on the top row, although some discrepancies are still present in the case with low edge density. Density modifications both by LHW and ion cyclotron range of frequency (ICRF) power are studied in EAST. Experimental results show that the edge density modification in front of the LH grill during LHW power depends mainly on the competition between ponderomotive force (PMF) and the ionization of neutral gas, provided by gas puffing and edge recycling. However, the local edge density during ICRF power can be reduced rapidly. Furthermore, such a modification is more obvious with higher ICRF power and the relevant mechanism of density modification by ICRF power can be related to RF sheaths. In addition, another analogous effect of RF sheaths on the coupling of LHW is also investigated, i.e. the density convection induced by E-r x B drift. The changes in LHW coupling associated with different ICRF antennas are discussed and it is shown that in some cases the coupling on the lower rows of the LH grill is improved possibly due to magnetic connection between ICRF antennas and the LH grill. The local coupling of LHW can be improved by gas puffing from gas introduction modules (GIM) on both sides of the launcher, but it is difficult to judge which one is more beneficial due to errors in measurements. Experimental results with gas (D-2) injection during ICRF power clearly show that the coupling of LHW on the upper rows will be first improved by gas injection on the electron side and the coupling on the lower rows will be effectively improved by gas injection on the ion side. The results are consistent with the mapping of field lines.

引用

页数：15

共 50 条

[11] Effect of gas puffing from different side on lower hybrid wave-plasma coupling in experimental advanced superconductive tokamak
Ding, B. J.
Kong, E. H.
Zhang, T.
Ekedahl, A.
Li, M. H.
Zhang, L.
Wei, W.
Li, Y. C.
Wu, J. H.
Xu, G. S.
Zhao, H. L.
Wang, M.
Gong, X. Z.
Shan, J. F.
Liu, F. K.
PHYSICS OF PLASMAS, 2013, 20 (10)
[12] The Experimental Advanced Superconducting Tokamak
Jiangang Li
Yuanxi Wan
the EAST team
Engineering , 2021, (11) : 1523 - 1528
[13] The Experimental Advanced Superconducting Tokamak
Li, Jiangang
Wan, Yuanxi
ENGINEERING, 2021, 7 (11) : 1523 - 1528
[14] The Experimental Advanced Superconducting Tokamak
Jiangang Li
Yuanxi Wan
the EAST team
Engineering, 2021, 7 (11) : 1523 - 1528
[15] Plasma-tungsten interactions in experimental advanced superconducting tokamak (EAST)
Ding, Fang
Luo, Guang-Nan
Chen, Xiahua
Xie, Hai
Ding, Rui
Sang, Chaofeng
Mao, Hongmin
Hu, Zhenhua
Wu, Jing
Sun, Zhen
Wang, Liang
Sun, Youwen
Hu, Jiansheng
TUNGSTEN, 2019, 1 (02) : 122 - 131
[16] China’s “Artificial Sun”: Experimental Advanced Superconducting Tokamak (EAST)
Jianwen Yan
Defeng Kong
Frontiers of Engineering Management, 2025, 12 (2): : 442 - 445
[17] Research on the Tokamak Equipment CAsk (TECA) for Remote Handling in Experimental Advanced Superconducting Tokamak (EAST)
Gao, Lifu
Guo, Weibin
Wu, Baoyuan
Wang, Daqing
Liu, Yuan
Liu, Yi
Zhang, Qiang
Wang, Zengfu
Guo, Liangbin
INTELLIGENT AUTONOMOUS SYSTEMS 14, 2017, 531 : 1049 - 1059
[18] Experimental results of H-mode power threshold with lower hybrid wave heating on the EAST tokamak
Huang, Canbin
Gao, Xiang
Liu, Zixi
Han, Xiang
Zhang, Tao
Wang, Yumin
Zang, Shoubiao
Kong, Defeng
PLASMA PHYSICS AND CONTROLLED FUSION, 2016, 58 (07)
[19] Studies of challenge in lower hybrid current drive capability at high density regime in experimental advanced superconducting tokamak
Ding, B. J.
Li, M. H.
Li, Y. C.
Wang, M.
Liu, F. K.
Shan, J. F.
Li, J. G.
Wan, B. N.
JOURNAL OF PLASMA PHYSICS, 2017, 83 (01)
[20] Characteristics of edge-localized modes in the experimental advanced superconducting tokamak (EAST)
Jiang, M.
Xu, G. S.
Xiao, C.
Guo, H. Y.
Wan, B. N.
Wang, H. Q.
Wang, L.
Zhang, L.
Naulin, V.
Gan, K. F.
Wang, D. S.
Duan, Y. M.
Yan, N.
Liu, P.
Ding, S. Y.
Zhang, W.
Liu, S. C.
PLASMA PHYSICS AND CONTROLLED FUSION, 2012, 54 (09)

← 1 2 3 4 5 →