Observation of ELM-free H-mode in the HL-2A tokamak

被引：10

作者：

Zhong, W. L. ^{[1
]}

Zou, X. L. ^{[2
]}

Duan, X. R. ^{[1
]}

Ding, X. T. ^{[1
]}

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

Shi, Z. B. ^{[1
]}

Song, X. M. ^{[1
]}

Xiao, W. W. ^{[1
,3
]}

Xia, F. ^{[1
]}

Huang, X. L. ^{[1
]}

Dong, Y. B. ^{[1
]}

Liu, Z. T. ^{[1
]}

Ji, X. Q. ^{[1
]}

Cheng, J. ^{[1
]}

Zhou, Y. ^{[1
]}

Chen, W. ^{[1
]}

Yu, D. L. ^{[1
]}

Han, X. Y. ^{[1
]}

Cui, Z. Y. ^{[1
]}

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

Xu, Y. ^{[1
]}

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

Lei, G. J. ^{[1
]}

Cao, J. Y. ^{[1
]}

Rao, J. ^{[1
]}

Zhou, J. ^{[1
]}

Huang, M. ^{[1
]}

Huang, Y. ^{[1
]}

Chen, L. Y. ^{[1
]}

Liu, Yi ^{[1
]}

Yan, L. W. ^{[1
]}

Yang, Q. W. ^{[1
]}

Liu, Yong ^{[1
]}

机构：

[1] Southwestern Inst Phys, Chengdu 610041, Peoples R China

[2] CEA, IRFM, F-13108 St Paul Les Durance, France

[3] Natl Fus Res Inst, WCI Ctr Fus Theory, Taejon, South Korea

来源：

NUCLEAR FUSION | 2013年 / 53卷 / 08期

关键词：

DIII-D; CONFINEMENT; TURBULENCE; STABILITY; PLASMAS; REGIME;

D O I：

10.1088/0029-5515/53/8/083030

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：

For the first time, edge-localized mode (ELM)-free H-mode was realized in the HL-2A tokamak by using electron cyclotron resonance heating and co-current neutral beam injection (NBI) heating. This ELM-free H-mode is associated with the formation of edge particle transport barrier, an increase in density peaking and a significant decrease in edge turbulence. During the stationary ELM-free phase, an edge magnetohydrodynamic mode is identified, which has similar characteristics to an edge harmonic oscillation (EHO), as observed in other tokamaks. This EHO-like mode enhances edge particle transport, and propagates poloidally in the electron diamagnetic drift direction and toroidally in the same direction as the plasma current and NBI. A detailed analysis of this mode and the EHO-ELM transition is presented in this paper.

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页数：8

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