Suppression of Edge Localized Modes in High-Confinement KSTAR Plasmas by Nonaxisymmetric Magnetic Perturbations

被引：319

作者：

Jeon, Y. M. ^{[1
]}

Park, J. -K. ^{[2
]}

Yoon, S. W. ^{[1
]}

Ko, W. H. ^{[1
]}

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

Lee, K. D. ^{[1
]}

Yun, G. S. ^{[3
]}

Nam, Y. U. ^{[1
]}

Kim, W. C. ^{[1
]}

Kwak, Jong-Gu ^{[1
]}

Lee, K. S. ^{[1
]}

Kim, H. K. ^{[1
]}

Yang, H. L. ^{[1
]}

机构：

[1] Natl Fus Res Inst, Taejon, South Korea

[2] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA

[3] Pohang Univ Sci & Technol, Pohang, South Korea

来源：

PHYSICAL REVIEW LETTERS | 2012年 / 109卷 / 03期

关键词：

D O I：

10.1103/PhysRevLett.109.035004

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Edge localized modes (ELMs) in high-confinement mode plasmas were completely suppressed in KSTAR by applying n = 1 nonaxisymmetric magnetic perturbations. Initially, the ELMs were intensified with a reduction of frequency, but completely suppressed later. The electron density had an initial 10% decrease followed by a gradual increase as ELMs were suppressed. Interesting phenomena such as a saturated evolution of edge T-e and broadband changes of magnetic fluctuations were observed, suggesting the change of edge transport by the applied magnetic perturbations.

引用

页数：5

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