Suppression of edge localized modes in high-confinement KSTAR plasmas by nonaxisymmetric magnetic perturbations

Y. M. Jeon; J. K. Park; S. W. Yoon; W. H. Ko; S. G. Lee; K. D. Lee; G. S. Yun; Y. U. Nam; W. C. Kim; Jong Gu Kwak; K. S. Lee; H. K. Kim; H. L. Yang

doi:10.1103/PhysRevLett.109.035004

Suppression of edge localized modes in high-confinement KSTAR plasmas by nonaxisymmetric magnetic perturbations

Y. M. Jeon, J. K. Park, S. W. Yoon, W. H. Ko, S. G. Lee, K. D. Lee, G. S. Yun, Y. U. Nam, W. C. Kim, Jong Gu Kwak, K. S. Lee, H. K. Kim, H. L. Yang

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Abstract

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.

Original language	English (US)
Article number	035004
Journal	Physical review letters
Volume	109
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevLett.109.035004
State	Published - Jul 20 2012

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1103/PhysRevLett.109.035004

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Jeon, Y. M., Park, J. K., Yoon, S. W., Ko, W. H., Lee, S. G., Lee, K. D., Yun, G. S., Nam, Y. U., Kim, W. C., Kwak, J. G., Lee, K. S., Kim, H. K., & Yang, H. L. (2012). Suppression of edge localized modes in high-confinement KSTAR plasmas by nonaxisymmetric magnetic perturbations. Physical review letters, 109(3), Article 035004. https://doi.org/10.1103/PhysRevLett.109.035004

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title = "Suppression of edge localized modes in high-confinement KSTAR plasmas by nonaxisymmetric magnetic perturbations",

abstract = "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.",

author = "Jeon, \{Y. M.\} and Park, \{J. K.\} and Yoon, \{S. W.\} and Ko, \{W. H.\} and Lee, \{S. G.\} and Lee, \{K. D.\} and Yun, \{G. S.\} and Nam, \{Y. U.\} and Kim, \{W. C.\} and Kwak, \{Jong Gu\} and Lee, \{K. S.\} and Kim, \{H. K.\} and Yang, \{H. L.\}",

year = "2012",

month = jul,

day = "20",

doi = "10.1103/PhysRevLett.109.035004",

language = "English (US)",

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T1 - Suppression of edge localized modes in high-confinement KSTAR plasmas by nonaxisymmetric magnetic perturbations

AU - Jeon, Y. M.

AU - Park, J. K.

AU - Yoon, S. W.

AU - Ko, W. H.

AU - Lee, S. G.

AU - Lee, K. D.

AU - Yun, G. S.

AU - Nam, Y. U.

AU - Kim, W. C.

AU - Kwak, Jong Gu

AU - Lee, K. S.

AU - Kim, H. K.

AU - Yang, H. L.

PY - 2012/7/20

Y1 - 2012/7/20

N2 - 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.

AB - 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.

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JO - Physical review letters

JF - Physical review letters

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Suppression of edge localized modes in high-confinement KSTAR plasmas by nonaxisymmetric magnetic perturbations

Abstract

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