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.
authors.affiliation: National Fusion Research Institute, Daejeon, Korea. ymjeon@nfri.re.kr
authors.forename: Y M
authors.initials: YM
authors.lastname: Jeon
authors.forename: J-K
authors.initials: JK
authors.lastname: Park
authors.forename: S W
authors.initials: SW
authors.lastname: Yoon
authors.forename: W H
authors.initials: WH
authors.lastname: Ko
authors.forename: S G
authors.initials: SG
authors.lastname: Lee
authors.forename: K D
authors.initials: KD
authors.lastname: Lee
authors.forename: G S
authors.initials: GS
authors.lastname: Yun
authors.forename: Y U
authors.initials: YU
authors.lastname: Nam
authors.forename: W C
authors.initials: WC
authors.lastname: Kim
authors.forename: Jong-Gu
authors.initials: JG
authors.lastname: Kwak
authors.forename: K S
authors.initials: KS
authors.lastname: Lee
authors.forename: H K
authors.initials: HK
authors.lastname: Kim
authors.forename: H L
authors.initials: HL
authors.lastname: Yang