title: Rotational resonance of nonaxisymmetric magnetic braking in the KSTAR tokamak.
abstract: One of the important rotational resonances in nonaxisymmetric neoclassical transport has been experimentally validated in the KSTAR tokamak by applying highly nonresonant n=1 magnetic perturbations to rapidly rotating plasmas. These so-called bounce-harmonic resonances are expected to occur in the presence of magnetic braking perturbations when the toroidal rotation is fast enough to resonate with periodic parallel motions of trapped particles. The predicted and observed resonant peak along with the toroidal rotation implies that the toroidal rotation in tokamaks can be controlled naturally in favorable conditions to stability, using nonaxisymmetric magnetic perturbations.
authors.affiliation: Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543, USA.
authors.forename: J-K
authors.initials: JK
authors.lastname: Park
authors.forename: Y M
authors.initials: YM
authors.lastname: Jeon
authors.forename: J E
authors.initials: JE
authors.lastname: Menard
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authors.forename: S G
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authors.lastname: Lee
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authors.lastname: Bae
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authors.lastname: Joung
authors.forename: K-I
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authors.lastname: You
authors.forename: K-D
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authors.forename: N
authors.initials: N
authors.lastname: Logan
authors.forename: K
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authors.lastname: Kim
authors.forename: J S
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authors.lastname: Ko
authors.forename: S W
authors.initials: SW
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authors.lastname: Kim
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authors.initials: WC
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authors.forename: Y-K
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authors.lastname: Oh
authors.forename: J-G
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authors.lastname: Kwak