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Bursting toroidal Alfven eigenmodes in KSTAR plasmas

Hole, Matthew; Qu, Zhisong; Layden, Brett; Michael, Clive; Woo, M H; Bak, J G; Kim, J; Hezaveh Hesar Maskan, Hooman

Description

We report on observations of bursty mode activity during early neutral beam heating in KSTAR plasmas, before current flat top while the q profile is still evolving. The magnitude of the activity increases with early beam heating, and reduces with the addition of resonant magnetic perturbation magnetic field coils. A mode analysis yields a toroidal mode number of n = 2. The mode is observed to be downward chirping in frequency, and exists for the duration of the slowing-down of the beam....[Show more]

CollectionsANU Research Publications
Date published: 2019
Type: Journal article
URI: http://hdl.handle.net/1885/212623
Source: Plasma Physics and Controlled Fusion
DOI: 10.1088/1361-6587/aaf40b

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