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Helicon wave coupling optimization and possible parasitic excitation of slow waves near the edge plasma of KSTAR

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Helicon waves are being considered for plasma heating and current drive in KSTAR. While slow mode has a low cutoff density and can propagate from the antenna to the higher magnetic field/density region, helicon waves can have an evanescent layer between the antenna and the edge plasma. Therefore, both helicon and slow waves should be considered in the modeling of the KSTAR helicon experiment. In this proceeding, we perform wave simulations by adopting 1D full-wave code to examine helicon and slow wave excitation from the antenna and subsequent propagation to the plasma core for various values of angle between normal antenna current and static magnetic field. We also discuss the optimized plasma conditions for helicon wave coupling to the plasma core in KSTAR.

Original languageEnglish (US)
Title of host publication23rd Topical Conference on Radiofrequency Power in Plasmas
EditorsPaul T. Bonoli, Robert I. Pinsker, Xiaojie Wang
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735420137
DOIs
StatePublished - Sep 16 2020
Event23rd Topical Conference on Radiofrequency Power in Plasmas - Hefei, China
Duration: May 14 2019May 17 2019

Publication series

NameAIP Conference Proceedings
Volume2254
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference23rd Topical Conference on Radiofrequency Power in Plasmas
Country/TerritoryChina
CityHefei
Period5/14/195/17/19

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy

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