Suppression of energetic particle driven instabilities with HHFW heating

E. D. Fredrickson; G. Taylor; N. Bertelli; D. S. Darrow; N. Gorelenkov; G. Kramer; D. Liu; N. A. Crocker; S. Kubota; R. White

doi:10.1088/0029-5515/55/1/013012

Suppression of energetic particle driven instabilities with HHFW heating

E. D. Fredrickson, G. Taylor, N. Bertelli, D. S. Darrow, N. Gorelenkov, G. Kramer, D. Liu, N. A. Crocker, S. Kubota, R. White

Research output: Contribution to journal › Article › peer-review

20 Scopus citations

Abstract

In plasmas in the National Spherical Torus Experiment (NSTX) (Ono et al 2000 Nucl. Fusion 40 557) heated with neutral beams, the beam ions typically excite energetic particle modes (or fishbones), and toroidal, global or compressional Alfvén eigenmodes. These modes can redistribute the energetic beam ions, altering the beam driven current profile and the plasma heating profile, or they may affect electron thermal transport or cause losses of the beam ions. In this paper we present experimental results where these instabilities, driven by the super-thermal beam ions, are suppressed with the application of high harmonic fast wave heating.

Original language	English (US)
Article number	013012
Journal	Nuclear Fusion
Volume	55
Issue number	1
DOIs	https://doi.org/10.1088/0029-5515/55/1/013012
State	Published - Jan 1 2015

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
Condensed Matter Physics

Keywords

global Alfvén eigenmode
high harmonic fast wave heating
toroidal Alfvén eigenmode

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10.1088/0029-5515/55/1/013012

Cite this

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title = "Suppression of energetic particle driven instabilities with HHFW heating",

abstract = "In plasmas in the National Spherical Torus Experiment (NSTX) (Ono et al 2000 Nucl. Fusion 40 557) heated with neutral beams, the beam ions typically excite energetic particle modes (or fishbones), and toroidal, global or compressional Alfv{\'e}n eigenmodes. These modes can redistribute the energetic beam ions, altering the beam driven current profile and the plasma heating profile, or they may affect electron thermal transport or cause losses of the beam ions. In this paper we present experimental results where these instabilities, driven by the super-thermal beam ions, are suppressed with the application of high harmonic fast wave heating.",

keywords = "global Alfv{\'e}n eigenmode, high harmonic fast wave heating, toroidal Alfv{\'e}n eigenmode",

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doi = "10.1088/0029-5515/55/1/013012",

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T1 - Suppression of energetic particle driven instabilities with HHFW heating

AU - Fredrickson, E. D.

AU - Taylor, G.

AU - Bertelli, N.

AU - Darrow, D. S.

AU - Gorelenkov, N.

AU - Kramer, G.

AU - Liu, D.

AU - Crocker, N. A.

AU - Kubota, S.

AU - White, R.

PY - 2015/1/1

Y1 - 2015/1/1

N2 - In plasmas in the National Spherical Torus Experiment (NSTX) (Ono et al 2000 Nucl. Fusion 40 557) heated with neutral beams, the beam ions typically excite energetic particle modes (or fishbones), and toroidal, global or compressional Alfvén eigenmodes. These modes can redistribute the energetic beam ions, altering the beam driven current profile and the plasma heating profile, or they may affect electron thermal transport or cause losses of the beam ions. In this paper we present experimental results where these instabilities, driven by the super-thermal beam ions, are suppressed with the application of high harmonic fast wave heating.

AB - In plasmas in the National Spherical Torus Experiment (NSTX) (Ono et al 2000 Nucl. Fusion 40 557) heated with neutral beams, the beam ions typically excite energetic particle modes (or fishbones), and toroidal, global or compressional Alfvén eigenmodes. These modes can redistribute the energetic beam ions, altering the beam driven current profile and the plasma heating profile, or they may affect electron thermal transport or cause losses of the beam ions. In this paper we present experimental results where these instabilities, driven by the super-thermal beam ions, are suppressed with the application of high harmonic fast wave heating.

KW - global Alfvén eigenmode

KW - high harmonic fast wave heating

KW - toroidal Alfvén eigenmode

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DO - 10.1088/0029-5515/55/1/013012

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SN - 0029-5515

VL - 55

JO - Nuclear Fusion

JF - Nuclear Fusion

IS - 1

M1 - 013012

ER -

Suppression of energetic particle driven instabilities with HHFW heating

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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