Saturation of Alfvén modes in tokamaks

Roscoe White; Nikolai Gorelenkov; Marina Gorelenkova; Mario Podesta; Stephane Ethier; Yang Chen

doi:10.1088/0741-3335/58/11/115007

Saturation of Alfvén modes in tokamaks

Roscoe White, Nikolai Gorelenkov, Marina Gorelenkova, Mario Podesta, Stephane Ethier, Yang Chen

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

11 Scopus citations

Abstract

Growth of Alfvén modes driven unstable by a distribution of high energy particles up to saturation is investigated with a guiding center code, using numerical eigenfunctions produced by linear theory and a numerical high energy particle distribution, in order to make detailed comparison with experiment and with models for saturation amplitudes and the modification of beam profiles. Two innovations are introduced. First, a very noise free means of obtaining the mode-particle energy and momentum transfer is introduced, and secondly, a spline representation of the actual beam particle distribution is used.

Original language	English (US)
Article number	115007
Journal	Plasma Physics and Controlled Fusion
Volume	58
Issue number	11
DOIs	https://doi.org/10.1088/0741-3335/58/11/115007
State	Published - Sep 20 2016

All Science Journal Classification (ASJC) codes

Nuclear Energy and Engineering
Condensed Matter Physics

Keywords

Alfven modes
beam particles
saturation
tokamaks

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10.1088/0741-3335/58/11/115007

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title = "Saturation of Alfv{\'e}n modes in tokamaks",

abstract = "Growth of Alfv{\'e}n modes driven unstable by a distribution of high energy particles up to saturation is investigated with a guiding center code, using numerical eigenfunctions produced by linear theory and a numerical high energy particle distribution, in order to make detailed comparison with experiment and with models for saturation amplitudes and the modification of beam profiles. Two innovations are introduced. First, a very noise free means of obtaining the mode-particle energy and momentum transfer is introduced, and secondly, a spline representation of the actual beam particle distribution is used.",

keywords = "Alfven modes, beam particles, saturation, tokamaks",

author = "Roscoe White and Nikolai Gorelenkov and Marina Gorelenkova and Mario Podesta and Stephane Ethier and Yang Chen",

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T1 - Saturation of Alfvén modes in tokamaks

AU - White, Roscoe

AU - Gorelenkov, Nikolai

AU - Gorelenkova, Marina

AU - Podesta, Mario

AU - Ethier, Stephane

AU - Chen, Yang

PY - 2016/9/20

Y1 - 2016/9/20

N2 - Growth of Alfvén modes driven unstable by a distribution of high energy particles up to saturation is investigated with a guiding center code, using numerical eigenfunctions produced by linear theory and a numerical high energy particle distribution, in order to make detailed comparison with experiment and with models for saturation amplitudes and the modification of beam profiles. Two innovations are introduced. First, a very noise free means of obtaining the mode-particle energy and momentum transfer is introduced, and secondly, a spline representation of the actual beam particle distribution is used.

AB - Growth of Alfvén modes driven unstable by a distribution of high energy particles up to saturation is investigated with a guiding center code, using numerical eigenfunctions produced by linear theory and a numerical high energy particle distribution, in order to make detailed comparison with experiment and with models for saturation amplitudes and the modification of beam profiles. Two innovations are introduced. First, a very noise free means of obtaining the mode-particle energy and momentum transfer is introduced, and secondly, a spline representation of the actual beam particle distribution is used.

KW - Alfven modes

KW - beam particles

KW - saturation

KW - tokamaks

UR - https://www.scopus.com/pages/publications/84993958669

UR - https://www.scopus.com/inward/citedby.url?scp=84993958669&partnerID=8YFLogxK

U2 - 10.1088/0741-3335/58/11/115007

DO - 10.1088/0741-3335/58/11/115007

M3 - Article

AN - SCOPUS:84993958669

SN - 0741-3335

VL - 58

JO - Plasma Physics and Controlled Fusion

JF - Plasma Physics and Controlled Fusion

IS - 11

M1 - 115007

ER -

Saturation of Alfvén modes in tokamaks

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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