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Title: Saturation of Alfvén modes in tokamaks

Here, the 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.
Authors:
 [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [2]
  1. Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
  2. Univ. of Colorado, Boulder, CO (United States)
Publication Date:
Report Number(s):
5257
Journal ID: ISSN 0741-3335
Grant/Contract Number:
AC02-09CH11466
Type:
Accepted Manuscript
Journal Name:
Plasma Physics and Controlled Fusion
Additional Journal Information:
Journal Volume: 58; Journal Issue: 11; Journal ID: ISSN 0741-3335
Publisher:
IOP Science
Research Org:
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Alfven modes; tokamaks; saturation; beam particles
OSTI Identifier:
1328851

White, Roscoe, Gorelenkov, Nikolai, Gorelenkova, Marina, Podesta, Mario, Ethier, Stephane, and Chen, Yang. Saturation of Alfvén modes in tokamaks. United States: N. p., Web. doi:10.1088/0741-3335/58/11/115007.
White, Roscoe, Gorelenkov, Nikolai, Gorelenkova, Marina, Podesta, Mario, Ethier, Stephane, & Chen, Yang. Saturation of Alfvén modes in tokamaks. United States. doi:10.1088/0741-3335/58/11/115007.
White, Roscoe, Gorelenkov, Nikolai, Gorelenkova, Marina, Podesta, Mario, Ethier, Stephane, and Chen, Yang. 2016. "Saturation of Alfvén modes in tokamaks". United States. doi:10.1088/0741-3335/58/11/115007. https://www.osti.gov/servlets/purl/1328851.
@article{osti_1328851,
title = {Saturation of Alfvén modes in tokamaks},
author = {White, Roscoe and Gorelenkov, Nikolai and Gorelenkova, Marina and Podesta, Mario and Ethier, Stephane and Chen, Yang},
abstractNote = {Here, the 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.},
doi = {10.1088/0741-3335/58/11/115007},
journal = {Plasma Physics and Controlled Fusion},
number = 11,
volume = 58,
place = {United States},
year = {2016},
month = {9}
}