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Title: Saturation of Alfven modes in tokamaks
Contributors: White, R
Gorelenkov, N.
Gorelenkova, M.
Podesta, M.
Ethier, S.
Chen, Y.
U. S. Department of Energy contract number DE-AC02-09CH11466
Keywords: TAE modes
Issue Date: Nov-2016
Publisher: Princeton Plasma Physics Laboratory, Princeton University
Related Publication: Plasma Physics and Controlled Fusion, Vol. 58, page 115007 (November 2016)
Abstract: Growth of Alfven 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.
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