Suppression of Alfvén modes on NSTX-U with outboard beam injection

E Fredrickson, E Belova, D Battaglia, R Bell, N Crocker, D Darrow, A Diallo, S Gerhardt, N Gorelenkov, B LeBlanc & M Podesta
In this paper we present data from experiments on NSTX-U where it is shown for the first time that small amounts of high pitch-angle beam ions can strongly suppress the counter-propagating Global Alfvén Eigenmodes (GAE). GAE have been implicated in the redistribution of fast ions and modification of the electron power balance in previous experiments on NSTX. The ability to predict the stability of Alfvén modes, and developing methods to control them, is important for...
1 citation reported since publication in 2017.
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