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Fast ion loss diagnostics on DIII-D

  • Author(s): Fisher, RK
  • Boivin, RL
  • Garcia-Munoz, M
  • Heidbrink, WW
  • Pace, DC
  • Van Zeeland, MA
  • Zhu, YB
  • et al.
Creative Commons Attribution 4.0 International Public License
Abstract

New fluctuation and fast ion diagnostics on DIII-D have resulted in the first experimental measurements of the spatial structure of Alfvén eigenmodes (AEs) and their impact on the radial profile of confined beam ions. This paper describes fast ion loss diagnostics designed to help understand how AE's and other instabilities perturb the fast ion orbits and degrade their confinement.

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