April 4-6

Abstract Details

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Author: Cole D. Stephens
Requested Type: Poster
Submitted: 2022-03-11 17:57:59

Co-authors: D.R.Hatch, M. Kotschenreuther, S.M.Mahajan

Contact Info:
Institute of Fusion Studies, University of Texas a
1 University Station, C1500
Austin, Texas   78712-0
United States of Ame

Abstract Text:
The goal of this work is to conduct global simulations of the toroidal Alfvén eigenmode (TAE) for pedestal-like using the gyrokinetic code GENE. Toroidal effects inherent in tokamaks and kinetic effects lead to the breakup of the magnetohydrodynamic (MHD) continuum of Alfven waves. Energetic particles produced in a burning plasma can interact can drive the instability of TAEs; in particular, TAEs destabilized by energetic particles can produce energetic particle transport, leading to energetic particle losses and reduced confinement. Moreover, steep spatial gradients characteristic of the pedestal destabilize and drive a host of microturbulent modes. To take into account both effects, we study the destabilization of TAEs in the presence of energetic particles and steep pedestal gradients.