Alpha-channeling simulation experiment in the DIII-D tokamak
- Author(s): Wong, KL
- Budny, R
- Nazikian, R
- Petty, CC
- Greenfield, CM
- Heidbrink, WW
- Ruskov, E
- et al.
Published Web Locationhttps://doi.org/10.1103/PhysRevLett.93.085002
An experiment of alpha-channeling simulation in the D-III-D tokamak was discussed. It was found that Alfvén instabilities can reduce the central magnetic shear via redistribution of energetic ions. It was shown that Alfvén modes alone selectively move some α particles to form a transport barrier, in addition to electron heating. It was suggested that they can susgtain a steady state internal transport barrier as demonstrated in the DIII-D tokamak experiment.
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