Three-Dimensional Drift Kinetic Response of High Beta Plasmas
in the DIII-D Tokamak
Authors: Z.R. Wang, M.J. Lanctot, Y.Q. Liu, J-K. Park,
and J.E. Menard
Abstract: A quantitative interpretation of the
experimentally measured high pressure plasma response to
externally applied three-dimensional (3D) magnetic field
perturbations, across the no-wall Troyon β
limit, is achieved. The self-consistent inclusion of the drift
kinetic eff ects in magneto-hydrodynamic (MHD) modeling[1]
successfully resolves an outstanding issue of ideal MHD model,
which significantly over-predicts the plasma induced field
ampli fication near the no-wall limit, as compared to experiments.
The model leads to quantitative agreement not only for the
measured field amplitude and toroidal phase, but also for the
measured internal 3D displacement of the plasma. The results can
be important to the prediction of the reliable plasma behavior in
advanced fusion devices, such as ITER [2]. PACS
numbers: 52.25.Dg 52.55.Fa 52.65.Ww
_________________________________________________________________________________________________
Submitted to: Physical Review Letters
_________________________________________________________________________________________________
Download PPPL-5128 (pdf 2.5 MB 8 pp)
_________________________________________________________________________________________________