J.D. King E.J. Strait N.M. Ferraro J.M. Hanson S.R. Haskey M.J. Lanctot Y.Q. Liu N.Logan C. Paz-Soldan D. Shiraki A.D. Turnbull
Detailed measurements of the plasmas response to applied magnetic perturbations provide experimental evidence that the form of three-dimensional (3D) tokamak equilibria, with toroidal mode number n = 1, is determined by multiple stable kink modes at high-pressure. For pressures greater than the ideal magnetohydrodynamic (MHD) stability limit, as …
Preprint PublishedYueqiang Liu I. T. Chapman J. P. Graves G. Z. Hao Z. R. Wang J. E. Menard M. Okabayashi E. J. Strait A. Turnbull
A non-perturbative magnetohydrodynamic-kinetic hybrid formulation is developed and implemented into the MARS-K code [Liu et al., Phys. Plasmas 15, 112503 (2008)] that takes into account the anisotropy and asymmetry [Graves et al., Nature Commun. 3, 624 (2012)] of the equilibrium distribution of energetic particles (EPs) in particle pitch angle spac…
PublishedA. D. Turnbull N. M. Ferraro V. A. Izzo E. A. Lazarus J.-K. Park W. A. Cooper S. P. Hirshman L. L. Lao M. J. Lanctot S. Lazerson Y. Q. Liu A. Reiman F. Turco
With the installation of non-axisymmetric coil systems on major tokamaks for the purpose of studying the prospects of ELM-free operation, understanding the plasma response to the applied fields is a crucial issue. Application of different response models, using standard tools, to DIII-D discharges with applied non-axisymmetric fields from internal …
PublishedM.J. Lanctot H. Reimerdes A.M. Garofalo M.S. Chu J. M. Hanson Y.Q. Liu G.A. Navratil I.N. Bogatu Y. In G.L. Jackson R.J. La Haye M. Okayabashi J.-K. Park M.J. Schaffer O. Schmitz E.J. Strait A.D. Turnbull
A detailed experiment-theory comparison reveals that linear ideal MHD theory is in quantitative agreement with external magnetic and internal soft x-ray measurements of the plasma response to externally applied non-axisymmetric fields over a broad range of beta and rotation. This result represents a significant step toward the goal of advancing the…
Published