High–Beta Relaxed Plasma Confinement in Field Reversed Configurations
POSTER
Abstract
Plasmas with reversed magnetic fields and nonuniform rotational flows are ubiquitous in nature. In the MFE program these plasmas are created in Field-Reversed Confinement [FRC] systems1 Stability conditions are derived the dynamics formulated for models of the Norman FRC machine2. Cylindrical symmetric Grad-Sharfranov3 plasmas p ~ B2/2𝛍o are derived and simulated. High beta–hot ion FRC plasmas dynamics with differential rotation expressed with Poisson brackets for four fields describing both field line bending and the FLR stabilization. The simulations produce high ion temperature deuterium plasmas with a magnetic separatrix between the closed FRC and open SOL plasmas components.
1L. Schmitz, et al. Suppressed ion-scale turbulence in a hot high-beta plasma, Nature Communication, 2016 [7:13860 | DOI: 10.1038/ncomms13860]
2C. Copenhaver, Axisymmetric toroidal equilibrium with plasma flow, Phys Fluids 1983.
3A. J. Cerfon and P. Freidberg, Phys Plasmas 17, 032502, 2010.
*Supported Dept. of Energy DE-FG02-04ER54742 to Institute for Fusion Studies. The simulations performed by Lee Leonard and Greg Foss at Texas Advanced Computer Center.
Presenters
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Philip J Morrison
- Univ of Texas, Austin