Hall MHD Equilibrium of Accelerated Compact Toroids

POSTER

Abstract

We examine the structure and dynamics of the compact toroid's magnetic field. The compact toroid is dramatically accelerated by a large rail-gun Lorentz force density equal to $\mathbf{j \times B}$. We use magnetic data from the Compact Toroid Injection Experiment to answer the question of exactly where in the system $\mathbf{j \times B}$ has nonzero values, and to what extent we can apply the standard model of force-free equilibrium. In particular we present a method of analysis of the magnetic field probe signals that allows direct comparison to the predictions of the Woltjer-Taylor force-free model and Turner's generalization of magnetic relaxation in the presence of a non-zero Hall term and fluid vorticity.

*This work supported by U.S. DOE Grant DE-FG02-03ER54732.

Authors

  • S.J. Howard

  • D.Q. Hwang

  • R.D. Horton

  • R.W. Evans

  • S.J. Brockington

    • University of California, Davis