Presenter Information

J. W. Schumer


Nuclear Engineering and Radiation Science

Research Advisor

Mueller, Gary Edward, 1954-

Advisor's Department

Nuclear Engineering and Radiation Science


Removal of thermalized alpha particles from deuterium- tritium (D-T) fusion plasmas can be accomplished through the use of divertor magnetic fields if the magnetohydrodynamic (MHD) equilibria is well understood [1]. Modifying a MHD variational energy principle for poloidal flux surfaces described by 𝒳 = 𝒳(ρ, θ) results in an inverse Fourier representation of the three-dimensional (3-D) equilibria solution. Application of the 𝒳 = 𝒳(ρ, θ) flux profile allows transformation of the magnetic field into a non-singular coordinate system along the divertor separatrix [2] and therefore, analysis of different divertor schemes. Derivation of the coupled, non-linear differential equations follows [5] except in the contravariant representation of the magnetic field. Theoretical background, formulation of the variational principle, benchmark results, and preliminary computations are presented.

Document Type


Presentation Date

16 Apr 1992