A tandem mirror reactor configuration with wall stabilization of the central cell and octopole stabilization of the end cell has been studied. The critical beta for wall stabilization of the central cell is reduced by the use of rippled magnetic fields. Consideration of erosion and heating of the first wall by alpha particles suggests that wall-to-plasma radii ratios of 1.15 are practical. Wall stabilization of the central cell reduces the required mantle beta in the end cell and improves the reactor potential of the octopole stabilized configuration. The properties of the operation of a typical small (overall length 85 m) reactor with 1250 MW of fusion power, a wall load of 4.4 MW·m−2 and a Q of 27 have been computed.
Damage study for various materials at the first wall of a magnetic fusion reactor using protective liquid wall
Wall stabilization of high-beta anisotropic plasmas in an axisymmetric mirror trap