Three-dimensional stellarator equilibrium as an Ohmic steady state

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Abstract
A stable three‐dimensional stellarator equilibrium can be obtained numerically by a time‐dependent relaxation method using small values of dissipation. The final state is an Ohmic steady state which approaches an Ohmic equilibrium in the limit of small dissipation coefficients. A method to speed up the relaxation process and a method to implement the B⋅∇p=0 condition are described. These methods are applied to obtain three‐dimensional heliac equilibria using the reduced heliac equations.

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