Numerical calculation of reversed-field pinch plasma equilibrium with external coils

Great progress has been made on plasma parameters in Reversed-Field Pinch (RFP) experiments recently. The next RFP device has been designed and the RFP reactor design has been started. It is necessary to know the equilibrium configurations of plasma for the detail design of a large RFP device and the design of divertor configuration required in a next device. Various analytical models have been proposed for plasma equilibria, however, they may be different from the actual configuration of RFP device. The numerical equilibrium code for axisymmetric RFP plasma is developed, and it can be solved the plasma equilibrium with external field coils. Therefore it is available to design the divertor and plasma control system, and is also useful to analyze the experiments