Calculation of magnetic field strength for coil system designed to free from magnetic force and to confine the high β plasma

Abstract

The coil system designed to free from the magnetic force and to confine the high β plasma is proposed. We carry out the calculation of the magnetic field for the proposed coil by using the Biot-Savart law. It is noted that no or very weak magnetic fields are appeared in the central region of the proposed coil, while the strong magnetic field localizes at the outside of this region, being satisfied the requirement of confining the high β plasma.
The simplified model is considered in order to reduce the cpu time for the computation. From the results of the computation, it is shown that the proposed coil is able to be replaced by the simplified model.