Design of the Local Control Coils at the equatorial gap of the RFX machine

The paper describes a method for the identification of the plasma shape in a toroidal device for the fusion experiments based on magnetic confinement. The method, developed for the RFX machine, makes use of the magnetic measurements and takes into account the electromagnetic effects of a conductive vacuum vessel and of a stabilizing shell. These effects are quite important in “fast” machines such as the RFPs of the present generatio