Superconducting Magnet System Concept With Mechanical Energy Transfer in the Magnetic Field

There is an interest in designing superconducting magnet systems working in a persistent current mode. These systems continuously generate magnetic fields with disconnected power sources that work like permanent magnet devices. This paper proposes a magnet-system concept based on direct mechanical energy transfer in the magnetic field. Short circuited superconducting coils do not have current leads and power sources. To pump the mechanical energy in the superconducting coil, a magnetizer is used that is magnetically coupled with the coil. The mechanical removing of the magnetizer from the magnet induces a persistent current in the superconducting coil and generates the magnetic field. The iron-dominated magnet system concept was investigated using OPERA3d code, which confirmed the validity of the proposed approach.