Monitoring and Protection Method of a REBCO Magnet Designed for Electromagnetic Vibration Tests

Abstract

REBCO (Rare-Earth Barium Copper Oxide) is a high temperature superconducting material and is suitable for use in on-board maglev train magnets because of its high current density in a high magnetic field. A real-scale REBCO coil was fabricated and its basic performance confirmed. As a next step in this research, electromagnetic vibration tests on ground coils using real-scale REBCO coils are planned. Since electromagnetic vibration tests usually take several weeks to complete, a monitoring and protection system for the REBCO magnet is required. A high-sensitive coil voltage detection method was evaluated.