Engineer assembling a complete balanced set of high temperature superconducting (HTS) magnets, Demo4, shaped in a tokamak configuration for magnetic research into Nuclear Fusion. 照片檔

Demo4 is a complete balanced set of high temperature superconducting (HTS) magnets shaped in a tokamak configuration. It will have an incredible 12 million amps of electricity running through its central column when operationalDemo4 consists of 44 individual magnetic coils using 38 kilometres of 12mm wide high temperature superconducting (HTS) tape, which carries currents with zero electrical resistance and requires five times less cooling power than traditional superconducting materials. Strong magnetic fields are generated by passing large electrical currents through arrays of electromagnet coils that will surround the plasma in future power plants. The magnets were wound with precision from state-of-the-art HTS tapes, which are multi-layered conductors with a crucial internal coating of ‘rare earth barium copper oxide’ (REBCO) superconducting material.