Development of a Cryocooled 34 T-8 MW Hybrid Magnet and Application in Magneto-science

Abstract

A new water-cooled magnet for a cryocooled hybrid magnet was designed by fully utilizing an 8 MW electric-power source and the cooling system installed at the High Field Laboratory for Superconducting Materials, Tohoku University. The magnet consists of four axial water-cooled Bitter coils capable of producing 22.8 T using 7.5 MW in a room-temperature bore of 16 mm. The cryocooled hybrid magnet can generate 33.8 T with a backup field of 11.0 T. The magnetic-force field, B(∂B/∂z), reaches approximately -11000 T²/m at the maximum central field, which is sufficient to levitate metals such as gold or semiconductors including silicon.