抄録
We have developed a cryocooled superconducting magnet for the 28 T hybrid magnet. The liquidhelium-free hybrid magnet has been designed to generate the magnetic field of 28 T that can be accomplished bycombining 9 T generation due to the cryocooled superconducting magnet with 19 T generation due to a water-cooledresistive magnet, which is inserted into a room bore of the superconducting magnet. In this work, we developed the 10T cryocooled superconducting magnet with the 360 mm room bore, whose inner coils are wound for employinghigh-strength Nb3Sn wires in consideration of large hoop stress. The liquid helium-free hybrid magnet has reachedthe generation of 27.5 T, which is greatly useful for high magnetic field science. The hybrid magnet also achieved thehigh magnetic-force field (B·dBz/dz) of 4500 T2/m, which could levitate materials of small magnetic susceptibility such as an InSb semiconductor.
