Rotating magnetic field generation device, magnetic refrigeration device, and hydrogen liquefaction device

A rotating magnetic field generation device comprising:

• a magnetic field generating unit including
• a plurality of disks, each including a plurality of magnets that are arranged circumferentially on both a top side and a bottom side of each of the plurality of disks,
• a gap between each of the plurality of disks in an axial direction of the rotating magnetic field generation device forming a magnetic field working space, wherein the plurality of disks are stacked such that the plurality of magnets face each other from one disk to another disk across the gap in the axial direction, and
• a shaft to which the plurality of disks are fixed, the shaft being installed at a central axis of the plurality of disks;
• an adiabatic vacuum vessel in which the magnetic field generating unit is installed;
• and
• a drive mechanism that is installed in a room temperature region and rotates the shaft.