The AURORA is a compact synchrotron light source optimaized for X-ray lithography. The system consists of 150MeV racetrack microtron as an injector, a compact electron storage ring, and light beam lines. The superconducting magnet system is composed of a cylindrical single-body magnet and a helium refrigeration system. The magnet generates Bz=4.34T at the 650MeV storage energy. The diameter of the central orbit is 1m. Iron york and poles are used for shielding the magnetic field, reducing the electromagnetic force between superconducting coils, and making the magnetic field distribution adequate for beam injection and storage.
