PURPOSE: To provide a damper for superconducting generator and fabrication method thereof excellent in joint accuracy and dimensional accuracy wherein a sound joint is obtained even if the diameter of damper or the axial length of multi-cylinder structure increases.

CONSTITUTION: In a multi-cylinder damper 1 for superconducting generator having a high strength nonmagnetic metal cylinder 2 disposed on at least one of inner and outer peripheral sides of a highly conductive metal cylinder 3, the highly conductive metal cylinder 3 is constituted of a plurality of short tubular elements 3a, 3b, 3c, 3d split in the axial direction.