Result of Magnetic Shielding Experiment about Flow of Flux

Abstract

Magnetic shielding is an important task for superconducting magnetically levitated train. We previously proposed optimal design method of magnetic shielding for minimazation of magnetic shield weight. In this paper, we report the test result of the magnetic shielding facility based on the optimal design method. We can atain magnetic flux density less than 2mT in the region surrounded by magnetic shield, whose weight is lighter than any other test facility constructed previously.