Abstract
The monitoring superconducting magnet by its acoustic emission has been found effective during the operation of the magnet. We have observed various AE from the magnet. Sources of AE generation are roughly classified and ordered according to their strength of AE, i.e., fracture of conductor destruction, conductor movement, fracture of support material, magnetization of conductor and S/N transition. Here, acoustic emission during the magnetization of the conductor and the magnet are mainly explained by showing the experimental results and theoretical discussions. The AE due to magnetization has been found to be related to the magnetic flux movement by Lorentz force.
