The Influence of the Matrix Movement in a High Gradient Magnetic Filter on the Critical Temperature Distribution in the Superconducting Coil

摘要

The subject of the paper is an analysis of dynamical state of work of the High Gradient Magnetic Separator. HGMS requires high values of the magnetic field in big spaces. Superconducting coils are used for that field excitement. Separator works in two states. First state - static - magnetic filtration, and dynamic exchanging the matrix. Matrix is made of ferromagnetic wool. So it influences on the field excited by the coil. During dynamical state, the matrix is taking out the filter and it affects on the field distribution in the coil windings. Unfortunately the level of temperature required to maintain the superconductivity properties locally might be dramatically lowered and it could be the cause of the serious accidents. Magnet designers have to take into consideration also the dynamical state of the magnetic filter.