UNITARY MULTI-CELL CONCENTRIC CYLINDRICAL BOX GIRDER COLDMASS APPARATUS FOR OPEN AIR MRI TO AVOID SUPERCONDUCTING MAGNET QUENCH

摘要

An apparatus for open air MRI magnet support comprises a high modulus co-planar multi-cell concentric cylindrical box girder for to support superconductive coil elements with high rigidity. A single unitary coldmass comprises at least three vertical bearing members coupled to an upper multi-cell concentric cylindrical box beam and to a lower multi-cell concentric cylindrical box beam which supports superconductive coil elements against 50-100 ton electromagnetic forces in axial and radial (hoop) directions with trace deformation whereby frictional heating is prevented for to avoid magnet quench.