Niobium tin sheet for superconducting magnets

摘要

A method to provide large sheets of Nb3Sn superconducting material suitable for use as a superconducting gradient shield in a magnetic resonance imaging system magnet by heating (9) an anodized Nb-1Zr sheet (222) at a heating position (36), tin dipping and reacting the sheet (322) in a crucible (33), and subsequently quenching the sheet (22) in a purged atmosphere (17) to provide an improved time constant and lower Jc heating when used in a superconducting magnetic field.