Hyper Tech Research, Inc.

David W Doll

Michael J Tomsic

A device and method for making a persistent joint allowing end terminations of superconducting MgBwire to be joined with a superconducting bridge. Superconducting electromagnetic coils may be joined in series or joining of coil assemblies to current sources and the two ends of a persistent switch. The device includes wire filaments with end preparation exposing reacted MgB, inserted into a block and surrounded with Mg+B and/or MgBin powder, solid, slurry or sol-gel form and subsequently reacted to establish a bridge of superconducting MgBelectrically connecting the superconducting MgBwires. Autonomous operation of the superconducting background magnet coils in magnetic resonance imaging (MRI) and nuclear magnetic resonance (NMR) devices are allowed, or similar devices where autonomous operation of an MgBbased superconducting magnet is required. The low resistant joint will also be beneficial for other superconducting applications such as fault current limiters, motors, generators, etc.

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Columbus, OH, United States of America

David W Doll