Title :
The intrinsic magneto-resistance of cryogenic joints
Author :
Parker, J.H., Jr. ; Krefta, M.P.
Author_Institution :
Westinghouse Sci. & Technol. Center, Pittsburgh, PA, USA
fDate :
6/1/1997 12:00:00 AM
Abstract :
An intrinsic joint resistance can arise due to circulating Hall currents flowing across the joint interface between dissimilar metal conductors carrying transport current in a magnetic field. Calculations have been performed to determine this resistance for a number of generic joint geometries, including butt, sandwich, and lap, as a function of the magnetic field strength for Cu-Al and Cu-SC pairs. This type of joint resistance may play a role in the coupling loss and stability of filamentary superconductors. The results are discussed in terms of their implication for superconducting coil and conductor design.
Keywords :
Hall effect; magnetoresistance; multifilamentary superconductors; superconducting coils; Cu-Al; butt joint; coupling loss; cryogenic joint; filamentary superconductor; interfacial Hall current; intrinsic magnetoresistance; lap joint; magnetic field; metal conductor; sandwich joint; stability; superconducting coil; transport current; Conducting materials; Conductors; Copper; Cryogenics; Electric resistance; Magnetic fields; Stability; Superconducting magnets; Superconducting materials; Superconductivity;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
