The intrinsic magneto-resistance of cryogenic joints

Author

Parker, J.H., Jr. ; Krefta, M.P.

Author_Institution

Westinghouse Sci. & Technol. Center, Pittsburgh, PA, USA

Volume

7

Issue

2

fYear

1997

fDate

6/1/1997 12:00:00 AM

Firstpage

820

Lastpage

823

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;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.614629

Filename

614629