Construction and properties of a 1-m long Nb3Ge-based AC superconducting power transmission cable

Author

Thompson, J.D. ; Maley, M.P. ; Newkirk, L.R. ; Valencia, F.A. ; Carlson, R.V. ; Morgan, G.H.

Author_Institution

Los Alamos Scientific Laboratory, Los Alamos

Volume

17

Issue

1

fYear

1981

fDate

1/1/1981 12:00:00 AM

Firstpage

149

Lastpage

152

Abstract

We have constructed a prototype 1-m long, coaxial ac superconducting power transmission cable utilizing Nb3Ge-clad tapes, Tapes up to 20-m long were produced by pulling 25-μm thick by 0.64-cm wide copper substrates through a continuous coating chemical vapor deposition reactor. Nb3Ge layer thicknesses in the range 3-5 μm were deposited on both surfaces and around the edges of the substrate. A total of 50 m of Nb3Ge-coated tapes was incorporated in this cable, with all tapes exhibiting critical current densities Jc@ 14 K $\\geq 1.8 \\times 10^{6}$ A/cm². The cable was fabricated after the BNL double-helix design. Losses measured in the cable were found to be high, ∼ 1 mW/cm²at 500 rms A/cm, and comparable to losses in similar 1-m Nb3Sn-based cables. We believe that these high losses are not a result of material dependent properties.

Keywords

Superconducting cables; Coatings; Coaxial cables; Copper; Niobium; Power transmission; Prototypes; Superconducting cables; Superconducting epitaxial layers; Superconducting films; Superconducting transmission lines;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.1981.1060924

Filename

1060924