LA-UR--80-2959

Conference ·

OSTI ID:6989968

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

A prototype 1-m long, coaxial ac superconducting power transmission cable utilizing Nb/sub 3/Ge-clad tapes was constructed. Tapes up to 20-m long were produced by pulling 25-..mu..m thick by 0.64-cm wide copper substrates through a continuous coating chemical vapor deposition reactor. Nb/sub 3/Ge layer thicknesses in the range 3 to 5 ..mu..m were deposited on both surfaces and around the edges of the substrate. A total of 50 m of Nb/sub 3/Ge-coated tapes was incorporated in this cable, with all tapes exhibiting critical current densities J/sub c/ at 14/sup 0/K greater than or equal to 1.8 x 10/sup 6/ A/cm/sup 2/. The cable was fabricated after the BNL double-helix design. Losses measured in the cable were found to be high, approx. 1 mW/cm/sup 2/ at 500 rms A/cm, and comparable to losses in similar 1-m Nb/sub 3/Sn-based cables. These high losses are not believed to be a result of material dependent properties.

• Research Organization: Los Alamos Scientific Lab., NM (USA)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 6989968
• Report Number(s): CONF-800980-28
• Country of Publication: United States
• Language: English

Related Subjects

200303* -- Power Transmission & Distribution-- Superconducting & Cryogenic Systems-- (-1989)
24 POWER TRANSMISSION AND DISTRIBUTION
ALLOYS
CABLES
CONDUCTOR DEVICES
ELECTRIC CABLES
ELECTRICAL EQUIPMENT
EQUIPMENT
FABRICATION
GERMANIUM ALLOYS
LAYERS
LOSSES
NIOBIUM ALLOYS
NIOBIUM BASE ALLOYS
POWER TRANSMISSION LINES
SUPERCONDUCTING CABLES