Fine filament NbTi conductors for the SSC
In support of the SSC magnet development program, IGC-Advanced Superconductors, Inc. has produced over 4500 lbs of fine filament wire. Since the SSC would require a large volume production at the most economical price, billets measuring 12'' dia have been used for this prototype wire production. Both inner and outer grades of wire have been processed with NbTi filament diameters of 5 to 9 micrometers, depending on the magnet design requirements. The increase in billet diameter from 10'' in the past to 12'' resulted in an improved critical current density approaching 3000 A/mm/sup 2/ at 5T. This paper reports on the electrical properties (J/sub c/ and n value) and mechanical properties (tensile, springback and bend characteristics) of the strand. Piece length distribution obtained for various production billets is presented. The performance of cables fabricated from the strand is discussed. Specifically, the critical current degradation due to cabling and residual twist in the cable is addressed.
- Research Organization:
- IGC/Advanced Superconductors, Inc., 1875 Thomaston Avenue, Waterbury, CT (US); Lawrence Berkeley Lab., CA (USA)
- OSTI ID:
- 5883630
- Report Number(s):
- CONF-880812-
- Journal Information:
- IEEE Trans. Magn.; (United States), Journal Name: IEEE Trans. Magn.; (United States) Vol. 25:2; ISSN IEMGA
- Country of Publication:
- United States
- Language:
- English
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71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALLOYS
CABLES
CONDUCTOR DEVICES
CRITICAL CURRENT
CURRENT DENSITY
CURRENTS
DESIGN
ECONOMICS
ELECTRIC CABLES
ELECTRIC CONDUCTIVITY
ELECTRIC CURRENTS
ELECTRICAL EQUIPMENT
ELECTRICAL PROPERTIES
ELECTROMAGNETS
EQUIPMENT
MAGNETS
MECHANICAL PROPERTIES
NIOBIUM ALLOYS
PHYSICAL PROPERTIES
STORAGE RINGS
SUPERCONDUCTING CABLES
SUPERCONDUCTING DEVICES
SUPERCONDUCTING MAGNETS
SUPERCONDUCTING SUPER COLLIDER
SUPERCONDUCTING WIRES
SUPERCONDUCTIVITY
TITANIUM ALLOYS
WIRES