Development of superconductors for applications in high-field, high-current-density magnets for fusion research
The development of large-bore, high-field magnets for fusion energy applications requires a system approach to both magnet and conductor design. At Lawrence Livermore National Laboratory (LLNL), the criteria used to choose superconductors include: strain tolerance, radiation tolerance, heat removal, stability, fabricability, and cost. We report on the performance of industrially produced, prototype, Ti-modified Nb/sub 3/Sn wires developed with LLNL support. Wire performance characteristics evaluated include critical current as a function of magnetic field, temperature, and applied strain. Tests were performed to determine how this performance translates to the performance of a cable-in-conduit conductor system using this wire. An alternative to Nb/sub 3/Sn superconductors is NbN, which is strain and radiation insensitive. We report preliminary efforts to produce multifilamentary NbN conductors by liquid-metal infiltration of NbN-coated, high-strength fibers. In addition, we discuss the fabrication of multifilamentary NbN conductors and their possible impact on magnet design.
- Research Organization:
- Lawrence Livermore National Lab., CA (USA)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 5129951
- Report Number(s):
- UCRL-94264; CONF-860914-3; ON: DE87000522
- Resource Relation:
- Conference: Applied superconductivity conference (ASC '86), Baltimore, MD, USA, 28 Sep 1986; Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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SUPERCONDUCTORS
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CRITICAL CURRENT
INTERMETALLIC COMPOUNDS
NIOBIUM ALLOYS
NIOBIUM NITRIDES
STRAINS
SUPERCONDUCTING MAGNETS
TIN ALLOYS
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CURRENTS
ELECTRIC CURRENTS
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
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MAGNETS
NIOBIUM COMPOUNDS
NITRIDES
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REFRACTORY METAL COMPOUNDS
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