Bronze route conductors for 1 GHz NMR superconducting magnet

Bronze route conductors for 1 GHz NMR superconducting magnet

Bronze route Nb/sub 3/Sn conductors applied to 1 GHz nuclear magnetic resonance spectrometer have been manufactured. Cu-1Swt%Sn-0.3wt%Ti (15% Sn-bronze) Nb/sub 3/Sn conductors employed in inner coils have shown overall J/sub c/ over 100 A/mm/sup 2/ in 21 T at 1.8 K. Other conductors with a Ta-core a...

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Veröffentlicht in:IEEE transactions on applied superconductivity 2000-03, Vol.10 (1), p.965-970
Hauptverfasser: Hase, T., Murakami, Y., Hayashi, S., Kawata, Y., Kawate, Y., Kiyoshi, T., Wada, H., Miyazaki, T.
Format: Artikel
Sprache:eng
Schlagworte:
Applied sciences
BRONZES
Coils
Conductors
Contamination
ELECTRICAL CONDUCTORS
Electrical engineering. Electrical power engineering
Electromagnets
Exact sciences and technology
MAGNETIC FIELD
Magnetic fields
MAGNETS
Niobium
NMR
Nuclear magnetic resonance
REINFORCEMENT
Solids
Superconducting device characterization, design, and modeling
Superconducting magnets
SUPERCONDUCTIVITY
Tin
Various equipment and components
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Zusammenfassung:Bronze route Nb/sub 3/Sn conductors applied to 1 GHz nuclear magnetic resonance spectrometer have been manufactured. Cu-1Swt%Sn-0.3wt%Ti (15% Sn-bronze) Nb/sub 3/Sn conductors employed in inner coils have shown overall J/sub c/ over 100 A/mm/sup 2/ in 21 T at 1.8 K. Other conductors with a Ta-core as a reinforcement employed in outer coils have presented a 0.2% proof strength of 300 MPa at 4.2 K. It is also reported that J/sub c/ of 15%-bronze conductors is enhanced to match that of the tube-processed Nb/sub 3/Sn conductors in the middle magnetic field region of 12-16 T.
ISSN:1051-8223
1558-2515
DOI:10.1109/77.828392