Critical currents of Nb/sub 3/Sn wires for the US-DPC coil

Critical currents of Nb/sub 3/Sn wires for the US-DPC coil

The critical current of titanium-alloyed internal-tin, jelly-roll Nb/sub 3/Sn wire for use in the US Demonstration Poloidal Coil (US-DPC) was evaluated. It was confirmed from 14 randomly-selected samples that the critical-current values were uniform and consistent: the noncopper critical-current den...

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Veröffentlicht in:IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States) 1991-03, Vol.27 (2), p.1767-1770
Hauptverfasser: Takayasu, M., Gung, C.Y., Steeves, M.M., Hoenig, M.O., Hale, J.R., Smathers, D.B.
Format: Artikel
Sprache:eng
Schlagworte:
ALLOYS
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
CRITICAL CURRENT
CURRENT DENSITY
Current measurement
CURRENTS
ELECTRIC CURRENTS
Length measurement
Magnetic field measurement
Niobium
RESEARCH PROGRAMS
Strain measurement
SUPERCONDUCTING COILS
SUPERCONDUCTING WIRES
Testing
Tin
TIN ALLOYS
TITANIUM ALLOYS
Voltage
Wires
WIRES 665412 > Superconducting Devices-- (1992-)
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Zusammenfassung:The critical current of titanium-alloyed internal-tin, jelly-roll Nb/sub 3/Sn wire for use in the US Demonstration Poloidal Coil (US-DPC) was evaluated. It was confirmed from 14 randomly-selected samples that the critical-current values were uniform and consistent: the noncopper critical-current density was approximately 700 A/mm/sup 2/ at 10 T and 4.2 K, in agreement with expectations. A 27-strand cable-in-conduit conductor (CICC) using the low-thermal-coefficient-of-expansion superalloy Incoloy 905 yielded a critical current 5-7% below the average value of the single-strand data.
ISSN:0018-9464
1941-0069
DOI:10.1109/20.133533