Comparative study of NbTi strands developed for ITER PF coils

Comparative study of NbTi strands developed for ITER PF coils

Last year Bochvar Institute (VNIINM) has developed and produced several NbTi strands of various layouts intended for the cables of ITER PF coils. Strand layouts distinguish by filament diameter, Cu/non-Cu ratio and Cu matrix distribution between the center and periphery of cross-section. Among them...

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Veröffentlicht in:IEEE transactions on applied superconductivity 2002-03, Vol.12 (1), p.1098-1101
Hauptverfasser: Vedernikov, G.P., Shikov, A.K., Novikov, M.S., Novikov, S.I., Potanina, L.V., Gubkin, I.N.
Format: Artikel
Sprache:eng
Schlagworte:
Cables
Coils
Copper
Critical current
Cross sections
Electrodynamics
Frequency
Magnetic fields
Magnetic losses
Magnetic properties
Niobium base alloys
Niobium compounds
Strands
Superconductivity
Titanium compounds
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Beschreibung
Zusammenfassung:Last year Bochvar Institute (VNIINM) has developed and produced several NbTi strands of various layouts intended for the cables of ITER PF coils. Strand layouts distinguish by filament diameter, Cu/non-Cu ratio and Cu matrix distribution between the center and periphery of cross-section. Among them two strands contain an internal CuNi resistive barrier. The studies on critical current properties at 4.5-8 T are performed and also on electrodynamics behavior of the strands, including AC losses at varying magnetic fields up to 3 T and frequency up to 10 Hz. The experimental results are presented on hysteresis losses and time constant.
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2002.1018592