Energy Losses in Multifilamentary Composite Wires in 50 Hz Magnetic Fields
The energy losses in 8 commercial composite conductors with submicron NbTi superconducting filaments are reported. The composites consist of Nb-50 wt. % Ti filaments embedded in the matrix. The wires were produced from bimetallic (NbTi/CuNi and NbTi/CuMn) and trimetallic using a (NbTi/Cu/CuNi) billets with Nb — 50%wt.%Ti core. Losses were measured calorimeter with a 50-Hz magnetic fields up to 1 T. Samples measured 0.15 – 0.5 — mm in diameter and contained up to 45000 filaments.
The total losses in the SC composite samples and in a superconducting solenoid were investigated. The influence of the proxi-mity effect on the AC losses is discussed.
KeywordsHysteresis Loss Superconducting Solenoid Composite Wire Amplitude Magnetic Field Matrix Loss
Unable to display preview. Download preview PDF.
- 1.Y. Kamisada, Inoue, K. Takahashi, T. Ogaxa, S. Meguro, M. Nagata, O. Kohno, K. Kamata, M. Ichihara and R. Ogawa, Research and development of superconductors for commercial frequency, IEEE Trans. on Mag., Vol. 28, No.1 (1992).Google Scholar
- 3.M. Majoros, M. Polak, L. Jansak, V.P. Burjak, E.A. Pavlovskaja, O.N. Mironova, A.J. Petrusenko and A.B. Dugadko, Influence of Cu-CuNi matrix composition on ac losses in NbTi fine-filamentary superconductors, Proceeding Smolenice, CSFR, p.64 (1991).Google Scholar
- 4.V.A. Altov, A.V. Ionov, V.V. Kurguzov, V.V. Sytchev, The hysteresis losses in the composite superconductors with superconducting links between the current-carrying elements, Doklady Academy of Science, Vol.301, No.5, p.1108,(1988).Google Scholar