Study of Low Loss Experimental Superconducting Nb-Ti Wires to be used in FAIR Magnets
| Autor: | I.N. Gubkin, A. V. Malchenkov, L.V. Potanina, N. I. Salunin, A. V. Kalinov, Yu. V. Karasev, I. M. Abdyukhanov, M. V. Polikarpova, V. I. Pantsyrny, I. F. Voloshin |
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| Rok vydání: | 2015 |
| Předmět: |
Superconductivity
Resistive touchscreen Materials science Condensed matter physics business.industry Superconducting electric machine Superconducting magnetic energy storage Condensed Matter Physics Electronic Optical and Magnetic Materials law.invention law Magnet Optoelectronics Coupling (piping) Facility for Antiproton and Ion Research Electrical and Electronic Engineering Current (fluid) business |
| Zdroj: | IEEE Transactions on Applied Superconductivity. 25:1-5 |
| ISSN: | 1558-2515 1051-8223 |
| DOI: | 10.1109/tasc.2015.2402754 |
| Popis: | For the effective operation of the Facility for Antiproton and Ion Research (FAIR) magnet system, a new class of superconducting wires with high current carrying capacity and low energy losses is needed. Special requirements are formulated to the wires for this application. Diameter of Nb-Ti filaments has to be about 3 μm, critical current density J c has to be above 4500 A/mm 2 (at 2 T; 4.2 K) and filament twist pitch should be as small as possible without a degradation of critical current density. These wires with small filaments should contain a resistive (Cu-0.5%Mn) inter-filament matrix to reduce inter-filament coupling current losses and OF copper outside and inside the filamentary region to provide required stabilization. The comparative study of low losses superconducting Nb-Ti wires of different designs was performed. These experimental wires intended for use in FAIR model magnets were fabricated by double stacking method. The experimental Nb-Ti wires conform to the abovementioned requirements. This paper presents current characteristics, hysteresis losses and other properties of experimental low losses Nb-Ti wires. The benefits of each design are discussed. |
| Databáze: | OpenAIRE |
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