The development of a 2.5 T/100 kV A AC superconducting magnet using a high-JcNbTi superconducting wire having Nb artificial pins
| Autor: | Masataka Iwakuma, Suzuki Takuya, Teruo Matsushita, K. Yamafuji, Yasuzo Tanaka, O. Miura, Kazuo Funaki, Inoue Itaru, Kaname Matsumoto |
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| Rok vydání: | 1993 |
| Předmět: |
Superconductivity
Materials science business.industry Superconducting wire Metals and Alloys Titanium alloy Superconducting magnet engineering.material Condensed Matter Physics Electromagnetic induction Magnetic field Hysteresis Nuclear magnetic resonance Magnet Materials Chemistry Ceramics and Composites engineering Optoelectronics Electrical and Electronic Engineering business |
| Zdroj: | Superconductor Science and Technology. 6:748-754 |
| ISSN: | 1361-6668 0953-2048 |
| DOI: | 10.1088/0953-2048/6/10/008 |
| Popis: | High critical current densities, such as 1.61*1010 A m-2 at 1 T, 6.10*109 A m-2 at 3 T and 2.89*109 A m-2 at 5 T were achieved by optimizing the artificial pin number, the pin size and the pin interval inside the NbTi filaments for ultrafine-multifilamentary NbTi superconducting wires having Nb island-type artificial pins. The obtained critical current densities above 0.5 T are two or three times higher than in most conventional NbTi superconducting wires for AC use, because the position of the peak value of pinning-force density could be shifted in the wide range of the magnetic field by controlling the designed artificial pin parameters. On the basis of these results, we designed and fabricated a high-Jc, AC superconducting wire having Nb island-type pins for the purpose of AC use under medium magnetic field above 2 T, and successfully completed an AC superconducting solenoid magnet. This magnet was the first magnet wound by NbTi multifilamentary wires with artificial pins, and could generate the peak value of 2.5 T at 60 Hz AC mode without quench, where the electrical capacity of the magnet corresponded to about 100 kV A. |
| Databáze: | OpenAIRE |
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