Magnetic stability of AC superconducting wire in self field

Author

Nishijima, G. ; Okamura, Takahiro ; Kabashima, S. ; Kurusu, T. ; Yazawa, T. ; Nomura, S. ; Nakagome, H. ; Maeda, H.

Author_Institution

Dept. of Energy Sci., Tokyo Inst. of Technol., Japan

Volume

7

Issue

2

fYear

1997

fDate

6/1/1997 12:00:00 AM

Firstpage

778

Lastpage

781

Abstract

Magnetic stability of AC superconducting wires was investigated experimentally. In a long superconducting wire, self-field cannot diffuse sufficiently, and it has been thought that flux jumping occurs when the thickness of the saturated region is larger than some threshold value in multifilamentary superconductors. In this paper, we measured a current sweep rate dependence of quench current of the AC superconducting wire. The experimental results indicated that AC superconducting wires were magnetically stable and could carry the critical current at the sweep rate that was 100 times higher than a threshold value which was estimated from one-dimensional diffusion equation.

Keywords

critical currents; multifilamentary superconductors; AC superconducting wire; critical current; current sweep rate; flux jumping; magnetic stability; multifilamentary superconductor; one-dimensional diffusion equation; quench current; self field; Critical current; Current measurement; Equations; Magnetic field measurement; Magnetic flux; Multifilamentary superconductors; Saturation magnetization; Stability; Superconducting filaments and wires; Superconducting magnets;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.614619

Filename

614619