Measurements of coupling losses in superconducting cable-in-conduit conductors affected by internal transverse electromagnetic-forces

Author

Sumiyoshi, F. ; Kawabata, S. ; Matsuyama, K. ; Kawashima, T. ; Mito, T. ; Takahata, K. ; Satow, T. ; Yamamoto, J. ; Kanai, Y. ; Yamamoto, T. ; Nakamoto, K.

Author_Institution

Kagoshima Univ., Japan

Volume

32

Issue

4

fYear

1996

fDate

7/1/1996 12:00:00 AM

Firstpage

2838

Lastpage

2841

Abstract

In order to elucidate the dependence of the internal electromagnetic-forces on the interstrand coupling loss in superconducting cable-in-conduit conductors, we develop a new measuring system. This system enables us to measure the coupling loss of large scale conductors with transport current of 20 kA and the transverse magnetic field of 3.22 T bias in the wide frequency range of the superposed ripple field of 0.1-300 Hz. The data of the preliminary measurements show that the change of the coupling loss is only a little in the low frequency range to the extent of the electromagnetic-force of 0.44 MPa in the case of IS-conductor of the poloidal field coil for LHD

Keywords

losses; multifilamentary superconductors; superconducting coils; LHD; coupling losses; internal transverse electromagnetic-forces; interstrand coupling loss; poloidal field coil; superconducting cable-in-conduit conductors; superposed ripple field; Coils; Conductors; Current measurement; Electromagnetic coupling; Electromagnetic measurements; Frequency measurement; Large-scale systems; Loss measurement; Magnetic field measurement; Superconducting cables;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.511466

Filename

511466