Comparison of magnetic field profiles of Ag/BSCCO-2223 tapes carrying AC and DC currents

Author

Chesneau, E.C.L. ; Glowacki, B.A. ; Kvitkovic, J. ; Majoros, M. ; van Beek, K. ; Konczykowski, M.

Author_Institution

Interdisciplinary Res. Centre in Supercond., Cambridge Univ., UK

Volume

9

Issue

2

fYear

1999

fDate

6/1/1999 12:00:00 AM

Firstpage

2557

Lastpage

2560

Abstract

The magnetic field profiles above Ag/BSCCO-2223 tapes of multifilamentary and multilayer configurations, whilst carrying transport currents, are compared with those predicted from their AC losses. These tapes show AC losses which follow the critical state equation for losses in a conductor of elliptical cross-section and therefore the magnetic field above the tapes during a current cycle can be predicted. We compare these predicted profiles with Hall probe measurements made when the tapes are carrying both AC and DC transport currents and with magneto-optical images.

Keywords

bismuth compounds; calcium compounds; ceramics; high-temperature superconductors; magnetic field effects; magneto-optical effects; multifilamentary superconductors; silver; strontium compounds; superconducting tapes; AC currents; AC losses; Ag-Bi/sub 2/Sr/sub 2/Ca/sub 2/Cu/sub 3/O; Ag/BSCCO-2223 tapes; DC currents; losses critical state equation; magnetic field profiles; magneto-optical images; multifilamentary configuration; multilayer configuration; transport currents; Amplifiers; Current measurement; Distortion measurement; Frequency measurement; Hall effect devices; Magnetic field measurement; Magnetic fields; Magnetic multilayers; Materials science and technology; Superconductivity;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.785008

Filename

785008