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Uniform trapped fields produced by stacks of HTS coated conductor tape

Published version
Peer-reviewed

Type

Article

Change log

Authors

Mitchell-Williams, TB  ORCID logo  https://orcid.org/0000-0002-2177-6591
Baskys, A 
Kalitka, V 
Molodyk, A 

Abstract

The trapped magnetic field profile of stacks of GdBa2Cu3O7−x superconducting tape was investigated. Angled stacks of superconducting tape were magnetized and found to produce very uniform trapped field profiles. The angled stacks were made of 12 mm × 24 mm solder coated tape pieces and were bonded together following a brief consolidation heat treatment. Layering multiple stacks together and adding a ferromagnetic plate beneath the samples were both found to enhance the magnitude and uniformity of the trapped field profiles. Stationary and time-dependent critical state finite element models were also developed to complement the experimental results and investigate the magnetization process. The size and shapes possible with the angled stacks make them attractive for applications requiring uniform magnetic fields over larger areas than can be achieved with existing bulk rings or tape annuli.

Description

Keywords

HTS tape, stacks of tape, composite bulk superconductor, numerical modelling, trapped field magnets, magnetic measurements, uniform magnetic fields

Journal Title

Superconductor Science and Technology

Conference Name

Journal ISSN

0953-2048
1361-6668

Volume Title

29

Publisher

IOP Publishing
Sponsorship
EPSRC (1365115)