CUED Publications database

Use of 2G coated conductors for efficient shielding of DC magnetic fields

Fagnard, JF and Dirickx, M and Levin, GA and Barnes, PN and Vanderheyden, B and Vanderbemden, P (2010) Use of 2G coated conductors for efficient shielding of DC magnetic fields.

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Abstract

This paper reports the results of an experimental investigation of the performance of two types of magnetic screens assembled from YBa2Cu3O7-d (YBCO) coated conductors. Since effective screening of the axial DC magnetic field requires the unimpeded flow of an azimuthal persistent current, we demonstrate a configuration of a screening shell made out of standard YBCO coated conductor capable to accomplish that. The screen allows the persistent current to flow in the predominantly azimuthal direction at a temperature of 77 K. The persistent screen, incorporating a single layer of superconducting film, can attenuate an external magnetic field of up to 5 mT by more than an order of magnitude. For comparison purposes, another type of screen which incorporates low critical temperature quasi-persistent joints was also built. The shielding technique we describe here appears to be especially promising for the realization of large scale high-Tc superconducting screens.

Item Type: Article
Uncontrolled Keywords: cond-mat.supr-con cond-mat.supr-con
Subjects: UNSPECIFIED
Divisions: Div B > Electronics, Power & Energy Conversion
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 11:59
Last Modified: 08 Dec 2014 02:22
DOI: