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Superconductor Dynamics

Abstract

Superconductors used in magnet technology could carry extreme currents because of their ability to keep the magnetic flux motionless. The dynamics of the magnetic flux interaction with superconductors is controlled by this property. The cases of electrical transport in a round wire and the magnetization of wires of various shapes (circular, elliptical, plate) in an external magnetic field are analysed. Resistance to the magnetic field penetration means that the field produced by the superconducting magnet is no longer proportional to the supplied current. It also leads to a dissipation of electromagnetic energy. In conductors with unequal transverse dimensions, such as flat cables, the orientation with respect to the magnetic field plays an essential role. A reduction of magnetization currents can be achieved by splitting the core of a superconducting wire into fine filaments; however, new kinds of electrical currents that couple the filaments consequently appear. Basic formulas allowing qualitative analyses of various flux dynamic cases are presented.
Authors:
Gömöry, F [1] 
  1. Bratislava, Inst. Elect. Eng. (Slovakia)
Publication Date:
Jul 01, 2014
Product Type:
Conference
Report Number:
CERN-2014/005
Resource Relation:
Conference: CAS - CERN Accelerator School: Course on Superconductivity for Accelerators, Erice (Italy), 24 Apr - 4 May 2013; Other Information: Country of input: International Atomic Energy Agency (IAEA); DOI: 10.5170/CERN-2014-005.477; Copyright (c) 2014 CERN; This is an open access publication distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.; Related Information: In: Proceedings of CAS - CERN Accelerator School: Course on Superconductivity for Accelerators| by Bailey, R (ed.) [European Organization for Nuclear Research, Geneva (Switzerland)]| CERN - European Organization for Nuclear Research, Geneva (Switzerland)| 592 p.
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ACCELERATORS; ELECTRIC CURRENTS; MAGNETIC FIELDS; MAGNETIC FLUX; MAGNETIZATION; SUPERCONDUCTING MAGNETS; SUPERCONDUCTING WIRES; SUPERCONDUCTORS
OSTI ID:
22548688
Research Organizations:
CERN - European Organization for Nuclear Research, Geneva (Switzerland)
Country of Origin:
CERN
Language:
English
Other Identifying Numbers:
Other: ISSN 0007-8328; ISBN 978-92-9083-405-2; TRN: XC16A0464119744
Availability:
Available on-line: http://cds.cern.ch/record/1974067/files/arXiv:1501.07159.pdf; Available on-line: http://cds.cern.ch/record/1507630/files/CERN-2014-005.pdf
Submitting Site:
INIS
Size:
page(s) 477-495
Announcement Date:
Dec 20, 2016

Citation Formats

Gömöry, F. Superconductor Dynamics. CERN: N. p., 2014. Web.
Gömöry, F. Superconductor Dynamics. CERN.
Gömöry, F. 2014. "Superconductor Dynamics." CERN.
@misc{etde_22548688,
title = {Superconductor Dynamics}
author = {Gömöry, F}
abstractNote = {Superconductors used in magnet technology could carry extreme currents because of their ability to keep the magnetic flux motionless. The dynamics of the magnetic flux interaction with superconductors is controlled by this property. The cases of electrical transport in a round wire and the magnetization of wires of various shapes (circular, elliptical, plate) in an external magnetic field are analysed. Resistance to the magnetic field penetration means that the field produced by the superconducting magnet is no longer proportional to the supplied current. It also leads to a dissipation of electromagnetic energy. In conductors with unequal transverse dimensions, such as flat cables, the orientation with respect to the magnetic field plays an essential role. A reduction of magnetization currents can be achieved by splitting the core of a superconducting wire into fine filaments; however, new kinds of electrical currents that couple the filaments consequently appear. Basic formulas allowing qualitative analyses of various flux dynamic cases are presented.}
place = {CERN}
year = {2014}
month = {Jul}
}