Magnetic Field Calculations Including the Impact of Persistent Currents in Superconducting Filaments

The magnetic field in the coils of superconducting magnets induces so-called persistent currents in the filaments. Persistent currents are bipolar screening currents that do not decay due to the lack of resistivity. The NbTi-filaments are type II superconductors and can be described by the critical...

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Detalles Bibliográficos
Autores principales: Aleksa, Martin, Russenschuck, Stephan, Völlinger, Christine
Lenguaje:eng
Publicado: 2001
Materias:
Accelerators and Storage Rings
Acceso en línea:http://cds.cern.ch/record/517562
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author Aleksa, Martin
Russenschuck, Stephan
Völlinger, Christine
author_facet Aleksa, Martin
Russenschuck, Stephan
Völlinger, Christine
author_sort Aleksa, Martin
collection CERN
description The magnetic field in the coils of superconducting magnets induces so-called persistent currents in the filaments. Persistent currents are bipolar screening currents that do not decay due to the lack of resistivity. The NbTi-filaments are type II superconductors and can be described by the critical state model. This paper presents an analytical hysteresis model of the filament magnetization due to persistent currents which takes into account the changing magnetic induction inside the filament. This model is combined with numerical field computation methods, taking local saturation effects in the ferromagnetic yoke into consideration.
id cern-517562
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2001
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spelling cern-5175622023-05-31T13:23:32Zhttp://cds.cern.ch/record/517562engAleksa, MartinRussenschuck, StephanVöllinger, ChristineMagnetic Field Calculations Including the Impact of Persistent Currents in Superconducting FilamentsAccelerators and Storage RingsThe magnetic field in the coils of superconducting magnets induces so-called persistent currents in the filaments. Persistent currents are bipolar screening currents that do not decay due to the lack of resistivity. The NbTi-filaments are type II superconductors and can be described by the critical state model. This paper presents an analytical hysteresis model of the filament magnetization due to persistent currents which takes into account the changing magnetic induction inside the filament. This model is combined with numerical field computation methods, taking local saturation effects in the ferromagnetic yoke into consideration.LHC-Project-Report-494CERN-LHC-Project-Report-494oai:cds.cern.ch:5175622001-08-27
spellingShingle Accelerators and Storage Rings
Aleksa, Martin
Russenschuck, Stephan
Völlinger, Christine
Magnetic Field Calculations Including the Impact of Persistent Currents in Superconducting Filaments
title Magnetic Field Calculations Including the Impact of Persistent Currents in Superconducting Filaments
title_full Magnetic Field Calculations Including the Impact of Persistent Currents in Superconducting Filaments
title_fullStr Magnetic Field Calculations Including the Impact of Persistent Currents in Superconducting Filaments
title_full_unstemmed Magnetic Field Calculations Including the Impact of Persistent Currents in Superconducting Filaments
title_short Magnetic Field Calculations Including the Impact of Persistent Currents in Superconducting Filaments
title_sort magnetic field calculations including the impact of persistent currents in superconducting filaments
topic Accelerators and Storage Rings
url http://cds.cern.ch/record/517562
work_keys_str_mv AT aleksamartin magneticfieldcalculationsincludingtheimpactofpersistentcurrentsinsuperconductingfilaments
AT russenschuckstephan magneticfieldcalculationsincludingtheimpactofpersistentcurrentsinsuperconductingfilaments
AT vollingerchristine magneticfieldcalculationsincludingtheimpactofpersistentcurrentsinsuperconductingfilaments

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