A Vector Hysteresis Model for Superconducting Filament Magnetization in Accelerator Magnets

Magnetic field changes in the coils of superconducting magnets are shielded from the filaments' core by so-called persistent currents which can be modeled by means of the critical state model. This paper presents a semi-analytical 2-dimensional model of the filament magnetization due to persist...

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Detalles Bibliográficos
Autores principales: Aleksa, Martin, Auchmann, Bernard, Russenschuck, Stephan, Völlinger, C
Lenguaje:eng
Publicado: 2003
Materias:
Accelerators and Storage Rings
Acceso en línea:https://dx.doi.org/10.1109/TMAG.2004.825464
http://cds.cern.ch/record/681857
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author Aleksa, Martin
Auchmann, Bernard
Russenschuck, Stephan
Völlinger, C
author_facet Aleksa, Martin
Auchmann, Bernard
Russenschuck, Stephan
Völlinger, C
author_sort Aleksa, Martin
collection CERN
description Magnetic field changes in the coils of superconducting magnets are shielded from the filaments' core by so-called persistent currents which can be modeled by means of the critical state model. This paper presents a semi-analytical 2-dimensional model of the filament magnetization due to persistent currents for changes of the magnitude of the magnetic induction and its direction while taking the field dependence of the critical current density into account. The model is combined with numerical field computation for the calculation of field errors in superconducting magnets. The filament magnetization and the field errors in a nested orbit corrector magnet for the LHC project at CERN have been calculated as an example.
id cern-681857
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2003
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spelling cern-6818572019-09-30T06:29:59Zdoi:10.1109/TMAG.2004.825464http://cds.cern.ch/record/681857engAleksa, MartinAuchmann, BernardRussenschuck, StephanVöllinger, CA Vector Hysteresis Model for Superconducting Filament Magnetization in Accelerator MagnetsAccelerators and Storage RingsMagnetic field changes in the coils of superconducting magnets are shielded from the filaments' core by so-called persistent currents which can be modeled by means of the critical state model. This paper presents a semi-analytical 2-dimensional model of the filament magnetization due to persistent currents for changes of the magnitude of the magnetic induction and its direction while taking the field dependence of the critical current density into account. The model is combined with numerical field computation for the calculation of field errors in superconducting magnets. The filament magnetization and the field errors in a nested orbit corrector magnet for the LHC project at CERN have been calculated as an example.CERN-AT-2003-008-MELoai:cds.cern.ch:6818572003-11-07
spellingShingle Accelerators and Storage Rings
Aleksa, Martin
Auchmann, Bernard
Russenschuck, Stephan
Völlinger, C
A Vector Hysteresis Model for Superconducting Filament Magnetization in Accelerator Magnets
title A Vector Hysteresis Model for Superconducting Filament Magnetization in Accelerator Magnets
title_full A Vector Hysteresis Model for Superconducting Filament Magnetization in Accelerator Magnets
title_fullStr A Vector Hysteresis Model for Superconducting Filament Magnetization in Accelerator Magnets
title_full_unstemmed A Vector Hysteresis Model for Superconducting Filament Magnetization in Accelerator Magnets
title_short A Vector Hysteresis Model for Superconducting Filament Magnetization in Accelerator Magnets
title_sort vector hysteresis model for superconducting filament magnetization in accelerator magnets
topic Accelerators and Storage Rings
url https://dx.doi.org/10.1109/TMAG.2004.825464
http://cds.cern.ch/record/681857
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