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Numerical Analysis of the Screening Current-Induced Magnetic Field in the HTS Insert Dipole Magnet Feather-M2.1-2

Screening currents are field-induced dynamic phenomena which occur in superconducting materials, leading to persistent magnetization. Such currents are of importance in ReBCO tapes, where the large size of the superconducting filaments gives rise to strong magnetization phenomena. In consequence, su...

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Autores principales: Bortot, Lorenzo, Mentink, Matthias, Petrone, Carlo, Van Nugteren, Jeroen, Kirby, Glyn, Pentella, Mariano, Verweij, Arjan, Schöps, Sebastian
Lenguaje:eng
Publicado: 2020
Materias:
Acceso en línea:https://dx.doi.org/10.1088/1361-6668/abbb17
http://cds.cern.ch/record/2744083
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author Bortot, Lorenzo
Mentink, Matthias
Petrone, Carlo
Van Nugteren, Jeroen
Kirby, Glyn
Pentella, Mariano
Verweij, Arjan
Schöps, Sebastian
author_facet Bortot, Lorenzo
Mentink, Matthias
Petrone, Carlo
Van Nugteren, Jeroen
Kirby, Glyn
Pentella, Mariano
Verweij, Arjan
Schöps, Sebastian
author_sort Bortot, Lorenzo
collection CERN
description Screening currents are field-induced dynamic phenomena which occur in superconducting materials, leading to persistent magnetization. Such currents are of importance in ReBCO tapes, where the large size of the superconducting filaments gives rise to strong magnetization phenomena. In consequence, superconducting accelerator magnets based on ReBCO tapes might experience a relevant degradation of the magnetic field quality in the magnet aperture, eventually leading to particle beam instabilities. Thus, persistent magnetization phenomena need to be accurately evaluated. In this paper, the 2D finite element model of the Feather-M2.1-2 magnet is presented. The model is used to analyze the influence of the screening current-induced magnetic field on the field quality in the magnet aperture. The model relies on a coupled field formulation for eddy current problems in time-domain. The formulation is introduced and verified against theoretical references. Then, the numerical model of the Feather-M2.1-2 magnet is detailed, highlighting the key assumptions and simplifications. The numerical results are discussed and validated with available magnetic measurements. A satisfactory agreement is found, showing the capability of the numerical tool in providing accurate analysis of the dynamic behavior of the Feather-M2.1-2 magnet.
id cern-2744083
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2020
record_format invenio
spelling cern-27440832022-02-01T07:49:51Zdoi:10.1088/1361-6668/abbb17http://cds.cern.ch/record/2744083engBortot, LorenzoMentink, MatthiasPetrone, CarloVan Nugteren, JeroenKirby, GlynPentella, MarianoVerweij, ArjanSchöps, SebastianNumerical Analysis of the Screening Current-Induced Magnetic Field in the HTS Insert Dipole Magnet Feather-M2.1-2physics.acc-phAccelerators and Storage RingsScreening currents are field-induced dynamic phenomena which occur in superconducting materials, leading to persistent magnetization. Such currents are of importance in ReBCO tapes, where the large size of the superconducting filaments gives rise to strong magnetization phenomena. In consequence, superconducting accelerator magnets based on ReBCO tapes might experience a relevant degradation of the magnetic field quality in the magnet aperture, eventually leading to particle beam instabilities. Thus, persistent magnetization phenomena need to be accurately evaluated. In this paper, the 2D finite element model of the Feather-M2.1-2 magnet is presented. The model is used to analyze the influence of the screening current-induced magnetic field on the field quality in the magnet aperture. The model relies on a coupled field formulation for eddy current problems in time-domain. The formulation is introduced and verified against theoretical references. Then, the numerical model of the Feather-M2.1-2 magnet is detailed, highlighting the key assumptions and simplifications. The numerical results are discussed and validated with available magnetic measurements. A satisfactory agreement is found, showing the capability of the numerical tool in providing accurate analysis of the dynamic behavior of the Feather-M2.1-2 magnet.arXiv:2005.09467oai:cds.cern.ch:27440832020-05-19
spellingShingle physics.acc-ph
Accelerators and Storage Rings
Bortot, Lorenzo
Mentink, Matthias
Petrone, Carlo
Van Nugteren, Jeroen
Kirby, Glyn
Pentella, Mariano
Verweij, Arjan
Schöps, Sebastian
Numerical Analysis of the Screening Current-Induced Magnetic Field in the HTS Insert Dipole Magnet Feather-M2.1-2
title Numerical Analysis of the Screening Current-Induced Magnetic Field in the HTS Insert Dipole Magnet Feather-M2.1-2
title_full Numerical Analysis of the Screening Current-Induced Magnetic Field in the HTS Insert Dipole Magnet Feather-M2.1-2
title_fullStr Numerical Analysis of the Screening Current-Induced Magnetic Field in the HTS Insert Dipole Magnet Feather-M2.1-2
title_full_unstemmed Numerical Analysis of the Screening Current-Induced Magnetic Field in the HTS Insert Dipole Magnet Feather-M2.1-2
title_short Numerical Analysis of the Screening Current-Induced Magnetic Field in the HTS Insert Dipole Magnet Feather-M2.1-2
title_sort numerical analysis of the screening current-induced magnetic field in the hts insert dipole magnet feather-m2.1-2
topic physics.acc-ph
Accelerators and Storage Rings
url https://dx.doi.org/10.1088/1361-6668/abbb17
http://cds.cern.ch/record/2744083
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