Bortot, L. ; Mentink, M. ; Petrone, C. ; Van Nugteren, J. ; Kirby, G. ; Pentella, M. ; Verweij, A. ; Schöps, S. (2020)
Numerical analysis of the screening current-induced magnetic field in the HTS insert dipole magnet Feather-M2.1-2.
In: Superconductor Science and Technology, 33 (12)
doi: 10.1088/1361-6668/abbb17
Article, Bibliographie
This is the latest version of this item.
Abstract
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.
| Item Type: | Article |
|---|---|
| Erschienen: | 2020 |
| Creators: | Bortot, L. ; Mentink, M. ; Petrone, C. ; Van Nugteren, J. ; Kirby, G. ; Pentella, M. ; Verweij, A. ; Schöps, S. |
| Type of entry: | Bibliographie |
| Title: | Numerical analysis of the screening current-induced magnetic field in the HTS insert dipole magnet Feather-M2.1-2 |
| Language: | English |
| Date: | 2020 |
| Place of Publication: | Bristol |
| Publisher: | IOP Publishing |
| Journal or Publication Title: | Superconductor Science and Technology |
| Volume of the journal: | 33 |
| Issue Number: | 12 |
| Collation: | 15 Seiten |
| DOI: | 10.1088/1361-6668/abbb17 |
| Corresponding Links: | |
| Abstract: | 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. |
| Uncontrolled Keywords: | high-temperature superconductors, screening currents, magnetic fields, magnetization, finite-element analysis, superconducting coils, accelerator magnets |
| Classification DDC: | 600 Technology, medicine, applied sciences > 621.3 Electrical engineering, electronics |
| Divisions: | 18 Department of Electrical Engineering and Information Technology 18 Department of Electrical Engineering and Information Technology > Institute for Accelerator Science and Electromagnetic Fields > Computational Electromagnetics 18 Department of Electrical Engineering and Information Technology > Institute for Accelerator Science and Electromagnetic Fields |
| Date Deposited: | 07 Mar 2024 10:29 |
| Last Modified: | 07 Mar 2024 10:29 |
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Numerical analysis of the screening current-induced magnetic field in the HTS insert dipole magnet Feather-M2.1-2. (deposited 05 Mar 2024 10:51)
- Numerical analysis of the screening current-induced magnetic field in the HTS insert dipole magnet Feather-M2.1-2. (deposited 07 Mar 2024 10:29) [Currently Displayed]
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