Calculation of persistent currents in superconducting magnets
This paper describes a semianalytical hysteresis model for hard superconductors. The model is based on the critical state model considering the dependency of the critical current density on the varying local field in the superconducting filaments. By combining this hysteresis model with numerical fi...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2000-12-01
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| Series: | Physical Review Special Topics. Accelerators and Beams |
| Online Access: | http://doi.org/10.1103/PhysRevSTAB.3.122402 |
| _version_ | 1818993177681461248 |
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| author | C. Völlinger M. Aleksa S. Russenschuck |
| author_facet | C. Völlinger M. Aleksa S. Russenschuck |
| author_sort | C. Völlinger |
| collection | DOAJ |
| description | This paper describes a semianalytical hysteresis model for hard superconductors. The model is based on the critical state model considering the dependency of the critical current density on the varying local field in the superconducting filaments. By combining this hysteresis model with numerical field computation methods, it is possible to calculate the persistent current multipole errors in the magnet taking local saturation effects in the magnetic iron parts into consideration. As an application of the method, the use of soft magnetic iron sheets (coil protection sheets mounted between the coils and the collars) for partial compensation of the multipole errors during the ramping of the magnets is investigated. |
| first_indexed | 2024-12-20T20:37:55Z |
| format | Article |
| id | doaj.art-1a974b1473a64f948c39330d4386a076 |
| institution | Directory Open Access Journal |
| issn | 1098-4402 |
| language | English |
| last_indexed | 2024-12-20T20:37:55Z |
| publishDate | 2000-12-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Special Topics. Accelerators and Beams |
| spelling | doaj.art-1a974b1473a64f948c39330d4386a0762022-12-21T19:27:11ZengAmerican Physical SocietyPhysical Review Special Topics. Accelerators and Beams1098-44022000-12-0131212240210.1103/PhysRevSTAB.3.122402Calculation of persistent currents in superconducting magnetsC. VöllingerM. AleksaS. RussenschuckThis paper describes a semianalytical hysteresis model for hard superconductors. The model is based on the critical state model considering the dependency of the critical current density on the varying local field in the superconducting filaments. By combining this hysteresis model with numerical field computation methods, it is possible to calculate the persistent current multipole errors in the magnet taking local saturation effects in the magnetic iron parts into consideration. As an application of the method, the use of soft magnetic iron sheets (coil protection sheets mounted between the coils and the collars) for partial compensation of the multipole errors during the ramping of the magnets is investigated.http://doi.org/10.1103/PhysRevSTAB.3.122402 |
| spellingShingle | C. Völlinger M. Aleksa S. Russenschuck Calculation of persistent currents in superconducting magnets Physical Review Special Topics. Accelerators and Beams |
| title | Calculation of persistent currents in superconducting magnets |
| title_full | Calculation of persistent currents in superconducting magnets |
| title_fullStr | Calculation of persistent currents in superconducting magnets |
| title_full_unstemmed | Calculation of persistent currents in superconducting magnets |
| title_short | Calculation of persistent currents in superconducting magnets |
| title_sort | calculation of persistent currents in superconducting magnets |
| url | http://doi.org/10.1103/PhysRevSTAB.3.122402 |
| work_keys_str_mv | AT cvollinger calculationofpersistentcurrentsinsuperconductingmagnets AT maleksa calculationofpersistentcurrentsinsuperconductingmagnets AT srussenschuck calculationofpersistentcurrentsinsuperconductingmagnets |