Bortot, L. ; Mentink, M. ; Petrone, C. ; Van Nugteren, J. ; Deferne, G. ; Koettig, T. ; Kirby, G. ; Pentella, M. ; Perez, J. C. ; Pincot, F. O. ; De Rijk, G. ; Russenschuck, S. ; Verweij, A. P. ; Schöps, S. (2024)
High-temperature superconducting screens for magnetic field-error cancellation in accelerator magnets.
In: Superconductor Science and Technology, 2021, 34 (10)
doi: 10.26083/tuprints-00020507
Article, Secondary publication, Publisher's Version
 | There is a more recent version of this item available. |
Abstract
Accelerators magnets must have minimal magnetic field imperfections to reduce particle-beam instabilities. In the case of coils made of high-temperature superconducting (HTS) tapes, the magnetization due to persistent currents adds an undesired field contribution, potentially degrading the magnetic field quality. In this paper we study the use of superconducting screens based on HTS tapes for reducing the magnetic field imperfections in accelerator magnets. The screens exploit the magnetization by persistent currents to cancel out the magnetic field error. The screens are aligned with the main field component, such that only the undesired field components are compensated. The screens are self-regulating, and do not require any externally applied source of energy. Measurements in liquid nitrogen at 77 K show for dipole-field configurations a significant reduction of the magnetic field error up to a factor of four. The residual error is explained via numerical simulations accounting for the geometric defects in the HTS screens, achieving satisfactory agreement with experimental results. Simulations show that if screens are increased in width and thickness, and operated at 4.5 K, field errors may be eliminated almost entirely for the typical excitation cycles of accelerator magnets.
| Item Type: | Article |
|---|---|
| Erschienen: | 2024 |
| Creators: | Bortot, L. ; Mentink, M. ; Petrone, C. ; Van Nugteren, J. ; Deferne, G. ; Koettig, T. ; Kirby, G. ; Pentella, M. ; Perez, J. C. ; Pincot, F. O. ; De Rijk, G. ; Russenschuck, S. ; Verweij, A. P. ; Schöps, S. |
| Type of entry: | Secondary publication |
| Title: | High-temperature superconducting screens for magnetic field-error cancellation in accelerator magnets |
| Language: | English |
| Date: | 5 March 2024 |
| Place of Publication: | Darmstadt |
| Year of primary publication: | 2021 |
| Place of primary publication: | Bristol |
| Publisher: | IOP Publishing |
| Journal or Publication Title: | Superconductor Science and Technology |
| Volume of the journal: | 34 |
| Issue Number: | 10 |
| Collation: | 14 Seiten |
| DOI: | 10.26083/tuprints-00020507 |
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/20507 |
| Corresponding Links: | |
| Origin: | Secondary publication DeepGreen |
| Abstract: | Accelerators magnets must have minimal magnetic field imperfections to reduce particle-beam instabilities. In the case of coils made of high-temperature superconducting (HTS) tapes, the magnetization due to persistent currents adds an undesired field contribution, potentially degrading the magnetic field quality. In this paper we study the use of superconducting screens based on HTS tapes for reducing the magnetic field imperfections in accelerator magnets. The screens exploit the magnetization by persistent currents to cancel out the magnetic field error. The screens are aligned with the main field component, such that only the undesired field components are compensated. The screens are self-regulating, and do not require any externally applied source of energy. Measurements in liquid nitrogen at 77 K show for dipole-field configurations a significant reduction of the magnetic field error up to a factor of four. The residual error is explained via numerical simulations accounting for the geometric defects in the HTS screens, achieving satisfactory agreement with experimental results. Simulations show that if screens are increased in width and thickness, and operated at 4.5 K, field errors may be eliminated almost entirely for the typical excitation cycles of accelerator magnets. |
| Uncontrolled Keywords: | high-temperature superconductors, magnetic field quality, screening currents, persistent magnetization, superconducting magnetic screens, finite-element analysis, accelerator magnets |
| Status: | Publisher's Version |
| URN: | urn:nbn:de:tuda-tuprints-205075 |
| 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: | 05 Mar 2024 10:48 |
| Last Modified: | 07 Mar 2024 10:28 |
| PPN: | |
| Export: | |
| Suche nach Titel in: | TUfind oder in Google |
Available Versions of this Item
- High-temperature superconducting screens for magnetic field-error cancellation in accelerator magnets. (deposited 05 Mar 2024 10:48) [Currently Displayed]
 |
Send an inquiry |
Options (only for editors)
 |
Show editorial Details |
Drucken
Impressum