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Investigation of the Periodic Magnetic Field Modulation in LHC Superconducting Dipoles
The windings of high-field accelerator magnets are usually made of Rutherford-type superconducting cables. The magnetic field distribution along the axis of such magnets exhibits a periodic modulation with a wavelength equal to the twist pitch length of the cable used in the winding. This effect, re...
Autores principales: | , , |
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Lenguaje: | eng |
Publicado: |
2002
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Materias: | |
Acceso en línea: | https://dx.doi.org/10.1109/TASC.2002.1018395 http://cds.cern.ch/record/544979 |
_version_ | 1780898392766939136 |
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author | Pugnat, P Schreiner, T Siemko, A |
author_facet | Pugnat, P Schreiner, T Siemko, A |
author_sort | Pugnat, P |
collection | CERN |
description | The windings of high-field accelerator magnets are usually made of Rutherford-type superconducting cables. The magnetic field distribution along the axis of such magnets exhibits a periodic modulation with a wavelength equal to the twist pitch length of the cable used in the winding. This effect, resulting from quasi-persistent currents, was investigated with a Hall probes array inserted inside the aperture of the LHC superconducting dipoles, both in short models and full-scale prototypes. The amplitude and the time dependence of this periodic field oscillation have been studied as a function of the magnet current history. The origin and the impact on the LHC dipoles stability of the non-uniform current redistribution producing such a field modulation are discussed. |
id | cern-544979 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2002 |
record_format | invenio |
spelling | cern-5449792023-05-31T13:20:47Zdoi:10.1109/TASC.2002.1018395http://cds.cern.ch/record/544979engPugnat, PSchreiner, TSiemko, AInvestigation of the Periodic Magnetic Field Modulation in LHC Superconducting DipolesAccelerators and Storage RingsThe windings of high-field accelerator magnets are usually made of Rutherford-type superconducting cables. The magnetic field distribution along the axis of such magnets exhibits a periodic modulation with a wavelength equal to the twist pitch length of the cable used in the winding. This effect, resulting from quasi-persistent currents, was investigated with a Hall probes array inserted inside the aperture of the LHC superconducting dipoles, both in short models and full-scale prototypes. The amplitude and the time dependence of this periodic field oscillation have been studied as a function of the magnet current history. The origin and the impact on the LHC dipoles stability of the non-uniform current redistribution producing such a field modulation are discussed.LHC-Project-Report-560CERN-LHC-Project-Report-560oai:cds.cern.ch:5449792002-03-06 |
spellingShingle | Accelerators and Storage Rings Pugnat, P Schreiner, T Siemko, A Investigation of the Periodic Magnetic Field Modulation in LHC Superconducting Dipoles |
title | Investigation of the Periodic Magnetic Field Modulation in LHC Superconducting Dipoles |
title_full | Investigation of the Periodic Magnetic Field Modulation in LHC Superconducting Dipoles |
title_fullStr | Investigation of the Periodic Magnetic Field Modulation in LHC Superconducting Dipoles |
title_full_unstemmed | Investigation of the Periodic Magnetic Field Modulation in LHC Superconducting Dipoles |
title_short | Investigation of the Periodic Magnetic Field Modulation in LHC Superconducting Dipoles |
title_sort | investigation of the periodic magnetic field modulation in lhc superconducting dipoles |
topic | Accelerators and Storage Rings |
url | https://dx.doi.org/10.1109/TASC.2002.1018395 http://cds.cern.ch/record/544979 |
work_keys_str_mv | AT pugnatp investigationoftheperiodicmagneticfieldmodulationinlhcsuperconductingdipoles AT schreinert investigationoftheperiodicmagneticfieldmodulationinlhcsuperconductingdipoles AT siemkoa investigationoftheperiodicmagneticfieldmodulationinlhcsuperconductingdipoles |