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Strand Coating for the Superconducting Cables of the LHC Main Magnets

The electrical resistance of contacts between strands in the Rutherford type superconducting cables has a major effect on the eddy current loss in cables, and on the dynamic magnetic field error in the LHC main magnets. In order to guarantee the value and constancy of the contact resistance, various...

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Detalles Bibliográficos
Autores principales: Adam, J D, Leroy, D, Oberli, L R, Richter, D
Lenguaje:eng
Publicado: 1998
Materias:
Acceso en línea:https://dx.doi.org/10.1109/77.783400
http://cds.cern.ch/record/368596
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author Adam, J D
Leroy, D
Oberli, L R
Richter, D
author_facet Adam, J D
Leroy, D
Oberli, L R
Richter, D
author_sort Adam, J D
collection CERN
description The electrical resistance of contacts between strands in the Rutherford type superconducting cables has a major effect on the eddy current loss in cables, and on the dynamic magnetic field error in the LHC main magnets. In order to guarantee the value and constancy of the contact resistance, various metallic coatings were studied from the electrical and mechanical points of view in the past. We report on the molten bath Sn95wt.Ag5wt. coating, oxidized thermally in air after the cabling is completed, that we adopted for the cables of the LHC main magnets. The value of the con-tact resistance is determined by the strand coating and cabling procedures, oxidation heat treatment, and the magnet coil cu-ring and handling. Chemical analysis helps to understand the evolution of the contacts. We also mention results on two electrolytic coatings resulting in higher contact resistance.
id cern-368596
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1998
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spelling cern-3685962023-05-31T13:20:40Zdoi:10.1109/77.783400http://cds.cern.ch/record/368596engAdam, J DLeroy, DOberli, L RRichter, DStrand Coating for the Superconducting Cables of the LHC Main MagnetsAccelerators and Storage RingsThe electrical resistance of contacts between strands in the Rutherford type superconducting cables has a major effect on the eddy current loss in cables, and on the dynamic magnetic field error in the LHC main magnets. In order to guarantee the value and constancy of the contact resistance, various metallic coatings were studied from the electrical and mechanical points of view in the past. We report on the molten bath Sn95wt.Ag5wt. coating, oxidized thermally in air after the cabling is completed, that we adopted for the cables of the LHC main magnets. The value of the con-tact resistance is determined by the strand coating and cabling procedures, oxidation heat treatment, and the magnet coil cu-ring and handling. Chemical analysis helps to understand the evolution of the contacts. We also mention results on two electrolytic coatings resulting in higher contact resistance.LHC-Project-Report-251CERN-LHC-Project-Report-251oai:cds.cern.ch:3685961998-10-07
spellingShingle Accelerators and Storage Rings
Adam, J D
Leroy, D
Oberli, L R
Richter, D
Strand Coating for the Superconducting Cables of the LHC Main Magnets
title Strand Coating for the Superconducting Cables of the LHC Main Magnets
title_full Strand Coating for the Superconducting Cables of the LHC Main Magnets
title_fullStr Strand Coating for the Superconducting Cables of the LHC Main Magnets
title_full_unstemmed Strand Coating for the Superconducting Cables of the LHC Main Magnets
title_short Strand Coating for the Superconducting Cables of the LHC Main Magnets
title_sort strand coating for the superconducting cables of the lhc main magnets
topic Accelerators and Storage Rings
url https://dx.doi.org/10.1109/77.783400
http://cds.cern.ch/record/368596
work_keys_str_mv AT adamjd strandcoatingforthesuperconductingcablesofthelhcmainmagnets
AT leroyd strandcoatingforthesuperconductingcablesofthelhcmainmagnets
AT oberlilr strandcoatingforthesuperconductingcablesofthelhcmainmagnets
AT richterd strandcoatingforthesuperconductingcablesofthelhcmainmagnets