Field Shape Variation Induced by Thermal Cycling and Excitation in the LHC Dipole

The field-shape imperfections measured at room temperature before and after thermal cycling and excitation up to maximum field in three 10 m-long models of the LHC dipole are presented. A systematic variation is observed in the normal sextupole and decapole components. The variation of the other com...

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Detalles Bibliográficos
Autores principales: Pagano, O, Scandale, Walter, Todesco, Ezio
Lenguaje:eng
Publicado: 1999
Materias:
Accelerators and Storage Rings
Acceso en línea:http://cds.cern.ch/record/386679
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author Pagano, O
Scandale, Walter
Todesco, Ezio
author_facet Pagano, O
Scandale, Walter
Todesco, Ezio
author_sort Pagano, O
collection CERN
description The field-shape imperfections measured at room temperature before and after thermal cycling and excitation up to maximum field in three 10 m-long models of the LHC dipole are presented. A systematic variation is observed in the normal sextupole and decapole components. The variation of the other components turns out to be negligible or to randomly vary (as for normal and skew quadrupoles). We show how the systematic variation can be justified by assuming outward radial shift in four blocks of the inner coil. Qualitative tests using Fuji paper confirm this conjecture.
id cern-386679
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1999
record_format invenio
spelling cern-3866792023-05-31T13:24:08Zhttp://cds.cern.ch/record/386679engPagano, OScandale, WalterTodesco, EzioField Shape Variation Induced by Thermal Cycling and Excitation in the LHC DipoleAccelerators and Storage RingsThe field-shape imperfections measured at room temperature before and after thermal cycling and excitation up to maximum field in three 10 m-long models of the LHC dipole are presented. A systematic variation is observed in the normal sextupole and decapole components. The variation of the other components turns out to be negligible or to randomly vary (as for normal and skew quadrupoles). We show how the systematic variation can be justified by assuming outward radial shift in four blocks of the inner coil. Qualitative tests using Fuji paper confirm this conjecture.LHC-Project-Report-285CERN-LHC-Project-Report-285oai:cds.cern.ch:3866791999-04-23
spellingShingle Accelerators and Storage Rings
Pagano, O
Scandale, Walter
Todesco, Ezio
Field Shape Variation Induced by Thermal Cycling and Excitation in the LHC Dipole
title Field Shape Variation Induced by Thermal Cycling and Excitation in the LHC Dipole
title_full Field Shape Variation Induced by Thermal Cycling and Excitation in the LHC Dipole
title_fullStr Field Shape Variation Induced by Thermal Cycling and Excitation in the LHC Dipole
title_full_unstemmed Field Shape Variation Induced by Thermal Cycling and Excitation in the LHC Dipole
title_short Field Shape Variation Induced by Thermal Cycling and Excitation in the LHC Dipole
title_sort field shape variation induced by thermal cycling and excitation in the lhc dipole
topic Accelerators and Storage Rings
url http://cds.cern.ch/record/386679
work_keys_str_mv AT paganoo fieldshapevariationinducedbythermalcyclingandexcitationinthelhcdipole
AT scandalewalter fieldshapevariationinducedbythermalcyclingandexcitationinthelhcdipole
AT todescoezio fieldshapevariationinducedbythermalcyclingandexcitationinthelhcdipole

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