Field quality in the twin aperture D2 dipoles for LHC under asymmetric excitation

Twin aperture D2 magnets are one of the several types of dipoles to be built by BNL for the interaction regions of LHC. To minimize the number of dipole correctors required in the interaction regions, D2 will also be used as part of the steering system. Consequently, the operating fields in the two...

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Detalles Bibliográficos
Autores principales: Jain, A, Wanderer, P J, Willen, E
Lenguaje:eng
Publicado: 1999
Materias:
Accelerators and Storage Rings
Acceso en línea:http://cds.cern.ch/record/426226
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author Jain, A
Wanderer, P J
Willen, E
author_facet Jain, A
Wanderer, P J
Willen, E
author_sort Jain, A
collection CERN
description Twin aperture D2 magnets are one of the several types of dipoles to be built by BNL for the interaction regions of LHC. To minimize the number of dipole correctors required in the interaction regions, D2 will also be used as part of the steering system. Consequently, the operating fields in the two apertures may differ by up to ~10at 7 TeV operation and ~33at injection in order to compensate for the strengths of the correctors that would otherwise be required. Such asymmetric excitation of the two apertures may induce undesirable field harmonics. The saturation behavior of various harmonics is studied using POISSON and OPERA-2D. It is shown that the changes in harmonics resulting from the anticipated asymmetry are within tolerable limits. (2 refs).
id cern-426226
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1999
record_format invenio
spelling cern-4262262019-09-30T06:29:59Zhttp://cds.cern.ch/record/426226engJain, AWanderer, P JWillen, EField quality in the twin aperture D2 dipoles for LHC under asymmetric excitationAccelerators and Storage RingsTwin aperture D2 magnets are one of the several types of dipoles to be built by BNL for the interaction regions of LHC. To minimize the number of dipole correctors required in the interaction regions, D2 will also be used as part of the steering system. Consequently, the operating fields in the two apertures may differ by up to ~10at 7 TeV operation and ~33at injection in order to compensate for the strengths of the correctors that would otherwise be required. Such asymmetric excitation of the two apertures may induce undesirable field harmonics. The saturation behavior of various harmonics is studied using POISSON and OPERA-2D. It is shown that the changes in harmonics resulting from the anticipated asymmetry are within tolerable limits. (2 refs).oai:cds.cern.ch:4262261999
spellingShingle Accelerators and Storage Rings
Jain, A
Wanderer, P J
Willen, E
Field quality in the twin aperture D2 dipoles for LHC under asymmetric excitation
title Field quality in the twin aperture D2 dipoles for LHC under asymmetric excitation
title_full Field quality in the twin aperture D2 dipoles for LHC under asymmetric excitation
title_fullStr Field quality in the twin aperture D2 dipoles for LHC under asymmetric excitation
title_full_unstemmed Field quality in the twin aperture D2 dipoles for LHC under asymmetric excitation
title_short Field quality in the twin aperture D2 dipoles for LHC under asymmetric excitation
title_sort field quality in the twin aperture d2 dipoles for lhc under asymmetric excitation
topic Accelerators and Storage Rings
url http://cds.cern.ch/record/426226
work_keys_str_mv AT jaina fieldqualityinthetwinapertured2dipolesforlhcunderasymmetricexcitation
AT wandererpj fieldqualityinthetwinapertured2dipolesforlhcunderasymmetricexcitation
AT willene fieldqualityinthetwinapertured2dipolesforlhcunderasymmetricexcitation

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