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Beam Dynamics Requirements for the Powering Scheme of the HL-LHC Triplet
For the HL-LHC, β ∗ values as small as 15 cm are envisaged as baseline scenario for the high luminosity insertions IR1 and IR5, thus leading to an increase of the maximum β- functions in the inner triplet (IT). The larger beta-functions in the IT result in a higher sensitivity of the beam to any lin...
Autores principales: | , , , |
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Lenguaje: | eng |
Publicado: |
2015
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Materias: | |
Acceso en línea: | http://cds.cern.ch/record/2112216 |
_version_ | 1780948921160302592 |
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author | Fitterer, Miriam De Maria, R Fartoukh, Stephane Giovannozzi, Massimo |
author_facet | Fitterer, Miriam De Maria, R Fartoukh, Stephane Giovannozzi, Massimo |
author_sort | Fitterer, Miriam |
collection | CERN |
description | For the HL-LHC, β ∗ values as small as 15 cm are envisaged as baseline scenario for the high luminosity insertions IR1 and IR5, thus leading to an increase of the maximum β- functions in the inner triplet (IT). The larger beta-functions in the IT result in a higher sensitivity of the beam to any linear or non-linear, static or dynamic, field imperfections in the IT region. In this paper, we summarize accordingly the tolerances of the triplet power supplies in terms of current ripple, stability and reproducibility. Both the baseline IT powering scheme and other alternative schemes will be presented, the later reducing the tune shift caused by a current modulation and thus weakening its possible impact on the long term stability. |
id | cern-2112216 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2015 |
record_format | invenio |
spelling | cern-21122162022-08-10T13:06:06Zhttp://cds.cern.ch/record/2112216engFitterer, MiriamDe Maria, RFartoukh, StephaneGiovannozzi, MassimoBeam Dynamics Requirements for the Powering Scheme of the HL-LHC TripletAccelerators and Storage RingsFor the HL-LHC, β ∗ values as small as 15 cm are envisaged as baseline scenario for the high luminosity insertions IR1 and IR5, thus leading to an increase of the maximum β- functions in the inner triplet (IT). The larger beta-functions in the IT result in a higher sensitivity of the beam to any linear or non-linear, static or dynamic, field imperfections in the IT region. In this paper, we summarize accordingly the tolerances of the triplet power supplies in terms of current ripple, stability and reproducibility. Both the baseline IT powering scheme and other alternative schemes will be presented, the later reducing the tune shift caused by a current modulation and thus weakening its possible impact on the long term stability.CERN-ACC-2015-0174oai:cds.cern.ch:21122162015-05-03 |
spellingShingle | Accelerators and Storage Rings Fitterer, Miriam De Maria, R Fartoukh, Stephane Giovannozzi, Massimo Beam Dynamics Requirements for the Powering Scheme of the HL-LHC Triplet |
title | Beam Dynamics Requirements for the Powering Scheme of the HL-LHC Triplet |
title_full | Beam Dynamics Requirements for the Powering Scheme of the HL-LHC Triplet |
title_fullStr | Beam Dynamics Requirements for the Powering Scheme of the HL-LHC Triplet |
title_full_unstemmed | Beam Dynamics Requirements for the Powering Scheme of the HL-LHC Triplet |
title_short | Beam Dynamics Requirements for the Powering Scheme of the HL-LHC Triplet |
title_sort | beam dynamics requirements for the powering scheme of the hl-lhc triplet |
topic | Accelerators and Storage Rings |
url | http://cds.cern.ch/record/2112216 |
work_keys_str_mv | AT fitterermiriam beamdynamicsrequirementsforthepoweringschemeofthehllhctriplet AT demariar beamdynamicsrequirementsforthepoweringschemeofthehllhctriplet AT fartoukhstephane beamdynamicsrequirementsforthepoweringschemeofthehllhctriplet AT giovannozzimassimo beamdynamicsrequirementsforthepoweringschemeofthehllhctriplet |