Operational Performance of the LHC Proton Beams with the SPS Low Transition Energy Optics

An optics in the SPS with lower integer tunes (20 versus 26) was proposed and introduced in machine studies since 2010, as a measure for increasing transverse and longitudinal instability thresholds, especially at low energy, for the LHC proton beams. After two years of machine studies and careful o...

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Detalles Bibliográficos
Autores principales: Papaphilippou, Y, Arduini, G, Argyropoulos, T, Bartmann, W, Bartosik, H, Bohl, T, Bracco, C, Cettour-Cave, S, Cornelis, K, Drosdal, L, Esteban Muller, J, Goddard, B, Guerrero, A, H¨ofle, W, Kain, V, Rumolo, G, Salvant, B, Shaposhnikova, E, Timko, H, Valuch, D, Vanbavinckhove, G, Wenninger, J, Gianfelice-Wendt, E
Lenguaje:eng
Publicado: 2013
Materias:
Accelerators and Storage Rings
Acceso en línea:http://cds.cern.ch/record/1581446
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author Papaphilippou, Y
Arduini, G
Argyropoulos, T
Bartmann, W
Bartosik, H
Bohl, T
Bracco, C
Cettour-Cave, S
Cornelis, K
Drosdal, L
Esteban Muller, J
Goddard, B
Guerrero, A
H¨ofle, W
Kain, V
Rumolo, G
Salvant, B
Shaposhnikova, E
Timko, H
Valuch, D
Vanbavinckhove, G
Wenninger, J
Gianfelice-Wendt, E
author_facet Papaphilippou, Y
Arduini, G
Argyropoulos, T
Bartmann, W
Bartosik, H
Bohl, T
Bracco, C
Cettour-Cave, S
Cornelis, K
Drosdal, L
Esteban Muller, J
Goddard, B
Guerrero, A
H¨ofle, W
Kain, V
Rumolo, G
Salvant, B
Shaposhnikova, E
Timko, H
Valuch, D
Vanbavinckhove, G
Wenninger, J
Gianfelice-Wendt, E
author_sort Papaphilippou, Y
collection CERN
description An optics in the SPS with lower integer tunes (20 versus 26) was proposed and introduced in machine studies since 2010, as a measure for increasing transverse and longitudinal instability thresholds, especially at low energy, for the LHC proton beams. After two years of machine studies and careful optimisation, the new Q20 optics became operational in September 2012 and steadily delivered beam to the LHC until the end of the run. This paper reviews the operational performance of the Q20 optics with respect to transverse and longitudinal beam characteristics in the SPS, enabling high brightness beams injected into the LHC. Aspects of longitudinal beam stability, transmission, high-energy orbit control and beam transfer are discussed.
id cern-1581446
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2013
record_format invenio
spelling cern-15814462019-09-30T06:29:59Zhttp://cds.cern.ch/record/1581446engPapaphilippou, YArduini, GArgyropoulos, TBartmann, WBartosik, HBohl, TBracco, CCettour-Cave, SCornelis, KDrosdal, LEsteban Muller, JGoddard, BGuerrero, AH¨ofle, WKain, VRumolo, GSalvant, BShaposhnikova, ETimko, HValuch, DVanbavinckhove, GWenninger, JGianfelice-Wendt, EOperational Performance of the LHC Proton Beams with the SPS Low Transition Energy OpticsAccelerators and Storage RingsAn optics in the SPS with lower integer tunes (20 versus 26) was proposed and introduced in machine studies since 2010, as a measure for increasing transverse and longitudinal instability thresholds, especially at low energy, for the LHC proton beams. After two years of machine studies and careful optimisation, the new Q20 optics became operational in September 2012 and steadily delivered beam to the LHC until the end of the run. This paper reviews the operational performance of the Q20 optics with respect to transverse and longitudinal beam characteristics in the SPS, enabling high brightness beams injected into the LHC. Aspects of longitudinal beam stability, transmission, high-energy orbit control and beam transfer are discussed.CERN-ACC-2013-0124FERMILAB-CONF-13-176-APCoai:cds.cern.ch:15814462013-05-12
spellingShingle Accelerators and Storage Rings
Papaphilippou, Y
Arduini, G
Argyropoulos, T
Bartmann, W
Bartosik, H
Bohl, T
Bracco, C
Cettour-Cave, S
Cornelis, K
Drosdal, L
Esteban Muller, J
Goddard, B
Guerrero, A
H¨ofle, W
Kain, V
Rumolo, G
Salvant, B
Shaposhnikova, E
Timko, H
Valuch, D
Vanbavinckhove, G
Wenninger, J
Gianfelice-Wendt, E
Operational Performance of the LHC Proton Beams with the SPS Low Transition Energy Optics
title Operational Performance of the LHC Proton Beams with the SPS Low Transition Energy Optics
title_full Operational Performance of the LHC Proton Beams with the SPS Low Transition Energy Optics
title_fullStr Operational Performance of the LHC Proton Beams with the SPS Low Transition Energy Optics
title_full_unstemmed Operational Performance of the LHC Proton Beams with the SPS Low Transition Energy Optics
title_short Operational Performance of the LHC Proton Beams with the SPS Low Transition Energy Optics
title_sort operational performance of the lhc proton beams with the sps low transition energy optics
topic Accelerators and Storage Rings
url http://cds.cern.ch/record/1581446
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