Alternative Working Point(s) for the LHC

At present, the LHC operates with a different fractional tunes at injection and at collision energy due to improved dynamic aperture indicated by tracking studies. Therefore, a tune swing crossing the 10th order resonance is needed during the beta-squeeze. A new proposal to alter the working point t...

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Detalles Bibliográficos
Autores principales: Calaga, R, Langner, A, Miyamoto, R, Tomas, R, Vanbavinckhove, G, White, S
Lenguaje:eng
Publicado: 2011
Materias:
Accelerators and Storage Rings
Acceso en línea:http://cds.cern.ch/record/1382056
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author Calaga, R
Langner, A
Miyamoto, R
Tomas, R
Vanbavinckhove, G
White, S
author_facet Calaga, R
Langner, A
Miyamoto, R
Tomas, R
Vanbavinckhove, G
White, S
author_sort Calaga, R
collection CERN
description At present, the LHC operates with a different fractional tunes at injection and at collision energy due to improved dynamic aperture indicated by tracking studies. Therefore, a tune swing crossing the 10th order resonance is needed during the beta-squeeze. A new proposal to alter the working point to collision tunes already at injection and during an energy ramp is foreseen to avoid the tune jump. Simulations and measurements of the optics along with the beam emittances and lifetime are compared to the nominal injection tunes. Feasibility for a working point close to the 1/2 integer is also attempted.
id cern-1382056
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2011
record_format invenio
spelling cern-13820562022-08-17T13:27:06Zhttp://cds.cern.ch/record/1382056engCalaga, RLangner, AMiyamoto, RTomas, RVanbavinckhove, GWhite, SAlternative Working Point(s) for the LHCAccelerators and Storage RingsAt present, the LHC operates with a different fractional tunes at injection and at collision energy due to improved dynamic aperture indicated by tracking studies. Therefore, a tune swing crossing the 10th order resonance is needed during the beta-squeeze. A new proposal to alter the working point to collision tunes already at injection and during an energy ramp is foreseen to avoid the tune jump. Simulations and measurements of the optics along with the beam emittances and lifetime are compared to the nominal injection tunes. Feasibility for a working point close to the 1/2 integer is also attempted.CERN-ATS-2011-148oai:cds.cern.ch:13820562011-09-14
spellingShingle Accelerators and Storage Rings
Calaga, R
Langner, A
Miyamoto, R
Tomas, R
Vanbavinckhove, G
White, S
Alternative Working Point(s) for the LHC
title Alternative Working Point(s) for the LHC
title_full Alternative Working Point(s) for the LHC
title_fullStr Alternative Working Point(s) for the LHC
title_full_unstemmed Alternative Working Point(s) for the LHC
title_short Alternative Working Point(s) for the LHC
title_sort alternative working point(s) for the lhc
topic Accelerators and Storage Rings
url http://cds.cern.ch/record/1382056
work_keys_str_mv AT calagar alternativeworkingpointsforthelhc
AT langnera alternativeworkingpointsforthelhc
AT miyamotor alternativeworkingpointsforthelhc
AT tomasr alternativeworkingpointsforthelhc
AT vanbavinckhoveg alternativeworkingpointsforthelhc
AT whites alternativeworkingpointsforthelhc

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