Electron Cloud Observations during LHC Operation with 25 ns Beams

While during the Run 1 (2010-2012) of the Large Hadron Collider (LHC) most of the integrated luminosity was produced with 50 ns bunch spacing, for the Run 2 start-up (2015) it was decided to move to the nominal bunch spacing of 25 ns. As expected, with this beam configuration strong electron cloud e...

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Detalles Bibliográficos
Autores principales: Li, Kevin, Bartosik, Hannes, Iadarola, Giovanni, Mether, Lotta, Romano, Annalisa, Rumolo, Giovanni, Schenk, Michael
Lenguaje:eng
Publicado: 2016
Materias:
Accelerators and Storage Rings
Acceso en línea:https://dx.doi.org/10.18429/JACoW-IPAC2016-TUPMW017
http://cds.cern.ch/record/2207370
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author Li, Kevin
Bartosik, Hannes
Iadarola, Giovanni
Mether, Lotta
Romano, Annalisa
Rumolo, Giovanni
Schenk, Michael
author_facet Li, Kevin
Bartosik, Hannes
Iadarola, Giovanni
Mether, Lotta
Romano, Annalisa
Rumolo, Giovanni
Schenk, Michael
author_sort Li, Kevin
collection CERN
description While during the Run 1 (2010-2012) of the Large Hadron Collider (LHC) most of the integrated luminosity was produced with 50 ns bunch spacing, for the Run 2 start-up (2015) it was decided to move to the nominal bunch spacing of 25 ns. As expected, with this beam configuration strong electron cloud effects were observed in the machine, which had to be mitigated with dedicated 'scrubbing' periods at injection energy. This enabled to start the operation with 25 ns beams at 6.5 TeV, but e-cloud effects continued to pose challenges while gradually increasing the number of circulating bunch trains. This contribution will review the encountered limitations and the mitigation measures that where put in place and will discuss possible strategies for further performance gain.
id oai-inspirehep.net-1469929
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2016
record_format invenio
spelling oai-inspirehep.net-14699292022-08-10T12:47:55Zdoi:10.18429/JACoW-IPAC2016-TUPMW017http://cds.cern.ch/record/2207370engLi, KevinBartosik, HannesIadarola, GiovanniMether, LottaRomano, AnnalisaRumolo, GiovanniSchenk, MichaelElectron Cloud Observations during LHC Operation with 25 ns BeamsAccelerators and Storage RingsWhile during the Run 1 (2010-2012) of the Large Hadron Collider (LHC) most of the integrated luminosity was produced with 50 ns bunch spacing, for the Run 2 start-up (2015) it was decided to move to the nominal bunch spacing of 25 ns. As expected, with this beam configuration strong electron cloud effects were observed in the machine, which had to be mitigated with dedicated 'scrubbing' periods at injection energy. This enabled to start the operation with 25 ns beams at 6.5 TeV, but e-cloud effects continued to pose challenges while gradually increasing the number of circulating bunch trains. This contribution will review the encountered limitations and the mitigation measures that where put in place and will discuss possible strategies for further performance gain.CERN-ACC-2016-255oai:inspirehep.net:14699292016
spellingShingle Accelerators and Storage Rings
Li, Kevin
Bartosik, Hannes
Iadarola, Giovanni
Mether, Lotta
Romano, Annalisa
Rumolo, Giovanni
Schenk, Michael
Electron Cloud Observations during LHC Operation with 25 ns Beams
title Electron Cloud Observations during LHC Operation with 25 ns Beams
title_full Electron Cloud Observations during LHC Operation with 25 ns Beams
title_fullStr Electron Cloud Observations during LHC Operation with 25 ns Beams
title_full_unstemmed Electron Cloud Observations during LHC Operation with 25 ns Beams
title_short Electron Cloud Observations during LHC Operation with 25 ns Beams
title_sort electron cloud observations during lhc operation with 25 ns beams
topic Accelerators and Storage Rings
url https://dx.doi.org/10.18429/JACoW-IPAC2016-TUPMW017
http://cds.cern.ch/record/2207370
work_keys_str_mv AT likevin electroncloudobservationsduringlhcoperationwith25nsbeams
AT bartosikhannes electroncloudobservationsduringlhcoperationwith25nsbeams
AT iadarolagiovanni electroncloudobservationsduringlhcoperationwith25nsbeams
AT metherlotta electroncloudobservationsduringlhcoperationwith25nsbeams
AT romanoannalisa electroncloudobservationsduringlhcoperationwith25nsbeams
AT rumologiovanni electroncloudobservationsduringlhcoperationwith25nsbeams
AT schenkmichael electroncloudobservationsduringlhcoperationwith25nsbeams

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