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LHC Operational Experience of the 6.5 TeV Proton Run with ATS Optics

In May 2017, the CERN Large Hadron Collider (LHC) restarted operations at 6.5 TeV using the Achromatic Telescopic Squeeze (ATS) scheme with a target beta-star of 40 cm in ATLAS and CMS. The number of bunches was progressively increased to a maximum of 2556 with emittances of 2.5 um. In August, sever...

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Detalles Bibliográficos
Autores principales: Pojer, Mirko, Albert, Markus, Alemany-Fernández, Reyes, Argyropoulos, Theodoros, Bravin, Enrico, Calia, Andrea, Crockford, Guy, Fartoukh, Stephane, Fuchsberger, Kajetan, Giachino, Rossano, Giovannozzi, Massimo, Hemelsoet, Georges-Henry, Hostettler, Michael, Höfle, Wolfgang, Le Borgne, Yannick, Nisbet, David, Ponce, Laurette, Redaelli, Stefano, Salvachua, Belen, Solfaroli, Matteo, Suykerbuyk, Ronaldus, Walsh, David, Wenninger, Jorg, Zerlauth, Markus
Lenguaje:eng
Publicado: 2018
Materias:
Acceso en línea:https://dx.doi.org/10.18429/JACoW-IPAC2018-MOPMF050
http://cds.cern.ch/record/2646065
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author Pojer, Mirko
Albert, Markus
Alemany-Fernández, Reyes
Argyropoulos, Theodoros
Bravin, Enrico
Calia, Andrea
Crockford, Guy
Fartoukh, Stephane
Fuchsberger, Kajetan
Giachino, Rossano
Giovannozzi, Massimo
Hemelsoet, Georges-Henry
Hostettler, Michael
Höfle, Wolfgang
Le Borgne, Yannick
Nisbet, David
Ponce, Laurette
Redaelli, Stefano
Salvachua, Belen
Solfaroli, Matteo
Suykerbuyk, Ronaldus
Walsh, David
Wenninger, Jorg
Zerlauth, Markus
author_facet Pojer, Mirko
Albert, Markus
Alemany-Fernández, Reyes
Argyropoulos, Theodoros
Bravin, Enrico
Calia, Andrea
Crockford, Guy
Fartoukh, Stephane
Fuchsberger, Kajetan
Giachino, Rossano
Giovannozzi, Massimo
Hemelsoet, Georges-Henry
Hostettler, Michael
Höfle, Wolfgang
Le Borgne, Yannick
Nisbet, David
Ponce, Laurette
Redaelli, Stefano
Salvachua, Belen
Solfaroli, Matteo
Suykerbuyk, Ronaldus
Walsh, David
Wenninger, Jorg
Zerlauth, Markus
author_sort Pojer, Mirko
collection CERN
description In May 2017, the CERN Large Hadron Collider (LHC) restarted operations at 6.5 TeV using the Achromatic Telescopic Squeeze (ATS) scheme with a target beta-star of 40 cm in ATLAS and CMS. The number of bunches was progressively increased to a maximum of 2556 with emittances of 2.5 um. In August, several machine parameters had to be re-tuned to mitigate beam loss induced instabilities and maintain a steady increase of the instantaneous luminosity. The use of a novel beam type and filling pattern produced in the injectors, allowed filling the machine with very low emittance beam (1.5 um) achieving an equivalent luminosity with 1868 bunches. In September, the beta-star was further lowered to 30 cm (using, for the first time, the telescopic technique of the ATS) and the bunch intensity pushed to 1.25·10¹¹ protons. In the last 3 months of 2017, the LHC produced more than 500 pb-1 of integrated luminosity per day, delivering to each of the high luminosity experiments 50.6 fb-1, 10% above the 2017 target. A general overview of the operational aspects of the 2017 proton run will be presented.
id oai-inspirehep.net-1691339
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2018
record_format invenio
spelling oai-inspirehep.net-16913392019-09-30T06:29:59Zdoi:10.18429/JACoW-IPAC2018-MOPMF050http://cds.cern.ch/record/2646065engPojer, MirkoAlbert, MarkusAlemany-Fernández, ReyesArgyropoulos, TheodorosBravin, EnricoCalia, AndreaCrockford, GuyFartoukh, StephaneFuchsberger, KajetanGiachino, RossanoGiovannozzi, MassimoHemelsoet, Georges-HenryHostettler, MichaelHöfle, WolfgangLe Borgne, YannickNisbet, DavidPonce, LauretteRedaelli, StefanoSalvachua, BelenSolfaroli, MatteoSuykerbuyk, RonaldusWalsh, DavidWenninger, JorgZerlauth, MarkusLHC Operational Experience of the 6.5 TeV Proton Run with ATS OpticsAccelerators and Storage RingsIn May 2017, the CERN Large Hadron Collider (LHC) restarted operations at 6.5 TeV using the Achromatic Telescopic Squeeze (ATS) scheme with a target beta-star of 40 cm in ATLAS and CMS. The number of bunches was progressively increased to a maximum of 2556 with emittances of 2.5 um. In August, several machine parameters had to be re-tuned to mitigate beam loss induced instabilities and maintain a steady increase of the instantaneous luminosity. The use of a novel beam type and filling pattern produced in the injectors, allowed filling the machine with very low emittance beam (1.5 um) achieving an equivalent luminosity with 1868 bunches. In September, the beta-star was further lowered to 30 cm (using, for the first time, the telescopic technique of the ATS) and the bunch intensity pushed to 1.25·10¹¹ protons. In the last 3 months of 2017, the LHC produced more than 500 pb-1 of integrated luminosity per day, delivering to each of the high luminosity experiments 50.6 fb-1, 10% above the 2017 target. A general overview of the operational aspects of the 2017 proton run will be presented.CERN-ACC-2018-166oai:inspirehep.net:16913392018
spellingShingle Accelerators and Storage Rings
Pojer, Mirko
Albert, Markus
Alemany-Fernández, Reyes
Argyropoulos, Theodoros
Bravin, Enrico
Calia, Andrea
Crockford, Guy
Fartoukh, Stephane
Fuchsberger, Kajetan
Giachino, Rossano
Giovannozzi, Massimo
Hemelsoet, Georges-Henry
Hostettler, Michael
Höfle, Wolfgang
Le Borgne, Yannick
Nisbet, David
Ponce, Laurette
Redaelli, Stefano
Salvachua, Belen
Solfaroli, Matteo
Suykerbuyk, Ronaldus
Walsh, David
Wenninger, Jorg
Zerlauth, Markus
LHC Operational Experience of the 6.5 TeV Proton Run with ATS Optics
title LHC Operational Experience of the 6.5 TeV Proton Run with ATS Optics
title_full LHC Operational Experience of the 6.5 TeV Proton Run with ATS Optics
title_fullStr LHC Operational Experience of the 6.5 TeV Proton Run with ATS Optics
title_full_unstemmed LHC Operational Experience of the 6.5 TeV Proton Run with ATS Optics
title_short LHC Operational Experience of the 6.5 TeV Proton Run with ATS Optics
title_sort lhc operational experience of the 6.5 tev proton run with ats optics
topic Accelerators and Storage Rings
url https://dx.doi.org/10.18429/JACoW-IPAC2018-MOPMF050
http://cds.cern.ch/record/2646065
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