Optics control in 2016

In 2016 the fi-functions at the interaction points of ATLAS and CMS have been squeezed down to 0.4 m. This is below the design fi" = 0.55 m at 7 TeV and has been instrumental to surpass the design luminosity. Even though the fl-beating for the virgin machine was above 100% the corrections reduc...

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Detalles Bibliográficos
Autores principales: Persson, T, Baud, G, Carlier, F, Coello De Portugal, J, Fol, E, A, Valdivieso, Garcia-Tabares, Gasior, M, Langner, A, Maclean, E H, Malina, L, Olexa, I, Skowronski, P, Tomas, R, Valuch, D, Wegscheider, A, Switzerland, Geneva
Lenguaje:eng
Publicado: CERN 2017
Materias:
Accelerators and Storage Rings
Acceso en línea:http://cds.cern.ch/record/2293516
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author Persson, T
Baud, G
Carlier, F
Coello De Portugal, J
Fol, E
A
Valdivieso, Garcia-Tabares
Gasior, M
Langner, A
Maclean, E H
Malina, L
Olexa, I
Skowronski, P
Tomas, R
Valuch, D
Wegscheider, A
Switzerland, Geneva
author_facet Persson, T
Baud, G
Carlier, F
Coello De Portugal, J
Fol, E
A
Valdivieso, Garcia-Tabares
Gasior, M
Langner, A
Maclean, E H
Malina, L
Olexa, I
Skowronski, P
Tomas, R
Valuch, D
Wegscheider, A
Switzerland, Geneva
author_sort Persson, T
collection CERN
description In 2016 the fi-functions at the interaction points of ATLAS and CMS have been squeezed down to 0.4 m. This is below the design fi" = 0.55 m at 7 TeV and has been instrumental to surpass the design luminosity. Even though the fl-beating for the virgin machine was above 100% the corrections reduced it to an rms B-beating below 1% at the two main experiments and below 2% rms around the ring. These results are presented together with the fl-beating deriving from the crossing angles in combination with the sextupolar errors in the IRs. A way to correct the errors using sextupo-lar correctors is referenced and how this could be integrated in the commissioning is outlined. Furthermore. the progress towards an automatic coupling correction is described.
id oai-inspirehep.net-1635429
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2017
publisher CERN
record_format invenio
spelling oai-inspirehep.net-16354292019-09-30T06:29:59Zhttp://cds.cern.ch/record/2293516engPersson, TBaud, GCarlier, FCoello De Portugal, JFol, EAValdivieso, Garcia-TabaresGasior, MLangner, AMaclean, E HMalina, LOlexa, ISkowronski, PTomas, RValuch, DWegscheider, ASwitzerland, GenevaOptics control in 2016Accelerators and Storage RingsIn 2016 the fi-functions at the interaction points of ATLAS and CMS have been squeezed down to 0.4 m. This is below the design fi" = 0.55 m at 7 TeV and has been instrumental to surpass the design luminosity. Even though the fl-beating for the virgin machine was above 100% the corrections reduced it to an rms B-beating below 1% at the two main experiments and below 2% rms around the ring. These results are presented together with the fl-beating deriving from the crossing angles in combination with the sextupolar errors in the IRs. A way to correct the errors using sextupo-lar correctors is referenced and how this could be integrated in the commissioning is outlined. Furthermore. the progress towards an automatic coupling correction is described.CERNoai:inspirehep.net:16354292017
spellingShingle Accelerators and Storage Rings
Persson, T
Baud, G
Carlier, F
Coello De Portugal, J
Fol, E
A
Valdivieso, Garcia-Tabares
Gasior, M
Langner, A
Maclean, E H
Malina, L
Olexa, I
Skowronski, P
Tomas, R
Valuch, D
Wegscheider, A
Switzerland, Geneva
Optics control in 2016
title Optics control in 2016
title_full Optics control in 2016
title_fullStr Optics control in 2016
title_full_unstemmed Optics control in 2016
title_short Optics control in 2016
title_sort optics control in 2016
topic Accelerators and Storage Rings
url http://cds.cern.ch/record/2293516
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AT baudg opticscontrolin2016
AT carlierf opticscontrolin2016
AT coellodeportugalj opticscontrolin2016
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AT gasiorm opticscontrolin2016
AT langnera opticscontrolin2016
AT macleaneh opticscontrolin2016
AT malinal opticscontrolin2016
AT olexai opticscontrolin2016
AT skowronskip opticscontrolin2016
AT tomasr opticscontrolin2016
AT valuchd opticscontrolin2016
AT wegscheidera opticscontrolin2016
AT switzerlandgeneva opticscontrolin2016

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