The Magnetic Field Model of the Large Hadron Collider: Overview of Operation at 3.5 and 4 TeV

The magnetic model of the LHC is based on a fit of the magnetic measurements through equations that model the field components (geometric, saturation, persistent) at different currents. In this paper we will review the main results related to the magnetic model during the run of the LHC in 2010...

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Detalles Bibliográficos
Autores principales: Todesco, E, Aquilina, N, Fiscarelli, L, Garcia Tomás, R, Giovannozzi, M, Hagen, P, Lamont, M, Maclean, E, Redaelli, S, Schmidt, F, Strzelczyk, M, Walckiers, L, Wenninger, J, Sammut, N
Lenguaje:eng
Publicado: 2012
Materias:
Accelerators and Storage Rings
Acceso en línea:http://cds.cern.ch/record/1470324
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author Todesco, E
Aquilina, N
Fiscarelli, L
Garcia Tomás, R
Giovannozzi, M
Hagen, P
Lamont, M
Maclean, E
Redaelli, S
Schmidt, F
Strzelczyk, M
Walckiers, L
Wenninger, J
Sammut, N
author_facet Todesco, E
Aquilina, N
Fiscarelli, L
Garcia Tomás, R
Giovannozzi, M
Hagen, P
Lamont, M
Maclean, E
Redaelli, S
Schmidt, F
Strzelczyk, M
Walckiers, L
Wenninger, J
Sammut, N
author_sort Todesco, E
collection CERN
description The magnetic model of the LHC is based on a fit of the magnetic measurements through equations that model the field components (geometric, saturation, persistent) at different currents. In this paper we will review the main results related to the magnetic model during the run of the LHC in 2010-2011: with a top energy of 3.5 TeV, all components of the model but the saturation are visible. We first review the main results relative to the decay at injection plateau, dependence on powering history, and snapback at the beginning of the ramp for both tune and chromaticity. We discuss the precision obtained in tracking the magnets during the ramp, where the persistent current components gradually disappear. We conclude by presenting the behaviour of the quadrupoles model during the squeeze.
id cern-1470324
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2012
record_format invenio
spelling cern-14703242022-08-17T13:30:20Zhttp://cds.cern.ch/record/1470324engTodesco, EAquilina, NFiscarelli, LGarcia Tomás, RGiovannozzi, MHagen, PLamont, MMaclean, ERedaelli, SSchmidt, FStrzelczyk, MWalckiers, LWenninger, JSammut, NThe Magnetic Field Model of the Large Hadron Collider: Overview of Operation at 3.5 and 4 TeVAccelerators and Storage RingsThe magnetic model of the LHC is based on a fit of the magnetic measurements through equations that model the field components (geometric, saturation, persistent) at different currents. In this paper we will review the main results related to the magnetic model during the run of the LHC in 2010-2011: with a top energy of 3.5 TeV, all components of the model but the saturation are visible. We first review the main results relative to the decay at injection plateau, dependence on powering history, and snapback at the beginning of the ramp for both tune and chromaticity. We discuss the precision obtained in tracking the magnets during the ramp, where the persistent current components gradually disappear. We conclude by presenting the behaviour of the quadrupoles model during the squeeze.CERN-ATS-2012-195oai:cds.cern.ch:14703242012-08-01
spellingShingle Accelerators and Storage Rings
Todesco, E
Aquilina, N
Fiscarelli, L
Garcia Tomás, R
Giovannozzi, M
Hagen, P
Lamont, M
Maclean, E
Redaelli, S
Schmidt, F
Strzelczyk, M
Walckiers, L
Wenninger, J
Sammut, N
The Magnetic Field Model of the Large Hadron Collider: Overview of Operation at 3.5 and 4 TeV
title The Magnetic Field Model of the Large Hadron Collider: Overview of Operation at 3.5 and 4 TeV
title_full The Magnetic Field Model of the Large Hadron Collider: Overview of Operation at 3.5 and 4 TeV
title_fullStr The Magnetic Field Model of the Large Hadron Collider: Overview of Operation at 3.5 and 4 TeV
title_full_unstemmed The Magnetic Field Model of the Large Hadron Collider: Overview of Operation at 3.5 and 4 TeV
title_short The Magnetic Field Model of the Large Hadron Collider: Overview of Operation at 3.5 and 4 TeV
title_sort magnetic field model of the large hadron collider: overview of operation at 3.5 and 4 tev
topic Accelerators and Storage Rings
url http://cds.cern.ch/record/1470324
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