Synchrotron Radiation in the LHC Vacuum System

CERN is currently operating the Large Hadron Collider (LHC) with 3.5 TeV per beam. At this energy level, when the protons trajectory is bent, the protons emit synchrotron radiation (SR) with a critical energy of 5.5 eV. Under operation, SR induced molecular desorption is routinely observed in the LH...

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Detalles Bibliográficos
Autores principales: Baglin, V, Bregliozzi, G, Jimenez, J M, Lanza, G
Lenguaje:eng
Publicado: 2011
Materias:
Accelerators and Storage Rings
Acceso en línea:http://cds.cern.ch/record/1407539
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author Baglin, V
Bregliozzi, G
Jimenez, J M
Lanza, G
author_facet Baglin, V
Bregliozzi, G
Jimenez, J M
Lanza, G
author_sort Baglin, V
collection CERN
description CERN is currently operating the Large Hadron Collider (LHC) with 3.5 TeV per beam. At this energy level, when the protons trajectory is bent, the protons emit synchrotron radiation (SR) with a critical energy of 5.5 eV. Under operation, SR induced molecular desorption is routinely observed in the LHC arcs, long straight sections and experiments. This contribution recalls the SR parameters over the LHC ring for the present and nominal beam parameters. Vacuum observations during energy ramp, after accumulation of dose and along the LHC ring are discussed. Expected pressure profiles and long term behaviours of vacuum levels will be also addressed.
id cern-1407539
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2011
record_format invenio
spelling cern-14075392022-09-12T08:59:38Zhttp://cds.cern.ch/record/1407539engBaglin, VBregliozzi, GJimenez, J MLanza, GSynchrotron Radiation in the LHC Vacuum SystemAccelerators and Storage RingsCERN is currently operating the Large Hadron Collider (LHC) with 3.5 TeV per beam. At this energy level, when the protons trajectory is bent, the protons emit synchrotron radiation (SR) with a critical energy of 5.5 eV. Under operation, SR induced molecular desorption is routinely observed in the LHC arcs, long straight sections and experiments. This contribution recalls the SR parameters over the LHC ring for the present and nominal beam parameters. Vacuum observations during energy ramp, after accumulation of dose and along the LHC ring are discussed. Expected pressure profiles and long term behaviours of vacuum levels will be also addressed.CERN-ATS-2011-245IPAC-2011-TUPS019oai:cds.cern.ch:14075392011-12-01
spellingShingle Accelerators and Storage Rings
Baglin, V
Bregliozzi, G
Jimenez, J M
Lanza, G
Synchrotron Radiation in the LHC Vacuum System
title Synchrotron Radiation in the LHC Vacuum System
title_full Synchrotron Radiation in the LHC Vacuum System
title_fullStr Synchrotron Radiation in the LHC Vacuum System
title_full_unstemmed Synchrotron Radiation in the LHC Vacuum System
title_short Synchrotron Radiation in the LHC Vacuum System
title_sort synchrotron radiation in the lhc vacuum system
topic Accelerators and Storage Rings
url http://cds.cern.ch/record/1407539
work_keys_str_mv AT baglinv synchrotronradiationinthelhcvacuumsystem
AT bregliozzig synchrotronradiationinthelhcvacuumsystem
AT jimenezjm synchrotronradiationinthelhcvacuumsystem
AT lanzag synchrotronradiationinthelhcvacuumsystem

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