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Beam losses from ultra-peripheral nuclear collisions between $^{208}$Pb$^{82+}$ ions in the Large Hadron Collider and their alleviation

Electromagnetic interactions between colliding heavy ions at the Large Hadron Collider (LHC) at CERN will give rise to localized beam losses that may quench superconducting magnets, apart from contributing significantly to the luminosity decay. To quantify their impact on the operation of the collid...

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Detalles Bibliográficos
Autores principales: Bruce, R., Gilardoni, S., Jowett, J.M., Bocian, D.
Lenguaje:eng
Publicado: 2009
Materias:
Acceso en línea:https://dx.doi.org/10.1103/PhysRevSTAB.12.071002
http://cds.cern.ch/record/1208705
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author Bruce, R.
Gilardoni, S.
Jowett, J.M.
Bocian, D.
author_facet Bruce, R.
Gilardoni, S.
Jowett, J.M.
Bocian, D.
author_sort Bruce, R.
collection CERN
description Electromagnetic interactions between colliding heavy ions at the Large Hadron Collider (LHC) at CERN will give rise to localized beam losses that may quench superconducting magnets, apart from contributing significantly to the luminosity decay. To quantify their impact on the operation of the collider, we have used a three-step simulation approach, which consists of optical tracking, a Monte-Carlo shower simulation and a thermal network model of the heat flow inside a magnet. We present simulation results for the case of Pb ion operation in the LHC, with focus on the ALICE interaction region, and show that the expected heat load during nominal Pb operation is 40% above the quench level. This limits the maximum achievable luminosity. Furthermore, we discuss methods of monitoring the losses and possible ways to alleviate their effect.
id cern-1208705
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2009
record_format invenio
spelling cern-12087052023-05-31T13:21:16Zdoi:10.1103/PhysRevSTAB.12.071002http://cds.cern.ch/record/1208705engBruce, R.Gilardoni, S.Jowett, J.M.Bocian, D.Beam losses from ultra-peripheral nuclear collisions between $^{208}$Pb$^{82+}$ ions in the Large Hadron Collider and their alleviationAccelerators and Storage RingsAccelerators and Storage RingsElectromagnetic interactions between colliding heavy ions at the Large Hadron Collider (LHC) at CERN will give rise to localized beam losses that may quench superconducting magnets, apart from contributing significantly to the luminosity decay. To quantify their impact on the operation of the collider, we have used a three-step simulation approach, which consists of optical tracking, a Monte-Carlo shower simulation and a thermal network model of the heat flow inside a magnet. We present simulation results for the case of Pb ion operation in the LHC, with focus on the ALICE interaction region, and show that the expected heat load during nominal Pb operation is 40% above the quench level. This limits the maximum achievable luminosity. Furthermore, we discuss methods of monitoring the losses and possible ways to alleviate their effect.Electromagnetic interactions between colliding heavy ions at the Large Hadron Collider (LHC) at CERN will give rise to localized beam losses that may quench superconducting magnets, apart from contributing significantly to the luminosity decay. To quantify their impact on the operation of the collider, we have used a three-step simulation approach, which consists of optical tracking, a Monte-Carlo shower simulation and a thermal network model of the heat flow inside a magnet. We present simulation results for the case of Pb ion operation in the LHC, with focus on the ALICE interaction region, and show that the expected heat load during nominal Pb operation is 40% above the quench level. This limits the maximum achievable luminosity. Furthermore, we discuss methods of monitoring the losses and possible ways to alleviate their effect.arXiv:0908.2527FERMILAB-PUB-09-367-TDLHC-PROJECT-Report-1177oai:cds.cern.ch:12087052009-08-18
spellingShingle Accelerators and Storage Rings
Accelerators and Storage Rings
Bruce, R.
Gilardoni, S.
Jowett, J.M.
Bocian, D.
Beam losses from ultra-peripheral nuclear collisions between $^{208}$Pb$^{82+}$ ions in the Large Hadron Collider and their alleviation
title Beam losses from ultra-peripheral nuclear collisions between $^{208}$Pb$^{82+}$ ions in the Large Hadron Collider and their alleviation
title_full Beam losses from ultra-peripheral nuclear collisions between $^{208}$Pb$^{82+}$ ions in the Large Hadron Collider and their alleviation
title_fullStr Beam losses from ultra-peripheral nuclear collisions between $^{208}$Pb$^{82+}$ ions in the Large Hadron Collider and their alleviation
title_full_unstemmed Beam losses from ultra-peripheral nuclear collisions between $^{208}$Pb$^{82+}$ ions in the Large Hadron Collider and their alleviation
title_short Beam losses from ultra-peripheral nuclear collisions between $^{208}$Pb$^{82+}$ ions in the Large Hadron Collider and their alleviation
title_sort beam losses from ultra-peripheral nuclear collisions between $^{208}$pb$^{82+}$ ions in the large hadron collider and their alleviation
topic Accelerators and Storage Rings
Accelerators and Storage Rings
url https://dx.doi.org/10.1103/PhysRevSTAB.12.071002
http://cds.cern.ch/record/1208705
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AT jowettjm beamlossesfromultraperipheralnuclearcollisionsbetween208pb82ionsinthelargehadroncolliderandtheiralleviation
AT bociand beamlossesfromultraperipheralnuclearcollisionsbetween208pb82ionsinthelargehadroncolliderandtheiralleviation