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Protecting LHC IP1/IP5 Components Against Radiation Resulting from Colliding Beam Interactions

Beam-induced energy deposition in the LHC high luminosity interaction region (IR) components due to both pp collisions and beam loss in the IR vicinity is a significant challenge for the design of the high luminosity insertions. It was shown in our previous studies that a set of absorbers would redu...

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Detalles Bibliográficos
Autores principales: Mokhov, N V, Rakhno, I L, Kerby, J S, Strait, J B
Lenguaje:eng
Publicado: 2003
Materias:
Acceso en línea:http://cds.cern.ch/record/613167
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author Mokhov, N V
Rakhno, I L
Kerby, J S
Strait, J B
author_facet Mokhov, N V
Rakhno, I L
Kerby, J S
Strait, J B
author_sort Mokhov, N V
collection CERN
description Beam-induced energy deposition in the LHC high luminosity interaction region (IR) components due to both pp collisions and beam loss in the IR vicinity is a significant challenge for the design of the high luminosity insertions. It was shown in our previous studies that a set of absorbers would reduce both the peak power density and total heat load to tolerable levels. In this paper the results of further optimization and comprehensive MARS calculations are summarized for the LHC lattice, version 6.4, for the updated IP1 and IP5 layouts and a baseline pp-collision source term. Power density, power dissipation, particle fluxes and spectra, accumulated dose and residual dose rates are studied in the components of the inner triplets including their TAS absorbers, the TAN neutral beam absorbers, separation dipoles, and quadrupoles of the outer triplets and possible collimators there. Results are given for the nominal luminosity of 1034 cm-2 s-1. The current design is proved to provide the best safety margin under realistic engineering constraints. Consideration is limited to luminosity driven energy deposition effects in the inner and outer triplets. Impact of beam loss of circulating and misbehaved beams on the machine and detector components is considered elsewhere.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2003
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spelling cern-6131672023-05-31T13:22:14Zhttp://cds.cern.ch/record/613167engMokhov, N VRakhno, I LKerby, J SStrait, J BProtecting LHC IP1/IP5 Components Against Radiation Resulting from Colliding Beam InteractionsAccelerators and Storage RingsBeam-induced energy deposition in the LHC high luminosity interaction region (IR) components due to both pp collisions and beam loss in the IR vicinity is a significant challenge for the design of the high luminosity insertions. It was shown in our previous studies that a set of absorbers would reduce both the peak power density and total heat load to tolerable levels. In this paper the results of further optimization and comprehensive MARS calculations are summarized for the LHC lattice, version 6.4, for the updated IP1 and IP5 layouts and a baseline pp-collision source term. Power density, power dissipation, particle fluxes and spectra, accumulated dose and residual dose rates are studied in the components of the inner triplets including their TAS absorbers, the TAN neutral beam absorbers, separation dipoles, and quadrupoles of the outer triplets and possible collimators there. Results are given for the nominal luminosity of 1034 cm-2 s-1. The current design is proved to provide the best safety margin under realistic engineering constraints. Consideration is limited to luminosity driven energy deposition effects in the inner and outer triplets. Impact of beam loss of circulating and misbehaved beams on the machine and detector components is considered elsewhere.LHC-Project-Report-633FERMILAB-FN-0732CERN-LHC-Project-Report-633oai:cds.cern.ch:6131672003-04-17
spellingShingle Accelerators and Storage Rings
Mokhov, N V
Rakhno, I L
Kerby, J S
Strait, J B
Protecting LHC IP1/IP5 Components Against Radiation Resulting from Colliding Beam Interactions
title Protecting LHC IP1/IP5 Components Against Radiation Resulting from Colliding Beam Interactions
title_full Protecting LHC IP1/IP5 Components Against Radiation Resulting from Colliding Beam Interactions
title_fullStr Protecting LHC IP1/IP5 Components Against Radiation Resulting from Colliding Beam Interactions
title_full_unstemmed Protecting LHC IP1/IP5 Components Against Radiation Resulting from Colliding Beam Interactions
title_short Protecting LHC IP1/IP5 Components Against Radiation Resulting from Colliding Beam Interactions
title_sort protecting lhc ip1/ip5 components against radiation resulting from colliding beam interactions
topic Accelerators and Storage Rings
url http://cds.cern.ch/record/613167
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AT rakhnoil protectinglhcip1ip5componentsagainstradiationresultingfromcollidingbeaminteractions
AT kerbyjs protectinglhcip1ip5componentsagainstradiationresultingfromcollidingbeaminteractions
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