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The Cryogenic Design of the Phase I Upgrade Inner Triplet Magnets for LHC

The LHC is operating with beam since end 2009. However, with the present interaction region magnets it cannot reach its nominal performance and a phased approach to upgrading them to reach that nominal performance is taken. The first phase of the LHC interaction region upgrade was approved by Counci...

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Detalles Bibliográficos
Autores principales: van Weelderen, R, Vullierme, B, Peterson, T
Lenguaje:eng
Publicado: 2011
Materias:
Acceso en línea:http://cds.cern.ch/record/1377045
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author van Weelderen, R
Vullierme, B
Peterson, T
author_facet van Weelderen, R
Vullierme, B
Peterson, T
author_sort van Weelderen, R
collection CERN
description The LHC is operating with beam since end 2009. However, with the present interaction region magnets it cannot reach its nominal performance and a phased approach to upgrading them to reach that nominal performance is taken. The first phase of the LHC interaction region upgrade was approved by Council in December 2007. This phase relies on the mature Nb-Ti superconducting magnet technology with the target of increasing the LHC luminosity to 2 to 3×1034 cm-2s-1, while relying on the existing infrastructure which limits the total heat removal capacity at 1.9 K to 500 W. The Phase I Upgrade LHC interaction region final focus magnets will include four superconducting quadrupoles (low-β triplets) and one superconducting dipole (D1) cooled with pressurized, static superfluid helium (HeII) at 1.9 K. The heat absorbed in pressurized HeII, which may be more than 30 W/m due to dynamic heating from the particle beam halo, will be conducted to saturated He II at about 1.9 K and removed by the low pressure vapour. This paper discusses the conceptual design for the cryogenics of the Phase I Upgrade interaction region superconducting magnets and the integration of this magnet system into the overall LHC cryogenic system
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2011
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spelling cern-13770452019-09-30T06:29:59Zhttp://cds.cern.ch/record/1377045engvan Weelderen, RVullierme, BPeterson, TThe Cryogenic Design of the Phase I Upgrade Inner Triplet Magnets for LHCAccelerators and Storage RingsThe LHC is operating with beam since end 2009. However, with the present interaction region magnets it cannot reach its nominal performance and a phased approach to upgrading them to reach that nominal performance is taken. The first phase of the LHC interaction region upgrade was approved by Council in December 2007. This phase relies on the mature Nb-Ti superconducting magnet technology with the target of increasing the LHC luminosity to 2 to 3×1034 cm-2s-1, while relying on the existing infrastructure which limits the total heat removal capacity at 1.9 K to 500 W. The Phase I Upgrade LHC interaction region final focus magnets will include four superconducting quadrupoles (low-β triplets) and one superconducting dipole (D1) cooled with pressurized, static superfluid helium (HeII) at 1.9 K. The heat absorbed in pressurized HeII, which may be more than 30 W/m due to dynamic heating from the particle beam halo, will be conducted to saturated He II at about 1.9 K and removed by the low pressure vapour. This paper discusses the conceptual design for the cryogenics of the Phase I Upgrade interaction region superconducting magnets and the integration of this magnet system into the overall LHC cryogenic systemCERN-ATS-2011-020oai:cds.cern.ch:13770452011-08-01
spellingShingle Accelerators and Storage Rings
van Weelderen, R
Vullierme, B
Peterson, T
The Cryogenic Design of the Phase I Upgrade Inner Triplet Magnets for LHC
title The Cryogenic Design of the Phase I Upgrade Inner Triplet Magnets for LHC
title_full The Cryogenic Design of the Phase I Upgrade Inner Triplet Magnets for LHC
title_fullStr The Cryogenic Design of the Phase I Upgrade Inner Triplet Magnets for LHC
title_full_unstemmed The Cryogenic Design of the Phase I Upgrade Inner Triplet Magnets for LHC
title_short The Cryogenic Design of the Phase I Upgrade Inner Triplet Magnets for LHC
title_sort cryogenic design of the phase i upgrade inner triplet magnets for lhc
topic Accelerators and Storage Rings
url http://cds.cern.ch/record/1377045
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