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Heat Flow Measurements on LHC Components

The refrigeration and liquefaction capacity necessary to operate at 1.9 K the 27 km long string of superconducting magnets of the LHC has been determined on the basis of heat load estimates, including static heat inleaks from ambient temperature, resistive heating and dynamic beam-induced heat loads...

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Detalles Bibliográficos
Autores principales: Camacho, D, Chevassus, S, Ferlin, G, Pangallo, M, Policella, C, Rieubland, Jean Michel, Simon, L, Vandoni, Giovanna
Lenguaje:eng
Publicado: 1999
Materias:
Acceso en línea:http://cds.cern.ch/record/410390
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author Camacho, D
Chevassus, S
Ferlin, G
Pangallo, M
Policella, C
Rieubland, Jean Michel
Simon, L
Vandoni, Giovanna
author_facet Camacho, D
Chevassus, S
Ferlin, G
Pangallo, M
Policella, C
Rieubland, Jean Michel
Simon, L
Vandoni, Giovanna
author_sort Camacho, D
collection CERN
description The refrigeration and liquefaction capacity necessary to operate at 1.9 K the 27 km long string of superconducting magnets of the LHC has been determined on the basis of heat load estimates, including static heat inleaks from ambient temperature, resistive heating and dynamic beam-induced heat loads. At all temperature levels, the static heat inleaks determine at least one third of the total heat loads in nominal operating conditions of the machine. Design validation of individual cryocomponents therefore requires a correct estimate of the heat inleaks they induce at all temperature levels, in order not to exceed the allocated heat budget. This paper illustrates the measurements of heat inleaks for several cold components of the future machine, including insulating supports, radiation shields, multi-layer insulation, instrumentation current leads. Distinct methods to determine the heat flow are chosen, depending on the expected heat loads, the temperature range spanned by the heat intercepts, and the working conditions of the component itself.
id cern-410390
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1999
record_format invenio
spelling cern-4103902023-05-31T13:22:10Zhttp://cds.cern.ch/record/410390engCamacho, DChevassus, SFerlin, GPangallo, MPolicella, CRieubland, Jean MichelSimon, LVandoni, GiovannaHeat Flow Measurements on LHC ComponentsAccelerators and Storage RingsThe refrigeration and liquefaction capacity necessary to operate at 1.9 K the 27 km long string of superconducting magnets of the LHC has been determined on the basis of heat load estimates, including static heat inleaks from ambient temperature, resistive heating and dynamic beam-induced heat loads. At all temperature levels, the static heat inleaks determine at least one third of the total heat loads in nominal operating conditions of the machine. Design validation of individual cryocomponents therefore requires a correct estimate of the heat inleaks they induce at all temperature levels, in order not to exceed the allocated heat budget. This paper illustrates the measurements of heat inleaks for several cold components of the future machine, including insulating supports, radiation shields, multi-layer insulation, instrumentation current leads. Distinct methods to determine the heat flow are chosen, depending on the expected heat loads, the temperature range spanned by the heat intercepts, and the working conditions of the component itself.LHC-Project-Report-329CERN-LHC-Project-Report-329oai:cds.cern.ch:4103901999-12-01
spellingShingle Accelerators and Storage Rings
Camacho, D
Chevassus, S
Ferlin, G
Pangallo, M
Policella, C
Rieubland, Jean Michel
Simon, L
Vandoni, Giovanna
Heat Flow Measurements on LHC Components
title Heat Flow Measurements on LHC Components
title_full Heat Flow Measurements on LHC Components
title_fullStr Heat Flow Measurements on LHC Components
title_full_unstemmed Heat Flow Measurements on LHC Components
title_short Heat Flow Measurements on LHC Components
title_sort heat flow measurements on lhc components
topic Accelerators and Storage Rings
url http://cds.cern.ch/record/410390
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AT ferling heatflowmeasurementsonlhccomponents
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