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A Large Scintillating Screen for the LHC Dump Line

The 7 TeV proton beam from the LHC ring is ejected through a long transfer line to beam dump blocks, approximately 100m downstream of the ejection septa, a series of dilution kicker magnets provide a sweeping deflection spreading the extracted beam over a 40 cm diameter area on the face of the beam...

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Detalles Bibliográficos
Autores principales: Lefèvre, T, Bal, C, Bravin, E, Burger, S, Goddard, B, Hutchins, S, Renaglia, T
Lenguaje:eng
Publicado: 2007
Materias:
Acceso en línea:http://cds.cern.ch/record/1045239
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author Lefèvre, T
Bal, C
Bravin, E
Burger, S
Goddard, B
Hutchins, S
Renaglia, T
author_facet Lefèvre, T
Bal, C
Bravin, E
Burger, S
Goddard, B
Hutchins, S
Renaglia, T
author_sort Lefèvre, T
collection CERN
description The 7 TeV proton beam from the LHC ring is ejected through a long transfer line to beam dump blocks, approximately 100m downstream of the ejection septa, a series of dilution kicker magnets provide a sweeping deflection spreading the extracted beam over a 40 cm diameter area on the face of the beam dump cores. During normal operation, the quality of each dump event must be recorded and verified. The so-called â€ワPost-Mortem” dataset will include information from the beam dumping system (logic signals, kicker pulses…) as well as from the beam diagnostics along the extraction lines. For this purpose, profile monitors in front of the dump blocks must be permanently available during machine operation. With more than 1014 protons stored in LHC, the energy deposited in the screen becomes an issue and thermalresistant materials have to be considered. In this paper, the design of this quite unusual device is presented. The different technical options considered for the choice of the screen material are discussed first. The complete layout of the installation is then described with a special emphasis on the mechanical design, the screen assembly and the choice of the radiation-hard camera used to observe the screen.
id cern-1045239
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2007
record_format invenio
spelling cern-10452392022-08-17T13:35:17Zhttp://cds.cern.ch/record/1045239engLefèvre, TBal, CBravin, EBurger, SGoddard, BHutchins, SRenaglia, TA Large Scintillating Screen for the LHC Dump LineAccelerators and Storage RingsThe 7 TeV proton beam from the LHC ring is ejected through a long transfer line to beam dump blocks, approximately 100m downstream of the ejection septa, a series of dilution kicker magnets provide a sweeping deflection spreading the extracted beam over a 40 cm diameter area on the face of the beam dump cores. During normal operation, the quality of each dump event must be recorded and verified. The so-called â€ワPost-Mortem” dataset will include information from the beam dumping system (logic signals, kicker pulses…) as well as from the beam diagnostics along the extraction lines. For this purpose, profile monitors in front of the dump blocks must be permanently available during machine operation. With more than 1014 protons stored in LHC, the energy deposited in the screen becomes an issue and thermalresistant materials have to be considered. In this paper, the design of this quite unusual device is presented. The different technical options considered for the choice of the screen material are discussed first. The complete layout of the installation is then described with a special emphasis on the mechanical design, the screen assembly and the choice of the radiation-hard camera used to observe the screen.CERN-AB-2007-023oai:cds.cern.ch:10452392007
spellingShingle Accelerators and Storage Rings
Lefèvre, T
Bal, C
Bravin, E
Burger, S
Goddard, B
Hutchins, S
Renaglia, T
A Large Scintillating Screen for the LHC Dump Line
title A Large Scintillating Screen for the LHC Dump Line
title_full A Large Scintillating Screen for the LHC Dump Line
title_fullStr A Large Scintillating Screen for the LHC Dump Line
title_full_unstemmed A Large Scintillating Screen for the LHC Dump Line
title_short A Large Scintillating Screen for the LHC Dump Line
title_sort large scintillating screen for the lhc dump line
topic Accelerators and Storage Rings
url http://cds.cern.ch/record/1045239
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