The LHC Beam Pipe Waveguide Mode Reflectometer

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The waveguide-mode reflectometer for obstacle detection in the LHC beam pipe has been intensively used for more than 18 months. The â€ﾜAssembly” version is based on the synthetic pulse method using a modern vector network analyzer. It has mode selective excitation couplers for the first TE and TM...

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Autores principales: Kroyer, T, Borowiec, P, Caspers, Friedhelm, Sulek, Z, Williams, L R
Lenguaje:eng
Publicado: 2007
Materias:
Accelerators and Storage Rings
Acceso en línea:http://cds.cern.ch/record/1058819
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author Kroyer, T
Borowiec, P
Caspers, Friedhelm
Sulek, Z
Williams, L R
author_facet Kroyer, T
Borowiec, P
Caspers, Friedhelm
Sulek, Z
Williams, L R
author_sort Kroyer, T
collection CERN
description The waveguide-mode reflectometer for obstacle detection in the LHC beam pipe has been intensively used for more than 18 months. The â€ﾜAssembly” version is based on the synthetic pulse method using a modern vector network analyzer. It has mode selective excitation couplers for the first TE and TM mode and uses a specially developed waveguide mode dispersion compensation algorithm with external software. In addition there is a similar â€ﾜIn Situ” version of the reflectometer which uses permanently installed microwave couplers at the end of each of the nearly 3 km long LHC arcs. During installation a considerable number of unexpected objects have been found in the beam pipes and subsequently removed. Operational statistics and lessons learned are presented and the overall performance is discussed.
id cern-1058819
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2007
record_format invenio
spelling cern-10588192023-05-31T13:21:20Zhttp://cds.cern.ch/record/1058819engKroyer, TBorowiec, PCaspers, FriedhelmSulek, ZWilliams, L RThe LHC Beam Pipe Waveguide Mode ReflectometerAccelerators and Storage RingsThe waveguide-mode reflectometer for obstacle detection in the LHC beam pipe has been intensively used for more than 18 months. The â€ﾜAssembly” version is based on the synthetic pulse method using a modern vector network analyzer. It has mode selective excitation couplers for the first TE and TM mode and uses a specially developed waveguide mode dispersion compensation algorithm with external software. In addition there is a similar â€ﾜIn Situ” version of the reflectometer which uses permanently installed microwave couplers at the end of each of the nearly 3 km long LHC arcs. During installation a considerable number of unexpected objects have been found in the beam pipes and subsequently removed. Operational statistics and lessons learned are presented and the overall performance is discussed.LHC-PROJECT-Report-1033CERN-LHC-PROJECT-Report-1033oai:cds.cern.ch:10588192007
spellingShingle Accelerators and Storage Rings
Kroyer, T
Borowiec, P
Caspers, Friedhelm
Sulek, Z
Williams, L R
The LHC Beam Pipe Waveguide Mode Reflectometer
title The LHC Beam Pipe Waveguide Mode Reflectometer
title_full The LHC Beam Pipe Waveguide Mode Reflectometer
title_fullStr The LHC Beam Pipe Waveguide Mode Reflectometer
title_full_unstemmed The LHC Beam Pipe Waveguide Mode Reflectometer
title_short The LHC Beam Pipe Waveguide Mode Reflectometer
title_sort lhc beam pipe waveguide mode reflectometer
topic Accelerators and Storage Rings
url http://cds.cern.ch/record/1058819
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