Measuring Beta Functions and Dispersion in the Early LHC

Achieving nominal beam conditions in the LHC requires a small beta beating and a small dispersion mismatch. We compare the linear optics errors expected from linear and nonlinear magnetic field imperfections and magnet mis-alignments with the required values. The measurement procedures are simulated...

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Detalles Bibliográficos
Autores principales: Assmann, R W, Fartoukh, Stéphane David, Zimmermann, Frank
Lenguaje:eng
Publicado: 2002
Materias:
Accelerators and Storage Rings
Acceso en línea:http://cds.cern.ch/record/569463
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author Assmann, R W
Fartoukh, Stéphane David
Zimmermann, Frank
author_facet Assmann, R W
Fartoukh, Stéphane David
Zimmermann, Frank
author_sort Assmann, R W
collection CERN
description Achieving nominal beam conditions in the LHC requires a small beta beating and a small dispersion mismatch. We compare the linear optics errors expected from linear and nonlinear magnetic field imperfections and magnet mis-alignments with the required values. The measurement procedures are simulated in a machine with collimators, realistic aperture restrictions, and different bunch intensities, in order to infer the expected measurement accuracies for beta beating and dispersion. Consequences for possibly required beam-based correction tools are discussed.
id cern-569463
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2002
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spelling cern-5694632023-05-31T13:20:27Zhttp://cds.cern.ch/record/569463engAssmann, R WFartoukh, Stéphane DavidZimmermann, FrankMeasuring Beta Functions and Dispersion in the Early LHCAccelerators and Storage RingsAchieving nominal beam conditions in the LHC requires a small beta beating and a small dispersion mismatch. We compare the linear optics errors expected from linear and nonlinear magnetic field imperfections and magnet mis-alignments with the required values. The measurement procedures are simulated in a machine with collimators, realistic aperture restrictions, and different bunch intensities, in order to infer the expected measurement accuracies for beta beating and dispersion. Consequences for possibly required beam-based correction tools are discussed.LHC-Project-Report-586CERN-LHC-Project-Report-586oai:cds.cern.ch:5694632002-07-08
spellingShingle Accelerators and Storage Rings
Assmann, R W
Fartoukh, Stéphane David
Zimmermann, Frank
Measuring Beta Functions and Dispersion in the Early LHC
title Measuring Beta Functions and Dispersion in the Early LHC
title_full Measuring Beta Functions and Dispersion in the Early LHC
title_fullStr Measuring Beta Functions and Dispersion in the Early LHC
title_full_unstemmed Measuring Beta Functions and Dispersion in the Early LHC
title_short Measuring Beta Functions and Dispersion in the Early LHC
title_sort measuring beta functions and dispersion in the early lhc
topic Accelerators and Storage Rings
url http://cds.cern.ch/record/569463
work_keys_str_mv AT assmannrw measuringbetafunctionsanddispersionintheearlylhc
AT fartoukhstephanedavid measuringbetafunctionsanddispersionintheearlylhc
AT zimmermannfrank measuringbetafunctionsanddispersionintheearlylhc

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