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Is LEP beam-beam limited at its highest energy?

The operation of LEP at 45.6 GeV was limited by beam-beam effects and the vertical beam-beam parameter xy never exceeded 0.045. At the highest energy of 94.5 GeV, the increased damping allows higher beam-beam parameters xy . Values above 0.07 in the vertical plane averaged over four experiments have...

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Detalles Bibliográficos
Autores principales: Brandt, D, Herr, Werner, Meddahi, Malika, Verdier, A
Lenguaje:eng
Publicado: 1999
Materias:
Acceso en línea:http://cds.cern.ch/record/387589
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author Brandt, D
Herr, Werner
Meddahi, Malika
Verdier, A
author_facet Brandt, D
Herr, Werner
Meddahi, Malika
Verdier, A
author_sort Brandt, D
collection CERN
description The operation of LEP at 45.6 GeV was limited by beam-beam effects and the vertical beam-beam parameter xy never exceeded 0.045. At the highest energy of 94.5 GeV, the increased damping allows higher beam-beam parameters xy . Values above 0.07 in the vertical plane averaged over four experiments have been obtained frequently with peak values up to 0.075 in a single experiment. Although the maximum intensity in LEP is presently limited by technical considerations, some observations indicate that the beam-beam limit is close and the question of the maximum possible values can be raised. These observations are shown in this paper and possible consequences are presented. The optimum operation of LEP in the neighbourhood of the beam-beam limit is discussed.
id cern-387589
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1999
record_format invenio
spelling cern-3875892023-05-05T13:07:38Zhttp://cds.cern.ch/record/387589engBrandt, DHerr, WernerMeddahi, MalikaVerdier, AIs LEP beam-beam limited at its highest energy?Accelerators and Storage RingsThe operation of LEP at 45.6 GeV was limited by beam-beam effects and the vertical beam-beam parameter xy never exceeded 0.045. At the highest energy of 94.5 GeV, the increased damping allows higher beam-beam parameters xy . Values above 0.07 in the vertical plane averaged over four experiments have been obtained frequently with peak values up to 0.075 in a single experiment. Although the maximum intensity in LEP is presently limited by technical considerations, some observations indicate that the beam-beam limit is close and the question of the maximum possible values can be raised. These observations are shown in this paper and possible consequences are presented. The optimum operation of LEP in the neighbourhood of the beam-beam limit is discussed.CERN-SL-99-030-APoai:cds.cern.ch:3875891999
spellingShingle Accelerators and Storage Rings
Brandt, D
Herr, Werner
Meddahi, Malika
Verdier, A
Is LEP beam-beam limited at its highest energy?
title Is LEP beam-beam limited at its highest energy?
title_full Is LEP beam-beam limited at its highest energy?
title_fullStr Is LEP beam-beam limited at its highest energy?
title_full_unstemmed Is LEP beam-beam limited at its highest energy?
title_short Is LEP beam-beam limited at its highest energy?
title_sort is lep beam-beam limited at its highest energy?
topic Accelerators and Storage Rings
url http://cds.cern.ch/record/387589
work_keys_str_mv AT brandtd islepbeambeamlimitedatitshighestenergy
AT herrwerner islepbeambeamlimitedatitshighestenergy
AT meddahimalika islepbeambeamlimitedatitshighestenergy
AT verdiera islepbeambeamlimitedatitshighestenergy