• DocumentCode
    3145643
  • Title

    IS LEP beam-beam limited at its highest energy?

  • Author

    Brandt, D. ; Herr, W. ; Meddahi, M. ; Verdier, A.

  • Author_Institution
    CERN, Geneva, Switzerland
  • Volume
    5
  • fYear
    1999
  • fDate
    1999
  • Firstpage
    3005
  • Abstract
    The operation of LEP at 45.6 GeV was limited by beam-beam effects and the vertical beam-beam parameter ξy never exceeded 0.045. At the highest energy of 94.5 GeV, the increased damping allows higher beam-beam parameters ξy. 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
  • Keywords
    colliding beam accelerators; electron accelerators; particle beam dynamics; particle beam stability; storage rings; 45.6 GeV; 94.5 GeV; LEP; beam-beam effects; damping; vertical beam-beam parameter; Linear particle accelerator; Optical beams; Optical control; Optical coupling; Particle beams; Resonance; Stimulated emission; Tail; Undulators;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Particle Accelerator Conference, 1999. Proceedings of the 1999
  • Conference_Location
    New York, NY
  • Print_ISBN
    0-7803-5573-3
  • Type

    conf

  • DOI
    10.1109/PAC.1999.792127
  • Filename
    792127