Beam-beam modulational diffusion in 2 1/2 dimensions

Author

Satogata, T. ; Peggs, S.

Author_Institution

Brookhaven Nat. Lab., Upton, NY, USA

fYear

1993

fDate

17-20 May 1993

Firstpage

261

Abstract

Qualitative theoretical predictions for single particle modulational diffusion in 2 1/2 dimensions are compared with simulation results. Typical Fermilab Tevatron parameters are used for two beam-beam interactions under the influence of tune modulation created by synchrotron oscillations. When sideband overlap occurs on a pure one-dimensional resonance, diffusive growth is predicted and observed in the other transverse dimension. However exponential amplitude growth is observed in simulation instead of classically predicted root-time diffusive growth. Exponential growth rates are measured in particle tracking and possible impact on Tevatron luminosity upgrades is mentioned

Keywords

beam handling techniques; particle beam diagnostics; proton accelerators; synchrotrons; tuning; Fermilab Tevatron parameters; Tevatron luminosity upgrades; beam-beam interactions; beam-beam modulational diffusion; diffusive growth; exponential amplitude growth; one-dimensional resonance; particle tracking; root-time diffusive growth; sideband overlap; simulation results; single particle modulational diffusion; synchrotron oscillations; transverse dimension; tune modulation; Frequency; Laboratories; Noise level; Optical modulation; Particle accelerators; Particle measurements; Particle tracking; Predictive models; Stochastic resonance; Synchrotrons;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 1993., Proceedings of the 1993

Conference_Location

Washington, DC

Print_ISBN

0-7803-1203-1

Type

conf

DOI

10.1109/PAC.1993.308946

Filename

308946