Experimental Demonstration of Compensation of Beam-Beam Effects by Electron Lenses

Abstract

We report the first experimental demonstration of compensation of beam-beam interaction effects in high-energy particle collider by using space-charge forces of a low-energy electron beam. In our experiments, an electron lens, a novel instrument developed for the beam-beam compensation, was set on a 980-GeV proton bunch in the Tevatron proton-antiproton collider. The proton bunch losses due to its interaction with antiproton beam were reduced by a factor of 2 when the electron lens was operating. We describe the principle of electron lens operation and present experimental results.

submitted to Physical Review Letters, April 2, 2007. submitted to Physical Review Letters, April 2, 2007

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