Collimation with hollow electron beams
arXiv:1105.3256 · doi:10.1103/PhysRevLett.107.084802
Abstract
A novel concept of controlled halo removal for intense high-energy beams in storage rings and colliders is presented. It is based on the interaction of the circulating beam with a 5-keV, magnetically confined, pulsed hollow electron beam in a 2-m-long section of the ring. The electrons enclose the circulating beam, kicking halo particles transversely and leaving the beam core unperturbed. By acting as a tunable diffusion enhancer and not as a hard aperture limitation, the hollow electron beam collimator extends conventional collimation systems beyond the intensity limits imposed by tolerable losses. The concept was tested experimentally at the Fermilab Tevatron proton-antiproton collider. The first results on the collimation of 980-GeV antiprotons are presented.
4 pages, 5 figures
References in corpus (5)
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- The Origination and Diagnostics of Uncaptured Beam in the Tevatron and Its Control by Electron Lenses
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- The Legacy of the Tevatron in the Area of Accelerator Science
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- High energy Coulomb-scattered electrons for relativistic particle beam diagnostics
- Generation of topologically complex three-dimensional electron beams in a plasma photocathode
- Pulsed Electron Lenses for Space Charge Mitigation
- Beam halo dynamics and control with hollow electron beams
- Fast Failures in the LHC and the future High Luminosity LHC*