Collimation with Hollow Electron Beams
Open Access
- 17 August 2011
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 107 (8), 084802
- https://doi.org/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.Keywords
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Funding Information
- U.S. Department of Energy
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