Collimation with hollow electron beams

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 c...

Full description

Saved in:
Bibliographic Details
Published inarXiv.org
Main Authors Stancari, G, Valishev, A, Annala, G, Kuznetsov, G, Shiltsev, V, Still, D A, Vorobiev, L G
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 11.07.2011
Subjects
Antiparticles
Antiprotons
Apertures
Collimation
Electron beams
Electrons
Energy storage
Physics - Accelerator Physics
Online AccessGet full text

Cover

More Information
Summary: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.
Bibliography:FERMILAB-PUB-11-192-AD-APC
ISSN:2331-8422
DOI:10.48550/arxiv.1105.3256