IPAC2010 TUPEB076 IPAC2010 Logo
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Title Development of hollow electron beams for proton and ion collimation Submitted 05-DEC-09 03:07 (UTC)
Classification 01 Circular Colliders Modified 18-MAY-10 21:24 (UTC)
Presentation Poster
Presenter Vladimir Shiltsev Paper ID TUPEB076
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Author(s) Giulio Stancari (Fermilab, Batavia; INFN-Ferrara, Ferrara), Ralph Assmann (CERN, Geneva), Alexandr I. Drozhdin, Gennady Kuznetsov, Vladimir Shiltsev, Dean Alan Still, Alexander Valishev, Leonid G. Vorobiev (Fermilab, Batavia), Andrey Kabantsev (UCSD, La Jolla, California)
Abstract Magnetically confined hollow electron beams for controlled halo removal in high-energy colliders such as the Tevatron or the LHC may extend traditional collimation systems beyond the intensity limits imposed by tolerable material damage. They may also improve collimation performance by suppressing loss spikes due to beam jitter and by increasing capture efficiency. A hollow electron gun was designed and built. Its performance and stability were measured at the Fermilab test stand. The gun will be installed in one of the existing Tevatron electron lenses for preliminary tests of the hollow-beam collimator concept, addressing critical issues such as alignment and instabilities of the overlapping proton and electron beams.
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Footnote
Funding Agency Work supported by the United States Department of Energy under Contract No. DE-AC02-07CH11359 and through the US LHC Accelerator Research Program (LARP).


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