8-13 August 2011
Rhode Island Convention Center
US/Eastern timezone

New Methods of Particle Collimation in Colliders

Aug 9, 2011, 5:00 PM
557 (Rhode Island Convention Center)


Rhode Island Convention Center

Parallel contribution Accelerator Physics Accelerator Physics


Giulio Stancari (Fermi National Accelerator Laboratory)


The hollow electron beam collimator is a novel concept of controlled halo removal for intense high-energy beams in storage rings and colliders. 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. Results on the collimation of 980-GeV antiprotons are presented.

Primary author

Giulio Stancari (Fermi National Accelerator Laboratory)

Presentation materials