The beam-based intra-train feedback system of CLIC

Journal article

The design luminosity of the future linear colliders requires transverse beam size at the nanometre level at the interaction point (IP), as well as stabilisation of the beams at the sub-nanometre level. Different imperfections, for example ground motion, can generate relative vertical offsets of the two colliding beams at the IP which significantly degrade the luminosity. In principle, a beam-based intra-train feedback system in the interaction region can correct the relative beam-beam offset and steer the beams back into collision. In addition, this feedback system might considerably help to relax the required tight stability tolerances of the final doublet magnets. For CLIC, with bunch separations of 0.5 ns and train length of 156 ns intra-train feedback corrections are specially challenging. In this paper we describe the conceptual design and simulation of an intratrain feedback system for CLIC. Results of luminosity performance simulation are presented and discussed.

Authors: Resta-López, J; Burrows, P

• Journal: IPAC 2010 - 1st International Particle Accelerator Conference
• Pages: 2791-2793
• Publication date: 2010-01-01
• Language: English