2006•CERN Document Server (European Organization for Nuclear Research)Open access
THE FINAL COLLIMATION SYSTEM FOR THE LHC
Ralph W. Assmann, Matteo Magistris, O Aberle, M. Mayer, F. Ruggiero, Jose M. Jiménez, S. Calatroni, A. Ferrari, G. Bellodi, I. Kurochkin, Chiara Bracco, A. Tsoulou, Ch. Rathjen, A. Masi, Vlachoudis, Alessandro Dallocchio, R. Perret, R. Losito, R.Chamizo, M. Santana, T. Weiler, A. Bertarelli, A Grudiev, Stefano Redaelli, Yacine Kadi, M. Brugger, B Dehning, I. S. Baishev, M Jonker, H.H. Braun, G. Robert-Demolaize, S. Roesler, J.B. Jeanneret, Jacques Lettry, Keith Kershaw, M. Sobczak, P. Gander, P. Sievers, J. Lendaro, E. B. Holzer, Elias Métral
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Abstract
The LHC collimation system has been re-designed over in order to address the unprecedented challenges that are faced with the 360 MJ beams at 7 TeV. The layout of the LHC has now been frozen and a final approach for collimation and cleaning has been adopted. In total 132 pure collimator locations have been reserved in the two LHC rings and can be installed in a phased approach. Up to 88 collimators of five different types will be available for initial beam operation. The system has been fully optimized for avoiding beam-induced quenches of superconducting magnets and for sufficient survival of beamline components against radioactive dose. The phased approach for LHC collimation is described, the various collimators and their functionalities are explained, and the expected system performance is summarized.
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