2012•Unpublished venueRequires access
THE HIGH INTENSITY/HIGH BRIGHTNESS UPGRADE PROGRAM AT CERN: STATUS AND CHALLENGES
G. Arduini, Theodoros Argyropoulos, Sandra Aumon, Hannes Bartosik, E. Benedetto, Nicolò Biancacci, Thomas Bohl, J. Borburgh, C. Carli, F. Caspers, Heiko Damerau, Vincenzo Forte, R. Garoby, M. Giovannozzi, B. Goddard, S. Hancock, Klaus Peter Hanke, Alexander Huschauer, Giovanni Iadarola, M. Meddahi, B. Mikulec, Y. Papaphilippou, Serena Persichelli, G. Rumolo, Benoît Salvant, F. Schmidt, Elena Shaposhnikova, R. Steerenberg, G. Sterbini, M. Taborelli, H. Timko, M. Vretenar, Raymond Wasef, Christina Yin Vallgren, Carlo Zannini, G. Franchetti, M. Migliorati
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Abstract
The future beam brightness and intensities required by the HL-LHC (High-Luminosity LHC) project and for possible new neutrino production beams triggered a deep revision of the LHC injector performances. The analysis, progressing in the framework of the LHC Injectors Upgrade (LIU) project, outlined major limitations mainly related to collective effects - space charge in PSB and PS, electron cloud driven and TMCI instabilities in the SPS, longitudinal coupled bunch instabilities in the PS for example - but also to the existing hardware capability to cope with beam instabilities and losses. A summary of the observations and simulation studies carried out so far, as well as the future ones, will be presented. The solution proposed to overcome the different limitations and the plans for their implementation will be also briefly reviewed.