A   B   C   D   E   F   G   H   I   J   K   L   M   N   O   P   Q   R   S   T   U   V   W   X   Y   Z  

Aiba, M.

Paper Title Page
TUPAN093 Simulation of the CERN PS Booster Performance with 160 MeV H- Injection from Linac4 1595
  • F. Gerigk, M. Aiba, C. Carli, M. Martini
    CERN, Geneva
  • S. M. Cousineau
    ORNL, Oak Ridge, Tennessee
  The ultimate luminosity (2.3 x 1034 cm-2 s-1) in the LHC can only be reached or even exceeded if a major upgrade of the CERN proton injector complex takes place. The first identified bottleneck towards higher brightness beams is the 50 MeV proton injection of Linac2 into the PS booster (PSB). Doubling the intensity in the PSB can be achieved with a new linac (Linac4) which increases the injection energy to 160 MeV. Linac4 will provide H- ions and charge-exchange injection will be used in the PSB instead of using the present multi-turn proton injection scheme. The code ACCSIM is used to study the H- injection process and to determine if the requested intensities can be reached within the specified emittance budgets. The results are then compared with ORBIT simulations. In the longitudinal plane we use ESME to study various capture schemes.  
THPAN074 Space-Charge Compensation Options for the LHC Injector Complex 3390
  • F. Zimmermann, M. Aiba, M. Chanel, U. Dorda, R. Garoby, J.-P. Koutchouk, M. Martini, E. Metral, Y. Papaphilippou, W. Scandale
    CERN, Geneva
  • G. Franchetti
    GSI, Darmstadt
  • V. D. Shiltsev
    Fermilab, Batavia, Illinois
  Space-charge effects have been identified as the most serious intensity limitation in the CERN PS and PS booster, on the way towards ultimate LHC performance and beyond. We here explore the application of several previously proposed space-compensation methods to the two LHC pre-injector rings, for each scheme discussing its potential benefit, ease of implementation, beam-dynamics risk, and the R&D programme required. The methods considered include tune shift and resonance compensation via octupoles, nonlinear chromaticity, or electron lenses, and beam neutralization by an electron cloud, plasma or negative ions.