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Aiba, M.

Paper Title Page
TU6RFP025 Operational Considerations for the PSB H- Injection System 1587
 
  • W.J.M. Weterings, M. Aiba, J. Borburgh, C. Carli, T. Fowler, B. Goddard
    CERN, Geneva
  
 

For the LINAC4 project the PS Booster (PSB) injection system will be upgraded. The 160 MeV H- beam will be distributed to the 4 superimposed PSB synchrotron rings and horizontally injected by means of an H- charge-exchange system. Operational considerations for the injection system are presented, including expected beam losses from field stripping of H- and excited H0 and foil scattering, possible injection failure cases and expected stripping foil lifetimes. Loading assumptions for the internal beam dumps are discussed together with estimates of doses on various components.

  
WE6PFP021 First Beta-Beating Measurement in the LHC 2531
 
  • R. Tomás, M. Aiba, S.D. Fartoukh, F. Franchi, M. Giovannozzi, V. Kain, M. Lamont, G. Vanbavinckhove, J. Wenninger, F. Zimmermann
    CERN, Geneva
  • R. Calaga
    BNL, Upton, Long Island, New York
  • A. Morita
    KEK, Ibaraki
  
 

In 2008 beam successfully circulated in the LHC. Thanks to an excellent functioning of the BPM system and the related software, injection oscillations were recorded for the first 90 turns at all BPMs. The analysis of these data gives the unique opportunity of evaluating the periodic optics and inferring possible error sources.

  
WE6PFP022 Beta-Beating Corrections in the SPS as a Testbed for the LHC 2534
 
  • R. Tomás, M. Aiba, G. Vanbavinckhove, J. Wenninger
    CERN, Geneva
  • R. Calaga
    BNL, Upton, Long Island, New York
  • A. Morita
    KEK, Ibaraki
  
 

For several years optics measurement and correction algorithms have been developed for the LHC. During 2008 these algorithms have been directly tested in the SPS and RHIC. The experimental results proving the readiness of the applications are presented.

  
TH6PFP036 Lattice Issues of the CERN PSB with H- Charge Exchange Injection Hardware 3781
 
  • C. Carli, M. Aiba, M. Chanel, B. Goddard, M. Martini, W.J.M. Weterings
    CERN, Geneva
  
 

The motivation for the construction of CERN Linac4 is to improve the performance of the PSB by raising the injection energy and implementing a new H- charge exchange multiturn injection scheme. Strategies to design the H- charge exchange injection hardware and, in particular, to mitigate perturbations of the lattice will be reported and the proposed geometry described.

  
TH6PFP075 Linear and Non-Linear Optics Measurements at SOLEIL 3877
 
  • R. Tomás, M. Aiba, G. Vanbavinckhove
    CERN, Geneva
  • A. Nadji, L.S. Nadolski, M.-A. Tordeux
    SOLEIL, Gif-sur-Yvette
  
 

The successful correction of non-linear resonances in DIAMOND using the BPM turn-by-turn data has motivated testing this approach in SOLEIL in collaboration with CERN. We report on the first experiences towards the correction of non-linear resonances in SOLEIL.