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Spentzouris, P.

Paper Title Page
TUPD015 Accurate Simulation of the Electron Cloud in the Fermilab Main Injector with VORPAL 1955
 
  • P. Lebrun, P. Spentzouris
    Fermilab, Batavia
  • J.R. Cary
    CIPS, Boulder, Colorado
  • P. Stolz, S.A. Veitzer
    Tech-X, Boulder, Colorado
 
 

Precision simulations of the electron cloud at the Fermilab Main Injector have been studied using the plasma simulation code VORPAL. Fully 3D and self consistent solutions that includes Yee-type E.M. field maps generated by the cloud and the proton bunches have been obtained, as well detailed distributions of the 6D phase space occupied by the electrons. We plan to include such maps in the ongoing simulation of the space charge effects in the Main Injector. Simulations of the response of retarded field analyzers and microwave transmission experiments are ongoing.

 
TUPD020 Studies of Space Charge Effects in the Proposed CERN PS2 1964
 
  • J. Qiang, R.D. Ryne
    LBNL, Berkeley, California
  • R. De Maria
    BNL, Upton, Long Island, New York
  • A. Macridin, P. Spentzouris
    Fermilab, Batavia
  • Y. Papaphilippou
    CERN, Geneva
  • U. Wienands
    SLAC, Menlo Park, California
 
 

A new proton synchrotron, the PS2, is under design study to replace the the current proton synchrotron at CERN for the LHC upgrade. Nonlinear space charge effects could cause significant beam emittance growth and particle losses and limit the performance of the PS2. In this paper, we report on studies of the potential space-charge effects at the PS2 using three-dimensional self-consistent macroparticle tracking codes, IMPACT, MaryLie/IMPACT, and Synergia. We will present initial benchmark results among these codes. Effects of space-charge on the emittance growth, especially due to synchrotron coupling, and the aperture sizes will also be discussed.