Author: Luiten, O.J.
Paper Title Page
MOABC2
 Molecular Dynamics Simulations for Laser-Cooled Sources  
 
  • S.B. van der Geer, O.J. Luiten, E.J.D. Vredenbregt
    TUE, Eindhoven, The Netherlands
  • M.J. de Loos, S.B. van der Geer
    Pulsar Physics, Eindhoven, The Netherlands
  
  Electron and ion sources based on laser-cooling and trapping techniques are a relatively new reality in the field of charge particle accelerators. The dynamics of these sources is governed by stochastic effects, and not by the usually dominant space-charge forces. This is the direct consequence of higher phase-space density. The transition from a space-charge regime to a stochastic regime requires a radical shift in simulation techniques: We need to replace the Particle-In-Cell workhorse with molecular dynamics simulations, i.e. track each and every particle including all pair-wise interactions. The two main candidates for such molecular dynamics simulations are the Fast Multipole Method (FMM) and the Barnes&Hut scheme (B&H). Tradeoffs are given, and simulation results for the B&H method implemented in the General Particle Tracer (GPT) code are presented for realistic test-cases.  
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