Keyword: GPU
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WEPOA30 High-Performance Modeling of Plasma-Based Acceleration and Laser-Plasma Interactions. ion, plasma, simulation, laser 758
  • J.-L. Vay, G. Blaclard, R. Lehé, M. Lobet, H. Vincenti
    LBNL, Berkeley, California, USA
  • B.B. Godfrey
    UMD, College Park, Maryland, USA
  • M. Kirchen
    University of Hamburg, Hamburg, Germany
  • P. Lee
    CNRS LPGP Univ Paris Sud, Orsay, France
  Funding: Work supported by US-DOE Contracts DE-AC02-05CH11231 and by the European Commission through the Marie Slowdoska-Curie actions. Used resources of NERSC, supported by US-DOE Contract DE-AC02-05CH11231.
Large-scale numerical simulations are essential to the design of plasma-based accelerators and laser-plasma interations for ultra-high intensity (UHI) physics. The electromagnetic Particle-In-Cell (PIC) approach is the method of choice for self-consistent simulations, as it is based on first principles, and captures all kinetic effects, and also scales easily (for uniform plasmas) to many cores on supercomputers. The standard PIC algorithm relies on second-order finite-difference discretizations of the Maxwell and Newton-Lorentz equations. We present here novel PIC formulations, based on the use of very high-order pseudo-spectral Maxwell solvers, which enable near-total elimination of the numerical Cherenkov instability and increased accuracy over the standard PIC method. We also discuss the latest implementations in the PIC modules Warp-PICSAR and FBPIC on the Intel Xeon Phi and GPU architectures. Examples of applications are summarized on the simulation of laser-plasma accelerators and high-harmonic generation with plasma mirrors.
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