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Open Access Publications from the University of California

Scholarly Works (4 results)

  • Article
LBL Publications (2009)
It can be computationally advantageous to perform computer simulations in a Lorentz boosted frame for a certain class of particle acceleration devices or problems such as: free electron laser, laser-plasma accelerator, particle beams interacting with electron clouds [1]. Complications arising from calculating in a Lorentz boosted frame and respective solutions have now been further analyzed, supporting more successful applications of the method to these problems. Most notably, full PIC 3D simulations of 10 GeV laser acceleration stages were enabled, with demonstrated convergence at a few percent level at various gammas, with speed-ups of 1,000 or more. Such simulations are important to the design of next generation accelerators. We will present and discuss the latest developments of the method illustrated with various examples of its application.
    Cover page: Modeling 10 GeV laser-plasma accelerators and conventional accelerators using boosted computational frames
    • Article
    LBL Publications (2010)
      Cover page: Novel methods for simulating relativistic systems using an optimal boosted frame
      • Article
      Lawrence Berkeley National Laboratory (2008)

      Laser wakefield accelerators produce accelerating gradients up to hundreds of GeV/m, and recently demonstrated 1-10 MeV energy spread at energies up to 1 GeV using electrons self-trapped from the plasma. Controlled injection and staging may further improve beam quality by circumventing tradeoffs between energy, stability, and energy spread/emittance. We present experiments demonstrating production of a stable electron beam near 1 MeV with hundred-keV level energy spread and central energy stability by using the plasma density profile to control selfinjection, and supporting simulations. Simulations indicate that such beams can be post accelerated to high energies,potentially reducing momentum spread in laser acceleratorsby 100-fold or more.

        Cover page: Stable Electron Beams With Low Absolute Energy Spread From a Laser Wakefield Accelerator With Plasma Density Ramp Controlled Injection
        • Article
        • Peer Reviewed
        UC Berkeley Previously Published Works (2013)
        This is the working summary of the Accelerator Science working group of the Computing Frontier of the Snowmass meeting 2013. It summarizes the computing requirements to support accelerator technology in both Energy and Intensity Frontiers.
          Cover page: Snowmass 2013 Computing Frontier: Accelerator Science
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