Author: Babzien, M.
Paper Title Page
WEPLO05 Developing Criteria for Laser Transverse Instability in LWFA Simulations 855
SUPLE07   use link to see paper's listing under its alternate paper code  
  • Y. Yan, L.D. Amorim, P. Iapozzuto, V. Litvinenko, N. Vafaei-Najafabadi
    Stony Brook University, Stony Brook, USA
  • M. Babzien, M.G. Fedurin, Y.C. Jing, K. Kusche, M.A. Palmer, I. Pogorelsky, M.N. Polyanskiy
    BNL, Upton, New York, USA
  • M. Downer, J.R. Welch, R. Zgadzaj
    The University of Texas at Austin, Austin, Texas, USA
  • C. Joshi, W.B. Mori
    UCLA, Los Angeles, California, USA
  • P. Kumar, V. Samulyak
    SBU, Stony Brook, USA
  Funding: We acknowledge resources of NERSC facility, operated under Contract No. DE-AC02-5CH11231, and of SEAWULF at Stony Brook University as well as funding from SBU-BNL Seed Grants.
Laser-driven plasma wakefield acceleration (LWFA) is considered as a potential technology for future colliders and light sources. To make the best use of a laser’s power, the laser is expected to maintain a stable propagation. A transverse instability is observed in our previous simulations when a long, intense CO2 laser propagates inside a plasma*. This unstable motion is accompanied by strong transverse diffraction of the laser power and results in the disruption of the ion channel typically used for radiation generation**. We investigated the hosing-like instability using the Particle-in-Cell code OSIRIS*** by modeling the laser portion where this instability is seeded and then evolves. In this proceeding, a criteria will be described that allows for the characterization of the temporal and spatial evolution of this instability.
*J. Yan, et al. , AAC, IEEE, 2018.
** L. Nemos et al., PPCF, 58(3), 2016.
***R. A. Fonseca et al., Lecture Notes Computation Science (2331) 342, 2002.
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About • paper received ※ 16 September 2019       paper accepted ※ 04 December 2019       issue date ※ 08 October 2019  
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Multi-TW Picosecond Long-Wave Infrared Laser for Particle Acceleration at ATF  
  • M.N. Polyanskiy, M. Babzien, M.A. Palmer, I. Pogorelsky
    BNL, Upton, New York, USA
  Favorable wavelength scaling makes high peak-power lasers operating in the long-wave infrared (LWIR) spectral range (8 14 µm) attractive for several promising schemes of laser particle acceleration. For instance, because of the scaling of the ponderomotive force and the critical plasma density as λ2 and 1/λ2 respectively, LWIR lasers can drive plasma wakes in laser wakefield accelerators much more efficiently than near-IR lasers while producing much bigger trapping volumes. Amplification of a picosecond pulse in high-pressure CO2 laser amplifiers is presently the only method of generating a terawatt peak power in LWIR. We recently achieved a 5-TW operation in quasi-single 2-ps pulses at 9.2 μm at 0.05 Hz repetition rate and we are currently working on reducing the pulse duration to below a picosecond as required for the realization of LWFA acceleration in the bubble regime.  
slides icon Slides THYBB6 [1.455 MB]  
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