High charge ion beams with achromatic divergence by the BELLA petawatt laser

ORAL

Abstract

We report on an experimental study of ion acceleration from micrometer thick metallic targets using the BELLA petawatt laser. Here, we show that for the first time, high quality ion beams can be generated under 0.5 Hz high repetition rate with a petawatt laser system, delivering unprecedented single shot doses up few 1000s Gy. By using a large focal spot size (r0=53 um), proton beams with a significant reduced divergence (<250 mrad) are observed. In addition, the proton beams present a remarkable thickness-dependent achromatic feature in high energy range, for example, in case of 2 um Ti target, the proton beams present constant divergence angle of ~100 mrad beyond 3.2 MeV. Such ion beams are of particularly interest for applications that require high ion charge density.

*The work was supported by LDRD funding from LBNL provided by the Director, and the U.S. DOE Office of Science Offices of HEP and FES, under Contract No. DE-AC02-05CH11231. This work used computational resources (Edison, Hopper) of NERSC, and an award of computation time by the INCITE program using resources of ALCF both supported by the Office of Science of the U.S. DOE under Contract No. DE-AC02-05CH11231 and AC02-06CH11357. J.H.Bin acknowledges financial support from the Alexander von Humboldt Foundation.

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Presenters

  • Jianhui Bin

    • Lawrence Berkeley National Laboratory, USA
    • Lawrence Berkeley Natl Lab

Authors

  • Jianhui Bin

    • Lawrence Berkeley National Laboratory, USA
    • Lawrence Berkeley Natl Lab

  • Sven Steinke

    • Lawrence Berkeley Natl Lab

  • Jaehong Park

    • Princeton University, Princeton, NJ, USA, Lawrence Berkeley Natl Lab, Berkeley, CA, USA
    • Lawrence Berkeley Natl Lab

  • Qing Ji

    • Lawrence Berkeley Natl Lab

  • Kei Nakamura

    • Lawrence Berkeley Natl Lab
    • LBNL

  • Anthony J Gonsalves

    • Lawrence Berkeley Natl Lab
    • Lawrence Berkeley National Laboratory, USA
    • LBNL

  • Stepan Bulanov

    • Univ of California - Berkeley
    • Lawrence Berkeley Natl Lab
    • Lawrence Berkeley National Laboratory

  • Csaba Toth

    • Lawrence Berkeley Natl Lab
    • LBNL, LBNL

  • Jean-Luc Vay

    • Lawrence Berkeley Natl Lab

  • Carl B Schroeder

    • Lawrence Berkeley Natl Lab
    • LBNL

  • Cameron Guy Robinson Geddes

    • Lawrence Berkeley National Lab
    • Lawrence Berkeley Natl Lab
    • LBNL

  • Eric Esarey

    • Lawrence Berkeley Natl Lab
    • LBNL

  • Thomas Schenkel

    • Lawrence Berkeley Natl Lab

  • Wim Pieter Leemans

    • Lawrence Berkeley Natl Lab
    • Lawrence Berkeley National Laboratory, USA
    • Lawrence Berkeley Natl Lab, U.C. Berkeley
    • Lawrence Berkeley Natl Lab, Univ of California - Berkeley
    • LBNL, UC Berkeley