• Open Access

Control of tunable, monoenergetic laser-plasma-accelerated electron beams using a shock-induced density downramp injector

K. K. Swanson, H.-E. Tsai, S. K. Barber, R. Lehe, H.-S. Mao, S. Steinke, J. van Tilborg, K. Nakamura, C. G. R. Geddes, C. B. Schroeder, E. Esarey, and W. P. Leemans
Phys. Rev. Accel. Beams 20, 051301 – Published 30 May 2017

Abstract

Control of the properties of laser-plasma-accelerated electron beams that were injected along a shock-induced density downramp through precision tailoring of the density profile was demonstrated using a 1.8 J, 45 fs laser interacting with a mm-scale gas jet. The effects on the beam spatial profile, steering, and absolute energy spread of the density region before the shock and tilt of the shock were investigated experimentally and with particle-in-cell simulations. By adjusting these density parameters, the electron beam quality was controlled and improved while the energy (30–180 MeV) and energy spread (2–11 MeV) were independently tuned. Simple models that are in good agreement with the experimental results are proposed to explain these relationships, advancing the understanding of downramp injection. This technique allows for high-quality electron beams with percent-level energy spread to be tailored based on the application.

  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Received 1 November 2016

DOI:https://doi.org/10.1103/PhysRevAccelBeams.20.051301

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.

Published by the American Physical Society

Physics Subject Headings (PhySH)

Accelerators & Beams

Authors & Affiliations

K. K. Swanson1,2, H.-E. Tsai1, S. K. Barber1, R. Lehe1, H.-S. Mao1, S. Steinke1, J. van Tilborg1, K. Nakamura1, C. G. R. Geddes1, C. B. Schroeder1, E. Esarey1, and W. P. Leemans1,2

  • 1Lawrence Berkeley National Laboratory, 1 Cyclotron Rd, Berkeley California 94720, USA
  • 2University of California - Berkeley, Berkeley California 94720, USA

Article Text

Click to Expand

References

Click to Expand
Issue

Vol. 20, Iss. 5 — May 2017

Reuse & Permissions
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Accelerators and Beams

Reuse & Permissions

It is not necessary to obtain permission to reuse this article or its components as it is available under the terms of the Creative Commons Attribution 4.0 International license. This license permits unrestricted use, distribution, and reproduction in any medium, provided attribution to the author(s) and the published article's title, journal citation, and DOI are maintained. Please note that some figures may have been included with permission from other third parties. It is your responsibility to obtain the proper permission from the rights holder directly for these figures.

×

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×