Wide-angle electron beams from laser-wakefield accelerators

E. Brunetti; X. Yang; F. Y. Li; D. Reboredo Gil; G. H. Welsh; S. Cipiccia; B. Ersfeld; D. W. Grant; P. A. Grant; M. R. Islam; M. Shahzad; M. P. Tooley; G. Vieux; S. M. Wiggins; Z. M. Sheng; D. A. Jaroszynski

doi:10.1117/12.2269314

7 May 2017 Wide-angle electron beams from laser-wakefield accelerators

E. Brunetti, X. Yang, F. Y. Li, D. Reboredo Gil, G. H. Welsh, S. Cipiccia, B. Ersfeld, D. W. Grant, P. A. Grant, M. R. Islam, M. Shahzad, M. P. Tooley, G. Vieux, S. M. Wiggins, Z. M. Sheng, D. A. Jaroszynski

Author Affiliations +

Proceedings Volume 10240, Laser Acceleration of Electrons, Protons, and Ions IV; 102400P (2017) https://doi.org/10.1117/12.2269314
Event: SPIE Optics + Optoelectronics, 2017, Prague, Czech Republic

Abstract

Advances in laser technology have driven the development of laser-wakefield accelerators, compact devices that are capable of accelerating electrons to GeV energies over centimetre distances by exploiting the strong electric field gradients arising from the interaction of intense laser pulses with an underdense plasma. A side-effect of this acceleration mechanism is the production of high-charge, low-energy electron beams at wide angles. Here we present an experimental and numerical study of the properties of these wide-angle electron beams, and show that they carry off a significant fraction of the energy transferred from the laser to the plasma. These high-charge, wide-angle beams can also cause damage to laser-wakefield accelerators based on capillaries, as well as become source of unwanted bremsstrahlung radiation.

Conference Presentation

Citation Download Citation

E. Brunetti, X. Yang, F. Y. Li, D. Reboredo Gil, G. H. Welsh, S. Cipiccia, B. Ersfeld, D. W. Grant, P. A. Grant, M. R. Islam, M. Shahzad, M. P. Tooley, G. Vieux, S. M. Wiggins, Z. M. Sheng, and D. A. Jaroszynski "Wide-angle electron beams from laser-wakefield accelerators", Proc. SPIE 10240, Laser Acceleration of Electrons, Protons, and Ions IV, 102400P (7 May 2017); https://doi.org/10.1117/12.2269314

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