Picture of virus under microscope

Research under the microscope...

The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs.

Strathprints serves world leading Open Access research by the University of Strathclyde, including research by the Strathclyde Institute of Pharmacy and Biomedical Sciences (SIPBS), where research centres such as the Industrial Biotechnology Innovation Centre (IBioIC), the Cancer Research UK Formulation Unit, SeaBioTech and the Centre for Biophotonics are based.

Explore SIPBS research

Electron beam pointing stability of a laser wakefield accelerator

Issac, R. C. and Vieux, G. and Welsh, G. H. and Shanks, R. and Brunetti, E. and Cipiccia, S. and Anania, M. P. and Yang, X. and Wiggins, S. M. and Islam, M. R. and Ersfeld, B. and Farmer, J. and Raj, G. and Chen, S. and Clark, D. and McCanny, T. and Jaroszynski, D. A. (2009) Electron beam pointing stability of a laser wakefield accelerator. In: Conference on Harnessing Relativistic Plasma Waves as Novel Radiation Sources From Terahertz to X-Rays and Beyond, 2009-04-21 - 2009-04-23.

Full text not available in this repository. (Request a copy from the Strathclyde author)

Abstract

Electron acceleration using plasma waves driven by ultra-short relativistic intensity laser pulses has undoubtedly excellent potential for driving a compact light source. However, for a wakefield accelerator to become a useful and reliable compact accelerator the beam properties need to meet a minimum standard. To demonstrate the feasibility of a wakefield based radiation source we have reliably produced electron beams with energies of 82 +/- 5 MeV, with 1 +/- 0.2% energy spread and 3 mrad r.m.s. divergence using a 0.9 J, 35 fs 800 nm laser. Reproducible beam pointing is essential for transporting the beam along the electron beam line. We find experimentally that electrons are accelerated close to the laser axis at low plasma densities. However, at plasma densities in excess of 10(19) cm(-3), electron beams have an elliptical beam profile with the major axis of the ellipse rotated with respect to the direction of polarization of the laser.