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Open Access research with a European policy impact...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by Strathclyde researchers, including by researchers from the European Policies Research Centre (EPRC).

EPRC is a leading institute in Europe for comparative research on public policy, with a particular focus on regional development policies. Spanning 30 European countries, EPRC research programmes have a strong emphasis on applied research and knowledge exchange, including the provision of policy advice to EU institutions and national and sub-national government authorities throughout Europe.

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Low emittance, high brilliance relativistic electron beams from a laser-plasma accelerator

Brunetti, E. and Shanks, Richard and Manahan, G. G. and Islam, M. R. and Ersfeld, B. and Anania, M. P. and Cipiccia, S. and Issac, R. C. and Raj, G. and Vieux, G. and Welsh, G. H. and Wiggins, S. M. and Jaroszynski, D. A. (2010) Low emittance, high brilliance relativistic electron beams from a laser-plasma accelerator. Physical Review Letters, 105 (21). ISSN 0031-9007

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Abstract

Progress in laser wakefield accelerators indicates their suitability as a driver of compact free-electron lasers (FELs). High brightness is defined by the normalized transverse emittance, which should be less than 1 pi mm mrad for an x-ray FEL. We report high-resolution measurements of the emittance of 125 MeV, monoenergetic beams from a wakefield accelerator. An emittance as low as 1.1 +/- 0.1 pi mm mrad is measured using a pepper-pot mask. This sets an upper limit on the emittance, which is comparable with conventional linear accelerators. A peak transverse brightness of 5 x 10(15) Am-1 rad(-1) makes it suitable for compact XUV FELs.