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Title: Low Emittance, High Brilliance Relativistic Electron Beams from a Laser-Plasma Accelerator

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 5x10{sup 15} A m{sup -1} rad{sup -1} makes it suitable for compact XUV FELs.
Authors:
; ; ; ; ; ; ; ; ; ; ; ;  [1]
  1. Physics Department, University of Strathclyde, Glasgow G4 0NG (United Kingdom)
Publication Date:
OSTI Identifier:
21541734
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 105; Journal Issue: 21; Other Information: DOI: 10.1103/PhysRevLett.105.215007; (c) 2010 American Institute of Physics
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; BRIGHTNESS; ELECTRON BEAMS; EXTREME ULTRAVIOLET RADIATION; FREE ELECTRON LASERS; MEV RANGE; PLASMA GUNS; RELATIVISTIC RANGE; RESOLUTION; WAKEFIELD ACCELERATORS; X RADIATION ACCELERATORS; BEAMS; ELECTROMAGNETIC RADIATION; ENERGY RANGE; IONIZING RADIATIONS; LASERS; LEPTON BEAMS; LINEAR ACCELERATORS; OPTICAL PROPERTIES; PARTICLE BEAMS; PHYSICAL PROPERTIES; RADIATIONS; ULTRAVIOLET RADIATION