Journal
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
Volume 483, Issue 1-2, Pages 445-448Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0168-9002(02)00359-5
Keywords
3D-SASE FEL; X-ray; bright source; attosecond
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Modern lasers with emission wavelengths similar to1 mum can be used as electromagnetic wigglers and have sufficient output power to obtain wiggler parameters K (normalized vector potential) close to unity. With this kind of wiggler, in order to make a 10-keV X-ray SASE FEL, electron beam energies of similar to25 MeV are sufficient. In this presentation, scaling laws for the operation of FELs will be discussed. Using these scaling laws, requirements for electron sources will be obtained. The required electron beams must be about six orders of magnitude brighter than those available with existing sources. We propose a novel source based on vacuum laser pondermotive acceleration that will produce an electron beam meeting these requirements. This opens up a realistic possibility of realizing the dream of a table top X-ray SASE FEL. (C) 2002 Elsevier Science B.V. All rights reserved.
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