title: Electron-beam conditioning by thomson scattering.
abstract: A method is proposed for conditioning electron beams via Thomson scattering. The conditioning provides a quadratic correlation between the electron energy deviation and the betatron amplitude of the electrons, which results in enhanced gain in free-electron lasers. Quantum effects imply conditioning must occur at high laser fluence and moderate electron energy. Conditioning of x-ray free-electron lasers should be achievable with present laser technology, leading to significant size and cost reductions of these large-scale facilities.
authors.affiliation: Center for Beam Physics, Ernest Orlando Lawrence Berkeley National Laboratory, University of California, Berkeley, California 94720, USA.
authors.forename: C B
authors.initials: CB
authors.lastname: Schroeder
authors.forename: E
authors.initials: E
authors.lastname: Esarey
authors.forename: W P
authors.initials: WP
authors.lastname: Leemans