Speaker
Paul Winkler
(Center for Free-Electron Laser Science & Department of Physics, University of Hamburg, Hamburg, Germany and DESY)
Description
A crucial parameter for the demonstration of a laser-plasma driven free-electron laser is the electron beam emittance and its stability. Here, we show energy resolved emittance measurements of ionisation-injected plasma electron beams performed with both a conventional quadrupole scan and measured from single-shots. We show that the initial phase-space properties obtained from both methods deviate by less than 10 % and are constant over a narrow energy-band considered for the retrieval. The initial beam emittance is as low as 0.7 mm mrad. Finally, we demonstrate first measurements of chromatic emittance growth for laser-plasma accelerated electron beams.
Authors
Paul Winkler
(Center for Free-Electron Laser Science & Department of Physics, University of Hamburg, Hamburg, Germany and DESY)
Lars Hübner
(Center for Free-Electron Laser Science & Department of Physics, University of Hamburg, Hamburg, Germany)
Mr
Björn Hubert
(Center for Free-Electron Laser Science & Department of Physics, University of Hamburg, Hamburg, Germany)
Soeren Jalas
(Center for Free-Electron Laser Science and Department of Physics, University of Hamburg)
Manuel Kirchen
(Center for Free-Electron Laser Science & Department of Physics, University of Hamburg, Hamburg, Germany)
Vincent Leroux
(Center for Free-Electron Laser Science & Department of Physics, University of Hamburg, Hamburg, Germany)
Philipp Messner
(Center for Free-Electron Laser Science & Department of Physics, University of Hamburg, Hamburg, Germany)
Matthias Schnepp
(Center for Free-Electron Laser Science & Department of Physics, University of Hamburg, Hamburg, Germany)
Maximilian Trunk
(Center for Free-Electron Laser Science & Department of Physics, University of Hamburg, Hamburg, Germany)
Christian Werle
(Center for Free-Electron Laser Science & Department of Physics, University of Hamburg, Hamburg, Germany)
Bernhard Schmidt
(DESY)
Andreas Maier
(Center for Free-Electron Laser Science & Department of Physics, University of Hamburg, Hamburg, Germany)
