7 May 2017 Requirements on the LWFA electron beam for the user-oriented photon source
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Abstract
The laser-driven Undulator X-ray source (LUX) is designed to be a user beamline providing ultra-short EUV photon pulses with a central wavelength tuneable in the range of 0.4 to 4.5 nm and a peak brilliance of up to 1021 photons/(s.mrad2.mm2.0.1% B.W.), which makes this source comparable with modern synchrotron sources. The source shall provide a focal spot size well below 10 μm and a range of auxiliary beams for complex pump-and-probe experiments and it is also an important experimental milestone towards a future laser driven Free Electron Laser. Unique femtosecond nature of the laser-plasma electron acceleration in combination with extremely small transverse emittance of the electron beam is the major advantage of the LWFA technique. Preservation of the electron beam quality is a complicated task for a dedicated electron beam line, which has to be designed to transport the electron beam from the LWFA source up to the undulator. In this report we discuss main requirements on the LWFA source and the electron beam optics of the LUX source and solutions to produce required quality photon beam in the undulator and we also discuss the effect of realistic setup parameters on the quality of the electron beam in the undulator within the range of systematic errors.
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Alexander Molodozhentsev, Lukáš Přibyl, Georg Korn, Paul Winkler, Andreas R. Maier, "Requirements on the LWFA electron beam for the user-oriented photon source", Proc. SPIE 10240, Laser Acceleration of Electrons, Protons, and Ions IV, 1024015 (7 May 2017); doi: 10.1117/12.2265577; https://doi.org/10.1117/12.2265577
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