Dresden 2017 – wissenschaftliches Programm
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AKBP: Arbeitskreis Beschleunigerphysik
AKBP 7: Synchrotron Radiation and FELs
AKBP 7.6: Vortrag
Donnerstag, 23. März 2017, 10:45–11:00, MOL 213
Design of Optical Setups for High-Yield Optical Undulators in the Traveling-Wave Thomson-Scattering geometry — •Klaus Steiniger1,2, Daniel Albach1, Alexander Debus1, Markus Loeser1, Richard Pausch1,2, Fabian Roeser1, Ulrich Schramm1,2, Matthias Siebold1, and Michael Bussmann1 — 1Helmholtz-Zentrum Dresden-Rosendorf, Bautzner Landstraße 400, 01328 Dresden — 2Technische Universität Dresden, 01062 Dresden
Traveling-Wave Thomson-Scattering (TWTS) can realize ultra-compact, inherently synchronized and highly brilliant light sources from the ultraviolet to the hard X-ray range. In TWTS ultrashort laser pulses and relativistic electron bunches are utilized in a side-scattering geometry where their directions of motion enclose an interaction angle. By tilting the laser pulse-front TWTS ensures continuous overlap of laser and electrons while these traverse the laser cross-sectional area. This enables interaction over hundreds to thousands of optical undulator periods, enough to allow for optical free-electron laser (OFEL) operation. After shortly introducing the TWTS geometry, the design of optical setups to form laser pulses for TWTS is presented in the talk. This setup strategy provides laser dispersion compensation during interaction, required due to angular dispersion of the laser pulse, which is especially relevant when building compact, high-yield hard X-ray TWTS sources in large interaction angle setups. Determining parameters of TWTS setups is illustrated in examples of an ultraviolet TWTS OFEL and a hard X-ray TWTS sources.