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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 14: Light Sources and FEL’s

AKBP 14.7: Talk

Thursday, March 21, 2024, 17:45–18:00, E 020

Methods for high-repetition THz production at XFEL — •Karel Peetermans1, Wolfgang Hillert2, and Francois Lemery11DESY — 2Universität Hamburg

In order to exploit the full scientific potential of high-energy XFELs (electron energy > 10 GeV), it is necessary to provide adequate pump sources to enable pump-probe science. Users of the European XFEL have requested a THz pump source matching the machine repetition rate (10 Hz burst mode with up to 2700 bunches per burst). In addition, they have demanded a spectral range spanning 0.1-30 THz with a tunable bandwidth to investigate broad and narrow resonances in matter. The EuXFEL R&D project, STERN, is exploring beam-based radiation generation methods using Cherenkov waveguides and diffraction radiation to satisfy these user requirements. This presentation will provide an overview of radiation generation from Cherenkov waveguides and diffraction sources, including theory, simulation and previous experimental results. We will cover a technical overview of our experimental area including the lattice and vacuum design. We furthermore discuss the collection and transport of the generated THz radiation. Finally, we will mention plans for THz diagnostics to characterize the generated radiation.

Keywords: THz; wakefields; waveguides; diffraction radiation

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