Contribution to a conference proceedings

PUBDB-2025-01765

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Courant-Snyder formalism for modeling, optimizing and simulating broadband THz radiation transport

Peetermans, K. C. A. (Corresponding author)DESY* ; Floettmann, K.DESY* ; Lemery, F.DESY* ; Amorim Goncalves Giesteira, F.DESY* ; Müller, L.DESY* ; Wohlenberg, T.DESY* ; Kalender, V.DESY* ; Wernsmann, J.DESY*

2025

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Please use a persistent id in citations: doi:10.18429/JACoW-IPAC25-TUPM031

Abstract: In order to exploit the scientific potential of user-oriented accelerator facilities, it is necessary to provide adequate pump sources to enable pump-probe science. The EuXFEL R&D project, STERN, aims to equip X-ray users with an accelerator-based THz source matching the high repetition rate of the XFEL. The proposed THz radiation generation methods involve Cherenkov wakefield structures and diffraction radiation, aiming to produce a spectrum from $300 \ \mathrm{GHz}$ to $ 30 \ \mathrm{THz}$. To enable experimental characterization, both broadband and narrowband pulses must be transported through a single beamline to a radiation-shielded laboratory. A major challenge has been the simulation, optimization and design of the STERN beamline. The OCELOT accelerator lattice optimizer is adapted for optical transport with mirrors substituting traditional focusing magnets. The performance is corroborated using a THz transport code that considers beam clipping and diffraction. The optimized beamline achieves efficient transport over 10 meters, maintaining over 70% source-to-end efficiency across $1-30\ \mathrm{THz}$.

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Contributing Institute(s):

1. Beschleunigerphysik (MPY)
2. Koordination des XFEL-Beschleunigers (MXL)

Research Program(s):

1. 6G13 - Accelerator of European XFEL (POF4-6G13) (POF4-6G13)
2. 621 - Accelerator Research and Development (POF4-621) (POF4-621)

Experiment(s):

1. Facility (machine) XFEL

Appears in the scientific report 2025

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