Mainz 2022 – wissenschaftliches Programm

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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 10: Electron Accelerators and FEL’s

AKBP 10.3: Vortrag

Mittwoch, 30. März 2022, 14:30–14:45, AKBP-H14

Simulation for THz FEL seeding at PITZ using pre-bunched electron beams — •Georgi Georgiev¹, Prach Boonpornprasert¹, Wolfgang Hillert², Mikhail Krasilnikov¹, and Xiangkun Li¹ — ¹Deutsches Elektronen-Synchrotron DESY, 15738 Zeuthen, Germany — ²University of Hamburg, 22761 Hamburg, Germany

A THz source with high power and tunability is required for pump and probe experiments at the European XFEL. One option is to use a short accelerator to drive a THz FEL, which could produce THz pulses with the same pulse train structure as the XFEL pulses. The Photo Injector Test facility at DESY in Zeuthen (PITZ) serves as the site for these developments and proof-of-principle experiments on short THz FEL are currently under preparation at this facility. To improve the stability of the THz source, FEL seeding is considered. Arrival time jitter and spectrum from pulse to pulse can be improved by FEL seeding with respect to SASE. This is demonstrated in Genesis simulation results performed with pre-bunched electron beams.