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SMuK 2023 – scientific programme

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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 2: Advanced Light Sources and their Instrumentation

AKBP 2.6: Talk

Monday, March 20, 2023, 17:15–17:30, CHE/0184

Simulation Studies on a High-Gain XUV FEL Oscillator at FLASH — •Margarit Asatrian1, Georgia Paraskaki2, Velizar Miltchev1, and Wolfgang Hillert11University of Hamburg, 22761 Hamburg, Germany — 2Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany

Externally seeded high-gain FELs can generate fully coherent radiation with high shot-to-shot stability. With the application of harmonic conversion schemes, these qualities can be achieved at wavelengths down to the soft X-Ray range. However, at the moment, such FEL schemes aimed at the generation of short-wavelength radiation are limited in their repetition rate by the suitable seed laser sources and thus are unable to operate at the full repetition rate of superconducting machines. Cavity-based FELs have been proposed as a possible solution that would allow the generation of short-wavelength, fully coherent FEL radiation at high repetition rates. We present simulation studies for such a high-gain FEL oscillator, which is planned to be implemented at FLASH. The setup is aimed to operate at the repetition rate of 3 MHz, generating fully coherent radiation at the wavelength of 13.5 nm. The electron beam bunched at 13.5 nm can be further used in a harmonic conversion scheme to generate fully coherent radiation at much shorter wavelengths.

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