Dresden 2026 – scientific programme
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AKBP: Arbeitskreis Beschleunigerphysik
AKBP 13: Novel Accelerators II
AKBP 13.1: Talk
Thursday, March 12, 2026, 11:30–11:45, SCH/A117
High-Repetition-Rate Electron Beams from a Multi-kHz LPA Driven by an Industrial Laser System — Bonaventura Farace1, Kristijan Poder1, •Taegyu Pak1, Esmerando Escoto1, Nikita Khodakovskiy1, Christoph Heyl1, and Wim Leemans1,2 — 1Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany — 2University of Hamburg, Department of Physics, Jungiusstr. 9, 20355 Hamburg, Germany
Laser-plasma accelerators (LPAs) provide a compact platform for generating ultrashort, high-brightness electron beams and are gaining attention as next-generation electron sources. For practical use, the driving laser must operate stably at high repetition rates with high average power and scalability. Here, we report the first demonstration of electron acceleration using an industrial Yb-based laser compressed via a multi-pass cell (MPC) post-compression stage. The Yb:YAG laser was spectrally broadened in a 2-m long MPC and compressed from 1.3 ps to 49 fs, delivering 9 mJ on target at repetition rates up to 12.5 kHz. With these post-compressed pulses, we generated high-repetition-rate electron beams and characterised their charge, energy spectrum and transverse beam profile. The source produced 10 pC per shot with a thermal-like spectrum extending up to 5 MeV and operated robustly in the multi-kHz regime. These results demonstrate a new technological route for generating high-repetition-rate electron beams with industrial Yb lasers. They also open pathways toward applications that require high repetition rates and ultrashort pulses, including ultrafast electron diffraction and FLASH-type irradiation schemes.
Keywords: Laser wake field acceleration; Laser plasma accelerators; Ytterbium-YAG-Laser; Multi-pass cell(MPC); FLASH radiotherapy