Göttingen 2025 – scientific programme

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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 9: Novel Accelerator Concepts III and Hadron Accelerators

AKBP 9.3: Talk

Thursday, April 3, 2025, 14:30–14:45, ZHG004

BEETLE - High average power laser-plasma accelerator using a 1 kW Yb-based laser with nonlinear compression — •Tatiana Nechaeva, Timo Eichner, Sören Jalas, Christian Werle, Lutz Winkelmann, Guido Palmer, Manuel Kirchen, and Andreas Maier — DESY, Hamburg, Germany

Laser-plasma acceleration (LPA) is a promising technology for a future compact accelerator. However, current Ti:Sapphire laser technology typically supports few-hertz repetition rates, with scaling to higher rates being challenging. High energy, kHz-level Yb-based laser systems have longer, sub-picosecond pulses. After nonlinear spectral broadening in a multipass cell, these pulses can be compressed to tens of fs duration, becoming a promising LPA driver alternative. In this poster, we introduce the BEETLE project, recently initiated at DESY, that aims to demonstrate high-energy, high repetition rate electron acceleration. The driver laser pulses, provided by a 5 kHz Yb-based laser system (Trumpf Scientific Lasers), have an energy of 200 mJ and are compressible to 30 fs via spectral broadening. We present an overview, goals and the current status of the project.

Keywords: Advanced accelerator concepts; Laser-plasma acceleration; High average power acceleration; Yb-based laser system; Nonlinear laser pulse compression