Inicio  /  Instruments  /  Vol: 6 Par: 1 (2022)  /  Artículo
ARTÍCULO
TITULO

Compact LWFA-Based Extreme Ultraviolet Free Electron Laser: Design Constraints

Alexander Yu. Molodozhentsev and Konstantin O. Kruchinin    

Resumen

The combination of advanced high-power laser technology, new acceleration methods and achievements in undulator development offers the opportunity to build compact, high-brilliance free electron lasers driven by a laser wakefield accelerator. Here, we present a simulation study outlining the main requirements for the laser?plasma-based extreme ultraviolet free electron laser setup with the aim to reach saturation of the photon pulse energy in a single unit of a commercially available undulator with the deflection parameter K0" role="presentation">??0K0 K 0 in the range of 1?1.5. A dedicated electron beam transport strategy that allows control of the electron beam slice parameters, including collective effects, required by the self-amplified spontaneous emission regime is proposed. Finally, a set of coherent photon radiation parameters achievable in the undulator section utilizing the best experimentally demonstrated electron beam parameters are analyzed. As a result, we demonstrate that the ultra-short, few-fs-level pulse of the photon radiation with the wavelength in the extreme ultraviolet range can be obtained with the peak brilliance of ~7×1028" role="presentation">7×10287×1028 7 × 10 28 photons/pulse/mm2" role="presentation">22 2 /mrad2" role="presentation">22 2 /0.1%bw.

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