Speaker
YANJUN GU
(The University of Osaka)
Description
Laser-wakefield acceleration (LWFA) offers a promising route toward compact free-electron lasers (FELs), but achieving the required beam quality and stability remains a major challenge. Here, we demonstrate the generation of high-quality, reproducible monoenergetic electron beams using a compact 0.8 J laser system through optimization of the plasma density, electron injection, laser wavefront, and gas-jet stability. The electron beams were successfully transported into an undulator, producing FEL radiation at a central wavelength of 40 nm with an exponential gain of approximately 20. Start-to-end simulations show good agreement with the experiment, supporting the development of compact and tunable XUV FEL sources driven by LWFA.
Author
YANJUN GU
(The University of Osaka)
Co-authors
Prof.
Zhan Jin
(The University of Osaka)
Kai Huang
(National Institutes for Quantum Science and Technology)
Nobuhiko Nakanii
(National Institutes for Quantum Science and Technology)
Dr
Izuru Daito
(National Institutes for Quantum Science and Technology)
Prof.
Toshiya Muto
(The University of Osaka)
Prof.
Shigeru Yamamoto
(KEK)
Masaki Kando
(National Institutes for Quantum Science and Technology)
Prof.
Tomonao Hosokai
(The University of Osaka)