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arXiv · 1304.7420

Compensating the electron beam energy spread by the natural transverse gradient of laser undulator in all-optical x-ray light sources

Tong Zhang·Chao Feng·Haixiao Deng·Dong Wang·Zhimin Dai·Zhentang Zhao
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Abstract

All-optical ideas provide a potential to dramatically cut off the size and cost of x-ray light sources to the university-laboratory scale, with the combination of the laser-plasma accelerator and the laser undulator. However, the large longitudinal energy spread of the electron beam from laser-plasma accelerator may hinder the way to high brightness of these all-optical light sources. In this paper, the beam energy spread effect is proposed to be significantly compensated by the natural transverse gradient of a laser undulator when properly transverse-dispersing the electron beam. Theoretical analysis and numerical simulations on conventional laser-Compton scattering sources and high-gain all-optical x-ray free-electron lasers with the electron beams from laser-plasma accelerators are presented.

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Tong Zhang, Chao Feng, Haixiao Deng, Dong Wang, Zhimin Dai, Zhentang Zhao. 2014-06-05. Compensating the electron beam energy spread by the natural transverse gradient of laser undulator in all-optical x-ray light sources. https://doi.org/10.1364/oe.22.013880

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