Laser-slicing at a low-emittance storage ring

Laser-slicing at a diffraction-limited storage ring light source in the soft X-ray region is investigated with theoretical and numerical modelling. It turns out that the slicing efficiency is favoured by the ultra-low beam emittance, and that slicing can be implemented without interference to the standard multi-bunch operation. Spatial and spectral separation of the sub-picosecond radiation pulse from a hundreds of picosecond-long background is achieved by virtue of 1:1 imaging of the radiation source. The spectral separation is enhanced when the radiator is a transverse gradient undulator. The proposed configuration applied to the Elettra   2.0 six-bend achromatic lattice envisages total slicing efficiency as high as 10 − 7, one order of magnitude larger than the demonstrated state-of-the-art, at the expense of pulse durations as long as 0.4   ps FWHM and average laser power as high as ∼ 40   W.

Source: Journal of Synchrotron Radiation - August 26, 2019 Category: Physics Authors: Di Mitri, S. Barletta, W. Bianco, A. Cudin, I. Diviacco, B. Raimondi, L. Spampinati, S. Spezzani, C. Masciovecchio, C. Tags: storage ring diffraction limit laser slicing undulator radiation synchrotron light source radiation background research papers Source Type: research