Figure 5
From: Characterisation of microbunching instability with 2D Fourier analysis
Example of 2D microbunching analysis for a bunch compressed using BC1 only, with the laser heater off. The two satellites located around \(\left[\pm 20\ {\rm{THz}},\mp 3.5\ {{\rm{MeV}}}^{-1}\right]\) in the middle plot represent the modulations in intensity that are visible in a. (a) Longitudinal phase space. (b) Fourier spectrum of a in frequency space. (c) Zoomed-in Fourier spectrum of a in wavelength space - mean of 20 shots. (a) Longitudinal phase space. (b) Fourier spectrum of (a) in frequency space. (c) Zoomed-in Fourier spectrum of (a) in wavelength space (mean of 20 shots).
