Longitudinal electron-beam diagnostics play a critical role in the operation and control of x-
ray free-electron lasers, which rely on parameters such as the current profile, the …

The first generation of S-band injectors for free-electron lasers has illustrated high reliability
and performance by driving the latest generation of high brightness machines. However, the …

We present high-resolution measurements of the electron beam energy spread at the
SwissFEL injector as a function of the electron bunch charge, the optics, and the longitudinal …

The intrinsic energy spread of electron beams needs to be measured to characterize and
optimize high-brightness electron beam sources such as those driving x-ray free-electron …

Slice energy spread is one of the key parameters in free electron laser optimizations, but its
accurate measurement is not straightforward. Two recent studies from high energy (≥ 100 …

We present theoretical analysis and design considerations of a THz superradiant FEL. We
derive analytical expressions for the spectral parameter of THz radiation, emitted …

Transverse profile monitors are essential devices to characterize particle beams in
accelerators. Here, we present an improved design of beam profile monitors at SwissFEL …

The European XFEL is equipped with scintillating screens as a profile measurement
monitor. The scintillating material used is Gadolinium Aluminium Gallium Garnet doped with …

Recent studies have identified intra-beam scattering (IBS) as one of the processes that can
have a significant impact on the beam dynamics of linacs with high-density and low-energy …

Energy Recovery Linacs (ERLs) are ideal drivers of inverse Compton scattering (ICS)
photon sources due to the combination of linac quality beams and high repetition rate …