The compact linear accelerator for research and applications (CLARA) is an ultrabright
electron beam test facility being developed at STFC Daresbury Laboratory. The ultimate aim …

Electron beam quality is paramount for X-ray pulse production in free-electron-lasers (FELs).
State-of-the-art linear accelerators (linacs) can deliver multi-GeV electron beams with …

A relativistic electron beam moving in a circular orbit in free space can radiate coherently if
the wavelength of the synchrotron radiation exceeds the length of the bunch. In accelerators …

Recent studies of the performance of radio-frequency (rf) copper cavities operated at
cryogenic temperatures have shown a dramatic increase in the maximum achievable …

It is widely appreciated that the performance of self-amplified spontaneous emission free-
electron lasers (FELs) depends critically on the properties of the drive beam. In view of this …

In this paper we report on large-scale high resolution simulations of beam dynamics in
electron linacs for the next-generation x-ray free electron lasers (FELs). We describe key …

The high brightness electron beam required by a short wavelength self-amplified
spontaneous emission free-electron laser (FEL) may be reached only with an accurate …

The effect of the coherent synchrotron radiation (CSR) becomes evident, and leads to
increased beam energy spread and transverse emittance dilution, as both the emittance and …

We develop a new method to simulate coherent synchrotron radiation numerically. It is
based on the mesh calculation of the electromagnetic field in the frequency domain. We …

PAL-XFEL utilizes a three-chicane bunch compression (3-BC) scheme (the very first of its
kind in operation) for free-electron laser (FEL) operation. The addition of a third bunch …