This article attempts to give a historical account and review of technological developments
and innovations in radio frequency (RF) systems for particle accelerators. The evolution from …

Control applications targeting fast industrial processes rely on real-time feasible
implementations. One of such applications is the stabilization of an electron bunch arrival …

Abstract The European X-ray Free-Electron Laser (XFEL) at the Deutsches Elektronen
Synchtrotron (DESY) in Hamburg will, starting in 2015, open up completely new research …

Regulating the arrival time of electron bunches is a crucial step to improve the temporal
resolution of accelerator-based pump-probe experiments. In this regard, an electron beam …

Bunch arrival time monitors (BAMs) are an integral part of the laser-based synchronisation
system which is being developed at the Free Electron Laser in Hamburg (FLASH). The …

Highly precise regulation of accelerator RF fields is a prerequisite for a stable and
reproducible photon generation at Free Electron Lasers such as FLASH. Due to major …

FLASH. FLASH Upgrade and First Results Page 1 FLASH. Free-Electron Laser in Hamburg
FLASH Upgrade and First Results FLASH free-electron laser user facility at DESY Siegfried …

Scientific experiments conducted with the help of a particle accelerator rely on the stability of
the corresponding particle beam. One way of improving this stability is the application of a …

The noise in an RF system limits the achievable RF field stability. The HPRF noise affects
the cavity fields and must be suppressed by the RF controller. The RF detector noise …

For many years a set of historically grown Matlab scripts and tools have been used to
stabilize transversal and longitudinal properties of the electron bunches at the FLASH …