6 papers
RF regulation with superconducting cavities and beam operation using a frequency shifted cavity
Sven Pfeiffer, Valeri Ayvazyan, Julien Branlard +11
The free-electron laser FLASH at DESY and the European XFEL are operated with superconducting radio frequency cavities and supply beam to several user experiments. The switching ti…
Pickup concepts for ultra-low charged short bunches in X-Ray Free-Electron Lasers
Bernhard E. J. Scheible, Stefano Mattiello, Marie K. Czwalinna +4
The all-optical synchronization systems used in various X-ray free-electron lasers (XFEL) such as the European XFEL observe the transient fields of passing electron bunches coupled…
High-fidelity Prediction of Megapixel Longitudinal Phase-space Images of Electron Beams using Encoder-Decoder Neural Networks
Jun Zhu, Ye Chen, Frank Brinker +3
Modeling of large-scale research facilities is extremely challenging due to complex physical processes and engineering problems. Here, we adopt a data-driven approach to model the…
Real-Time Redundancy for the 1.3 GHz Master Oscillator of the European-XFEL
Bartosz Gąsowski, Tomasz Owczarek, Krzysztof Czuba +2
Many modern large-scale facilities, like European X-ray Free Electron Laser (E-XFEL), require precise synchronisation, often down to femtosecond level. Even a very short interrupti…
Phase Drift Compensating RF Link for Femtosecond Synchronization of E-XFEL
Dominik Sikora, Krzysztof Czuba, Pawel Jatczak +4
Modern high-energy particle accelerators and Free-Electron Lasers incorporate large quantities of sensitive RF and microwave frequency devices distributed over kilometer distances.…
Simulation of microphonic effects in high TESLA cavities during CW operations
A. Bellandi, W. Cichalewski, J. Branlard +4
This document describes a new package to compute high performance simulations of a module of superconducting accelerating cavities from the LLRF controller perspective. The reason…