5. Annual MT Meeting

Large-Scale Optical Synchronization System of the European XFEL

Not scheduled

20m

various rooms, please see programme (Helmholtz Institute Jena)

Poster ARD

Speaker

Mr Thorsten Lamb (DESY)

Description

At the European XFEL, a facility-wide optical synchronization system providing a femtosecond-stable timing reference at more than 40 end-stations has been developed and installed. The system is based on an ultra-stable optical master laser oscillator, whose signals are distributed via actively length-stabilized optical fibers to different locations across the accelerator and experimental areas. These signals are used to locally re-synchronize radio-frequency sources, to precisely measure the arrival time of the electron beam for fast beam-based feedbacks, and to phase-lock optical laser systems used for electron bunch generation, beam diagnostics and pump-probe experiments with femtosecond temporal resolution. Here, we present the system's architecture and performance as well as design choices required to implement an extensible, large-scale synchronization infrastructure for accelerators that meets reliability, maintainability and femtosecond performance requirements.