JACoW is a publisher in Geneva, Switzerland that publishes the proceedings of accelerator conferences held around the world by an international collaboration of editors.
TY - UNPB AU - Schlarb, H. AU - Czwalinna, M.K. AU - Schulz, S. ED - Braun, Hans-Heinrich ED - Chrin, Jan ED - Ganter, Romain ED - Hiller, Nicole ED - Schaa, Volker RW TI - Femtosecond Synchronization of Large Scale FELs - Achievements, Limitations and Mitigation Paths J2 - Proc. of FLS2023, Luzern, Switzerland, 27 August-01 September 2023 CY - Luzern, Switzerland T2 - ICFA Advanced Beam Dynamics Workshop T3 - 67 LA - english AB - Over the past decade, synchronization of large-scale accelerators has advanced from picosecond stability reaching nowadays few femtoseconds only. Driver behind these developments are Free-Electron Lasers, requiring high electron beam compression factor for lasing and the production of ultra-short photon pulses for precision time-evolution experiments in pump-probe laser arrangements. The high control demand of FELs on their electron beam phase space and arrival time triggered a series of key technology development in the accelerator community. These developments span for state-of-the-art RF components, pushing the limits on precision RF cavity control, ultra-stable optical reference distributions to novel new beam diagnostic techniques, all aiming to reach femtosecond beam and pump-probe stabilities. In this presentation, an introduction to key elements causing beam arrival time instabilities and synchronization losses is given. Using EuXFEL and FLASH at example, achievable performance with currently available technologies are summarized. Limitations towards single digit femtosecond or even attosecond synchronization are discussed together with possible mitigation paths. PB - JACoW Publishing CP - Geneva, Switzerland ER -