Speaker
Mr
Bernhard Scheible
(Technische Hochschule Mittelhessen)
Description
Numerous advanced applications of X-ray free-electron lasers require pulse durations and time resolutions in the order of only a few femtoseconds or better. The generation of these pulses to be used in time-resolved experiments require synchronization techniques that can simultaneously lock all necessary components to a precision in the range of 1fs only. To improve the experimental conditions at existing facilities and enable future development of seeded FELs, a new all-optical synchronization system at FLASH and XFEL was implemented, which is based on pulsed optical signals rather than electronic RF signals. In collaboration with DESY, Hamburg the all-optical synchronization system is used to ensure a timing stability on the 10fs scale at XFEL.
For a future ultra-low charge operation mode down to 1pC at XFEL an overall synchronization of (5+1)fs r.m.s. or better is necessary.
This contribution presents a new concept for a ultra-wideband pickup structure for beampipe-diameters down to 10mm for frequencies up to 100GHz or higher and at the same time providing sufficient output signal for the attached EOMs.
Primary authors
Prof.
Andreas Penirschke
(Technische Hochschule Mittelhessen)
Mr
Bernhard Scheible
(Technische Hochschule Mittelhessen)
Dr
Holger Schlarb
(DESY)
Dr
Marie Kristin Czwalinna
(DESY)
Dr
Wolfgang Ackermann
(Technische Universität Darmstadt)
