Speaker
Description
Like many other subsystems in particle accelerators, the optical synchronization system at the European XFEL implements a joint high-performance control task over individual stations along the spatial extend of the facility. In the case of the optical synchronization system, this ensures a stable timing reference in the region of a few femtoseconds over more than 3.5km distance. Using numerical simulations, we show that the performance can be improved even further by considering all individual control loops in the subsystem as part of a distributed complex system rather than tuning each loop individually. The resulting distributed optimization problem is in general rendered NP-hard because of the information constraints between the spatially separated systems and ways of obtaining a tractable program are discussed prior.
