Accelerating RF field controls for Free-Electron Lasers FLASH and EuXFEL are based on driving multiple superconducting cavities with a single klystron. The realization of the control loop is distributed into several FPGAs. Open loop verification of each subsystem is straightforward but closed loop performance analysis is challenging. Detailed performance evaluation and regression testing are...
The LANSCE accelerator at Los Alamos National Laboratory (LANL) has been in service for 50 years. Efforts to update and modernize crucial systems, many of which are original, are ongoing. This paper reports on refurbishment of the Low-Level Radio Frequency (LLRF) Resonance Control Water System (RCWS) for the half mile long Cavity-Coupled LINAC (CCL). RCWS controls resonance frequency of the...
