Performance of the MTCA.4 Based LLRF System at FLASH

The Free Electron Laser in Hamburg (FLASH) is the first linac which is equipped with a MicroTCA.4 based low level RF control system. Precise regulation of RF fields is essen- tial for stable and reproducible photon generation. FLASH benefits from the performance increase using the new devel- opments like, accurate and precise field detection devices. Further enormous increase of processing capabilities allow for more sophisticated controller applications which better the overall performance of the regulation.