Speaker
Description
Achieving high RF field stability in accelerating cavities driven by microsecond-scale pulses remains a challenge for modern LLRF systems. The short pulse duration limits the implementation of conventional FPGA-based intra-pulse feedback, while pulse-to-pulse correction alone cannot fully compensate for phase perturbations introduced by the high-power RF chain.
An implementation of this novel feedback concept was developed and deployed at the INFN SPARC_LAB facility, representing the first realization of its kind. It is now routinely operated with state-of-the-art performance, demonstrating significantly improved phase stability compared with conventional pulse-to-pulse control.
We present a new approach for short-pulse operation, based on a different architecture that simplifies system integration while enabling intra-pulse feedback capabilities. The design and experimental validation are presented, including measurements performed at the INFN SPARC_LAB facility. This implementation extends the Libera LLRF platform with a dedicated solution for advanced feedback applications, showing strong potential for accelerators requiring improved field stability and pulse control.
| Abstract Classification | Control Hardware Platfroms |
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