Speaker
Description
Low-Level RF (LLRF) systems are essential for maintaining amplitude and phase stability in modern linear accelerators, directly affecting beam quality and operational reliability. The increasing use of X-band technology in compact, high-gradient linacs enables ultra-short RF pulses and higher accelerating fields, while also increasing sensitivity to phase noise, timing jitter, and thermal effects. To address these challenges, a dedicated X-band LLRF prototype has been developed within the framework of the EuPRAXIA Doctoral Network for application in next-generation X-band linear accelerators. The system combines a high-speed RF front-end with FPGA based digital back-end optimized for fast pulsed operation, low-latency processing, and precise amplitude and phase control. After extensive laboratory testing, the prototype has been validated on a real accelerator test bench. This paper presents the system's concept and experimental results, including pulse-to-pulse stability and phase noise performance. The results confirm the feasibility of the proposed X-band LLRF approach for future high-gradient linac applications.
Funding Agency
This project has received funding from the European Union‘s Horizon Europe research and innovation programme under grant agreement no. 101073480.
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