Within the RF2.0 research initiative, Cryoelectra has successfully implemented and tested an innovative control upgrade for a solid-state RF amplifier at the Helmholtz-Zentrum Berlin (HZB). The project focuses on improving energy efficiency in accelerator operations—an increasingly critical factor for both cost reduction and sustainability.
At the core of the upgrade is the newly developed Adaptive Compression Point Control (ACPC) algorithm. Unlike conventional systems that require expert-level RF tuning, the ACPC approach simplifies operation significantly: users only need to define the desired output power, while the algorithm automatically optimizes internal amplifier parameters for maximum efficiency.
The demonstrator system—a 75 kW, 500 MHz CRE-331D amplifier—was retrofitted with a new power supply architecture, enabling a wider voltage range and thus more flexible operation across varying load conditions. This is particularly relevant in real-world accelerator environments, where amplifiers typically run below peak power levels, often resulting in reduced efficiency.
A key advantage of the solution is its applicability to existing installations. The upgrade was designed as a retrofit kit, requiring minimal infrastructure changes while delivering measurable performance improvements. This opens the door for research facilities to enhance efficiency without the need for complete system replacements.
Following successful installation and commissioning, the system is now operational and ready for extended performance evaluation under real operating conditions. The results are expected to contribute to more sustainable and cost-effective RF system operation in accelerator facilities worldwide.
