The first-ever international workshop on Ferroelectric Fast Reactive Tuners (FE-FRTs) was held at Helmholtz-Zentrum Berlin (HZB) on November 13–14, 2025, with sponsorship from Euclid Techlabs. This inaugural event marked a major step forward in building a global community around fast electronic tuning technologies for superconducting RF systems.
A New Era in SRF Frequency Control
FE-FRTs represent a breakthrough in SRF cavity tuning:
- They provide ultra-fast frequency adjustment without mechanical motion,
- Enable electronic, room-temperature control of cavity detuning,
- Offer response times capable of active microphonics compensation, thereby significantly reducing RF amplifier power requirements.
Beyond microphonics control, FE-FRTs are drawing strong interest from CERN and other major accelerator centers for transient detuning correction, beam loading compensation, and fast variable attenuation in high-power RF distribution systems. Additional applications include fast control of phase-locked magnetrons.
Euclid Techlabs is proud to serve as a ferroelectric material supplier for several ongoing FE-FRT development programs at CERN, HZB, and Lancaster University in Europe, as well as Jefferson Lab in the United States.
A Global Community Comes Together
The 2025 workshop gathered researchers, accelerator specialists, RF engineers, and materials scientists from around the world. Participants shared updates on prototype FRT designs, material advancements, high-power testing, and integration strategies for next-generation accelerator facilities.
The discussions highlighted both the rapid progress in FE-FRT technology and the growing international momentum toward deploying fast electronic tuners in SRF systems.