Speaker
Description
The introduction of variable reactances, such as those enabled by ferroelectric fast reactive tuners (FE-FRTs); offers new avenues for dynamic field control in superconducting RF cavities. This contribution examines how localized reactive elements affect field flatness and mode separation in multicell SRF structures. Using simplified transmission-line models and warm bead-pull measurements, we quantify the relationship between reactance magnitude, field distortion, and mode coupling. The study highlights both the potential and the challenges of implementing active, non-mechanical tuners in multi-resonant environments. These results provide practical design insight for future FE-FRT applications in high-Q SRF systems, where precision and stability must coexist with fast frequency control.
Funding Agency
This work is supported by Jefferson Science Associates, LLC under U.S. DOE Contract No. DE-AC05-06OR23177
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