Superconducting Radio-Frequency Cavities: Principles, Technology and Applications
Seminar abstract
Superconducting radio-frequency (SRF) cavities are key components of modern accelerator and RF technologies, enabling high efficiency and low power dissipation. This seminar introduces the fundamental principles of SRF cavities and reviews current technological approaches, with emphasis on superconducting thin films. Recent developments in materials are discussed in the context of cavity performance and scalability. Applications in particle accelerators and future high-energy facilities are highlighted.
The seminar will be held in Italian -- Il seminario si terrà in lingua italiana
link: https://tinyurl.com/SRFseminar
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Speakers
Dr Dorothea Fonnesu
Biography:
Dorothea Fonnesu is a senior postdoctoral researcher at the National Institute for Nuclear Physics (INFN), Legnaro National Laboratories, Italy. She previously completed a fellowship at CERN (European Organization for Nuclear Research), Switzerland, funded by the Marie Skłodowska-Curie Actions (MSCA) programme EASITrain. She holds a PhD in Physics, obtained at CERN in collaboration with the University of Siegen and the Helmholtz-Zentrum Berlin (HZB), Germany, in the field of superconducting thin films on copper for superconducting radio-frequency (SRF) cavity applications within the R&D activities for the leptonic Future Circular Collider (FCC-ee). Dorothea Fonnesu’s research currently focuses on the coordination of R&D activities for the production and study of Nb3Sn films on copper via DC magnetron sputtering for SRF applications on small samples, aiming at scalability to elliptical resonant cavities, a critical technology for future particle accelerators. In the recent past years, she contributed to advancing measurement capabilities for superconducting materials at the Central Cryogenic Laboratory at CERN by commissioning a permanently installed measurement station for the contactless determination of the critical temperature of bulk and thin-film samples. In January 2025, she started her mandate as officer of the Italy Chapter of the IEEE Council on Superconductivity (CSC), serving as secretary.