Conveners
RF: Recent designs and progress
- Anne-Marie Valente-Feliciano (Jefferson Lab)
RF: Materials
- Robert Alan Rimmer
RF: Review: RF system concepts and requirements
- Jiyuan Zhai (IHEP)
RF: Review: Directions for R&D
- Samuel Elliott Posen (Fermilab)
Recently, the U.S. HEP community has developed a 10-year research roadmap for the accelerator RF technology. In this contribution, I present a portion of the roadmap dealing with developing superconducting RF technology for future Intensity Frontier and Energy Frontier HEP accelerators.
In the design study of the FCC-ee an RF cavity system is required to provide the necessary accelerating voltage for the four operating modes of the FCC-ee, i.e. Z, W, H and tt-bar. Based on the preliminary studies, a single design that can serve all four setups is not feasible. The H and tt-bar systems are two demanding cases that are characterized by high accelerating voltage of up to 10 GV....
Plans for FCC call for 11 GV of RF voltage for ee-tt, corresponding to ~2600 SRF cells. In this contribution, we examine recent developments in state-of-the-art SRF technology that can reduce the cost burden of this significant infrastructure. Topics of discussion include new nitrogen infusion processing for bulk niobium, progress in Nb3Sn coatings, and preparation techniques that promote flux...
Previous experiments have demonstrated a better performance obtained for thin film Nb/Cu RF cavities on electropolished copper substrates compared to chemically polished ones. In the context of the Future Circular Collider (FCC) study, CERN is designing a new copper electropolishing facility capable of processing elliptical cavities from 1.3 GHz to 400 MHz (single cell); this facility is to...
