Development of a Traveling-Wave (TW) SRF cavity

Conference · Fri Nov 15 04:00:00 EST 2024

DOI:https://doi.org/10.2172/2477634· OSTI ID:2477634

Furuta, F. ^[1]; McGee, K. ^[1]; Kazakov, S. ^[1]; Khabiboulline, T. ^[1]; Ng, T. ^[1]; Yakovlev, V. ^[1]

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1. Fermilab

Traveling-wave technology can push the accelerator field gradient of niobium SRF cavity to 70MV/m or higher beyond the fundamental limit of 50~60MV/m in Standing-Wave regime. The 1st demonstration of TW resonance excitation in a proof-of-principle 3-cell SRF cavity in 2K liquid helium was successfully carried out at Fermilab in collaboration with Euclid Techlabs. In parallel with that, to advancing TW technologies necessary more for future accelerator-scale one, Fermilab has proposed a preliminary RF design of a half-meter scale TW SRF cavity by considering the physical dimensions of existing SRF facilities and the lessons learned from the 3-cell,. It consists of a 7-cell structure and a power feedback waveguide (WG) loop with new RF configurations to control TW resonance. Development efforts toward a TW 7-cell has been in progress. Here we report the recent activities and progresses of those.

• Research Organization: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
• DOE Contract Number: AC02-07CH11359
• OSTI ID: 2477634
• Report Number(s): FERMILAB-SLIDES-24-0296-TD; oai:inspirehep.net:2848612
• Country of Publication: United States
• Language: English