Progress and challenges in traveling-wave (TW) SRF cavity

Conference · Mon Jan 06 04:00:00 EST 2025

DOI:https://doi.org/10.18429/JACoW-LINAC2024-THAA009· OSTI ID:2510780

Furuta, F. ^[1]; McGhee, K. ^[1]; Kazakov, S. ^[1]; Khabiboulline, T. ^[1]; Yakovlev, V. ^[1]; Avrakhov, P. ^[2]; Kostin, R. ^[2]

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1. Fermilab
2. Euclid Techlabs, Solon

Traveling-wave (TW) technology can push the accelerator field gradient of niobium SRF cavity to 70MV/m or higher beyond the limit of 50~60MV/m in Standing-wave (SW) technology. The early stages of TW SRF cavity developments had been funded by several SBIR grants to Euclid Techlabs and completed in collaboration with Fermilab through a 1-cell prototype and a proof-of-principle 3-cell TW cavity. The TW resonance excitation in the 3-cell TW cavity at 2K was demonstrated through the low power RF test in early 2024. A high-power test of the 3-cell in TW mode being prepared. To advance a design and technology to fabricate a novel high gradient TW SRF cavity, FNAL proposed a half-meter TW RF design and R&Ds to realize that are in progress. Here we will report the recent progress in the 3-cell TW cavity and the challenges towards a half-meter scale TW cavity.

• 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: 89243024CSC000002
• OSTI ID: 2510780
• Report Number(s): FERMILAB-CONF-24-0537-TD; oai:inspirehep.net:2865209
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS