Nb₃Sn Superconducting RF Cavities: R&D Progress at Fermilab and Opportunities [Poster]

Technical Report · Tue Mar 10 00:00:00 EDT 2020

DOI:https://doi.org/10.2172/1605569· OSTI ID:1605569

Posen, S.  ^[1]

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1. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)

Nb₃Sn becomes superconducting at twice as high temperature as our standard SRF material niobium. This allows us to efficiently operate Nb₃Sn cavities at 4.4 K instead of the usual 2 K. This reduces cryogenic costs and even makes it possible to use a cryocooler instead of a large, complex cryogenic plant. The superheating field Hsh of Nb₃Sn is twice that of niobium. Hsh is thought to be the ultimate limit for a defect-free superconductor. Nb₃Sn cavities being made today are still about a factor of 4 away from this ultimate limit, but R&D has been leading to substantial progress towards this goal

• Research Organization: Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP)
• DOE Contract Number: AC02-07CH11359
• OSTI ID: 1605569
• Report Number(s): FERMILAB-POSTER-20-044-TD; oai:inspirehep.net:1787172; TRN: US2103814
• Country of Publication: United States
• Language: English

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