Hydroforming SRF Three-cell Cavity from Seamless Niobium Tube

Conference · Wed Jun 01 00:00:00 EDT 2016

DOI:https://doi.org/10.18429/JACoW-IPAC2016-WEPMB023· OSTI ID:1352048

Yamanaka, Masashi ^[1]; Dohmae, Takeshi ^[1]; Hocker, Andy ^[2]; Inoue, Hitoshi ^[1]; Park, Gunn-Tae ^[1]; Tajima, Tsuyoshi ^[3]; Umemori, Kensei ^[1]

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1. KEK, Tsukuba
2. Fermilab
3. Los Alamos

We are developing the manufacturing method for superconducting radio frequency (SRF) cavities by using a hydroforming instead of using conventional electron beam welding. We expect higher reliability and reduced cost with hydroforming. For successful hydroforming, high-purity seamless niobium tubes with good formability as well as advancing the hydroforming technique are necessary. Using a seamless niobium tube from ATI Wah Chang, we were able to successfully hydroform a 1.3 GHz three-cell TESLA-like cavity and obtained an Eacc of 32 MV/m. A barrel polishing process was omitted after the hydroforming. The vertical test was carried out with very rough inside surface. We got amazing and interesting result.

• Research Organization: Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP)
• DOE Contract Number: AC02-07CH11359
• OSTI ID: 1352048
• Report Number(s): FERMILAB-CONF-16-660-TD; 1470140
• Resource Relation: Conference: 7th International Particle Accelerator Conference, Busan, Korea, 05/08-05/13/2016
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS