18–26 Sept 2025
Ito International Research Center
Asia/Tokyo timezone

Fabrication of the prototype spoke cavity for the JAEA-ADS linac

THP39
25 Sept 2025, 14:30
3h
Ito International Research Center

Ito International Research Center

Tokyo
Board: THP39
Poster Presentation MC3: Cavities Thursday Poster Session

Speaker

Jun Tamura (Japan Atomic Energy Agency)

Description

Japan Atomic Energy Agency (JAEA) has been proposing an accelerator-driven nuclear transmutation system (ADS) as a future nuclear system to efficiently reduce high-level radioactive waste generated at nuclear power plants. As the first step toward the full-scale CW proton linac for the JAEA-ADS, we are currently prototyping a low-beta (around 0.2) single-spoke cavity. Because there is no experience in manufacturing superconducting spoke cavities in Japan, prototyping and performance evaluation of the cavity are essential to ensure the feasibility of the JAEA-ADS. The actual cavity fabrication started in 2020, and the cavity assembly by electron-beam welding was finally completed in fiscal year 2024. The fabrication of the prototype spoke cavity is presented.

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Author

Jun Tamura (Japan Atomic Energy Agency)

Co-authors

Yasuhiro Kondo (Japan Atomic Energy Agency) Bruce Yee-Rendon (Japan Atomic Energy Agency) Shin-ichiro Meigo (Japan Atomic Energy Agency) Fujio Maekawa (Japan Atomic Energy Agency) Eiji Kako (High Energy Accelerator Research Organization) Kensei Umemori (High Energy Accelerator Research Organization) Hiroshi Sakai (High Energy Accelerator Research Organization) Takeshi Dohmae (High Energy Accelerator Research Organization)

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