2020 Volume 16 Issue 4 Pages 251-259
The development of superconducting cavities has a history of five decades in Japan. In this period, many world-leading achievements were released, including the world’s first full-scale application, ampere-class beam current accumulation, and the development of high-power input couplers and higher-order-mode dampers. These achievements were based on Japanese technology supported by cooperation with companies.