Retrospective of RIBF Construction and Brief History of RIKEN’s Accelerators on the Occasion of the 100^th Anniversary of RIKEN, the Birth Place of Japanese Accelerator-Based Science

Abstract

This year is the 100^th anniversary of the RIKEN, the original campus of which was located at Komagome, Bunkyo-ward in Tokyo. There Dr. Yoshio Nishina “the father of Japanese modern physics” initiated “Japanese accelerator-based science” in 1930’s and led to the world top level. But after the defeat, its level had been behind America and Europe. Through the long-time struggles, Japan successfully has caught up them, and now is again on the top level. In this article, I describe briefly a history of RIKEN’s ion accelerators, and looked back over the construction of the RI Beam Factory (RIBF) unparalleled in RI beam production capability, which we proposed and led.