physics: Hideki Yukawa in 1949 and Shin'ichirō Tomonaga in 1965. The SPring-8 (Super Photon Ring 8GeV) facility in Harima is the world's largest and most powerful third-generation synchrotron radiation facility. In July 2004 a team at Riken created element 113 (now named nihonium, after Nihon = Japan). On April 2, 2005 the same team successfully created it for the second time, and a third event was seen in 2012. The discovery was officially recognized by the International Union of Pure and Applied Chemistry (IUPAC) and the International Union of Pure and Applied Physics (IUPAP) in December 2015. The Riken Super Combined Cluster is one of the world's fastest supercomputers. In January 2006, Riken set up the Next-Generation Supercomputer R&D Center, with the purpose of designing and building the fastest supercomputer in the world, and in June 2006, it announced the completion of a one-petaFLOPS computer system designed specially for molecular dynamics simulation. and despite it being still not finished, it topped the LINPACK benchmark with the performance of 8.162 petaFLOPS, or 8.162 quadrillion calculations per second, with a computing efficiency ratio of 93.0%, making it the fastest supercomputer in the world at the time. The complete project entered service in November 2012. List of presidents Dairoku Kikuchi (1917) Kōi Furuichi (1917–1921) Masatoshi Ōkōchi (1921–1946) Yoshio Nishina (1946–1951) Kiichi Sakatani (1951–1952) Takeshi Murayama (1952–1956) Masanori Satō (1956–1958) Haruo Nagaoka (1958–1966) Shirō Akahori (1966–1970) Toshio Hoshino (1970–1975) Shinji Fukui (1975–1980) Tatsuoki Miyajima (1980–1988) Minoru Oda (1988–1993) Akito Arima (1993–1998) Shunichi Kobayashi (1998–2003) Ryōji Noyori (2003 – 31 March 2015) Hiroshi Matsumoto (1 April 2015 – 31 March 2022) Makoto Gonokami (1 April 2022–present) Notable scientists and affiliated people Kotaro Honda, inventor of KS steel Kikunae Ikeda, discoverer of monosodium glutamate and the umami flavor Dairoku Kikuchi, mathematician and the first Director of Riken Seishi Kikuchi, physicist, known for his explanation of the Kikuchi lines Hiroaki Kitano systems biologist involved in RoboCup, AIBO etc. Chika Kuroda, chemist, known for research on natural dyes, and one of the first three women to receive a bachelor's degree in Japan Daniel Loss, physicist, known for proposing the Loss–DiVincenzo quantum computer Kōsuke Morita, physicist, leader of team that discovered element 113, now named nihonium after Japan Hantaro Nagaoka, postulator of the Saturnian model of the atom Ukichiro Nakaya, physicist and essayist Yoshio Nishina, leading atomic physicist who worked with Bohr, Einstein, Heisenberg and Dirac Ryōji Noyori, past