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  On March 11th, 2019, Phase 3 operation of the SuperKEKB/Belle II project began successfully, marking a major milestone in the development of Japan’s leading particle collider. This phase will be the physics run of the project, in which the Belle II experiment will start taking data with a fully instrumented detector. The KEKB accelerator, operated from 1999 to 2010, currently holds the world record luminosity for an electron-positron collider. SuperKEKB, its successor, plans to reach a luminosity 40 times …


Particle physicists at Nagoya University were very excited watching the memorial event of the new international experimental project, the Belle II experiment using the SuperKEKB electron-positron collider at the KEK laboratory in Japan. On April 26 at 0:38 JST, 2018, the electron and position beams collided each other for the first time, and the particle reaction made by the collision was recorded by the Belle II particle detector. This is one of the greatest milestones of the project. The excitement …