Paolo Branchini

31 August 2018

Abstract: The Belle II experiment is a substantial upgrade of the Belle detector and will operate at the SuperKEKB energy-asymmetric e+e􀀀 collider. The accelerator has already successfully completed the first phase of commissioning in 2016. First electron positron collisions in Belle II have been delivered in April 2018. The design luminosity of SuperKEKB is 8x1035cm􀀀2 s􀀀1 and the Belle II experiment aims to record 50 ab􀀀1 of data, a factor of 50 more than the Belle experiment. This large data set will be accumulated with low backgrounds and high trigger eciencies in a clean e+e􀀀 environment. This contribution will review the detector upgrade, the achieved detector performance and the plans for the commissioning of Belle II.