Riccardo de Sangro

30 October 2017

Abstract: After the first turn-on that occurred at the beginning of 2016, followed by a five-month single beam operation phase, the new SuperKEKB \bfact is presently under commissioning at the KEK laboratory in Japan. The new collider construction is now completed and it is scheduled to deliver the first $e^+e^-$ collisions in the first half of 2018, opening a new era in the arena of physics at the high intensity frontier. We present in this paper the preliminary results of the first single beam commissioning and describe the Belle II detector upgrade. We will then describe the performance improvements obtained, and present the status of the final phases of the detector assembly and commissioning.

Keyword(s): Belle II ; SuperKEKB ; CP violation ; BEAST II