Status of SuperKEKB phase-2 commissioning

SuperKEKB is an asymmetric energy electron-positron collider for Belle II experiment. It is designed to achieve 40 times luminosity of the previous KEKB B-Factory accelerator by using the novel nano-beam'' collision scheme. The SuperKEKB accelerator commissioning is devided in 3 stages. The first stage so called phase-1 commissioning'' has been performed in 2016 for testing the accelerator system without the final focus system and for verifying the low emittance beam tuning. After installation of the final focus system and the Belle II detector, the second stage so called commissioning'' has started from 19th March 2018 to verify the nano-beam'' collision. We report the preliminary result of the phase-2 commissioning.