The silicon vertex detector of the Belle II experiment

Abstract

The silicon vertex detector (SVD) for the Belle II experiment at the SuperKEKB accelerator in Japan is responsible for detecting particle�s origins. It comprises four cylindrical layers with ladder-like double-sided silicon detector (DSSD) arrays on each layer. The ladders produced under a stringent quality control showed good mechanical tolerance with a DSSD distortion <300 �m and with an electrical efficiency >99%. The SVD was commissioned with cosmic-ray events for two months. Cluster-finding efficiency was estimated in the commissioning to be >98.5%. The commissioned SVD had been installed on the Belle II detector. The so-called "phase 3" of the experiment with the SVD will start in March 2019. � Copyright owned by the author(s) under the terms of the Creative Commons.