The Design, Construction, Operation and Performance of the Belle II Silicon Vertex Detector

TL;DR

The paper details the design, construction, and operation of the Belle II Silicon Vertex Detector, highlighting its high efficiency, low defect rate, and importance for physics research, serving as a comprehensive resource for detector development.

Contribution

It provides an extensive documentation of the Belle II SVD's design, construction, and operational achievements, aiding future high-quality detector system development.

Findings

High hit-finding efficiency (>99%)

Low defective channels (<1%)

Excellent signal-to-noise ratio

Abstract

The Silicon Vertex Detector of Belle II is a state-of-the-art tracking and vertexing system based on double-sided silicon strip sensors, designed and fabricated by a large international collaboration in the period 2012--2018. Since 2019 it has been in operation providing high quality data with a small number of defective channels (<1%), a large hit-finding efficiency (>99%), a good signal-to-noise ratio (well in excess of 10 for all sensor configurations and tracks). Together with the good control over the alignment, these are all essential factors to achieve good tracking reconstruction and physics performance. In this extended paper we try to document all the aspects of the SVD challenges and achievements, in the spirit of providing information to the broader community and help the development of high quality detector systems, which are fundamental tools to carry out physics research.