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

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.

199 pages, 152 figures

References in corpus (8)

• An Introduction to PYTHIA 8.2
• Performance of the diamond-based beam-loss monitor system of Belle II
• The ONSEN Data Reduction System for the Belle II Pixel Detector
• Measurements of Beam Backgrounds in SuperKEKB Phase 2
• sBelle Design Study Report
• Measurement of the cluster position resolution of the Belle II Silicon Vertex Detector
• Online Data Reduction for the Belle II Experiment using DATCON
• Calibration and alignment of the Belle II tracker

Cited by in corpus (16)

• Measurement of the integrated luminosity of data samples collected during 2019-2022 by the Belle II experiment
• New graph-neural-network flavor tagger for Belle II and measurement of $\sin 2{\varphi }_1$ in $B^0\to J/\psi K_{\text{S}}^0$ decays
• Measurement of the $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}{\pi }^0$ cross section in the energy range 0.62-3.50 GeV at Belle II
• Measurement of $CP$ violation in $B^0\to K_S^0{\pi }^0$ decays at Belle II
• Precise measurement of the $D_s^{+}$ lifetime at Belle II
• Silicon Vertex Detector of the Belle II Experiment
• Measurement of $B^{+}\to {\tau }^{+}{\nu }_{\tau }$ branching fraction with a hadronic tagging method at Belle II
• Observation of the decay $B^0\to J/\psi \omega$ at Belle II
• Observation of time-dependent $CP$ violation and measurement of the branching fraction of $B^0\to J/\psi {\pi }^0$ decays
• Measurement of $CP$ asymmetries in $B^0\to K_S^0{\pi }^0\gamma$ decays at Belle II
• First measurements of the branching fractions for the decay modes ${\Xi }_c^0\to \Lambda \eta$ and ${\Xi }_c^0\to \Lambda {\eta }^{\prime }$ and search for the decay ${\Xi }_c^0\to \Lambda {\pi }^0$ using Belle and Belle II data
• Measurement of $CP$ asymmetries in $B^0\to \varphi K_S^0$ decays with Belle II
• Measurement of the $CP$ asymmetry in $D^0\to {\pi }^{+}{\pi }^{-}{\pi }^0$ decays at Belle II
• Study of $B^{+}\to {\mu }^{+}{\nu }_{\mu }$ decays at Belle and Belle II
• Measurement of the branching fraction, polarization, and time-dependent $CP$ asymmetry in $B^0\to {\rho }^{+}{\rho }^{-}$ decays and constraint on the CKM angle ${\varphi }_2$
• Study of $e^{+}{e}^{-}\to h^{+}{h}^{-}J/\psi (h=\pi ,K,p)$ via initial-state radiation at Belle~II