Intro; Supervisor's Foreword; Acknowledgements; Contents; 1 Introduction; 1.1 General Introduction into Belle II and This Work; References; 2 Experimental Setup; 2.1 From Accelerated Electrons to Final State Particles; 2.1.1 Accelerator Complex at KEK; 2.1.2 Detector Design; 2.1.3 Beam-Induced Background; 2.2 From Digital Detector Data via the Trigger to the Storage Drives; 2.2.1 Detector Readout and Hardware Trigger; 2.2.2 Online Software Trigger; 2.2.3 Storage and Offline Reconstruction; 2.3 Belle Analysis Software Framework 2; 2.3.1 Inter-Module, Inter-Process and Inter-Node Communication

6 Combinatorial Kalman Filter6.1 Motivation; 6.2 Principles; 6.3 Application of the CKF at Belle II; 6.4 CKF from CDC to SVD-An Example; 6.4.1 Build Relations; 6.4.2 Tree Search; 6.4.3 Filters; 6.4.4 Final Candidate Selection; 6.5 CKF for SVD Hit Attachment; 6.5.1 Characteristics of CDC Tracks; 6.5.2 Legacy Implementation; 6.5.3 Performance; 6.5.4 Additional Runs of the CKF and VXD Track Finding; 6.6 Merging of CDC and SVD Tracks; 6.6.1 Overall Performance of the SVD CKF Tracking Chain; 6.6.2 Comparison with VXDTF2; 6.6.3 Performance on ROI Finding; 6.7 CKF for PXD Hit Attachment