000000291 001__ 291
000000291 005__ 20160805033905.0
000000291 037__ $$aBELLE2-TALK-CONF-2015-022
000000291 041__ $$aeng
000000291 100__ $$aTobias Schlüter
000000291 245__ $$aTrack Fitting in Belle II The Genfit Library and its Performance
000000291 260__ $$aEPS HEP 2015$$c2015-07-25
000000291 300__ $$amult. p
000000291 520__ $$aWe discuss track fitting as implemented in the Belle II experiment currently under construction at KEK in Tsukuba, Japan. Track fitting sits at the interface of physics analysis and detector data, is essential to the tasks of detector calibration and alignment, and it also is an integral part of Belle II's high-level trigger. To address the variety of tasks, the track-fitting software, initially based on the GENFIT library, underwent significant redesign. The revised version aims at being experiment-independent and is now the default track-fitting software in the Belle II and PANDA experiments. It implements a variety of track-fitting algorithms, provides a data storage model which allows storage at differnet levels of detail and provides high-level operations on tracks such as combinations of tracks from different subdetectors, it provides visualization, and supports all commonly employed types of tracking detectors. It provides a Runge-Kutta type track extrapolation code with handling of energy loss and multiple scattering. It interfaces to the commonly used Millipede II software for detector calibration and alignment, and to the experiment-independent vertexing library RAVE. Our contribution will discuss design choices and the performance of the software in its different roles at the Belle II experiment.
000000291 8560_ $$ftobias.schlueter@physik.uni-muenchen.de
000000291 8564_ $$uhttps://docs.belle2.org/record/291/files/BELLE2-TALK-CONF-2015-022.pdf