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T: Fachverband Teilchenphysik
T 59: Spurdetektoren und Spurrekonstruktion
T 59.8: Vortrag
Dienstag, 28. Februar 2012, 18:30–18:45, VG 2.102
Recent advances in the GENFIT track fitting package — •Karl A. Bicker2, Christian Höppner1, Bernhard Ketzer1, Sebastian Neubert1, Stephan Paul1, and Johannes Rauch1 — 1Technische Universität München, Munich, Germany — 2CERN, Geneva, Switzerland
The GENFIT software package [1] provides a framework for track fitting. Due to the modular and generic structure, it is usable with arbitrary detector and field geometries. GENFIT is used in several collaborations (e.g. Belle II, COMPASS, FOPI, PANDA).
GENFIT provides hit classes for common detector types and their information is used by GENFIT in their native coordinate system. Hits are collected in tracks, as are track representations. The track representation handles the extrapolation of the track through matter and fields. Multiple track representations can be fitted simultaneously.
GENFIT has recently been equipped with several new features. Besides adding Smoothing, the standard Kalman fit algorithm has been extended by a Deterministic Annealing Filter (DAF) [2], which can tag noise hits. An interface to the RAVE vertexing package [3] has equipped GENFIT with the capability for vertex reconstruction and fitting.
Results from simulation and real data will be presented.
This work is supported by the BMBF and the DFG Cluster of Excellence "Universe" (Exc153).
[1] C. Höppner et al., Nucl. Instr. Meth. A, 620 518-525 (2010)
[2] R. Fruehwirth et al., Comput. Phys. Commun., 120 197-214 (1999)
[3] W. Waltenberger, IEEE Trans. Nucl. Sci., 58 434-444 (2011)