Mainz 2022 – scientific programme
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HK: Fachverband Physik der Hadronen und Kerne
HK 28: Computing I
HK 28.1: Group Report
Tuesday, March 29, 2022, 16:00–16:30, HK-H5
Track Finding with PANDA — •Anna Alicke1, Tobias Stockmanns1, and James Ritman2,1,3 for the PANDA collaboration — 1Forschungszentrum Jülich, Institut für Kernphysik — 2GSI Helmholtzzentrum für Schwerionenforschung — 3Ruhr-Universität Bochum, Experimentalphysik, Lehrstuhl I
An overview of the various track finding methods for the barrel part of the PANDA detector will be presented. PANDA's barrel tracking system consists of three detector parts. The innermost tracking detector is the Micro-Vertex-Detector (MVD). Surrounding the MVD is the the Straw Tube Tracker (STT), which consists of over 4200 drift tubes. Additionally, forward boosted tracks are identified by the Gas Electron Multiplier plates (GEM). The STT tubes produce coarse track information given by their tube ID and a drift time information which significantly improves the spatial resolution. The drift time information determines circles (isochrones) to which the tracks must pass tangentially.
Track finding is divided into two parts: track finding for primary particles and for secondary particles. Two algorithms for each part are presented and compared. The two algorithms for primary particles are global tracking algorithms. The first algorithm is the current default track finder in PANDA and is based on adding hits to existing track assumptions. The second one is a track finder based on Hough transformations. For secondary particles a well optimized track finder based on a cellular automaton is compared to a novel approach that uses three chosen hits to find the true particle track.