Mainz 2022 – scientific programme
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HK: Fachverband Physik der Hadronen und Kerne
HK 42: Hadron Structure and Spectroscopy VII
HK 42.4: Talk
Wednesday, March 30, 2022, 15:00–15:15, HK-H8
The new Forward Tracker System for the HADES and PANDA Phase-0 experiment — •Gabriela Perez-Andrade1, James Ritman2,1, and Peter Wintz1 for the HADES collaboration — 1Forschungszentrum Jülich — 2Helmholtzzentrum für Schwerionenforschung
HADES is a fixed-target experiment where proton, pion, and heavy-ion induced reactions are used to study nuclear matter and the properties of baryonic resonances. HADES is in operation at the SIS18 in GSI, Darmstadt, and is part of the phase-0 program of the future FAIR facility. The new Straw Tracking Stations (STS1/2) installed at HADES were built in collaboration with the PANDA experiment. The STS1/2 enlarge the HADES acceptance for hyperon reconstruction in p+p reactions. Each station has four double layers of gas-filled straws. The straw design is based on the PANDA central and forward straw trackers (STT, FT). Four azimuthal orientations of the double layers are used for 3D track reconstruction, and to resolve ambiguities in multi-track events. From pre-commissioning tests, a spatial resolution of 0.13 mm for MIPs was determined. The system was installed at GSI at the end of 2020, and a dedicated commissioning beamtime in February 2021 with proton beams impinging on an LH2 target showed a stable STS operation. The collected data are used to develop the calibration and track reconstruction methods in the experiment analysis software HYDRA. A description of the STS system and a summary of the results from the beamtime will be presented.