München 2019 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 54: Poster

HK 54.65: Poster

Donnerstag, 21. März 2019, 16:30–19:00, Foyer Theresanium

A test stand for the characterization of a GEM-TPC with cosmic muons — •Wael alkakhi, dimitri schaab, jonathan ottnad, markus ball, philipp bielefeldt, and bernhard ketzer for the CBELSA/TAPS collaboration — Helmholtz-Institut für Strahlen und Kernphysik, Bonn, Germany

We are setting up a cosmic-ray triggering and tracking telescope for the characterization of a compact GEM(Gas Electron Multiplier)-TPC (Time Projection Chamber).Such a GEM-TPC is currently being developed for a future upgrade of the CBELSA/TAPS experiment at the ELSA facility in Bonn.The setup consists of a trigger hodoscope made up of two planes of four scintillator panels, each read out on both sides by photomultiplier tubes, and four 10× 10 cm2 GEM detectors with 2D strip readout on a movable platform.Applying a programmable trigger matrix to the hodoscopes signals,we make a coarse selection of cosmic tracks through the TPC. The GEM detectors deliver two space points on each side of the TPC and thus provide an precise external track reference for TPC resolution studies. The poster will describe the setup, the characterization of the trigger hodoscope, and the characterization of the GEM detectors, and the readout of the GEM detectors.

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