Bonn 2020 – scientific programme

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T: Fachverband Teilchenphysik

T 87: Gaseous detectors II

T 87.3: Talk

Thursday, April 2, 2020, 17:00–17:15, L-3.016

Noise related studies for large area Micromegas detectors — •Sebastian Trost, Otmar Biebel, Bernhad Flierl, Maximilian Herrmann, Ralf Hertenberger, Christoph Jagfeld, Felix Klitzner, Katrin Penski, Maximilian Rinnagel, Chrysostomos Valderanis, and Fabian Vogel — LMU München

As part of the New Small Wheel upgrade of the ATLAS detector at the LHC, high-rate-capable large-area Micromegas detectors are being constructed and investigated at LMU Munich. These four-layered Micromegas modules are designed for precision track reconstruction in the muon spectrometer. This talk presents the evaluation of cosmic muon tracking performance of the Micromegas detector under high fluxes of MeV neutron background at the MLL tandem accelerator at Garching. Moreover, the influence of small water vapor additions at the ppm level to the Ar:CO2 93:7 vol% detector gas are studied systematically for stability, pulse height and efficiency at the Cosmic Ray Facility in Garching.