SMuK 2023 – scientific programme

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T: Fachverband Teilchenphysik

T 150: Gas-Detecors, Pixel/TANGERINE

T 150.1: Talk

Thursday, March 23, 2023, 17:30–17:45, WIL/C207

Cosmic test stand gas studies with a small-strip Thin Gap Chamber quadruplet — •Ksenia Solovieva, Jose Antonio Fernandez Pretel, Patrick Scholer, Vladislavs Plesanovs, and Ulrich Landgraf — Albert-Ludwigs University, Freiburg

The small-strip Thin Gap Chamber (sTGC) technology has been implemented in the New Small Wheel upgrade of ATLAS for improved triggering and tracking in a higher particle rate environment. For the purpose of investigating readout, trigger and gas parameters, a quadruplet was set up in a cosmic muon test stand in Freiburg and read out with the final ATLAS NSW readout system and the final gas mixture. With the unique opportunity of this setup to study analog signals before digitisation and to closely monitor various properties of the gas and HV, it lends itself to studies of the properties of the sTGC gas mixture. This presentation discusses the goals and challenges of the dedicated setup, as well as presenting the results of investigations into the behaviour of signals with varying gas mixtures. Some technical details of the mixing procedure to obtain the gas mixture (45:55 n-pentane: CO2) will be included as part of the results.