SMuK 2023 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 23: Gas-Detectors / Muon MDT

T 23.2: Vortrag

Montag, 20. März 2023, 16:45–17:00, WIL/C207

Study of the muon detection efficiency of thin-gap RPCs — •Nayana Bangaru, Oliver Kortner, Hubert Kroha, and Timur Turkovic — MPI für Physik, München, Deutschland

Resistive plate chambers (RPC) with small gaps between electrodes of high-pressure phenolic laminate offer excellent time resolution of better than 500 ps and cm position resolution . Thin-gap RPCs with a gas gap of 1 mm will be used for the phase II upgrade of the ATLAS muon spectrometer. The muon hit positions will computed from he signals induced on 30 mm wide pick-up strips. In order to obtain a muon detection efficiency >99%, very sensitvie amplifiers have to be used. We studied the dependence of the muon detection efficiency of thin-gap RPCs on the applied operating voltage with two different amplifier options: the ATLAS thin-gap RPCs and an alternative circuit using commercial high-performance transimpedance amplifiers from Texas Instruments. In this contribution we will introduce the two amplifiers and present the results of our efficiency measurements