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T: Fachverband Teilchenphysik

T 38: Gasgefüllte Detektoren II

T 38.1: Vortrag

Dienstag, 20. März 2018, 16:30–16:45, Z6 - SR 2.002

Characteristics of a Diamond like Carbon Coated (DLC) Gas Electron Multiplier (GEM) — •Amirrafiq Alfarra, Serhat Atay, Ivor Fleck, and Ulrich Werthenbach — University of Siegen, Siegen, Germany

Abstract

We are investigating in this work the characteristics of a diamond like carbon coated (DLC) gas electron multiplier (GEM). Both electrodes of this GEM were covered by a layer of diamond like carbon. The purpose of this coating is to reduce the probability of discharge and thus allowing us to increase the GEM voltage to reach higer gain. The DLC GEM is being operated in an Ar and CO2 gas mixture.The gain is being studied using x-ray radiation of Fe55 source at variate voltage and for different drift distances. Measurements are being taken using a pad readout system and compared with the results of CERN GEMs.