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T: Fachverband Teilchenphysik

T 11: Gaseous Detectors

T 11.3: Talk

Monday, March 21, 2022, 16:45–17:00, T-H24

Particle position reconstruction using a segmented GEM foil in a micro-structured gaseous detector — •Christoph Jagfeld, Otmar Biebel, Stefanie Götz, Vitalii Havrylenko, Ralf Hertenberger, Katrin Penski, Maximilian Rinnagel, Chrysostomos Valderanis, and Fabian Vogel — LMU, München

In Micromegas (Micro-MEsh GAseous Structures) detectors, a modern form of micro-pattern gaseous detectors, the signal is usually read out via readout strips on the anode. The signal created at the mesh is usually neglected for the particle position reconstruction. By replacing the mesh with a GEM (Gas Electron Multiplier) foil, which is segmented into 0.5 mm wide readout strips on one side, the particle position can be determined from the GEM foil signal as well. If the strips on the GEM foil are orientated perpendicular to the anode readout strips, a particle position can be reconstructed in two spatial coordinates without adding a second layer of readout strips on the anode. CERN test beam measurement results are presented. These show a good good particle reconstruction efficiency, spatial and angular resolution of this GEM-Micromegas concept.