Beam Performance of Tracking Detectors with Industrially Produced GEM Foils
Frank Simon, James Kelsey, Michael Kohl, Richard Majka, Miro Plesko,, Tai Sakuma, Nikolai Smirnov, Harold Spinka, Bernd Surrow, David Underwood
TL;DR
This study evaluates the performance of GEM-based tracking detectors with industrially produced foils, demonstrating high efficiency and spatial resolution, and analyzing the effects of particle incidence angles.
Contribution
First comprehensive performance assessment of GEM detectors with industrial foils, including efficiency, spatial resolution, and angular dependence analysis.
Findings
Efficiency exceeds 95%
Spatial resolution better than 70 micrometers
Performance influenced by particle incidence angle
Abstract
Three Gas-Electron-Multiplier tracking detectors with an active area of 10 cm x 10 cm and a two-dimensional, laser-etched orthogonal strip readout have been tested extensively in particle beams at the Meson Test Beam Facility at Fermilab. These detectors used GEM foils produced by Tech-Etch, Inc. They showed an efficiency in excess of 95% and spatial resolution better than 70 um. The influence of the angle of incidence of particles on efficiency and spatial resolution was studied in detail.
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