Speaker
Mr
Henning Keller
(III. Phys. Inst. A, RWTH Aachen University)
Description
The Gas Electron Multiplier (GEM) technology is very popular among the high-energy physics community due to its excellent performance, even in high-rate environments; other striking features are strong resistance to aging as well as a flexible design. The core of the detector consists of thin foils with an etched pattern of holes. The detection principle relies on electron multiplication inside the holes, where a high electric field is apparent. New etching techniques have been used for the production of large-size (0.3 m$^2$ - 0.4 m$^2$) GEM foils needed for high-energy physics experiments. The new techniques result in different hole geometries. To better understand the gas gain dependance on the hole geometry, several measurements have been performed, and have been complemented by GARFIELD++ simulations. The results are compared with other recent studies.
Primary author
Mr
Henning Keller
(III. Phys. Inst. A, RWTH Aachen University)
