Köln 2025 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 20: Instrumentation V
HK 20.3: Vortrag
Dienstag, 11. März 2025, 16:15–16:30, SR Exp1A Chemie
Status of the GEM production and quality assurance at the FTD — •Tim Schüttler1,2, Markus Ball1,2, Yevgen Bilevych2, Philip Hauer1,2, Shania Müller1, Dmitri Schaab2, and Bernhard Ketzer1,2 — 1Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn — 2Forschungs- und Technologiezentrum Detektorphysik, Universität Bonn
Gas Electron Multipliers (GEMs) play a crucial role as amplification stages in modern gaseous detectors, offering high spatial and temporal resolution at moderate cost, even at large sizes and high particle rates. At the newly established Research and Technology Center Detector Physics (FTD) in Bonn, we have successfully implemented a reliable process for producing standard 10 × 10 cm2 GEM foils that was developed in close collaboration with CERN’s MPT workshop, which traditionally acts as the main supplier of GEM foils to the community. This achievement represents an important step forward, providing enhanced flexibility for research and development.
The production process at the FTD employs a double-mask photolithographic technique, and makes use of a wide variety of equipment such as wet benches, a dry-film laminator, and UV exposition systems. Through iterative improvements, each production step has been refined to ensure high-quality results consistently. This talk will detail the production and quality assurance workflow, highlight key innovations, showcase measurement results confirming the reliability of the foils, and outline plans for exploring novel GEM parameters and geometries. Supported by BMBF.
Keywords: GEM; MPGD; Gaseous Detector; Photolithography