The GEM Production at the FTD - Current Status and Future Plans

by Philip Hauer (Helmholtz-Institut für Strahlen- und Kernphysik)

Thursday Jul 10, 2025, 10:00 AM → 12:00 PM Europe/Berlin

Abstract: 

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 FTD, 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.

 

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