Speaker
Description
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. By utilizing a $50\,\mu\mathrm{m}$ thin polyimide foil, cladded on both sides with $5\,\mu\mathrm{m}$ of copper and patterned with a large number of microscopic holes, GEMs allow for charge multiplication within a gas volume under high electric fields.
At the newly established Research and Technology Center Detector Physics (FTD) in Bonn, we have successfully implemented a reliable process for producing standard $10\times10\,\mathrm{cm}^2$ 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 our plans for exploring novel GEM parameters, materials and geometries as well as other MPGD technologies. Supported by BMFTR.
| Name of the speaker | Tim Schüttler |
|---|---|
| Eligible for the Georges Charpak Young Scientist Award. | yes |