PoS - Proceedings of Science
Volume 390 - 40th International Conference on High Energy physics (ICHEP2020) - Posters: Operation, Performance and Upgrade of Present Detectors
Production and test of Micromegas boards for the ATLAS New Small Wheel project
L. Longo
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The muon system of the ATLAS Experiment will be upgraded at the end of the 2019--2021 LHC shutdown with Micromegas detectors covering an active area of about 1280 m$^{2}$, being the largest system based on Micro Pattern Gaseous Detector (MPGD) ever built so far. The key element of the detectors are the anode boards which carry the readout strips, the resistive protection layer and the insulating pillars supporting the mesh. In total 32 different types of boards, for 136 modules, with size up to 40x220 cm$^{2}$ have been produced. The boards are produced by two companies in Europe, which opened the road to MPGD mass production, with the production now finished. The boards undergo a detailed quality control and quality assurance checks at CERN, prior to being mounted into the final detectors. In this work the technological transfer effort made by CERN and ATLAS to make the Micromegas board production an industrial process is described.
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