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The experiments of the LHC will require extensive upgrades of their detectors and electronics readout systems in order to maximize their discovery potential when operating at higher luminosities. As part of this upgrade, CMS intends to install GEM detectors to complement the existing detectors of the Muon system. GEM detectors are a relatively new type of gaseous detectors that offer many performance characteristics suitable to operation during the high luminosity phase of the LHC. The readout electronics associated with these GEM detectors will be completely new offering optimized charge readout, fine granularity triggering and tracking and optical readout at high data bandwidths. This talk focuses on the design and development of the GEM electronics system, from the front-end ASIC “VFAT3” through to the interface with CMS.

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