For a high-luminosity upgrade of the Large Hadron Collider (Super-LHC),
trigger and tracking chambers in the forward regions of the ATLAS
muon spectrometer will have to be partially replaced by detectors with 10-50 times
higher rate capability. Combination of high time and spatial resolution
of about 1 ns and 100 micron, respectively, is desirable. Active areas on
the order of 100 m^2 or more have to be covered. The development of
large-area ThickGEM detectors offers a potentially cost effective solution.