ATLAS New Small Wheel sTGC Pad Efficiency and Signal Strength
Date
2022-12-19
Authors
Brown, Leesa
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Abstract
The New Small Wheel (NSW) is the latest major upgrade of the ATLAS Muon
Spectrometer and was installed during LHC Long Shutdown 2 between Runs 2 and
3. The NSW replaced the previous Small Wheels in the inner end-cap region and
is composed of two technologies: MicroMegas and small-Strip Thin Gap Chambers
(sTGC). The detector layers of the sTGC consist of wires centred between two cathode
planes. One cathode plane is segmented into thin strips of constant width and the
other into larger pads with variable sizes. From preliminary stand-alone tests and
test beam results, the pads of the sTGC provide a coarse, fast trigger for the NSW
and are able to distinguish muon signals in high-background environments.
Description
Keywords
ATLAS, New Small Wheel, small-strip Thin Gap Chambers