Speaker
Description
The recently approved HL-LHC project and the future colliders proposals present a challenging experimental scenario, dominated by high pileup, radiation background and a bunch crossing time possibly shorter than 5 ns. This holds as well for muon systems, where RPCs can play a fundamental role in the design of the future experiments. The RPCs, thanks to their high space-time granularity, allows a sparse representation of the particle hits, in a very large parametric space containing, in addition to 3D spatial localization, also the pulse time and width associated to the avalanche charge. This 5D representation of the hits would increase the discovery potential of the experiment by allowing a better track pileup rejection and sharper momentum resolution, an effective measurement of the particle velocity, to tag and trigger the non-ultrarelativistic particles, and the detection of local multiple tracks in close proximity without ambiguities. Moreover, due to the fast response, typically for RPCs of the order of a few ns, this information can be provided promptly to the LVL0 trigger. In this talk, we will discuss the detector performance and the impact on physics of the Phase-1 and Phase-2 upgrades of the ATLAS RPC system. The design of these upgrades is already compatible with the 5D tracking concept, by implementing the latest generation of large area RPC technology and front-end electronics.
