Der ATLAS-Detektor

The ATLAS detector has been designed to exploit the full physics potential of the LHC. This includes the search for the origin of mass, searchesfor heavy W- and Z-like objects, supersymmetric particles, for compositness of the fundamental fermions as well as the investigation of CP violation in B-decays and detailed studies of the top quark.

The ability to cope well with a broad variety of possible physics processes is expected to maximize the detector’s potential for the discovery of new, unexpected physics. A lot of different benchmark processes were used in formulating the basicprinciples of the detector. These can be summarized as following:

• Very good electromagnetic calorimetry for electron and photon identificationand measurements, complemented by hermetic jet and missing transverse energy calorimetry.
• Efficient tracking at high luminosity for lepton momentum measurements, b-quark tagging, enhanced electron and photon identification, as well as tau and heavy-flavor vertexing and reconstruction capability of some B decay final states at lower luminosity.
• Stand-alone, precision, muon-momentum measurements up to highest luminosity and very low-pT trigger capability at lower luminosity.