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0001 # Fast track simulation extension for the Acts project
0002
0003 This project provides the code to run a fast track simulation on top of
0004 `ActsCore`. The fast track simulation (Fatras) uses the actor plug-in
0005 mechanism of the `Acts::Propagator` and its predictive navigation through
0006 the `Acts::TrackingGeometry` to simulate particle trajectories through the
0007 tracking detector.
0008
0009
0010 As a fast track simulation, it uses the reconstruction geometry description,
0011 i.e. the `Acts::TrackingGeometry` as a simulation geometry with simplified and
0012 particle parameterised material effects:
0013 * Multiple coulomb scattering is done by gaussian (mixture) approximations
0014 * Ionisation loss is calculated using the Bethe-Bloch formalism
0015 * Radiation loss follows Bethe-Heitler formalism
0016 * Limited nuclear interaction processes are parameterised from `Geant4`
0017
0018
0019 Dependencies for the Core components are:
0020 * `ActsCore` and consequently `Eigen` and `Boost`
0021
0022 Optional dependency exists for:
0023 * `Geant4` for optional functionality taken from the full simulation toolkit
0024
