Par02/include/Par02FastSimModelTracker.hh

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0026 /// \file Par02FastSimModelTracker.hh
0027 /// \brief Definition of the Par02FastSimModelTracker class
0028
0029 #ifndef PAR02_TRACKER_FAST_SIM_MODEL_H
0030 #define PAR02_TRACKER_FAST_SIM_MODEL_H
0031
0032 #include "Par02DetectorParametrisation.hh"
0033
0034 #include "G4Navigator.hh"
0035 #include "G4Step.hh"
0036 #include "G4VFastSimulationModel.hh"
0037
0038 /// Shortcut to the ordinary tracking for tracking detectors.
0039 ///
0040 /// The fast simulation model describes what should be done instead of a
0041 /// normal tracking. Instead of the ordinary tracking, a particle momentum
0042 /// at the entrance of the tracking detector is smeared
0043 /// (by Par02Smearer::SmearMomentum()) and the particle is placed at the
0044 /// tracking detector exit, at the place it would reach without the change
0045 /// of its momentum. Based on G4
0046 /// examples/extended/parametrisations/Par01/include/Par01EMShowerModel.hh .
0047 /// @author Anna Zaborowska
0048
0049 class Par02FastSimModelTracker : public G4VFastSimulationModel
0050 {
0051   public:
0052     /// A constructor.
0053     /// @param aModelName A name of the fast simulation model.
0054     /// @param aEnvelope A region where the model can take over the ordinary tracking.
0055     /// @param aParamType A parametrisation type.
0056     Par02FastSimModelTracker(G4String aModelName, G4Region* aEnvelope,
0057                              Par02DetectorParametrisation::Parametrisation aParamType);
0058
0059     /// A constructor.
0060     /// @param aModelName A name of the fast simulation model.
0061     /// @param aEnvelope A region where the model can take over the ordinary tracking.
0062     Par02FastSimModelTracker(G4String aModelName, G4Region* aEnvelope);
0063
0064     /// A constructor.
0065     /// @param aModelName A name of the fast simulation model.
0066     Par02FastSimModelTracker(G4String aModelName);
0067
0068     ~Par02FastSimModelTracker();
0069
0070     /// Checks if this model should be applied to this particle type.
0071     /// @param aParticle A particle definition (type).
0072     virtual G4bool IsApplicable(const G4ParticleDefinition& aParticle);
0073
0074     /// Checks if the model should be applied taking into account the kinematics
0075     /// of a track.
0076     /// @param aFastTrack A track.
0077     virtual G4bool ModelTrigger(const G4FastTrack& aFastTrack);
0078
0079     /// Calculates the final position (at the outer boundary of the tracking detector)
0080     /// of a particle with the momentum at the entrance of the tracking detector.
0081     /// Smears the particle momentum and saves it, together with the tracking detector
0082     /// resolution and efficiency to the Par02PrimaryParticleInformation.
0083     /// @param aFastTrack A track.
0084     /// @param aFastStep A step.
0085     virtual void DoIt(const G4FastTrack& aFastTrack, G4FastStep& aFastStep);
0086
0087   private:
0088     /// A pointer to Par02DetectorParametrisation used to get the efficiency and
0089     /// resolution of the tracking detector for a given particle and
0090     /// parametrisation type.
0091     Par02DetectorParametrisation* fCalculateParametrisation;
0092
0093     /// A parametrisation type.
0094     Par02DetectorParametrisation::Parametrisation fParametrisation;
0095 };
0096
0097 #endif