g4simulation/g4decayer/G4EvtGenDecayer.hh

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0027 // $Id: G4EvtGenDecayer.hh,v 1.2 2014/10/07 03:06:54 mccumber Exp $
0028 //
0029 /// \file eventgenerator/pythia/decayer6/include/G4EvtGenDecayer.hh
0030 /// \brief Definition of the G4EvtGenDecayer class
0031 //
0032 #ifndef G4_EVTGEN_DECAYER_H
0033 #define G4_EVTGEN_DECAYER_H
0034
0035 #include <EvtGenExternal/EvtExternalGenList.hh>
0036
0037 #include <HepMC3/Attribute.h>  // for string
0038
0039 #include <Geant4/G4LorentzVector.hh>
0040 #include <Geant4/G4Types.hh>  // for G4int, G4bool
0041 #include <Geant4/G4VExtDecayer.hh>
0042
0043 #include <cstddef>
0044 #include <list>    // for list
0045 #include <string>  // for string, allocator
0046
0047 class G4DecayProducts;
0048 class G4ParticleDefinition;
0049 class G4Track;
0050
0051 class EvtRandomEngine;
0052 class EvtAbsRadCorr;
0053 class EvtDecayBase;
0054 class EvtGen;
0055
0056 ///
0057 /// Implements the G4VExtDecayer abstract class using the Pythia6 interface.
0058 /// According to TPythia6Decayer class in Root:
0059 /// http://root.cern.ch/
0060 /// see http://root.cern.ch/root/License.html
0061
0062 class G4EvtGenDecayer : public G4VExtDecayer
0063 {
0064  public:
0065   G4EvtGenDecayer();
0066
0067   virtual ~G4EvtGenDecayer();
0068   virtual G4DecayProducts* ImportDecayProducts(const G4Track& track);
0069   void SetVerboseLevel(G4int verboseLevel) { fVerboseLevel = verboseLevel; }
0070
0071   //  void PHEvtGenDecayer();
0072   //    virtual void ~PHEvtGenDecayer();
0073   // void Decay(int pdgId, std::unique_ptr<G4LorentzVector> p);
0074   //  int ImportParticles(std::vector<int>& DecayPDGID, std::vector<int>& DecayStatus, std::vector<G4LorentzVector>& DecayMom, std::vector<G4LorentzVector>& DecayVtx);
0075   void SetVertex(G4LorentzVector* r);
0076   void SetDecayTable(const std::string& decayTable, bool useXml);
0077   // void ClearEvent();
0078   // void AppendParticle(int pdg, std::unique_ptr<G4LorentzVector> _p);
0079
0080  private:
0081   /// Not implemented
0082   G4EvtGenDecayer(const G4EvtGenDecayer& right);
0083   /// Not implemented
0084   G4EvtGenDecayer& operator=(const G4EvtGenDecayer& right);
0085   // G4EvtGenDecayer* myEvtGenDecayer = NULL;
0086   // EvtGen* myGenerator;
0087
0088   G4ParticleDefinition*
0089   GetParticleDefinition(int ParPDGID) const;
0090
0091   //  bool IsG4Detectable(int ParPDGID, G4bool warn = true) const;
0092
0093   std::string Decay_DEC = "InputDECAYFiles/DECAY.DEC";
0094   std::string Evt_pdl = "InputDECAYFiles/evt.pdl";
0095
0096   EvtGen* mEvtGen = NULL;
0097   EvtRandomEngine* mEvtGenRandomEngine = NULL;
0098   EvtExternalGenList genList;
0099
0100   //  EvtParticle* mParticle;
0101   EvtAbsRadCorr* radCorrEngine = NULL;
0102   std::list<EvtDecayBase*> extraModels;
0103
0104   //! WidthThreshold on the particle mass width in keV for defining a stable particle in the decay process
0105   //! Particles with mass width below the WidthThreshold will be considered stable, and be passed to Geant4 as the final state of a decay vertex
0106   //! Particles with mass width above the WidthThreshold will be considered unstable, and be decayed in EvtGen at the same vertex as its parent.
0107   //! Default value is 5 MeV so that the phi meson with a width of 4.9 MeV is decayed in Geant4
0108   float WidthThreshold = 5000.0;  //
0109
0110   //    TLorentzVector * mVertex = new TLorentzVector;
0111   //  bool mOwner;
0112   //  bool mDebug = false;
0113
0114   // EvtVector4R* mVertex;
0115
0116   G4int fVerboseLevel;  ///< verbose level
0117                         //  ParticleVector*  fDecayProductsArray ; ///< array of decay products
0118                         //  TLorentzVector FourMom;
0119 };
0120
0121 // ----------------------------------------------------------------------------
0122
0123 #endif