Gabriele Cosmo
185 lines
7.3 KiB
C++
185 lines
7.3 KiB
C++
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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// G4AdjointPrimaryGeneratorAction
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//
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// Class description:
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//
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// This class represents the PrimaryGeneratorAction that is used during
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// the entire adjoint simulation.
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// It uses the class G4AdjointPrimaryGenerator to generate randomly
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// adjoint primary particles on a user selected adjoint source
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// (External surface of a volume or Sphere).
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// The spectrum of the primary adjoint particles is set as 1/E with
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// user defined max and min energy.
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// The weight of the primary is set according to ReverseMC theory as
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// w=log(Emax/Emin)*E*adjoint_source_area*pi/n, with E the energy of
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// the particle, n the number of adjoint primary particles of same type
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// that will be generated during the simulation.
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// Different types of adjoint particles are generated event after event
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// in order to cover all the type of primaries and secondaries needed
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// for the simulation. For example if reverse e- ionisation, brem,
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// photo electric effect, and compton are considered both adjoint gamma
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// and adjoint e- will be considered alternatively as adjoint primary.
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// The user can decide to consider/neglect some type of particle by
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// using the macro commands "/adjoint/ConsiderAsPrimary" and
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// "/adjoint/NeglectAsPrimary". If an adjoint primary or its secondary
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// has reached the external surface, in the next event a fwd primary
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// particle equivalent to the last generated adjoint primary is
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// generated with the same position, energy but opposite direction
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// and the forward tracking phase starts.
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// --------------------------------------------------------------------
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// Class Name: G4AdjointPrimaryGeneratorAction
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// Author: L. Desorgher, 2007-2009
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// Organisation: SpaceIT GmbH
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// Contract: ESA contract 21435/08/NL/AT
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// Customer: ESA/ESTEC
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// --------------------------------------------------------------------
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#ifndef G4AdjointPrimaryGeneratorAction_hh
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#define G4AdjointPrimaryGeneratorAction_hh 1
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#include <iterator>
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#include <map>
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#include <vector>
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#include "globals.hh"
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#include "G4ThreeVector.hh"
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#include "G4VUserPrimaryGeneratorAction.hh"
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class G4AdjointPosOnPhysVolGenerator;
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class G4ParticleGun;
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class G4Event;
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class G4AdjointPrimaryGenerator;
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class G4ParticleDefinition;
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// --------------------------------------------------------------------
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class G4AdjointPrimaryGeneratorAction : public G4VUserPrimaryGeneratorAction
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{
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public:
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G4AdjointPrimaryGeneratorAction();
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~G4AdjointPrimaryGeneratorAction();
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G4AdjointPrimaryGeneratorAction(
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const G4AdjointPrimaryGeneratorAction&) = delete;
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G4AdjointPrimaryGeneratorAction& operator=(
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const G4AdjointPrimaryGeneratorAction&) = delete;
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void GeneratePrimaries(G4Event*);
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void SetEmin(G4double val);
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void SetEmax(G4double val);
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void SetEminIon(G4double val);
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void SetEmaxIon(G4double val);
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void SetSphericalAdjointPrimarySource(G4double radius,
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G4ThreeVector pos);
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void SetAdjointPrimarySourceOnAnExtSurfaceOfAVolume(
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const G4String& volume_name);
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void ConsiderParticleAsPrimary(const G4String& particle_name);
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void NeglectParticleAsPrimary(const G4String& particle_name);
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void SetPrimaryIon(G4ParticleDefinition* adjointIon,
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G4ParticleDefinition* fwdIon);
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void UpdateListOfPrimaryParticles();
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inline void SetRndmFlag(const G4String& val)
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{
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rndmFlag = val;
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}
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inline size_t GetNbOfAdjointPrimaryTypes()
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{
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return ListOfPrimaryAdjParticles.size();
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}
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inline std::vector<G4ParticleDefinition*>* GetListOfPrimaryFwdParticles()
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{
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return &ListOfPrimaryFwdParticles;
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}
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inline const G4String& GetPrimaryIonName()
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{
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return ion_name;
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}
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inline void SetNbPrimaryFwdGammasPerEvent(G4int nb)
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{
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nb_fwd_gammas_per_event = nb;
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}
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inline void SetNbAdjointPrimaryGammasPerEvent(G4int nb)
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{
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nb_adj_primary_gammas_per_event = nb;
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}
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inline void SetNbAdjointPrimaryElectronsPerEvent(G4int nb)
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{
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nb_adj_primary_electrons_per_event = nb;
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}
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inline G4ParticleDefinition* GetLastGeneratedFwdPrimaryParticle()
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{
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return ListOfPrimaryFwdParticles[index_particle];
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}
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private: // methods
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G4double ComputeEnergyDistWeight(G4double energy, G4double E1, G4double E2);
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private: // attributes
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G4String rndmFlag; // flag for a rndm impact point
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// The generator of primary vertex except for weight
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G4AdjointPrimaryGenerator* theAdjointPrimaryGenerator = nullptr;
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// Emin and Emax energies of the adjoint source
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//---------------------------------------------
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G4double Emin = 0.0;
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G4double Emax = 0.0;
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G4double EminIon = 0.0;
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G4double EmaxIon = 0.0;
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// List of type of primary adjoint and forward particle used in the
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// simulation
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//------------------------------------------------------------------
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std::vector<G4ParticleDefinition*> ListOfPrimaryFwdParticles;
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std::vector<G4ParticleDefinition*> ListOfPrimaryAdjParticles;
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std::map<G4String, G4bool> PrimariesConsideredInAdjointSim;
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// if true considered if false not considered
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std::size_t index_particle = 100000;
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G4ThreeVector pos, direction, p;
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G4String type_of_adjoint_source; // Spherical ExtSurfaceOfAVolume
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G4double radius_spherical_source = 0.0;
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G4ThreeVector center_spherical_source;
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G4int nb_fwd_gammas_per_event = 1;
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G4int nb_adj_primary_gammas_per_event = 1;
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G4int nb_adj_primary_electrons_per_event = 1;
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// For simulation with ions
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//--------------------------
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G4ParticleDefinition* fwd_ion = nullptr;
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G4ParticleDefinition* adj_ion = nullptr;
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G4String ion_name = "not_defined";
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};
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#endif
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