Gabriele Cosmo
239 lines
8.3 KiB
C++
239 lines
8.3 KiB
C++
// This code implementation is the intellectual property of
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// the RD44 GEANT4 collaboration.
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//
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// By copying, distributing or modifying the Program (or any work
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// based on the Program) you indicate your acceptance of this statement,
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// and all its terms.
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//
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// $Id: G4ParticleChange.hh,v 2.6 1998/12/11 22:18:58 kurasige Exp $
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// GEANT4 tag $Name: geant4-00 $
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//
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//
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// ------------------------------------------------------------
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// GEANT 4 class header file
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//
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// For information related to this code contact:
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// CERN, CN Division, ASD group
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//
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// ------------------------------------------------------------
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// Implemented for the new scheme 23 Mar. 1998 H.Kurahige
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//
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// This class is a concrete class for ParticleChange which
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// has all functionality in old scheme.
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//
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// This class contains the results after invocation of a physics process.
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// This includes final states of parent particle (momentum, energy,
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// etc) and secondary particles generated by the interaction.
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// The tracking assumes that all the values of energy and
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// momentum are in global reference system, therefore all the
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// needed Lorentz transformations must have been already Done
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// when filling the data-members of this class.
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//
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// ---------------------------------------------------------------
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// IMPORTANT NOTE: Although the name of the class and methods are
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// "Change", what it stores (and returns in get) are the "FINAL"
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// values of the Position, Momentum, etc.
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// ------------------------------------------------------------
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// modify AddSecondary methods for "GoodForTracking" flag
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// 8 June 1998 H.Kurashige
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// Add Track weight 12 Nov. 1998 H.Kurashige
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// -------------------------------------------------------------
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#ifndef G4ParticleChange_h
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#define G4ParticleChange_h 1
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#include "globals.hh"
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#include "G4ios.hh"
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#include "G4ThreeVector.hh"
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#include "G4ParticleMomentum.hh"
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class G4DynamicParticle;
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#include "G4VParticleChange.hh"
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class G4ParticleChange: public G4VParticleChange
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{
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public:
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// default constructor
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G4ParticleChange();
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G4ParticleChange(G4bool useEB);
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// destructor
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virtual ~G4ParticleChange();
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protected:
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// hide copy constructor and assignment operaor as protected
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G4ParticleChange(const G4ParticleChange &right);
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G4ParticleChange & operator=(const G4ParticleChange &right);
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public:
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// equal/unequal operator
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G4bool operator==(const G4ParticleChange &right) const;
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G4bool operator!=(const G4ParticleChange &right) const;
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public:
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// ----------------------------------------------------
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// --- the following methods are for updating G4Step -----
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// Return the pointer to the G4Step after updating the Step information
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// by using final state information of the track given by a physics
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// process
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virtual G4Step* UpdateStepForAlongStep(G4Step* Step);
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// A physics process gives the final state of the particle
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// relative to the initial state at the beginning of the Step,
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// i.e., based on information of G4Track (or equivalently
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// the PreStepPoint)
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// In this method, the differences (delta) between these two states
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// are calculated, and are accumulated in PostStepPoint.
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// Take note that the return type of GetMomentumChange is a
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// pointer to G4ParticleMometum. Also it is a normalized
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// momentum vector.
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virtual G4Step* UpdateStepForAtRest(G4Step* Step);
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virtual G4Step* UpdateStepForPostStep(G4Step* Step);
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// A physics process gives the final state of the particle
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// based on information of G4Track (or equivalently the PreStepPoint)
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virtual void Initialize(const G4Track&);
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// Initialize all propoerties by using G4Track information
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protected:
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G4Step* UpdateStepInfo(G4Step* Step);
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// Update the G4Step specific attributes
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// (i.e. SteppingControl, LocalEnergyDeposit, and TrueStepLength)
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public:
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// ----------------------------------------------------
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//--- methods to keep information of the final state--
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// IMPORTANT NOTE: Although the name of the class and methods are
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// "Change", what it stores (and returns in get) are the "FINAL"
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// values of the Position, Momentum, etc.
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const G4ParticleMomentum* GetMomentumChange() const;
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void SetMomentumChange(G4double Px, G4double Py, G4double Pz);
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void SetMomentumChange(const G4ThreeVector& Pfinal);
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// Get/Set theMomentumChange vector: it is the final momentum direction.
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const G4ThreeVector* GetPolarizationChange() const;
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void SetPolarizationChange(G4double Px, G4double Py, G4double Pz);
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void SetPolarizationChange(const G4ThreeVector& finalPoralization);
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// Get/Set thePolarizationChange vector.
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G4double GetEnergyChange() const;
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void SetEnergyChange(G4double theEnergyChange);
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// Get/Set the final kinetic energy of the current particle.
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G4double GetProperTimeChange() const;
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void SetProperTimeChange(G4double t);
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// Get/Set theProperTimeChange vector
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const G4ThreeVector* GetPositionChange() const;
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void SetPositionChange(G4double x, G4double y, G4double z);
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void SetPositionChange(const G4ThreeVector& finalPosition);
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// Get/Set the final position of the current particle.
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G4double GetTimeChange() const;
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void SetTimeChange(G4double t);
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// Get/Set theTimeChange vector.
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G4double GetWeightChange() const;
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void SetWeightChange(G4double w);
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// Get/Set theWeightChange
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// these methods are valid if fUseEB is true;
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// -- Utility functions --
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G4ThreeVector GetGlobalPosition(const G4ThreeVector& displacement) const;
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// Convert the position displacement to the global position.
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G4double GetGlobalTime(G4double timeDelay) const;
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// Convert the time delay to the global time.
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G4ThreeVector CalcMomentum(G4double energy,
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G4ParticleMomentum direction,
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G4double mass ) const;
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// Calculate momentum by using Energy, Momentum Direction, and Mass
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// ----------------------------------------------------
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// ----------------------------------------------------
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// --- methods for adding secondaries
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void AddSecondary(G4Track* aSecondary);
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// Add a secondary particle to theListOfSecondaries.
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void AddSecondary(G4DynamicParticle* aSecondary,
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G4bool IsGoodForTracking = false );
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// Add a secondary particle to theListOfSecondaries.
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// position and time are same as thePositionChange and theTimeChange
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void AddSecondary(G4DynamicParticle* aSecondary,
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G4ThreeVector position,
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G4bool IsGoodForTracking = false );
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// Add a secondary particle to theListOfSecondaries.
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// global time are same as theTimeChange and theTimeChange
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void AddSecondary(G4DynamicParticle* aSecondary,
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G4double time,
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G4bool IsGoodForTracking = false );
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// Add a secondary particle to theListOfSecondaries.
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// position and are same as thePositionChange
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// ----------------------------------------------------
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public:
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virtual void DumpInfo() const;
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protected:
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G4ParticleMomentum theMomentumChange;
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// It is the vector containing the final momentum direction
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// after the invoked process. The application of the change
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// of the momentum direction of the particle is not Done here.
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// The responsibility to apply the change is up the entity
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// which invoked the process.
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G4ThreeVector thePolarizationChange;
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// The changed (final) polarization of a given track
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G4double theEnergyChange;
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// The final kinetic energy of the current track
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G4ThreeVector thePositionChange;
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// The changed (final) position of a given track
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G4double theTimeChange;
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// The changed (final) global time of a given track
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G4double theProperTimeChange;
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// The changed (final) proper time of a given track
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G4double theWeightChange;
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// The Chnanged (final) weight of a given track
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public:
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// these methods is used for switch on/off EB in all ParticleChange objects
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static void SwOnAllEB();
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static void SwOffAllEB();
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private:
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static G4bool fUseEBForAll;
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public:
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// for Debug
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G4bool debugFlag;
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G4bool CheckIt(const G4Track&);
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};
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#include "G4ParticleChange.icc"
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#endif
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