G4VDecayChannel.hh

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// G4VDecayChannel
//
// Class description:
//
// Abstract class to describe decay kinematics
 
// Author: H.Kurashige, 27 July 1996 
// --------------------------------------------------------------------
#ifndef G4VDecayChannel_hh
#define G4VDecayChannel_hh 1
 
#include <cmath>
 
#include "G4ios.hh"
#include "globals.hh"
#include "G4ThreeVector.hh"
#include "G4Threading.hh"
#include "G4AutoLock.hh"
 
class G4ParticleDefinition;
class G4DecayProducts;
class G4ParticleTable;
 
class G4VDecayChannel
{
  public:
 
    G4VDecayChannel(const G4String& aName, G4int Verbose = 1);
    G4VDecayChannel(const G4String& aName, 
                    const G4String& theParentName,
                          G4double  theBR,
                          G4int     theNumberOfDaughters,
                    const G4String& theDaughterName1,
                    const G4String& theDaughterName2 = "",
                    const G4String& theDaughterName3 = "",
                    const G4String& theDaughterName4 = "" );
      // Constructors 
 
    virtual ~G4VDecayChannel();
      // Destructor
 
    G4bool operator==(const G4VDecayChannel& r) const { return (this == &r); }
    G4bool operator!=(const G4VDecayChannel& r) const { return (this != &r); }
      // Equality operators
 
    inline G4bool operator<(const G4VDecayChannel& right) const;
      // Less-than operator is defined for G4DecayTable
 
    virtual G4DecayProducts* DecayIt(G4double parentMass = -1.0) = 0;
 
    inline const G4String& GetKinematicsName() const;
      // Get kinematics name
    inline G4double GetBR() const;
      // Get branching ratio
    inline G4int GetNumberOfDaughters() const;     
      // Get number of daughter particles
 
    inline G4ParticleDefinition* GetParent();
      // Get the pointer to the parent particle
    inline G4ParticleDefinition* GetDaughter(G4int anIndex);
      // Get the pointer to a daughter particle 
 
    G4int GetAngularMomentum();
      // Get the angular momentum of the decay
    inline const G4String& GetParentName() const;
      // Get the name of the parent particle
    inline const G4String& GetDaughterName(G4int anIndex) const;
      // Get the name of a daughter particle
 
    inline G4double GetParentMass() const; 
      // Get mass of parent
    inline G4double GetDaughterMass(G4int anIndex) const; 
      // Get mass of daughter
 
    void SetParent(const G4ParticleDefinition * particle_type);
    inline void SetParent(const G4String &particle_name);
      // Set the parent particle (by name or by pointer) 
    void SetBR(G4double value); 
      // Set branching ratio
    void SetNumberOfDaughters(G4int value);     
      // Set number of daughter particles
    void SetDaughter(G4int anIndex, const G4ParticleDefinition* particle_type);
    void SetDaughter(G4int anIndex, const G4String& particle_name);
      // Set a daughter particle (by name or by pointer) 
 
    inline void SetVerboseLevel(G4int value);
    inline G4int GetVerboseLevel() const;
    void DumpInfo();
 
    inline G4double GetRangeMass() const;
    inline void SetRangeMass(G4double val);
    virtual G4bool IsOKWithParentMass(G4double parentMass); 
 
    void SetPolarization(const G4ThreeVector&);
    inline const G4ThreeVector& GetPolarization() const;
 
  protected:
 
    void ClearDaughtersName();
      // Clear daughters array
 
    inline void CheckAndFillDaughters();
    inline void CheckAndFillParent();
 
    G4double DynamicalMass(G4double massPDG, G4double width,
                           G4double maxDev = 1.0) const;
 
    G4VDecayChannel();
      // Default constructor
 
    G4VDecayChannel(const G4VDecayChannel&);
    G4VDecayChannel& operator=(const G4VDecayChannel&);
      // Copy constructor and assignment operator
 
  private:
 
    void FillDaughters();
      // Fill daughters array
    void FillParent();
      // Fill parent
 
    const G4String& GetNoName() const;
 
  protected:
 
    G4String kinematics_name = "";
      // Kinematics name
    G4double rbranch = 0.0;
      // Branching ratio  [0.0 - 1.0]
    G4String* parent_name = nullptr;
      // Parent particle
    G4String** daughters_name = nullptr;
      // Daughter particles
 
    G4double rangeMass = 2.5;
      // Range of mass allowed in decay
 
    G4ThreeVector parent_polarization;
      // Polarization of the parent particle
   
    G4ParticleTable* particletable = nullptr;
      // Pointer to particle table
 
    static const G4String noName;
 
    G4ParticleDefinition*  G4MT_parent = nullptr;
    G4ParticleDefinition** G4MT_daughters = nullptr;
    G4double               G4MT_parent_mass = 0.0;
    G4double*              G4MT_daughters_mass = nullptr;
    G4double*              G4MT_daughters_width = nullptr;
    G4Mutex daughtersMutex;
    G4Mutex parentMutex;
 
    G4int numberOfDaughters = 0;
      // Number of daughters
 
    G4int verboseLevel = 1;
      // Control flag for output message
      //  0: Silent
      //  1: Warning message
      //  2: More
};
 
// ------------------------------------------------------------
// Inline methods
// ------------------------------------------------------------
 
inline
G4bool G4VDecayChannel::operator<(const G4VDecayChannel& right) const
{
  return (this->rbranch < right.rbranch);
}
 
inline 
G4ParticleDefinition* G4VDecayChannel::GetDaughter(G4int anIndex)
{ 
  // pointers to daughter particles are filled, if they are not set yet 
  CheckAndFillDaughters();
 
  // get the pointer to a daughter particle
  if ( (anIndex>=0) && (anIndex<numberOfDaughters) )
  {
    return G4MT_daughters[anIndex];
  }
  else
  {
    if (verboseLevel>0)
      G4cout << "G4VDecayChannel::GetDaughter  index out of range "
             << anIndex << G4endl;
    return nullptr;
  }
}
 
inline
const G4String& G4VDecayChannel::GetDaughterName(G4int anIndex) const
{
  if ( (anIndex>=0) && (anIndex<numberOfDaughters) )
  {
    return *daughters_name[anIndex];
  }
  else
  {
    if (verboseLevel>0)
    {
      G4cout << "G4VDecayChannel::GetDaughterName ";
      G4cout << "index out of range " << anIndex << G4endl;
    }
    return GetNoName();
  }
}
 
inline
G4double G4VDecayChannel::GetDaughterMass(G4int anIndex) const
{
  if ( (anIndex>=0) && (anIndex<numberOfDaughters) )
  {
    return G4MT_daughters_mass[anIndex];
  }
  else
  {
    if (verboseLevel>0)
    {
      G4cout << "G4VDecayChannel::GetDaughterMass ";
      G4cout << "index out of range " << anIndex << G4endl;
    }
    return 0.0;
  }
}
 
inline 
G4ParticleDefinition* G4VDecayChannel::GetParent()
{ 
  // the pointer to the parent particle is filled, if it is not set yet 
  CheckAndFillParent();
  // get the pointer to the parent particle
  return G4MT_parent;
}
 
inline
const G4String& G4VDecayChannel::GetParentName() const
{
  return *parent_name;
}
 
inline
G4double G4VDecayChannel::GetParentMass() const
{
  return G4MT_parent_mass;
}
 
inline
void G4VDecayChannel::SetParent(const G4String& particle_name)
{
  if (parent_name != nullptr) delete parent_name;
  parent_name = new G4String(particle_name);
  G4MT_parent = nullptr;
}
 
inline
G4int G4VDecayChannel::GetNumberOfDaughters() const 
{ 
  return  numberOfDaughters;
}
 
inline
const G4String& G4VDecayChannel::GetKinematicsName() const
{
  return kinematics_name;
}
 
inline
G4double G4VDecayChannel::GetBR() const
{
  return rbranch;
}
 
inline
void G4VDecayChannel::SetVerboseLevel(G4int value)
{
  verboseLevel = value;
}
 
inline
G4int G4VDecayChannel::GetVerboseLevel() const
{
  return verboseLevel;
}
 
inline   
G4double G4VDecayChannel::GetRangeMass() const
{
  return rangeMass;
}
 
inline   
  void  G4VDecayChannel::SetRangeMass(G4double val){ if(val>=0.) rangeMass=val; }
 
inline 
void G4VDecayChannel::SetPolarization(const G4ThreeVector& polar)
{
  parent_polarization = polar;
}
 
inline 
const G4ThreeVector& G4VDecayChannel::GetPolarization() const
{
  return parent_polarization;
}
 
inline
void G4VDecayChannel::CheckAndFillDaughters()
{
  G4AutoLock l(&daughtersMutex);
  if ( G4MT_daughters == nullptr )
  {
    l.unlock();
    FillDaughters();
  }
}
 
inline
void G4VDecayChannel::CheckAndFillParent()
{
  G4AutoLock l(&parentMutex);
  if ( G4MT_parent == nullptr )
  {
    l.unlock();
    FillParent();
  }
}
 
#endif