#include <G4CrossSectionPatch.hh>

Inheritance diagram for G4CrossSectionPatch:

Public Member Functions
virtual G4double	CrossSection (const G4KineticTrack &trk1, const G4KineticTrack &trk2) const

	G4CrossSectionPatch ()

virtual const G4CrossSectionVector *	GetComponents () const =0

virtual G4double	HighLimit () const

virtual G4bool	IsValid (G4double e) const

virtual G4double	LowLimit () const

virtual G4String	Name () const =0

G4bool	operator!= (const G4CrossSectionPatch &right) const

G4bool	operator!= (const G4VCrossSectionSource &right) const

G4bool	operator== (const G4CrossSectionPatch &right) const

G4bool	operator== (const G4VCrossSectionSource &right) const

virtual void	Print () const

virtual void	PrintAll (const G4KineticTrack &trk1, const G4KineticTrack &trk2) const

virtual	~G4CrossSectionPatch ()

Protected Member Functions
G4double	FcrossX (G4double e, G4double e0, G4double sigma, G4double eParam, G4double power) const

const G4ParticleDefinition *	FindKeyParticle (const G4KineticTrack &trk1, const G4KineticTrack &trk2) const

const G4ParticleDefinition *	FindLightParticle (const G4KineticTrack &trk1, const G4KineticTrack &trk2) const

G4bool	InLimits (G4double e, G4double eLow, G4double eHigh) const

G4double	Transition (const G4KineticTrack &trk1, const G4KineticTrack &trk2, const G4VCrossSectionSource comp1, const G4VCrossSectionSource comp2) const

G4double	Transition (G4double ecm, G4double sigma1, G4double sigma2, G4double e1, G4double e2) const

Private Member Functions
	G4CrossSectionPatch (const G4CrossSectionPatch &right)

G4CrossSectionPatch &	operator= (const G4CrossSectionPatch &right)

Detailed Description

Definition at line 50 of file G4CrossSectionPatch.hh.

Constructor & Destructor Documentation

◆ G4CrossSectionPatch() [1/2]

G4CrossSectionPatch::G4CrossSectionPatch ( )

Definition at line 48 of file G4CrossSectionPatch.cc.

49{ }

◆ ~G4CrossSectionPatch()

G4CrossSectionPatch::~G4CrossSectionPatch ( )

virtual

Definition at line 52 of file G4CrossSectionPatch.cc.

53{ }

◆ G4CrossSectionPatch() [2/2]

G4CrossSectionPatch::G4CrossSectionPatch ( const G4CrossSectionPatch & right )

private

Member Function Documentation

◆ CrossSection()

G4double G4CrossSectionPatch::CrossSection	(	const G4KineticTrack &	trk1,
		const G4KineticTrack &	trk2
	)		const

virtual

Implements G4VCrossSectionSource.

Definition at line 68 of file G4CrossSectionPatch.cc.

{
  // The cross section is provided by one of the components, according to their energy
  // validity range
 
  G4double crossSection = 0.;
  G4double ecm = (trk1.Get4Momentum() + trk2.Get4Momentum()).mag();
 
  const G4CrossSectionVector* components = GetComponents();
  if (components != 0)
    {
      G4int nComponents = this->GetComponents()->size();
//      G4int nValid = 0;
      
      G4int i;
      for (i=0; i<nComponents; i++)
    {
          G4CrossSectionSourcePtr componentPtr = (*components)[i];
      G4VCrossSectionSource* component = componentPtr();
      if (component->IsValid(ecm))
        {
          crossSection = component->CrossSection(trk1,trk2);
        }
      else if (i < (nComponents - 1) )
        {
          G4CrossSectionSourcePtr nextPtr = (*components)[i+1];
          G4VCrossSectionSource* next = nextPtr();
          if (ecm > component->HighLimit() && ecm < next->LowLimit())
        {
          // Merge cross-sections in transition region between two validity ranges
          crossSection = Transition(trk1,trk2,component,next);
        }
        }
    }
    }
 
  return crossSection;
}

References G4VCrossSectionSource::CrossSection(), G4KineticTrack::Get4Momentum(), GetComponents(), G4VCrossSectionSource::HighLimit(), G4VCrossSectionSource::IsValid(), G4VCrossSectionSource::LowLimit(), and Transition().

◆ FcrossX()

G4double G4VCrossSectionSource::FcrossX	(	G4double	e,
		G4double	e0,
		G4double	sigma,
		G4double	eParam,
		G4double	power
	)		const

protectedinherited

Definition at line 174 of file G4VCrossSectionSource.cc.

{
  G4double result = 0.;
 
  G4double denom = eParam*eParam + (e-e0)*(e-e0);
  if (denom > 0.) 
  {
    G4double value = (2.* eParam * sigma * (e-e0) / denom) * G4Pow::GetInstance()->powA(((e0 + eParam) / e), power);
    result = std::max(0., value);
  }
  return result;
}     

References G4Pow::GetInstance(), G4INCL::Math::max(), and G4Pow::powA().

◆ FindKeyParticle()

const G4ParticleDefinition * G4VCrossSectionSource::FindKeyParticle	(	const G4KineticTrack &	trk1,
		const G4KineticTrack &	trk2
	)		const

protectedinherited

Definition at line 49 of file G4VCrossSectionSource.cc.

{
  const G4ParticleDefinition * result;
  
  const G4ParticleDefinition * p1 = trk1.GetDefinition();
  const G4ParticleDefinition * p2 = trk2.GetDefinition();
  
  if( (p1==G4Proton::Proton() && p2==G4Proton::Proton() ) ||
      (p1==G4Neutron::Neutron() && p2==G4Neutron::Neutron()) )
  {
    result = G4Proton::Proton();
  }
  else if( (p1==G4Neutron::Neutron() && p2==G4Proton::Proton()) ||
           (p2==G4Neutron::Neutron() && p1==G4Proton::Proton()) )
  {
    result = G4Neutron::Neutron();
  }
  else
  {
    throw G4HadronicException(__FILE__, __LINE__, "G4VCrossSectionSource: unklnown particles in FindKeyParticle");
  }
  return result;
}

References G4KineticTrack::GetDefinition(), G4Neutron::Neutron(), and G4Proton::Proton().

Referenced by G4XNNElasticLowE::CrossSection(), and G4XNNTotalLowE::CrossSection().

◆ FindLightParticle()

const G4ParticleDefinition * G4VCrossSectionSource::FindLightParticle	(	const G4KineticTrack &	trk1,
		const G4KineticTrack &	trk2
	)		const

protectedinherited

Definition at line 158 of file G4VCrossSectionSource.cc.

{
  G4double mass1 = trk1.GetDefinition()->GetPDGMass();
  G4double mass2 = trk2.GetDefinition()->GetPDGMass();
  if (mass1 < mass2)
    {
      return trk1.GetDefinition();
    }
  else
    {
      return trk2.GetDefinition();
    }
}

References G4KineticTrack::GetDefinition(), and G4ParticleDefinition::GetPDGMass().

Referenced by G4XMesonBaryonElastic::CrossSection().

◆ GetComponents()

virtual const G4CrossSectionVector * G4CrossSectionPatch::GetComponents ( ) const

pure virtual

Implements G4VCrossSectionSource.

Implemented in G4XNNElastic, G4XNNTotal, G4XnpElastic, and G4XnpTotal.

Referenced by CrossSection(), and IsValid().

◆ HighLimit()

G4double G4VCrossSectionSource::HighLimit ( ) const

virtualinherited

Reimplemented in G4XNNElasticLowE, G4XNNTotalLowE, G4XnpElasticLowE, and G4XnpTotalLowE.

Definition at line 146 of file G4VCrossSectionSource.cc.

{
  return DBL_MAX; 
}

References DBL_MAX.

Referenced by CrossSection(), G4VCrossSectionSource::IsValid(), and Transition().

◆ InLimits()

G4bool G4VCrossSectionSource::InLimits	(	G4double	e,
		G4double	eLow,
		G4double	eHigh
	)		const

protectedinherited

Definition at line 133 of file G4VCrossSectionSource.cc.

{
  G4bool answer = false;
  if (e >= eLow && e <= eHigh) answer = true;
  return answer;
}

Referenced by G4XAnnihilationChannel::IsValid(), G4XAqmElastic::IsValid(), G4XAqmTotal::IsValid(), G4XMesonBaryonElastic::IsValid(), G4XNNElasticLowE::IsValid(), G4XnpElasticLowE::IsValid(), G4XnpTotalLowE::IsValid(), G4XPDGElastic::IsValid(), and G4XPDGTotal::IsValid().

◆ IsValid()

G4bool G4CrossSectionPatch::IsValid ( G4double e ) const

virtual

Reimplemented from G4VCrossSectionSource.

Definition at line 109 of file G4CrossSectionPatch.cc.

{
  // The Patch is valid if any of its components are valid
  G4bool answer = false;
  const G4CrossSectionVector* components = GetComponents();
  if (components != 0)
    {
      G4int n = components->size();
      G4int i;
      for (i=0; i<n; i++)
    {
      G4CrossSectionSourcePtr componentPtr = (*components)[i];
          G4VCrossSectionSource* component = componentPtr();
      if (component->IsValid(e)) 
        {
          answer = true;
          break;
        }
    }
    }
  return answer;
}

References GetComponents(), G4VCrossSectionSource::IsValid(), and CLHEP::detail::n.

◆ LowLimit()

G4double G4VCrossSectionSource::LowLimit ( ) const

virtualinherited

Reimplemented in G4XPDGElastic, and G4XPDGTotal.

Definition at line 140 of file G4VCrossSectionSource.cc.

{
  return 0.; 
}

Referenced by CrossSection(), G4VCrossSectionSource::IsValid(), and Transition().

◆ Name()

virtual G4String G4VCrossSectionSource::Name ( ) const

pure virtualinherited

Implemented in G4XAnnihilationChannel, G4XAqmElastic, G4XAqmTotal, G4XMesonBaryonElastic, G4XNNElastic, G4XNNElasticLowE, G4XNNTotal, G4XNNTotalLowE, G4XnpElastic, G4XnpElasticLowE, G4XnpTotal, G4XnpTotalLowE, G4XPDGElastic, G4XPDGTotal, G4XpimNTotal, G4XpipNTotal, and G4XResonance.

Referenced by G4VCrossSectionSource::Print(), and G4VCrossSectionSource::PrintAll().

◆ operator!=() [1/2]

G4bool G4CrossSectionPatch::operator!= ( const G4CrossSectionPatch & right ) const

Definition at line 62 of file G4CrossSectionPatch.cc.

{
  return (this != (G4CrossSectionPatch*) &right);
}

◆ operator!=() [2/2]

G4bool G4VCrossSectionSource::operator!= ( const G4VCrossSectionSource & right ) const

inherited

Definition at line 80 of file G4VCrossSectionSource.cc.

{
  return (this != (G4VCrossSectionSource *) &right);
}

◆ operator=()

G4CrossSectionPatch & G4CrossSectionPatch::operator= ( const G4CrossSectionPatch & right )

private

◆ operator==() [1/2]

G4bool G4CrossSectionPatch::operator== ( const G4CrossSectionPatch & right ) const

Definition at line 56 of file G4CrossSectionPatch.cc.

{
  return (this == (G4CrossSectionPatch*) &right);
}

◆ operator==() [2/2]

G4bool G4VCrossSectionSource::operator== ( const G4VCrossSectionSource & right ) const

inherited

Definition at line 74 of file G4VCrossSectionSource.cc.

{
  return (this == (G4VCrossSectionSource *) &right);
}

◆ Print()

void G4VCrossSectionSource::Print ( ) const

virtualinherited

Reimplemented in G4XNNElasticLowE, G4XnpElasticLowE, and G4XnpTotalLowE.

Definition at line 86 of file G4VCrossSectionSource.cc.

{
  G4int nComponents = 0;
  const G4CrossSectionVector* components = GetComponents();
  if (components)
    {
      nComponents = components->size();
    }
  G4cout << "---- " << this->Name() << " ---- has " << nComponents << " components" <<G4endl;
  G4int i;
  for (i=0; i<nComponents; i++)
    {
      G4cout << "-" <<  this->Name() << " - Component " << i << ": " <<G4endl;
 
      G4CrossSectionSourcePtr componentPtr = (*components)[i];
      G4VCrossSectionSource* component = componentPtr();
      component->Print();
    }
}

References G4cout, G4endl, G4VCrossSectionSource::GetComponents(), G4VCrossSectionSource::Name(), and G4VCrossSectionSource::Print().

Referenced by G4VCollision::Print(), G4VCrossSectionSource::Print(), G4XNNElasticLowE::Print(), G4XnpElasticLowE::Print(), and G4XnpTotalLowE::Print().

◆ PrintAll()

void G4VCrossSectionSource::PrintAll	(	const G4KineticTrack &	trk1,
		const G4KineticTrack &	trk2
	)		const

virtualinherited

Definition at line 107 of file G4VCrossSectionSource.cc.

{
  G4double sqrtS = (trk1.Get4Momentum() + trk2.Get4Momentum()).mag();
  G4double sigma = CrossSection(trk1,trk2) / millibarn;
  G4cout << "---- " << Name() << ": "
     << "Ecm = " << sqrtS / GeV << " GeV -  " 
     << " Cross section = " << sigma << " mb "
     << G4endl;
 
  G4int nComponents = 0;
  const G4CrossSectionVector* components = GetComponents();
  if (components != 0)
    {
      nComponents = components->size();
    }
  G4int i;
  for (i=0; i<nComponents; i++)
    {
      G4cout << "* Component " << i << ": ";
      G4CrossSectionSourcePtr componentPtr = (*components)[i];
      G4VCrossSectionSource* component = componentPtr();
      component->PrintAll(trk1,trk2);
    }
}

References G4VCrossSectionSource::CrossSection(), G4cout, G4endl, G4KineticTrack::Get4Momentum(), G4VCrossSectionSource::GetComponents(), GeV, millibarn, G4VCrossSectionSource::Name(), and G4VCrossSectionSource::PrintAll().

Referenced by G4VCrossSectionSource::PrintAll().

◆ Transition() [1/2]

G4double G4CrossSectionPatch::Transition	(	const G4KineticTrack &	trk1,
		const G4KineticTrack &	trk2,
		const G4VCrossSectionSource *	comp1,
		const G4VCrossSectionSource *	comp2
	)		const

protected

Definition at line 133 of file G4CrossSectionPatch.cc.

{
  //Merge two cross sections in the transition region between their validity ranges
 
  G4double crossSection = 0.;
 
  G4double ecm = (trk1.Get4Momentum() + trk2.Get4Momentum()).mag();
  G4double sigma1 = comp1->CrossSection(trk1,trk2);
  G4double sigma2 = comp2->CrossSection(trk1,trk2);
  G4double denom = comp2->LowLimit() - comp1->HighLimit();
  G4double diff = ecm - comp1->HighLimit();
  if (denom > 0. && diff > 0.)
    {
      G4double ratio = diff / denom;
      crossSection = (1.- ratio) * sigma1 + ratio * sigma2;
    }
 
  return crossSection;
}

References G4VCrossSectionSource::CrossSection(), G4KineticTrack::Get4Momentum(), G4VCrossSectionSource::HighLimit(), and G4VCrossSectionSource::LowLimit().

Referenced by CrossSection().

◆ Transition() [2/2]

G4double G4CrossSectionPatch::Transition	(	G4double	ecm,
		G4double	sigma1,
		G4double	sigma2,
		G4double	e1,
		G4double	e2
	)		const

protected

Definition at line 156 of file G4CrossSectionPatch.cc.

{
  //Merge two cross sections in the transition region between their validity ranges
 
  G4double crossSection = 0.;
  
  G4double denom = e2 - e1;
  G4double diff = ecm - e1;
  if (denom > 0. && diff > 0.)
    {
      G4double ratio = diff / denom;
      crossSection = (1.- ratio) * sigma1 + ratio * sigma2;
    }
 
  return crossSection;
}

References e1, and e2.

The documentation for this class was generated from the following files:

source/processes/hadronic/models/im_r_matrix/include/G4CrossSectionPatch.hh
source/processes/hadronic/models/im_r_matrix/src/G4CrossSectionPatch.cc

Public Member Functions

Protected Member Functions

Private Member Functions

Detailed Description

Constructor & Destructor Documentation

◆ G4CrossSectionPatch() [1/2]

◆ ~G4CrossSectionPatch()

◆ G4CrossSectionPatch() [2/2]

Member Function Documentation

◆ CrossSection()

◆ FcrossX()

◆ FindKeyParticle()

◆ FindLightParticle()

◆ GetComponents()

◆ HighLimit()

◆ InLimits()

◆ IsValid()

◆ LowLimit()

◆ Name()

◆ operator!=() [1/2]

◆ operator!=() [2/2]

◆ operator=()

◆ operator==() [1/2]

◆ operator==() [2/2]

◆ Print()

◆ PrintAll()

◆ Transition() [1/2]

◆ Transition() [2/2]