G4RToEConvForProton Class Reference

#include <G4RToEConvForProton.hh>

Inheritance diagram for G4RToEConvForProton:

Public Member Functions
	G4RToEConvForProton ()
virtual	~G4RToEConvForProton ()
virtual G4double	Convert (G4double rangeCut, const G4Material *material)
virtual void	Reset ()
Public Member Functions inherited from G4VRangeToEnergyConverter
	G4VRangeToEnergyConverter ()
	G4VRangeToEnergyConverter (const G4VRangeToEnergyConverter &right)
G4VRangeToEnergyConverter &	operator= (const G4VRangeToEnergyConverter &right)
virtual	~G4VRangeToEnergyConverter ()
G4int	operator== (const G4VRangeToEnergyConverter &right) const
G4int	operator!= (const G4VRangeToEnergyConverter &right) const
const G4ParticleDefinition *	GetParticleType () const
const G4PhysicsTable *	GetLossTable () const
void	SetVerboseLevel (G4int value)
G4int	GetVerboseLevel () const

Protected Member Functions
virtual G4double	ComputeLoss (G4double AtomicNumber, G4double KineticEnergy)
Protected Member Functions inherited from G4VRangeToEnergyConverter
virtual void	BuildLossTable ()
virtual void	BuildRangeVector (const G4Material *aMaterial, G4RangeVector *rangeVector)
G4double	ConvertCutToKineticEnergy (G4RangeVector *theRangeVector, G4double theCutInLength, size_t materialIndex) const

Protected Attributes
G4double	Mass
G4double	Z
G4double	tau0
G4double	taul
G4double	taum
G4double	ionpot
G4double	ca
G4double	cba
G4double	cc
Protected Attributes inherited from G4VRangeToEnergyConverter
G4double	fMaxEnergyCut
const G4ParticleDefinition *	theParticle
G4LossTable *	theLossTable
G4int	NumberOfElements
const G4int	TotBin
std::vector< G4RangeVector * >	fRangeVectorStore

Additional Inherited Members
Static Public Member Functions inherited from G4VRangeToEnergyConverter
static void	SetEnergyRange (G4double lowedge, G4double highedge)
static G4double	GetLowEdgeEnergy ()
static G4double	GetHighEdgeEnergy ()
static G4double	GetMaxEnergyCut ()
static void	SetMaxEnergyCut (G4double value)
Protected Types inherited from G4VRangeToEnergyConverter
typedef G4PhysicsTable	G4LossTable
typedef G4PhysicsLogVector	G4LossVector
typedef G4PhysicsLogVector	G4RangeVector
Static Protected Attributes inherited from G4VRangeToEnergyConverter
static G4double	LowestEnergy = 0.99e-3*MeV
static G4double	HighestEnergy = 100.0e6*MeV
static G4double	MaxEnergyCut = 10.0*GeV

Detailed Description

Definition at line 51 of file G4RToEConvForProton.hh.

Constructor & Destructor Documentation

G4RToEConvForProton::G4RToEConvForProton

(

)

Definition at line 44 of file G4RToEConvForProton.cc.

References G4ParticleTable::FindParticle(), G4cout, G4endl, G4ParticleTable::GetParticleTable(), G4ParticleDefinition::GetPDGMass(), G4VRangeToEnergyConverter::GetVerboseLevel(), Mass, and G4VRangeToEnergyConverter::theParticle.

  : G4VRangeToEnergyConverter(),
    Mass(0.0),
    Z(-1.),  
    tau0(0.0), taul(0.0), taum(0.0),
    ionpot(0.0),
    ca(0.0), cba(0.0), cc(0.0)
{    
  theParticle =  G4ParticleTable::GetParticleTable()->FindParticle("proton");
  if (theParticle ==0) {
#ifdef G4VERBOSE
    if (GetVerboseLevel()>0) {
      G4cout << " G4RToEConvForProton::G4RToEConvForProton() ";
      G4cout << " proton is not defined !!" << G4endl;
    }
#endif
  } else {
    Mass = theParticle->GetPDGMass();
  } 
}

G4RToEConvForProton::~G4RToEConvForProton ( )

virtual

Definition at line 65 of file G4RToEConvForProton.cc.

{ 
}

Member Function Documentation

G4double G4RToEConvForProton::ComputeLoss ( G4double  AtomicNumber, G4double  KineticEnergy  )

protectedvirtual

Implements G4VRangeToEnergyConverter.

Definition at line 81 of file G4RToEConvForProton.cc.

References ca, cba, cc, python.hepunit::electron_mass_c2, ionpot, Mass, python.hepunit::MeV, python.hepunit::proton_mass_c2, tau0, taul, taum, python.hepunit::twopi_mc2_rcl2, and Z.

{
  //  calculate dE/dx
  const G4double  z2Particle = 1.0;

  if( std::fabs(AtomicNumber-Z)>0.1 ){
    // recalculate constants
    Z = AtomicNumber;
    G4double Z13 = std::exp(std::log(Z)/3.);
    tau0 = 0.1*Z13*MeV/proton_mass_c2;
    taum = 0.035*Z13*MeV/proton_mass_c2;
    taul = 2.*MeV/proton_mass_c2;
    ionpot = 1.6e-5*MeV*std::exp(0.9*std::log(Z));
    cc = (taul+1.)*(taul+1.)*std::log(2.*electron_mass_c2*taul*(taul+2.)/ionpot)/(taul*(taul+2.))-1.;
    cc = 2.*twopi_mc2_rcl2*Z*cc*std::sqrt(taul);
    ca = cc/((1.-0.5*std::sqrt(tau0/taum))*tau0);
    cba = -0.5/std::sqrt(taum);
  }

  G4double tau = KineticEnergy/Mass;
  G4double dEdx;
  if ( tau <= tau0 ) {
    dEdx = ca*(std::sqrt(tau)+cba*tau);
  } else {
    if( tau <= taul ) {
      dEdx = cc/std::sqrt(tau);
    } else {
      dEdx = (tau+1.)*(tau+1.)*
             std::log(2.*electron_mass_c2*tau*(tau+2.)/ionpot)/(tau*(tau+2.))-1.;
      dEdx = 2.*twopi_mc2_rcl2*Z*dEdx;
    }
  }
  return dEdx*z2Particle ;
}

G4double G4RToEConvForProton::Convert ( G4double  rangeCut, const G4Material *  material  )

virtual

Reimplemented from G4VRangeToEnergyConverter.

Definition at line 70 of file G4RToEConvForProton.cc.

References python.hepunit::keV, and python.hepunit::mm.

{
  // Simple formula
  //   range = Ekin/(100*keV)*(1*mm);
  return (rangeCut/(1.0*mm)) * (100.0*keV); 
}

void G4RToEConvForProton::Reset ( )

virtual

Reimplemented from G4VRangeToEnergyConverter.

Definition at line 121 of file G4RToEConvForProton.cc.

{
  // do nothing because loss tables and range vectors are not used 
  return;
}

Field Documentation

G4double G4RToEConvForProton::ca

protected

Definition at line 78 of file G4RToEConvForProton.hh.

Referenced by ComputeLoss().

G4double G4RToEConvForProton::cba

protected

Definition at line 79 of file G4RToEConvForProton.hh.

Referenced by ComputeLoss().

G4double G4RToEConvForProton::cc

protected

Definition at line 80 of file G4RToEConvForProton.hh.

Referenced by ComputeLoss().

G4double G4RToEConvForProton::ionpot

protected

Definition at line 77 of file G4RToEConvForProton.hh.

Referenced by ComputeLoss().

G4double G4RToEConvForProton::Mass

protected

Definition at line 72 of file G4RToEConvForProton.hh.

Referenced by ComputeLoss(), and G4RToEConvForProton().

G4double G4RToEConvForProton::tau0

protected

Definition at line 74 of file G4RToEConvForProton.hh.

Referenced by ComputeLoss().

G4double G4RToEConvForProton::taul

protected

Definition at line 75 of file G4RToEConvForProton.hh.

Referenced by ComputeLoss().

G4double G4RToEConvForProton::taum

protected

Definition at line 76 of file G4RToEConvForProton.hh.

Referenced by ComputeLoss().

G4double G4RToEConvForProton::Z

protected

Definition at line 73 of file G4RToEConvForProton.hh.

Referenced by ComputeLoss().

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

• G4RToEConvForProton.hh
• G4RToEConvForProton.cc