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This commit is contained in:
Gabriele Cosmo
2019-12-06 15:12:28 +01:00
parent b2a62ae692
commit 5baee230e9
2997 changed files with 141580 additions and 98673 deletions
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source/processes/electromagnetic/highenergy/src/G4GammaConversionToMuons.cc
+50 -22
View File
@@ -24,7 +24,6 @@
// ********************************************************************
//
//
//
// ------------ G4GammaConversionToMuons physics process ------
// by H.Burkhardt, S. Kelner and R. Kokoulin, April 2002
//
@@ -40,10 +39,16 @@
#include "G4MuonPlus.hh"
#include "G4MuonMinus.hh"
#include "G4EmProcessSubType.hh"
#include "G4EmParameters.hh"
#include "G4LossTableManager.hh"
#include "G4BetheHeitler5DModel.hh"
#include "G4Gamma.hh"
#include "G4Electron.hh"
#include "G4Positron.hh"
#include "G4NistManager.hh"
#include "G4Log.hh"
#include "G4Exp.hh"
#include "G4ProductionCutsTable.hh"
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.....
@@ -60,34 +65,47 @@ G4GammaConversionToMuons::G4GammaConversionToMuons(const G4String& processName,
LimitEnergy (5.*Mmuon),
LowestEnergyLimit (2.*Mmuon),
HighestEnergyLimit(1e12*GeV), // ok to 1e12GeV, then LPM suppression
CrossSecFactor(1.)
Energy5DLimit(0.0),
CrossSecFactor(1.),
f5Dmodel(nullptr),
theGamma(G4Gamma::Gamma()),
theMuonPlus(G4MuonPlus::MuonPlus()),
theMuonMinus(G4MuonMinus::MuonMinus())
{
SetProcessSubType(fGammaConversionToMuMu);
MeanFreePath = DBL_MAX;
G4LossTableManager::Instance()->Register(this);
fManager = G4LossTableManager::Instance();
fManager->Register(this);
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.....
G4GammaConversionToMuons::~G4GammaConversionToMuons()
{
G4LossTableManager::Instance()->DeRegister(this);
fManager->DeRegister(this);
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.....
G4bool G4GammaConversionToMuons::IsApplicable(
const G4ParticleDefinition& particle)
G4bool G4GammaConversionToMuons::IsApplicable(const G4ParticleDefinition& part)
{
return ( &particle == G4Gamma::Gamma() );
return (&part == theGamma);
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
void G4GammaConversionToMuons::BuildPhysicsTable(const G4ParticleDefinition&)
void G4GammaConversionToMuons::BuildPhysicsTable(const G4ParticleDefinition& p)
// Build cross section and mean free path tables
{ //here no tables, just calling PrintInfoDefinition
PrintInfoDefinition();
Energy5DLimit = G4EmParameters::Instance()->MaxEnergyFor5DMuPair();
if(Energy5DLimit > 0.0 && !f5Dmodel) {
f5Dmodel = new G4BetheHeitler5DModel();
f5Dmodel->SetLeptonPair(theMuonPlus, theMuonMinus);
const size_t numElems = G4ProductionCutsTable::GetProductionCutsTable()->GetTableSize();
const G4DataVector cuts(numElems);
f5Dmodel->Initialise(&p, cuts);
}
PrintInfoDefinition();
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
@@ -117,6 +135,7 @@ G4GammaConversionToMuons::ComputeMeanFreePath(G4double GammaEnergy,
// computes and returns the photon mean free path in GEANT4 internal units
{
if(GammaEnergy <= LowestEnergyLimit) { return DBL_MAX; }
const G4ElementVector* theElementVector = aMaterial->GetElementVector();
const G4double* NbOfAtomsPerVolume = aMaterial->GetVecNbOfAtomsPerVolume();
@@ -159,9 +178,8 @@ G4double G4GammaConversionToMuons::ComputeCrossSectionPerAtom(
// Total cross section parametrisation from H.Burkhardt
// It gives a good description at any energy (from 0 to 10**21 eV)
{
if(Egam < LimitEnergy) return 0.0; // below threshold return 0
if(Egam <= LowestEnergyLimit) { return 0.0; }
G4double CrossSection = 0.0;
G4NistManager* nist = G4NistManager::Instance();
G4double PowThres,Ecor,B,Dn,Zthird,Winfty,WMedAppr,
@@ -188,7 +206,7 @@ G4double G4GammaConversionToMuons::ComputeCrossSectionPerAtom(
// pow(Egam,PowSat),1./PowSat); // threshold and saturation
G4double Eg=G4Exp(G4Log(1.-4.*Mmuon/Egam)*PowThres)*
G4Exp(G4Log( G4Exp(G4Log(Wsatur)*PowSat)+G4Exp(G4Log(Egam)*PowSat))/PowSat);
CrossSection=7./9.*sigfac*G4Log(1.+WMedAppr*CorFuc*Eg);
G4double CrossSection=7./9.*sigfac*G4Log(1.+WMedAppr*CorFuc*Eg);
CrossSection*=CrossSecFactor; // increase the CrossSection by (by default 1)
return CrossSection;
}
@@ -221,6 +239,22 @@ G4VParticleChange* G4GammaConversionToMuons::PostStepDoIt(
if (Egam <= LowestEnergyLimit) {
return G4VDiscreteProcess::PostStepDoIt(aTrack,aStep);
}
//
// Kill the incident photon
//
aParticleChange.ProposeMomentumDirection( 0., 0., 0. ) ;
aParticleChange.ProposeEnergy( 0. ) ;
aParticleChange.ProposeTrackStatus( fStopAndKill ) ;
if (Egam <= Energy5DLimit) {
std::vector<G4DynamicParticle*> fvect;
f5Dmodel->SampleSecondaries(&fvect, aTrack.GetMaterialCutsCouple(),
aTrack.GetDynamicParticle(), 0.0, DBL_MAX);
aParticleChange.SetNumberOfSecondaries(fvect.size());
for(auto dp : fvect) { aParticleChange.AddSecondary(dp); }
return G4VDiscreteProcess::PostStepDoIt(aTrack,aStep);
}
G4ParticleMomentum GammaDirection = aDynamicGamma->GetMomentumDirection();
// select randomly one element constituting the material
@@ -381,19 +415,13 @@ G4VParticleChange* G4GammaConversionToMuons::PostStepDoIt(
MuMinusDirection.rotateUz(GammaDirection);
aParticleChange.SetNumberOfSecondaries(2);
// create G4DynamicParticle object for the particle1
G4DynamicParticle* aParticle1= new G4DynamicParticle(
G4MuonPlus::MuonPlus(),MuPlusDirection,EPlus-Mmuon);
G4DynamicParticle* aParticle1 =
new G4DynamicParticle(theMuonPlus,MuPlusDirection,EPlus-Mmuon);
aParticleChange.AddSecondary(aParticle1);
// create G4DynamicParticle object for the particle2
G4DynamicParticle* aParticle2= new G4DynamicParticle(
G4MuonMinus::MuonMinus(),MuMinusDirection,EMinus-Mmuon);
G4DynamicParticle* aParticle2 =
new G4DynamicParticle(theMuonMinus,MuMinusDirection,EMinus-Mmuon);
aParticleChange.AddSecondary(aParticle2);
//
// Kill the incident photon
//
aParticleChange.ProposeMomentumDirection( 0., 0., 0. ) ;
aParticleChange.ProposeEnergy( 0. ) ;
aParticleChange.ProposeTrackStatus( fStopAndKill ) ;
// Reset NbOfInteractionLengthLeft and return aParticleChange
return G4VDiscreteProcess::PostStepDoIt( aTrack, aStep );
}
source/processes/electromagnetic/highenergy/src/G4mplIonisationModel.cc
+7 -4
View File
@@ -60,6 +60,7 @@
#include "G4ProductionCutsTable.hh"
#include "G4MaterialCutsCouple.hh"
#include "G4Log.hh"
#include "G4Pow.hh"
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
@@ -123,15 +124,17 @@ void G4mplIonisationModel::Initialise(const G4ParticleDefinition* p,
G4int n = dedx0->size();
if(n < numOfCouples) { dedx0->resize(numOfCouples); }
// initialise vector
G4Pow* g4calc = G4Pow::GetInstance();
// initialise vector assuming low conductivity
for(G4int i=0; i<numOfCouples; ++i) {
const G4Material* material =
theCoupleTable->GetMaterialCutsCouple(i)->GetMaterial();
theCoupleTable->GetMaterialCutsCouple(i)->GetMaterial();
G4double eDensity = material->GetElectronDensity();
G4double vF = electron_Compton_length*pow(3.*pi*pi*eDensity,0.3333333333);
G4double vF2 = 2*electron_Compton_length*g4calc->A13(3.*pi*pi*eDensity);
(*dedx0)[i] = pi_hbarc2_over_mc2*eDensity*nmpl*nmpl*
(G4Log(2.*vF/fine_structure_const) - 0.5)/vF;
(G4Log(vF2/fine_structure_const) - 0.5)/vF2;
}
}
}
source/processes/electromagnetic/highenergy/src/G4mplIonisationWithDeltaModel.cc
+3 -3
View File
@@ -132,15 +132,15 @@ G4mplIonisationWithDeltaModel::Initialise(const G4ParticleDefinition* p,
if(n < numOfCouples) { dedx0->resize(numOfCouples); }
G4Pow* g4calc = G4Pow::GetInstance();
// initialise vector
// initialise vector assuming low conductivity
for(G4int i=0; i<numOfCouples; ++i) {
const G4Material* material =
theCoupleTable->GetMaterialCutsCouple(i)->GetMaterial();
G4double eDensity = material->GetElectronDensity();
G4double vF = electron_Compton_length*g4calc->A13(3.*pi*pi*eDensity);
G4double vF2 = 2*electron_Compton_length*g4calc->A13(3.*pi*pi*eDensity);
(*dedx0)[i] = pi_hbarc2_over_mc2*eDensity*nmpl*nmpl*
(G4Log(2*vF/fine_structure_const) - 0.5)/vF;
(G4Log(vF2/fine_structure_const) - 0.5)/vF2;
}
}
}