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This commit is contained in:
Gabriele Cosmo
2016-06-09 15:37:50 +02:00
parent a8e9364cea
commit 96c8bcd0af
6923 changed files with 198390 additions and 41849 deletions
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source/processes/electromagnetic/muons/src/G4MuPairProductionModel.cc
+58 -30
View File
@@ -23,8 +23,8 @@
// * acceptance of all terms of the Geant4 Software license. *
// ********************************************************************
//
// $Id: G4MuPairProductionModel.cc,v 1.33 2007/05/22 17:35:58 vnivanch Exp $
// GEANT4 tag $Name: geant4-09-00 $
// $Id: G4MuPairProductionModel.cc,v 1.35 2007/10/11 13:52:04 vnivanch Exp $
// GEANT4 tag $Name: geant4-09-01 $
//
// -------------------------------------------------------------------
//
@@ -59,6 +59,7 @@
// 13-02-06 Add ComputeCrossSectionPerAtom (mma)
// 24-04-07 Add protection in SelectRandomAtom method (V.Ivantchenko)
// 12-05-06 Updated sampling (use cut) in SelectRandomAtom (A.Bogdanov)
// 11-10-07 Add ignoreCut flag (V.Ivanchenko)
//
// Class Description:
@@ -80,6 +81,7 @@
#include "G4ElementVector.hh"
#include "G4ProductionCutsTable.hh"
#include "G4ParticleChangeForLoss.hh"
#include "G4ParticleChangeForGamma.hh"
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
@@ -105,17 +107,18 @@ G4MuPairProductionModel::G4MuPairProductionModel(const G4ParticleDefinition* p,
lowestKinEnergy(1.*GeV),
factorForCross(4.*fine_structure_const*fine_structure_const
*classic_electr_radius*classic_electr_radius/(3.*pi)),
sqrte(sqrt(exp(1.))),
currentZ(0),
particle(0),
nzdat(5),
ntdat(8),
nbiny(1000),
nmaxElements(0),
ymin(-5.),
ymax(0.),
dy((ymax-ymin)/nbiny),
samplingTablesAreFilled(false)
sqrte(sqrt(exp(1.))),
currentZ(0),
particle(0),
nzdat(5),
ntdat(8),
nbiny(1000),
nmaxElements(0),
ymin(-5.),
ymax(0.),
dy((ymax-ymin)/nbiny),
ignoreCut(false),
samplingTablesAreFilled(false)
{
SetLowEnergyLimit(minPairEnergy);
@@ -153,14 +156,24 @@ void G4MuPairProductionModel::SetParticle(const G4ParticleDefinition* p)
void G4MuPairProductionModel::Initialise(const G4ParticleDefinition* p,
const G4DataVector&)
{
if(p) SetParticle(p);
if (!samplingTablesAreFilled) MakeSamplingTables();
if(pParticleChange)
fParticleChange = reinterpret_cast<G4ParticleChangeForLoss*>
(pParticleChange);
else
if (!samplingTablesAreFilled) {
if(p) SetParticle(p);
MakeSamplingTables();
}
if(pParticleChange) {
if(ignoreCut) {
gParticleChange =
reinterpret_cast<G4ParticleChangeForGamma*>(pParticleChange);
fParticleChange = 0;
} else {
fParticleChange =
reinterpret_cast<G4ParticleChangeForLoss*>(pParticleChange);
gParticleChange = 0;
}
} else {
fParticleChange = new G4ParticleChangeForLoss();
gParticleChange = 0;
}
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
@@ -172,7 +185,8 @@ G4double G4MuPairProductionModel::ComputeDEDXPerVolume(
G4double cutEnergy)
{
G4double dedx = 0.0;
if (cutEnergy <= minPairEnergy || kineticEnergy <= lowestKinEnergy)
if (cutEnergy <= minPairEnergy || kineticEnergy <= lowestKinEnergy
|| ignoreCut)
return dedx;
const G4ElementVector* theElementVector = material->GetElementVector();
@@ -193,8 +207,10 @@ G4double G4MuPairProductionModel::ComputeDEDXPerVolume(
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
G4double G4MuPairProductionModel::ComputMuPairLoss(G4double Z, G4double tkin,
G4double cutEnergy, G4double tmax)
G4double G4MuPairProductionModel::ComputMuPairLoss(G4double Z,
G4double tkin,
G4double cutEnergy,
G4double tmax)
{
SetCurrentElement(Z);
G4double loss = 0.0;
@@ -385,7 +401,9 @@ G4double G4MuPairProductionModel::ComputeCrossSectionPerAtom(
G4double cutEnergy,
G4double)
{
G4double cross = ComputeMicroscopicCrossSection (kineticEnergy, Z, cutEnergy);
G4double cut = max(minPairEnergy,cutEnergy);
if(ignoreCut) cut = minPairEnergy;
G4double cross = ComputeMicroscopicCrossSection (kineticEnergy, Z, cut);
return cross;
}
@@ -412,6 +430,7 @@ G4double G4MuPairProductionModel::CrossSectionPerVolume(
SetCurrentElement(Z);
G4double tmax = min(maxEnergy,MaxSecondaryEnergy(particle, kineticEnergy));
G4double cut = max(minPairEnergy,cutEnergy);
if(ignoreCut) cut = minPairEnergy;
if(cut < tmax) {
G4double cr = ComputeMicroscopicCrossSection(kineticEnergy, Z, cut)
- ComputeMicroscopicCrossSection(kineticEnergy, Z, tmax);
@@ -479,8 +498,8 @@ void G4MuPairProductionModel::SampleSecondaries(std::vector<G4DynamicParticle*>*
{
G4double kineticEnergy = aDynamicParticle->GetKineticEnergy();
G4double totalEnergy = kineticEnergy + particleMass ;
G4ParticleMomentum ParticleDirection = aDynamicParticle->
GetMomentumDirection();
G4ParticleMomentum ParticleDirection =
aDynamicParticle->GetMomentumDirection();
G4int it;
for(it=1; it<ntdat; it++) {if(kineticEnergy <= tdat[it]) break;}
@@ -491,13 +510,17 @@ void G4MuPairProductionModel::SampleSecondaries(std::vector<G4DynamicParticle*>*
const G4Element* anElement = SelectRandomAtom(kineticEnergy, dt, it, couple, tmin);
SetCurrentElement(anElement->GetZ());
// define interval of enegry transfer
G4double maxPairEnergy = MaxSecondaryEnergy(particle,kineticEnergy);
G4double maxEnergy = std::min(tmax, maxPairEnergy);
G4double minEnergy = std::max(tmin, minPairEnergy);
if(ignoreCut)minEnergy = minPairEnergy;
if(minEnergy >= maxEnergy) return;
//G4cout << "emin= " << minEnergy << " emax= " << maxEnergy
// << " minPair= " << minPairEnergy << " maxpair= " << maxPairEnergy
// << " ymin= " << ymin << " dy= " << dy << G4endl;
// select bins
G4int iymin = 0;
G4int iymax = nbiny-1;
if( minEnergy > minPairEnergy)
@@ -587,13 +610,17 @@ void G4MuPairProductionModel::SampleSecondaries(std::vector<G4DynamicParticle*>*
PositDirection.rotateUz(ParticleDirection);
// create G4DynamicParticle object for the particle2
G4DynamicParticle* aParticle2= new G4DynamicParticle(thePositron,
PositDirection,
PositronEnergy - electron_mass_c2);
G4DynamicParticle* aParticle2 =
new G4DynamicParticle(thePositron,
PositDirection,
PositronEnergy - electron_mass_c2);
// primary change
kineticEnergy -= (ElectronEnergy + PositronEnergy);
fParticleChange->SetProposedKineticEnergy(kineticEnergy);
if(fParticleChange)
fParticleChange->SetProposedKineticEnergy(kineticEnergy);
else
gParticleChange->SetProposedKineticEnergy(kineticEnergy);
vdp->push_back(aParticle1);
vdp->push_back(aParticle2);
@@ -627,6 +654,7 @@ const G4Element* G4MuPairProductionModel::SelectRandomAtom(
SetCurrentElement(Z);
G4double maxPairEnergy = MaxSecondaryEnergy(particle,kinEnergy);
G4double minEnergy = std::max(tmin, minPairEnergy);
if(ignoreCut)minEnergy = minPairEnergy;
G4int iz;
for(iz=1; iz<nzdat; iz++) {if(Z <= zdat[iz]) break;}