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This commit is contained in:
Gabriele Cosmo
2016-06-08 15:09:25 +02:00
parent b97f8d0df7
commit aaa409b6ee
2922 changed files with 55107 additions and 81674 deletions
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source/processes/electromagnetic/muons/src/G4MuIonisation.cc
+37 -40
View File
@@ -5,8 +5,8 @@
// based on the Program) you indicate your acceptance of this statement,
// and all its terms.
//
// $Id: G4MuIonisation.cc,v 2.6 1998/11/13 13:38:35 urban Exp $
// GEANT4 tag $Name: geant4-00 $
// $Id: G4MuIonisation.cc,v 1.3 1999/04/13 09:09:41 urban Exp $
// GEANT4 tag $Name: geant4-00-01 $
//
//
// --------------------------------------------------------------
@@ -30,6 +30,8 @@
#include "G4MuIonisation.hh"
#include "G4UnitsTable.hh"
#include "G4ios.hh"
// constructor and destructor
G4MuIonisation::G4MuIonisation(const G4String& processName)
@@ -37,11 +39,7 @@ G4MuIonisation::G4MuIonisation(const G4String& processName)
LowestKineticEnergy(1.00*keV),
HighestKineticEnergy(1000000.*TeV),
theMeanFreePathTable(NULL),
lastCutInRange(0.),
TotBin(100),
theElectron ( G4Electron::Electron() ),
theMuonPlus ( G4MuonPlus::MuonPlus() ),
theMuonMinus ( G4MuonMinus::MuonMinus() )
TotBin(100)
{ }
G4MuIonisation::~G4MuIonisation()
@@ -63,12 +61,9 @@ void G4MuIonisation::SetPhysicsTableBining(G4double lowE, G4double highE,
void G4MuIonisation::BuildPhysicsTable(const G4ParticleDefinition& aParticleType)
// just call BuildLossTable+BuildLambdaTable
{
BuildLossTable(aParticleType) ;
G4double Charge = aParticleType.GetPDGCharge();
CutInRange = aParticleType.GetLengthCuts();
BuildLossTable(aParticleType) ;
if(Charge>0.)
{
RecorderOfmuplusProcess[CounterOfmuplusProcess] = (*this).theLossTable ;
@@ -80,11 +75,9 @@ void G4MuIonisation::BuildPhysicsTable(const G4ParticleDefinition& aParticleType
CounterOfmuminusProcess++;
}
if(CutInRange != lastCutInRange)
{
lastCutInRange = CutInRange ;
G4double electronCutInRange = G4Electron::Electron()->GetCuts();
if(electronCutInRange != lastelectronCutInRange)
BuildLambdaTable(aParticleType) ;
}
G4MuEnergyLoss::BuildDEDXTable(aParticleType) ;
@@ -94,14 +87,7 @@ void G4MuIonisation::BuildPhysicsTable(const G4ParticleDefinition& aParticleType
void G4MuIonisation::BuildLossTable(const G4ParticleDefinition& aParticleType)
{
G4double Charge = aParticleType.GetPDGCharge() ;
if(Charge>0.)
ParticleCutInKineticEnergy = theMuonPlus->GetCutsInEnergy() ;
else
ParticleCutInKineticEnergy = theMuonMinus->GetCutsInEnergy() ;
DeltaCutInKineticEnergy = theElectron->GetCutsInEnergy() ;
DeltaCutInKineticEnergy = theElectron->GetCutsInEnergy() ;
G4double LowEdgeEnergy , ionloss ;
G4double RateMass ;
@@ -151,11 +137,9 @@ void G4MuIonisation::BuildLossTable(const G4ParticleDefinition& aParticleType)
material->GetAtomicNumDensityVector() ;
const G4int NumberOfElements=
material->GetNumberOfElements() ;
DeltaCutInKineticEnergyNow = DeltaCutInKineticEnergy[J] ;
G4double tau,tau0,Tmax,gamma,bg2,beta2,rcut,delta,x,sh ;
for (G4int i = 0 ; i < TotBin ; i++)
{
LowEdgeEnergy = aVector->GetLowEdgeEnergy(i) ;
@@ -248,7 +232,7 @@ void G4MuIonisation::BuildLossTable(const G4ParticleDefinition& aParticleType)
void G4MuIonisation::BuildLambdaTable(const G4ParticleDefinition& aParticleType)
{
// Build mean free path tables for the delta ray production process
G4double LowEdgeEnergy , Value ,sigma ;
G4double LowEdgeEnergy,Tmax , Value ,sigma ;
G4bool isOutRange ;
const G4MaterialTable* theMaterialTable=G4Material::GetMaterialTable();
@@ -263,7 +247,6 @@ void G4MuIonisation::BuildLambdaTable(const G4ParticleDefinition& aParticleType)
// get electron and particle cuts in kinetic energy
DeltaCutInKineticEnergy = theElectron->GetCutsInEnergy() ;
ParticleCutInKineticEnergy = aParticleType.GetEnergyCuts() ;
for (G4int J=0 ; J < numOfMaterials; J++)
{
@@ -282,13 +265,23 @@ void G4MuIonisation::BuildLambdaTable(const G4ParticleDefinition& aParticleType)
{
LowEdgeEnergy = aVector->GetLowEdgeEnergy(i) ;
sigma = 0. ;
for (G4int iel=0; iel<NumberOfElements; iel++ )
// check threshold here !
G4double Tmax = 2.*electron_mass_c2*LowEdgeEnergy*
(LowEdgeEnergy+2.*ParticleMass)/
(ParticleMass*ParticleMass+2.*electron_mass_c2*
(LowEdgeEnergy+ParticleMass)+
electron_mass_c2*electron_mass_c2) ;
if(Tmax > DeltaCutInKineticEnergyNow)
{
sigma += theAtomicNumDensityVector[iel]*
for (G4int iel=0; iel<NumberOfElements; iel++ )
{
sigma += theAtomicNumDensityVector[iel]*
ComputeMicroscopicCrossSection(aParticleType,
LowEdgeEnergy,
(*theElementVector)(iel)->GetZ() ) ;
}
}
Value = sigma<=0 ? DBL_MAX : 1./sigma ;
@@ -341,7 +334,6 @@ G4double G4MuIonisation::ComputeMicroscopicCrossSection(
}
}
}
return TotalCrossSection ;
}
@@ -430,10 +422,12 @@ G4VParticleChange* G4MuIonisation::PostStepDoIt(
(a0+log((2.*TotalEnergy-twoep)/ParticleMass)-
log(1.+twoep/electron_mass_c2)))
/grejc ;
} while( G4UniformRand()>grej );
}
DeltaKineticEnergy = x * MaxKineticEnergyTransfer ;
if(DeltaKineticEnergy <= 0.)
return G4VContinuousDiscreteProcess::PostStepDoIt(trackData,stepData);
@@ -467,15 +461,18 @@ G4VParticleChange* G4MuIonisation::PostStepDoIt(
finalKineticEnergy = KineticEnergy - DeltaKineticEnergy ;
if (finalKineticEnergy > 0. )
{
// changed energy and momentum of the actual particle
finalMomentum=sqrt(finalKineticEnergy*
(finalKineticEnergy+2.*ParticleMass)) ;
finalPx = (TotalMomentum*ParticleDirection.x()
-DeltaTotalMomentum*DeltaDirection.x())/finalMomentum ;
finalPy = (TotalMomentum*ParticleDirection.y()
-DeltaTotalMomentum*DeltaDirection.y())/finalMomentum ;
finalPz = (TotalMomentum*ParticleDirection.z()
-DeltaTotalMomentum*DeltaDirection.z())/finalMomentum ;
finalPx = TotalMomentum*ParticleDirection.x()
- DeltaTotalMomentum*DeltaDirection.x();
finalPy = TotalMomentum*ParticleDirection.y()
- DeltaTotalMomentum*DeltaDirection.y();
finalPz = TotalMomentum*ParticleDirection.z()
- DeltaTotalMomentum*DeltaDirection.z();
finalMomentum =
sqrt(finalPx*finalPx+finalPy*finalPy+finalPz*finalPz) ;
finalPx /= finalMomentum ;
finalPy /= finalMomentum ;
finalPz /= finalMomentum ;
aParticleChange.SetMomentumChange( finalPx,finalPy,finalPz );
}
else