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This commit is contained in:
Gabriele Cosmo
2016-06-09 15:58:43 +02:00
parent 96c8bcd0af
commit b79225fb37
7544 changed files with 245407 additions and 91099 deletions
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source/processes/electromagnetic/standard/src/G4UrbanMscModel.cc
+31 -39
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@@ -23,8 +23,8 @@
// * acceptance of all terms of the Geant4 Software license. *
// ********************************************************************
//
// $Id: G4UrbanMscModel.cc,v 1.77 2007/11/30 13:53:02 vnivanch Exp $
// GEANT4 tag $Name: geant4-09-01 $
// $Id: G4UrbanMscModel.cc,v 1.86 2008/10/29 14:15:30 vnivanch Exp $
// GEANT4 tag $Name: geant4-09-02 $
//
// -------------------------------------------------------------------
//
@@ -165,6 +165,7 @@
#include "G4UrbanMscModel.hh"
#include "Randomize.hh"
#include "G4Electron.hh"
#include "G4LossTableManager.hh"
#include "G4ParticleChangeForMSC.hh"
#include "G4TransportationManager.hh"
@@ -176,19 +177,8 @@
using namespace std;
G4UrbanMscModel::G4UrbanMscModel(G4double m_facrange, G4double m_dtrl,
G4double m_lambdalimit,
G4double m_facgeom,G4double m_skin,
G4bool m_samplez, G4MscStepLimitType m_stepAlg,
const G4String& nam)
: G4VEmModel(nam),
dtrl(m_dtrl),
lambdalimit(m_lambdalimit),
facrange(m_facrange),
facgeom(m_facgeom),
skin(m_skin),
steppingAlgorithm(m_stepAlg),
samplez(m_samplez),
G4UrbanMscModel::G4UrbanMscModel(const G4String& nam)
: G4VMscModel(nam),
isInitialized(false)
{
masslimite = 0.6*MeV;
@@ -200,7 +190,6 @@ G4UrbanMscModel::G4UrbanMscModel(G4double m_facrange, G4double m_dtrl,
currentTau = taulim;
tlimitminfix = 1.e-6*mm;
stepmin = tlimitminfix;
skindepth = skin*stepmin;
smallstep = 1.e10;
currentRange = 0. ;
frscaling2 = 0.25;
@@ -212,7 +201,6 @@ G4UrbanMscModel::G4UrbanMscModel(G4double m_facrange, G4double m_dtrl,
geommin = 1.e-3*mm;
geomlimit = geombig;
presafety = 0.*mm;
facsafety = 0.25;
Zeff = 1.;
particle = 0;
theManager = G4LossTableManager::Instance();
@@ -231,7 +219,9 @@ G4UrbanMscModel::~G4UrbanMscModel()
void G4UrbanMscModel::Initialise(const G4ParticleDefinition* p,
const G4DataVector&)
{
skindepth = skin*stepmin;
if(isInitialized) return;
// set values of some data members
SetParticle(p);
@@ -243,6 +233,8 @@ void G4UrbanMscModel::Initialise(const G4ParticleDefinition* p,
safetyHelper = G4TransportationManager::GetTransportationManager()
->GetSafetyHelper();
safetyHelper->InitialiseHelper();
isInitialized = true;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
@@ -390,14 +382,13 @@ G4double G4UrbanMscModel::ComputeCrossSectionPerAtom(
G4double eKineticEnergy = KineticEnergy;
if((particle->GetParticleName() != "e-") &&
(particle->GetParticleName() != "e+") )
if(mass > electron_mass_c2)
{
G4double TAU = KineticEnergy/mass ;
G4double c = mass*TAU*(TAU+2.)/(electron_mass_c2*(TAU+1.)) ;
G4double w = c-2. ;
G4double tau = 0.5*(w+sqrt(w*w+4.*c)) ;
eKineticEnergy = electron_mass_c2*tau ;
G4double TAU = KineticEnergy/mass ;
G4double c = mass*TAU*(TAU+2.)/(electron_mass_c2*(TAU+1.)) ;
G4double w = c-2. ;
G4double tau = 0.5*(w+sqrt(w*w+4.*c)) ;
eKineticEnergy = electron_mass_c2*tau ;
}
G4double ChargeSquare = charge*charge;
@@ -498,10 +489,11 @@ G4double G4UrbanMscModel::ComputeTruePathLengthLimit(
G4double currentMinimalStep)
{
tPathLength = currentMinimalStep;
G4int stepNumber = track.GetCurrentStepNumber();
const G4DynamicParticle* dp = track.GetDynamicParticle();
G4StepPoint* sp = track.GetStep()->GetPreStepPoint();
G4StepStatus stepStatus = sp->GetStepStatus();
if(stepNumber == 1) {
if(stepStatus == fUndefined) {
inside = false;
insideskin = false;
tlimit = geombig;
@@ -521,7 +513,6 @@ G4double G4UrbanMscModel::ComputeTruePathLengthLimit(
if(tPathLength > currentRange) tPathLength = currentRange;
G4StepPoint* sp = track.GetStep()->GetPreStepPoint();
presafety = sp->GetSafety();
// G4cout << "G4UrbanMscModel::ComputeTruePathLengthLimit tPathLength= "
@@ -535,8 +526,6 @@ G4double G4UrbanMscModel::ComputeTruePathLengthLimit(
return tPathLength;
}
G4StepStatus stepStatus = sp->GetStepStatus();
// standard version
//
if (steppingAlgorithm == fUseDistanceToBoundary)
@@ -554,9 +543,9 @@ G4double G4UrbanMscModel::ComputeTruePathLengthLimit(
smallstep += 1.;
insideskin = false;
if((stepStatus == fGeomBoundary) || (stepNumber == 1))
if((stepStatus == fGeomBoundary) || (stepStatus == fUndefined))
{
if(stepNumber == 1) smallstep = 1.e10;
if(stepStatus == fUndefined) smallstep = 1.e10;
else smallstep = 1.;
// facrange scaling in lambda
@@ -654,7 +643,7 @@ G4double G4UrbanMscModel::ComputeTruePathLengthLimit(
return tPathLength;
}
if((stepStatus == fGeomBoundary) || (stepNumber == 1))
if((stepStatus == fGeomBoundary) || (stepStatus == fUndefined))
{
// facrange scaling in lambda
// not so strong step restriction above lambdalimit
@@ -864,12 +853,13 @@ void G4UrbanMscModel::SampleScattering(const G4DynamicParticle* dynParticle,
G4double safety)
{
G4double kineticEnergy = dynParticle->GetKineticEnergy();
if((kineticEnergy <= 0.0) || (tPathLength <= tlimitminfix)) return;
if((kineticEnergy <= 0.0) || (tPathLength <= tlimitminfix) ||
(tPathLength/tausmall < lambda0) ) return;
G4double cth = SampleCosineTheta(tPathLength,kineticEnergy);
// protection against 'bad' cth values
if(cth > 1.) cth = 1.;
if(cth < -1.) cth = -1.;
if(abs(cth) > 1.) return;
G4double sth = sqrt((1.0 - cth)*(1.0 + cth));
G4double phi = twopi*G4UniformRand();
G4double dirx = sth*cos(phi);
@@ -898,11 +888,13 @@ void G4UrbanMscModel::SampleScattering(const G4DynamicParticle* dynParticle,
// sample direction of lateral displacement
// compute it from the lateral correlation
G4double Phi = 0.;
if(std::abs(r*sth) < latcorr)
if(std::abs(r*sth) < latcorr) {
Phi = twopi*G4UniformRand();
else
Phi = phi-std::acos(latcorr/(r*sth));
if(Phi < 0.) Phi += twopi;
} else {
G4double psi = std::acos(latcorr/(r*sth));
if(G4UniformRand() < 0.5) Phi = phi+psi;
else Phi = phi-psi;
}
dirx = std::cos(Phi);
diry = std::sin(Phi);