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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/highenergy/src/G4GammaConversionToMuons.cc
+23 -14
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@@ -24,8 +24,8 @@
// ********************************************************************
//
//
// $Id: G4GammaConversionToMuons.cc,v 1.4 2006/06/29 19:32:40 gunter Exp $
// GEANT4 tag $Name: geant4-09-01 $
// $Id: G4GammaConversionToMuons.cc,v 1.7 2008/10/16 14:29:48 vnivanch Exp $
// GEANT4 tag $Name: geant4-09-02 $
//
// ------------ G4GammaConversionToMuons physics process ------
// by H.Burkhardt, S. Kelner and R. Kokoulin, April 2002
@@ -50,7 +50,9 @@ G4GammaConversionToMuons::G4GammaConversionToMuons(const G4String& processName,
LowestEnergyLimit (4*G4MuonPlus::MuonPlus()->GetPDGMass()), // 4*Mmuon
HighestEnergyLimit(1e21*eV), // ok to 1e21eV=1e12GeV, then LPM suppression
CrossSecFactor(1.)
{ }
{
SetProcessSubType(15);
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.....
@@ -260,9 +262,9 @@ G4VParticleChange* G4GammaConversionToMuons::PostStepDoIt(
if(W<1.) W=1.; // to avoid negative cross section at xmin
G4double xxp=1.-4./3.*xPM; // the main xPlus dependence
result=xxp*log(W)*LogWmaxInv;
if(result>1.)
{ G4cout << "error in dSigxPlusGen, result=" << result << " is >1" << '\n';
exit(10);
if(result>1.) {
G4cout << "G4GammaConversionToMuons::PostStepDoIt WARNING:"
<< " in dSigxPlusGen, result=" << result << " > 1" << G4endl;
}
}
while (G4UniformRand() > result);
@@ -284,9 +286,12 @@ G4VParticleChange* G4GammaConversionToMuons::PostStepDoIt(
{ t=G4UniformRand();
f1=(1.-2.*xPM+4.*xPM*t*(1.-t)) / (1.+C1/(t*t));
if(f1<0 || f1> f1_max) // should never happend
{ G4cout << "outside allowed range f1=" << f1 << G4endl;
exit(1);
}
{
G4cout << "G4GammaConversionToMuons::PostStepDoIt WARNING:"
<< "outside allowed range f1=" << f1 << " is set to zero"
<< G4endl;
f1 = 0.0;
}
}
while ( G4UniformRand()*f1_max > f1);
// generate psi by the rejection method
@@ -298,9 +303,12 @@ G4VParticleChange* G4GammaConversionToMuons::PostStepDoIt(
{ psi=2.*pi*G4UniformRand();
f2=1.-2.*xPM+4.*xPM*t*(1.-t)*(1.+cos(2.*psi));
if(f2<0 || f2> f2_max) // should never happend
{ G4cout << "outside allowed range f2=" << f2 << G4endl;
exit(1);
}
{
G4cout << "G4GammaConversionToMuons::PostStepDoIt WARNING:"
<< "outside allowed range f2=" << f2 << " is set to zero"
<< G4endl;
f2 = 0.0;
}
}
while ( G4UniformRand()*f2_max > f2);
@@ -386,9 +394,10 @@ G4Element* G4GammaConversionToMuons::SelectRandomAtom(
void G4GammaConversionToMuons::PrintInfoDefinition()
{
G4String comments ="gamma->mu+mu- Bethe Heitler process.\n";
G4String comments ="gamma->mu+mu- Bethe Heitler process, SubType= ";
G4cout << G4endl << GetProcessName() << ": " << comments
<< " good cross section parametrization from "
<< GetProcessSubType() << G4endl;
G4cout << " good cross section parametrization from "
<< G4BestUnit(LowestEnergyLimit,"Energy")
<< " to " << HighestEnergyLimit/GeV << " GeV for all Z." << G4endl;
}