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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/hadronic/cross_sections/src/G4BGGNucleonElasticXS.cc
+74 -72
View File
@@ -23,7 +23,6 @@
// * acceptance of all terms of the Geant4 Software license. *
// ********************************************************************
//
//
// -------------------------------------------------------------------
//
// GEANT4 Class file
@@ -43,16 +42,18 @@
#include "G4ComponentGGHadronNucleusXsc.hh"
#include "G4NucleonNuclearCrossSection.hh"
#include "G4HadronNucleonXsc.hh"
#include "G4NuclearRadii.hh"
#include "G4Proton.hh"
#include "G4Neutron.hh"
#include "G4NistManager.hh"
#include "G4Log.hh"
#include "G4Exp.hh"
#include "G4NuclearRadii.hh"
#include "G4CrossSectionDataSetRegistry.hh"
G4double G4BGGNucleonElasticXS::theGlauberFac[93] = {0.0};
G4double G4BGGNucleonElasticXS::theCoulombFac[93] = {0.0};
G4double G4BGGNucleonElasticXS::theGlauberFacP[93] = {0.0};
G4double G4BGGNucleonElasticXS::theCoulombFacP[93] = {0.0};
G4double G4BGGNucleonElasticXS::theGlauberFacN[93] = {0.0};
G4double G4BGGNucleonElasticXS::theCoulombFacN[93] = {0.0};
G4int G4BGGNucleonElasticXS::theA[93] = {0};
#ifdef G4MULTITHREADED
@@ -64,13 +65,13 @@ G4BGGNucleonElasticXS::G4BGGNucleonElasticXS(const G4ParticleDefinition* p)
{
verboseLevel = 0;
fGlauberEnergy = 91.*GeV;
fLowEnergy = 0.75*MeV;
fLowEnergy = 14.0*MeV;
fNucleon = nullptr;
fGlauber = nullptr;
fHadron = nullptr;
particle = p;
theProton= G4Proton::Proton();
isProton = (theProton == p) ? true : false;
isProton = (theProton == p);
isMaster = false;
SetForAllAtomsAndEnergies(true);
}
@@ -86,7 +87,7 @@ G4BGGNucleonElasticXS::~G4BGGNucleonElasticXS()
G4bool
G4BGGNucleonElasticXS::IsElementApplicable(const G4DynamicParticle*, G4int,
const G4Material*)
const G4Material*)
{
return true;
}
@@ -94,9 +95,9 @@ G4BGGNucleonElasticXS::IsElementApplicable(const G4DynamicParticle*, G4int,
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
G4bool G4BGGNucleonElasticXS::IsIsoApplicable(const G4DynamicParticle*,
G4int Z, G4int,
const G4Element*,
const G4Material*)
G4int Z, G4int,
const G4Element*,
const G4Material*)
{
return (1 == Z);
}
@@ -105,7 +106,7 @@ G4bool G4BGGNucleonElasticXS::IsIsoApplicable(const G4DynamicParticle*,
G4double
G4BGGNucleonElasticXS::GetElementCrossSection(const G4DynamicParticle* dp,
G4int ZZ, const G4Material*)
G4int ZZ, const G4Material*)
{
// this method should be called only for Z > 1
@@ -116,20 +117,22 @@ G4BGGNucleonElasticXS::GetElementCrossSection(const G4DynamicParticle* dp,
cross = 1.0115*GetIsoCrossSection(dp,1,1);
} else {
if(ekin <= fLowEnergy) {
cross = theCoulombFac[Z]*CoulombFactor(ekin, Z);
cross = (isProton) ? theCoulombFacP[Z] : theCoulombFacN[Z];
cross *= CoulombFactor(ekin, Z);
} else if(ekin > fGlauberEnergy) {
cross = theGlauberFac[Z]*fGlauber->GetElasticGlauberGribov(dp, Z, theA[Z]);
cross = (isProton) ? theGlauberFacP[Z] : theGlauberFacN[Z];
cross *= fGlauber->GetElasticGlauberGribov(dp, Z, theA[Z]);
} else {
cross = fNucleon->GetElasticCrossSection(dp, Z);
}
}
if(verboseLevel > 1) {
G4cout << "G4BGGNucleonElasticXS::GetElementCrossSection for "
<< dp->GetDefinition()->GetParticleName()
<< " Ekin(GeV)= " << dp->GetKineticEnergy()/CLHEP::GeV
<< " in nucleus Z= " << Z << " A= " << theA[Z]
<< " XS(b)= " << cross/barn
<< G4endl;
<< dp->GetDefinition()->GetParticleName()
<< " Ekin(GeV)= " << dp->GetKineticEnergy()/CLHEP::GeV
<< " in nucleus Z= " << Z << " A= " << theA[Z]
<< " XS(b)= " << cross/barn
<< G4endl;
}
return cross;
}
@@ -138,23 +141,23 @@ G4BGGNucleonElasticXS::GetElementCrossSection(const G4DynamicParticle* dp,
G4double
G4BGGNucleonElasticXS::GetIsoCrossSection(const G4DynamicParticle* dp,
G4int Z, G4int A,
const G4Isotope*,
const G4Element*,
const G4Material*)
G4int Z, G4int A,
const G4Isotope*,
const G4Element*,
const G4Material*)
{
// this method should be called only for Z = 1
fHadron->HadronNucleonXscNS(dp->GetDefinition(), theProton,
dp->GetKineticEnergy());
dp->GetKineticEnergy());
G4double cross = A*fHadron->GetElasticHadronNucleonXsc();
if(verboseLevel > 1) {
G4cout << "G4BGGNucleonElasticXS::GetIsoCrossSection for "
<< dp->GetDefinition()->GetParticleName()
<< " Ekin(GeV)= " << dp->GetKineticEnergy()/CLHEP::GeV
<< " in nucleus Z= " << Z << " A= " << A
<< " XS(b)= " << cross/barn
<< G4endl;
<< dp->GetDefinition()->GetParticleName()
<< " Ekin(GeV)= " << dp->GetKineticEnergy()/CLHEP::GeV
<< " in nucleus Z= " << Z << " A= " << A
<< " XS(b)= " << cross/barn
<< G4endl;
}
return cross;
}
@@ -163,26 +166,24 @@ G4BGGNucleonElasticXS::GetIsoCrossSection(const G4DynamicParticle* dp,
void G4BGGNucleonElasticXS::BuildPhysicsTable(const G4ParticleDefinition& p)
{
if(fNucleon) { return; }
if(&p == theProton || &p == G4Neutron::Neutron()) {
particle = &p;
isProton = (theProton == particle) ? true : false;
isProton = (theProton == &p);
} else {
G4ExceptionDescription ed;
ed << "This BGG cross section is applicable only to nucleons and not to "
<< p.GetParticleName() << G4endl;
G4Exception("G4BGGNucleonElasticXS::BuildPhysicsTable", "had001",
FatalException, ed);
FatalException, ed);
return;
}
if(!fNucleon) {
fNucleon = (G4NucleonNuclearCrossSection*)G4CrossSectionDataSetRegistry::Instance()->GetCrossSectionDataSet(G4NucleonNuclearCrossSection::Default_Name());
fGlauber = new G4ComponentGGHadronNucleusXsc();
fHadron = new G4HadronNucleonXsc();
}
fNucleon->BuildPhysicsTable(*particle);
fGlauber->BuildPhysicsTable(*particle);
fNucleon = new G4NucleonNuclearCrossSection();
fGlauber = new G4ComponentGGHadronNucleusXsc();
fHadron = new G4HadronNucleonXsc();
fNucleon->BuildPhysicsTable(p);
if(0 == theA[0]) {
#ifdef G4MULTITHREADED
@@ -194,45 +195,63 @@ void G4BGGNucleonElasticXS::BuildPhysicsTable(const G4ParticleDefinition& p)
}
G4MUTEXUNLOCK(&nucleonElasticXSMutex);
#endif
} else {
return;
}
if(isMaster && 0 == theA[0]) {
theA[0] = 1;
theA[0] = theA[1] = 1;
G4ThreeVector mom(0.0,0.0,1.0);
G4DynamicParticle dp(particle, mom, fGlauberEnergy);
G4DynamicParticle dp(theProton, mom, fGlauberEnergy);
G4NistManager* nist = G4NistManager::Instance();
G4double csup, csdn;
if(verboseLevel > 0) {
G4cout << "### G4BGGNucleonElasticXS::Initialise for "
<< particle->GetParticleName() << G4endl;
<< p.GetParticleName() << G4endl;
}
for(G4int iz=2; iz<93; iz++) {
for(G4int iz=2; iz<93; ++iz) {
G4int A = G4lrint(nist->GetAtomicMassAmu(iz));
theA[iz] = A;
csup = fGlauber->GetElasticGlauberGribov(&dp, iz, A);
csdn = fNucleon->GetElasticCrossSection(&dp, iz);
theGlauberFacP[iz] = csdn/csup;
}
dp.SetDefinition(G4Neutron::Neutron());
for(G4int iz=2; iz<93; ++iz) {
csup = fGlauber->GetElasticGlauberGribov(&dp, iz, theA[iz]);
csdn = fNucleon->GetElasticCrossSection(&dp, iz);
theGlauberFacN[iz] = csdn/csup;
theGlauberFac[iz] = csdn/csup;
if(verboseLevel > 0) {
G4cout << "Z= " << iz << " A= " << A
<< " factor= " << theGlauberFac[iz] << G4endl;
G4cout << "Z= " << iz << " A= " << theA[iz]
<< " GFactorP= " << theGlauberFacP[iz]
<< " GFactorN= " << theGlauberFacN[iz] << G4endl;
}
}
theCoulombFac[0] = theCoulombFac[1] = 1.0;
theCoulombFacP[0] = theCoulombFacP[1] =
theCoulombFacN[0] = theCoulombFacN[1] = 1.0;
dp.SetDefinition(theProton);
dp.SetKineticEnergy(fLowEnergy);
for(G4int iz=2; iz<93; ++iz) {
theCoulombFac[iz] =
fNucleon->GetElasticCrossSection(&dp, iz)/CoulombFactor(fLowEnergy, iz);
theCoulombFacP[iz] = fNucleon->GetElasticCrossSection(&dp, iz)
/CoulombFactor(fLowEnergy, iz);
}
dp.SetDefinition(G4Neutron::Neutron());
for(G4int iz=2; iz<93; ++iz) {
theCoulombFacN[iz] = fNucleon->GetElasticCrossSection(&dp, iz)
/CoulombFactor(fLowEnergy, iz);
if(verboseLevel > 0) {
G4cout << "Z= " << iz << " A= " << theA[iz]
<< " factor= " << theCoulombFac[iz] << G4endl;
G4cout << "Z= " << iz << " A= " << theA[iz]
<< " CFactorP= " << theCoulombFacP[iz]
<< " CFactorN= " << theCoulombFacN[iz] << G4endl;
}
}
}
@@ -243,26 +262,9 @@ void G4BGGNucleonElasticXS::BuildPhysicsTable(const G4ParticleDefinition& p)
G4double G4BGGNucleonElasticXS::CoulombFactor(G4double kinEnergy, G4int Z)
{
G4double res= 1.0;
// from G4ProtonInelasticCrossSection
if(isProton) {
if (Z <= 1) { return kinEnergy*kinEnergy; }
static const G4double llog10 = G4Log(10.);
G4double elog = G4Log(kinEnergy/GeV)/llog10;
G4double aa = theA[Z];
G4double ff1 = 5.6 - 0.016*aa; // slope of the drop at medium energies.
G4double ff2 = 1.37 + 1.37/aa; // start of the slope.
G4double ff3 = 0.8 + 18./aa - 0.002*aa; // stephight
res = 1.0 + ff3*(1.0 - (1.0/(1+G4Exp(-ff1*(elog + ff2)))));
ff1 = 8. - 8./aa - 0.008*aa; // slope of the rise
ff2 = 2.34 - 5.4/aa - 0.0028*aa; // start of the rise
res /= (1.0 + G4Exp(-ff1*(elog + ff2)));
}
res = G4NuclearRadii::CoulombFactor(Z, theA[Z], theProton, kinEnergy);
}
return res;
}