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geant4/source/processes/hadronic/cross_sections/src/G4CrossSectionDataStore.cc
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//
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//
// $Id: G4CrossSectionDataStore.cc,v 1.16 2009/01/24 11:54:47 vnivanch Exp $
// GEANT4 tag $Name: geant4-09-03 $
//
// -------------------------------------------------------------------
//
// GEANT4 Class file
//
//
// File name: G4CrossSectionDataStore
//
//
// Modifications:
// 23.01.2009 V.Ivanchenko add destruction of data sets
//
//
#include "G4CrossSectionDataStore.hh"
#include "G4HadronicException.hh"
#include "G4StableIsotopes.hh"
#include "G4HadTmpUtil.hh"
#include "Randomize.hh"
#include "G4Nucleus.hh"
G4CrossSectionDataStore::G4CrossSectionDataStore() :
NDataSetList(0), verboseLevel(0)
{}
G4CrossSectionDataStore::~G4CrossSectionDataStore()
{}
G4double
G4CrossSectionDataStore::GetCrossSection(const G4DynamicParticle* aParticle,
const G4Element* anElement,
G4double aTemperature)
{
if (NDataSetList == 0)
{
throw G4HadronicException(__FILE__, __LINE__,
"G4CrossSectionDataStore: no data sets registered");
return DBL_MIN;
}
for (G4int i = NDataSetList-1; i >= 0; i--) {
if (DataSetList[i]->IsApplicable(aParticle, anElement))
return DataSetList[i]->GetCrossSection(aParticle,anElement,aTemperature);
}
throw G4HadronicException(__FILE__, __LINE__,
"G4CrossSectionDataStore: no applicable data set found "
"for particle/element");
return DBL_MIN;
}
G4VCrossSectionDataSet*
G4CrossSectionDataStore::whichDataSetInCharge(const G4DynamicParticle* aParticle,
const G4Element* anElement)
{
if (NDataSetList == 0)
{
throw G4HadronicException(__FILE__, __LINE__,
"G4CrossSectionDataStore: no data sets registered");
return 0;
}
for (G4int i = NDataSetList-1; i >= 0; i--) {
if (DataSetList[i]->IsApplicable(aParticle, anElement) )
{
return DataSetList[i];
}
}
throw G4HadronicException(__FILE__, __LINE__,
"G4CrossSectionDataStore: no applicable data set found "
"for particle/element");
return 0;
}
G4double
G4CrossSectionDataStore::GetCrossSection(const G4DynamicParticle* aParticle,
const G4Isotope* anIsotope,
G4double aTemperature)
{
if (NDataSetList == 0)
{
throw G4HadronicException(__FILE__, __LINE__,
"G4CrossSectionDataStore: no data sets registered");
return DBL_MIN;
}
for (G4int i = NDataSetList-1; i >= 0; i--) {
if (DataSetList[i]->IsZAApplicable(aParticle, anIsotope->GetZ(), anIsotope->GetN()))
return DataSetList[i]->GetIsoCrossSection(aParticle,anIsotope,aTemperature);
}
throw G4HadronicException(__FILE__, __LINE__,
"G4CrossSectionDataStore: no applicable data set found "
"for particle/element");
return DBL_MIN;
}
G4double
G4CrossSectionDataStore::GetCrossSection(const G4DynamicParticle* aParticle,
G4double Z, G4double A,
G4double aTemperature)
{
if (NDataSetList == 0)
{
throw G4HadronicException(__FILE__, __LINE__,
"G4CrossSectionDataStore: no data sets registered");
return DBL_MIN;
}
for (G4int i = NDataSetList-1; i >= 0; i--) {
if (DataSetList[i]->IsZAApplicable(aParticle, Z, A))
return DataSetList[i]->GetIsoZACrossSection(aParticle,Z,A,aTemperature);
}
throw G4HadronicException(__FILE__, __LINE__,
"G4CrossSectionDataStore: no applicable data set found "
"for particle/element");
return DBL_MIN;
}
G4double
G4CrossSectionDataStore::GetCrossSection(const G4DynamicParticle* aParticle,
const G4Material* aMaterial)
{
G4double sigma(0);
G4double aTemp = aMaterial->GetTemperature();
G4int nElements = aMaterial->GetNumberOfElements();
const G4double* theAtomsPerVolumeVector = aMaterial->GetVecNbOfAtomsPerVolume();
G4double xSection(0);
for(G4int i=0; i<nElements; i++) {
xSection = GetCrossSection( aParticle, (*aMaterial->GetElementVector())[i], aTemp);
sigma += theAtomsPerVolumeVector[i] * xSection;
}
return sigma;
}
G4Element* G4CrossSectionDataStore::SampleZandA(const G4DynamicParticle* particle,
const G4Material* aMaterial,
G4Nucleus& target)
{
G4double aTemp = aMaterial->GetTemperature();
const G4int nElements = aMaterial->GetNumberOfElements();
const G4ElementVector* theElementVector = aMaterial->GetElementVector();
G4Element* anElement = (*theElementVector)[0];
G4VCrossSectionDataSet* inCharge;
G4int i;
// compounds
if(1 < nElements) {
G4double* xsec = new G4double [nElements];
const G4double* theAtomsPerVolumeVector = aMaterial->GetVecNbOfAtomsPerVolume();
G4double cross = 0.0;
for(i=0; i<nElements; i++) {
anElement= (*theElementVector)[i];
inCharge = whichDataSetInCharge(particle, anElement);
cross += theAtomsPerVolumeVector[i]*
inCharge->GetCrossSection(particle, anElement, aTemp);
xsec[i] = cross;
}
cross *= G4UniformRand();
for(i=0; i<nElements; i++) {
if( cross <= xsec[i] ) {
anElement = (*theElementVector)[i];
break;
}
}
delete [] xsec;
}
// element have been selected
inCharge = whichDataSetInCharge(particle, anElement);
G4double ZZ = anElement->GetZ();
G4double AA;
// Collect abundance weighted cross sections and A values for each isotope
// in each element
const G4int nIsoPerElement = anElement->GetNumberOfIsotopes();
// user-defined isotope abundances
if (0 < nIsoPerElement) {
G4IsotopeVector* isoVector = anElement->GetIsotopeVector();
AA = G4double((*isoVector)[0]->GetN());
if(1 < nIsoPerElement) {
G4double* xsec = new G4double [nIsoPerElement];
G4double iso_xs = 0.0;
G4double cross = 0.0;
G4double* abundVector = anElement->GetRelativeAbundanceVector();
G4bool elementXS = false;
for (i = 0; i<nIsoPerElement; i++) {
if (inCharge->IsZAApplicable(particle, ZZ, G4double((*isoVector)[i]->GetN()))) {
iso_xs = inCharge->GetIsoCrossSection(particle, (*isoVector)[i], aTemp);
} else if (elementXS == false) {
iso_xs = inCharge->GetCrossSection(particle, anElement, aTemp);
elementXS = true;
}
cross += abundVector[i]*iso_xs;
xsec[i] = cross;
}
cross *= G4UniformRand();
for (i = 0; i<nIsoPerElement; i++) {
if(cross <= xsec[i]) {
AA = G4double((*isoVector)[i]->GetN());
break;
}
}
delete [] xsec;
}
// natural abundances
} else {
G4StableIsotopes theDefaultIsotopes;
G4int Z = G4int(ZZ + 0.5);
const G4int nIso = theDefaultIsotopes.GetNumberOfIsotopes(Z);
G4int index = theDefaultIsotopes.GetFirstIsotope(Z);
AA = G4double(theDefaultIsotopes.GetIsotopeNucleonCount(index));
if(1 < nIso) {
G4double* xsec = new G4double [nIso];
G4double iso_xs = 0.0;
G4double cross = 0.0;
G4bool elementXS= false;
for (i = 0; i<nIso; i++) {
AA = G4double(theDefaultIsotopes.GetIsotopeNucleonCount(index+i));
if (inCharge->IsZAApplicable(particle, ZZ, AA )) {
iso_xs = inCharge->GetIsoZACrossSection(particle, ZZ, AA, aTemp);
} else if (elementXS == false) {
iso_xs = inCharge->GetCrossSection(particle, anElement, aTemp);
elementXS = true;
}
cross += theDefaultIsotopes.GetAbundance(index+i)*iso_xs;
xsec[i] = cross;
}
cross *= G4UniformRand();
for (i = 0; i<nIso; i++) {
if(cross <= xsec[i]) {
AA = G4double(theDefaultIsotopes.GetIsotopeNucleonCount(index+i));
break;
}
}
delete [] xsec;
}
}
//G4cout << "XS: " << particle->GetDefinition()->GetParticleName()
// << " e(GeV)= " << particle->GetKineticEnergy()/GeV
// << " in " << aMaterial->GetName()
// << " ZZ= " << ZZ << " AA= " << AA << " " << anElement->GetName() << G4endl;
target.SetParameters(AA, ZZ);
return anElement;
}
/*
G4Element* G4CrossSectionDataStore::SampleZandA(const G4DynamicParticle* particle,
const G4Material* aMaterial,
G4Nucleus& target)
{
static G4StableIsotopes theDefaultIsotopes; // natural abundances and
// stable isotopes
G4double aTemp = aMaterial->GetTemperature();
G4int nElements = aMaterial->GetNumberOfElements();
const G4ElementVector* theElementVector = aMaterial->GetElementVector();
const G4double* theAtomsPerVolumeVector = aMaterial->GetVecNbOfAtomsPerVolume();
std::vector<std::vector<G4double> > awicsPerElement;
std::vector<std::vector<G4double> > AvaluesPerElement;
G4Element* anElement;
// Collect abundance weighted cross sections and A values for each isotope
// in each element
for (G4int i = 0; i < nElements; i++) {
anElement = (*theElementVector)[i];
G4int nIsoPerElement = anElement->GetNumberOfIsotopes();
std::vector<G4double> isoholder;
std::vector<G4double> aholder;
G4double iso_xs = DBL_MIN;
if (nIsoPerElement) { // user-defined isotope abundances
G4IsotopeVector* isoVector = anElement->GetIsotopeVector();
G4double* abundVector = anElement->GetRelativeAbundanceVector();
G4VCrossSectionDataSet* inCharge = whichDataSetInCharge(particle, anElement);
G4bool elementXS = false;
for (G4int j = 0; j < nIsoPerElement; j++) {
if (inCharge->IsZAApplicable(particle, (*isoVector)[j]->GetZ(),
(*isoVector)[j]->GetN() ) ) {
iso_xs = inCharge->GetIsoCrossSection(particle, (*isoVector)[j], aTemp);
} else if (elementXS == false) {
iso_xs = inCharge->GetCrossSection(particle, anElement, aTemp);
elementXS = true;
}
isoholder.push_back(abundVector[j]*iso_xs);
aholder.push_back(G4double((*isoVector)[j]->GetN()));
}
} else { // natural abundances
G4int ZZ = G4lrint(anElement->GetZ());
nIsoPerElement = theDefaultIsotopes.GetNumberOfIsotopes(ZZ);
G4int index = theDefaultIsotopes.GetFirstIsotope(ZZ);
G4double AA;
G4double abundance;
G4VCrossSectionDataSet* inCharge = whichDataSetInCharge(particle, anElement);
G4bool elementXS = false;
for (G4int j = 0; j < nIsoPerElement; j++) {
AA = G4double(theDefaultIsotopes.GetIsotopeNucleonCount(index+j));
aholder.push_back(AA);
if (inCharge->IsZAApplicable(particle, G4double(ZZ), AA) ) {
iso_xs = inCharge->GetIsoZACrossSection(particle, G4double(ZZ), AA, aTemp);
} else if (elementXS == false) {
iso_xs = inCharge->GetCrossSection(particle, anElement, aTemp);
elementXS = true;
}
abundance = theDefaultIsotopes.GetAbundance(index+j)/100.0;
isoholder.push_back(abundance*iso_xs);
}
}
awicsPerElement.push_back(isoholder);
AvaluesPerElement.push_back(aholder);
}
// Calculate running sums for isotope selection
G4double crossSectionTotal = 0;
G4double xSectionPerElement;
std::vector<G4double> runningSum;
for (G4int i=0; i < nElements; i++) {
xSectionPerElement = 0;
for (G4int j=0; j < G4int(awicsPerElement[i].size()); j++)
xSectionPerElement += awicsPerElement[i][j];
runningSum.push_back(theAtomsPerVolumeVector[i]*xSectionPerElement);
crossSectionTotal += runningSum[i];
}
// Compare random number to running sum over element xc to choose Z
// Initialize Z and A to first element and first isotope in case
// cross section is zero
anElement = (*theElementVector)[0];
G4double ZZ = anElement->GetZ();
G4double AA = AvaluesPerElement[0][0];
if (crossSectionTotal != 0.) {
G4double random = G4UniformRand();
for(G4int i=0; i < nElements; i++) {
if(i!=0) runningSum[i] += runningSum[i-1];
if(random <= runningSum[i]/crossSectionTotal) {
anElement = (*theElementVector)[i];
ZZ = anElement->GetZ();
// Compare random number to running sum over isotope xc to choose A
G4int nIso = awicsPerElement[i].size();
G4double* running = new G4double[nIso];
for (G4int j=0; j < nIso; j++) {
running[j] = awicsPerElement[i][j];
if(j!=0) running[j] += running[j-1];
}
G4double trial = G4UniformRand();
for (G4int j=0; j < nIso; j++) {
AA = AvaluesPerElement[i][j];
if (trial <= running[j]/running[nIso-1]) break;
}
delete [] running;
break;
}
}
}
//G4cout << "XS: " << particle->GetDefinition()->GetParticleName()
// << " e(GeV)= " << particle->GetKineticEnergy()/GeV
// << " in " << aMaterial->GetName()
// << " ZZ= " << ZZ << " AA= " << AA << " " << anElement->GetName() << G4endl;
target.SetParameters(AA, ZZ);
return anElement;
}
std::pair<G4double, G4double>
G4CrossSectionDataStore::SelectRandomIsotope(const G4DynamicParticle* particle,
const G4Material* aMaterial)
{
static G4StableIsotopes theDefaultIsotopes; // natural abundances and
// stable isotopes
G4double aTemp = aMaterial->GetTemperature();
G4int nElements = aMaterial->GetNumberOfElements();
const G4ElementVector* theElementVector = aMaterial->GetElementVector();
const G4double* theAtomsPerVolumeVector = aMaterial->GetVecNbOfAtomsPerVolume();
std::vector<std::vector<G4double> > awicsPerElement;
std::vector<std::vector<G4double> > AvaluesPerElement;
G4Element* anElement;
// Collect abundance weighted cross sections and A values for each isotope
// in each element
for (G4int i = 0; i < nElements; i++) {
anElement = (*theElementVector)[i];
G4int nIsoPerElement = anElement->GetNumberOfIsotopes();
std::vector<G4double> isoholder;
std::vector<G4double> aholder;
G4double iso_xs = DBL_MIN;
if (nIsoPerElement) { // user-defined isotope abundances
G4IsotopeVector* isoVector = anElement->GetIsotopeVector();
G4double* abundVector = anElement->GetRelativeAbundanceVector();
G4VCrossSectionDataSet* inCharge = whichDataSetInCharge(particle, anElement);
G4bool elementXS = false;
for (G4int j = 0; j < nIsoPerElement; j++) {
if (inCharge->IsZAApplicable(particle, (*isoVector)[j]->GetZ(),
(*isoVector)[j]->GetN() ) ) {
iso_xs = inCharge->GetIsoCrossSection(particle, (*isoVector)[j], aTemp);
} else if (elementXS == false) {
iso_xs = inCharge->GetCrossSection(particle, anElement, aTemp);
elementXS = true;
}
isoholder.push_back(abundVector[j]*iso_xs);
aholder.push_back(G4double((*isoVector)[j]->GetN()));
}
} else { // natural abundances
G4int ZZ = G4lrint(anElement->GetZ());
nIsoPerElement = theDefaultIsotopes.GetNumberOfIsotopes(ZZ);
G4int index = theDefaultIsotopes.GetFirstIsotope(ZZ);
G4double AA;
G4double abundance;
G4VCrossSectionDataSet* inCharge = whichDataSetInCharge(particle, anElement);
G4bool elementXS = false;
for (G4int j = 0; j < nIsoPerElement; j++) {
AA = G4double(theDefaultIsotopes.GetIsotopeNucleonCount(index+j));
aholder.push_back(AA);
if (inCharge->IsZAApplicable(particle, G4double(ZZ), AA) ) {
iso_xs = inCharge->GetIsoZACrossSection(particle, G4double(ZZ), AA, aTemp);
} else if (elementXS == false) {
iso_xs = inCharge->GetCrossSection(particle, anElement, aTemp);
elementXS = true;
}
abundance = theDefaultIsotopes.GetAbundance(index+j)/100.0;
isoholder.push_back(abundance*iso_xs);
}
}
awicsPerElement.push_back(isoholder);
AvaluesPerElement.push_back(aholder);
}
// Calculate running sums for isotope selection
G4double crossSectionTotal = 0;
G4double xSectionPerElement;
std::vector<G4double> runningSum;
for (G4int i=0; i < nElements; i++) {
xSectionPerElement = 0;
for (G4int j=0; j < G4int(awicsPerElement[i].size()); j++)
xSectionPerElement += awicsPerElement[i][j];
runningSum.push_back(theAtomsPerVolumeVector[i]*xSectionPerElement);
crossSectionTotal += runningSum[i];
}
// Compare random number to running sum over element xc to choose Z
// Initialize Z and A to first element and first isotope in case
// cross section is zero
G4double ZZ = (*theElementVector)[0]->GetZ();
G4double AA = AvaluesPerElement[0][0];
if (crossSectionTotal != 0.) {
G4double random = G4UniformRand();
for(G4int i=0; i < nElements; i++) {
if(i!=0) runningSum[i] += runningSum[i-1];
if(random <= runningSum[i]/crossSectionTotal) {
ZZ = ((*theElementVector)[i])->GetZ();
// Compare random number to running sum over isotope xc to choose A
G4int nIso = awicsPerElement[i].size();
G4double* running = new G4double[nIso];
for (G4int j=0; j < nIso; j++) {
running[j] = awicsPerElement[i][j];
if(j!=0) running[j] += running[j-1];
}
G4double trial = G4UniformRand();
for (G4int j=0; j < nIso; j++) {
AA = AvaluesPerElement[i][j];
if (trial <= running[j]/running[nIso-1]) break;
}
delete [] running;
break;
}
}
}
return std::pair<G4double, G4double>(ZZ, AA);
}
*/
void
G4CrossSectionDataStore::AddDataSet(G4VCrossSectionDataSet* aDataSet)
{
DataSetList.push_back(aDataSet);
NDataSetList++;
}
void
G4CrossSectionDataStore::
BuildPhysicsTable(const G4ParticleDefinition& aParticleType)
{
if(NDataSetList > 0) {
for (G4int i=0; i<NDataSetList; i++) {
DataSetList[i]->BuildPhysicsTable(aParticleType);
}
}
}
void
G4CrossSectionDataStore::
DumpPhysicsTable(const G4ParticleDefinition& aParticleType)
{
if (NDataSetList == 0) {
G4cout << "WARNING - G4CrossSectionDataStore::DumpPhysicsTable: "
<< " no data sets registered"<<G4endl;
return;
}
for (G4int i = NDataSetList-1; i >= 0; i--) {
DataSetList[i]->DumpPhysicsTable(aParticleType);
}
}