Import Geant4 10.7.0.beta source tree
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Gabriele Cosmo
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//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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// Author: Zhuxin Li@CENBG
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// 11 March 2020
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// on the base of G4LivermoreGammaConversionModel
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// derives from G4BetheHeitler5DModel
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// -------------------------------------------------------------------
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#include "G4LivermoreGammaConversion5DModel.hh"
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#include "G4Electron.hh"
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#include "G4Positron.hh"
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#include "G4EmParameters.hh"
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#include "G4ParticleChangeForGamma.hh"
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#include "G4LPhysicsFreeVector.hh"
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#include "G4PhysicsLogVector.hh"
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#include "G4ProductionCutsTable.hh"
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#include "G4PhysicalConstants.hh"
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#include "G4SystemOfUnits.hh"
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#include "G4Exp.hh"
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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G4double G4LivermoreGammaConversion5DModel::lowEnergyLimit = 2.*CLHEP::electron_mass_c2;
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G4int G4LivermoreGammaConversion5DModel::verboseLevel = 0;
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constexpr G4int G4LivermoreGammaConversion5DModel::maxZ;
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G4LPhysicsFreeVector* G4LivermoreGammaConversion5DModel::data[] = {nullptr};
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G4LivermoreGammaConversion5DModel::G4LivermoreGammaConversion5DModel(const G4ParticleDefinition* p,
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const G4String& nam)
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: G4BetheHeitler5DModel(p, nam), fParticleChange(nullptr)
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{
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// Verbosity scale for debugging purposes:
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// 0 = nothing
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// 1 = calculation of cross sections, file openings...
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// 2 = entering in methods
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if(verboseLevel > 0)
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{
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G4cout << "G4LivermoreGammaConversion5DModel is constructed " << G4endl;
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}
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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G4LivermoreGammaConversion5DModel::~G4LivermoreGammaConversion5DModel()
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{
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if(IsMaster()) {
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for(G4int i=0; i<maxZ; ++i) {
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if(data[i]) {
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delete data[i];
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data[i] = nullptr;
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}
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}
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}
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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void
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G4LivermoreGammaConversion5DModel::Initialise( const G4ParticleDefinition* particle,
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const G4DataVector& cuts)
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{
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G4BetheHeitler5DModel::Initialise(particle, cuts);
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if (verboseLevel > 1)
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{
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G4cout << "Calling Initialise() of G4LivermoreGammaConversion5DModel."
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<< G4endl
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<< "Energy range: "
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<< LowEnergyLimit() / MeV << " MeV - "
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<< HighEnergyLimit() / GeV << " GeV isMater: " << IsMaster()
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<< G4endl;
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}
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if(!fParticleChange) {
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fParticleChange = GetParticleChangeForGamma();
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}
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if(IsMaster())
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{
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// Initialise element selector
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InitialiseElementSelectors(particle, cuts);
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// Access to elements
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char* path = std::getenv("G4LEDATA");
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G4ProductionCutsTable* theCoupleTable =
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G4ProductionCutsTable::GetProductionCutsTable();
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G4int numOfCouples = theCoupleTable->GetTableSize();
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for(G4int i=0; i<numOfCouples; ++i)
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{
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const G4MaterialCutsCouple* couple = theCoupleTable->GetMaterialCutsCouple(i);
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SetCurrentCouple(couple);
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const G4Material* mat = couple->GetMaterial();
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const G4ElementVector* theElementVector = mat->GetElementVector();
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G4int nelm = mat->GetNumberOfElements();
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for (G4int j=0; j<nelm; ++j)
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{
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G4int Z = std::max(1, std::min((*theElementVector)[j]->GetZasInt(), maxZ));
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if(!data[Z]) { ReadData(Z, path); }
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}
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}
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}
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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void G4LivermoreGammaConversion5DModel::ReadData(size_t Z, const char* path)
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{
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if (verboseLevel > 1)
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{
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G4cout << "Calling ReadData() of G4LivermoreGammaConversion5DModel"
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<< G4endl;
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}
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if(data[Z]) { return; }
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const char* datadir = path;
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if(!datadir)
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{
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datadir = std::getenv("G4LEDATA");
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if(!datadir)
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{
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G4Exception("G4LivermoreGammaConversion5DModel::ReadData()",
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"em0006",FatalException,
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"Environment variable G4LEDATA not defined");
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return;
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}
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}
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data[Z] = new G4LPhysicsFreeVector();
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std::ostringstream ost;
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ost << datadir << "/epics2017/pair/pp-cs-" << Z <<".dat";
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std::ifstream fin(ost.str().c_str());
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if( !fin.is_open())
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{
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G4ExceptionDescription ed;
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ed << "G4LivermoreGammaConversion5DModel data file <" << ost.str().c_str()
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<< "> is not opened!" << G4endl;
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G4Exception("G4LivermoreGammaConversion5DModel::ReadData()",
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"em0003",FatalException,
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ed,"G4LEDATA version should be G4EMLOW6.27 or later.");
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return;
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}
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else
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{
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if(verboseLevel > 1) { G4cout << "File " << ost.str()
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<< " is opened by G4LivermoreGammaConversion5DModel" << G4endl;}
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data[Z]->Retrieve(fin, true);
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}
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// Activation of linear interpolation
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data[Z]->SetSpline(false); // EPICS2017 has more points -> linear is fine
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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G4double
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G4LivermoreGammaConversion5DModel::ComputeCrossSectionPerAtom(
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const G4ParticleDefinition* particle, G4double GammaEnergy, G4double Z,
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G4double, G4double, G4double)
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{
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if (verboseLevel > 1)
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{
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G4cout << "G4LivermoreGammaConversion5DModel::ComputeCrossSectionPerAtom() Z= "
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<< Z << G4endl;
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}
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G4double xs = 0.0;
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if (GammaEnergy < lowEnergyLimit) { return xs; }
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G4int intZ = std::max(1, std::min(G4lrint(Z), maxZ));
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G4LPhysicsFreeVector* pv = data[intZ];
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// if element was not initialised
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// do initialisation safely for MT mode
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if(!pv)
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{
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InitialiseForElement(particle, intZ);
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pv = data[intZ];
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if(!pv) { return xs; }
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}
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// x-section is taken from the table
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xs = pv->Value(GammaEnergy);
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if(verboseLevel > 0)
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{
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G4cout << "*** Gamma conversion xs for Z=" << Z << " at energy E(MeV)="
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<< GammaEnergy/MeV << " cs=" << xs/millibarn << " mb" << G4endl;
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}
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return xs;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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#include "G4AutoLock.hh"
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namespace { G4Mutex LivermoreGammaConversion5DModelMutex = G4MUTEX_INITIALIZER; }
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void G4LivermoreGammaConversion5DModel::InitialiseForElement(
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const G4ParticleDefinition*,
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G4int Z)
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{
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G4AutoLock l(&LivermoreGammaConversion5DModelMutex);
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// G4cout << "G4LivermoreGammaConversion5DModel::InitialiseForElement Z= "
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// << Z << G4endl;
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if(!data[Z]) { ReadData(Z); }
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l.unlock();
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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