air_shower/src/UltraPrimaryGeneratorAction.cc

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0025 //
0026 //
0027 // --------------------------------------------------------------
0028 //                 GEANT 4 - ULTRA experiment example
0029 // --------------------------------------------------------------
0030 //
0031 // Code developed by:
0032 // B. Tome, M.C. Espirito-Santo, A. Trindade, P. Rodrigues
0033 //
0034 //    ****************************************************
0035 //    *      UltraPrimaryGeneratorAction.cc
0036 //    ****************************************************
0037 //
0038 //    Class used in the definition of the optical photons source
0039 //    A plane, circular source is used. Depending on the source position, optical
0040 //    photons may reach the UVscope directly or after reflection. By default direct
0041 //    incidence is used. The source parameters can be set directly in this class
0042 //    or through the GeneralParticleSource  messenger class.
0043 //
0044 #include "UltraPrimaryGeneratorAction.hh"
0045 #include "UltraDetectorConstruction.hh"
0046
0047 #include "G4PhysicalConstants.hh"
0048 #include "G4SystemOfUnits.hh"
0049 #include "G4RunManager.hh"
0050 #include "G4Event.hh"
0051 #include "G4GeneralParticleSource.hh"
0052 #include "G4SPSAngDistribution.hh"
0053 #include "G4SPSEneDistribution.hh"
0054 #include "G4SPSPosDistribution.hh"
0055 #include "G4ParticleTable.hh"
0056 #include "G4ParticleDefinition.hh"
0057 #include "G4ThreeVector.hh"
0058
0059 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
0060
0061 UltraPrimaryGeneratorAction::UltraPrimaryGeneratorAction()
0062 {
0063   particleGun = new G4GeneralParticleSource();
0064 }
0065
0066 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
0067
0068 UltraPrimaryGeneratorAction::~UltraPrimaryGeneratorAction()
0069 {
0070   delete particleGun;
0071 }
0072
0073 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
0074
0075 void UltraPrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
0076 {
0077
0078   auto iEvent = anEvent->GetEventID() ;
0079   if ( iEvent == 0 ){
0080
0081     G4cout << particleGun->GetParticleDefinition()->GetParticleName()           << " " ;
0082     G4cout << particleGun->GetCurrentSource()->GetEneDist()->GetEnergyDisType() << " " ;
0083     G4cout << particleGun->GetCurrentSource()->GetPosDist()->GetPosDisType()    << G4endl ;
0084
0085
0086 // Check if optical photon wavelength is within limits set for material optical properties tables.
0087   }
0088
0089   particleGun->GeneratePrimaryVertex(anEvent);
0090
0091     if (particleGun->GetParticleDefinition()->GetParticleName() == "opticalphoton"){
0092
0093         const UltraDetectorConstruction * detector =
0094         dynamic_cast<const UltraDetectorConstruction *>((G4RunManager::GetRunManager())->GetUserDetectorConstruction()) ;
0095
0096     auto lambda_min = detector->GetLambdaMin() ;
0097     auto lambda_max = detector->GetLambdaMax() ;
0098
0099   auto energy = particleGun->GetParticleEnergy() ;
0100
0101     if (h_Planck*c_light/energy > lambda_max || h_Planck*c_light/energy < lambda_min){
0102            G4cerr << "Error ! Optical photon energy (" << energy/eV << " eV) out of limits set by material optical properties tables. \n"
0103               << "Please check that photon wavelength is within the following interval: ["
0104               << lambda_min/nm << ","
0105               << lambda_max/nm << "] nm"
0106               << ", i.e., ["
0107               << h_Planck*c_light/lambda_max/eV << ","
0108               << h_Planck*c_light/lambda_min/eV << "] eV"
0109               << G4endl ;
0110
0111            G4Exception("UltraPrimaryGeneratorAction::GeneratePrimaries()","AirSh005",
0112                FatalException,"Wavelength outside the valid range") ;
0113     }
0114  }
0115
0116 }