Layer/src/SteppingAction.cc

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0025 //
0026 /// \file SteppingAction.cc
0027 /// \brief Implementation of the SteppingAction class
0028 //
0029 //
0030
0031 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0032 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0033
0034 #include "SteppingAction.hh"
0035
0036 #include "Run.hh"
0037
0038 #include "G4IonTable.hh"
0039 #include "G4LossTableManager.hh"
0040 #include "G4ParticleDefinition.hh"
0041 #include "G4ParticleTypes.hh"
0042 #include "G4Step.hh"
0043 #include "G4StepPoint.hh"
0044 #include "G4SystemOfUnits.hh"
0045 #include "G4TouchableHistory.hh"
0046 #include "G4Track.hh"
0047 #include "G4VPhysicalVolume.hh"
0048 #include "G4VSolid.hh"
0049 #include "G4VTouchable.hh"
0050
0051 const std::array<G4String, SteppingAction::fkNumberScoringVolumes>
0052   SteppingAction::fkArrayScoringVolumeNames = {"downstream", "side", "upstream"};
0053
0054 const std::array<G4String, SteppingAction::fkNumberKinematicRegions>
0055   SteppingAction::fkArrayKinematicRegionNames = {"", "below 20 MeV", "above 20 MeV"};
0056
0057 const std::array<G4String, SteppingAction::fkNumberParticleTypes>
0058   SteppingAction::fkArrayParticleTypeNames = {"all",      "electron",   "gamma",      "muon",
0059                                               "neutrino", "pion",       "neutron",    "proton",
0060                                               "ion",      "otherMeson", "otherBaryon"};
0061
0062 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0063
0064 G4int SteppingAction::GetIndex(const G4int iScoringVolume, const G4int iKinematicRegion,
0065                                const G4int iParticleType)
0066 {
0067   G4int index = -1;
0068   if (iScoringVolume >= 0 && iScoringVolume < fkNumberScoringVolumes && iKinematicRegion >= 0
0069       && iKinematicRegion < fkNumberKinematicRegions && iParticleType >= 0
0070       && iParticleType < fkNumberParticleTypes)
0071   {
0072     index = iScoringVolume * fkNumberKinematicRegions * fkNumberParticleTypes
0073             + iKinematicRegion * fkNumberParticleTypes + iParticleType;
0074   }
0075   if (index < 0 || index >= fkNumberCombinations) {
0076     G4cerr << "SteppingAction::GetIndex : WRONG index=" << index << "  set it to 0 !" << G4endl;
0077     index = 0;
0078   }
0079   return index;
0080 }
0081
0082 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0083
0084 SteppingAction::SteppingAction() : G4UserSteppingAction()
0085 {
0086   Initialize();
0087 }
0088
0089 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0090
0091 void SteppingAction::Initialize()
0092 {
0093   // Initialization needed at the beginning of each Run
0094   fPrimaryParticleId = 0;
0095   fPrimaryParticleEnergy = 0.0;
0096   fPrimaryParticleDirection = G4ThreeVector(0.0, 0.0, 1.0);
0097   fTargetMaterialName = "";
0098   fIsFirstStepOfTheEvent = true;
0099   fIsFirstStepInTarget = true;
0100   fIsFirstStepInScoringUpDown = true;
0101   fIsFirstStepInScoringSide = true;
0102   fCubicVolumeScoringUpDown = 1.0;
0103   fCubicVolumeScoringSide = 1.0;
0104   for (G4int i = 0; i < fkNumberCombinations; ++i) {
0105     fArraySumStepLengths[i] = 0.0;
0106   }
0107   /*
0108   for ( G4int i = 0; i < fkNumberCombinations; ++i ) fArraySumStepLengths[i] = 999.9;
0109   G4cout << " fkNumberCombinations=" << fkNumberCombinations << G4endl;
0110   for ( G4int i = 0; i < fkNumberScoringVolumes; ++i ) {
0111     for ( G4int j = 0; j < fkNumberKinematicRegions; ++j ) {
0112       for ( G4int k = 0; k < fkNumberParticleTypes; ++k ) {
0113         G4int index = GetIndex( i, j, k );
0114         G4cout << "(i, j, k)=(" << i << ", " << j << ", " << k << ")  ->" << index;
0115         if ( fArraySumStepLengths[ index ] < 1.0 ) G4cout << " <=== REPEATED!";
0116         else                                       fArraySumStepLengths[ index ] = 0.0;
0117         G4cout << G4endl;
0118       }
0119     }
0120   }
0121   for ( G4int i = 0; i < fkNumberCombinations; ++i ) {
0122     if ( fArraySumStepLengths[i] > 999.0 ) G4cout << " i=" << i << " NOT COVERED !" << G4endl;
0123   }
0124   */
0125 }
0126
0127 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0128
0129 void SteppingAction::UserSteppingAction(const G4Step* theStep)
0130 {
0131   // Get information on the primary particle
0132   if (fIsFirstStepOfTheEvent) {
0133     if (theStep->GetTrack()->GetParentID() == 0) {
0134       fPrimaryParticleId = theStep->GetTrack()->GetDefinition()->GetPDGEncoding();
0135       fPrimaryParticleEnergy = theStep->GetPreStepPoint()->GetKineticEnergy();
0136       fPrimaryParticleDirection = theStep->GetPreStepPoint()->GetMomentumDirection();
0137       if (fRunPtr) {
0138         fRunPtr->SetPrimaryParticleId(fPrimaryParticleId);
0139         fRunPtr->SetPrimaryParticleEnergy(fPrimaryParticleEnergy);
0140         fRunPtr->SetPrimaryParticleDirection(fPrimaryParticleDirection);
0141       }
0142       fIsFirstStepOfTheEvent = false;
0143     }
0144   }
0145   // Get information on the target material
0146   if (fIsFirstStepInTarget
0147       && theStep->GetPreStepPoint()->GetPhysicalVolume()->GetName() == "physiLayer")
0148   {
0149     fTargetMaterialName = theStep->GetPreStepPoint()->GetMaterial()->GetName();
0150     if (fRunPtr) fRunPtr->SetTargetMaterialName(fTargetMaterialName);
0151     fIsFirstStepInTarget = false;
0152   }
0153   // Get information on step lengths in the scoring volumes
0154   G4int iScoringVolume = -1;
0155   if (theStep->GetPreStepPoint()->GetPhysicalVolume()->GetName() == "physiScoringDownstream") {
0156     iScoringVolume = 0;
0157     if (fIsFirstStepInScoringUpDown) {
0158       fCubicVolumeScoringUpDown =
0159         theStep->GetTrack()->GetVolume()->GetLogicalVolume()->GetSolid()->GetCubicVolume();
0160       if (fRunPtr) fRunPtr->SetCubicVolumeScoringUpDown(fCubicVolumeScoringUpDown);
0161       fIsFirstStepInScoringUpDown = false;
0162     }
0163   }
0164   else if (theStep->GetPreStepPoint()->GetPhysicalVolume()->GetName() == "physiScoringSide") {
0165     iScoringVolume = 1;
0166     if (fIsFirstStepInScoringSide) {
0167       fCubicVolumeScoringSide =
0168         theStep->GetTrack()->GetVolume()->GetLogicalVolume()->GetSolid()->GetCubicVolume();
0169       if (fRunPtr) fRunPtr->SetCubicVolumeScoringSide(fCubicVolumeScoringSide);
0170       fIsFirstStepInScoringSide = false;
0171     }
0172   }
0173   else if (theStep->GetPreStepPoint()->GetPhysicalVolume()->GetName() == "physiScoringUpstream") {
0174     iScoringVolume = 2;
0175     if (fIsFirstStepInScoringUpDown) {
0176       fCubicVolumeScoringUpDown =
0177         theStep->GetTrack()->GetVolume()->GetLogicalVolume()->GetSolid()->GetCubicVolume();
0178       if (fRunPtr) fRunPtr->SetCubicVolumeScoringUpDown(fCubicVolumeScoringUpDown);
0179       fIsFirstStepInScoringUpDown = false;
0180     }
0181   }
0182   if (iScoringVolume >= 0) {
0183     // In the case of the upstream scoring volume, consider only particles whose direction
0184     // is opposite with respect to the primary particle (this is needed, in particular,
0185     // for avoiding to account the incoming, primary beam particle in the "upstream" fluence).
0186     if (iScoringVolume == 2
0187         && fPrimaryParticleDirection.dot(theStep->GetPreStepPoint()->GetMomentumDirection()) > 0.0)
0188     {
0189       return;
0190     }
0191     G4double stepLength = theStep->GetTrack()->GetStepLength() * theStep->GetTrack()->GetWeight();
0192     G4int absPdg = theStep->GetTrack()->GetDefinition() == nullptr
0193                      ? 0
0194                      : std::abs(theStep->GetTrack()->GetDefinition()->GetPDGEncoding());
0195     /*
0196     G4cout << std::setprecision(6)
0197            << theStep->GetTrack()->GetDefinition()->GetParticleName() << "  absPdg=" << absPdg
0198            << "  Ekin[MeV]=" << theStep->GetPreStepPoint()->GetKineticEnergy()
0199            << "  (rho,z)[mm]=(" << theStep->GetTrack()->GetPosition().perp()
0200            << "," << theStep->GetTrack()->GetPosition().z() << ")"
0201            << "  " << theStep->GetTrack()->GetVolume()->GetName()
0202            << "  " << theStep->GetTrack()->GetMaterial()->GetName()
0203            << "  L[mm]=" << stepLength << "  "
0204            << ( fPrimaryParticleDirection.dot(
0205                   theStep->GetPreStepPoint()->GetMomentumDirection() ) > 0.0
0206                 ? "forward" : "backward" )
0207            << G4endl;
0208     */
0209     // Three kinematical regions:  [0] : any value ;  [1] : below 20 MeV ;  [2] : above 20 MeV
0210     G4int iKinematicRegion = theStep->GetPreStepPoint()->GetKineticEnergy() < 20.0 ? 1 : 2;
0211     G4int iParticleType = -1;
0212     if (absPdg == 11)
0213       iParticleType = 1;  // electron (and positron)
0214     else if (absPdg == 22)
0215       iParticleType = 2;  // gamma
0216     else if (absPdg == 13)
0217       iParticleType = 3;  // muons (mu- and mu+)
0218     else if (absPdg == 12 || absPdg == 14 || absPdg == 16)
0219       iParticleType = 4;  // neutrinos
0220     //(and anti-neutrinos), all flavors
0221     else if (absPdg == 111 || absPdg == 211)
0222       iParticleType = 5;  // (charged) pions
0223     else if (absPdg == 2112)
0224       iParticleType = 6;  // neutron (and anti-neutron)
0225     else if (absPdg == 2212)
0226       iParticleType = 7;  // proton  (and anti-proton)
0227     else if (G4IonTable::IsIon(theStep->GetTrack()->GetDefinition()) ||  // ions (and anti-ions)
0228              G4IonTable::IsAntiIon(theStep->GetTrack()->GetDefinition()))
0229       iParticleType = 8;
0230     else if (absPdg < 1000)
0231       iParticleType = 9;  // other mesons (e.g. kaons) (Note: this works
0232                           //              in most cases, but not always!)
0233     else if (absPdg > 1000)
0234       iParticleType = 10;  // other baryons (e.g. hyperons, anti-hyperons,
0235                            // etc.)
0236     // Consider the specific case : scoring volume, kinematic region and particle type
0237     G4int index = GetIndex(iScoringVolume, iKinematicRegion, iParticleType);
0238     fArraySumStepLengths[index] += stepLength;
0239     // Consider the "all" particle case, with the same scoring volume and kinematic region
0240     index = GetIndex(iScoringVolume, iKinematicRegion, 0);
0241     fArraySumStepLengths[index] += stepLength;
0242     // Consider the "any" kinematic region case, with the same scoring volume and particle type
0243     index = GetIndex(iScoringVolume, 0, iParticleType);
0244     fArraySumStepLengths[index] += stepLength;
0245     // Consider the "any" kinematic region and "all" particle, with the same scoring volume
0246     index = GetIndex(iScoringVolume, 0, 0);
0247     fArraySumStepLengths[index] += stepLength;
0248     if (fRunPtr) fRunPtr->SetSteppingArray(fArraySumStepLengths);
0249   }
0250 }
0251
0252 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......