microyz/src/TrackerSD.cc

0001 //
0002 // ********************************************************************
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0024 // ********************************************************************
0025 //
0026 // This example is provided by the Geant4-DNA collaboration
0027 // Any report or published results obtained using the Geant4-DNA software
0028 // shall cite the following Geant4-DNA collaboration publications:
0029 // Med. Phys. 45 (2018) e722-e739
0030 // Phys. Med. 31 (2015) 861-874
0031 // Med. Phys. 37 (2010) 4692-4708
0032 // Int. J. Model. Simul. Sci. Comput. 1 (2010) 157–178
0033 // The Geant4-DNA web site is available at http://geant4-dna.org
0034 //
0035 /// \file TrackerSD.cc
0036 /// \brief Implementation of the TrackerSD class
0037
0038 #include "TrackerSD.hh"
0039
0040 #include "G4AnalysisManager.hh"
0041 #include "G4SDManager.hh"
0042 #include "G4SystemOfUnits.hh"
0043 #include "Randomize.hh"
0044
0045 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0046
0047 TrackerSD::TrackerSD(const G4String& name, const G4String& hitsCollectionName)
0048   : G4VSensitiveDetector(name), fHitsCollection(nullptr)
0049 {
0050   collectionName.insert(hitsCollectionName);
0051 }
0052
0053 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0054
0055 TrackerSD::~TrackerSD() = default;
0056
0057 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0058
0059 void TrackerSD::Initialize(G4HCofThisEvent* hce)
0060 {
0061   // Create hits collection
0062   fHitsCollection = new TrackerHitsCollection(SensitiveDetectorName, collectionName[0]);
0063
0064   // Add this collection in hce
0065   G4int hcID = G4SDManager::GetSDMpointer()->GetCollectionID(collectionName[0]);
0066
0067   hce->AddHitsCollection(hcID, fHitsCollection);
0068 }
0069
0070 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0071
0072 G4bool TrackerSD::ProcessHits(G4Step* aStep, G4TouchableHistory*)
0073 {
0074   // Energy deposit
0075   G4double edep = aStep->GetTotalEnergyDeposit();
0076
0077   if (edep == 0.) return false;
0078
0079   auto newHit = new TrackerHit();
0080
0081   newHit->SetTrackID(aStep->GetTrack()->GetTrackID());
0082   newHit->SetEdep(edep);
0083   newHit->SetPos(aStep->GetPostStepPoint()->GetPosition());
0084
0085   if (aStep->GetTrack()->GetTrackID() == 1 && aStep->GetTrack()->GetParentID() == 0) {
0086     newHit->SetIncidentEnergy(aStep->GetTrack()->GetVertexKineticEnergy());
0087   }
0088   fHitsCollection->insert(newHit);
0089   // newHit->Print();
0090
0091   return true;
0092 }
0093
0094 void TrackerSD::SetRadius(const G4double& value)
0095 {
0096   fRadius = value;
0097 }
0098
0099 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0100
0101 void TrackerSD::EndOfEvent(G4HCofThisEvent*)
0102 {
0103   G4int nofHits = fHitsCollection->entries();
0104
0105   G4double Einc = 0;
0106
0107   /*
0108   G4cout << G4endl
0109   << "-------->Hits Collection: in this event they are "
0110   << nofHits
0111   << " hits in the target volume " << G4endl;
0112   */
0113
0114   // PROCESSING OF MICRODOSIMETRY Y & Z SPECTRA
0115
0116   // *************************************
0117   // Please select herebelow :
0118   // the radius of the target sphere:
0119   // variable name = radius
0120   // it is set to 5 nm by default)
0121
0122   G4double radius = fRadius;
0123
0124   //
0125
0126   //***************
0127   // y and z
0128   //***************
0129
0130   // Select random hit
0131   G4int randHit = 0;  // Runs from 0 to number of hits - 1
0132   randHit = static_cast<G4int>(G4UniformRand() * nofHits);
0133
0134   /*
0135   G4cout
0136   << "======> random selection of hit number randHit ="
0137   << randHit << G4endl;
0138   */
0139
0140   // Get selected random hit position
0141   G4ThreeVector hitPos = (*fHitsCollection)[randHit]->GetPos();
0142   // G4cout << "======> random hit position x/nm =" << hitPos.x()/nm << G4endl;
0143   // G4cout << "======> random hit position y/nm =" << hitPos.y()/nm << G4endl;
0144   // G4cout << "======> random hit position z/nm =" << hitPos.z()/nm << G4endl;
0145
0146   // Set random position of center of sphere within radius
0147   G4double chord = 4. * radius / 3;
0148   G4double density = 1 * g / cm3;
0149   G4double mass = (4. / 3) * CLHEP::pi * radius * radius * radius * density;
0150
0151   // Random placement of sphere: method 1
0152   /*
0153   G4ThreeVector randDir = G4RandomDirection();
0154   G4double randRadius = G4UniformRand()*radius;
0155   G4ThreeVector randCenterPos = randRadius*randDir + hitPos;
0156   */
0157
0158   // Random placement of sphere: method 2
0159
0160   G4double xRand = 1.01 * radius;
0161   G4double yRand = 1.01 * radius;
0162   G4double zRand = 1.01 * radius;
0163   G4double randRad = 1.01 * radius;
0164   do {
0165     xRand = (2 * G4UniformRand() - 1) * radius;
0166     yRand = (2 * G4UniformRand() - 1) * radius;
0167     zRand = (2 * G4UniformRand() - 1) * radius;
0168     randRad = std::sqrt(xRand * xRand + yRand * yRand + zRand * zRand);
0169   } while (randRad > radius);
0170
0171   G4ThreeVector randCenterPos(xRand + hitPos.x(), yRand + hitPos.y(), zRand + hitPos.z());
0172
0173   // Search for neighbouring hits in the sphere and cumulate deposited energy
0174   //  in epsilon
0175   G4double epsilon = 0;
0176   G4int nbEdep = 0;
0177
0178   for (G4int i = 0; i < nofHits; i++) {
0179     if ((*fHitsCollection)[i]->GetIncidentEnergy() > 0)
0180       Einc = (*fHitsCollection)[i]->GetIncidentEnergy();
0181
0182     G4ThreeVector localPos = (*fHitsCollection)[i]->GetPos();
0183
0184     // G4cout << i << " " << (*fHitsCollection)[i] << G4endl;
0185     // G4cout << i << " " << (*fHitsCollection)[i]->GetEdep()/eV << G4endl;
0186
0187     if ((localPos.x() - randCenterPos.x()) * (localPos.x() - randCenterPos.x())
0188           + (localPos.y() - randCenterPos.y()) * (localPos.y() - randCenterPos.y())
0189           + (localPos.z() - randCenterPos.z()) * (localPos.z() - randCenterPos.z())
0190         <= radius * radius)
0191
0192     {
0193       epsilon = epsilon + (*fHitsCollection)[i]->GetEdep();
0194       nbEdep = nbEdep + 1;
0195     }
0196   }
0197
0198   // For testing only
0199   /*
0200   G4cout << "======> for hit number #" << randHit <<
0201   ", we collect "
0202   << nbEdep << " energy depositions in a sphere of radius "
0203   << radius/nm << " nm and mass "
0204   << mass/kg << " kg for a total of "
0205   << epsilon/eV << " eV or "
0206   << (epsilon/joule)/(mass/kg) << " Gy" << G4endl;
0207   G4cout << "-" << G4endl;
0208   */
0209
0210   /*
0211   FILE* myFile;
0212   myFile=fopen("yz.txt","a");
0213   fprintf(myFile,"%e %e %e\n",radius/nm,(epsilon/eV)/(chord/nm),
0214    (epsilon/joule)/(mass/kg));
0215   fclose(myFile);
0216   */
0217
0218   // Get analysis manager
0219   G4AnalysisManager* analysisManager = G4AnalysisManager::Instance();
0220
0221   // Fill ntuple including weighting
0222   analysisManager->FillNtupleDColumn(0, radius / nm);
0223   analysisManager->FillNtupleDColumn(2, nofHits);
0224   analysisManager->FillNtupleDColumn(3, nbEdep);
0225   analysisManager->FillNtupleDColumn(4, (epsilon / eV) / (chord / nm));
0226   analysisManager->FillNtupleDColumn(5, (epsilon / mass) / gray);
0227   analysisManager->FillNtupleDColumn(6, Einc / eV);
0228   analysisManager->AddNtupleRow();
0229 }
0230
0231 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......