| Geant4 Cross Reference |
1 //
2 // ********************************************************************
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4 // * *
5 // * The Geant4 software is copyright of the Copyright Holders of *
6 // * the Geant4 Collaboration. It is provided under the terms and *
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14 // * regarding this software system or assume any liability for its *
15 // * use. Please see the license in the file LICENSE and URL above *
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18 // * This code implementation is the result of the scientific and *
19 // * technical work of the GEANT4 collaboration. *
20 // * By using, copying, modifying or distributing the software (or *
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24 // ********************************************************************
25 //
26 // This example is provided by the Geant4-DNA collaboration
27 // Any report or published results obtained using the Geant4-DNA software
28 // shall cite the following Geant4-DNA collaboration publications:
29 // Med. Phys. 45 (2018) e722-e739
30 // Phys. Med. 31 (2015) 861-874
31 // Med. Phys. 37 (2010) 4692-4708
32 // Int. J. Model. Simul. Sci. Comput. 1 (2010) 157–178
33 // The Geant4-DNA web site is available at http://geant4-dna.org
34 //
35 /// \file TrackerSD.cc
36 /// \brief Implementation of the TrackerSD class
37
38 #include "TrackerSD.hh"
39
40 #include "G4AnalysisManager.hh"
41 #include "G4SDManager.hh"
42 #include "G4SystemOfUnits.hh"
43 #include "Randomize.hh"
44
45 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
46
47 TrackerSD::TrackerSD(const G4String& name, const G4String& hitsCollectionName)
48 : G4VSensitiveDetector(name), fHitsCollection(nullptr)
49 {
50 collectionName.insert(hitsCollectionName);
51 }
52
53 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
54
55 TrackerSD::~TrackerSD() = default;
56
57 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
58
59 void TrackerSD::Initialize(G4HCofThisEvent* hce)
60 {
61 // Create hits collection
62 fHitsCollection = new TrackerHitsCollection(SensitiveDetectorName, collectionName[0]);
63
64 // Add this collection in hce
65 G4int hcID = G4SDManager::GetSDMpointer()->GetCollectionID(collectionName[0]);
66
67 hce->AddHitsCollection(hcID, fHitsCollection);
68 }
69
70 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
71
72 G4bool TrackerSD::ProcessHits(G4Step* aStep, G4TouchableHistory*)
73 {
74 // Energy deposit
75 G4double edep = aStep->GetTotalEnergyDeposit();
76
77 if (edep == 0.) return false;
78
79 auto newHit = new TrackerHit();
80
81 newHit->SetTrackID(aStep->GetTrack()->GetTrackID());
82 newHit->SetEdep(edep);
83 newHit->SetPos(aStep->GetPostStepPoint()->GetPosition());
84
85 if (aStep->GetTrack()->GetTrackID() == 1 && aStep->GetTrack()->GetParentID() == 0) {
86 newHit->SetIncidentEnergy(aStep->GetTrack()->GetVertexKineticEnergy());
87 }
88 fHitsCollection->insert(newHit);
89 // newHit->Print();
90
91 return true;
92 }
93
94 void TrackerSD::SetRadius(const G4double& value)
95 {
96 fRadius = value;
97 }
98
99 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
100
101 void TrackerSD::EndOfEvent(G4HCofThisEvent*)
102 {
103 G4int nofHits = fHitsCollection->entries();
104
105 G4double Einc = 0;
106
107 /*
108 G4cout << G4endl
109 << "-------->Hits Collection: in this event they are "
110 << nofHits
111 << " hits in the target volume " << G4endl;
112 */
113
114 // PROCESSING OF MICRODOSIMETRY Y & Z SPECTRA
115
116 // *************************************
117 // Please select herebelow :
118 // the radius of the target sphere:
119 // variable name = radius
120 // it is set to 5 nm by default)
121
122 G4double radius = fRadius;
123
124 //
125
126 //***************
127 // y and z
128 //***************
129
130 // Select random hit
131 G4int randHit = 0; // Runs from 0 to number of hits - 1
132 randHit = static_cast<G4int>(G4UniformRand() * nofHits);
133
134 /*
135 G4cout
136 << "======> random selection of hit number randHit ="
137 << randHit << G4endl;
138 */
139
140 // Get selected random hit position
141 G4ThreeVector hitPos = (*fHitsCollection)[randHit]->GetPos();
142 // G4cout << "======> random hit position x/nm =" << hitPos.x()/nm << G4endl;
143 // G4cout << "======> random hit position y/nm =" << hitPos.y()/nm << G4endl;
144 // G4cout << "======> random hit position z/nm =" << hitPos.z()/nm << G4endl;
145
146 // Set random position of center of sphere within radius
147 G4double chord = 4. * radius / 3;
148 G4double density = 1 * g / cm3;
149 G4double mass = (4. / 3) * CLHEP::pi * radius * radius * radius * density;
150
151 // Random placement of sphere: method 1
152 /*
153 G4ThreeVector randDir = G4RandomDirection();
154 G4double randRadius = G4UniformRand()*radius;
155 G4ThreeVector randCenterPos = randRadius*randDir + hitPos;
156 */
157
158 // Random placement of sphere: method 2
159
160 G4double xRand = 1.01 * radius;
161 G4double yRand = 1.01 * radius;
162 G4double zRand = 1.01 * radius;
163 G4double randRad = 1.01 * radius;
164 do {
165 xRand = (2 * G4UniformRand() - 1) * radius;
166 yRand = (2 * G4UniformRand() - 1) * radius;
167 zRand = (2 * G4UniformRand() - 1) * radius;
168 randRad = std::sqrt(xRand * xRand + yRand * yRand + zRand * zRand);
169 } while (randRad > radius);
170
171 G4ThreeVector randCenterPos(xRand + hitPos.x(), yRand + hitPos.y(), zRand + hitPos.z());
172
173 // Search for neighbouring hits in the sphere and cumulate deposited energy
174 // in epsilon
175 G4double epsilon = 0;
176 G4int nbEdep = 0;
177
178 for (G4int i = 0; i < nofHits; i++) {
179 if ((*fHitsCollection)[i]->GetIncidentEnergy() > 0)
180 Einc = (*fHitsCollection)[i]->GetIncidentEnergy();
181
182 G4ThreeVector localPos = (*fHitsCollection)[i]->GetPos();
183
184 // G4cout << i << " " << (*fHitsCollection)[i] << G4endl;
185 // G4cout << i << " " << (*fHitsCollection)[i]->GetEdep()/eV << G4endl;
186
187 if ((localPos.x() - randCenterPos.x()) * (localPos.x() - randCenterPos.x())
188 + (localPos.y() - randCenterPos.y()) * (localPos.y() - randCenterPos.y())
189 + (localPos.z() - randCenterPos.z()) * (localPos.z() - randCenterPos.z())
190 <= radius * radius)
191
192 {
193 epsilon = epsilon + (*fHitsCollection)[i]->GetEdep();
194 nbEdep = nbEdep + 1;
195 }
196 }
197
198 // For testing only
199 /*
200 G4cout << "======> for hit number #" << randHit <<
201 ", we collect "
202 << nbEdep << " energy depositions in a sphere of radius "
203 << radius/nm << " nm and mass "
204 << mass/kg << " kg for a total of "
205 << epsilon/eV << " eV or "
206 << (epsilon/joule)/(mass/kg) << " Gy" << G4endl;
207 G4cout << "-" << G4endl;
208 */
209
210 /*
211 FILE* myFile;
212 myFile=fopen("yz.txt","a");
213 fprintf(myFile,"%e %e %e\n",radius/nm,(epsilon/eV)/(chord/nm),
214 (epsilon/joule)/(mass/kg));
215 fclose(myFile);
216 */
217
218 // Get analysis manager
219 G4AnalysisManager* analysisManager = G4AnalysisManager::Instance();
220
221 // Fill ntuple including weighting
222 analysisManager->FillNtupleDColumn(0, radius / nm);
223 analysisManager->FillNtupleDColumn(2, nofHits);
224 analysisManager->FillNtupleDColumn(3, nbEdep);
225 analysisManager->FillNtupleDColumn(4, (epsilon / eV) / (chord / nm));
226 analysisManager->FillNtupleDColumn(5, (epsilon / mass) / gray);
227 analysisManager->FillNtupleDColumn(6, Einc / eV);
228 analysisManager->AddNtupleRow();
229 }
230
231 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
232