]>
Commit | Line | Data |
---|---|---|
676fb573 | 1 | // $Id$ |
2 | // Category: event | |
3 | // | |
4 | // See the class description in the header file. | |
5 | ||
6 | #include "AliTrackingAction.h" | |
7 | #include "AliTrackingActionMessenger.h" | |
9bcb6317 | 8 | #include "AliSensitiveDetector.h" |
676fb573 | 9 | #include "AliRun.h" |
10 | #include "AliGlobals.h" | |
11 | #include "TG4StepManager.h" | |
12 | ||
13 | #include <G4TrackingManager.hh> | |
14 | #include <G4Track.hh> | |
15 | #include <G4Event.hh> | |
16 | #include <G4SDManager.hh> | |
9bcb6317 | 17 | #include <G4VSensitiveDetector.hh> |
676fb573 | 18 | #include <G4VHitsCollection.hh> |
19 | ||
20 | #include <TParticle.h> | |
21 | ||
22 | // static data members | |
23 | AliTrackingAction* AliTrackingAction::fgInstance = 0; | |
24 | ||
25 | // static methods | |
26 | AliTrackingAction* AliTrackingAction::Instance() { | |
27 | // | |
28 | return fgInstance; | |
29 | } | |
30 | ||
31 | AliTrackingAction::AliTrackingAction() | |
32 | : fParticles(0), | |
33 | fPrimaryTrackID(0), | |
34 | fVerboseLevel(2), | |
35 | fSavePrimaries(true), | |
36 | fPrimariesCounter(0), | |
37 | fParticlesCounter(0), | |
38 | fLastParticleIndex(-1) | |
39 | { | |
40 | // | |
41 | if (fgInstance) { | |
42 | AliGlobals::Exception("AliTrackingAction constructed twice."); | |
43 | } | |
44 | ||
45 | fMessenger = new AliTrackingActionMessenger(this); | |
46 | fgInstance = this; | |
47 | } | |
48 | ||
49 | AliTrackingAction::AliTrackingAction(const AliTrackingAction& right) { | |
50 | // | |
51 | AliGlobals::Exception("AliTrackingAction is protected from copying."); | |
52 | } | |
53 | ||
54 | AliTrackingAction::~AliTrackingAction() { | |
55 | // | |
56 | delete fMessenger; | |
57 | } | |
58 | ||
59 | // operators | |
60 | ||
61 | AliTrackingAction& | |
62 | AliTrackingAction::operator=(const AliTrackingAction &right) | |
63 | { | |
64 | // check assignement to self | |
65 | if (this == &right) return *this; | |
66 | ||
67 | AliGlobals::Exception("AliTrackingAction is protected from assigning."); | |
68 | ||
69 | return *this; | |
70 | } | |
71 | ||
72 | // public methods | |
73 | ||
74 | void AliTrackingAction::PrepareNewEvent() | |
75 | { | |
76 | // Called by G4 kernel at the beginning of event. | |
77 | // --- | |
78 | ||
79 | // aliroot | |
80 | if (!fParticles) fParticles = gAlice->Particles(); | |
81 | ||
82 | // set the particles and primaries counter to the | |
83 | // number of tracks already stored in AliRun::fParticles | |
84 | // (fParticles can already contain primary particles | |
85 | // saved by AliGenerator) | |
86 | G4int nofTracks = gAlice->GetNtrack(); | |
87 | fPrimariesCounter = nofTracks; | |
88 | fParticlesCounter = nofTracks; | |
89 | fLastParticleIndex = nofTracks-1; | |
90 | ||
91 | // set g4 stepping manager pointer | |
92 | G4SteppingManager* pG4StepManager | |
93 | = fpTrackingManager->GetSteppingManager(); | |
94 | TG4StepManager* pStepManager = TG4StepManager::Instance(); | |
95 | pStepManager->SetSteppingManager(pG4StepManager); | |
96 | } | |
97 | ||
9bcb6317 | 98 | void AliTrackingAction::PreTrackingAction(const G4Track* aTrack) |
676fb573 | 99 | { |
100 | // Called by G4 kernel before starting tracking. | |
101 | // --- | |
102 | ||
103 | // aliroot | |
104 | // track index in the particles array | |
105 | G4int trackID = aTrack->GetTrackID(); | |
106 | G4int parentID = aTrack->GetParentID(); | |
107 | Int_t trackIndex; | |
108 | if (parentID==0) { | |
109 | trackIndex = trackID; | |
110 | } | |
111 | else { | |
112 | trackIndex = GetNofSavedTracks(); | |
113 | } | |
114 | ||
115 | // in AliRoot (from V3.0) track numbering starts from 0 | |
116 | gAlice->SetCurrentTrack(--trackIndex); | |
117 | ||
118 | if (parentID == 0) { | |
119 | // save primary track | |
120 | SaveAndDestroyTrack(); | |
121 | fPrimaryTrackID = aTrack->GetTrackID(); | |
122 | } | |
123 | else { | |
124 | // save secondary particles info | |
125 | // improve this later with retrieving the generation process | |
126 | // (primary particles are stored | |
127 | // by AlStackingAction in ClassifyNewTrack() method) | |
128 | G4String origin = "secondary"; | |
129 | SaveParticle(aTrack, origin); | |
9bcb6317 | 130 | } |
676fb573 | 131 | } |
132 | ||
9bcb6317 | 133 | void AliTrackingAction::PostTrackingAction(const G4Track* aTrack) |
676fb573 | 134 | { |
135 | // Called by G4 kernel after finishing tracking. | |
136 | // --- | |
137 | ||
138 | G4String particleName | |
139 | = aTrack->GetDynamicParticle()->GetDefinition()->GetParticleName(); | |
140 | if (particleName == "opticalphoton") { | |
141 | G4cout << "$$$ Track " << aTrack->GetTrackID() | |
5f1d09c5 | 142 | << " is optical photon." << G4endl; |
676fb573 | 143 | } |
144 | } | |
145 | ||
146 | void AliTrackingAction::SaveAndDestroyTrack() | |
147 | { | |
148 | // Calls AliRun::PurifyKine and fills trees of hits | |
149 | // after finishing tracking of each primary track. | |
150 | // !! This method has to be also called from AlEventAction::EndOfEventAction() | |
151 | // for storing the last primary track of the current event. | |
152 | // --- | |
153 | ||
154 | if (fPrimaryTrackID>0) | |
155 | { | |
156 | if (fVerboseLevel == 3) { | |
5f1d09c5 | 157 | G4cout << "$$$ Primary track " << fPrimaryTrackID << G4endl; |
676fb573 | 158 | } |
159 | else if ( fVerboseLevel == 2 && fPrimaryTrackID % 10 == 0 ) { | |
5f1d09c5 | 160 | G4cout << "$$$ Primary track " << fPrimaryTrackID << G4endl; |
676fb573 | 161 | } |
162 | else if ( fVerboseLevel == 1 && fPrimaryTrackID % 100 == 0 ) { | |
5f1d09c5 | 163 | G4cout << "$$$ Primary track " << fPrimaryTrackID << G4endl; |
676fb573 | 164 | } |
165 | ||
166 | // aliroot | |
167 | G4int lastSavedTrack | |
168 | = gAlice->PurifyKine(fLastParticleIndex, fParticlesCounter); | |
169 | G4int nofPuredSavedTracks | |
170 | = gAlice->GetNtrack(); | |
171 | fLastParticleIndex = lastSavedTrack; | |
172 | fParticlesCounter = nofPuredSavedTracks; | |
173 | ||
174 | if(gAlice->TreeH()) gAlice->TreeH()->Fill(); | |
175 | gAlice->ResetHits(); | |
176 | } | |
177 | else { | |
178 | fLastParticleIndex = fPrimariesCounter-1; | |
179 | } | |
180 | fPrimaryTrackID = 0; | |
181 | } | |
182 | ||
183 | void AliTrackingAction::SaveParticle(const G4Track* track, | |
184 | G4String processName) | |
185 | { | |
186 | // Converts G4track to TParticle and saves it in AliRun::fParticles | |
187 | // array. | |
188 | // ---- | |
189 | ||
190 | fParticlesCounter++; | |
191 | ||
192 | // track history | |
193 | G4int firstDaughter = -1; | |
194 | G4int lastDaughter = -1; | |
195 | G4int parentID = track->GetParentID(); | |
196 | G4int motherIndex1; | |
197 | G4int motherIndex2 = -1; | |
198 | if (parentID == 0) { | |
199 | motherIndex1 = -1; | |
200 | fPrimariesCounter++; | |
201 | } | |
202 | else { | |
203 | // set first/last child for already defined particles | |
204 | motherIndex1 = GetParticleIndex(parentID); | |
205 | // aliroot | |
206 | TParticle* parent | |
207 | = dynamic_cast<TParticle*>(fParticles->UncheckedAt(motherIndex1)); | |
208 | if (parent) { | |
209 | if (parent->GetFirstDaughter()<0) | |
210 | parent->SetFirstDaughter(fParticlesCounter); | |
211 | parent->SetLastDaughter(fParticlesCounter); | |
212 | } | |
213 | else { | |
214 | AliGlobals::Exception( | |
215 | "AliTrackingAction::SaveParticle: Unknown particle type"); | |
216 | } | |
217 | }; | |
218 | ||
219 | // ?? status of particle | |
220 | // temporarily used for storing trackID from G4 | |
221 | G4int ks = track->GetTrackID(); | |
222 | ||
223 | // particle type | |
224 | // is this G3 ekvivalent ?? - check | |
225 | G4int pdg = track->GetDefinition()->GetPDGEncoding(); | |
226 | ||
227 | // track kinematics | |
228 | G4ThreeVector momentum = track->GetMomentum(); | |
229 | G4double px = momentum.x()/GeV; | |
230 | G4double py = momentum.y()/GeV; | |
231 | G4double pz = momentum.z()/GeV; | |
232 | G4double e = track->GetTotalEnergy()/GeV; | |
233 | ||
234 | G4ThreeVector position = track->GetPosition(); | |
235 | G4double vx = position.x()/cm; | |
236 | G4double vy = position.y()/cm; | |
237 | G4double vz = position.z()/cm; | |
238 | // time of production - check if ekvivalent with G4 | |
239 | G4double t = track->GetGlobalTime(); | |
240 | ||
241 | G4ThreeVector polarization = track->GetPolarization(); | |
242 | G4double polX = polarization.x(); | |
243 | G4double polY = polarization.y(); | |
244 | G4double polZ = polarization.z(); | |
245 | ||
246 | // aliroot | |
247 | TClonesArray& theCollectionRef = *fParticles; | |
248 | G4int nofParticles = theCollectionRef.GetEntriesFast(); | |
249 | TParticle* particle | |
250 | = new(theCollectionRef[nofParticles]) | |
251 | TParticle(pdg, ks, motherIndex1, motherIndex1, | |
252 | firstDaughter, lastDaughter, px, py, pz, e, vx, vy, vz, t); | |
253 | particle->SetPolarisation(polX, polY, polZ); | |
b65f8990 | 254 | particle->SetBit(kKeepBit, false); |
676fb573 | 255 | } |
256 | ||
257 | G4int AliTrackingAction::GetParticleIndex(G4int trackID) | |
258 | { | |
259 | // Converts the trackID into the index of the particle | |
260 | // in AliRun::fParticles array. | |
261 | // --- | |
262 | ||
263 | if (trackID <= fPrimariesCounter) { | |
264 | return trackID-1; | |
265 | } | |
266 | else | |
267 | for (G4int i=fLastParticleIndex+1; i<fParticlesCounter; i++) { | |
268 | // aliroot | |
269 | TParticle* particle | |
270 | = (TParticle*)fParticles->UncheckedAt(i); | |
271 | if (trackID == particle->GetStatusCode()) return i; | |
272 | } | |
273 | ||
274 | AliGlobals::Exception("AliTrackingAction::GetParticleIndex() has failed."); | |
275 | return 0; | |
276 | } |