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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" | |
4240c1e8 | 8 | #include "AliTrackInformation.h" |
676fb573 | 9 | #include "AliRun.h" |
10 | #include "AliGlobals.h" | |
11 | #include "TG4StepManager.h" | |
c8bc1274 | 12 | #include "TG4PhysicsManager.h" |
676fb573 | 13 | |
676fb573 | 14 | #include <G4Track.hh> |
4240c1e8 | 15 | #include <G4TrackVector.hh> |
16 | #include <G4VUserTrackInformation.hh> | |
17 | #include <G4TrackingManager.hh> | |
18 | #include <G4SteppingManager.hh> | |
676fb573 | 19 | |
676fb573 | 20 | // static data members |
21 | AliTrackingAction* AliTrackingAction::fgInstance = 0; | |
22 | ||
676fb573 | 23 | AliTrackingAction::AliTrackingAction() |
4240c1e8 | 24 | : fPrimaryTrackID(0), |
676fb573 | 25 | fVerboseLevel(2), |
26 | fSavePrimaries(true), | |
4240c1e8 | 27 | fTrackCounter(0) |
676fb573 | 28 | { |
29 | // | |
30 | if (fgInstance) { | |
31 | AliGlobals::Exception("AliTrackingAction constructed twice."); | |
32 | } | |
33 | ||
34 | fMessenger = new AliTrackingActionMessenger(this); | |
35 | fgInstance = this; | |
36 | } | |
37 | ||
38 | AliTrackingAction::AliTrackingAction(const AliTrackingAction& right) { | |
39 | // | |
40 | AliGlobals::Exception("AliTrackingAction is protected from copying."); | |
41 | } | |
42 | ||
43 | AliTrackingAction::~AliTrackingAction() { | |
44 | // | |
45 | delete fMessenger; | |
46 | } | |
47 | ||
48 | // operators | |
49 | ||
50 | AliTrackingAction& | |
51 | AliTrackingAction::operator=(const AliTrackingAction &right) | |
52 | { | |
53 | // check assignement to self | |
54 | if (this == &right) return *this; | |
55 | ||
56 | AliGlobals::Exception("AliTrackingAction is protected from assigning."); | |
57 | ||
58 | return *this; | |
59 | } | |
60 | ||
4240c1e8 | 61 | // private methods |
62 | ||
63 | AliTrackInformation* AliTrackingAction::GetTrackInformation( | |
64 | const G4Track* track, | |
65 | const G4String& method) const | |
66 | { | |
67 | // Returns user track information. | |
68 | // --- | |
69 | ||
70 | G4VUserTrackInformation* trackInfo = track->GetUserInformation(); | |
71 | if (!trackInfo) return 0; | |
72 | ||
73 | AliTrackInformation* aliTrackInfo | |
74 | = dynamic_cast<AliTrackInformation*>(trackInfo); | |
75 | if (!aliTrackInfo) { | |
76 | G4String text = "AliTrackingAction::" + method + ":\n"; | |
77 | text = text + " Unknown track information type"; | |
78 | AliGlobals::Exception(text); | |
79 | } | |
80 | ||
81 | return aliTrackInfo; | |
82 | } | |
83 | ||
676fb573 | 84 | // public methods |
85 | ||
86 | void AliTrackingAction::PrepareNewEvent() | |
87 | { | |
88 | // Called by G4 kernel at the beginning of event. | |
89 | // --- | |
90 | ||
3bfabcfc | 91 | fTrackCounter = 0; |
92 | ||
676fb573 | 93 | // set g4 stepping manager pointer |
4240c1e8 | 94 | TG4StepManager* stepManager = TG4StepManager::Instance(); |
95 | stepManager->SetSteppingManager(fpTrackingManager->GetSteppingManager()); | |
676fb573 | 96 | } |
97 | ||
9bcb6317 | 98 | void AliTrackingAction::PreTrackingAction(const G4Track* aTrack) |
676fb573 | 99 | { |
100 | // Called by G4 kernel before starting tracking. | |
101 | // --- | |
102 | ||
676fb573 | 103 | // track index in the particles array |
104 | G4int trackID = aTrack->GetTrackID(); | |
105 | G4int parentID = aTrack->GetParentID(); | |
106 | Int_t trackIndex; | |
107 | if (parentID==0) { | |
4240c1e8 | 108 | // in AliRoot (from V3.0) track numbering starts from 0 |
109 | trackIndex = trackID-1; | |
676fb573 | 110 | } |
111 | else { | |
4240c1e8 | 112 | trackIndex = gAlice->GetNtrack(); |
676fb573 | 113 | } |
4240c1e8 | 114 | |
115 | // set track index to track information | |
116 | AliTrackInformation* trackInfo | |
117 | = GetTrackInformation(aTrack, "PreTrackingAction"); | |
118 | if (!trackInfo) { | |
119 | // create track information and set it to G4Track | |
120 | // if it does not yet exist | |
121 | trackInfo = new AliTrackInformation(trackIndex); | |
122 | fpTrackingManager->SetUserTrackInformation(trackInfo); | |
123 | // the track information is deleted together with its | |
124 | // G4Track object | |
125 | } | |
126 | else | |
127 | trackInfo->SetTrackParticleID(trackIndex); | |
676fb573 | 128 | |
4240c1e8 | 129 | // set current track number |
130 | gAlice->SetCurrentTrack(trackIndex); | |
676fb573 | 131 | |
132 | if (parentID == 0) { | |
4240c1e8 | 133 | // finish previous primary track |
134 | FinishPrimaryTrack(); | |
676fb573 | 135 | fPrimaryTrackID = aTrack->GetTrackID(); |
887f9ee9 | 136 | |
137 | // begin this primary track | |
138 | gAlice->BeginPrimary(); | |
676fb573 | 139 | } |
140 | else { | |
141 | // save secondary particles info | |
4240c1e8 | 142 | SaveTrack(aTrack); |
9bcb6317 | 143 | } |
b17c5755 | 144 | |
4240c1e8 | 145 | // aliroot pre track actions |
b17c5755 | 146 | gAlice->PreTrack(); |
676fb573 | 147 | } |
148 | ||
9bcb6317 | 149 | void AliTrackingAction::PostTrackingAction(const G4Track* aTrack) |
676fb573 | 150 | { |
151 | // Called by G4 kernel after finishing tracking. | |
152 | // --- | |
153 | ||
3bfabcfc | 154 | fTrackCounter++; |
4240c1e8 | 155 | |
156 | // set parent track particle index to all secondary tracks | |
157 | G4TrackVector* secondaryTracks | |
158 | = fpTrackingManager->GetSteppingManager()->GetSecondary(); | |
159 | if (secondaryTracks){ | |
160 | G4int i; | |
ff849423 | 161 | for (i=0; i<secondaryTracks->size(); i++) { |
4240c1e8 | 162 | G4Track* track = (*secondaryTracks)[i]; |
163 | ||
164 | if (track->GetUserInformation()) { | |
165 | // this should never happen | |
166 | G4String text = "AliTrackingAction::PostTrackingAction:\n"; | |
167 | text = text + " Inconsistent track information."; | |
168 | AliGlobals::Exception(text); | |
169 | } | |
170 | ||
171 | // get parent track index | |
172 | AliTrackInformation* aliParentInfo | |
173 | = GetTrackInformation(aTrack, "PostTrackingAction"); | |
174 | G4int parentParticleID | |
175 | = aliParentInfo->GetTrackParticleID(); | |
176 | ||
177 | // create track information and set it to the G4Track | |
178 | AliTrackInformation* trackInfo | |
179 | = new AliTrackInformation(-1, parentParticleID); | |
180 | track->SetUserInformation(trackInfo); | |
181 | // the track information is deleted together with its | |
182 | // G4Track object | |
183 | } | |
184 | } | |
185 | ||
186 | // aliroot post track actions | |
b17c5755 | 187 | gAlice->PostTrack(); |
676fb573 | 188 | } |
189 | ||
4240c1e8 | 190 | void AliTrackingAction::FinishPrimaryTrack() |
676fb573 | 191 | { |
192 | // Calls AliRun::PurifyKine and fills trees of hits | |
193 | // after finishing tracking of each primary track. | |
194 | // !! This method has to be also called from AlEventAction::EndOfEventAction() | |
195 | // for storing the last primary track of the current event. | |
196 | // --- | |
197 | ||
4240c1e8 | 198 | if (fPrimaryTrackID>0) { |
199 | ||
200 | // verbose | |
201 | if (fVerboseLevel == 3) { | |
202 | G4cout << "$$$ Primary track " << fPrimaryTrackID << G4endl; | |
203 | } | |
204 | else if ( fVerboseLevel == 2 && fPrimaryTrackID % 10 == 0 ) { | |
205 | G4cout << "$$$ Primary track " << fPrimaryTrackID << G4endl; | |
206 | } | |
207 | else if ( fVerboseLevel == 1 && fPrimaryTrackID % 100 == 0 ) { | |
208 | G4cout << "$$$ Primary track " << fPrimaryTrackID << G4endl; | |
209 | } | |
210 | ||
211 | // aliroot finish primary track | |
212 | gAlice->FinishPrimary(); | |
213 | } | |
214 | fPrimaryTrackID = 0; | |
676fb573 | 215 | } |
216 | ||
4240c1e8 | 217 | void AliTrackingAction::SaveTrack(const G4Track* track) |
676fb573 | 218 | { |
4240c1e8 | 219 | // Get all needed parameters from G4track and pass them |
220 | // to AliRun::SetTrack() that creates corresponding TParticle | |
221 | // in the AliRun::fParticles array. | |
676fb573 | 222 | // ---- |
223 | ||
4240c1e8 | 224 | // parent particle index |
676fb573 | 225 | G4int parentID = track->GetParentID(); |
4240c1e8 | 226 | G4int motherIndex; |
676fb573 | 227 | if (parentID == 0) { |
4240c1e8 | 228 | motherIndex = -1; |
676fb573 | 229 | } |
230 | else { | |
4240c1e8 | 231 | motherIndex |
232 | = GetTrackInformation(track,"SaveTrack")->GetParentParticleID(); | |
233 | } | |
676fb573 | 234 | |
4240c1e8 | 235 | //G4cout << "SaveTrack: TrackID = " << track->GetTrackID() |
236 | // << " Parent ID = " << track->GetParentID() | |
237 | // << " Index = " << gAlice->CurrentTrack() | |
238 | // << " Parent Index = " << motherIndex | |
239 | // << G4endl; | |
240 | ||
241 | // PDG code | |
676fb573 | 242 | G4int pdg = track->GetDefinition()->GetPDGEncoding(); |
243 | ||
4240c1e8 | 244 | // track kinematics |
676fb573 | 245 | G4ThreeVector momentum = track->GetMomentum(); |
4240c1e8 | 246 | |
676fb573 | 247 | G4double px = momentum.x()/GeV; |
248 | G4double py = momentum.y()/GeV; | |
249 | G4double pz = momentum.z()/GeV; | |
250 | G4double e = track->GetTotalEnergy()/GeV; | |
251 | ||
252 | G4ThreeVector position = track->GetPosition(); | |
253 | G4double vx = position.x()/cm; | |
254 | G4double vy = position.y()/cm; | |
255 | G4double vz = position.z()/cm; | |
256 | // time of production - check if ekvivalent with G4 | |
257 | G4double t = track->GetGlobalTime(); | |
258 | ||
259 | G4ThreeVector polarization = track->GetPolarization(); | |
260 | G4double polX = polarization.x(); | |
261 | G4double polY = polarization.y(); | |
262 | G4double polZ = polarization.z(); | |
263 | ||
4240c1e8 | 264 | // production process |
c8bc1274 | 265 | AliMCProcess mcProcess; |
266 | const G4VProcess* kpProcess = track->GetCreatorProcess(); | |
267 | if (!kpProcess) { | |
268 | mcProcess = kPPrimary; | |
269 | } | |
270 | else { | |
271 | TG4PhysicsManager* pPhysicsManager = TG4PhysicsManager::Instance(); | |
20aace74 | 272 | mcProcess = pPhysicsManager->GetMCProcess(kpProcess); |
c8bc1274 | 273 | // distinguish kPDeltaRay from kPEnergyLoss |
274 | if (mcProcess == kPEnergyLoss) mcProcess = kPDeltaRay; | |
275 | } | |
4240c1e8 | 276 | |
277 | G4int ntr; | |
278 | // create particle | |
279 | gAlice->SetTrack(1, motherIndex, pdg, px, py, pz, e, vx, vy, vz, t, | |
280 | polX, polY, polZ, mcProcess, ntr); | |
281 | ||
676fb573 | 282 | } |
283 |