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26 /// \file eventgenerator/HepMC/MCTruth/src/MCT <<
27 /// \brief Implementation of the MCTruthManage <<
28 // <<
29 // 26 //
>> 27 // $Id: MCTruthManager.cc,v 1.2 2006/12/13 15:42:36 gunter Exp $
>> 28 // GEANT4 tag $Name: geant4-09-01 $
30 // 29 //
31 // 30 //
32 // ------------------------------------------- 31 // --------------------------------------------------------------
33 // GEANT 4 - MCTruthManager class 32 // GEANT 4 - MCTruthManager class
34 // ------------------------------------------- 33 // --------------------------------------------------------------
35 // 34 //
36 // Author: Witold POKORSKI (Witold.Pokorski@ce 35 // Author: Witold POKORSKI (Witold.Pokorski@cern.ch)
37 // 36 //
38 // ------------------------------------------- 37 // --------------------------------------------------------------
39 // <<
40 //....oooOO0OOooo........oooOO0OOooo........oo <<
41 38
42 #include "MCTruthManager.hh" 39 #include "MCTruthManager.hh"
43 40
44 //....oooOO0OOooo........oooOO0OOooo........oo <<
45 <<
46 static MCTruthManager* instance = 0; 41 static MCTruthManager* instance = 0;
47 42
48 //....oooOO0OOooo........oooOO0OOooo........oo << 43 MCTruthManager::MCTruthManager() : config(0)
49 << 44 {}
50 MCTruthManager::MCTruthManager() : fEvent(0), <<
51 45
52 //....oooOO0OOooo........oooOO0OOooo........oo << 46 MCTruthManager::~MCTruthManager()
53 << 47 {}
54 MCTruthManager::~MCTruthManager() {} <<
55 <<
56 //....oooOO0OOooo........oooOO0OOooo........oo <<
57 48
58 MCTruthManager* MCTruthManager::GetInstance() 49 MCTruthManager* MCTruthManager::GetInstance()
59 { 50 {
60 if (instance == 0) { << 51 if( instance == 0 )
>> 52 {
61 instance = new MCTruthManager(); 53 instance = new MCTruthManager();
62 } 54 }
63 return instance; 55 return instance;
64 } 56 }
65 57
66 //....oooOO0OOooo........oooOO0OOooo........oo <<
67 <<
68 void MCTruthManager::NewEvent() 58 void MCTruthManager::NewEvent()
69 { 59 {
70 // first delete the old event 60 // first delete the old event
71 delete fEvent; << 61 delete event;
72 // and now instaciate a new one 62 // and now instaciate a new one
73 fEvent = new HepMC::GenEvent(); << 63 event = new HepMC::GenEvent();
74 } 64 }
75 65
76 //....oooOO0OOooo........oooOO0OOooo........oo << 66 void MCTruthManager::AddParticle(G4LorentzVector& momentum,
77 << 67 G4LorentzVector& prodpos,
78 void MCTruthManager::AddParticle(G4LorentzVect << 68 G4LorentzVector& endpos,
79 G4LorentzVect << 69 G4int pdg_id, G4int partID, G4int motherID,
80 G4int motherI << 70 G4bool directParent)
81 { 71 {
82 // we create a new particle with barcode = p 72 // we create a new particle with barcode = partID
83 HepMC::GenParticle* particle = new HepMC::Ge 73 HepMC::GenParticle* particle = new HepMC::GenParticle(momentum, pdg_id);
84 particle->suggest_barcode(partID); 74 particle->suggest_barcode(partID);
85 // we initialize the 'segmentations' map 75 // we initialize the 'segmentations' map
86 // for the moment particle is not 'segmented << 76 // for the moment particle is not 'segmented'
87 fSegmentations[partID] = 1; << 77 segmentations[partID] = 1;
88 78
89 // we create the GenVertex corresponding to 79 // we create the GenVertex corresponding to the end point of the track
90 HepMC::GenVertex* endvertex = new HepMC::Gen 80 HepMC::GenVertex* endvertex = new HepMC::GenVertex(endpos);
91 << 81
92 // barcode of the endvertex = - barcode of t 82 // barcode of the endvertex = - barcode of the track
93 endvertex->suggest_barcode(-partID); 83 endvertex->suggest_barcode(-partID);
94 endvertex->add_particle_in(particle); 84 endvertex->add_particle_in(particle);
95 fEvent->add_vertex(endvertex); << 85 event->add_vertex(endvertex);
96 << 86
97 if (motherID) // not a primary << 87 if(motherID) // not a primary
98 { 88 {
99 // here we could try to improve speed by s << 89 // here we could try to improve speed by searching only through particles which
100 // belong to the given primary tree 90 // belong to the given primary tree
101 HepMC::GenParticle* mother = fEvent->barco << 91 HepMC::GenParticle* mother = event->barcode_to_particle(motherID);
102 // 92 //
103 if (mother) { << 93 if(mother)
>> 94 {
104 // we first check whether the mother's e 95 // we first check whether the mother's end vertex corresponds to the particle's
105 // production vertex 96 // production vertex
106 HepMC::GenVertex* motherendvtx = mother- 97 HepMC::GenVertex* motherendvtx = mother->end_vertex();
107 HepMC::FourVector mp0 = motherendvtx->po << 98 G4LorentzVector motherendpos = motherendvtx->position();
108 G4LorentzVector motherendpos(mp0.x(), mp << 99
109 << 100 if( motherendpos.x() == prodpos.x() &&
110 if (motherendpos.x() == prodpos.x() && m << 101 motherendpos.y() == prodpos.y() &&
111 && motherendpos.z() == prodpos.z()) << 102 motherendpos.z() == prodpos.z() ) // if yes, we attach the particle
112 { 103 {
113 motherendvtx->add_particle_out(particl 104 motherendvtx->add_particle_out(particle);
114 } 105 }
115 else // if not, we check whether the mo << 106 else // if not, we check whether the mother is biological or adopted
116 { << 107 {
117 if (!directParent) // adopted << 108 if(!directParent) // adopted
118 { << 109 {
119 G4bool found = false; 110 G4bool found = false;
120 111
121 // first check if any of the dummy p 112 // first check if any of the dummy particles
122 // has the end vertex at the right p 113 // has the end vertex at the right place
123 // 114 //
124 for (HepMC::GenVertex::particles_out << 115 for(HepMC::GenVertex::particles_out_const_iterator
125 motherendvtx->particles_out_c << 116 it=motherendvtx->particles_out_const_begin();
126 it != motherendvtx->particles_o << 117 it!=motherendvtx->particles_out_const_end();it++)
127 { 118 {
128 if ((*it)->pdg_id() == -999999) { << 119 if((*it)->pdg_id()==-999999)
129 HepMC::FourVector dp0 = (*it)->e << 120 {
130 G4LorentzVector dummypos(dp0.x() << 121 G4LorentzVector dummypos = (*it)->end_vertex()->position();
131 ; << 122
132 << 123 if( dummypos.x() == prodpos.x() &&
133 if (dummypos.x() == prodpos.x() << 124 dummypos.y() == prodpos.y() &&
134 && dummypos.z() == prodpos.z << 125 dummypos.z() == prodpos.z() )
135 { 126 {
136 (*it)->end_vertex()->add_parti 127 (*it)->end_vertex()->add_particle_out(particle);
137 found = true; 128 found = true;
138 break; 129 break;
139 } 130 }
140 } 131 }
141 } 132 }
142 133
143 // and if not, create a dummy partic 134 // and if not, create a dummy particle connecting
144 // to the end vertex of the mother 135 // to the end vertex of the mother
145 // 136 //
146 if (!found) { << 137 if(!found)
>> 138 {
147 HepMC::GenVertex* childvtx = new H 139 HepMC::GenVertex* childvtx = new HepMC::GenVertex(prodpos);
148 childvtx->add_particle_out(particl 140 childvtx->add_particle_out(particle);
149 141
150 // the dummy vertex gets the barco 142 // the dummy vertex gets the barcode -500000
151 // minus the daughter particle bar 143 // minus the daughter particle barcode
152 // 144 //
153 childvtx->suggest_barcode(-500000 << 145 childvtx->suggest_barcode(-500000-partID);
154 fEvent->add_vertex(childvtx); << 146 event->add_vertex(childvtx);
155 << 147
156 HepMC::GenParticle* dummypart = ne << 148 HepMC::GenParticle* dummypart =
>> 149 new HepMC::GenParticle(G4LorentzVector(),-999999);
157 150
158 // the dummy particle gets the bar 151 // the dummy particle gets the barcode 500000
159 // plus the daughter particle barc 152 // plus the daughter particle barcode
160 // 153 //
161 dummypart->suggest_barcode(500000 << 154 dummypart->suggest_barcode(500000+partID);
162 childvtx->add_particle_in(dummypar 155 childvtx->add_particle_in(dummypart);
163 motherendvtx->add_particle_out(dum 156 motherendvtx->add_particle_out(dummypart);
164 } 157 }
165 } 158 }
166 else // biological << 159 else // biological
167 { 160 {
168 // in case mother was already 'split 161 // in case mother was already 'split' we need to look for
169 // the right 'segment' to add the ne 162 // the right 'segment' to add the new daugther.
170 // We use Time coordinate to locate 163 // We use Time coordinate to locate the place for the new vertex
171 164
172 G4int number_of_segments = fSegmenta << 165 G4int number_of_segments = segmentations[motherID];
173 G4int segment = 0; 166 G4int segment = 0;
174 167
175 // we loop through the segments 168 // we loop through the segments
176 // << 169 //
177 while (!((mother->end_vertex()->posi << 170 while ( !((mother->end_vertex()->position().t()>prodpos.t()) &&
178 && (mother->production_vert << 171 (mother->production_vertex()->position().t()<prodpos.t())) )
179 { 172 {
180 segment++; 173 segment++;
181 if (segment == number_of_segments) << 174 if (segment == number_of_segments)
182 G4cerr << "Problem!!!! Time coor 175 G4cerr << "Problem!!!! Time coordinates incompatible!" << G4endl;
183 << 176
184 mother = fEvent->barcode_to_partic << 177 mother = event->barcode_to_particle(segment*10000000 + motherID);
185 } 178 }
186 << 179
187 // now, we 'split' the appropriate ' 180 // now, we 'split' the appropriate 'segment' of the mother particle
188 // into two particles and create a n 181 // into two particles and create a new vertex
189 // 182 //
190 HepMC::GenVertex* childvtx = new Hep 183 HepMC::GenVertex* childvtx = new HepMC::GenVertex(prodpos);
191 childvtx->add_particle_out(particle) 184 childvtx->add_particle_out(particle);
192 fEvent->add_vertex(childvtx); << 185 event->add_vertex(childvtx);
193 186
194 // we first detach the mother from i 187 // we first detach the mother from its original vertex
195 // 188 //
196 HepMC::GenVertex* orig_mother_end_vt 189 HepMC::GenVertex* orig_mother_end_vtx = mother->end_vertex();
197 orig_mother_end_vtx->remove_particle 190 orig_mother_end_vtx->remove_particle(mother);
198 191
199 // and attach it to the new vertex 192 // and attach it to the new vertex
200 // 193 //
201 childvtx->add_particle_in(mother); 194 childvtx->add_particle_in(mother);
202 195
203 // now we create a new particle repr 196 // now we create a new particle representing the mother after
204 // interaction the barcode of the ne 197 // interaction the barcode of the new particle is 10000000 + the
205 // original barcode 198 // original barcode
206 // 199 //
207 HepMC::GenParticle* mothertwo = new 200 HepMC::GenParticle* mothertwo = new HepMC::GenParticle(*mother);
208 mothertwo->suggest_barcode(fSegmenta << 201 mothertwo->suggest_barcode(segmentations[motherID]*10000000
>> 202 + mother->barcode());
209 203
210 // we also reset the barcodes of the 204 // we also reset the barcodes of the vertices
211 // 205 //
212 orig_mother_end_vtx->suggest_barcode << 206 orig_mother_end_vtx->suggest_barcode(-segmentations[motherID]
213 << 207 *10000000 - mother->barcode());
214 childvtx->suggest_barcode(-mother->b 208 childvtx->suggest_barcode(-mother->barcode());
215 209
216 // we attach it to the new vertex wh 210 // we attach it to the new vertex where interaction took place
217 // 211 //
218 childvtx->add_particle_out(mothertwo 212 childvtx->add_particle_out(mothertwo);
219 213
220 // and we attach it to the original 214 // and we attach it to the original endvertex
221 // 215 //
222 orig_mother_end_vtx->add_particle_in 216 orig_mother_end_vtx->add_particle_in(mothertwo);
223 217
224 // and finally ... the increase the 218 // and finally ... the increase the 'segmentation counter'
225 // 219 //
226 fSegmentations[motherID] = fSegmenta << 220 segmentations[motherID] = segmentations[motherID]+1;
227 } 221 }
228 } 222 }
229 } 223 }
230 else << 224 else
231 // mother GenParticle is not there for som << 225 // mother GenParticle is not there for some reason...
232 // if this happens, we need to revise the << 226 // if this happens, we need to revise the philosophy...
233 // a solution would be to create HepMC par << 227 // a solution would be to create HepMC particles
234 // at the begining of each track << 228 // at the begining of each track
235 { 229 {
236 G4cerr << "barcode " << motherID << " mo << 230 G4cerr << "barcode " << motherID << " mother not there! "<< G4endl;
237 } 231 }
238 } 232 }
239 else // primary << 233 else // primary
240 { 234 {
241 HepMC::GenVertex* primaryvtx = new HepMC:: 235 HepMC::GenVertex* primaryvtx = new HepMC::GenVertex(prodpos);
242 primaryvtx->add_particle_out(particle); 236 primaryvtx->add_particle_out(particle);
243 fEvent->add_vertex(primaryvtx); << 237 event->add_vertex(primaryvtx);
244 238
245 // add id to the list of primaries 239 // add id to the list of primaries
246 // 240 //
247 fPrimarybarcodes.push_back(partID); << 241 primarybarcodes.push_back(partID);
248 } << 242 }
249 } 243 }
250 244
251 //....oooOO0OOooo........oooOO0OOooo........oo <<
252 <<
253 void MCTruthManager::PrintEvent() 245 void MCTruthManager::PrintEvent()
254 { 246 {
255 fEvent->print(); << 247 event->print();
256 248
257 // looping over primaries and print the deca 249 // looping over primaries and print the decay tree for each of them
258 // 250 //
259 for (std::vector<int>::const_iterator primar << 251 for(std::vector<int>::const_iterator primarybar=primarybarcodes.begin();
260 primarybar != fPrimarybarcodes.end(); p << 252 primarybar!=primarybarcodes.end();primarybar++)
261 { 253 {
262 PrintTree(fEvent->barcode_to_particle(*pri << 254 printTree(event->barcode_to_particle(*primarybar), " | ");
263 } 255 }
264 } 256 }
265 257
266 //....oooOO0OOooo........oooOO0OOooo........oo << 258 void MCTruthManager::printTree(HepMC::GenParticle* particle, G4String offset)
267 <<
268 void MCTruthManager::PrintTree(HepMC::GenParti <<
269 { 259 {
270 G4cout << offset << "--- barcode: " << part << 260 G4cout << offset << "--- barcode: " << particle->barcode() << " pdg: "
271 << " energy: " << particle->momentum( << 261 << particle->pdg_id() << " energy: " << particle->momentum().e()
272 << " production vertex: " << particle << 262 << " production vertex: "<< particle->production_vertex()->position()
273 << particle->production_vertex()->pos << 263 << G4endl;
274 << particle->production_vertex()->pos << 264
275 << particle->production_vertex()->pos << 265 for(HepMC::GenVertex::particles_out_const_iterator
276 << 266 it=particle->end_vertex()->particles_out_const_begin();
277 for (HepMC::GenVertex::particles_out_const_i << 267 it!=particle->end_vertex()->particles_out_const_end();
278 particle->end_vertex()->particles_out << 268 it++)
279 it != particle->end_vertex()->particles <<
280 { 269 {
281 G4String deltaoffset = ""; 270 G4String deltaoffset = "";
282 271
283 G4int curr = std::fmod(double((*it)->barco << 272 if( std::fmod((*it)->barcode(),10000000) != std::fmod(particle->barcode(),10000000) )
284 G4int part = std::fmod(double(particle->ba << 273 {
285 if (curr != part) { << 274 deltaoffset = " | ";
286 deltaoffset = " | "; << 275 }
287 } <<
288 276
289 PrintTree((*it), offset + deltaoffset); << 277 printTree((*it), offset + deltaoffset);
290 } << 278 }
291 } 279 }
292 <<
293 //....oooOO0OOooo........oooOO0OOooo........oo <<
294 280