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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 1.4 2010-12-15 07:38:50 gunter Exp $
>> 28 // GEANT4 tag $Name: not supported by cvs2svn $
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 HepMC::FourVector mp0 = motherendvtx->position();
108 G4LorentzVector motherendpos(mp0.x(), mp 99 G4LorentzVector motherendpos(mp0.x(), mp0.y(), mp0.z(), mp0.t());
109 << 100
110 if (motherendpos.x() == prodpos.x() && m << 101 if( motherendpos.x() == prodpos.x() &&
111 && motherendpos.z() == prodpos.z()) << 102 motherendpos.y() == prodpos.y() &&
>> 103 motherendpos.z() == prodpos.z() ) // if yes, we attach the particle
112 { 104 {
113 motherendvtx->add_particle_out(particl 105 motherendvtx->add_particle_out(particle);
114 } 106 }
115 else // if not, we check whether the mo << 107 else // if not, we check whether the mother is biological or adopted
116 { << 108 {
117 if (!directParent) // adopted << 109 if(!directParent) // adopted
118 { << 110 {
119 G4bool found = false; 111 G4bool found = false;
120 112
121 // first check if any of the dummy p 113 // first check if any of the dummy particles
122 // has the end vertex at the right p 114 // has the end vertex at the right place
123 // 115 //
124 for (HepMC::GenVertex::particles_out << 116 for(HepMC::GenVertex::particles_out_const_iterator
125 motherendvtx->particles_out_c << 117 it=motherendvtx->particles_out_const_begin();
126 it != motherendvtx->particles_o << 118 it!=motherendvtx->particles_out_const_end();it++)
127 { 119 {
128 if ((*it)->pdg_id() == -999999) { << 120 if((*it)->pdg_id()==-999999)
>> 121 {
129 HepMC::FourVector dp0 = (*it)->e 122 HepMC::FourVector dp0 = (*it)->end_vertex()->position();
130 G4LorentzVector dummypos(dp0.x() << 123 G4LorentzVector dummypos(dp0.x(), dp0.y(), dp0.z(), dp0.t());;
131 ; << 124
132 << 125 if( dummypos.x() == prodpos.x() &&
133 if (dummypos.x() == prodpos.x() << 126 dummypos.y() == prodpos.y() &&
134 && dummypos.z() == prodpos.z << 127 dummypos.z() == prodpos.z() )
135 { 128 {
136 (*it)->end_vertex()->add_parti 129 (*it)->end_vertex()->add_particle_out(particle);
137 found = true; 130 found = true;
138 break; 131 break;
139 } 132 }
140 } 133 }
141 } 134 }
142 135
143 // and if not, create a dummy partic 136 // and if not, create a dummy particle connecting
144 // to the end vertex of the mother 137 // to the end vertex of the mother
145 // 138 //
146 if (!found) { << 139 if(!found)
>> 140 {
147 HepMC::GenVertex* childvtx = new H 141 HepMC::GenVertex* childvtx = new HepMC::GenVertex(prodpos);
148 childvtx->add_particle_out(particl 142 childvtx->add_particle_out(particle);
149 143
150 // the dummy vertex gets the barco 144 // the dummy vertex gets the barcode -500000
151 // minus the daughter particle bar 145 // minus the daughter particle barcode
152 // 146 //
153 childvtx->suggest_barcode(-500000 << 147 childvtx->suggest_barcode(-500000-partID);
154 fEvent->add_vertex(childvtx); << 148 event->add_vertex(childvtx);
155 << 149
156 HepMC::GenParticle* dummypart = ne << 150 HepMC::GenParticle* dummypart =
>> 151 new HepMC::GenParticle(G4LorentzVector(),-999999);
157 152
158 // the dummy particle gets the bar 153 // the dummy particle gets the barcode 500000
159 // plus the daughter particle barc 154 // plus the daughter particle barcode
160 // 155 //
161 dummypart->suggest_barcode(500000 << 156 dummypart->suggest_barcode(500000+partID);
162 childvtx->add_particle_in(dummypar 157 childvtx->add_particle_in(dummypart);
163 motherendvtx->add_particle_out(dum 158 motherendvtx->add_particle_out(dummypart);
164 } 159 }
165 } 160 }
166 else // biological << 161 else // biological
167 { 162 {
168 // in case mother was already 'split 163 // in case mother was already 'split' we need to look for
169 // the right 'segment' to add the ne 164 // the right 'segment' to add the new daugther.
170 // We use Time coordinate to locate 165 // We use Time coordinate to locate the place for the new vertex
171 166
172 G4int number_of_segments = fSegmenta << 167 G4int number_of_segments = segmentations[motherID];
173 G4int segment = 0; 168 G4int segment = 0;
174 169
175 // we loop through the segments 170 // we loop through the segments
176 // << 171 //
177 while (!((mother->end_vertex()->posi << 172 while ( !((mother->end_vertex()->position().t()>prodpos.t()) &&
178 && (mother->production_vert << 173 (mother->production_vertex()->position().t()<prodpos.t())) )
179 { 174 {
180 segment++; 175 segment++;
181 if (segment == number_of_segments) << 176 if (segment == number_of_segments)
182 G4cerr << "Problem!!!! Time coor 177 G4cerr << "Problem!!!! Time coordinates incompatible!" << G4endl;
183 << 178
184 mother = fEvent->barcode_to_partic << 179 mother = event->barcode_to_particle(segment*10000000 + motherID);
185 } 180 }
186 << 181
187 // now, we 'split' the appropriate ' 182 // now, we 'split' the appropriate 'segment' of the mother particle
188 // into two particles and create a n 183 // into two particles and create a new vertex
189 // 184 //
190 HepMC::GenVertex* childvtx = new Hep 185 HepMC::GenVertex* childvtx = new HepMC::GenVertex(prodpos);
191 childvtx->add_particle_out(particle) 186 childvtx->add_particle_out(particle);
192 fEvent->add_vertex(childvtx); << 187 event->add_vertex(childvtx);
193 188
194 // we first detach the mother from i 189 // we first detach the mother from its original vertex
195 // 190 //
196 HepMC::GenVertex* orig_mother_end_vt 191 HepMC::GenVertex* orig_mother_end_vtx = mother->end_vertex();
197 orig_mother_end_vtx->remove_particle 192 orig_mother_end_vtx->remove_particle(mother);
198 193
199 // and attach it to the new vertex 194 // and attach it to the new vertex
200 // 195 //
201 childvtx->add_particle_in(mother); 196 childvtx->add_particle_in(mother);
202 197
203 // now we create a new particle repr 198 // now we create a new particle representing the mother after
204 // interaction the barcode of the ne 199 // interaction the barcode of the new particle is 10000000 + the
205 // original barcode 200 // original barcode
206 // 201 //
207 HepMC::GenParticle* mothertwo = new 202 HepMC::GenParticle* mothertwo = new HepMC::GenParticle(*mother);
208 mothertwo->suggest_barcode(fSegmenta << 203 mothertwo->suggest_barcode(segmentations[motherID]*10000000
>> 204 + mother->barcode());
209 205
210 // we also reset the barcodes of the 206 // we also reset the barcodes of the vertices
211 // 207 //
212 orig_mother_end_vtx->suggest_barcode << 208 orig_mother_end_vtx->suggest_barcode(-segmentations[motherID]
213 << 209 *10000000 - mother->barcode());
214 childvtx->suggest_barcode(-mother->b 210 childvtx->suggest_barcode(-mother->barcode());
215 211
216 // we attach it to the new vertex wh 212 // we attach it to the new vertex where interaction took place
217 // 213 //
218 childvtx->add_particle_out(mothertwo 214 childvtx->add_particle_out(mothertwo);
219 215
220 // and we attach it to the original 216 // and we attach it to the original endvertex
221 // 217 //
222 orig_mother_end_vtx->add_particle_in 218 orig_mother_end_vtx->add_particle_in(mothertwo);
223 219
224 // and finally ... the increase the 220 // and finally ... the increase the 'segmentation counter'
225 // 221 //
226 fSegmentations[motherID] = fSegmenta << 222 segmentations[motherID] = segmentations[motherID]+1;
227 } 223 }
228 } 224 }
229 } 225 }
230 else << 226 else
231 // mother GenParticle is not there for som << 227 // mother GenParticle is not there for some reason...
232 // if this happens, we need to revise the << 228 // if this happens, we need to revise the philosophy...
233 // a solution would be to create HepMC par << 229 // a solution would be to create HepMC particles
234 // at the begining of each track << 230 // at the begining of each track
235 { 231 {
236 G4cerr << "barcode " << motherID << " mo << 232 G4cerr << "barcode " << motherID << " mother not there! "<< G4endl;
237 } 233 }
238 } 234 }
239 else // primary << 235 else // primary
240 { 236 {
241 HepMC::GenVertex* primaryvtx = new HepMC:: 237 HepMC::GenVertex* primaryvtx = new HepMC::GenVertex(prodpos);
242 primaryvtx->add_particle_out(particle); 238 primaryvtx->add_particle_out(particle);
243 fEvent->add_vertex(primaryvtx); << 239 event->add_vertex(primaryvtx);
244 240
245 // add id to the list of primaries 241 // add id to the list of primaries
246 // 242 //
247 fPrimarybarcodes.push_back(partID); << 243 primarybarcodes.push_back(partID);
248 } << 244 }
249 } 245 }
250 246
251 //....oooOO0OOooo........oooOO0OOooo........oo <<
252 <<
253 void MCTruthManager::PrintEvent() 247 void MCTruthManager::PrintEvent()
254 { 248 {
255 fEvent->print(); << 249 event->print();
256 250
257 // looping over primaries and print the deca 251 // looping over primaries and print the decay tree for each of them
258 // 252 //
259 for (std::vector<int>::const_iterator primar << 253 for(std::vector<int>::const_iterator primarybar=primarybarcodes.begin();
260 primarybar != fPrimarybarcodes.end(); p << 254 primarybar!=primarybarcodes.end();primarybar++)
261 { 255 {
262 PrintTree(fEvent->barcode_to_particle(*pri << 256 printTree(event->barcode_to_particle(*primarybar), " | ");
263 } 257 }
264 } 258 }
265 259
266 //....oooOO0OOooo........oooOO0OOooo........oo << 260 void MCTruthManager::printTree(HepMC::GenParticle* particle, G4String offset)
267 <<
268 void MCTruthManager::PrintTree(HepMC::GenParti <<
269 { 261 {
270 G4cout << offset << "--- barcode: " << part << 262 G4cout << offset << "--- barcode: " << particle->barcode() << " pdg: "
271 << " energy: " << particle->momentum( << 263 << particle->pdg_id() << " energy: " << particle->momentum().e()
272 << " production vertex: " << particle << 264 << " production vertex: "
273 << particle->production_vertex()->pos << 265 << particle->production_vertex()->position().x() << ", "
274 << particle->production_vertex()->pos << 266 << particle->production_vertex()->position().y() << ", "
275 << particle->production_vertex()->pos << 267 << particle->production_vertex()->position().z() << ", "
276 << 268 << particle->production_vertex()->position().t()
277 for (HepMC::GenVertex::particles_out_const_i << 269 << G4endl;
278 particle->end_vertex()->particles_out << 270
279 it != particle->end_vertex()->particles << 271 for(HepMC::GenVertex::particles_out_const_iterator
>> 272 it=particle->end_vertex()->particles_out_const_begin();
>> 273 it!=particle->end_vertex()->particles_out_const_end();
>> 274 it++)
280 { 275 {
281 G4String deltaoffset = ""; 276 G4String deltaoffset = "";
282 277
283 G4int curr = std::fmod(double((*it)->barco << 278 G4int curr = std::fmod(double((*it)->barcode()),10000000.);
284 G4int part = std::fmod(double(particle->ba << 279 G4int part = std::fmod(double(particle->barcode()),10000000.);
285 if (curr != part) { << 280 if( curr != part )
286 deltaoffset = " | "; << 281 {
287 } << 282 deltaoffset = " | ";
>> 283 }
288 284
289 PrintTree((*it), offset + deltaoffset); << 285 printTree((*it), offset + deltaoffset);
290 } << 286 }
291 } 287 }
292 <<
293 //....oooOO0OOooo........oooOO0OOooo........oo <<
294 288