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25 // 22 //
26 // 23 //
>> 24 // $Id: G4FTFParticipants.cc,v 1.5 2005/06/04 13:47:01 jwellisc Exp $
>> 25 // GEANT4 tag $Name: geant4-07-01 $
27 // 26 //
28 <<
29 // ------------------------------------------- 27 // ------------------------------------------------------------
30 // GEANT 4 class implementation file 28 // GEANT 4 class implementation file
31 // 29 //
32 // ---------------- G4FTFParticipants---- 30 // ---------------- G4FTFParticipants----------------
33 // by Gunter Folger, June 1998. 31 // by Gunter Folger, June 1998.
34 // class finding colliding particles in 32 // class finding colliding particles in FTFPartonStringModel
35 // Changed in a part by V. Uzhinsky in oder t <<
36 // with original FRITIOF mode. November <<
37 // Ajusted for (anti) nucleus - nucleus inter <<
38 // (February 2011) <<
39 // ------------------------------------------- 33 // ------------------------------------------------------------
40 34
41 #include <utility> <<
42 #include <vector> <<
43 #include <algorithm> <<
44 <<
45 #include "G4FTFParticipants.hh" 35 #include "G4FTFParticipants.hh"
46 #include "G4ios.hh" <<
47 #include "Randomize.hh" <<
48 #include "G4SystemOfUnits.hh" <<
49 #include "G4FTFParameters.hh" <<
50 #include "G4DiffractiveSplitableHadron.hh" 36 #include "G4DiffractiveSplitableHadron.hh"
51 #include "G4VSplitableHadron.hh" 37 #include "G4VSplitableHadron.hh"
52 #include "G4PhysicalConstants.hh" << 38 #include "G4PomeronCrossSection.hh"
53 << 39 #include "Randomize.hh"
54 << 40 #include <utility>
55 //============================================ <<
56 <<
57 //#define debugFTFparticipant <<
58 <<
59 <<
60 //============================================ <<
61 <<
62 G4FTFParticipants::G4FTFParticipants() : Bimpa <<
63 Bmin2 <<
64 curre <<
65 {} <<
66 <<
67 <<
68 //============================================ <<
69 <<
70 G4FTFParticipants::~G4FTFParticipants() {} <<
71 <<
72 //============================================ <<
73 <<
74 void G4FTFParticipants::GetList( const G4React <<
75 G4FTFParamete <<
76 <<
77 #ifdef debugFTFparticipant <<
78 G4cout << "Participants::GetList" << G4endl <<
79 << "thePrimary " << thePrimary.GetMom <<
80 #endif <<
81 <<
82 G4double betta_z = thePrimary.GetMomentum(). <<
83 if ( betta_z < 1.0e-10 ) betta_z = 1.0e-10; <<
84 <<
85 StartLoop(); // reset Loop over Interactions <<
86 <<
87 for ( unsigned int i = 0; i < theInteraction <<
88 theInteractions.clear(); <<
89 <<
90 G4double deltaxy = 2.0 * fermi; // Extra nu <<
91 <<
92 if ( theProjectileNucleus == nullptr ) { // <<
93 <<
94 G4double impactX( 0.0 ), impactY( 0.0 ); <<
95 G4double B( 0.0 ), B2( 0.0 ); <<
96 <<
97 G4VSplitableHadron* primarySplitable = new <<
98 <<
99 #ifdef debugFTFparticipant <<
100 G4cout << "Hadron-nucleus or anti-baryon-n <<
101 #endif <<
102 <<
103 G4double xyradius = theNucleus->GetOuterRa <<
104 <<
105 const G4int maxNumberOfLoops = 1000; <<
106 G4int loopCounter = 0; <<
107 do { <<
108 <<
109 std::pair< G4double, G4double > theImpac <<
110 if ( SampleBinInterval() ) { <<
111 B2 = GetBmin2() + G4UniformRand() * ( <<
112 B = B2 > 0.0 ? std::sqrt( B2 ) : 0.0; <<
113 G4double Phi = twopi * G4UniformRand() <<
114 impactX = B * std::cos( Phi ); <<
115 impactY = B * std::sin( Phi ); <<
116 SetImpactParameter( B ); <<
117 } else { <<
118 theImpactParameter = theNucleus->Choos <<
119 impactX = theImpactParameter.first; <<
120 impactY = theImpactParameter.second; <<
121 SetImpactParameter( std::sqrt( sqr(imp <<
122 } <<
123 <<
124 #ifdef debugFTFparticipant <<
125 G4cout << "New interaction list," << " b <<
126 << std::sqrt( sqr(impactX ) + sqr <<
127 #endif <<
128 <<
129 G4ThreeVector thePosition( impactX, impa <<
130 primarySplitable->SetPosition( thePositi <<
131 <<
132 theNucleus->StartLoop(); <<
133 G4Nucleon* nucleon; <<
134 <<
135 #ifdef debugFTFparticipant <<
136 G4int TrN( 0 ); <<
137 #endif <<
138 <<
139 while ( ( nucleon = theNucleus->GetNextN <<
140 <<
141 G4double impact2 = sqr( impactX - nucl <<
142 sqr( impactY - nucl <<
143 41
144 if ( theParameters->GetProbabilityOfIn <<
145 G4UniformRand() ) { <<
146 primarySplitable->SetStatus( 1 ); / <<
147 G4VSplitableHadron* targetSplitable <<
148 if ( ! nucleon->AreYouHit() ) { <<
149 targetSplitable = new G4Diffractiv <<
150 nucleon->Hit( targetSplitable ); <<
151 targetSplitable->SetStatus( 1 ); / <<
152 42
153 #ifdef debugFTFparticipant << 43 // Class G4FTFParticipants
154 G4cout << "Participated nucleons # <<
155 << primarySplitable << " " <<
156 #endif <<
157 44
158 } <<
159 G4InteractionContent* aInteraction = <<
160 G4Nucleon* PrNucleon = 0; <<
161 aInteraction->SetProjectileNucleon( <<
162 aInteraction->SetTarget( targetSplit <<
163 aInteraction->SetTargetNucleon( nucl <<
164 aInteraction->SetStatus( 1 ); <<
165 aInteraction->SetInteractionTime( ( <<
166 <<
167 theInteractions.push_back( aInteract <<
168 } <<
169 45
170 #ifdef debugFTFparticipant <<
171 TrN++; <<
172 #endif <<
173 46
174 } << 47 G4FTFParticipants::G4FTFParticipants()
>> 48 {
>> 49 }
175 50
176 } while ( ( theInteractions.size() == 0 ) << 51 G4FTFParticipants::G4FTFParticipants(const G4FTFParticipants &): G4VParticipants()
177 ++loopCounter < maxNumberOfLoops << 52 {
178 if ( loopCounter >= maxNumberOfLoops ) { << 53 }
179 #ifdef debugFTFparticipant <<
180 G4cout << "BAD situation: forced exit fr <<
181 #endif <<
182 return; <<
183 } <<
184 54
185 #ifdef debugFTFparticipant <<
186 G4cout << "Number of Hit nucleons " << the <<
187 << "\t By[fm] " << impactY/fermi << <<
188 << std::sqrt( sqr( impactX ) + sqr( <<
189 #endif <<
190 <<
191 //SortInteractionsIncT(); // Not need beca <<
192 ShiftInteractionTime(); // To put correct <<
193 return; <<
194 <<
195 } // end of if ( theProjectileNucleus == 0 <<
196 <<
197 // Projectile and target are nuclei <<
198 <<
199 #ifdef debugFTFparticipant <<
200 G4cout << "Projectile and target are nuclei" <<
201 #endif <<
202 <<
203 //G4cout<<theProjectileNucleus->GetOuterRadi <<
204 <<
205 // Range of impact parameter sampling <<
206 G4double xyradius = theProjectileNucleus->Ge <<
207 <<
208 G4double impactX( 0.0 ), impactY( 0.0 ); <<
209 G4double B( 0.0 ), B2( 0.0 ); <<
210 <<
211 const G4int maxNumberOfLoops = 1000; <<
212 G4int loopCounter = 0; <<
213 do { <<
214 <<
215 std::pair< G4double, G4double > theImpactP <<
216 if ( SampleBinInterval() ) { <<
217 B2 = GetBmin2() + G4UniformRand() * ( Ge <<
218 B = B2 > 0.0 ? std::sqrt( B2 ) : 0.0; <<
219 G4double Phi = twopi * G4UniformRand(); <<
220 impactX = B * std::cos( Phi ); <<
221 impactY = B * std::sin( Phi ); <<
222 SetImpactParameter( B ); <<
223 } else { <<
224 theImpactParameter = theNucleus->ChooseI <<
225 impactX = theImpactParameter.first; <<
226 impactY = theImpactParameter.second; <<
227 SetImpactParameter( std::sqrt( sqr(impac <<
228 } <<
229 55
230 #ifdef debugFTFparticipant << 56 G4FTFParticipants::~G4FTFParticipants()
231 G4cout << "New interaction list, " << "b[f << 57 {
232 << std::sqrt( sqr( impactX ) + sqr( << 58 // G4cout << "G4FTFParticipants::~G4FTFParticipants() called" << G4endl;
233 #endif <<
234 <<
235 G4ThreeVector theBeamPosition( impactX, im <<
236 <<
237 theProjectileNucleus->StartLoop(); <<
238 G4Nucleon* ProjectileNucleon; <<
239 <<
240 #ifdef debugFTFparticipant <<
241 G4int PrNuclN( 0 ); <<
242 #endif <<
243 <<
244 while ( ( ProjectileNucleon = theProjectil <<
245 <<
246 G4VSplitableHadron* ProjectileSplitable <<
247 theNucleus->StartLoop(); <<
248 G4Nucleon* TargetNucleon = 0; <<
249 <<
250 #ifdef debugFTFparticipant <<
251 G4int TrNuclN( 0 ); <<
252 #endif <<
253 <<
254 while ( ( TargetNucleon = theNucleus->Ge <<
255 <<
256 G4double impact2 = sqr( impactX + Proj <<
257 TargetNucleon- <<
258 sqr( impactY + Proj <<
259 TargetNucleon- <<
260 G4VSplitableHadron* TargetSplitable = <<
261 if ( theParameters->GetProbabilityOfIn <<
262 G4UniformRand() ) { // An intera <<
263 <<
264 #ifdef debugFTFparticipant <<
265 G4cout << G4endl << "An Interaction <<
266 << " " << ProjectileNucleon-> <<
267 << "Targ N mom " << TrNuclN < <<
268 << "PrN TrN Z coords [fm]" << <<
269 << " " << TargetNucleon->GetP <<
270 << " " << ProjectileNucleon-> <<
271 TargetNucleon->GetP <<
272 #endif <<
273 <<
274 if ( ! ProjectileNucleon->AreYouHit( <<
275 // Projectile nucleon was not invo <<
276 ProjectileSplitable = new G4Diffra <<
277 ProjectileNucleon->Hit( Projectile <<
278 ProjectileSplitable->SetStatus( 1 <<
279 } else { // Projectile nucleon was <<
280 ProjectileSplitable = ProjectileNu <<
281 } <<
282 <<
283 if ( ! TargetNucleon->AreYouHit() ) <<
284 TargetSplitable = new G4Diffractiv <<
285 TargetNucleon->Hit( TargetSplitabl <<
286 TargetSplitable->SetStatus( 1 ); <<
287 } else { // Target nucleon was invo <<
288 TargetSplitable = TargetNucleon->G <<
289 } <<
290 <<
291 G4InteractionContent* anInteraction <<
292 anInteraction->SetTarget( TargetSpli <<
293 anInteraction->SetProjectileNucleon( <<
294 anInteraction->SetTargetNucleon( Tar <<
295 anInteraction->SetInteractionTime( ( <<
296 <<
297 anInteraction->SetStatus( 1 ); <<
298 <<
299 #ifdef debugFTFparticipant <<
300 G4cout << "Part anInteraction->GetIn <<
301 << anInteraction->GetInteract <<
302 << "Splitable Pr* Tr* " << Pr <<
303 << TargetSplitable << G4endl; <<
304 #endif <<
305 <<
306 theInteractions.push_back( anInterac <<
307 <<
308 } // End of an Interaction has happend <<
309 <<
310 #ifdef debugFTFparticipant <<
311 TrNuclN++; <<
312 #endif <<
313 <<
314 } // End of while ( ( TargetNucleon = t <<
315 <<
316 #ifdef debugFTFparticipant <<
317 PrNuclN++; <<
318 #endif <<
319 <<
320 } // End of while ( ( ProjectileNucleon = <<
321 <<
322 if ( theInteractions.size() != 0 ) theProj <<
323 <<
324 } while ( ( theInteractions.size() == 0 ) && <<
325 ++loopCounter < maxNumberOfLoops ) <<
326 if ( loopCounter >= maxNumberOfLoops ) { <<
327 #ifdef debugFTFparticipant <<
328 G4cout << "BAD situation: forced exit from <<
329 #endif <<
330 return; <<
331 } <<
332 <<
333 SortInteractionsIncT(); <<
334 ShiftInteractionTime(); <<
335 <<
336 #ifdef debugFTFparticipant <<
337 G4cout << G4endl << "Number of primary colli <<
338 << "\t Bx[fm] " << impactX/fermi << " <<
339 << "\t B[fm] " << std::sqrt( sqr( imp <<
340 << "FTF participant End. ############ <<
341 #endif <<
342 return; <<
343 } 59 }
344 60
345 61
346 //============================================ << 62 //const G4FTFParticipants & G4FTFParticipants::operator=(const G4FTFParticipants &right)
>> 63 //{}
347 64
348 bool G4FTFPartHelperForSortInT( const G4Intera <<
349 const G4Intera <<
350 return Int1->GetInteractionTime() < Int2->Ge <<
351 } <<
352 65
>> 66 //int G4FTFParticipants::operator==(const G4FTFParticipants &right) const
>> 67 //{}
353 68
354 //============================================ << 69 //int G4FTFParticipants::operator!=(const G4FTFParticipants &right) const
355 << 70 //{}
356 void G4FTFParticipants::SortInteractionsIncT() << 71
357 if ( theInteractions.size() < 2 ) return; / << 72 void G4FTFParticipants::BuildInteractions(const G4ReactionProduct &thePrimary)
358 std::sort( theInteractions.begin(), theInter << 73 {
>> 74
>> 75 StartLoop(); // reset Loop over Interactions
>> 76
>> 77 for(unsigned int i=0; i<theInteractions.size(); i++) delete theInteractions[i];
>> 78 theInteractions.clear();
>> 79
>> 80 // --- cms energy
>> 81
>> 82 G4double s = sqr( thePrimary.GetMass() ) +
>> 83 sqr( G4Proton::Proton()->GetPDGMass() ) +
>> 84 2*thePrimary.GetTotalEnergy()*G4Proton::Proton()->GetPDGMass();
>> 85
>> 86 // G4cout << " primary Total E (GeV): " << thePrimary.GetTotalEnergy()/GeV << G4endl;
>> 87 // G4cout << " primary Mass (GeV): " << thePrimary.GetMass() /GeV << G4endl;
>> 88 // G4cout << "cms std::sqrt(s) (GeV) = " << std::sqrt(s) / GeV << G4endl;
>> 89
>> 90 G4PomeronCrossSection theCrossSection(thePrimary.GetDefinition());
>> 91
>> 92
>> 93
>> 94 G4double deltaxy=2 * fermi;
>> 95
>> 96 G4VSplitableHadron * primarySplitable=new G4DiffractiveSplitableHadron(thePrimary);
>> 97
>> 98 G4double xyradius;
>> 99 xyradius =theNucleus->GetOuterRadius() + deltaxy;
>> 100
>> 101 // G4cout <<" G4FTFParticipants::StartLoop: xyradius " << xyradius << G4endl;
>> 102
>> 103 G4bool nucleusNeedsShift = true;
>> 104
>> 105 while ( theInteractions.size() == 0 )
>> 106 {
>> 107 std::pair<G4double, G4double> theImpactParameter;
>> 108 theImpactParameter = theNucleus->ChooseImpactXandY(xyradius);
>> 109 G4double impactX = theImpactParameter.first;
>> 110 G4double impactY = theImpactParameter.second;
>> 111
>> 112 // G4cout << " impctX, impctY " << impactX/fermi << " "<<impactY/fermi << " fm" << G4endl;
>> 113
>> 114 theNucleus->StartLoop();
>> 115 G4Nucleon * nucleon;
>> 116 while ( (nucleon=theNucleus->GetNextNucleon()) )
>> 117 {
>> 118 G4double impact2= sqr(impactX - nucleon->GetPosition().x()) +
>> 119 sqr(impactY - nucleon->GetPosition().y());
>> 120 if ( theCrossSection.GetInelasticProbability(s,impact2)
>> 121 > G4UniformRand() )
>> 122 {
>> 123 if ( nucleusNeedsShift )
>> 124 { // on the first hit, shift nucleus
>> 125 nucleusNeedsShift = false;
>> 126 theNucleus->DoTranslation(G4ThreeVector(-1*impactX,-1*impactY,0.));
>> 127 impactX=0;
>> 128 impactY=0;
>> 129 }
>> 130 G4VSplitableHadron * targetSplitable;
>> 131 if ( (targetSplitable=nucleon->GetSplitableHadron()) == NULL )
>> 132 {
>> 133 targetSplitable= new G4DiffractiveSplitableHadron(*nucleon);
>> 134 nucleon->Hit(targetSplitable);
>> 135 }
>> 136 G4InteractionContent * aInteraction = new G4InteractionContent(primarySplitable);
>> 137 aInteraction->SetTarget(targetSplitable);
>> 138 theInteractions.push_back(aInteraction);
>> 139 }
>> 140 }
>> 141
>> 142 // G4cout << "Number of Hit nucleons " << theInteractions.entries()
>> 143 // << "\t" << impactX/fermi << "\t"<<impactY/fermi
>> 144 // << "\t" << std::sqrt(sqr(impactX)+sqr(impactY))/fermi <<G4endl;
>> 145
>> 146 }
>> 147
359 } 148 }
360 149
361 150
362 //============================================ << 151 // Implementation (private) methods
363 152
364 void G4FTFParticipants::ShiftInteractionTime() <<
365 G4double InitialTime = theInteractions[0]->G <<
366 for ( unsigned int i = 1; i < theInteraction <<
367 G4double InterTime = theInteractions[i]->G <<
368 theInteractions[i]->SetInteractionTime( In <<
369 G4InteractionContent* aCollision = theInte <<
370 G4VSplitableHadron* projectile = aCollisio <<
371 G4VSplitableHadron* target = aCollision->G <<
372 G4ThreeVector prPosition = projectile->Get <<
373 prPosition.setZ( target->GetPosition().z() <<
374 projectile->SetPosition( prPosition ); <<
375 projectile->SetTimeOfCreation( InterTime ) <<
376 target->SetTimeOfCreation( InterTime ); <<
377 } <<
378 return; <<
379 } <<
380 153
381 154
382 //============================================ <<
383 155
384 void G4FTFParticipants::Clean() { <<
385 for ( size_t i = 0; i < theInteractions.size <<
386 if ( theInteractions[ i ] ) { <<
387 delete theInteractions[ i ]; <<
388 theInteractions[ i ] = 0; <<
389 } <<
390 } <<
391 theInteractions.clear(); <<
392 currentInteraction = -1; <<
393 } <<
394 156
395 157