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Geant4/processes/hadronic/models/inclxx/incl_physics/src/G4INCLPiNToMultiPionsChannel.cc

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Diff markup

Differences between /processes/hadronic/models/inclxx/incl_physics/src/G4INCLPiNToMultiPionsChannel.cc (Version 11.3.0) and /processes/hadronic/models/inclxx/incl_physics/src/G4INCLPiNToMultiPionsChannel.cc (Version 9.2.p2)


  1 //                                                  1 
  2 // *******************************************    
  3 // * License and Disclaimer                       
  4 // *                                              
  5 // * The  Geant4 software  is  copyright of th    
  6 // * the Geant4 Collaboration.  It is provided    
  7 // * conditions of the Geant4 Software License    
  8 // * LICENSE and available at  http://cern.ch/    
  9 // * include a list of copyright holders.         
 10 // *                                              
 11 // * Neither the authors of this software syst    
 12 // * institutes,nor the agencies providing fin    
 13 // * work  make  any representation or  warran    
 14 // * regarding  this  software system or assum    
 15 // * use.  Please see the license in the file     
 16 // * for the full disclaimer and the limitatio    
 17 // *                                              
 18 // * This  code  implementation is the result     
 19 // * technical work of the GEANT4 collaboratio    
 20 // * By using,  copying,  modifying or  distri    
 21 // * any work based  on the software)  you  ag    
 22 // * use  in  resulting  scientific  publicati    
 23 // * acceptance of all terms of the Geant4 Sof    
 24 // *******************************************    
 25 //                                                
 26 // INCL++ intra-nuclear cascade model             
 27 // Alain Boudard, CEA-Saclay, France              
 28 // Joseph Cugnon, University of Liege, Belgium    
 29 // Jean-Christophe David, CEA-Saclay, France      
 30 // Pekka Kaitaniemi, CEA-Saclay, France, and H    
 31 // Sylvie Leray, CEA-Saclay, France               
 32 // Davide Mancusi, CEA-Saclay, France             
 33 //                                                
 34 #define INCLXX_IN_GEANT4_MODE 1                   
 35                                                   
 36 #include "globals.hh"                             
 37                                                   
 38 #include "G4INCLPiNToMultiPionsChannel.hh"        
 39 #include "G4INCLKinematicsUtils.hh"               
 40 #include "G4INCLBinaryCollisionAvatar.hh"         
 41 #include "G4INCLRandom.hh"                        
 42 #include "G4INCLGlobals.hh"                       
 43 #include "G4INCLLogger.hh"                        
 44 #include <algorithm>                              
 45 #include "G4INCLPhaseSpaceGenerator.hh"           
 46                                                   
 47 namespace G4INCL {                                
 48                                                   
 49   const G4double PiNToMultiPionsChannel::angul    
 50                                                   
 51   PiNToMultiPionsChannel::PiNToMultiPionsChann    
 52     : npion(npi),                                 
 53     ind2(0),                                      
 54     particle1(p1),                                
 55     particle2(p2)                                 
 56   {                                               
 57     std::fill(isosp, isosp+4, 0);                 
 58   }                                               
 59                                                   
 60   PiNToMultiPionsChannel::~PiNToMultiPionsChan    
 61                                                   
 62   }                                               
 63                                                   
 64   void PiNToMultiPionsChannel::fillFinalState(    
 65                                                   
 66 // assert(npion > 1 && npion < 5);                
 67                                                   
 68     Particle * nucleon;                           
 69     Particle * pion;                              
 70     if(particle1->isNucleon()) {                  
 71       nucleon = particle1;                        
 72       pion = particle2;                           
 73     } else {                                      
 74       nucleon = particle2;                        
 75       pion = particle1;                           
 76     }                                             
 77 #ifdef INCLXX_IN_GEANT4_MODE                      
 78     // Erase the parent resonance information     
 79     nucleon->setParentResonancePDGCode(0);        
 80     nucleon->setParentResonanceID(0);             
 81     pion->setParentResonancePDGCode(0);           
 82     pion->setParentResonanceID(0);                
 83 #endif                                            
 84       G4int ipi=ParticleTable::getIsospin(pion    
 85       ind2=ParticleTable::getIsospin(nucleon->    
 86                                                   
 87       ParticleList list;                          
 88       list.push_back(nucleon);                    
 89       list.push_back(pion);                       
 90       fs->addModifiedParticle(nucleon);           
 91       fs->addModifiedParticle(pion);              
 92                                                   
 93       isospinRepartition(ipi);                    
 94                                                   
 95       const ParticleType tn=ParticleTable::get    
 96       nucleon->setType(tn);                       
 97       ParticleType pionType=ParticleTable::get    
 98       pion->setType(pionType);                    
 99       const ThreeVector &rcolpion = pion->getP    
100       const ThreeVector zero;                     
101       for(G4int i=1; i<npion; ++i) {              
102         pionType=ParticleTable::getPionType(is    
103         Particle *newPion = new Particle(pionT    
104         newPion->setType(pionType);               
105         list.push_back(newPion);                  
106         fs->addCreatedParticle(newPion);          
107       }                                           
108                                                   
109       const G4double sqrtS = KinematicsUtils::    
110       PhaseSpaceGenerator::generateBiased(sqrt    
111                                                   
112   }                                               
113                                                   
114     void PiNToMultiPionsChannel::isospinRepart    
115         G4double rjcd=Random::shoot();            
116         const G4int itot=ipi*ind2;                
117                                                   
118         isosp[1]=ipi;                             
119         if (npion != 3) {                         
120             if (npion == 4){                      
121               const G4double r2 = Random::shoo    
122                 if (r2*3. > 2.) {                 
123                     isosp[2]= 0;                  
124                     isosp[3]= 0;                  
125                 }                                 
126                 else {                            
127                     isosp[2]=  2;                 
128                     isosp[3]= -2;                 
129                 }                                 
130             }                                     
131                                                   
132             if (itot == 2) {                      
133                 // CAS PI+ P ET PI- n             
134                 rjcd *= 5.;                       
135                 if (rjcd > 3.) {                  
136                     //      PI+ PI+ N ET PI- P    
137                     isosp[0]=2*ind2;              
138                     isosp[1]=ipi;                 
139                     ind2=-ind2;                   
140                 }                                 
141                 else {                            
142                     //      PI+ PI0 P ET PI- P    
143                     isosp[0]=0;                   
144                     isosp[1]=ipi;                 
145                 }                                 
146             }                                     
147             else if (itot == 0) {                 
148                 // CAS PI0 P ET PI0 N             
149                 rjcd *= 90.;                      
150                 if (rjcd > 13.) {                 
151                     if (rjcd > 52.) {             
152                         //     PI+ PI0 N ET PI    
153                         isosp[0]=2*ind2;          
154                         isosp[1]=0;               
155                         ind2=-ind2;               
156                     }                             
157                     else {                        
158                         //     PI+ PI- P ET PI    
159                         isosp[1]=-2;              
160                         isosp[0]=2;               
161                     }                             
162                 }                                 
163                 else {                            
164                     //     PI0 PI0 P ET PI0 PI    
165                     isosp[0]=0;                   
166                     isosp[1]=0;                   
167                 }                                 
168             }                                     
169             else if (itot == -2) {                
170                 // CAS PI- P ET PI+ N             
171                 rjcd *= 45.;                      
172                 if (rjcd > 17.) {                 
173                     if (rjcd > 24.) {             
174                         //     PI+ PI- N ET PI    
175                         isosp[0]=2*ind2;          
176                         ind2=-ind2;               
177                     }                             
178                     else {                        
179                         //     PI0 PI0 N ET PI    
180                         isosp[0]=0;               
181                         isosp[1]=0;               
182                         ind2=-ind2;               
183                     }                             
184                 }                                 
185                 else                              
186                     //     PI- PI0 P ET PI+ PI    
187                     isosp[0]=0;                   
188             }                                     
189         } // if (npion != 3)                      
190         else {                                    
191             // PI N -> PI PI PI N                 
192             //          IF (IPI*IND2) 20,21,22    
193             if (itot == -2) {                     
194                 // CAS PI- P ET PI+ N             
195                 rjcd *= 135.;                     
196                 if (rjcd <= 28.) {                
197                     //     PI0 PI0 PI0 N ET PI    
198                     isosp[0]=0;                   
199                     isosp[1]=0;                   
200                     isosp[2]=0;                   
201                     ind2=-ind2;                   
202                 }                                 
203                 else {                            
204                     if (rjcd <= 84.) {            
205                         //     PI+ PI- PI0 N E    
206                         isosp[0]=2*ind2;          
207                         isosp[2]=0;               
208                         ind2=-ind2;               
209                     }                             
210                     else {                        
211                         if (rjcd <= 118.) {       
212                             //     PI- PI- PI+    
213                             isosp[0]=ipi;         
214                             isosp[2]=-ipi;        
215                         }                         
216                         else {                    
217                             //     PI- PI0 PI0    
218                             isosp[0]=0;           
219                             isosp[2]=0;           
220                         }                         
221                     }                             
222                 }                                 
223             }                                     
224             else if (itot == 0) {                 
225                 // CAS PI0 P ET PI0 N             
226                 rjcd *= 270.;                     
227                 if (rjcd <= 39.) {                
228                     //     PI0 PI0 PI0 P ET PI    
229                     isosp[0]=0;                   
230                     isosp[2]=0;                   
231                 }                                 
232                 else {                            
233                     if (rjcd <= 156.) {           
234                         //     PI+ PI- PI0 P E    
235                         isosp[0]=2;               
236                         isosp[2]=-2;              
237                     }                             
238                     else {                        
239                         if (rjcd <= 194.) {       
240                             //     PI+ PI0 PI0    
241                             isosp[0]=0;           
242                             isosp[2]=2*ind2;      
243                             ind2=-ind2;           
244                         }                         
245                         else {                    
246                             //     PI- PI+ PI+    
247                             isosp[0]=2*ind2;      
248                             isosp[1]=2*ind2;      
249                             isosp[2]=-2*ind2;     
250                             ind2=-ind2;           
251                         }                         
252                     }                             
253                 }                                 
254             }                                     
255             else if (itot == 2) {                 
256                 // CAS PI+ P ET PI- N             
257                 rjcd *= 5.;                       
258                 if (rjcd <= 2.) {                 
259                     //     PI+ P PI0 PI0 ET PI    
260                     isosp[0]=0;                   
261                     isosp[2]=0;                   
262                 }                                 
263                 else {                            
264                     if (rjcd <= 3.) {             
265                         //     PI+ P PI+ PI- E    
266                         isosp[0]=-2;              
267                         isosp[2]=2;               
268                     }                             
269                     else {                        
270                         //     PI+ N PI+ PI0 E    
271                         isosp[0]=2*ind2;          
272                         isosp[2]=0;               
273                         ind2=-ind2;               
274                     }                             
275                 }                                 
276             }                                     
277         }                                         
278                                                   
279         std::shuffle(isosp,isosp+npion,Random:    
280     }                                             
281                                                   
282 }                                                 
283