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Geant4/processes/hadronic/models/im_r_matrix/src/G4CollisionComposite.cc

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Diff markup

Differences between /processes/hadronic/models/im_r_matrix/src/G4CollisionComposite.cc (Version 11.3.0) and /processes/hadronic/models/im_r_matrix/src/G4CollisionComposite.cc (Version 11.1.3)


  1 //                                                  1 //
  2 // *******************************************      2 // ********************************************************************
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  4 // *                                                4 // *                                                                  *
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 16 // * for the full disclaimer and the limitatio     16 // * for the full disclaimer and the limitation of liability.         *
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 18 // * This  code  implementation is the result      18 // * This  code  implementation is the result of  the  scientific and *
 19 // * technical work of the GEANT4 collaboratio     19 // * technical work of the GEANT4 collaboration.                      *
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 24 // *******************************************     24 // ********************************************************************
 25 //                                                 25 //
 26 //                                                 26 //
 27                                                    27 
 28 #include "globals.hh"                              28 #include "globals.hh"
 29 #include "G4SystemOfUnits.hh"                      29 #include "G4SystemOfUnits.hh"
 30 #include "G4CollisionComposite.hh"                 30 #include "G4CollisionComposite.hh"
 31 #include "G4VCollision.hh"                         31 #include "G4VCollision.hh"
 32 #include "G4CollisionVector.hh"                    32 #include "G4CollisionVector.hh"
 33 #include "G4KineticTrack.hh"                       33 #include "G4KineticTrack.hh"
 34 #include "G4KineticTrackVector.hh"                 34 #include "G4KineticTrackVector.hh"
 35 #include "G4VCrossSectionSource.hh"                35 #include "G4VCrossSectionSource.hh"
 36 #include "G4HadTmpUtil.hh"                         36 #include "G4HadTmpUtil.hh"
 37 #include "G4AutoLock.hh"                           37 #include "G4AutoLock.hh"
 38                                                    38 
 39 const G4int G4CollisionComposite::nPoints = 32     39 const G4int G4CollisionComposite::nPoints = 32;
 40                                                    40 
 41 const G4double G4CollisionComposite::theT[nPoi     41 const G4double G4CollisionComposite::theT[nPoints] =
 42 {.01, .03, .05, .1, .15, .2, .3, .4, .5, .6, .     42 {.01, .03, .05, .1, .15, .2, .3, .4, .5, .6, .7, .8, .9, 1.0, 1.2, 1.4, 1.6, 1.8, 2.0, 2.2, 2.5, 3.0, 3.5, 4.0, 5.0, 6.0, 8.0, 10., 15, 20, 50, 100};
 43                                                    43 
 44 G4CollisionComposite::G4CollisionComposite()       44 G4CollisionComposite::G4CollisionComposite()
 45 {                                                  45 { 
 46   G4MUTEXINIT( bufferMutex );                      46   G4MUTEXINIT( bufferMutex );
 47 }                                                  47 }
 48                                                    48 
 49                                                    49 
 50 G4CollisionComposite::~G4CollisionComposite()      50 G4CollisionComposite::~G4CollisionComposite()
 51 {                                                  51 {
 52   G4MUTEXDESTROY(bufferMutex);                     52   G4MUTEXDESTROY(bufferMutex);
 53   std::for_each(components.begin(), components     53   std::for_each(components.begin(), components.end(), G4Delete());
 54 }                                                  54 }
 55                                                    55 
 56                                                    56 
 57 G4double G4CollisionComposite::CrossSection(co     57 G4double G4CollisionComposite::CrossSection(const G4KineticTrack& trk1, 
 58               const G4KineticTrack& trk2) cons     58               const G4KineticTrack& trk2) const
 59 {                                                  59 {
 60   G4double crossSect = 0.;                         60   G4double crossSect = 0.;
 61   const G4VCrossSectionSource* xSource = GetCr     61   const G4VCrossSectionSource* xSource = GetCrossSectionSource();
 62   if (xSource != 0)                                62   if (xSource != 0)
 63   // There is a total cross section for this C     63   // There is a total cross section for this Collision
 64   {                                                64   {
 65     crossSect = xSource->CrossSection(trk1,trk     65     crossSect = xSource->CrossSection(trk1,trk2);
 66   }                                                66   }
 67   else                                             67   else
 68   {                                                68   {
 69     G4AutoLock l(&bufferMutex);                    69     G4AutoLock l(&bufferMutex);
 70     // waiting for mutable to enable buffering     70     // waiting for mutable to enable buffering.
 71     const_cast<G4CollisionComposite *>(this)->     71     const_cast<G4CollisionComposite *>(this)->BufferCrossSection(trk1.GetDefinition(), trk2.GetDefinition());
 72 //    G4cerr << "Buffer filled, reying with sq     72 //    G4cerr << "Buffer filled, reying with sqrts = "<< (trk1.Get4Momentum()+trk2.Get4Momentum()).mag() <<G4endl;
 73     crossSect = BufferedCrossSection(trk1,trk2     73     crossSect = BufferedCrossSection(trk1,trk2);
 74   }                                                74   }
 75   return crossSect;                                75   return crossSect;
 76 }                                                  76 }
 77                                                    77 
 78                                                    78 
 79 G4KineticTrackVector* G4CollisionComposite::Fi     79 G4KineticTrackVector* G4CollisionComposite::FinalState(const G4KineticTrack& trk1, 
 80                 const G4KineticTrack& trk2) co     80                 const G4KineticTrack& trk2) const
 81 {                                                  81 {
 82   std::vector<G4double> cxCache;                   82   std::vector<G4double> cxCache;
 83   G4double partialCxSum = 0.0;                     83   G4double partialCxSum = 0.0;
 84                                                    84 
 85   size_t i;                                        85   size_t i;
 86   for (i=0; i<components.size(); i++)              86   for (i=0; i<components.size(); i++) 
 87   {                                                87   {
 88     G4double partialCx;                            88     G4double partialCx;
 89 //    cout << "comp" << i << " " << components     89 //    cout << "comp" << i << " " << components[i]()->GetName();
 90     if (components[i]->IsInCharge(trk1,trk2))      90     if (components[i]->IsInCharge(trk1,trk2)) 
 91     {                                              91     {
 92       partialCx = components[i]->CrossSection(     92       partialCx = components[i]->CrossSection(trk1,trk2);
 93     }                                              93     } 
 94     else                                           94     else 
 95     {                                              95     {
 96       partialCx = 0.0;                             96       partialCx = 0.0;
 97     }                                              97     }
 98 //    cout << "   cx=" << partialCx << endl;       98 //    cout << "   cx=" << partialCx << endl;
 99     partialCxSum += partialCx;                     99     partialCxSum += partialCx;
100     cxCache.push_back(partialCx);                 100     cxCache.push_back(partialCx);
101   }                                               101   }
102                                                   102 
103   G4double random = G4UniformRand()*partialCxS    103   G4double random = G4UniformRand()*partialCxSum;
104   G4double running = 0;                           104   G4double running = 0;
105   for (i=0; i<cxCache.size(); i++)                105   for (i=0; i<cxCache.size(); i++) 
106   {                                               106   {
107     running += cxCache[i];                        107     running += cxCache[i];
108     if (running > random)                         108     if (running > random) 
109     {                                             109     {
110       return components[i]->FinalState(trk1, t    110       return components[i]->FinalState(trk1, trk2);
111     }                                             111     }
112   }                                               112   }
113 //  G4cerr <<"in charge = "<<IsInCharge(trk1,     113 //  G4cerr <<"in charge = "<<IsInCharge(trk1, trk2)<<G4endl;
114 //  G4cerr <<"Cross-section = "<<CrossSection(    114 //  G4cerr <<"Cross-section = "<<CrossSection(trk1, trk2)/millibarn<<" "<<running<<" "<<cxCache.size()<<G4endl;
115 //  G4cerr <<"Names = "<<trk1.GetDefinition()-    115 //  G4cerr <<"Names = "<<trk1.GetDefinition()->GetParticleName()<<", "<<trk2.GetDefinition()->GetParticleName()<<G4endl;
116 //  throw G4HadronicException(__FILE__, __LINE    116 //  throw G4HadronicException(__FILE__, __LINE__, "G4CollisionComposite: no final state found!");
117   return NULL;                                    117   return NULL;
118 }                                                 118 }
119                                                   119 
120                                                   120 
121 G4bool G4CollisionComposite::IsInCharge(const     121 G4bool G4CollisionComposite::IsInCharge(const G4KineticTrack& trk1, 
122           const G4KineticTrack& trk2) const       122           const G4KineticTrack& trk2) const
123 {                                                 123 {
124   G4bool isInCharge = false;                      124   G4bool isInCharge = false;
125                                                   125 
126   // The composite is in charge if any of its     126   // The composite is in charge if any of its components is in charge
127                                                   127 
128   const G4CollisionVector* comps = GetComponen    128   const G4CollisionVector* comps = GetComponents();
129   if (comps)                                      129   if (comps)
130     {                                             130     {
131       G4CollisionVector::const_iterator iter;     131       G4CollisionVector::const_iterator iter;
132       for (iter = comps->begin(); iter != comp    132       for (iter = comps->begin(); iter != comps->end(); ++iter)
133   {                                               133   {
134    if ( ((*iter))->IsInCharge(trk1,trk2) ) isI    134    if ( ((*iter))->IsInCharge(trk1,trk2) ) isInCharge = true;
135   }                                               135   }
136     }                                             136     }
137                                                   137 
138   return isInCharge;                              138   return isInCharge;
139 }                                                 139 }
140                                                   140 
141 void G4CollisionComposite::                       141 void G4CollisionComposite::
142 BufferCrossSection(const G4ParticleDefinition     142 BufferCrossSection(const G4ParticleDefinition * aP, const G4ParticleDefinition * bP)
143 {                                                 143 {
144    // check if already buffered                   144    // check if already buffered
145    size_t i;                                      145    size_t i;
146    for(i=0; i<theBuffer.size(); i++)              146    for(i=0; i<theBuffer.size(); i++)
147    {                                              147    {
148      if(theBuffer[i].InCharge(aP, bP)) return;    148      if(theBuffer[i].InCharge(aP, bP)) return;
149    }                                              149    }
150 //   G4cerr << "Buffering for "<<aP->GetPartic    150 //   G4cerr << "Buffering for "<<aP->GetParticleName()<<" "<<bP->GetParticleName()<<G4endl;
151                                                   151    
152    // buffer the new one.                         152    // buffer the new one.
153    G4CrossSectionBuffer aNewBuff(aP, bP);         153    G4CrossSectionBuffer aNewBuff(aP, bP);
154    size_t maxE=nPoints;                           154    size_t maxE=nPoints;
155    for(size_t tt=0; tt<maxE; tt++)                155    for(size_t tt=0; tt<maxE; tt++)
156    {                                              156    {
157      G4double aT = theT[tt]*GeV;                  157      G4double aT = theT[tt]*GeV;
158      G4double crossSect = 0;                      158      G4double crossSect = 0;
159      // The total cross-section is summed over    159      // The total cross-section is summed over all the component channels
160                                                   160      
161      //A.R. 28-Sep-2012 Fix reproducibility pr    161      //A.R. 28-Sep-2012 Fix reproducibility problem
162      //                 Assign the kinetic ene    162      //                 Assign the kinetic energy to the lightest of the
163      //                 two particles, instead    163      //                 two particles, instead to the first one always.
164      G4double atime = 0;                          164      G4double atime = 0;
165      G4double btime = 0;                          165      G4double btime = 0;
166      G4ThreeVector aPosition(0,0,0);              166      G4ThreeVector aPosition(0,0,0);
167      G4ThreeVector bPosition(0,0,0);              167      G4ThreeVector bPosition(0,0,0);
168      G4double aM = aP->GetPDGMass();              168      G4double aM = aP->GetPDGMass();
169      G4double bM = bP->GetPDGMass();              169      G4double bM = bP->GetPDGMass();
170      G4double aE = aM;                            170      G4double aE = aM;
171      G4double bE = bM;                            171      G4double bE = bM;
172      G4ThreeVector aMom(0,0,0);                   172      G4ThreeVector aMom(0,0,0);
173      G4ThreeVector bMom(0,0,0);                   173      G4ThreeVector bMom(0,0,0);
174      if ( aM <= bM ) {                            174      if ( aM <= bM ) {
175       aE += aT;                                   175       aE += aT;
176       aMom = G4ThreeVector(0,0,std::sqrt(aE*aE    176       aMom = G4ThreeVector(0,0,std::sqrt(aE*aE-aM*aM));
177      } else {                                     177      } else {
178       bE += aT;                                   178       bE += aT;
179       bMom = G4ThreeVector(0,0,std::sqrt(bE*bE    179       bMom = G4ThreeVector(0,0,std::sqrt(bE*bE-bM*bM));
180      }                                            180      }
181      G4LorentzVector a4Momentum(aE, aMom);        181      G4LorentzVector a4Momentum(aE, aMom);
182      G4LorentzVector b4Momentum(bE, bMom);        182      G4LorentzVector b4Momentum(bE, bMom);
183      G4KineticTrack a(aP, atime, aPosition, a4    183      G4KineticTrack a(aP, atime, aPosition, a4Momentum);
184      G4KineticTrack b(bP, btime, bPosition, b4    184      G4KineticTrack b(bP, btime, bPosition, b4Momentum);
185                                                   185      
186      for (i=0; i<components.size(); i++)          186      for (i=0; i<components.size(); i++)
187      {                                            187      {
188        if(components[i]->IsInCharge(a,b))         188        if(components[i]->IsInCharge(a,b))
189        {                                          189        {
190    crossSect += components[i]->CrossSection(a,    190    crossSect += components[i]->CrossSection(a,b);
191        }                                          191        }
192      }                                            192      }
193      G4double sqrts = (a4Momentum+b4Momentum).    193      G4double sqrts = (a4Momentum+b4Momentum).mag();
194      aNewBuff.push_back(sqrts, crossSect);        194      aNewBuff.push_back(sqrts, crossSect);
195    }                                              195    }
196    theBuffer.push_back(std::move(aNewBuff));   << 196    theBuffer.push_back(aNewBuff);
197 //   theBuffer.back().Print();                    197 //   theBuffer.back().Print();
198 }                                                 198 }
199                                                   199 
200                                                   200 
201 G4double G4CollisionComposite::                   201 G4double G4CollisionComposite::
202 BufferedCrossSection(const G4KineticTrack& trk    202 BufferedCrossSection(const G4KineticTrack& trk1, const G4KineticTrack& trk2) const
203 {                                                 203 {
204    for(size_t i=0; i<theBuffer.size(); i++)       204    for(size_t i=0; i<theBuffer.size(); i++)
205    {                                              205    {
206      if(theBuffer[i].InCharge(trk1.GetDefiniti    206      if(theBuffer[i].InCharge(trk1.GetDefinition(), trk2.GetDefinition())) 
207      {                                            207      {
208        return theBuffer[i].CrossSection(trk1,     208        return theBuffer[i].CrossSection(trk1, trk2);
209      }                                            209      }
210    }                                              210    }
211    throw G4HadronicException(__FILE__, __LINE_    211    throw G4HadronicException(__FILE__, __LINE__, "G4CollisionComposite::BufferedCrossSection - Blitz !!");
212    return 0;                                      212    return 0;
213 }                                                 213 }
214                                                   214 
215                                                   215