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25 //
26 // 20110906 M. Kelsey -- Use reference to G4HadSecondary instead of pointer
27
28 #include "G4HadLeadBias.hh"
29 #include "G4Gamma.hh"
30 #include "G4PionZero.hh"
31 #include "Randomize.hh"
32 #include "G4HadFinalState.hh"
33
34 G4HadFinalState * G4HadLeadBias::Bias(G4HadFinalState * result)
35 {
36 // G4cerr << "bias enter"<<G4endl;
37 G4int nMeson(0), nBaryon(0), npi0(0), ngamma(0), nLepton(0);
38 G4int i(0);
39 G4int maxE = -1;
40 G4double emax = 0;
41 if(result->GetStatusChange()==isAlive)
42 {
43 emax = result->GetEnergyChange();
44 }
45 //G4cout << "max energy "<<G4endl;
46 for(i=0;i<static_cast<G4int>(result->GetNumberOfSecondaries());i++)
47 {
48 if(result->GetSecondary(i)->GetParticle()->GetKineticEnergy()>emax)
49 {
50 maxE = i;
51 emax = result->GetSecondary(i)->GetParticle()->GetKineticEnergy();
52 }
53 }
54 //G4cout <<"loop1"<<G4endl;
55 for(i=0; i<static_cast<G4int>(result->GetNumberOfSecondaries()); i++)
56 {
57 const G4DynamicParticle* aSecTrack = result->GetSecondary(i)->GetParticle();
58 if(i==maxE)
59 {
60 }
61 else if(aSecTrack->GetDefinition()->GetBaryonNumber()!=0)
62 {
63 nBaryon++;
64 }
65 else if(aSecTrack->GetDefinition()->GetLeptonNumber()!=0)
66 {
67 nLepton++;
68 }
69 else if(aSecTrack->GetDefinition()==G4Gamma::Gamma())
70 {
71 ngamma++;
72 }
73 else if(aSecTrack->GetDefinition()==G4PionZero::PionZero())
74 {
75 npi0++;
76 }
77 else
78 {
79 nMeson++;
80 }
81 }
82 //G4cout << "BiasDebug 1 = "<<result->GetNumberOfSecondaries()<<" "
83 // <<nMeson<<" "<< nBaryon<<" "<< npi0<<" "<< ngamma<<" "<< nLepton<<G4endl;
84 G4double mesonWeight = nMeson;
85 G4double baryonWeight = nBaryon;
86 G4double gammaWeight = ngamma;
87 G4double npi0Weight = npi0;
88 G4double leptonWeight = nLepton;
89 G4int randomMeson = static_cast<G4int>((nMeson+1)*G4UniformRand());
90 G4int randomBaryon = static_cast<G4int>((nBaryon+1)*G4UniformRand());
91 G4int randomGamma = static_cast<G4int>((ngamma+1)*G4UniformRand());
92 G4int randomPi0 = static_cast<G4int>((npi0+1)*G4UniformRand());
93 G4int randomLepton = static_cast<G4int>((nLepton+1)*G4UniformRand());
94
95 std::vector<G4HadSecondary> buffer;
96 G4int cMeson(0), cBaryon(0), cpi0(0), cgamma(0), cLepton(0);
97 for(i=0; i<static_cast<G4int>(result->GetNumberOfSecondaries()); i++)
98 {
99 G4bool aCatch = false;
100 G4double weight = 1;
101 const G4HadSecondary* aSecTrack = result->GetSecondary(i);
102 G4ParticleDefinition* aSecDef = aSecTrack->GetParticle()->GetDefinition();
103 if(i==maxE)
104 {
105 aCatch = true;
106 weight = 1;
107 }
108 else if(aSecDef->GetBaryonNumber()!=0)
109 {
110 if(++cBaryon==randomBaryon)
111 {
112 aCatch = true;
113 weight = baryonWeight;
114 }
115 }
116 else if(aSecDef->GetLeptonNumber()!=0)
117 {
118 if(++cLepton==randomLepton)
119 {
120 aCatch = true;
121 weight = leptonWeight;
122 }
123 }
124 else if(aSecDef==G4Gamma::Gamma())
125 {
126 if(++cgamma==randomGamma)
127 {
128 aCatch = true;
129 weight = gammaWeight;
130 }
131 }
132 else if(aSecDef==G4PionZero::PionZero())
133 {
134 if(++cpi0==randomPi0)
135 {
136 aCatch = true;
137 weight = npi0Weight;
138 }
139 }
140 else
141 {
142 if(++cMeson==randomMeson)
143 {
144 aCatch = true;
145 weight = mesonWeight;
146 }
147 }
148 if(aCatch)
149 {
150 buffer.push_back(*aSecTrack);
151 buffer.back().SetWeight(aSecTrack->GetWeight()*weight);
152 }
153 else
154 {
155 delete aSecTrack;
156 }
157 }
158 result->ClearSecondaries();
159 // G4cerr << "pre"<<G4endl;
160 result->AddSecondaries(buffer);
161 // G4cerr << "bias exit"<<G4endl;
162
163 return result;
164 }
165