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25 // 25 //
26 // INCL++ intra-nuclear cascade model 26 // INCL++ intra-nuclear cascade model
27 // Alain Boudard, CEA-Saclay, France << 27 // Pekka Kaitaniemi, CEA and Helsinki Institute of Physics
28 // Joseph Cugnon, University of Liege, Belgium << 28 // Davide Mancusi, CEA
29 // Jean-Christophe David, CEA-Saclay, France << 29 // Alain Boudard, CEA
30 // Pekka Kaitaniemi, CEA-Saclay, France, and H << 30 // Sylvie Leray, CEA
31 // Sylvie Leray, CEA-Saclay, France << 31 // Joseph Cugnon, University of Liege
32 // Davide Mancusi, CEA-Saclay, France <<
33 // 32 //
34 #define INCLXX_IN_GEANT4_MODE 1 33 #define INCLXX_IN_GEANT4_MODE 1
35 34
36 #include "globals.hh" 35 #include "globals.hh"
37 36
38 /** \file G4INCLParticleSampler.cc 37 /** \file G4INCLParticleSampler.cc
39 * \brief Class for sampling particles in a nu 38 * \brief Class for sampling particles in a nucleus
40 * 39 *
41 * \date 18 July 2012 40 * \date 18 July 2012
42 * \author Davide Mancusi 41 * \author Davide Mancusi
43 */ 42 */
44 43
45 #include "G4INCLParticleSampler.hh" 44 #include "G4INCLParticleSampler.hh"
46 #include "G4INCLParticleTable.hh" <<
47 #include "G4INCLNuclearDensityFactory.hh" <<
48 45
49 namespace G4INCL { 46 namespace G4INCL {
50 47
51 ParticleSampler::ParticleSampler(const G4int << 48 ParticleSampler::ParticleSampler(const G4int A, const G4int Z, InverseInterpolationTable const * const rCDFTable, InverseInterpolationTable const * const pCDFTable) :
52 sampleOneProton(&ParticleSampler::sampleOn << 49 sampleOneParticle(&ParticleSampler::sampleOneParticleWithoutRPCorrelation),
53 sampleOneNeutron(&ParticleSampler::sampleO <<
54 theA(A), 50 theA(A),
55 theZ(Z), 51 theZ(Z),
56 theS(S), << 52 theRCDFTable(rCDFTable),
>> 53 thePCDFTable(pCDFTable),
57 theDensity(NULL), 54 theDensity(NULL),
58 thePotential(NULL) 55 thePotential(NULL)
59 { << 56 {}
60 std::fill(theRCDFTable, theRCDFTable + Unk <<
61 std::fill(thePCDFTable, thePCDFTable + Unk <<
62 std::fill(rpCorrelationCoefficient, rpCorr <<
63 rpCorrelationCoefficient[Proton] = Particl <<
64 rpCorrelationCoefficient[Neutron] = Partic <<
65 rpCorrelationCoefficient[Lambda] = Particl <<
66 } <<
67 57
68 ParticleSampler::~ParticleSampler() { 58 ParticleSampler::~ParticleSampler() {
69 } 59 }
70 60
71 void ParticleSampler::setDensity(NuclearDens 61 void ParticleSampler::setDensity(NuclearDensity const * const d) {
72 theDensity = d; 62 theDensity = d;
73 updateSampleOneParticleMethods(); << 63 updateSampleOneParticleMethod();
74 } 64 }
75 65
76 void ParticleSampler::setPotential(NuclearPo 66 void ParticleSampler::setPotential(NuclearPotential::INuclearPotential const * const p) {
77 thePotential = p; 67 thePotential = p;
78 updateSampleOneParticleMethods(); << 68 updateSampleOneParticleMethod();
79 } 69 }
80 70
81 void ParticleSampler::updateSampleOneParticl << 71 void ParticleSampler::updateSampleOneParticleMethod() {
82 if(theDensity && thePotential) { << 72 if(theDensity && thePotential)
83 if(rpCorrelationCoefficient[Proton]>0.99 << 73 sampleOneParticle = &ParticleSampler::sampleOneParticleWithRPCorrelation;
84 sampleOneProton = &ParticleSampler::sa << 74 else
85 } else { << 75 sampleOneParticle = &ParticleSampler::sampleOneParticleWithoutRPCorrelation;
86 sampleOneProton = &ParticleSampler::sa <<
87 } <<
88 if(rpCorrelationCoefficient[Neutron]>0.9 <<
89 sampleOneNeutron = &ParticleSampler::s <<
90 } else { <<
91 sampleOneNeutron = &ParticleSampler::s <<
92 } <<
93 } else { <<
94 sampleOneProton = &ParticleSampler::samp <<
95 sampleOneNeutron = &ParticleSampler::sam <<
96 } <<
97 } 76 }
98 77
99 ParticleList ParticleSampler::sampleParticle << 78 ParticleList ParticleSampler::sampleParticles(const ThreeVector &position) const {
100 ParticleList aList; << 79 ParticleList theList;
101 sampleParticlesIntoList(position, aList); <<
102 return aList; <<
103 } <<
104 <<
105 void ParticleSampler::sampleParticlesIntoLis <<
106 <<
107 if(sampleOneProton == &ParticleSampler::sa <<
108 // sampling without correlation, we need <<
109 theRCDFTable[Proton] = NuclearDensityFac <<
110 thePCDFTable[Proton] = NuclearDensityFac <<
111 theRCDFTable[Neutron] = NuclearDensityFa <<
112 thePCDFTable[Neutron] = NuclearDensityFa <<
113 theRCDFTable[Lambda] = NuclearDensityFac <<
114 thePCDFTable[Lambda] = NuclearDensityFac <<
115 } <<
116 <<
117 theList.resize(theA); <<
118 if(theA > 2) { 80 if(theA > 2) {
119 ParticleType type = Proton; 81 ParticleType type = Proton;
120 ParticleSamplerMethod sampleOneParticle << 82 for(G4int i = 1; i <= theA; ++i) {
121 for(G4int i = 0; i < theA; ++i) { << 83 if(i == (theZ + 1)) // Nucleons [Z+1..A] are neutrons
122 if(i == theZ) { // Nucleons [Z..A-1] a << 84 type = Neutron;
123 type = Lambda; << 85 Particle *p = (this->*(this->sampleOneParticle))(type);
124 sampleOneParticle = sampleOneNeutron <<
125 } <<
126 if(i == theZ - theS) type = Neutron; <<
127 Particle *p = (this->*sampleOneParticl <<
128 p->setPosition(position + p->getPositi 86 p->setPosition(position + p->getPosition());
129 theList[i] = p; << 87 theList.push_back(p);
130 } 88 }
131 } else { 89 } else {
132 // For deuterons, only sample the proton 90 // For deuterons, only sample the proton position and momentum. The
133 // neutron position and momenta are dete 91 // neutron position and momenta are determined by the conditions of
134 // vanishing CM position and total momen 92 // vanishing CM position and total momentum.
135 // assert(theZ==1); 93 // assert(theZ==1);
136 Particle *aProton = (this->*(this->sampl << 94 Particle *aProton = (this->*(this->sampleOneParticle))(Proton);
137 Particle *aNeutron = new Particle(Neutro 95 Particle *aNeutron = new Particle(Neutron, -aProton->getMomentum(), position - aProton->getPosition());
138 aProton->setPosition(position + aProton- 96 aProton->setPosition(position + aProton->getPosition());
139 theList[0] = aProton; << 97 theList.push_back(aProton);
140 theList[1] = aNeutron; << 98 theList.push_back(aNeutron);
141 } 99 }
>> 100
>> 101 return theList;
142 } 102 }
143 103
144 Particle *ParticleSampler::sampleOneParticle 104 Particle *ParticleSampler::sampleOneParticleWithRPCorrelation(const ParticleType t) const {
145 // assert(theDensity && thePotential); 105 // assert(theDensity && thePotential);
146 const G4double theFermiMomentum = thePoten 106 const G4double theFermiMomentum = thePotential->getFermiMomentum(t);
147 const ThreeVector momentumVector = Random: 107 const ThreeVector momentumVector = Random::sphereVector(theFermiMomentum);
148 const G4double momentumAbs = momentumVecto << 108 const G4double momentumRatio = momentumVector.mag()/theFermiMomentum;
149 const G4double momentumRatio = momentumAbs << 109 const ThreeVector positionVector = Random::sphereVector(theDensity->getMaxRFromP(momentumRatio));
150 const G4double reflectionRadius = theDensi << 110 return new Particle(t, momentumVector, positionVector);
151 const ThreeVector positionVector = Random: <<
152 Particle *aParticle = new Particle(t, mome <<
153 aParticle->setUncorrelatedMomentum(momentu <<
154 return aParticle; <<
155 } 111 }
156 112
157 Particle *ParticleSampler::sampleOneParticle 113 Particle *ParticleSampler::sampleOneParticleWithoutRPCorrelation(const ParticleType t) const {
158 const G4double position = (*(theRCDFTable[ << 114 const G4double position = (*theRCDFTable)(Random::shoot());
159 const G4double momentum = (*(thePCDFTable[ << 115 const G4double momentum = (*thePCDFTable)(Random::shoot());
160 ThreeVector positionVector = Random::normV 116 ThreeVector positionVector = Random::normVector(position);
161 ThreeVector momentumVector = Random::normV 117 ThreeVector momentumVector = Random::normVector(momentum);
162 return new Particle(t, momentumVector, pos 118 return new Particle(t, momentumVector, positionVector);
163 } <<
164 <<
165 Particle *ParticleSampler::sampleOneParticle <<
166 // assert(theDensity && thePotential); <<
167 std::pair<G4double,G4double> ranNumbers = <<
168 const G4double x = Math::pow13(ranNumbers. <<
169 const G4double y = Math::pow13(ranNumbers. <<
170 const G4double theFermiMomentum = thePoten <<
171 const ThreeVector momentumVector = Random: <<
172 const G4double reflectionRadius = theDensi <<
173 const ThreeVector positionVector = Random: <<
174 Particle *aParticle = new Particle(t, mome <<
175 aParticle->setUncorrelatedMomentum(x*theFe <<
176 return aParticle; <<
177 } 119 }
178 120
179 } 121 }
180 122
181 123