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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 #include "G4INCLKinematicsUtils.hh" 37 #include "G4INCLKinematicsUtils.hh"
39 #include "G4INCLParticleTable.hh" 38 #include "G4INCLParticleTable.hh"
40 39
41 namespace G4INCL { 40 namespace G4INCL {
42 41
43 namespace KinematicsUtils { 42 namespace KinematicsUtils {
44 43
45 G4double fiveParFit (const G4double a, const <<
46 return a+b*std::pow(x, c)+d*std::log(x)+e* <<
47 } <<
48 <<
49 G4double compute_xs(const std::vector<G4doub <<
50 G4double sigma = 0.; <<
51 G4double Ethreshold = 0.0; <<
52 if(coefficients.size() == 6){ <<
53 Ethreshold = coefficients[5]; <<
54 if(Ethreshold >= 5){ //there are no <<
55 if(pLab > Ethreshold){ // E is E <<
56 return 0.; <<
57 } <<
58 } <<
59 else{ <<
60 if(pLab < Ethreshold){ <<
61 return 0.; <<
62 } <<
63 } <<
64 } <<
65 <<
66 sigma = fiveParFit(coefficients[0],coeff <<
67 if(sigma < 0.){ <<
68 return 0.; <<
69 }; <<
70 return sigma; <<
71 } <<
72 <<
73 void transformToLocalEnergyFrame(Nucleus con 44 void transformToLocalEnergyFrame(Nucleus const * const n, Particle * const p) {
74 // assert(!p->isMeson() && !p->isPhoton() && ! <<
75 const G4double localEnergy = getLocalEnerg 45 const G4double localEnergy = getLocalEnergy(n, p);
76 const G4double localTotalEnergy = p->getEn 46 const G4double localTotalEnergy = p->getEnergy() - localEnergy;
77 p->setEnergy(localTotalEnergy); 47 p->setEnergy(localTotalEnergy);
78 p->adjustMomentumFromEnergy(); 48 p->adjustMomentumFromEnergy();
79 } 49 }
80 50
81 G4double getLocalEnergy(Nucleus const * cons 51 G4double getLocalEnergy(Nucleus const * const n, Particle * const p) {
82 // assert(!p->isMeson() && !p->isPhoton() && ! << 52 // assert(!p->isPion()); // No local energy for pions
>> 53
83 G4double vloc = 0.0; 54 G4double vloc = 0.0;
84 const G4double r = p->getPosition().mag(); 55 const G4double r = p->getPosition().mag();
85 const G4double mass = p->getMass(); 56 const G4double mass = p->getMass();
86 57
87 // Local energy is constant outside the su 58 // Local energy is constant outside the surface
88 if(r > n->getUniverseRadius()) { 59 if(r > n->getUniverseRadius()) {
89 INCL_WARN("Tried to evaluate local energ 60 INCL_WARN("Tried to evaluate local energy for a particle outside the maximum radius."
90 << '\n' << p->print() << '\n' << 61 << std::endl << p->print() << std::endl
91 << "Maximum radius = " << n->getDe << 62 << "Maximum radius = " << n->getDensity()->getMaximumRadius() << std::endl
92 << "Universe radius = " << n->getU << 63 << "Universe radius = " << n->getUniverseRadius() << std::endl);
93 return 0.0; 64 return 0.0;
94 } 65 }
95 66
96 G4double pfl0 = 0.0; 67 G4double pfl0 = 0.0;
97 const ParticleType t = p->getType(); 68 const ParticleType t = p->getType();
98 const G4double kinE = p->getKineticEnergy( 69 const G4double kinE = p->getKineticEnergy();
99 if(kinE <= n->getPotential()->getFermiEner 70 if(kinE <= n->getPotential()->getFermiEnergy(t)) {
100 pfl0 = n->getPotential()->getFermiMoment 71 pfl0 = n->getPotential()->getFermiMomentum(p);
101 } else { 72 } else {
102 const G4double tf0 = p->getPotentialEner 73 const G4double tf0 = p->getPotentialEnergy() - n->getPotential()->getSeparationEnergy(p);
103 if(tf0<0.0) return 0.0; 74 if(tf0<0.0) return 0.0;
104 pfl0 = std::sqrt(tf0*(tf0 + 2.0*mass)); << 75 pfl0 = std::sqrt(tf0*(tf0 + 2.0*mass));
105 } 76 }
106 const G4double pReflection = p->getReflect 77 const G4double pReflection = p->getReflectionMomentum()/pfl0;
107 const G4double reflectionRadius = n->getDe 78 const G4double reflectionRadius = n->getDensity()->getMaxRFromP(p->getType(), pReflection);
108 const G4double pNominal = p->getMomentum() 79 const G4double pNominal = p->getMomentum().mag()/pfl0;
109 const G4double nominalReflectionRadius = n 80 const G4double nominalReflectionRadius = n->getDensity()->getMaxRFromP(p->getType(), pNominal);
110 const G4double pl = pfl0*n->getDensity()-> 81 const G4double pl = pfl0*n->getDensity()->getMinPFromR(t, r*nominalReflectionRadius/reflectionRadius);
111 vloc = std::sqrt(pl*pl + mass*mass) - mass 82 vloc = std::sqrt(pl*pl + mass*mass) - mass;
112 83
113 return vloc; 84 return vloc;
114 } 85 }
115 86
116 ThreeVector makeBoostVector(Particle const * 87 ThreeVector makeBoostVector(Particle const * const p1, Particle const * const p2){
117 const G4double totalEnergy = p1->getEnergy 88 const G4double totalEnergy = p1->getEnergy() + p2->getEnergy();
118 return ((p1->getMomentum() + p2->getMoment 89 return ((p1->getMomentum() + p2->getMomentum())/totalEnergy);
119 } 90 }
120 91
121 G4double totalEnergyInCM(Particle const * co 92 G4double totalEnergyInCM(Particle const * const p1, Particle const * const p2){
122 return std::sqrt(squareTotalEnergyInCM(p1, 93 return std::sqrt(squareTotalEnergyInCM(p1,p2));
123 } 94 }
124 95
125 G4double squareTotalEnergyInCM(Particle cons 96 G4double squareTotalEnergyInCM(Particle const * const p1, Particle const * const p2) {
126 G4double beta2 = makeBoostVector(p1, p2).m 97 G4double beta2 = makeBoostVector(p1, p2).mag2();
127 if(beta2 > 1.0) { 98 if(beta2 > 1.0) {
128 INCL_ERROR("squareTotalEnergyInCM: beta2 << 99 INCL_ERROR("squareTotalEnergyInCM: beta2 == " << beta2 << " > 1.0" << std::endl);
129 beta2 = 0.0; 100 beta2 = 0.0;
130 } 101 }
131 return (1.0 - beta2)*std::pow(p1->getEnerg 102 return (1.0 - beta2)*std::pow(p1->getEnergy() + p2->getEnergy(), 2);
132 } 103 }
133 104
134 G4double momentumInCM(Particle const * const 105 G4double momentumInCM(Particle const * const p1, Particle const * const p2) {
135 const G4double m1sq = std::pow(p1->getMass 106 const G4double m1sq = std::pow(p1->getMass(),2);
136 const G4double m2sq = std::pow(p2->getMass 107 const G4double m2sq = std::pow(p2->getMass(),2);
137 const G4double z = p1->getEnergy()*p2->get 108 const G4double z = p1->getEnergy()*p2->getEnergy() - p1->getMomentum().dot(p2->getMomentum());
138 G4double pcm2 = (z*z-m1sq*m2sq)/(2*z+m1sq+ 109 G4double pcm2 = (z*z-m1sq*m2sq)/(2*z+m1sq+m2sq);
139 if(pcm2 < 0.0) { 110 if(pcm2 < 0.0) {
140 INCL_ERROR("momentumInCM: pcm2 == " << p << 111 INCL_ERROR("momentumInCM: pcm2 == " << pcm2 << " < 0.0" << std::endl);
141 pcm2 = 0.0; 112 pcm2 = 0.0;
142 } 113 }
143 return std::sqrt(pcm2); 114 return std::sqrt(pcm2);
144 } 115 }
145 116
146 G4double momentumInCM(const G4double E, cons 117 G4double momentumInCM(const G4double E, const G4double M1, const G4double M2) {
147 return 0.5*std::sqrt((E*E - std::pow(M1 + 118 return 0.5*std::sqrt((E*E - std::pow(M1 + M2, 2))
148 *(E*E - std::pow(M1 - M2, 2)))/E; 119 *(E*E - std::pow(M1 - M2, 2)))/E;
149 } 120 }
150 121
151 G4double momentumInLab(const G4double s, con 122 G4double momentumInLab(const G4double s, const G4double m1, const G4double m2) {
152 const G4double m1sq = m1*m1; 123 const G4double m1sq = m1*m1;
153 const G4double m2sq = m2*m2; 124 const G4double m2sq = m2*m2;
154 G4double plab2 = (s*s-2*s*(m1sq+m2sq)+(m1s 125 G4double plab2 = (s*s-2*s*(m1sq+m2sq)+(m1sq-m2sq)*(m1sq-m2sq))/(4*m2sq);
155 if(plab2 < 0.0) { 126 if(plab2 < 0.0) {
156 INCL_ERROR("momentumInLab: plab2 == " << << 127 INCL_ERROR("momentumInLab: plab2 == " << plab2 << " < 0.0; m1sq == " << m1sq << "; m2sq == " << m2sq << "; s == " << s << std::endl);
157 plab2 = 0.0; 128 plab2 = 0.0;
158 } 129 }
159 return std::sqrt(plab2); 130 return std::sqrt(plab2);
160 } 131 }
161 132
162 G4double momentumInLab(Particle const * cons 133 G4double momentumInLab(Particle const * const p1, Particle const * const p2) {
163 const G4double m1 = p1->getMass(); 134 const G4double m1 = p1->getMass();
164 const G4double m2 = p2->getMass(); 135 const G4double m2 = p2->getMass();
165 const G4double s = squareTotalEnergyInCM(p 136 const G4double s = squareTotalEnergyInCM(p1, p2);
166 return momentumInLab(s, m1, m2); 137 return momentumInLab(s, m1, m2);
167 } 138 }
168 139
169 G4double sumTotalEnergies(const ParticleList 140 G4double sumTotalEnergies(const ParticleList &pl) {
170 G4double E = 0.0; 141 G4double E = 0.0;
171 for(ParticleIter i=pl.begin(), e=pl.end(); 142 for(ParticleIter i=pl.begin(), e=pl.end(); i!=e; ++i) {
172 E += (*i)->getEnergy(); 143 E += (*i)->getEnergy();
173 } 144 }
174 return E; 145 return E;
175 } 146 }
176 147
177 ThreeVector sumMomenta(const ParticleList &p 148 ThreeVector sumMomenta(const ParticleList &pl) {
178 ThreeVector p(0.0, 0.0, 0.0); 149 ThreeVector p(0.0, 0.0, 0.0);
179 for(ParticleIter i=pl.begin(), e=pl.end(); 150 for(ParticleIter i=pl.begin(), e=pl.end(); i!=e; ++i) {
180 p += (*i)->getMomentum(); 151 p += (*i)->getMomentum();
181 } 152 }
182 return p; 153 return p;
183 } 154 }
184 155
185 G4double energy(const ThreeVector &p, const 156 G4double energy(const ThreeVector &p, const G4double m) {
186 return std::sqrt(p.mag2() + m*m); 157 return std::sqrt(p.mag2() + m*m);
187 } 158 }
188 159
189 G4double invariantMass(const G4double E, con 160 G4double invariantMass(const G4double E, const ThreeVector & p) {
190 return std::sqrt(squareInvariantMass(E, p) 161 return std::sqrt(squareInvariantMass(E, p));
191 } 162 }
192 163
193 G4double squareInvariantMass(const G4double 164 G4double squareInvariantMass(const G4double E, const ThreeVector & p) {
194 return E*E - p.mag2(); 165 return E*E - p.mag2();
195 } 166 }
196 167
197 G4double gammaFromKineticEnergy(const Partic 168 G4double gammaFromKineticEnergy(const ParticleSpecies &p, const G4double EKin) {
198 G4double mass; 169 G4double mass;
199 if(p.theType==Composite) 170 if(p.theType==Composite)
200 mass = ParticleTable::getTableMass(p.the << 171 mass = ParticleTable::getTableMass(p.theA, p.theZ);
201 else 172 else
202 mass = ParticleTable::getTableParticleMa 173 mass = ParticleTable::getTableParticleMass(p.theType);
203 return (1.+EKin/mass); 174 return (1.+EKin/mass);
204 } 175 }
205 176
206 } 177 }
207 178
208 } 179 }
209 180