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