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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 // Alain Boudard, CEA-Saclay, France
28 // Joseph Cugnon, University of Liege, Belgium 28 // Joseph Cugnon, University of Liege, Belgium
29 // Jean-Christophe David, CEA-Saclay, France 29 // Jean-Christophe David, CEA-Saclay, France
30 // Pekka Kaitaniemi, CEA-Saclay, France, and H 30 // Pekka Kaitaniemi, CEA-Saclay, France, and Helsinki Institute of Physics, Finland
31 // Sylvie Leray, CEA-Saclay, France 31 // Sylvie Leray, CEA-Saclay, France
32 // Davide Mancusi, CEA-Saclay, France 32 // Davide Mancusi, CEA-Saclay, France
33 // 33 //
34 #define INCLXX_IN_GEANT4_MODE 1 34 #define INCLXX_IN_GEANT4_MODE 1
35 35
36 #include "globals.hh" 36 #include "globals.hh"
37 37
38 /* \file G4INCLInteractionAvatar.hh 38 /* \file G4INCLInteractionAvatar.hh
39 * \brief Virtual class for interaction avatar 39 * \brief Virtual class for interaction avatars.
40 * 40 *
41 * This class is inherited by decay and collis 41 * This class is inherited by decay and collision avatars. The goal is to
42 * provide a uniform treatment of common physi 42 * provide a uniform treatment of common physics, such as Pauli blocking,
43 * enforcement of energy conservation, etc. 43 * enforcement of energy conservation, etc.
44 * 44 *
45 * \date Mar 1st, 2011 45 * \date Mar 1st, 2011
46 * \author Davide Mancusi 46 * \author Davide Mancusi
47 */ 47 */
48 48
49 #ifndef G4INCLINTERACTIONAVATAR_HH_ 49 #ifndef G4INCLINTERACTIONAVATAR_HH_
50 #define G4INCLINTERACTIONAVATAR_HH_ 50 #define G4INCLINTERACTIONAVATAR_HH_
51 51
52 #include "G4INCLIAvatar.hh" 52 #include "G4INCLIAvatar.hh"
53 #include "G4INCLNucleus.hh" 53 #include "G4INCLNucleus.hh"
54 #include "G4INCLFinalState.hh" 54 #include "G4INCLFinalState.hh"
55 #include "G4INCLRootFinder.hh" 55 #include "G4INCLRootFinder.hh"
56 #include "G4INCLKinematicsUtils.hh" 56 #include "G4INCLKinematicsUtils.hh"
57 #include "G4INCLAllocationPool.hh" 57 #include "G4INCLAllocationPool.hh"
58 58
59 namespace G4INCL { 59 namespace G4INCL {
60 60
61 class InteractionAvatar : public G4INCL::IAv 61 class InteractionAvatar : public G4INCL::IAvatar {
62 public: 62 public:
63 InteractionAvatar(G4double, G4INCL::Nucl 63 InteractionAvatar(G4double, G4INCL::Nucleus*, G4INCL::Particle*);
64 InteractionAvatar(G4double, G4INCL::Nucl 64 InteractionAvatar(G4double, G4INCL::Nucleus*, G4INCL::Particle*, G4INCL::Particle*);
65 virtual ~InteractionAvatar(); 65 virtual ~InteractionAvatar();
66 66
67 /// \brief Target accuracy in the determ 67 /// \brief Target accuracy in the determination of the local-energy Q-value
68 static const G4double locEAccuracy; 68 static const G4double locEAccuracy;
69 /// \brief Max number of iterations for 69 /// \brief Max number of iterations for the determination of the local-energy Q-value
70 static const G4int maxIterLocE; 70 static const G4int maxIterLocE;
71 71
72 /// \brief Release the memory allocated 72 /// \brief Release the memory allocated for the backup particles
73 static void deleteBackupParticles(); 73 static void deleteBackupParticles();
74 74
75 protected: 75 protected:
76 virtual G4INCL::IChannel* getChannel() = 76 virtual G4INCL::IChannel* getChannel() = 0;
77 77
78 G4bool bringParticleInside(Particle * co 78 G4bool bringParticleInside(Particle * const p);
79 79
80 /** \brief Apply local-energy transforma 80 /** \brief Apply local-energy transformation, if appropriate
81 * 81 *
82 * \param p particle to apply the transf 82 * \param p particle to apply the transformation to
83 */ 83 */
84 void preInteractionLocalEnergy(Particle 84 void preInteractionLocalEnergy(Particle * const p);
85 85
86 /** \brief Store the state of the partic 86 /** \brief Store the state of the particles before the interaction
87 * 87 *
88 * If the interaction cannot be realised 88 * If the interaction cannot be realised for any reason, we will need to
89 * restore the particle state as it was 89 * restore the particle state as it was before. This is done by calling
90 * the restoreParticles() method. 90 * the restoreParticles() method.
91 */ 91 */
92 void preInteractionBlocking(); 92 void preInteractionBlocking();
93 93
94 void preInteraction(); 94 void preInteraction();
95 void postInteraction(FinalState *); 95 void postInteraction(FinalState *);
96 96
97 /** \brief Restore the state of both par 97 /** \brief Restore the state of both particles.
98 * 98 *
99 * The state must first be stored by cal 99 * The state must first be stored by calling preInteractionBlocking().
100 */ 100 */
101 void restoreParticles() const; 101 void restoreParticles() const;
102 102
103 /// \brief true if the given avatar shou 103 /// \brief true if the given avatar should use local energy
104 G4bool shouldUseLocalEnergy() const; 104 G4bool shouldUseLocalEnergy() const;
105 105
106 Nucleus *theNucleus; 106 Nucleus *theNucleus;
107 Particle *particle1, *particle2; 107 Particle *particle1, *particle2;
108 static G4ThreadLocal Particle *backupPar 108 static G4ThreadLocal Particle *backupParticle1, *backupParticle2;
109 ThreeVector boostVector; 109 ThreeVector boostVector;
110 G4double oldTotalEnergy, oldXSec; 110 G4double oldTotalEnergy, oldXSec;
111 G4bool isPiN; 111 G4bool isPiN;
112 G4double weight; <<
113 112
114 private: 113 private:
115 /// \brief RootFunctor-derived object fo 114 /// \brief RootFunctor-derived object for enforcing energy conservation in N-N.
116 class ViolationEMomentumFunctor : public 115 class ViolationEMomentumFunctor : public RootFunctor {
117 public: 116 public:
118 /** \brief Prepare for calling the ( 117 /** \brief Prepare for calling the () operator and scaleParticleMomenta
119 * 118 *
120 * The constructor sets the private 119 * The constructor sets the private class members.
121 */ 120 */
122 ViolationEMomentumFunctor(Nucleus * 121 ViolationEMomentumFunctor(Nucleus * const nucleus, ParticleList const &modAndCre, const G4double totalEnergyBeforeInteraction, ThreeVector const &boost, const G4bool localE);
123 virtual ~ViolationEMomentumFunctor() 122 virtual ~ViolationEMomentumFunctor();
124 123
125 /** \brief Compute the energy-conser 124 /** \brief Compute the energy-conservation violation.
126 * 125 *
127 * \param x scale factor for the par 126 * \param x scale factor for the particle momenta
128 * \return the energy-conservation v 127 * \return the energy-conservation violation
129 */ 128 */
130 G4double operator()(const G4double x 129 G4double operator()(const G4double x) const;
131 130
132 /// \brief Clean up after root findi 131 /// \brief Clean up after root finding
133 void cleanUp(const G4bool success) c 132 void cleanUp(const G4bool success) const;
134 133
135 private: 134 private:
136 /// \brief List of final-state parti 135 /// \brief List of final-state particles.
137 ParticleList finalParticles; 136 ParticleList finalParticles;
138 /// \brief CM particle momenta, as d 137 /// \brief CM particle momenta, as determined by the channel.
139 std::vector<ThreeVector> particleMom 138 std::vector<ThreeVector> particleMomenta;
140 /// \brief Total energy before the i 139 /// \brief Total energy before the interaction.
141 G4double initialEnergy; 140 G4double initialEnergy;
142 /// \brief Pointer to the nucleus 141 /// \brief Pointer to the nucleus
143 Nucleus *theNucleus; 142 Nucleus *theNucleus;
144 /// \brief Pointer to the boost vect 143 /// \brief Pointer to the boost vector
145 ThreeVector const &boostVector; 144 ThreeVector const &boostVector;
146 145
147 /// \brief True if we should use loc 146 /// \brief True if we should use local energy
148 const G4bool shouldUseLocalEnergy; 147 const G4bool shouldUseLocalEnergy;
149 148
150 /** \brief Scale the momenta of the 149 /** \brief Scale the momenta of the modified and created particles.
151 * 150 *
152 * Set the momenta of the modified a 151 * Set the momenta of the modified and created particles to alpha times
153 * their original momenta (stored in 152 * their original momenta (stored in particleMomenta). You must call
154 * init() before using this method. 153 * init() before using this method.
155 * 154 *
156 * \param alpha scale factor 155 * \param alpha scale factor
157 */ 156 */
158 void scaleParticleMomenta(const G4do 157 void scaleParticleMomenta(const G4double alpha) const;
159 158
160 }; 159 };
161 160
162 /// \brief RootFunctor-derived object fo 161 /// \brief RootFunctor-derived object for enforcing energy conservation in delta production
163 class ViolationEEnergyFunctor : public R 162 class ViolationEEnergyFunctor : public RootFunctor {
164 public: 163 public:
165 /** \brief Prepare for calling the ( 164 /** \brief Prepare for calling the () operator and setParticleEnergy
166 * 165 *
167 * The constructor sets the private 166 * The constructor sets the private class members.
168 */ 167 */
169 ViolationEEnergyFunctor(Nucleus * co 168 ViolationEEnergyFunctor(Nucleus * const nucleus, Particle * const aParticle, const G4double totalEnergyBeforeInteraction, const G4bool localE);
170 virtual ~ViolationEEnergyFunctor() { 169 virtual ~ViolationEEnergyFunctor() {}
171 170
172 /** \brief Compute the energy-conser 171 /** \brief Compute the energy-conservation violation.
173 * 172 *
174 * \param x scale factor for the par 173 * \param x scale factor for the particle energy
175 * \return the energy-conservation v 174 * \return the energy-conservation violation
176 */ 175 */
177 G4double operator()(const G4double x 176 G4double operator()(const G4double x) const;
178 177
179 /// \brief Clean up after root findi 178 /// \brief Clean up after root finding
180 void cleanUp(const G4bool success) c 179 void cleanUp(const G4bool success) const;
181 180
182 /** \brief Set the energy of the par 181 /** \brief Set the energy of the particle.
183 * 182 *
184 * \param energy 183 * \param energy
185 */ 184 */
186 void setParticleEnergy(const G4doubl 185 void setParticleEnergy(const G4double energy) const;
187 186
188 private: 187 private:
189 /// \brief Total energy before the i 188 /// \brief Total energy before the interaction.
190 G4double initialEnergy; 189 G4double initialEnergy;
191 /// \brief Pointer to the nucleus. 190 /// \brief Pointer to the nucleus.
192 Nucleus *theNucleus; 191 Nucleus *theNucleus;
193 /// \brief The final-state particle. 192 /// \brief The final-state particle.
194 Particle *theParticle; 193 Particle *theParticle;
195 /// \brief The initial energy of the 194 /// \brief The initial energy of the particle.
196 G4double theEnergy; 195 G4double theEnergy;
197 /// \brief The initial momentum of t 196 /// \brief The initial momentum of the particle.
198 ThreeVector theMomentum; 197 ThreeVector theMomentum;
199 /** \brief Threshold for the energy 198 /** \brief Threshold for the energy of the particle
200 * 199 *
201 * The particle (a delta) cannot hav 200 * The particle (a delta) cannot have less than this energy.
202 */ 201 */
203 G4double energyThreshold; 202 G4double energyThreshold;
204 /// \brief Whether we should use loc 203 /// \brief Whether we should use local energy
205 const G4bool shouldUseLocalEnergy; 204 const G4bool shouldUseLocalEnergy;
206 }; 205 };
207 206
208 RootFunctor *violationEFunctor; 207 RootFunctor *violationEFunctor;
209 208
210 protected: 209 protected:
211 /** \brief Enforce energy conservation. 210 /** \brief Enforce energy conservation.
212 * 211 *
213 * Final states generated by the channel 212 * Final states generated by the channels might violate energy conservation
214 * because of different reasons (energy- 213 * because of different reasons (energy-dependent potentials, local
215 * energy...). This conservation law mus 214 * energy...). This conservation law must therefore be enforced by hand. We
216 * do so by rescaling the momenta of the 215 * do so by rescaling the momenta of the final-state particles in the CM
217 * frame. If this turns out to be imposs 216 * frame. If this turns out to be impossible, this method returns false.
218 * 217 *
219 * \return true if the algorithm succeed 218 * \return true if the algorithm succeeded
220 */ 219 */
221 G4bool enforceEnergyConservation(FinalSt 220 G4bool enforceEnergyConservation(FinalState * const fs);
222 221
223 ParticleList modified, created, modified << 222 ParticleList modified, created, modifiedAndCreated;
224 223
225 INCL_DECLARE_ALLOCATION_POOL(Interaction 224 INCL_DECLARE_ALLOCATION_POOL(InteractionAvatar)
226 }; 225 };
227 226
228 } 227 }
229 228
230 #endif /* G4INCLINTERACTIONAVATAR_HH_ */ 229 #endif /* G4INCLINTERACTIONAVATAR_HH_ */
231 230