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25 //
26 // G4ParticleHPThermalScattering
27 //
28 // Class Description:
29 //
30 // Final State Generators for a high precision (based on evaluated data
31 // libraries) description of themal neutron scattering below 4 eV;
32 // Based on Thermal neutron scattering files
33 // from the evaluated nuclear data files ENDF/B-VI, Release2
34 // To be used in your physics list in case you need this physics.
35 // In this case you want to register an object of this class with
36 // the corresponding process.
37 //
38 // Author: T. Koi (SLAC/SCCS), November-2006 - First implementation.
39 // P. Arce (CIEMAT), June-2014 - Conversion neutron_hp to particle_hp
40 // --------------------------------------------------------------------
41 #ifndef G4ParticleHPThermalScattering_h
42 #define G4ParticleHPThermalScattering_h 1
43
44 #include "G4HadronicInteraction.hh"
45 #include "G4ParticleHPThermalScatteringNames.hh"
46 #include "globals.hh"
47
48 class G4ParticleHPThermalScatteringData;
49 class G4ParticleHPElastic;
50
51 struct E_isoAng
52 {
53 G4double energy;
54 G4int n;
55 std::vector<G4double> isoAngle;
56 E_isoAng()
57 {
58 energy = 0.0;
59 n = 0;
60 };
61 };
62
63 struct E_P_E_isoAng
64 {
65 G4double energy;
66 G4int n;
67 std::vector<G4double> prob;
68 std::vector<E_isoAng*> vE_isoAngle;
69 G4double sum_of_probXdEs; // should be close to 1
70 std::vector<G4double> secondary_energy_cdf;
71 std::vector<G4double> secondary_energy_pdf;
72 std::vector<G4double> secondary_energy_value;
73 G4int secondary_energy_cdf_size;
74 E_P_E_isoAng()
75 {
76 energy = 0.0;
77 n = 0;
78 sum_of_probXdEs = 0.0;
79 secondary_energy_cdf_size = 0;
80 };
81 };
82
83 class G4ParticleHPThermalScattering : public G4HadronicInteraction
84 {
85 public:
86
87 G4ParticleHPThermalScattering();
88
89 ~G4ParticleHPThermalScattering() override;
90
91 G4HadFinalState* ApplyYourself(const G4HadProjectile& aTrack,
92 G4Nucleus& aTargetNucleus) override;
93
94 const std::pair<G4double, G4double> GetFatalEnergyCheckLevels() const override;
95
96 // For user prepared thermal files
97 // Name of G4Element , Name of NDL file
98 void AddUserThermalScatteringFile(const G4String&, const G4String&);
99
100 void BuildPhysicsTable(const G4ParticleDefinition&) override;
101
102 void ModelDescription(std::ostream& outFile) const override;
103
104 private:
105
106 void clearCurrentFSData();
107
108 G4double getMu(E_isoAng*);
109 G4double getMu(G4double rndm1, G4double rndm2, E_isoAng* anEPM);
110
111 std::pair<G4double, G4double> find_LH(G4double, std::vector<G4double>*);
112 G4double get_linear_interpolated(G4double, std::pair<G4double, G4double>,
113 std::pair<G4double, G4double>);
114
115 E_isoAng create_E_isoAng_from_energy(G4double, std::vector<E_isoAng*>*);
116
117 G4double get_secondary_energy_from_E_P_E_isoAng(G4double random, E_P_E_isoAng* anE_P_E_isoAng);
118
119 std::pair<G4double, G4double> sample_inelastic_E_mu(G4double pE,
120 std::vector<E_P_E_isoAng*>* vNEP_EPM);
121 std::pair<G4double, G4int> sample_inelastic_E(G4double rndm1, G4double rndm2,
122 E_P_E_isoAng* anE_P_E_isoAng);
123
124 std::pair<G4double, E_isoAng>
125 create_sE_and_EPM_from_pE_and_vE_P_E_isoAng(G4double, G4double, std::vector<E_P_E_isoAng*>*);
126
127 void buildPhysicsTable();
128 G4int getTS_ID(const G4Material*, const G4Element*);
129
130 G4bool check_E_isoAng(E_isoAng*);
131
132 private:
133
134 G4ParticleHPThermalScatteringNames names;
135
136 // Coherent Elastic
137 // ElementID temp BraggE cumulativeP
138 std::map<G4int, std::map<G4double, std::vector<std::pair<G4double, G4double>*>*>*>* coherentFSs{nullptr};
139 std::map<G4double, std::vector<std::pair<G4double, G4double>*>*>* readACoherentFSDATA(const G4String&);
140
141 // Incoherent Elastic
142 // ElementID temp aFS for this temp (and this element)
143 std::map<G4int, std::map<G4double, std::vector<E_isoAng*>*>*>* incoherentFSs{nullptr};
144 std::map<G4double, std::vector<E_isoAng*>*>* readAnIncoherentFSDATA(const G4String&);
145 E_isoAng* readAnE_isoAng(std::istream*);
146
147 // Inelastic
148 // ElementID temp aFS for this temp (and this element)
149 std::map<G4int, std::map<G4double, std::vector<E_P_E_isoAng*>*>*>* inelasticFSs{nullptr};
150 std::map<G4double, std::vector<E_P_E_isoAng*>*>* readAnInelasticFSDATA(const G4String&);
151 E_P_E_isoAng* readAnE_P_E_isoAng(std::istream*);
152
153 G4ParticleHPThermalScatteringData* theXSection;
154
155 G4ParticleHPElastic* theHPElastic;
156
157 std::map<std::pair<const G4Material*, const G4Element*>, G4int> dic;
158
159 // In order to judge whether the rebuilding of physics table is a necessity or not
160 std::size_t nMaterial;
161 std::size_t nElement;
162 };
163
164 #endif
165