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25 //
26 //
27 // P. Arce, June-2014 Conversion neutron_hp to particle_hp
28 // V. Ivanchenko, July-2023 Basic revision of particle HP classes
29 //
30 #ifndef G4ParticleHPEnAngCorrelation_h
31 #define G4ParticleHPEnAngCorrelation_h 1
32
33 #include "G4Cache.hh"
34 #include "G4ParticleHPManager.hh"
35 #include "G4ParticleHPProduct.hh"
36 #include "G4ParticleHPVector.hh"
37 #include "G4ReactionProduct.hh"
38 #include "G4ios.hh"
39 #include "Randomize.hh"
40 #include "globals.hh"
41
42 #include <fstream>
43
44 class G4ParticleDefinition;
45
46 class G4ParticleHPEnAngCorrelation
47 {
48 struct toBeCached
49 {
50 G4ReactionProduct* theProjectileRP{nullptr};
51 G4ReactionProduct* theTarget{nullptr};
52 G4double theTotalMeanEnergy{-1.0};
53 toBeCached() = default;
54 };
55
56 public:
57 explicit G4ParticleHPEnAngCorrelation(const G4ParticleDefinition* proj = nullptr);
58 ~G4ParticleHPEnAngCorrelation();
59
60 void Init(std::istream& aDataFile);
61
62 G4ReactionProduct* SampleOne(G4double anEnergy);
63
64 G4ReactionProductVector* Sample(G4double anEnergy);
65
66 void SetTarget(G4ReactionProduct& aTarget)
67 {
68 fCache.Get().theTarget = &aTarget;
69 for (G4int i = 0; i < nProducts; ++i)
70 theProducts[i].SetTarget(&aTarget);
71 }
72
73 void SetProjectileRP(G4ReactionProduct& aIncidentPart)
74 {
75 fCache.Get().theProjectileRP = &aIncidentPart;
76 for (G4int i = 0; i < nProducts; ++i)
77 theProducts[i].SetProjectileRP(&aIncidentPart);
78 }
79
80 G4bool InCharge() { return inCharge; }
81
82 G4double GetTargetMass() { return targetMass; }
83
84 G4double GetNumberOfProducts() { return nProducts; }
85
86 G4double GetTotalMeanEnergy()
87 {
88 return fCache.Get().theTotalMeanEnergy; // cached in 'sample' call
89 }
90
91 G4ParticleHPEnAngCorrelation(G4ParticleHPEnAngCorrelation&) = delete;
92 G4ParticleHPEnAngCorrelation& operator=
93 (const G4ParticleHPEnAngCorrelation &right) = delete;
94
95 private:
96 const G4ParticleDefinition* theProjectile;
97 G4ParticleHPProduct* theProducts{nullptr};
98
99 G4double targetMass{0.0};
100
101 G4int frameFlag{1}; // =1: Target rest frame; =2: CMS system; incident in lab
102 G4int nProducts{0};
103 G4bool inCharge{false};
104
105 // cached values
106 //
107 G4Cache<toBeCached> fCache;
108 };
109
110 #endif
111