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28 // P. Arce, June-2014 Conversion neutron_hp to 28 // P. Arce, June-2014 Conversion neutron_hp to particle_hp
29 // 29 //
30 #include "G4ParticleHPNBodyPhaseSpace.hh" 30 #include "G4ParticleHPNBodyPhaseSpace.hh"
31 <<
32 #include "G4Alpha.hh" <<
33 #include "G4Deuteron.hh" <<
34 #include "G4Electron.hh" <<
35 #include "G4Gamma.hh" <<
36 #include "G4He3.hh" <<
37 #include "G4Neutron.hh" <<
38 #include "G4PhysicalConstants.hh" 31 #include "G4PhysicalConstants.hh"
>> 32 #include "Randomize.hh"
>> 33 #include "G4ThreeVector.hh"
>> 34 #include "G4Gamma.hh"
>> 35 #include "G4Electron.hh"
39 #include "G4Positron.hh" 36 #include "G4Positron.hh"
>> 37 #include "G4Neutron.hh"
40 #include "G4Proton.hh" 38 #include "G4Proton.hh"
41 #include "G4ThreeVector.hh" << 39 #include "G4Deuteron.hh"
42 #include "G4Triton.hh" 40 #include "G4Triton.hh"
43 #include "Randomize.hh" << 41 #include "G4He3.hh"
>> 42 #include "G4Alpha.hh"
44 43
45 G4ReactionProduct* G4ParticleHPNBodyPhaseSpace << 44 G4ReactionProduct * G4ParticleHPNBodyPhaseSpace::Sample(G4double anEnergy, G4double massCode, G4double )
46 <<
47 { 45 {
48 auto result = new G4ReactionProduct; << 46 G4ReactionProduct * result = new G4ReactionProduct;
49 auto Z = static_cast<G4int>(massCode / 1000) << 47 G4int Z = static_cast<G4int>(massCode/1000);
50 auto A = static_cast<G4int>(massCode - 1000 << 48 G4int A = static_cast<G4int>(massCode-1000*Z);
51 << 49
52 if (massCode == 0) { << 50 if(massCode==0)
53 result->SetDefinition(G4Gamma::Gamma()); << 51 {
54 } << 52 result->SetDefinition(G4Gamma::Gamma());
55 else if (A == 0) { << 53 }
56 result->SetDefinition(G4Electron::Electron << 54 else if(A==0)
57 if (Z == 1) result->SetDefinition(G4Positr << 55 {
58 } << 56 result->SetDefinition(G4Electron::Electron());
59 else if (A == 1) { << 57 if(Z==1) result->SetDefinition(G4Positron::Positron());
60 result->SetDefinition(G4Neutron::Neutron() << 58 }
61 if (Z == 1) result->SetDefinition(G4Proton << 59 else if(A==1)
62 } << 60 {
63 else if (A == 2) { << 61 result->SetDefinition(G4Neutron::Neutron());
64 result->SetDefinition(G4Deuteron::Deuteron << 62 if(Z==1) result->SetDefinition(G4Proton::Proton());
65 } << 63 }
66 else if (A == 3) { << 64 else if(A==2)
67 result->SetDefinition(G4Triton::Triton()); << 65 {
68 if (Z == 2) result->SetDefinition(G4He3::H << 66 result->SetDefinition(G4Deuteron::Deuteron());
69 } << 67 }
70 else if (A == 4) { << 68 else if(A==3)
71 result->SetDefinition(G4Alpha::Alpha()); << 69 {
72 if (Z != 2) throw G4HadronicException(__FI << 70 result->SetDefinition(G4Triton::Triton());
73 } << 71 if(Z==2) result->SetDefinition(G4He3::He3());
74 else { << 72 }
75 throw G4HadronicException(__FILE__, __LINE << 73 else if(A==4)
76 "G4ParticleHPNBo << 74 {
77 } << 75 result->SetDefinition(G4Alpha::Alpha());
78 << 76 if(Z!=2) throw G4HadronicException(__FILE__, __LINE__, "Unknown ion case 1");
79 // Get the energy from phase-space distribut << 77 }
80 // in CMS << 78 else
81 // P = Cn*std::sqrt(E')*(Emax-E')**(3*n/2-4) << 79 {
82 G4double maxE = GetEmax(anEnergy, result->Ge << 80 throw G4HadronicException(__FILE__, __LINE__, "G4ParticleHPNBodyPhaseSpace: Unknown ion case 2");
83 if (maxE <= 0) { << 81 }
84 maxE = 1. * CLHEP::eV; << 82
85 } << 83 // Get the energy from phase-space distribution
86 G4double energy = 0.; << 84 // in CMS
87 G4double max(0); << 85 // P = Cn*std::sqrt(E')*(Emax-E')**(3*n/2-4)
88 if (theTotalCount <= 3) { << 86 G4double maxE = GetEmax(anEnergy, result->GetMass());
89 max = maxE / 2.; << 87 G4double energy;
90 } << 88 G4double max(0);
91 else if (theTotalCount == 4) { << 89 if(theTotalCount<=3)
92 max = maxE / 5.; << 90 {
93 } << 91 max = maxE/2.;
94 else if (theTotalCount == 5) { << 92 }
95 max = maxE / 8.; << 93 else if(theTotalCount==4)
96 } << 94 {
97 else { << 95 max = maxE/5.;
98 throw G4HadronicException( << 96 }
99 __FILE__, __LINE__, << 97 else if(theTotalCount==5)
100 "NeutronHP Phase-space distribution cann << 98 {
101 } << 99 max = maxE/8.;
102 G4double testit; << 100 }
103 G4double rand0 = Prob(max, maxE, theTotalCou << 101 else
104 G4double rand; << 102 {
105 << 103 throw G4HadronicException(__FILE__, __LINE__, "NeutronHP Phase-space distribution cannot cope with this number of particles");
106 G4int icounter = 0; << 104 }
107 G4int icounter_max = 1024; << 105 G4double testit;
108 do { << 106 G4double rand0 = Prob(max, maxE, theTotalCount);
109 icounter++; << 107 G4double rand;
110 if (icounter > icounter_max) { << 108
111 G4cout << "Loop-counter exceeded the thr << 109 do
112 << __FILE__ << "." << G4endl; << 110 {
113 break; << 111 rand = rand0*G4UniformRand();
114 } << 112 energy = maxE*G4UniformRand();
115 rand = rand0 * G4UniformRand(); << 113 testit = Prob(energy, maxE, theTotalCount);
116 energy = maxE * G4UniformRand(); << 114 }
117 testit = Prob(energy, maxE, theTotalCount) << 115 while(rand > testit);
118 } while (rand > testit); // Loop checking, << 116 result->SetKineticEnergy(energy);
119 result->SetKineticEnergy(energy); << 117
120 << 118 // now do random direction
121 // now do random direction << 119 G4double cosTh = 2.*G4UniformRand()-1.;
122 G4double cosTh = 2. * G4UniformRand() - 1.; << 120 G4double phi = twopi*G4UniformRand();
123 G4double phi = twopi * G4UniformRand(); << 121 G4double theta = std::acos(cosTh);
124 G4double theta = std::acos(cosTh); << 122 G4double sinth = std::sin(theta);
125 G4double sinth = std::sin(theta); << 123 G4double mtot = result->GetTotalMomentum();
126 G4double mtot = result->GetTotalMomentum(); << 124 G4ThreeVector tempVector(mtot*sinth*std::cos(phi), mtot*sinth*std::sin(phi), mtot*std::cos(theta) );
127 G4ThreeVector tempVector(mtot * sinth * std: << 125 result->SetMomentum(tempVector);
128 mtot * std::cos(the << 126 G4ReactionProduct aCMS = *GetTarget()+*GetProjectileRP();
129 result->SetMomentum(tempVector); << 127 result->Lorentz(*result, -1.*aCMS);
130 G4ReactionProduct aCMS = *GetTarget() + *Get << 128 return result;
131 result->Lorentz(*result, -1. * aCMS); <<
132 return result; <<
133 } 129 }
134 130