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1 // 1 //
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24 // ******************************************* 24 // ********************************************************************
25 // 25 //
26 // << 26 // Authors: S. Guatelli and M. G. Pia, INFN Genova, Italy
27 // Previous authors: G. Guerrieri and M. G. Pi <<
28 // Authors (since 2007): S. Guatelli, Universi <<
29 // <<
30 // 27 //
31 // << 28 // Based on code developed by the undergraduate student G. Guerrieri
32 // ********************************** << 29 // Note: this is a preliminary beta-version of the code; an improved
33 // * * << 30 // version will be distributed in the next Geant4 public release, compliant
34 // * G4HumanPhantomPhysicsList.cc << 31 // with the design in a forthcoming publication, and subject to a
35 // * * << 32 // design and code review.
36 // ********************************** << 33
37 // <<
38 // <<
39 #include "G4HumanPhantomPhysicsList.hh" 34 #include "G4HumanPhantomPhysicsList.hh"
40 35
41 #include "G4SystemOfUnits.hh" <<
42 #include "G4ParticleDefinition.hh" 36 #include "G4ParticleDefinition.hh"
43 #include "G4ProductionCutsTable.hh" 37 #include "G4ProductionCutsTable.hh"
44 #include "G4ProcessManager.hh" 38 #include "G4ProcessManager.hh"
45 #include "G4ParticleTypes.hh" 39 #include "G4ParticleTypes.hh"
46 #include "G4UnitsTable.hh" 40 #include "G4UnitsTable.hh"
47 #include "G4ios.hh" 41 #include "G4ios.hh"
48 #include "G4VModularPhysicsList.hh" <<
49 #include "G4EmStandardPhysics_option4.hh" <<
50 #include "G4DecayPhysics.hh" <<
51 42
52 G4HumanPhantomPhysicsList::G4HumanPhantomPhysi << 43 #include "G4MultipleScattering.hh"
>> 44 // gamma
>> 45 #include "G4LowEnergyRayleigh.hh"
>> 46 #include "G4LowEnergyPhotoElectric.hh"
>> 47 #include "G4LowEnergyCompton.hh"
>> 48 #include "G4LowEnergyGammaConversion.hh"
>> 49 // e-
>> 50 #include "G4LowEnergyIonisation.hh"
>> 51 #include "G4LowEnergyBremsstrahlung.hh"
>> 52 // e+
>> 53 #include "G4eIonisation.hh"
>> 54 #include "G4eBremsstrahlung.hh"
>> 55 #include "G4eplusAnnihilation.hh"
>> 56
>> 57 G4HumanPhantomPhysicsList::G4HumanPhantomPhysicsList(): G4VUserPhysicsList()
53 { 58 {
54 SetVerboseLevel(1); 59 SetVerboseLevel(1);
55 emPhysicsList = new G4EmStandardPhysics_opti <<
56 decPhysicsList = new G4DecayPhysics(); <<
57 // Alternatively you can substitute this physi <<
58 // with the LowEnergy Livermore or LowEnergy P <<
59 // emPhysicsList = new G4EmLivermorePhysics(); <<
60 // Low Energy based on Livermore Evaluated Dat <<
61 // <<
62 // Penelope physics <<
63 //emPhysicsList = new G4EmPenelopePhysics(); <<
64 } 60 }
65 61
66 G4HumanPhantomPhysicsList::~G4HumanPhantomPhys 62 G4HumanPhantomPhysicsList::~G4HumanPhantomPhysicsList()
67 { 63 {
68 delete decPhysicsList; <<
69 delete emPhysicsList; <<
70 } 64 }
71 65
72 void G4HumanPhantomPhysicsList::ConstructParti 66 void G4HumanPhantomPhysicsList::ConstructParticle()
73 { 67 {
74 decPhysicsList -> ConstructParticle(); << 68 // In this method, static member functions should be called
>> 69 // for all particles which you want to use.
>> 70 // This ensures that objects of these particle types will be
>> 71 // created in the program.
>> 72 G4Geantino::GeantinoDefinition();
>> 73
>> 74 ConstructBosons();
>> 75 ConstructLeptons();
>> 76 }
>> 77
>> 78 void G4HumanPhantomPhysicsList::ConstructBosons()
>> 79 {
>> 80 // photons
>> 81 G4Gamma::GammaDefinition();
>> 82 }
>> 83
>> 84 void G4HumanPhantomPhysicsList::ConstructLeptons()
>> 85 {
>> 86 // leptons
>> 87 G4Electron::ElectronDefinition();
>> 88 G4Positron::PositronDefinition();
75 } 89 }
76 90
77 void G4HumanPhantomPhysicsList::ConstructProce 91 void G4HumanPhantomPhysicsList::ConstructProcess()
78 { 92 {
79 AddTransportation(); 93 AddTransportation();
80 emPhysicsList -> ConstructProcess(); << 94 ConstructEM();
81 decPhysicsList -> ConstructProcess(); << 95 }
>> 96
>> 97 void G4HumanPhantomPhysicsList::ConstructEM()
>> 98 {
>> 99 theParticleIterator->reset();
>> 100
>> 101 while( (*theParticleIterator)() ){
>> 102
>> 103 G4ParticleDefinition* particle = theParticleIterator->value();
>> 104 G4ProcessManager* pmanager = particle->GetProcessManager();
>> 105 G4String particleName = particle->GetParticleName();
>> 106
>> 107 // Processes
>> 108
>> 109 if (particleName == "gamma") {
>> 110 // Photon
>> 111 pmanager->AddDiscreteProcess(new G4LowEnergyRayleigh);
>> 112 pmanager->AddDiscreteProcess(new G4LowEnergyPhotoElectric);
>> 113 pmanager->AddDiscreteProcess(new G4LowEnergyCompton);
>> 114 pmanager->AddDiscreteProcess(new G4LowEnergyGammaConversion);
>> 115
>> 116 } else if (particleName == "e-") {
>> 117 // Electron
>> 118 G4LowEnergyIonisation* loweIon = new G4LowEnergyIonisation("LowEnergyIoni");
>> 119
>> 120 G4LowEnergyBremsstrahlung* loweBrem = new G4LowEnergyBremsstrahlung("LowEnBrem");
>> 121 // Select the Bremsstrahlung angular distribution model (Tsai/2BN/2BS)
>> 122 loweBrem->SetAngularGenerator("tsai");
>> 123
>> 124 pmanager->AddProcess(new G4MultipleScattering, -1, 1,1);
>> 125 pmanager->AddProcess(loweIon, -1, 2,2);
>> 126 pmanager->AddProcess(loweBrem, -1,-1,3);
>> 127
>> 128 } else if (particleName == "e+") {
>> 129 // Positron
>> 130 pmanager->AddProcess(new G4MultipleScattering, -1, 1,1);
>> 131 pmanager->AddProcess(new G4eIonisation, -1, 2,2);
>> 132 pmanager->AddProcess(new G4eBremsstrahlung, -1,-1,3);
>> 133 pmanager->AddProcess(new G4eplusAnnihilation, 0,-1,4);
>> 134
>> 135 }
>> 136 }
82 } 137 }
83 138
84 void G4HumanPhantomPhysicsList::SetCuts() 139 void G4HumanPhantomPhysicsList::SetCuts()
85 { 140 {
86 // The production threshold is fixed to 0.1 141 // The production threshold is fixed to 0.1 mm for all the particles
87 // Secondary particles with a range bigger t 142 // Secondary particles with a range bigger than 0.1 mm
88 // are generated; otherwise their energy is 143 // are generated; otherwise their energy is considered deposited locally
89 144
90 defaultCutValue = 1. * mm; << 145 defaultCutValue = 0.1 * mm;
91 146
92 const G4double cutForGamma = defaultCutValue 147 const G4double cutForGamma = defaultCutValue;
93 const G4double cutForElectron = defaultCutVa 148 const G4double cutForElectron = defaultCutValue;
94 const G4double cutForPositron = defaultCutVa 149 const G4double cutForPositron = defaultCutValue;
95 150
96 SetCutValue(cutForGamma, "gamma"); 151 SetCutValue(cutForGamma, "gamma");
97 SetCutValue(cutForElectron, "e-"); 152 SetCutValue(cutForElectron, "e-");
98 SetCutValue(cutForPositron, "e+"); 153 SetCutValue(cutForPositron, "e+");
99 154
100 // Set the secondary production cut lower th 155 // Set the secondary production cut lower than 990. eV
101 // Very important for high precision of lowe 156 // Very important for high precision of lowenergy processes at low energies
102 157
103 G4double lowLimit = 250. * eV; 158 G4double lowLimit = 250. * eV;
104 G4double highLimit = 100. * GeV; 159 G4double highLimit = 100. * GeV;
105 G4ProductionCutsTable::GetProductionCutsTabl 160 G4ProductionCutsTable::GetProductionCutsTable()->SetEnergyRange(lowLimit, highLimit);
106 161
107 if (verboseLevel>0) DumpCutValuesTable(); 162 if (verboseLevel>0) DumpCutValuesTable();
108 } 163 }
109 164