| Geant4 Cross Reference |
1 // 1 //
2 // ******************************************* 2 // ********************************************************************
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4 // * 4 // * *
5 // * The Geant4 software is copyright of th 5 // * The Geant4 software is copyright of the Copyright Holders of *
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17 // * 17 // * *
18 // * This code implementation is the result 18 // * This code implementation is the result of the scientific and *
19 // * technical work of the GEANT4 collaboratio 19 // * technical work of the GEANT4 collaboration. *
20 // * By using, copying, modifying or distri 20 // * By using, copying, modifying or distributing the software (or *
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24 // ******************************************* 24 // ********************************************************************
25 // 25 //
26 // This example is provided by the Geant4-DNA 26 // This example is provided by the Geant4-DNA collaboration
27 // Any report or published results obtained us 27 // Any report or published results obtained using the Geant4-DNA software
28 // shall cite the following Geant4-DNA collabo 28 // shall cite the following Geant4-DNA collaboration publication:
29 // Med. Phys. 37 (2010) 4692-4708 29 // Med. Phys. 37 (2010) 4692-4708
30 // The Geant4-DNA web site is available at htt 30 // The Geant4-DNA web site is available at http://geant4-dna.org
31 // 31 //
32 // If you use this example, please cite the fo 32 // If you use this example, please cite the following publication:
33 // Rad. Prot. Dos. 133 (2009) 2-11 33 // Rad. Prot. Dos. 133 (2009) 2-11
34 // << 34
35 #include "PrimaryGeneratorAction.hh" <<
36 #include "G4SystemOfUnits.hh" 35 #include "G4SystemOfUnits.hh"
37 #include "G4Event.hh" 36 #include "G4Event.hh"
38 #include "G4ParticleTable.hh" 37 #include "G4ParticleTable.hh"
39 #include "Randomize.hh" 38 #include "Randomize.hh"
40 39
>> 40 #include "PrimaryGeneratorAction.hh"
>> 41
>> 42 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
>> 43
41 PrimaryGeneratorAction::PrimaryGeneratorAction 44 PrimaryGeneratorAction::PrimaryGeneratorAction()
42 { 45 {
43 fParticleGun = new G4ParticleGun(1); 46 fParticleGun = new G4ParticleGun(1);
44 } 47 }
45 48
>> 49 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
>> 50
46 PrimaryGeneratorAction::~PrimaryGeneratorActio 51 PrimaryGeneratorAction::~PrimaryGeneratorAction()
47 { 52 {
48 delete fParticleGun; 53 delete fParticleGun;
49 } 54 }
50 55
>> 56 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
>> 57
51 void PrimaryGeneratorAction::GeneratePrimaries 58 void PrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
52 { 59 {
53 G4int numEvent; 60 G4int numEvent;
54 numEvent=anEvent->GetEventID()+1; 61 numEvent=anEvent->GetEventID()+1;
55 G4double x0,y0,z0,theta,phi,xMom0,yMom0,zMom 62 G4double x0,y0,z0,theta,phi,xMom0,yMom0,zMom0,e0;
56 63
57 // INITIAL BEAM POSITION 64 // INITIAL BEAM POSITION
58 65
59 z0=-10000*mm; 66 z0=-10000*mm;
60 x0=10*mm; 67 x0=10*mm;
61 y0=10*mm; 68 y0=10*mm;
62 69
63 G4double sizeMax = 0.5*micrometer; // INITIA 70 G4double sizeMax = 0.5*micrometer; // INITIAL BEAM POSITION UNIFORMLY SPREAD ON A DISK
64 while (! (std::sqrt(x0*x0+y0*y0)<= sizeMax) 71 while (! (std::sqrt(x0*x0+y0*y0)<= sizeMax) )
65 { 72 {
66 x0 = CLHEP::RandFlat::shoot(-sizeMax,sizeM 73 x0 = CLHEP::RandFlat::shoot(-sizeMax,sizeMax);
67 y0 = CLHEP::RandFlat::shoot(-sizeMax,sizeM 74 y0 = CLHEP::RandFlat::shoot(-sizeMax,sizeMax);
68 } 75 }
69 76
70 // INITIAL BEAM ENERGY 77 // INITIAL BEAM ENERGY
71 78
72 e0= G4RandGauss::shoot(3*MeV,5.0955e-5*MeV); 79 e0= G4RandGauss::shoot(3*MeV,5.0955e-5*MeV); // AIFIRA ENERGY RESOLUTION
73 80
74 // INITIAL BEAM DIVERGENCE 81 // INITIAL BEAM DIVERGENCE
75 82
76 do { 83 do {
77 theta=std::acos(1-G4UniformRand()*(1.0- 84 theta=std::acos(1-G4UniformRand()*(1.0-std::cos(1.1e-6)))*rad;
78 } 85 }
79 while(theta>1.1e-6*rad); 86 while(theta>1.1e-6*rad);
80 87
81 phi=CLHEP::twopi*G4UniformRand()*rad; 88 phi=CLHEP::twopi*G4UniformRand()*rad;
82 89
83 xMom0=std::sin(theta)*std::cos(phi); 90 xMom0=std::sin(theta)*std::cos(phi);
84 yMom0=std::sin(theta)*std::sin(phi); 91 yMom0=std::sin(theta)*std::sin(phi);
85 zMom0=std::cos(theta); 92 zMom0=std::cos(theta);
86 93
87 // VERBOSE 94 // VERBOSE
88 95
89 G4cout 96 G4cout
90 << "-> Event # " << numEvent 97 << "-> Event # " << numEvent
91 << " generated " 98 << " generated "
92 << G4endl; 99 << G4endl;
93 100
94 /* 101 /*
95 G4cout 102 G4cout
96 << "-> Event # " << numEvent 103 << "-> Event # " << numEvent
97 << " : THETA from Z axis (mrad) = " << theta 104 << " : THETA from Z axis (mrad) = " << theta*1000
98 << " -- PHI (deg) = " << phi*180/CLHEP::pi 105 << " -- PHI (deg) = " << phi*180/CLHEP::pi
99 << " -- x0 (um) = " << x0/micrometer 106 << " -- x0 (um) = " << x0/micrometer
100 << " -- y0 (um) = " << y0/micrometer 107 << " -- y0 (um) = " << y0/micrometer
101 << " -- z0 (m) = " << z0/m 108 << " -- z0 (m) = " << z0/m
102 << " -- e0 (MeV) = " << e0/MeV 109 << " -- e0 (MeV) = " << e0/MeV
103 << G4endl; 110 << G4endl;
104 */ 111 */
105 112
106 fParticleGun->SetParticleEnergy(e0); 113 fParticleGun->SetParticleEnergy(e0);
107 114
108 fParticleGun->SetParticleMomentumDirection(G 115 fParticleGun->SetParticleMomentumDirection(G4ThreeVector(xMom0,yMom0,zMom0));
109 116
110 fParticleGun->SetParticlePosition(G4ThreeVec 117 fParticleGun->SetParticlePosition(G4ThreeVector(x0,y0,z0));
111 118
112 G4ParticleDefinition* particle= 119 G4ParticleDefinition* particle=
113 G4ParticleTable::GetParticleTable()->FindP 120 G4ParticleTable::GetParticleTable()->FindParticle("alpha");
114 121
115 fParticleGun->SetParticleDefinition(particle 122 fParticleGun->SetParticleDefinition(particle);
116 123
117 fParticleGun->GeneratePrimaryVertex(anEvent) 124 fParticleGun->GeneratePrimaryVertex(anEvent);
118 125
119 } 126 }
>> 127
>> 128 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
>> 129
>> 130
120 131