| Geant4 Cross Reference |
1 // 1
2 // *******************************************
3 // * License and Disclaimer
4 // *
5 // * The Geant4 software is copyright of th
6 // * the Geant4 Collaboration. It is provided
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12 // * institutes,nor the agencies providing fin
13 // * work make any representation or warran
14 // * regarding this software system or assum
15 // * use. Please see the license in the file
16 // * for the full disclaimer and the limitatio
17 // *
18 // * This code implementation is the result
19 // * technical work of the GEANT4 collaboratio
20 // * By using, copying, modifying or distri
21 // * any work based on the software) you ag
22 // * use in resulting scientific publicati
23 // * acceptance of all terms of the Geant4 Sof
24 // *******************************************
25
26 #include "PrimaryGeneratorAction.hh"
27
28 #include "ChemistryWorld.hh"
29 #include "DetectorConstruction.hh"
30
31 #include "G4Electron.hh"
32 #include "G4Event.hh"
33 #include "G4ParticleDefinition.hh"
34 #include "G4ParticleGun.hh"
35 #include "G4ParticleTable.hh"
36 #include "G4SystemOfUnits.hh"
37
38 //....oooOO0OOooo........oooOO0OOooo........oo
39
40 PrimaryGeneratorAction::PrimaryGeneratorAction
41 : G4VUserPrimaryGeneratorAction(), fpDetecto
42 {
43 fpMessenger = std::make_unique<PrimaryGenera
44 fParticleGun = std::make_unique<G4SinglePart
45 G4ParticleDefinition* particle = G4Electron:
46 fParticleGun->SetParticleDefinition(particle
47 fParticleGun->SetNumberOfParticles(1000000);
48
49 auto pPosDist = fParticleGun->GetPosDist();
50 pPosDist->SetPosDisType("Plane");
51 pPosDist->SetPosDisShape("Square");
52 auto faceSiez = fpDetector->GetChemistryWorl
53 pPosDist->SetCentreCoords(G4ThreeVector(0, 0
54 pPosDist->SetHalfX(faceSiez);
55 pPosDist->SetHalfY(faceSiez);
56
57 auto pAngleDist = fParticleGun->GetAngDist()
58 pAngleDist->SetParticleMomentumDirection(G4T
59
60 auto pEnergyDis = fParticleGun->GetEneDist()
61 pEnergyDis->SetMonoEnergy(0.9999 * MeV);
62 }
63
64 //....oooOO0OOooo........oooOO0OOooo........oo
65
66 void PrimaryGeneratorAction::GeneratePrimaries
67 {
68 G4ParticleDefinition* particle = fParticleGu
69 auto NumberOfParticlesToBeGenerated = fParti
70 auto pPosDist = fParticleGun->GetPosDist();
71 auto pAngleDist = fParticleGun->GetAngDist()
72 auto pEnDist = fParticleGun->GetEneDist();
73 auto rnd = fParticleGun->GetBiasRndm();
74 auto charge = particle->GetPDGCharge();
75
76 for (G4int i = 0; i < NumberOfParticlesToBeG
77 auto angle = pAngleDist->GenerateOne();
78 auto energy = pEnDist->GenerateOne(particl
79 auto pos = pPosDist->GenerateOne();
80 auto mass = particle->GetPDGMass();
81 auto p = new G4PrimaryParticle(particle);
82 auto vertex = new G4PrimaryVertex(pos, 0);
83 p->SetKineticEnergy(energy);
84 p->SetMass(mass);
85 p->SetMomentumDirection(angle);
86 p->SetCharge(charge);
87 p->SetPolarization(0., 0., 0.);
88
89 G4double weight = pEnDist->GetWeight() * r
90 p->SetWeight(weight);
91 vertex->SetPrimary(p);
92 anEvent->AddPrimaryVertex(vertex);
93 }
94 }
95
96 //....oooOO0OOooo........oooOO0OOooo........oo
97