1 | // |
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2 | // ******************************************************************** |
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3 | // * License and Disclaimer * |
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4 | // * * |
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5 | // * The Geant4 software is copyright of the Copyright Holders of * |
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6 | // * the Geant4 Collaboration. It is provided under the terms and * |
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7 | // * conditions of the Geant4 Software License, included in the file * |
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8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
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9 | // * include a list of copyright holders. * |
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10 | // * * |
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11 | // * Neither the authors of this software system, nor their employing * |
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12 | // * institutes,nor the agencies providing financial support for this * |
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13 | // * work make any representation or warranty, express or implied, * |
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14 | // * regarding this software system or assume any liability for its * |
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15 | // * use. Please see the license in the file LICENSE and URL above * |
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16 | // * for the full disclaimer and the limitation of liability. * |
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17 | // * * |
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18 | // * This code implementation is the result of the scientific and * |
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19 | // * technical work of the GEANT4 collaboration. * |
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20 | // * By using, copying, modifying or distributing the software (or * |
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21 | // * any work based on the software) you agree to acknowledge its * |
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22 | // * use in resulting scientific publications, and indicate your * |
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23 | // * acceptance of all terms of the Geant4 Software license. * |
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24 | // ******************************************************************** |
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25 | // |
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26 | // $Id: MedLinacPrimaryGeneratorAction.cc,v 1.8 2006/06/29 16:04:43 gunter Exp $ |
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27 | // |
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28 | // |
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29 | // Code developed by: M. Piergentili |
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30 | // |
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31 | #include "MedLinacPrimaryGeneratorAction.hh" |
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32 | #include "MedLinacPrimaryGeneratorMessenger.hh" |
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33 | |
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34 | #ifdef G4ANALYSIS_USE |
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35 | #include "MedLinacAnalysisManager.hh" |
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36 | #endif |
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37 | #include "MedLinacDetectorConstruction.hh" |
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38 | #include "G4Event.hh" |
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39 | #include "G4ParticleGun.hh" |
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40 | #include "G4ParticleTable.hh" |
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41 | #include "G4ParticleDefinition.hh" |
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42 | #include "globals.hh" |
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43 | #include "Randomize.hh" |
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44 | #include "G4RunManager.hh" |
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45 | #include "G4UImanager.hh" |
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46 | #include "G4IonTable.hh" |
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47 | |
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48 | MedLinacPrimaryGeneratorAction::MedLinacPrimaryGeneratorAction() |
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49 | :pEnergy(99.0*MeV),sigma(12.7*MeV) |
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50 | { |
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51 | G4int n_particle = 1; |
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52 | particleGun = new G4ParticleGun(n_particle); |
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53 | |
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54 | //create a messenger for this class |
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55 | gunMessenger = new MedLinacPrimaryGeneratorMessenger(this); |
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56 | |
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57 | // default particle kinematic |
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58 | |
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59 | G4ParticleTable* particleTable = G4ParticleTable::GetParticleTable(); |
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60 | G4String particleName; |
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61 | |
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62 | particleGun->SetParticleDefinition(particleTable->FindParticle(particleName="e-")); |
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63 | particleGun->SetParticleEnergy(pEnergy); |
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64 | |
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65 | //********************************************************************** |
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66 | //********************************************************************** |
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67 | particleGun->SetParticlePosition(G4ThreeVector(0.0*cm, 0.0*cm, 123.0*cm)); |
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68 | //particleGun->SetParticlePosition(G4ThreeVector(0.0*cm, 0.0*cm, 160.09855*cm)); |
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69 | //********************************************************************** |
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70 | //********************************************************************** |
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71 | |
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72 | } |
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73 | |
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74 | MedLinacPrimaryGeneratorAction::~MedLinacPrimaryGeneratorAction() |
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75 | { |
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76 | delete particleGun; |
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77 | delete gunMessenger; |
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78 | } |
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79 | |
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80 | void MedLinacPrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent) |
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81 | { |
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82 | G4double energy; |
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83 | |
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84 | //#ifdef G4ANALYSIS_USE |
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85 | //MedLinacAnalysisManager* analysis = MedLinacAnalysisManager::getInstance(); |
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86 | //#endif |
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87 | |
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88 | //BeamLine |
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89 | //G4ThreeVector v(0.0,0.0,-1.0); |
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90 | //particleGun->SetParticleMomentumDirection(v); |
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91 | |
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92 | |
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93 | //uniform distribution in solid angle (-1<cosTheta<-0.9999; 0<phi<2pi) |
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94 | // |
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95 | |
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96 | //G4double cosTheta = -0.0001*G4UniformRand()-0.9999; |
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97 | G4double cosTheta = CLHEP::RandGauss::shoot(-1.,0.00003); |
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98 | G4double phi = twopi * G4UniformRand(); |
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99 | |
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100 | G4double sinTheta = std::sqrt(1. - cosTheta*cosTheta); |
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101 | G4double ux = sinTheta*std::cos(phi); |
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102 | G4double uy = sinTheta*std::sin(phi); |
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103 | G4double uz = cosTheta; |
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104 | |
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105 | particleGun->SetParticleMomentumDirection(G4ThreeVector(ux,uy,uz)); |
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106 | |
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107 | energy=pEnergy; |
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108 | energy = CLHEP::RandGauss::shoot(pEnergy,sigma); |
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109 | particleGun->SetParticleEnergy(energy); |
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110 | |
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111 | //G4cout <<"the energy of the primaries is " << energy <<" "<<"MeV"<< G4endl; |
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112 | //G4cout <<"the sigma of the energy is " << sigma <<" "<<"MeV"<< G4endl; |
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113 | |
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114 | particleGun->GeneratePrimaryVertex(anEvent); |
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115 | } |
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116 | |
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117 | |
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118 | |
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