[807] | 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 | // |
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| 27 | // |
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| 28 | |
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| 29 | #include "G4ios.hh" |
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| 30 | #include "G4Event.hh" |
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| 31 | #include "G4ParticleGun.hh" |
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| 32 | #include "G4ParticleTable.hh" |
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| 33 | #include "G4ParticleDefinition.hh" |
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| 34 | |
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| 35 | #include "G4GeometryManager.hh" |
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| 36 | |
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| 37 | #include "Randomize.hh" |
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| 38 | |
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| 39 | #include "F04PrimaryGeneratorAction.hh" |
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| 40 | |
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| 41 | #include "F04DetectorConstruction.hh" |
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| 42 | #include "F04PrimaryGeneratorMessenger.hh" |
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| 43 | |
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| 44 | G4bool F04PrimaryGeneratorAction::first = false; |
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| 45 | |
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| 46 | F04PrimaryGeneratorAction::F04PrimaryGeneratorAction(F04DetectorConstruction* DC) |
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| 47 | : Detector(DC), rndmFlag("off"), |
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| 48 | xvertex(0.), yvertex(0.), zvertex(0.), |
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| 49 | vertexdefined(false) |
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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 | gunMessenger = new F04PrimaryGeneratorMessenger(this); |
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| 55 | |
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| 56 | G4String particleName; |
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| 57 | G4ParticleTable* particleTable = G4ParticleTable::GetParticleTable(); |
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| 58 | |
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| 59 | particleGun->SetParticleDefinition(particleTable-> |
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| 60 | FindParticle(particleName="proton")); |
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| 61 | particleGun->SetParticleEnergy(500.*MeV); |
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| 62 | particleGun->SetParticleMomentumDirection(G4ThreeVector(0.,0.,1.)); |
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| 63 | |
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| 64 | zvertex = -0.5*(Detector->GetTargetThickness()); |
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| 65 | particleGun->SetParticlePosition(G4ThreeVector(xvertex,yvertex,zvertex)); |
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| 66 | |
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| 67 | } |
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| 68 | |
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| 69 | F04PrimaryGeneratorAction::~F04PrimaryGeneratorAction() |
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| 70 | { |
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| 71 | delete particleGun; |
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| 72 | delete gunMessenger; |
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| 73 | } |
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| 74 | |
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| 75 | void F04PrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent) |
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| 76 | { |
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| 77 | |
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| 78 | if (!first) { |
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| 79 | |
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| 80 | first = true; |
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| 81 | |
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| 82 | G4Navigator* theNavigator = |
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| 83 | G4TransportationManager::GetTransportationManager()-> |
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| 84 | GetNavigatorForTracking(); |
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| 85 | G4Navigator* aNavigator = new G4Navigator(); |
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| 86 | if ( theNavigator->GetWorldVolume() ) |
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| 87 | aNavigator->SetWorldVolume(theNavigator->GetWorldVolume()); |
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| 88 | |
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| 89 | G4GeometryManager* geomManager = G4GeometryManager::GetInstance(); |
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| 90 | |
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| 91 | if (!geomManager->IsGeometryClosed()) { |
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| 92 | geomManager->OpenGeometry(); |
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| 93 | geomManager->CloseGeometry(true); |
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| 94 | } |
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| 95 | |
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| 96 | G4ThreeVector center(0.,0.,0.); |
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| 97 | aNavigator->LocateGlobalPointAndSetup(center,0,false); |
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| 98 | |
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| 99 | G4TouchableHistoryHandle fTouchable = aNavigator-> |
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| 100 | CreateTouchableHistoryHandle(); |
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| 101 | |
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| 102 | // set global2local transform |
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| 103 | global2local = fTouchable->GetHistory()->GetTopTransform(); |
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| 104 | |
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| 105 | G4ThreeVector direction(0.0,0.0,1.0); |
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| 106 | direction = global2local.Inverse().TransformAxis(direction); |
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| 107 | |
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| 108 | particleGun->SetParticleMomentumDirection(direction); |
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| 109 | } |
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| 110 | |
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| 111 | G4double x0,y0,z0 ; |
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| 112 | |
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| 113 | if(vertexdefined) |
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| 114 | { |
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| 115 | x0 = xvertex ; |
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| 116 | y0 = yvertex ; |
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| 117 | z0 = zvertex ; |
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| 118 | } |
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| 119 | else |
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| 120 | { |
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| 121 | x0 = 0. ; |
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| 122 | y0 = 0. ; |
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| 123 | z0 = -0.5*(Detector->GetTargetThickness()); |
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| 124 | } |
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| 125 | |
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| 126 | G4double r0,phi0 ; |
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| 127 | |
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| 128 | if (rndmFlag == "on") |
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| 129 | { |
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| 130 | r0 = (Detector->GetTargetRadius())*std::sqrt(G4UniformRand()); |
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| 131 | phi0 = twopi*G4UniformRand(); |
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| 132 | x0 = r0*std::cos(phi0); |
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| 133 | y0 = r0*std::sin(phi0); |
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| 134 | } |
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| 135 | |
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| 136 | G4ThreeVector localPosition(x0,y0,z0); |
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| 137 | G4ThreeVector globalPosition = |
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| 138 | global2local.Inverse().TransformPoint(localPosition); |
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| 139 | |
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| 140 | particleGun->SetParticlePosition(globalPosition); |
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| 141 | particleGun->GeneratePrimaryVertex(anEvent); |
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| 142 | } |
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| 143 | |
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| 144 | void F04PrimaryGeneratorAction::Setxvertex(G4double x) |
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| 145 | { |
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| 146 | vertexdefined = true ; |
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| 147 | xvertex = x ; |
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| 148 | G4cout << " X coordinate of the primary vertex = " << xvertex/mm << |
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| 149 | " mm." << G4endl; |
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| 150 | } |
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| 151 | |
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| 152 | void F04PrimaryGeneratorAction::Setyvertex(G4double y) |
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| 153 | { |
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| 154 | vertexdefined = true ; |
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| 155 | yvertex = y ; |
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| 156 | G4cout << " Y coordinate of the primary vertex = " << yvertex/mm << |
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| 157 | " mm." << G4endl; |
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| 158 | } |
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| 159 | |
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| 160 | void F04PrimaryGeneratorAction::Setzvertex(G4double z) |
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| 161 | { |
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| 162 | vertexdefined = true ; |
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| 163 | zvertex = z ; |
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| 164 | G4cout << " Z coordinate of the primary vertex = " << zvertex/mm << |
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| 165 | " mm." << G4endl; |
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| 166 | } |
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