[1316] | 1 | // |
---|
| 2 | // ******************************************************************** |
---|
| 3 | // * License and Disclaimer * |
---|
| 4 | // * * |
---|
| 5 | // * The Geant4 software is copyright of the Copyright Holders of * |
---|
| 6 | // * the Geant4 Collaboration. It is provided under the terms and * |
---|
| 7 | // * conditions of the Geant4 Software License, included in the file * |
---|
| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
---|
| 9 | // * include a list of copyright holders. * |
---|
| 10 | // * * |
---|
| 11 | // * Neither the authors of this software system, nor their employing * |
---|
| 12 | // * institutes,nor the agencies providing financial support for this * |
---|
| 13 | // * work make any representation or warranty, express or implied, * |
---|
| 14 | // * regarding this software system or assume any liability for its * |
---|
| 15 | // * use. Please see the license in the file LICENSE and URL above * |
---|
| 16 | // * for the full disclaimer and the limitation of liability. * |
---|
| 17 | // * * |
---|
| 18 | // * This code implementation is the result of the scientific and * |
---|
| 19 | // * technical work of the GEANT4 collaboration. * |
---|
| 20 | // * By using, copying, modifying or distributing the software (or * |
---|
| 21 | // * any work based on the software) you agree to acknowledge its * |
---|
| 22 | // * use in resulting scientific publications, and indicate your * |
---|
| 23 | // * acceptance of all terms of the Geant4 Software license. * |
---|
| 24 | // ******************************************************************** |
---|
| 25 | // |
---|
| 26 | // |
---|
| 27 | // GridParticleGun.cc |
---|
| 28 | // |
---|
| 29 | // Implementation of grid particle gun |
---|
| 30 | // |
---|
| 31 | |
---|
| 32 | #include "GridParticleGun.hh" |
---|
| 33 | #include "GridParticleGunMessenger.hh" |
---|
| 34 | |
---|
| 35 | #include "G4PrimaryParticle.hh" |
---|
| 36 | #include "G4ParticleTypes.hh" |
---|
| 37 | #include "G4Event.hh" |
---|
| 38 | |
---|
| 39 | // |
---|
| 40 | // Constructor (no arguments) |
---|
| 41 | // |
---|
| 42 | GridParticleGun::GridParticleGun() |
---|
| 43 | { |
---|
| 44 | SetDefaults(); |
---|
| 45 | } |
---|
| 46 | |
---|
| 47 | // |
---|
| 48 | // Constructor |
---|
| 49 | // |
---|
| 50 | GridParticleGun::GridParticleGun( G4ThreeVector theDirection, |
---|
| 51 | G4ThreeVector theOrigin, |
---|
| 52 | G4ThreeVector theGrid1, |
---|
| 53 | G4ThreeVector theGrid2, |
---|
| 54 | G4int theN1, G4int theN2 ) |
---|
| 55 | { |
---|
| 56 | SetDefaults(); |
---|
| 57 | |
---|
| 58 | direction = theDirection; |
---|
| 59 | origin = theOrigin; |
---|
| 60 | grid1 = theGrid1; |
---|
| 61 | grid2 = theGrid2; |
---|
| 62 | n1 = theN1; |
---|
| 63 | n2 = theN2; |
---|
| 64 | |
---|
| 65 | if (n1*n2 == 0) |
---|
| 66 | G4Exception( "GridParticleGun created with n1 or n2 zero" ); |
---|
| 67 | } |
---|
| 68 | |
---|
| 69 | |
---|
| 70 | // |
---|
| 71 | // Destructor |
---|
| 72 | // |
---|
| 73 | GridParticleGun::~GridParticleGun() { |
---|
| 74 | delete messenger; |
---|
| 75 | } |
---|
| 76 | |
---|
| 77 | |
---|
| 78 | // |
---|
| 79 | // SetDefaults |
---|
| 80 | // |
---|
| 81 | // Set defaults and create associated messenger |
---|
| 82 | // |
---|
| 83 | void GridParticleGun::SetDefaults() |
---|
| 84 | { |
---|
| 85 | direction = G4ThreeVector(0,0,1); |
---|
| 86 | origin = G4ThreeVector(-2*m,-2*m,-2*m); |
---|
| 87 | grid1 = G4ThreeVector(4*m,0,0); |
---|
| 88 | grid2 = G4ThreeVector(0,4*m,0); |
---|
| 89 | n1 = 10; |
---|
| 90 | n2 = 10; |
---|
| 91 | |
---|
| 92 | |
---|
| 93 | particleType = G4Geantino::GeantinoDefinition(); |
---|
| 94 | |
---|
| 95 | messenger = new GridParticleGunMessenger( this ); |
---|
| 96 | } |
---|
| 97 | |
---|
| 98 | |
---|
| 99 | // |
---|
| 100 | // GeneratePrimaryVertex |
---|
| 101 | // |
---|
| 102 | // Make the event. |
---|
| 103 | // |
---|
| 104 | // Note the strange notation of G4Event: we are allowed to have as many |
---|
| 105 | // "primary" vertices as we wish. |
---|
| 106 | // |
---|
| 107 | void GridParticleGun::GeneratePrimaryVertex( G4Event *evt ) |
---|
| 108 | { |
---|
| 109 | G4ThreeVector delta1 = grid1*(1.0/((G4double) n1)), |
---|
| 110 | delta2 = grid2*(1.0/((G4double) n2)); |
---|
| 111 | |
---|
| 112 | G4int i = 0; |
---|
| 113 | G4ThreeVector iStart = origin; |
---|
| 114 | do { |
---|
| 115 | G4int j = 0; |
---|
| 116 | G4ThreeVector jStart = iStart; |
---|
| 117 | do { |
---|
| 118 | |
---|
| 119 | // |
---|
| 120 | // New particle: make it's vertex |
---|
| 121 | // |
---|
| 122 | G4PrimaryVertex *vertex = new G4PrimaryVertex( jStart, 0.0 ); |
---|
| 123 | |
---|
| 124 | // |
---|
| 125 | // ...then make it's self |
---|
| 126 | // |
---|
| 127 | G4PrimaryParticle *particle = new G4PrimaryParticle( particleType, direction.x(), direction.y(), direction.z() ); |
---|
| 128 | |
---|
| 129 | // |
---|
| 130 | // ...add it to the vertex, and add the vertex to the event |
---|
| 131 | // |
---|
| 132 | vertex->SetPrimary( particle ); |
---|
| 133 | evt->AddPrimaryVertex( vertex ); |
---|
| 134 | |
---|
| 135 | } while( jStart += delta2, j++ < n2 ); |
---|
| 136 | } while( iStart += delta1, i++ < n1 ); |
---|
| 137 | } |
---|
| 138 | |
---|