[816] | 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 | // $Id: G4RayShooter.cc,v 1.2 2006/06/29 18:10:00 gunter Exp $ |
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[1228] | 28 | // GEANT4 tag $Name: geant4-09-03 $ |
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[816] | 29 | // |
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| 30 | |
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| 31 | #include "G4RayShooter.hh" |
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| 32 | #include "G4PrimaryParticle.hh" |
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| 33 | #include "G4Event.hh" |
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| 34 | #include "G4ParticleTable.hh" |
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| 35 | #include "G4ParticleDefinition.hh" |
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| 36 | #include "globals.hh" |
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| 37 | |
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| 38 | |
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| 39 | G4RayShooter::G4RayShooter() |
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| 40 | { |
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| 41 | SetInitialValues(); |
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| 42 | } |
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| 43 | |
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| 44 | void G4RayShooter::SetInitialValues() |
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| 45 | { |
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| 46 | particle_definition = 0; |
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| 47 | G4ThreeVector zero; |
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| 48 | particle_momentum_direction = (G4ParticleMomentum)zero; |
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| 49 | particle_energy = 1.0*GeV; |
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| 50 | particle_position = zero; |
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| 51 | particle_time = 0.0; |
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| 52 | particle_polarization = zero; |
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| 53 | } |
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| 54 | |
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| 55 | G4RayShooter::~G4RayShooter() |
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| 56 | { |
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| 57 | } |
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| 58 | |
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| 59 | void G4RayShooter::Shoot(G4Event* evt,G4ThreeVector vtx,G4ThreeVector direc) |
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| 60 | { |
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| 61 | if(!particle_definition) |
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| 62 | { |
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| 63 | G4ParticleTable* particleTable = G4ParticleTable::GetParticleTable(); |
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| 64 | G4String particleName; |
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| 65 | particle_definition = particleTable->FindParticle(particleName="geantino"); |
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| 66 | if(!particle_definition) |
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| 67 | { |
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| 68 | G4String msg; |
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| 69 | msg = " G4RayTracer uses geantino to trace the ray, but your physics list does not\n"; |
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| 70 | msg += "define G4Geantino. Please add G4Geantino in your physics list."; |
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| 71 | G4Exception("G4RayShooter::Shoot","RayTracer001",FatalException,msg); |
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| 72 | } |
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| 73 | } |
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| 74 | |
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| 75 | // create a new vertex |
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| 76 | G4PrimaryVertex* vertex = new G4PrimaryVertex(vtx,particle_time); |
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| 77 | |
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| 78 | // create new primaries and set them to the vertex |
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| 79 | G4double mass = particle_definition->GetPDGMass(); |
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| 80 | G4double energy = particle_energy + mass; |
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| 81 | G4double pmom = std::sqrt(energy*energy-mass*mass); |
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| 82 | G4double px = pmom*direc.x(); |
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| 83 | G4double py = pmom*direc.y(); |
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| 84 | G4double pz = pmom*direc.z(); |
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| 85 | G4PrimaryParticle* particle = |
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| 86 | new G4PrimaryParticle(particle_definition,px,py,pz); |
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| 87 | particle->SetMass( mass ); |
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| 88 | particle->SetPolarization(particle_polarization.x(), |
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| 89 | particle_polarization.y(), |
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| 90 | particle_polarization.z()); |
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| 91 | vertex->SetPrimary( particle ); |
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| 92 | |
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| 93 | evt->AddPrimaryVertex( vertex ); |
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| 94 | } |
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| 95 | |
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| 96 | |
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