| 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 | // GEANT 4 - Brachytherapy example
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| 29 | // --------------------------------------------------------------
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| 30 | //
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| 31 | // Code developed by: S.Guatelli
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| 32 | //
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| 33 | // ********************************************
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| 34 | // * *
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| 35 | // * BrachyPrimaryGeneratorActionIr.cc *
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| 36 | // * *
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| 37 | // ********************************************
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| 38 | //
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| 39 | // $Id: BrachyPrimaryGeneratorActionIr.cc,v 1.4 2006/06/29 17:33:36 gunter Exp $
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| 40 | // GEANT4 tag $Name: $
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| 41 | //
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| 42 | #include "BrachyPrimaryGeneratorActionIr.hh"
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| 43 |
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| 44 | #ifdef G4ANALYSIS_USE
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| 45 | #include "BrachyAnalysisManager.hh"
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| 46 | #endif
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| 47 |
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| 48 | #include "globals.hh"
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| 49 | #include "G4ParticleTable.hh"
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| 50 | #include "Randomize.hh"
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| 51 | #include "G4Event.hh"
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| 52 | #include "G4ParticleGun.hh"
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| 53 | #include "G4IonTable.hh"
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| 54 | #include "G4UImanager.hh"
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| 55 | #include "G4RunManager.hh"
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| 56 |
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| 57 | BrachyPrimaryGeneratorActionIr::BrachyPrimaryGeneratorActionIr()
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| 58 | {
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| 59 | G4int NumParticles = 1;
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| 60 | particleGun = new G4ParticleGun(NumParticles);
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| 61 | }
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| 62 |
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| 63 | BrachyPrimaryGeneratorActionIr::~BrachyPrimaryGeneratorActionIr()
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| 64 | {
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| 65 | if(particleGun)
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| 66 | delete particleGun;
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| 67 | }
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| 68 |
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| 69 | void BrachyPrimaryGeneratorActionIr::GeneratePrimaries(G4Event* anEvent)
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| 70 | {
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| 71 | #ifdef G4ANALYSIS_USE
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| 72 | BrachyAnalysisManager* analysis = BrachyAnalysisManager::getInstance();
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| 73 | #endif
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| 74 |
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| 75 | G4ParticleTable* pParticleTable = G4ParticleTable::GetParticleTable();
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| 76 | G4String ParticleName = "gamma";
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| 77 | G4ParticleDefinition* pParticle = pParticleTable->FindParticle(ParticleName);
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| 78 | particleGun->SetParticleDefinition(pParticle);
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| 79 |
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| 80 | // Random generation of gamma source point inside the Iodium core
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| 81 | G4double x,y,z;
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| 82 | G4double radius = 0.30*mm;
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| 83 | do{
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| 84 | x = (G4UniformRand()-0.5)*(radius)/0.5;
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| 85 | y = (G4UniformRand()-0.5)*(radius)/0.5;
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| 86 | }while(x*x+y*y > radius*radius);
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| 87 |
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| 88 | z = (G4UniformRand()-0.5)*1.75*mm/0.5 -1.975*mm ;
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| 89 |
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| 90 | G4ThreeVector position(x,y,z);
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| 91 | particleGun->SetParticlePosition(position);
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| 92 | // Random generation of the impulse direction
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| 93 | G4double a,b,c;
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| 94 | G4double n;
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| 95 | do{
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| 96 | a = (G4UniformRand()-0.5)/0.5;
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| 97 | b = (G4UniformRand()-0.5)/0.5;
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| 98 | c = (G4UniformRand()-0.5)/0.5;
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| 99 | n = a*a+b*b+c*c;
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| 100 | }while(n > 1 || n == 0.0);
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| 101 | n = std::sqrt(n);
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| 102 | a /= n;
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| 103 | b /= n;
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| 104 | c /= n;
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| 105 |
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| 106 | G4ThreeVector direction(a,b,c);
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| 107 | particleGun -> SetParticleMomentumDirection(direction);
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| 108 |
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| 109 | primaryParticleEnergy = 356*keV;
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| 110 | particleGun -> SetParticleEnergy(primaryParticleEnergy);
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| 111 |
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| 112 | //1D Histogram of primary particle energy ...
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| 113 | #ifdef G4ANALYSIS_USE
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| 114 | analysis -> PrimaryParticleEnergySpectrum(primaryParticleEnergy);
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| 115 | #endif
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| 116 | particleGun -> GeneratePrimaryVertex(anEvent);
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| 117 | }
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| 118 |
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