| [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 | // $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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