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: G4BlinePrimaryGeneratorAction.cc,v 1.3 2006/06/29 17:15:11 gunter Exp $ |
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28 | // GEANT4 tag $Name: $ |
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29 | // |
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30 | // |
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31 | // -------------------------------------------------------------------- |
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32 | // |
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33 | // G4BlinePrimaryGeneratorAction implementation |
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34 | // |
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35 | // -------------------------------------------------------------------- |
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36 | // Author: Laurent Desorgher (desorgher@phim.unibe.ch) |
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37 | // Created - 2003-10-06 |
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38 | // -------------------------------------------------------------------- |
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39 | |
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40 | #include "G4BlinePrimaryGeneratorAction.hh" |
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41 | |
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42 | #include "G4Types.hh" |
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43 | #include "G4Event.hh" |
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44 | #include "G4ChargedGeantino.hh" |
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45 | |
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46 | /////////////////////////////////////////////////////////////////////////// |
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47 | |
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48 | G4BlinePrimaryGeneratorAction::G4BlinePrimaryGeneratorAction() |
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49 | { |
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50 | fUserPrimaryAction = 0; |
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51 | FirstPartOfBline = true; |
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52 | } |
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53 | |
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54 | /////////////////////////////////////////////////////////////////////////// |
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55 | |
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56 | G4BlinePrimaryGeneratorAction::~G4BlinePrimaryGeneratorAction() |
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57 | { |
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58 | } |
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59 | |
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60 | /////////////////////////////////////////////////////////////////////////// |
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61 | |
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62 | void G4BlinePrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent) |
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63 | { |
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64 | if (!fUserPrimaryAction) |
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65 | { |
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66 | G4Exception("G4BlinePrimaryGeneratorAction::GeneratePrimaries()", |
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67 | "NullPointer", JustWarning, |
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68 | "Primary generator action not defined !"); |
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69 | return; |
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70 | } |
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71 | |
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72 | // For the first part of a bline the start position and time are defined |
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73 | // by using the USER primary action while for the second part the previous |
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74 | // values are taken. |
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75 | |
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76 | if (FirstPartOfBline) |
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77 | { |
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78 | // set the position and time defined by using the USER primary action |
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79 | |
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80 | G4Event* tmpEvent = new G4Event(); |
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81 | fUserPrimaryAction->GeneratePrimaries(tmpEvent); |
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82 | BlineStartPosition = tmpEvent->GetPrimaryVertex()->GetPosition(); |
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83 | T0 = tmpEvent->GetPrimaryVertex()->GetT0(); |
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84 | delete tmpEvent; |
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85 | } |
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86 | FirstPartOfBline = false; |
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87 | |
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88 | G4PrimaryVertex* primary_vertex = |
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89 | new G4PrimaryVertex(BlineStartPosition, T0); |
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90 | |
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91 | // Define the particle to be tracked as Charged Geantino |
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92 | |
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93 | G4ChargedGeantino* pdef = G4ChargedGeantino::ChargedGeantino(); |
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94 | |
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95 | G4double mass = pdef->GetPDGMass(); |
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96 | G4double energy = 10000.*MeV + mass; |
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97 | G4double pmom = std::sqrt(energy*energy-mass*mass); |
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98 | |
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99 | // The momentum direction and energy do not have an effect in tracing of |
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100 | // bline but still need to be defined. |
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101 | |
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102 | G4double px = 0.; |
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103 | G4double py = 0.; |
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104 | G4double pz = pmom; |
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105 | |
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106 | G4PrimaryParticle* particle = new G4PrimaryParticle(pdef,px,py,pz); |
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107 | particle->SetMass( mass ); |
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108 | particle->SetCharge(pdef->GetPDGCharge()); |
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109 | primary_vertex->SetPrimary( particle ); |
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110 | |
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111 | anEvent->AddPrimaryVertex( primary_vertex ); |
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112 | } |
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