[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 | // |
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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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