| 1 | //
|
|---|
| 2 | // ********************************************************************
|
|---|
| 3 | // * License and Disclaimer *
|
|---|
| 4 | // * *
|
|---|
| 5 | // * The Geant4 software is copyright of the Copyright Holders of *
|
|---|
| 6 | // * the Geant4 Collaboration. It is provided under the terms and *
|
|---|
| 7 | // * conditions of the Geant4 Software License, included in the file *
|
|---|
| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These *
|
|---|
| 9 | // * include a list of copyright holders. *
|
|---|
| 10 | // * *
|
|---|
| 11 | // * Neither the authors of this software system, nor their employing *
|
|---|
| 12 | // * institutes,nor the agencies providing financial support for this *
|
|---|
| 13 | // * work make any representation or warranty, express or implied, *
|
|---|
| 14 | // * regarding this software system or assume any liability for its *
|
|---|
| 15 | // * use. Please see the license in the file LICENSE and URL above *
|
|---|
| 16 | // * for the full disclaimer and the limitation of liability. *
|
|---|
| 17 | // * *
|
|---|
| 18 | // * This code implementation is the result of the scientific and *
|
|---|
| 19 | // * technical work of the GEANT4 collaboration. *
|
|---|
| 20 | // * By using, copying, modifying or distributing the software (or *
|
|---|
| 21 | // * any work based on the software) you agree to acknowledge its *
|
|---|
| 22 | // * use in resulting scientific publications, and indicate your *
|
|---|
| 23 | // * acceptance of all terms of the Geant4 Software license. *
|
|---|
| 24 | // ********************************************************************
|
|---|
| 25 | //
|
|---|
| 26 | // -------------------------------------------------------------------
|
|---|
| 27 | // GEANT 4 class file --- Copyright CERN 1998
|
|---|
| 28 | // CERN Geneva Switzerland
|
|---|
| 29 | //
|
|---|
| 30 | //
|
|---|
| 31 | // File name: eegg -> unit test of e+e- -> gg model
|
|---|
| 32 | //
|
|---|
| 33 | // Author: V.Ivanchenko
|
|---|
| 34 | //
|
|---|
| 35 | // Creation date: 19 October 2006
|
|---|
| 36 | //
|
|---|
| 37 | // Modifications:
|
|---|
| 38 | //
|
|---|
| 39 | // -------------------------------------------------------------------
|
|---|
| 40 |
|
|---|
| 41 | #include "globals.hh"
|
|---|
| 42 | #include "G4eeToTwoGammaModel.hh"
|
|---|
| 43 | #include "G4eeToTwoGammaModel82.hh"
|
|---|
| 44 | #include "G4MaterialCutsCouple.hh"
|
|---|
| 45 | #include "G4DynamicParticle.hh"
|
|---|
| 46 | #include "G4ThreeVector.hh"
|
|---|
| 47 | #include "G4Positron.hh"
|
|---|
| 48 | #include "G4ios.hh"
|
|---|
| 49 | #include "TFile.h"
|
|---|
| 50 | #include "TH1F.h"
|
|---|
| 51 | #include <iostream>
|
|---|
| 52 | #include <fstream>
|
|---|
| 53 | #include <string>
|
|---|
| 54 | #include <iomanip>
|
|---|
| 55 | #include <vector>
|
|---|
| 56 |
|
|---|
| 57 | int main(int argc, char** argv)
|
|---|
| 58 | {
|
|---|
| 59 | // G4int verbose = 2;
|
|---|
| 60 | G4int nstat = 10000;
|
|---|
| 61 | G4double energy = 10.*GeV;
|
|---|
| 62 | G4double etot = energy + 2.0*electron_mass_c2;
|
|---|
| 63 |
|
|---|
| 64 | G4MaterialCutsCouple* couple = 0;
|
|---|
| 65 | G4ThreeVector dir(0.0,0.0,1.0);
|
|---|
| 66 | G4DynamicParticle* dp0 = new G4DynamicParticle(G4Positron::Positron(),
|
|---|
| 67 | dir,energy);
|
|---|
| 68 | G4DynamicParticle* dp;
|
|---|
| 69 |
|
|---|
| 70 | G4eeToTwoGammaModel* eegg =
|
|---|
| 71 | new G4eeToTwoGammaModel(G4Positron::Positron(),"eegg");
|
|---|
| 72 | G4eeToTwoGammaModel82* eegg82 =
|
|---|
| 73 | new G4eeToTwoGammaModel82(G4Positron::Positron(),"eegg82");
|
|---|
| 74 |
|
|---|
| 75 | std::vector<G4DynamicParticle*>* vdp;
|
|---|
| 76 |
|
|---|
| 77 | TFile tree("eegg10gev.root","RECREATE","eegg");
|
|---|
| 78 |
|
|---|
| 79 | TH1D* h1 = new TH1D( "h1","Gamma Energy",120,0,1);
|
|---|
| 80 | TH1D* h2 = new TH1D( "h2","Gamma Energy",120,0,1);
|
|---|
| 81 | TH1D* h3 = new TH1D( "h3","cos(theta) lab",100,-1,1);
|
|---|
| 82 | TH1D* h4 = new TH1D( "h4","cos(theta) lab",100,-1,1);
|
|---|
| 83 |
|
|---|
| 84 | G4int i, j, n;
|
|---|
| 85 |
|
|---|
| 86 | for(i=0; i<nstat; i++) {
|
|---|
| 87 | vdp = eegg->SampleSecondaries(couple,dp0,0,0);
|
|---|
| 88 | n = vdp->size();
|
|---|
| 89 | for(j=0; j<n; j++) {
|
|---|
| 90 | dp = (*vdp)[j];
|
|---|
| 91 | h1->Fill(dp->GetKineticEnergy()/etot);
|
|---|
| 92 | h3->Fill(dp->GetMomentumDirection().z());
|
|---|
| 93 | delete dp;
|
|---|
| 94 | }
|
|---|
| 95 | delete vdp;
|
|---|
| 96 | vdp = eegg82->SampleSecondaries(couple,dp0,0,0);
|
|---|
| 97 | n = vdp->size();
|
|---|
| 98 | for(j=0; j<n; j++) {
|
|---|
| 99 | dp = (*vdp)[j];
|
|---|
| 100 | h2->Fill(dp->GetKineticEnergy()/etot);
|
|---|
| 101 | h4->Fill(dp->GetMomentumDirection().z());
|
|---|
| 102 | delete dp;
|
|---|
| 103 | }
|
|---|
| 104 | delete vdp;
|
|---|
| 105 | }
|
|---|
| 106 | tree.Write();
|
|---|
| 107 | tree.Close();
|
|---|
| 108 |
|
|---|
| 109 | return 0;
|
|---|
| 110 | }
|
|---|
| 111 |
|
|---|
| 112 |
|
|---|
| 113 |
|
|---|
| 114 |
|
|---|
| 115 |
|
|---|
| 116 |
|
|---|
| 117 |
|
|---|
| 118 |
|
|---|
