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 | |
---|