| Geant4 Cross Reference |
1 //
2 // ********************************************************************
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24 // ********************************************************************
25 //
26 //---------------------------------------------------------------------
27 //* |\___/| *
28 //* ) ( *
29 //* =\ /= *
30 //* )===( *
31 //* / \ CaTS: Calorimeter and Tracker Simulation *
32 //* | | is a flexible and extend-able framework *
33 //* / \ for the simulation of various detector *
34 //* \ / systems *
35 //* \__ _/ https://github.com/hanswenzel/CaTS *
36 //* ( ( *
37 //* ) ) *
38 //* (_( *
39 //* CaTS also serves as an example that demonstrates how to use *
40 //* opticks from within Geant4 for the creation and propagation of *
41 //* optical photons. *
42 //* see https://bitbucket.org/simoncblyth/opticks.git). *
43 //* Ascii Art by Joan Stark: https://www.asciiworld.com/-Cats-2-.html *
44 //---------------------------------------------------------------------
45 //
46 /// \file readPhotonHits.cc
47 /// \brief example how to read the CaTS::PhotonHits
48 //
49 // Root headers
50 #include "TFile.h"
51 #include "TSystem.h"
52 #include "TTree.h"
53 #include "TH1.h"
54 #include "TH2.h"
55 // Project headers
56 #include "Event.hh"
57 #include "lArTPCHit.hh"
58 #include "PhotonHit.hh"
59
60 int main(int argc, char** argv)
61 {
62 // initialize ROOT
63 TSystem ts;
64 gSystem->Load("libCaTSClassesDict");
65 if(argc < 4)
66 {
67 G4cout << "Program requires 3 arguments: name of input file, name of "
68 "output file, Volume that sensitive detector is attached to"
69 << G4endl;
70 exit(1);
71 }
72 TFile* outfile = new TFile(argv[2], "RECREATE");
73 outfile->cd();
74 TH2F* pos2 = new TH2F("position", "position of Photon Hits", 400, -1000.,
75 1000., 400, -500, 500);
76 TH1F* time = new TH1F("time", "timing of photon hits", 1000, 0., 250.);
77 TH1F* time0 = new TH1F("time0", "timing of photon hits", 1000, 0., 250.);
78 TH1F* time1 = new TH1F("time1", "timing of photon hits", 1000, 0., 250.);
79 TH1F* time2 = new TH1F("time2", "timing of photon hits", 1000, 0., 250.);
80 TH1F* wl = new TH1F("wl", "wavelength of detected photons", 1000, 0., 250.);
81 TH1F* np = new TH1F("np", "number of detected photons", 100, 0., 50.);
82 TFile fo(argv[1]);
83 fo.GetListOfKeys()->Print();
84 Event* event = new Event();
85 TTree* Tevt = (TTree*) fo.Get("Events");
86 Tevt->SetBranchAddress("event.", &event);
87 TBranch* fevtbranch = Tevt->GetBranch("event.");
88 Int_t nevent = fevtbranch->GetEntries();
89 G4cout << "Nr. of Events: " << nevent << G4endl;
90 std::string CollectionName = argv[3];
91 CollectionName = CollectionName + "_Photondetector_HC";
92 for(Int_t i = 0; i < nevent; i++)
93 {
94 fevtbranch->GetEntry(i);
95 auto* hcmap = event->GetHCMap();
96 for(const auto& ele : *hcmap)
97 {
98 auto hits = ele.second;
99 if(ele.first.compare(CollectionName) == 0)
100 {
101 auto hits = ele.second;
102 G4int NbHits = hits.size();
103 G4cout << "Event: " << i << " Number of Hits: " << NbHits << G4endl;
104 np->Fill(NbHits);
105 for(G4int ii = 0; ii < NbHits; ii++)
106 {
107 PhotonHit* photonHit = dynamic_cast<PhotonHit*>(hits.at(ii));
108 time->Fill(photonHit->GetTime());
109 wl->Fill(photonHit->GetWavelength());
110 if(photonHit->GetPosition().getZ() < -100.)
111 time0->Fill(photonHit->GetTime());
112 if(photonHit->GetPosition().getZ() > -100. &&
113 photonHit->GetPosition().getZ() < 100)
114 time1->Fill(photonHit->GetTime());
115 if(photonHit->GetPosition().getZ() < 100.)
116 time2->Fill(photonHit->GetTime());
117 pos2->Fill(photonHit->GetPosition().getZ(),
118 photonHit->GetPosition().getY());
119 }
120 }
121 }
122 }
123 outfile->cd();
124 outfile->Write();
125 }
126