diff --git a/results/.gitignore b/results/.gitignore new file mode 100644 index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391 diff --git a/results/zdc_neutrons_reader.pdf b/results/zdc_neutrons_reader.pdf new file mode 100644 index 0000000000000000000000000000000000000000..a4588e6e3d7f805bf6ae5da718615352665eab4f Binary files /dev/null and b/results/zdc_neutrons_reader.pdf differ diff --git a/results/zdc_neutrons_reader.png b/results/zdc_neutrons_reader.png new file mode 100644 index 0000000000000000000000000000000000000000..7e7c13fb695d72feda97178d2158a78d90470531 Binary files /dev/null and b/results/zdc_neutrons_reader.png differ diff --git a/neutrons_zdc.cxx b/zdc_neutrons.cxx similarity index 100% rename from neutrons_zdc.cxx rename to zdc_neutrons.cxx diff --git a/zdc_neutrons_reader.cxx b/zdc_neutrons_reader.cxx new file mode 100644 index 0000000000000000000000000000000000000000..d6e8c5ee33ce55a8a9b7c5aa9d906c13a7de987b --- /dev/null +++ b/zdc_neutrons_reader.cxx @@ -0,0 +1,44 @@ +#include "HepMC3/GenEvent.h" +#include "HepMC3/ReaderAscii.h" +#include "HepMC3/WriterAscii.h" +#include "HepMC3/Print.h" + +#include "TH1F.h" +#include <iostream> +using namespace HepMC3; + +void zdc_neutrons_reader(){ + + //------------------------------------- + ReaderAscii hepmc_input("data/neutrons_zdc.hepmc"); + int events_parsed = 0; + GenEvent evt(Units::GEV, Units::MM); + + TH1F* h_neutron_energy = new TH1F("n energy","; E [GeV]",100,0,200); + + while(!hepmc_input.failed()) { + // Read event from input file + hepmc_input.read_event(evt); + + // If reading failed - exit loop + if( hepmc_input.failed() ) break; + + for(const auto& v : evt.vertices() ) { + for(const auto& p : v->particles_out() ) { + if(p->pid() == 2112) { + h_neutron_energy->Fill(p->momentum().e()); + } + } + } + evt.clear(); + events_parsed++; + } + std::cout << "Events parsed and written: " << events_parsed << std::endl; + + TCanvas* c = new TCanvas(); + h_neutron_energy->Draw(); + c->SaveAs("results/zdc_neutrons_reader.png"); + c->SaveAs("results/zdc_neutrons_reader.pdf"); +} + +