CheckSecondary.cc

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#include "SimG4Core/CheckSecondary/interface/CheckSecondary.h"
#include "SimG4Core/CheckSecondary/interface/TreatSecondary.h"
#include "SimG4Core/Physics/interface/G4ProcessTypeEnumerator.h"

#include "FWCore/Framework/interface/Event.h"
#include "FWCore/Framework/interface/EventSetup.h"

#include "SimG4Core/Notification/interface/BeginOfEvent.h"
#include "SimG4Core/Notification/interface/BeginOfTrack.h"
#include "SimG4Core/Notification/interface/EndOfEvent.h"

#include "FWCore/MessageLogger/interface/MessageLogger.h"

#include "CLHEP/Units/GlobalPhysicalConstants.h"
#include "CLHEP/Units/GlobalSystemOfUnits.h"
#include "G4HCofThisEvent.hh"
#include "G4Step.hh"
#include "G4Track.hh"
#include "G4VProcess.hh"

#include <cmath>
#include <iomanip>
#include <iostream>

CheckSecondary::CheckSecondary(const edm::ParameterSet &p)
    : treatSecondary(nullptr),
      typeEnumerator(nullptr),
      nsec(nullptr),
      procids(nullptr),
      px(nullptr),
      py(nullptr),
      pz(nullptr),
      mass(nullptr),
      deltae(nullptr),
      procs(nullptr),
      file(nullptr),
      tree(nullptr) {
  edm::ParameterSet m_p = p.getParameter<edm::ParameterSet>("CheckSecondary");
  std::string saveFile = m_p.getUntrackedParameter<std::string>("SaveInFile", "None");
  treatSecondary = new TreatSecondary(m_p);
  typeEnumerator = new G4ProcessTypeEnumerator();

  nsec = new std::vector<int>();
  px = new std::vector<double>();
  py = new std::vector<double>();
  pz = new std::vector<double>();
  mass = new std::vector<double>();
  deltae = new std::vector<double>();
  procids = new std::vector<int>();
  procs = new std::vector<std::string>();

  if (saveFile != "None") {
    saveToTree = true;
    tree = bookTree(saveFile);
    edm::LogInfo("CheckSecondary") << "Instantiate CheckSecondary with first"
                                   << " hadronic interaction information"
                                   << " to be saved in file " << saveFile;
  } else {
    saveToTree = false;
    edm::LogInfo("CheckSecondary") << "Instantiate CheckSecondary with first"
                                   << " hadronic interaction information"
                                   << " not saved";
  }
}

CheckSecondary::~CheckSecondary() {
  if (saveToTree)
    endTree();
  if (nsec)
    delete nsec;
  if (px)
    delete px;
  if (py)
    delete py;
  if (pz)
    delete pz;
  if (mass)
    delete mass;
  if (deltae)
    delete deltae;
  if (procs)
    delete procs;
  if (procids)
    delete procids;
  if (typeEnumerator)
    delete typeEnumerator;
  if (treatSecondary)
    delete treatSecondary;
}

TTree *CheckSecondary::bookTree(std::string fileName) {
  file = new TFile(fileName.c_str(), "RECREATE");
  file->cd();

  TTree *t1 = new TTree("T1", "Secondary Particle Information");
  t1->Branch("SecondaryPx", "std::vector<double>", &px);
  t1->Branch("SecondaryPy", "std::vector<double>", &py);
  t1->Branch("SecondaryPz", "std::vector<double>", &pz);
  t1->Branch("SecondaryMass", "std::vector<double>", &mass);
  t1->Branch("NumberSecondaries", "std::vector<int>", &nsec);
  t1->Branch("DeltaEinInteract", "std::vector<double>", &deltae);
  t1->Branch("ProcessID", "std::vector<int>", &procids);
  t1->Branch("ProcessNames", "std::vector<std::string>", &procs);
  return t1;
}

void CheckSecondary::endTree() {
  edm::LogInfo("CheckSecondary") << "Save the Secondary Tree " << tree->GetName() << " (" << tree << ") in file "
                                 << file->GetName() << " (" << file << ")";
  file->cd();
  tree->Write();
  file->Close();
  delete file;
}

void CheckSecondary::update(const BeginOfEvent *evt) {
  int iev = (*evt)()->GetEventID();
  LogDebug("CheckSecondary") << "CheckSecondary::=====> Begin of event = " << iev;

  (*nsec).clear();
  (*procs).clear();
  (*procids).clear();
  (*deltae).clear();
  (*px).clear();
  (*py).clear();
  (*pz).clear();
  (*mass).clear();
}

void CheckSecondary::update(const BeginOfTrack *trk) {
  const G4Track *thTk = (*trk)();
  treatSecondary->initTrack(thTk);
  if (thTk->GetParentID() <= 0)
    storeIt = true;
  else
    storeIt = false;
  nHad = 0;
  LogDebug("CheckSecondary") << "CheckSecondary:: Track " << thTk->GetTrackID() << " Parent " << thTk->GetParentID()
                             << " Flag " << storeIt;
}

void CheckSecondary::update(const G4Step *aStep) {
  std::string name;
  int procID;
  bool hadrInt;
  double deltaE;
  std::vector<int> charge;
  std::vector<math::XYZTLorentzVector> tracks = treatSecondary->tracks(aStep, name, procID, hadrInt, deltaE, charge);
  if (storeIt && hadrInt) {
    double pInit = (aStep->GetPreStepPoint()->GetMomentum()).mag();
    double pEnd = (aStep->GetPostStepPoint()->GetMomentum()).mag();
    nHad++;
    int sec = (int)(tracks.size());
    LogDebug("CheckSecondary") << "CheckSecondary:: Hadronic Interaction " << nHad << " of type " << name << " ID "
                               << procID << " with " << sec << " secondaries "
                               << " and Momentum (MeV/c) at start " << pInit << " and at end " << pEnd;
    (*nsec).push_back(sec);
    (*procs).push_back(name);
    (*procids).push_back(procID);
    (*deltae).push_back(deltaE);
    if (nHad == 1) {
      for (int i = 0; i < sec; i++) {
        double m = tracks[i].M();
        if (charge[i] < 0)
          m = -m;
        (*px).push_back(tracks[i].Px());
        (*py).push_back(tracks[i].Py());
        (*pz).push_back(tracks[i].Pz());
        (*mass).push_back(m);
      }
    }
  }
}

void CheckSecondary::update(const EndOfEvent *evt) {
  LogDebug("CheckSecondary") << "CheckSecondary::EndofEvent =====> Event " << (*evt)()->GetEventID() << " with "
                             << (*nsec).size() << " hadronic collisions with"
                             << " secondaries produced in each step";
  for (unsigned int i = 0; i < (*nsec).size(); i++)
    LogDebug("CheckSecondary") << " " << (*nsec)[i] << " from " << (*procs)[i] << " ID " << (*procids)[i] << " ("
                               << typeEnumerator->processG4Name((*procids)[i]) << ") deltaE = " << (*deltae)[i]
                               << " MeV";
  LogDebug("CheckSecondary") << "And " << (*mass).size() << " secondaries "
                             << "produced in the first interactions";
  for (unsigned int i = 0; i < (*mass).size(); i++)
    LogDebug("CheckSecondary") << "Secondary " << i << " (" << (*px)[i] << ", " << (*py)[i] << ", " << (*pz)[i] << ", "
                               << (*mass)[i] << ")";

  if (saveToTree)
    tree->Fill();
}