RHStopTracer.cc

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#include "SimG4Core/CustomPhysics/interface/RHStopTracer.h"

#include "SimG4Core/Notification/interface/BeginOfRun.h"
#include "SimG4Core/Notification/interface/BeginOfEvent.h"
#include "SimG4Core/Notification/interface/BeginOfTrack.h"
#include "SimG4Core/Notification/interface/EndOfTrack.h"
#include "SimG4Core/Notification/interface/TrackInformation.h"
#include "SimG4Core/Application/interface/TrackingAction.h"

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

#include "G4Track.hh"
#include "G4Run.hh"
#include "G4Event.hh"
#include "G4SystemOfUnits.hh"
#include "G4ParticleTable.hh"
#include "G4ParticleDefinition.hh"

RHStopTracer::RHStopTracer(edm::ParameterSet const& p) {
  edm::ParameterSet parameters = p.getParameter<edm::ParameterSet>("RHStopTracer");
  mStopRegular = parameters.getUntrackedParameter<bool>("stopRegularParticles", false);
  mTraceEnergy = parameters.getUntrackedParameter<double>("traceEnergy", 1.e20);
  mTraceParticleName = parameters.getParameter<std::string>("traceParticle");
  minPdgId = parameters.getUntrackedParameter<int>("minPdgId", 1000000);
  maxPdgId = parameters.getUntrackedParameter<int>("maxPdgId", 2000000);
  otherPdgId = parameters.getUntrackedParameter<int>("otherPdgId", 17);
  produces<std::vector<std::string> >("StoppedParticlesName");
  produces<std::vector<float> >("StoppedParticlesX");
  produces<std::vector<float> >("StoppedParticlesY");
  produces<std::vector<float> >("StoppedParticlesZ");
  produces<std::vector<float> >("StoppedParticlesTime");
  produces<std::vector<int> >("StoppedParticlesPdgId");
  produces<std::vector<float> >("StoppedParticlesMass");
  produces<std::vector<float> >("StoppedParticlesCharge");

  mTraceEnergy *= CLHEP::GeV;
  rePartName = mTraceParticleName;

  edm::LogInfo("SimG4CoreCustomPhysics") << "RHStopTracer::RHStopTracer " << mTraceParticleName
                                         << " Eth(GeV)= " << mTraceEnergy;
}

RHStopTracer::~RHStopTracer() {}

void RHStopTracer::update(const BeginOfRun* fRun) {
  LogDebug("SimG4CoreCustomPhysics") << "RHStopTracer::update-> begin of the run " << (*fRun)()->GetRunID();
}

void RHStopTracer::update(const BeginOfEvent* fEvent) {
  LogDebug("SimG4CoreCustomPhysics") << "RHStopTracer::update-> begin of the event " << (*fEvent)()->GetEventID();
}

void RHStopTracer::update(const BeginOfTrack* fTrack) {
  const G4Track* track = (*fTrack)();
  const G4ParticleDefinition* part = track->GetDefinition();
  const std::string& stringPartName = part->GetParticleName();
  bool matched = false;
  int pdgid = std::abs(part->GetPDGEncoding());
  if ((pdgid > minPdgId && pdgid < maxPdgId) || pdgid == otherPdgId)
    matched = std::regex_match(stringPartName, rePartName);
  if (matched || track->GetKineticEnergy() > mTraceEnergy) {
    LogDebug("SimG4CoreCustomPhysics") << "RHStopTracer::update-> new track: ID/Name/pdgId/mass/charge/Parent: "
                                       << track->GetTrackID() << '/' << part->GetParticleName() << '/'
                                       << part->GetPDGEncoding() << '/' << part->GetPDGMass() / GeV << " GeV/"
                                       << part->GetPDGCharge() << '/' << track->GetParentID()
                                       << " Position: " << track->GetPosition() << ' '
                                       << " R/phi: " << track->GetPosition().perp() << '/' << track->GetPosition().phi()
                                       << "   4vec " << track->GetMomentum();
  } else if (mStopRegular) {  // kill regular particles
    const_cast<G4Track*>(track)->SetTrackStatus(fStopAndKill);
  }
}

void RHStopTracer::update(const EndOfTrack* fTrack) {
  const G4Track* track = (*fTrack)();
  const G4ParticleDefinition* part = track->GetDefinition();
  const std::string& stringPartName = part->GetParticleName();
  bool matched = false;
  int pdgid = std::abs(part->GetPDGEncoding());
  if ((pdgid > minPdgId && pdgid < maxPdgId) || pdgid == otherPdgId)
    matched = std::regex_match(stringPartName, rePartName);
  if (matched || track->GetKineticEnergy() > mTraceEnergy) {
    LogDebug("SimG4CoreCustomPhysics") << "RHStopTracer::update-> stop track: ID/Name/pdgId/mass/charge/Parent: "
                                       << track->GetTrackID() << '/' << part->GetParticleName() << '/'
                                       << part->GetPDGEncoding() << '/' << part->GetPDGMass() / GeV << " GeV/"
                                       << part->GetPDGCharge() << '/' << track->GetParentID()
                                       << " Position: " << track->GetPosition() << ' '
                                       << " R/phi: " << track->GetPosition().perp() << '/' << track->GetPosition().phi()
                                       << "   4vec " << track->GetMomentum();
    if (track->GetMomentum().mag() < 0.001) {
      LogDebug("SimG4CoreCustomPhysics") << "RHStopTracer:: track has stopped, so making StopPoint";
      mStopPoints.push_back(StopPoint(track->GetDefinition()->GetParticleName(),
                                      track->GetPosition().x(),
                                      track->GetPosition().y(),
                                      track->GetPosition().z(),
                                      track->GetGlobalTime(),
                                      track->GetDefinition()->GetPDGEncoding(),
                                      track->GetDefinition()->GetPDGMass() / GeV,
                                      track->GetDefinition()->GetPDGCharge()));
    }
  }
}

void RHStopTracer::produce(edm::Event& fEvent, const edm::EventSetup&) {
  LogDebug("SimG4CoreCustomPhysics") << "RHStopTracer::produce->";

  std::unique_ptr<std::vector<std::string> > names(new std::vector<std::string>);
  std::unique_ptr<std::vector<float> > xs(new std::vector<float>);
  std::unique_ptr<std::vector<float> > ys(new std::vector<float>);
  std::unique_ptr<std::vector<float> > zs(new std::vector<float>);
  std::unique_ptr<std::vector<float> > ts(new std::vector<float>);
  std::unique_ptr<std::vector<int> > ids(new std::vector<int>);
  std::unique_ptr<std::vector<float> > masses(new std::vector<float>);
  std::unique_ptr<std::vector<float> > charges(new std::vector<float>);

  std::vector<StopPoint>::const_iterator stopPoint = mStopPoints.begin();
  for (; stopPoint != mStopPoints.end(); ++stopPoint) {
    names->push_back(stopPoint->name);
    xs->push_back(stopPoint->x);
    ys->push_back(stopPoint->y);
    zs->push_back(stopPoint->z);
    ts->push_back(stopPoint->t);
    ids->push_back(stopPoint->id);
    masses->push_back(stopPoint->mass);
    charges->push_back(stopPoint->charge);
  }
  fEvent.put(std::move(names), "StoppedParticlesName");
  fEvent.put(std::move(xs), "StoppedParticlesX");
  fEvent.put(std::move(ys), "StoppedParticlesY");
  fEvent.put(std::move(zs), "StoppedParticlesZ");
  fEvent.put(std::move(ts), "StoppedParticlesTime");
  fEvent.put(std::move(ids), "StoppedParticlesPdgId");
  fEvent.put(std::move(masses), "StoppedParticlesMass");
  fEvent.put(std::move(charges), "StoppedParticlesCharge");
  mStopPoints.clear();
}