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PHG4InnerHcalSteppingAction.cc
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PHG4InnerHcalSteppingAction.cc
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#include "PHG4InnerHcalSteppingAction.h"
#include "PHG4InnerHcalDetector.h"
#include "PHG4StepStatusDecode.h"
#include <phparameter/PHParameters.h>
#include <g4main/PHG4Hit.h>
#include <g4main/PHG4HitContainer.h>
#include <g4main/PHG4Hitv1.h>
#include <g4main/PHG4Shower.h>
#include <g4main/PHG4SteppingAction.h> // for PHG4SteppingAction
#include <g4main/PHG4TrackUserInfoV1.h>
#include <phool/getClass.h>
#include <TSystem.h>
#include <Geant4/G4ParticleDefinition.hh> // for G4ParticleDefinition
#include <Geant4/G4ReferenceCountedHandle.hh> // for G4ReferenceCountedHandle
#include <Geant4/G4Step.hh>
#include <Geant4/G4StepPoint.hh> // for G4StepPoint
#include <Geant4/G4StepStatus.hh> // for fGeomBoundary, fAtRest...
#include <Geant4/G4String.hh> // for G4String
#include <Geant4/G4SystemOfUnits.hh>
#include <Geant4/G4ThreeVector.hh> // for G4ThreeVector
#include <Geant4/G4TouchableHandle.hh> // for G4TouchableHandle
#include <Geant4/G4Track.hh> // for G4Track
#include <Geant4/G4TrackStatus.hh> // for fStopAndKill
#include <Geant4/G4Types.hh> // for G4double
#include <Geant4/G4VPhysicalVolume.hh> // for G4VPhysicalVolume
#include <Geant4/G4VTouchable.hh> // for G4VTouchable
#include <Geant4/G4VUserTrackInformation.hh> // for G4VUserTrackInformation
#include <cmath> // for isfinite
#include <iostream>
#include <string> // for operator<<, operator+
#include <utility> // for pair
class PHCompositeNode;
using namespace std;
//____________________________________________________________________________..
PHG4InnerHcalSteppingAction::PHG4InnerHcalSteppingAction(PHG4InnerHcalDetector* detector, const PHParameters* parameters)
: PHG4SteppingAction(detector->GetName())
, m_Detector(detector)
, m_Hits(nullptr)
, m_AbsorberHits(nullptr)
, m_Hit(nullptr)
, m_Params(parameters)
, m_SaveHitContainer(nullptr)
, m_SaveShower(nullptr)
, m_SaveVolPre(nullptr)
, m_SaveVolPost(nullptr)
, m_SaveTrackId(-1)
, m_SavePreStepStatus(-1)
, m_SavePostStepStatus(-1)
, m_IsActive(m_Params->get_int_param("active"))
, m_IsBlackHole(m_Params->get_int_param("blackhole"))
, m_LightScintModel(m_Params->get_int_param("light_scint_model"))
{
SetLightCorrection(m_Params->get_double_param("light_balance_inner_radius") * cm,
m_Params->get_double_param("light_balance_inner_corr"),
m_Params->get_double_param("light_balance_outer_radius") * cm,
m_Params->get_double_param("light_balance_outer_corr"));
}
PHG4InnerHcalSteppingAction::~PHG4InnerHcalSteppingAction()
{
// if the last hit was a zero energie deposit hit, it is just reset
// and the memory is still allocated, so we need to delete it here
// if the last hit was saved, hit is a nullptr pointer which are
// legal to delete (it results in a no operation)
delete m_Hit;
}
//____________________________________________________________________________..
bool PHG4InnerHcalSteppingAction::UserSteppingAction(const G4Step* aStep, bool)
{
G4TouchableHandle touch = aStep->GetPreStepPoint()->GetTouchableHandle();
G4TouchableHandle touchpost = aStep->GetPostStepPoint()->GetTouchableHandle();
// get volume of the current step
G4VPhysicalVolume* volume = touch->GetVolume();
// m_Detector->IsInInnerHcal(volume)
// returns
// 0 is outside of InnerHcal
// 1 is inside scintillator
// -1 is steel absorber
int whichactive = m_Detector->IsInInnerHcal(volume);
if (!whichactive)
{
return false;
}
int layer_id = -1;
int tower_id = -1;
if (whichactive > 0) // scintillator
{
pair<int, int> layer_tower = m_Detector->GetLayerTowerId(volume);
layer_id = layer_tower.first;
tower_id = layer_tower.second;
// cout << "name " << volume->GetName() << ", mid: " << layer_id
// << ", twr: " << tower_id << endl;
}
else
{
layer_id = touch->GetCopyNumber(); // steel plate id
}
// collect energy and track length step by step
G4double edep = aStep->GetTotalEnergyDeposit() / GeV;
G4double eion = (aStep->GetTotalEnergyDeposit() - aStep->GetNonIonizingEnergyDeposit()) / GeV;
G4double light_yield = 0;
const G4Track* aTrack = aStep->GetTrack();
// if this block stops everything, just put all kinetic energy into edep
if (m_IsBlackHole)
{
edep = aTrack->GetKineticEnergy() / GeV;
G4Track* killtrack = const_cast<G4Track*>(aTrack);
killtrack->SetTrackStatus(fStopAndKill);
}
// make sure we are in a volume
if (m_IsActive)
{
bool geantino = false;
// the check for the pdg code speeds things up, I do not want to make
// an expensive string compare for every track when we know
// geantino or chargedgeantino has pid=0
if (aTrack->GetParticleDefinition()->GetPDGEncoding() == 0 &&
aTrack->GetParticleDefinition()->GetParticleName().find("geantino") != string::npos)
{
geantino = true;
}
G4StepPoint* prePoint = aStep->GetPreStepPoint();
G4StepPoint* postPoint = aStep->GetPostStepPoint();
// cout << "track id " << aTrack->GetTrackID() << endl;
// cout << "time prepoint: " << prePoint->GetGlobalTime() << endl;
// cout << "time postpoint: " << postPoint->GetGlobalTime() << endl;
switch (prePoint->GetStepStatus())
{
case fPostStepDoItProc:
if (m_SavePostStepStatus != fGeomBoundary)
{
break;
}
else
{
cout << GetName() << ": New Hit for " << endl;
cout << "prestep status: " << PHG4StepStatusDecode::GetStepStatus(prePoint->GetStepStatus())
<< ", poststep status: " << PHG4StepStatusDecode::GetStepStatus(postPoint->GetStepStatus())
<< ", last pre step status: " << PHG4StepStatusDecode::GetStepStatus(m_SavePreStepStatus)
<< ", last post step status: " << PHG4StepStatusDecode::GetStepStatus(m_SavePostStepStatus) << endl;
cout << "last track: " << m_SaveTrackId
<< ", current trackid: " << aTrack->GetTrackID() << endl;
cout << "phys pre vol: " << volume->GetName()
<< " post vol : " << touchpost->GetVolume()->GetName() << endl;
cout << " previous phys pre vol: " << m_SaveVolPre->GetName()
<< " previous phys post vol: " << m_SaveVolPost->GetName() << endl;
}
[[fallthrough]];
case fGeomBoundary:
case fUndefined:
// if previous hit was saved, hit pointer was set to nullptr
// and we have to make a new one
if (!m_Hit)
{
m_Hit = new PHG4Hitv1();
}
//here we set the entrance values in cm
m_Hit->set_x(0, prePoint->GetPosition().x() / cm);
m_Hit->set_y(0, prePoint->GetPosition().y() / cm);
m_Hit->set_z(0, prePoint->GetPosition().z() / cm);
// time in ns
m_Hit->set_t(0, prePoint->GetGlobalTime() / nanosecond);
//set and save the track ID
m_Hit->set_trkid(aTrack->GetTrackID());
m_SaveTrackId = aTrack->GetTrackID();
//set the initial energy deposit
m_Hit->set_edep(0);
if (whichactive > 0) // return of IsInInnerHcalDetector, > 0 hit in scintillator, < 0 hit in absorber
{
m_Hit->set_scint_id(tower_id); // the slat id
m_Hit->set_eion(0); // only implemented for v5 otherwise empty
m_Hit->set_light_yield(0); // for scintillator only, initialize light yields
// Now save the container we want to add this hit to
m_SaveHitContainer = m_Hits;
}
else
{
m_SaveHitContainer = m_AbsorberHits;
}
if (G4VUserTrackInformation* p = aTrack->GetUserInformation())
{
if (PHG4TrackUserInfoV1* pp = dynamic_cast<PHG4TrackUserInfoV1*>(p))
{
m_Hit->set_trkid(pp->GetUserTrackId());
m_Hit->set_shower_id(pp->GetShower()->get_id());
m_SaveShower = pp->GetShower();
}
}
break;
default:
break;
}
// some sanity checks for inconsistencies
// check if this hit was created, if not print out last post step status
if (!m_Hit || !isfinite(m_Hit->get_x(0)))
{
cout << GetName() << ": hit was not created" << endl;
cout << "prestep status: " << PHG4StepStatusDecode::GetStepStatus(prePoint->GetStepStatus())
<< ", poststep status: " << PHG4StepStatusDecode::GetStepStatus(postPoint->GetStepStatus())
<< ", last pre step status: " << PHG4StepStatusDecode::GetStepStatus(m_SavePreStepStatus)
<< ", last post step status: " << PHG4StepStatusDecode::GetStepStatus(m_SavePostStepStatus) << endl;
cout << "last track: " << m_SaveTrackId
<< ", current trackid: " << aTrack->GetTrackID() << endl;
cout << "phys pre vol: " << volume->GetName()
<< " post vol : " << touchpost->GetVolume()->GetName() << endl;
cout << " previous phys pre vol: " << m_SaveVolPre->GetName()
<< " previous phys post vol: " << m_SaveVolPost->GetName() << endl;
gSystem->Exit(1);
}
// check if track id matches the initial one when the hit was created
if (aTrack->GetTrackID() != m_SaveTrackId)
{
cout << GetName() << ": hits do not belong to the same track" << endl;
cout << "saved track: " << m_SaveTrackId
<< ", current trackid: " << aTrack->GetTrackID()
<< ", prestep status: " << prePoint->GetStepStatus()
<< ", previous post step status: " << m_SavePostStepStatus
<< endl;
gSystem->Exit(1);
}
m_SavePreStepStatus = prePoint->GetStepStatus();
m_SavePostStepStatus = postPoint->GetStepStatus();
m_SaveVolPre = volume;
m_SaveVolPost = touchpost->GetVolume();
// here we just update the exit values, it will be overwritten
// for every step until we leave the volume or the particle
// ceases to exist
m_Hit->set_x(1, postPoint->GetPosition().x() / cm);
m_Hit->set_y(1, postPoint->GetPosition().y() / cm);
m_Hit->set_z(1, postPoint->GetPosition().z() / cm);
m_Hit->set_t(1, postPoint->GetGlobalTime() / nanosecond);
//sum up the energy to get total deposited
m_Hit->set_edep(m_Hit->get_edep() + edep);
if (whichactive > 0) // return of IsInInnerHcalDetector, > 0 hit in scintillator, < 0 hit in absorber
{
m_Hit->set_eion(m_Hit->get_eion() + eion);
light_yield = eion;
if (m_LightScintModel)
{
light_yield = GetVisibleEnergyDeposition(aStep); // for scintillator only, calculate light yields
}
light_yield = light_yield * GetLightCorrection(postPoint->GetPosition().x(), postPoint->GetPosition().y());
m_Hit->set_light_yield(m_Hit->get_light_yield() + light_yield);
}
if (geantino)
{
m_Hit->set_edep(-1); // only energy=0 g4hits get dropped, this way geantinos survive the g4hit compression
m_Hit->set_eion(-1);
}
if (edep > 0)
{
if (G4VUserTrackInformation* p = aTrack->GetUserInformation())
{
if (PHG4TrackUserInfoV1* pp = dynamic_cast<PHG4TrackUserInfoV1*>(p))
{
pp->SetKeep(1); // we want to keep the track
}
}
}
// if any of these conditions is true this is the last step in
// this volume and we need to save the hit
// postPoint->GetStepStatus() == fGeomBoundary: track leaves this volume
// postPoint->GetStepStatus() == fWorldBoundary: track leaves this world
// (happens when your detector goes outside world volume)
// postPoint->GetStepStatus() == fAtRestDoItProc: track stops (typically
// aTrack->GetTrackStatus() == fStopAndKill is also set)
// aTrack->GetTrackStatus() == fStopAndKill: track ends
if (postPoint->GetStepStatus() == fGeomBoundary ||
postPoint->GetStepStatus() == fWorldBoundary ||
postPoint->GetStepStatus() == fAtRestDoItProc ||
aTrack->GetTrackStatus() == fStopAndKill)
{
// save only hits with energy deposit (or -1 for geantino)
if (m_Hit->get_edep())
{
m_SaveHitContainer->AddHit(layer_id, m_Hit);
if (m_SaveShower)
{
m_SaveShower->add_g4hit_id(m_SaveHitContainer->GetID(), m_Hit->get_hit_id());
}
// ownership has been transferred to container, set to null
// so we will create a new hit for the next track
m_Hit = nullptr;
}
else
{
// if this hit has no energy deposit, just reset it for reuse
// this means we have to delete it in the dtor. If this was
// the last hit we processed the memory is still allocated
m_Hit->Reset();
}
}
// return true to indicate the hit was used
return true;
}
else
{
return false;
}
}
//____________________________________________________________________________..
void PHG4InnerHcalSteppingAction::SetInterfacePointers(PHCompositeNode* topNode)
{
string hitnodename;
string absorbernodename;
if (m_Detector->SuperDetector() != "NONE")
{
hitnodename = "G4HIT_" + m_Detector->SuperDetector();
absorbernodename = "G4HIT_ABSORBER_" + m_Detector->SuperDetector();
}
else
{
hitnodename = "G4HIT_" + m_Detector->GetName();
absorbernodename = "G4HIT_ABSORBER_" + m_Detector->GetName();
}
//now look for the map and grab a pointer to it.
m_Hits = findNode::getClass<PHG4HitContainer>(topNode, hitnodename.c_str());
m_AbsorberHits = findNode::getClass<PHG4HitContainer>(topNode, absorbernodename.c_str());
// if we do not find the node it's messed up.
if (!m_Hits)
{
std::cout << "PHG4InnerHcalSteppingAction::SetTopNode - unable to find " << hitnodename << std::endl;
}
if (!m_AbsorberHits)
{
if (Verbosity() > 1)
{
cout << "PHG4HcalSteppingAction::SetTopNode - unable to find " << absorbernodename << endl;
}
}
}