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b4a16de652ec244f7a0ecc0a5cacfee21930bf75
geant4/examples/advanced/CaTS/src/lArTPCSD.cc
T
Gabriele Cosmo b4a16de652 Import Geant4 11.4.0 source tree
2025-12-05 08:54:02 +01:00

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//
// ********************************************************************
// * License and Disclaimer *
// * *
// * The Geant4 software is copyright of the Copyright Holders of *
// * the Geant4 Collaboration. It is provided under the terms and *
// * conditions of the Geant4 Software License, included in the file *
// * LICENSE and available at http://cern.ch/geant4/license . These *
// * include a list of copyright holders. *
// * *
// * Neither the authors of this software system, nor their employing *
// * institutes,nor the agencies providing financial support for this *
// * work make any representation or warranty, express or implied, *
// * regarding this software system or assume any liability for its *
// * use. Please see the license in the file LICENSE and URL above *
// * for the full disclaimer and the limitation of liability. *
// * *
// * This code implementation is the result of the scientific and *
// * technical work of the GEANT4 collaboration. *
// * By using, copying, modifying or distributing the software (or *
// * any work based on the software) you agree to acknowledge its *
// * use in resulting scientific publications, and indicate your *
// * acceptance of all terms of the Geant4 Software license. *
// ********************************************************************
//
// CaTS (Calorimetry and Tracking Simulation)
//
// Authors: Hans Wenzel and Soon Yung Jun
// (Fermi National Accelerator Laboratory)
//
// History: October 18th, 2021 : first implementation
//
// ********************************************************************
//
/// \file lArTPCSD.cc
/// \brief Implementation of the CaTS::lArTPCSD class
// Geant4 headers
#include "G4HCofThisEvent.hh"
#include "G4Step.hh"
#include "G4ThreeVector.hh"
#include "G4SDManager.hh"
#include "G4ios.hh"
#include "G4Track.hh"
#ifdef WITH_G4OPTICKS
# include "G4Opticks.hh"
# include "TrackInfo.hh"
# include "OpticksGenstep.h"
# include "OpticksFlags.hh"
# include "G4OpticksHit.hh"
# include "G4Cerenkov.hh"
# include "G4Event.hh"
# include "G4MaterialPropertiesTable.hh"
# include "G4PhysicalConstants.hh"
# include "G4RunManager.hh"
# include "G4SteppingManager.hh"
# include "G4SystemOfUnits.hh"
# include "G4UnitsTable.hh"
# include "G4VProcess.hh"
# include "G4VRestDiscreteProcess.hh"
# include "PhotonSD.hh"
# include "G4Cerenkov.hh"
# include "G4Scintillation.hh"
# include "G4Version.hh"
#endif
// project headers
#include "lArTPCSD.hh"
#include "ConfigurationManager.hh"
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
lArTPCSD::lArTPCSD(G4String name)
: G4VSensitiveDetector(name)
{
G4String HCname = name + "_HC";
collectionName.insert(HCname);
verbose = ConfigurationManager::getInstance()->isEnable_verbose();
if(verbose)
{
G4cout << collectionName.size() << " lArTPCSD name: " << name
<< " collection Name: " << HCname << G4endl;
}
fHCID = -1;
first = true;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
void lArTPCSD::Initialize(G4HCofThisEvent* hce)
{
flArTPCHitsCollection =
new lArTPCHitsCollection(SensitiveDetectorName, collectionName[0]);
if(fHCID < 0)
{
if(verbose)
{
G4cout << "lArTPCSD::Initialize: " << SensitiveDetectorName << " "
<< collectionName[0] << G4endl;
}
fHCID = G4SDManager::GetSDMpointer()->GetCollectionID(collectionName[0]);
}
hce->AddHitsCollection(fHCID, flArTPCHitsCollection);
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
G4bool lArTPCSD::ProcessHits(G4Step* aStep, G4TouchableHistory*)
{
G4double edep = aStep->GetTotalEnergyDeposit();
if(edep == 0.)
return false;
// only deal with charged particles
G4Track* aTrack = aStep->GetTrack();
G4double charge = aTrack->GetDynamicParticle()->GetCharge();
if(charge == 0)
return false;
G4double ds = aStep->GetStepLength();
lArTPCHit* newHit = new lArTPCHit(
NumElectrons(edep, ds), aStep->GetPostStepPoint()->GetPosition().getX(),
aStep->GetPostStepPoint()->GetPosition().getY(),
aStep->GetPostStepPoint()->GetPosition().getZ());
flArTPCHitsCollection->insert(newHit);
#ifdef WITH_G4OPTICKS
if(ConfigurationManager::getInstance()->isEnable_opticks())
{
if(first)
{
aMaterial = aTrack->GetMaterial();
materialIndex = aMaterial->GetIndex();
if(verbose)
{
G4cout << "*******************************" << G4endl;
G4cout << "RadiatorSD::ProcessHits initializing Material: "
<< aMaterial->GetName() << " " << G4endl;
G4cout << "RadiatorSD::ProcessHits: Name "
<< aStep->GetPreStepPoint()
->GetPhysicalVolume()
->GetLogicalVolume()
->GetName()
<< G4endl;
}
aMaterialPropertiesTable = aMaterial->GetMaterialPropertiesTable();
if(verbose)
{
aMaterialPropertiesTable->DumpTable();
}
//
// properties related to Scintillation
//
# if(G4VERSION_NUMBER > 1072)
YieldRatio =
aMaterialPropertiesTable->GetConstProperty(kSCINTILLATIONYIELD1) /
aMaterialPropertiesTable->GetConstProperty(
kSCINTILLATIONYIELD2); // slowerRatio,
FastTimeConstant = aMaterialPropertiesTable->GetConstProperty(
kSCINTILLATIONTIMECONSTANT1); // TimeConstant,
SlowTimeConstant = aMaterialPropertiesTable->GetConstProperty(
kSCINTILLATIONTIMECONSTANT2); // slowerTimeConstant,
# else
Fast_Intensity = aMaterialPropertiesTable->GetProperty(kFASTCOMPONENT);
Slow_Intensity = aMaterialPropertiesTable->GetProperty(kSLOWCOMPONENT);
YieldRatio = aMaterialPropertiesTable->GetConstProperty(kYIELDRATIO);
# endif
ScintillationType = Slow;
//
// properties related to Cerenkov
//
Rindex = aMaterialPropertiesTable->GetProperty("RINDEX");
# if(G4VERSION_NUMBER > 1072)
Pmin = Rindex->GetMinEnergy();
Pmax = Rindex->GetMaxEnergy();
# else
Pmin = Rindex->GetMinLowEdgeEnergy();
Pmax = Rindex->GetMaxLowEdgeEnergy();
# endif
dp = Pmax - Pmin;
if(verbose)
{
G4cout << "nMax: " << nMax << "Pmin: " << Pmin << "Pmax: " << Pmax
<< "dp: " << dp << G4endl;
Rindex->DumpValues();
}
//
first = false;
}
G4int Sphotons = 0; // number of scintillation photons this step
G4int Cphotons = 0; // number of Cerenkov photons this step
//
// info needed for generating Cerenkov photons on the GPU;
//
G4double maxCos = 0.0;
G4double maxSin2 = 0.0;
G4double beta = 0.0;
G4double beta1 = 0.0;
G4double beta2 = 0.0;
G4double BetaInverse = 0.0;
G4double MeanNumberOfPhotons1 = 0.0;
G4double MeanNumberOfPhotons2 = 0.0;
G4SteppingManager* fpSteppingManager = G4EventManager::GetEventManager()
->GetTrackingManager()
->GetSteppingManager();
G4StepStatus stepStatus = fpSteppingManager->GetfStepStatus();
if(stepStatus != fAtRestDoItProc)
{
G4ProcessVector* procPost = fpSteppingManager->GetfPostStepDoItVector();
size_t MAXofPostStepLoops = fpSteppingManager->GetMAXofPostStepLoops();
for(size_t i3 = 0; i3 < MAXofPostStepLoops; i3++)
{
if((*procPost)[i3]->GetProcessName() == "Cerenkov")
{
G4Cerenkov* proc = (G4Cerenkov*) (*procPost)[i3];
thePhysicsTable = proc->GetPhysicsTable();
CerenkovAngleIntegrals =
(G4PhysicsOrderedFreeVector*) ((*thePhysicsTable)(materialIndex));
Cphotons = proc->GetNumPhotons();
if(Cphotons > 0)
{
beta1 = aStep->GetPreStepPoint()->GetBeta();
beta2 = aStep->GetPostStepPoint()->GetBeta();
beta = (beta1 + beta2) * 0.5;
BetaInverse = 1. / beta;
maxCos = BetaInverse / nMax;
maxSin2 = (1.0 - maxCos) * (1.0 + maxCos);
MeanNumberOfPhotons1 =
proc->GetAverageNumberOfPhotons(charge, beta1, aMaterial, Rindex);
MeanNumberOfPhotons2 =
proc->GetAverageNumberOfPhotons(charge, beta2, aMaterial, Rindex);
}
}
if((*procPost)[i3]->GetProcessName() == "Scintillation")
{
G4Scintillation* proc1 = (G4Scintillation*) (*procPost)[i3];
Sphotons = proc1->GetNumPhotons();
}
}
}
tSphotons += Sphotons;
tCphotons += Cphotons;
G4ThreeVector deltaPosition = aStep->GetDeltaPosition();
G4double ScintillationTime = 0. * ns;
G4int scntId = 1;
G4StepPoint* pPreStepPoint = aStep->GetPreStepPoint();
G4ThreeVector x0 = pPreStepPoint->GetPosition();
G4ThreeVector p0 = aStep->GetDeltaPosition().unit();
//
// harvest the Scintillation photon gensteps:
//
if(Sphotons > 0)
{
G4double ScintillationRiseTime = 0.0;
G4Opticks::Get()->collectGenstep_G4Scintillation_1042(
aTrack, aStep, Sphotons, scntId, ScintillationTime,
ScintillationRiseTime);
}
//
// harvest the Cerenkov photon gensteps:
//
if(Cphotons > 0)
{
G4Opticks::Get()->collectGenstep_G4Cerenkov_1042(
aTrack, aStep, Cphotons, BetaInverse, Pmin, Pmax, maxCos, maxSin2,
MeanNumberOfPhotons1, MeanNumberOfPhotons2);
}
G4Opticks* g4ok = G4Opticks::Get();
G4RunManager* rm = G4RunManager::GetRunManager();
const G4Event* event = rm->GetCurrentEvent();
G4int eventid = event->GetEventID();
G4OpticksHit hit;
unsigned num_photons = g4ok->getNumPhotons();
if(num_photons > ConfigurationManager::getInstance()->getMaxPhotons())
{
g4ok->propagateOpticalPhotons(eventid);
G4HCtable* hctable = G4SDManager::GetSDMpointer()->GetHCtable();
for(G4int i = 0; i < hctable->entries(); ++i)
{
std::string sdn = hctable->GetSDname(i);
std::size_t found = sdn.find("PhotonDetector");
if(found != std::string::npos)
{
PhotonSD* aSD =
(PhotonSD*) G4SDManager::GetSDMpointer()->FindSensitiveDetector(
sdn);
aSD->AddOpticksHits();
}
}
g4ok->reset();
}
}
#endif
return true;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
void lArTPCSD::EndOfEvent(G4HCofThisEvent*)
{
tSphotons = 0;
tCphotons = 0;
G4int NbHits = flArTPCHitsCollection->entries();
if(verbose)
{
G4cout << " Number of lArTPCHits: " << NbHits << G4endl;
}
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
G4double lArTPCSD::NumElectrons(G4double edep, G4double ds)
{
G4double dEdx = std::max((ds <= 0.0) ? 0.0 : edep / ds, 1.0);
// Nucl.Instrum.Meth.A523:275-286,2004
const G4double fGeVToElectrons = 4.237e+04;
G4double recomb = 0.0;
if(ds > 0)
{
G4double fModBoxA = 0.930;
G4double fModBoxB = 0.212;
G4double Xi = 2.0 * fModBoxB * dEdx;
recomb = std::log(fModBoxA + Xi) / Xi;
}
return fGeVToElectrons * edep * recomb;
}
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