Import Geant4 11.0.0 source tree
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Gabriele Cosmo
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Ben Morgan
Ben Morgan
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//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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// ********************************************************************
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//
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// CaTS (Calorimetry and Tracking Simulation)
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//
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// Authors : Hans Wenzel
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// Soon Yung Jun
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// (Fermi National Accelerator Laboratory)
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//
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// History
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// October 18th, 2021 : first implementation
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//
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// ********************************************************************
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//
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/// \file lArTPCSD.cc
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/// \brief Implementation of the CaTS::lArTPCSD class
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// Geant4 headers
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#include "G4HCofThisEvent.hh"
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#include "G4Step.hh"
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#include "G4ThreeVector.hh"
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#include "G4SDManager.hh"
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#include "G4ios.hh"
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#include "G4Track.hh"
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#ifdef WITH_G4OPTICKS
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# include "G4Opticks.hh"
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# include "TrackInfo.hh"
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# include "OpticksGenstep.h"
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# include "OpticksFlags.hh"
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# include "G4OpticksHit.hh"
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# include "G4Cerenkov.hh"
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# include "G4Event.hh"
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# include "G4MaterialPropertiesTable.hh"
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# include "G4PhysicalConstants.hh"
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# include "G4RunManager.hh"
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# include "G4SteppingManager.hh"
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# include "G4SystemOfUnits.hh"
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# include "G4UnitsTable.hh"
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# include "G4VProcess.hh"
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# include "G4VRestDiscreteProcess.hh"
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# include "PhotonSD.hh"
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# include "G4Cerenkov.hh"
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# include "G4Scintillation.hh"
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# include "G4Version.hh"
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#endif
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// project headers
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#include "lArTPCSD.hh"
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#include "ConfigurationManager.hh"
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lArTPCSD::lArTPCSD(G4String name)
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: G4VSensitiveDetector(name)
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{
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G4String HCname = name + "_HC";
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collectionName.insert(HCname);
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verbose = ConfigurationManager::getInstance()->isEnable_verbose();
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if(verbose)
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{
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G4cout << collectionName.size() << " lArTPCSD name: " << name
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<< " collection Name: " << HCname << G4endl;
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}
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fHCID = -1;
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first = true;
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}
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void lArTPCSD::Initialize(G4HCofThisEvent* hce)
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{
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flArTPCHitsCollection =
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new lArTPCHitsCollection(SensitiveDetectorName, collectionName[0]);
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if(fHCID < 0)
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{
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if(verbose)
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{
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G4cout << "lArTPCSD::Initialize: " << SensitiveDetectorName << " "
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<< collectionName[0] << G4endl;
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}
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fHCID = G4SDManager::GetSDMpointer()->GetCollectionID(collectionName[0]);
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}
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hce->AddHitsCollection(fHCID, flArTPCHitsCollection);
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}
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G4bool lArTPCSD::ProcessHits(G4Step* aStep, G4TouchableHistory*)
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{
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G4double edep = aStep->GetTotalEnergyDeposit();
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if(edep == 0.)
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return false;
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// only deal with charged particles
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G4Track* aTrack = aStep->GetTrack();
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G4double charge = aTrack->GetDynamicParticle()->GetCharge();
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if(charge == 0)
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return false;
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G4double ds = aStep->GetStepLength();
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lArTPCHit* newHit = new lArTPCHit(
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NumElectrons(edep, ds), aStep->GetPostStepPoint()->GetPosition().getX(),
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aStep->GetPostStepPoint()->GetPosition().getY(),
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aStep->GetPostStepPoint()->GetPosition().getZ());
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flArTPCHitsCollection->insert(newHit);
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#ifdef WITH_G4OPTICKS
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if(ConfigurationManager::getInstance()->isEnable_opticks())
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{
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if(first)
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{
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aMaterial = aTrack->GetMaterial();
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materialIndex = aMaterial->GetIndex();
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if(verbose)
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{
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G4cout << "*******************************" << G4endl;
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G4cout << "RadiatorSD::ProcessHits initializing Material: "
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<< aMaterial->GetName() << " " << G4endl;
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G4cout << "RadiatorSD::ProcessHits: Name "
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<< aStep->GetPreStepPoint()
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->GetPhysicalVolume()
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->GetLogicalVolume()
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->GetName()
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<< G4endl;
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}
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aMaterialPropertiesTable = aMaterial->GetMaterialPropertiesTable();
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if(verbose)
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{
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aMaterialPropertiesTable->DumpTable();
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}
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//
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// properties related to Scintillation
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//
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# if(G4VERSION_NUMBER > 1072)
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YieldRatio =
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aMaterialPropertiesTable->GetConstProperty(kSCINTILLATIONYIELD1) /
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aMaterialPropertiesTable->GetConstProperty(
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kSCINTILLATIONYIELD2); // slowerRatio,
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FastTimeConstant = aMaterialPropertiesTable->GetConstProperty(
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kSCINTILLATIONTIMECONSTANT1); // TimeConstant,
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SlowTimeConstant = aMaterialPropertiesTable->GetConstProperty(
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kSCINTILLATIONTIMECONSTANT2); // slowerTimeConstant,
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# else
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Fast_Intensity = aMaterialPropertiesTable->GetProperty(kFASTCOMPONENT);
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Slow_Intensity = aMaterialPropertiesTable->GetProperty(kSLOWCOMPONENT);
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YieldRatio = aMaterialPropertiesTable->GetConstProperty(kYIELDRATIO);
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# endif
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ScintillationType = Slow;
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//
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// properties related to Cerenkov
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//
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Rindex = aMaterialPropertiesTable->GetProperty("RINDEX");
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# if(G4VERSION_NUMBER > 1072)
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Pmin = Rindex->GetMinEnergy();
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Pmax = Rindex->GetMaxEnergy();
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# else
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Pmin = Rindex->GetMinLowEdgeEnergy();
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Pmax = Rindex->GetMaxLowEdgeEnergy();
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# endif
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dp = Pmax - Pmin;
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if(verbose)
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{
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G4cout << "nMax: " << nMax << "Pmin: " << Pmin << "Pmax: " << Pmax
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<< "dp: " << dp << G4endl;
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Rindex->DumpValues();
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}
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//
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first = false;
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}
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G4int Sphotons = 0; // number of scintillation photons this step
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G4int Cphotons = 0; // number of Cerenkov photons this step
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//
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// info needed for generating Cerenkov photons on the GPU;
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//
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G4double maxCos = 0.0;
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G4double maxSin2 = 0.0;
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G4double beta = 0.0;
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G4double beta1 = 0.0;
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G4double beta2 = 0.0;
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G4double BetaInverse = 0.0;
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G4double MeanNumberOfPhotons1 = 0.0;
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G4double MeanNumberOfPhotons2 = 0.0;
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G4SteppingManager* fpSteppingManager = G4EventManager::GetEventManager()
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->GetTrackingManager()
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->GetSteppingManager();
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G4StepStatus stepStatus = fpSteppingManager->GetfStepStatus();
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if(stepStatus != fAtRestDoItProc)
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{
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G4ProcessVector* procPost = fpSteppingManager->GetfPostStepDoItVector();
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size_t MAXofPostStepLoops = fpSteppingManager->GetMAXofPostStepLoops();
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for(size_t i3 = 0; i3 < MAXofPostStepLoops; i3++)
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{
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if((*procPost)[i3]->GetProcessName() == "Cerenkov")
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{
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G4Cerenkov* proc = (G4Cerenkov*) (*procPost)[i3];
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thePhysicsTable = proc->GetPhysicsTable();
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CerenkovAngleIntegrals =
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(G4PhysicsOrderedFreeVector*) ((*thePhysicsTable)(materialIndex));
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Cphotons = proc->GetNumPhotons();
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if(Cphotons > 0)
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{
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beta1 = aStep->GetPreStepPoint()->GetBeta();
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beta2 = aStep->GetPostStepPoint()->GetBeta();
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beta = (beta1 + beta2) * 0.5;
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BetaInverse = 1. / beta;
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maxCos = BetaInverse / nMax;
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maxSin2 = (1.0 - maxCos) * (1.0 + maxCos);
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MeanNumberOfPhotons1 =
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proc->GetAverageNumberOfPhotons(charge, beta1, aMaterial, Rindex);
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MeanNumberOfPhotons2 =
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proc->GetAverageNumberOfPhotons(charge, beta2, aMaterial, Rindex);
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}
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}
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if((*procPost)[i3]->GetProcessName() == "Scintillation")
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{
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G4Scintillation* proc1 = (G4Scintillation*) (*procPost)[i3];
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Sphotons = proc1->GetNumPhotons();
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}
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}
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}
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tSphotons += Sphotons;
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tCphotons += Cphotons;
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G4ThreeVector deltaPosition = aStep->GetDeltaPosition();
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G4double ScintillationTime = 0. * ns;
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G4int scntId = 1;
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G4StepPoint* pPreStepPoint = aStep->GetPreStepPoint();
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G4ThreeVector x0 = pPreStepPoint->GetPosition();
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G4ThreeVector p0 = aStep->GetDeltaPosition().unit();
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//
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// harvest the Scintillation photon gensteps:
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//
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if(Sphotons > 0)
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{
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G4double ScintillationRiseTime = 0.0;
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G4Opticks::Get()->collectGenstep_G4Scintillation_1042(
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aTrack, aStep, Sphotons, scntId, ScintillationTime,
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ScintillationRiseTime);
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}
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//
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// harvest the Cerenkov photon gensteps:
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//
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if(Cphotons > 0)
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{
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G4Opticks::Get()->collectGenstep_G4Cerenkov_1042(
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aTrack, aStep, Cphotons, BetaInverse, Pmin, Pmax, maxCos, maxSin2,
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MeanNumberOfPhotons1, MeanNumberOfPhotons2);
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}
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G4Opticks* g4ok = G4Opticks::Get();
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G4RunManager* rm = G4RunManager::GetRunManager();
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const G4Event* event = rm->GetCurrentEvent();
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G4int eventid = event->GetEventID();
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G4OpticksHit hit;
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unsigned num_photons = g4ok->getNumPhotons();
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if(num_photons > ConfigurationManager::getInstance()->getMaxPhotons())
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{
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g4ok->propagateOpticalPhotons(eventid);
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G4HCtable* hctable = G4SDManager::GetSDMpointer()->GetHCtable();
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for(G4int i = 0; i < hctable->entries(); ++i)
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{
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std::string sdn = hctable->GetSDname(i);
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std::size_t found = sdn.find("Photondetector");
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if(found != std::string::npos)
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{
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PhotonSD* aSD =
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(PhotonSD*) G4SDManager::GetSDMpointer()->FindSensitiveDetector(
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sdn);
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aSD->AddOpticksHits();
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}
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}
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g4ok->reset();
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}
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}
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#endif
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return true;
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}
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void lArTPCSD::EndOfEvent(G4HCofThisEvent*)
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{
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tSphotons = 0;
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tCphotons = 0;
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G4int NbHits = flArTPCHitsCollection->entries();
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if(verbose)
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{
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G4cout << " Number of lArTPCHits: " << NbHits << G4endl;
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}
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}
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G4double lArTPCSD::NumElectrons(G4double edep, G4double ds)
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{
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// Nucl.Instrum.Meth.A523:275-286,2004
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G4double fGeVToElectrons = 4.237e+07;
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G4double fModBoxA = 0.930;
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G4double fModBoxB = 0.212;
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G4double EFieldStep = 0.5;
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G4double recomb = 0.0;
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G4double dEdx = (ds <= 0.0) ? 0.0 : edep / ds;
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if(dEdx < 1.)
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dEdx = 1.;
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if(ds > 0)
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{
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G4double Xi = fModBoxB * dEdx / EFieldStep;
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recomb = std::log(fModBoxA + Xi) / Xi;
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}
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else
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{
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recomb = 0.0;
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}
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G4double fNumIonElectrons = fGeVToElectrons * 1.e-3 * edep * recomb;
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return fNumIonElectrons;
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}
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