Back to home page

EIC code displayed by LXR
 
 

    

File indexing completed on 2025-01-31 09:21:47 

0001 //
0002 // ********************************************************************
0003 // * License and Disclaimer                                           *
0004 // *                                                                  *
0005 // * The  Geant4 software  is  copyright of the Copyright Holders  of *
0006 // * the Geant4 Collaboration.  It is provided  under  the terms  and *
0007 // * conditions of the Geant4 Software License,  included in the file *
0008 // * LICENSE and available at  http://cern.ch/geant4/license .  These *
0009 // * include a list of copyright holders.                             *
0010 // *                                                                  *
0011 // * Neither the authors of this software system, nor their employing *
0012 // * institutes,nor the agencies providing financial support for this *
0013 // * work  make  any representation or  warranty, express or implied, *
0014 // * regarding  this  software system or assume any liability for its *
0015 // * use.  Please see the license in the file  LICENSE  and URL above *
0016 // * for the full disclaimer and the limitation of liability.         *
0017 // *                                                                  *
0018 // * This  code  implementation is the result of  the  scientific and *
0019 // * technical work of the GEANT4 collaboration.                      *
0020 // * By using,  copying,  modifying or  distributing the software (or *
0021 // * any work based  on the software)  you  agree  to acknowledge its *
0022 // * use  in  resulting  scientific  publications,  and indicate your *
0023 // * acceptance of all terms of the Geant4 Software license.          *
0024 // ********************************************************************
0025 //
0026 // ********************************************************************
0027 //
0028 //  CaTS (Calorimetry and Tracking Simulation)
0029 //
0030 //  Authors : Hans Wenzel
0031 //            Soon Yung Jun
0032 //            (Fermi National Accelerator Laboratory)
0033 //
0034 // History
0035 //   October 18th, 2021 : first implementation
0036 //
0037 // ********************************************************************
0038 //
0039 /// \file lArTPCSD.cc
0040 /// \brief Implementation of the CaTS::lArTPCSD class
0041 
0042 // Geant4 headers 
0043 #include "G4HCofThisEvent.hh"
0044 #include "G4Step.hh"
0045 #include "G4ThreeVector.hh"
0046 #include "G4SDManager.hh"
0047 #include "G4ios.hh"
0048 #include "G4Track.hh"
0049 #ifdef WITH_G4OPTICKS
0050 #  include "G4Opticks.hh"
0051 #  include "TrackInfo.hh"
0052 #  include "OpticksGenstep.h"
0053 #  include "OpticksFlags.hh"
0054 #  include "G4OpticksHit.hh"
0055 #  include "G4Cerenkov.hh"
0056 #  include "G4Event.hh"
0057 #  include "G4MaterialPropertiesTable.hh"
0058 #  include "G4PhysicalConstants.hh"
0059 #  include "G4RunManager.hh"
0060 #  include "G4SteppingManager.hh"
0061 #  include "G4SystemOfUnits.hh"
0062 #  include "G4UnitsTable.hh"
0063 #  include "G4VProcess.hh"
0064 #  include "G4VRestDiscreteProcess.hh"
0065 #  include "PhotonSD.hh"
0066 #  include "G4Cerenkov.hh"
0067 #  include "G4Scintillation.hh"
0068 #  include "G4Version.hh"
0069 #endif
0070 // project headers
0071 #include "lArTPCSD.hh"
0072 #include "ConfigurationManager.hh"
0073 
0074 lArTPCSD::lArTPCSD(G4String name)
0075   : G4VSensitiveDetector(name)
0076 {
0077   G4String HCname = name + "_HC";
0078   collectionName.insert(HCname);
0079   verbose = ConfigurationManager::getInstance()->isEnable_verbose();
0080   if(verbose)
0081   {
0082     G4cout << collectionName.size() << "   lArTPCSD name:  " << name
0083            << " collection Name: " << HCname << G4endl;
0084   }
0085   fHCID = -1;
0086   first = true;
0087 }
0088 
0089 void lArTPCSD::Initialize(G4HCofThisEvent* hce)
0090 {
0091   flArTPCHitsCollection =
0092     new lArTPCHitsCollection(SensitiveDetectorName, collectionName[0]);
0093   if(fHCID < 0)
0094   {
0095     if(verbose)
0096     {
0097       G4cout << "lArTPCSD::Initialize:  " << SensitiveDetectorName << "   "
0098              << collectionName[0] << G4endl;
0099     }
0100     fHCID = G4SDManager::GetSDMpointer()->GetCollectionID(collectionName[0]);
0101   }
0102   hce->AddHitsCollection(fHCID, flArTPCHitsCollection);
0103 }
0104 
0105 G4bool lArTPCSD::ProcessHits(G4Step* aStep, G4TouchableHistory*)
0106 {
0107   G4double edep = aStep->GetTotalEnergyDeposit();
0108   if(edep == 0.)
0109     return false;
0110   // only deal with charged particles
0111   G4Track* aTrack = aStep->GetTrack();
0112   G4double charge = aTrack->GetDynamicParticle()->GetCharge();
0113   if(charge == 0)
0114     return false;
0115   G4double ds       = aStep->GetStepLength();
0116   lArTPCHit* newHit = new lArTPCHit(
0117     NumElectrons(edep, ds), aStep->GetPostStepPoint()->GetPosition().getX(),
0118     aStep->GetPostStepPoint()->GetPosition().getY(),
0119     aStep->GetPostStepPoint()->GetPosition().getZ());
0120   flArTPCHitsCollection->insert(newHit);
0121 #ifdef WITH_G4OPTICKS
0122   if(ConfigurationManager::getInstance()->isEnable_opticks())
0123   {
0124     if(first)
0125     {
0126       aMaterial     = aTrack->GetMaterial();
0127       materialIndex = aMaterial->GetIndex();
0128       if(verbose)
0129       {
0130         G4cout << "*******************************" << G4endl;
0131         G4cout << "RadiatorSD::ProcessHits initializing Material:  "
0132                << aMaterial->GetName() << " " << G4endl;
0133         G4cout << "RadiatorSD::ProcessHits: Name "
0134                << aStep->GetPreStepPoint()
0135                     ->GetPhysicalVolume()
0136                     ->GetLogicalVolume()
0137                     ->GetName()
0138                << G4endl;
0139       }
0140       aMaterialPropertiesTable = aMaterial->GetMaterialPropertiesTable();
0141       if(verbose)
0142       {
0143         aMaterialPropertiesTable->DumpTable();
0144       }
0145       //
0146       // properties related to Scintillation
0147       //
0148 #  if(G4VERSION_NUMBER > 1072)
0149       YieldRatio =
0150         aMaterialPropertiesTable->GetConstProperty(kSCINTILLATIONYIELD1) /
0151         aMaterialPropertiesTable->GetConstProperty(
0152           kSCINTILLATIONYIELD2);  // slowerRatio,
0153       FastTimeConstant = aMaterialPropertiesTable->GetConstProperty(
0154         kSCINTILLATIONTIMECONSTANT1);  // TimeConstant,
0155       SlowTimeConstant = aMaterialPropertiesTable->GetConstProperty(
0156         kSCINTILLATIONTIMECONSTANT2);  // slowerTimeConstant,
0157 #  else
0158       Fast_Intensity = aMaterialPropertiesTable->GetProperty(kFASTCOMPONENT);
0159       Slow_Intensity = aMaterialPropertiesTable->GetProperty(kSLOWCOMPONENT);
0160       YieldRatio     = aMaterialPropertiesTable->GetConstProperty(kYIELDRATIO);
0161 #  endif
0162       ScintillationType = Slow;
0163       //
0164       // properties related to Cerenkov
0165       //
0166       Rindex = aMaterialPropertiesTable->GetProperty("RINDEX");
0167 #  if(G4VERSION_NUMBER > 1072)
0168       Pmin = Rindex->GetMinEnergy();
0169       Pmax = Rindex->GetMaxEnergy();
0170 #  else
0171       Pmin           = Rindex->GetMinLowEdgeEnergy();
0172       Pmax           = Rindex->GetMaxLowEdgeEnergy();
0173 #  endif
0174       dp = Pmax - Pmin;
0175       if(verbose)
0176       {
0177         G4cout << "nMax: " << nMax << "Pmin: " << Pmin << "Pmax: " << Pmax
0178                << "dp: " << dp << G4endl;
0179         Rindex->DumpValues();
0180       }
0181       //
0182       first = false;
0183     }
0184     G4int Sphotons = 0;  // number of scintillation photons this step
0185     G4int Cphotons = 0;  // number of Cerenkov photons this step
0186     //
0187     // info needed for generating Cerenkov photons on the GPU;
0188     //
0189     G4double maxCos                      = 0.0;
0190     G4double maxSin2                     = 0.0;
0191     G4double beta                        = 0.0;
0192     G4double beta1                       = 0.0;
0193     G4double beta2                       = 0.0;
0194     G4double BetaInverse                 = 0.0;
0195     G4double MeanNumberOfPhotons1        = 0.0;
0196     G4double MeanNumberOfPhotons2        = 0.0;
0197     G4SteppingManager* fpSteppingManager = G4EventManager::GetEventManager()
0198                                              ->GetTrackingManager()
0199                                              ->GetSteppingManager();
0200     G4StepStatus stepStatus = fpSteppingManager->GetfStepStatus();
0201     if(stepStatus != fAtRestDoItProc)
0202     {
0203       G4ProcessVector* procPost = fpSteppingManager->GetfPostStepDoItVector();
0204       size_t MAXofPostStepLoops = fpSteppingManager->GetMAXofPostStepLoops();
0205       for(size_t i3 = 0; i3 < MAXofPostStepLoops; i3++)
0206       {
0207         if((*procPost)[i3]->GetProcessName() == "Cerenkov")
0208         {
0209           G4Cerenkov* proc = (G4Cerenkov*) (*procPost)[i3];
0210           thePhysicsTable  = proc->GetPhysicsTable();
0211           CerenkovAngleIntegrals =
0212             (G4PhysicsOrderedFreeVector*) ((*thePhysicsTable)(materialIndex));
0213           Cphotons = proc->GetNumPhotons();
0214           if(Cphotons > 0)
0215           {
0216             beta1       = aStep->GetPreStepPoint()->GetBeta();
0217             beta2       = aStep->GetPostStepPoint()->GetBeta();
0218             beta        = (beta1 + beta2) * 0.5;
0219             BetaInverse = 1. / beta;
0220             maxCos      = BetaInverse / nMax;
0221             maxSin2     = (1.0 - maxCos) * (1.0 + maxCos);
0222             MeanNumberOfPhotons1 =
0223               proc->GetAverageNumberOfPhotons(charge, beta1, aMaterial, Rindex);
0224             MeanNumberOfPhotons2 =
0225               proc->GetAverageNumberOfPhotons(charge, beta2, aMaterial, Rindex);
0226           }
0227         }
0228         if((*procPost)[i3]->GetProcessName() == "Scintillation")
0229         {
0230           G4Scintillation* proc1 = (G4Scintillation*) (*procPost)[i3];
0231           Sphotons               = proc1->GetNumPhotons();
0232         }
0233       }
0234     }
0235     tSphotons += Sphotons;
0236     tCphotons += Cphotons;
0237     G4ThreeVector deltaPosition = aStep->GetDeltaPosition();
0238     G4double ScintillationTime  = 0. * ns;
0239     G4int scntId                = 1;
0240     G4StepPoint* pPreStepPoint  = aStep->GetPreStepPoint();
0241     G4ThreeVector x0            = pPreStepPoint->GetPosition();
0242     G4ThreeVector p0            = aStep->GetDeltaPosition().unit();
0243     //
0244     // harvest the Scintillation photon gensteps:
0245     //
0246     if(Sphotons > 0)
0247     {
0248       G4double ScintillationRiseTime = 0.0;
0249       G4Opticks::Get()->collectGenstep_G4Scintillation_1042(
0250         aTrack, aStep, Sphotons, scntId, ScintillationTime,
0251         ScintillationRiseTime);
0252     }
0253     //
0254     // harvest the Cerenkov photon gensteps:
0255     //
0256     if(Cphotons > 0)
0257     {
0258       G4Opticks::Get()->collectGenstep_G4Cerenkov_1042(
0259         aTrack, aStep, Cphotons, BetaInverse, Pmin, Pmax, maxCos, maxSin2,
0260         MeanNumberOfPhotons1, MeanNumberOfPhotons2);
0261     }
0262     G4Opticks* g4ok      = G4Opticks::Get();
0263     G4RunManager* rm     = G4RunManager::GetRunManager();
0264     const G4Event* event = rm->GetCurrentEvent();
0265     G4int eventid        = event->GetEventID();
0266     G4OpticksHit hit;
0267     unsigned num_photons = g4ok->getNumPhotons();
0268     if(num_photons > ConfigurationManager::getInstance()->getMaxPhotons())
0269     {
0270       g4ok->propagateOpticalPhotons(eventid);
0271       G4HCtable* hctable = G4SDManager::GetSDMpointer()->GetHCtable();
0272       for(G4int i = 0; i < hctable->entries(); ++i)
0273       {
0274         std::string sdn   = hctable->GetSDname(i);
0275         std::size_t found = sdn.find("Photondetector");
0276         if(found != std::string::npos)
0277         {
0278           PhotonSD* aSD =
0279             (PhotonSD*) G4SDManager::GetSDMpointer()->FindSensitiveDetector(
0280               sdn);
0281           aSD->AddOpticksHits();
0282         }
0283       }
0284       g4ok->reset();
0285     }
0286   }
0287 #endif
0288   return true;
0289 }
0290 
0291 void lArTPCSD::EndOfEvent(G4HCofThisEvent*)
0292 {
0293   tSphotons    = 0;
0294   tCphotons    = 0;
0295   G4int NbHits = flArTPCHitsCollection->entries();
0296   if(verbose)
0297   {
0298     G4cout << " Number of lArTPCHits:  " << NbHits << G4endl;
0299   }
0300 }
0301 
0302 G4double lArTPCSD::NumElectrons(G4double edep, G4double ds)
0303 {
0304   // Nucl.Instrum.Meth.A523:275-286,2004
0305   G4double fGeVToElectrons = 4.237e+07;
0306   G4double fModBoxA        = 0.930;
0307   G4double fModBoxB        = 0.212;
0308   G4double EFieldStep      = 0.5;
0309   G4double recomb          = 0.0;
0310   G4double dEdx            = (ds <= 0.0) ? 0.0 : edep / ds;
0311   if(dEdx < 1.)
0312     dEdx = 1.;
0313   if(ds > 0)
0314   {
0315     G4double Xi = fModBoxB * dEdx / EFieldStep;
0316     recomb      = std::log(fModBoxA + Xi) / Xi;
0317   }
0318   else
0319   {
0320     recomb = 0.0;
0321   }
0322   G4double fNumIonElectrons = fGeVToElectrons * 1.e-3 * edep * recomb;
0323   return fNumIonElectrons;
0324 }
[ Source navigation ] [ Diff markup ] [ Identifier search ] [ general search ]

This page was automatically generated by the 2.3.7 LXR engine.

The LXR team
Valid CSS 2.1! Valid HTML 4.01!