Gabriele Cosmo
207 lines
7.9 KiB
C++
207 lines
7.9 KiB
C++
//
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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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#include "Par04SensitiveDetector.hh"
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#include <CLHEP/Vector/Rotation.h> // for HepRotation
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#include <CLHEP/Vector/ThreeVector.h> // for Hep3Vector
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#include <cmath> // for floor
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#include <G4CollectionNameVector.hh> // for G4CollectionNameVector
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#include <G4FastHit.hh> // for G4FastHit
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#include <G4FastTrack.hh> // for G4FastTrack
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#include <G4RotationMatrix.hh> // for G4RotationMatrix
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#include <G4StepPoint.hh> // for G4StepPoint
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#include <G4THitsCollection.hh> // for G4THitsCollection
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#include <G4ThreeVector.hh> // for G4ThreeVector
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#include <G4VSensitiveDetector.hh> // for G4VSensitiveDetector
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#include <G4VUserEventInformation.hh> // for G4VUserEventInformation
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#include <cstddef> // for size_t
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#include <vector> // for vector
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#include "G4Event.hh" // for G4Event
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#include "G4EventManager.hh" // for G4EventManager
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#include "G4HCofThisEvent.hh" // for G4HCofThisEvent
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#include "G4SDManager.hh" // for G4SDManager
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#include "G4Step.hh" // for G4Step
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#include "G4Track.hh" // for G4Track
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#include "Par04EventInformation.hh" // for Par04EventInformation
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#include "Par04Hit.hh" // for Par04Hit, Par04HitsCollection
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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Par04SensitiveDetector::Par04SensitiveDetector(G4String aName)
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: G4VSensitiveDetector(aName)
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{
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collectionName.insert("hits");
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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Par04SensitiveDetector::Par04SensitiveDetector(G4String aName, G4ThreeVector aNb,
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G4ThreeVector aSize)
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: G4VSensitiveDetector(aName)
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, fMeshNbOfCells(aNb)
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, fMeshSizeOfCells(aSize)
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{
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collectionName.insert("hits");
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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Par04SensitiveDetector::~Par04SensitiveDetector() {}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void Par04SensitiveDetector::Initialize(G4HCofThisEvent* aHCE)
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{
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fHitsCollection = new Par04HitsCollection(SensitiveDetectorName, collectionName[0]);
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if(fHitCollectionID < 0)
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{
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fHitCollectionID = G4SDManager::GetSDMpointer()->GetCollectionID(fHitsCollection);
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}
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aHCE->AddHitsCollection(fHitCollectionID, fHitsCollection);
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// fill calorimeter hits with zero energy deposition
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for(G4int iphi = 0; iphi < fMeshNbOfCells.y(); iphi++)
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for(G4int irho = 0; irho < fMeshNbOfCells.x(); irho++)
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for(G4int iz = 0; iz < fMeshNbOfCells.z(); iz++)
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{
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Par04Hit* hit = new Par04Hit();
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fHitsCollection->insert(hit);
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}
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// reset entrance position
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fEntrancePosition.set(-1, -1, -1);
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fEntranceDirection.set(-1, -1, -1);
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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G4bool Par04SensitiveDetector::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 true;
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auto hit = RetrieveAndSetupHit(aStep->GetPostStepPoint()->GetPosition());
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if(hit == nullptr)
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return true;
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// Add energy deposit from G4Step
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hit->AddEdep(edep);
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// Fill time information from G4Step
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// If it's already filled, choose hit with earliest global time
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if(hit->GetTime() == -1 || hit->GetTime() > aStep->GetTrack()->GetGlobalTime())
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hit->SetTime(aStep->GetTrack()->GetGlobalTime());
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// Set hit type to full simulation (only if hit is not already marked as fast
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// sim)
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if(hit->GetType() != 1)
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hit->SetType(0);
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return true;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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G4bool Par04SensitiveDetector::ProcessHits(const G4FastHit* aHit, const G4FastTrack* aTrack,
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G4TouchableHistory*)
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{
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G4double edep = aHit->GetEnergy();
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if(edep == 0.)
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return true;
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auto hit = RetrieveAndSetupHit(aHit->GetPosition());
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if(hit == nullptr)
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return true;
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// Add energy deposit from G4FastHit
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hit->AddEdep(edep);
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// Fill time information from G4FastTrack
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// If it's already filled, choose hit with earliest global time
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if(hit->GetTime() == -1 || hit->GetTime() > aTrack->GetPrimaryTrack()->GetGlobalTime())
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{
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hit->SetTime(aTrack->GetPrimaryTrack()->GetGlobalTime());
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}
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// Set hit type to fast simulation (even if hit was already marked as full
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// sim, overwrite it)
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hit->SetType(1);
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return true;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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Par04Hit* Par04SensitiveDetector::RetrieveAndSetupHit(G4ThreeVector aGlobalPosition)
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{
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if(fEntrancePosition.x() == -1)
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{
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Par04EventInformation* info = dynamic_cast<Par04EventInformation*>(
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G4EventManager::GetEventManager()->GetConstCurrentEvent()->GetUserInformation());
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if(info == nullptr)
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return nullptr;
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fEntrancePosition = info->GetPosition();
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fEntranceDirection = info->GetDirection();
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}
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auto delta = aGlobalPosition - fEntrancePosition;
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// Calculate rotation matrix along the particle momentum direction
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// It will rotate the shower axes to match the incoming particle direction
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G4RotationMatrix rotMatrix = G4RotationMatrix();
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double particleTheta = fEntranceDirection.theta();
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double particlePhi = fEntranceDirection.phi();
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rotMatrix.rotateZ(-particlePhi);
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rotMatrix.rotateY(-particleTheta);
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G4RotationMatrix rotMatrixInv = CLHEP::inverseOf(rotMatrix);
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delta = rotMatrix * delta;
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G4int rhoNo = std::floor(delta.perp() / fMeshSizeOfCells.x());
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G4int phiNo = std::floor((CLHEP::pi + delta.phi()) / fMeshSizeOfCells.y());
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G4int zNo = std::floor(delta.z() / fMeshSizeOfCells.z());
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std::size_t hitID =
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fMeshNbOfCells.x() * fMeshNbOfCells.z() * phiNo + fMeshNbOfCells.z() * rhoNo + zNo;
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if(hitID >= fHitsCollection->entries() || zNo > fMeshNbOfCells.z() ||
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rhoNo > fMeshNbOfCells.x() || zNo < 0)
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{
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return nullptr;
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}
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Par04Hit* hit = (*fHitsCollection)[hitID];
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if(hit->GetRhoId() < 0)
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{
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hit->SetRhoId(rhoNo);
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hit->SetPhiId(phiNo);
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hit->SetZid(zNo);
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hit->SetRot(rotMatrixInv);
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hit->SetPos(fEntrancePosition +
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rotMatrixInv * G4ThreeVector(0, 0, (zNo + 0.5) * fMeshSizeOfCells.z()));
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}
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return hit;
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}
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