Gabriele Cosmo
252 lines
8.8 KiB
C++
252 lines
8.8 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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/// \file Par01/src/Par01PionShowerModel.cc
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/// \brief Implementation of the Par01PionShowerModel class
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//
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//
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// $Id: Par01PionShowerModel.cc 101151 2016-11-08 08:06:16Z gcosmo $
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//
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#include "Par01PionShowerModel.hh"
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#include "Par01EnergySpot.hh"
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#include "Randomize.hh"
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#include "G4PionMinus.hh"
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#include "G4PionPlus.hh"
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#include "G4TransportationManager.hh"
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#include "G4VSensitiveDetector.hh"
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#include "G4TouchableHistory.hh"
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#include "G4Colour.hh"
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#include "G4PhysicalConstants.hh"
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#include "G4SystemOfUnits.hh"
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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Par01PionShowerModel::Par01PionShowerModel(G4String modelName, G4Region* envelope)
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: G4VFastSimulationModel(modelName, envelope)
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{
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fFakeStep = new G4Step();
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fFakePreStepPoint = fFakeStep->GetPreStepPoint();
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fFakePostStepPoint = fFakeStep->GetPostStepPoint();
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fTouchableHandle = new G4TouchableHistory();
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fpNavigator = new G4Navigator();
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fNaviSetup = false;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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Par01PionShowerModel::Par01PionShowerModel(G4String modelName)
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: G4VFastSimulationModel(modelName)
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{
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fFakeStep = new G4Step();
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fFakePreStepPoint = fFakeStep->GetPreStepPoint();
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fFakePostStepPoint = fFakeStep->GetPostStepPoint();
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fTouchableHandle = new G4TouchableHistory();
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fpNavigator = new G4Navigator();
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fNaviSetup = false;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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Par01PionShowerModel::~Par01PionShowerModel()
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{
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delete fFakeStep;
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delete fpNavigator;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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G4bool Par01PionShowerModel::IsApplicable(const G4ParticleDefinition& particleType)
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{
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return
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&particleType == G4PionMinus::PionMinusDefinition() ||
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&particleType == G4PionPlus::PionPlusDefinition();
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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G4bool Par01PionShowerModel::ModelTrigger(const G4FastTrack&)
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{
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// Applies the parameterisation always:
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// ie as soon as the pion enters the envelope
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return true;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void Par01PionShowerModel::DoIt(const G4FastTrack& fastTrack,
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G4FastStep& fastStep)
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{
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// G4cout << "Par01PionShowerModel::DoIt" << G4endl;
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// Kill the parameterised particle:
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fastStep.KillPrimaryTrack();
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fastStep.ProposePrimaryTrackPathLength(0.0);
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fastStep.ProposeTotalEnergyDeposited(fastTrack.GetPrimaryTrack()->GetKineticEnergy());
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// split into "energy spots" energy according to the shower shape:
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Explode(fastTrack);
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// and put those energy spots into the crystals:
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BuildDetectorResponse();
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void Par01PionShowerModel::Explode(const G4FastTrack& fastTrack)
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{
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//-----------------------------------------------------
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// Non-physical shower generated: exp along z and
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// transverse.
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//-----------------------------------------------------
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// center of the shower, we put at the middle of the ghost:
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G4ThreeVector showerCenter;
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G4double distOut;
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distOut = fastTrack.GetEnvelopeSolid()->
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DistanceToOut(fastTrack.GetPrimaryTrackLocalPosition(),
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fastTrack.GetPrimaryTrackLocalDirection());
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showerCenter = fastTrack.GetPrimaryTrackLocalPosition() +
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(distOut/2.)*fastTrack.GetPrimaryTrackLocalDirection();
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showerCenter = fastTrack.GetInverseAffineTransformation()->
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TransformPoint(showerCenter);
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// axis of the shower, in global reference frame:
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G4ThreeVector xShower, yShower, zShower;
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zShower = fastTrack.GetPrimaryTrack()->GetMomentumDirection();
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xShower = zShower.orthogonal();
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yShower = zShower.cross(xShower);
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// shoot the energy spots:
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G4double Energy = fastTrack.GetPrimaryTrack()->GetKineticEnergy();
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G4int nSpot = 50;
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G4double deposit = Energy/double(nSpot);
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Par01EnergySpot eSpot;
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eSpot.SetEnergy(deposit);
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G4ThreeVector ePoint;
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// clear the spot list before use
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feSpotList.clear();
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G4double z, r, phi;
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for (int i = 0; i < nSpot; i++)
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{
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z = G4RandGauss::shoot(0,20*cm);
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r = G4RandGauss::shoot(0,10*cm);
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phi = G4UniformRand()*twopi;
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ePoint = showerCenter +
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z*zShower +
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r*std::cos(phi)*xShower + r*std::sin(phi)*yShower;
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eSpot.SetPosition(ePoint);
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feSpotList.push_back(eSpot);
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}
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void Par01PionShowerModel::BuildDetectorResponse()
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{
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// Does the assignation of the energy spots to the sensitive volumes:
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for (size_t i = 0; i < feSpotList.size(); i++)
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{
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// Draw the energy spot:
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// G4Colour red(1.,0.,0.);
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// feSpotList[i].Draw(&red);
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// feSpotList[i].Print();
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// "converts" the energy spot into the fake
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// G4Step to pass to sensitive detector:
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AssignSpotAndCallHit(feSpotList[i]);
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}
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void Par01PionShowerModel::AssignSpotAndCallHit(const Par01EnergySpot &eSpot)
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{
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//
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// "converts" the energy spot into the fake
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// G4Step to pass to sensitive detector:
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//
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FillFakeStep(eSpot);
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//
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// call sensitive part: taken/adapted from the stepping:
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// Send G4Step information to Hit/Dig if the volume is sensitive
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//
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G4VPhysicalVolume* pCurrentVolume =
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fFakeStep->GetPreStepPoint()->GetPhysicalVolume();
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G4VSensitiveDetector* pSensitive;
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if( pCurrentVolume != 0 )
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{
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pSensitive = pCurrentVolume->GetLogicalVolume()->
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GetSensitiveDetector();
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if( pSensitive != 0 )
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{
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pSensitive->Hit(fFakeStep);
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}
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}
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void Par01PionShowerModel::FillFakeStep(const Par01EnergySpot &eSpot)
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{
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//-----------------------------------------------------------
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// find in which volume the spot is.
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//-----------------------------------------------------------
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if (!fNaviSetup)
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{
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fpNavigator->
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SetWorldVolume(G4TransportationManager::GetTransportationManager()->
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GetNavigatorForTracking()->GetWorldVolume());
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fpNavigator->
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LocateGlobalPointAndUpdateTouchableHandle(eSpot.GetPosition(),
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G4ThreeVector(0.,0.,0.),
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fTouchableHandle,
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false);
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fNaviSetup = true;
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}
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else
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{
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fpNavigator->
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LocateGlobalPointAndUpdateTouchableHandle(eSpot.GetPosition(),
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G4ThreeVector(0.,0.,0.),
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fTouchableHandle);
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}
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//--------------------------------------
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// Fills attribute of the G4Step needed
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// by our sensitive detector:
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//-------------------------------------
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// set touchable volume at PreStepPoint:
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fFakePreStepPoint->SetTouchableHandle(fTouchableHandle);
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// set total energy deposit:
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fFakeStep->SetTotalEnergyDeposit(eSpot.GetEnergy());
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}
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