Gabriele Cosmo
289 lines
10 KiB
C++
289 lines
10 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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////////////////////////////////////////////////////////////////////////
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// Scintillation Light Class Definition
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////////////////////////////////////////////////////////////////////////
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//
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// File: G4Scintillation.hh
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// Description: Discrete Process - Generation of Scintillation Photons
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// Version: 1.0
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// Created: 1998-11-07
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// Author: Peter Gumplinger
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// Updated: 2010-10-20 Allow the scintillation yield to be a function
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// of energy deposited by particle type
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// Thanks to Zach Hartwig (Department of Nuclear
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// Science and Engineeering - MIT)
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// 2005-07-28 add G4ProcessType to constructor
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// 2002-11-21 change to user G4Poisson for small MeanNumPotons
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// 2002-11-07 allow for fast and slow scintillation
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// 2002-11-05 make use of constant material properties
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// 2002-05-16 changed to inherit from VRestDiscreteProcess
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// 2002-05-09 changed IsApplicable method
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// 1999-10-29 add method and class descriptors
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//
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//
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////////////////////////////////////////////////////////////////////////
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#ifndef G4Scintillation_h
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#define G4Scintillation_h 1
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#include "globals.hh"
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#include "G4EmSaturation.hh"
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#include "G4OpticalPhoton.hh"
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#include "G4VRestDiscreteProcess.hh"
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class G4PhysicsTable;
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class G4Step;
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class G4Track;
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// Class Description:
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// RestDiscrete Process - Generation of Scintillation Photons.
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// Class inherits publicly from G4VRestDiscreteProcess.
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// Class Description - End:
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class G4Scintillation : public G4VRestDiscreteProcess
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{
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public:
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explicit G4Scintillation(const G4String& processName = "Scintillation",
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G4ProcessType type = fElectromagnetic);
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~G4Scintillation();
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G4Scintillation(const G4Scintillation& right) = delete;
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G4Scintillation& operator=(const G4Scintillation& right) = delete;
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// G4Scintillation Process has both PostStepDoIt (for energy
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// deposition of particles in flight) and AtRestDoIt (for energy
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// given to the medium by particles at rest)
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G4bool IsApplicable(const G4ParticleDefinition& aParticleType) override;
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// Returns true -> 'is applicable', for any particle type except
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// for an 'opticalphoton' and for short-lived particles
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void ProcessDescription(std::ostream&) const override;
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void DumpInfo() const override {ProcessDescription(G4cout);};
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void BuildPhysicsTable(const G4ParticleDefinition& aParticleType) override;
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// Build table at the right time
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void PreparePhysicsTable(const G4ParticleDefinition& part) override;
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void Initialise();
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G4double GetMeanFreePath(const G4Track& aTrack, G4double,
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G4ForceCondition*) override;
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// Returns infinity; i. e. the process does not limit the step,
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// but sets the 'StronglyForced' condition for the DoIt to be
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// invoked at every step.
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G4double GetMeanLifeTime(const G4Track& aTrack, G4ForceCondition*) override;
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// Returns infinity; i. e. the process does not limit the time,
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// but sets the 'StronglyForced' condition for the DoIt to be
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// invoked at every step.
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G4VParticleChange* PostStepDoIt(const G4Track& aTrack,
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const G4Step& aStep) override;
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G4VParticleChange* AtRestDoIt(const G4Track& aTrack,
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const G4Step& aStep) override;
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G4double GetScintillationYieldByParticleType(const G4Track& aTrack,
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const G4Step& aStep,
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G4double& yield1,
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G4double& yield2,
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G4double& yield3,
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G4double& timeconstant1,
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G4double& timeconstant2,
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G4double& timeconstant3);
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// allow multiple time constants with scint by particle type
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// Returns the number of scintillation photons calculated when
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// scintillation depends on the particle type and energy
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// deposited (includes nonlinear dependendency) and updates the
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// yields for each channel
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void SetTrackSecondariesFirst(const G4bool state);
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// If set, the primary particle tracking is interrupted and any
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// produced scintillation photons are tracked next. When all
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// have been tracked, the tracking of the primary resumes.
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G4bool GetTrackSecondariesFirst() const;
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// Returns the boolean flag for tracking secondaries first.
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void SetFiniteRiseTime(const G4bool state);
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// If set, the G4Scintillation process expects the user to have
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// set the constant material property SCINTILLATIONRISETIME{1,2,3}.
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G4bool GetFiniteRiseTime() const;
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// Returns the boolean flag for a finite scintillation rise time.
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G4PhysicsTable* GetIntegralTable1() const;
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// Returns the address of scintillation integral table #1.
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G4PhysicsTable* GetIntegralTable2() const;
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// Returns the address of scintillation integral table #2.
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G4PhysicsTable* GetIntegralTable3() const;
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// Returns the address of scintillation integral table #3.
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void AddSaturation(G4EmSaturation* sat);
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// Adds Birks Saturation to the process.
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void RemoveSaturation();
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// Removes the Birks Saturation from the process.
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G4EmSaturation* GetSaturation() const;
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// Returns the Birks Saturation.
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void SetScintillationByParticleType(const G4bool);
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// Called by the user to set the scintillation yield as a function
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// of energy deposited by particle type
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G4bool GetScintillationByParticleType() const;
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// Return the boolean that determines the method of scintillation
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// production
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void SetScintillationTrackInfo(const G4bool trackType);
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// Call by the user to set the G4ScintillationTrackInformation
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// to scintillation photon track
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G4bool GetScintillationTrackInfo() const;
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// Return the boolean for whether or not the
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// G4ScintillationTrackInformation is set to the scint. photon track
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void SetStackPhotons(const G4bool);
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// Call by the user to set the flag for stacking the scint. photons
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G4bool GetStackPhotons() const;
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// Return the boolean for whether or not the scint. photons are stacked
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G4int GetNumPhotons() const;
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// Returns the current number of scint. photons (after PostStepDoIt)
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void DumpPhysicsTable() const;
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// Prints the fast and slow scintillation integral tables.
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void SetVerboseLevel(G4int);
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// sets verbosity
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private:
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G4PhysicsTable* fIntegralTable1;
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G4PhysicsTable* fIntegralTable2;
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G4PhysicsTable* fIntegralTable3;
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G4EmSaturation* fEmSaturation;
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const G4ParticleDefinition* opticalphoton =
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G4OpticalPhoton::OpticalPhotonDefinition();
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G4int fNumPhotons;
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G4bool fScintillationByParticleType;
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G4bool fScintillationTrackInfo;
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G4bool fStackingFlag;
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G4bool fTrackSecondariesFirst;
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G4bool fFiniteRiseTime;
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#ifdef G4DEBUG_SCINTILLATION
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G4double ScintTrackEDep, ScintTrackYield;
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#endif
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G4double single_exp(G4double t, G4double tau2);
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G4double bi_exp(G4double t, G4double tau1, G4double tau2);
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// emission time distribution when there is a finite rise time
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G4double sample_time(G4double tau1, G4double tau2);
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G4int secID = -1; // creator modelID
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G4int fNumEnergyWarnings = 0;
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};
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////////////////////
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// Inline methods
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////////////////////
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inline G4bool G4Scintillation::GetTrackSecondariesFirst() const
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{
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return fTrackSecondariesFirst;
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}
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inline G4bool G4Scintillation::GetFiniteRiseTime() const
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{
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return fFiniteRiseTime;
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}
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inline G4PhysicsTable* G4Scintillation::GetIntegralTable1() const
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{
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return fIntegralTable1;
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}
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inline G4PhysicsTable* G4Scintillation::GetIntegralTable2() const
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{
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return fIntegralTable2;
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}
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inline G4PhysicsTable* G4Scintillation::GetIntegralTable3() const
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{
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return fIntegralTable3;
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}
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inline void G4Scintillation::AddSaturation(G4EmSaturation* sat)
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{
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fEmSaturation = sat;
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}
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inline void G4Scintillation::RemoveSaturation() { fEmSaturation = nullptr; }
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inline G4EmSaturation* G4Scintillation::GetSaturation() const
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{
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return fEmSaturation;
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}
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inline G4bool G4Scintillation::GetScintillationByParticleType() const
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{
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return fScintillationByParticleType;
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}
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inline G4bool G4Scintillation::GetScintillationTrackInfo() const
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{
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return fScintillationTrackInfo;
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}
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inline G4bool G4Scintillation::GetStackPhotons() const { return fStackingFlag; }
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inline G4int G4Scintillation::GetNumPhotons() const { return fNumPhotons; }
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inline G4double G4Scintillation::single_exp(G4double t, G4double tau2)
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{
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return std::exp(-1.0 * t / tau2) / tau2;
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}
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inline G4double G4Scintillation::bi_exp(G4double t, G4double tau1,
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G4double tau2)
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{
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return std::exp(-1.0 * t / tau2) * (1 - std::exp(-1.0 * t / tau1)) / tau2 /
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tau2 * (tau1 + tau2);
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}
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#endif /* G4Scintillation_h */
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