Gabriele Cosmo
274 lines
8.7 KiB
C++
274 lines
8.7 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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//
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//
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////////////////////////////////////////////////////////////////////////
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// Cerenkov Radiation Class Definition
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////////////////////////////////////////////////////////////////////////
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//
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// File: G4Cerenkov.hh
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// Description: Discrete Process - Generation of Cerenkov Photons
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// Version: 2.0
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// Created: 1996-02-21
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// Author: Juliet Armstrong
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// Updated: 2007-09-30 change inheritance to G4VDiscreteProcess
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// 2005-07-28 add G4ProcessType to constructor
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// 1999-10-29 add method and class descriptors
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// 1997-04-09 by Peter Gumplinger
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// > G4MaterialPropertiesTable; new physics/tracking scheme
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// mail: gum@triumf.ca
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//
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////////////////////////////////////////////////////////////////////////
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#ifndef G4Cerenkov_h
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#define G4Cerenkov_h 1
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/////////////
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// Includes
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/////////////
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#include <CLHEP/Units/SystemOfUnits.h>
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#include "globals.hh"
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#include "templates.hh"
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#include "Randomize.hh"
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#include "G4ThreeVector.hh"
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#include "G4ParticleMomentum.hh"
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#include "G4Step.hh"
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#include "G4VProcess.hh"
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#include "G4OpticalPhoton.hh"
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#include "G4DynamicParticle.hh"
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#include "G4Material.hh"
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#include "G4PhysicsTable.hh"
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#include "G4MaterialPropertyVector.hh"
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#include "G4MaterialPropertiesTable.hh"
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#include "G4PhysicsOrderedFreeVector.hh"
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// Class Description:
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// Discrete Process -- Generation of Cerenkov Photons.
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// Class inherits publicly from G4VDiscreteProcess.
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// Class Description - End:
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/////////////////////
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// Class Definition
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/////////////////////
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class G4Cerenkov : public G4VProcess
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{
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public:
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////////////////////////////////
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// Constructors and Destructor
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////////////////////////////////
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explicit G4Cerenkov(const G4String& processName = "Cerenkov",
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G4ProcessType type = fElectromagnetic);
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~G4Cerenkov();
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explicit G4Cerenkov(const G4Cerenkov &right);
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private:
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//////////////
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// Operators
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//////////////
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G4Cerenkov& operator=(const G4Cerenkov &right) = delete;
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public:
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////////////
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// Methods
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////////////
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G4bool IsApplicable(const G4ParticleDefinition& aParticleType) override;
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// Returns true -> 'is applicable', for all charged particles
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// except short-lived particles.
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void BuildPhysicsTable(const G4ParticleDefinition& aParticleType) override;
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// Build table at a right time
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G4double GetMeanFreePath(const G4Track& aTrack,
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G4double, G4ForceCondition* );
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// Returns the discrete step limit and sets the 'StronglyForced'
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// condition for the DoIt to be invoked at every step.
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G4double PostStepGetPhysicalInteractionLength(const G4Track& aTrack,
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G4double ,
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G4ForceCondition* ) override;
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// Returns the discrete step limit and sets the 'StronglyForced'
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// condition for the DoIt to be 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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// This is the method implementing the Cerenkov process.
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// no operation in AtRestDoIt and AlongStepDoIt
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virtual G4double AlongStepGetPhysicalInteractionLength(const G4Track&,
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G4double ,
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G4double ,
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G4double& ,
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G4GPILSelection*
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) override { return -1.0; };
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virtual G4double AtRestGetPhysicalInteractionLength(const G4Track& ,
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G4ForceCondition*
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) override { return -1.0; };
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// no operation in AtRestDoIt and AlongStepDoIt
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virtual G4VParticleChange* AtRestDoIt(const G4Track& , const G4Step& )
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override {return nullptr;};
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virtual G4VParticleChange* AlongStepDoIt(const G4Track& , const G4Step&)
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override {return nullptr;};
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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 Cerenkov photons are tracked next. When all have
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// 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 SetMaxBetaChangePerStep(const G4double d);
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// Set the maximum allowed change in beta = v/c in % (perCent)
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// per step.
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G4double GetMaxBetaChangePerStep() const;
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// Returns the maximum allowed change in beta = v/c in % (perCent)
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void SetMaxNumPhotonsPerStep(const G4int NumPhotons);
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// Set the maximum number of Cerenkov photons allowed to be
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// generated during a tracking step. This is an average ONLY;
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// the actual number will vary around this average. If invoked,
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// the maximum photon stack will roughly be of the size set.
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// If not called, the step is not limited by the number of
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// photons generated.
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G4int GetMaxNumPhotonsPerStep() const;
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// Returns the maximum number of Cerenkov photons allowed to be
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// generated during a tracking step.
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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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G4PhysicsTable* GetPhysicsTable() const;
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// Returns the address of the physics table.
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void DumpPhysicsTable() const;
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// Prints the physics table.
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private:
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void BuildThePhysicsTable();
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/////////////////////
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// Helper Functions
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/////////////////////
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G4double GetAverageNumberOfPhotons(const G4double charge,
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const G4double beta,
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const G4Material *aMaterial,
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G4MaterialPropertyVector* Rindex) const;
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///////////////////////
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// Class Data Members
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///////////////////////
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protected:
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G4PhysicsTable* thePhysicsTable;
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// A Physics Table can be either a cross-sections table or
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// an energy table (or can be used for other specific
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// purposes).
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private:
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G4bool fTrackSecondariesFirst;
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G4double fMaxBetaChange;
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G4int fMaxPhotons;
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G4bool fStackingFlag;
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G4int fNumPhotons;
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};
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////////////////////
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// Inline methods
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////////////////////
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inline
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G4bool G4Cerenkov::GetTrackSecondariesFirst() const
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{
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return fTrackSecondariesFirst;
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}
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inline
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G4double G4Cerenkov::GetMaxBetaChangePerStep() const
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{
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return fMaxBetaChange;
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}
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inline
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G4int G4Cerenkov::GetMaxNumPhotonsPerStep() const
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{
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return fMaxPhotons;
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}
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inline
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void G4Cerenkov::SetStackPhotons(const G4bool stackingFlag)
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{
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fStackingFlag = stackingFlag;
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}
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inline
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G4bool G4Cerenkov::GetStackPhotons() const
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{
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return fStackingFlag;
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}
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inline
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G4int G4Cerenkov::GetNumPhotons() const
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{
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return fNumPhotons;
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}
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inline
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G4PhysicsTable* G4Cerenkov::GetPhysicsTable() const
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{
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return thePhysicsTable;
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}
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#endif /* G4Cerenkov_h */
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