Gabriele Cosmo
415 lines
14 KiB
C++
415 lines
14 KiB
C++
//
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// ********************************************************************
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// * DISCLAIMER *
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// * *
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// * The following disclaimer summarizes all the specific disclaimers *
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// * of contributors to this software. The specific disclaimers,which *
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// * govern, are listed with their locations in: *
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// * http://cern.ch/geant4/license *
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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. *
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// * *
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// * This code implementation is the intellectual property of the *
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// * GEANT4 collaboration. *
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// * By copying, distributing or modifying the Program (or any work *
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// * based on the Program) you indicate your acceptance of this *
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// * statement, and all its terms. *
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// ********************************************************************
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//
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//
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// $Id: G4VProcess.hh,v 1.8.2.2 2001/06/28 20:20:11 gunter Exp $
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// GEANT4 tag $Name: $
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//
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//
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// ------------------------------------------------------------
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// GEANT 4 class header file
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//
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// History: first implementation, based on object model of
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// 2nd December 1995, G.Cosmo
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//
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// Class Description
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// This class is the virtual class for physics process objects.
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// It defines public methods which describe the behavior of
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// a physics process.
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//
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// ------------------------------------------------------------
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// New Physics scheme 18 Dec. 1996 H.Kurahige
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// ------------------------------------------------------------
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// change DoIt/GetPIL arguments type 20 Mar. 1997 H.Kurashige
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// modified AlongStepGPIL 17 Dec. 1997 H.Kurashige
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// modified for new ParticleChange 12 Mar. 1998 H.Kurashige
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// Add process trype 27 Mar. 1998 H.Kurashige
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// Remove thePhysicsTable 2 Aug. 1998 H.Kurashige
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// Add PILfactor and GPIL 3 Nov. 2000 H.Kurashige
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// Add Store/RetrievePhysicsTable 8 Nov. 2000 H.Kurashige
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// Modify Store/RetrievePhysicsTable methods 9 Mar. 2001 H.Kurashige
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#ifndef G4VProcess_h
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#define G4VProcess_h 1
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#include "globals.hh"
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#include "G4ios.hh"
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class G4ParticleDefinition;
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class G4DynamicParticle;
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class G4Track;
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class G4Step;
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#include "G4PhysicsTable.hh"
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#include "G4VParticleChange.hh"
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#include "G4ForceCondition.hh"
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#include "G4GPILSelection.hh"
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#include "G4ParticleChange.hh"
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#include "G4ProcessType.hh"
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class G4VProcess
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{
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// A virtual class for physics process objects. It defines
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// public methods which describe the behavior of a
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// physics process.
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private:
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// hide default constructor and assignment operator as private
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// do not hide default constructor for alpha version
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// G4VProcess G4VProcess();
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G4VProcess & operator=(const G4VProcess &right);
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public: // with description
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// constructor requires the process name and type
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G4VProcess(const G4String& aName = "NoName",
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G4ProcessType aType = fNotDefined );
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// copy constructor copys the name but does not copy the
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// physics table (0 pointer is assigned)
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G4VProcess(G4VProcess &right);
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public:
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// destructor
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virtual ~G4VProcess();
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// equal opperators
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G4int operator==(const G4VProcess &right) const;
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G4int operator!=(const G4VProcess &right) const;
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public: // with description
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////////////////////////////
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// DoIt /////////////////
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///////////////////////////
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virtual G4VParticleChange* PostStepDoIt(
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const G4Track& track,
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const G4Step& stepData
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) = 0;
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virtual G4VParticleChange* AlongStepDoIt(
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const G4Track& track,
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const G4Step& stepData
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) = 0;
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virtual G4VParticleChange* AtRestDoIt(
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const G4Track& track,
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const G4Step& stepData
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) = 0;
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// A virtual base class function that has to be overridden
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// by any subclass. The DoIt method actually performs the
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// physics process and determines either momentum change
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// of the production of secondaries etc.
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// arguments
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// const G4Track& track:
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// reference to the current G4Track information
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// const G4Step& stepData:
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// reference to the current G4Step information
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//////////////////////////
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// GPIL //////////////
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/////////////////////////
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virtual G4double AlongStepGetPhysicalInteractionLength(
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const G4Track& track,
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G4double previousStepSize,
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G4double currentMinimumStep,
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G4double& proposedSafety,
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G4GPILSelection* selection) = 0;
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virtual G4double AtRestGetPhysicalInteractionLength(
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const G4Track& track,
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G4ForceCondition* condition
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) = 0;
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virtual G4double PostStepGetPhysicalInteractionLength(
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const G4Track& track,
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G4double previousStepSize,
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G4ForceCondition* condition
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) = 0;
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// Returns the Step-size (actual length) which is allowed
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// by "this" process. (for AtRestGetPhysicalInteractionLength,
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// return value is Step-time) The NumberOfInteractionLengthLeft is
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// recalculated by using previousStepSize and the Step-size is
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// calucalted accoding to the resultant NumberOfInteractionLengthLeft.
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// using NumberOfInteractionLengthLeft, which is recalculated at
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// arguments
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// const G4Track& track:
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// reference to the current G4Track information
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// G4double* previousStepSize:
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// the Step-size (actual length) of the previous Step
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// of this track. Negative calue indicates that
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// NumberOfInteractionLengthLeft must be reset.
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// the current physical interaction legth of this process
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// G4ForceCondition* condition:
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// the flag indicates DoIt of this process is forced
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// to be called
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// Forced: Corresponding DoIt is forced
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// NotForced: Corresponding DoIt is called
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// if the Step size of this Step is determined
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// by this process
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// !! AlongStepDoIt is always called !!
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// G4double& currentMinimumStep:
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// this value is used for transformation of
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// true path length to geometrical path length
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////////// PIL factor ////////
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void SetPILfactor(G4double value);
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G4double GetPILfactor() const;
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// Set/Get factor for PhysicsInteractionLength
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// which is passed to G4SteppingManager for both AtRest and PostStep
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// These three GPIL methods are used by Stepping Manager.
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// They invoke virtual GPIL methods listed above.
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// As for AtRest and PostStep the returned value is multipled by thePILfactor
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//
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G4double AlongStepGPIL( const G4Track& track,
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G4double previousStepSize,
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G4double currentMinimumStep,
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G4double& proposedSafety,
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G4GPILSelection* selection );
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G4double AtRestGPIL( const G4Track& track,
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G4ForceCondition* condition );
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G4double PostStepGPIL( const G4Track& track,
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G4double previousStepSize,
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G4ForceCondition* condition );
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//////////////////////
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virtual G4bool IsApplicable(const G4ParticleDefinition&){return true;};
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// Returns true if this process object is applicable to
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// the particle type
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// Process will not be registered to a particle if IsApplicable is false
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virtual void BuildPhysicsTable(const G4ParticleDefinition&){};
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// Messaged by the Particle definition (via the Process manager)
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// whenever cross section tables have to be rebuilt (i.e. if new
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// materials have been defined).
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// It is overloaded by individual processes when they need physics
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// tables.
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// Processes which Build (for example in their
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// constructors) physics tables independent of cuts
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// should preferably use a
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// private void BuildThePhysicsTable()
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// function. Not another BuildPhysicsTable, please.
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virtual G4bool StorePhysicsTable(const G4String& directory,
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G4bool ascii = false)
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{return true;}
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// Store PhysicsTable in a file.
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// (return false in case of failure at I/O )
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virtual G4bool RetrievePhysicsTable(const G4String& directory,
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G4bool ascii = false)
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{return false;}
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// Retrieve Physics from a file.
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// (return true if the Physics Table can be build by using file)
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// (return false if the process has no functionality or in case of failure)
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// File name should be defined by each process
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// and the file should be placed under the directory specifed by the argument.
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////////////////////////////
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const G4String& GetProcessName() const;
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// Returns the name of the process.
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G4ProcessType GetProcessType() const;
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// Returns the process type.
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void SetProcessType(G4ProcessType );
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// Set the process type.
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static const G4String& GetProcessTypeName(G4ProcessType );
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// Returns the process type name
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virtual void StartTracking();
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virtual void EndTracking();
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// inform Start/End of tracking for each track to the physics process
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protected:
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G4VParticleChange* pParticleChange;
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// The pointer to G4VParticleChange object
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// which is modified and returned by address by the DoIt() method.
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// This pointer should be set in each physics process
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// after construction of derived class object.
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G4ParticleChange aParticleChange;
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// This object is kept for compatibility with old scheme
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// This will be removed in future
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G4double theNumberOfInteractionLengthLeft;
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// The flight length left for the current tracking particle
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// in unit of "Interaction length".
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G4double currentInteractionLength;
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// The InteractionLength in the current material
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public: // with description
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virtual void ResetNumberOfInteractionLengthLeft();
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// reset (determine the value of)NumberOfInteractionLengthLeft
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protected: // with description
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virtual void SubtractNumberOfInteractionLengthLeft(
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G4double previousStepSize
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);
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// subtract NumberOfInteractionLengthLeft by the value corresponding to
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// previousStepSize
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virtual void ClearNumberOfInteractionLengthLeft();
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// clear NumberOfInteractionLengthLeft
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// !!! This method should be at the end of PostStepDoIt()
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// !!! and AtRestDoIt
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private:
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G4String theProcessName;
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// The name of the process
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G4ProcessType theProcessType;
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// The type of the process
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G4double thePILfactor;
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// factor for PhysicsInteractionLength
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// which is passed to G4SteppingManager
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public: // with description
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virtual void DumpInfo() const;
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// dump out process information
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public: // with description
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void SetVerboseLevel(G4int value);
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G4int GetVerboseLevel() const;
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// set/get controle flag for output message
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// 0: Silent
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// 1: Warning message
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// 2: More
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protected:
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G4int verboseLevel;
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// controle flag for output message
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};
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// -----------------------------------------
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// inlined function members implementation
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// -----------------------------------------
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#include "Randomize.hh"
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inline
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const G4String& G4VProcess::GetProcessName() const
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{
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return theProcessName;
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}
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inline
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G4ProcessType G4VProcess::GetProcessType() const
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{
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return theProcessType;
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}
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inline
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void G4VProcess::SetProcessType(G4ProcessType aType)
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{
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theProcessType = aType;
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}
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inline void G4VProcess::SetVerboseLevel(G4int value)
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{
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verboseLevel = value;
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}
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inline G4int G4VProcess::GetVerboseLevel() const
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{
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return verboseLevel;
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}
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inline void G4VProcess::ResetNumberOfInteractionLengthLeft()
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{
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theNumberOfInteractionLengthLeft = -log( G4UniformRand() );
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}
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inline void G4VProcess::ClearNumberOfInteractionLengthLeft()
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{
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theNumberOfInteractionLengthLeft = -1.0;
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}
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inline void G4VProcess::SetPILfactor(G4double value)
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{
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if (value>0.) {
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thePILfactor = value;
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}
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}
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inline G4double G4VProcess::GetPILfactor() const
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{
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return thePILfactor;
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}
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inline G4double G4VProcess::AlongStepGPIL( const G4Track& track,
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G4double previousStepSize,
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G4double currentMinimumStep,
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G4double& proposedSafety,
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G4GPILSelection* selection )
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{
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G4double value
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=AlongStepGetPhysicalInteractionLength(track, previousStepSize, currentMinimumStep, proposedSafety, selection);
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return value;
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}
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inline G4double G4VProcess::AtRestGPIL( const G4Track& track,
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G4ForceCondition* condition )
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{
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G4double value
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=AtRestGetPhysicalInteractionLength(track, condition);
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return thePILfactor*value;
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}
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inline G4double G4VProcess::PostStepGPIL( const G4Track& track,
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G4double previousStepSize,
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G4ForceCondition* condition )
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{
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G4double value
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=PostStepGetPhysicalInteractionLength(track, previousStepSize, condition);
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return thePILfactor*value;
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}
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#endif
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