Gabriele Cosmo
232 lines
7.6 KiB
C++
232 lines
7.6 KiB
C++
// This code implementation is the intellectual property of
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// the GEANT4 collaboration.
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//
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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 statement,
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// and all its terms.
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//
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// $Id: G4VhEnergyLoss.hh,v 1.7 2000/10/30 06:56:19 urban Exp $
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// GEANT4 tag $Name: geant4-03-00 $
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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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// For information related to this code contact:
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// CERN, IT Division, ASD group
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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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// ---------- G4VhEnergyLoss physics process -----------
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// by Laszlo Urban, 30 May 1997
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//
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// ************************************************************
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// It is the first implementation of the NEW UNIFIED ENERGY LOSS PROCESS.
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// It calculates the continuous energy loss for charged hadrons.
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// Processes giving contribution to the continuous loss :
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// ionisation (= cont.ion.loss + delta ray production)
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// can be added more easily ..........
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// This class creates static proton/antiproton dE/dx and range tables ,
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// which tables can be used by other processes.
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// The energy loss for other charged hadrons is calculated from the p/pbar
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// tables with scaled kinetic energy.
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//
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// ****************************************************************************
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// It is assumed that the cut in range is the same for all the charged hadrons!
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// ****************************************************************************
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//
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// 7/10/98 some bugs fixed + some cleanup , L.Urban
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// 22/10/98 cleanup , L.Urban
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// 02/02/99 several bugs fixed, L.Urban
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// 10/02/00 modifications , new e.m. structure, L.Urban
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//
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#ifndef G4VhEnergyLoss_h
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#define G4VhEnergyLoss_h 1
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#include "G4ios.hh"
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#include "globals.hh"
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#include "Randomize.hh"
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#include "G4VEnergyLoss.hh"
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#include "G4Material.hh"
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#include "G4Element.hh"
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#include "G4Proton.hh"
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#include "G4AntiProton.hh"
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#include "G4Electron.hh"
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#include "G4VParticleChange.hh"
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#include "G4Track.hh"
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#include "G4Step.hh"
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#include "G4PhysicsLogVector.hh"
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#include "G4PhysicsLinearVector.hh"
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class G4VhEnergyLoss : public G4VEnergyLoss
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{
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public:
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G4VhEnergyLoss(const G4String& );
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virtual ~G4VhEnergyLoss();
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G4bool IsApplicable(const G4ParticleDefinition&);
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G4double GetContinuousStepLimit(
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const G4Track& track,
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G4double previousStepSize,
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G4double currentMinimumStep,
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G4double& currentSafety) ;
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G4VParticleChange* AlongStepDoIt(const G4Track& track ,const G4Step& Step) ;
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virtual G4double GetMeanFreePath(
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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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virtual G4VParticleChange* PostStepDoIt(const G4Track& track,
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const G4Step& Step) = 0 ;
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protected:
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private:
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// hide assignment operator
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G4VhEnergyLoss(G4VhEnergyLoss &);
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G4VhEnergyLoss & operator=(const G4VhEnergyLoss &right);
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G4double GetConstraints(const G4DynamicParticle *aParticle,
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G4Material *aMaterial);
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G4double EnergyLossFluctuation(const G4DynamicParticle *aParticle,
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G4Material *aMaterial,
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G4double ChargeSquare,
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G4double MeanLoss,
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G4double Step);
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// =====================================================================
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public:
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protected:
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G4PhysicsTable* theLossTable ;
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G4double MinKineticEnergy ;
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private:
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static G4PhysicsTable* theDEDXTable ;
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G4double fdEdx; // computed in GetContraints
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G4double fRangeNow ; // computed in GetContraints
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G4double linLossLimit ;
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// ====================================================================
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// static part of the cc: // With description
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public:
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static void SetNbOfProcesses(G4int nb) {NbOfProcesses=nb;};
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// Sets number of processes giving contribution to the energy loss
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static void PlusNbOfProcesses() {NbOfProcesses++ ;};
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// Increases number of processes giving contribution to the energy loss
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static void MinusNbOfProcesses() {NbOfProcesses-- ;};
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// Decreases number of processes giving contribution to the energy loss
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static G4int GetNbOfProcesses() {return NbOfProcesses;};
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// Gets number of processes giving contribution to the energy loss
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// ( default value = 1)
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static void SetLowerBoundEloss(G4double val) {LowerBoundEloss=val;};
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static void SetUpperBoundEloss(G4double val) {UpperBoundEloss=val;};
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static void SetNbinEloss(G4int nb) {NbinEloss=nb;};
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static G4double GetLowerBoundEloss() {return LowerBoundEloss;};
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static G4double GetUpperBoundEloss() {return UpperBoundEloss;};
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static G4int GetNbinEloss() {return NbinEloss;};
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protected:
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static void BuildDEDXTable(const G4ParticleDefinition& aParticleType);
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private:
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static const G4Proton* theProton ;
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static const G4AntiProton* theAntiProton ;
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// ====================================================================
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public:
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protected:
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static G4PhysicsTable* theDEDXpTable ;
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static G4PhysicsTable* theDEDXpbarTable ;
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static G4PhysicsTable* theRangepTable ;
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static G4PhysicsTable* theRangepbarTable ;
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//inverse of the range tables
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static G4PhysicsTable* theInverseRangepTable ;
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static G4PhysicsTable* theInverseRangepbarTable ;
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//lab and proper time tables
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static G4PhysicsTable* theLabTimepTable ;
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static G4PhysicsTable* theLabTimepbarTable ;
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static G4PhysicsTable* theProperTimepTable ;
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static G4PhysicsTable* theProperTimepbarTable ;
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// processes inherited from G4VhEnergyLoss
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// register themselves in the static array Recorder
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static G4int NbOfProcesses ;
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static G4PhysicsTable** RecorderOfpProcess;
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static G4PhysicsTable** RecorderOfpbarProcess;
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static G4int CounterOfpProcess ;
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static G4int CounterOfpbarProcess ;
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// cut in range
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static G4double ptableElectronCutInRange;
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static G4double pbartableElectronCutInRange;
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static G4double Charge ;
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private:
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static G4int NbinEloss; // number of bins in table,
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// calculated in BuildPhysicTable
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static G4double LowerBoundEloss;
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static G4double UpperBoundEloss;
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static G4double RTable,LOGRTable; // LOGRTable=log(UpperBoundEloss-
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// LowerBoundEloss)/NbinEloss
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// RTable = exp(LOGRTable)
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static G4PhysicsTable** RecorderOfProcess;
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static G4int CounterOfProcess;
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static G4PhysicsTable* thepRangeCoeffATable;
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static G4PhysicsTable* thepRangeCoeffBTable;
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static G4PhysicsTable* thepRangeCoeffCTable;
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static G4PhysicsTable* thepbarRangeCoeffATable;
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static G4PhysicsTable* thepbarRangeCoeffBTable;
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static G4PhysicsTable* thepbarRangeCoeffCTable;
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static G4double c0N,c1N,c2N,c3N ; // coeffs to compute nb of deltas
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static G4int Ndeltamax ; // upper limit for nb of subcutoff
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// delta rays in one step
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};
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#include "G4VhEnergyLoss.icc"
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#endif
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