Gabriele Cosmo
266 lines
9.7 KiB
C++
266 lines
9.7 KiB
C++
// This code implementation is the intellectual property of
|
|
// the RD44 GEANT4 collaboration.
|
|
//
|
|
// By copying, distributing or modifying the Program (or any work
|
|
// based on the Program) you indicate your acceptance of this statement,
|
|
// and all its terms.
|
|
//
|
|
// $Id: G4eEnergyLossPlus.hh,v 1.3 1999/04/28 15:07:52 urban Exp $
|
|
// GEANT4 tag $Name: geant4-00-01 $
|
|
//
|
|
// $Id:
|
|
// ------------------------------------------------------------
|
|
// GEANT 4 class header file
|
|
//
|
|
// For information related to this code contact:
|
|
// CERN, IT Division, ASD group
|
|
// History: first implementation, based on object model of
|
|
// 2nd December 1995, G.Cosmo
|
|
// ---------- G4eEnergyLossPlus physics process -----------
|
|
// by Laszlo Urban, 20 March 1997
|
|
// ************************************************************
|
|
// It is the first implementation of the new unified Energy Loss process.
|
|
// It calculates the continuous energy loss for e+/e-.
|
|
// Processes giving contribution to the continuous loss :
|
|
// ionisation (= cont.ion.loss + delta ray production)
|
|
// bremsstrahlung (= cont.loss due to sooft brems+discrete bremsstrahlung)
|
|
// can be added more easily ..........
|
|
// This class creates static dE/dx and range tables for e+ and e-,
|
|
// which tables can be used by other processes.
|
|
// ---------------------------------------------------------------
|
|
// 18/11/98 , L. Urban
|
|
// It is a modified version of G4eEnergyLoss:
|
|
// continuous energy loss with generation of subcutoff delta rays
|
|
// 02/02/99 new data members , L.Urban
|
|
// ---------------------------------------------------------------
|
|
|
|
#ifndef G4eEnergyLossPlus_h
|
|
#define G4eEnergyLossPlus_h 1
|
|
|
|
#include "G4ios.hh"
|
|
#include "globals.hh"
|
|
#include "Randomize.hh"
|
|
#include "G4VContinuousDiscreteProcess.hh"
|
|
#include "G4Material.hh"
|
|
#include "G4Element.hh"
|
|
#include "G4VParticleChange.hh"
|
|
#include "globals.hh"
|
|
#include "G4Track.hh"
|
|
#include "G4Step.hh"
|
|
#include "G4Electron.hh"
|
|
#include "G4Positron.hh"
|
|
#include "G4PhysicsLogVector.hh"
|
|
#include "G4PhysicsLinearVector.hh"
|
|
#include "G4EnergyLossTables.hh"
|
|
|
|
class G4EnergyLossMessenger;
|
|
|
|
|
|
class G4eEnergyLossPlus : public G4VContinuousDiscreteProcess
|
|
|
|
{
|
|
public:
|
|
|
|
G4eEnergyLossPlus(const G4String& );
|
|
|
|
~G4eEnergyLossPlus();
|
|
|
|
G4bool IsApplicable(const G4ParticleDefinition&);
|
|
|
|
|
|
public:
|
|
|
|
void BuildDEDXTable(const G4ParticleDefinition& aParticleType);
|
|
|
|
G4double GetContinuousStepLimit(const G4Track& track,
|
|
G4double previousStepSize,
|
|
G4double currentMinimumStep,
|
|
G4double& currentSafety);
|
|
|
|
G4VParticleChange* AlongStepDoIt(const G4Track& track,
|
|
const G4Step& Step) ;
|
|
|
|
virtual G4double GetMeanFreePath(const G4Track& track,
|
|
G4double previousStepSize,
|
|
G4ForceCondition* condition) = 0;
|
|
|
|
virtual G4VParticleChange* PostStepDoIt(const G4Track& track,
|
|
const G4Step& Step) = 0;
|
|
|
|
|
|
private:
|
|
|
|
void BuildRangeTable(const G4ParticleDefinition& aParticleType);
|
|
|
|
void BuildInverseRangeTable(const G4ParticleDefinition& aParticleType);
|
|
|
|
void BuildTimeTables(const G4ParticleDefinition& aParticleType);
|
|
|
|
void BuildRangeVector(G4int materialIndex,
|
|
G4PhysicsLogVector* rangeVector);
|
|
|
|
void BuildLabTimeVector(G4int materialIndex,
|
|
G4PhysicsLogVector* rangeVector);
|
|
|
|
void BuildProperTimeVector(G4int materialIndex,
|
|
G4PhysicsLogVector* rangeVector);
|
|
|
|
void InvertRangeVector(G4int materialIndex,
|
|
G4PhysicsLogVector* rangeVector);
|
|
|
|
G4double RangeIntLin(G4PhysicsVector* physicsVector,G4int nbin);
|
|
|
|
G4double RangeIntLog(G4PhysicsVector* physicsVector,G4int nbin);
|
|
G4double LabTimeIntLog(G4PhysicsVector* physicsVector,G4int nbin);
|
|
G4double ProperTimeIntLog(G4PhysicsVector* physicsVector,G4int nbin);
|
|
|
|
void BuildRangeCoeffATable(const G4ParticleDefinition& aParticleType);
|
|
void BuildRangeCoeffBTable(const G4ParticleDefinition& aParticleType);
|
|
void BuildRangeCoeffCTable(const G4ParticleDefinition& aParticleType);
|
|
|
|
G4double GetConstraints(const G4DynamicParticle* aParticle,
|
|
G4Material* aMaterial);
|
|
|
|
G4double GetLossWithFluct(const G4DynamicParticle* aParticle,
|
|
G4Material* aMaterial,
|
|
G4double threshold);
|
|
|
|
// hide assignment operator
|
|
G4eEnergyLossPlus (G4eEnergyLossPlus &);
|
|
G4eEnergyLossPlus & operator=(const G4eEnergyLossPlus &right);
|
|
|
|
protected:
|
|
|
|
G4PhysicsTable* theLossTable;
|
|
|
|
G4double ParticleMass; // heavily used
|
|
|
|
G4double MinKineticEnergy ; //
|
|
|
|
G4double Charge,lastCharge ;
|
|
|
|
G4PhysicsTable* theDEDXTable;
|
|
G4PhysicsTable* theRangeTable;
|
|
|
|
G4PhysicsTable* theRangeCoeffATable;
|
|
G4PhysicsTable* theRangeCoeffBTable;
|
|
G4PhysicsTable* theRangeCoeffCTable;
|
|
|
|
private:
|
|
|
|
G4PhysicsTable* theInverseRangeTable;
|
|
|
|
G4PhysicsTable* theLabTimeTable ;
|
|
G4PhysicsTable* theProperTimeTable ;
|
|
|
|
G4int CounterOfProcess;
|
|
G4PhysicsTable** RecorderOfProcess;
|
|
|
|
G4double fdEdx; // computed in GetConstraints
|
|
G4double fRangeNow; // computed in GetConstraints
|
|
|
|
G4double linLossLimit ; //
|
|
|
|
G4int TotBin; // number of bins in table,
|
|
// calculated in BuildPhysicTable
|
|
G4double LowestKineticEnergy;
|
|
G4double HighestKineticEnergy;
|
|
G4double RTable,LOGRTable; // LOGRTable=log(HighestKineticEnergy-
|
|
// LowestKineticEnergy)/TotBin
|
|
// RTable = exp(LOGRTable)
|
|
|
|
G4double c1N,c2N ; // coeffs to compute nb of deltas
|
|
G4int Ndeltamax ; // upper limit for nb of subcutoff
|
|
// delta rays in one step
|
|
// variables for the integration routines
|
|
G4double taulow,tauhigh,ltaulow,ltauhigh;
|
|
|
|
// data members to speed up the fluctuation calculation
|
|
G4Material* lastMaterial;
|
|
G4int imat;
|
|
G4double f1Fluct,f2Fluct,e1Fluct,e2Fluct,rateFluct,ipotFluct;
|
|
G4double e1LogFluct,e2LogFluct,ipotLogFluct;
|
|
const G4double MaxExcitationNumber ;
|
|
const G4double probLimFluct ;
|
|
const long nmaxDirectFluct,nmaxCont1,nmaxCont2 ;
|
|
|
|
//
|
|
// static part of the class
|
|
//
|
|
|
|
protected:
|
|
|
|
//basic DEDX and Range tables
|
|
static G4PhysicsTable* theDEDXElectronTable ;
|
|
static G4PhysicsTable* theDEDXPositronTable ;
|
|
static G4PhysicsTable* theRangeElectronTable ;
|
|
static G4PhysicsTable* theRangePositronTable ;
|
|
|
|
//inverse tables of the range tables
|
|
static G4PhysicsTable* theInverseRangeElectronTable;
|
|
static G4PhysicsTable* theInverseRangePositronTable;
|
|
|
|
// lab and proper time tables
|
|
static G4PhysicsTable* theLabTimeElectronTable ;
|
|
static G4PhysicsTable* theLabTimePositronTable ;
|
|
static G4PhysicsTable* theProperTimeElectronTable ;
|
|
static G4PhysicsTable* theProperTimePositronTable ;
|
|
|
|
//processes inherited from G4eEnergyLossPlus
|
|
//register themselves in the static array Recorder
|
|
//for electrons/positrons separately
|
|
//nb of contributing processes = NbOfProcesses
|
|
static G4int NbOfProcesses;
|
|
static G4int CounterOfElectronProcess;
|
|
static G4int CounterOfPositronProcess ;
|
|
static G4PhysicsTable** RecorderOfElectronProcess;
|
|
static G4PhysicsTable** RecorderOfPositronProcess;
|
|
|
|
static G4double MinDeltaCutInRange; // minimum cut for delta rays
|
|
static G4double* MinDeltaEnergy ;
|
|
|
|
private:
|
|
|
|
//for interpolation within the tables
|
|
static G4PhysicsTable* theeRangeCoeffATable;
|
|
static G4PhysicsTable* theeRangeCoeffBTable;
|
|
static G4PhysicsTable* theeRangeCoeffCTable;
|
|
static G4PhysicsTable* thepRangeCoeffATable;
|
|
static G4PhysicsTable* thepRangeCoeffBTable;
|
|
static G4PhysicsTable* thepRangeCoeffCTable;
|
|
|
|
static G4double dRoverRange; // dRoverRange is the maximum allowed
|
|
// deltarange/range in one Step
|
|
static G4double finalRange; // final step before stopping
|
|
static G4double c1lim,c2lim,c3lim ; // coeffs for computing steplimit
|
|
|
|
static G4bool rndmStepFlag; // control the randomization of the step
|
|
static G4bool EnlossFlucFlag; // control the energy loss fluctuation
|
|
|
|
static G4EnergyLossMessenger* eLossMessenger;
|
|
|
|
public:
|
|
|
|
static void SetNbOfProcesses(G4int nb) {NbOfProcesses=nb;};
|
|
static void PlusNbOfProcesses() {NbOfProcesses++ ;};
|
|
static void MinusNbOfProcesses() {NbOfProcesses-- ;};
|
|
static G4int GetNbOfProcesses() {return NbOfProcesses;};
|
|
|
|
static void SetRndmStep (G4bool value) {rndmStepFlag = value;}
|
|
static void SetEnlossFluc (G4bool value) {EnlossFlucFlag = value;}
|
|
static void SetStepFunction (G4double c1, G4double c2)
|
|
{dRoverRange = c1; finalRange = c2;
|
|
c1lim=dRoverRange ;
|
|
c2lim=2.*(1-dRoverRange)*finalRange;
|
|
c3lim=-(1.-dRoverRange)*finalRange*finalRange;
|
|
}
|
|
|
|
static void SetMinDeltaCutInRange(G4double value)
|
|
{MinDeltaCutInRange = value;}
|
|
};
|
|
|
|
#include "G4eEnergyLossPlus.icc"
|
|
|
|
#endif
|
|
|