Gabriele Cosmo
271 lines
9.2 KiB
C++
271 lines
9.2 KiB
C++
// This code implementation is the intellectual property of
|
|
// the 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: G4MuEnergyLoss.hh,v 1.3.8.1 1999/12/07 20:50:43 gunter Exp $
|
|
// GEANT4 tag $Name: geant4-01-00 $
|
|
//
|
|
// $Id:
|
|
// -------------------------------------------------------------------
|
|
// GEANT 4 class header file
|
|
//
|
|
// For information related to this code contact:
|
|
// CERN, CN Division, ASD group
|
|
// History: first implementation, based on object model of
|
|
// 2nd December 1995, G.Cosmo
|
|
// ---------- G4MuEnergyLoss physics process -----------
|
|
// by Laszlo Urban, September 1997
|
|
// ********************************************************************
|
|
// It is the implementation of the NEW UNIFIED ENERGY LOSS PROCESS.
|
|
// It calculates the continuous energy loss for muons.
|
|
// Processes giving contribution to the continuous loss :
|
|
// ionisation (= cont.ion.loss + delta ray production)
|
|
// bremsstrahlung
|
|
// e+e- pair production
|
|
// can be added more easily ..........
|
|
// This class creates static muplus/muminus dE/dx and range tables ,
|
|
// which tables can be used by other processes.
|
|
// ************************************************************
|
|
// some corrections by L.Urban on 27/05/98 , (but other corrections come soon!)
|
|
// cleanup L.Urban on 23/10/98
|
|
// ------------------------------------------------------------
|
|
|
|
#ifndef G4MuEnergyLoss_h
|
|
#define G4MuEnergyLoss_h 1
|
|
|
|
#include "G4ios.hh"
|
|
#include <fstream.h>
|
|
#include <iomanip.h>
|
|
#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 "G4Gamma.hh"
|
|
#include "G4Electron.hh"
|
|
#include "G4Positron.hh"
|
|
#include "G4MuonMinus.hh"
|
|
#include "G4MuonPlus.hh"
|
|
#include "G4PhysicsLogVector.hh"
|
|
#include "G4PhysicsLinearVector.hh"
|
|
|
|
class G4EnergyLossMessenger ;
|
|
|
|
class G4MuEnergyLoss : public G4VContinuousDiscreteProcess
|
|
|
|
{
|
|
public:
|
|
|
|
G4MuEnergyLoss(const G4String& );
|
|
~G4MuEnergyLoss();
|
|
|
|
G4bool IsApplicable(const G4ParticleDefinition&);
|
|
|
|
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 ;
|
|
|
|
protected:
|
|
|
|
|
|
|
|
private:
|
|
|
|
// hide assignment operator
|
|
G4MuEnergyLoss(G4MuEnergyLoss &);
|
|
G4MuEnergyLoss & operator=(const G4MuEnergyLoss &right);
|
|
|
|
void BuildRangeTable(const G4ParticleDefinition& aParticleType);
|
|
|
|
void BuildInverseRangeTable(
|
|
const G4ParticleDefinition& aParticleType);
|
|
|
|
void BuildTimeTables(const G4ParticleDefinition& aParticleType);
|
|
|
|
void BuildLabTimeVector(G4int materialIndex,
|
|
G4PhysicsLogVector* rangeVector);
|
|
|
|
void BuildProperTimeVector(G4int materialIndex,
|
|
G4PhysicsLogVector* rangeVector);
|
|
|
|
void InvertRangeVector(G4int materialIndex,
|
|
G4PhysicsLogVector* rangeVector);
|
|
|
|
|
|
void BuildRangeVector(G4int materialIndex,
|
|
G4PhysicsLogVector* rangeVector);
|
|
|
|
G4double LabTimeIntLog(G4PhysicsVector* physicsVector,G4int nbin);
|
|
|
|
G4double ProperTimeIntLog(G4PhysicsVector* physicsVector,G4int nbin);
|
|
|
|
G4double RangeIntLin(G4PhysicsVector* physicsVector,G4int nbin);
|
|
|
|
G4double RangeIntLog(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 MeanLoss) ;
|
|
|
|
// =====================================================================
|
|
public:
|
|
|
|
protected:
|
|
|
|
G4PhysicsTable* theLossTable ;
|
|
|
|
G4double lastgammaCutInRange ;
|
|
G4double lastelectronCutInRange ;
|
|
|
|
const G4Electron* theElectron;
|
|
const G4Positron* thePositron;
|
|
const G4MuonPlus* theMuonPlus;
|
|
const G4MuonMinus* theMuonMinus;
|
|
|
|
// particle mass
|
|
G4double ParticleMass;
|
|
|
|
// LowestKineticEnergy = lower limit of particle kinetic energy
|
|
// HighestKineticEnergy = upper limit of particle kinetic energy
|
|
// TotBin = number of bins
|
|
// ---------in the energy loss/range tables-------------------
|
|
G4double LowestKineticEnergy;
|
|
G4double HighestKineticEnergy;
|
|
G4int TotBin;// number of bins in table, calculated in BuildPhysicsTable
|
|
// from LowestKineticEnergy,HighestKineticEnergy and
|
|
// dToverTini
|
|
G4double RTable,LOGRTable; // LOGRTable=log(HighestKineticEnergy
|
|
// /LowestKineticEnergy)/TotBin
|
|
// RTable = exp(LOGRTable)
|
|
private:
|
|
|
|
G4PhysicsTable* theDEDXTable;
|
|
|
|
G4PhysicsTable* theRangeTable;
|
|
G4PhysicsTable* theInverseRangeTable;
|
|
|
|
G4PhysicsTable* theLabTimeTable;
|
|
G4PhysicsTable* theProperTimeTable;
|
|
|
|
G4PhysicsTable** RecorderOfProcess;
|
|
G4int CounterOfProcess;
|
|
|
|
G4PhysicsTable* theRangeCoeffATable;
|
|
G4PhysicsTable* theRangeCoeffBTable;
|
|
G4PhysicsTable* theRangeCoeffCTable;
|
|
|
|
// fdEdx=(-dE/dx)
|
|
// computed in GetConstraints at every call;
|
|
G4double fdEdx;
|
|
|
|
// fRangeNow is the actual range of the particle
|
|
// computed in GetConstraints
|
|
G4double fRangeNow ;
|
|
|
|
// EnergyBinNumber,RangeCoeffA,... are needed to compute range
|
|
G4int EnergyBinNumber ;
|
|
G4double RangeCoeffA,RangeCoeffB,RangeCoeffC ;
|
|
|
|
|
|
// variables for the integration routines
|
|
G4double taulow,tauhigh,ltaulow,ltauhigh;
|
|
|
|
// data members to speed up the fluctuation calculation
|
|
G4int imat ;
|
|
G4Material *lastMaterial ;
|
|
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
|
|
public:
|
|
|
|
static G4int GetNbOfProcesses() { return NbOfProcesses; };
|
|
static void SetNbOfProcesses(G4int number){ NbOfProcesses=number ; };
|
|
static void PlusNbOfProcesses() { NbOfProcesses++ ; };
|
|
static void MinusNbOfProcesses() { 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;}
|
|
|
|
protected:
|
|
|
|
static G4PhysicsTable* theDEDXmuplusTable ;
|
|
static G4PhysicsTable* theDEDXmuminusTable ;
|
|
static G4PhysicsTable* theRangemuplusTable ;
|
|
static G4PhysicsTable* theRangemuminusTable ;
|
|
|
|
static G4PhysicsTable* theInverseRangemuplusTable ;
|
|
static G4PhysicsTable* theInverseRangemuminusTable ;
|
|
|
|
static G4PhysicsTable* theLabTimemuplusTable ;
|
|
static G4PhysicsTable* theLabTimemuminusTable ;
|
|
|
|
static G4PhysicsTable* theProperTimemuplusTable ;
|
|
static G4PhysicsTable* theProperTimemuminusTable ;
|
|
|
|
|
|
// processes inherited from G4muEnergyLoss
|
|
// register themselves in the static array Recorder
|
|
// nb of contributing processes = NbOfProcesses
|
|
static G4int NbOfProcesses ;
|
|
static G4PhysicsTable** RecorderOfmuplusProcess;
|
|
static G4PhysicsTable** RecorderOfmuminusProcess;
|
|
static G4int CounterOfmuplusProcess ;
|
|
static G4int CounterOfmuminusProcess ;
|
|
|
|
private:
|
|
|
|
static G4PhysicsTable* themuplusRangeCoeffATable;
|
|
static G4PhysicsTable* themuplusRangeCoeffBTable;
|
|
static G4PhysicsTable* themuplusRangeCoeffCTable;
|
|
static G4PhysicsTable* themuminusRangeCoeffATable;
|
|
static G4PhysicsTable* themuminusRangeCoeffBTable;
|
|
static G4PhysicsTable* themuminusRangeCoeffCTable;
|
|
|
|
static G4double dRoverRange; // dRoverRange is the maximum allowed
|
|
// deltarange/range in one Step
|
|
static G4double finalRange; // final step before stopping
|
|
|
|
static G4bool rndmStepFlag; // control the randomization of the step
|
|
static G4bool EnlossFlucFlag; // control the energy loss fluctuation
|
|
|
|
static G4EnergyLossMessenger* eLossMessenger;
|
|
|
|
};
|
|
|
|
#include "G4MuEnergyLoss.icc"
|
|
|
|
#endif
|