Gabriele Cosmo
313 lines
11 KiB
C++
313 lines
11 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: G4hEnergyLossPlus.hh,v 1.3.8.1 1999/12/07 20:50:54 gunter Exp $
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// GEANT4 tag $Name: geant4-01-00 $
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//
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// $Id:
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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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// ---------- G4hEnergyLossPlus 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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//
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#ifndef G4hEnergyLossPlus_h
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#define G4hEnergyLossPlus_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 "G4VContinuousDiscreteProcess.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 G4EnergyLossMessenger;
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class G4hEnergyLossPlus : public G4VContinuousDiscreteProcess
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{
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public:
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G4hEnergyLossPlus(const G4String& );
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~G4hEnergyLossPlus();
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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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G4hEnergyLossPlus(G4hEnergyLossPlus &);
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G4hEnergyLossPlus & operator=(const G4hEnergyLossPlus &right);
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G4double GetConstraints(const G4DynamicParticle *aParticle,
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G4Material *aMaterial);
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G4double GetLossWithFluct(const G4DynamicParticle *aParticle,
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G4Material *aMaterial,
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G4double MeanLoss) ;
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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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G4double fdEdx; // computed in GetContraints
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G4double fRangeNow ; // computed in GetContraints
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G4double linLossLimit ;
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// variables for the integration routines
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static G4double Mass,taulow,tauhigh,ltaulow,ltauhigh;
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// data members to speed up the fluctuation calculation
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G4Material *lastMaterial ;
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G4int imat ;
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G4double f1Fluct,f2Fluct,e1Fluct,e2Fluct,rateFluct,ipotFluct;
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G4double e1LogFluct,e2LogFluct,ipotLogFluct;
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const G4double MaxExcitationNumber ;
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const G4double probLimFluct ;
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const long nmaxDirectFluct,nmaxCont1,nmaxCont2 ;
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// ====================================================================
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// static part of the class
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public:
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// get the number of processes contributing to the cont.energy loss
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static G4int GetNumberOfProcesses() { return NumberOfProcesses; };
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// set the number of processes contributing to the cont.energy loss
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static void SetNumberOfProcesses(G4int number)
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{NumberOfProcesses=number ; };
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// Increment the number of processes contributing to the cont.energy loss
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static void PlusNumberOfProcesses()
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{ NumberOfProcesses++ ; };
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// decrement the number of processes contributing to the cont.energy loss
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static void MinusNumberOfProcesses()
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{ NumberOfProcesses-- ; };
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static void SetdRoverRange(G4double value) {dRoverRange = value;}
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static void SetRndmStep (G4bool value) {rndmStepFlag = value;}
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static void SetEnlossFluc (G4bool value) {EnlossFlucFlag = value;}
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static void SetStepFunction (G4double c1, G4double c2)
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{dRoverRange = c1; finalRange = c2;
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c1lim=dRoverRange ;
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c2lim=2.*(1-dRoverRange)*finalRange;
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c3lim=-(1.-dRoverRange)*finalRange*finalRange;
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}
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static void SetMinDeltaCutInRange(G4double value)
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{MinDeltaCutInRange = value;}
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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 void BuildRangeTable(const G4ParticleDefinition& aParticleType);
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static void BuildInverseRangeTable(
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const G4ParticleDefinition& aParticleType);
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static void BuildTimeTables(const G4ParticleDefinition& aParticleType);
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static void BuildLabTimeVector(G4int materialIndex,
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G4PhysicsLogVector* rangeVector);
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static void BuildProperTimeVector(G4int materialIndex,
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G4PhysicsLogVector* rangeVector);
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static void InvertRangeVector(G4int materialIndex,
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G4PhysicsLogVector* rangeVector);
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static void BuildRangeVector(G4int materialIndex,
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G4PhysicsLogVector* rangeVector);
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static G4double LabTimeIntLog(G4PhysicsVector* physicsVector
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,G4int nbin);
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static G4double ProperTimeIntLog(G4PhysicsVector* physicsVector,
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G4int nbin);
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static G4double RangeIntLin(G4PhysicsVector* physicsVector
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,G4int nbin);
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static G4double RangeIntLog(G4PhysicsVector* physicsVector
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,G4int nbin);
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static void BuildRangeCoeffATable(
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const G4ParticleDefinition& aParticleType);
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static void BuildRangeCoeffBTable(
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const G4ParticleDefinition& aParticleType);
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static void BuildRangeCoeffCTable(
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const G4ParticleDefinition& aParticleType);
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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 G4hEnergyLossPlus
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// register themselves in the static array Recorder
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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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// particle mass
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static G4double ParticleMass ;
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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 MinDeltaCutInRange; // minimum cut for delta rays
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static G4double* MinDeltaEnergy ;
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static G4double LowestKineticEnergy;
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static G4double HighestKineticEnergy;
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static G4int TotBin; // number of bins in table,
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// calculated in BuildPhysicsTable
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static G4double RTable,LOGRTable; // LOGRTable=log(HighestKineticEnergy
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// /LowestKineticEnergy)/TotBin
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// RTable = exp(LOGRTable)
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static G4double Charge ;
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private:
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static G4PhysicsTable* theDEDXTable;
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static G4PhysicsTable* theRangeTable;
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static G4PhysicsTable* theInverseRangeTable;
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static G4PhysicsTable* theLabTimeTable;
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static G4PhysicsTable* theProperTimeTable;
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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 G4PhysicsTable* theRangeCoeffATable;
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static G4PhysicsTable* theRangeCoeffBTable;
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static G4PhysicsTable* theRangeCoeffCTable;
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static G4double dRoverRange ; // maximum allowed deltarange/range
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// in one step
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static G4double finalRange ; // last step before stop
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static G4double c1lim,c2lim,c3lim ; // coeffs for computing steplimit
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static G4bool rndmStepFlag ;
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static G4bool EnlossFlucFlag ;
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static G4int NumberOfProcesses ;
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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 "G4hEnergyLossPlus.icc"
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#endif
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