Gabriele Cosmo
283 lines
8.1 KiB
C++
283 lines
8.1 KiB
C++
//
|
|
// ********************************************************************
|
|
// * License and Disclaimer *
|
|
// * *
|
|
// * The Geant4 software is copyright of the Copyright Holders of *
|
|
// * the Geant4 Collaboration. It is provided under the terms and *
|
|
// * conditions of the Geant4 Software License, included in the file *
|
|
// * LICENSE and available at http://cern.ch/geant4/license . These *
|
|
// * include a list of copyright holders. *
|
|
// * *
|
|
// * Neither the authors of this software system, nor their employing *
|
|
// * institutes,nor the agencies providing financial support for this *
|
|
// * work make any representation or warranty, express or implied, *
|
|
// * regarding this software system or assume any liability for its *
|
|
// * use. Please see the license in the file LICENSE and URL above *
|
|
// * for the full disclaimer and the limitation of liability. *
|
|
// * *
|
|
// * This code implementation is the result of the scientific and *
|
|
// * technical work of the GEANT4 collaboration. *
|
|
// * By using, copying, modifying or distributing the software (or *
|
|
// * any work based on the software) you agree to acknowledge its *
|
|
// * use in resulting scientific publications, and indicate your *
|
|
// * acceptance of all terms of the Geant4 Software license. *
|
|
// ********************************************************************
|
|
//
|
|
// $Id: G4VMscModel.hh,v 1.10 2010-09-07 16:05:33 vnivanch Exp $
|
|
// GEANT4 tag $Name: not supported by cvs2svn $
|
|
//
|
|
// -------------------------------------------------------------------
|
|
//
|
|
// GEANT4 Class header file
|
|
//
|
|
//
|
|
// File name: G4VMscModel
|
|
//
|
|
// Author: Vladimir Ivanchenko
|
|
//
|
|
// Creation date: 07.03.2008
|
|
//
|
|
// Modifications:
|
|
// 07.04.2009 V.Ivanchenko moved msc methods from G4VEmModel to G4VMscModel
|
|
//
|
|
// Class Description:
|
|
//
|
|
// General interface to msc models
|
|
|
|
// -------------------------------------------------------------------
|
|
//
|
|
|
|
#ifndef G4VMscModel_h
|
|
#define G4VMscModel_h 1
|
|
|
|
#include "G4VEmModel.hh"
|
|
#include "G4MscStepLimitType.hh"
|
|
#include "globals.hh"
|
|
#include "G4ThreeVector.hh"
|
|
#include "G4Track.hh"
|
|
#include "G4SafetyHelper.hh"
|
|
#include "G4VEnergyLossProcess.hh"
|
|
|
|
class G4ParticleChangeForMSC;
|
|
|
|
class G4VMscModel : public G4VEmModel
|
|
{
|
|
|
|
public:
|
|
|
|
G4VMscModel(const G4String& nam);
|
|
|
|
virtual ~G4VMscModel();
|
|
|
|
virtual G4double ComputeTruePathLengthLimit(const G4Track& track,
|
|
G4PhysicsTable*,
|
|
G4double currentMinimalStep);
|
|
|
|
virtual G4double ComputeGeomPathLength(G4double truePathLength);
|
|
|
|
virtual G4double ComputeTrueStepLength(G4double geomPathLength);
|
|
|
|
virtual void SampleScattering(const G4DynamicParticle*,
|
|
G4double safety);
|
|
|
|
// empty
|
|
virtual void SampleSecondaries(std::vector<G4DynamicParticle*>*,
|
|
const G4MaterialCutsCouple*,
|
|
const G4DynamicParticle*,
|
|
G4double tmin,
|
|
G4double tmax);
|
|
|
|
//================================================================
|
|
// Set parameters of multiple scattering models
|
|
//================================================================
|
|
|
|
inline void SetStepLimitType(G4MscStepLimitType);
|
|
|
|
inline void SetLateralDisplasmentFlag(G4bool val);
|
|
|
|
inline void SetRangeFactor(G4double);
|
|
|
|
inline void SetGeomFactor(G4double);
|
|
|
|
inline void SetSkin(G4double);
|
|
|
|
inline void SetSampleZ(G4bool);
|
|
|
|
inline G4VEnergyLossProcess* GetIonisation() const;
|
|
|
|
inline void SetIonisation(G4VEnergyLossProcess*);
|
|
|
|
protected:
|
|
|
|
// initialisation of the ParticleChange for the model
|
|
// initialisation of interface with geometry and ionisation
|
|
G4ParticleChangeForMSC* GetParticleChangeForMSC();
|
|
|
|
// shift point of the track PostStep
|
|
void ComputeDisplacement(G4ParticleChangeForMSC*,
|
|
const G4ThreeVector& displDir,
|
|
G4double displacement,
|
|
G4double postsafety);
|
|
|
|
// compute safety
|
|
inline G4double ComputeSafety(const G4ThreeVector& position, G4double limit);
|
|
|
|
// compute linear distance to a geometry boundary
|
|
inline G4double ComputeGeomLimit(const G4Track& position, G4double& presafety,
|
|
G4double limit);
|
|
|
|
inline G4double GetRange(const G4ParticleDefinition* part,
|
|
G4double kineticEnergy,
|
|
const G4MaterialCutsCouple* couple);
|
|
|
|
inline G4double GetEnergy(const G4ParticleDefinition* part,
|
|
G4double range,
|
|
const G4MaterialCutsCouple* couple);
|
|
|
|
private:
|
|
|
|
// hide assignment operator
|
|
G4VMscModel & operator=(const G4VMscModel &right);
|
|
G4VMscModel(const G4VMscModel&);
|
|
|
|
G4SafetyHelper* safetyHelper;
|
|
G4VEnergyLossProcess* ionisation;
|
|
|
|
G4double dedx;
|
|
G4double localtkin;
|
|
G4double localrange;
|
|
|
|
protected:
|
|
|
|
G4double facrange;
|
|
G4double facgeom;
|
|
G4double facsafety;
|
|
G4double skin;
|
|
G4double dtrl;
|
|
G4double lambdalimit;
|
|
G4double geomMin;
|
|
G4double geomMax;
|
|
|
|
G4MscStepLimitType steppingAlgorithm;
|
|
|
|
G4bool samplez;
|
|
G4bool latDisplasment;
|
|
|
|
};
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
|
|
|
|
inline void G4VMscModel::SetLateralDisplasmentFlag(G4bool val)
|
|
{
|
|
latDisplasment = val;
|
|
}
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
|
|
|
|
inline void G4VMscModel::SetSkin(G4double val)
|
|
{
|
|
skin = val;
|
|
}
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
|
|
|
|
inline void G4VMscModel::SetRangeFactor(G4double val)
|
|
{
|
|
facrange = val;
|
|
}
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
|
|
|
|
inline void G4VMscModel::SetGeomFactor(G4double val)
|
|
{
|
|
facgeom = val;
|
|
}
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
|
|
|
|
inline void G4VMscModel::SetStepLimitType(G4MscStepLimitType val)
|
|
{
|
|
steppingAlgorithm = val;
|
|
}
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
|
|
|
|
inline void G4VMscModel::SetSampleZ(G4bool val)
|
|
{
|
|
samplez = val;
|
|
}
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
|
|
|
|
inline G4double G4VMscModel::ComputeSafety(const G4ThreeVector& position,
|
|
G4double)
|
|
{
|
|
return safetyHelper->ComputeSafety(position);
|
|
}
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
|
|
|
|
inline G4double G4VMscModel::ComputeGeomLimit(const G4Track& track,
|
|
G4double& presafety,
|
|
G4double limit)
|
|
{
|
|
G4double res = geomMax;
|
|
if(track.GetVolume() != safetyHelper->GetWorldVolume()) {
|
|
res = safetyHelper->CheckNextStep(
|
|
track.GetStep()->GetPreStepPoint()->GetPosition(),
|
|
track.GetMomentumDirection(),
|
|
limit, presafety);
|
|
}
|
|
return res;
|
|
}
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
|
|
|
|
inline G4double
|
|
G4VMscModel::GetRange(const G4ParticleDefinition* part,
|
|
G4double kinEnergy, const G4MaterialCutsCouple* couple)
|
|
{
|
|
localrange = DBL_MAX;
|
|
localtkin = kinEnergy;
|
|
if(ionisation) { localrange = ionisation->GetRangeForLoss(localtkin, couple); }
|
|
else {
|
|
G4double q = part->GetPDGCharge()/eplus;
|
|
localrange = kinEnergy/(dedx*q*q*couple->GetMaterial()->GetDensity());
|
|
}
|
|
return localrange;
|
|
}
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
|
|
|
|
inline G4double
|
|
G4VMscModel::GetEnergy(const G4ParticleDefinition* part,
|
|
G4double range, const G4MaterialCutsCouple* couple)
|
|
{
|
|
G4double e = localtkin;
|
|
if(ionisation) { e = ionisation->GetKineticEnergy(range, couple); }
|
|
else {
|
|
G4double q = part->GetPDGCharge()/eplus;
|
|
if(localrange > range) {
|
|
e -= (localrange - range)*dedx*q*q*couple->GetMaterial()->GetDensity();
|
|
}
|
|
}
|
|
if(e < 0.0) { e = 0.0; }
|
|
return e;
|
|
}
|
|
|
|
inline G4VEnergyLossProcess* G4VMscModel::GetIonisation() const
|
|
{
|
|
return ionisation;
|
|
}
|
|
|
|
inline void G4VMscModel::SetIonisation(G4VEnergyLossProcess* p)
|
|
{
|
|
ionisation = p;
|
|
}
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
|
|
|
|
#endif
|
|
|