Gabriele Cosmo
150 lines
5.0 KiB
C++
150 lines
5.0 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: G4mplIonisationModel.hh,v 1.6 2007/11/13 18:36:29 vnivanch Exp $
|
|
// GEANT4 tag $Name: geant4-09-01 $
|
|
//
|
|
// -------------------------------------------------------------------
|
|
//
|
|
// GEANT4 Class header file
|
|
//
|
|
//
|
|
// File name: G4mplIonisationModel
|
|
//
|
|
// Author: Vladimir Ivanchenko
|
|
//
|
|
// Creation date: 06.09.2005
|
|
//
|
|
// Modifications:
|
|
// 12.08.2007 ComputeDEDXAhlen function added (M. Vladymyrov)
|
|
//
|
|
// Class Description:
|
|
//
|
|
// Implementation of model of energy loss of the magnetic monopole
|
|
|
|
// -------------------------------------------------------------------
|
|
//
|
|
|
|
#ifndef G4mplIonisationModel_h
|
|
#define G4mplIonisationModel_h 1
|
|
|
|
#include "G4VEmModel.hh"
|
|
#include "G4VEmFluctuationModel.hh"
|
|
|
|
class G4ParticleChangeForLoss;
|
|
|
|
class G4mplIonisationModel : public G4VEmModel, public G4VEmFluctuationModel
|
|
{
|
|
|
|
public:
|
|
|
|
G4mplIonisationModel(G4double mCharge, const G4String& nam = "mplIonisation");
|
|
|
|
virtual ~G4mplIonisationModel();
|
|
|
|
virtual void Initialise(const G4ParticleDefinition*, const G4DataVector&);
|
|
|
|
virtual G4double ComputeDEDXPerVolume(const G4Material*,
|
|
const G4ParticleDefinition*,
|
|
G4double kineticEnergy,
|
|
G4double cutEnergy);
|
|
|
|
virtual void SampleSecondaries(std::vector<G4DynamicParticle*>*,
|
|
const G4MaterialCutsCouple*,
|
|
const G4DynamicParticle*,
|
|
G4double tmin,
|
|
G4double maxEnergy);
|
|
|
|
|
|
virtual G4double SampleFluctuations(const G4Material*,
|
|
const G4DynamicParticle*,
|
|
G4double& tmax,
|
|
G4double& length,
|
|
G4double& meanLoss);
|
|
|
|
virtual G4double Dispersion(const G4Material*,
|
|
const G4DynamicParticle*,
|
|
G4double& tmax,
|
|
G4double& length);
|
|
|
|
private:
|
|
|
|
void SetParticle(const G4ParticleDefinition* p);
|
|
G4double ComputeDEDXAhlen(const G4Material* material, G4double bg2);
|
|
|
|
// hide assignment operator
|
|
G4mplIonisationModel & operator=(const G4mplIonisationModel &right);
|
|
G4mplIonisationModel(const G4mplIonisationModel&);
|
|
|
|
const G4ParticleDefinition* monopole;
|
|
G4ParticleChangeForLoss* fParticleChange;
|
|
|
|
G4double mass;
|
|
G4double magCharge;
|
|
G4double twoln10;
|
|
G4double betalow;
|
|
G4double betalim;
|
|
G4double beta2lim;
|
|
G4double bg2lim;
|
|
G4double factlow;
|
|
G4double chargeSquare;
|
|
G4double dedxlim;
|
|
G4int nmpl;
|
|
G4double pi_hbarc2_over_mc2;
|
|
G4double approxConst;
|
|
};
|
|
|
|
#endif
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
|
|
|
|
inline void G4mplIonisationModel::SampleSecondaries(std::vector<G4DynamicParticle*>*,
|
|
const G4MaterialCutsCouple*,
|
|
const G4DynamicParticle*,
|
|
G4double,
|
|
G4double)
|
|
{}
|
|
|
|
inline G4double G4mplIonisationModel::Dispersion(
|
|
const G4Material* material,
|
|
const G4DynamicParticle* dp,
|
|
G4double& tmax,
|
|
G4double& length)
|
|
{
|
|
G4double siga = 0.0;
|
|
G4double tau = dp->GetKineticEnergy()/mass;
|
|
if(tau > 0.0) {
|
|
G4double electronDensity = material->GetElectronDensity();
|
|
G4double gam = tau + 1.0;
|
|
G4double invbeta2 = (gam*gam)/(tau * (tau+2.0));
|
|
siga = (invbeta2 - 0.5) * twopi_mc2_rcl2 * tmax * length
|
|
* electronDensity * chargeSquare;
|
|
}
|
|
return siga;
|
|
}
|
|
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
|