Gabriele Cosmo
182 lines
5.9 KiB
C++
182 lines
5.9 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. *
|
|
// ********************************************************************
|
|
//
|
|
//
|
|
// -------------------------------------------------------------------
|
|
//
|
|
// GEANT4 Class header file
|
|
//
|
|
//
|
|
// File name: G4MuBremsstrahlungModel
|
|
//
|
|
// Author: Vladimir Ivanchenko on base of Laszlo Urban code
|
|
//
|
|
// Creation date: 18.05.2002
|
|
//
|
|
// Modifications:
|
|
//
|
|
// 23-12-02 Change interface in order to move to cut per region (V.Ivanchenko)
|
|
// 27-01-03 Make models region aware (V.Ivanchenko)
|
|
// 13-02-03 Add name (V.Ivanchenko)
|
|
// 10-02-04 Add lowestKinEnergy (V.Ivanchenko)
|
|
// 08-04-05 Major optimisation of internal interfaces (V.Ivantchenko)
|
|
// 13-02-06 Add ComputeCrossSectionPerAtom (mma)
|
|
// 11-10-07 Add ignoreCut flag (V.Ivanchenko)
|
|
// 28-02-08 Reorganized protected methods and members (V.Ivanchenko)
|
|
// 06-03-08 Remove obsolete methods and members (V.Ivanchenko)
|
|
// 31-05-13 Use element selectors instead of local data (V.Ivanchenko)
|
|
//
|
|
// Class Description:
|
|
//
|
|
// Implementation of bremssrahlung by muons
|
|
// A.G. Bogdanov et al., IEEE Trans. Nuc. Sci., Vol.53, No.2, 2006
|
|
//
|
|
// -------------------------------------------------------------------
|
|
//
|
|
|
|
#ifndef G4MuBremsstrahlungModel_h
|
|
#define G4MuBremsstrahlungModel_h 1
|
|
|
|
#include <CLHEP/Units/PhysicalConstants.h>
|
|
|
|
#include "G4VEmModel.hh"
|
|
#include "G4NistManager.hh"
|
|
|
|
class G4Element;
|
|
class G4ParticleChangeForLoss;
|
|
|
|
class G4MuBremsstrahlungModel : public G4VEmModel
|
|
{
|
|
|
|
public:
|
|
|
|
explicit G4MuBremsstrahlungModel(const G4ParticleDefinition* p = nullptr,
|
|
const G4String& nam = "MuBrem");
|
|
|
|
~G4MuBremsstrahlungModel() = default;
|
|
|
|
virtual void Initialise(const G4ParticleDefinition*,
|
|
const G4DataVector&) override;
|
|
|
|
virtual void InitialiseLocal(const G4ParticleDefinition*,
|
|
G4VEmModel* masterModel) override;
|
|
|
|
virtual G4double MinEnergyCut(const G4ParticleDefinition*,
|
|
const G4MaterialCutsCouple*) override;
|
|
|
|
virtual G4double ComputeCrossSectionPerAtom(
|
|
const G4ParticleDefinition*,
|
|
G4double kineticEnergy,
|
|
G4double Z, G4double A,
|
|
G4double cutEnergy,
|
|
G4double maxEnergy) override;
|
|
|
|
virtual G4double ComputeDEDXPerVolume(const G4Material*,
|
|
const G4ParticleDefinition*,
|
|
G4double kineticEnergy,
|
|
G4double cutEnergy) override;
|
|
|
|
virtual void SampleSecondaries(std::vector<G4DynamicParticle*>*,
|
|
const G4MaterialCutsCouple*,
|
|
const G4DynamicParticle*,
|
|
G4double tmin,
|
|
G4double maxEnergy) override;
|
|
|
|
inline void SetLowestKineticEnergy(G4double e);
|
|
|
|
virtual G4double MinPrimaryEnergy(const G4Material*,
|
|
const G4ParticleDefinition*,
|
|
G4double) override;
|
|
|
|
// hide assignment operator
|
|
G4MuBremsstrahlungModel &
|
|
operator=(const G4MuBremsstrahlungModel &right) = delete;
|
|
G4MuBremsstrahlungModel(const G4MuBremsstrahlungModel&) = delete;
|
|
|
|
protected:
|
|
|
|
G4double ComputMuBremLoss(G4double Z, G4double tkin, G4double cut);
|
|
|
|
G4double ComputeMicroscopicCrossSection(G4double tkin,
|
|
G4double Z,
|
|
G4double cut);
|
|
|
|
virtual G4double ComputeDMicroscopicCrossSection(G4double tkin,
|
|
G4double Z,
|
|
G4double gammaEnergy);
|
|
|
|
inline void SetParticle(const G4ParticleDefinition*);
|
|
|
|
protected:
|
|
|
|
const G4ParticleDefinition* particle;
|
|
G4NistManager* nist;
|
|
G4double mass;
|
|
G4double rmass;
|
|
G4double cc;
|
|
G4double coeff;
|
|
G4double sqrte;
|
|
G4double bh;
|
|
G4double bh1;
|
|
G4double btf;
|
|
G4double btf1;
|
|
|
|
G4ParticleDefinition* theGamma;
|
|
G4ParticleChangeForLoss* fParticleChange;
|
|
|
|
G4double lowestKinEnergy;
|
|
G4double minThreshold;
|
|
|
|
static const G4double xgi[6];
|
|
static const G4double wgi[6];
|
|
|
|
static G4double fDN[93];
|
|
};
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
|
|
|
|
inline void G4MuBremsstrahlungModel::SetLowestKineticEnergy(G4double e)
|
|
{
|
|
lowestKinEnergy = e;
|
|
}
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
|
|
|
|
inline
|
|
void G4MuBremsstrahlungModel::SetParticle(const G4ParticleDefinition* p)
|
|
{
|
|
if(!particle) {
|
|
particle = p;
|
|
mass = particle->GetPDGMass();
|
|
rmass=mass/CLHEP::electron_mass_c2 ;
|
|
cc=CLHEP::classic_electr_radius/rmass ;
|
|
coeff= 16.*CLHEP::fine_structure_const*cc*cc/3. ;
|
|
}
|
|
}
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
|
|
|
|
#endif
|