Gabriele Cosmo
150 lines
5.4 KiB
C++
150 lines
5.4 KiB
C++
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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// $Id: G4MuIonisation.hh,v 1.30 2007/05/23 08:49:32 vnivanch Exp $
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// GEANT4 tag $Name: geant4-09-01 $
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//
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// -------------------------------------------------------------------
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//
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// GEANT4 Class header file
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//
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//
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// File name: G4MuIonisation
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//
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// Author: Laszlo Urban
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//
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// Creation date: 30.05.1997
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//
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// Modifications:
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//
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// corrected by L.Urban on 24/09/97
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// corrected by L.Urban on 13/01/98
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// bugs fixed by L.Urban on 02/02/99
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// 10/02/00 modifications , new e.m. structure, L.Urban
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// 10-08-01 new methods Store/Retrieve PhysicsTable (mma)
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// 14-08-01 new function ComputeRestrictedMeandEdx() + 'cleanup' (mma)
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// 19-09-01 come back to previous process name "hIoni"
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// 29-10-01 all static functions no more inlined
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// 10-05-02 V.Ivanchenko update to new design
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// 09-12-02 V.Ivanchenko remove warning
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// 26-12-02 Secondary production moved to derived classes (VI)
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// 24-01-03 Make models region aware (V.Ivanchenko)
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// 05-02-03 Fix compilation warnings (V.Ivanchenko)
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// 13-02-03 SubCutoff regime is assigned to a region (V.Ivanchenko)
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// 23-05-03 Add fluctuation model as a member function (V.Ivanchenko)
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// 03-06-03 Add SetIntegral method to choose fluctuation model (V.Ivanchenko)
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// 03-06-03 Fix initialisation problem for STD ionisation (V.Ivanchenko)
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// 08-08-03 STD substitute standard (V.Ivanchenko)
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// 12-11-03 G4EnergyLossSTD -> G4EnergyLossProcess (V.Ivanchenko)
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// 21-01-04 Migrade to G4ParticleChangeForLoss (V.Ivanchenko)
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// 17-08-04 Rename the process "Mu" -> "mu" (V.Ivanchenko)
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// 08-11-04 Migration to new interface of Store/Retrieve tables (V.Ivantchenko)
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// 08-04-05 Major optimisation of internal interfaces (V.Ivantchenko)
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//
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// Class Description:
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//
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// This class manages the ionisation process for muons.
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// it inherites from G4VContinuousDiscreteProcess via G4VEnergyLossProcess.
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//
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// -------------------------------------------------------------------
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//
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#ifndef G4MuIonisation_h
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#define G4MuIonisation_h 1
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#include "G4VEnergyLossProcess.hh"
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#include "G4Electron.hh"
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#include "G4Positron.hh"
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#include "globals.hh"
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#include "G4VEmModel.hh"
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class G4Material;
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class G4VEmFluctuationModel;
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class G4ParticleChangeForLoss;
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class G4MuIonisation : public G4VEnergyLossProcess
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{
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public:
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G4MuIonisation(const G4String& name = "muIoni");
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virtual ~G4MuIonisation();
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G4bool IsApplicable(const G4ParticleDefinition& p);
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G4double MinPrimaryEnergy(const G4ParticleDefinition* p,
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const G4Material*, G4double cut);
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// Print out of the class parameters
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void PrintInfo();
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protected:
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virtual void InitialiseEnergyLossProcess(const G4ParticleDefinition*,
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const G4ParticleDefinition*);
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private:
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// hide assignment operator
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G4MuIonisation & operator=(const G4MuIonisation &right);
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G4MuIonisation(const G4MuIonisation&);
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G4double mass;
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G4double ratio;
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const G4ParticleDefinition* theParticle;
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const G4ParticleDefinition* theBaseParticle;
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G4VEmFluctuationModel* flucModel;
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G4ParticleChangeForLoss* fParticleChange;
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G4bool isInitialised;
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};
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline G4bool G4MuIonisation::IsApplicable(const G4ParticleDefinition& p)
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{
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return (p.GetPDGCharge() != 0.0 && p.GetPDGMass() > 10.0*MeV);
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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inline G4double G4MuIonisation::MinPrimaryEnergy(const G4ParticleDefinition*,
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const G4Material*,
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G4double cut)
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{
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G4double x = 0.5*cut/electron_mass_c2;
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G4double g = x*ratio + std::sqrt((1. + x)*(1. + x*ratio*ratio));
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return mass*(g - 1.0);
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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#endif
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