98 lines
3.5 KiB
C++
98 lines
3.5 KiB
C++
/***************************************************************************
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* musrSim - the program for the simulation of (mainly) muSR instruments. *
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* More info on http://lmu.web.psi.ch/simulation/index.html . *
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* musrSim is based od Geant4 (http://geant4.web.cern.ch/geant4/) *
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* *
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* Copyright (C) 2009 by Paul Scherrer Institut, 5232 Villigen PSI, *
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* Switzerland *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the Free Software *
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. *
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***************************************************************************/
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//$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
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// Muon energy loss in thin C-foil adding a Landau distribution to the energy
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// loss
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// Id : musrMuEnergyLossLandau, v 1.0
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// Author: Thomas Prokscha
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// Date : 2016-08
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//$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
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#ifndef musrMuEnergyLossLandau_h
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#define musrMuEnergyLossLandau_h 1
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#include "G4VDiscreteProcess.hh"
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#include "G4ParticleTable.hh"
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#include <TMath.h>
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#include <TRandom.h>
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/*! musrMuEnergyLossLandau class defines the energy loss given by the Landau distribution,
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in, for example, the thin Carbon foil of the LEM beam line
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*/
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class musrMuEnergyLossLandau : public G4VDiscreteProcess
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{
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public:
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musrMuEnergyLossLandau(const G4String& name = "MuEnergyLossLandau", // process description
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G4ProcessType aType = fElectromagnetic);
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~musrMuEnergyLossLandau();
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//! - Main method. muon energy loss process is executed at the END of a step. */
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G4VParticleChange* PostStepDoIt(
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const G4Track&,
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const G4Step&);
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G4double GetMeanFreePath(const G4Track& aTrack,
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G4double previousStepSize,
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G4ForceCondition* condition);
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//! Condition for process application (step Object).
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G4bool CheckCondition(const G4Step& aStep);
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//! Condition for process application (step Pointer).
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G4bool CheckCondition(const G4Step* aStep);
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G4String p_name;
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G4bool condition;
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void GetFinalEnergy( const G4Step* aStep);
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TRandom *random;
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static double landauMPV;
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static double landauSigma;
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// model parameters
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G4ParticleTable* particleTable;
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G4ParticleDefinition* particle;
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G4double rnd;
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G4DynamicParticle *DP;
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//! The particle change object.
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G4VParticleChange fParticleChange;
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void PrepareSecondary(const G4Track&);
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G4Track* aSecondary;
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void InitializeSecondaries(const G4Track&);
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};
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#endif
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