Gabriele Cosmo
164 lines
5.7 KiB
C++
Executable File
164 lines
5.7 KiB
C++
Executable File
//
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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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// $Id$
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//
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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: G4GoudsmitSaundersonMscModel
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//
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// Author: Omrane Kadri
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//
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// Creation date: 20.02.2009
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//
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// Modifications:
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// 04.03.2009 V.Ivanchenko cleanup and format according to Geant4 EM style
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// 12.05.2010 O.Kadri: adding Qn1 and Qn12 as private doubles
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//
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// Class description:
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//
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// Multiple scattering model using classical Goudsmit-Saunderson model
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//
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//@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
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//REFERENCES:
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//Ref.1:E. Benedito et al.,"Mixed simulation ... cross-sections", NIMB 174 (2001) pp 91-110;
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//Ref.2:I. Kawrakow et al.,"On the condensed ... transport",NIMB 142 (1998) pp 253-280;
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//Ref.3:I. Kawrakow et al.,"On the representation ... calculations",NIMB 134 (1998) pp 325-336;
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//Ref.4:I. Kawrakow et al.,"The EGSnrc code ... Transport",NRCC Report PIRS-701, Sept. 21, 2006;
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//Ref.5:F. Salvat et al.,"ELSEPA--Dirac partial ...molecules", Comp. Phys. Comm. 165 (2005) pp 157-190;
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//Ref.6:G4UrbanMscModel G4_v9.1Ref09;
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//Ref.7:G4WentzelVIModel G4_v9.3.
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//@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
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#ifndef G4GoudsmitSaundersonMscModel_h
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#define G4GoudsmitSaundersonMscModel_h 1
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#include <CLHEP/Units/SystemOfUnits.h>
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#include "G4VMscModel.hh"
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#include "G4PhysicsTable.hh"
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#include "globals.hh"
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class G4DataVector;
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class G4ParticleChangeForMSC;
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class G4LossTableManager;
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class G4GoudsmitSaundersonTable;
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class G4GoudsmitSaundersonMscModel : public G4VMscModel
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{
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public:
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G4GoudsmitSaundersonMscModel(const G4String& nam = "GoudsmitSaunderson");
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virtual ~G4GoudsmitSaundersonMscModel();
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virtual void Initialise(const G4ParticleDefinition*, const G4DataVector&);
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void StartTracking(G4Track*);
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virtual G4double ComputeCrossSectionPerAtom(const G4ParticleDefinition* particle,
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G4double KineticEnergy,
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G4double AtomicNumber, G4double,
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G4double, G4double);
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virtual G4ThreeVector& SampleScattering(const G4DynamicParticle*,
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G4double safety);
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virtual G4double ComputeTruePathLengthLimit(const G4Track& track,
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G4double& currentMinimalStep);
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virtual G4double ComputeGeomPathLength(G4double truePathLength);
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virtual G4double ComputeTrueStepLength(G4double geomStepLength);
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private:
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void SampleCosineTheta(G4double,G4double,G4double &,G4double &);
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void CalculateIntegrals(const G4ParticleDefinition* ,G4double,G4double,
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G4double&,G4double&);
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void LoadELSEPAXSections();
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inline void SetParticle(const G4ParticleDefinition* p);
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inline G4double GetLambda(G4double);
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// hide assignment operator
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G4GoudsmitSaundersonMscModel & operator=(const G4GoudsmitSaundersonMscModel &right);
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G4GoudsmitSaundersonMscModel(const G4GoudsmitSaundersonMscModel&);
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G4double lowKEnergy;
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G4double highKEnergy;
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G4double currentKinEnergy;
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G4double currentRange;
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G4double smallstep,tlimitminfix,skindepth;
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G4double fr,rangeinit,masslimite,tgeom;
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G4double par1,par2,par3,zPathLength,truePathLength;
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G4double tausmall,taulim,tlimit,tlimitmin,geommin,geombig;
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G4double charge,lambdalimit;
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G4double tPathLength,stepmin ;
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G4double lambda0,lambda1,lambda11;
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G4double mass;
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G4int currentMaterialIndex;
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G4bool firstStep;
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G4bool inside;
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G4bool insideskin;
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G4GoudsmitSaundersonTable* GSTable;
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G4LossTableManager* theManager;
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const G4ParticleDefinition* particle;
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G4ParticleChangeForMSC* fParticleChange;
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const G4MaterialCutsCouple* currentCouple;
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static G4double ener[106];
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static G4double TCSE[103][106];
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static G4double FTCSE[103][106];
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static G4double TCSP[103][106];
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static G4double FTCSP[103][106];
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};
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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inline
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void G4GoudsmitSaundersonMscModel::SetParticle(const G4ParticleDefinition* p)
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{
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if (p != particle) {
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particle = p;
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mass = p->GetPDGMass();
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charge = p->GetPDGCharge()/CLHEP::eplus;
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}
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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#endif
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