Gabriele Cosmo
207 lines
6.2 KiB
C++
207 lines
6.2 KiB
C++
//
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// ********************************************************************
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// * DISCLAIMER *
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// * *
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// * The following disclaimer summarizes all the specific disclaimers *
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// * of contributors to this software. The specific disclaimers,which *
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// * govern, are listed with their locations in: *
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// * http://cern.ch/geant4/license *
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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. *
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// * *
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// * This code implementation is the intellectual property of the *
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// * GEANT4 collaboration. *
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// * By copying, distributing or modifying the Program (or any work *
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// * based on the Program) you indicate your acceptance of this *
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// * statement, and all its terms. *
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// ********************************************************************
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//
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//
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// GEANT4 tag $Name: gcross-V05-02-01 $
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//
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//
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// GEANT4 Hadron physics class -- header file
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// F.W. Jones, TRIUMF, 03-DEC-96
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//
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// This class encapsulates cross section data and interpolations
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// from the Geant3/Gheisha routine GHESIG.
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// For further comments see G4HadronCrossSections.cc.
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//
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// Note: this is implemented as a SINGLETON class
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//
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// 27-MAR-97 FWJ: first version for Alpha release
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// 14-APR-97 FWJ: class name changed from G4LCrossSectionData
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// to G4HadronicCrossSections
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// 14-APR-98 FWJ: rewritten as class G4HadronCrossSections
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// and adapted to G4CrossSectionDataSet/DataStore class design.
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// 26-JUN-98 FWJ: added elastic/inelastic caching to improve performance.
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// 06-NOV-98 FWJ: added first-order correction for low-energy
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// inelastic cross sections
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//
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#ifndef G4HadronCrossSections_h
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#define G4HadronCrossSections_h 1
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#include "globals.hh"
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#include "G4Element.hh"
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#include "G4VProcess.hh"
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#include "G4DynamicParticle.hh"
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//#include "G4ParticleTypes.hh"
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#include "G4PionPlus.hh"
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#include "G4PionZero.hh"
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#include "G4PionMinus.hh"
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#include "G4KaonPlus.hh"
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#include "G4KaonZeroShort.hh"
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#include "G4KaonZeroLong.hh"
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#include "G4KaonMinus.hh"
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#include "G4Proton.hh"
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#include "G4AntiProton.hh"
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#include "G4Neutron.hh"
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#include "G4Deuteron.hh"
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#include "G4Triton.hh"
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#include "G4Alpha.hh"
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#include "G4AntiNeutron.hh"
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#include "G4Lambda.hh"
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#include "G4AntiLambda.hh"
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#include "G4SigmaPlus.hh"
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#include "G4SigmaZero.hh"
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#include "G4SigmaMinus.hh"
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#include "G4AntiSigmaPlus.hh"
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#include "G4AntiSigmaZero.hh"
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#include "G4AntiSigmaMinus.hh"
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#include "G4XiZero.hh"
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#include "G4XiMinus.hh"
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#include "G4AntiXiZero.hh"
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#include "G4AntiXiMinus.hh"
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#include "G4OmegaMinus.hh"
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#include "G4AntiOmegaMinus.hh"
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//#include "G4LPhysicsFreeVector.hh"
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enum { TSIZE=41, PSIZE=35, NELAB=17, NCNLW=15, NFISS=21 };
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class G4HadronCrossSections
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{
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public:
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G4HadronCrossSections() : prevParticleDefinition(0), verboseLevel(0)
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{
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}
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~G4HadronCrossSections()
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{
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}
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static G4HadronCrossSections* Instance()
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{
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if (!theInstance) theInstance = new G4HadronCrossSections();
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return theInstance;
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}
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G4bool IsApplicable(const G4DynamicParticle* aParticle,
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const G4Element* )
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{
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return (GetParticleCode(aParticle) > 0);
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}
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G4double GetElasticCrossSection(const G4DynamicParticle* aParticle,
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const G4Element* anElement)
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{
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if (aParticle->GetDefinition() != prevParticleDefinition ||
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anElement != prevElement ||
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aParticle->GetKineticEnergy() != prevKineticEnergy)
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CalcScatteringCrossSections(aParticle, anElement);
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return sigelastic;
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}
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G4double GetInelasticCrossSection(const G4DynamicParticle* aParticle,
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const G4Element* anElement)
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{
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if (aParticle->GetDefinition() != prevParticleDefinition ||
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anElement != prevElement ||
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aParticle->GetKineticEnergy() != prevKineticEnergy)
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CalcScatteringCrossSections(aParticle, anElement);
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return siginelastic;
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}
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G4double GetCaptureCrossSection(const G4DynamicParticle*,
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const G4Element*);
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G4double GetFissionCrossSection(const G4DynamicParticle*,
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const G4Element*);
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static void SetCorrectInelasticNearZero(G4bool value)
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{
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correctInelasticNearZero = value;
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}
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static G4bool GetCorrectInelasticNearZero()
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{
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return correctInelasticNearZero;
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}
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void SetVerboseLevel(G4int value)
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{
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verboseLevel = value;
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}
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G4int GetVerboseLevel()
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{
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return verboseLevel;
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}
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private:
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G4int GetParticleCode(const G4DynamicParticle*);
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void CalcScatteringCrossSections(const G4DynamicParticle*,
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const G4Element*);
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static G4HadronCrossSections* theInstance;
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G4double sigelastic, siginelastic;
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G4ParticleDefinition* prevParticleDefinition;
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G4Element* prevElement;
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G4double prevKineticEnergy;
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static G4bool correctInelasticNearZero;
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G4int verboseLevel;
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// The following arrays are declared static to allow the use of initializers.
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// They are initialized in G4HadronCrossSections.cc, thus providing some
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// data hiding.
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static G4float plab[TSIZE];
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static G4float csel[PSIZE][TSIZE];
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static G4float csin[PSIZE][TSIZE];
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static G4float cspiel[3][TSIZE];
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static G4float cspiin[3][TSIZE];
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static G4float cspnel[3][TSIZE];
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static G4float cspnin[3][TSIZE];
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static G4float elab[NELAB];
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static G4float cnlwat[NCNLW], cnlwel[NCNLW][NELAB], cnlwin[NCNLW][NELAB];
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static G4float cscap[100];
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static G4float ekfiss[NFISS], csfiss[4][NFISS];
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static G4float alpha[PSIZE], alphac[TSIZE];
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static G4float partel[35], partin[35];
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static G4int icorr[35], intrc[35];
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static G4float csa[4];
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static G4int ipart2[7];
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};
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#endif
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