Gabriele Cosmo
229 lines
6.8 KiB
C++
229 lines
6.8 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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// G4ElasticHadrNucleusHe.hh
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// The generator of high energy hadron-nucleus elastic scattering
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// The hadron kinetic energy T > 1 GeV
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// N.Starkov 2003.
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//
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// 19.11.05 The HE elastic scattering on proton is added (N.Starkov)
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// 16.11.06 General redesign (N.Starkov)
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// 23.11.06 General cleanup, ONQ0=3 (V.Ivanchenko)
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// 15.05.07 Redesign and cleanup (V.Ivanchenko)
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// 18.05.07 Cleanup (V.Grichine)
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// 19.04.12 Fixed reproducibility violation (A.Ribon)
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// 12.06.12 Fixed warnings of shadowed variables (A.Ribon)
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//
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#ifndef G4ElasticHadrNucleusHE_h
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#define G4ElasticHadrNucleusHE_h 1
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#include <vector>
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#include <iostream>
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#include <fstream>
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#include "globals.hh"
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#include "G4ParticleDefinition.hh"
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#include "G4ParticleChange.hh"
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#include "G4Nucleus.hh"
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#include "G4HadronElastic.hh"
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#include "G4Threading.hh"
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class G4NistManager;
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static const G4int NHADRONS = 26; // Number of allowed hadrons
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static const G4int ONQ2 = 102; // Number of points on Q2
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static const G4int NENERGY = 24;
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static const G4int ZMAX = 93;
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///////////////////////////////////////////////////////////////////////
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class G4ElasticData
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{
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friend class G4ElasticHadrNucleusHE;
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public:
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G4ElasticData(const G4ParticleDefinition* h, G4int Z, G4int A,
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const G4double* e);
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~G4ElasticData() {}
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private:
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void DefineNucleusParameters(G4int A);
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// hide assignment operator
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G4ElasticData & operator=(const G4ElasticData &right);
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G4ElasticData(const G4ElasticData&);
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G4double R1, R2, Pnucl, Aeff;
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G4double dQ2;
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G4double massA;
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G4double massA2;
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G4double maxQ2[NENERGY];
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std::vector<G4double> fCumProb[NENERGY];
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};
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/////////////////////////////////////////////////////////////////////
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class G4ElasticHadrNucleusHE : public G4HadronElastic
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{
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public:
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explicit G4ElasticHadrNucleusHE(const G4String& name = "hElasticGlauber");
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~G4ElasticHadrNucleusHE() override;
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G4double SampleInvariantT(const G4ParticleDefinition* p, G4double plab,
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G4int Z, G4int A) override;
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void InitialiseModel() override;
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void ModelDescription(std::ostream&) const override;
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private:
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G4double HadronNucleusQ2_2(const G4ElasticData *pElD, G4double plabGeV,
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G4double tmax);
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void DefineHadronValues(G4int Z);
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G4int FillFq2(G4int A);
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G4double GetLightFq2(G4int Z, G4int A, G4double Q);
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G4double GetQ2_2(G4int N, G4int Nmax,
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const std::vector<G4double>& F, G4double rand);
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G4double HadrNucDifferCrSec(G4int A, G4double Q2);
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void InterpolateHN(G4int n, const G4double EnP[],
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const G4double C0P[], const G4double C1P[],
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const G4double B0P[], const G4double B1P[]);
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G4double GetFt(G4double Q2);
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G4double HadronProtonQ2(G4double plab, G4double tmax);
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void Binom();
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void FillData(const G4ParticleDefinition* p, G4int idx, G4int Z);
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void InFileName(std::ostringstream&, const G4ParticleDefinition* p, G4int Z);
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void OutFileName(std::ostringstream&, const G4ParticleDefinition* p, G4int Z);
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G4bool ReadLine(std::ifstream&, std::vector<G4double>&);
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void WriteLine(std::ofstream&, std::vector<G4double>&);
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inline G4double LineInterpol(G4double p0, G4double p2,
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G4double c1, G4double c2, G4double p);
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inline G4double GetBinomCof( G4int n, G4int m );
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// hide assignment operator
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G4ElasticHadrNucleusHE & operator=(const G4ElasticHadrNucleusHE &right);
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G4ElasticHadrNucleusHE(const G4ElasticHadrNucleusHE&);
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// fields
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G4int iHadrCode;
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G4int iHadron;
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G4int iHadron1;
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static const G4int fHadronCode[NHADRONS];
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static const G4int fHadronType[NHADRONS];
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static const G4int fHadronType1[NHADRONS];
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static G4bool fStoreToFile;
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static G4bool fRetrieveFromFile;
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// momemtum limits
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G4double ekinLowLimit;
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G4double dQ2;
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// projectile kinematics in GeV
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G4double hMass;
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G4double hMass2;
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G4double hLabMomentum;
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G4double hLabMomentum2;
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G4double HadrEnergy;
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// elastic parameters
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G4double HadrTot, HadrSlope, HadrReIm, TotP;
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G4double DDSect2, DDSect3, ConstU;
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// momentum limits for different models of hadron/nucleon scatetring
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G4double BoundaryP[7], BoundaryTL[7], BoundaryTG[7];
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// parameterisation of scattering
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G4double Slope1, Slope2, Coeff1, Coeff2;
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G4double Slope0, Coeff0;
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G4double aAIm, aDIm, Dtot11;
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// nucleaus parameters
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G4double R1, R2, Pnucl, Aeff, Q2max;
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static G4double fLineF[ONQ2];
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static G4double fEnergy[NENERGY];
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static G4double fLowEdgeEnergy[NENERGY];
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static G4double fBinom[240][240];
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static G4ElasticData* fElasticData[NHADRONS][ZMAX];
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G4NistManager* nistManager;
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const char* fDirectory;
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G4bool isMaster;
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#ifdef G4MULTITHREADED
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static G4Mutex elasticMutex;
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#endif
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};
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////////////////////////////////////////////////////////////////
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inline
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G4double G4ElasticHadrNucleusHE::LineInterpol(G4double p1, G4double p2,
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G4double c1, G4double c2,
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G4double p)
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{
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return c1+(p-p1)*(c2-c1)/(p2-p1);
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}
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////////////////////////////////////////////////////////////////
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inline
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G4double G4ElasticHadrNucleusHE::GetBinomCof(G4int numN, G4int numM)
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{
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return (numN >= numM && numN < 240) ? fBinom[numN][numM] : 0.0;
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}
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////////////////////////////////////////////////////////////////
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#endif
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