Gabriele Cosmo
277 lines
7.9 KiB
C++
277 lines
7.9 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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//
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// $Id: G4ElasticHadrNucleusHE.hh,v 1.43 2007/11/13 17:22:51 vnivanch Exp $
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// GEANT4 tag $Name: geant4-09-01 $
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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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// 19.05.04 Variant for G4 6.1: The 'ApplyYourself' was changed
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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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//
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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 "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 "G4HadronicInteraction.hh"
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class G4NistManager;
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static const G4int NHADRONS = 26; // Number of hadrons for which model is applied
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static const G4int ONQ0 = 5; // The initial number of steps on Q2
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static const G4int ONQ2 = 100; // The total number of steps on Q2
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static const G4int NENERGY = 30;
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static const G4int NQTABLE = NENERGY*ONQ2;
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///////////////////////////////////////////////////////////////////////
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//
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//
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class G4ElasticData
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{
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public:
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G4ElasticData(const G4ParticleDefinition* h,
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G4int Z, G4double A, G4double* eGeV);
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~G4ElasticData(){}
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const G4ParticleDefinition* Hadron() {return hadr;}
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private:
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void DefineNucleusParameters(G4double A);
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const G4ParticleDefinition* hadr;
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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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public:
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G4int AtomicWeight;
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G4double R1, R2, Pnucl, Aeff;
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G4double limitQ2;
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G4double massGeV;
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G4double mass2GeV2;
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G4double massA;
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G4double massA2;
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G4int dnkE[NENERGY];
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G4double maxQ2[NENERGY];
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G4double CrossSecMaxQ2[NENERGY];
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G4double TableQ2[ONQ2];
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G4double TableCrossSec[NQTABLE];
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};
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/////////////////////////////////////////////////////////////////////
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//
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//
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class G4ElasticHadrNucleusHE : public G4HadronicInteraction
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{
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public:
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G4ElasticHadrNucleusHE();
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virtual ~G4ElasticHadrNucleusHE();
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G4HadFinalState * ApplyYourself(const G4HadProjectile& aTrack,
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G4Nucleus& G4Nucleus);
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G4double SampleT(const G4ParticleDefinition* p, G4double plab,
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G4int Z, G4int A);
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G4double HadronNucleusQ2_2(G4ElasticData * pElD, G4int Z,
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G4double plabGeV, G4double tmax);
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void DefineHadronValues(G4int Z);
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G4double GetLightFq2(G4int Z, G4int A, G4double Q);
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G4double GetHeavyFq2(G4int Nucleus, G4double *LineFq2);
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G4double GetQ2_2(G4int N, G4double * Q,
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G4double * F, G4double R);
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G4double LineInterpol(G4double p0, G4double p2,
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G4double c1, G4double c2,
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G4double p);
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G4double HadrNucDifferCrSec(G4int Nucleus, 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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// hide assignment operator
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G4ElasticHadrNucleusHE & operator=(const G4ElasticHadrNucleusHE &right);
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G4ElasticHadrNucleusHE(const G4ElasticHadrNucleusHE&);
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G4double GetBinomCof( G4int n, G4int m );
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G4double GetFt(G4double Q2);
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G4double GetDistrFun(G4double Q2);
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G4double GetQ2(G4double Ran);
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G4double HadronProtonQ2(const G4ParticleDefinition * aHadron,
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G4double inLabMom);
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void GetKinematics(const G4ParticleDefinition * aHadron,
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G4double MomentumH);
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public:
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// G4double R1, R2, Pnucl, Aeff, HadrTot1, HadrSlope1, HadrReIm1, Tott1;
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private:
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void Binom();
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// fields
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G4int iHadrCode;
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G4int iHadron;
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G4int HadronCode[NHADRONS];
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G4int HadronType[NHADRONS];
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G4int HadronType1[NHADRONS];
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// protection energy and momemtum
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G4double lowestEnergyLimit;
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G4double plabLowLimit;
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G4double dQ2;
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// transition between internal and CLHEP units
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G4double MbToGeV2;
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G4double sqMbToGeV;
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G4double Fm2ToGeV2;
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G4double GeV2;
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G4double protonM; // GeV
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G4double protonM2; // GeV^2
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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 MomentumCM;
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G4double HadrEnergy;
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// nucleaus parameters
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G4double R1, R2, Pnucl, Aeff;
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G4int NumbN;
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// elastic parameters
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G4double HadrTot, HadrSlope, HadrReIm, TotP,
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DDSect2, DDSect3, ConstU, FmaxT;
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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, MaxTR;
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G4double Slope0, Coeff0;
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G4double aAIm, aDIm, Dtot11;
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G4double Energy[NENERGY];
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G4double LowEdgeEnergy[NENERGY];
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G4double SetBinom[240][240];
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G4ElasticData* SetOfElasticData[NHADRONS][93];
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G4NistManager* nistManager;
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}; // The end of the class description
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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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// G4cout<<" LineInterpol: p1 p2 c1 c2 "<<p1<<" "<<p2<<" "
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// <<c1<<" "<<c2<<" c "<<c1+(p-p1)*(c2-c1)/(p2-p1)<<G4endl;
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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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void G4ElasticHadrNucleusHE::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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{
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G4int i;
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for(i=1; i<n; i++) if(hLabMomentum <= EnP[i]) break;
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if(i == n) i = n - 1;
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Coeff0 = LineInterpol(EnP[i], EnP[i-1], C0P[i], C0P[i-1], hLabMomentum);
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Coeff1 = LineInterpol(EnP[i], EnP[i-1], C1P[i], C1P[i-1], hLabMomentum);
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Slope0 = LineInterpol(EnP[i], EnP[i-1], B0P[i], B0P[i-1], hLabMomentum);
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Slope1 = LineInterpol(EnP[i], EnP[i-1], B1P[i], B1P[i-1], hLabMomentum);
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// G4cout<<" InterpolHN: n i "<<n<<" "<<i<<" Mom "
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// <<hLabMomentum<<G4endl;
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}
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////////////////////////////////////////////////////////////////
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inline
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G4double G4ElasticHadrNucleusHE::GetBinomCof( G4int n, G4int m )
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{
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if ( n >= m && n <= 240) return SetBinom[n][m];
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else return 0.;
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}
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#endif
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