Gabriele Cosmo
204 lines
6.1 KiB
C++
204 lines
6.1 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 1.34 2007/04/02 08:32:00 vnivanch Exp $
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// GEANT4 tag $Name: geant4-08-03 $
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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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//
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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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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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class ElasticData
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{
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public:
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ElasticData(const G4ParticleDefinition* h,
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G4int A, G4double* eGeV);
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~ElasticData(){}
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const G4ParticleDefinition* Hadron() {return hadr;}
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private:
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void DefineNucleusParameters(G4int A);
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const G4ParticleDefinition* hadr;
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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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G4int dnkE[NENERGY];
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G4double maxQ2[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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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,
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G4double pTotLabMomentum, G4int Z, G4int N);
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private:
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G4double InterPol(G4double X1, G4double X2, G4double X3,
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G4double Y1, G4double Y2, G4double Y3,
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G4double X);
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G4double HadronNucleusQ2_2(const G4ParticleDefinition * aHadron,
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ElasticData * pElD,
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G4double aLabMom);
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G4double GetLightFq2(G4int N, G4double Q);
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G4int GetBinom(G4int m, G4int n);
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// ======================================================
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G4DynamicParticle aHad;
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G4float GetFt(G4double T);
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G4float GetDistrFun(G4double Q2);
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G4double GetQ2(G4double Ran);
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G4double GetQ2_2(G4int N, G4double * Q,
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G4double * F, G4double R);
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G4double HadronProtonQ2(const G4ParticleDefinition * aHadron,
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G4double TotMom);
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void GetKinematics(const G4ParticleDefinition * aHadron,
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G4double TotMom);
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void GetParametersHP(const G4ParticleDefinition * aHadron,
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G4double TotMom);
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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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void GetHadronValues(const G4ParticleDefinition * aHadron,
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G4double TotMom);
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G4double SigTot, Slope, ReOnIm, HdrE, ConstU, Q2;
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G4double ProtonM, HadronM, HadronE, Sh, PM2, HM2;
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G4double EcmP, EcmH, Kcm, CosCM, SqrtS, MaxT, FmaxT, DsigDt;
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G4double Slope1, Slope2, Coeff1, Coeff2, IntConst, MaxTR;
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G4double Slope0, Coeff0;
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G4double BoundaryP[7], BoundaryTL[7], BoundaryTG[7];
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G4double MomentumH;
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G4int HadrCodes[7];
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G4int verboselevel;
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// ======================================================
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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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G4int HadrCode;
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G4int Nstep, // The number of steps on Q2
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iKindWork, //
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iContr, //
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iPoE; // The number of steps on E
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G4int iTypeWork, CurrentN;
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G4double aNucleon;
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G4double R1, R2, Pnucl, Aeff;
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G4double dEbeg1, dEend1, dQ2, maxQ2;
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G4double HadrTot, HadrSlope, HadrReIm, DDSect2, DDSect3, MomentumCM;
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G4double Q2res;
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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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std::vector<ElasticData*> SetOfElasticData;
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// ++++++++++++++++++++++++++++++++++++++++++++++++++++++
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void Binom()
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{
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G4int N, M;
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G4double Fact1, J;
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for(N=0; N<240; N++)
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{
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J = 1;
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for(M=0; M<=N; M++)
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{
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Fact1 = 1;
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if ((N>0) && (N>M) && M>0)
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{
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J *= G4double(N-M+1)/G4double(M);
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Fact1 = J;
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}
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SetBinom[N][M] = Fact1;
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}
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}
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return;
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}
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}; // The end of the class description
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#endif
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