Import Geant4 10.5.0.beta source tree
This commit is contained in:
Gabriele Cosmo
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//
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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: G4DiffuseElasticV2.hh 94676 2015-12-02 09:51:20Z gunter $
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//
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// Author: V. Grichine (Vladimir,Grichine@cern.ch)
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//
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//
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// G4 Model: diffuse optical elastic scattering with 4-momentum balance
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//
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// Class Description
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// Final state production model for hadron nuclear elastic scattering;
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// Class Description - End
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//
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//
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// 24.05.07 V. Grichine, first implementation for hadron (no Coulomb) elastic scattering
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// 04.09.07 V. Grichine, implementation for Coulomb elastic scattering
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// 12.06.11 V. Grichine, new interface to G4hadronElastic
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// 24.11.17 W. Pokorski, code cleanup and performance improvements
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#ifndef G4DiffuseElasticV2_h
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#define G4DiffuseElasticV2_h 1
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#include <CLHEP/Units/PhysicalConstants.h>
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#include "globals.hh"
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#include "G4HadronElastic.hh"
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#include "G4HadProjectile.hh"
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#include "G4Nucleus.hh"
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#include "G4Pow.hh"
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#include <vector>
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class G4ParticleDefinition;
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class G4PhysicsTable;
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class G4PhysicsLogVector;
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class G4DiffuseElasticV2 : public G4HadronElastic // G4HadronicInteraction
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{
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public:
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G4DiffuseElasticV2();
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virtual ~G4DiffuseElasticV2();
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virtual G4bool IsApplicable(const G4HadProjectile &/*aTrack*/,
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G4Nucleus & /*targetNucleus*/);
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void Initialise();
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void InitialiseOnFly(G4double Z, G4double A);
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void BuildAngleTable();
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virtual G4double SampleInvariantT(const G4ParticleDefinition* p,
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G4double plab,
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G4int Z, G4int A);
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G4double NeutronTuniform(G4int Z);
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void SetPlabLowLimit(G4double value);
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void SetHEModelLowLimit(G4double value);
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void SetQModelLowLimit(G4double value);
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void SetLowestEnergyLimit(G4double value);
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void SetRecoilKinEnergyLimit(G4double value);
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G4double SampleTableT(const G4ParticleDefinition* aParticle,
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G4double p, G4double Z, G4double A);
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G4double SampleThetaCMS(const G4ParticleDefinition* aParticle, G4double p, G4double A);
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G4double SampleTableThetaCMS(const G4ParticleDefinition* aParticle, G4double p,
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G4double Z, G4double A);
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G4double GetScatteringAngle(G4int iMomentum, unsigned long iAngle, G4double position);
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G4double SampleThetaLab(const G4HadProjectile* aParticle,
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G4double tmass, G4double A);
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G4double CalculateZommerfeld( G4double beta, G4double Z1, G4double Z2 );
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G4double CalculateAm( G4double momentum, G4double n, G4double Z);
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G4double CalculateNuclearRad( G4double A);
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G4double ThetaCMStoThetaLab(const G4DynamicParticle* aParticle,
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G4double tmass, G4double thetaCMS);
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G4double ThetaLabToThetaCMS(const G4DynamicParticle* aParticle,
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G4double tmass, G4double thetaLab);
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G4double BesselJzero(G4double z);
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G4double BesselJone(G4double z);
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G4double DampFactor(G4double z);
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G4double BesselOneByArg(G4double z);
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G4double GetDiffElasticSumProbA(G4double alpha);
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G4double GetIntegrandFunction(G4double theta);
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G4double GetNuclearRadius(){return fNuclearRadius;};
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private:
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G4ParticleDefinition* theProton;
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G4ParticleDefinition* theNeutron;
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G4double lowEnergyRecoilLimit;
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G4double lowEnergyLimitHE;
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G4double lowEnergyLimitQ;
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G4double lowestEnergyLimit;
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G4double plabLowLimit;
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G4int fEnergyBin;
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unsigned long fAngleBin;
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G4PhysicsLogVector* fEnergyVector;
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std::vector<std::vector<std::vector<double>*>*> fEnergyAngleVectorBank;
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std::vector<std::vector<std::vector<double>*>*> fEnergySumVectorBank;
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std::vector<std::vector<double>*>* fEnergyAngleVector;
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std::vector<std::vector<double>*>* fEnergySumVector;
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std::vector<G4double> fElementNumberVector;
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std::vector<G4String> fElementNameVector;
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const G4ParticleDefinition* fParticle;
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G4double fWaveVector;
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G4double fAtomicWeight;
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G4double fAtomicNumber;
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G4double fNuclearRadius;
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G4double fBeta;
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G4double fZommerfeld;
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G4double fAm;
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G4bool fAddCoulomb;
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};
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inline G4bool G4DiffuseElasticV2::IsApplicable(const G4HadProjectile & projectile,
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G4Nucleus & nucleus)
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{
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if( ( projectile.GetDefinition() == G4Proton::Proton() ||
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projectile.GetDefinition() == G4Neutron::Neutron() ||
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projectile.GetDefinition() == G4PionPlus::PionPlus() ||
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projectile.GetDefinition() == G4PionMinus::PionMinus() ||
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projectile.GetDefinition() == G4KaonPlus::KaonPlus() ||
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projectile.GetDefinition() == G4KaonMinus::KaonMinus() ) &&
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nucleus.GetZ_asInt() >= 2 ) return true;
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else return false;
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}
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inline void G4DiffuseElasticV2::SetRecoilKinEnergyLimit(G4double value)
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{
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lowEnergyRecoilLimit = value;
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}
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inline void G4DiffuseElasticV2::SetPlabLowLimit(G4double value)
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{
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plabLowLimit = value;
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}
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inline void G4DiffuseElasticV2::SetHEModelLowLimit(G4double value)
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{
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lowEnergyLimitHE = value;
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}
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inline void G4DiffuseElasticV2::SetQModelLowLimit(G4double value)
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{
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lowEnergyLimitQ = value;
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}
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inline void G4DiffuseElasticV2::SetLowestEnergyLimit(G4double value)
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{
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lowestEnergyLimit = value;
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}
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/////////////////////////////////////////////////////////////
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//
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// Bessel J0 function based on rational approximation from
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// J.F. Hart, Computer Approximations, New York, Willey 1968, p. 141
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inline G4double G4DiffuseElasticV2::BesselJzero(G4double value)
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{
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G4double modvalue, value2, fact1, fact2, arg, shift, bessel;
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modvalue = std::fabs(value);
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if ( value < 8.0 && value > -8.0 )
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{
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value2 = value*value;
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fact1 = 57568490574.0 + value2*(-13362590354.0
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+ value2*( 651619640.7
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+ value2*(-11214424.18
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+ value2*( 77392.33017
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+ value2*(-184.9052456 ) ) ) ) );
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fact2 = 57568490411.0 + value2*( 1029532985.0
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+ value2*( 9494680.718
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+ value2*(59272.64853
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+ value2*(267.8532712
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+ value2*1.0 ) ) ) );
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bessel = fact1/fact2;
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}
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else
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{
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arg = 8.0/modvalue;
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value2 = arg*arg;
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shift = modvalue-0.785398164;
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fact1 = 1.0 + value2*(-0.1098628627e-2
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+ value2*(0.2734510407e-4
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+ value2*(-0.2073370639e-5
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+ value2*0.2093887211e-6 ) ) );
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fact2 = -0.1562499995e-1 + value2*(0.1430488765e-3
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+ value2*(-0.6911147651e-5
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+ value2*(0.7621095161e-6
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- value2*0.934945152e-7 ) ) );
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bessel = std::sqrt(0.636619772/modvalue)*(std::cos(shift)*fact1 - arg*std::sin(shift)*fact2 );
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}
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return bessel;
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}
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/////////////////////////////////////////////////////////////
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//
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// Bessel J1 function based on rational approximation from
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// J.F. Hart, Computer Approximations, New York, Willey 1968, p. 141
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inline G4double G4DiffuseElasticV2::BesselJone(G4double value)
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{
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G4double modvalue, value2, fact1, fact2, arg, shift, bessel;
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modvalue = std::fabs(value);
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if ( modvalue < 8.0 )
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{
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value2 = value*value;
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fact1 = value*(72362614232.0 + value2*(-7895059235.0
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+ value2*( 242396853.1
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+ value2*(-2972611.439
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+ value2*( 15704.48260
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+ value2*(-30.16036606 ) ) ) ) ) );
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fact2 = 144725228442.0 + value2*(2300535178.0
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+ value2*(18583304.74
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+ value2*(99447.43394
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+ value2*(376.9991397
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+ value2*1.0 ) ) ) );
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bessel = fact1/fact2;
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}
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else
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{
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arg = 8.0/modvalue;
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value2 = arg*arg;
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shift = modvalue - 2.356194491;
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fact1 = 1.0 + value2*( 0.183105e-2
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+ value2*(-0.3516396496e-4
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+ value2*(0.2457520174e-5
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+ value2*(-0.240337019e-6 ) ) ) );
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fact2 = 0.04687499995 + value2*(-0.2002690873e-3
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+ value2*( 0.8449199096e-5
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+ value2*(-0.88228987e-6
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+ value2*0.105787412e-6 ) ) );
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bessel = std::sqrt( 0.636619772/modvalue)*(std::cos(shift)*fact1 - arg*std::sin(shift)*fact2);
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if (value < 0.0) bessel = -bessel;
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}
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return bessel;
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}
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////////////////////////////////////////////////////////////////////
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//
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// damp factor in diffraction x/sh(x), x was already *pi
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inline G4double G4DiffuseElasticV2::DampFactor(G4double x)
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{
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G4double df;
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G4double f2 = 2., f3 = 6., f4 = 24.; // first factorials
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// x *= pi;
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if( std::fabs(x) < 0.01 )
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{
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df = 1./(1. + x/f2 + x*x/f3 + x*x*x/f4);
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}
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else
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{
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df = x/std::sinh(x);
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}
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return df;
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}
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////////////////////////////////////////////////////////////////////
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//
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// return J1(x)/x with special case for small x
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inline G4double G4DiffuseElasticV2::BesselOneByArg(G4double x)
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{
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G4double x2, result;
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if( std::fabs(x) < 0.01 )
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{
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x *= 0.5;
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x2 = x*x;
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result = 2. - x2 + x2*x2/6.;
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}
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else
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{
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result = BesselJone(x)/x;
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}
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return result;
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}
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////////////////////////////////////////////////////////////////////
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//
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// return Zommerfeld parameter for Coulomb scattering
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inline G4double G4DiffuseElasticV2::CalculateZommerfeld( G4double beta, G4double Z1, G4double Z2 )
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{
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fZommerfeld = CLHEP::fine_structure_const*Z1*Z2/beta;
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return fZommerfeld;
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}
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////////////////////////////////////////////////////////////////////
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//
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// return Wentzel correction for Coulomb scattering
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inline G4double G4DiffuseElasticV2::CalculateAm( G4double momentum, G4double n, G4double Z)
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{
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G4double k = momentum/CLHEP::hbarc;
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G4double ch = 1.13 + 3.76*n*n;
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G4double zn = 1.77*k*(1.0/G4Pow::GetInstance()->A13(Z))*CLHEP::Bohr_radius;
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G4double zn2 = zn*zn;
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fAm = ch/zn2;
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return fAm;
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}
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////////////////////////////////////////////////////////////////////
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//
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// calculate nuclear radius for different atomic weights using different approximations
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inline G4double G4DiffuseElasticV2::CalculateNuclearRad( G4double A)
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{
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G4double R, r0, a11, a12, a13, a2, a3;
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a11 = 1.26; // 1.08, 1.16
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a12 = 1.; // 1.08, 1.16
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a13 = 1.12; // 1.08, 1.16
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a2 = 1.1;
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a3 = 1.;
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// Special rms radii for light nucleii
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if (A < 50.)
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{
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if (std::abs(A-1.) < 0.5) return 0.89*CLHEP::fermi; // p
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else if(std::abs(A-2.) < 0.5) return 2.13*CLHEP::fermi; // d
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else if( // std::abs(Z-1.) < 0.5 &&
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std::abs(A-3.) < 0.5) return 1.80*CLHEP::fermi; // t
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// else if(std::abs(Z-2.) < 0.5 && std::abs(A-3.) < 0.5) return 1.96CLHEP::fermi; // He3
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else if( // std::abs(Z-2.) < 0.5 &&
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std::abs(A-4.) < 0.5) return 1.68*CLHEP::fermi; // He4
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else if( // std::abs(Z-3.) < 0.5
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std::abs(A-7.) < 0.5 ) return 2.40*CLHEP::fermi; // Li7
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else if( // std::abs(Z-4.) < 0.5
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std::abs(A-9.) < 0.5) return 2.51*CLHEP::fermi; // Be9
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else if( 10. < A && A <= 16. ) r0 = a11*( 1 - (1.0/G4Pow::GetInstance()->A23(A)) )*CLHEP::fermi; // 1.08CLHEP::fermi;
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else if( 15. < A && A <= 20. ) r0 = a12*( 1 - (1.0/G4Pow::GetInstance()->A23(A)) )*CLHEP::fermi;
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else if( 20. < A && A <= 30. ) r0 = a13*( 1 - (1.0/G4Pow::GetInstance()->A23(A)) )*CLHEP::fermi;
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else r0 = a2*CLHEP::fermi;
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R = r0*G4Pow::GetInstance()->A13(A);
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}
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else
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{
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r0 = a3*CLHEP::fermi;
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R = r0*G4Pow::GetInstance()->powA(A, 0.27);
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}
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fNuclearRadius = R;
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return R;
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}
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#endif
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@@ -244,7 +244,7 @@ private:
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G4int fInTkin;
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G4double fOldTkin;
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static const G4double theNuclNuclData[18][6];
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static const G4double theNuclNuclData[19][6];
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static const G4double thePiKaNuclData[8][6];
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G4HadronNucleonXsc* fHadrNuclXsc;
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};
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@@ -368,9 +368,9 @@ inline void G4hhElastic::SetParametersCMS(G4double plab)
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}
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else // in approximation between array points
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{
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for( i = 0; i < 18; i++ ) if( sCMS <= theNuclNuclData[i][0]*CLHEP::GeV ) break;
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for( i = 0; i < 19; i++ ) if( sCMS <= theNuclNuclData[i][0]*CLHEP::GeV ) break;
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if( i == 0 ) i++;
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if( i == 18 ) i--;
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if( i == 19 ) i--;
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sl = theNuclNuclData[i-1][0]*CLHEP::GeV;
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sh = theNuclNuclData[i][0]*CLHEP::GeV;
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