genie::mueloss::BezrukovBugaevModel Class Reference

Bezrukov-Bugaev model for the energy loss of high energy muons due to photonuclear interactions. Concrete implementation of the MuELossI interface. More...

#include <BezrukovBugaevModel.h>

Inheritance diagram for genie::mueloss::BezrukovBugaevModel:

Public Member Functions
	BezrukovBugaevModel ()
	BezrukovBugaevModel (string config)
virtual	~BezrukovBugaevModel ()
double	dE_dx (double E, MuELMaterial_t material) const
	Implement the MuELossI interface. More...
MuELProcess_t	Process (void) const
Public Member Functions inherited from genie::mueloss::MuELossI
virtual	~MuELossI ()
Public Member Functions inherited from genie::Algorithm
virtual	~Algorithm ()
virtual void	Configure (const Registry &config)
virtual void	Configure (string config)
virtual void	FindConfig (void)
virtual const Registry &	GetConfig (void) const
Registry *	GetOwnedConfig (void)
virtual const AlgId &	Id (void) const
	Get algorithm ID. More...
virtual AlgStatus_t	GetStatus (void) const
	Get algorithm status. More...
virtual bool	AllowReconfig (void) const
virtual AlgCmp_t	Compare (const Algorithm *alg) const
	Compare with input algorithm. More...
virtual void	SetId (const AlgId &id)
	Set algorithm ID. More...
virtual void	SetId (string name, string config)
const Algorithm *	SubAlg (const RgKey &registry_key) const
void	AdoptConfig (void)
void	AdoptSubstructure (void)
virtual void	Print (ostream &stream) const
	Print algorithm info. More...

Additional Inherited Members
Static Public Member Functions inherited from genie::Algorithm
static string	BuildParamVectKey (const std::string &comm_name, unsigned int i)
static string	BuildParamVectSizeKey (const std::string &comm_name)
Protected Member Functions inherited from genie::mueloss::MuELossI
	MuELossI ()
	MuELossI (string name)
	MuELossI (string name, string config)
Protected Member Functions inherited from genie::Algorithm
	Algorithm ()
	Algorithm (string name)
	Algorithm (string name, string config)
void	Initialize (void)
void	DeleteConfig (void)
void	DeleteSubstructure (void)
Registry *	ExtractLocalConfig (const Registry &in) const
Registry *	ExtractLowerConfig (const Registry &in, const string &alg_key) const
	Split an incoming configuration Registry into a block valid for the sub-algo identified by alg_key. More...
template<class T >
bool	GetParam (const RgKey &name, T &p, bool is_top_call=true) const
template<class T >
bool	GetParamDef (const RgKey &name, T &p, const T &def) const
template<class T >
int	GetParamVect (const std::string &comm_name, std::vector< T > &v, bool is_top_call=true) const
	Handle to load vectors of parameters. More...
int	GetParamVectKeys (const std::string &comm_name, std::vector< RgKey > &k, bool is_top_call=true) const
int	AddTopRegistry (Registry *rp, bool owns=true)
	add registry with top priority, also update ownership More...
int	AddLowRegistry (Registry *rp, bool owns=true)
	add registry with lowest priority, also update ownership More...
int	MergeTopRegistry (const Registry &r)
int	AddTopRegisties (const vector< Registry * > &rs, bool owns=false)
	Add registries with top priority, also udated Ownerships. More...
Protected Attributes inherited from genie::Algorithm
bool	fAllowReconfig
bool	fOwnsSubstruc
	true if it owns its substructure (sub-algs,...) More...
AlgId	fID
	algorithm name and configuration set More...
vector< Registry * >	fConfVect
vector< bool >	fOwnerships
	ownership for every registry in fConfVect More...
AlgStatus_t	fStatus
	algorithm execution status More...
AlgMap *	fOwnedSubAlgMp
	local pool for owned sub-algs (taken out of the factory pool) More...

Detailed Description

Bezrukov-Bugaev model for the energy loss of high energy muons due to photonuclear interactions. Concrete implementation of the MuELossI interface.

W.Lohmann, R.Kopp and R.Voss, Energy Loss of Muons in the Energy Range 1-10000 GeV, CERN 85-03

Author

Costas Andreopoulos <constantinos.andreopoulos cern.ch> University of Liverpool & STFC Rutherford Appleton Laboratory

December 10, 2003

Copyright (c) 2003-2020, The GENIE Collaboration For the full text of the license visit http://copyright.genie-mc.org

Definition at line 34 of file BezrukovBugaevModel.h.

Constructor & Destructor Documentation

BezrukovBugaevModel::BezrukovBugaevModel

(

)

Definition at line 23 of file BezrukovBugaevModel.cxx.

                                         :
MuELossI("genie::mueloss::BezrukovBugaevModel")
{

}

BezrukovBugaevModel::BezrukovBugaevModel

(

string

config

)

Definition at line 29 of file BezrukovBugaevModel.cxx.

                                                      :
MuELossI("genie::mueloss::BezrukovBugaevModel", config)
{

}

BezrukovBugaevModel::~BezrukovBugaevModel ( )

virtual

Definition at line 35 of file BezrukovBugaevModel.cxx.

{

}

Member Function Documentation

double BezrukovBugaevModel::dE_dx ( double  E, MuELMaterial_t  material  ) const

virtual

Implement the MuELossI interface.

Implements genie::mueloss::MuELossI.

Definition at line 40 of file BezrukovBugaevModel.cxx.

{
// Calculate the muon -dE/dx due to muon nuclear interaction (in GeV^-2).
// To convert the result to more handly units, eg MeV/(gr/cm^2), just write:
// dE_dx /= (units::MeV/(units::g/units::cm2));

  if(material == eMuUndefined) return 0;
  if(E<=MuELProcess::Threshold(this->Process()) || E>=kMaxMuE) return 0;

  // material Z,E
  double Z = MuELMaterial::Z(material);
  double A = MuELMaterial::A(material);

  // calculate (the min,max) fraction of energy, v,  carried to the photon
  double Vmin = 0.;
  double Vmax = 1. - 0.75*kSqrtNapierConst* (kMuonMass/E) * TMath::Power(Z,1/3.);

  // integrate the Bezrukov-Bugaev differential cross section v*ds/dv for
  // muon nuclear interaction over v

  ROOT::Math::IBaseFunctionOneDim * integrand =
          new gsl::BezrukovBugaevIntegrand(E,A);
  ROOT::Math::IntegrationOneDim::Type ig_type =
          utils::gsl::Integration1DimTypeFromString("adaptive");

  double abstol   = 1;    // We mostly care about relative tolerance
  double reltol   = 1E-4;
  int    nmaxeval = 100000;
  ROOT::Math::Integrator ig(*integrand,ig_type,abstol,reltol,nmaxeval);

  // calculate the b factor (bE = -dE/dx) in GeV^-3
  A *= units::g;
  double bnucl = (kNA/A) * ig.Integral(Vmin, Vmax);

  delete integrand;

  // calculate the dE/dx due to muon nuclear interaction in GeV^-2
  double de_dx = bnucl*E;
  return de_dx;
}

MuELProcess_t genie::mueloss::BezrukovBugaevModel::Process ( void  ) const

inlinevirtual

Implements genie::mueloss::MuELossI.

Definition at line 43 of file BezrukovBugaevModel.h.

{ return eMupNuclearInteraction; }

---

The documentation for this class was generated from the following files:

• Generator/src/Physics/MuonEnergyLoss/BezrukovBugaevModel.h
• Generator/src/Physics/MuonEnergyLoss/BezrukovBugaevModel.cxx