The Collins-Spiller fragmentation function.
Is a concrete implementation of the FragmentationFunctionI interface. More...

#include <CollinsSpillerFragm.h>

Inheritance diagram for genie::CollinsSpillerFragm:

Public Member Functions
	CollinsSpillerFragm ()

	CollinsSpillerFragm (string config)

	~CollinsSpillerFragm ()

double	Value (double z) const
	implements the FragmentationFunctionI interface More...

double	GenerateZ (void) const

void	Configure (const Registry &config)

void	Configure (string config)

Public Member Functions inherited from genie::FragmentationFunctionI
virtual	~FragmentationFunctionI ()

Public Member Functions inherited from genie::Algorithm
virtual	~Algorithm ()

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...

Private Member Functions
void	BuildFunction (void)

Private Attributes
TF1 *	fFunc

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::FragmentationFunctionI
	FragmentationFunctionI ()

	FragmentationFunctionI (string name)

	FragmentationFunctionI (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

The Collins-Spiller fragmentation function.
Is a concrete implementation of the FragmentationFunctionI interface.

P.D.B.Collins and T.P.Spiller, J.Phys.G11, 1289 (1984)

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

June 15, 2004

Definition at line 30 of file CollinsSpillerFragm.h.

Constructor & Destructor Documentation

CollinsSpillerFragm::CollinsSpillerFragm ( )

Definition at line 17 of file CollinsSpillerFragm.cxx.

                                          :
 FragmentationFunctionI("genie::CollinsSpillerFragm")
 {
 
 }

CollinsSpillerFragm::CollinsSpillerFragm ( string config )

Definition at line 23 of file CollinsSpillerFragm.cxx.

                                                       :
 FragmentationFunctionI("genie::CollinsSpillerFragm", config)
 {
 
 }

CollinsSpillerFragm::~CollinsSpillerFragm ( )

Definition at line 29 of file CollinsSpillerFragm.cxx.

 {
   delete fFunc;
 }

Member Function Documentation

void CollinsSpillerFragm::BuildFunction ( void )

private

Definition at line 61 of file CollinsSpillerFragm.cxx.

 {
   fFunc = new TF1("fFunc",genie::utils::frgmfunc::collins_spiller_func,0,1,2);
 
   fFunc->SetParNames("Norm","Epsilon");
 
   double N = -1. ;
   GetParam( "CSFrag-Norm", N, false ) ;
 
   double e = 0. ;
   GetParam( "CSFrag-Epsilon", e, false ) ;
 
   // if the normalization parameter was left negative, explicitly normalize
   // the fragmentation function
   if(N<0) {
     N=1;
     fFunc->SetParameters(N,e);
     double I = fFunc->Integral(0,1);
     assert(I>0);
     N = 1./I;
   }
   fFunc->SetParameters(N,e);
 }

void CollinsSpillerFragm::Configure ( const Registry & config )

virtual

methods overloading the Algorithm() interface implementation to build the fragmentation function from configuration data

Reimplemented from genie::Algorithm.

Definition at line 49 of file CollinsSpillerFragm.cxx.

 {
   Algorithm::Configure(config);
   this->BuildFunction();
 }

void CollinsSpillerFragm::Configure ( string config )

virtual

Configure the algorithm from the AlgoConfigPool based on param_set string given in input An algorithm contains a vector of registries coming from different xml configuration files, which are loaded according a very precise prioriy This methods will load a number registries in order of priority: 1) "Tunable" parameter set from CommonParametes. This is loaded with the highest prioriry and it is designed to be used for tuning procedure Usage not expected from the user. 2) For every string defined in "CommonParame" the corresponding parameter set will be loaded from CommonParameter.xml 3) parameter set specified by the config string and defined in the xml file of the algorithm 4) if config is not "Default" also the Default parameter set from the same xml file will be loaded Effectively this avoids the repetion of a parameter when it is not changed in the requested configuration

Reimplemented from genie::Algorithm.

Definition at line 55 of file CollinsSpillerFragm.cxx.

 {
   Algorithm::Configure(config);
   this->BuildFunction();
 }

double CollinsSpillerFragm::GenerateZ ( void ) const

virtual

Implements genie::FragmentationFunctionI.

Definition at line 42 of file CollinsSpillerFragm.cxx.

 {
 // Return a random number using the fragmentation function as PDF
 
   return fFunc->GetRandom();
 }

double CollinsSpillerFragm::Value ( double z ) const

virtual

implements the FragmentationFunctionI interface

Implements genie::FragmentationFunctionI.

Definition at line 34 of file CollinsSpillerFragm.cxx.

 {
 // Evaluate the fragmentation function
 
   if(z<0 || z>1) return 0;
   return fFunc->Eval(z);
 }

Member Data Documentation

TF1* genie::CollinsSpillerFragm::fFunc

private

Definition at line 48 of file CollinsSpillerFragm.h.

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

Generator/src/Physics/Hadronization/CollinsSpillerFragm.h
Generator/src/Physics/Hadronization/CollinsSpillerFragm.cxx

Public Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation