genie::evtlib::EvtLibPXSec Class Reference

#include <EvtLibPXSec.h>

Inheritance diagram for genie::evtlib::EvtLibPXSec:

Public Member Functions
	EvtLibPXSec ()
	EvtLibPXSec (string config)
virtual	~EvtLibPXSec ()
double	XSec (const Interaction *i, KinePhaseSpace_t k) const
	Compute the cross section for the input interaction. More...
double	Integral (const Interaction *i) const
bool	ValidProcess (const Interaction *i) const
	Can this cross section algorithm handle the input process? More...
void	Configure (const Registry &config)
void	Configure (string param_set)
Public Member Functions inherited from genie::XSecAlgorithmI
virtual	~XSecAlgorithmI ()
virtual bool	ValidKinematics (const Interaction *i) const
	Is the input kinematical point a physically allowed one? More...
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...

Protected Member Functions
TGraph *	GetXSec (const Interaction *in) const
void	LoadXSecs ()
void	ClearXSecs ()
Protected Member Functions inherited from genie::XSecAlgorithmI
	XSecAlgorithmI ()
	XSecAlgorithmI (string name)
	XSecAlgorithmI (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
std::map< Key, TGraph * >	fXSecs
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...

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)

Detailed Description

Definition at line 13 of file EvtLibPXSec.h.

Constructor & Destructor Documentation

EvtLibPXSec::EvtLibPXSec

(

)

Definition at line 17 of file EvtLibPXSec.cxx.

                         :
XSecAlgorithmI("genie::evtlib::EvtLibPXSec")
{

}

EvtLibPXSec::EvtLibPXSec

(

string

config

)

Definition at line 24 of file EvtLibPXSec.cxx.

                                      :
XSecAlgorithmI("genie::evtlib::EvtLibPXSec", config)
{

}

EvtLibPXSec::~EvtLibPXSec ( )

virtual

Definition at line 31 of file EvtLibPXSec.cxx.

{
  ClearXSecs();
}

Member Function Documentation

void EvtLibPXSec::ClearXSecs ( )

protected

Definition at line 78 of file EvtLibPXSec.cxx.

{
  for(auto it: fXSecs) delete it.second;
  fXSecs.clear();
}

void EvtLibPXSec::Configure ( const Registry &  config )

virtual

Configure the algorithm with an external registry The registry is merged with the top level registry if it is owned, Otherwise a copy of it is added with the highest priority

Reimplemented from genie::Algorithm.

Definition at line 64 of file EvtLibPXSec.cxx.

{
  Algorithm::Configure(config);
  LoadXSecs();
}

void EvtLibPXSec::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 71 of file EvtLibPXSec.cxx.

{
  Algorithm::Configure(config);
  LoadXSecs();
}

TGraph * EvtLibPXSec::GetXSec ( const Interaction *  in ) const

protected

Definition at line 143 of file EvtLibPXSec.cxx.

{
  const InitialState& init_state = in->InitState();

  const ProcessInfo& proc = in->ProcInfo();
  if(!proc.IsWeakCC() && !proc.IsWeakNC()){
    LOG("ELI", pINFO) << "Skipping unknown process " << proc;
    return 0;
  }

  int pdg = init_state.ProbePdg();
  // Use nu_mu for NC as a convention internal to this code to index into the
  // xsec graphs map.
  if(proc.IsWeakNC()){
    if(pdg > 0) pdg = kPdgNuMu; else pdg = kPdgAntiNuMu;
  }

  const Key key(init_state.TgtPdg(), pdg, proc.IsWeakCC());

  auto it = fXSecs.find(key);
  if(it == fXSecs.end()){
    LOG("ELI", pINFO) << "Skipping process without xsec " << key;
    return 0;
  }

  return it->second;
}

double EvtLibPXSec::Integral ( const Interaction *  i ) const

virtual

Integrate the model over the kinematic phase space available to the input interaction (kinematical cuts can be included)

Implements genie::XSecAlgorithmI.

Definition at line 45 of file EvtLibPXSec.cxx.

{
  TGraph* g = GetXSec(in);
  if(!g) return 0; // Reason already printed

  const InitialState& init_state = in->InitState();
  const double E  = init_state.ProbeE(kRfLab);

  // Units of the cross-section graph are expected to be 10^-38 cm^2 / nucleus
  return g->Eval(E) * 1e-38 * genie::units::cm2;
}

void EvtLibPXSec::LoadXSecs ( )

protected

Definition at line 85 of file EvtLibPXSec.cxx.

{
  ClearXSecs();

  std::string libPath;
  GetParam("EventLibraryPath", libPath);
  Expand(libPath);

  PDGLibrary* pdglib = PDGLibrary::Instance();

  TFile fin(libPath.c_str());
  if(fin.IsZombie()) exit(1);

  TIter next(fin.GetListOfKeys());
  while(TObject* dir = next()){
    const std::string& tgtName = dir->GetName();
    const TParticlePDG* tgtPart = pdglib->DBase()->GetParticle(tgtName.c_str());
    if(!tgtPart){
      LOG("ELI", pWARN) << "Unknown nucleus " << tgtName
                        << " found in " << libPath
                        << " -- skipping";
      continue;
    }

    for(int pdg: {kPdgNuE,   kPdgAntiNuE,
                  kPdgNuMu,  kPdgAntiNuMu,
                  kPdgNuTau, kPdgAntiNuTau}){

      for(bool iscc: {true, false}){
        // NCs should be the same for all flavours. Use nu_mu as a convention
        // internal to this code to index into the xsecs map.
        if(!iscc && abs(pdg) != kPdgNuMu) continue;

        std::string nuName = pdglib->Find(pdg)->GetName();
        if(!iscc) nuName = pdg::IsAntiNeutrino(pdg) ? "nu_bar" : "nu";

        const std::string graphName =
          TString::Format("%s/%s/%s/xsec",
                          tgtName.c_str(),
                          iscc ? "cc" : "nc",
                          nuName.c_str()).Data();

        const Key key(tgtPart->PdgCode(), pdg, iscc);

        TGraph* g = (TGraph*)fin.Get(graphName.c_str());
        if(!g){
          LOG("ELI", pINFO) << graphName << " not found in "
                            << libPath << " -- skipping";
          continue;
        }

        fXSecs[key] = new TGraph(*g);
      } // end for iscc
    } // end for pdg
  } // end for dir
}

bool EvtLibPXSec::ValidProcess ( const Interaction *  i ) const

virtual

Can this cross section algorithm handle the input process?

Implements genie::XSecAlgorithmI.

Definition at line 58 of file EvtLibPXSec.cxx.

{
  return true;
}

double EvtLibPXSec::XSec ( const Interaction *  i, KinePhaseSpace_t  k  ) const

virtual

Compute the cross section for the input interaction.

Implements genie::XSecAlgorithmI.

Definition at line 37 of file EvtLibPXSec.cxx.

{
  LOG("ELI", pFATAL) << "This point should not be reached" ; 
  abort();
}

Member Data Documentation

std::map<Key, TGraph*> genie::evtlib::EvtLibPXSec::fXSecs

protected

Definition at line 35 of file EvtLibPXSec.h.

---

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

• Generator/src/Tools/EvtLib/EvtLibPXSec.h
• Generator/src/Tools/EvtLib/EvtLibPXSec.cxx