A nuclear binding energy 'collector' which visits the event record, finds nucleons originating from within a nuclei and subtracts the binding energy they had in the nucleus. To record this action in the event record a hypothetical BINDINO is added to the event record. Is a concerete implementation of the EventRecordVisitorI interface. More...

#include <NucBindEnergyAggregator.h>

Inheritance diagram for genie::NucBindEnergyAggregator:

Public Member Functions
	NucBindEnergyAggregator ()

	NucBindEnergyAggregator (string config)

	~NucBindEnergyAggregator ()

void	ProcessEventRecord (GHepRecord *event_rec) const

void	Configure (const Registry &config)

void	Configure (string config)

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

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	LoadConfig (void)

Private Attributes
bool	fAllowRecombination

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::EventRecordVisitorI
	EventRecordVisitorI ()

	EventRecordVisitorI (string name)

	EventRecordVisitorI (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

A nuclear binding energy 'collector' which visits the event record, finds nucleons originating from within a nuclei and subtracts the binding energy they had in the nucleus. To record this action in the event record a hypothetical BINDINO is added to the event record. Is a concerete implementation of the EventRecordVisitorI interface.

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

November 19, 2004

Definition at line 33 of file NucBindEnergyAggregator.h.

Constructor & Destructor Documentation

NucBindEnergyAggregator::NucBindEnergyAggregator ( )

Definition at line 36 of file NucBindEnergyAggregator.cxx.

                                                  :
 EventRecordVisitorI("genie::NucBindEnergyAggregator")
 {
 
 }

NucBindEnergyAggregator::NucBindEnergyAggregator ( string config )

Definition at line 42 of file NucBindEnergyAggregator.cxx.

                                                               :
 EventRecordVisitorI("genie::NucBindEnergyAggregator", config)
 {
 
 }

NucBindEnergyAggregator::~NucBindEnergyAggregator ( )

Definition at line 48 of file NucBindEnergyAggregator.cxx.

 {
 
 }

Member Function Documentation

void NucBindEnergyAggregator::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 201 of file NucBindEnergyAggregator.cxx.

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

void NucBindEnergyAggregator::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 207 of file NucBindEnergyAggregator.cxx.

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

void NucBindEnergyAggregator::LoadConfig ( void )

private

Definition at line 213 of file NucBindEnergyAggregator.cxx.

 {
         GetParamDef("AllowNuclRecombination",fAllowRecombination, true  ) ;
 
 }

void NucBindEnergyAggregator::ProcessEventRecord ( GHepRecord * event_rec ) const

virtual

Implements genie::EventRecordVisitorI.

Definition at line 53 of file NucBindEnergyAggregator.cxx.

 {
   // Return if the neutrino was not scatterred off a nuclear target
   GHepParticle * nucltgt = evrec->TargetNucleus();
   if (!nucltgt) {
     LOG("Nuclear", pINFO)
         << "No nuclear target found - Not subtracting any binding energy";
     return;
   }
 
   // Loop over particles, find final state nucleons for which a removal 
   // energy has been set and subtract it from their energy
   TIter stdhep_iter(evrec);
   GHepParticle * p = 0;
 
   while( (p = (GHepParticle * ) stdhep_iter.Next()) ) {
 
      bool is_nucleon   = pdg::IsNeutronOrProton(p->Pdg());  
      bool in_fin_state = (p->Status() == kIStStableFinalState);
      bool had_bind_e   = (p->RemovalEnergy() > 0.);
 
      bool handle = is_nucleon && in_fin_state && had_bind_e;
      if(!handle) continue;
 
      //-- ask for the binding energy set by the nuclear model
      double bindE = p->RemovalEnergy();
      LOG("Nuclear", pINFO) << "Binding energy = " << bindE;
 
      //-- subtract this energy from the final state nucleon
      LOG("Nuclear", pINFO)
           << "Subtracting the binding energy from the escaped nucleon";
 
      double M  = p->Mass();
      double En = p->Energy();
      double KE = En-M;
 
      LOG("Nuclear", pINFO)  << "Kinetic energy before subtraction = " << KE;
      KE -= bindE;
      KE = TMath::Max(0.,KE);
 
      LOG("Nuclear", pINFO) << "Kinetic energy after subtraction = " << KE;
 
      En = KE+M;
 
      if(En>M || !fAllowRecombination) { 
          double pmag_old = p->P4()->P();
          double pmag_new = TMath::Sqrt(utils::math::NonNegative(En*En-M*M));
          double scale    = pmag_new / pmag_old;
          LOG("Nuclear", pINFO) 
              << "|pnew| = " << pmag_new << ", |pold| = " << pmag_old
              << ", scale = " << scale;
 
          double pxn = scale * p->Px();
          double pyn = scale * p->Py();
          double pzn = scale * p->Pz();
 
          double pxb = (1-scale) * p->Px();
          double pyb = (1-scale) * p->Py();
          double pzb = (1-scale) * p->Pz();
 
           p->SetEnergy ( En  );
           p->SetPx     ( pxn );
           p->SetPy     ( pyn );
           p->SetPz     ( pzn );
 
           //-- and add a GHEP entry to record this in the event record and
           //   conserve energy/momentum
           LOG("Nuclear", pINFO)
              << "Adding a [BindingE] to account for nuclear binding energy";
 
           evrec->AddParticle(kPdgBindino, kIStStableFinalState, 
                                    -1,-1,-1,-1, pxb,pyb,pzb,bindE, 0,0,0,0);
      } else {
           LOG("Nuclear", pNOTICE)
                << "Nucleon is above the Fermi sea but can't escape the nucleus";
           LOG("Nuclear", pNOTICE)
                << "Recombining remnant nucleus + f/s nucleon";
 
           LOG("Nuclear", pERROR)
                << "*** This functionality is temporarily disabled";
 /*
           LOG("Nuclear", pNOTICE) << *evrec;
 
           // find the remnant nucleus
           int rnucpos = evrec->RemnantNucleusPosition();
           assert(rnucpos);
 
           GHepParticle * rnucl = evrec->Particle(rnucpos);
 
           // mark both the remnant nucleus and the final state nucleon as 
           // intermediate states
           rnucl -> SetStatus(kIStIntermediateState);
           p     -> SetStatus(kIStIntermediateState);
 
           // figure out the recombined nucleus PDG code
           int Z = rnucl->Z();
           int A = rnucl->A();
           if(pdg::IsProton(p->Pdg())) Z++;
           A++;
           int ipdgc = pdg::IonPdgCode(A,Z);
 
           // add-up their 4-momenta
           double pxnuc = rnucl->Px() + p->Px();
           double pynuc = rnucl->Py() + p->Py();
           double pznuc = rnucl->Pz() + p->Pz();
           double Enuc  = rnucl->E()  + p->E();
 
           evrec->AddParticle(ipdgc, kIStStableFinalState,
                        rnucpos,-1,-1,-1, pxnuc,pynuc,pznuc,Enuc, 0,0,0,0);
 */
      }
   }
 }

Member Data Documentation

bool genie::NucBindEnergyAggregator::fAllowRecombination

private

Definition at line 52 of file NucBindEnergyAggregator.h.

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

Generator/src/Physics/HadronTransport/NucBindEnergyAggregator.h
Generator/src/Physics/HadronTransport/NucBindEnergyAggregator.cxx

Public Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation