gen::Py8GunBase Class Reference

#include <Py8GunBase.h>

Inheritance diagram for gen::Py8GunBase:

Public Member Functions
void	finalizeEvent ()
edm::Event &	getEDMEvent () const
HepMC::GenEvent *	getGenEvent ()
GenEventInfoProduct *	getGenEventInfo ()
GenRunInfoProduct &	getGenRunInfo ()
bool	initializeForInternalPartons ()
	Py8GunBase (edm::ParameterSet const &ps)
void	resetEvent (HepMC::GenEvent *event)
void	resetEventInfo (GenEventInfoProduct *eventInfo)
virtual bool	residualDecay ()
virtual bool	select (HepMC::GenEvent *) const
void	setEDMEvent (edm::Event &event)
void	setRandomEngine (CLHEP::HepRandomEngine *v)
std::vector< std::string > const &	sharedResources () const
void	statistics ()
	~Py8GunBase ()
Public Member Functions inherited from gen::Py8InterfaceBase
virtual const char *	classname () const =0
bool	decay ()
bool	declareSpecialSettings (const std::vector< std::string > &)
bool	declareStableParticles (const std::vector< int > &)
virtual bool	generatePartonsAndHadronize ()=0
void	p8SetRandomEngine (CLHEP::HepRandomEngine *v)
	Py8InterfaceBase (edm::ParameterSet const &ps)
P8RndmEngine &	randomEngine ()
bool	readSettings (int)
	~Py8InterfaceBase ()

Protected Member Functions
std::auto_ptr< HepMC::GenEvent > &	event ()
std::auto_ptr < GenEventInfoProduct > &	eventInfo ()
GenRunInfoProduct &	runInfo ()

Protected Attributes
double	fMaxPhi
double	fMinPhi
std::vector< int >	fPartIDs
Protected Attributes inherited from gen::Py8InterfaceBase
HepMC::IO_AsciiParticles *	ascii_io
std::auto_ptr< Pythia8::Pythia >	fDecayer
std::auto_ptr< Pythia8::Pythia >	fMasterGen
ParameterCollector	fParameters
unsigned int	maxEventsToPrint
bool	pythiaHepMCVerbosity
bool	pythiaHepMCVerbosityParticles
unsigned int	pythiaPylistVerbosity
HepMC::Pythia8ToHepMC	toHepMC

Private Attributes
edm::Event *	edmEvent_
std::auto_ptr< HepMC::GenEvent >	genEvent_
std::auto_ptr < GenEventInfoProduct >	genEventInfo_
GenRunInfoProduct	genRunInfo_

Static Private Attributes
static const std::vector < std::string >	p8SharedResources = { edm::SharedResourceNames::kPythia8 }

Detailed Description

Definition at line 41 of file Py8GunBase.h.

Constructor & Destructor Documentation

gen::Py8GunBase::Py8GunBase

(

edm::ParameterSet const &

ps

)

Definition at line 12 of file Py8GunBase.cc.

References fMaxPhi, fMinPhi, fPartIDs, edm::ParameterSet::getParameter(), edm::ParameterSet::getUntrackedParameter(), runInfo(), GenRunInfoProduct::setExternalXSecLO(), GenRunInfoProduct::setExternalXSecNLO(), and GenRunInfoProduct::setFilterEfficiency().

   : Py8InterfaceBase(ps)
{

   runInfo().setFilterEfficiency(
      ps.getUntrackedParameter<double>("filterEfficiency", -1.) );
   runInfo().setExternalXSecLO(
      GenRunInfoProduct::XSec(ps.getUntrackedParameter<double>("crossSection", -1.)) );
   runInfo().setExternalXSecNLO(
       GenRunInfoProduct::XSec(ps.getUntrackedParameter<double>("crossSectionNLO", -1.)) );

  
  // PGun specs
  //
   edm::ParameterSet pgun_params = 
      ps.getParameter<edm::ParameterSet>("PGunParameters");
      
   // although there's the method ParameterSet::empty(),  
   // it looks like it's NOT even necessary to check if it is,
   // before trying to extract parameters - if it is empty,
   // the default values seem to be taken
   //
   fPartIDs    = pgun_params.getParameter< std::vector<int> >("ParticleID");
   fMinPhi     = pgun_params.getParameter<double>("MinPhi"); // ,-3.14159265358979323846);
   fMaxPhi     = pgun_params.getParameter<double>("MaxPhi"); // , 3.14159265358979323846);
   
}

gen::Py8GunBase::~Py8GunBase ( )

inline

Definition at line 44 of file Py8GunBase.h.

{}

Member Function Documentation

std::auto_ptr<HepMC::GenEvent>& gen::Py8GunBase::event ( )

inlineprotected

Definition at line 69 of file Py8GunBase.h.

References genEvent_.

Referenced by finalizeEvent(), gen::Py8JetGun::generatePartonsAndHadronize(), gen::Py8PtGun::generatePartonsAndHadronize(), gen::Py8EGun::generatePartonsAndHadronize(), residualDecay(), and setEDMEvent().

{ return genEvent_; }

std::auto_ptr<GenEventInfoProduct>& gen::Py8GunBase::eventInfo ( )

inlineprotected

Definition at line 70 of file Py8GunBase.h.

References genEventInfo_.

{ return genEventInfo_; }

void gen::Py8GunBase::finalizeEvent ( )

virtual

Implements gen::Py8InterfaceBase.

Definition at line 114 of file Py8GunBase.cc.

References gen::Py8InterfaceBase::ascii_io, gather_cfg::cout, event(), gen::Py8InterfaceBase::fMasterGen, gen::Py8InterfaceBase::maxEventsToPrint, gen::Py8InterfaceBase::pythiaHepMCVerbosity, gen::Py8InterfaceBase::pythiaHepMCVerbosityParticles, and gen::Py8InterfaceBase::pythiaPylistVerbosity.

{
   
  //******** Verbosity ********

  if (maxEventsToPrint > 0 &&
      (pythiaPylistVerbosity || pythiaHepMCVerbosity ||
                                pythiaHepMCVerbosityParticles) ) 
  {
    maxEventsToPrint--;
    if (pythiaPylistVerbosity) 
    {
      fMasterGen->info.list(std::cout); 
      fMasterGen->event.list(std::cout);
    } 

    if (pythiaHepMCVerbosity) 
    {
      std::cout << "Event process = "
                << fMasterGen->info.code() << "\n"
                << "----------------------" << std::endl;
      event()->print();
    }
    if (pythiaHepMCVerbosityParticles) {
      std::cout << "Event process = "
                << fMasterGen->info.code() << "\n"
                << "----------------------" << std::endl;
      ascii_io->write_event(event().get());
    }
  }
      
  return;
}

edm::Event& gen::Py8GunBase::getEDMEvent ( ) const

inline

Definition at line 56 of file Py8GunBase.h.

References edmEvent_.

{ return *edmEvent_; }

HepMC::GenEvent* gen::Py8GunBase::getGenEvent ( )

inline

Definition at line 48 of file Py8GunBase.h.

References genEvent_.

{ return genEvent_.release(); }

GenEventInfoProduct* gen::Py8GunBase::getGenEventInfo ( )

inline

Definition at line 49 of file Py8GunBase.h.

References genEventInfo_.

{ return genEventInfo_.release(); }

GenRunInfoProduct& gen::Py8GunBase::getGenRunInfo ( )

inline

Definition at line 47 of file Py8GunBase.h.

References genRunInfo_.

{ return genRunInfo_; }

bool gen::Py8GunBase::initializeForInternalPartons ( )

virtual

Implements gen::Py8InterfaceBase.

Definition at line 42 of file Py8GunBase.cc.

References gen::Py8InterfaceBase::fDecayer, and gen::Py8InterfaceBase::fMasterGen.

{

   // NO MATTER what was this setting below, override it before init 
   // - this is essencial for the PGun mode 
   
   // Key requirement: switch off ProcessLevel, and thereby also PartonLevel.
   fMasterGen->readString("ProcessLevel:all = off");
   fMasterGen->readString("ProcessLevel::resonanceDecays=on");
   fMasterGen->init();
   
   // init decayer
   fDecayer->readString("ProcessLevel:all = off"); // Same trick!
   fDecayer->readString("ProcessLevel::resonanceDecays=on");
   fDecayer->init();
  
   return true;

}

void gen::Py8GunBase::resetEvent ( HepMC::GenEvent *  event )

inline

Definition at line 51 of file Py8GunBase.h.

References genEvent_.

{ genEvent_.reset(event); }

void gen::Py8GunBase::resetEventInfo ( GenEventInfoProduct *  eventInfo )

inline

Definition at line 52 of file Py8GunBase.h.

References genEventInfo_.

{ genEventInfo_.reset(eventInfo); }

bool gen::Py8GunBase::residualDecay ( )

virtual

Definition at line 62 of file Py8GunBase.cc.

References HepMC::Pythia8ToHepMCA::append_event(), event(), gen::Py8InterfaceBase::fDecayer, gen::Py8InterfaceBase::fMasterGen, GenParticle::GenParticle, and query::result.

{

  Event* pythiaEvent = &(fMasterGen->event);
  
  int NPartsBeforeDecays = pythiaEvent->size()-1; // do NOT count the very 1st "system" particle 
                                                  // in Pythia8::Event record; it does NOT even
                                                  // get translated by the HepMCInterface to the
                                                  // HepMC::GenEvent record !!!
  int NPartsAfterDecays = event().get()->particles_size();

  if(NPartsAfterDecays == NPartsBeforeDecays) return true;
  
  HepMC::Pythia8ToHepMCA toHepMCA;
  bool result = true;

  for ( int ipart=NPartsAfterDecays; ipart>NPartsBeforeDecays; ipart-- )
  {

    HepMC::GenParticle* part = event().get()->barcode_to_particle( ipart );

    if ( part->status() == 1 && (fDecayer->particleData).canDecay(part->pdg_id()) )
    {
      fDecayer->event.reset();
      Particle py8part(  part->pdg_id(), 93, 0, 0, 0, 0, 0, 0,
                         part->momentum().x(),
                         part->momentum().y(),
                         part->momentum().z(),
                         part->momentum().t(),
                         part->generated_mass() );
      HepMC::GenVertex* ProdVtx = part->production_vertex();
      py8part.vProd( ProdVtx->position().x(), ProdVtx->position().y(), 
                     ProdVtx->position().z(), ProdVtx->position().t() );
      py8part.tau( (fDecayer->particleData).tau0( part->pdg_id() ) );
      fDecayer->event.append( py8part );
      int nentries = fDecayer->event.size();
      if ( !fDecayer->event[nentries-1].mayDecay() ) continue;
      fDecayer->next();
      int nentries1 = fDecayer->event.size();
      if ( nentries1 <= nentries ) continue; //same number of particles, no decays...
        
      part->set_status(2);
        
      result = toHepMCA.append_event( fDecayer->event, event().get(), part);

    }
  } 

  return result;

}

GenRunInfoProduct& gen::Py8GunBase::runInfo ( )

inlineprotected

Definition at line 68 of file Py8GunBase.h.

References genRunInfo_.

Referenced by Py8GunBase(), and statistics().

{ return genRunInfo_; }

virtual bool gen::Py8GunBase::select ( HepMC::GenEvent *  ) const

inlinevirtual

Definition at line 57 of file Py8GunBase.h.

{ return true;}

void gen::Py8GunBase::setEDMEvent ( edm::Event &  event )

inline

Definition at line 55 of file Py8GunBase.h.

References edmEvent_, and event().

{ edmEvent_ = &event; }

void gen::Py8GunBase::setRandomEngine ( CLHEP::HepRandomEngine *  v )

inline

Definition at line 64 of file Py8GunBase.h.

References gen::Py8InterfaceBase::p8SetRandomEngine().

{ p8SetRandomEngine(v); }

std::vector<std::string> const& gen::Py8GunBase::sharedResources ( ) const

inline

Definition at line 65 of file Py8GunBase.h.

References p8SharedResources.

{ return p8SharedResources; }

void gen::Py8GunBase::statistics ( )

virtual

Reimplemented from gen::Py8InterfaceBase.

Definition at line 148 of file Py8GunBase.cc.

References gen::Py8InterfaceBase::fMasterGen, runInfo(), and GenRunInfoProduct::setInternalXSec().

{

  fMasterGen->stat();

  double xsec = fMasterGen->info.sigmaGen(); // cross section in mb
  xsec *= 1.0e9; // translate to pb (CMS/Gen "convention" as of May 2009)
  runInfo().setInternalXSec(xsec);
  return;

}

Member Data Documentation

edm::Event* gen::Py8GunBase::edmEvent_

private

Definition at line 83 of file Py8GunBase.h.

Referenced by getEDMEvent(), and setEDMEvent().

double gen::Py8GunBase::fMaxPhi

protected

Definition at line 76 of file Py8GunBase.h.

Referenced by gen::Py8EGun::generatePartonsAndHadronize(), gen::Py8JetGun::generatePartonsAndHadronize(), gen::Py8PtGun::generatePartonsAndHadronize(), and Py8GunBase().

double gen::Py8GunBase::fMinPhi

protected

Definition at line 75 of file Py8GunBase.h.

Referenced by gen::Py8EGun::generatePartonsAndHadronize(), gen::Py8JetGun::generatePartonsAndHadronize(), gen::Py8PtGun::generatePartonsAndHadronize(), and Py8GunBase().

std::vector<int> gen::Py8GunBase::fPartIDs

protected

Definition at line 74 of file Py8GunBase.h.

Referenced by gen::Py8EGun::generatePartonsAndHadronize(), gen::Py8JetGun::generatePartonsAndHadronize(), gen::Py8PtGun::generatePartonsAndHadronize(), and Py8GunBase().

std::auto_ptr<HepMC::GenEvent> gen::Py8GunBase::genEvent_

private

Definition at line 80 of file Py8GunBase.h.

Referenced by event(), getGenEvent(), and resetEvent().

std::auto_ptr<GenEventInfoProduct> gen::Py8GunBase::genEventInfo_

private

Definition at line 81 of file Py8GunBase.h.

Referenced by eventInfo(), getGenEventInfo(), and resetEventInfo().

GenRunInfoProduct gen::Py8GunBase::genRunInfo_

private

Definition at line 79 of file Py8GunBase.h.

Referenced by getGenRunInfo(), and runInfo().

const std::vector< std::string > gen::Py8GunBase::p8SharedResources = { edm::SharedResourceNames::kPythia8 }

staticprivate

Definition at line 85 of file Py8GunBase.h.

Referenced by sharedResources().