#include <GaussianZBeamSpotFilter.h>

Inheritance diagram for GaussianZBeamSpotFilter:

Public Member Functions
	GaussianZBeamSpotFilter (const edm::ParameterSet &)

	~GaussianZBeamSpotFilter ()

Public Member Functions inherited from edm::EDFilter
	EDFilter ()

virtual	~EDFilter ()

Public Member Functions inherited from edm::ProducerBase
	ProducerBase ()

void	registerProducts (ProducerBase , ProductRegistry , ModuleDescription const &)

boost::function< void(const BranchDescription &)>	registrationCallback () const
	used by the fwk to register list of products More...

virtual	~ProducerBase ()

Private Member Functions
virtual bool	filter (edm::Event &, const edm::EventSetup &)

Private Attributes
double	baseSZ_

double	baseZ0_

CLHEP::RandFlat *	fRandom

double	newSZ_

double	newZ0_

edm::InputTag	src_

Additional Inherited Members
Public Types inherited from edm::EDFilter
typedef EDFilter	ModuleType

typedef WorkerT< EDFilter >	WorkerType

Public Types inherited from edm::ProducerBase
typedef ProductRegistryHelper::TypeLabelList	TypeLabelList

Static Public Member Functions inherited from edm::EDFilter
static const std::string &	baseType ()

static void	fillDescriptions (ConfigurationDescriptions &descriptions)

static void	prevalidate (ConfigurationDescriptions &)

Protected Member Functions inherited from edm::EDFilter
CurrentProcessingContext const *	currentContext () const

Protected Member Functions inherited from edm::ProducerBase
template<class TProducer , class TMethod >
void	callWhenNewProductsRegistered (TProducer *iProd, TMethod iMethod)

Detailed Description

Definition at line 22 of file GaussianZBeamSpotFilter.h.

Constructor & Destructor Documentation

GaussianZBeamSpotFilter::GaussianZBeamSpotFilter ( const edm::ParameterSet & iPSet )

explicit

Definition at line 14 of file GaussianZBeamSpotFilter.cc.

References baseSZ_, baseZ0_, edm::hlt::Exception, fRandom, edm::RandomNumberGenerator::getEngine(), edm::Service< T >::isAvailable(), newSZ_, and newZ0_.

                                                                             :  
   src_(iPSet.getParameter<edm::InputTag>("src")),
   baseSZ_(iPSet.getParameter<double>("baseSZ")*cm),
   baseZ0_(iPSet.getParameter<double>("baseZ0")*cm),
   newSZ_(iPSet.getParameter<double>("newSZ")*cm),
   newZ0_(iPSet.getParameter<double>("newZ0")*cm)
 {    
       
   edm::Service<edm::RandomNumberGenerator> rng;
 
   if ( ! rng.isAvailable()) {
 
     throw cms::Exception("Configuration")
       << "The GaussianZBeamSpotFilter requires the RandomNumberGeneratorService\n"
       "which is not present in the configuration file.  You must add the service\n"
       "in the configuration file or remove the modules that require it.";
   }
 
   CLHEP::HepRandomEngine& engine = rng->getEngine();
   fRandom = new CLHEP::RandFlat(engine);
 
   if ( baseZ0_ != newZ0_ ) {
     edm::LogError("InconsistentZPosition") << "Z0 : old " << baseZ0_ << " and new " << newZ0_ << " are different";
   }
 
   if ( baseSZ_ < newSZ_ ) {
     edm::LogError("InconsistentZSigma") << "Sigma Z : old " << baseSZ_ << " smaller than new " << newSZ_ ;
   }
 
 }

GaussianZBeamSpotFilter::~GaussianZBeamSpotFilter ( )

Definition at line 45 of file GaussianZBeamSpotFilter.cc.

45 {}

Member Function Documentation

bool GaussianZBeamSpotFilter::filter	(	edm::Event &	iEvent,
		const edm::EventSetup &	iSetup
	)

privatevirtual

Implements edm::EDFilter.

Definition at line 47 of file GaussianZBeamSpotFilter.cc.

References baseSZ_, baseZ0_, create_public_lumi_plots::exp, fRandom, edm::Event::getByLabel(), newSZ_, newZ0_, and src_.

 { 
 
   bool pass = true;
 
   edm::Handle<edm::HepMCProduct> HepMCEvt ;
    
   iEvent.getByLabel( src_, HepMCEvt ) ;  
 
   //  HepMCEvt->GetEvent()->print();
 
   HepMC::GenEvent::vertex_const_iterator vitr= HepMCEvt->GetEvent()->vertex_range().begin();
 
   if ( vitr != HepMCEvt->GetEvent()->vertex_range().end() ) { 
 
     double vtxZ = (*vitr)->point3d().z();
     double gaussRatio = std::exp(-(vtxZ-newZ0_)*(vtxZ-newZ0_)/(2.0*newSZ_*newSZ_)+(vtxZ-baseZ0_)*(vtxZ-baseZ0_)/(2.0*baseSZ_*baseSZ_));
     if ( fRandom->fire() > gaussRatio ) { pass = false; }
     //    std::cout << "base sigmaZ = " << baseSZ_ << " new sigmaZ = " << newSZ_ << " vtxZ = " << vtxZ << " gaussian ratio = " << gaussRatio << " pass = " << pass << std::endl;
 
   }
 
   return pass;
   
 }