BeamSpotOnlineProducer Class Reference

#include <BeamSpotOnlineProducer.h>

Inheritance diagram for BeamSpotOnlineProducer:

Public Types
typedef std::vector < edm::ParameterSet >	Parameters
Public Types inherited from edm::EDProducer
typedef EDProducer	ModuleType
typedef WorkerT< EDProducer >	WorkerType
Public Types inherited from edm::ProducerBase
typedef ProductRegistryHelper::TypeLabelList	TypeLabelList

Public Member Functions
	BeamSpotOnlineProducer (const edm::ParameterSet &iConf)
	constructor More...
virtual void	produce (edm::Event &iEvent, const edm::EventSetup &iSetup)
	produce a beam spot class More...
	~BeamSpotOnlineProducer ()
	destructor More...
Public Member Functions inherited from edm::EDProducer
	EDProducer ()
virtual	~EDProducer ()
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 Attributes
bool	changeFrame_
edm::InputTag	scalertag_
edm::InputTag	thel1GtEvmReadoutRecordTag
double	theMaxR2
double	theMaxZ
double	theSetSigmaZ

Additional Inherited Members
Static Public Member Functions inherited from edm::EDProducer
static const std::string &	baseType ()
static void	fillDescriptions (ConfigurationDescriptions &descriptions)
Protected Member Functions inherited from edm::EDProducer
CurrentProcessingContext const *	currentContext () const
Protected Member Functions inherited from edm::ProducerBase
template<class TProducer , class TMethod >
void	callWhenNewProductsRegistered (TProducer *iProd, TMethod iMethod)

Detailed Description

---

class: BeamSpotOnlineProducer.h package: RecoVertex/BeamSpotProducer

author: Francisco Yumiceva, Fermilab (yumic.nosp@m.eva@.nosp@m.fnal..nosp@m.gov)

version

Id:

BeamSpotOnlineProducer.h,v 1.6 2010/07/21 04:23:26 wmtan Exp

---

Definition at line 22 of file BeamSpotOnlineProducer.h.

Member Typedef Documentation

typedef std::vector<edm::ParameterSet> BeamSpotOnlineProducer::Parameters

Definition at line 25 of file BeamSpotOnlineProducer.h.

Constructor & Destructor Documentation

BeamSpotOnlineProducer::BeamSpotOnlineProducer ( const edm::ParameterSet &  iConf )

explicit

constructor

Definition at line 19 of file BeamSpotOnlineProducer.cc.

References edm::ParameterSet::getParameter().

{
  
  scalertag_ = iconf.getParameter<InputTag>("label");
  changeFrame_ = iconf.getParameter<bool>("changeToCMSCoordinates");

  theMaxR2 = iconf.getParameter<double>("maxRadius");
  theMaxR2*=theMaxR2;
  theMaxZ = iconf.getParameter<double>("maxZ");

  theSetSigmaZ = iconf.getParameter<double>("setSigmaZ");
  
  thel1GtEvmReadoutRecordTag = iconf.getParameter<InputTag>("gtEvmLabel");
  
  produces<reco::BeamSpot>();

} 

BeamSpotOnlineProducer::~BeamSpotOnlineProducer

(

)

destructor

Definition at line 37 of file BeamSpotOnlineProducer.cc.

{}

Member Function Documentation

void BeamSpotOnlineProducer::produce ( edm::Event &  iEvent, const edm::EventSetup &  iSetup  )

virtual

produce a beam spot class

Implements edm::EDProducer.

Definition at line 40 of file BeamSpotOnlineProducer.cc.

References align::BeamSpot, BeamSpotOnline::dxdz(), BeamSpotOnline::dydz(), BeamSpotOnline::err_sigma_z(), BeamSpotOnline::err_x(), BeamSpotOnline::err_y(), BeamSpotOnline::err_z(), f, edm::EventSetup::get(), BeamSpotObjects::GetBeamWidthX(), BeamSpotObjects::GetBeamWidthY(), BeamSpotObjects::GetBetaStar(), edm::Event::getByLabel(), BeamSpotObjects::GetCovariance(), BeamSpotObjects::Getdxdz(), BeamSpotObjects::Getdydz(), BeamSpotObjects::GetEmittanceX(), BeamSpotObjects::GetEmittanceY(), BeamSpotObjects::GetSigmaZ(), BeamSpotObjects::GetX(), BeamSpotObjects::GetY(), BeamSpotObjects::GetZ(), i, j, reco::BeamSpot::LHC, edm::ESHandle< class >::product(), edm::Event::put(), query::result, reco::BeamSpot::setBeamWidthY(), reco::BeamSpot::setbetaStar(), reco::BeamSpot::setEmittanceX(), reco::BeamSpot::setEmittanceY(), reco::BeamSpot::setType(), BeamSpotOnline::sigma_z(), reco::BeamSpot::Tracker, BeamSpotOnline::width_x(), BeamSpotOnline::width_y(), BeamSpotOnline::x(), BeamSpotOnline::y(), and BeamSpotOnline::z().

{
  //shout MODE only in stable beam
  bool shoutMODE=false;
  edm::Handle<L1GlobalTriggerEvmReadoutRecord> gtEvmReadoutRecord;
  if (iEvent.getByLabel(thel1GtEvmReadoutRecordTag, gtEvmReadoutRecord)){
    const boost::uint16_t beamModeValue = (gtEvmReadoutRecord->gtfeWord()).beamMode();
    if (beamModeValue == 11) shoutMODE=true;
  }
  else{
    shoutMODE=true;
  }

  // get scalar collection
  Handle<BeamSpotOnlineCollection> handleScaler;
  iEvent.getByLabel( scalertag_, handleScaler);

  // beam spot scalar object
  BeamSpotOnline spotOnline;

  // product is a reco::BeamSpot object
  std::auto_ptr<reco::BeamSpot> result(new reco::BeamSpot);
  
  reco::BeamSpot aSpot;

  bool fallBackToDB=false;
  if (handleScaler->size()!=0){
    // get one element
    spotOnline = * ( handleScaler->begin() );
    
    // in case we need to switch to LHC reference frame
    // ignore for the moment rotations, and translations
    double f = 1.;
    if (changeFrame_) f = -1.;
    
    reco::BeamSpot::Point apoint( f* spotOnline.x(), spotOnline.y(), f* spotOnline.z() );
    
    reco::BeamSpot::CovarianceMatrix matrix;
    matrix(0,0) = spotOnline.err_x()*spotOnline.err_x();
    matrix(1,1) = spotOnline.err_y()*spotOnline.err_y();
    matrix(2,2) = spotOnline.err_z()*spotOnline.err_z();
    matrix(3,3) = spotOnline.err_sigma_z()*spotOnline.err_sigma_z();
    
    double sigmaZ = spotOnline.sigma_z();
    if (theSetSigmaZ>0)
      sigmaZ = theSetSigmaZ;
    
    aSpot = reco::BeamSpot( apoint,
                sigmaZ,
              spotOnline.dxdz(),
                f* spotOnline.dydz(),
                spotOnline.width_x(),
                matrix);
    
    aSpot.setBeamWidthY( spotOnline.width_y() );
    aSpot.setEmittanceX( 0. );
    aSpot.setEmittanceY( 0. );
    aSpot.setbetaStar( 0.) ;
    aSpot.setType( reco::BeamSpot::LHC ); // flag value from scalars
    
    // check if we have a valid beam spot fit result from online DQM
    if ( spotOnline.x() == 0 &&
     spotOnline.y() == 0 &&
     spotOnline.z() == 0 &&
     spotOnline.width_x() == 0 &&
     spotOnline.width_y() == 0 ) 
      {
    if (shoutMODE){
      edm::LogWarning("BeamSpotFromDB") 
      << "Online Beam Spot producer falls back to DB value because the scaler values are zero ";
    }
    fallBackToDB=true;
      }
    double r2=spotOnline.x()*spotOnline.x() + spotOnline.y()*spotOnline.y();
    if (fabs(spotOnline.z())>=theMaxZ || r2>=theMaxR2){
      if (shoutMODE){
    edm::LogError("BeamSpotFromDB") 
      << "Online Beam Spot producer falls back to DB value because the scaler values are too big to be true :"
      <<spotOnline.x()<<" "<<spotOnline.y()<<" "<<spotOnline.z();
      }
      fallBackToDB=true;
    }
  }
  else{
    //empty online beamspot collection: FED data was empty
    //the error should probably have been send at unpacker level
    fallBackToDB=true;
  }
      
  if (fallBackToDB){

    edm::ESHandle< BeamSpotObjects > beamhandle;
    iSetup.get<BeamSpotObjectsRcd>().get(beamhandle);
    const BeamSpotObjects *spotDB = beamhandle.product();

    // translate from BeamSpotObjects to reco::BeamSpot
    reco::BeamSpot::Point apoint( spotDB->GetX(), spotDB->GetY(), spotDB->GetZ() );
  
    reco::BeamSpot::CovarianceMatrix matrix;
    for ( int i=0; i<7; ++i ) {
      for ( int j=0; j<7; ++j ) {
    matrix(i,j) = spotDB->GetCovariance(i,j);
      }
    }
  
    // this assume beam width same in x and y
    aSpot = reco::BeamSpot( apoint,
                spotDB->GetSigmaZ(),
                spotDB->Getdxdz(),
                spotDB->Getdydz(),
                spotDB->GetBeamWidthX(),
                matrix );
    aSpot.setBeamWidthY( spotDB->GetBeamWidthY() );
    aSpot.setEmittanceX( spotDB->GetEmittanceX() );
    aSpot.setEmittanceY( spotDB->GetEmittanceY() );
    aSpot.setbetaStar( spotDB->GetBetaStar() );
    aSpot.setType( reco::BeamSpot::Tracker );

  }
  
  *result = aSpot;

  iEvent.put(result);

}

Member Data Documentation

bool BeamSpotOnlineProducer::changeFrame_

private

Definition at line 38 of file BeamSpotOnlineProducer.h.

edm::InputTag BeamSpotOnlineProducer::scalertag_

private

Definition at line 37 of file BeamSpotOnlineProducer.h.

edm::InputTag BeamSpotOnlineProducer::thel1GtEvmReadoutRecordTag

private

Definition at line 40 of file BeamSpotOnlineProducer.h.

double BeamSpotOnlineProducer::theMaxR2

private

Definition at line 39 of file BeamSpotOnlineProducer.h.

double BeamSpotOnlineProducer::theMaxZ

private

Definition at line 39 of file BeamSpotOnlineProducer.h.

double BeamSpotOnlineProducer::theSetSigmaZ

private

Definition at line 39 of file BeamSpotOnlineProducer.h.