Inheritance diagram for TrackTimeValueMapProducer:

Public Member Functions
void	produce (edm::StreamID, edm::Event &, const edm::EventSetup &) const override

	TrackTimeValueMapProducer (const edm::ParameterSet &)

	~TrackTimeValueMapProducer () override

Public Member Functions inherited from edm::global::EDProducer<>
	EDProducer ()=default

bool	hasAbilityToProduceInBeginLumis () const final

bool	hasAbilityToProduceInBeginRuns () const final

bool	hasAbilityToProduceInEndLumis () const final

bool	hasAbilityToProduceInEndRuns () const final

bool	wantsGlobalLuminosityBlocks () const final

bool	wantsGlobalRuns () const final

bool	wantsStreamLuminosityBlocks () const final

bool	wantsStreamRuns () const final

Public Member Functions inherited from edm::global::EDProducerBase
	EDProducerBase ()

ModuleDescription const &	moduleDescription () const

	~EDProducerBase () override

Public Member Functions inherited from edm::ProducerBase
void	callWhenNewProductsRegistered (std::function< void(BranchDescription const &)> const &func)

std::vector< edm::ProductResolverIndex > const &	indiciesForPutProducts (BranchType iBranchType) const

	ProducerBase ()

std::vector< edm::ProductResolverIndex > const &	putTokenIndexToProductResolverIndex () const

std::vector< bool > const &	recordProvenanceList () const

void	registerProducts (ProducerBase , ProductRegistry , ModuleDescription const &)

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

void	resolvePutIndicies (BranchType iBranchType, ModuleToResolverIndicies const &iIndicies, std::string const &moduleLabel)

TypeLabelList const &	typeLabelList () const
	used by the fwk to register the list of products of this module More...

	~ProducerBase () noexcept(false) override

Public Member Functions inherited from edm::EDConsumerBase
std::vector< ConsumesInfo >	consumesInfo () const

void	convertCurrentProcessAlias (std::string const &processName)
	Convert "@currentProcess" in InputTag process names to the actual current process name. More...

	EDConsumerBase ()

	EDConsumerBase (EDConsumerBase &&)=default

	EDConsumerBase (EDConsumerBase const &)=delete

ESProxyIndex const *	esGetTokenIndices (edm::Transition iTrans) const

ProductResolverIndexAndSkipBit	indexFrom (EDGetToken, BranchType, TypeID const &) const

void	itemsMayGet (BranchType, std::vector< ProductResolverIndexAndSkipBit > &) const

void	itemsToGet (BranchType, std::vector< ProductResolverIndexAndSkipBit > &) const

std::vector< ProductResolverIndexAndSkipBit > const &	itemsToGetFrom (BranchType iType) const

void	labelsForToken (EDGetToken iToken, Labels &oLabels) const

void	modulesWhoseProductsAreConsumed (std::vector< ModuleDescription const * > &modules, ProductRegistry const &preg, std::map< std::string, ModuleDescription const * > const &labelsToDesc, std::string const &processName) const

EDConsumerBase &	operator= (EDConsumerBase &&)=default

EDConsumerBase const &	operator= (EDConsumerBase const &)=delete

bool	registeredToConsume (ProductResolverIndex, bool, BranchType) const

bool	registeredToConsumeMany (TypeID const &, BranchType) const

ProductResolverIndexAndSkipBit	uncheckedIndexFrom (EDGetToken) const

void	updateLookup (BranchType iBranchType, ProductResolverIndexHelper const &, bool iPrefetchMayGet)

void	updateLookup (eventsetup::ESRecordsToProxyIndices const &)

virtual	~EDConsumerBase () noexcept(false)

Private Member Functions
float	extractTrackVertexTime (const TrackingParticle &, const reco::TransientTrack &) const

Private Attributes
const std::vector< edm::EDGetTokenT< reco::TrackToTrackingParticleAssociator > >	associators_

const float	etaMax_

const float	etaMaxForPtThreshold_

const float	etaMin_

const edm::EDGetTokenT< std::vector< PileupSummaryInfo > >	pileupSummaryInfo_

const float	pMin_

const float	ptMin_

std::vector< std::unique_ptr< const ResolutionModel > >	resolutions_

const edm::EDGetTokenT< TrackingParticleCollection >	trackingParticles_

const edm::EDGetTokenT< TrackingVertexCollection >	trackingVertices_

const edm::EDGetTokenT< edm::View< reco::Track > >	tracks_

const std::string	tracksName_

Additional Inherited Members
Public Types inherited from edm::global::EDProducerBase
typedef EDProducerBase	ModuleType

Public Types inherited from edm::ProducerBase
using	ModuleToResolverIndicies = std::unordered_multimap< std::string, std::tuple< edm::TypeID const , const char , edm::ProductResolverIndex > >

typedef ProductRegistryHelper::TypeLabelList	TypeLabelList

Public Types inherited from edm::EDConsumerBase
typedef ProductLabels	Labels

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

static void	fillDescriptions (ConfigurationDescriptions &descriptions)

static void	prevalidate (ConfigurationDescriptions &descriptions)

Protected Member Functions inherited from edm::ProducerBase
template<class ProductType >
BranchAliasSetterT< ProductType >	produces ()
	declare what type of product will make and with which optional label More...

template<typename ProductType , BranchType B>
BranchAliasSetterT< ProductType >	produces ()

template<typename ProductType , Transition B>
BranchAliasSetterT< ProductType >	produces ()

BranchAliasSetter	produces (const TypeID &id, std::string instanceName=std::string(), bool recordProvenance=true)

template<BranchType B>
BranchAliasSetter	produces (const TypeID &id, std::string instanceName=std::string(), bool recordProvenance=true)

template<Transition B>
BranchAliasSetter	produces (const TypeID &id, std::string instanceName=std::string(), bool recordProvenance=true)

template<typename ProductType , Transition B>
BranchAliasSetterT< ProductType >	produces (std::string instanceName)

template<class ProductType >
BranchAliasSetterT< ProductType >	produces (std::string instanceName)

template<typename ProductType , BranchType B>
BranchAliasSetterT< ProductType >	produces (std::string instanceName)

ProducesCollector	producesCollector ()

Protected Member Functions inherited from edm::EDConsumerBase
EDGetToken	consumes (const TypeToGet &id, edm::InputTag const &tag)

template<typename ProductType , BranchType B = InEvent>
EDGetTokenT< ProductType >	consumes (edm::InputTag const &tag)

template<BranchType B>
EDGetToken	consumes (TypeToGet const &id, edm::InputTag const &tag)

ConsumesCollector	consumesCollector ()
	Use a ConsumesCollector to gather consumes information from helper functions. More...

template<typename ProductType , BranchType B = InEvent>
void	consumesMany ()

void	consumesMany (const TypeToGet &id)

template<BranchType B>
void	consumesMany (const TypeToGet &id)

template<typename ESProduct , typename ESRecord , Transition Tr = Transition::Event>
auto	esConsumes ()

template<typename ESProduct , typename ESRecord , Transition Tr = Transition::Event>
auto	esConsumes (ESInputTag const &tag)

EDGetToken	mayConsume (const TypeToGet &id, edm::InputTag const &tag)

template<BranchType B>
EDGetToken	mayConsume (const TypeToGet &id, edm::InputTag const &tag)

template<typename ProductType , BranchType B = InEvent>
EDGetTokenT< ProductType >	mayConsume (edm::InputTag const &tag)

Detailed Description

Definition at line 41 of file TrackTimeValueMapProducer.cc.

Constructor & Destructor Documentation

◆ TrackTimeValueMapProducer()

TrackTimeValueMapProducer::TrackTimeValueMapProducer ( const edm::ParameterSet & conf )

Definition at line 84 of file TrackTimeValueMapProducer.cc.

     : tracks_(consumes<edm::View<reco::Track>>(conf.getParameter<edm::InputTag>("trackSrc"))),
       tracksName_(conf.getParameter<edm::InputTag>("trackSrc").label()),
       trackingParticles_(consumes<TrackingParticleCollection>(conf.getParameter<edm::InputTag>("trackingParticleSrc"))),
       trackingVertices_(consumes<TrackingVertexCollection>(conf.getParameter<edm::InputTag>("trackingVertexSrc"))),
       pileupSummaryInfo_(
           consumes<std::vector<PileupSummaryInfo>>(conf.getParameter<edm::InputTag>("pileupSummaryInfo"))),
       associators_(edm::vector_transform(
           conf.getParameter<std::vector<edm::InputTag>>("associators"),
           [this](const edm::InputTag &tag) { return this->consumes<reco::TrackToTrackingParticleAssociator>(tag); })),
       etaMin_(conf.getParameter<double>("etaMin")),
       etaMax_(conf.getParameter<double>("etaMax")),
       ptMin_(conf.getParameter<double>("ptMin")),
       pMin_(conf.getParameter<double>("pMin")),
       etaMaxForPtThreshold_(conf.getParameter<double>("etaMaxForPtThreshold")) {
   // setup resolution models
   const std::vector<edm::ParameterSet> &resos = conf.getParameterSetVector("resolutionModels");
   for (const auto &reso : resos) {
     const std::string &name = reso.getParameter<std::string>("modelName");
     resolutions_.emplace_back(ResolutionModelFactory::get()->create(name, reso));
  
     // times and time resolutions for general tracks
     produces<edm::ValueMap<float>>(tracksName_ + name);
     produces<edm::ValueMap<float>>(tracksName_ + name + resolution);
   }
 }

References GlobalPosition_Frontier_DevDB_cff::tag.

◆ ~TrackTimeValueMapProducer()

TrackTimeValueMapProducer::~TrackTimeValueMapProducer ( )

inlineoverride

Definition at line 44 of file TrackTimeValueMapProducer.cc.

44 {}

Member Function Documentation

◆ extractTrackVertexTime()

float TrackTimeValueMapProducer::extractTrackVertexTime	(	const TrackingParticle &	tp,
		const reco::TransientTrack &	tt
	)		const

private

Definition at line 224 of file TrackTimeValueMapProducer.cc.

                                                                                             {
   int pdgid = tp.pdgId();
   const auto &tvertex = tp.parentVertex();
   math::XYZTLorentzVectorD result = tvertex->position();
  
   // account for secondary vertices...
   if (tvertex->nSourceTracks() && tvertex->sourceTracks()[0]->pdgId() == pdgid) {
     auto pvertex = tvertex->sourceTracks()[0]->parentVertex();
     result = pvertex->position();
     while (pvertex->nSourceTracks() && pvertex->sourceTracks()[0]->pdgId() == pdgid) {
       pvertex = pvertex->sourceTracks()[0]->parentVertex();
       result = pvertex->position();
     }
   }
  
   float time = result.T() * CLHEP::second;
   // correct for time of flight from track reference position
   GlobalPoint result_pos(result.x(), result.y(), result.z());
   const auto &tkstate = tt.trajectoryStateClosestToPoint(result_pos);
   float tkphi = tkstate.momentum().phi();
   float tkz = tkstate.position().z();
   float dphi = reco::deltaPhi(tkphi, tt.track().phi());
   float dz = tkz - tt.track().vz();
  
   float radius = 100. * tt.track().pt() / (0.3 * tt.field()->inTesla(GlobalPoint(0, 0, 0)).z());
   float pathlengthrphi = tt.track().charge() * dphi * radius;
  
   float pathlength = std::sqrt(pathlengthrphi * pathlengthrphi + dz * dz);
   float p = tt.track().p();
  
   float speed = std::sqrt(1. / (1. + m_pion / p)) * CLHEP::c_light / CLHEP::cm;  // speed in cm/ns
   float dt = pathlength / speed;
  
   return time - dt;
 }

References reco::deltaPhi(), dt, PVValHelper::dz, AlCaHLTBitMon_ParallelJobs::p, EgammaValidation_cff::pdgid, CosmicsPD_Skims::radius, mps_fire::result, edm::second(), HLTSiStripMonitoring_cff::speed, mathSSE::sqrt(), ntuplemaker::time, cmsswSequenceInfo::tp, and groupFilesInBlocks::tt.

Referenced by produce().

◆ produce()

void TrackTimeValueMapProducer::produce	(	edm::StreamID	sid,
		edm::Event &	evt,
		const edm::EventSetup &	es
	)		const

overridevirtual

Implements edm::global::EDProducerBase.

Definition at line 111 of file TrackTimeValueMapProducer.cc.

                                                                                                      {
   // get sim track associators
   std::vector<edm::Handle<reco::TrackToTrackingParticleAssociator>> associators;
   for (const auto &token : associators_) {
     associators.emplace_back();
     auto &back = associators.back();
     evt.getByToken(token, back);
   }
  
   std::vector<float> generalTrackTimes;
  
   // get track collections
   edm::Handle<edm::View<reco::Track>> TrackCollectionH;
   evt.getByToken(tracks_, TrackCollectionH);
   const edm::View<reco::Track> &TrackCollection = *TrackCollectionH;
  
   // get tracking particle collections
   edm::Handle<TrackingParticleCollection> TPCollectionH;
   evt.getByToken(trackingParticles_, TPCollectionH);
  
   edm::Handle<std::vector<PileupSummaryInfo>> pileupSummaryH;
   evt.getByToken(pileupSummaryInfo_, pileupSummaryH);
  
   // transient track builder
   edm::ESHandle<TransientTrackBuilder> theB;
   es.get<TransientTrackRecord>().get("TransientTrackBuilder", theB);
  
   // associate the reco tracks / gsf Tracks
   std::vector<reco::RecoToSimCollection> associatedTracks;
   for (auto associator : associators) {
     associatedTracks.emplace_back(associator->associateRecoToSim(TrackCollectionH, TPCollectionH));
   }
  
   double sumSimTime = 0.;
   double sumSimTimeSq = 0.;
   int nsim = 0;
   for (const PileupSummaryInfo &puinfo : *pileupSummaryH) {
     if (puinfo.getBunchCrossing() == 0) {
       for (const float &time : puinfo.getPU_times()) {
         double simtime = time;
         sumSimTime += simtime;
         sumSimTimeSq += simtime * simtime;
         ++nsim;
       }
       break;
     }
   }
  
   double meanSimTime = sumSimTime / double(nsim);
   double varSimTime = sumSimTimeSq / double(nsim) - meanSimTime * meanSimTime;
   double rmsSimTime = std::sqrt(std::max(0.1 * 0.1, varSimTime));
   std::normal_distribution<float> gausSimTime(meanSimTime, rmsSimTime);
  
   // get event-based seed for RNG
   unsigned int runNum_uint = static_cast<unsigned int>(evt.id().run());
   unsigned int lumiNum_uint = static_cast<unsigned int>(evt.id().luminosityBlock());
   unsigned int evNum_uint = static_cast<unsigned int>(evt.id().event());
   unsigned int tkChi2_uint = uint32_t(TrackCollection.empty() ? 0 : TrackCollection.refAt(0)->chi2() / 0.01);
   std::uint32_t seed = tkChi2_uint + (lumiNum_uint << 10) + (runNum_uint << 20) + evNum_uint;
   std::mt19937 rng(seed);
  
   for (unsigned itk = 0; itk < TrackCollection.size(); ++itk) {
     const auto tkref = TrackCollection.refAt(itk);
     reco::RecoToSimCollection::const_iterator track_tps = associatedTracks.back().end();
  
     for (const auto &association : associatedTracks) {
       track_tps = association.find(tkref);
       if (track_tps != association.end())
         break;
     }
  
     if (track_tps != associatedTracks.back().end() && track_tps->val.size() == 1) {
       reco::TransientTrack tt = theB->build(*tkref);
       float time = extractTrackVertexTime(*track_tps->val[0].first, tt);
       generalTrackTimes.push_back(time);
     } else {
       float rndtime = gausSimTime(rng);
       generalTrackTimes.push_back(rndtime);
       if (track_tps != associatedTracks.back().end() && track_tps->val.size() > 1) {
         LogDebug("TooManyTracks") << "track matched to " << track_tps->val.size() << " tracking particles!"
                                   << std::endl;
       }
     }
   }
  
   for (const auto &reso : resolutions_) {
     const std::string &name = reso->name();
     std::vector<float> times, resos;
  
     times.reserve(TrackCollection.size());
     resos.reserve(TrackCollection.size());
  
     for (unsigned i = 0; i < TrackCollection.size(); ++i) {
       const reco::Track &tk = TrackCollection[i];
       const float absEta = std::abs(tk.eta());
       bool inAcceptance = absEta < etaMax_ && absEta >= etaMin_ && tk.p() > pMin_ &&
                           (absEta > etaMaxForPtThreshold_ || tk.pt() > ptMin_);
       if (inAcceptance) {
         const float resolution = reso->getTimeResolution(tk);
         std::normal_distribution<float> gausGeneralTime(generalTrackTimes[i], resolution);
         times.push_back(gausGeneralTime(rng));
         resos.push_back(resolution);
       } else {
         times.push_back(0.0f);
         resos.push_back(-1.);
       }
     }
  
     writeValueMap(evt, TrackCollectionH, times, tracksName_ + name);
     writeValueMap(evt, TrackCollectionH, resos, tracksName_ + name + resolution);
   }
 }