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SiPixelDigitizer.cc
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SiPixelDigitizer.cc
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// -*- C++ -*-
//
// Package: SiPixelDigitizer
// Class: SiPixelDigitizer
//
/**\class SiPixelDigitizer SiPixelDigitizer.cc SimTracker/SiPixelDigitizer/src/SiPixelDigitizer.cc
Description: <one line class summary>
Implementation:
<Notes on implementation>
*/
//
// Original Author: Michele Pioppi-INFN perugia
// Modifications: Freya Blekman - Cornell University
// Created: Mon Sep 26 11:08:32 CEST 2005
//
//
// system include files
#include <memory>
#include <set>
// user include files
#include "SiPixelDigitizer.h"
#include "SiPixelDigitizerAlgorithm.h"
#include "SimDataFormats/TrackingHit/interface/PSimHit.h"
#include "DataFormats/Common/interface/Handle.h"
#include "FWCore/Framework/interface/ConsumesCollector.h"
#include "FWCore/Framework/interface/ESHandle.h"
#include "FWCore/Framework/interface/EventSetup.h"
#include "FWCore/ParameterSet/interface/ParameterSet.h"
#include "DataFormats/SiPixelDigi/interface/PixelDigi.h"
#include "SimDataFormats/TrackerDigiSimLink/interface/PixelDigiSimLink.h"
#include "DataFormats/Common/interface/DetSet.h"
#include "DataFormats/Common/interface/DetSetVector.h"
#include "DataFormats/SiPixelDigi/interface/PixelDigi.h"
#include "DataFormats/SiPixelDigi/interface/PixelDigiCollection.h"
#include "SimDataFormats/TrackingHit/interface/PSimHitContainer.h"
#include "DataFormats/GeometryVector/interface/LocalPoint.h"
#include "DataFormats/GeometryVector/interface/LocalVector.h"
#include "Geometry/CommonDetUnit/interface/GeomDet.h"
#include "Geometry/Records/interface/TrackerDigiGeometryRecord.h"
#include "Geometry/CommonDetUnit/interface/PixelGeomDetUnit.h"
#include "Geometry/TrackerGeometryBuilder/interface/TrackerGeometry.h"
#include "Geometry/CommonTopologies/interface/PixelTopology.h"
#include "Geometry/CommonDetUnit/interface/PixelGeomDetType.h"
#include "DataFormats/TrackerCommon/interface/TrackerTopology.h"
// user include files
#include "FWCore/Framework/interface/Frameworkfwd.h"
#include "FWCore/Framework/interface/EDAnalyzer.h"
#include "FWCore/Framework/interface/Event.h"
#include "FWCore/Framework/interface/MakerMacros.h"
#include "MagneticField/Engine/interface/MagneticField.h"
#include "MagneticField/Records/interface/IdealMagneticFieldRecord.h"
#include "FWCore/MessageLogger/interface/MessageLogger.h"
#include "SimGeneral/MixingModule/interface/PileUpEventPrincipal.h"
#include "DataFormats/SiPixelDetId/interface/PixelFEDChannel.h"
//Random Number
#include "FWCore/ServiceRegistry/interface/Service.h"
#include "FWCore/Utilities/interface/RandomNumberGenerator.h"
#include "FWCore/Utilities/interface/StreamID.h"
#include "FWCore/Utilities/interface/Exception.h"
//
// constants, enums and typedefs
//
//
// static data member definitions
//
//
// constructors and destructor
//
//using namespace std;
namespace cms {
SiPixelDigitizer::SiPixelDigitizer(const edm::ParameterSet& iConfig,
edm::ProducesCollector producesCollector,
edm::ConsumesCollector& iC)
: firstInitializeEvent_(true),
firstFinalizeEvent_(true),
_pixeldigialgo(),
hitsProducer(iConfig.getParameter<std::string>("hitsProducer")),
trackerContainers(iConfig.getParameter<std::vector<std::string> >("RoutList")),
geometryType(iConfig.getParameter<std::string>("PixGeometryType")),
pilotBlades(iConfig.exists("enablePilotBlades") ? iConfig.getParameter<bool>("enablePilotBlades") : false),
NumberOfEndcapDisks(iConfig.exists("NumPixelEndcap") ? iConfig.getParameter<int>("NumPixelEndcap") : 2) {
edm::LogInfo("PixelDigitizer ") << "Enter the Pixel Digitizer";
const std::string alias("simSiPixelDigis");
producesCollector.produces<edm::DetSetVector<PixelDigi> >().setBranchAlias(alias);
producesCollector.produces<edm::DetSetVector<PixelDigiSimLink> >().setBranchAlias(alias + "siPixelDigiSimLink");
for (auto const& trackerContainer : trackerContainers) {
edm::InputTag tag(hitsProducer, trackerContainer);
iC.consumes<std::vector<PSimHit> >(edm::InputTag(hitsProducer, trackerContainer));
}
edm::Service<edm::RandomNumberGenerator> rng;
if (!rng.isAvailable()) {
throw cms::Exception("Configuration")
<< "SiPixelDigitizer 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.";
}
_pixeldigialgo = std::make_unique<SiPixelDigitizerAlgorithm>(iConfig);
if (NumberOfEndcapDisks != 2)
producesCollector.produces<PixelFEDChannelCollection>();
}
SiPixelDigitizer::~SiPixelDigitizer() { edm::LogInfo("PixelDigitizer ") << "Destruct the Pixel Digitizer"; }
//
// member functions
//
void SiPixelDigitizer::accumulatePixelHits(edm::Handle<std::vector<PSimHit> > hSimHits,
size_t globalSimHitIndex,
const unsigned int tofBin,
edm::EventSetup const& iSetup) {
if (hSimHits.isValid()) {
std::set<unsigned int> detIds;
std::vector<PSimHit> const& simHits = *hSimHits.product();
edm::ESHandle<TrackerTopology> tTopoHand;
iSetup.get<TrackerTopologyRcd>().get(tTopoHand);
const TrackerTopology* tTopo = tTopoHand.product();
for (std::vector<PSimHit>::const_iterator it = simHits.begin(), itEnd = simHits.end(); it != itEnd;
++it, ++globalSimHitIndex) {
unsigned int detId = (*it).detUnitId();
if (detIds.insert(detId).second) {
// The insert succeeded, so this detector element has not yet been processed.
assert(detectorUnits[detId]);
if (detectorUnits[detId] &&
detectorUnits[detId]
->type()
.isTrackerPixel()) { // this test could be avoided and changed into a check of pixdet!=0
std::map<unsigned int, PixelGeomDetUnit const*>::iterator itDet = detectorUnits.find(detId);
if (itDet == detectorUnits.end())
continue;
auto pixdet = itDet->second;
assert(pixdet != nullptr);
//access to magnetic field in global coordinates
GlobalVector bfield = pSetup->inTesla(pixdet->surface().position());
LogDebug("PixelDigitizer ") << "B-field(T) at " << pixdet->surface().position()
<< "(cm): " << pSetup->inTesla(pixdet->surface().position());
_pixeldigialgo->accumulateSimHits(
it, itEnd, globalSimHitIndex, tofBin, pixdet, bfield, tTopo, randomEngine_);
}
}
}
}
}
void SiPixelDigitizer::initializeEvent(edm::Event const& e, edm::EventSetup const& iSetup) {
if (firstInitializeEvent_) {
_pixeldigialgo->init(iSetup);
firstInitializeEvent_ = false;
}
// Make sure that the first crossing processed starts indexing the sim hits from zero.
// This variable is used so that the sim hits from all crossing frames have sequential
// indices used to create the digi-sim link (if configured to do so) rather than starting
// from zero for each crossing.
crossingSimHitIndexOffset_.clear();
// Cache random number engine
edm::Service<edm::RandomNumberGenerator> rng;
randomEngine_ = &rng->getEngine(e.streamID());
_pixeldigialgo->initializeEvent();
iSetup.get<TrackerDigiGeometryRecord>().get(geometryType, pDD);
iSetup.get<IdealMagneticFieldRecord>().get(pSetup);
edm::ESHandle<TrackerTopology> tTopoHand;
iSetup.get<TrackerTopologyRcd>().get(tTopoHand);
const TrackerTopology* tTopo = tTopoHand.product();
// FIX THIS! We only need to clear and (re)fill this map when the geometry type IOV changes. Use ESWatcher to determine this.
if (true) { // Replace with ESWatcher
detectorUnits.clear();
for (const auto& iu : pDD->detUnits()) {
unsigned int detId = iu->geographicalId().rawId();
if (iu->type().isTrackerPixel()) {
auto pixdet = dynamic_cast<const PixelGeomDetUnit*>(iu);
assert(pixdet != nullptr);
if (iu->subDetector() ==
GeomDetEnumerators::SubDetector::PixelEndcap) { // true ONLY for the phase 0 pixel deetctor
unsigned int disk = tTopo->layer(detId); // using the generic layer method
//if using pilot blades, then allowing it for current detector only
if ((disk == 3) && ((!pilotBlades) && (NumberOfEndcapDisks == 2)))
continue;
}
detectorUnits.insert(std::make_pair(detId, pixdet));
}
}
}
}
void SiPixelDigitizer::accumulate(edm::Event const& iEvent, edm::EventSetup const& iSetup) {
// Step A: Get Inputs
for (vstring::const_iterator i = trackerContainers.begin(), iEnd = trackerContainers.end(); i != iEnd; ++i) {
edm::Handle<std::vector<PSimHit> > simHits;
edm::InputTag tag(hitsProducer, *i);
iEvent.getByLabel(tag, simHits);
unsigned int tofBin = PixelDigiSimLink::LowTof;
if ((*i).find(std::string("HighTof")) != std::string::npos)
tofBin = PixelDigiSimLink::HighTof;
accumulatePixelHits(simHits, crossingSimHitIndexOffset_[tag.encode()], tofBin, iSetup);
// Now that the hits have been processed, I'll add the amount of hits in this crossing on to
// the global counter. Next time accumulateStripHits() is called it will count the sim hits
// as though they were on the end of this collection.
// Note that this is only used for creating digi-sim links (if configured to do so).
// std::cout << "index offset, current hit count = " << crossingSimHitIndexOffset_[tag.encode()] << ", " << simHits->size() << std::endl;
if (simHits.isValid())
crossingSimHitIndexOffset_[tag.encode()] += simHits->size();
}
}
void SiPixelDigitizer::accumulate(PileUpEventPrincipal const& iEvent,
edm::EventSetup const& iSetup,
edm::StreamID const& streamID) {
// Step A: Get Inputs
for (vstring::const_iterator i = trackerContainers.begin(), iEnd = trackerContainers.end(); i != iEnd; ++i) {
edm::Handle<std::vector<PSimHit> > simHits;
edm::InputTag tag(hitsProducer, *i);
iEvent.getByLabel(tag, simHits);
unsigned int tofBin = PixelDigiSimLink::LowTof;
if ((*i).find(std::string("HighTof")) != std::string::npos)
tofBin = PixelDigiSimLink::HighTof;
accumulatePixelHits(simHits, crossingSimHitIndexOffset_[tag.encode()], tofBin, iSetup);
// Now that the hits have been processed, I'll add the amount of hits in this crossing on to
// the global counter. Next time accumulateStripHits() is called it will count the sim hits
// as though they were on the end of this collection.
// Note that this is only used for creating digi-sim links (if configured to do so).
// std::cout << "index offset, current hit count = " << crossingSimHitIndexOffset_[tag.encode()] << ", " << simHits->size() << std::endl;
if (simHits.isValid())
crossingSimHitIndexOffset_[tag.encode()] += simHits->size();
}
}
// ------------ method called to produce the data ------------
void SiPixelDigitizer::finalizeEvent(edm::Event& iEvent, const edm::EventSetup& iSetup) {
edm::ESHandle<TrackerTopology> tTopoHand;
iSetup.get<TrackerTopologyRcd>().get(tTopoHand);
const TrackerTopology* tTopo = tTopoHand.product();
std::vector<edm::DetSet<PixelDigi> > theDigiVector;
std::vector<edm::DetSet<PixelDigiSimLink> > theDigiLinkVector;
if (firstFinalizeEvent_) {
const unsigned int bunchspace = PileupInfo_->getMix_bunchSpacing();
_pixeldigialgo->init_DynIneffDB(iSetup, bunchspace);
firstFinalizeEvent_ = false;
}
_pixeldigialgo->calculateInstlumiFactor(PileupInfo_.get());
if (_pixeldigialgo->killBadFEDChannels()) {
std::unique_ptr<PixelFEDChannelCollection> PixelFEDChannelCollection_ =
_pixeldigialgo->chooseScenario(PileupInfo_.get(), randomEngine_);
if (PixelFEDChannelCollection_ == nullptr) {
throw cms::Exception("NullPointerError") << "PixelFEDChannelCollection not set in chooseScenario function.\n";
}
iEvent.put(std::move(PixelFEDChannelCollection_));
}
for (const auto& iu : pDD->detUnits()) {
if (iu->type().isTrackerPixel()) {
//
edm::DetSet<PixelDigi> collector(iu->geographicalId().rawId());
edm::DetSet<PixelDigiSimLink> linkcollector(iu->geographicalId().rawId());
_pixeldigialgo->digitize(
dynamic_cast<const PixelGeomDetUnit*>(iu), collector.data, linkcollector.data, tTopo, randomEngine_);
if (!collector.data.empty()) {
theDigiVector.push_back(std::move(collector));
}
if (!linkcollector.data.empty()) {
theDigiLinkVector.push_back(std::move(linkcollector));
}
}
}
// Step C: create collection with the cache vector of DetSet
std::unique_ptr<edm::DetSetVector<PixelDigi> > output(new edm::DetSetVector<PixelDigi>(theDigiVector));
std::unique_ptr<edm::DetSetVector<PixelDigiSimLink> > outputlink(
new edm::DetSetVector<PixelDigiSimLink>(theDigiLinkVector));
// Step D: write output to file
iEvent.put(std::move(output));
iEvent.put(std::move(outputlink));
randomEngine_ = nullptr; // to prevent access outside event
}
} // namespace cms