hcal::HcalDoubleEndRecProducer Class Reference

Public Member Functions
	HcalDoubleEndRecProducer (const std::string &n, framework::Process &p)
void	configure (framework::config::Parameters &p) override
	Callback for the EventProcessor to configure itself from the given set of parameters.
void	produce (framework::Event &event) override
	Process the event and put new data products into it.
Public Member Functions inherited from framework::Producer
	Producer (const std::string &name, Process &process)
	Class constructor.
virtual void	beforeNewRun (ldmx::RunHeader &header)
	Handle allowing producers to modify run headers before the run begins.
Public Member Functions inherited from framework::EventProcessor
	EventProcessor (const std::string &name, Process &process)
	Class constructor.
virtual	~EventProcessor ()
	Class destructor.
virtual void	onNewRun (const ldmx::RunHeader &runHeader)
	Callback for the EventProcessor to take any necessary action when the run being processed changes.
virtual void	onFileOpen (EventFile &eventFile)
	Callback for the EventProcessor to take any necessary action when a new event input ROOT file is opened.
virtual void	onFileClose (EventFile &eventFile)
	Callback for the EventProcessor to take any necessary action when a event input ROOT file is closed.
virtual void	onProcessStart ()
	Callback for the EventProcessor to take any necessary action when the processing of events starts, such as creating histograms.
virtual void	onProcessEnd ()
	Callback for the EventProcessor to take any necessary action when the processing of events finishes, such as calculating job-summary quantities.
template<class T >
const T &	getCondition (const std::string &condition_name)
	Access a conditions object for the current event.
TDirectory *	getHistoDirectory ()
	Access/create a directory in the histogram file for this event processor to create histograms and analysis tuples.
void	setStorageHint (framework::StorageControl::Hint hint)
	Mark the current event as having the given storage control hint from this module.
void	setStorageHint (framework::StorageControl::Hint hint, const std::string &purposeString)
	Mark the current event as having the given storage control hint from this module and the given purpose string.
int	getLogFrequency () const
	Get the current logging frequency from the process.
int	getRunNumber () const
	Get the run number from the process.
std::string	getName () const
	Get the processor name.
void	createHistograms (const std::vector< framework::config::Parameters > &histos)
	Internal function which is used to create histograms passed from the python configuration @parma histos vector of Parameters that configure histograms to create.

Private Attributes
std::string	pass_name_ {""}
	name of pass of rechits to use
std::string	coll_name_ {"HcalRecHits"}
	name of rechits to use as input
std::string	rec_pass_name_ {""}
	name of pass of rechits to reconstruct
std::string	rec_coll_name_ {"HcalRecHitsDoubleEnd"}
	name of rechits to reconstruct
double	pe_per_mip_
	number of PEs per MIP
double	mip_energy_
	energy per MIP [MeV]
double	clock_cycle_
	length of clock cycle [ns]

Additional Inherited Members
Static Public Member Functions inherited from framework::EventProcessor
static void	declare (const std::string &classname, int classtype, EventProcessorMaker *)
	Internal function which is part of the PluginFactory machinery.
Static Public Attributes inherited from framework::Producer
static const int	CLASSTYPE {1}
	Constant used to track EventProcessor types by the PluginFactory.
Protected Member Functions inherited from framework::EventProcessor
void	abortEvent ()
	Abort the event immediately.
Protected Attributes inherited from framework::EventProcessor
HistogramHelper	histograms_
	Interface class for making and filling histograms.
NtupleManager &	ntuple_ {NtupleManager::getInstance()}
	Manager for any ntuples.
logging::logger	theLog_
	The logger for this EventProcessor.

Detailed Description

Definition at line 16 of file HcalDoubleEndRecProducer.h.

Constructor & Destructor Documentation

HcalDoubleEndRecProducer()

hcal::HcalDoubleEndRecProducer::HcalDoubleEndRecProducer ( const std::string &  n, framework::Process &  p  )

inline

Definition at line 35 of file HcalDoubleEndRecProducer.h.

      : Producer(n, p) {}

Member Function Documentation

configure()

void hcal::HcalDoubleEndRecProducer::configure ( framework::config::Parameters &  parameters )

overridevirtual

Callback for the EventProcessor to configure itself from the given set of parameters.

The parameters a processor has access to are the member variables of the python class in the sequence that has className equal to the EventProcessor class name.

For an example, look at MyProcessor.

Parameters

parameters

Parameters for configuration.

Reimplemented from framework::EventProcessor.

Definition at line 5 of file HcalDoubleEndRecProducer.cxx.

                                                                     {
  pass_name_ = p.getParameter("pass_name", pass_name_);
  coll_name_ = p.getParameter("coll_name", coll_name_);
 
  rec_pass_name_ = p.getParameter("rec_pass_name", pass_name_);
  rec_coll_name_ = p.getParameter("rec_coll_name", coll_name_);
 
  pe_per_mip_ = p.getParameter<double>("pe_per_mip");
  mip_energy_ = p.getParameter<double>("mip_energy");
  clock_cycle_ = p.getParameter<double>("clock_cycle");
}

References clock_cycle_, coll_name_, framework::config::Parameters::getParameter(), mip_energy_, pass_name_, pe_per_mip_, rec_coll_name_, and rec_pass_name_.

produce()

void hcal::HcalDoubleEndRecProducer::produce ( framework::Event &  event )

overridevirtual

Process the event and put new data products into it.

Parameters

event

The Event to process.

Implements framework::Producer.

Definition at line 17 of file HcalDoubleEndRecProducer.cxx.

                                                            {
  const auto& hcalGeometry = getCondition<ldmx::HcalGeometry>(
      ldmx::HcalGeometry::CONDITIONS_OBJECT_NAME);
 
  const auto& conditions{
      getCondition<HcalReconConditions>(HcalReconConditions::CONDITIONS_NAME)};
 
  auto hcalRecHits = event.getCollection<ldmx::HcalHit>(coll_name_, pass_name_);
 
  std::vector<ldmx::HcalHit> doubleHcalRecHits;
 
  // group hcal rechits by the same HcalID
  std::map<ldmx::HcalID, std::vector<ldmx::HcalHit>> hitsByID;
  for (auto const& hit : hcalRecHits) {
    ldmx::HcalID id(hit.getSection(), hit.getLayer(), hit.getStrip());
 
    auto idh = hitsByID.find(id);
    if (idh == hitsByID.end()) {
      hitsByID[id] = std::vector<ldmx::HcalHit>(1, hit);
    } else {
      idh->second.push_back(hit);
    }
  }
 
  // make pairs of hcal rechits indices that belong to the same pulse
  // @TODO: for now we just take the first two indices that have opposite-ends
  //        we do not cover the case where two hits come separated in time
  std::map<ldmx::HcalID, std::pair<int, int>> indicesByID;
  for (auto const& hcalBar : hitsByID) {
    auto id = hcalBar.first;
 
    std::pair<int, int> indices(-1, -1);
    int iHit = 0;
    while (iHit < hcalBar.second.size()) {
      auto hit = hcalBar.second.at(iHit);
 
      ldmx::HcalDigiID digi_id(hit.getSection(), hit.getLayer(), hit.getStrip(),
                               hit.getEnd());
      if (digi_id.isNegativeEnd() && indices.second == -1) {
        indices.second = iHit;
      }
      if (!digi_id.isNegativeEnd() && indices.first == -1) {
        indices.first = iHit;
      }
      iHit++;
    }
    indicesByID[id] = indices;
  }
 
  // reconstruct double-ended hits
  for (auto const& hcalBar : hitsByID) {
    auto id = hcalBar.first;
 
    // get bar position from geometry
    auto position = hcalGeometry.getStripCenterPosition(id);
    const auto orientation{hcalGeometry.getScintillatorOrientation(id)};
 
    // skip non-double-ended layers
    if (id.section() != ldmx::HcalID::HcalSection::BACK) continue;
 
    // get two hits to reconstruct
    auto hitPosEnd = hcalBar.second.at(indicesByID[id].first);
    auto hitNegEnd = hcalBar.second.at(indicesByID[id].second);
 
    // update TOA hit with negative end with mean shift
    ldmx::HcalDigiID digi_id_pos(hitPosEnd.getSection(), hitPosEnd.getLayer(),
                                 hitPosEnd.getStrip(), hitPosEnd.getEnd());
    ldmx::HcalDigiID digi_id_neg(hitNegEnd.getSection(), hitNegEnd.getLayer(),
                                 hitNegEnd.getStrip(), hitNegEnd.getEnd());
    double mean_shift = conditions.toaCalib(digi_id_neg.raw(), 1);
 
    double pos_time = hitPosEnd.getTime();
    double neg_time = hitNegEnd.getTime();
    if (pos_time != 0 || neg_time != 0) {
      neg_time = neg_time - mean_shift;
    }
 
    // update position in strip according to time measurement
    double v =
        299.792 / 1.6;  // velocity of light in polystyrene, n = 1.6 = c/v
    double hitTimeDiff = pos_time - neg_time;
 
    // std::cout << "\n new hit " << std::endl;
    // std::cout << "strip " << id.strip() << " layer " << id.layer() << "
    // center position " << position.X() << " " << position.Y() << " " <<
    // position.Z() << std::endl; std::cout << "hittime pos " << pos_time << "
    // neg " << neg_time << " bar sign " << " diff " << hitTimeDiff <<
    // std::endl;
 
    int position_bar_sign = hitTimeDiff > 0 ? 1 : -1;
    double position_unchanged = 0;
    int isX = 0;
    double position_bar = position_bar_sign * fabs(hitTimeDiff) * v / 2;
    if (orientation ==
        ldmx::HcalGeometry::ScintillatorOrientation::horizontal) {
      position_unchanged = position.X();
      isX = 1;
      position.SetX(position_bar);
    } else {
      position_unchanged = position.Y();
      isX = 0;
      position.SetY(position_bar);
    }
    // std::cout << "position unchanged " << position_unchanged << " isx " <<
    // isX << std::endl; std::cout << "newposition " << position.X() << " " <<
    // position.Y() << " " << position.Z() << std::endl;
 
    // TODO: switch unique hit time for this pulse
    [[maybe_unused]] double hitTime =
        (hitPosEnd.getTime() + hitNegEnd.getTime());
 
    // amplitude and PEs
    double num_mips_equivalent =
        (hitPosEnd.getAmplitude() + hitNegEnd.getAmplitude());
    double PEs = (hitPosEnd.getPE() + hitNegEnd.getPE());
    double reconstructed_energy =
        num_mips_equivalent * pe_per_mip_ * mip_energy_;
 
    // reconstructed Hit
    ldmx::HcalHit recHit;
    recHit.setID(id.raw());
    recHit.setXPos(position.X());
    recHit.setYPos(position.Y());
    recHit.setZPos(position.Z());
    recHit.setSection(id.section());
    recHit.setStrip(id.strip());
    recHit.setLayer(id.layer());
    recHit.setPE(PEs);
    recHit.setMinPE(std::min(hitPosEnd.getPE(), hitNegEnd.getPE()));
    recHit.setAmplitude(num_mips_equivalent);
    recHit.setAmplitudePos(hitPosEnd.getAmplitude());
    recHit.setAmplitudeNeg(hitNegEnd.getAmplitude());
    recHit.setToaPos(hitPosEnd.getTime());
    recHit.setToaNeg(hitNegEnd.getTime());
    recHit.setEnergy(reconstructed_energy);
    recHit.setTime(hitTimeDiff);
    recHit.setTimeDiff(hitPosEnd.getTime() - hitNegEnd.getTime());
    recHit.setPositionUnchanged(position_unchanged, isX);
    doubleHcalRecHits.push_back(recHit);
  }
 
  // add collection to event bus
  event.add(rec_coll_name_, doubleHcalRecHits);
}

References coll_name_, hcal::HcalReconConditions::CONDITIONS_NAME, ldmx::HcalGeometry::CONDITIONS_OBJECT_NAME, ldmx::HcalDigiID::isNegativeEnd(), mip_energy_, pass_name_, pe_per_mip_, ldmx::DetectorID::raw(), rec_coll_name_, ldmx::CalorimeterHit::setAmplitude(), ldmx::HcalHit::setAmplitudeNeg(), ldmx::HcalHit::setAmplitudePos(), ldmx::CalorimeterHit::setEnergy(), ldmx::CalorimeterHit::setID(), ldmx::HcalHit::setLayer(), ldmx::HcalHit::setMinPE(), ldmx::HcalHit::setPE(), ldmx::HcalHit::setPositionUnchanged(), ldmx::HcalHit::setSection(), ldmx::HcalHit::setStrip(), ldmx::CalorimeterHit::setTime(), ldmx::HcalHit::setTimeDiff(), ldmx::HcalHit::setToaNeg(), ldmx::HcalHit::setToaPos(), ldmx::CalorimeterHit::setXPos(), ldmx::CalorimeterHit::setYPos(), and ldmx::CalorimeterHit::setZPos().

Member Data Documentation

clock_cycle_

double hcal::HcalDoubleEndRecProducer::clock_cycle_

private

length of clock cycle [ns]

Definition at line 32 of file HcalDoubleEndRecProducer.h.

Referenced by configure().

coll_name_

std::string hcal::HcalDoubleEndRecProducer::coll_name_ {"HcalRecHits"}

private

name of rechits to use as input

Definition at line 21 of file HcalDoubleEndRecProducer.h.

{"HcalRecHits"};

Referenced by configure(), and produce().

mip_energy_

double hcal::HcalDoubleEndRecProducer::mip_energy_

private

energy per MIP [MeV]

Definition at line 30 of file HcalDoubleEndRecProducer.h.

Referenced by configure(), and produce().

pass_name_

std::string hcal::HcalDoubleEndRecProducer::pass_name_ {""}

private

name of pass of rechits to use

Definition at line 19 of file HcalDoubleEndRecProducer.h.

{""};

Referenced by configure(), and produce().

pe_per_mip_

double hcal::HcalDoubleEndRecProducer::pe_per_mip_

private

number of PEs per MIP

Definition at line 28 of file HcalDoubleEndRecProducer.h.

Referenced by configure(), and produce().

rec_coll_name_

std::string hcal::HcalDoubleEndRecProducer::rec_coll_name_ {"HcalRecHitsDoubleEnd"}

private

name of rechits to reconstruct

Definition at line 25 of file HcalDoubleEndRecProducer.h.

{"HcalRecHitsDoubleEnd"};

Referenced by configure(), and produce().

rec_pass_name_

std::string hcal::HcalDoubleEndRecProducer::rec_pass_name_ {""}

private

name of pass of rechits to reconstruct

Definition at line 23 of file HcalDoubleEndRecProducer.h.

{""};

Referenced by configure().

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The documentation for this class was generated from the following files:

• Hcal/include/Hcal/HcalDoubleEndRecProducer.h
• Hcal/src/Hcal/HcalDoubleEndRecProducer.cxx