hcal::HcalRecProducer Class Reference

Performs basic HCal reconstruction. More...

#include <HcalRecProducer.h>

Public Member Functions
	HcalRecProducer (const std::string &name, framework::Process &process)
	Constructor.
virtual	~HcalRecProducer ()=default
	Destructor.
void	configure (framework::config::Parameters &) override
	Grabs configure parameters from the python config file.
double	getTOA (const ldmx::HgcrocDigiCollection::HgcrocDigi digi, double pedestal, unsigned int iSOI) const
	Gets Time of Arrival with respect to the SOI.
void	produce (framework::Event &event) override
	Produce HcalHits and put them into the event bus using the HcalDigis as input.
Public Member Functions inherited from framework::Producer
	Producer (const std::string &name, Process &process)
	Class constructor.
virtual void	process (Event &event) final
	Processing an event for a Producer is calling produce.
Public Member Functions inherited from framework::EventProcessor
	DECLARE_FACTORY (EventProcessor, EventProcessor *, const std::string &, Process &)
	declare that we have a factory for this class
	EventProcessor (const std::string &name, Process &process)
	Class constructor.
virtual	~EventProcessor ()=default
	Class destructor.
virtual void	beforeNewRun (ldmx::RunHeader &run_header)
	Callback for Producers to add parameters to the run header before conditions are initialized.
virtual void	onNewRun (const ldmx::RunHeader &run_header)
	Callback for the EventProcessor to take any necessary action when the run being processed changes.
virtual void	onFileOpen (EventFile &event_file)
	Callback for the EventProcessor to take any necessary action when a new event input ROOT file is opened.
virtual void	onFileClose (EventFile &event_file)
	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	input_coll_name_
	Digi Collection Name to use as input.
std::string	input_pass_name_
	Digi Pass Name to use as input.
std::string	sim_hit_coll_name_
	simhit collection name
std::string	sim_hit_pass_name_
	simhit pass name
std::string	rec_hit_coll_name_
	output hit collection name
double	mip_energy_
	Energy [MeV] deposited by a MIP.
double	pe_per_mip_
	PEs per MIP.
double	clock_cycle_
	Length of clock cycle [ns].
double	voltage_per_mip_
	Voltage by average MIP.
double	attlength_
	Strip attenuation length [m].
TF1	pulse_func_
	Pulse function.
TGraph	correction_ampl_
	Correction to the pulse's measured amplitude at the peak.
TGraph	correction_toa_
	Correction to the measured TOA relative to the peak.
double	min_ampl_fraction_
	Minimum amplitude fraction to apply amplitude correction.
double	min_ampl_
	Minimum amplitude to apply TOA correction.
int	n_adcs_
	Depth of ADC buffer.
double	rate_up_slope_
	Rate of Up Slope in Pulse Shape [1/ns].
double	time_up_slope_
	Time of Up Slope relative to Pulse Shape Fit [ns].
double	rate_dn_slope_
	Rate of Down Slope in Pulse Shape [1/ns].
double	time_dn_slope_
	Time of Down Slope relative to Pulse Shape Fit [ns].
double	time_peak_
	Time of Peak relative to pulse shape fit [ns].

Additional Inherited Members
Protected Member Functions inherited from framework::EventProcessor
void	abortEvent ()
	Abort the event immediately.
Protected Attributes inherited from framework::EventProcessor
HistogramPool	histograms_
	helper object for making and filling histograms
NtupleManager &	ntuple_ {NtupleManager::getInstance()}
	Manager for any ntuples.
logging::logger	the_log_
	The logger for this EventProcessor.

Detailed Description

Performs basic HCal reconstruction.

Reconstruction is done from the HcalDigi samples. Some hard-coded parameters are used for position and energy calculation.

Definition at line 34 of file HcalRecProducer.h.

Constructor & Destructor Documentation

HcalRecProducer()

hcal::HcalRecProducer::HcalRecProducer	(	const std::string &	name,
		framework::Process &	process )

Constructor.

Definition at line 22 of file HcalRecProducer.cxx.

    : Producer(name, process) {}

Member Function Documentation

configure()

void hcal::HcalRecProducer::configure ( framework::config::Parameters & ps )

overridevirtual

Grabs configure parameters from the python config file.

Reimplemented from framework::EventProcessor.

Definition at line 26 of file HcalRecProducer.cxx.

                                                             {
  // collection names
  input_coll_name_ = ps.get<std::string>("input_coll_name");
  input_pass_name_ = ps.get<std::string>("input_pass_name");
  sim_hit_coll_name_ = ps.get<std::string>("sim_hit_coll_name");
  sim_hit_pass_name_ = ps.get<std::string>("sim_hit_pass_name");
  rec_hit_coll_name_ = ps.get<std::string>("rec_hit_coll_name");
  // parameters
  mip_energy_ = ps.get<double>("mip_energy");
  pe_per_mip_ = ps.get<double>("pe_per_mip");
  clock_cycle_ = ps.get<double>("clock_cycle");
  voltage_per_mip_ = ps.get<double>("voltage_per_mip");
  attlength_ = ps.get<double>("attenuation_length");
  n_adcs_ = ps.get<int>("n_adcs");
 
  // configuring corrections graphs derived on the fly
  // TODO: maybe we should save these as a graph instead?
  rate_up_slope_ = ps.get<double>("rate_up_slope");
  time_up_slope_ = ps.get<double>("time_up_slope");
  rate_dn_slope_ = ps.get<double>("rate_dn_slope");
  time_dn_slope_ = ps.get<double>("time_dn_slope");
  time_peak_ = ps.get<double>("time_peak");
  pulse_func_ =
      TF1("pulseFunc",
          "[0]*((1.0+exp([1]*(-[2]+[3])))*(1.0+exp([5]*(-[6]+[3]))))/"
          "((1.0+exp([1]*(x-[2]+[3]-[4])))*(1.0+exp([5]*(x-[6]+[3]-[4]))))",
          (double)n_adcs_ * clock_cycle_ * -1, (double)n_adcs_ * clock_cycle_);
  pulse_func_.FixParameter(1, rate_up_slope_);
  pulse_func_.FixParameter(2, time_up_slope_);
  pulse_func_.FixParameter(3, time_peak_);
  pulse_func_.FixParameter(5, rate_dn_slope_);
  pulse_func_.FixParameter(6, time_dn_slope_);
  pulse_func_.FixParameter(4, 0);
  pulse_func_.FixParameter(0, 1);
 
  // build amplitude correction (Ampl[t-1]/Ampl[t]) with pulse-shape
  int n = 0;
  for (double t = -clock_cycle_; t < clock_cycle_; t += 0.01) {
    double ampl_t = pulse_func_.Eval(t);
    double ampl_tm1 = pulse_func_.Eval(t - clock_cycle_);
    if (ampl_tm1 > ampl_t) continue;
    correction_ampl_.SetPoint(n, ampl_tm1 / ampl_t, ampl_t);
    if (n == 0) min_ampl_fraction_ = ampl_tm1 / ampl_t;
    n++;
  }
 
  // build TOA timewalk correction with pulse-shape
  double toa_threshold = ps.get<double>("avg_toa_threshold");
  double gain = ps.get<double>("avg_gain");
  double pedestal = ps.get<double>("avg_pedestal");
  n = 0;
  for (double ampl = toa_threshold + 0.1; ampl < 10000; ampl += 0.01) {
    pulse_func_.FixParameter(0, ampl);
    double ampl_t = gain * pedestal + pulse_func_.Eval(0);
    double toa = fabs(pulse_func_.GetX(toa_threshold,
                                       (double)n_adcs_ * clock_cycle_ * -1,
                                       (double)n_adcs_ * clock_cycle_));
    correction_toa_.SetPoint(n, ampl_t, toa);
    if (n == 0) min_ampl_ = ampl_t;
    n++;
  }
  correction_toa_.SetBit(TGraph::kIsSortedX);
}

References attlength_, clock_cycle_, correction_ampl_, correction_toa_, framework::config::Parameters::get(), input_coll_name_, input_pass_name_, min_ampl_, min_ampl_fraction_, mip_energy_, n_adcs_, pe_per_mip_, pulse_func_, rate_dn_slope_, rate_up_slope_, rec_hit_coll_name_, sim_hit_coll_name_, sim_hit_pass_name_, time_dn_slope_, time_peak_, time_up_slope_, and voltage_per_mip_.

getTOA()

double hcal::HcalRecProducer::getTOA	(	const ldmx::HgcrocDigiCollection::HgcrocDigi	digi,
		double	pedestal,
		unsigned int	iSOI ) const

Gets Time of Arrival with respect to the SOI.

Definition at line 90 of file HcalRecProducer.cxx.

                             {
  // get toa relative to the startBX
  double toa_rel_start_bx(0.), max_meas{0.};
  int toa_sample(0), max_sample(0), i_adc(0);
  for (int i_sample{0}; i_sample < digi.size(); i_sample++) {
    auto sample{digi.at(i_sample)};
    if (sample.toa() > 0) {
      toa_rel_start_bx = sample.toa() * (clock_cycle_ / 1024);  // ns
      // find in which ADC sample the TOA was taken
      toa_sample = i_adc;
    }
    if ((sample.adcT() - pedestal) > max_meas) {
      max_meas = (sample.adcT() - pedestal);
      max_sample = i_adc;
    }
    i_adc++;
  }
 
  // time w.r.t to the peak
  double toa = (max_sample - toa_sample) * clock_cycle_ - toa_rel_start_bx;
 
  // time w.r.t to the SOI
  toa += (static_cast<int>(iSOI) - max_sample) * clock_cycle_;
 
  return toa;
}

References ldmx::HgcrocDigiCollection::HgcrocDigi::at(), and clock_cycle_.

Referenced by produce().

produce()

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

overridevirtual

Produce HcalHits and put them into the event bus using the HcalDigis as input.

This function unfolds the digi samples taken by the HGC ROC and reconstructs their energy using knowledge of how the chip operates and the position using HcalGeometry.

Simple calculation of sampling fraction: Thickness per layer: scintillator (0.2cm) + steel (0.25cm) Radiation length and nuclear interaction length: scintillator: X0 = 41.31cm, Lambda = 77.07cm https://pdg.lbl.gov/2017/AtomicNuclearProperties/HTML/polystyrene.html steel X0 = 1.757cm, Lambda = 16.77cm https://pdg.lbl.gov/2012/AtomicNuclearProperties/HTML_PAGES/026.html Prob of EM interaction (e.g. pi0): thickness/X0*100 = (0.2/41.31)/ ((0.2/41.31)

• (0.25/1.757)) ~ 3.3% Prob of Had interaction (e.g. pi+/pi-): = (0.2/77.07)/ ((0.2/77.07) + (0.25/16.77)) ~ 15% Then e.g. for neutron assuming 1/3 pi0 and 2/3 pi+/- composition: sampling fraction ~ (1/3)*3.3.% + (2/3)*15% ~ 11% energy of neutron = energy_deposited / 0.11;

  NOTE: For now, sampling fraction is not applied.

Implements framework::Producer.

Definition at line 119 of file HcalRecProducer.cxx.

                                                   {
  // get the Hcal Geometry
  const auto& hcal_geometry = getCondition<ldmx::HcalGeometry>(
      ldmx::HcalGeometry::CONDITIONS_OBJECT_NAME);
 
  // get the reconstruction parameters
  const auto& the_conditions{
      getCondition<HcalReconConditions>(HcalReconConditions::CONDITIONS_NAME)};
 
  std::vector<ldmx::HcalHit> hcal_rec_hits;
  auto hcal_digis = event.getObject<ldmx::HgcrocDigiCollection>(
      input_coll_name_, input_pass_name_);
  int num_digi_hits = hcal_digis.getNumDigis();
 
  // get sample of interest index
  unsigned int i_soi = hcal_digis.getSampleOfInterestIndex();
 
  // loop through digis
  int i_digi = 0;
  while (i_digi < num_digi_hits) {
    auto digi_posend = hcal_digis.getDigi(i_digi);
 
    // track readout mode for this hit (1 = ADC, 0 = TOT)
    bool is_adc_mode = false;
 
    // ID from first digi sample (which should be in positive end)
    ldmx::HcalDigiID id_posend(digi_posend.id());
    ldmx::HcalID id(id_posend.section(), id_posend.layer(), id_posend.strip());
 
    // position from ID
    auto position = hcal_geometry.getStripCenterPosition(id);
    double half_total_width =
        hcal_geometry.getHalfTotalWidth(id.section(), id.layer());
    double ecal_dx = hcal_geometry.getEcalDx();
    double ecal_dy = hcal_geometry.getEcalDy();
 
    // compute distance to the end of the bar
    // for back Hcal, we take the half of the bar
    // for side Hcal, we take the length of the bar (2*half-width)-Ecal_dxy as
    // an approximation
    float distance_posend, distance_negend, distance_ecal;
    const bool explicit_layout{hcal_geometry.hasExplicitLayout()};
    if (explicit_layout) {
      distance_posend = hcal_geometry.getScintillatorLength(id) / 2;
      distance_negend = distance_posend;
    } else if (id.section() == ldmx::HcalID::HcalSection::BACK) {
      distance_posend = half_total_width;
      distance_negend = half_total_width;
    } else {
      if ((id.section() == ldmx::HcalID::HcalSection::TOP) ||
          (id.section() == ldmx::HcalID::HcalSection::BOTTOM)) {
        distance_ecal = ecal_dx;
      } else {
        distance_ecal = ecal_dy;
      }
      distance_posend = 2 * half_total_width - distance_ecal / 2.;
      distance_negend = distance_ecal / 2.;
    }
 
    // get the estimated voltage and time from digi samples
    double voltage(0.);
    double voltage_min(0.);
    double hit_time(0.);
 
    double ampl_t(0.);
    double ampl_t_posend(0.), ampl_tm1_posend(0.);
    double ampl_t_negend(0.), ampl_tm1_negend(0.);
 
    // Check if the bar is oriented in X or Y
    const auto orientation{hcal_geometry.getScintillatorOrientation(id)};
    int orientation_int = static_cast<int>(orientation);
 
    // double readout
    if (hcal_geometry.isDoubleEnded(id.section())) {
      auto digi_negend = hcal_digis.getDigi(i_digi + 1);
      ldmx::HcalDigiID id_negend(digi_negend.id());
 
      double voltage_posend, voltage_negend;
      // Check if in TOT mode
      if (digi_posend.isTOT()) {
        is_adc_mode = false;
        voltage_posend =
            (digi_posend.tot() - the_conditions.totCalib(id_posend, 0)) *
            the_conditions.totCalib(id_posend, 1);
        voltage_negend =
            (digi_negend.tot() - the_conditions.totCalib(id_negend, 0)) *
            the_conditions.totCalib(id_negend, 1);
      }  // end TOT mode, go to ADC mode
      else {
        is_adc_mode = true;
        ampl_t_posend =
            digi_posend.soi().adcT() - the_conditions.adcPedestal(id_posend);
        ampl_tm1_posend =
            digi_posend.soi().adcTm1() - the_conditions.adcPedestal(id_posend);
        ampl_t_negend =
            digi_negend.soi().adcT() - the_conditions.adcPedestal(id_negend);
        ampl_tm1_negend =
            digi_negend.soi().adcTm1() - the_conditions.adcPedestal(id_negend);
 
        // correct amplitude (amplitude fractions from both ends need to be
        // above the boundary of the correction)
        if (ampl_tm1_posend / ampl_t_posend > min_ampl_fraction_ &&
            ampl_tm1_negend / ampl_t_negend > min_ampl_fraction_) {
          ampl_t_posend *=
              correction_ampl_.Eval(ampl_tm1_posend / ampl_t_posend);
          ampl_t_negend *=
              correction_ampl_.Eval(ampl_tm1_negend / ampl_t_negend);
        }
 
        // set voltage
        voltage_posend = ampl_t_posend * the_conditions.adcGain(id_posend, 0);
        voltage_negend = ampl_t_negend * the_conditions.adcGain(id_negend, 0);
      }  // end ADC mode
 
      // get TOA
      double toa_posend =
          getTOA(digi_posend, the_conditions.adcPedestal(id_posend), i_soi);
      double toa_negend =
          getTOA(digi_negend, the_conditions.adcPedestal(id_negend), i_soi);
 
      // get sign of position along the bar
      int position_bar_sign = (toa_posend - toa_negend) > 0 ? 1 : -1;
 
      // correct TOA
      // amplitudes from both ends need to be above the boundary of the
      // correction otherwise, one TOA gets corrected and the other does not,
      // which results in a large TOA difference and an out-of-bounds position
      if (ampl_t_posend > min_ampl_ && ampl_t_negend > min_ampl_) {
        toa_posend = correction_toa_.Eval(ampl_t_posend) - toa_posend;
        toa_negend = correction_toa_.Eval(ampl_t_negend) - toa_negend;
      }
 
      // get x(y) coordinate from TOA measurement = (dt*v/2)
      // if time_posend < time_negend: position is positive
      // velocity of light in polystyrene, n = 1.6 = c/v
      double v = 299.792 / 1.6;
      double position_bar =
          position_bar_sign * fabs(toa_posend - toa_negend) * v / 2;
      // keep the hit on the bar
      if (explicit_layout) {
        const double half_length{distance_posend};
        position_bar = std::clamp(position_bar, -half_length, half_length);
      }
 
      // reverse voltage attenuation
      // if position along the bar is positive, then the positive end will have
      // less attenuation than the negative end
      // NOTE: For now, reverse attenuation is not applied to the energy
      // deposited since both ends of the bar are summed.
      double att_posend =
          exp(-1. * ((distance_posend - position_bar) / 1000.) / attlength_);
      double att_negend =
          exp(-1. * ((distance_negend + position_bar) / 1000.) / attlength_);
 
      // set voltage as the sum of both bars
      voltage = (voltage_posend + voltage_negend);
      voltage_min = std::min(voltage_posend, voltage_negend);
 
      // set amplitude as the average of both bars (reverse attenuated)
      ampl_t = (ampl_t_posend / att_posend + ampl_t_negend / att_negend) / 2;
 
      // set position along the bar, offset from the strip center if explicit
      if (orientation ==
          ldmx::HcalGeometry::ScintillatorOrientation::horizontal) {
        position.SetX(explicit_layout ? position.X() + position_bar
                                      : position_bar);
      } else {
        position.SetY(explicit_layout ? position.Y() + position_bar
                                      : position_bar);
      }
 
      // set hit time
      // TODO: does this need to revert shift because of propagation of light in
      // polysterene?
      hit_time = fabs(toa_posend + toa_negend) / 2;  // ns
 
      i_digi += 2;
    }  // end double readout loop
    else {  // single readout
      double voltage_i;
      // Check if in TOT mode (for single-ended readout)
      if (digi_posend.isTOT()) {
        is_adc_mode = false;
        // TOT - number of clock ticks that pulse was over threshold
        // this is related to the amplitude of the pulse approximately through a
        // linear drain rate the amplitude of the pulse is related to the energy
        // deposited
 
        // convert the time over threshold into a total energy deposited in the
        // bar (time over threshold [ns] - pedestal) * gain
 
        voltage_i = (digi_posend.tot() - the_conditions.totCalib(id_posend)) *
                    the_conditions.totCalib(id_posend);
 
      }  // end TOT mode, go to ADC mode (for single-ended readout)
      else {
        is_adc_mode = true;
        // ADC mode of readout
        // ADC - voltage measurement at a specific time of the pulse
        ampl_t_posend =
            digi_posend.soi().adcT() - the_conditions.adcPedestal(id_posend);
        ampl_tm1_posend =
            digi_posend.soi().adcTm1() - the_conditions.adcPedestal(id_posend);
        voltage_i = ampl_t_posend * the_conditions.adcGain(id_posend);
      }
 
      // reverse voltage attenuation
      // for now, assume that position along the bar is the half_total_width
      double distance_end =
          id_posend.isNegativeEnd() ? distance_negend : distance_posend;
      double att = exp(
          -1. *
          ((distance_end - (explicit_layout ? 0. : fabs(half_total_width))) /
           1000.) /
          attlength_);
 
      // set voltage
      voltage = voltage_i;
      voltage_min = voltage_i;
 
      // set amplitude (reverse attenuated)
      ampl_t = ampl_t_posend / att;
 
      // get TOA
      double toa =
          getTOA(digi_posend, the_conditions.adcPedestal(id_posend), i_soi);
 
      // correct TOA
      toa = correction_toa_.Eval(ampl_t) - toa;
 
      // set hit time
      hit_time = toa;  // ns
 
      i_digi++;
    }  // end single readout loop
 
    double num_mips_equivalent = voltage / voltage_per_mip_;
    double energy_deposited = num_mips_equivalent * mip_energy_;
 
    // reconstructed energy in the layer (approximate)
    // TODO: need to incorporate corrections if necessary
    double reconstructed_energy = energy_deposited;
 
    int pe_s = num_mips_equivalent * pe_per_mip_;
    int min_pe_s = (voltage_min / voltage_per_mip_) * pe_per_mip_;
 
    // copy over information to rec hit structure in new collection
    ldmx::HcalHit rec_hit;
    rec_hit.setID(id.raw());
    rec_hit.setXPos(position.X());
    rec_hit.setYPos(position.Y());
    rec_hit.setZPos(position.Z());
    rec_hit.setSection(id.section());
    rec_hit.setStrip(id.strip());
    rec_hit.setLayer(id.layer());
    rec_hit.setPE(pe_s);
    rec_hit.setMinPE(min_pe_s);
    rec_hit.setIsADC(is_adc_mode ? 1 : 0);
    rec_hit.setAmplitude((ampl_t / voltage_per_mip_) * mip_energy_);
    rec_hit.setEnergy(reconstructed_energy);
    rec_hit.setTime(hit_time);
    rec_hit.setOrientation(orientation_int);
    hcal_rec_hits.push_back(rec_hit);
  }  // end of digi loop
 
  // mark noise hits if sim hits are available
  if (event.exists(sim_hit_coll_name_, sim_hit_pass_name_)) {
    // hcal sim hits_ exist ==> label which hits_ are real and which are pure
    // noise
    auto hcal_sim_hits{event.getCollection<ldmx::SimCalorimeterHit>(
        sim_hit_coll_name_, sim_hit_pass_name_)};
    std::set<int> real_hits;
    for (auto const& sim_hit : hcal_sim_hits) real_hits.insert(sim_hit.getID());
    for (auto& hit : hcal_rec_hits)
      hit.setNoise(real_hits.find(hit.getID()) == real_hits.end());
  }
 
  // add collection to event bus
  event.add(rec_hit_coll_name_, hcal_rec_hits);
}

References attlength_, hcal::HcalReconConditions::CONDITIONS_NAME, ldmx::HcalGeometry::CONDITIONS_OBJECT_NAME, correction_ampl_, correction_toa_, framework::Event::exists(), framework::EventProcessor::getCondition(), ldmx::HgcrocDigiCollection::getNumDigis(), getTOA(), input_coll_name_, input_pass_name_, ldmx::HcalDigiID::isNegativeEnd(), ldmx::HcalDigiID::layer(), min_ampl_, min_ampl_fraction_, mip_energy_, pe_per_mip_, rec_hit_coll_name_, ldmx::HcalDigiID::section(), ldmx::CalorimeterHit::setAmplitude(), ldmx::CalorimeterHit::setEnergy(), ldmx::CalorimeterHit::setID(), ldmx::HcalHit::setIsADC(), ldmx::HcalHit::setLayer(), ldmx::HcalHit::setMinPE(), ldmx::HcalHit::setOrientation(), ldmx::HcalHit::setPE(), ldmx::HcalHit::setSection(), ldmx::HcalHit::setStrip(), ldmx::CalorimeterHit::setTime(), ldmx::CalorimeterHit::setXPos(), ldmx::CalorimeterHit::setYPos(), ldmx::CalorimeterHit::setZPos(), sim_hit_coll_name_, sim_hit_pass_name_, ldmx::HcalDigiID::strip(), and voltage_per_mip_.

Member Data Documentation

attlength_

double hcal::HcalRecProducer::attlength_

private

Strip attenuation length [m].

Definition at line 96 of file HcalRecProducer.h.

Referenced by configure(), and produce().

clock_cycle_

double hcal::HcalRecProducer::clock_cycle_

private

Length of clock cycle [ns].

Definition at line 90 of file HcalRecProducer.h.

Referenced by configure(), and getTOA().

correction_ampl_

TGraph hcal::HcalRecProducer::correction_ampl_

mutableprivate

Correction to the pulse's measured amplitude at the peak.

The correction is calculated by comparing the amplitude at the sample time (T) over its correct value (1.0) with the ratio between sample T and sample T+25ns.

Definition at line 107 of file HcalRecProducer.h.

Referenced by configure(), and produce().

correction_toa_

TGraph hcal::HcalRecProducer::correction_toa_

mutableprivate

Correction to the measured TOA relative to the peak.

This corrects for the time-walk effect where the time that the front edge of the pulse crosses the TOA threshold walks higher in time as the pulse's amplitude gets smaller. The correction is calculated by comparing the TOA measured relative to the peak (i.e. the time at which the pulse crosses the TOA threshold) with the amplitude at the sample time (T) over its correct value (1.0).

Definition at line 118 of file HcalRecProducer.h.

Referenced by configure(), and produce().

input_coll_name_

std::string hcal::HcalRecProducer::input_coll_name_

private

Digi Collection Name to use as input.

Definition at line 69 of file HcalRecProducer.h.

Referenced by configure(), and produce().

input_pass_name_

std::string hcal::HcalRecProducer::input_pass_name_

private

Digi Pass Name to use as input.

Definition at line 72 of file HcalRecProducer.h.

Referenced by configure(), and produce().

min_ampl_

double hcal::HcalRecProducer::min_ampl_

private

Minimum amplitude to apply TOA correction.

Definition at line 124 of file HcalRecProducer.h.

Referenced by configure(), and produce().

min_ampl_fraction_

double hcal::HcalRecProducer::min_ampl_fraction_

private

Minimum amplitude fraction to apply amplitude correction.

Definition at line 121 of file HcalRecProducer.h.

Referenced by configure(), and produce().

mip_energy_

double hcal::HcalRecProducer::mip_energy_

private

Energy [MeV] deposited by a MIP.

Definition at line 84 of file HcalRecProducer.h.

Referenced by configure(), and produce().

n_adcs_

int hcal::HcalRecProducer::n_adcs_

private

Depth of ADC buffer.

Definition at line 127 of file HcalRecProducer.h.

Referenced by configure().

pe_per_mip_

double hcal::HcalRecProducer::pe_per_mip_

private

PEs per MIP.

Definition at line 87 of file HcalRecProducer.h.

Referenced by configure(), and produce().

pulse_func_

TF1 hcal::HcalRecProducer::pulse_func_

mutableprivate

Pulse function.

Definition at line 99 of file HcalRecProducer.h.

Referenced by configure().

rate_dn_slope_

double hcal::HcalRecProducer::rate_dn_slope_

private

Rate of Down Slope in Pulse Shape [1/ns].

Definition at line 136 of file HcalRecProducer.h.

Referenced by configure().

rate_up_slope_

double hcal::HcalRecProducer::rate_up_slope_

private

Rate of Up Slope in Pulse Shape [1/ns].

Definition at line 130 of file HcalRecProducer.h.

Referenced by configure().

rec_hit_coll_name_

std::string hcal::HcalRecProducer::rec_hit_coll_name_

private

output hit collection name

Definition at line 81 of file HcalRecProducer.h.

Referenced by configure(), and produce().

sim_hit_coll_name_

std::string hcal::HcalRecProducer::sim_hit_coll_name_

private

simhit collection name

Definition at line 75 of file HcalRecProducer.h.

Referenced by configure(), and produce().

sim_hit_pass_name_

std::string hcal::HcalRecProducer::sim_hit_pass_name_

private

simhit pass name

Definition at line 78 of file HcalRecProducer.h.

Referenced by configure(), and produce().

time_dn_slope_

double hcal::HcalRecProducer::time_dn_slope_

private

Time of Down Slope relative to Pulse Shape Fit [ns].

Definition at line 139 of file HcalRecProducer.h.

Referenced by configure().

time_peak_

double hcal::HcalRecProducer::time_peak_

private

Time of Peak relative to pulse shape fit [ns].

Definition at line 142 of file HcalRecProducer.h.

Referenced by configure().

time_up_slope_

double hcal::HcalRecProducer::time_up_slope_

private

Time of Up Slope relative to Pulse Shape Fit [ns].

Definition at line 133 of file HcalRecProducer.h.

Referenced by configure().

voltage_per_mip_

double hcal::HcalRecProducer::voltage_per_mip_

private

Voltage by average MIP.

Definition at line 93 of file HcalRecProducer.h.

Referenced by configure(), and produce().

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

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