AlgoThreshold.cxx

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//
//  AlgoThreshold source
//

#ifndef ALGOTHRESHOLD_CXX
#define ALGOTHRESHOLD_CXX

#include "AlgoThreshold.h"

namespace pmtana{

  //***************************************************************************
  AlgoThreshold::AlgoThreshold(const std::string name) : PMTPulseRecoBase(name)
  //***************************************************************************
  {
    //_adc_thres = 3;
    //_nsigma = 5;
    Reset();
  }

  //************************************************************
  AlgoThreshold::AlgoThreshold(const fhicl::ParameterSet &pset,
  //AlgoThreshold::AlgoThreshold(const ::fcllite::PSet &pset,
                               const std::string name)
    : PMTPulseRecoBase(name)
  //*******************************************************
  {

    _start_adc_thres = pset.get<double>("StartADCThreshold");
    _end_adc_thres = pset.get<double>("EndADCThreshold");
  
    //_nsigma = pset.get<double>("NSigmaThreshold");
    
    _nsigma_start = pset.get<double>("NSigmaThresholdStart");
    _nsigma_end   = pset.get<double>("NSigmaThresholdEnd");

    Reset();

  }

  //***************************************************************
  AlgoThreshold::~AlgoThreshold()
  //***************************************************************
  {}

  //***************************************************************
  void AlgoThreshold::Reset()
  //***************************************************************
  {
    PMTPulseRecoBase::Reset();
  }

  //***************************************************************
  bool AlgoThreshold::RecoPulse(const Waveform_t&wf,
                                const PedestalMean_t& mean_v,
                                const PedestalSigma_t& sigma_v)
  //***************************************************************
  {
    bool fire = false;
    
    double counter=0;

    double ped_mean = mean_v.front();
    double ped_rms  = sigma_v.front();

    //double threshold = ( _adc_thres > (_nsigma * ped_rms) ? _adc_thres : (_nsigma * ped_rms) );
    auto start_threshold = ( _start_adc_thres > (_nsigma_start * ped_rms) ? _start_adc_thres : (_nsigma_start * ped_rms) );
    auto end_threshold   = ( _end_adc_thres   > (_nsigma_end   * ped_rms) ? _end_adc_thres   : (_nsigma_end * ped_rms) );
    
    //    threshold += ped_mean

    start_threshold += ped_mean;
    end_threshold   += ped_mean;

    Reset();

    for(auto const &value : wf){
      
      if( !fire && ((double)value) >= start_threshold ){

        // Found a new pulse

        fire = true;

        _pulse.ped_mean  = ped_mean;
        _pulse.ped_sigma = ped_rms;

        //vic: i move t_start back one, this helps with porch

        _pulse.t_start = counter - 1 > 0 ? counter - 1 : counter;
        //std::cout << "counter: " << counter << " tstart : " << _pulse.t_start << "\n";
        
      }
      
      if( fire && ((double)value) < end_threshold ){
        
        // Found the end of a pulse
        
        fire = false;

        //vic: i move t_start forward one, this helps with tail
        _pulse.t_end = counter < wf.size()  ? counter : counter - 1;
        
        _pulse_v.push_back(_pulse);

        _pulse.reset_param();

      }


      //std::cout << "\tFire=" << fire << std::endl;

      if(fire){

        // Add this adc count to the integral
        
        _pulse.area += ((double)value - (double)ped_mean);

        if(_pulse.peak < ((double)value - (double)ped_mean)) {

          // Found a new maximum
          
          _pulse.peak = ((double)value - (double)ped_mean);

          _pulse.t_max = counter;

        }

      }
    
      counter++;
    }

    if(fire){

      // Take care of a pulse that did not finish within the readout window.    

      fire = false;
   
      _pulse.t_end = counter - 1;
    
      _pulse_v.push_back(_pulse);
    
      _pulse.reset_param();

    }

    return true;

  }
  
}

#endif