JPMTSignalProcessor.cc

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#include <string>
#include <iostream>
#include <iomanip>

#include "JDetector/JPMTParametersMap.hh"
#include "JDetector/JPMTIdentifier.hh"
#include "JDetector/JPMTAnalogueSignalProcessor.hh"

#include "Jeep/JPrint.hh"
#include "Jeep/JParser.hh"
#include "Jeep/JMessage.hh"


/**
 * \file
 *
 * Example program to test PMT signal processor probability.
 * \author mdejong
 */
int main(int argc, char **argv)
{
  using namespace std;
  using namespace JPP;

  int               numberOfHits;
  JPMTParametersMap parameters;
  JPMTIdentifier    pmt;
  int               NPE;
  double            precision;
  int               debug;

  try {

    JParser<> zap("Example program to test PMT signal processor probability.");

    zap['n'] = make_field(numberOfHits)     = 10000;
    zap['P'] = make_field(parameters)       = JPARSER::initialised();
    zap['p'] = make_field(pmt)              = JPMTIdentifier(-1,0);
    zap['N'] = make_field(NPE)              = 1;
    zap['e'] = make_field(precision)        = 0.02;
    zap['d'] = make_field(debug)            = 3;

    zap(argc, argv);
  }
  catch(const exception &error) {
    FATAL(error.what() << endl);
  }


  const double QEmax = 1.0;

  JPMTParameters buffer = parameters.getPMTParameters(pmt);

  DEBUG("PMT parameters:" << endl);
  DEBUG(buffer.getProperties(JEquationParameters("=", "\n", "", "")) << endl);

  if (buffer.QE > QEmax) {
    
    WARNING("PMT QE set to " << QEmax << endl);

    buffer.QE = QEmax;
  }

  JPMTSignalProcessorInterface* cpu = new JPMTAnalogueSignalProcessor(buffer);
  //JPMTSignalProcessorInterface* cpu = new JPMTSignalProcessorInterface();

  ASSERT(numberOfHits > 0);

  int number_of_hits = 0;

  for (int i = 0; i != numberOfHits; ++i) {

    int npe = 0;
    
    for (int __i = 0; __i != NPE; ++__i) {
      if (cpu->applyQE()) {
        ++npe;
      }
    }

    double x = cpu->getRandomCharge(npe);

    try {

      if (cpu->applyThreshold(x) >= cpu->ABOVE_THRESHOLD) {
        ++number_of_hits;
      }

    } catch (const JValueOutOfRange& exception) {

      DEBUG(exception.what());
      continue;
    }

  }

  const double P = (double) number_of_hits / (double) numberOfHits; 

  DEBUG("Number of generated hits " << setw(8) << right << numberOfHits   << endl);
  DEBUG("Number of accepted  hits " << setw(8) << right << number_of_hits << endl);
  DEBUG("Probability (real) " << FIXED(8,5) << P                                  << endl);
  DEBUG("Probability (calc) " << FIXED(8,5) << cpu->getSurvivalProbability(NPE)   << endl);

  ASSERT(fabs(P - cpu->getSurvivalProbability(NPE)) < precision * cpu->getSurvivalProbability(NPE));

  delete cpu;

  return 0;
}