JTransitTime.cc

Go to the documentation of this file.

 
#include <string>
#include <iostream>
#include <iomanip>
 
#include "TROOT.h"
#include "TFile.h"
#include "TH1D.h"
 
#include "JDetector/JPMTTransitTimeProbability.hh"
#include "JDetector/JPMTParameters.hh"
#include "JDetector/JPMTAnalogueSignalProcessor.hh"
 
#include "Jeep/JParser.hh"
#include "Jeep/JMessage.hh"
 
 
/**
 * \file
 *
 * Example program to histogram PMT transit time distribution.
 * \author mdejong
 */
int main(int argc, char **argv)
{
  using namespace std;
  using namespace JPP;
 
  string         outputFile;
  JPMTParameters parameters;
  int            NPE;
  int            numberOfEvents;
  double         TTS_ns;
  int            debug;
 
  try {
 
    JProperties properties = parameters.getProperties();
 
    JParser<> zap("Example program to histogram PMT transit time distribution.");
 
    zap['o'] = make_field(outputFile)       = "histogram.root";
    zap['P'] = make_field(properties)       = JPARSER::initialised();
    zap['N'] = make_field(NPE)              = 1;
    zap['n'] = make_field(numberOfEvents)   = 0;
    zap['T'] = make_field(TTS_ns)           = 2.0;
    zap['d'] = make_field(debug)            = 0;
 
    zap(argc, argv);
  }
  catch(const exception &error) {
    FATAL(error.what() << endl);
  }
 
  if (debug >= JEEP::debug_t) {
    cout << "PMT parameters:" << endl;
    cout << parameters.getProperties(JEquationParameters("=", "\n", "", "")) << endl;
  }
 
  const JPMTAnalogueSignalProcessor cpu(parameters);
 
  TFile out(outputFile.c_str(), "recreate");
  
  TH1D h1("tts", NULL,  100, -20.0, +20.0);
  TH1D h2("tt2", NULL,  100, -20.0, +20.0);
  TH1D h3("pmt", NULL,  100, -20.0, +20.0);
 
  for (int i = 1; i <= h1.GetNbinsX(); ++i) {
 
    const double t1 = h1.GetBinCenter(i);
 
    h1.SetBinContent(i, getTransitionTimeProbability(t1));
  }
 
  for (int i = 1; i <= h2.GetNbinsX(); ++i) {
 
    const double t1 = h2.GetBinCenter(i);
 
    h2.SetBinContent(i, getTransitionTimeProbability2D(t1));
  }
 
  for (int i = 0; i != numberOfEvents; ++i) {
 
    const double npe = cpu.getRandomAmplitude(NPE);
 
    if (cpu.applyThreshold(npe)) {
 
      const Double_t t1 = cpu.getRiseTime(npe) + gRandom->Gaus(0.0, TTS_ns);
 
      h3.Fill((Double_t) t1);
    }
  }
 
  out.Write();
  out.Close();
}