JPlotPDF.cc

Go to the documentation of this file.

 
#include <string>
#include <iostream>
#include <fstream>
#include <iomanip>
#include <vector>
 
#include "TROOT.h"
#include "TFile.h"
#include "TH1D.h"
 
#include "JTools/JFunction1D_t.hh"
#include "JTools/JFunctionalMap_t.hh"
#include "JTools/JAbstractHistogram.hh"
#include "JPhysics/JPDFTransformer.hh"
#include "JPhysics/JPDFTable.hh"
#include "JPhysics/JPDFTypes.hh"
#include "JPhysics/JDeltaRays.hh"
#include "JGeometry3D/JAngle3D.hh"
#include "Jeep/JPrint.hh"
#include "Jeep/JParser.hh"
#include "Jeep/JMessage.hh"
#include "JPhysics/JGeane.hh"
 
/**
 * \file
 *
 * Auxiliary program to plot PDF of Cherenkov light from muon using interpolation tables.
 * \author mdejong, bofearraigh
 */
int main(int argc, char **argv)
{
  using namespace std;
  using namespace JPP;
 
  typedef JAbstractHistogram<double> JHistogram_t;
 
  vector<string> inputFile;
  string         outputFile;
  double         E;
  double         R;
  double         z;
  JAngle3D       dir;
  double         TTS_ns;
  JHistogram_t   histogram;
  int            debug;
 
  try { 
 
    JParser<> zap("Auxiliary program to plot PDF of Cherenkov light from muon using interpolation tables.");
 
    zap['f'] = make_field(inputFile);
    zap['o'] = make_field(outputFile)                               = "";
    zap['E'] = make_field(E,         "muon energy at vertex [GeV]") = 1.0;
    zap['R'] = make_field(R,         "distance of approach [m]");
    zap['z'] = make_field(z,         "PMT z-position [m]");
    zap['D'] = make_field(dir,       "(theta, phi) of PMT [rad]");
    zap['T'] = make_field(TTS_ns,    "PMT time smearing [ns]")      = 0.0;
    zap['H'] = make_field(histogram, "histogram binning")           = JHistogram_t();
    zap['d'] = make_field(debug)                                    = 0;
 
    zap(argc, argv);
  }
  catch(const exception &error) {
    FATAL(error.what() << endl);
  }
 
 
  typedef JSplineFunction1S_t                                     JFunction1D_t;
  typedef JMAPLIST<JPolint1FunctionalMap,
                   JPolint1FunctionalGridMap,
                   JPolint1FunctionalGridMap>::maplist            JMapList_t;
  typedef JPDFTable<JFunction1D_t, JMapList_t>                    JPDF_t;
 
  const int N = inputFile.size();
 
  int    type[N];
  JPDF_t pdf [N];
 
  try {
 
    for (int i = 0; i != N; ++i) {
 
      NOTICE("loading input from file " << inputFile[i] << "... " << flush);
      
      type[i] = getPDFType(inputFile[i]);
 
      pdf [i].load(inputFile[i].c_str());
 
      pdf [i].setExceptionHandler(new JFunction1D_t::JDefaultResult(JMATH::zero));
      
      if (TTS_ns > 0.0) {
        pdf[i].blur(TTS_ns);
      }
      
      NOTICE("OK" << endl);
    }
  }
  catch(const JException& error) {
    FATAL(error.what() << endl);
  }
 
  const double z_emission = z - R/getTanThetaC();             // emission point z-position
  const double E_emission = gWater.getE(E, z_emission);       // energy of muon at emission point
 
  if (outputFile == "") {
 
    cout << "enter time (^C to exit) > " << flush;
 
    for (double dt; cin >> dt; ) {
      
      for (int i = 0; i != N; ++i) {
 
        JFunction1D_t::result_type y = pdf[i](R, dir.getTheta(), dir.getPhi(), dt);
 
        if        (is_bremsstrahlung(type[i])) {
          y *= E_emission;
        } else if (is_deltarays(type[i])) {
          y *= JDeltaRays::getEnergyLossFromMuon(E_emission);
        }
      
        cout << setw(2)         << type[i]        << ' '
             << SCIENTIFIC(7,1) << E              << ' '
             << FIXED(5,1)      << R              << ' '
             << FIXED(5,1)      << z              << ' '
             << FIXED(5,2)      << dir.getTheta() << ' '
             << FIXED(5,2)      << dir.getPhi()   << ' '
             << FIXED(5,1)      << dt             << ' '
             << SCIENTIFIC(9,3) << get_value(y)   << endl;
      }
    }
 
    return 0;
  }
 
  TFile out(outputFile.c_str(), "recreate");
    
  int function = 0;
    
  if (inputFile.size() == 1 && getPDFType(inputFile[0]) == DIRECT_LIGHT_FROM_MUON) {
    function = 1;
  }
    
  const double t0   =  0.0;                                   // time [ns]
 
  if (!histogram.is_valid()) {
 
    if (function == 1) {
 
      histogram = JHistogram_t(t0 - 20.0, t0 + 50.0);
 
      histogram.setBinWidth(0.1);
 
    } else {
 
      histogram = JHistogram_t(t0 - 20.0, t0 + 500.0);
 
      histogram.setBinWidth(0.5);
    }
  }
  
  TH1D h0("h0", NULL, histogram.getNumberOfBins(), histogram.getLowerLimit(), histogram.getUpperLimit());
  TH1D h1("h1", NULL, histogram.getNumberOfBins(), histogram.getLowerLimit(), histogram.getUpperLimit());
  TH1D h2("h2", NULL, histogram.getNumberOfBins(), histogram.getLowerLimit(), histogram.getUpperLimit());
    
  for (int i = 1; i <= h0.GetNbinsX(); ++i) {
      
    const double dt = h0.GetBinCenter(i) - t0;
 
    JFunction1D_t::result_type Y = JMATH::zero;
 
    for (int j = 0; j != N; ++j) {
 
      if ( E_emission >= MASS_MUON* (1/SIN_THETA_C_WATER ) ) {      // muon emission energy has to be above Cherenkov threshold
 
        if (z_emission >= 0 && z_emission <= gWater(E)) {     // emission point is between start and end point of muon
          
          JFunction1D_t::result_type y = pdf[j](R, dir.getTheta(), dir.getPhi(), dt);
 
          if        (is_bremsstrahlung(type[j])) {
            y *=     E_emission;
          } else if (is_deltarays(type[j])) {
            y *=     JDeltaRays::getEnergyLossFromMuon(E_emission);
          }
          Y += y;
        }  
      }
    }
 
 
    h0.SetBinContent(i, get_value     (Y));
    h1.SetBinContent(i, get_derivative(Y));
    h2.SetBinContent(i, get_integral  (Y));
  }
 
  out.Write();
  out.Close();
}