CscCalibTool.cxx File Reference

#include "CscCalibTool.h"
#include <sstream>
#include <cmath>

Include dependency graph for CscCalibTool.cxx:

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Functions
Double_t	bipfunc (const Double_t *x, const Double_t *par)
Double_t	dualbipfunc (const Double_t *x, const Double_t *par)

Function Documentation

bipfunc()

Double_t bipfunc	(	const Double_t *	x,
		const Double_t *	par )

Definition at line 35 of file CscCalibTool.cxx.

                                                        {
  if (x[0] < par[1]) return 0.;
  Double_t integrationNumber  = par[2]; //12
  Double_t integrationNumber2 = par[3]; //11.66
  //  Double_t samplingTime = par[4]; //50 ns
  Double_t signalWidth = par[4]; //50 ns
  Double_t sum = integrationNumber+integrationNumber2;
  Double_t z0 = 0.5*( (sum+2)
                      -std::sqrt(std::pow(sum+2,2)
                            -4*integrationNumber*(integrationNumber2+1))
                      );
 
  Double_t norm = (1.0 - z0 / (1 + integrationNumber2))
    * std::pow(z0, 1.0 * integrationNumber)
    * std::exp(-z0);
 
  Double_t z = (x[0]-par[1])/signalWidth;//*3.47/samplingTime;
  Double_t amplitude =
    par[0]*(1-z/(1+integrationNumber2))
    *std::pow(z,integrationNumber)*std::exp(-1.0*z)/norm;
  return amplitude;
}

dualbipfunc()

Double_t dualbipfunc	(	const Double_t *	x,
		const Double_t *	par )

Definition at line 58 of file CscCalibTool.cxx.

                                                            {
  return ( bipfunc(x,par) + bipfunc(x,&par[5]) );
}