ECLTimingUtilities.cc

/**************************************************************************
 * basf2 (Belle II Analysis Software Framework)                           *
 * Author: The Belle II Collaboration                                     *
 *                                                                        *
 * See git log for contributors and copyright holders.                    *
 * This file is licensed under LGPL-3.0, see LICENSE.md.                  *
 **************************************************************************/
 
#include <ecl/utility/ECLTimingUtilities.h>
 
#include <math.h>
#include <vector>
 
using namespace Belle2;
using namespace ECL;
 
ECLTimingUtilities::ECLTimingUtilities(bool required) :
  m_loadFromDB(required),
  m_correctionData("", required)
{ }
 
// Time offset as a function of the signal amplitude measured in units of ticks
double ECLTimingUtilities::energyDependentTimeOffsetElectronic(const double amp) const
{
  std::vector<double> params;
  if (m_loadFromDB) {
    // Get energy dependence time offset fit parameters
    params = m_correctionData->getParams();
  } else {
    params = {
      energyDependenceTimeOffsetFitParam_p0,
      energyDependenceTimeOffsetFitParam_p1,
      energyDependenceTimeOffsetFitParam_p2,
      energyDependenceTimeOffsetFitParam_p3,
      energyDependenceTimeOffsetFitParam_p4,
      energyDependenceTimeOffsetFitParam_p5
    };
  }
  return params[0] + pow((params[2] / (amp + params[1])), params[3]) +
         params[4] * exp(-amp / params[5]);
}