LowEnergyFastSimParam Class Reference

#include <LowEnergyFastSimParam.h>

Public Member Functions
G4double	GetInPointEnergyFraction (G4double energy) const
G4double	GetRadius (G4double energy) const
G4double	GetZ () const

Detailed Description

Definition at line 8 of file LowEnergyFastSimParam.h.

Member Function Documentation

GetInPointEnergyFraction()

G4double LowEnergyFastSimParam::GetInPointEnergyFraction ( G4double  energy ) const

inline

Definition at line 10 of file LowEnergyFastSimParam.h.

References a0, isotrackTrainRegressor::a1, isotrackTrainRegressor::a2, ALPAKA_ACCELERATOR_NAMESPACE::brokenline::constexpr(), SiPixelPhase1Clusters_cfi::e3, and HBHEDarkening_cff::energy.

Referenced by LowEnergyFastSimModel::DoIt().

                                                           {
    // normalisation of fit parameters to have the result
    constexpr const G4double a0 = 1.02186764;
    constexpr const G4double a1 = 2.14064635e-02 / a0;
    constexpr const G4double a2 = 1.96988997e-04 / a0;
    constexpr const G4double a3 = -6.42310317e-07 / a0;
    const G4double e2 = energy * energy;
    const G4double e3 = e2 * energy;
    return a3 * e3 + a2 * e2 - a1 * energy + 1.0;
  }

GetRadius()

G4double LowEnergyFastSimParam::GetRadius ( G4double  energy ) const

inline

Definition at line 21 of file LowEnergyFastSimParam.h.

References ALPAKA_ACCELERATOR_NAMESPACE::brokenline::constexpr(), HBHEDarkening_cff::energy, diffTwoXMLs::r1, diffTwoXMLs::r2, and mathSSE::sqrt().

Referenced by LowEnergyFastSimModel::DoIt().

                                            {
    constexpr const G4double r1 = 156.52094133;
    constexpr const G4double r2 = -1.02220543;
    const G4double r0 = r1 + r2 * energy;
    return std::sqrt(r0 / G4UniformRand() - r0);
  }

GetZ()

G4double LowEnergyFastSimParam::GetZ ( void  ) const

inline

Definition at line 28 of file LowEnergyFastSimParam.h.

References isotrackApplyRegressor::alpha, ALPAKA_ACCELERATOR_NAMESPACE::brokenline::constexpr(), and submitPVValidationJobs::t.

Referenced by LowEnergyFastSimModel::DoIt().

                        {
    constexpr const G4double alpha = 1.0 / 0.02211515;
    constexpr const G4double t = 0.66968625;
    return -G4Log(G4UniformRand()) * alpha + t;
  }