GflashShowino Class Reference

#include <GflashShowino.h>

Public Member Functions
void	addEnergyDeposited (double energy)
double	getDepth ()
double	getEnergy ()
double	getEnergyDeposited ()
double	getGlobalTime ()
GflashTrajectory *	getHelix ()
double	getPathLength ()
double	getPathLengthAtShower ()
double	getPathLengthOnEcal ()
Gflash3Vector &	getPosition ()
Gflash3Vector &	getPositionAtShower ()
int	getShowerType ()
double	getStepLengthToHcal ()
double	getStepLengthToOut ()
	GflashShowino ()
void	initialize (int showerType, double energy, double globalTime, double charge, Gflash3Vector &position, Gflash3Vector &momentum, double magneticField)
void	setGlobalTime (double globalTime)
void	setPathLength (double pathLength)
void	setPosition (const Gflash3Vector &position)
void	updateShowino (double deltaStep)
	~GflashShowino ()

Private Member Functions
int	convertShowerType (int fastSimShowerType, const Gflash3Vector &pos)
void	evaluateLengths ()
Gflash3Vector &	simulateFirstInteractionPoint (int showType, Gflash3Vector &pos)

Private Attributes
double	theEnergy
double	theEnergyDeposited
double	theGlobalTime
GflashTrajectory *	theHelix
double	thePathLength
double	thePathLengthAtShower
double	thePathLengthOnEcal
Gflash3Vector	thePosition
Gflash3Vector	thePositionAtShower
int	theShowerType
double	theStepLengthToHcal
double	theStepLengthToOut
GflashTrajectoryPoint	theTrajectoryPoint

Detailed Description

Definition at line 8 of file GflashShowino.h.

Constructor & Destructor Documentation

GflashShowino::GflashShowino

(

)

Definition at line 4 of file GflashShowino.cc.

References theHelix.

    : theShowerType(-1),
      theEnergy(0),
      thePositionAtShower(0, 0, 0),
      thePathLengthAtShower(0),
      thePathLengthOnEcal(0),
      theStepLengthToHcal(0),
      theStepLengthToOut(0),
      thePathLength(0),
      theGlobalTime(0),
      thePosition(0, 0, 0),
      theEnergyDeposited(0) {
  theHelix = new GflashTrajectory;
}

GflashShowino::~GflashShowino

(

)

Definition at line 19 of file GflashShowino.cc.

References theHelix.

{ delete theHelix; }

Member Function Documentation

void GflashShowino::addEnergyDeposited ( double  energy )

inline

Definition at line 44 of file GflashShowino.h.

References relval_parameters_module::energy, and theEnergyDeposited.

Referenced by GflashHadronShowerProfile::hadronicParameterization().

{ theEnergyDeposited += energy; }

int GflashShowino::convertShowerType ( int  fastSimShowerType, const Gflash3Vector &  pos  )

private

void GflashShowino::evaluateLengths ( )

private

Definition at line 64 of file GflashShowino.cc.

References PVValHelper::eta, Gflash::EtaMax, GflashTrajectory::getPathLengthAtRhoEquals(), GflashTrajectory::getPathLengthAtZ(), Gflash::kENCA, Gflash::kESPM, Gflash::kHB, Gflash::kHE, SiStripPI::min, Gflash::RFrontCrystalEB, Gflash::Rmax, Gflash::Rmin, theHelix, thePathLength, thePathLengthAtShower, thePathLengthOnEcal, thePosition, theStepLengthToHcal, theStepLengthToOut, Gflash::ZFrontCrystalEE, Gflash::Zmax, and Gflash::Zmin.

Referenced by initialize().

                                    {
  // thePathLengthAtShower: path Length from the origin to the shower starting
  // point in cm theStepLengthToOut: the total path length from the starting
  // point of
  //                    shower to the maximum distance inside paramerized
  //                    envelopes
  double eta = thePosition.getEta();

  if (std::fabs(eta) < Gflash::EtaMax[Gflash::kESPM]) {
    thePathLengthOnEcal = theHelix->getPathLengthAtRhoEquals(Gflash::RFrontCrystalEB);
    thePathLengthAtShower = theHelix->getPathLengthAtRhoEquals(thePosition.getRho());
    double pathLengthAtHcalBack = theHelix->getPathLengthAtRhoEquals(Gflash::Rmax[Gflash::kHB]);
    if (pathLengthAtHcalBack > 0) {
      theStepLengthToOut = std::min(300., pathLengthAtHcalBack - thePathLengthAtShower);
    } else {
      theStepLengthToOut = 200.;
    }
    theStepLengthToHcal = theHelix->getPathLengthAtRhoEquals(Gflash::Rmin[Gflash::kHB]) - thePathLengthAtShower;

  } else if (std::fabs(eta) < Gflash::EtaMax[Gflash::kENCA]) {
    double zsign = (eta > 0) ? 1.0 : -1.0;
    thePathLengthOnEcal = theHelix->getPathLengthAtZ(zsign * Gflash::ZFrontCrystalEE);
    thePathLengthAtShower = theHelix->getPathLengthAtZ(thePosition.getZ());
    theStepLengthToOut =
        std::min(300., theHelix->getPathLengthAtZ(zsign * Gflash::Zmax[Gflash::kHE]) - thePathLengthAtShower);
    theStepLengthToHcal = theHelix->getPathLengthAtZ(zsign * Gflash::Zmin[Gflash::kHE]) - thePathLengthAtShower;
  } else {
    //@@@extend for HF later
    theStepLengthToOut = 200.0;
  }

  thePathLength = thePathLengthAtShower;
}

double GflashShowino::getDepth ( void  )

inline

Definition at line 39 of file GflashShowino.h.

References thePathLength, and thePathLengthAtShower.

Referenced by GflashHadronShowerProfile::longitudinalProfile().

{ return (thePathLength - thePathLengthAtShower); }

double GflashShowino::getEnergy ( )

inline

Definition at line 27 of file GflashShowino.h.

References theEnergy.

Referenced by GflashHadronShowerProfile::getNumberOfSpots(), GflashHadronShowerProfile::hadronicParameterization(), GflashPiKShowerProfile::loadParameters(), GflashKaonPlusShowerProfile::loadParameters(), GflashKaonMinusShowerProfile::loadParameters(), GflashProtonShowerProfile::loadParameters(), GflashAntiProtonShowerProfile::loadParameters(), and GflashEMShowerProfile::parameterization().

{ return theEnergy; }

double GflashShowino::getEnergyDeposited ( )

inline

Definition at line 38 of file GflashShowino.h.

References theEnergyDeposited.

Referenced by GflashHadronShowerProfile::hadronicParameterization().

{ return theEnergyDeposited; }

double GflashShowino::getGlobalTime ( )

inline

Definition at line 35 of file GflashShowino.h.

References theGlobalTime.

Referenced by GflashHadronShowerProfile::hadronicParameterization(), and GflashEMShowerProfile::parameterization().

{ return theGlobalTime; }

GflashTrajectory* GflashShowino::getHelix ( )

inline

Definition at line 33 of file GflashShowino.h.

References theHelix.

Referenced by GflashEMShowerProfile::getDistanceToOut(), GflashHadronShowerProfile::hadronicParameterization(), CalorimetryManager::HDShowerSimulation(), GflashHadronShowerProfile::hoProfile(), and GflashEMShowerProfile::parameterization().

{ return theHelix; }

double GflashShowino::getPathLength ( )

inline

Definition at line 36 of file GflashShowino.h.

References thePathLength.

Referenced by GflashHadronShowerProfile::hadronicParameterization().

{ return thePathLength; }

double GflashShowino::getPathLengthAtShower ( )

inline

Definition at line 29 of file GflashShowino.h.

References thePathLengthAtShower.

Referenced by GflashEMShowerProfile::getDistanceToOut(), GflashHadronShowerProfile::hadronicParameterization(), CalorimetryManager::HDShowerSimulation(), GflashHadronShowerProfile::longitudinalProfile(), and GflashEMShowerProfile::parameterization().

{ return thePathLengthAtShower; }

double GflashShowino::getPathLengthOnEcal ( )

inline

Definition at line 28 of file GflashShowino.h.

References thePathLengthOnEcal.

Referenced by CalorimetryManager::HDShowerSimulation(), and GflashHadronShowerProfile::longitudinalProfile().

{ return thePathLengthOnEcal; }

Gflash3Vector& GflashShowino::getPosition ( )

inline

Definition at line 37 of file GflashShowino.h.

References thePosition.

Referenced by GflashEMShowerProfile::getDistanceToOut(), GflashHadronShowerProfile::hadronicParameterization(), and GflashHadronShowerProfile::longitudinalProfile().

{ return thePosition; }

Gflash3Vector& GflashShowino::getPositionAtShower ( )

inline

Definition at line 30 of file GflashShowino.h.

References thePositionAtShower.

Referenced by GflashHadronShowerProfile::hadronicParameterization(), GflashProtonShowerProfile::loadParameters(), GflashPiKShowerProfile::loadParameters(), GflashKaonPlusShowerProfile::loadParameters(), GflashKaonMinusShowerProfile::loadParameters(), GflashAntiProtonShowerProfile::loadParameters(), and GflashEMShowerProfile::parameterization().

{ return thePositionAtShower; }

int GflashShowino::getShowerType ( )

inline

Definition at line 26 of file GflashShowino.h.

References theShowerType.

Referenced by GflashHadronShowerProfile::getNumberOfSpots(), GflashProtonShowerProfile::loadParameters(), GflashPiKShowerProfile::loadParameters(), GflashKaonPlusShowerProfile::loadParameters(), GflashKaonMinusShowerProfile::loadParameters(), GflashAntiProtonShowerProfile::loadParameters(), and GflashHadronShowerProfile::longitudinalProfile().

{ return theShowerType; }

double GflashShowino::getStepLengthToHcal ( )

inline

Definition at line 31 of file GflashShowino.h.

References theStepLengthToHcal.

Referenced by GflashHadronShowerProfile::longitudinalProfile().

{ return theStepLengthToHcal; }

double GflashShowino::getStepLengthToOut ( )

inline

Definition at line 32 of file GflashShowino.h.

References theStepLengthToOut.

Referenced by GflashHadronShowerProfile::hadronicParameterization().

{ return theStepLengthToOut; }

void GflashShowino::initialize	(	int	showerType,
		double	energy,
		double	globalTime,
		double	charge,
		Gflash3Vector &	position,
		Gflash3Vector &	momentum,
		double	magneticField
	)

Definition at line 21 of file GflashShowino.cc.

References relval_parameters_module::energy, evaluateLengths(), Gflash::findShowerType(), GflashTrajectory::initializeTrajectory(), position, simulateFirstInteractionPoint(), theEnergy, theEnergyDeposited, theGlobalTime, theHelix, thePosition, thePositionAtShower, and theShowerType.

Referenced by GflashEMShowerProfile::initialize(), and GflashHadronShowerProfile::initialize().

                                                     {
  theEnergy = energy;
  theGlobalTime = globalTime;
  theEnergyDeposited = 0.0;

  // inside the magnetic field (tesla unit);
  theHelix->initializeTrajectory(momentum, position, charge, magneticField);

  if (showerType < 100) {
    thePositionAtShower = position;
    thePosition = thePositionAtShower;
    theShowerType = showerType;

  } else {
    // this input is from FastSimulation
    // 1. simulate the shower starting position
    thePositionAtShower = simulateFirstInteractionPoint(showerType, position);
    thePosition = thePositionAtShower;

    // 2. find shower type depending on where is the shower starting point
    theShowerType = Gflash::findShowerType(thePositionAtShower);
  }

  evaluateLengths();
}

void GflashShowino::setGlobalTime ( double  globalTime )

inline

Definition at line 41 of file GflashShowino.h.

References theGlobalTime.

{ theGlobalTime = globalTime; }

void GflashShowino::setPathLength ( double  pathLength )

inline

Definition at line 42 of file GflashShowino.h.

References thePathLength.

Referenced by GflashHadronShowerProfile::hadronicParameterization().

{ thePathLength = pathLength; }

void GflashShowino::setPosition ( const Gflash3Vector &  position )

inline

Definition at line 43 of file GflashShowino.h.

References position, and thePosition.

{ thePosition = position; }

Gflash3Vector & GflashShowino::simulateFirstInteractionPoint ( int  showType, Gflash3Vector &  pos  )

private

fraction before the crystal, but inside Ecal

Definition at line 98 of file GflashShowino.cc.

References alignCSCRings::e, GflashTrajectory::getGflashTrajectoryPoint(), GflashTrajectory::getPathLengthAtRhoEquals(), GflashTrajectory::getPathLengthAtZ(), GflashTrajectoryPoint::getPosition(), Gflash::kHB, Gflash::kHE, Gflash::LengthCrystalEB, Gflash::LengthCrystalEE, log, Gflash::RFrontCrystalEB, Gflash::Rmax, Gflash::Rmin, funct::sin(), theEnergy, theHelix, thePathLengthOnEcal, theTrajectoryPoint, Gflash::ZFrontCrystalEE, Gflash::Zmax, and Gflash::Zmin.

Referenced by initialize().

                                                                                                          {
  // determine the shower starting point (ssp):
  // the position at the entrance + the mean free path till the inelastic
  // interaction inside calo

  double depthAtShower = 0.0;

  // set thePathLengthOnEcal, the pathLength at the reference (r=123.8 for
  // barrel and z=304.5 for endcap)

  // effective interaction length fitter to ssp from Geant4
  double effectiveLambda = 0.0;
  if (theEnergy > 0.0 && theEnergy < 15) {
    effectiveLambda = 24.6 + 2.6 * std::tanh(3.0 * (std::log(theEnergy) - 1.43));
  } else {
    effectiveLambda = 28.4 + 1.20 * std::tanh(1.5 * (std::log(theEnergy) - 4.3));
  }
  // fraction before the crystal, but inside Ecal
  //  double frac_ssp1
  //  = 1.5196e-01+1.3300e-01*tanh(-4.6971e-01*(std::log(theEnergy)+2.4162e+00));
  // fraction after the crystal, but before Hcal
  double frac_ssp2 = 2.8310e+00 + 2.6766e+00 * tanh(-4.8068e-01 * (std::log(theEnergy) + 3.4857e+00));

  if (fastSimShowerType == 100) {  // fastTrack.onEcal() == 1

    //    double rhoTemp = Gflash::ROffCrystalEB +
    //    Gflash::LengthCrystalEB*std::sin(position.getTheta());
    double rhoTemp = Gflash::LengthCrystalEB * std::sin(position.getTheta());
    thePathLengthOnEcal = theHelix->getPathLengthAtRhoEquals(Gflash::RFrontCrystalEB);
    double pathLengthAt2 = theHelix->getPathLengthAtRhoEquals(Gflash::RFrontCrystalEB + rhoTemp);
    double pathLengthAt3 = theHelix->getPathLengthAtRhoEquals(Gflash::Rmin[Gflash::kHB]);

    /*
    if(CLHEP::HepUniformRand() < frac_ssp1 ) {
      depthAtShower =
    (pathLengthAt1-thePathLengthOnEcal)*CLHEP::HepUniformRand();
    }
    else {
    */
    // inside the crystal
    //      depthAtShower = (pathLengthAt1-thePathLengthOnEcal) -
    //      effectiveLambda*log(CLHEP::HepUniformRand());
    depthAtShower = -effectiveLambda * log(CLHEP::HepUniformRand());
    // after the crystal
    if (depthAtShower > (pathLengthAt2 - thePathLengthOnEcal)) {
      // before Hcal
      if (CLHEP::HepUniformRand() < frac_ssp2) {
        depthAtShower =
            (pathLengthAt2 - thePathLengthOnEcal) + (pathLengthAt3 - pathLengthAt2) * CLHEP::HepUniformRand();
      }
      // inside Hcal
      else {
        depthAtShower = (pathLengthAt3 - thePathLengthOnEcal) - effectiveLambda * log(CLHEP::HepUniformRand());
        // check whether the shower starts beyond HB
        double pathLengthAt4 = theHelix->getPathLengthAtRhoEquals(Gflash::Rmax[Gflash::kHB]);
        if (depthAtShower > (pathLengthAt4 - thePathLengthOnEcal)) {
          depthAtShower = (pathLengthAt4 - pathLengthAt3) * CLHEP::HepUniformRand();
        }
      }
    }
    //    }
  } else if (fastSimShowerType == 101) {  // fastTrack.onEcal() == 2

    double zTemp = Gflash::LengthCrystalEE;
    double zsign = (position.getEta() > 0) ? 1.0 : -1.0;

    thePathLengthOnEcal = theHelix->getPathLengthAtZ(zsign * Gflash::ZFrontCrystalEE);
    double pathLengthAt2 = theHelix->getPathLengthAtZ(zsign * (Gflash::ZFrontCrystalEE + zTemp));
    double pathLengthAt3 = theHelix->getPathLengthAtZ(zsign * Gflash::Zmin[Gflash::kHE]);

    /*
    if(CLHEP::HepUniformRand() <  frac_ssp1 ) {
      depthAtShower =
    (pathLengthAt1-thePathLengthOnEcal)*CLHEP::HepUniformRand();
    }
    else {
    */
    //      depthAtShower =
    //      (pathLengthAt1-thePathLengthOnEcal)-effectiveLambda*std::log(CLHEP::HepUniformRand());
    depthAtShower = -effectiveLambda * std::log(CLHEP::HepUniformRand());

    if (depthAtShower > (pathLengthAt2 - thePathLengthOnEcal)) {
      if (CLHEP::HepUniformRand() < frac_ssp2) {
        depthAtShower =
            (pathLengthAt2 - thePathLengthOnEcal) + (pathLengthAt3 - pathLengthAt2) * CLHEP::HepUniformRand();
      } else {
        depthAtShower = (pathLengthAt3 - thePathLengthOnEcal) - effectiveLambda * std::log(CLHEP::HepUniformRand());
        // shower starts beyond HE
        double pathLengthAt4 = theHelix->getPathLengthAtZ(zsign * Gflash::Zmax[Gflash::kHE]);
        if (depthAtShower > (pathLengthAt4 - thePathLengthOnEcal)) {
          depthAtShower = (pathLengthAt4 - pathLengthAt3) * CLHEP::HepUniformRand();
        }
      }
    }
    //    }
  } else {
    depthAtShower = 0.0;
  }

  double pathLength = thePathLengthOnEcal + depthAtShower;

  theHelix->getGflashTrajectoryPoint(theTrajectoryPoint, pathLength);

  // return the initial showino position at the shower starting position
  return theTrajectoryPoint.getPosition();
}

void GflashShowino::updateShowino

(

double

deltaStep

)

Definition at line 53 of file GflashShowino.cc.

References GflashTrajectory::getGflashTrajectoryPoint(), GflashTrajectoryPoint::getPosition(), theEnergy, theGlobalTime, theHelix, thePathLength, and thePosition.

Referenced by GflashHadronShowerProfile::hadronicParameterization().

                                                  {
  thePathLength += deltaStep;
  // trajectory point of showino along the shower depth at the pathLength
  GflashTrajectoryPoint trajectoryShowino;
  theHelix->getGflashTrajectoryPoint(trajectoryShowino, thePathLength);

  thePosition = trajectoryShowino.getPosition();

  theGlobalTime += (theEnergy / 100.0) * deltaStep / 30.0;  //@@@calculate exact time change in nsec
}

Member Data Documentation

double GflashShowino::theEnergy

private

Definition at line 54 of file GflashShowino.h.

Referenced by getEnergy(), initialize(), simulateFirstInteractionPoint(), and updateShowino().

double GflashShowino::theEnergyDeposited

private

Definition at line 65 of file GflashShowino.h.

Referenced by addEnergyDeposited(), getEnergyDeposited(), and initialize().

double GflashShowino::theGlobalTime

private

Definition at line 63 of file GflashShowino.h.

Referenced by getGlobalTime(), initialize(), setGlobalTime(), and updateShowino().

GflashTrajectory* GflashShowino::theHelix

private

Definition at line 67 of file GflashShowino.h.

Referenced by evaluateLengths(), getHelix(), GflashShowino(), initialize(), simulateFirstInteractionPoint(), updateShowino(), and ~GflashShowino().

double GflashShowino::thePathLength

private

Definition at line 62 of file GflashShowino.h.

Referenced by evaluateLengths(), getDepth(), getPathLength(), setPathLength(), and updateShowino().

double GflashShowino::thePathLengthAtShower

private

Definition at line 56 of file GflashShowino.h.

Referenced by evaluateLengths(), getDepth(), and getPathLengthAtShower().

double GflashShowino::thePathLengthOnEcal

private

Definition at line 57 of file GflashShowino.h.

Referenced by evaluateLengths(), getPathLengthOnEcal(), and simulateFirstInteractionPoint().

Gflash3Vector GflashShowino::thePosition

private

Definition at line 64 of file GflashShowino.h.

Referenced by evaluateLengths(), getPosition(), initialize(), setPosition(), and updateShowino().

Gflash3Vector GflashShowino::thePositionAtShower

private

Definition at line 55 of file GflashShowino.h.

Referenced by getPositionAtShower(), and initialize().

int GflashShowino::theShowerType

private

Definition at line 53 of file GflashShowino.h.

Referenced by getShowerType(), and initialize().

double GflashShowino::theStepLengthToHcal

private

Definition at line 58 of file GflashShowino.h.

Referenced by evaluateLengths(), and getStepLengthToHcal().

double GflashShowino::theStepLengthToOut

private

Definition at line 59 of file GflashShowino.h.

Referenced by evaluateLengths(), and getStepLengthToOut().

GflashTrajectoryPoint GflashShowino::theTrajectoryPoint

private

Definition at line 68 of file GflashShowino.h.

Referenced by simulateFirstInteractionPoint().