MaterialEffectsSimulator Class Reference

#include <MaterialEffectsSimulator.h>

Inheritance diagram for MaterialEffectsSimulator:

Public Types
typedef std::vector < RawParticle > ::const_iterator	RHEP_const_iter

Public Member Functions
RHEP_const_iter	beginDaughters () const
	Returns const iterator to the beginning of the daughters list. More...
int	closestDaughterId ()
	The id of the closest charged daughter (filled for nuclear interactions only) More...
double	eMass () const
	Electron mass in GeV/c2. More...
RHEP_const_iter	endDaughters () const
	Returns const iterator to the end of the daughters list. More...
double	excitE () const
	Mean excitation energy (in GeV) More...
	MaterialEffectsSimulator (double A=28.0855, double Z=14.0000, double density=2.329, double radLen=9.360)
unsigned	nDaughters () const
	Returns the number of daughters. More...
XYZVector	orthogonal (const XYZVector &) const
	A vector orthogonal to another one (because it's not in XYZTLorentzVector) More...
double	radLenIncm () const
	One radiation length in cm. More...
double	rho () const
	Density in g/cm3. More...
virtual void	save ()
	Used by NuclearInteractionSimulator to save last sampled event. More...
void	setNormalVector (const GlobalVector &normal)
	Sets the vector normal to the surface traversed. More...
double	theA () const
	A. More...
double	theZ () const
	Z. More...
void	updateState (ParticlePropagator &myTrack, double radlen, RandomEngineAndDistribution const *)
	Compute the material effect (calls the sub class) More...
virtual	~MaterialEffectsSimulator ()

Protected Attributes
std::vector< RawParticle >	_theUpdatedState
double	A
double	density
double	radLen
double	radLengths
int	theClosestChargedDaughterId
GlobalVector	theNormalVector
double	Z

Private Member Functions
virtual void	compute (ParticlePropagator &Particle, RandomEngineAndDistribution const *)=0
	Overloaded in all material effects updtators. More...
double	radiationLength () const
	Returns the fraction of radiation lengths traversed. More...

Detailed Description

This is the generic class for Material Effects in the tracker material, from which FamosPairProductionSimulator, FamosBremsstrahlungSimulator, FamosEnergyLossSimulator and FamosMultipleScatteringSimulator inherit. It determines the fraction of radiation lengths traversed by the particle in this tracker layer, defines the tracker layer characteristics (hmmm, 100% Silicon, very crude, but what can we do?) and returns a list of new RawParticles if needed.

Author

Stephan Wynhoff, Florian Beaudette, Patrick Janot $Date: Last update 8-Jan-2004

Definition at line 25 of file MaterialEffectsSimulator.h.

Member Typedef Documentation

typedef std::vector<RawParticle>::const_iterator MaterialEffectsSimulator::RHEP_const_iter

Definition at line 27 of file MaterialEffectsSimulator.h.

Constructor & Destructor Documentation

MaterialEffectsSimulator::MaterialEffectsSimulator	(	double	A = 28.0855,
		double	Z = 14.0000,
		double	density = 2.329,
		double	radLen = 9.360
	)

Definition at line 9 of file MaterialEffectsSimulator.cc.

References _theUpdatedState.

    : A(A), Z(Z), density(density), radLen(radLen) {
  _theUpdatedState.clear();
}

MaterialEffectsSimulator::~MaterialEffectsSimulator ( )

virtual

Definition at line 14 of file MaterialEffectsSimulator.cc.

References _theUpdatedState.

                                                    {
  // Don't delete the objects contained in the list
  _theUpdatedState.clear();
}

Member Function Documentation

RHEP_const_iter MaterialEffectsSimulator::beginDaughters ( ) const

inline

Returns const iterator to the beginning of the daughters list.

Definition at line 54 of file MaterialEffectsSimulator.h.

References _theUpdatedState.

Referenced by MaterialEffects::interact().

{ return _theUpdatedState.begin(); }

int MaterialEffectsSimulator::closestDaughterId ( )

inline

The id of the closest charged daughter (filled for nuclear interactions only)

Definition at line 69 of file MaterialEffectsSimulator.h.

References theClosestChargedDaughterId.

Referenced by MaterialEffects::interact().

{ return theClosestChargedDaughterId; }

virtual void MaterialEffectsSimulator::compute ( ParticlePropagator &  Particle, RandomEngineAndDistribution const *    )

privatepure virtual

Overloaded in all material effects updtators.

Implemented in MuonBremsstrahlungSimulator, NuclearInteractionSimulator, NuclearInteractionFTFSimulator, BremsstrahlungSimulator, EnergyLossSimulator, PairProductionSimulator, and MultipleScatteringSimulator.

Referenced by updateState().

double MaterialEffectsSimulator::eMass ( ) const

inline

Electron mass in GeV/c2.

Definition at line 48 of file MaterialEffectsSimulator.h.

Referenced by PairProductionSimulator::compute(), and EnergyLossSimulator::compute().

{ return 0.000510998902; }

RHEP_const_iter MaterialEffectsSimulator::endDaughters ( ) const

inline

Returns const iterator to the end of the daughters list.

Definition at line 57 of file MaterialEffectsSimulator.h.

References _theUpdatedState.

Referenced by MaterialEffects::interact().

{ return _theUpdatedState.end(); }

double MaterialEffectsSimulator::excitE ( ) const

inline

Mean excitation energy (in GeV)

Definition at line 46 of file MaterialEffectsSimulator.h.

References theZ().

Referenced by EnergyLossSimulator::compute().

{ return 12.5E-9 * theZ(); }

unsigned MaterialEffectsSimulator::nDaughters ( ) const

inline

Returns the number of daughters.

Definition at line 60 of file MaterialEffectsSimulator.h.

References _theUpdatedState.

Referenced by MaterialEffects::interact().

{ return _theUpdatedState.size(); }

XYZVector MaterialEffectsSimulator::orthogonal

(

const XYZVector &

aVector

)

const

A vector orthogonal to another one (because it's not in XYZTLorentzVector)

Definition at line 30 of file MaterialEffectsSimulator.cc.

References x, y, and z.

Referenced by MultipleScatteringSimulator::compute(), and NuclearInteractionSimulator::compute().

                                                                             {
  double x = fabs(aVector.X());
  double y = fabs(aVector.Y());
  double z = fabs(aVector.Z());

  if (x < y)
    return x < z ? XYZVector(0., aVector.Z(), -aVector.Y()) : XYZVector(aVector.Y(), -aVector.X(), 0.);
  else
    return y < z ? XYZVector(-aVector.Z(), 0., aVector.X()) : XYZVector(aVector.Y(), -aVector.X(), 0.);
}

double MaterialEffectsSimulator::radiationLength ( ) const

inlineprivate

Returns the fraction of radiation lengths traversed.

Definition at line 79 of file MaterialEffectsSimulator.h.

References radLengths.

{ return radLengths; }

double MaterialEffectsSimulator::radLenIncm ( ) const

inline

One radiation length in cm.

Definition at line 44 of file MaterialEffectsSimulator.h.

References radLen.

Referenced by MultipleScatteringSimulator::compute(), and EnergyLossSimulator::compute().

{ return radLen; }

double MaterialEffectsSimulator::rho ( ) const

inline

Density in g/cm3.

Definition at line 42 of file MaterialEffectsSimulator.h.

References density.

Referenced by Lepton.Lepton::absIsoFromEA(), Muon.Muon::absIsoWithFSR(), and EnergyLossSimulator::compute().

{ return density; }

virtual void MaterialEffectsSimulator::save ( )

inlinevirtual

Used by NuclearInteractionSimulator to save last sampled event.

Reimplemented in NuclearInteractionSimulator.

Definition at line 72 of file MaterialEffectsSimulator.h.

Referenced by MaterialEffects::save().

{};

void MaterialEffectsSimulator::setNormalVector ( const GlobalVector &  normal )

inline

Sets the vector normal to the surface traversed.

Definition at line 63 of file MaterialEffectsSimulator.h.

References theNormalVector.

Referenced by MuonSimHitProducer::applyMaterialEffects(), and MaterialEffects::interact().

{ theNormalVector = normal; }

double MaterialEffectsSimulator::theA ( ) const

inline

A.

Functions to return atomic properties of the material Here the tracker material is assumed to be 100% Silicon

Definition at line 38 of file MaterialEffectsSimulator.h.

References A.

Referenced by EnergyLossSimulator::compute(), and NuclearInteractionSimulator::compute().

{ return A; }

double MaterialEffectsSimulator::theZ ( ) const

inline

Z.

Definition at line 40 of file MaterialEffectsSimulator.h.

References Z.

Referenced by EnergyLossSimulator::compute(), excitE(), PairProductionSimulator::gbteth(), BremsstrahlungSimulator::gbteth(), and MuonBremsstrahlungSimulator::gbteth().

{ return Z; }

void MaterialEffectsSimulator::updateState	(	ParticlePropagator &	myTrack,
		double	radlen,
		RandomEngineAndDistribution const *	random
	)

Compute the material effect (calls the sub class)

Definition at line 19 of file MaterialEffectsSimulator.cc.

References _theUpdatedState, compute(), radLengths, and theClosestChargedDaughterId.

Referenced by MuonSimHitProducer::applyMaterialEffects(), MaterialEffects::interact(), and CalorimetryManager::MuonMipSimulation().

                                                                                      {
  _theUpdatedState.clear();
  theClosestChargedDaughterId = -1;

  radLengths = radlen;
  if (radLengths > 0.)
    compute(Particle, random);
}

Member Data Documentation

std::vector<RawParticle> MaterialEffectsSimulator::_theUpdatedState

protected

Definition at line 82 of file MaterialEffectsSimulator.h.

Referenced by beginDaughters(), PairProductionSimulator::compute(), BremsstrahlungSimulator::compute(), NuclearInteractionFTFSimulator::compute(), NuclearInteractionSimulator::compute(), MuonBremsstrahlungSimulator::compute(), endDaughters(), MaterialEffectsSimulator(), nDaughters(), NuclearInteractionFTFSimulator::saveDaughter(), updateState(), and ~MaterialEffectsSimulator().

double MaterialEffectsSimulator::A

protected

Definition at line 87 of file MaterialEffectsSimulator.h.

Referenced by MuonBremsstrahlungSimulator::compute(), and theA().

double MaterialEffectsSimulator::density

protected

Definition at line 89 of file MaterialEffectsSimulator.h.

Referenced by MuonBremsstrahlungSimulator::compute(), and rho().

double MaterialEffectsSimulator::radLen

protected

Definition at line 90 of file MaterialEffectsSimulator.h.

Referenced by MuonBremsstrahlungSimulator::compute(), and radLenIncm().

double MaterialEffectsSimulator::radLengths

protected

Definition at line 84 of file MaterialEffectsSimulator.h.

Referenced by MultipleScatteringSimulator::compute(), PairProductionSimulator::compute(), EnergyLossSimulator::compute(), BremsstrahlungSimulator::compute(), NuclearInteractionFTFSimulator::compute(), NuclearInteractionSimulator::compute(), MuonBremsstrahlungSimulator::compute(), radiationLength(), and updateState().

int MaterialEffectsSimulator::theClosestChargedDaughterId

protected

Definition at line 94 of file MaterialEffectsSimulator.h.

Referenced by closestDaughterId(), NuclearInteractionFTFSimulator::compute(), NuclearInteractionSimulator::compute(), NuclearInteractionFTFSimulator::saveDaughter(), and updateState().

GlobalVector MaterialEffectsSimulator::theNormalVector

protected

Definition at line 92 of file MaterialEffectsSimulator.h.

Referenced by MultipleScatteringSimulator::compute(), and setNormalVector().

double MaterialEffectsSimulator::Z

protected

Definition at line 88 of file MaterialEffectsSimulator.h.

Referenced by MuonBremsstrahlungSimulator::compute(), BeamSpotObj.BeamSpot::Reset(), and theZ().