Par02Smearer Class Reference

Smearing of the particle momentum or energy. More...

#include <Par02Smearer.hh>

Collaboration diagram for Par02Smearer:

Public Member Functions
G4ThreeVector	SmearMomentum (const G4Track *aTrack, G4double aResolution=-1)
	Smears the momentum with a given resolution. More...
G4double	SmearEnergy (const G4Track *aTrack, G4double aResolution=-1)
	Smears the energy deposit with a given resolution. More...
G4ThreeVector	SmearGaussian (const G4Track *aTrackOriginal, G4double aResolution)
	First possible type of smearing. Smears the momentum with a given resolution. More...
G4double	Gauss (G4double aMean, G4double aStandardDeviation)
	Returns a random number from a Gaussian distribution. More...

Static Public Member Functions
static Par02Smearer *	Instance ()
	Allows the access to the unique Par02Smearer class object. More...

Protected Member Functions
	Par02Smearer ()
	A default constructor. More...
	~Par02Smearer ()

Private Attributes
CLHEP::HepRandomEngine *	fRandomEngine
	CLHEP random engine. More...
CLHEP::RandGauss *	fRandomGauss
	CLHEP random engine used in gaussian smearing. More...

Static Private Attributes
static Par02Smearer *	fPar02Smearer = 0
	A pointer to Par02Smearer object. More...

Detailed Description

Smearing of the particle momentum or energy.

A singleton class used to smear (alter) the particle momentum (for tracking detectors) and energy (for calorimeters). In case the resolution is given, the momentum (energy) is smeared with Gaussian distribution.

Author

Anna Zaborowska

Definition at line 47 of file Par02Smearer.hh.

Constructor & Destructor Documentation

Par02Smearer::Par02Smearer ( )

protected

A default constructor.

Definition at line 47 of file Par02Smearer.cc.

References fRandomEngine, and fRandomGauss.

Referenced by Instance().

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Par02Smearer::~Par02Smearer ( )

protected

Definition at line 55 of file Par02Smearer.cc.

Member Function Documentation

G4double Par02Smearer::Gauss	(	G4double	aMean,
		G4double	aStandardDeviation
	)

Returns a random number from a Gaussian distribution.

Parameters

aMean	The mean of the Gaussian distribution.
aStandardDeviation	The standard deviation of a Gaussian distribution.

Definition at line 103 of file Par02Smearer.cc.

References fRandomGauss.

Referenced by SmearEnergy(), and SmearGaussian().

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Par02Smearer * Par02Smearer::Instance ( void  )

static

Allows the access to the unique Par02Smearer class object.

Returns

A pointer to the Par02Smearer class.

Definition at line 59 of file Par02Smearer.cc.

References fPar02Smearer, and Par02Smearer().

Referenced by Par02FastSimModelEMCal::DoIt(), Par02FastSimModelHCal::DoIt(), and Par02FastSimModelTracker::DoIt().

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G4double Par02Smearer::SmearEnergy	(	const G4Track *	aTrack,
		G4double	aResolution = -1
	)

Smears the energy deposit with a given resolution.

Parameters

aTrack	A track to smear.
aResolution	A resolution. Gaussian smearing is done with a given resolution as a standard deviation.

Definition at line 75 of file Par02Smearer.cc.

References Gauss(), and G4Track::GetKineticEnergy().

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G4ThreeVector Par02Smearer::SmearGaussian	(	const G4Track *	aTrackOriginal,
		G4double	aResolution
	)

First possible type of smearing. Smears the momentum with a given resolution.

Parameters

aTrackOriginal	A track to smear.
aResolution	A resolution taken as a standard deviation of a Gaussian distribution.

Definition at line 92 of file Par02Smearer.cc.

References Gauss(), G4Track::GetMomentum(), and G4Track::GetPosition().

Referenced by SmearMomentum().

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G4ThreeVector Par02Smearer::SmearMomentum	(	const G4Track *	aTrack,
		G4double	aResolution = -1
	)

Smears the momentum with a given resolution.

Parameters

aTrack	A track to smear.
aResolution	A resolution. Gaussian smearing is done with a given resolution as a standard deviation.

Definition at line 68 of file Par02Smearer.cc.

References SmearGaussian().

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Member Data Documentation

Par02Smearer * Par02Smearer::fPar02Smearer = 0

staticprivate

A pointer to Par02Smearer object.

Definition at line 87 of file Par02Smearer.hh.

Referenced by Instance().

CLHEP::HepRandomEngine* Par02Smearer::fRandomEngine

private

CLHEP random engine.

Definition at line 90 of file Par02Smearer.hh.

Referenced by Par02Smearer().

CLHEP::RandGauss* Par02Smearer::fRandomGauss

private

CLHEP random engine used in gaussian smearing.

Definition at line 93 of file Par02Smearer.hh.

Referenced by Gauss(), and Par02Smearer().

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The documentation for this class was generated from the following files:

• geant4.10.02/examples/extended/parameterisations/Par02/include/Par02Smearer.hh
• geant4.10.02/examples/extended/parameterisations/Par02/src/Par02Smearer.cc