#include <AliSPDMCTrackDensity.h>

Inheritance diagram for AliSPDMCTrackDensity:

Public Member Functions
	AliSPDMCTrackDensity ()

	AliSPDMCTrackDensity (const char *name)

	AliSPDMCTrackDensity (const AliSPDMCTrackDensity &o)

AliSPDMCTrackDensity &	operator= (const AliSPDMCTrackDensity &o)

virtual	~AliSPDMCTrackDensity ()

Bool_t	Calculate (const AliMCEvent &event, const TVector3 &ip, TH2D &output, TH2D *primary)

void	Print (Option_t *option="") const

Public Member Functions inherited from AliBaseMCTrackDensity
	AliBaseMCTrackDensity ()

	AliBaseMCTrackDensity (const char *name)

	AliBaseMCTrackDensity (const AliBaseMCTrackDensity &o)

AliBaseMCTrackDensity &	operator= (const AliBaseMCTrackDensity &o)

virtual	~AliBaseMCTrackDensity ()

void	SetUseOnlyPrimary (Bool_t use)

void	SetUseFlowWeights (Bool_t use)

void	SetTrackGammaToPi0 (Bool_t use)

void	SetDebug (Bool_t debug=true)

virtual void	CreateOutputObjects (TList *list)

void	SetWeights (AliBaseMCWeights *weights)

void	SetTruthWeights (AliBaseMCWeights *weights)

Protected Member Functions
Int_t	GetDetectorId () const

AliTrackReference *	ProcessRef (AliMCParticle particle, const AliMCParticle mother, AliTrackReference *ref)

void	BeginTrackRefs ()

Bool_t	CheckTrackRef (AliTrackReference *) const

Double_t	StoreParticle (AliMCParticle particle, const AliMCParticle mother, AliTrackReference *ref) const

Protected Member Functions inherited from AliBaseMCTrackDensity
Bool_t	ProcessTracks (const AliMCEvent &event, const TVector3 &ip, TH2D *primary)

Bool_t	ProcessTrack (AliMCParticle particle, const AliMCParticle mother)

virtual void	EndTrackRefs (Int_t)

Bool_t	GetCollisionParameters (const AliMCEvent &event)

Double_t	GetTrackRefTheta (const AliTrackReference *ref) const

const AliMCParticle *	GetMother (Int_t iTr, const AliMCEvent &event) const

Double_t	CalculateWeight (const AliMCParticle *p, Bool_t isPrimary) const

Double_t	CalculateTruthWeight (const AliMCParticle *p) const

Protected Attributes
Double_t	fMinR

Double_t	fMaxR

Double_t	fMinZ

Double_t	fMaxZ

AliTrackReference *	fStored

TH2D *	fOutput
	Last stored. More...

Protected Attributes inherited from AliBaseMCTrackDensity
Bool_t	fUseOnlyPrimary

TH2D *	fBinFlow

TH2D *	fEtaBinFlow

TH2D *	fPhiBinFlow

TH1D *	fNRefs

AliBaseMCWeights *	fWeights

AliBaseMCWeights *	fTruthWeights

TVector3	fIP

Double_t	fB

Double_t	fPhiR

Bool_t	fDebug

Bool_t	fTrackGammaToPi0

Detailed Description

A class to calculate the particle density from track references. This code is used both in AliForwardMCCorrectionsTask and AliSPDMCDensity calculator.

Input:

AliMultiplicity object - from reconstruction
Kinematics
Track-References

Output:

AliESDSPD object - content is # of track references/strip

Corrections used:

None

Histograms:

Incident angle vs number of track references
Incident angle vs number of strips/cluster

Definition at line 29 of file AliSPDMCTrackDensity.h.

Constructor & Destructor Documentation

AliSPDMCTrackDensity::AliSPDMCTrackDensity ( )

Default constructor. Do not use - for ROOT I/O system use only

Definition at line 12 of file AliSPDMCTrackDensity.cxx.

AliSPDMCTrackDensity::AliSPDMCTrackDensity ( const char * name )

Normal constructor

Parameters

name Not used

Definition at line 25 of file AliSPDMCTrackDensity.cxx.

AliSPDMCTrackDensity::AliSPDMCTrackDensity ( const AliSPDMCTrackDensity & o )

Copy constructor

Parameters

o	Object to copy from

Definition at line 38 of file AliSPDMCTrackDensity.cxx.

virtual AliSPDMCTrackDensity::~AliSPDMCTrackDensity ( )

inlinevirtual

Destructor.

Definition at line 59 of file AliSPDMCTrackDensity.h.

Member Function Documentation

void AliSPDMCTrackDensity::BeginTrackRefs ( )

protectedvirtual

Called at before loop over track references

Reimplemented from AliBaseMCTrackDensity.

Definition at line 77 of file AliSPDMCTrackDensity.cxx.

Referenced by ~AliSPDMCTrackDensity().

Bool_t AliSPDMCTrackDensity::Calculate	(	const AliMCEvent &	event,
		const TVector3 &	ip,
		TH2D &	output,
		TH2D *	primary
	)

Loops over all the particles in the passed event. If primary is not null, then that histogram is filled with the primary particle information - irrespective of whether the particle actually hits the SPD or not. For each track (primary or secondary, unless only primary information is requested - see SetUseOnlyPrimary) loop over all track references to that particle and check if they come from the SPD. In that case, figure out which \((\eta,\varphi)\)-bin to assign the track to, and fill the output histogram

Parameters