Splitter class for the MLEM algorithm. More...

#include <AliMUONClusterSplitterMLEM.h>

Inheritance diagram for AliMUONClusterSplitterMLEM:

Public Member Functions
	AliMUONClusterSplitterMLEM (Int_t detElemId, TObjArray *pixArray, Double_t lowestPixelCharge, Double_t lowestPadCharge, Double_t lowestClusterCharge)

virtual	~AliMUONClusterSplitterMLEM ()

void	AddBin (TH2 mlem, Int_t ic, Int_t jc, Int_t mode, Bool_t used, TObjArray *pix)

void	AddCluster (Int_t ic, Int_t nclust, TMatrixD &aijcluclu, Bool_t used, Int_t clustNumb, Int_t &nCoupled)

TObject *	BinToPix (TH2 *mlem, Int_t jc, Int_t ic)

Float_t	ChargeIntegration (Double_t x, Double_t y, const AliMUONPad &pad)

void	Fcn1 (const AliMUONCluster &cluster, Int_t &npar, Double_t gin, Double_t &f, Double_t par, Int_t iflag)

Int_t	Fit (const AliMUONCluster &cluster, Int_t iSimple, Int_t nfit, const Int_t clustFit, TObjArray clusters, Double_t parOk, TObjArray &clusterList, TH2 *mlem)

void	Merge (const AliMUONCluster &cluster, Int_t nForFit, Int_t nCoupled, const Int_t clustNumb, const Int_t clustFit, TObjArray **clusters, TMatrixD &aijcluclu, TMatrixD &aijclupad)

Double_t	MinGroupCoupl (Int_t nCoupled, const Int_t clustNumb, const TMatrixD &aijcluclu, Int_t minGroup)

Int_t	SelectPad (const AliMUONCluster &cluster, Int_t nCoupled, Int_t nForFit, const Int_t clustNumb, const Int_t clustFit, const TMatrixD &aijclupad)

void	Split (const AliMUONCluster &cluster, TH2 mlem, Double_t coef, TObjArray &clusterList)

void	UpdatePads (const AliMUONCluster &cluster, Int_t nfit, Double_t *par)

void	SetDebug (Int_t debug)
	Set debug level. More...

Private Member Functions
	AliMUONClusterSplitterMLEM (const AliMUONClusterSplitterMLEM &)
	will not be implemented More...

AliMUONClusterSplitterMLEM &	operator= (const AliMUONClusterSplitterMLEM &)
	will not be implemented More...

Double_t	Param2Coef (Int_t icand, Double_t coef, Double_t *par) const

Private Attributes
TObjArray *	fPixArray
	! More...

AliMUONMathieson *	fMathieson
	! Mathieson More...

Int_t	fDetElemId
	! detection element we are working on More...

Int_t	fNpar
	! number of fit parameters More...

Double_t	fQtot
	! total charge More...

Int_t	fnCoupled
	! number of coupled pixels ? More...

Int_t	fDebug
	! debug level More...

Double_t	fLowestPixelCharge
	! minimum allowed pixel charge More...

Double_t	fLowestPadCharge
	! minimum allowed pad charge More...

Double_t	fLowestClusterCharge
	! minimum allowed cluster charge More...

Static Private Attributes
static const Double_t	fgkCouplMin = 1.e-2
	threshold on coupling More...

Detailed Description

Splitter class for the MLEM algorithm.

Splitter class for the MLEM algorithm. Performs fitting procedure with up to 3 hit candidates and tries to split clusters if the number of candidates exceeds 3.

Author: Laurent Aphecetche (for the "new" C++ structure) and Alexander Zinchenko, JINR Dubna, for the hardcore of it ;-)

Definition at line 28 of file AliMUONClusterSplitterMLEM.h.

Constructor & Destructor Documentation

AliMUONClusterSplitterMLEM::AliMUONClusterSplitterMLEM	(	Int_t	detElemId,
		TObjArray *	pixArray,
		Double_t	lowestPixelCharge,
		Double_t	lowestPadCharge,
		Double_t	lowestClusterCharge
	)

Constructor

Definition at line 61 of file AliMUONClusterSplitterMLEM.cxx.

AliMUONClusterSplitterMLEM::~AliMUONClusterSplitterMLEM ( )

virtual

Destructor

Definition at line 102 of file AliMUONClusterSplitterMLEM.cxx.

AliMUONClusterSplitterMLEM::AliMUONClusterSplitterMLEM ( const AliMUONClusterSplitterMLEM & )

private

will not be implemented

Member Function Documentation

void AliMUONClusterSplitterMLEM::AddBin	(	TH2 *	mlem,
		Int_t	ic,
		Int_t	jc,
		Int_t	mode,
		Bool_t *	used,
		TObjArray *	pix
	)

Add a bin to the cluster

Definition at line 111 of file AliMUONClusterSplitterMLEM.cxx.

Referenced by Split().

void AliMUONClusterSplitterMLEM::AddCluster	(	Int_t	ic,
		Int_t	nclust,
		TMatrixD &	aijcluclu,
		Bool_t *	used,
		Int_t *	clustNumb,
		Int_t &	nCoupled
	)

Add a cluster to the group of coupled clusters

Definition at line 144 of file AliMUONClusterSplitterMLEM.cxx.

Referenced by Split().

TObject * AliMUONClusterSplitterMLEM::BinToPix	(	TH2 *	mlem,
		Int_t	jc,
		Int_t	ic
	)

Translate histogram bin to pixel

Definition at line 161 of file AliMUONClusterSplitterMLEM.cxx.

Referenced by AddBin(), AliMUONClusterFinderMLEM::FindLocalMaxima(), and Split().

Float_t AliMUONClusterSplitterMLEM::ChargeIntegration	(	Double_t	x,
		Double_t	y,
		const AliMUONPad &	pad
	)

Compute the Mathieson integral on pad area, assuming the center of the Mathieson is at (x,y)

Definition at line 188 of file AliMUONClusterSplitterMLEM.cxx.

Referenced by AliMUONClusterFinderMLEM::ComputeCoefficients(), Fcn1(), and UpdatePads().

void AliMUONClusterSplitterMLEM::Fcn1	(	const AliMUONCluster &	cluster,
		Int_t &	npar,
		Double_t *	gin,
		Double_t &	f,
		Double_t *	par,
		Int_t	iflag
	)

Computes the functional to be minimized

Definition at line 203 of file AliMUONClusterSplitterMLEM.cxx.

Referenced by Fit().

Int_t AliMUONClusterSplitterMLEM::Fit	(	const AliMUONCluster &	cluster,
		Int_t	iSimple,
		Int_t	nfit,
		const Int_t *	clustFit,
		TObjArray **	clusters,
		Double_t *	parOk,
		TObjArray &	clusterList,
		TH2 *	mlem
	)

Steering function and fitting procedure for the fit of pad charge distribution

Definition at line 260 of file AliMUONClusterSplitterMLEM.cxx.

Referenced by AliMUONClusterFinderMLEM::Simple(), and Split().

void AliMUONClusterSplitterMLEM::Merge	(	const AliMUONCluster &	cluster,
		Int_t	nForFit,
		Int_t	nCoupled,
		const Int_t *	clustNumb,
		const Int_t *	clustFit,
		TObjArray **	clusters,
		TMatrixD &	aijcluclu,
		TMatrixD &	aijclupad
	)

Merge the group of clusters with the one having the strongest coupling with them

Definition at line 1059 of file AliMUONClusterSplitterMLEM.cxx.

Referenced by Split().

Double_t AliMUONClusterSplitterMLEM::MinGroupCoupl	(	Int_t	nCoupled,
		const Int_t *	clustNumb,
		const TMatrixD &	aijcluclu,
		Int_t *	minGroup
	)

Find group of clusters with minimum coupling to all the others

Definition at line 1122 of file AliMUONClusterSplitterMLEM.cxx.

Referenced by Split().

AliMUONClusterSplitterMLEM& AliMUONClusterSplitterMLEM::operator= ( const AliMUONClusterSplitterMLEM & )

private

will not be implemented

Double_t AliMUONClusterSplitterMLEM::Param2Coef	(	Int_t	icand,
		Double_t	coef,
		Double_t *	par
	)		const

private

Extract hit contribution scale factor from fit parameters

Definition at line 247 of file AliMUONClusterSplitterMLEM.cxx.

Referenced by Fcn1(), Fit(), and UpdatePads().

Int_t AliMUONClusterSplitterMLEM::SelectPad	(	const AliMUONCluster &	cluster,
		Int_t	nCoupled,
		Int_t	nForFit,
		const Int_t *	clustNumb,
		const Int_t *	clustFit,
		const TMatrixD &	aijclupad
	)

Select pads for fit. If too many coupled clusters, find pads giving the strongest coupling with the rest of clusters and exclude them from the fit.

Definition at line 1206 of file AliMUONClusterSplitterMLEM.cxx.

Referenced by Split().

void AliMUONClusterSplitterMLEM::SetDebug ( Int_t debug )

inline

Set debug level.

Definition at line 80 of file AliMUONClusterSplitterMLEM.h.

Referenced by AliMUONClusterFinderMLEM::Prepare().

void AliMUONClusterSplitterMLEM::Split	(	const AliMUONCluster &	cluster,
		TH2 *	mlem,
		Double_t *	coef,
		TObjArray &	clusterList
	)

The main steering function to work with clusters of pixels in anode plane (find clusters, decouple them from each other, merge them (if necessary), pick up coupled pads, call the fitting function)

Definition at line 784 of file AliMUONClusterSplitterMLEM.cxx.

Referenced by AliMUONClusterFinderMLEM::MainLoop().