AliFMDSharingFilter Class Reference

#include <AliFMDSharingFilter.h>

Inheritance diagram for AliFMDSharingFilter:

Classes
struct	RingHistos

Public Types
enum	Status { kNone = 1, kCandidate = 2, kMergedWithOther = 3, kMergedInto = 4 }

Public Member Functions
virtual	~AliFMDSharingFilter ()
	AliFMDSharingFilter ()
	AliFMDSharingFilter (const char *title)
virtual void	Print (Option_t *option="") const
Parameters etc.
virtual void	SetMergingDisabled (Bool_t disable)
virtual void	SetDebug (Int_t dbg=1)
void	SetUseAngleCorrectedSignals (Bool_t use)
void	SetZeroSharedHitsBelowThreshold (Bool_t use)
void	SetUseSimpleSharing (Bool_t use)
void	SetAllow3Strips (Bool_t use)
void	SetIgnoreESDWhenAngleCorrecting (Bool_t use)
Processing
void	SetupForData (const TAxis &axis)
Bool_t	Filter (const AliESDFMD &input, Bool_t lowFlux, AliESDFMD &output, Double_t zvtx)
virtual void	Terminate (const TList *dir, TList *output, Int_t nEvents)
virtual void	CreateOutputObjects (TList *dir)
Cuts
AliFMDMultCuts &	GetLCuts ()
AliFMDMultCuts &	GetHCuts ()
const AliFMDMultCuts &	GetLCuts () const
const AliFMDMultCuts &	GetHCuts () const
void	SetLCuts (const AliFMDMultCuts &c)
void	SetHCuts (const AliFMDMultCuts &c)

Protected Member Functions
	AliFMDSharingFilter (const AliFMDSharingFilter &o)
AliFMDSharingFilter &	operator= (const AliFMDSharingFilter &)
RingHistos *	GetRingHistos (UShort_t d, Char_t r) const
Double_t	SignalInStrip (const AliESDFMD &fmd, UShort_t d, Char_t r, UShort_t s, UShort_t t) const
Double_t	AngleCorrect (Double_t mult, Double_t eta) const
Double_t	DeAngleCorrect (Double_t mult, Double_t eta) const
virtual Double_t	GetHighCut (UShort_t d, Char_t r, Double_t eta, Bool_t errors=true) const
virtual Double_t	GetLowCut (UShort_t d, Char_t r, Double_t eta) const
	ClassDef (AliFMDSharingFilter, 11)

Protected Attributes
TList	fRingHistos
Bool_t	fCorrectAngles
TH2 *	fHighCuts
TH2 *	fLowCuts
Int_t	fDebug
Bool_t	fZeroSharedHitsBelowThreshold
AliFMDMultCuts	fLCuts
AliFMDMultCuts	fHCuts
Bool_t	fUseSimpleMerging
Bool_t	fThreeStripSharing
Bool_t	fMergingDisabled
Bool_t	fIgnoreESDForAngleCorrection

Detailed Description

Class to do the sharing correction. That is, a filter that merges adjacent strip signals presumably originating from a single particle that impinges on the detector in such a way that it deposite energy into two or more strips.

Energy loss sharing

Input:

• AliESDFMD object - from reconstruction

Output:

• AliESDFMD object - copy of input, but with signals merged

Corrections used:

• AliFMDCorrELossFit

Histograms:

• For each ring (FMD1i, FMD2i, FMD2o, FMD3i, FMD3o) the distribution of signals before and after the filter.
• For each ring (see above), an array of distributions of number of hit strips for each vertex bin (if enabled - see SetupForData method)

Definition at line 56 of file AliFMDSharingFilter.h.

Member Enumeration Documentation

enum AliFMDSharingFilter::Status

Status of a strip

Deprecated:

Not used

Enumerator
kNone	Nothing yet
kCandidate	Candidate for merging
kMergedWithOther	This was merged into other strip
kMergedInto	Other strips was merged into this

Definition at line 63 of file AliFMDSharingFilter.h.

Constructor & Destructor Documentation

AliFMDSharingFilter::~AliFMDSharingFilter ( )

virtual

Destructor

Definition at line 111 of file AliFMDSharingFilter.cxx.

AliFMDSharingFilter::AliFMDSharingFilter

(

)

Default Constructor - do not use

AliFMDSharingFilter::AliFMDSharingFilter

(

const char *

title

)

Constructor

Parameters

title

Title of object - not significant

Definition at line 77 of file AliFMDSharingFilter.cxx.

AliFMDSharingFilter::AliFMDSharingFilter ( const AliFMDSharingFilter &  o )

inlineprotected

Copy constructor - not implemented

Definition at line 236 of file AliFMDSharingFilter.h.

Member Function Documentation

Double_t AliFMDSharingFilter::AngleCorrect ( Double_t  mult, Double_t  eta  ) const

protected

Angle correct the signal

Parameters

mult	Angle Un-corrected Signal
eta	Pseudo-rapidity

Returns

Angle corrected signal

Definition at line 520 of file AliFMDSharingFilter.cxx.

Referenced by Filter(), and SignalInStrip().

AliFMDSharingFilter::ClassDef ( AliFMDSharingFilter  , 11    )

protected

void AliFMDSharingFilter::CreateOutputObjects ( TList *  dir )

virtual

Define the output histograms. These are put in a sub list of the passed list. The histograms are merged before the parent task calls AliAnalysisTaskSE::Terminate

Parameters

dir	Directory to add to

Reimplemented in AliFMDMCSharingFilter.

Definition at line 637 of file AliFMDSharingFilter.cxx.

Referenced by AliForwardQATask::Book(), AliForwardMultiplicityBase::Book(), and AliFMDMCSharingFilter::CreateOutputObjects().

Double_t AliFMDSharingFilter::DeAngleCorrect ( Double_t  mult, Double_t  eta  ) const

protected

Angle de-correct the signal

Parameters

mult	Angle corrected Signal
eta	Pseudo-rapidity

Returns

Angle un-corrected signal

Definition at line 538 of file AliFMDSharingFilter.cxx.

Referenced by SignalInStrip().

Bool_t AliFMDSharingFilter::Filter	(	const AliESDFMD &	input,
		Bool_t	lowFlux,
		AliESDFMD &	output,
		Double_t	zvtx
	)

Filter the input AliESDFMD object

Parameters

input	Input
lowFlux	If this is a low-flux event
output	Output AliESDFMD object
zvtx	Vertex position

Returns

True on success, false otherwise

Definition at line 192 of file AliFMDSharingFilter.cxx.

Referenced by AliForwardMultiplicityTask::Event(), AliForwardMCMultiplicityTask::Event(), and AliForwardQATask::Event().

AliFMDMultCuts& AliFMDSharingFilter::GetHCuts ( )

inline

Get the high cuts

Returns

Reference to high cuts

Definition at line 206 of file AliFMDSharingFilter.h.

Referenced by AliForwardQATask::PreData().

const AliFMDMultCuts& AliFMDSharingFilter::GetHCuts ( ) const

inline

Get the high cuts

Returns

Reference to high cuts

Definition at line 218 of file AliFMDSharingFilter.h.

Double_t AliFMDSharingFilter::GetHighCut ( UShort_t  d, Char_t  r, Double_t  eta, Bool_t  errors = true  ) const

protectedvirtual

Get the high cut. The high cut is defined as the most-probably-value peak found from the energy distributions, minus 2 times the width of the corresponding Landau.

Parameters

d	Detector
r	Ring
eta	Eta value
errors	If false, do not show errors

Returns

0 or less on failure, otherwise \(\Delta_{mp}-n\xi\)

Definition at line 506 of file AliFMDSharingFilter.cxx.

Referenced by Filter().

AliFMDMultCuts& AliFMDSharingFilter::GetLCuts ( )

inline

Get the low cuts

Returns

Reference to low cuts

Definition at line 200 of file AliFMDSharingFilter.h.

Referenced by AliForwardQATask::PreData().

const AliFMDMultCuts& AliFMDSharingFilter::GetLCuts ( ) const

inline

Get the low cuts

Returns

Reference to low cuts

Definition at line 212 of file AliFMDSharingFilter.h.

Double_t AliFMDSharingFilter::GetLowCut ( UShort_t  d, Char_t  r, Double_t  eta  ) const

protectedvirtual

Get the low cut. Normally, the low cut is taken to be the lower value of the fit range used when generating the energy loss fits. However, if fLowCut is set (using SetLowCit) to a value greater than 0, then that value is used.

Parameters

d	Detector
r	Ring
eta	Eta value

Returns

Definition at line 492 of file AliFMDSharingFilter.cxx.

Referenced by Filter().

AliFMDSharingFilter::RingHistos * AliFMDSharingFilter::GetRingHistos ( UShort_t  d, Char_t  r  ) const

protected

Get the ring histogram container

Parameters

d	Detector
r	Ring

Returns

Ring histogram container

Definition at line 122 of file AliFMDSharingFilter.cxx.

Referenced by Filter().

AliFMDSharingFilter& AliFMDSharingFilter::operator= ( const AliFMDSharingFilter &  )

inlineprotected

Assignment operator - not implemented

Returns

Reference to this

Definition at line 242 of file AliFMDSharingFilter.h.

Referenced by AliFMDMCSharingFilter::operator=().

void AliFMDSharingFilter::Print ( Option_t *  option = "" ) const

virtual

Print information

Parameters

option

Not used

Reimplemented in AliFMDMCSharingFilter.

Definition at line 720 of file AliFMDSharingFilter.cxx.

Referenced by AliForwardMultiplicityBase::Print(), AliFMDMCSharingFilter::Print(), and AliForwardQATask::Print().

void AliFMDSharingFilter::SetAllow3Strips ( Bool_t  use )

inline

In case of a simpler merging algorithm allow 3 strips to be merged

Parameters

use	allow three strips

Definition at line 133 of file AliFMDSharingFilter.h.

Referenced by AddTaskForwardQA(), ForwardAODConfig(), and TunedConfig().

virtual void AliFMDSharingFilter::SetDebug ( Int_t  dbg = 1 )

inlinevirtual

Set the debug level. The higher the value the more output

Parameters

dbg	Debug level

Reimplemented in AliFMDMCSharingFilter.

Definition at line 103 of file AliFMDSharingFilter.h.

Referenced by AliFMDMCSharingFilter::SetDebug(), AliForwardQATask::SetDebug(), and AliForwardMultiplicityBase::SetDebug().

void AliFMDSharingFilter::SetHCuts ( const AliFMDMultCuts &  c )

inline

Set the high cuts

Parameters

c	Cuts object

Definition at line 230 of file AliFMDSharingFilter.h.

Referenced by AddTaskForwardQA(), ForwardAODConfig(), and TunedConfig().

void AliFMDSharingFilter::SetIgnoreESDWhenAngleCorrecting ( Bool_t  use )

inline

Set whether to ignore the ESD info when angle correcting, this is to counter a known issue where the info in the ESD is incorrect

Parameters

use	ignore the ESD info

Definition at line 140 of file AliFMDSharingFilter.h.

Referenced by ForwardAODConfig(), and TunedConfig().

void AliFMDSharingFilter::SetLCuts ( const AliFMDMultCuts &  c )

inline

Set the low cuts

Parameters

c	Cuts object

Definition at line 224 of file AliFMDSharingFilter.h.

Referenced by AddTaskForwardQA(), ForwardAODConfig(), and TunedConfig().

virtual void AliFMDSharingFilter::SetMergingDisabled ( Bool_t  disable )

inlinevirtual

If called with a true argument, then merging is wholy disabled

Parameters

disable

If true, disable merging altogether

Definition at line 97 of file AliFMDSharingFilter.h.

void AliFMDSharingFilter::SetupForData

(

const TAxis &

axis

)

Initialize

Parameters

axis	Default eta axis from parent task

Definition at line 147 of file AliFMDSharingFilter.cxx.

Referenced by AliForwardQATask::PreData(), and AliForwardMultiplicityBase::PreData().

void AliFMDSharingFilter::SetUseAngleCorrectedSignals ( Bool_t  use )

inline

Enable use of angle corrected signals in the algorithm

Parameters

use	If true, use angle corrected signals, otherwise use de-corrected signals. In the final output, the signals are always angle corrected.

Definition at line 111 of file AliFMDSharingFilter.h.

Referenced by AddTaskForwardQA(), ForwardAODConfig(), and TunedConfig().

void AliFMDSharingFilter::SetUseSimpleSharing ( Bool_t  use )

inline

Enable a simpler merging algorithm

Parameters

use	use the simpler algorithm

Definition at line 125 of file AliFMDSharingFilter.h.

Referenced by AddTaskForwardQA(), ForwardAODConfig(), and TunedConfig().

void AliFMDSharingFilter::SetZeroSharedHitsBelowThreshold ( Bool_t  use )

inline

Enable zeroing of signals if below high cut

Parameters

use	zero the signals if below sharing cut

Definition at line 118 of file AliFMDSharingFilter.h.

Referenced by AddTaskForwardQA(), ForwardAODConfig(), and TunedConfig().

Double_t AliFMDSharingFilter::SignalInStrip ( const AliESDFMD &  fmd, UShort_t  d, Char_t  r, UShort_t  s, UShort_t  t  ) const

protected

Get the signal in a strip

Parameters

fmd	ESD object
d	Detector
r	Ring
s	Sector
t	Strip

Returns

The energy signal

Definition at line 435 of file AliFMDSharingFilter.cxx.

Referenced by Filter().

void AliFMDSharingFilter::Terminate ( const TList *  dir, TList *  output, Int_t  nEvents  )

virtual

Scale the histograms to the total number of events

Parameters

dir	Where the output is
output	Output list
nEvents	Number of events

Reimplemented in AliFMDMCSharingFilter.

Definition at line 557 of file AliFMDSharingFilter.cxx.

Referenced by AliForwardQATask::Finalize(), AliForwardMultiplicityBase::Finalize(), and AliFMDMCSharingFilter::Terminate().

Member Data Documentation

Bool_t AliFMDSharingFilter::fCorrectAngles

protected

Definition at line 390 of file AliFMDSharingFilter.h.

Referenced by CreateOutputObjects(), Filter(), Print(), SetUseAngleCorrectedSignals(), and SignalInStrip().

Int_t AliFMDSharingFilter::fDebug

protected

Definition at line 393 of file AliFMDSharingFilter.h.

Referenced by AliFMDSharingFilter(), CreateOutputObjects(), Filter(), SetDebug(), SetupForData(), Terminate(), and ~AliFMDSharingFilter().

AliFMDMultCuts AliFMDSharingFilter::fHCuts

protected

Definition at line 396 of file AliFMDSharingFilter.h.

Referenced by AliFMDSharingFilter(), CreateOutputObjects(), GetHCuts(), Print(), SetHCuts(), and SetupForData().

TH2* AliFMDSharingFilter::fHighCuts

protected

Definition at line 391 of file AliFMDSharingFilter.h.

Referenced by CreateOutputObjects(), GetHighCut(), and SetupForData().

Bool_t AliFMDSharingFilter::fIgnoreESDForAngleCorrection

protected

Definition at line 400 of file AliFMDSharingFilter.h.

Referenced by SetIgnoreESDWhenAngleCorrecting(), and SignalInStrip().

AliFMDMultCuts AliFMDSharingFilter::fLCuts

protected

Definition at line 395 of file AliFMDSharingFilter.h.

Referenced by AliFMDSharingFilter(), CreateOutputObjects(), GetLCuts(), Print(), SetLCuts(), and SetupForData().

TH2* AliFMDSharingFilter::fLowCuts

protected

Definition at line 392 of file AliFMDSharingFilter.h.

Referenced by CreateOutputObjects(), GetLowCut(), and SetupForData().

Bool_t AliFMDSharingFilter::fMergingDisabled

protected

Definition at line 399 of file AliFMDSharingFilter.h.

Referenced by CreateOutputObjects(), Filter(), and SetMergingDisabled().

TList AliFMDSharingFilter::fRingHistos

protected

Definition at line 389 of file AliFMDSharingFilter.h.

Referenced by AliFMDSharingFilter(), CreateOutputObjects(), Filter(), GetRingHistos(), and Terminate().

Bool_t AliFMDSharingFilter::fThreeStripSharing

protected

Definition at line 398 of file AliFMDSharingFilter.h.

Referenced by CreateOutputObjects(), Filter(), Print(), and SetAllow3Strips().

Bool_t AliFMDSharingFilter::fUseSimpleMerging

protected

Definition at line 397 of file AliFMDSharingFilter.h.

Referenced by CreateOutputObjects(), Print(), and SetUseSimpleSharing().

Bool_t AliFMDSharingFilter::fZeroSharedHitsBelowThreshold

protected

Definition at line 394 of file AliFMDSharingFilter.h.

Referenced by CreateOutputObjects(), Print(), and SetZeroSharedHitsBelowThreshold().

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

• PWGLF/FORWARD/analysis2/AliFMDSharingFilter.h
• PWGLF/FORWARD/analysis2/AliFMDSharingFilter.cxx