AliFMDReconstructor Class Reference
[Reconstruction]

#include <AliFMDReconstructor.h>

Detailed Description

This is a class that reconstructs AliFMDRecPoint objects from of Digits. This class reads either digits from a TClonesArray or raw data from a DDL file (or similar), and applies calibrations to get psuedo-inclusive multiplicities per strip.

Definition at line 40 of file AliFMDReconstructor.h.

Public Member Functions

AliFMDReconstructor ()

virtual ~AliFMDReconstructor ()

virtual void Init (AliRunLoader *runLoader)

virtual Bool_t HasDigitConversion () const

virtual void ConvertDigits (AliRawReader *reader, TTree *digitsTree) const

virtual Bool_t HasLocalReconstruction () const

virtual void Reconstruct (TTree *digitsTree, TTree *clusterTree) const

virtual void FillESD (TTree *digitsTree, TTree *clusterTree, AliESD *esd) const

virtual void SetESD (AliESD *esd)

Protected Member Functions

AliFMDReconstructor (const AliFMDReconstructor &other)

AliFMDReconstructor & operator= (const AliFMDReconstructor &other)

virtual void ProcessDigits (TClonesArray *digits) const

virtual UShort_t SubtractPedestal (AliFMDDigit *digit) const

virtual Float_t Adc2Energy (AliFMDDigit *digit, Float_t eta, UShort_t count) const

virtual Float_t Energy2Multiplicity (AliFMDDigit *digit, Float_t edep) const

virtual void PhysicalCoordinates (AliFMDDigit *digit, Float_t &eta, Float_t &phi) const

Protected Attributes

TClonesArray * fMult

Int_t fNMult

TTree * fTreeR

Float_t fCurrentVertex

AliESDFMD * fESDObj

AliESD * fESD

Private Member Functions

void Reconstruct (AliRawReader *, TTree *) const

void Reconstruct (AliRunLoader *) const

void Reconstruct (AliRunLoader *, AliRawReader *) const

void FillESD (AliRawReader *, TTree *, AliESD *) const

void FillESD (AliRunLoader *, AliESD *) const

void FillESD (AliRunLoader *, AliRawReader *, AliESD *) const

Constructor & Destructor Documentation

AliFMDReconstructor::AliFMDReconstructor ( )

CTOR

virtual AliFMDReconstructor::~AliFMDReconstructor ( ) [virtual]

DTOR

AliFMDReconstructor::AliFMDReconstructor ( const AliFMDReconstructor & other ) [protected]

Copy CTOR
Parameters:

other Object to copy from.

Member Function Documentation

virtual Float_t AliFMDReconstructor::Adc2Energy ( AliFMDDigit * digit,

Float_t eta,

UShort_t count

) const [protected, virtual]

Converts number of ADC counts to energy deposited. This is done by
$E_i = A_i g_i$
where $ A_i$ is the pedestal subtracted ADC counts, and $ g_i$ is the gain for the $i^{\mbox{th}}$ strip.
Parameters:

digit Raw data

eta Psuedo-rapidity of digit.

count Pedestal subtracted ADC counts

Returns:
Energy deposited $ E_i$

virtual void AliFMDReconstructor::ConvertDigits ( AliRawReader * reader,

TTree * digitsTree

) const [virtual]

Convert raw data read from the AliRawReader reader into digits. This is done using AliFMDRawReader and AliFMDAltroReader. The digits are put in the passed TTree digitsTree.
Parameters:

reader Raw reader.

digitsTree Tree to store read digits in.

virtual Float_t AliFMDReconstructor::Energy2Multiplicity ( AliFMDDigit * digit,

Float_t edep

) const [protected, virtual]

Converts an energy signal to number of particles. In this implementation, it's done by
$M_i = E_i / E_{\mbox{MIP}}$
where $ E_i$ is the energy deposited, and $E_{\mbox{MIP}}$ is the average energy deposited by a minimum ionizing particle
Parameters:

digit Raw data

edep Energy deposited $ E_i$

Returns:
Psuedo-inclusive multiplicity $ M$

void AliFMDReconstructor::FillESD ( AliRunLoader * ,

AliRawReader * ,

AliESD *

) const [private]

Hide base classes unused function

void AliFMDReconstructor::FillESD ( AliRunLoader * ,

AliESD *

) const [private]

Hide base classes unused function

void AliFMDReconstructor::FillESD ( AliRawReader * ,

TTree * ,

AliESD *

) const [private]

Hide base classes unused function

virtual void AliFMDReconstructor::FillESD ( TTree * digitsTree,

TTree * clusterTree,

AliESD * esd

) const [virtual]

Put in the ESD data, the FMD ESD data. The object created by the Reconstruct member function is copied to the ESD object.
Parameters:

digitsTree Tree of digits for this event - not used

clusterTree Tree of reconstructed points for this event

not used.

esd ESD object to store data in.

virtual Bool_t AliFMDReconstructor::HasDigitConversion ( ) const [inline, virtual]

Flag that we can convert raw data into digits.
Returns:
always true

Definition at line 59 of file AliFMDReconstructor.h.

virtual Bool_t AliFMDReconstructor::HasLocalReconstruction ( ) const [inline, virtual]

Flag that we can do one-event reconstruction.
Returns:
always true

Definition at line 69 of file AliFMDReconstructor.h.

virtual void AliFMDReconstructor::Init ( AliRunLoader * runLoader ) [virtual]

Initialize the reconstructor. Here, we initialize the geometry manager, and finds the local to global transformations from the geometry. The calibration parameter manager is also initialized (meaning that the calibration parameters is read from CDB). Next, we try to get some information about the run from the run loader passed.
Parameters:

runLoader Run loader to use to load and store data.

AliFMDReconstructor& AliFMDReconstructor::operator= ( const AliFMDReconstructor & other ) [protected]

Assignment operator
Parameters:

other Object to assign from

Returns:
reference to this object

virtual void AliFMDReconstructor::PhysicalCoordinates ( AliFMDDigit * digit,

Float_t & eta,

Float_t & phi

) const [protected, virtual]

Calculate the physical coordinates psuedo-rapidity $\eta$ , azimuthal angle $\varphi$ of the strip corresponding to the digit digit. This is done by using the information obtained, and previously cached by AliFMDGeometry, from the TGeoManager.
Parameters:

digit Digit.

eta On return, psuedo-rapidity $\eta$

phi On return, azimuthal angle $\varphi$

virtual void AliFMDReconstructor::ProcessDigits ( TClonesArray * digits ) const [protected, virtual]

Process AliFMDDigit objects in digits. For each digit, find the psuedo-rapidity $\eta$ , azimuthal angle $\varphi$ , energy deposited $ E$ , and psuedo-inclusive multiplicity $ M$ .
Parameters:

digits Array of digits.

void AliFMDReconstructor::Reconstruct ( AliRunLoader * ,

AliRawReader *

) const [private]

Hide base classes unused function

void AliFMDReconstructor::Reconstruct ( AliRunLoader * ) const [private]

Hide base classes unused function

void AliFMDReconstructor::Reconstruct ( AliRawReader * ,

TTree *

) const [private]

Hide base classes unused function

virtual void AliFMDReconstructor::Reconstruct ( TTree * digitsTree,

TTree * clusterTree

) const [virtual]

Reconstruct one event from the digits passed in digitsTree. The member function creates AliFMDRecPoint objects and stores them on the output tree clusterTree. An FMD ESD object is created in parallel.
Todo:
Make sure we get a vertex.

Parameters:

digitsTree Tree holding the digits of this event

clusterTree Tree to store AliFMDRecPoint objects in.

virtual void AliFMDReconstructor::SetESD ( AliESD * esd ) [inline, virtual]

Not used
Definition at line 88 of file AliFMDReconstructor.h.

virtual UShort_t AliFMDReconstructor::SubtractPedestal ( AliFMDDigit * digit ) const [protected, virtual]

Substract pedestals from raw ADC in digit
Parameters:

digit Digit data

Returns:
Pedestal subtracted ADC count.

Member Data Documentation

Float_t AliFMDReconstructor::fCurrentVertex [mutable, protected]

Definition at line 161 of file AliFMDReconstructor.h.

AliESD* AliFMDReconstructor::fESD [protected]

Definition at line 163 of file AliFMDReconstructor.h.

AliESDFMD* AliFMDReconstructor::fESDObj [mutable, protected]

Definition at line 162 of file AliFMDReconstructor.h.

TClonesArray* AliFMDReconstructor::fMult [mutable, protected]

Definition at line 158 of file AliFMDReconstructor.h.

Int_t AliFMDReconstructor::fNMult [mutable, protected]

Definition at line 159 of file AliFMDReconstructor.h.

TTree* AliFMDReconstructor::fTreeR [mutable, protected]

Definition at line 160 of file AliFMDReconstructor.h.

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

AliFMDReconstructor.h

Generated on Fri Mar 24 17:11:22 2006 for ALICE FMD Off-line by

1.4.6


Public Member Functions
	AliFMDReconstructor ()
virtual	~AliFMDReconstructor ()
virtual void	Init (AliRunLoader *runLoader)
virtual Bool_t	HasDigitConversion () const
virtual void	ConvertDigits (AliRawReader reader, TTree digitsTree) const
virtual Bool_t	HasLocalReconstruction () const
virtual void	Reconstruct (TTree digitsTree, TTree clusterTree) const
virtual void	FillESD (TTree digitsTree, TTree clusterTree, AliESD *esd) const
virtual void	SetESD (AliESD *esd)
Protected Member Functions
	AliFMDReconstructor (const AliFMDReconstructor &other)
AliFMDReconstructor &	operator= (const AliFMDReconstructor &other)
virtual void	ProcessDigits (TClonesArray *digits) const
virtual UShort_t	SubtractPedestal (AliFMDDigit *digit) const
virtual Float_t	Adc2Energy (AliFMDDigit *digit, Float_t eta, UShort_t count) const
virtual Float_t	Energy2Multiplicity (AliFMDDigit *digit, Float_t edep) const
virtual void	PhysicalCoordinates (AliFMDDigit *digit, Float_t &eta, Float_t &phi) const
Protected Attributes
TClonesArray *	fMult
Int_t	fNMult
TTree *	fTreeR
Float_t	fCurrentVertex
AliESDFMD *	fESDObj
AliESD *	fESD
Private Member Functions
void	Reconstruct (AliRawReader , TTree ) const
void	Reconstruct (AliRunLoader *) const
void	Reconstruct (AliRunLoader , AliRawReader ) const
void	FillESD (AliRawReader , TTree , AliESD *) const
void	FillESD (AliRunLoader , AliESD ) const
void	FillESD (AliRunLoader , AliRawReader , AliESD *) const

AliFMDReconstructor Class Reference [Reconstruction]

Detailed Description

Public Member Functions

Protected Member Functions

Protected Attributes

Private Member Functions

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation

AliFMDReconstructor Class Reference
[Reconstruction]