//
//-- Authors: Evgeny Karpechev (INR) and Alla Maevskaia (INR)
// Latest changes by Christian Holm Christensen <cholm@nbi.dk>
-/*
- Reconstruct nember of particles in given group of pads for given
- FMDvolume determine by numberOfVolume ,
- numberOfMinSector,numberOfMaxSector, numberOfMinRing,
- numberOfMaxRing Reconstruction method choose dependence on number
- of empty pads
- */
/* $Id$ */
+/** @file AliFMDReconstructor.h
+ @author Christian Holm Christensen <cholm@nbi.dk>
+ @date Mon Mar 27 12:47:09 2006
+ @brief FMD reconstruction
+*/
+//____________________________________________________________________
// Header guards in the header files speeds up the compilation
// considerably. Please leave them in.
#ifndef ALIRECONSTRUCTOR_H
# include <AliReconstructor.h>
#endif
-#ifndef ALIFMDMAP_H
-# include <AliFMDMap.h>
-#endif
+
+#include "AliLog.h"
//____________________________________________________________________
+class TTree;
class TClonesArray;
-class AliFMD;
-class AliLoader;
-class AliRunLoader;
class AliFMDDigit;
class AliRawReader;
-typedef AliFMDMap<UShort_t> AliFMDAdcMap;
+class AliESDEvent;
+class AliESDFMD;
+class TH1;
+/** @defgroup FMD_rec Reconstruction */
//____________________________________________________________________
+/** @brief 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.
+
+ @ingroup FMD_rec
+ */
class AliFMDReconstructor: public AliReconstructor
{
-protected:
- mutable AliFMDAdcMap fAdcs;
- mutable AliRunLoader* fRunLoader;
- mutable AliLoader* fFMDLoader;
- mutable TClonesArray* fParticles;
- mutable AliFMD* fFMD;
-
- Float_t fDeltaEta;
- Float_t fDeltaPhi;
- UShort_t fThreshold;
- Float_t fPedestal;
- Float_t fPedestalWidth;
- mutable Int_t fEmptyStrips;
- mutable Int_t fTotalStrips;
-
- enum {
- kMaxDetectors = 3,
- kMaxRings = 2,
- kMaxSectors = 20,
- kMaxStrips = 512
- };
-
public:
+ /** CTOR */
AliFMDReconstructor();
- virtual ~AliFMDReconstructor() {}
+ /** DTOR */
+ virtual ~AliFMDReconstructor();
- void SetDeltaEta(Float_t deta=.1) { fDeltaEta = deta; }
- void SetDeltaPhi(Float_t dphi=360) { fDeltaPhi = dphi; }
- void SetThreshold(UShort_t t=6) { fThreshold = t; }
- void SetPedestal(Float_t mean=10, Float_t width=1);
-
- virtual void Reconstruct(AliRunLoader* runLoader) const;
- virtual void Reconstruct(AliRunLoader* runLoader,
- AliRawReader* rawReader) const;
- virtual void FillESD(AliRunLoader* runLoader, AliESD* esd) const;
-
+ /** 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).
+ */
+ virtual void Init();
+ /** Flag that we can convert raw data into digits.
+ @return always @c true */
+ virtual Bool_t HasDigitConversion() const { return kTRUE; }
+ /** Convert raw data read from the AliRawReader @a reader into
+ digits. This is done using AliFMDRawReader and
+ AliFMDAltroReader. The digits are put in the passed TTree @a
+ digitsTree.
+ @param reader Raw reader.
+ @param digitsTree Tree to store read digits in. */
+ virtual void ConvertDigits(AliRawReader* reader, TTree* digitsTree) const;
+ /** Reconstruct one event from the digits passed in @a digitsTree.
+ The member function creates AliFMDRecPoint objects and stores
+ them on the output tree @a clusterTree. An FMD ESD object is
+ created in parallel.
+ @todo Make sure we get a vertex.
+ @param digitsTree Tree holding the digits of this event
+ @param clusterTree Tree to store AliFMDRecPoint objects in. */
+ virtual void Reconstruct(TTree* digitsTree, TTree* clusterTree) const;
+ virtual void Reconstruct(AliRawReader *, TTree*) const
+ {AliError("Method is not used");}
+ /** Put in the ESD data, the FMD ESD data. The object created by
+ the Reconstruct member function is copied to the ESD object.
+ @param digitsTree Tree of digits for this event - not used
+ @param clusterTree Tree of reconstructed points for this event
+ - not used.
+ @param esd ESD object to store data in.
+ */
+ virtual void FillESD(AliRawReader*, TTree*clusterTree, AliESDEvent*esd) const
+ {FillESD((TTree*)NULL,clusterTree,esd);}
+ virtual void FillESD(TTree* digitsTree, TTree* clusterTree,
+ AliESDEvent* esd) const;
+ /** Not used */
+ virtual void SetESD(AliESDEvent* esd) { fESD = esd; }
+ /** Set the noise factor
+ @param f Factor to use */
+ virtual void SetNoiseFactor(Float_t f=3) { fNoiseFactor = f; }
+ /** Set whether we should do angle correction or nor
+ @param use If true, do angle correction */
+ virtual void SetAngleCorrect(Bool_t use=kTRUE) { fAngleCorrect = use; }
+ /** Set whether we want to do diagnostics. If this is enabled, a
+ file named @c FMD.Diag.root will be made. It contains a set of
+ histograms for each event, filed in separate directories in the
+ file. The histograms are
+ @verbatim
+ diagStep1 Read ADC vs. Noise surpressed ADC
+ diagStep2 Noise surpressed ADC vs. calculated Energy dep.
+ diagStep3 Energy deposition vs. angle corrected Energy dep.
+ diagStep4 Energy deposition vs. calculated multiplicity
+ diagAll Read ADC vs. calculated multiplicity
+ @endverbatim
+ @param use If true, make the diagnostics file */
+ void SetDiagnose(Bool_t use=kTRUE) { fDiagnostics = use; }
protected:
- virtual void ProcessEvent(Int_t event,
- AliRawReader* rawReader,
- TClonesArray* digits) const;
- virtual Bool_t ReadAdcs(TClonesArray* digits) const;
- virtual Bool_t ReadAdcs(AliRawReader* rawReader) const;
- virtual void ProcessDigit(AliFMDDigit* digit) const;
+ /** Copy CTOR
+ @param other Object to copy from. */
+ AliFMDReconstructor(const AliFMDReconstructor& other);
+ /** Assignment operator
+ @param other Object to assign from
+ @return reference to this object */
+ AliFMDReconstructor& operator=(const AliFMDReconstructor& other);
+ /** Try to get the vertex from either ESD or generator header. Sets
+ @c fCurrentVertex to the found Z posistion of the vertex (if
+ found), and sets the flag @c fVertexType accordingly */
+ virtual void GetVertex() const;
+ /** Process AliFMDDigit objects in @a digits. For each digit, find
+ the psuedo-rapidity @f$ \eta@f$, azimuthal angle @f$ \varphi@f$,
+ energy deposited @f$ E@f$, and psuedo-inclusive multiplicity @f$
+ M@f$.
+ @param digits Array of digits. */
+ virtual void ProcessDigits(TClonesArray* digits) const;
+ /** Substract pedestals from raw ADC in @a digit
+ @param digit Digit data
+ @return Pedestal subtracted ADC count. */
virtual UShort_t SubtractPedestal(AliFMDDigit* digit) const;
- virtual void ReconstructFromCache(Float_t zVertex) const;
- ClassDef(AliFMDReconstructor, 0) // class for the FMD reconstruction
+ /** Converts number of ADC counts to energy deposited. This is
+ done by
+ @f[
+ E_i = A_i g_i
+ @f]
+ where @f$ A_i@f$ is the pedestal subtracted ADC counts, and @f$
+ g_i@f$ is the gain for the @f$ i^{\mbox{th}}@f$ strip.
+ @param digit Raw data
+ @param eta Psuedo-rapidity of digit.
+ @param count Pedestal subtracted ADC counts
+ @return Energy deposited @f$ E_i@f$ */
+ virtual Float_t Adc2Energy(AliFMDDigit* digit, Float_t eta,
+ UShort_t count) const;
+ /** Converts an energy signal to number of particles. In this
+ implementation, it's done by
+ @f[
+ M_i = E_i / E_{\mbox{MIP}}
+ @f]
+ where @f$ E_i@f$ is the energy deposited, and @f$
+ E_{\mbox{MIP}}@f$ is the average energy deposited by a minimum
+ ionizing particle
+ @param digit Raw data
+ @param edep Energy deposited @f$ E_i@f$
+ @return Psuedo-inclusive multiplicity @f$ M@f$ */
+ virtual Float_t Energy2Multiplicity(AliFMDDigit* digit, Float_t edep) const;
+ /** Calculate the physical coordinates psuedo-rapidity @f$ \eta@f$,
+ azimuthal angle @f$ \varphi@f$ of the strip corresponding to
+ the digit @a digit. This is done by using the information
+ obtained, and previously cached by AliFMDGeometry, from the
+ TGeoManager.
+ @param digit Digit.
+ @param eta On return, psuedo-rapidity @f$ \eta@f$
+ @param phi On return, azimuthal angle @f$ \varphi@f$ */
+ virtual void PhysicalCoordinates(AliFMDDigit* digit, Float_t& eta,
+ Float_t& phi) const;
+
+ enum Vertex_t {
+ kNoVertex, // Got no vertex
+ kGenVertex, // Got generator vertex
+ kESDVertex // Got ESD vertex
+ };
+ mutable TClonesArray* fMult; // Cache of RecPoints
+ mutable Int_t fNMult; // Number of entries in fMult
+ mutable TTree* fTreeR; // Output tree
+ mutable Float_t fCurrentVertex; // Z-coordinate of primary vertex
+ mutable AliESDFMD* fESDObj; // ESD output object
+ Float_t fNoiseFactor; // Factor of noise to check
+ Bool_t fAngleCorrect; // Whether to angle correct
+ mutable Vertex_t fVertexType; // What kind of vertex we got
+ AliESDEvent* fESD; // ESD object(?)
+ Bool_t fDiagnostics; // Wheter to do diagnostics
+ TH1* fDiagStep1; // Diagnostics histogram
+ TH1* fDiagStep2; // Diagnostics histogram
+ TH1* fDiagStep3; // Diagnostics histogram
+ TH1* fDiagStep4; // Diagnostics histogram
+ TH1* fDiagAll; // Diagnostics histogram
+private:
+
+ ClassDef(AliFMDReconstructor, 3) // class for the FMD reconstruction
};
#endif
//____________________________________________________________________
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff