#ifndef ALITRDCALPIDLQ_H
#define ALITRDCALPIDLQ_H
+
/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
* See cxx source for full Copyright notice */
/* $Id$ */
-///////////////////////////////////////////////////////////////////////////////
-// //
-// Container for the distributions of dE/dx and the time bin of the //
-// max. cluster for electrons and pions //
-// //
-// Author: //
-// Prashant Shukla <shukla@pi0.physi.uni-heidelberg.de> //
-// //
-///////////////////////////////////////////////////////////////////////////////
-
-#ifndef ROOT_TNamed
-#include <TNamed.h>
+////////////////////////////////////////////////////////////////////////////
+// //
+// PID distributions for the LQ method //
+// //
+// Author: //
+// Alex Bercuci <A.Bercuci@gsi.de> //
+// //
+////////////////////////////////////////////////////////////////////////////
+
+#ifndef ALITRDCALPID_H
+#include "AliTRDCalPID.h"
+#endif
+#ifndef ROOT_TMath
+#include "TMath.h"
#endif
-class TH1;
-class TObjArray;
-class AliTRDCalPIDLQRef;
-
-class AliTRDCalPIDLQ : public TNamed {
-
- friend class AliTRDCalPIDLQRef;
-
- public:
-
+class AliTRDCalPIDLQ : public AliTRDCalPID
+{
+public:
+ enum ETRDCalPIDLQ {
+ kNLength = 4 // No of bins for tracklet length discretization
+ ,kNN2LQtransition = 4 // index of NN slices where first LQ slice ends
+ };
+
AliTRDCalPIDLQ();
AliTRDCalPIDLQ(const Text_t *name, const Text_t *title);
- AliTRDCalPIDLQ(const AliTRDCalPIDLQ& pd);
- virtual ~AliTRDCalPIDLQ();
- AliTRDCalPIDLQ &operator=(const AliTRDCalPIDLQ &c);
-
- virtual void Copy(TObject &c) const;
-
- Bool_t ReadReferences(Char_t *responseFile);
- void SetMeanChargeRatio(Double_t ratio) { fMeanChargeRatio = ratio; }
-
- Double_t GetMeanChargeRatio() const { return fMeanChargeRatio; }
- Double_t GetMomentum(Int_t ip) const { return (ip<0 || ip>=fNMom) ? -1. : fTrackMomentum[ip]; }
- Double_t GetLength(Int_t il) const { return (il<0 || il>=fNLength) ? -1. : fTrackSegLength[il]; }
- //Double_t GetMean(Int_t iType, Int_t ip) const;
- //Double_t GetNormalization(Int_t iType, Int_t ip) const;
+ virtual ~AliTRDCalPIDLQ(){};
- TH1* GetHistogram(Int_t iType, Int_t ip/*, Int_t il*/) const;
- TH1* GetHistogramT(Int_t iType, Int_t ip) const;
+ inline static Bool_t CookdEdx(const Float_t * const dedx, Double_t *x);
+ TObject* GetModel(Int_t ip, Int_t iType, Int_t iPlane) const;
+ static Double_t GetLength(Int_t il) { return (il<0 || il>=kNLength) ? -1. : fgTrackSegLength[il]; }
+ inline static Int_t GetModelID(Int_t mom, Int_t spec, Int_t ii=-1);
+ Double_t GetProbability(Int_t spec, Float_t mom
+ , const Float_t * const dedx
+ , Float_t length, Int_t plane) const;
+ Bool_t LoadReferences(Char_t* refFile);
- Double_t GetProbability(Int_t spec, Float_t mom, Float_t *dedx, Float_t length) const;
- Double_t GetProbabilityT(Int_t spec, Double_t mom, Int_t timbin) const;
- //Int_t GetNbins() const { return fNbins; }
- //Double_t GetBinSize() const { return fBinSize; }
- Bool_t WriteReferences(Char_t *File="TRDPIDHistograms.root", Char_t *dir =".");
+protected:
+ static Float_t fgTrackSegLength[kNLength]; // Track segment lengths
- protected:
-
- void Init();
- void CleanUp();
-
- inline Int_t GetHistID(Int_t part, Int_t mom/*, Int_t length=0*/) const { return part*fNMom + mom; }
- void SaveMaxTimeBin(const Int_t mom, const char *fn);
-
- protected:
-
- static Char_t *fpartName[5]; //! Names of particle species
- static Char_t *fpartSymb[5]; //! Symbols of particle species
- Int_t fNMom; // Number of momenta
- Int_t fNLength; // Number of track segment length intervals
-
- Double_t *fTrackMomentum; //[fNMom] Track momenta for which response functions are available
- Double_t *fTrackSegLength; //[fNLength] Track segment lengths for which response functions are available
- Int_t fNTimeBins; // Number of time bins
-
- Double_t fMeanChargeRatio; // Ratio of mean charge from real Det. to prob. dist.
- Int_t fNbins; // Number of energy bins
- Double_t fBinSize; // Size of energy bin
-
- TObjArray *fHistdEdx; // Prob. of dEdx for 5 particles and for several momenta
- TObjArray *fHistTimeBin; // Prob. of max time bin for 5 particles and for several momenta
-
- private:
-
- TH1 *h1MaxTB[2]; //!
- AliTRDCalPIDLQRef *fEstimator; //!
-
- ClassDef(AliTRDCalPIDLQ, 2) // The TRD PID response container class
+private:
+ AliTRDCalPIDLQ(const AliTRDCalPIDLQ& pd);
+ AliTRDCalPIDLQ& operator=(const AliTRDCalPIDLQ &c);
+ void Init();
+ ClassDef(AliTRDCalPIDLQ, 2) // LQ PID reference manager
};
+//_________________________________________________________________________
+inline Int_t AliTRDCalPIDLQ::GetModelID(Int_t mom, Int_t spec, Int_t /*ii*/)
+{
+// Returns the ID of the PDF distribution
+// 5 species * 11 momentum ranges
+
+ return spec * AliTRDCalPID::kNMom + mom;
+}
+
+//_________________________________________________________________________
+inline Bool_t AliTRDCalPIDLQ::CookdEdx(const Float_t * const dedx, Double_t *x)
+{
+// Convert NN dEdx slices to the representation used by LQ
+
+ x[0]=0.;x[1]=0.;
+ for(Int_t islice=AliTRDCalPID::kNSlicesNN; islice--;){
+ Int_t jslice = islice>kNN2LQtransition;
+ x[jslice]+=dedx[islice];
+ }
+
+ // check data integrity
+ if(x[0]<1.e-30) return kFALSE;
+ if(x[1]<1.e-30) return kFALSE;
+
+ x[0] = TMath::Log(x[0]);
+ x[1] = TMath::Log(x[1]);
+ return kTRUE;
+}
+
#endif
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff