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e62c1aea 1#ifndef AliITSSTEERPID_H
2#define AliITSSTEERPID_H
3////////////////////////////////////////////////////////////////////////
4//Steering lass for PID in ITS //
5//The PID is based on the likelihood of all the four ITS' layers, //
6//without using the truncated mean for the dE/dx. The response //
7//functions for each layer are convoluted Landau-Gaussian functions. //
8//Origin: Elena Bruna bruna@to.infn.it, Massimo Masera masera@to.infn.it//
9////////////////////////////////////////////////////////////////////////
10
1fad94b4 11/* $Id$ */
12
e62c1aea 13#include <TObject.h>
14#include <Riostream.h>
15#include <TF1.h>
16#include <TTree.h>
17#include <TFile.h>
18#include "AliITSPidParItem.h"
19
20
21class AliITSSteerPid : public TObject{
22
23 public:
24 AliITSSteerPid();
25 virtual ~AliITSSteerPid();
1fad94b4 26 void InitLayer(TString fileITS="$ALICE_ROOT/ITS/farrfitits.root",TString fileFitPar="$ALICE_ROOT/ITS/ffitparams.root");
e62c1aea 27
28 AliITSPidParItem* GetItemLayer(Int_t nolay,Float_t mom);
29 void GetParFitLayer(Int_t nolay,Float_t mom,Double_t *parp,Double_t *park,Double_t *parpi);
30 static void GetLangausProPars(Float_t mom,Double_t *parfit0,Double_t *parfit1,Double_t *parfit3,Double_t *par);
31 static void GetLangausKaoPars(Float_t mom,Double_t *parfit0,Double_t *parfit1,Double_t *parfit3,Double_t *par);
32 static void GetLangausPiPars(Float_t mom,Double_t *parfit0,Double_t *parfit1,Double_t *parfit3,Double_t *par);
33
34
35 private:
36
37 AliITSPidParItem* Item(TClonesArray *Vect,Float_t mom);
38 AliITSSteerPid(const AliITSSteerPid &ob); // copy constructor
94631b2f 39 AliITSSteerPid& operator=(const AliITSSteerPid & ob); // ass. op.
e62c1aea 40
41
42 TFile *fClonarr2; // file of TClones Array
43 TClonesArray *fVect2; // TClonesArray fVect
44 TClonesArray *fVect2lay1; // TClonesArray for layer 1 (SDD1)
45 TClonesArray *fVect2lay2; // TClonesArray for layer 2 (SDD2)
46 TClonesArray *fVect2lay3; // TClonesArray for layer 3 (SSD1)
47 TClonesArray *fVect2lay4; // TClonesArray for layer 4 (SSD2)
48 TTree* fFitTree; // tree
49 AliITSPidParItem *fItem; //element of TClonesArray of interest
50 Float_t fPCenter; //value for center
51 Float_t fPWidth; //value for width
52 Double_t fBuff[52]; //array for
53
54
55 ClassDef(AliITSSteerPid,1);
56
57
58};
59#endif