[u/mrichter/AliRoot.git] / TPC / AliTPCtrackerParam.h

#ifndef ALITPCTRACKERPARAM_H
#define ALITPCTRACKERPARAM_H
/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. */
/* See cxx source for full Copyright notice                               */

/* $Id$ */


//-----------------------------------------------------------------------------
//                    TPC Tracking Parameterization Class
//
//   Origin: Andrea Dainese, Padova - e-mail: andrea.dainese@pd.infn.it
//-----------------------------------------------------------------------------

//----- Root headers ---------
#include <TMatrixD.h>
//---- AliRoot headers -------
#include "alles.h"
#include "AliGausCorr.h"
#include "AliMagF.h"
#include "AliTPCkineGrid.h"
#include "AliTPCtrack.h"
#include "AliTrackReference.h"
//----------------------------

class AliTPCtrackerParam {
  /////////////////////////////////////////////////////////////////////////
  //                                                                        
  // This class builds AliTPCtrack objects from generated tracks to feed    
  // ITS tracking (V2). The AliTPCtrack is built from its first hit in      
  // the TPC. The track is assigned a Kalman-like covariance matrix         
  // depending on its pT and pseudorapidity and track parameters are        
  // smeared according to this covariance matrix.                           
  // Output file contains sorted tracks, ready for matching with ITS.        
  //                                                                        
  // See implementation file for more details.  
  //                                  
  //                                                                        
  //  Origin: Andrea Dainese, Padova - e-mail: andrea.dainese@pd.infn.it     
  //                                                                        
  /////////////////////////////////////////////////////////////////////////
 public:
  AliTPCtrackerParam(const Int_t coll=0,const Double_t Bz=0.4,const Int_t n=1,
		     const char* evfoldname = AliConfig::fgkDefaultEventFolderName);
  virtual ~AliTPCtrackerParam();

  // this function performs the parameterized tracking
  Int_t BuildTPCtracks(const TFile *inp, TFile *out);

  // these functions are used to create a DB of cov. matrices,
  // including regularization, efficiencies and dE/dx
  void  AllGeantTracks() { fSelAndSmear=kFALSE; return; }
  void  AnalyzedEdx(const Char_t *outName,Int_t pdg);
  void  AnalyzePulls(const Char_t *outName);
  void  AnalyzeResolutions(Int_t pdg);
  void  CompareTPCtracks(const Char_t *galiceName="galice.root",
			 const Char_t *trkGeaName="AliTPCtracksGeant.root",
			 const Char_t *trkKalName="AliTPCtracksSorted.root",
			 const Char_t *covmatName="CovMatrix.root",
			 const Char_t *tpceffasciiName="TPCeff.dat",
			 const Char_t *tpceffrootName="TPCeff.root");
  void  DrawEffs(const Char_t *inName,Int_t pdg=211);
  void  DrawPulls(const Char_t *inName,Int_t pdg=211,Int_t par=0);
  void  MakeDataBase();
  void  MergeEvents(Int_t evFirst=1,Int_t evLast=1);
  void  RegularizeCovMatrix(const Char_t *outName,Int_t pdg);


  //********* Internal class definition *******
  class AliTPCtrackParam : public AliTPCtrack {
  public:
    AliTPCtrackParam():AliTPCtrack(){}
    AliTPCtrackParam(const AliTPCtrack &t):AliTPCtrack(t){}

    void AssignMass(Double_t mass) {SetMass(mass); return;}
    
  private:

  };
  //********* end of internal class ***********

  //********* Internal class definition *******
  class AliTPCseedGeant : public TObject {
  public:
    AliTPCseedGeant(Double_t x,Double_t y,Double_t z,
		    Double_t px,Double_t py,Double_t pz,
		    Int_t lab) {
      fXg = x;
      fYg = y;
      fZg = z;
      fPx = px;
      fPy = py;
      fPz = pz;
      fLabel = lab;
      Double_t a = TMath::ATan2(y,x)*180./TMath::Pi();
      if(a<0) a += 360.;
      fSector = (Int_t)(a/20.);
      fAlpha = 10.+20.*fSector;
      fAlpha /= 180.;
      fAlpha *= TMath::Pi();
    }
    Int_t    GetLabel() { return fLabel; }
    Double_t GetAlpha() { return fAlpha; }      
    Double_t GetXL() { return fXg*TMath::Cos(fAlpha)+fYg*TMath::Sin(fAlpha); }
    Double_t GetYL() { return -fXg*TMath::Sin(fAlpha)+fYg*TMath::Cos(fAlpha); }
    Double_t GetZL() { return fZg; }
    Double_t GetPx() { return fPx; } 
    Double_t GetPy() { return fPy; } 
    Double_t GetPz() { return fPz; } 
    Double_t GetPt() { return TMath::Sqrt(fPx*fPx+fPy*fPy); }
    Double_t GetEta() { return -TMath::Log(TMath::Tan(0.25*TMath::Pi()-0.5*TMath::ATan(fPz/GetPt()))); }
    void     SetLabel(Int_t lab) { fLabel=lab; return; }
    Bool_t   InTPCAcceptance() {
      if(TMath::Abs(GetZL()+(244.-GetXL())*fPz/GetPt())>252.) return kFALSE;
      return kTRUE;
    }

  private:
    Double_t fXg;
    Double_t fYg;
    Double_t fZg;
    Double_t fPx;
    Double_t fPy;
    Double_t fPz;
    Double_t fAlpha;
    Int_t    fLabel;
    Int_t    fSector;
  };
  //******* end of internal class ****************
  
 private:
  TString fEvFolderName;//! name of data folder

  Int_t           fNevents;     // number of events in the file to be processed
  Double_t        fBz;          // value of the z component of L3 field (Tesla)
  Int_t           fColl;        // collision code (0: PbPb6000; 1: pp)
  Bool_t          fSelAndSmear; // if kFALSE returns GEANT tracks 
                                // at TPC first hit 
  TString         fDBfileName;  // DataBase file name
  
  AliTPCtrack     fTrack;    // current track

  TTree          *fCovTree;  // tree with regularized cov matrices 
                             // for the current track

  AliTPCkineGrid *fDBgrid;   // grid for the cov matrix look-up table  
  AliTPCkineGrid  fDBgridPi; //               "                  for pions  
  AliTPCkineGrid  fDBgridKa; //               "                  for kaons
  AliTPCkineGrid  fDBgridPr; //               "                  for protons
  AliTPCkineGrid  fDBgridEl; //               "                  for electrons
  AliTPCkineGrid  fDBgridMu; //               "                  for muons

  AliTPCkineGrid *fEff;   // TPC efficiencies for the current track
  AliTPCkineGrid  fEffPi; //           "        pions 
  AliTPCkineGrid  fEffKa; //           "        kaons 
  AliTPCkineGrid  fEffPr; //           "        protons 
  AliTPCkineGrid  fEffEl; //           "        electrons 
  AliTPCkineGrid  fEffMu; //           "        muons 

  AliTPCkineGrid *fPulls;      // pulls for the current track
  AliTPCkineGrid  fPullsPi[5]; //        "      pions
  AliTPCkineGrid  fPullsKa[5]; //        "      muons
  AliTPCkineGrid  fPullsPr[5]; //        "      protons
  AliTPCkineGrid  fPullsEl[5]; //        "      electrons
  AliTPCkineGrid  fPullsMu[5]; //        "      muons

  TMatrixD       *fRegPar;     // regularization parameters for the curr. track
  TMatrixD        fRegParPi;   //                  "        for pions         
  TMatrixD        fRegParKa;   //                  "        for kaons
  TMatrixD        fRegParPr;   //                  "        for protons
  TMatrixD        fRegParEl;   //                  "        for electrons
  TMatrixD        fRegParMu;   //                  "        for muons

  AliTPCkineGrid *fdEdxMean;   // dEdx mean for the current track
  AliTPCkineGrid  fdEdxMeanPi; //                "     pions
  AliTPCkineGrid  fdEdxMeanKa; //                "     kaons
  AliTPCkineGrid  fdEdxMeanPr; //                "     protons    
  AliTPCkineGrid  fdEdxMeanEl; //                "     electrons
  AliTPCkineGrid  fdEdxMeanMu; //                "     muons

  AliTPCkineGrid *fdEdxRMS;    // dEdx RMS for the current track
  AliTPCkineGrid  fdEdxRMSPi;  //                "     pions
  AliTPCkineGrid  fdEdxRMSKa;  //                "     kaons
  AliTPCkineGrid  fdEdxRMSPr;  //                "     protons    
  AliTPCkineGrid  fdEdxRMSEl;  //                "     electrons
  AliTPCkineGrid  fdEdxRMSMu;  //                "     muons


  void     BuildTrack(AliTPCseedGeant *s,Int_t ch);
  Int_t    CheckLabel(AliTPCseedGeant *s,Int_t nPart,
		      Double_t *ptkine,Double_t *pzkine) const;
  void     CookdEdx(Double_t pt,Double_t eta);
  void     CookTrack(Double_t pt,Double_t eta);
  TMatrixD GetSmearingMatrix(Double_t *cc, Double_t pt,Double_t eta) const;
  void     InitializeKineGrid(Option_t *which);    
  void     MakeSeedsFromHits(AliTPC *TPC,TTree *TH,TObjArray &seedArray) const;
  void     MakeSeedsFromRefs(TTree *TTR,
			     TObjArray &seedArray) const;
  Int_t    ReadAllData(const Char_t *inName);
  Int_t    ReadDBgrid(const Char_t *inName);
  Int_t    ReaddEdx(const Char_t *inName,Int_t pdg);
  Int_t    ReadEffs(const Char_t *inName);
  Int_t    ReadPulls(const Char_t *inName);
  Int_t    ReadRegParams(const Char_t *inName,Int_t pdg);
  Bool_t   SelectedTrack(Double_t pt, Double_t eta) const;
  void     SetParticle(Int_t pdg);  
  void     SmearTrack(Double_t *xx,Double_t *xxsm,TMatrixD cov) const;
  Int_t    WritedEdx(const Char_t *outName,Int_t pdg);
  Int_t    WriteEffs(const Char_t *outName);
  Int_t    WritePulls(const Char_t *outName);
  Int_t    WriteRegParams(const Char_t *outName,Int_t pdg);
  
  
  ClassDef(AliTPCtrackerParam,1) // TPC tracking parameterization class
};

#endif
Commit	Line	Data
6eb67451	1	#ifndef ALITPCTRACKERPARAM_H
	2	#define ALITPCTRACKERPARAM_H
	3	/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. */
	4	/* See cxx source for full Copyright notice */
c68184b6	5
	6	/* $Id$ */
	7
	8
6eb67451	9	//-----------------------------------------------------------------------------
	10	// TPC Tracking Parameterization Class
	11	//
	12	// Origin: Andrea Dainese, Padova - e-mail: andrea.dainese@pd.infn.it
	13	//-----------------------------------------------------------------------------
b2bca9d4	14
b2bca9d4	15	//----- Root headers ---------
6eb69b9a	16	#include <TMatrixD.h>
b2bca9d4	17	//---- AliRoot headers -------
6eb67451	18	#include "alles.h"
70521312	19	#include "AliGausCorr.h"
6eb69b9a	20	#include "AliMagF.h"
6eb69b9a	21	#include "AliTPCkineGrid.h"
6eb67451	22	#include "AliTPCtrack.h"
b2bca9d4	23	#include "AliTrackReference.h"
b2bca9d4	24	//----------------------------
6eb67451	25
6eb67451	26	class AliTPCtrackerParam {
6eb69b9a	27	/////////////////////////////////////////////////////////////////////////
	28	//
	29	// This class builds AliTPCtrack objects from generated tracks to feed
	30	// ITS tracking (V2). The AliTPCtrack is built from its first hit in
	31	// the TPC. The track is assigned a Kalman-like covariance matrix
	32	// depending on its pT and pseudorapidity and track parameters are
	33	// smeared according to this covariance matrix.
	34	// Output file contains sorted tracks, ready for matching with ITS.
	35	//
b2bca9d4	36	// See implementation file for more details.
b2bca9d4	37	//
6eb69b9a	38	//
	39	// Origin: Andrea Dainese, Padova - e-mail: andrea.dainese@pd.infn.it
	40	//
	41	/////////////////////////////////////////////////////////////////////////
6eb67451	42	public:
88cb7938	43	AliTPCtrackerParam(const Int_t coll=0,const Double_t Bz=0.4,const Int_t n=1,
88cb7938	44	const char* evfoldname = AliConfig::fgkDefaultEventFolderName);
6eb67451	45	virtual ~AliTPCtrackerParam();
6eb67451	46
6eb69b9a	47	// this function performs the parameterized tracking
b2bca9d4	48	Int_t BuildTPCtracks(const TFile inp, TFile out);
6eb67451	49
6eb69b9a	50	// these functions are used to create a DB of cov. matrices,
	51	// including regularization, efficiencies and dE/dx
	52	void AllGeantTracks() { fSelAndSmear=kFALSE; return; }
	53	void AnalyzedEdx(const Char_t *outName,Int_t pdg);
	54	void AnalyzePulls(const Char_t *outName);
b2bca9d4	55	void AnalyzeResolutions(Int_t pdg);
6eb69b9a	56	void CompareTPCtracks(const Char_t *galiceName="galice.root",
	57	const Char_t *trkGeaName="AliTPCtracksGeant.root",
	58	const Char_t *trkKalName="AliTPCtracksSorted.root",
	59	const Char_t *covmatName="CovMatrix.root",
b2bca9d4	60	const Char_t *tpceffasciiName="TPCeff.dat",
b2bca9d4	61	const Char_t *tpceffrootName="TPCeff.root");
6eb69b9a	62	void DrawEffs(const Char_t *inName,Int_t pdg=211);
	63	void DrawPulls(const Char_t *inName,Int_t pdg=211,Int_t par=0);
	64	void MakeDataBase();
	65	void MergeEvents(Int_t evFirst=1,Int_t evLast=1);
	66	void RegularizeCovMatrix(const Char_t *outName,Int_t pdg);
	67
b2bca9d4	68
b2bca9d4	69	//******* Internal class definition *****
6eb69b9a	70	class AliTPCtrackParam : public AliTPCtrack {
	71	public:
	72	AliTPCtrackParam():AliTPCtrack(){}
	73	AliTPCtrackParam(const AliTPCtrack &t):AliTPCtrack(t){}
	74
	75	void AssignMass(Double_t mass) {SetMass(mass); return;}
	76
	77	private:
b2bca9d4	78
6eb69b9a	79	};
b2bca9d4	80	//******* end of internal class *********
6eb67451	81
b2bca9d4	82	//******* Internal class definition *****
	83	class AliTPCseedGeant : public TObject {
	84	public:
	85	AliTPCseedGeant(Double_t x,Double_t y,Double_t z,
	86	Double_t px,Double_t py,Double_t pz,
	87	Int_t lab) {
	88	fXg = x;
	89	fYg = y;
	90	fZg = z;
	91	fPx = px;
	92	fPy = py;
	93	fPz = pz;
	94	fLabel = lab;
	95	Double_t a = TMath::ATan2(y,x)*180./TMath::Pi();
	96	if(a<0) a += 360.;
	97	fSector = (Int_t)(a/20.);
	98	fAlpha = 10.+20.*fSector;
	99	fAlpha /= 180.;
	100	fAlpha *= TMath::Pi();
	101	}
	102	Int_t GetLabel() { return fLabel; }
	103	Double_t GetAlpha() { return fAlpha; }
	104	Double_t GetXL() { return fXgTMath::Cos(fAlpha)+fYgTMath::Sin(fAlpha); }
	105	Double_t GetYL() { return -fXgTMath::Sin(fAlpha)+fYgTMath::Cos(fAlpha); }
	106	Double_t GetZL() { return fZg; }
	107	Double_t GetPx() { return fPx; }
	108	Double_t GetPy() { return fPy; }
	109	Double_t GetPz() { return fPz; }
	110	Double_t GetPt() { return TMath::Sqrt(fPxfPx+fPyfPy); }
	111	Double_t GetEta() { return -TMath::Log(TMath::Tan(0.25TMath::Pi()-0.5TMath::ATan(fPz/GetPt()))); }
	112	void SetLabel(Int_t lab) { fLabel=lab; return; }
	113	Bool_t InTPCAcceptance() {
	114	if(TMath::Abs(GetZL()+(244.-GetXL())*fPz/GetPt())>252.) return kFALSE;
	115	return kTRUE;
	116	}
	117
	118	private:
	119	Double_t fXg;
	120	Double_t fYg;
	121	Double_t fZg;
	122	Double_t fPx;
	123	Double_t fPy;
	124	Double_t fPz;
	125	Double_t fAlpha;
	126	Int_t fLabel;
	127	Int_t fSector;
	128	};
	129	//***** end of internal class **************
	130
6eb69b9a	131	private:
88cb7938	132	TString fEvFolderName;//! name of data folder
88cb7938	133
b2bca9d4	134	Int_t fNevents; // number of events in the file to be processed
6eb69b9a	135	Double_t fBz; // value of the z component of L3 field (Tesla)
b2bca9d4	136	Int_t fColl; // collision code (0: PbPb6000; 1: pp)
6eb69b9a	137	Bool_t fSelAndSmear; // if kFALSE returns GEANT tracks
	138	// at TPC first hit
	139	TString fDBfileName; // DataBase file name
6eb67451	140
6eb69b9a	141	AliTPCtrack fTrack; // current track
	142
	143	TTree *fCovTree; // tree with regularized cov matrices
	144	// for the current track
	145
	146	AliTPCkineGrid *fDBgrid; // grid for the cov matrix look-up table
	147	AliTPCkineGrid fDBgridPi; // " for pions
	148	AliTPCkineGrid fDBgridKa; // " for kaons
b2bca9d4	149	AliTPCkineGrid fDBgridPr; // " for protons
6eb69b9a	150	AliTPCkineGrid fDBgridEl; // " for electrons
b2bca9d4	151	AliTPCkineGrid fDBgridMu; // " for muons
6eb69b9a	152
	153	AliTPCkineGrid *fEff; // TPC efficiencies for the current track
	154	AliTPCkineGrid fEffPi; // " pions
	155	AliTPCkineGrid fEffKa; // " kaons
	156	AliTPCkineGrid fEffPr; // " protons
	157	AliTPCkineGrid fEffEl; // " electrons
	158	AliTPCkineGrid fEffMu; // " muons
	159
	160	AliTPCkineGrid *fPulls; // pulls for the current track
	161	AliTPCkineGrid fPullsPi[5]; // " pions
	162	AliTPCkineGrid fPullsKa[5]; // " muons
b2bca9d4	163	AliTPCkineGrid fPullsPr[5]; // " protons
6eb69b9a	164	AliTPCkineGrid fPullsEl[5]; // " electrons
b2bca9d4	165	AliTPCkineGrid fPullsMu[5]; // " muons
6eb69b9a	166
	167	TMatrixD *fRegPar; // regularization parameters for the curr. track
	168	TMatrixD fRegParPi; // " for pions
	169	TMatrixD fRegParKa; // " for kaons
b2bca9d4	170	TMatrixD fRegParPr; // " for protons
6eb69b9a	171	TMatrixD fRegParEl; // " for electrons
b2bca9d4	172	TMatrixD fRegParMu; // " for muons
6eb69b9a	173
	174	AliTPCkineGrid *fdEdxMean; // dEdx mean for the current track
	175	AliTPCkineGrid fdEdxMeanPi; // " pions
	176	AliTPCkineGrid fdEdxMeanKa; // " kaons
	177	AliTPCkineGrid fdEdxMeanPr; // " protons
	178	AliTPCkineGrid fdEdxMeanEl; // " electrons
b2bca9d4	179	AliTPCkineGrid fdEdxMeanMu; // " muons
6eb69b9a	180
	181	AliTPCkineGrid *fdEdxRMS; // dEdx RMS for the current track
	182	AliTPCkineGrid fdEdxRMSPi; // " pions
	183	AliTPCkineGrid fdEdxRMSKa; // " kaons
	184	AliTPCkineGrid fdEdxRMSPr; // " protons
	185	AliTPCkineGrid fdEdxRMSEl; // " electrons
b2bca9d4	186	AliTPCkineGrid fdEdxRMSMu; // " muons
6eb69b9a	187
6eb69b9a	188
b2bca9d4	189	void BuildTrack(AliTPCseedGeant *s,Int_t ch);
	190	Int_t CheckLabel(AliTPCseedGeant *s,Int_t nPart,
	191	Double_t ptkine,Double_t pzkine) const;
6eb69b9a	192	void CookdEdx(Double_t pt,Double_t eta);
6eb69b9a	193	void CookTrack(Double_t pt,Double_t eta);
6eb69b9a	194	TMatrixD GetSmearingMatrix(Double_t *cc, Double_t pt,Double_t eta) const;
b2bca9d4	195	void InitializeKineGrid(Option_t *which);
	196	void MakeSeedsFromHits(AliTPC TPC,TTree TH,TObjArray &seedArray) const;
	197	void MakeSeedsFromRefs(TTree *TTR,
	198	TObjArray &seedArray) const;
6eb69b9a	199	Int_t ReadAllData(const Char_t *inName);
	200	Int_t ReadDBgrid(const Char_t *inName);
	201	Int_t ReaddEdx(const Char_t *inName,Int_t pdg);
	202	Int_t ReadEffs(const Char_t *inName);
	203	Int_t ReadPulls(const Char_t *inName);
	204	Int_t ReadRegParams(const Char_t *inName,Int_t pdg);
	205	Bool_t SelectedTrack(Double_t pt, Double_t eta) const;
	206	void SetParticle(Int_t pdg);
	207	void SmearTrack(Double_t xx,Double_t xxsm,TMatrixD cov) const;
	208	Int_t WritedEdx(const Char_t *outName,Int_t pdg);
	209	Int_t WriteEffs(const Char_t *outName);
	210	Int_t WritePulls(const Char_t *outName);
	211	Int_t WriteRegParams(const Char_t *outName,Int_t pdg);
6eb67451	212
6eb67451	213
e130146c	214	ClassDef(AliTPCtrackerParam,1) // TPC tracking parameterization class
6eb67451	215	};
	216
	217	#endif
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