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[u/mrichter/AliRoot.git] / PHOS / AnaESD.C
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12391a12 1/**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
3 * *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
6 * *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
15/* $Id$ */
16//_________________________________________________________________________
17// Macros analyzing the ESD file
18// Use Case :
19// root> .L AnaESD.C++
20// root> ana() --> prints the objects stored in ESD
21//
22// author : Yves Schutz (CERN/SUBATECH)
23// February 2004
24//_________________________________________________________________________
e82c1b8f 25#if !defined(__CINT__) || defined(__MAKECINT__)
baf5b427 26#include "TFile.h"
c7f69b3a 27#include "TMath.h"
d6faca62 28#include "TH1D.h"
baf5b427 29#include "AliPHOSGetter.h"
2631352f 30#include "AliPHOSGeometry.h"
baf5b427 31#include "Riostream.h"
32#include "AliESD.h"
c7f69b3a 33#include "AliESDtrack.h"
1d13ffb1 34#include "AliESDCaloTrack.h"
35#include "AliEMCALRecParticle.h"
36#include "AliPHOSRecParticle.h"
c7f69b3a 37#include "AliKalmanTrack.h"
44913864 38#include "AliPHOSGridFile.h"
e82c1b8f 39#endif
baf5b427 40
03b531f2 41void Match(TParticle * pp, AliESDtrack * cp, Double_t * dist) ;
42TH1D * heta = new TH1D("heta", "Eta correlation", 100, 0., 360.) ;
43TH1D * hphi = new TH1D("hphi", "Phi correlation", 100, 0., 360.) ;
d31d94a8 44// Data Challenge identification
45const TString kYear("2004") ;
46const TString kProd("02") ;
47const TString kVers("V4.01.Rev.00") ;
03b531f2 48
d31d94a8 49Bool_t Ana(const TString type = "per5", const Int_t run = 1, const Int_t nOfEvt = 1)
d6faca62 50{
03b531f2 51 Double_t dist[3] ;
44913864 52 // get the LFN file name in the Grid catalogue ;
53 AliPHOSGridFile lfn ;
54 if (!lfn.IsConnected())
55 return kFALSE ;
d31d94a8 56 lfn.SetPath(kYear, kProd, kVers, type) ;
57 lfn.SetRun(run) ;
d6faca62 58
d31d94a8 59 //loop over the events
60 Int_t nevt, evt = 0 ;
61 for (nevt = 0 ; nevt < nOfEvt ; nevt++) {
62 evt++ ;
63 lfn.SetEvt(evt) ;
64 TString fileName = lfn.GetLFN() ;
65
66 if (fileName.IsNull()) {
67 nevt-- ;
68 continue ;
69 }
70
71 printf(">>>>>>>>>>>> Processing %s-%s/%s/%s : run # %d event # %d \n",
72 kYear.Data(), kProd.Data(), kVers.Data(), type.Data(), run, evt) ;
73 AliPHOSGetter * gime = AliPHOSGetter::Instance(fileName) ;
74
75 Int_t nEvent = gime->MaxEvent() ;
76 Int_t event ;
77 AliESD * esd = 0 ;
78 for (event = 0 ; event < nEvent; event++) {
79 esd = gime->ESD(event) ;
80 if (!esd)
81 return kFALSE ;
82
83 //esd->Print();
84 Int_t caloindex ;
85 // Calorimeter tracks
86 AliESDCaloTrack * ct ;
87 for (caloindex = 0 ; caloindex < esd->GetNumberOfCaloTracks() ; caloindex++) {
88 // get the calorimeter type of particles (PHOS or EMCAL)
89 ct = esd->GetCaloTrack(caloindex) ;
90 TParticle * part = ct->GetRecParticle() ;
91
92 AliESDtrack * cp ;
93 Int_t cpindex ;
94 for (cpindex = 0 ; cpindex < esd->GetNumberOfTracks() ; cpindex++) {
95 // get the charged tracks from central tracking
96 cp = esd->GetTrack(cpindex) ;
97 Match(part, cp, dist) ;
98 }
99 heta->Fill( dist[1] ) ;
100 hphi->Fill( dist[2] ) ;
c7f69b3a 101 }
102 }
d6faca62 103 }
03b531f2 104 heta->Draw() ;
105 //hphi->Draw() ;
d31d94a8 106 return kTRUE ;
d6faca62 107}
03b531f2 108
109void Match(TParticle * part, AliESDtrack * cp, Double_t * dist)
d6faca62 110{
111 // Calculates the distance (x,z) between the particle detected by PHOS and
112 // the charged particle reconstructed by the global tracking
113
d6faca62 114
115 AliPHOSRecParticle * pp = dynamic_cast<AliPHOSRecParticle*>(part) ;
116 AliEMCALRecParticle * ep = dynamic_cast<AliEMCALRecParticle*>(part) ;
117
118 Int_t phN ;
119 Double_t phZ, phX ;
120
121 if (pp) { // it is a PHOS particle
03b531f2 122 Double_t cpTheta, cpPhi ;
123 Double_t phTheta, phPhi ;
124 cpTheta = cpPhi = phTheta = phPhi = 0. ;
125 // cout << "PHOS particle # " << " pos ("
126 // << pp->GetPos().X() << ", " << pp->GetPos().Y() << ", " << pp->GetPos().Z() << ")" << endl ;
d6faca62 127
128 AliPHOSGetter * gime = AliPHOSGetter::Instance() ;
129 gime->PHOSGeometry()->ImpactOnEmc(*pp, phN, phZ, phX) ;
130 Double_t xyzAtPHOS[3] ;
131 cp->GetOuterXYZ(xyzAtPHOS) ;
132 if ( (xyzAtPHOS[0] + xyzAtPHOS[1] + xyzAtPHOS[2]) != 0.) { //it has reached PHOS
133 //the next check are only if we want high quality tracks
80427b5a 134 // ULong_t status = cp->GetStatus() ;
135 // if ((status & AliESDtrack::kTRDput)==0)
d6faca62 136 // do not continue;
80427b5a 137 // if ((status & AliESDtrack::kTRDStop)!=0)
d6faca62 138 // do not continue;
03b531f2 139 // cout << "Charged particle # " << " pos ("
140 // << xyzAtPHOS[0] << ", " << xyzAtPHOS[1] << ", " << xyzAtPHOS[2] << ")" << endl ;
d6faca62 141 TVector3 poscp(xyzAtPHOS[0], xyzAtPHOS[1], xyzAtPHOS[2]) ;
142 Int_t cpN ;
143 Double_t cpZ,cpX ;
144 gime->PHOSGeometry()->ImpactOnEmc(poscp, cpN, cpZ, cpX) ;
145 if (cpN) {// we are inside the PHOS acceptance
03b531f2 146 // cout << "Charged Matching 1: " << cpN << " " << cpZ << " " << cpX << endl ;
147 // cout << "Charged Matching 2: " << phN << " " << phZ << " " << phX << endl ;
148 dist[0] = TMath::Sqrt( (cpZ-phZ)*(cpZ-phZ) + (cpX-phX)*(cpX-phX)) ;
d6faca62 149 }
03b531f2 150 phTheta = pp->Theta() ;
151 phPhi = pp->Phi() ;
d6faca62 152 TParticle tempo ;
153 tempo.SetMomentum(xyzAtPHOS[0], xyzAtPHOS[1], xyzAtPHOS[2], 0.) ;
03b531f2 154 cpTheta = tempo.Theta() ;
155 cpPhi = tempo.Phi() ;
d6faca62 156 //cout << phTheta << " " << phPhi << " " << endl
157 //cout << cpTheta << " " << cpPhi-phPhi << " " << endl ;
1d13ffb1 158 }
03b531f2 159 dist[1] = (phTheta - cpTheta)*TMath::RadToDeg() ;
160 dist[2] = (phPhi - cpPhi)*TMath::RadToDeg() ;
baf5b427 161 }
d6faca62 162
163 if (ep) {
164 //cout << "EMCAL particle # " << endl ;
165 }
baf5b427 166}