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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" |
e82c1b8f | 38 | #endif |
baf5b427 | 39 | |
d6faca62 | 40 | Double_t Match(TParticle * pp, AliESDtrack * cp) ; |
41 | TH1D * heta = new TH1D("heta", "Eta correlation", 100, -2., 2.) ; | |
42 | TH1D * hphi = new TH1D("hphi", "Phi correlation", 360, 0., 360.) ; | |
43 | ||
baf5b427 | 44 | void Ana() |
d6faca62 | 45 | { |
baf5b427 | 46 | AliPHOSGetter * gime = AliPHOSGetter::Instance("galice.root") ; |
47 | Int_t nEvent = gime->MaxEvent() ; | |
48 | Int_t event ; | |
1d13ffb1 | 49 | AliESD * esd = 0 ; |
baf5b427 | 50 | for (event = 0 ; event < nEvent; event++) { |
51 | esd = gime->ESD(event) ; | |
d6faca62 | 52 | //esd->Print(); |
53 | Int_t caloindex ; | |
c7f69b3a | 54 | // Calorimeter tracks |
1d13ffb1 | 55 | AliESDCaloTrack * ct ; |
d6faca62 | 56 | for (caloindex = 0 ; caloindex < esd->GetNumberOfCaloTracks() ; caloindex++) { |
57 | // get the calorimeter type of particles (PHOS or EMCAL) | |
58 | ct = esd->GetCaloTrack(caloindex) ; | |
59 | TParticle * part = ct->GetRecParticle() ; | |
60 | ||
61 | AliESDtrack * cp ; | |
62 | Int_t cpindex ; | |
63 | for (cpindex = 0 ; cpindex < esd->GetNumberOfTracks() ; cpindex++) { | |
64 | // get the charged tracks from central tracking | |
65 | cp = esd->GetTrack(cpindex) ; | |
66 | Double_t dist = Match(part, cp) ; | |
67 | ||
68 | if (dist < 99999.) | |
69 | cout << "================ Distance = " << dist << endl ; | |
c7f69b3a | 70 | } |
71 | } | |
d6faca62 | 72 | } |
73 | // heta->Draw() ; | |
74 | hphi->Draw() ; | |
75 | } | |
76 | Double_t Match(TParticle * part, AliESDtrack * cp) | |
77 | { | |
78 | // Calculates the distance (x,z) between the particle detected by PHOS and | |
79 | // the charged particle reconstructed by the global tracking | |
80 | ||
81 | Double_t dist = 99999. ; | |
82 | ||
83 | AliPHOSRecParticle * pp = dynamic_cast<AliPHOSRecParticle*>(part) ; | |
84 | AliEMCALRecParticle * ep = dynamic_cast<AliEMCALRecParticle*>(part) ; | |
85 | ||
86 | Int_t phN ; | |
87 | Double_t phZ, phX ; | |
88 | ||
89 | if (pp) { // it is a PHOS particle | |
90 | ||
91 | // cout << "PHOS particle # " << " pos (" | |
92 | // << pp->GetPos().X() << ", " << pp->GetPos().Y() << ", " << pp->GetPos().Z() << ")" << endl ; | |
93 | ||
94 | AliPHOSGetter * gime = AliPHOSGetter::Instance() ; | |
95 | gime->PHOSGeometry()->ImpactOnEmc(*pp, phN, phZ, phX) ; | |
96 | Double_t xyzAtPHOS[3] ; | |
97 | cp->GetOuterXYZ(xyzAtPHOS) ; | |
98 | if ( (xyzAtPHOS[0] + xyzAtPHOS[1] + xyzAtPHOS[2]) != 0.) { //it has reached PHOS | |
99 | //the next check are only if we want high quality tracks | |
80427b5a | 100 | // ULong_t status = cp->GetStatus() ; |
101 | // if ((status & AliESDtrack::kTRDput)==0) | |
d6faca62 | 102 | // do not continue; |
80427b5a | 103 | // if ((status & AliESDtrack::kTRDStop)!=0) |
d6faca62 | 104 | // do not continue; |
105 | // cout << "Charged particle # " << " pos (" | |
106 | // << xyzAtPHOS[0] << ", " << xyzAtPHOS[1] << ", " << xyzAtPHOS[2] << ")" << endl ; | |
107 | TVector3 poscp(xyzAtPHOS[0], xyzAtPHOS[1], xyzAtPHOS[2]) ; | |
108 | Int_t cpN ; | |
109 | Double_t cpZ,cpX ; | |
110 | gime->PHOSGeometry()->ImpactOnEmc(poscp, cpN, cpZ, cpX) ; | |
111 | if (cpN) {// we are inside the PHOS acceptance | |
112 | // cout << "Charged Matching 1: " << cpN << " " << cpZ << " " << cpX << endl ; | |
113 | // cout << "Charged Matching 2: " << phN << " " << phZ << " " << phX << endl ; | |
114 | dist = TMath::Sqrt( (cpZ-phZ)*(cpZ-phZ) + (cpX-phX)*(cpX-phX)) ; | |
115 | } | |
116 | Double_t phTheta = pp->Theta() ; | |
117 | Double_t phPhi = pp->Phi() ; | |
118 | TParticle tempo ; | |
119 | tempo.SetMomentum(xyzAtPHOS[0], xyzAtPHOS[1], xyzAtPHOS[2], 0.) ; | |
120 | Double_t cpTheta = tempo.Theta() ; | |
121 | Double_t cpPhi = tempo.Phi() ; | |
122 | //cout << phTheta << " " << phPhi << " " << endl | |
123 | //cout << cpTheta << " " << cpPhi-phPhi << " " << endl ; | |
124 | heta->Fill( (phTheta - cpTheta)*TMath::RadToDeg() ) ; | |
125 | hphi->Fill( (phPhi - cpPhi)*TMath::RadToDeg() ) ; | |
1d13ffb1 | 126 | } |
baf5b427 | 127 | } |
d6faca62 | 128 | |
129 | if (ep) { | |
130 | //cout << "EMCAL particle # " << endl ; | |
131 | } | |
132 | return dist ; | |
baf5b427 | 133 | } |
d6faca62 | 134 |