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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 | |
03b531f2 | 40 | void Match(TParticle * pp, AliESDtrack * cp, Double_t * dist) ; |
41 | TH1D * heta = new TH1D("heta", "Eta correlation", 100, 0., 360.) ; | |
42 | TH1D * hphi = new TH1D("hphi", "Phi correlation", 100, 0., 360.) ; | |
d6faca62 | 43 | |
03b531f2 | 44 | |
baf5b427 | 45 | void Ana() |
d6faca62 | 46 | { |
03b531f2 | 47 | Double_t dist[3] ; |
baf5b427 | 48 | AliPHOSGetter * gime = AliPHOSGetter::Instance("galice.root") ; |
49 | Int_t nEvent = gime->MaxEvent() ; | |
50 | Int_t event ; | |
1d13ffb1 | 51 | AliESD * esd = 0 ; |
baf5b427 | 52 | for (event = 0 ; event < nEvent; event++) { |
53 | esd = gime->ESD(event) ; | |
d6faca62 | 54 | //esd->Print(); |
55 | Int_t caloindex ; | |
c7f69b3a | 56 | // Calorimeter tracks |
1d13ffb1 | 57 | AliESDCaloTrack * ct ; |
d6faca62 | 58 | for (caloindex = 0 ; caloindex < esd->GetNumberOfCaloTracks() ; caloindex++) { |
59 | // get the calorimeter type of particles (PHOS or EMCAL) | |
60 | ct = esd->GetCaloTrack(caloindex) ; | |
61 | TParticle * part = ct->GetRecParticle() ; | |
62 | ||
63 | AliESDtrack * cp ; | |
64 | Int_t cpindex ; | |
65 | for (cpindex = 0 ; cpindex < esd->GetNumberOfTracks() ; cpindex++) { | |
66 | // get the charged tracks from central tracking | |
67 | cp = esd->GetTrack(cpindex) ; | |
03b531f2 | 68 | Match(part, cp, dist) ; |
c7f69b3a | 69 | } |
03b531f2 | 70 | heta->Fill( dist[1] ) ; |
71 | hphi->Fill( dist[2] ) ; | |
c7f69b3a | 72 | } |
d6faca62 | 73 | } |
03b531f2 | 74 | heta->Draw() ; |
75 | //hphi->Draw() ; | |
d6faca62 | 76 | } |
03b531f2 | 77 | |
78 | void Match(TParticle * part, AliESDtrack * cp, Double_t * dist) | |
d6faca62 | 79 | { |
80 | // Calculates the distance (x,z) between the particle detected by PHOS and | |
81 | // the charged particle reconstructed by the global tracking | |
82 | ||
d6faca62 | 83 | |
84 | AliPHOSRecParticle * pp = dynamic_cast<AliPHOSRecParticle*>(part) ; | |
85 | AliEMCALRecParticle * ep = dynamic_cast<AliEMCALRecParticle*>(part) ; | |
86 | ||
87 | Int_t phN ; | |
88 | Double_t phZ, phX ; | |
89 | ||
90 | if (pp) { // it is a PHOS particle | |
03b531f2 | 91 | Double_t cpTheta, cpPhi ; |
92 | Double_t phTheta, phPhi ; | |
93 | cpTheta = cpPhi = phTheta = phPhi = 0. ; | |
94 | // cout << "PHOS particle # " << " pos (" | |
95 | // << pp->GetPos().X() << ", " << pp->GetPos().Y() << ", " << pp->GetPos().Z() << ")" << endl ; | |
d6faca62 | 96 | |
97 | AliPHOSGetter * gime = AliPHOSGetter::Instance() ; | |
98 | gime->PHOSGeometry()->ImpactOnEmc(*pp, phN, phZ, phX) ; | |
99 | Double_t xyzAtPHOS[3] ; | |
100 | cp->GetOuterXYZ(xyzAtPHOS) ; | |
101 | if ( (xyzAtPHOS[0] + xyzAtPHOS[1] + xyzAtPHOS[2]) != 0.) { //it has reached PHOS | |
102 | //the next check are only if we want high quality tracks | |
80427b5a | 103 | // ULong_t status = cp->GetStatus() ; |
104 | // if ((status & AliESDtrack::kTRDput)==0) | |
d6faca62 | 105 | // do not continue; |
80427b5a | 106 | // if ((status & AliESDtrack::kTRDStop)!=0) |
d6faca62 | 107 | // do not continue; |
03b531f2 | 108 | // cout << "Charged particle # " << " pos (" |
109 | // << xyzAtPHOS[0] << ", " << xyzAtPHOS[1] << ", " << xyzAtPHOS[2] << ")" << endl ; | |
d6faca62 | 110 | TVector3 poscp(xyzAtPHOS[0], xyzAtPHOS[1], xyzAtPHOS[2]) ; |
111 | Int_t cpN ; | |
112 | Double_t cpZ,cpX ; | |
113 | gime->PHOSGeometry()->ImpactOnEmc(poscp, cpN, cpZ, cpX) ; | |
114 | if (cpN) {// we are inside the PHOS acceptance | |
03b531f2 | 115 | // cout << "Charged Matching 1: " << cpN << " " << cpZ << " " << cpX << endl ; |
116 | // cout << "Charged Matching 2: " << phN << " " << phZ << " " << phX << endl ; | |
117 | dist[0] = TMath::Sqrt( (cpZ-phZ)*(cpZ-phZ) + (cpX-phX)*(cpX-phX)) ; | |
d6faca62 | 118 | } |
03b531f2 | 119 | phTheta = pp->Theta() ; |
120 | phPhi = pp->Phi() ; | |
d6faca62 | 121 | TParticle tempo ; |
122 | tempo.SetMomentum(xyzAtPHOS[0], xyzAtPHOS[1], xyzAtPHOS[2], 0.) ; | |
03b531f2 | 123 | cpTheta = tempo.Theta() ; |
124 | cpPhi = tempo.Phi() ; | |
d6faca62 | 125 | //cout << phTheta << " " << phPhi << " " << endl |
126 | //cout << cpTheta << " " << cpPhi-phPhi << " " << endl ; | |
1d13ffb1 | 127 | } |
03b531f2 | 128 | dist[1] = (phTheta - cpTheta)*TMath::RadToDeg() ; |
129 | dist[2] = (phPhi - cpPhi)*TMath::RadToDeg() ; | |
baf5b427 | 130 | } |
d6faca62 | 131 | |
132 | if (ep) { | |
133 | //cout << "EMCAL particle # " << endl ; | |
134 | } | |
baf5b427 | 135 | } |
d6faca62 | 136 |