Coreections to Jet Chemistry Task (Oliver Busch), add it now to the compilation of...
[u/mrichter/AliRoot.git] / MUON / MUONRecoCheck.C
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b8dc484b 1/**************************************************************************
48217459 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**************************************************************************/
b8dc484b 15
e54bf126 16// $Id$
17
18/// \ingroup macros
19/// \file MUONRecoCheck.C
20/// \brief Utility macro to check the muon reconstruction.
21///
22/// Reconstructed tracks are compared to reference tracks. The reference tracks
23/// are built from AliTrackReference for the hit in chamber (0..9) and from
24/// kinematics (TreeK) for the vertex parameters.
25///
c687aa97 26/// \author Jean-Pierre Cussonneau, Philippe Pillot, Subatech
e54bf126 27
b8dc484b 28// ROOT includes
e1fe81b8 29#include <Riostream.h>
f202486b 30#include "TMath.h"
b8dc484b 31#include "TClonesArray.h"
32#include "TH1.h"
f202486b 33#include "TH2.h"
c687aa97 34#include "TH3.h"
f202486b 35#include "TGraphErrors.h"
e1fe81b8 36#include "TGraphAsymmErrors.h"
f202486b 37#include "TF1.h"
b8dc484b 38#include "TFile.h"
c687aa97 39#include "TCanvas.h"
40#include "TLegend.h"
e1fe81b8 41#include "TGeoManager.h"
b8dc484b 42
43// STEER includes
a99c3449 44#include "AliCDBManager.h"
e1fe81b8 45#include "AliGeomManager.h"
c687aa97 46#include "AliLog.h"
b8dc484b 47
48// MUON includes
a99c3449 49#include "AliMUONCDB.h"
b8dc484b 50#include "AliMUONConstants.h"
51#include "AliMUONTrack.h"
52#include "AliMUONRecoCheck.h"
53#include "AliMUONTrackParam.h"
a99c3449 54#include "AliMUONRecoParam.h"
48217459 55#include "AliMUONVTrackStore.h"
f202486b 56#include "AliMUONVCluster.h"
c687aa97 57#include "AliMUONTrackExtrap.h"
e1fe81b8 58#include "AliMUONESDInterface.h"
9f164762 59#include "AliMUONVTriggerTrackStore.h"
60#include "AliMUONTriggerTrack.h"
b8dc484b 61
c687aa97 62Double_t langaufun(Double_t *x, Double_t *par);
e1fe81b8 63void FitGausResVsMom(TH2* h, Int_t nBins, const Double_t mean0, const Double_t sigma0, const char* fitting, TGraphAsymmErrors* gMean, TGraphAsymmErrors* gSigma);
64void FitPDCAVsMom(TH2* h, Int_t nBins, const char* fitting, TGraphAsymmErrors* gSigma);
65TCanvas* DrawVsAng(const char* name, const char* title, TH1* h1, TH2* h2);
66TCanvas* DrawVsPos(const char* name, const char* title, TH2* h1, TH2* h2, TH2* h3);
67TCanvas* DrawResMomVsMom(const char* name, const char* title, TH2* h, Int_t nBins, TF1* f2 = 0x0, const char* fitting = "");
c687aa97 68
69//------------------------------------------------------------------------------------
70void MUONRecoCheck (Int_t nEvent = -1, const char* pathSim="./generated/", const char* esdFileName="AliESDs.root",
e1fe81b8 71 const char* ocdbPath = "local://$ALICE_ROOT/OCDB", Int_t absorberRegion = -1)
e54bf126 72{
e1fe81b8 73 /// Associate the reconstructed tracks with the simulated ones and check the quality of the reconstruction
74 /// (tracking/trigger efficiency; momentum, slope,... resolutions at first cluster and at vertex; cluster resolution).
75 /// You can limit the calculation of track resolution at vertex to the tracks crossing the absorber in a given region
76 /// with the flag "absorberRegion": -1=all, 1=[2,3]deg, 2=[3,10]deg.
77
78 Double_t aAbsLimits[2];
79 if (absorberRegion > -1) {
80 if (absorberRegion == 1) {
81 aAbsLimits[0] = 2.;
82 aAbsLimits[1] = 3.;
83 } else if (absorberRegion == 2) {
84 aAbsLimits[0] = 3.;
85 aAbsLimits[1] = 10.;
86 } else {
87 cout<<"Unknown absorber region. Valid choices are: -1=all, 1=[2,3]deg, 2=[3,10]deg"<<endl;
88 return;
89 }
90 } else {
91 aAbsLimits[0] = 0.;
92 aAbsLimits[1] = 90.;
93 }
b8dc484b 94
c687aa97 95 AliLog::SetClassDebugLevel("AliMCEvent",-1);
96
97 // ###################################### define histograms ###################################### //
b8dc484b 98 // File for histograms and histogram booking
99 TFile *histoFile = new TFile("MUONRecoCheck.root", "RECREATE");
48217459 100
9f164762 101 TH1F *hReconstructible = new TH1F("hReconstructible"," Nb of reconstructible tracks / evt",15,-0.5,14.5);
b8dc484b 102 TH1F *hReco = new TH1F("hReco"," Nb of reconstructed tracks / evt",15,-0.5,14.5);
96ebe67e 103 TH1F *hNClusterComp = new TH1F("hNClusterComp"," Nb of compatible clusters / track ",15,-0.5,14.5);
b8dc484b 104 TH1F *hTrackRefID = new TH1F("hTrackRefID"," track reference ID ",100,-0.5,99.5);
9f164762 105 TH1F *hTriggerable = new TH1F("hTriggerable"," Nb of triggerable tracks / evt",15,-0.5,14.5);
106 TH1F *hTriggered = new TH1F("hTriggered"," Nb of triggered tracks / evt",15,-0.5,14.5);
b8dc484b 107
c687aa97 108 // momentum resolution at vertex
109 histoFile->mkdir("momentumAtVertex","momentumAtVertex");
110 histoFile->cd("momentumAtVertex");
111
112 const Int_t pNBins = 30;
113 const Double_t pEdges[2] = {0., 300.};
114 const Int_t deltaPAtVtxNBins = 250;
115 const Double_t deltaPAtVtxEdges[2] = {-35., 15.};
116
117 TH1F *hResMomVertex = new TH1F("hResMomVertex"," delta P at vertex;#Delta_{p} (GeV/c)",deltaPAtVtxNBins,deltaPAtVtxEdges[0],deltaPAtVtxEdges[1]);
118
119 TH2D *hResMomVertexVsMom = new TH2D("hResMomVertexVsMom","#Delta_{p} at vertex versus p;p (GeV/c);#Delta_{p} (GeV/c)",2*pNBins,pEdges[0],pEdges[1],deltaPAtVtxNBins,deltaPAtVtxEdges[0],deltaPAtVtxEdges[1]);
120 TH2D *hResMomVertexVsMom_2_3_Deg = new TH2D("hResMomVertexVsMom_2_3_Deg","#Delta_{p} at vertex versus p for tracks between 2 and 3 degrees at absorber end;p (GeV/c);#Delta_{p} (GeV/c)",2*pNBins,pEdges[0],pEdges[1],deltaPAtVtxNBins,deltaPAtVtxEdges[0],deltaPAtVtxEdges[1]);
121 TH2D *hResMomVertexVsMom_3_10_Deg = new TH2D("hResMomVertexVsMom_3_10_Deg","#Delta_{p} at vertex versus p for tracks between 3 and 10 degrees at absorber end;p (GeV/c);#Delta_{p} (GeV/c)",2*pNBins,pEdges[0],pEdges[1],deltaPAtVtxNBins,deltaPAtVtxEdges[0],deltaPAtVtxEdges[1]);
122 TH2D *hResMomVertexVsMom_0_2_DegMC = new TH2D("hResMomVertexVsMom_0_2_DegMC","#Delta_{p} at vertex versus p for tracks with MC angle below 2 degrees;p (GeV/c);#Delta_{p} (GeV/c)",2*pNBins,pEdges[0],pEdges[1],deltaPAtVtxNBins/10,deltaPAtVtxEdges[0],deltaPAtVtxEdges[1]);
123
e1fe81b8 124 TH2D *hResMomVertexVsPosAbsEnd_0_2_DegMC = new TH2D("hResMomVertexVsPosAbsEnd_0_2_DegMC","#Delta_{p} at vertex versus track position at absorber end for tracks with MC angle < 2 degrees;position (cm);#Delta_{p} (GeV/c)",1000,0.,100.,deltaPAtVtxNBins,deltaPAtVtxEdges[0],deltaPAtVtxEdges[1]);
125 TH2D *hResMomVertexVsPosAbsEnd_2_3_DegMC = new TH2D("hResMomVertexVsPosAbsEnd_2_3_DegMC","#Delta_{p} at vertex versus track position at absorber end for tracks with MC angle in [2,3[ degrees;position (cm);#Delta_{p} (GeV/c)",1000,0.,100.,deltaPAtVtxNBins,deltaPAtVtxEdges[0],deltaPAtVtxEdges[1]);
126 TH2D *hResMomVertexVsPosAbsEnd_3_10_DegMC = new TH2D("hResMomVertexVsPosAbsEnd_3_10_DegMC","#Delta_{p} at vertex versus track position at absorber end for tracks with MC angle in [3,10[ degrees;position (cm);#Delta_{p} (GeV/c)",1000,0.,100.,deltaPAtVtxNBins,deltaPAtVtxEdges[0],deltaPAtVtxEdges[1]);
c687aa97 127
128 TH2D *hResMomVertexVsAngle = new TH2D("hResMomVertexVsAngle","#Delta_{p} at vertex versus track position at absorber end converted to degrees;angle (Deg);#Delta_{p} (GeV/c)",10,0.,10.,deltaPAtVtxNBins,deltaPAtVtxEdges[0],deltaPAtVtxEdges[1]);
129 TH2D *hResMomVertexVsMCAngle = new TH2D("hResMomVertexVsMCAngle","#Delta_{p} at vertex versus MC angle;MC angle (Deg);#Delta_{p} (GeV/c)",10,0.,10.,deltaPAtVtxNBins,deltaPAtVtxEdges[0],deltaPAtVtxEdges[1]);
130 TH3D *hResMomVertexVsAngleVsMom = new TH3D("hResMomVertexVsAngleVsMom","#Delta_{p} at vertex versus track position at absorber end converted to degrees versus momentum;p (GeV/c);angle (Deg);#Delta_{p} (GeV/c)",2*pNBins,pEdges[0],pEdges[1],100,0.,10.,deltaPAtVtxNBins,deltaPAtVtxEdges[0],deltaPAtVtxEdges[1]);
131
e1fe81b8 132 TGraphAsymmErrors* gMeanResMomVertexVsMom = new TGraphAsymmErrors(pNBins);
c687aa97 133 gMeanResMomVertexVsMom->SetName("gMeanResMomVertexVsMom");
134 gMeanResMomVertexVsMom->SetTitle("<#Delta_{p}> at vertex versus p;p (GeV/c);<#Delta_{p}> (GeV/c)");
e1fe81b8 135 TGraphAsymmErrors* gMostProbResMomVertexVsMom = new TGraphAsymmErrors(pNBins);
c687aa97 136 gMostProbResMomVertexVsMom->SetName("gMostProbResMomVertexVsMom");
137 gMostProbResMomVertexVsMom->SetTitle("Most probable #Delta_{p} at vertex versus p;p (GeV/c);Most prob. #Delta_{p} (GeV/c)");
e1fe81b8 138 TGraphAsymmErrors* gSigmaResMomVertexVsMom = new TGraphAsymmErrors(pNBins);
c687aa97 139 gSigmaResMomVertexVsMom->SetName("gSigmaResMomVertexVsMom");
e1fe81b8 140 gSigmaResMomVertexVsMom->SetTitle("#sigma_{p}/p at vertex versus p;p (GeV/c);#sigma_{p}/p (%)");
c687aa97 141
142 // momentum resolution at first cluster
143 histoFile->mkdir("momentumAtFirstCluster","momentumAtFirstCluster");
144 histoFile->cd("momentumAtFirstCluster");
145
146 const Int_t deltaPAtFirstClNBins = 500;
147 const Double_t deltaPAtFirstClEdges[2] = {-25., 25.};
148
149 TH1F *hResMomFirstCluster = new TH1F("hResMomFirstCluster"," delta P at first cluster;#Delta_{p} (GeV/c)",deltaPAtFirstClNBins,deltaPAtFirstClEdges[0],deltaPAtFirstClEdges[1]);
150 TH2D *hResMomFirstClusterVsMom = new TH2D("hResMomFirstClusterVsMom","#Delta_{p} at first cluster versus p;p (GeV/c);#Delta_{p} (GeV/c)",2*pNBins,pEdges[0],pEdges[1],deltaPAtFirstClNBins,deltaPAtFirstClEdges[0],deltaPAtFirstClEdges[1]);
151
e1fe81b8 152 TGraphAsymmErrors* gMeanResMomFirstClusterVsMom = new TGraphAsymmErrors(pNBins);
c687aa97 153 gMeanResMomFirstClusterVsMom->SetName("gMeanResMomFirstClusterVsMom");
154 gMeanResMomFirstClusterVsMom->SetTitle("<#Delta_{p}> at first cluster versus p;p (GeV/c);<#Delta_{p}> (GeV/c)");
e1fe81b8 155 TGraphAsymmErrors* gSigmaResMomFirstClusterVsMom = new TGraphAsymmErrors(pNBins);
c687aa97 156 gSigmaResMomFirstClusterVsMom->SetName("gSigmaResMomFirstClusterVsMom");
e1fe81b8 157 gSigmaResMomFirstClusterVsMom->SetTitle("#sigma_{p}/p at first cluster versus p;p (GeV/c);#sigma_{p}/p (%)");
158
159 // angular resolution at vertex
160 histoFile->mkdir("slopesAtVertex","slopesAtVertex");
161 histoFile->cd("slopesAtVertex");
162
163 const Int_t deltaSlopeAtVtxNBins = 500;
164 const Double_t deltaSlopeAtVtxEdges[2] = {-0.05, 0.05};
165
166 TH1F *hResSlopeXVertex = new TH1F("hResSlopeXVertex","#Delta_{slope_{X}} at vertex;#Delta_{slope_{X}}", deltaSlopeAtVtxNBins, deltaSlopeAtVtxEdges[0], deltaSlopeAtVtxEdges[1]);
167 TH1F *hResSlopeYVertex = new TH1F("hResSlopeYVertex","#Delta_{slope_{Y}} at vertex;#Delta_{slope_{Y}}", deltaSlopeAtVtxNBins, deltaSlopeAtVtxEdges[0], deltaSlopeAtVtxEdges[1]);
168 TH2D *hResSlopeXVertexVsMom = new TH2D("hResSlopeXVertexVsMom","#Delta_{slope_{X}} at vertex versus p;p (GeV/c);#Delta_{slope_{X}}",2*pNBins,pEdges[0],pEdges[1], deltaSlopeAtVtxNBins, deltaSlopeAtVtxEdges[0], deltaSlopeAtVtxEdges[1]);
169 TH2D *hResSlopeYVertexVsMom = new TH2D("hResSlopeYVertexVsMom","#Delta_{slope_{Y}} at vertex versus p;p (GeV/c);#Delta_{slope_{Y}}",2*pNBins,pEdges[0],pEdges[1], deltaSlopeAtVtxNBins, deltaSlopeAtVtxEdges[0], deltaSlopeAtVtxEdges[1]);
170
171 TH2D *hResSlopeXVertexVsPosAbsEnd_0_2_DegMC = new TH2D("hResSlopeXVertexVsPosAbsEnd_0_2_DegMC","#Delta_{slope_{X}} at vertex versus track position at absorber end for tracks with MC angle < 2 degrees;position (cm);#Delta_{slope_{X}}",1000,0.,100.,deltaSlopeAtVtxNBins, deltaSlopeAtVtxEdges[0], deltaSlopeAtVtxEdges[1]);
172 TH2D *hResSlopeYVertexVsPosAbsEnd_0_2_DegMC = new TH2D("hResSlopeYVertexVsPosAbsEnd_0_2_DegMC","#Delta_{slope_{Y}} at vertex versus track position at absorber end for tracks with MC angle < 2 degrees;position (cm);#Delta_{slope_{Y}}",1000,0.,100.,deltaSlopeAtVtxNBins, deltaSlopeAtVtxEdges[0], deltaSlopeAtVtxEdges[1]);
173 TH2D *hResSlopeXVertexVsPosAbsEnd_2_3_DegMC = new TH2D("hResSlopeXVertexVsPosAbsEnd_2_3_DegMC","#Delta_{slope_{X}} at vertex versus track position at absorber end for tracks with MC angle in [2,3[ degrees;position (cm);#Delta_{slope_{X}}",1000,0.,100.,deltaSlopeAtVtxNBins, deltaSlopeAtVtxEdges[0], deltaSlopeAtVtxEdges[1]);
174 TH2D *hResSlopeYVertexVsPosAbsEnd_2_3_DegMC = new TH2D("hResSlopeYVertexVsPosAbsEnd_2_3_DegMC","#Delta_{slope_{Y}} at vertex versus track position at absorber end for tracks with MC angle in [2,3[ degrees;position (cm);#Delta_{slope_{Y}}",1000,0.,100.,deltaSlopeAtVtxNBins, deltaSlopeAtVtxEdges[0], deltaSlopeAtVtxEdges[1]);
175 TH2D *hResSlopeXVertexVsPosAbsEnd_3_10_DegMC = new TH2D("hResSlopeXVertexVsPosAbsEnd_3_10_DegMC","#Delta_{slope_{X}} at vertex versus track position at absorber end for tracks with MC angle in [3,10[ degrees;position (cm);#Delta_{slope_{X}}",1000,0.,100.,deltaSlopeAtVtxNBins, deltaSlopeAtVtxEdges[0], deltaSlopeAtVtxEdges[1]);
176 TH2D *hResSlopeYVertexVsPosAbsEnd_3_10_DegMC = new TH2D("hResSlopeYVertexVsPosAbsEnd_3_10_DegMC","#Delta_{slope_{Y}} at vertex versus track position at absorber end for tracks with MC angle in [3,10[ degrees;position (cm);#Delta_{slope_{Y}}",1000,0.,100.,deltaSlopeAtVtxNBins, deltaSlopeAtVtxEdges[0], deltaSlopeAtVtxEdges[1]);
177
178 TH2D *hResSlopeXVertexVsAngle = new TH2D("hResSlopeXVertexVsAngle","#Delta_{slope_{X}} at vertex versus track position at absorber end converted to degrees;angle (Deg);#Delta_{slope_{X}}",10,0.,10.,deltaSlopeAtVtxNBins, deltaSlopeAtVtxEdges[0], deltaSlopeAtVtxEdges[1]);
179 TH2D *hResSlopeYVertexVsAngle = new TH2D("hResSlopeYVertexVsAngle","#Delta_{slope_{Y}} at vertex versus track position at absorber end converted to degrees;angle (Deg);#Delta_{slope_{Y}}",10,0.,10.,deltaSlopeAtVtxNBins, deltaSlopeAtVtxEdges[0], deltaSlopeAtVtxEdges[1]);
180 TH2D *hResSlopeXVertexVsMCAngle = new TH2D("hResSlopeXVertexVsMCAngle","#Delta_{slope_{X}} at vertex versus MC angle;MC angle (Deg);#Delta_{slope_{X}}",10,0.,10.,deltaSlopeAtVtxNBins, deltaSlopeAtVtxEdges[0], deltaSlopeAtVtxEdges[1]);
181 TH2D *hResSlopeYVertexVsMCAngle = new TH2D("hResSlopeYVertexVsMCAngle","#Delta_{slope_{Y}} at vertex versus MC angle;MC angle (Deg);#Delta_{slope_{Y}}",10,0.,10.,deltaSlopeAtVtxNBins, deltaSlopeAtVtxEdges[0], deltaSlopeAtVtxEdges[1]);
182
183 TGraphAsymmErrors* gMeanResSlopeXVertexVsMom = new TGraphAsymmErrors(pNBins);
184 gMeanResSlopeXVertexVsMom->SetName("gMeanResSlopeXVertexVsMom");
185 gMeanResSlopeXVertexVsMom->SetTitle("<#Delta_{slope_{X}}> at vertex versus p;p (GeV/c);<#Delta_{slope_{X}}>");
186 TGraphAsymmErrors* gSigmaResSlopeXVertexVsMom = new TGraphAsymmErrors(pNBins);
187 gSigmaResSlopeXVertexVsMom->SetName("gSigmaResSlopeXVertexVsMom");
188 gSigmaResSlopeXVertexVsMom->SetTitle("#sigma_{slope_{X}} at vertex versus p;p (GeV/c);#sigma_{slope_{X}}");
189 TGraphAsymmErrors* gMeanResSlopeYVertexVsMom = new TGraphAsymmErrors(pNBins);
190 gMeanResSlopeYVertexVsMom->SetName("gMeanResSlopeYVertexVsMom");
191 gMeanResSlopeYVertexVsMom->SetTitle("<#Delta_{slope_{Y}}> at vertex versus p;p (GeV/c);<#Delta_{slope_{Y}}>");
192 TGraphAsymmErrors* gSigmaResSlopeYVertexVsMom = new TGraphAsymmErrors(pNBins);
193 gSigmaResSlopeYVertexVsMom->SetName("gSigmaResSlopeYVertexVsMom");
194 gSigmaResSlopeYVertexVsMom->SetTitle("#sigma_{slope_{Y}} at vertex versus p;p (GeV/c);#sigma_{slope_{Y}}");
195
196 // angular resolution at first cluster
197 histoFile->mkdir("slopesAtFirstCluster","slopesAtFirstCluster");
198 histoFile->cd("slopesAtFirstCluster");
199
200 const Int_t deltaSlopeAtFirstClNBins = 500;
201 const Double_t deltaSlopeAtFirstClEdges[2] = {-0.01, 0.01};
202
203 TH1F *hResSlopeXFirstCluster = new TH1F("hResSlopeXFirstCluster","#Delta_{slope_{X}} at first cluster;#Delta_{slope_{X}}", deltaSlopeAtFirstClNBins, deltaSlopeAtFirstClEdges[0], deltaSlopeAtFirstClEdges[1]);
204 TH2D *hResSlopeXFirstClusterVsMom = new TH2D("hResSlopeXFirstClusterVsMom","#Delta_{slope_{X}} at first cluster versus p;p (GeV/c);#Delta_{slope_{X}}",2*pNBins,pEdges[0],pEdges[1], deltaSlopeAtFirstClNBins, deltaSlopeAtFirstClEdges[0], deltaSlopeAtFirstClEdges[1]);
205 TH1F *hResSlopeYFirstCluster = new TH1F("hResSlopeYFirstCluster","#Delta_{slope_{Y}} at first cluster;#Delta_{slope_{Y}}", deltaSlopeAtFirstClNBins, deltaSlopeAtFirstClEdges[0], deltaSlopeAtFirstClEdges[1]);
206 TH2D *hResSlopeYFirstClusterVsMom = new TH2D("hResSlopeYFirstClusterVsMom","#Delta_{slope_{Y}} at first cluster versus p;p (GeV/c);#Delta_{slope_{Y}}",2*pNBins,pEdges[0],pEdges[1], deltaSlopeAtFirstClNBins, deltaSlopeAtFirstClEdges[0], deltaSlopeAtFirstClEdges[1]);
207
208 TGraphAsymmErrors* gMeanResSlopeXFirstClusterVsMom = new TGraphAsymmErrors(pNBins);
209 gMeanResSlopeXFirstClusterVsMom->SetName("gMeanResSlopeXFirstClusterVsMom");
210 gMeanResSlopeXFirstClusterVsMom->SetTitle("<#Delta_{slope_{X}}> at first cluster versus p;p (GeV/c);<#Delta_{slope_{X}}>");
211 TGraphAsymmErrors* gSigmaResSlopeXFirstClusterVsMom = new TGraphAsymmErrors(pNBins);
212 gSigmaResSlopeXFirstClusterVsMom->SetName("gSigmaResSlopeXFirstClusterVsMom");
213 gSigmaResSlopeXFirstClusterVsMom->SetTitle("#sigma_{slope_{X}} at first cluster versus p;p (GeV/c);#sigma_{slope_{X}}");
214 TGraphAsymmErrors* gMeanResSlopeYFirstClusterVsMom = new TGraphAsymmErrors(pNBins);
215 gMeanResSlopeYFirstClusterVsMom->SetName("gMeanResSlopeYFirstClusterVsMom");
216 gMeanResSlopeYFirstClusterVsMom->SetTitle("<#Delta_{slope_{Y}}> at first cluster versus p;p (GeV/c);<#Delta_{slope_{Y}}>");
217 TGraphAsymmErrors* gSigmaResSlopeYFirstClusterVsMom = new TGraphAsymmErrors(pNBins);
218 gSigmaResSlopeYFirstClusterVsMom->SetName("gSigmaResSlopeYFirstClusterVsMom");
219 gSigmaResSlopeYFirstClusterVsMom->SetTitle("#sigma_{slope_{Y}} at first cluster versus p;p (GeV/c);#sigma_{slope_{Y}}");
220
221 // DCA resolution and MCS angular dispersion
222 histoFile->mkdir("DCA","DCA");
223 histoFile->cd("DCA");
224
225 const Int_t deltaPDCANBins = 500;
226 const Double_t deltaPDCAEdges[2] = {0., 1000.};
227 const Double_t deltaPMCSAngEdges[2] = {-0.5, 0.5};
228
229 TH1F *hPDCA = new TH1F("hPDCA","p #times DCA at vertex;p #times DCA (GeV #times cm)", deltaPDCANBins, deltaPDCAEdges[0], deltaPDCAEdges[1]);
230 TH2D *hPDCAVsMom_2_3_Deg = new TH2D("hPDCAVsMom_2_3_Deg","p #times DCA versus p for tracks within [2,3[ degrees at absorber end;p (GeV/c);p #times DCA (GeV #times cm)",2*pNBins,pEdges[0],pEdges[1], deltaPDCANBins, deltaPDCAEdges[0], deltaPDCAEdges[1]);
231 TH2D *hPDCAVsMom_3_10_Deg = new TH2D("hPDCAVsMom_3_10_Deg","p #times DCA versus p for tracks within [3,10[ degrees at absorber end;p (GeV/c);p #times DCA (GeV #times cm)",2*pNBins,pEdges[0],pEdges[1], deltaPDCANBins, deltaPDCAEdges[0], deltaPDCAEdges[1]);
232 TH2D *hPMCSAngVsMom_2_3_Deg = new TH2D("hPMCSAngVsMom_2_3_Deg","p #times #Delta#theta_{MCS} versus p for tracks within [2,3[ degrees at absorber end;p (GeV/c);p #times #Delta#theta_{MCS} (GeV)",2*pNBins,pEdges[0],pEdges[1], deltaPDCANBins, deltaPMCSAngEdges[0], deltaPMCSAngEdges[1]);
233 TH2D *hPMCSAngVsMom_3_10_Deg = new TH2D("hPMCSAngVsMom_3_10_Deg","p #times #Delta#theta_{MCS} versus p for tracks within [2,3[ degrees at absorber end;p (GeV/c);p #times #Delta#theta_{MCS} (GeV)",2*pNBins,pEdges[0],pEdges[1], deltaPDCANBins, deltaPMCSAngEdges[0], deltaPMCSAngEdges[1]);
234
235 TH2D *hPDCAVsPosAbsEnd_0_2_DegMC = new TH2D("hPDCAVsPosAbsEnd_0_2_DegMC","p #times DCA versus track position at absorber end for tracks with MC angle < 2 degrees;position (cm);p #times DCA (GeV #times cm)",1000,0.,100.,deltaPDCANBins, deltaPDCAEdges[0], deltaPDCAEdges[1]);
236 TH2D *hPDCAVsPosAbsEnd_2_3_DegMC = new TH2D("hPDCAVsPosAbsEnd_2_3_DegMC","p #times DCA}versus track position at absorber end for tracks with MC angle in [2,3[ degrees;position (cm);p #times DCA (GeV #times cm)",1000,0.,100.,deltaPDCANBins, deltaPDCAEdges[0], deltaPDCAEdges[1]);
237 TH2D *hPDCAVsPosAbsEnd_3_10_DegMC = new TH2D("hPDCAVsPosAbsEnd_3_10_DegMC","p #times DCA versus track position at absorber end for tracks with MC angle in [3,10[ degrees;position (cm);p #times DCA (GeV #times cm)",1000,0.,100.,deltaPDCANBins, deltaPDCAEdges[0], deltaPDCAEdges[1]);
238
239 TH2D *hPDCAVsAngle = new TH2D("hPDCAVsAngle","p #times DCA versus track position at absorber end converted to degrees;angle (Deg);p #times DCA (GeV #times cm)",10,0.,10.,deltaPDCANBins, deltaPDCAEdges[0], deltaPDCAEdges[1]);
240 TH2D *hPDCAVsMCAngle = new TH2D("hPDCAVsMCAngle","p #times DCA versus MC angle;MC angle (Deg);p #times DCA (GeV #times cm)",10,0.,10.,deltaPDCANBins, deltaPDCAEdges[0], deltaPDCAEdges[1]);
241
242 TGraphAsymmErrors* gSigmaPDCAVsMom_2_3_Deg = new TGraphAsymmErrors(pNBins);
243 gSigmaPDCAVsMom_2_3_Deg->SetName("gSigmaPDCAVsMom_2_3_Deg");
244 gSigmaPDCAVsMom_2_3_Deg->SetTitle("#sigma_{p #times DCA} versus p for tracks within [2,3[ degrees at absorber end;p (GeV/c);#sigma_{p #times DCA} (GeV #times cm)");
245 TGraphAsymmErrors* gSigmaPDCAVsMom_3_10_Deg = new TGraphAsymmErrors(pNBins);
246 gSigmaPDCAVsMom_3_10_Deg->SetName("gSigmaPDCAVsMom_3_10_Deg");
247 gSigmaPDCAVsMom_3_10_Deg->SetTitle("#sigma_{p #times DCA} versus p for tracks within [3,10[ degrees at absorber end;p (GeV/c);#sigma_{p #times DCA} (GeV #times cm)");
248 TGraphAsymmErrors* gMeanPMCSAngVsMom_2_3_Deg = new TGraphAsymmErrors(pNBins);
249 gMeanPMCSAngVsMom_2_3_Deg->SetName("gMeanPMCSAngVsMom_2_3_Deg");
250 gMeanPMCSAngVsMom_2_3_Deg->SetTitle("<p #times #Delta#theta_{MCS}> versus p for tracks within [2,3[ degrees at absorber end;p (GeV/c);<p #times #Delta#theta_{MCS}> (GeV)");
251 TGraphAsymmErrors* gSigmaPMCSAngVsMom_2_3_Deg = new TGraphAsymmErrors(pNBins);
252 gSigmaPMCSAngVsMom_2_3_Deg->SetName("gSigmaPMCSAngVsMom_2_3_Deg");
253 gSigmaPMCSAngVsMom_2_3_Deg->SetTitle("#sigma_{p #times #Delta#theta_{MCS}} versus p for tracks within [2,3[ degrees at absorber end;p (GeV/c);#sigma_{p #times #Delta#theta_{MCS}} (GeV)");
254 TGraphAsymmErrors* gMeanPMCSAngVsMom_3_10_Deg = new TGraphAsymmErrors(pNBins);
255 gMeanPMCSAngVsMom_3_10_Deg->SetName("gMeanPMCSAngVsMom_3_10_Deg");
256 gMeanPMCSAngVsMom_3_10_Deg->SetTitle("<p #times #Delta#theta_{MCS}> versus p for tracks within [3,10[ degrees at absorber end;p (GeV/c);<p #times #Delta#theta_{MCS}> (GeV)");
257 TGraphAsymmErrors* gSigmaPMCSAngVsMom_3_10_Deg = new TGraphAsymmErrors(pNBins);
258 gSigmaPMCSAngVsMom_3_10_Deg->SetName("gSigmaPMCSAngVsMom_3_10_Deg");
259 gSigmaPMCSAngVsMom_3_10_Deg->SetTitle("#sigma_{p #times #Delta#theta_{MCS}} versus p for tracks within [3,10[ degrees at absorber end;p (GeV/c);#sigma_{p #times #Delta#theta_{MCS}} (GeV)");
260
261 // eta resolution at vertex
262 histoFile->mkdir("etaAtVertex","etaAtVertex");
263 histoFile->cd("etaAtVertex");
264
265 const Int_t deltaEtaAtVtxNBins = 500;
266 const Double_t deltaEtaAtVtxEdges[2] = {-0.5, 0.5};
267
268 TH1F *hResEtaVertex = new TH1F("hResEtaVertex","#Delta_{eta} at vertex;#Delta_{eta}", deltaEtaAtVtxNBins, deltaEtaAtVtxEdges[0], deltaEtaAtVtxEdges[1]);
269 TH2D *hResEtaVertexVsMom = new TH2D("hResEtaVertexVsMom","#Delta_{eta} at vertex versus p;p (GeV/c);#Delta_{eta}",2*pNBins,pEdges[0],pEdges[1], deltaEtaAtVtxNBins, deltaEtaAtVtxEdges[0], deltaEtaAtVtxEdges[1]);
270
271 TH2D *hResEtaVertexVsPosAbsEnd_0_2_DegMC = new TH2D("hResEtaVertexVsPosAbsEnd_0_2_DegMC","#Delta_{eta} at vertex versus track position at absorber end for tracks with MC angle < 2 degrees;position (cm);#Delta_{eta}",1000,0.,100.,deltaEtaAtVtxNBins, deltaEtaAtVtxEdges[0], deltaEtaAtVtxEdges[1]);
272 TH2D *hResEtaVertexVsPosAbsEnd_2_3_DegMC = new TH2D("hResEtaVertexVsPosAbsEnd_2_3_DegMC","#Delta_{eta} at vertex versus track position at absorber end for tracks with MC angle in [2,3[ degrees;position (cm);#Delta_{eta}",1000,0.,100.,deltaEtaAtVtxNBins, deltaEtaAtVtxEdges[0], deltaEtaAtVtxEdges[1]);
273 TH2D *hResEtaVertexVsPosAbsEnd_3_10_DegMC = new TH2D("hResEtaVertexVsPosAbsEnd_3_10_DegMC","#Delta_{eta} at vertex versus track position at absorber end for tracks with MC angle in [3,10[ degrees;position (cm);#Delta_{eta}",1000,0.,100.,deltaEtaAtVtxNBins, deltaEtaAtVtxEdges[0], deltaEtaAtVtxEdges[1]);
274
275 TH2D *hResEtaVertexVsAngle = new TH2D("hResEtaVertexVsAngle","#Delta_{eta} at vertex versus track position at absorber end converted to degrees;angle (Deg);#Delta_{eta}",10,0.,10.,deltaEtaAtVtxNBins, deltaEtaAtVtxEdges[0], deltaEtaAtVtxEdges[1]);
276 TH2D *hResEtaVertexVsMCAngle = new TH2D("hResEtaVertexVsMCAngle","#Delta_{eta} at vertex versus MC angle;MC angle (Deg);#Delta_{eta}",10,0.,10.,deltaEtaAtVtxNBins, deltaEtaAtVtxEdges[0], deltaEtaAtVtxEdges[1]);
277
278 TGraphAsymmErrors* gMeanResEtaVertexVsMom = new TGraphAsymmErrors(pNBins);
279 gMeanResEtaVertexVsMom->SetName("gMeanResEtaVertexVsMom");
280 gMeanResEtaVertexVsMom->SetTitle("<#Delta_{eta}> at vertex versus p;p (GeV/c);<#Delta_{eta}>");
281 TGraphAsymmErrors* gSigmaResEtaVertexVsMom = new TGraphAsymmErrors(pNBins);
282 gSigmaResEtaVertexVsMom->SetName("gSigmaResEtaVertexVsMom");
283 gSigmaResEtaVertexVsMom->SetTitle("#sigma_{eta} at vertex versus p;p (GeV/c);#sigma_{eta}");
284
285 // phi resolution at vertex
286 histoFile->mkdir("phiAtVertex","phiAtVertex");
287 histoFile->cd("phiAtVertex");
288
289 const Int_t deltaPhiAtVtxNBins = 500;
290 const Double_t deltaPhiAtVtxEdges[2] = {-0.5, 0.5};
291
292 TH1F *hResPhiVertex = new TH1F("hResPhiVertex","#Delta_{phi} at vertex;#Delta_{phi}", deltaPhiAtVtxNBins, deltaPhiAtVtxEdges[0], deltaPhiAtVtxEdges[1]);
293 TH2D *hResPhiVertexVsMom = new TH2D("hResPhiVertexVsMom","#Delta_{phi} at vertex versus p;p (GeV/c);#Delta_{phi}",2*pNBins,pEdges[0],pEdges[1], deltaPhiAtVtxNBins, deltaPhiAtVtxEdges[0], deltaPhiAtVtxEdges[1]);
294
295 TH2D *hResPhiVertexVsPosAbsEnd_0_2_DegMC = new TH2D("hResPhiVertexVsPosAbsEnd_0_2_DegMC","#Delta_{phi} at vertex versus track position at absorber end for tracks with MC angle < 2 degrees;position (cm);#Delta_{phi}",1000,0.,100.,deltaPhiAtVtxNBins, deltaPhiAtVtxEdges[0], deltaPhiAtVtxEdges[1]);
296 TH2D *hResPhiVertexVsPosAbsEnd_2_3_DegMC = new TH2D("hResPhiVertexVsPosAbsEnd_2_3_DegMC","#Delta_{phi} at vertex versus track position at absorber end for tracks with MC angle in [2,3[ degrees;position (cm);#Delta_{phi}",1000,0.,100.,deltaPhiAtVtxNBins, deltaPhiAtVtxEdges[0], deltaPhiAtVtxEdges[1]);
297 TH2D *hResPhiVertexVsPosAbsEnd_3_10_DegMC = new TH2D("hResPhiVertexVsPosAbsEnd_3_10_DegMC","#Delta_{phi} at vertex versus track position at absorber end for tracks with MC angle in [3,10[ degrees;position (cm);#Delta_{phi}",1000,0.,100.,deltaPhiAtVtxNBins, deltaPhiAtVtxEdges[0], deltaPhiAtVtxEdges[1]);
298
299 TH2D *hResPhiVertexVsAngle = new TH2D("hResPhiVertexVsAngle","#Delta_{phi} at vertex versus track position at absorber end converted to degrees;angle (Deg);#Delta_{phi}",10,0.,10.,deltaPhiAtVtxNBins, deltaPhiAtVtxEdges[0], deltaPhiAtVtxEdges[1]);
300 TH2D *hResPhiVertexVsMCAngle = new TH2D("hResPhiVertexVsMCAngle","#Delta_{phi} at vertex versus MC angle;MC angle (Deg);#Delta_{phi}",10,0.,10.,deltaPhiAtVtxNBins, deltaPhiAtVtxEdges[0], deltaPhiAtVtxEdges[1]);
301
302 TGraphAsymmErrors* gMeanResPhiVertexVsMom = new TGraphAsymmErrors(pNBins);
303 gMeanResPhiVertexVsMom->SetName("gMeanResPhiVertexVsMom");
304 gMeanResPhiVertexVsMom->SetTitle("<#Delta_{phi}> at vertex versus p;p (GeV/c);<#Delta_{phi}>");
305 TGraphAsymmErrors* gSigmaResPhiVertexVsMom = new TGraphAsymmErrors(pNBins);
306 gSigmaResPhiVertexVsMom->SetName("gSigmaResPhiVertexVsMom");
307 gSigmaResPhiVertexVsMom->SetTitle("#sigma_{phi} at vertex versus p;p (GeV/c);#sigma_{phi}");
c687aa97 308
309 // cluster resolution
310 histoFile->mkdir("clusters","clusters");
311 histoFile->cd("clusters");
312
f202486b 313 TH1F* hResidualXInCh[AliMUONConstants::NTrackingCh()];
314 TH1F* hResidualYInCh[AliMUONConstants::NTrackingCh()];
315 for (Int_t i = 0; i < AliMUONConstants::NTrackingCh(); i++) {
316 hResidualXInCh[i] = new TH1F(Form("hResidualXInCh%d",i+1), Form("cluster-track residual-X distribution in chamber %d;#Delta_{X} (cm)",i+1), 1000, -1., 1.);
317 hResidualYInCh[i] = new TH1F(Form("hResidualYInCh%d",i+1), Form("cluster-track residual-Y distribution in chamber %d;#Delta_{Y} (cm)",i+1), 1000, -0.5, 0.5);
318 }
c687aa97 319
f202486b 320 TGraphErrors* gResidualXPerChMean = new TGraphErrors(AliMUONConstants::NTrackingCh());
321 gResidualXPerChMean->SetName("gResidualXPerChMean");
e1fe81b8 322 gResidualXPerChMean->SetTitle("cluster-trackRef residual-X per Ch: mean;chamber ID;<#Delta_{X}> (cm)");
f202486b 323 gResidualXPerChMean->SetMarkerStyle(kFullDotLarge);
324 TGraphErrors* gResidualYPerChMean = new TGraphErrors(AliMUONConstants::NTrackingCh());
325 gResidualYPerChMean->SetName("gResidualYPerChMean");
e1fe81b8 326 gResidualYPerChMean->SetTitle("cluster-trackRef residual-Y per Ch: mean;chamber ID;<#Delta_{Y}> (cm)");
f202486b 327 gResidualYPerChMean->SetMarkerStyle(kFullDotLarge);
328 TGraphErrors* gResidualXPerChSigma = new TGraphErrors(AliMUONConstants::NTrackingCh());
329 gResidualXPerChSigma->SetName("gResidualXPerChSigma");
e1fe81b8 330 gResidualXPerChSigma->SetTitle("cluster-trackRef residual-X per Ch: sigma;chamber ID;#sigma_{X} (cm)");
f202486b 331 gResidualXPerChSigma->SetMarkerStyle(kFullDotLarge);
332 TGraphErrors* gResidualYPerChSigma = new TGraphErrors(AliMUONConstants::NTrackingCh());
333 gResidualYPerChSigma->SetName("gResidualYPerChSigma");
e1fe81b8 334 gResidualYPerChSigma->SetTitle("cluster-trackRef residual-Y per Ch: sigma;chamber ID;#sigma_{Y} (cm)");
f202486b 335 gResidualYPerChSigma->SetMarkerStyle(kFullDotLarge);
9f164762 336
337 histoFile->mkdir("trigger");
338 histoFile->cd("trigger");
339 TH1F* hResidualTrigX11 = new TH1F("hResiudalTrigX11", "Residual X11", 100, -10., 10.);
340 TH1F* hResidualTrigY11 = new TH1F("hResiudalTrigY11", "Residual Y11", 100, -10., 10.);
341 TH1F* hResidualTrigSlopeY = new TH1F("hResiudalTrigSlopeY", "Residual Y slope", 100, -0.1, 0.1);
342 TH1F* hTriggerableMatchFailed = new TH1F("hTriggerableMatchFailed", "Triggerable multiplicity for events with no match", 15, -0.5, 14.5);
343
48217459 344
c687aa97 345 // ###################################### initialize ###################################### //
a99c3449 346 AliMUONRecoCheck rc(esdFileName, pathSim);
347
348 // load necessary data from OCDB
349 AliCDBManager::Instance()->SetDefaultStorage(ocdbPath);
350 AliCDBManager::Instance()->SetRun(rc.GetRunNumber());
c687aa97 351 if (!AliMUONCDB::LoadField()) return;
352 AliMUONTrackExtrap::SetField();
e1fe81b8 353 AliGeomManager::LoadGeometry();
354 if (!AliGeomManager::GetGeometry()) return;
a99c3449 355 AliMUONRecoParam* recoParam = AliMUONCDB::LoadRecoParam();
356 if (!recoParam) return;
e1fe81b8 357 AliMUONESDInterface::ResetTracker(recoParam);
a0bfad0e 358
f202486b 359 // get sigma cut from recoParam to associate clusters with TrackRefs in case the label are not used
a99c3449 360 Double_t sigmaCut = (recoParam->ImproveTracks()) ? recoParam->GetSigmaCutForImprovement() : recoParam->GetSigmaCutForTracking();
f202486b 361 // compute the mask of requested stations from recoParam
362 UInt_t requestedStationMask = 0;
363 for (Int_t i = 0; i < 5; i++) if (recoParam->RequestStation(i)) requestedStationMask |= ( 1 << i );
364 // get from recoParam whether a track need 2 chambers hit in the same station (4 or 5) or not to be reconstructible
365 Bool_t request2ChInSameSt45 = !recoParam->MakeMoreTrackCandidates();
48217459 366
367 Int_t nevents = rc.NumberOfEvents();
b8dc484b 368
edcc5b56 369 if (nevents < nEvent || nEvent < 0) nEvent = nevents;
b8dc484b 370
371 Int_t ievent;
372 Int_t nReconstructibleTracks = 0;
373 Int_t nReconstructedTracks = 0;
374 Int_t nReconstructibleTracksCheck = 0;
f202486b 375 AliMUONTrackParam *trackParam;
e1fe81b8 376 Double_t x1,y1,z1,slopex1,slopey1,pX1,pY1,pZ1,p1,pT1,eta1,phi1;
377 Double_t x2,y2,z2,slopex2,slopey2,pX2,pY2,pZ2,p2,pT2,eta2,phi2;
248ee365 378 Double_t dPhi;
e1fe81b8 379 Double_t xAbs,yAbs,dAbs,aAbs,aMCS,aMC;
380 Double_t xDCA,yDCA,dca,pU;
381 Double_t aMCSMoy = 0., aMCS2Moy = 0., dMCSMoy = 0., dMCS2Moy = 0., adMCSMoy = 0.;
382 Int_t nMCS = 0;
48217459 383
c687aa97 384 // ###################################### fill histograms ###################################### //
48217459 385 for (ievent=0; ievent<nEvent; ievent++)
386 {
c687aa97 387 if ((ievent+1)%100 == 0) cout<<"\rEvent processing... "<<ievent+1<<flush;
b8dc484b 388
a99c3449 389 AliMUONVTrackStore* trackStore = rc.ReconstructedTracks(ievent, kFALSE);
f202486b 390 AliMUONVTrackStore* trackRefStore = rc.ReconstructibleTracks(ievent, requestedStationMask, request2ChInSameSt45);
b8dc484b 391
48217459 392 hReconstructible->Fill(trackRefStore->GetSize());
393 hReco->Fill(trackStore->GetSize());
394
395 nReconstructibleTracks += trackRefStore->GetSize();
396 nReconstructedTracks += trackStore->GetSize();
9f164762 397
398 AliMUONVTriggerTrackStore* triggerTrackRefStore = rc.TriggerableTracks(ievent);
399 AliMUONVTriggerTrackStore* triggerTrackStore = rc.TriggeredTracks(ievent);
400
401 hTriggerable->Fill(triggerTrackRefStore->GetSize());
402 hTriggered->Fill(triggerTrackStore->GetSize());
403
404 // loop over trigger trackRef
405 TIter nextTrig(triggerTrackRefStore->CreateIterator());
406 AliMUONTriggerTrack* triggerTrackRef;
407 Int_t nTriggerMatches = 0;
408 while ( ( triggerTrackRef = static_cast<AliMUONTriggerTrack*>(nextTrig()) ) )
409 {
410
411 AliMUONTriggerTrack* triggerTrackMatched = 0x0;
412
413 // loop over trackReco and look for compatible track
414 TIter nextTrig2(triggerTrackStore->CreateIterator());
415 AliMUONTriggerTrack* triggerTrackReco;
416 while ( ( triggerTrackReco = static_cast<AliMUONTriggerTrack*>(nextTrig2()) ) )
417 {
418
419 // check if trackReco is compatible with trackRef
420 if (triggerTrackReco->Match(*triggerTrackRef, sigmaCut)) {
421 triggerTrackMatched = triggerTrackReco;
422 nTriggerMatches++;
423 break;
424 }
425 }
426
427 if (triggerTrackMatched) { // tracking requirements verified, track is found
428 hResidualTrigX11->Fill( triggerTrackMatched->GetX11() - triggerTrackRef->GetX11() );
429 hResidualTrigY11->Fill( triggerTrackMatched->GetY11() - triggerTrackRef->GetY11() );
430 hResidualTrigSlopeY->Fill( triggerTrackMatched->GetSlopeY() - triggerTrackRef->GetSlopeY() );
431 }
432 } // loop on trigger track ref
433
434 if ( nTriggerMatches != triggerTrackStore->GetSize() )
435 hTriggerableMatchFailed->Fill(triggerTrackRefStore->GetSize());
48217459 436
f202486b 437 // loop over trackRef
48217459 438 TIter next(trackRefStore->CreateIterator());
439 AliMUONTrack* trackRef;
48217459 440 while ( ( trackRef = static_cast<AliMUONTrack*>(next()) ) )
441 {
48217459 442
9f164762 443 hTrackRefID->Fill(trackRef->GetUniqueID());
f202486b 444
445 AliMUONTrack* trackMatched = 0x0;
446 Int_t nMatchClusters = 0;
447
448 // loop over trackReco and look for compatible track
48217459 449 TIter next2(trackStore->CreateIterator());
450 AliMUONTrack* trackReco;
48217459 451 while ( ( trackReco = static_cast<AliMUONTrack*>(next2()) ) )
452 {
f202486b 453
454 // check if trackReco is compatible with trackRef
f202486b 455 if (trackReco->Match(*trackRef, sigmaCut, nMatchClusters)) {
456 trackMatched = trackReco;
f202486b 457 break;
61fed964 458 }
f202486b 459
48217459 460 }
461
f202486b 462 if (trackMatched) { // tracking requirements verified, track is found
48217459 463 nReconstructibleTracksCheck++;
f202486b 464 hNClusterComp->Fill(nMatchClusters);
c687aa97 465
466 // compute track position at the end of the absorber
467 AliMUONTrackParam trackParamAtAbsEnd(*((AliMUONTrackParam*)trackMatched->GetTrackParamAtCluster()->First()));
468 AliMUONTrackExtrap::ExtrapToZ(&trackParamAtAbsEnd, AliMUONConstants::AbsZEnd());
469 xAbs = trackParamAtAbsEnd.GetNonBendingCoor();
470 yAbs = trackParamAtAbsEnd.GetBendingCoor();
471 dAbs = TMath::Sqrt(xAbs*xAbs + yAbs*yAbs);
472 aAbs = TMath::ATan(-dAbs/AliMUONConstants::AbsZEnd()) * TMath::RadToDeg();
e1fe81b8 473 pX2 = trackParamAtAbsEnd.Px();
474 pY2 = trackParamAtAbsEnd.Py();
475 pZ2 = trackParamAtAbsEnd.Pz();
476 pT2 = TMath::Sqrt(pX2*pX2 + pY2*pY2);
477 aMCS = TMath::ATan(-pT2/pZ2) * TMath::RadToDeg();
c687aa97 478
48217459 479 trackParam = trackRef->GetTrackParamAtVertex();
480 x1 = trackParam->GetNonBendingCoor();
481 y1 = trackParam->GetBendingCoor();
482 z1 = trackParam->GetZ();
e1fe81b8 483 slopex1 = trackParam->GetNonBendingSlope();
484 slopey1 = trackParam->GetBendingSlope();
48217459 485 pX1 = trackParam->Px();
486 pY1 = trackParam->Py();
487 pZ1 = trackParam->Pz();
488 p1 = trackParam->P();
f202486b 489 pT1 = TMath::Sqrt(pX1*pX1 + pY1*pY1);
c687aa97 490 aMC = TMath::ATan(-pT1/pZ1) * TMath::RadToDeg();
e1fe81b8 491 eta1 = TMath::Log(TMath::Tan(0.5*TMath::ATan(-pT1/pZ1)));
492 phi1 = TMath::Pi()+TMath::ATan2(-pY1, -pX1);
c687aa97 493
f202486b 494 trackParam = trackMatched->GetTrackParamAtVertex();
48217459 495 x2 = trackParam->GetNonBendingCoor();
496 y2 = trackParam->GetBendingCoor();
497 z2 = trackParam->GetZ();
e1fe81b8 498 slopex2 = trackParam->GetNonBendingSlope();
499 slopey2 = trackParam->GetBendingSlope();
48217459 500 pX2 = trackParam->Px();
501 pY2 = trackParam->Py();
502 pZ2 = trackParam->Pz();
503 p2 = trackParam->P();
f202486b 504 pT2 = TMath::Sqrt(pX2*pX2 + pY2*pY2);
e1fe81b8 505 eta2 = TMath::Log(TMath::Tan(0.5*TMath::ATan(-pT2/pZ2)));
506 phi2 = TMath::Pi()+TMath::ATan2(-pY2, -pX2);
48217459 507
248ee365 508 dPhi = phi2-phi1;
509 if (dPhi < -TMath::Pi()) dPhi += 2.*TMath::Pi();
510 else if (dPhi > TMath::Pi()) dPhi -= 2.*TMath::Pi();
511
e1fe81b8 512 AliMUONTrackParam trackParamAtDCA(*((AliMUONTrackParam*) trackMatched->GetTrackParamAtCluster()->First()));
513 pU = trackParamAtDCA.P();
514 AliMUONTrackExtrap::ExtrapToVertexWithoutBranson(&trackParamAtDCA, z2);
515 xDCA = trackParamAtDCA.GetNonBendingCoor();
516 yDCA = trackParamAtDCA.GetBendingCoor();
517 dca = TMath::Sqrt(xDCA*xDCA + yDCA*yDCA);
518
48217459 519 hResMomVertex->Fill(p2-p1);
e1fe81b8 520 hResSlopeXVertex->Fill(slopex2-slopex1);
521 hResSlopeYVertex->Fill(slopey2-slopey1);
522 hPDCA->Fill(0.5*(p2+pU)*dca);
523 hResEtaVertex->Fill(eta2-eta1);
248ee365 524 hResPhiVertex->Fill(dPhi);
e1fe81b8 525 if (aMC >= aAbsLimits[0] && aMC <= aAbsLimits[1]) {
526 hResMomVertexVsMom->Fill(p1,p2-p1);
527 hResSlopeXVertexVsMom->Fill(p1,slopex2-slopex1);
528 hResSlopeYVertexVsMom->Fill(p1,slopey2-slopey1);
529 hResEtaVertexVsMom->Fill(p1,eta2-eta1);
248ee365 530 hResPhiVertexVsMom->Fill(p1,dPhi);
e1fe81b8 531 }
c687aa97 532 hResMomVertexVsAngleVsMom->Fill(p1,aAbs,p2-p1);
e1fe81b8 533 if (aAbs > 2. && aAbs < 3.) {
534 hResMomVertexVsMom_2_3_Deg->Fill(p1,p2-p1);
535 hPDCAVsMom_2_3_Deg->Fill(p1,0.5*(p2+pU)*dca);
536 hPMCSAngVsMom_2_3_Deg->Fill(p1,0.5*(p2+pU)*(aMCS-aMC)*TMath::DegToRad());
537 }
538 else if (aAbs >= 3. && aAbs < 10.) {
539 hResMomVertexVsMom_3_10_Deg->Fill(p1,p2-p1);
540 hPDCAVsMom_3_10_Deg->Fill(p1,0.5*(p2+pU)*dca);
541 hPMCSAngVsMom_3_10_Deg->Fill(p1,0.5*(p2+pU)*(aMCS-aMC)*TMath::DegToRad());
542 aMCSMoy += 0.5*(p2+pU)*(aMCS-aMC)*TMath::DegToRad();
543 aMCS2Moy += (0.5*(p2+pU)*(aMCS-aMC)*TMath::DegToRad()) * (0.5*(p2+pU)*(aMCS-aMC)*TMath::DegToRad());
544 dMCSMoy += 0.5*(p2+pU)*(dAbs-pT1/pZ1*AliMUONConstants::AbsZEnd());
545 dMCS2Moy += (0.5*(p2+pU)*(dAbs-pT1/pZ1*AliMUONConstants::AbsZEnd())) * (0.5*(p2+pU)*(dAbs-pT1/pZ1*AliMUONConstants::AbsZEnd()));
546 adMCSMoy += (0.5*(p2+pU)*(aMCS-aMC)*TMath::DegToRad()) * (0.5*(p2+pU)*(dAbs-pT1/pZ1*AliMUONConstants::AbsZEnd()));
547 nMCS++;
548 }
c687aa97 549 if (aMC < 2.) {
550 hResMomVertexVsMom_0_2_DegMC->Fill(p1,p2-p1);
551 hResMomVertexVsPosAbsEnd_0_2_DegMC->Fill(dAbs,p2-p1);
e1fe81b8 552 hResSlopeXVertexVsPosAbsEnd_0_2_DegMC->Fill(dAbs,slopex2-slopex1);
553 hResSlopeYVertexVsPosAbsEnd_0_2_DegMC->Fill(dAbs,slopey2-slopey1);
554 hPDCAVsPosAbsEnd_0_2_DegMC->Fill(dAbs,0.5*(p2+pU)*dca);
555 hResEtaVertexVsPosAbsEnd_0_2_DegMC->Fill(dAbs,eta2-eta1);
248ee365 556 hResPhiVertexVsPosAbsEnd_0_2_DegMC->Fill(dAbs,dPhi);
e1fe81b8 557 }
558 else if (aMC >= 2. && aMC < 3) {
559 hResMomVertexVsPosAbsEnd_2_3_DegMC->Fill(dAbs,p2-p1);
560 hResSlopeXVertexVsPosAbsEnd_2_3_DegMC->Fill(dAbs,slopex2-slopex1);
561 hResSlopeYVertexVsPosAbsEnd_2_3_DegMC->Fill(dAbs,slopey2-slopey1);
562 hPDCAVsPosAbsEnd_2_3_DegMC->Fill(dAbs,0.5*(p2+pU)*dca);
563 hResEtaVertexVsPosAbsEnd_2_3_DegMC->Fill(dAbs,eta2-eta1);
248ee365 564 hResPhiVertexVsPosAbsEnd_2_3_DegMC->Fill(dAbs,dPhi);
e1fe81b8 565 }
566 else if (aMC >= 3. && aMC < 10.) {
567 hResMomVertexVsPosAbsEnd_3_10_DegMC->Fill(dAbs,p2-p1);
568 hResSlopeXVertexVsPosAbsEnd_3_10_DegMC->Fill(dAbs,slopex2-slopex1);
569 hResSlopeYVertexVsPosAbsEnd_3_10_DegMC->Fill(dAbs,slopey2-slopey1);
570 hPDCAVsPosAbsEnd_3_10_DegMC->Fill(dAbs,0.5*(p2+pU)*dca);
571 hResEtaVertexVsPosAbsEnd_3_10_DegMC->Fill(dAbs,eta2-eta1);
248ee365 572 hResPhiVertexVsPosAbsEnd_3_10_DegMC->Fill(dAbs,dPhi);
c687aa97 573 }
c687aa97 574 hResMomVertexVsAngle->Fill(aAbs,p2-p1);
e1fe81b8 575 hResSlopeXVertexVsAngle->Fill(aAbs,slopex2-slopex1);
576 hResSlopeYVertexVsAngle->Fill(aAbs,slopey2-slopey1);
577 hPDCAVsAngle->Fill(aAbs,0.5*(p2+pU)*dca);
578 hResEtaVertexVsAngle->Fill(aAbs,eta2-eta1);
248ee365 579 hResPhiVertexVsAngle->Fill(aAbs,dPhi);
c687aa97 580 hResMomVertexVsMCAngle->Fill(aMC,p2-p1);
e1fe81b8 581 hResSlopeXVertexVsMCAngle->Fill(aMC,slopex2-slopex1);
582 hResSlopeYVertexVsMCAngle->Fill(aMC,slopey2-slopey1);
583 hPDCAVsMCAngle->Fill(aMC,0.5*(p2+pU)*dca);
584 hResEtaVertexVsMCAngle->Fill(aMC,eta2-eta1);
248ee365 585 hResPhiVertexVsMCAngle->Fill(aMC,dPhi);
f202486b 586
96ebe67e 587 trackParam = (AliMUONTrackParam*) trackRef->GetTrackParamAtCluster()->First();
48217459 588 x1 = trackParam->GetNonBendingCoor();
589 y1 = trackParam->GetBendingCoor();
590 z1 = trackParam->GetZ();
e1fe81b8 591 slopex1 = trackParam->GetNonBendingSlope();
592 slopey1 = trackParam->GetBendingSlope();
48217459 593 pX1 = trackParam->Px();
594 pY1 = trackParam->Py();
595 pZ1 = trackParam->Pz();
596 p1 = trackParam->P();
f202486b 597 pT1 = TMath::Sqrt(pX1*pX1 + pY1*pY1);
598
f202486b 599 trackParam = (AliMUONTrackParam*) trackMatched->GetTrackParamAtCluster()->First();
48217459 600 x2 = trackParam->GetNonBendingCoor();
601 y2 = trackParam->GetBendingCoor();
602 z2 = trackParam->GetZ();
e1fe81b8 603 slopex2 = trackParam->GetNonBendingSlope();
604 slopey2 = trackParam->GetBendingSlope();
48217459 605 pX2 = trackParam->Px();
606 pY2 = trackParam->Py();
607 pZ2 = trackParam->Pz();
608 p2 = trackParam->P();
f202486b 609 pT2 = TMath::Sqrt(pX2*pX2 + pY2*pY2);
48217459 610
96ebe67e 611 hResMomFirstCluster->Fill(p2-p1);
f202486b 612 hResMomFirstClusterVsMom->Fill(p1,p2-p1);
613
e1fe81b8 614 hResSlopeXFirstCluster->Fill(slopex2-slopex1);
615 hResSlopeYFirstCluster->Fill(slopey2-slopey1);
616 hResSlopeXFirstClusterVsMom->Fill(p1,slopex2-slopex1);
617 hResSlopeYFirstClusterVsMom->Fill(p1,slopey2-slopey1);
618
f202486b 619 // Fill residuals
620 // Loop over clusters of first track
621 AliMUONTrackParam* trackParamAtCluster1 = (AliMUONTrackParam*) trackMatched->GetTrackParamAtCluster()->First();
622 while (trackParamAtCluster1) {
623 AliMUONVCluster* cluster1 = trackParamAtCluster1->GetClusterPtr();
624 AliMUONTrackParam* trackParamAtCluster2 = (AliMUONTrackParam*) trackRef->GetTrackParamAtCluster()->First();
625 while (trackParamAtCluster2) {
626 AliMUONVCluster* cluster2 = trackParamAtCluster2->GetClusterPtr();
627 if (cluster1->GetDetElemId() == cluster2->GetDetElemId()) {
628 hResidualXInCh[cluster1->GetChamberId()]->Fill(cluster1->GetX() - cluster2->GetX());
629 hResidualYInCh[cluster1->GetChamberId()]->Fill(cluster1->GetY() - cluster2->GetY());
630 break;
631 }
632 trackParamAtCluster2 = (AliMUONTrackParam*) trackRef->GetTrackParamAtCluster()->After(trackParamAtCluster2);
633 }
634 trackParamAtCluster1 = (AliMUONTrackParam*) trackMatched->GetTrackParamAtCluster()->After(trackParamAtCluster1);
635 }
636
b8dc484b 637 }
f202486b 638
b8dc484b 639 } // end loop track ref.
b8dc484b 640
48217459 641 } // end loop on event
c687aa97 642 cout<<"\rEvent processing... "<<nevents<<" done"<<endl;
48217459 643
c687aa97 644 // ###################################### compute stuff ###################################### //
e1fe81b8 645 cout<<"\nWhen not specified, resolution at vertex is computed for ";
646 if (absorberRegion == 1) cout<<"tracks in the absorber region [2,3] deg."<<endl;
647 else if (absorberRegion == 2) cout<<"tracks in the absorber region [3,10] deg."<<endl;
648 else cout<<"all tracks"<<endl;
649
c687aa97 650 // compute momentum resolution at vertex versus p
e1fe81b8 651 TF1 *f2 = new TF1("f2",langaufun,deltaPAtVtxEdges[0],deltaPAtVtxEdges[1],4);
c687aa97 652 Int_t rebinFactorX = TMath::Max(hResMomVertexVsMom->GetNbinsX()/pNBins, 1);
653 for (Int_t i = rebinFactorX; i <= hResMomVertexVsMom->GetNbinsX(); i+=rebinFactorX) {
654 cout<<"\rFitting momentum residuals at vertex... "<<i/rebinFactorX<<"/"<<pNBins<<flush;
655 TH1D *tmp = hResMomVertexVsMom->ProjectionY("tmp",i-rebinFactorX+1,i,"e");
c687aa97 656 f2->SetParameters(0.2,0.,(Double_t)tmp->GetEntries(),1.);
657 tmp->Fit("f2","WWNQ");
658 Double_t fwhm = f2->GetParameter(0);
659 Double_t sigma = f2->GetParameter(3);
660 Double_t sigmaP = TMath::Sqrt(sigma*sigma + fwhm*fwhm/(8.*log(2.)));
661 Int_t rebin = TMath::Max(Int_t(0.5*sigmaP/tmp->GetBinWidth(1)),1);
662 while (deltaPAtVtxNBins%rebin!=0) rebin--;
663 tmp->Rebin(rebin);
664 tmp->Fit("f2","NQ");
665 fwhm = f2->GetParameter(0);
666 sigma = f2->GetParameter(3);
667 sigmaP = TMath::Sqrt(sigma*sigma + fwhm*fwhm/(8.*log(2.)));
668 Double_t fwhmErr = f2->GetParError(0);
669 Double_t sigmaErr = f2->GetParError(3);
670 Double_t sigmaPErr = TMath::Sqrt(sigma*sigma*sigmaErr*sigmaErr + fwhm*fwhm*fwhmErr*fwhmErr/(64.*log(2.)*log(2.))) / sigmaP;
e1fe81b8 671 hResMomVertexVsMom->GetXaxis()->SetRange(i-rebinFactorX+1,i);
248ee365 672 Double_t p = (tmp->GetEntries() > 0) ? hResMomVertexVsMom->GetMean() : 0.5 * (hResMomVertexVsMom->GetBinLowEdge(i-rebinFactorX+1) + hResMomVertexVsMom->GetBinLowEdge(i+1));
e1fe81b8 673 hResMomVertexVsMom->GetXaxis()->SetRange();
674 Double_t pErr[2] = {p-hResMomVertexVsMom->GetBinLowEdge(i-rebinFactorX+1), hResMomVertexVsMom->GetBinLowEdge(i+1)-p};
675 gMeanResMomVertexVsMom->SetPoint(i/rebinFactorX-1, p, tmp->GetMean());
676 gMeanResMomVertexVsMom->SetPointError(i/rebinFactorX-1, pErr[0], pErr[1], tmp->GetMeanError(), tmp->GetMeanError());
677 gMostProbResMomVertexVsMom->SetPoint(i/rebinFactorX-1, p, -f2->GetParameter(1));
678 gMostProbResMomVertexVsMom->SetPointError(i/rebinFactorX-1, pErr[0], pErr[1], f2->GetParError(1), f2->GetParError(1));
679 gSigmaResMomVertexVsMom->SetPoint(i/rebinFactorX-1, p, 100.*sigmaP/p);
680 gSigmaResMomVertexVsMom->SetPointError(i/rebinFactorX-1, pErr[0], pErr[1], 100.*sigmaPErr/p, 100.*sigmaPErr/p);
f202486b 681 delete tmp;
682 }
c687aa97 683 cout<<"\rFitting momentum residuals at vertex... "<<pNBins<<"/"<<pNBins<<endl;
684
e1fe81b8 685 // compute momentum relative resolution at first cluster versus p
686 FitGausResVsMom(hResMomFirstClusterVsMom, pNBins, 0., 1., "momentum residuals at first cluster", gMeanResMomFirstClusterVsMom, gSigmaResMomFirstClusterVsMom);
c687aa97 687 rebinFactorX = TMath::Max(hResMomFirstClusterVsMom->GetNbinsX()/pNBins, 1);
688 for (Int_t i = rebinFactorX; i <= hResMomFirstClusterVsMom->GetNbinsX(); i+=rebinFactorX) {
e1fe81b8 689 Double_t x,y;
690 gSigmaResMomFirstClusterVsMom->GetPoint(i/rebinFactorX-1, x, y);
691 gSigmaResMomFirstClusterVsMom->SetPoint(i/rebinFactorX-1, x, 100.*y/x);
692 gSigmaResMomFirstClusterVsMom->SetPointEYlow(i/rebinFactorX-1, 100.*gSigmaResMomFirstClusterVsMom->GetErrorYlow(i/rebinFactorX-1)/x);
693 gSigmaResMomFirstClusterVsMom->SetPointEYhigh(i/rebinFactorX-1, 100.*gSigmaResMomFirstClusterVsMom->GetErrorYhigh(i/rebinFactorX-1)/x);
f202486b 694 }
695
e1fe81b8 696 // compute slopeX resolution at vertex versus p
697 FitGausResVsMom(hResSlopeXVertexVsMom, pNBins, 0., 2.e-3, "slopeX residuals at vertex", gMeanResSlopeXVertexVsMom, gSigmaResSlopeXVertexVsMom);
698
699 // compute slopeY resolution at vertex versus p
700 FitGausResVsMom(hResSlopeYVertexVsMom, pNBins, 0., 2.e-3, "slopeY residuals at vertex", gMeanResSlopeYVertexVsMom, gSigmaResSlopeYVertexVsMom);
701
702 // compute slopeX resolution at first cluster versus p
703 FitGausResVsMom(hResSlopeXFirstClusterVsMom, pNBins, 0., 3.e-4, "slopeX residuals at first cluster", gMeanResSlopeXFirstClusterVsMom, gSigmaResSlopeXFirstClusterVsMom);
704
705 // compute slopeY resolution at first cluster versus p
706 FitGausResVsMom(hResSlopeYFirstClusterVsMom, pNBins, 0., 2.e-4, "slopeY residuals at first cluster", gMeanResSlopeYFirstClusterVsMom, gSigmaResSlopeYFirstClusterVsMom);
707
708 // compute p*DCA resolution in the region [2,3] deg at absorber end
709 FitPDCAVsMom(hPDCAVsMom_2_3_Deg, pNBins, "p*DCA (tracks in [2,3] deg.)", gSigmaPDCAVsMom_2_3_Deg);
710
711 // compute p*DCA resolution in the region [3,10] deg at absorber end
712 FitPDCAVsMom(hPDCAVsMom_3_10_Deg, pNBins, "p*DCA (tracks in [3,10] deg.)", gSigmaPDCAVsMom_3_10_Deg);
713
714 // compute MCS angular dispersion in the region [2,3] deg at absorber end
715 FitGausResVsMom(hPMCSAngVsMom_2_3_Deg, pNBins, 0., 2.e-3, "p*MCSAngle (tracks in [2,3] deg.)", gMeanPMCSAngVsMom_2_3_Deg, gSigmaPMCSAngVsMom_2_3_Deg);
716
717 // compute MCS angular dispersion in the region [3,10] deg at absorber end
718 FitGausResVsMom(hPMCSAngVsMom_3_10_Deg, pNBins, 0., 2.e-3, "p*MCSAngle (tracks in [3,10] deg.)", gMeanPMCSAngVsMom_3_10_Deg, gSigmaPMCSAngVsMom_3_10_Deg);
719
720 // compute eta resolution at vertex versus p
721 FitGausResVsMom(hResEtaVertexVsMom, pNBins, 0., 0.1, "eta residuals at vertex", gMeanResEtaVertexVsMom, gSigmaResEtaVertexVsMom);
722
723 // compute phi resolution at vertex versus p
724 FitGausResVsMom(hResPhiVertexVsMom, pNBins, 0., 0.01, "phi residuals at vertex", gMeanResPhiVertexVsMom, gSigmaResPhiVertexVsMom);
725
726 // compute cluster-track residual mean and dispersion
f202486b 727 for (Int_t i = 0; i < AliMUONConstants::NTrackingCh(); i++) {
728 hResidualXInCh[i]->GetXaxis()->SetRangeUser(-3.*hResidualXInCh[i]->GetRMS(), 3.*hResidualXInCh[i]->GetRMS());
729 gResidualXPerChMean->SetPoint(i, i+1, hResidualXInCh[i]->GetMean());
730 gResidualXPerChMean->SetPointError(i, 0., hResidualXInCh[i]->GetMeanError());
731 gResidualXPerChSigma->SetPoint(i, i+1, hResidualXInCh[i]->GetRMS());
732 gResidualXPerChSigma->SetPointError(i, 0., hResidualXInCh[i]->GetRMSError());
733 hResidualXInCh[i]->GetXaxis()->SetRange(0,0);
734 hResidualYInCh[i]->GetXaxis()->SetRangeUser(-3.*hResidualYInCh[i]->GetRMS(), 3.*hResidualYInCh[i]->GetRMS());
735 gResidualYPerChMean->SetPoint(i, i+1, hResidualYInCh[i]->GetMean());
736 gResidualYPerChMean->SetPointError(i, 0., hResidualYInCh[i]->GetMeanError());
737 gResidualYPerChSigma->SetPoint(i, i+1, hResidualYInCh[i]->GetRMS());
738 gResidualYPerChSigma->SetPointError(i, 0., hResidualYInCh[i]->GetRMSError());
739 hResidualYInCh[i]->GetXaxis()->SetRange(0,0);
740 }
741
c687aa97 742 // ###################################### display histograms ###################################### //
e1fe81b8 743 // diplay momentum residuals
744 TCanvas* cResMom = DrawVsAng("cResMom", "momentum residual at vertex in 3 angular regions", hResMomVertex, hResMomVertexVsAngle);
745 TCanvas* cResMomMC = DrawVsAng("cResMomMC", "momentum residual at vertex in 3 MC angular regions", hResMomVertex, hResMomVertexVsMCAngle);
746 TCanvas* cResMomVsPos = DrawVsPos("cResMomVsPos", "momentum residual at vertex versus position at absorber end in 3 MC angular regions",
747 hResMomVertexVsPosAbsEnd_0_2_DegMC, hResMomVertexVsPosAbsEnd_2_3_DegMC, hResMomVertexVsPosAbsEnd_3_10_DegMC);
748 TCanvas* cResMom_2_3_Deg = DrawResMomVsMom("cResMom_2_3_Deg", "momentum residual for tracks between 2 and 3 degrees",
749 hResMomVertexVsMom_2_3_Deg, 10, f2, "momentum residuals at vertex (tracks in [2,3] deg.)");
750 TCanvas* cResMom_3_10_Deg = DrawResMomVsMom("cResMom_3_10_Deg", "momentum residual for tracks between 3 and 10 degrees",
751 hResMomVertexVsMom_3_10_Deg, 10, f2, "momentum residuals at vertex (tracks in [3,10] deg.)");
752 TCanvas* cResMom_0_2_DegMC = DrawResMomVsMom("cResMom_0_2_DegMC", "momentum residuals for tracks with MC angle < 2 degrees", hResMomVertexVsMom_0_2_DegMC, 5);
753
754 // diplay slopeX residuals
755 TCanvas* cResSlopeX = DrawVsAng("cResSlopeX", "slope_{X} residual at vertex in 3 angular regions", hResSlopeXVertex, hResSlopeXVertexVsAngle);
756 TCanvas* cResSlopeXMC = DrawVsAng("cResSlopeXMC", "slope_{X} residual at vertex in 3 MC angular regions", hResSlopeXVertex, hResSlopeXVertexVsMCAngle);
757 TCanvas* cResSlopeXVsPos = DrawVsPos("cResSlopeXVsPos", "slope_{X} residual at vertex versus position at absorber end in 3 MC angular regions",
758 hResSlopeXVertexVsPosAbsEnd_0_2_DegMC, hResSlopeXVertexVsPosAbsEnd_2_3_DegMC, hResSlopeXVertexVsPosAbsEnd_3_10_DegMC);
759
760 // diplay slopeY residuals
761 TCanvas* cResSlopeY = DrawVsAng("cResSlopeY", "slope_{Y} residual at vertex in 3 angular regions", hResSlopeYVertex, hResSlopeYVertexVsAngle);
762 TCanvas* cResSlopeYMC = DrawVsAng("cResSlopeYMC", "slope_{Y} residual at vertex in 3 MC angular regions", hResSlopeYVertex, hResSlopeYVertexVsMCAngle);
763 TCanvas* cResSlopeYVsPos = DrawVsPos("cResSlopeYVsPos", "slope_{Y} residual at vertex versus position at absorber end in 3 MC angular regions",
764 hResSlopeYVertexVsPosAbsEnd_0_2_DegMC, hResSlopeYVertexVsPosAbsEnd_2_3_DegMC, hResSlopeYVertexVsPosAbsEnd_3_10_DegMC);
765
766 // diplay P*DCA
767 TCanvas* cPDCA = DrawVsAng("cPDCA", "p #times DCA in 3 angular regions", hPDCA, hPDCAVsAngle);
768 TCanvas* cPDCAMC = DrawVsAng("cPDCAMC", "p #times DCA in 3 MC angular regions", hPDCA, hPDCAVsMCAngle);
769 TCanvas* cPDCAVsPos = DrawVsPos("cPDCAVsPos", "p #times DCA versus position at absorber end in 3 MC angular regions",
770 hPDCAVsPosAbsEnd_0_2_DegMC, hPDCAVsPosAbsEnd_2_3_DegMC, hPDCAVsPosAbsEnd_3_10_DegMC);
771
772 // diplay eta residuals
773 TCanvas* cResEta = DrawVsAng("cResEta", "eta residual at vertex in 3 angular regions", hResEtaVertex, hResEtaVertexVsAngle);
774 TCanvas* cResEtaMC = DrawVsAng("cResEtaMC", "eta residual at vertex in 3 MC angular regions", hResEtaVertex, hResEtaVertexVsMCAngle);
775 TCanvas* cResEtaVsPos = DrawVsPos("cResEtaVsPos", "eta residual at vertex versus position at absorber end in 3 MC angular regions",
776 hResEtaVertexVsPosAbsEnd_0_2_DegMC, hResEtaVertexVsPosAbsEnd_2_3_DegMC, hResEtaVertexVsPosAbsEnd_3_10_DegMC);
777
778 // diplay phi residuals
779 TCanvas* cResPhi = DrawVsAng("cResPhi", "phi residual at vertex in 3 angular regions", hResPhiVertex, hResPhiVertexVsAngle);
780 TCanvas* cResPhiMC = DrawVsAng("cResPhiMC", "phi residual at vertex in 3 MC angular regions", hResPhiVertex, hResPhiVertexVsMCAngle);
781 TCanvas* cResPhiVsPos = DrawVsPos("cResPhiVsPos", "phi residual at vertex versus position at absorber end in 3 MC angular regions",
782 hResPhiVertexVsPosAbsEnd_0_2_DegMC, hResPhiVertexVsPosAbsEnd_2_3_DegMC, hResPhiVertexVsPosAbsEnd_3_10_DegMC);
c687aa97 783
784 // ###################################### save histogram ###################################### //
b8dc484b 785 histoFile->Write();
c687aa97 786
787 histoFile->cd("momentumAtVertex");
788 gMeanResMomVertexVsMom->Write();
789 gMostProbResMomVertexVsMom->Write();
790 gSigmaResMomVertexVsMom->Write();
e1fe81b8 791 cResMom->Write();
792 cResMomMC->Write();
793 cResMomVsPos->Write();
794 cResMom_2_3_Deg->Write();
795 cResMom_3_10_Deg->Write();
796 cResMom_0_2_DegMC->Write();
797
798 histoFile->cd("slopesAtVertex");
799 gMeanResSlopeXVertexVsMom->Write();
800 gMeanResSlopeYVertexVsMom->Write();
801 gSigmaResSlopeXVertexVsMom->Write();
802 gSigmaResSlopeYVertexVsMom->Write();
803 cResSlopeX->Write();
804 cResSlopeY->Write();
805 cResSlopeXMC->Write();
806 cResSlopeYMC->Write();
807 cResSlopeXVsPos->Write();
808 cResSlopeYVsPos->Write();
809
810 histoFile->cd("DCA");
811 gSigmaPDCAVsMom_2_3_Deg->Write();
812 gSigmaPDCAVsMom_3_10_Deg->Write();
813 gMeanPMCSAngVsMom_2_3_Deg->Write();
814 gSigmaPMCSAngVsMom_2_3_Deg->Write();
815 gMeanPMCSAngVsMom_3_10_Deg->Write();
816 gSigmaPMCSAngVsMom_3_10_Deg->Write();
817 cPDCA->Write();
818 cPDCAMC->Write();
819 cPDCAVsPos->Write();
820
821 histoFile->cd("etaAtVertex");
822 gMeanResEtaVertexVsMom->Write();
823 gSigmaResEtaVertexVsMom->Write();
824 cResEta->Write();
825 cResEtaMC->Write();
826 cResEtaVsPos->Write();
827
828 histoFile->cd("phiAtVertex");
829 gMeanResPhiVertexVsMom->Write();
830 gSigmaResPhiVertexVsMom->Write();
831 cResPhi->Write();
832 cResPhiMC->Write();
833 cResPhiVsPos->Write();
c687aa97 834
835 histoFile->cd("momentumAtFirstCluster");
836 gMeanResMomFirstClusterVsMom->Write();
837 gSigmaResMomFirstClusterVsMom->Write();
838
e1fe81b8 839 histoFile->cd("slopesAtFirstCluster");
840 gMeanResSlopeXFirstClusterVsMom->Write();
841 gMeanResSlopeYFirstClusterVsMom->Write();
842 gSigmaResSlopeXFirstClusterVsMom->Write();
843 gSigmaResSlopeYFirstClusterVsMom->Write();
844
c687aa97 845 histoFile->cd("clusters");
f202486b 846 gResidualXPerChMean->Write();
847 gResidualXPerChSigma->Write();
848 gResidualYPerChMean->Write();
849 gResidualYPerChSigma->Write();
c687aa97 850
b8dc484b 851 histoFile->Close();
c687aa97 852
e1fe81b8 853 // ###################################### clean memory ###################################### //
854 delete cResMom;
855 delete cResMomMC;
856 delete cResMomVsPos;
857 delete cResMom_2_3_Deg;
858 delete cResMom_3_10_Deg;
859 delete cResMom_0_2_DegMC;
860 delete cResSlopeX;
861 delete cResSlopeY;
862 delete cResSlopeXMC;
863 delete cResSlopeYMC;
864 delete cResSlopeXVsPos;
865 delete cResSlopeYVsPos;
866 delete cPDCA;
867 delete cPDCAMC;
868 delete cPDCAVsPos;
869 delete cResEta;
870 delete cResEtaMC;
871 delete cResEtaVsPos;
872 delete cResPhi;
873 delete cResPhiMC;
874 delete cResPhiVsPos;
c687aa97 875
e1fe81b8 876 // ###################################### print statistics ###################################### //
877 printf("\n");
878 printf("nb of reconstructible tracks: %d \n", nReconstructibleTracks);
879 printf("nb of reconstructed tracks: %d \n", nReconstructedTracks);
880 printf("nb of reconstructible tracks which are reconstructed: %d \n", nReconstructibleTracksCheck);
881
882 aMCSMoy /= (Double_t) nMCS;
883 aMCS2Moy /= (Double_t) nMCS;
884 dMCSMoy /= (Double_t) nMCS;
885 dMCS2Moy /= (Double_t) nMCS;
886 adMCSMoy /= (Double_t) nMCS;
887 Double_t sigma2_ThetaMCS = aMCS2Moy - aMCSMoy*aMCSMoy;
888 Double_t sigma2_PosMCS = dMCS2Moy - dMCSMoy*dMCSMoy;
889 Double_t cov_ThetaPosMCS = - (adMCSMoy - aMCSMoy*dMCSMoy);
890 printf("\nmultiple scattering of tracks between 3 and 10 deg. at absorber end:\n");
891 printf(" sigma_ThetaMCS = %f\n", TMath::Sqrt(sigma2_ThetaMCS));
892 printf(" sigma_PosMCS = %f\n", TMath::Sqrt(sigma2_PosMCS));
893 printf(" cov_ThetaPosMCS = %f\n", cov_ThetaPosMCS);
894 printf(" --> sigma_DCA = %f\n", TMath::Sqrt(AliMUONConstants::AbsZEnd()*AliMUONConstants::AbsZEnd()*sigma2_ThetaMCS
895 - 2.*AliMUONConstants::AbsZEnd()*cov_ThetaPosMCS + sigma2_PosMCS));
896 printf("\n");
c687aa97 897}
898
899//------------------------------------------------------------------------------------
900Double_t langaufun(Double_t *x, Double_t *par) {
901
902 //Fit parameters:
903 //par[0]=Width (scale) parameter of Landau density
904 //par[1]=Most Probable (MP, location) parameter of Landau density
905 //par[2]=Total area (integral -inf to inf, normalization constant)
906 //par[3]=Width (sigma) of convoluted Gaussian function
907 //
908 //In the Landau distribution (represented by the CERNLIB approximation),
909 //the maximum is located at x=-0.22278298 with the location parameter=0.
910 //This shift is corrected within this function, so that the actual
911 //maximum is identical to the MP parameter.
912
913 // Numeric constants
914 Double_t invsq2pi = 0.3989422804014; // (2 pi)^(-1/2)
915 Double_t mpshift = -0.22278298; // Landau maximum location
916
917 // Control constants
918 Double_t np = 100.0; // number of convolution steps
919 Double_t sc = 5.0; // convolution extends to +-sc Gaussian sigmas
920
921 // Variables
922 Double_t xx;
923 Double_t mpc;
924 Double_t fland;
925 Double_t sum = 0.0;
926 Double_t xlow,xupp;
927 Double_t step;
928 Double_t i;
929
930
931 // MP shift correction
932 mpc = par[1] - mpshift * par[0];
933
934 // Range of convolution integral
935 xlow = x[0] - sc * par[3];
936 xupp = x[0] + sc * par[3];
937
938 step = (xupp-xlow) / np;
939
940 // Convolution integral of Landau and Gaussian by sum
941 for(i=1.0; i<=np/2; i++) {
942 xx = xlow + (i-.5) * step;
943 //change x -> -x because the tail of the Landau is at the left here...
944 fland = TMath::Landau(-xx,mpc,par[0]) / par[0];
945 sum += fland * TMath::Gaus(x[0],xx,par[3]);
946
947 //change x -> -x because the tail of the Landau is at the left here...
948 xx = xupp - (i-.5) * step;
949 fland = TMath::Landau(-xx,mpc,par[0]) / par[0];
950 sum += fland * TMath::Gaus(x[0],xx,par[3]);
951 }
952
953 return (par[2] * step * sum * invsq2pi / par[3]);
b8dc484b 954}
955
e1fe81b8 956//------------------------------------------------------------------------------------
957void FitGausResVsMom(TH2* h, Int_t nBins, const Double_t mean0, const Double_t sigma0,
958 const char* fitting, TGraphAsymmErrors* gMean, TGraphAsymmErrors* gSigma)
959{
960 /// generic function to fit residuals versus momentum with a gaussian
961 static TF1* fGaus = 0x0;
962 if (!fGaus) fGaus = new TF1("fGaus","gaus");
963
964 Int_t rebinFactorX = TMath::Max(h->GetNbinsX()/nBins, 1);
965 for (Int_t i = rebinFactorX; i <= h->GetNbinsX(); i+=rebinFactorX) {
966 cout<<Form("\rFitting %s... %d/%d",fitting,i/rebinFactorX,nBins)<<flush;
967 TH1D *tmp = h->ProjectionY("tmp",i-rebinFactorX+1,i,"e");
968 fGaus->SetParameters(tmp->GetEntries(), mean0, sigma0);
969 tmp->Fit("fGaus","WWNQ");
970 Int_t rebin = TMath::Max(Int_t(0.5*fGaus->GetParameter(2)/tmp->GetBinWidth(1)),1);
971 while (tmp->GetNbinsX()%rebin!=0) rebin--;
972 tmp->Rebin(rebin);
973 tmp->Fit("fGaus","NQ");
974 h->GetXaxis()->SetRange(i-rebinFactorX+1,i);
248ee365 975 Double_t p = (tmp->GetEntries() > 0) ? h->GetMean() : 0.5 * (h->GetBinLowEdge(i-rebinFactorX+1) + h->GetBinLowEdge(i+1));
e1fe81b8 976 h->GetXaxis()->SetRange();
977 Double_t pErr[2] = {p-h->GetBinLowEdge(i-rebinFactorX+1), h->GetBinLowEdge(i+1)-p};
978 gMean->SetPoint(i/rebinFactorX-1, p, fGaus->GetParameter(1));
979 gMean->SetPointError(i/rebinFactorX-1, pErr[0], pErr[1], fGaus->GetParError(1), fGaus->GetParError(1));
980 gSigma->SetPoint(i/rebinFactorX-1, p, fGaus->GetParameter(2));
981 gSigma->SetPointError(i/rebinFactorX-1, pErr[0], pErr[1], fGaus->GetParError(2), fGaus->GetParError(2));
982 delete tmp;
983 }
984 cout<<Form("\rFitting %s... %d/%d",fitting,nBins,nBins)<<endl;
985}
986
987//------------------------------------------------------------------------------------
988void FitPDCAVsMom(TH2* h, Int_t nBins, const char* fitting, TGraphAsymmErrors* gSigma)
989{
990 /// generic function to fit p*DCA distributions
991 static TF1* fPGaus = 0x0;
992 if (!fPGaus) fPGaus = new TF1("fPGaus","x*gaus");
993
994 Int_t rebinFactorX = TMath::Max(h->GetNbinsX()/nBins, 1);
995 for (Int_t i = rebinFactorX; i <= h->GetNbinsX(); i+=rebinFactorX) {
996 cout<<Form("\rFitting %s... %d/%d",fitting,i/rebinFactorX,nBins)<<flush;
997 TH1D *tmp = h->ProjectionY("tmp",i-rebinFactorX+1,i,"e");
998 fPGaus->SetParameters(1.,-100.,100.);
999 Int_t rebin = 50.*(tmp->GetNbinsX()/(tmp->GetBinLowEdge(tmp->GetNbinsX()+1)-tmp->GetBinLowEdge(1)));
1000 while (tmp->GetNbinsX()%rebin!=0) rebin--;
1001 tmp->Rebin(rebin);
1002 tmp->Fit("fPGaus","NQ");
1003 h->GetXaxis()->SetRange(i-rebinFactorX+1,i);
248ee365 1004 Double_t p = (tmp->GetEntries() > 0) ? h->GetMean() : 0.5 * (h->GetBinLowEdge(i-rebinFactorX+1) + h->GetBinLowEdge(i+1));
e1fe81b8 1005 h->GetXaxis()->SetRange();
1006 Double_t pErr[2] = {p-h->GetBinLowEdge(i-rebinFactorX+1), h->GetBinLowEdge(i+1)-p};
1007 gSigma->SetPoint(i/rebinFactorX-1, p, fPGaus->GetParameter(2));
1008 gSigma->SetPointError(i/rebinFactorX-1, pErr[0], pErr[1], fPGaus->GetParError(2), fPGaus->GetParError(2));
1009 delete tmp;
1010 }
1011 cout<<Form("\rFitting %s... %d/%d",fitting,nBins,nBins)<<endl;
1012}
1013
1014//------------------------------------------------------------------------------------
1015TCanvas* DrawVsAng(const char* name, const char* title, TH1* h1, TH2* h2)
1016{
1017 /// generic function to draw histograms versus absorber angular region
1018 TCanvas* c = new TCanvas(name, title);
1019 c->cd();
1020 h1->Draw();
1021 TH1D *proj1 = h2->ProjectionY(Form("%s_proj_0_2",h2->GetName()),1,2);
1022 proj1->Draw("sames");
1023 proj1->SetLineColor(2);
1024 TH1D *proj2 = h2->ProjectionY(Form("%s_proj_2_3",h2->GetName()),3,3);
1025 proj2->Draw("sames");
1026 proj2->SetLineColor(4);
1027 TH1D *proj3 = h2->ProjectionY(Form("%s__proj_3_10",h2->GetName()),4,10);
1028 proj3->Draw("sames");
1029 proj3->SetLineColor(3);
1030 return c;
1031}
1032
1033//------------------------------------------------------------------------------------
1034TCanvas* DrawVsPos(const char* name, const char* title, TH2* h1, TH2* h2, TH2* h3)
1035{
1036 /// generic function to draw histograms versus position at absorber end
1037 TCanvas* c = new TCanvas(name, title);
1038 c->cd();
1039 h1->Draw();
1040 h1->SetMarkerColor(2);
1041 h2->Draw("sames");
1042 h2->SetMarkerColor(4);
1043 h3->Draw("sames");
1044 h3->SetMarkerColor(3);
1045 return c;
1046}
1047
1048//------------------------------------------------------------------------------------
1049TCanvas* DrawResMomVsMom(const char* name, const char* title, TH2* h, Int_t nBins, TF1* f2, const char* fitting)
1050{
1051 /// generic function to draw and eventually fit momentum residuals versus momentum
1052 TLegend* l = new TLegend(0.15,0.25,0.3,0.85);
1053 TCanvas* c = new TCanvas(name, title);
1054 c->cd();
1055 TH1D* proj = 0x0;
1056 h->Sumw2();
1057 Int_t rebinFactorX = TMath::Max(h->GetNbinsX()/nBins, 1);
1058 for (Int_t i = rebinFactorX; i <= h->GetNbinsX(); i+=rebinFactorX) {
1059 if (f2) cout<<Form("\rFitting %s... %d/%d",fitting,i/rebinFactorX,nBins)<<flush;
1060 proj = h->ProjectionY(Form("%s_%d",h->GetName(),i/rebinFactorX),i-rebinFactorX+1,i);
1061 if (proj->GetEntries() > 0) proj->Scale(1./proj->GetEntries());
1062 proj->Draw((i==rebinFactorX)?"hist":"histsames");
1063 proj->SetLineColor(i/rebinFactorX);
1064 if (f2) {
1065 f2->SetParameters(0.2,0.,1.,1.);
1066 f2->SetLineColor(i/rebinFactorX);
1067 proj->Fit("f2","WWNQ","sames");
1068 Double_t fwhm = f2->GetParameter(0);
1069 Double_t sigma = f2->GetParameter(3);
1070 Double_t sigmaP = TMath::Sqrt(sigma*sigma + fwhm*fwhm/(8.*log(2.)));
1071 Int_t rebin = TMath::Max(Int_t(0.5*sigmaP/proj->GetBinWidth(1)),1);
1072 while (proj->GetNbinsX()%rebin!=0) rebin--;
1073 proj->Rebin(rebin);
1074 proj->Scale(1./rebin);
1075 proj->Fit("f2","Q","sames");
1076 } else proj->SetLineWidth(2);
1077 Double_t p = 0.5 * (h->GetBinLowEdge(i-rebinFactorX+1) + h->GetBinLowEdge(i+1));
1078 l->AddEntry(proj,Form("%5.1f GeV",p));
1079 }
1080 if (f2) cout<<Form("\rFitting %s... %d/%d",fitting,nBins,nBins)<<endl;
1081 l->Draw("same");
1082 return c;
1083}
1084