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Commit | Line | Data |
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0d5b5c27 | 1 | // |
2 | // This macro draws time resolution for true hypothesis and fits it with gausian | |
3 | // on a given reference plane in a given momentum range. | |
4 | // The results is then printed to a PostScript file. | |
5 | // The filename is composed out of input parameters. | |
6 | // | |
7 | // Input parameters: | |
8 | // nRefPlane - indicate the reference plane. | |
9 | // 1: in TPC | |
10 | // 2: out TPC | |
11 | // 3: out TRD | |
12 | // | |
13 | // minP, maxP - total momentum cuts. momentum from gAlice are used for cuts | |
14 | // | |
15 | // The macro is using SORTED reference points in a file "trackRef.root". | |
16 | // Track references can be sorted using CopyReferences.C | |
17 | // | |
18 | // Before using check filenames and names of trees invlolved | |
19 | // | |
20 | // ITS tracks (nRefPlane == 1) are compared at inner TPC ref Plane | |
21 | // make shure they are properly propagated to this plane | |
22 | // | |
23 | // Sylwester Radomski, e-mail: S.Radomski@gsi.de | |
24 | // Feb 14, 2002 | |
25 | // | |
26 | ||
27 | ||
28 | CompareTime (Int_t nRefPlane, Double_t minP, Double_t maxP) | |
29 | { | |
30 | ||
31 | // Check input data Consistancy | |
32 | if (nRefPlane < 1 || nRefPlane > 3) { | |
33 | cout << "Wrong Reference Plane Id ( " << nRefPalne << ") [1-3] " << endl; | |
34 | return; | |
35 | } | |
36 | ||
37 | if (maxP < minP) { | |
38 | cout << "MaxP lesser than MinP" << endl; | |
39 | return; | |
40 | } | |
41 | ||
42 | // Style | |
43 | ||
44 | gROOT->SetStyle("Plain"); | |
45 | gStyle->SetOptStat(1110); | |
46 | gStyle->SetOptFit(11); | |
47 | ||
48 | Double_t cc = 0.299792458; | |
49 | AliKalmanTrack::SetConvConst(100/cc/0.4); | |
50 | ||
51 | const char* gFileName = "galice.root"; | |
52 | const char* refFileName = "trackRef.root"; | |
53 | ||
54 | const char* trackFileName[] = {"AliTPCtracks.root", "AliTPCBackTracks.root", "AliTRDtracks.root"}; | |
55 | const char *treeName[] = {"TreeT_ITSb_0", "seedsTPCtoTRD_0", "TRDb_0"}; | |
56 | const char *refTreeName[] = {"TPC", "TPC", "TRD"}; | |
57 | ||
58 | // Histograms | |
59 | ||
60 | const Int_t nTypes = 5; | |
61 | Int_t codes[] = {11, 13, 211, 321, 2212}; | |
62 | ||
63 | //Double_t cutoff[] = {20, 20, 20, 100, 100}; | |
64 | Double_t cutoff[] = {30, 30, 30, 100, 200}; | |
65 | ||
66 | const char *names[nTypes] = {"Electrons", "Muons", "Pions", "Kaons", "Protons"}; | |
67 | ||
68 | TH1D *hDiffSame[nTypes];; | |
69 | ||
70 | for(Int_t i=0; i<nTypes; i++) | |
71 | hDiffSame[i] = new TH1D(names[i], names[i], 50, -cutoff[i], cutoff[i]); | |
72 | ||
73 | TH1D *hLength = new TH1D("length", "Length Resolution", 100, -0.5, 0.5); | |
74 | ||
75 | // Particles | |
76 | ||
77 | TFile *refFile = new TFile(gFileName, "READ"); | |
78 | gAlice = (AliRun*)refFile->Get("gAlice"); | |
79 | gAlice->GetEvent(0); | |
80 | ||
81 | ||
82 | // Reference tracks | |
83 | ||
84 | refFile = new TFile(refFileName, "READ"); | |
85 | TTree *treeRef = (TTree*)refFile->Get("TreeTR0_Sorted"); | |
86 | TBranch *trkRef = treeRef->GetBranch( refTreeName[nRefPlane-1] ); | |
87 | TClonesArray *trkRefs = new TClonesArray("AliTrackReference", 100); | |
88 | trkRef->SetAddress(&trkRefs); | |
89 | ||
90 | Int_t ntracks = trkRef->GetEntries(); | |
91 | cout << ntracks << endl; | |
92 | ||
93 | // Tracks | |
94 | ||
95 | TFile *trackFile = new TFile(trackFileName[nRefPlane-1]); | |
96 | ||
97 | TTree *tracks = (TTree*)trackFile->Get(treeName[nRefPlane-1]); | |
98 | TBranch *recTracks = tracks->GetBranch("tracks"); | |
99 | AliTPCtrack *track = 0; | |
100 | recTracks->SetAddress(&track); | |
101 | ||
102 | for(Int_t t=0; t<tracks->GetEntries(); t++) { | |
103 | ||
104 | cout << t << "\r"; | |
105 | ||
106 | recTracks->GetEvent(t); | |
107 | ||
108 | Int_t lab = track->GetLabel(); | |
109 | if (lab < 0 || lab > 100000) continue; | |
110 | ||
111 | Int_t pdg = gAlice->Particle(lab)->GetPdgCode(); | |
112 | treeRef->GetEvent(lab); | |
113 | ||
114 | Int_t nEntrRef = trkRefs->GetEntries(); | |
115 | ||
116 | if (gAlice->Particle(lab)->P() < minP ) continue; | |
117 | if (gAlice->Particle(lab)->P() > maxP ) continue; | |
118 | if (gAlice->Particle(lab)->GetFirstMother() != -1) continue; | |
119 | ||
120 | if (!(nEntrRef)) continue; | |
121 | ||
122 | Double_t timeTrue, timeTrack; | |
123 | Double_t trueLength; | |
124 | ||
125 | Int_t index = nEntrRef-1; | |
126 | if (nRefPlane == 1) index = 0; | |
127 | ||
128 | timeTrue = ((AliTrackReference*)(*trkRefs)[index])->GetTime() * 1e12; | |
129 | trueLength = ((AliTrackReference*)(*trkRefs)[index])->GetLength(); | |
130 | ||
131 | hLength->Fill(trueLength - track->GetIntegratedLength()); | |
132 | ||
133 | for(Int_t i=0; i<nTypes; i++) { | |
134 | timeTrack = track->GetIntegratedTime(codes[i]); | |
135 | if (abs(pdg) == codes[i]) hDiffSame[i]->Fill(timeTrue - timeTrack); | |
136 | } | |
137 | } | |
138 | ||
139 | TCanvas *c = new TCanvas(); | |
140 | c->SetCanvasSize(640, 800); | |
141 | c->SetWindowSize(650, 830); | |
142 | c->Divide(2,3); | |
143 | ||
144 | c->cd(1); | |
145 | hLength->Draw(); | |
146 | hLength->SetXTitle("True Length - Measured Length [cm]"); | |
147 | ||
148 | for(Int_t i=0; i<nTypes; i++) { | |
149 | c->cd(2+i); | |
150 | gPad->SetGridx(); | |
151 | gPad->SetGridy(); | |
152 | hDiffSame[i]->Draw(); | |
153 | hDiffSame[i]->SetXTitle("time true - measured [ps]"); | |
154 | hDiffSame[i]->Fit("gaus"); | |
155 | } | |
156 | ||
157 | char outFileName[80]; | |
158 | const char *refPlaneNames[] = {"inTPC", "outTPC","outTRD"}; | |
159 | ||
160 | c->Modified(); | |
161 | c->ForceUpdate(); | |
162 | ||
163 | sprintf(outFileName, "time_%s_%3.2f-%3.2f.ps", refPlaneNames[nRefPlane-1], minP, maxP); | |
164 | c->Print(outFileName); | |
165 | ||
166 | if (treeRef) delete treeRef; | |
167 | if (tracks) delete tracks; | |
168 | ||
169 | } |