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Commit | Line | Data |
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754a67f2 | 1 | void TestPrimaries(Int_t evNumber1=0, Int_t evNumber2=0) |
2 | { | |
3 | // Dynamically link some shared libs | |
4 | if (gClassTable->GetID("AliRun") < 0) { | |
5 | gROOT->LoadMacro("loadlibs.C"); | |
6 | loadlibs(); | |
7 | } | |
8 | // Connect the Root Galice file containing Geometry, Kine and Hits | |
9 | ||
10 | TFile *file = (TFile*)gROOT->GetListOfFiles()->FindObject("galice.root"); | |
11 | ||
12 | if (!file) { | |
13 | printf("\n Creating galice.root \n"); | |
14 | file = new TFile("galice.root"); | |
15 | } else { | |
16 | printf("\n galice.root found in file list"); | |
17 | } | |
18 | file->ls(); | |
19 | // | |
20 | TDatabasePDG* DataBase = new TDatabasePDG(); | |
21 | ||
22 | // Get AliRun object from file or create it if not on file | |
23 | if (!gAlice) { | |
24 | gAlice = (AliRun*)(file->Get("gAlice")); | |
25 | if (gAlice) printf("AliRun object found on file\n"); | |
26 | if (!gAlice) { | |
27 | printf("\n create new gAlice object"); | |
28 | gAlice = new AliRun("gAlice","Alice test program"); | |
29 | } | |
30 | } | |
31 | ||
32 | // Create some histograms | |
33 | ||
34 | TH1F *thetaH = new TH1F("thetaH","Theta distribution",180,0,180); | |
35 | TH1F *phiH = new TH1F("phiH","Phi distribution" ,180,-180,180); | |
36 | TH1F *etaH = new TH1F("etaH","Pseudorapidity",120,-12,12); | |
37 | TH1F *yH = new TH1F("yH","Rapidity distribution",120,-12,12); | |
38 | TH1F *eH = new TH1F("eH","Energy distribution",100,0,100); | |
a78c8623 | 39 | TH1F *eetaH = new TH1F("eetaH","Pseudorapidity",120,0,12); |
754a67f2 | 40 | TH1F *ptH = new TH1F("ptH","Pt distribution",150,0,15); |
41 | // | |
42 | // Loop over events | |
43 | // | |
44 | ||
45 | for (Int_t nev=0; nev<= evNumber2; nev++) { | |
14b783fa | 46 | |
754a67f2 | 47 | Int_t nparticles = gAlice->GetEvent(nev); |
48 | if (nev < evNumber1) continue; | |
49 | if (nparticles <= 0) return; | |
14b783fa | 50 | |
51 | TObjArray* parray = gAlice->Particles(); | |
52 | Int_t npart = (gAlice->TreeK())->GetEntries(); | |
754a67f2 | 53 | // |
54 | // Loop over primary particles (jpsi. upsilon, ...) | |
55 | // | |
14b783fa | 56 | |
754a67f2 | 57 | for (Int_t part=0; part<npart; part++) { |
14b783fa | 58 | TParticle *MPart = gAlice->Particle(part); |
754a67f2 | 59 | Int_t mpart = MPart->GetPdgCode(); |
60 | Int_t child1 = MPart->GetFirstDaughter(); | |
61 | Int_t child2 = MPart->GetLastDaughter(); | |
62 | Int_t mother = MPart->GetFirstMother(); | |
14b783fa | 63 | printf("\n %d %d %d %d ", mpart, child1, child2, mother); |
754a67f2 | 64 | |
65 | Float_t Pt = MPart->Pt(); | |
66 | Float_t E = MPart->Energy(); | |
67 | Float_t Pz = MPart->Pz(); | |
68 | Float_t Py = MPart->Py(); | |
69 | Float_t Px = MPart->Px(); | |
70 | Float_t pT = TMath::Sqrt(Px*Px+Py*Py); | |
71 | Float_t theta = MPart->Theta(); | |
72 | Float_t phi = MPart->Phi()-TMath::Pi(); | |
73 | Float_t eta = -TMath::Log(TMath::Tan(theta/2.)); | |
a78c8623 | 74 | Float_t y = 0.5*TMath::Log((E+Pz)/(E-Pz+1.e-13)); |
75 | ||
76 | if (child1 >= 0) continue; | |
77 | if (mpart == kPi0 || mpart == kGamma) continue; | |
78 | Float_t wgt = 1./(Float_t ((evNumber2-evNumber1)+1.)); | |
79 | thetaH->Fill(theta*180./TMath::Pi(),wgt); | |
80 | phiH->Fill(phi*180./TMath::Pi(),wgt); | |
81 | etaH->Fill(eta,5.*wgt); | |
754a67f2 | 82 | eetaH->Fill(eta,E); |
a78c8623 | 83 | yH->Fill(y,5.*wgt); |
84 | eH->Fill(E,wgt); | |
85 | ptH->Fill(pT,wgt); | |
754a67f2 | 86 | } // primary loop |
87 | } | |
88 | ||
89 | //Create a canvas, set the view range, show histograms | |
90 | TCanvas *c1 = new TCanvas("c1","Canvas 1",400,10,600,700); | |
91 | c1->Divide(2,2); | |
92 | c1->cd(1); ptH->Draw(); | |
93 | c1->cd(2); etaH->Draw(); | |
94 | c1->cd(3); yH->Draw(); | |
95 | c1->cd(4 | |
96 | ||
97 | ||
98 | ||
99 | ); eH->Draw(); | |
100 | ||
101 | TCanvas *c2 = new TCanvas("c2","Canvas 1",400,10,600,700); | |
102 | c2->Divide(2,2); | |
103 | c2->cd(1); phiH->Draw(); | |
104 | c2->cd(2); thetaH->Draw(); | |
105 | c2->cd(3); eetaH->Draw(); | |
a78c8623 | 106 | Float_t i0,i1,i2,i3,i4,i5; |
107 | Float_t ne = Float_t ((evNumber2-evNumber1)+1.); | |
108 | ||
109 | i0=eetaH->Integral(01,25)/1000./ne; | |
110 | i1=eetaH->Integral(25,40)/1000./ne; | |
111 | i2=eetaH->Integral(40,50)/1000./ne; | |
112 | i3=eetaH->Integral(50,60)/1000./ne; | |
113 | i4=eetaH->Integral(60,70)/1000./ne; | |
114 | i5=eetaH->Integral(70,120)/1000./ne; | |
115 | ||
116 | printf(" 0 < eta < 2.5 %f \n",i0); | |
117 | printf("2.5 < eta < 4.0 %f \n",i1); | |
118 | printf("4.0 < eta < 5.0 %f \n",i2); | |
119 | printf("5.0 < eta < 6.0 %f \n",i3); | |
120 | printf("6.0 < eta < 7.0 %f \n",i4); | |
121 | printf("7.0 < eta <12.0 %f \n",i5); | |
122 | ||
754a67f2 | 123 | } |
124 | ||
125 | ||
126 | ||
127 | ||
128 | ||
129 | ||
130 |