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a1f80595 | 1 | // |
2 | // $Id$ | |
3 | // | |
4 | // Script that contains a class to draw hits, using the | |
5 | // AliFMDInputHits class in the util library. | |
6 | // | |
7 | // It draws the energy loss versus the p/(mq^2). It can be overlayed | |
8 | // with the Bethe-Bloc curve to show how the simulation behaves | |
9 | // relative to the expected. | |
10 | // | |
11 | // Use the script `Compile.C' to compile this class using ACLic. | |
12 | // | |
13 | #include <TH2D.h> | |
14 | #include <AliFMDHit.h> | |
15 | #include <AliFMDInput.h> | |
16 | #include <iostream> | |
17 | #include <TStyle.h> | |
18 | ||
19 | class DrawHits : public AliFMDInputHits | |
20 | { | |
21 | private: | |
22 | TH2D* fElossVsPMQ; // Histogram | |
23 | public: | |
24 | DrawHits() | |
25 | { | |
26 | fElossVsPMQ = new TH2D("bad", "#Delta E vs. p/(mq^{2})>1GeV", | |
27 | 1000, 1, 100, 50, 0.00001, 10); | |
28 | fElossVsPMQ->SetXTitle("p/(mq^{2}) [GeV/GeV]"); | |
29 | fElossVsPMQ->SetYTitle("#Delta E [MeV]"); | |
30 | } | |
31 | Bool_t ProcessHit(AliFMDHit* hit, TParticle*) | |
32 | { | |
33 | if (!hit) { | |
34 | std::cout << "No hit" << std::endl; | |
35 | return kFALSE; | |
36 | } | |
37 | Float_t pmq = 0; | |
38 | if (hit->M() != 0 && hit->Q() != 0) | |
39 | pmq = hit->P() / hit->M() / TMath::Power(hit->Q()/3, 2); | |
40 | fElossVsPMQ->Fill(pmq, hit->Edep()); | |
41 | return kTRUE; | |
42 | } | |
43 | Bool_t Finish() | |
44 | { | |
45 | gStyle->SetPalette(1); | |
46 | fElossVsPMQ->SetStats(kFALSE); | |
47 | fElossVsPMQ->Draw("COLZ"); | |
48 | return kTRUE; | |
49 | } | |
50 | }; | |
51 | ||
52 | //____________________________________________________________________ | |
53 | // | |
54 | // EOF | |
55 | // |