2 // This class calculates the inclusive charged particle density
3 // in each for the 5 FMD rings based on the MC truth.
6 // - AliMCEvent MC truth event infromation
15 #include "AliFMDMCDensityCalculator.h"
17 #include "AliForwardCorrectionManager.h"
18 #include "AliFMDStripIndex.h"
19 #include "AliMCEvent.h"
20 #include "AliESDFMD.h"
23 #include <TProfile2D.h>
25 ClassImp(AliFMDMCDensityCalculator)
30 //____________________________________________________________________
31 AliFMDMCDensityCalculator::~AliFMDMCDensityCalculator()
36 if (fComps) fComps->Clear();
37 if (fFMD1i) delete fFMD1i;
38 if (fFMD2i) delete fFMD2i;
39 if (fFMD2o) delete fFMD2o;
40 if (fFMD3i) delete fFMD3i;
41 if (fFMD3o) delete fFMD3o;
42 if (fFMD1iC) delete fFMD1iC;
43 if (fFMD2iC) delete fFMD2iC;
44 if (fFMD2oC) delete fFMD2oC;
45 if (fFMD3iC) delete fFMD3iC;
46 if (fFMD3oC) delete fFMD3oC;
49 //____________________________________________________________________
50 AliFMDMCDensityCalculator&
51 AliFMDMCDensityCalculator::operator=(const AliFMDMCDensityCalculator& o)
54 // Assignement operator
57 // o Object to assign from
60 // Reference to this object
62 AliFMDDensityCalculator::operator=(o);
67 //____________________________________________________________________
69 AliFMDMCDensityCalculator::Init(const TAxis& eAxis)
72 // Initialize this object
75 // etaAxis Eta axis to use
77 fFMD1i = Make(1,'I',eAxis);
78 fFMD2i = Make(2,'I',eAxis);
79 fFMD2o = Make(2,'O',eAxis);
80 fFMD3i = Make(3,'I',eAxis);
81 fFMD3o = Make(3,'O',eAxis);
82 fFMD1iC = Make(1,'I');
83 fFMD2iC = Make(2,'I');
84 fFMD2oC = Make(2,'O');
85 fFMD3iC = Make(3,'I');
86 fFMD3oC = Make(3,'O');
101 //____________________________________________________________________
103 AliFMDMCDensityCalculator::CalculateMC(const AliESDFMD& fmd,
104 AliForwardUtil::Histos& hists)
107 // Calculate the charged particle density from the MC track references.
111 // hists Histograms to fill
112 // vz Interaction z coordinate @f$ v_z@f$
113 // vtxBin bin corresponding to @f$ v_z@f$
118 for (UShort_t d=1; d<=3; d++) {
119 UShort_t nr = (d == 1 ? 1 : 2);
120 for (UShort_t q=0; q<nr; q++) {
121 Char_t r = (q == 0 ? 'I' : 'O');
122 UShort_t ns= (q == 0 ? 20 : 40);
123 UShort_t nt= (q == 0 ? 512 : 256);
124 TH2D* h = hists.Get(d,r);
126 for (UShort_t s=0; s<ns; s++) {
127 for (UShort_t t=0; t<nt; t++) {
128 Float_t mult = fmd.Multiplicity(d,r,s,t);
130 if (mult == 0 || mult > 20) continue;
132 Float_t phi = fmd.Phi(d,r,s,t) / 180 * TMath::Pi();
133 Float_t eta = fmd.Eta(d,r,s,t);
135 Float_t corr = Correction(d, r, s, t, eta, 0, false);
136 Float_t sig = (corr <= 0 ? 0 : mult / corr);
137 h->Fill(eta,phi,sig);
145 //____________________________________________________________________
147 AliFMDMCDensityCalculator::Make(UShort_t d, Char_t r,
148 const TAxis& axis) const
151 // MAke comparison profiles
159 // Newly allocated profile object
161 TProfile2D* ret = new TProfile2D(Form("FMD%d%c_esd_vs_mc", d, r),
162 Form("ESD/MC signal for FMD%d%c", d, r),
166 (r == 'I' || r == 'i') ? 20 : 40,
168 ret->GetXaxis()->SetTitle("#eta");
169 ret->GetYaxis()->SetTitle("#varphi [degrees]");
170 ret->GetZaxis()->SetTitle("#LT incusive density ESD/MC#GT");
171 ret->SetDirectory(0);
174 //____________________________________________________________________
176 AliFMDMCDensityCalculator::Make(UShort_t d, Char_t r) const
179 // MAke comparison profiles
186 // Newly allocated profile object
188 TH2D* ret = new TH2D(Form("FMD%d%c_corr_mc_esd", d, r),
189 Form("ESD-MC correlation for FMD%d%c", d, r),
190 200, 0, 20, 200, 0, 20);
191 ret->GetXaxis()->SetTitle("m_{incl} (MC)");
192 ret->GetYaxis()->SetTitle("#Delta/#Delta_{mp} (ESD)");
193 ret->GetZaxis()->SetTitle("Correlation");
194 ret->SetDirectory(0);
197 //____________________________________________________________________
199 AliFMDMCDensityCalculator::Fill(UShort_t d, Char_t r, TH2* esd, TH2* mc)
202 // Fill comparison profiles
210 if (!esd || !mc) return;
219 p = (r == 'I' || r == 'i' ? fFMD2i : fFMD2o);
220 h = (r == 'I' || r == 'i' ? fFMD2iC : fFMD2oC);
223 p = (r == 'I' || r == 'i' ? fFMD3i : fFMD3o);
224 h = (r == 'I' || r == 'i' ? fFMD3iC : fFMD3oC);
229 for (Int_t iEta = 1; iEta <= esd->GetNbinsX(); iEta++) {
230 Double_t eta = esd->GetXaxis()->GetBinCenter(iEta);
231 for (Int_t iPhi = 1; iPhi <= esd->GetNbinsY(); iPhi++) {
232 Double_t phi = esd->GetYaxis()->GetBinCenter(iPhi);
233 Double_t mEsd = esd->GetBinContent(iEta,iPhi);
234 Double_t mMc = mc->GetBinContent(iEta,iPhi);
236 p->Fill(eta, phi, (mMc > 0 ? mEsd / mMc : 0));
242 //____________________________________________________________________
244 AliFMDMCDensityCalculator::CompareResults(AliForwardUtil::Histos& esd,
245 AliForwardUtil::Histos& mc)
248 // Compare the result of analysing the ESD for
249 // the inclusive charged particle density to analysing
259 Fill(1, 'I', esd.Get(1,'I'), mc.Get(1,'I'));
260 Fill(2, 'I', esd.Get(2,'I'), mc.Get(2,'I'));
261 Fill(2, 'O', esd.Get(2,'O'), mc.Get(2,'O'));
262 Fill(3, 'I', esd.Get(3,'I'), mc.Get(3,'I'));
263 Fill(3, 'O', esd.Get(3,'O'), mc.Get(3,'O'));
268 //____________________________________________________________________
270 AliFMDMCDensityCalculator::DefineOutput(TList* dir)
273 // Output diagnostic histograms to directory
276 // dir List to write in
278 AliFMDDensityCalculator::DefineOutput(dir);
279 TList* d = static_cast<TList*>(dir->FindObject(GetName()));
282 fComps->SetName("esd_mc_comparison");
286 //____________________________________________________________________