4 #include <TInterpreter.h>
11 #include "AliFMDAnalysisTaskDensity.h"
12 #include "AliAnalysisManager.h"
13 #include "AliESDFMD.h"
14 #include "AliESDEvent.h"
15 #include "AliAODEvent.h"
16 #include "AliAODHandler.h"
17 #include "AliMCEventHandler.h"
19 #include "AliESDVertex.h"
21 #include "AliFMDAnaParameters.h"
22 #include "AliFMDGeometry.h"
23 #include "AliFMDRing.h"
25 ClassImp(AliFMDAnalysisTaskDensity)
27 //_____________________________________________________________________
28 AliFMDAnalysisTaskDensity::AliFMDAnalysisTaskDensity()
38 // Default constructor
39 DefineInput (0, AliESDFMD::Class());
40 DefineInput (1, AliESDVertex::Class());
41 DefineOutput(0,TList::Class());
43 //_____________________________________________________________________
44 AliFMDAnalysisTaskDensity::AliFMDAnalysisTaskDensity(const char* name, Bool_t SE):
45 AliAnalysisTask(name, "Density"),
57 DefineInput (0, AliESDFMD::Class());
58 DefineInput (1, AliESDVertex::Class());
59 DefineOutput(0, TList::Class());
62 //_____________________________________________________________________
63 void AliFMDAnalysisTaskDensity::CreateOutputObjects()
65 AliFMDAnaParameters* pars = AliFMDAnaParameters::Instance();
67 fArray.SetName("FMD");
70 fOutputList = new TList();
71 fOutputList->SetName("density_list");
73 fOutputList->Add(&fArray);
74 fOutputList->Add(&fVertexString);
78 Int_t nVtxbins = pars->GetNvtxBins();
80 for(Int_t det =1; det<=3;det++)
82 TObjArray* detArray = new TObjArray();
83 detArray->SetName(Form("FMD%d",det));
84 fArray.AddAtAndExpand(detArray,det);
85 Int_t nRings = (det==1 ? 1 : 2);
86 for(Int_t ring = 0;ring<nRings;ring++)
88 Char_t ringChar = (ring == 0 ? 'I' : 'O');
89 Int_t nSec = (ring == 0 ? 20 : 40);
91 TObjArray* vtxArray = new TObjArray();
92 vtxArray->SetName(Form("FMD%d%c",det,ringChar));
93 detArray->AddAtAndExpand(vtxArray,ring);
94 for(Int_t i = 0; i< nVtxbins; i++) {
95 TH2F* hBg = pars->GetBackgroundCorrection(det, ringChar, i);
97 hMult = new TH2F(Form("FMD%d%c_vtxbin%d",det,ringChar,i),Form("FMD%d%c_vtxbin%d",det,ringChar,i),
99 hBg->GetXaxis()->GetXmin(),
100 hBg->GetXaxis()->GetXmax(),
101 nSec, 0, 2*TMath::Pi());
103 vtxArray->AddAtAndExpand(hMult,i);
112 //_____________________________________________________________________
113 void AliFMDAnalysisTaskDensity::ConnectInputData(Option_t */*option*/)
116 fESD = (AliESDFMD*)GetInputData(0);
117 fVertex = (AliESDVertex*)GetInputData(1);
120 //_____________________________________________________________________
121 void AliFMDAnalysisTaskDensity::Exec(Option_t */*option*/)
123 AliFMDAnaParameters* pars = AliFMDAnaParameters::Instance();
124 AliFMDGeometry* geo = AliFMDGeometry::Instance();
126 //AliESDFMD* fmd = fESD->GetFMDData();
129 fVertex->GetXYZ(vertex);
131 if( TMath::Abs(vertex[2]) > pars->GetVtxCutZ()) {
138 Double_t delta = 2*pars->GetVtxCutZ()/pars->GetNvtxBins();
139 Double_t vertexBinDouble = (vertex[2] + pars->GetVtxCutZ()) / delta;
141 Int_t vtxbin = (Int_t)vertexBinDouble;
143 fVertexString.SetString(Form("%d",vtxbin));
145 for(UShort_t det=1;det<=3;det++) {
146 TObjArray* detArray = (TObjArray*)fArray.At(det);
147 Int_t nRings = (det==1 ? 1 : 2);
148 for (UShort_t ir = 0; ir < nRings; ir++) {
149 TObjArray* vtxArray = (TObjArray*)detArray->At(ir);
151 TH2F* hMult = (TH2F*)vtxArray->At(vtxbin);
158 for(UShort_t det=1;det<=3;det++) {
159 TObjArray* detArray = (TObjArray*)fArray.At(det);
160 Int_t nRings = (det==1 ? 1 : 2);
161 for (UShort_t ir = 0; ir < nRings; ir++) {
162 TObjArray* vtxArray = (TObjArray*)detArray->At(ir);
164 TH2F* hMult = (TH2F*)vtxArray->At(vtxbin);
166 Char_t ring = (ir == 0 ? 'I' : 'O');
167 UShort_t nsec = (ir == 0 ? 20 : 40);
168 UShort_t nstr = (ir == 0 ? 512 : 256);
170 for(UShort_t sec =0; sec < nsec; sec++) {
171 for(UShort_t strip = 0; strip < nstr; strip++) {
172 Float_t mult = fESD->Multiplicity(det,ring,sec,strip);
173 Float_t eta = fESD->Eta(det,ring,sec,strip);
174 Float_t mult_cut = 0.2;
175 if(mult == 0 || mult == AliESDFMD::kInvalidMult) continue;
176 //Particle number cut goes here...
177 Float_t nParticles = 0;
178 if(fESD->GetUniqueID() == kTRUE) {
186 Float_t mpv = pars->GetMPV(det,ring,eta);
187 Float_t sigma = pars->GetSigma(det,ring,eta);
188 Float_t alpha = pars->Get2MIPWeight(det,ring,eta);
189 Float_t beta = pars->Get3MIPWeight(det,ring,eta);
191 Float_t sumCor = TMath::Landau(mult,mpv,sigma,kTRUE)+
192 alpha*TMath::Landau(mult,2*mpv+2*sigma*TMath::Log(2),2*sigma,kTRUE)+
193 beta*TMath::Landau(mult,3*mpv+3*sigma*TMath::Log(3),3*sigma,kTRUE);
194 Float_t weight = TMath::Landau(mult,mpv,sigma,kTRUE)+
195 2*alpha*TMath::Landau(mult,2*mpv+2*sigma*TMath::Log(2),2*sigma,kTRUE)+
196 3*beta*TMath::Landau(mult,3*mpv+3*sigma*TMath::Log(3),3*sigma,kTRUE);
199 if(mult > 0){//mult_cut) {
200 if(sumCor) nParticles = weight / sumCor;
203 //std::cout<<sumCor<<" "<<weight<<" "<<" "<<mult<<" "<<nParticles<<std::endl;
209 geo->Detector2XYZ(det,ring,sec,strip,x,y,z);
210 Float_t phi = TMath::ATan2(y,x);
212 phi = phi+2*TMath::Pi();
213 Float_t correction = GetAcceptanceCorrection(ring,strip);
214 if(correction) nParticles = nParticles / correction;
215 hMult->Fill(eta,phi,nParticles);
227 PostData(0, fOutputList);
231 //_____________________________________________________________________
232 Float_t AliFMDAnalysisTaskDensity::GetAcceptanceCorrection(Char_t ring, UShort_t strip)
234 AliFMDRing fmdring(ring);
236 Float_t rad = fmdring.GetMaxR()-fmdring.GetMinR();
237 Float_t segment = rad / fmdring.GetNStrips();
238 Float_t radius = fmdring.GetMinR() + segment*strip;
240 Float_t basearea1 = 0.5*fmdring.GetBaseStripLength(strip)*TMath::Power(radius,2);
241 Float_t basearea2 = 0.5*fmdring.GetBaseStripLength(strip)*TMath::Power((radius-segment),2);
242 Float_t basearea = basearea1 - basearea2;
244 Float_t area1 = 0.5*fmdring.GetStripLength(strip)*TMath::Power(radius,2);
245 Float_t area2 = 0.5*fmdring.GetStripLength(strip)*TMath::Power((radius-segment),2);
246 Float_t area = area1 - area2;
248 Float_t correction = area/basearea;