4 #include <TInterpreter.h>
12 #include "AliFMDAnalysisTaskDensity.h"
13 #include "AliAnalysisManager.h"
14 #include "AliESDFMD.h"
15 #include "AliESDEvent.h"
16 #include "AliAODEvent.h"
17 #include "AliAODHandler.h"
18 #include "AliMCEventHandler.h"
20 #include "AliESDVertex.h"
22 #include "AliFMDAnaParameters.h"
23 #include "AliFMDParameters.h"
24 #include "AliFMDGeometry.h"
25 #include "AliFMDRing.h"
27 ClassImp(AliFMDAnalysisTaskDensity)
29 //_____________________________________________________________________
30 AliFMDAnalysisTaskDensity::AliFMDAnalysisTaskDensity()
40 // Default constructor
41 DefineInput (0, AliESDFMD::Class());
42 DefineInput (1, AliESDVertex::Class());
43 DefineOutput(0,TList::Class());
45 //_____________________________________________________________________
46 AliFMDAnalysisTaskDensity::AliFMDAnalysisTaskDensity(const char* name, Bool_t SE):
47 AliAnalysisTask(name, "Density"),
59 DefineInput (0, AliESDFMD::Class());
60 DefineInput (1, AliESDVertex::Class());
61 DefineOutput(0, TList::Class());
64 fFuncPos = new TF1("funcPos","pol1",0,6);
65 fFuncPos->SetParameters(0.99925,0.00298301);
66 fFuncNeg = new TF1("funcNeg","pol1",-6,0);
67 fFuncNeg->SetParameters(0.987583,-0.0101022);
71 //_____________________________________________________________________
72 void AliFMDAnalysisTaskDensity::CreateOutputObjects()
74 AliFMDAnaParameters* pars = AliFMDAnaParameters::Instance();
76 fArray.SetName("FMD");
79 fOutputList = new TList();
80 fOutputList->SetName("density_list");
82 fOutputList->Add(&fArray);
83 fOutputList->Add(&fVertexString);
87 Int_t nVtxbins = pars->GetNvtxBins();
89 for(Int_t det =1; det<=3;det++)
91 TObjArray* detArray = new TObjArray();
92 detArray->SetName(Form("FMD%d",det));
93 fArray.AddAtAndExpand(detArray,det);
94 Int_t nRings = (det==1 ? 1 : 2);
95 for(Int_t ring = 0;ring<nRings;ring++)
97 Char_t ringChar = (ring == 0 ? 'I' : 'O');
98 Int_t nSec = (ring == 0 ? 20 : 40);
100 TObjArray* vtxArray = new TObjArray();
101 vtxArray->SetName(Form("FMD%d%c",det,ringChar));
102 detArray->AddAtAndExpand(vtxArray,ring);
103 for(Int_t i = 0; i< nVtxbins; i++) {
104 TH2F* hBg = pars->GetBackgroundCorrection(det, ringChar, i);
106 hMult = new TH2F(Form("FMD%d%c_vtxbin%d",det,ringChar,i),Form("FMD%d%c_vtxbin%d",det,ringChar,i),
108 hBg->GetXaxis()->GetXmin(),
109 hBg->GetXaxis()->GetXmax(),
110 nSec, 0, 2*TMath::Pi());
112 vtxArray->AddAtAndExpand(hMult,i);
121 //_____________________________________________________________________
122 void AliFMDAnalysisTaskDensity::ConnectInputData(Option_t */*option*/)
125 fESD = (AliESDFMD*)GetInputData(0);
126 fVertex = (AliESDVertex*)GetInputData(1);
133 //_____________________________________________________________________
134 void AliFMDAnalysisTaskDensity::Exec(Option_t */*option*/)
136 AliFMDAnaParameters* pars = AliFMDAnaParameters::Instance();
137 AliFMDGeometry* geo = AliFMDGeometry::Instance();
139 //AliESDFMD* fmd = fESD->GetFMDData();
142 fVertex->GetXYZ(vertex);
144 if( TMath::Abs(vertex[2]) > pars->GetVtxCutZ()) {
151 Double_t delta = 2*pars->GetVtxCutZ()/pars->GetNvtxBins();
152 Double_t vertexBinDouble = (vertex[2] + pars->GetVtxCutZ()) / delta;
154 Int_t vtxbin = (Int_t)vertexBinDouble;
158 fVertexString.SetString(Form("%d",vtxbin));
160 for(UShort_t det=1;det<=3;det++) {
161 TObjArray* detArray = (TObjArray*)fArray.At(det);
162 Int_t nRings = (det==1 ? 1 : 2);
163 for (UShort_t ir = 0; ir < nRings; ir++) {
164 TObjArray* vtxArray = (TObjArray*)detArray->At(ir);
166 TH2F* hMult = (TH2F*)vtxArray->At(vtxbin);
173 for(UShort_t det=1;det<=3;det++) {
174 TObjArray* detArray = (TObjArray*)fArray.At(det);
175 Int_t nRings = (det==1 ? 1 : 2);
176 for (UShort_t ir = 0; ir < nRings; ir++) {
177 TObjArray* vtxArray = (TObjArray*)detArray->At(ir);
179 TH2F* hMult = (TH2F*)vtxArray->At(vtxbin);
181 Char_t ring = (ir == 0 ? 'I' : 'O');
182 UShort_t nsec = (ir == 0 ? 20 : 40);
183 UShort_t nstr = (ir == 0 ? 512 : 256);
185 for(UShort_t sec =0; sec < nsec; sec++) {
186 for(UShort_t strip = 0; strip < nstr; strip++) {
187 Float_t mult = fESD->Multiplicity(det,ring,sec,strip);
188 //Float_t eta = fESD->Eta(det,ring,sec,strip);
190 if(mult == 0 || mult == AliESDFMD::kInvalidMult) continue;
191 //Particle number cut goes here...
193 //geo->Detector2XYZ(det,ring,sec,strip,x,y,z);
194 // Float_t phi = TMath::ATan2(y,x);
196 // phi = phi+2*TMath::Pi();
198 Float_t phi = pars->GetPhiFromSector(det,ring,sec);
199 Float_t eta = pars->GetEtaFromStrip(det,ring,sec,strip,vertex[2]);
200 //std::cout<<phi<<" "<<phicalc<<std::endl;
201 // Float_t r = TMath::Sqrt(TMath::Power(x,2)+TMath::Power(y,2));
202 // Float_t theta = TMath::ATan2(r,z-vertex[2]);
203 // Float_t etacalc = -1*TMath::Log(TMath::Tan(0.5*theta));
205 // std::cout<<eta<<" "<<etacalc<<std::endl;
208 Float_t m = pars->GetMPV(det,ring,eta);
209 Float_t s = pars->GetSigma(det,ring,eta);
210 //AliFMDParameters* recopars = AliFMDParameters::Instance();
212 Float_t mult_cut = 0.15;//m-2*s;//0.15;//0.2;//m-3*s;// 0.2;//0.01;//m-2*s;//0.2;
215 //mult_cut = (5*recopars->GetPedestalWidth(det,ring,sec,strip))/(recopars->GetPulseGain(det,ring,sec,strip)*recopars->GetDACPerMIP());
217 Float_t nParticles = 0;
218 if(fESD->GetUniqueID() == kTRUE) {
221 if(mult > mult_cut) {
229 Float_t mpv = pars->GetMPV(det,ring,eta);
230 Float_t sigma = pars->GetSigma(det,ring,eta);
231 Float_t alpha = pars->Get2MIPWeight(det,ring,eta);
232 Float_t beta = pars->Get3MIPWeight(det,ring,eta);
234 Float_t sumCor = TMath::Landau(mult,mpv,sigma,kTRUE)+
235 alpha*TMath::Landau(mult,2*mpv+2*sigma*TMath::Log(2),2*sigma,kTRUE)+
236 beta*TMath::Landau(mult,3*mpv+3*sigma*TMath::Log(3),3*sigma,kTRUE);
237 Float_t weight = TMath::Landau(mult,mpv,sigma,kTRUE)+
238 2*alpha*TMath::Landau(mult,2*mpv+2*sigma*TMath::Log(2),2*sigma,kTRUE)+
239 3*beta*TMath::Landau(mult,3*mpv+3*sigma*TMath::Log(3),3*sigma,kTRUE);
242 if(mult > mult_cut) {
243 if(sumCor) nParticles = weight / sumCor;
247 //std::cout<<sumCor<<" "<<weight<<" "<<" "<<mult<<" "<<nParticles<<std::endl;
255 Float_t correction = GetAcceptanceCorrection(ring,strip);
257 //std::cout<<"before "<<correction<<std::endl;
259 correction = correction / fFuncNeg->Eval(eta);
261 correction = correction / fFuncPos->Eval(eta);
263 // std::cout<<correction<<std::endl;
264 if(correction) nParticles = nParticles / correction;
266 hMult->Fill(eta,phi,nParticles);
268 //if(det == 1 && ring =='I' && nParticles >0)
270 // std::cout<<det<<" "<<ring<<" "<<sec<<" "<<strip<<" "<<mult<<std::endl;
281 PostData(0, fOutputList);
285 //_____________________________________________________________________
286 Float_t AliFMDAnalysisTaskDensity::GetAcceptanceCorrection(Char_t ring, UShort_t strip)
288 AliFMDRing fmdring(ring);
290 Float_t rad = fmdring.GetMaxR()-fmdring.GetMinR();
291 Float_t segment = rad / fmdring.GetNStrips();
292 Float_t radius = fmdring.GetMinR() + segment*strip;
294 Float_t basearea1 = 0.5*fmdring.GetBaseStripLength(strip)*TMath::Power(radius,2);
295 Float_t basearea2 = 0.5*fmdring.GetBaseStripLength(strip)*TMath::Power((radius-segment),2);
296 Float_t basearea = basearea1 - basearea2;
298 Float_t area1 = 0.5*fmdring.GetStripLength(strip)*TMath::Power(radius,2);
299 Float_t area2 = 0.5*fmdring.GetStripLength(strip)*TMath::Power((radius-segment),2);
300 Float_t area = area1 - area2;
302 Float_t correction = area/basearea;
306 //_____________________________________________________________________
307 Float_t AliFMDAnalysisTaskDensity::GetPhiFromSector(UShort_t det, Char_t ring, UShort_t sec)
309 Int_t nsec = (ring == 'I' ? 20 : 40);
312 basephi = 1.72787594;
313 if(det == 2 && ring == 'I')
314 basephi = 0.15707963;
315 if(det == 2 && ring == 'O')
316 basephi = 0.078539818;
317 if(det == 3 && ring == 'I')
318 basephi = 2.984513044;
319 if(det == 3 && ring == 'O')
320 basephi = 3.06305289;
322 Float_t step = 2*TMath::Pi() / nsec;
325 phi = basephi - sec*step;
327 phi = basephi + sec*step;
330 phi = phi +2*TMath::Pi();
331 if(phi > 2*TMath::Pi() )
332 phi = phi - 2*TMath::Pi();