2 // This class calculates the exclusive charged particle density
3 // in each for the 5 FMD rings.
5 #include "AliFMDCorrector.h"
10 #include "AliForwardCorrectionManager.h"
17 ClassImp(AliFMDCorrector)
22 //____________________________________________________________________
23 AliFMDCorrector::AliFMDCorrector()
26 fUseSecondaryMap(true),
29 fUseMergingEfficiency(true),
35 //____________________________________________________________________
36 AliFMDCorrector::AliFMDCorrector(const char* title)
37 : TNamed("fmdCorrector", title),
39 fUseSecondaryMap(true),
42 fUseMergingEfficiency(true),
49 fRingHistos.SetName(GetName());
50 fRingHistos.Add(new RingHistos(1, 'I'));
51 fRingHistos.Add(new RingHistos(2, 'I'));
52 fRingHistos.Add(new RingHistos(2, 'O'));
53 fRingHistos.Add(new RingHistos(3, 'I'));
54 fRingHistos.Add(new RingHistos(3, 'O'));
57 //____________________________________________________________________
58 AliFMDCorrector::AliFMDCorrector(const AliFMDCorrector& o)
61 fUseSecondaryMap(o.fUseSecondaryMap),
62 fUseVertexBias(o.fUseVertexBias),
63 fUseAcceptance(o.fUseAcceptance),
64 fUseMergingEfficiency(o.fUseMergingEfficiency),
70 // o Object to copy from
71 TIter next(&o.fRingHistos);
73 while ((obj = next())) fRingHistos.Add(obj);
76 //____________________________________________________________________
77 AliFMDCorrector::~AliFMDCorrector()
85 //____________________________________________________________________
87 AliFMDCorrector::operator=(const AliFMDCorrector& o)
89 // Assignment operator
92 // o Object to assign from
97 fUseSecondaryMap = o.fUseSecondaryMap;
98 fUseVertexBias = o.fUseVertexBias;
99 fUseAcceptance = o.fUseAcceptance;
100 fUseMergingEfficiency = o.fUseMergingEfficiency;
101 TIter next(&o.fRingHistos);
103 while ((obj = next())) fRingHistos.Add(obj);
108 //____________________________________________________________________
110 AliFMDCorrector::Init(const TAxis&)
113 // Initialize this object
116 // etaAxis Eta axis to use
118 if (!fUseSecondaryMap)
119 AliWarning("Secondary maps not used - BE CAREFUL");
121 AliWarning("Vertex bias not used");
123 AliWarning("Acceptance from dead-channels not used");
126 //____________________________________________________________________
127 AliFMDCorrector::RingHistos*
128 AliFMDCorrector::GetRingHistos(UShort_t d, Char_t r) const
131 // Get the ring histogram container
137 // Ring histogram container
141 case 1: idx = 0; break;
142 case 2: idx = 1 + (r == 'I' || r == 'i' ? 0 : 1); break;
143 case 3: idx = 3 + (r == 'I' || r == 'i' ? 0 : 1); break;
145 if (idx < 0 || idx >= fRingHistos.GetEntries()) return 0;
147 return static_cast<RingHistos*>(fRingHistos.At(idx));
150 //____________________________________________________________________
152 AliFMDCorrector::Correct(AliForwardUtil::Histos& hists,
156 // Do the calculations
158 // hists Cache of histograms
164 AliForwardCorrectionManager& fcm = AliForwardCorrectionManager::Instance();
166 UShort_t uvb = vtxbin;
167 for (UShort_t d=1; d<=3; d++) {
168 UShort_t nr = (d == 1 ? 1 : 2);
169 for (UShort_t q=0; q<nr; q++) {
170 Char_t r = (q == 0 ? 'I' : 'O');
171 TH2D* h = hists.Get(d,r);
172 RingHistos* rh = GetRingHistos(d,r);
174 if (fUseSecondaryMap) {
175 TH2D* bg = fcm.GetSecondaryMap()->GetCorrection(d, r, uvb);
177 AliWarning(Form("No secondary correction for FMDM%d%c in vertex bin %d",
181 // Divide by primary/total ratio
184 if (fUseVertexBias) {
185 TH2D* ef = fcm.GetVertexBias()->GetCorrection(r, uvb);
187 AliWarning(Form("No event %s vertex bias correction in vertex bin %d",
188 (r == 'I' || r == 'i' ? "inner" : "outer"), uvb));
191 // Divide by the event selection efficiency
194 if (fUseAcceptance) {
195 TH2D* ac = fcm.GetAcceptance()->GetCorrection(d, r, uvb);
197 AliWarning(Form("No acceptance correction for FMD%d%c in vertex bin %d",
201 // Divide by the acceptance correction
209 if (fUseMergingEfficiency) {
210 if (!fcm.GetMergingEfficiency()) {
211 AliWarning("No merging efficiencies");
214 TH1D* sf = fcm.GetMergingEfficiency()->GetCorrection(d,r,uvb);
215 if (!fcm.GetMergingEfficiency()->GetCorrection(d,r,uvb)) {
216 AliWarning(Form("No merging efficiency for FMD%d%c at vertex bin %d",
222 for (Int_t ieta = 1; ieta <= h->GetNbinsX(); ieta++) {
223 Float_t c = sf->GetBinContent(ieta);
224 Float_t ec = sf->GetBinError(ieta);
226 if (c == 0) continue;
228 for (Int_t iphi = 1; iphi <= h->GetNbinsY(); iphi++) {
229 Double_t m = h->GetBinContent(ieta, iphi) / c;
230 Double_t em = h->GetBinError(ieta, iphi);
232 Double_t e = TMath::Sqrt(em * em + (m * ec) * (m * ec));
234 h->SetBinContent(ieta,iphi,m);
235 h->SetBinError(ieta,iphi,e);
239 rh->fDensity->Add(h);
246 //____________________________________________________________________
248 AliFMDCorrector::ScaleHistograms(TList* dir, Int_t nEvents)
251 // Scale the histograms to the total number of events
253 // dir Where the output is stored
254 // nEvents Number of events
256 if (nEvents <= 0) return;
257 TList* d = static_cast<TList*>(dir->FindObject(GetName()));
260 TIter next(&fRingHistos);
262 while ((o = static_cast<RingHistos*>(next())))
263 o->ScaleHistograms(d, nEvents);
265 //____________________________________________________________________
267 AliFMDCorrector::DefineOutput(TList* dir)
269 TList* d = new TList;
270 d->SetName(GetName());
272 TIter next(&fRingHistos);
274 while ((o = static_cast<RingHistos*>(next()))) {
279 //____________________________________________________________________
281 AliFMDCorrector::Print(Option_t* /* option */) const
288 char ind[gROOT->GetDirLevel()+1];
289 for (Int_t i = 0; i < gROOT->GetDirLevel(); i++) ind[i] = ' ';
290 ind[gROOT->GetDirLevel()] = '\0';
291 std::cout << ind << "AliFMDCorrector: " << GetName() << "\n"
293 << ind << " Use secondary maps: " << fUseSecondaryMap << "\n"
294 << ind << " Use vertex bias: " << fUseVertexBias << "\n"
295 << ind << " Use acceptance: " << fUseAcceptance << "\n"
296 << ind << " Use merging efficiency: " << fUseMergingEfficiency
300 //====================================================================
301 AliFMDCorrector::RingHistos::RingHistos()
302 : AliForwardUtil::RingHistos(),
310 //____________________________________________________________________
311 AliFMDCorrector::RingHistos::RingHistos(UShort_t d, Char_t r)
312 : AliForwardUtil::RingHistos(d,r),
321 fDensity = new TH2D(Form("FMD%d%c_Primary_Density", d, r),
322 Form("in FMD%d%c", d, r),
323 200, -4, 6, (r == 'I' || r == 'i' ? 20 : 40),
325 fDensity->SetDirectory(0);
326 fDensity->SetXTitle("#eta");
327 fDensity->SetYTitle("#phi [radians]");
328 fDensity->SetZTitle("Primary N_{ch} density");
330 //____________________________________________________________________
331 AliFMDCorrector::RingHistos::RingHistos(const RingHistos& o)
332 : AliForwardUtil::RingHistos(o),
338 // o Object to copy from
342 //____________________________________________________________________
343 AliFMDCorrector::RingHistos&
344 AliFMDCorrector::RingHistos::operator=(const RingHistos& o)
347 // Assignment operator
349 // o Object to assign from
354 AliForwardUtil::RingHistos::operator=(o);
356 if (fDensity) delete fDensity;
358 fDensity = static_cast<TH2D*>(o.fDensity->Clone());
362 //____________________________________________________________________
363 AliFMDCorrector::RingHistos::~RingHistos()
368 if (fDensity) delete fDensity;
371 //____________________________________________________________________
373 AliFMDCorrector::RingHistos::Output(TList* dir)
378 // dir Where to put it
380 TList* d = DefineOutputList(dir);
384 //____________________________________________________________________
386 AliFMDCorrector::RingHistos::ScaleHistograms(TList* dir, Int_t nEvents)
389 // Scale the histograms to the total number of events
391 // dir where the output is stored
392 // nEvents Number of events
394 TList* l = GetOutputList(dir);
397 TH1* density = GetOutputHist(l,Form("%s_Primary_Density", fName.Data()));
398 if (density) density->Scale(1./nEvents);
401 //____________________________________________________________________