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[u/mrichter/AliRoot.git] / PWG0 / dNdPt / AliPtResolAnalysis.cxx
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fc98fbb5 1/**************************************************************************\r
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *\r
3 * *\r
4 * Author: The ALICE Off-line Project. *\r
5 * Contributors are mentioned in the code where appropriate. *\r
6 * *\r
7 * Permission to use, copy, modify and distribute this software and its *\r
8 * documentation strictly for non-commercial purposes is hereby granted *\r
9 * without fee, provided that the above copyright notice appears in all *\r
10 * copies and that both the copyright notice and this permission notice *\r
11 * appear in the supporting documentation. The authors make no claims *\r
12 * about the suitability of this software for any purpose. It is *\r
13 * provided "as is" without express or implied warranty. *\r
14 **************************************************************************/\r
15//------------------------------------------------------------------------------\r
16// AliPtResolAnalysis class. \r
17// \r
18// a. functionality:\r
19// - fills analysis control histograms\r
20//\r
21// b. data members:\r
22// - control histograms\r
23//\r
24// Author: J.Otwinowski 04/11/2008 \r
25//------------------------------------------------------------------------------\r
26\r
27#include "TH1.h"\r
28#include "TH2.h"\r
29#include "TCanvas.h"\r
30#include "THnSparse.h"\r
31\r
32#include "AliHeader.h" \r
33#include "AliInputEventHandler.h" \r
34#include "AliAnalysisManager.h" \r
35#include "AliGenEventHeader.h" \r
36#include "AliStack.h" \r
37#include "AliESDEvent.h" \r
38#include "AliMCEvent.h" \r
39#include "AliESDtrackCuts.h" \r
40#include "AliLog.h" \r
41#include "AliMultiplicity.h"\r
42#include "AliTracker.h"\r
43\r
44#include "AlidNdPtEventCuts.h"\r
45#include "AlidNdPtAcceptanceCuts.h"\r
46#include "AliPhysicsSelection.h"\r
47#include "AliTriggerAnalysis.h"\r
48\r
49#include "AliPWG0Helper.h"\r
50#include "AlidNdPtHelper.h"\r
51#include "AliPtResolAnalysis.h"\r
52\r
53using namespace std;\r
54\r
55ClassImp(AliPtResolAnalysis)\r
56\r
57//_____________________________________________________________________________\r
58 AliPtResolAnalysis::AliPtResolAnalysis(): AlidNdPt(),\r
59 fAnalysisFolder(0),\r
d976c06f 60 fTrackParamHist(0),\r
61 fTrackParamHist2(0)\r
fc98fbb5 62{\r
63 // default constructor\r
64 Init();\r
65}\r
66\r
67//_____________________________________________________________________________\r
68AliPtResolAnalysis::AliPtResolAnalysis(Char_t* name, Char_t* title): AlidNdPt(name,title),\r
69 fAnalysisFolder(0),\r
d976c06f 70 fTrackParamHist(0),\r
71 fTrackParamHist2(0)\r
fc98fbb5 72{\r
73 Init();\r
74}\r
75\r
76//_____________________________________________________________________________\r
77AliPtResolAnalysis::~AliPtResolAnalysis() {\r
78 //\r
79 // destructor\r
80 //\r
81 if(fAnalysisFolder) delete fAnalysisFolder; fAnalysisFolder=0;\r
82 if(fTrackParamHist) delete fTrackParamHist; fTrackParamHist=0;\r
d976c06f 83 if(fTrackParamHist2) delete fTrackParamHist2; fTrackParamHist2=0;\r
fc98fbb5 84}\r
85\r
86//_____________________________________________________________________________\r
87void AliPtResolAnalysis::Init(){\r
88 //\r
89 // Generic histograms to be corrected\r
90 //\r
91 //1/pT:#sigma(1/pT)\r
92 Int_t binsTrackParamHist[2]={400,300};\r
93 Double_t minTrackParamHist[2]={0,0}; \r
94 Double_t maxTrackParamHist[2]={1,0.015};\r
95\r
96 fTrackParamHist = new THnSparseF("fTrackParamHist","1/pT:#sigma(1/pT)",2,binsTrackParamHist,minTrackParamHist,maxTrackParamHist);\r
97 fTrackParamHist->GetAxis(0)->SetTitle("1/pT (GeV/c)^{-1}");\r
d976c06f 98 fTrackParamHist->GetAxis(1)->SetTitle("#sigma(1/pT)");\r
fc98fbb5 99 fTrackParamHist->Sumw2();\r
100 \r
d976c06f 101 //pt:sigma(1/pT)*pT\r
102 const Int_t ptNbins = 73;\r
103 Double_t bins[74] = {0.0, 0.05, 0.1, 0.15, 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.55, 0.6, 0.65, 0.7, 0.75, 0.8, 0.85, 0.9, 0.95, 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2.0, 2.2, 2.4, 2.6, 2.8, 3.0, 3.2, 3.4, 3.6, 3.8, 4.0, 4.5, 5.0, 5.5, 6.0, 6.5, 7.0, 8.0, 9.0, 10.0, 11.0, 12.0, 13.0, 14.0, 15.0, 16.0, 18.0, 20.0, 22.0, 24.0, 26.0, 28.0, 30.0, 32.0, 34.0, 36.0, 40.0, 45.0, 50.0, 60.0, 70.0, 80.0, 90.0, 100.0 };\r
104\r
105 Int_t binsTrackParamHist2[2]={ptNbins,200};\r
106 Double_t minTrackParamHist2[2]={0,0}; \r
107 Double_t maxTrackParamHist2[2]={100,0.2};\r
108\r
109 fTrackParamHist2 = new THnSparseF("fTrackParamHist2","pT:#sigma(1/pT)*pT",2,binsTrackParamHist2,minTrackParamHist2,maxTrackParamHist2);\r
110 fTrackParamHist2->SetBinEdges(0,bins);\r
111 fTrackParamHist2->GetAxis(0)->SetTitle("pT (GeV/c)");\r
112 fTrackParamHist2->GetAxis(1)->SetTitle("#sigma(1/pT)*pT");\r
113 fTrackParamHist2->Sumw2();\r
114\r
fc98fbb5 115 // init folder\r
116 fAnalysisFolder = CreateFolder("folderdNdPt","Analysis dNdPt Folder");\r
fc98fbb5 117}\r
118\r
119//_____________________________________________________________________________\r
120void AliPtResolAnalysis::Process(AliESDEvent *const esdEvent, AliMCEvent *const mcEvent)\r
121{\r
122 //\r
123 // Process real and/or simulated events\r
124 //\r
125 if(!esdEvent) {\r
126 AliDebug(AliLog::kError, "esdEvent not available");\r
127 return;\r
128 }\r
129\r
130 // get selection cuts\r
131 AlidNdPtEventCuts *evtCuts = GetEventCuts(); \r
132 AlidNdPtAcceptanceCuts *accCuts = GetAcceptanceCuts(); \r
133 AliESDtrackCuts *esdTrackCuts = GetTrackCuts(); \r
134\r
135 if(!evtCuts || !accCuts || !esdTrackCuts) {\r
136 AliDebug(AliLog::kError, "cuts not available");\r
137 return;\r
138 }\r
139\r
140 // trigger selection\r
141 Bool_t isEventTriggered = kTRUE;\r
142 AliPhysicsSelection *physicsSelection = NULL;\r
143 AliTriggerAnalysis* triggerAnalysis = NULL;\r
144\r
145 // \r
146 AliInputEventHandler* inputHandler = (AliInputEventHandler*) AliAnalysisManager::GetAnalysisManager()->GetInputEventHandler();\r
147 if (!inputHandler)\r
148 {\r
149 Printf("ERROR: Could not receive input handler");\r
150 return;\r
151 }\r
152\r
153 if(evtCuts->IsTriggerRequired()) \r
154 {\r
155 // always MB\r
156 isEventTriggered = inputHandler->IsEventSelected() & AliVEvent::kMB;\r
157\r
158 physicsSelection = static_cast<AliPhysicsSelection*> (inputHandler->GetEventSelection());\r
159 if(!physicsSelection) return;\r
160 //SetPhysicsTriggerSelection(physicsSelection);\r
161\r
162 if (isEventTriggered && (GetTrigger() == AliTriggerAnalysis::kV0AND)) {\r
163 // set trigger (V0AND)\r
164 triggerAnalysis = physicsSelection->GetTriggerAnalysis();\r
165 if(!triggerAnalysis) return;\r
166 isEventTriggered = triggerAnalysis->IsOfflineTriggerFired(esdEvent, GetTrigger());\r
167 }\r
168\r
169 // get reconstructed vertex \r
170 const AliESDVertex* vtxESD = 0; \r
171 Bool_t isRecVertex = kFALSE;\r
172 if(evtCuts->IsRecVertexRequired()) \r
173 {\r
174 Bool_t bRedoTPCVertex = evtCuts->IsRedoTPCVertex();\r
175 Bool_t bUseConstraints = evtCuts->IsUseBeamSpotConstraint();\r
176 vtxESD = AlidNdPtHelper::GetVertex(esdEvent,evtCuts,accCuts,esdTrackCuts,GetAnalysisMode(),kFALSE,bRedoTPCVertex,bUseConstraints); \r
177 isRecVertex = AlidNdPtHelper::TestRecVertex(vtxESD, esdEvent->GetPrimaryVertexSPD(), GetAnalysisMode(), kFALSE);\r
178 }\r
179\r
180 Bool_t isEventOK = evtCuts->AcceptEvent(esdEvent,mcEvent,vtxESD) && isRecVertex; \r
181 //printf("isEventOK %d, isEventTriggered %d \n",isEventOK, isEventTriggered);\r
182 //printf("GetAnalysisMode() %d \n",GetAnalysisMode());\r
183\r
184 //\r
185 TObjArray *allChargedTracks=0;\r
186 // check event cuts\r
187 if(isEventOK && isEventTriggered)\r
188 {\r
189 // get all charged tracks\r
190 allChargedTracks = AlidNdPtHelper::GetAllChargedTracks(esdEvent,GetAnalysisMode());\r
191 if(!allChargedTracks) return;\r
192\r
193 Int_t entries = allChargedTracks->GetEntries();\r
194 //printf("entries %d \n",entries);\r
195\r
196 // fill histograms\r
197 for(Int_t i=0; i<entries;++i) \r
198 {\r
199 AliESDtrack *track = (AliESDtrack*)allChargedTracks->At(i);\r
200 if(!track) continue;\r
201 if(track->Charge()==0) continue;\r
202\r
203 // only postive charged \r
204 if(GetParticleMode() == AlidNdPtHelper::kPlus && track->Charge() < 0) \r
205 continue;\r
206 \r
207 // only negative charged \r
208 if(GetParticleMode() == AlidNdPtHelper::kMinus && track->Charge() > 0) \r
209 continue;\r
210\r
211 if(esdTrackCuts->AcceptTrack(track)) \r
212 {\r
213 if(accCuts->AcceptTrack(track)) \r
214 {\r
215 //Double_t x, par[5], cov[15];\r
216 //track->GetExternalParameters(x, p);\r
217 //track->GetExternalCovariance(cov);\r
218\r
d976c06f 219 Double_t v1[2] = {track->OneOverPt(),TMath::Sqrt(track->GetSigma1Pt2())};\r
220 fTrackParamHist->Fill(v1);\r
221\r
222 Double_t v2[2] = {track->Pt(),track->Pt()*TMath::Sqrt(track->GetSigma1Pt2())};\r
223 fTrackParamHist2->Fill(v2);\r
fc98fbb5 224 }\r
225 } \r
226 }\r
227 }\r
228 }\r
229}\r
230\r
231//_____________________________________________________________________________\r
232Long64_t AliPtResolAnalysis::Merge(TCollection* const list) \r
233{\r
234 // Merge list of objects (needed by PROOF)\r
235\r
236 if (!list)\r
237 return 0;\r
238\r
239 if (list->IsEmpty())\r
240 return 1;\r
241\r
242 TIterator* iter = list->MakeIterator();\r
243 TObject* obj = 0;\r
244\r
245 //\r
246 //TList *collPhysSelection = new TList;\r
247\r
248 // collection of generated histograms\r
249\r
250 Int_t count=0;\r
251 while((obj = iter->Next()) != 0) {\r
252 AliPtResolAnalysis* entry = dynamic_cast<AliPtResolAnalysis*>(obj);\r
253 if (entry == 0) continue; \r
254 \r
255 //\r
256 fTrackParamHist->Add(entry->fTrackParamHist);\r
d976c06f 257 fTrackParamHist2->Add(entry->fTrackParamHist2);\r
fc98fbb5 258 }\r
259\r
260return count;\r
261}\r
262\r
263//_____________________________________________________________________________\r
264void AliPtResolAnalysis::Analyse() \r
265{\r
266 // Analyse histograms\r
267 //\r
268 TH1::AddDirectory(kFALSE);\r
269 TObjArray *aFolderObj = new TObjArray;\r
270 \r
271 //\r
272 // Reconstructed event vertex\r
273 //\r
274 \r
275 // export objects to analysis folder\r
276 fAnalysisFolder = ExportToFolder(aFolderObj);\r
277\r
278 // delete only TObjArray\r
279 if(aFolderObj) delete aFolderObj;\r
280}\r
281\r
282//_____________________________________________________________________________\r
283TFolder* AliPtResolAnalysis::ExportToFolder(TObjArray * const array) \r
284{\r
285 // recreate folder avery time and export objects to new one\r
286 //\r
287 AliPtResolAnalysis * comp=this;\r
288 TFolder *folder = comp->GetAnalysisFolder();\r
289\r
290 TString name, title;\r
291 TFolder *newFolder = 0;\r
292 Int_t i = 0;\r
293 Int_t size = array->GetSize();\r
294\r
295 if(folder) { \r
296 // get name and title from old folder\r
297 name = folder->GetName(); \r
298 title = folder->GetTitle(); \r
299\r
300 // delete old one\r
301 delete folder;\r
302\r
303 // create new one\r
304 newFolder = CreateFolder(name.Data(),title.Data());\r
305 newFolder->SetOwner();\r
306\r
307 // add objects to folder\r
308 while(i < size) {\r
309 newFolder->Add(array->At(i));\r
310 i++;\r
311 }\r
312 }\r
313\r
314return newFolder;\r
315}\r
316\r
317//_____________________________________________________________________________\r
318TFolder* AliPtResolAnalysis::CreateFolder(TString name,TString title) { \r
319// create folder for analysed histograms\r
320//\r
321TFolder *folder = 0;\r
322 folder = new TFolder(name.Data(),title.Data());\r
323\r
324 return folder;\r
325}\r