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da97a08a | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
16 | // | |
17 | // Analysis task for Kinematic filtering | |
18 | // Fill AODtrackMC tracks from Kinematic stack | |
19 | // | |
20 | ||
21 | #include <TChain.h> | |
22 | #include <TFile.h> | |
23 | #include "TParticle.h" | |
24 | #include "TString.h" | |
25 | ||
26 | #include "AliAnalysisTaskMCParticleFilter.h" | |
27 | #include "AliAnalysisManager.h" | |
28 | #include "AliAnalysisFilter.h" | |
29 | #include "AliHeader.h" | |
30 | #include "AliStack.h" | |
31 | #include "AliMCEvent.h" | |
32 | #include "AliMCEventHandler.h" | |
33 | #include "AliAODEvent.h" | |
34 | #include "AliAODHeader.h" | |
35 | #include "AliAODHandler.h" | |
36 | #include "AliAODVertex.h" | |
37 | #include "AliAODMCParticle.h" | |
38 | ||
39 | ||
40 | #include "AliLog.h" | |
41 | ||
42 | ClassImp(AliAnalysisTaskMCParticleFilter) | |
43 | ||
44 | //////////////////////////////////////////////////////////////////////// | |
45 | ||
46 | //____________________________________________________________________ | |
47 | AliAnalysisTaskMCParticleFilter::AliAnalysisTaskMCParticleFilter(): | |
48 | AliAnalysisTaskSE(), | |
49 | fTrackFilterMother(0x0) | |
50 | { | |
51 | // Default constructor | |
52 | } | |
53 | ||
54 | //____________________________________________________________________ | |
55 | AliAnalysisTaskMCParticleFilter::AliAnalysisTaskMCParticleFilter(const char* name): | |
56 | AliAnalysisTaskSE(name), | |
57 | fTrackFilterMother(0x0) | |
58 | { | |
59 | // Default constructor | |
60 | } | |
61 | ||
62 | ||
63 | //____________________________________________________________________ | |
64 | AliAnalysisTaskMCParticleFilter::AliAnalysisTaskMCParticleFilter(const AliAnalysisTaskMCParticleFilter& obj): | |
65 | AliAnalysisTaskSE(obj), | |
66 | fTrackFilterMother(obj.fTrackFilterMother) | |
67 | { | |
68 | // Copy constructor | |
69 | } | |
70 | ||
71 | //____________________________________________________________________ | |
72 | AliAnalysisTaskMCParticleFilter::~AliAnalysisTaskMCParticleFilter() | |
73 | { | |
74 | // if( fTrackFilterMother ) delete fTrackFilterMother; | |
75 | } | |
76 | ||
77 | ||
78 | //____________________________________________________________________ | |
79 | AliAnalysisTaskMCParticleFilter& AliAnalysisTaskMCParticleFilter::operator=(const AliAnalysisTaskMCParticleFilter& other) | |
80 | { | |
81 | // Assignment | |
82 | if(this!=&other) { | |
83 | AliAnalysisTaskSE::operator=(other); | |
84 | fTrackFilterMother = other.fTrackFilterMother; | |
85 | } | |
86 | return *this; | |
87 | } | |
88 | ||
89 | //____________________________________________________________________ | |
90 | void AliAnalysisTaskMCParticleFilter::UserCreateOutputObjects() | |
91 | { | |
92 | // Create the output container | |
93 | if (OutputTree()&&fTrackFilterMother) | |
94 | OutputTree()->GetUserInfo()->Add(fTrackFilterMother); | |
95 | // how is this is reset cleared in the UserExec.... | |
96 | // Can this be handled by the framework? | |
97 | TClonesArray *tca = new TClonesArray("AliAODMCParticle", 0); | |
98 | tca->SetName(AliAODMCParticle::StdBranchName()); | |
99 | AddAODBranch("TClonesArray",&tca); | |
100 | AliMCEventHandler *mcH = (AliMCEventHandler*) ((AliAnalysisManager::GetAnalysisManager())->GetMCtruthEventHandler()); | |
101 | ||
102 | AliAODHandler *aodH = dynamic_cast<AliAODHandler*> ((AliAnalysisManager::GetAnalysisManager())->GetOutputEventHandler()); | |
103 | if(!aodH){ | |
104 | Printf("%s:&d Could not get AODHandler",(char*)__FILE__,__LINE__); | |
105 | return; | |
106 | } | |
107 | aodH->SetMCEventHandler(mcH); | |
108 | // TODO ADD MC VERTEX | |
109 | ||
110 | } | |
111 | ||
112 | //____________________________________________________________________ | |
113 | void AliAnalysisTaskMCParticleFilter::UserExec(Option_t */*option*/) | |
114 | { | |
115 | // Execute analysis for current event | |
116 | // | |
117 | ||
118 | // Fill AOD tracks from Kinematic stack | |
119 | ||
120 | // get AliAOD Event | |
121 | AliAODEvent* aod = AODEvent(); | |
122 | if (!aod) { | |
123 | AliWarning("No Output Handler connected, doing nothing !") ; | |
124 | return; | |
125 | } | |
126 | ||
127 | AliMCEventHandler *mcH = (AliMCEventHandler*) ((AliAnalysisManager::GetAnalysisManager())->GetMCtruthEventHandler()); | |
128 | if(!mcH){ | |
129 | AliWarning("No MC handler Found"); | |
130 | return; | |
131 | } | |
132 | ||
133 | ||
134 | // fetch the output | |
135 | // Fill control histos | |
136 | ||
137 | // tmp array for holding the mctracks | |
138 | // need to set mother and duagther __before__ | |
139 | // filling in the tree | |
140 | ||
141 | AliMCEvent *mcE = MCEvent(); | |
142 | ||
143 | if(!mcE){ | |
144 | AliWarning("No MC event Found"); | |
145 | return; | |
146 | } | |
147 | ||
148 | AliStack* stack = mcE->Stack(); | |
149 | Int_t np = mcE->GetNumberOfTracks(); | |
150 | Int_t nprim = stack->GetNprimary(); | |
151 | // TODO ADD MC VERTEX | |
152 | ||
153 | // We take all real primaries | |
154 | ||
155 | ||
156 | ||
157 | Int_t j=0; | |
158 | for (Int_t ip = 0; ip < np; ip++){ | |
159 | AliMCParticle* mcpart = mcE->GetTrack(ip); | |
160 | TParticle* part = mcpart->Particle(); | |
161 | ||
162 | Float_t xv = part->Vx(); | |
163 | Float_t yv = part->Vy(); | |
164 | Float_t zv = part->Vz(); | |
165 | Float_t rv = TMath::Sqrt(xv * xv + yv * yv); | |
166 | ||
167 | Bool_t write = kFALSE; | |
168 | Int_t flag = 0; | |
169 | ||
170 | ||
171 | if (ip < nprim) { | |
172 | // Select the primary event | |
173 | write = kTRUE; | |
174 | } else if (part->GetUniqueID() == 4) { | |
175 | // Particles from decay | |
176 | // Check that the decay chain ends at a primary particle | |
177 | TParticle* mother = part; | |
178 | Int_t imo = part->GetFirstMother(); | |
179 | while((imo >= nprim) && (mother->GetUniqueID() == 4)) { | |
180 | mother = mcE->Stack()->Particle(imo); | |
181 | imo = mother->GetFirstMother(); | |
182 | } | |
183 | // Select according to pseudorapidity and production point | |
184 | if (imo < nprim && Select(mother, rv, zv)) | |
185 | write = kTRUE; | |
186 | } else if (part->GetUniqueID() == 5) { | |
187 | // Now look for pair production | |
188 | continue; | |
189 | Int_t imo = part->GetFirstMother(); | |
190 | if (imo < nprim) { | |
191 | // Select, if the gamma is a primary | |
192 | write = kTRUE; | |
193 | } else { | |
194 | // Check if the gamma comes from the decay chain of a primary particle | |
195 | TParticle* mother = mcE->Stack()->Particle(imo); | |
196 | imo = mother->GetFirstMother(); | |
197 | while((imo >= nprim) && (mother->GetUniqueID() == 4)) { | |
198 | mother = mcE->Stack()->Particle(imo); | |
199 | imo = mother->GetFirstMother(); | |
200 | } | |
201 | // Select according to pseudorapidity and production point | |
202 | if (imo < nprim && Select(mother, rv, zv)) | |
203 | write = kTRUE; | |
204 | } | |
205 | } | |
206 | /* | |
207 | else if (part->GetUniqueID() == 13){ | |
208 | // Evaporation | |
209 | // Check that we end at a primary particle | |
210 | TParticle* mother = part; | |
211 | Int_t imo = part->GetFirstMother(); | |
212 | while((imo >= nprim) && ((mother->GetUniqueID() == 4 ) || ( mother->GetUniqueID() == 13))) { | |
213 | mother = mcE->Stack()->Particle(imo); | |
214 | imo = mother->GetFirstMother(); | |
215 | } | |
216 | // Select according to pseudorapidity and production point | |
217 | if (imo < nprim && Select(mother, rv, zv)) | |
218 | write = kTRUE; | |
219 | } | |
220 | */ | |
221 | if (write) { | |
222 | if(mcH)mcH->SelectParticle(ip); | |
223 | j++; | |
224 | } | |
225 | } | |
226 | ||
227 | return; | |
228 | } | |
229 | ||
230 | Bool_t AliAnalysisTaskMCParticleFilter::Select(TParticle* part, Float_t rv, Float_t zv) | |
231 | { | |
232 | // Selection accoring to eta of the mother and production point | |
233 | // This has to be refined !!!!!! | |
234 | ||
235 | // Esp if we don't have collisison in the central barrel but e.g. beam gas | |
236 | // return kTRUE; | |
237 | ||
238 | Float_t eta = part->Eta(); | |
239 | ||
240 | // central barrel consider everything in the ITS... | |
241 | // large eta window for smeared vertex and SPD acceptance (2 at z = 0) | |
242 | // larger for V0s in the TPC | |
243 | // if (TMath::Abs(eta) < 2.5 && rv < 250. && TMath::Abs(zv)<255)return kTRUE; | |
244 | ||
245 | // Andreas' Cuts | |
246 | if (TMath::Abs(eta) < 1. && rv < 170)return kTRUE; | |
247 | ||
248 | // Muon arm | |
249 | if(eta > -4.2 && eta < -2.3 && zv > -500.)return kTRUE; // Muon arms | |
250 | ||
251 | // PMD acceptance 2.3 <= eta < = 3.5 | |
252 | // if(eta>2.0&&eta<3.7)return kTRUE; | |
253 | ||
254 | return kFALSE; | |
255 | ||
256 | } | |
257 |