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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" | |
dce1b636 | 35 | #include "AliAODMCHeader.h" |
da97a08a | 36 | #include "AliAODHandler.h" |
37 | #include "AliAODVertex.h" | |
38 | #include "AliAODMCParticle.h" | |
39 | ||
40 | ||
41 | #include "AliLog.h" | |
42 | ||
43 | ClassImp(AliAnalysisTaskMCParticleFilter) | |
44 | ||
45 | //////////////////////////////////////////////////////////////////////// | |
46 | ||
47 | //____________________________________________________________________ | |
48 | AliAnalysisTaskMCParticleFilter::AliAnalysisTaskMCParticleFilter(): | |
49 | AliAnalysisTaskSE(), | |
50 | fTrackFilterMother(0x0) | |
51 | { | |
52 | // Default constructor | |
53 | } | |
54 | ||
55 | //____________________________________________________________________ | |
56 | AliAnalysisTaskMCParticleFilter::AliAnalysisTaskMCParticleFilter(const char* name): | |
57 | AliAnalysisTaskSE(name), | |
58 | fTrackFilterMother(0x0) | |
59 | { | |
60 | // Default constructor | |
61 | } | |
62 | ||
63 | ||
64 | //____________________________________________________________________ | |
65 | AliAnalysisTaskMCParticleFilter::AliAnalysisTaskMCParticleFilter(const AliAnalysisTaskMCParticleFilter& obj): | |
66 | AliAnalysisTaskSE(obj), | |
67 | fTrackFilterMother(obj.fTrackFilterMother) | |
68 | { | |
69 | // Copy constructor | |
70 | } | |
71 | ||
72 | //____________________________________________________________________ | |
73 | AliAnalysisTaskMCParticleFilter::~AliAnalysisTaskMCParticleFilter() | |
74 | { | |
75 | // if( fTrackFilterMother ) delete fTrackFilterMother; | |
76 | } | |
77 | ||
78 | ||
79 | //____________________________________________________________________ | |
80 | AliAnalysisTaskMCParticleFilter& AliAnalysisTaskMCParticleFilter::operator=(const AliAnalysisTaskMCParticleFilter& other) | |
81 | { | |
82 | // Assignment | |
83 | if(this!=&other) { | |
84 | AliAnalysisTaskSE::operator=(other); | |
85 | fTrackFilterMother = other.fTrackFilterMother; | |
86 | } | |
87 | return *this; | |
88 | } | |
89 | ||
90 | //____________________________________________________________________ | |
91 | void AliAnalysisTaskMCParticleFilter::UserCreateOutputObjects() | |
92 | { | |
93 | // Create the output container | |
94 | if (OutputTree()&&fTrackFilterMother) | |
95 | OutputTree()->GetUserInfo()->Add(fTrackFilterMother); | |
d2740fba | 96 | |
97 | // this part is mainly needed to set the MCEventHandler | |
98 | // to the AODHandler, this will not be needed when | |
99 | // AODHandler goes to ANALYSISalice | |
100 | // setting in the steering macro will not work on proof :( | |
101 | // so we have to do it in a task | |
102 | ||
103 | // the branch booking can also go into the AODHandler then | |
104 | ||
dce1b636 | 105 | |
106 | // mcparticles | |
da97a08a | 107 | TClonesArray *tca = new TClonesArray("AliAODMCParticle", 0); |
108 | tca->SetName(AliAODMCParticle::StdBranchName()); | |
109 | AddAODBranch("TClonesArray",&tca); | |
da97a08a | 110 | |
dce1b636 | 111 | // MC header... |
112 | AliAODMCHeader *mcHeader = new AliAODMCHeader(); | |
113 | Printf("AODMCHeader %p",mcHeader); | |
114 | Printf("AODMCHeader ** %p",&mcHeader); | |
115 | mcHeader->SetName(AliAODMCHeader::StdBranchName()); | |
116 | AddAODBranch("AliAODMCHeader",&mcHeader); | |
117 | ||
118 | ||
119 | ||
120 | AliMCEventHandler *mcH = (AliMCEventHandler*) ((AliAnalysisManager::GetAnalysisManager())->GetMCtruthEventHandler()); | |
da97a08a | 121 | AliAODHandler *aodH = dynamic_cast<AliAODHandler*> ((AliAnalysisManager::GetAnalysisManager())->GetOutputEventHandler()); |
122 | if(!aodH){ | |
123 | Printf("%s:&d Could not get AODHandler",(char*)__FILE__,__LINE__); | |
124 | return; | |
125 | } | |
126 | aodH->SetMCEventHandler(mcH); | |
dce1b636 | 127 | |
da97a08a | 128 | |
129 | } | |
130 | ||
131 | //____________________________________________________________________ | |
132 | void AliAnalysisTaskMCParticleFilter::UserExec(Option_t */*option*/) | |
133 | { | |
134 | // Execute analysis for current event | |
135 | // | |
136 | ||
137 | // Fill AOD tracks from Kinematic stack | |
138 | ||
139 | // get AliAOD Event | |
140 | AliAODEvent* aod = AODEvent(); | |
141 | if (!aod) { | |
142 | AliWarning("No Output Handler connected, doing nothing !") ; | |
143 | return; | |
144 | } | |
145 | ||
146 | AliMCEventHandler *mcH = (AliMCEventHandler*) ((AliAnalysisManager::GetAnalysisManager())->GetMCtruthEventHandler()); | |
147 | if(!mcH){ | |
148 | AliWarning("No MC handler Found"); | |
149 | return; | |
150 | } | |
151 | ||
152 | ||
153 | // fetch the output | |
154 | // Fill control histos | |
155 | ||
156 | // tmp array for holding the mctracks | |
157 | // need to set mother and duagther __before__ | |
158 | // filling in the tree | |
159 | ||
160 | AliMCEvent *mcE = MCEvent(); | |
161 | ||
162 | if(!mcE){ | |
163 | AliWarning("No MC event Found"); | |
164 | return; | |
165 | } | |
166 | ||
167 | AliStack* stack = mcE->Stack(); | |
168 | Int_t np = mcE->GetNumberOfTracks(); | |
169 | Int_t nprim = stack->GetNprimary(); | |
170 | // TODO ADD MC VERTEX | |
171 | ||
172 | // We take all real primaries | |
173 | ||
174 | ||
175 | ||
176 | Int_t j=0; | |
177 | for (Int_t ip = 0; ip < np; ip++){ | |
178 | AliMCParticle* mcpart = mcE->GetTrack(ip); | |
179 | TParticle* part = mcpart->Particle(); | |
180 | ||
181 | Float_t xv = part->Vx(); | |
182 | Float_t yv = part->Vy(); | |
183 | Float_t zv = part->Vz(); | |
184 | Float_t rv = TMath::Sqrt(xv * xv + yv * yv); | |
185 | ||
186 | Bool_t write = kFALSE; | |
da97a08a | 187 | |
da97a08a | 188 | if (ip < nprim) { |
189 | // Select the primary event | |
190 | write = kTRUE; | |
191 | } else if (part->GetUniqueID() == 4) { | |
192 | // Particles from decay | |
193 | // Check that the decay chain ends at a primary particle | |
194 | TParticle* mother = part; | |
195 | Int_t imo = part->GetFirstMother(); | |
196 | while((imo >= nprim) && (mother->GetUniqueID() == 4)) { | |
197 | mother = mcE->Stack()->Particle(imo); | |
198 | imo = mother->GetFirstMother(); | |
199 | } | |
200 | // Select according to pseudorapidity and production point | |
201 | if (imo < nprim && Select(mother, rv, zv)) | |
202 | write = kTRUE; | |
203 | } else if (part->GetUniqueID() == 5) { | |
204 | // Now look for pair production | |
205 | continue; | |
206 | Int_t imo = part->GetFirstMother(); | |
207 | if (imo < nprim) { | |
208 | // Select, if the gamma is a primary | |
209 | write = kTRUE; | |
210 | } else { | |
211 | // Check if the gamma comes from the decay chain of a primary particle | |
212 | TParticle* mother = mcE->Stack()->Particle(imo); | |
213 | imo = mother->GetFirstMother(); | |
214 | while((imo >= nprim) && (mother->GetUniqueID() == 4)) { | |
215 | mother = mcE->Stack()->Particle(imo); | |
216 | imo = mother->GetFirstMother(); | |
217 | } | |
218 | // Select according to pseudorapidity and production point | |
219 | if (imo < nprim && Select(mother, rv, zv)) | |
220 | write = kTRUE; | |
221 | } | |
222 | } | |
223 | /* | |
224 | else if (part->GetUniqueID() == 13){ | |
225 | // Evaporation | |
226 | // Check that we end at a primary particle | |
227 | TParticle* mother = part; | |
228 | Int_t imo = part->GetFirstMother(); | |
229 | while((imo >= nprim) && ((mother->GetUniqueID() == 4 ) || ( mother->GetUniqueID() == 13))) { | |
230 | mother = mcE->Stack()->Particle(imo); | |
231 | imo = mother->GetFirstMother(); | |
232 | } | |
233 | // Select according to pseudorapidity and production point | |
234 | if (imo < nprim && Select(mother, rv, zv)) | |
235 | write = kTRUE; | |
236 | } | |
237 | */ | |
238 | if (write) { | |
239 | if(mcH)mcH->SelectParticle(ip); | |
240 | j++; | |
241 | } | |
242 | } | |
243 | ||
244 | return; | |
245 | } | |
246 | ||
247 | Bool_t AliAnalysisTaskMCParticleFilter::Select(TParticle* part, Float_t rv, Float_t zv) | |
248 | { | |
249 | // Selection accoring to eta of the mother and production point | |
250 | // This has to be refined !!!!!! | |
251 | ||
252 | // Esp if we don't have collisison in the central barrel but e.g. beam gas | |
253 | // return kTRUE; | |
254 | ||
255 | Float_t eta = part->Eta(); | |
256 | ||
257 | // central barrel consider everything in the ITS... | |
258 | // large eta window for smeared vertex and SPD acceptance (2 at z = 0) | |
259 | // larger for V0s in the TPC | |
260 | // if (TMath::Abs(eta) < 2.5 && rv < 250. && TMath::Abs(zv)<255)return kTRUE; | |
261 | ||
262 | // Andreas' Cuts | |
263 | if (TMath::Abs(eta) < 1. && rv < 170)return kTRUE; | |
264 | ||
265 | // Muon arm | |
266 | if(eta > -4.2 && eta < -2.3 && zv > -500.)return kTRUE; // Muon arms | |
267 | ||
268 | // PMD acceptance 2.3 <= eta < = 3.5 | |
269 | // if(eta>2.0&&eta<3.7)return kTRUE; | |
270 | ||
271 | return kFALSE; | |
272 | ||
273 | } | |
274 |