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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" | |
a3b51fd2 | 24 | #include "TParameter.h" |
da97a08a | 25 | #include "TString.h" |
a3b51fd2 | 26 | #include "TList.h" |
27 | #include "TProfile.h" | |
28 | #include "TH1F.h" | |
29 | ||
da97a08a | 30 | |
31 | #include "AliAnalysisTaskMCParticleFilter.h" | |
32 | #include "AliAnalysisManager.h" | |
33 | #include "AliAnalysisFilter.h" | |
34 | #include "AliHeader.h" | |
35 | #include "AliStack.h" | |
36 | #include "AliMCEvent.h" | |
37 | #include "AliMCEventHandler.h" | |
38 | #include "AliAODEvent.h" | |
39 | #include "AliAODHeader.h" | |
dce1b636 | 40 | #include "AliAODMCHeader.h" |
da97a08a | 41 | #include "AliAODHandler.h" |
42 | #include "AliAODVertex.h" | |
43 | #include "AliAODMCParticle.h" | |
e988332e | 44 | #include "AliCollisionGeometry.h" |
c4b2bb17 | 45 | #include "AliGenDPMjetEventHeader.h" |
46 | #include "AliGenHijingEventHeader.h" | |
47 | #include "AliGenPythiaEventHeader.h" | |
e988332e | 48 | #include "AliGenCocktailEventHeader.h" |
da97a08a | 49 | |
50 | #include "AliLog.h" | |
51 | ||
52 | ClassImp(AliAnalysisTaskMCParticleFilter) | |
53 | ||
54 | //////////////////////////////////////////////////////////////////////// | |
55 | ||
56 | //____________________________________________________________________ | |
57 | AliAnalysisTaskMCParticleFilter::AliAnalysisTaskMCParticleFilter(): | |
58 | AliAnalysisTaskSE(), | |
a3b51fd2 | 59 | fTrackFilterMother(0x0), |
60 | fHistList(0x0) | |
da97a08a | 61 | { |
62 | // Default constructor | |
63 | } | |
64 | ||
a3b51fd2 | 65 | Bool_t AliAnalysisTaskMCParticleFilter::Notify() |
66 | { | |
67 | // | |
68 | // Implemented Notify() to read the cross sections | |
c4b2bb17 | 69 | // from pyxsec.root |
a3b51fd2 | 70 | // |
71 | TTree *tree = AliAnalysisManager::GetAnalysisManager()->GetTree(); | |
72 | Double_t xsection = 0; | |
73 | UInt_t ntrials = 0; | |
74 | if(tree){ | |
75 | TFile *curfile = tree->GetCurrentFile(); | |
76 | if (!curfile) { | |
77 | Error("Notify","No current file"); | |
78 | return kFALSE; | |
79 | } | |
80 | ||
81 | TString fileName(curfile->GetName()); | |
82 | if(fileName.Contains("AliESDs.root")){ | |
83 | fileName.ReplaceAll("AliESDs.root", "pyxsec.root"); | |
84 | } | |
85 | else if(fileName.Contains("AliAOD.root")){ | |
86 | fileName.ReplaceAll("AliAOD.root", "pyxsec.root"); | |
87 | } | |
88 | else if(fileName.Contains("galice.root")){ | |
89 | // for running with galice and kinematics alone... | |
90 | fileName.ReplaceAll("galice.root", "pyxsec.root"); | |
91 | } | |
92 | ||
93 | ||
94 | TFile *fxsec = TFile::Open(fileName.Data()); | |
95 | if(!fxsec){ | |
96 | AliInfo(Form("%s:%d %s not found in the Input",(char*)__FILE__,__LINE__,fileName.Data())); | |
97 | // not a severe condition we just do not have the information... | |
98 | return kTRUE; | |
99 | } | |
100 | TTree *xtree = (TTree*)fxsec->Get("Xsection"); | |
101 | if(!xtree){ | |
cd0ecb97 | 102 | AliWarning(Form("%s:%d tree not found in the pyxsec.root",(char*)__FILE__,__LINE__)); |
a3b51fd2 | 103 | return kTRUE; |
104 | } | |
105 | xtree->SetBranchAddress("xsection",&xsection); | |
106 | xtree->SetBranchAddress("ntrials",&ntrials); | |
107 | xtree->GetEntry(0); | |
108 | ((TProfile*)(fHistList->FindObject("h1Xsec")))->Fill("<#sigma>",xsection); | |
a3b51fd2 | 109 | } |
110 | return kTRUE; | |
111 | } | |
112 | ||
113 | ||
114 | ||
da97a08a | 115 | //____________________________________________________________________ |
116 | AliAnalysisTaskMCParticleFilter::AliAnalysisTaskMCParticleFilter(const char* name): | |
117 | AliAnalysisTaskSE(name), | |
a3b51fd2 | 118 | fTrackFilterMother(0x0), |
119 | fHistList(0x0) | |
da97a08a | 120 | { |
121 | // Default constructor | |
cc008a4b | 122 | DefineOutput(1, TList::Class()); |
da97a08a | 123 | } |
124 | ||
a3b51fd2 | 125 | /* |
da97a08a | 126 | //____________________________________________________________________ |
127 | AliAnalysisTaskMCParticleFilter::AliAnalysisTaskMCParticleFilter(const AliAnalysisTaskMCParticleFilter& obj): | |
128 | AliAnalysisTaskSE(obj), | |
129 | fTrackFilterMother(obj.fTrackFilterMother) | |
130 | { | |
131 | // Copy constructor | |
132 | } | |
a3b51fd2 | 133 | */ |
da97a08a | 134 | //____________________________________________________________________ |
135 | AliAnalysisTaskMCParticleFilter::~AliAnalysisTaskMCParticleFilter() | |
136 | { | |
137 | // if( fTrackFilterMother ) delete fTrackFilterMother; | |
138 | } | |
139 | ||
a3b51fd2 | 140 | /* |
da97a08a | 141 | //____________________________________________________________________ |
142 | AliAnalysisTaskMCParticleFilter& AliAnalysisTaskMCParticleFilter::operator=(const AliAnalysisTaskMCParticleFilter& other) | |
143 | { | |
144 | // Assignment | |
145 | if(this!=&other) { | |
146 | AliAnalysisTaskSE::operator=(other); | |
147 | fTrackFilterMother = other.fTrackFilterMother; | |
148 | } | |
149 | return *this; | |
150 | } | |
a3b51fd2 | 151 | */ |
da97a08a | 152 | //____________________________________________________________________ |
153 | void AliAnalysisTaskMCParticleFilter::UserCreateOutputObjects() | |
154 | { | |
155 | // Create the output container | |
a7cd6336 | 156 | PostData(1,fHistList); |
157 | ||
da97a08a | 158 | if (OutputTree()&&fTrackFilterMother) |
159 | OutputTree()->GetUserInfo()->Add(fTrackFilterMother); | |
d2740fba | 160 | |
161 | // this part is mainly needed to set the MCEventHandler | |
162 | // to the AODHandler, this will not be needed when | |
163 | // AODHandler goes to ANALYSISalice | |
164 | // setting in the steering macro will not work on proof :( | |
165 | // so we have to do it in a task | |
166 | ||
167 | // the branch booking can also go into the AODHandler then | |
168 | ||
dce1b636 | 169 | |
170 | // mcparticles | |
da97a08a | 171 | TClonesArray *tca = new TClonesArray("AliAODMCParticle", 0); |
172 | tca->SetName(AliAODMCParticle::StdBranchName()); | |
173 | AddAODBranch("TClonesArray",&tca); | |
da97a08a | 174 | |
dce1b636 | 175 | // MC header... |
176 | AliAODMCHeader *mcHeader = new AliAODMCHeader(); | |
dce1b636 | 177 | mcHeader->SetName(AliAODMCHeader::StdBranchName()); |
178 | AddAODBranch("AliAODMCHeader",&mcHeader); | |
179 | ||
180 | ||
181 | ||
182 | AliMCEventHandler *mcH = (AliMCEventHandler*) ((AliAnalysisManager::GetAnalysisManager())->GetMCtruthEventHandler()); | |
da97a08a | 183 | AliAODHandler *aodH = dynamic_cast<AliAODHandler*> ((AliAnalysisManager::GetAnalysisManager())->GetOutputEventHandler()); |
184 | if(!aodH){ | |
3827f93a | 185 | AliWarning("Could not get AODHandler"); |
da97a08a | 186 | return; |
187 | } | |
188 | aodH->SetMCEventHandler(mcH); | |
dce1b636 | 189 | |
a3b51fd2 | 190 | |
191 | // these are histograms, for averaging and summing | |
192 | // do it via histograms to be PROOF-proof | |
193 | // which merges the results from different workers | |
194 | // histos are not saved reside only in memory | |
195 | ||
196 | ||
197 | ||
198 | fHistList = new TList(); | |
199 | TProfile *h1Xsec = new TProfile("h1Xsec","xsec from pyxsec.root",1,0,1); | |
200 | h1Xsec->GetXaxis()->SetBinLabel(1,"<#sigma>"); | |
201 | fHistList->Add(h1Xsec); | |
c4b2bb17 | 202 | TH1F* h1Trials = new TH1F("h1Trials","trials from MC header",1,0,1); |
a3b51fd2 | 203 | h1Trials->GetXaxis()->SetBinLabel(1,"#sum{ntrials}"); |
204 | fHistList->Add(h1Trials); | |
205 | ||
da97a08a | 206 | |
207 | } | |
208 | ||
209 | //____________________________________________________________________ | |
210 | void AliAnalysisTaskMCParticleFilter::UserExec(Option_t */*option*/) | |
211 | { | |
212 | // Execute analysis for current event | |
213 | // | |
214 | ||
215 | // Fill AOD tracks from Kinematic stack | |
216 | ||
217 | // get AliAOD Event | |
218 | AliAODEvent* aod = AODEvent(); | |
219 | if (!aod) { | |
220 | AliWarning("No Output Handler connected, doing nothing !") ; | |
221 | return; | |
222 | } | |
223 | ||
224 | AliMCEventHandler *mcH = (AliMCEventHandler*) ((AliAnalysisManager::GetAnalysisManager())->GetMCtruthEventHandler()); | |
225 | if(!mcH){ | |
226 | AliWarning("No MC handler Found"); | |
227 | return; | |
228 | } | |
3827f93a | 229 | |
230 | AliAODHandler *aodH = dynamic_cast<AliAODHandler*> ((AliAnalysisManager::GetAnalysisManager())->GetOutputEventHandler()); | |
231 | if(!aodH){ | |
232 | AliWarning("Could not get AODHandler"); | |
233 | return; | |
234 | } | |
235 | ||
da97a08a | 236 | |
237 | ||
238 | // fetch the output | |
239 | // Fill control histos | |
240 | ||
241 | // tmp array for holding the mctracks | |
242 | // need to set mother and duagther __before__ | |
243 | // filling in the tree | |
244 | ||
245 | AliMCEvent *mcE = MCEvent(); | |
246 | ||
247 | if(!mcE){ | |
248 | AliWarning("No MC event Found"); | |
249 | return; | |
250 | } | |
251 | ||
da97a08a | 252 | Int_t np = mcE->GetNumberOfTracks(); |
93836e1b | 253 | Int_t nprim = mcE->GetNumberOfPrimaries(); |
da97a08a | 254 | // TODO ADD MC VERTEX |
e988332e | 255 | |
256 | AliAODMCHeader *aodMCHo = (AliAODMCHeader *) aod->FindListObject("mcHeader"); | |
e988332e | 257 | // Get the proper MC Collision Geometry |
258 | AliGenEventHeader* mcEH = mcE->GenEventHeader(); | |
e988332e | 259 | |
cc008a4b | 260 | AliGenPythiaEventHeader *pyH = dynamic_cast<AliGenPythiaEventHeader*>(mcEH); |
261 | AliGenHijingEventHeader *hiH = 0; | |
262 | AliCollisionGeometry *colG = 0; | |
c4b2bb17 | 263 | AliGenDPMjetEventHeader *dpmH = 0; |
264 | // it can be only one save some casts | |
265 | // assuming PYTHIA and HIJING are the most likely ones... | |
266 | if(!pyH){ | |
cc008a4b | 267 | hiH = dynamic_cast<AliGenHijingEventHeader*>(mcEH); |
268 | if(!hiH){ | |
269 | dpmH = dynamic_cast<AliGenDPMjetEventHeader*>(mcEH); | |
270 | } | |
c4b2bb17 | 271 | } |
cc008a4b | 272 | |
273 | if (hiH || dpmH) colG = dynamic_cast<AliCollisionGeometry*>(mcEH); | |
c4b2bb17 | 274 | |
275 | // fetch the trials on a event by event basis, not from pyxsec.root otherwise | |
276 | // we will get a problem when running on proof since Notify may be called | |
277 | // more than once per file | |
278 | // consider storing this information in the AOD output via AliAODHandler | |
279 | Float_t ntrials = 0; | |
e988332e | 280 | if (!colG) { |
281 | AliGenCocktailEventHeader *ccEH = dynamic_cast<AliGenCocktailEventHeader *>(mcEH); | |
282 | if (ccEH) { | |
283 | TList *genHeaders = ccEH->GetHeaders(); | |
284 | for (int imch=0; imch<genHeaders->GetEntries(); imch++) { | |
c4b2bb17 | 285 | if(!pyH)dynamic_cast<AliGenPythiaEventHeader*>(genHeaders->At(imch)); |
286 | if(!hiH)dynamic_cast<AliGenHijingEventHeader*>(genHeaders->At(imch)); | |
287 | if(!colG)colG = dynamic_cast<AliCollisionGeometry *>(genHeaders->At(imch)); | |
288 | if(!dpmH)dynamic_cast<AliGenDPMjetEventHeader*>(genHeaders->At(imch)); | |
e988332e | 289 | } |
290 | } | |
291 | } | |
292 | ||
c4b2bb17 | 293 | // take the trials from the p+p event |
294 | if(hiH)ntrials = hiH->Trials(); | |
5ae590c4 | 295 | if(dpmH)ntrials = dpmH->Trials(); |
c4b2bb17 | 296 | if(pyH)ntrials = pyH->Trials(); |
297 | if(ntrials)((TH1F*)(fHistList->FindObject("h1Trials")))->Fill("#sum{ntrials}",ntrials); | |
298 | ||
299 | ||
300 | ||
301 | ||
e988332e | 302 | if (colG) { |
303 | aodMCHo->SetReactionPlaneAngle(colG->ReactionPlaneAngle()); | |
cd0ecb97 | 304 | AliInfo(Form("Found Collision Geometry. Got Reaction Plane %lf\n", colG->ReactionPlaneAngle())); |
e988332e | 305 | } |
306 | ||
de514cf0 | 307 | |
308 | ||
309 | // check varibales for charm need all daughters | |
310 | static int iTaken = 0; | |
311 | static int iAll = 0; | |
312 | static int iCharm = 0; | |
da97a08a | 313 | |
314 | ||
da97a08a | 315 | Int_t j=0; |
316 | for (Int_t ip = 0; ip < np; ip++){ | |
7aad0c47 | 317 | AliMCParticle* mcpart = (AliMCParticle*) mcE->GetTrack(ip); |
da97a08a | 318 | TParticle* part = mcpart->Particle(); |
da97a08a | 319 | Float_t xv = part->Vx(); |
320 | Float_t yv = part->Vy(); | |
321 | Float_t zv = part->Vz(); | |
322 | Float_t rv = TMath::Sqrt(xv * xv + yv * yv); | |
323 | ||
324 | Bool_t write = kFALSE; | |
63892dd0 | 325 | |
da97a08a | 326 | if (ip < nprim) { |
327 | // Select the primary event | |
328 | write = kTRUE; | |
43d79481 | 329 | } else if (part->GetUniqueID() == kPDecay) { |
da97a08a | 330 | // Particles from decay |
331 | // Check that the decay chain ends at a primary particle | |
93836e1b | 332 | AliMCParticle* mother = mcpart; |
333 | Int_t imo = mcpart->GetMother(); | |
43d79481 | 334 | while((imo >= nprim) && (mother->GetUniqueID() == kPDecay)) { |
7aad0c47 | 335 | mother = (AliMCParticle*) mcE->GetTrack(imo); |
93836e1b | 336 | imo = mother->GetMother(); |
da97a08a | 337 | } |
63892dd0 | 338 | // Select according to pseudorapidity and production point of primary ancestor |
7aad0c47 | 339 | if (imo < nprim && Select(((AliMCParticle*) mcE->GetTrack(imo))->Particle(), rv, zv))write = kTRUE; |
43d79481 | 340 | } else if (part->GetUniqueID() == kPPair) { |
da97a08a | 341 | // Now look for pair production |
93836e1b | 342 | Int_t imo = mcpart->GetMother(); |
da97a08a | 343 | if (imo < nprim) { |
344 | // Select, if the gamma is a primary | |
345 | write = kTRUE; | |
346 | } else { | |
347 | // Check if the gamma comes from the decay chain of a primary particle | |
7aad0c47 | 348 | AliMCParticle* mother = (AliMCParticle*) mcE->GetTrack(imo); |
93836e1b | 349 | imo = mother->GetMother(); |
43d79481 | 350 | while((imo >= nprim) && (mother->GetUniqueID() == kPDecay)) { |
7aad0c47 | 351 | mother = (AliMCParticle*) mcE->GetTrack(imo); |
93836e1b | 352 | imo = mother->GetMother(); |
da97a08a | 353 | } |
354 | // Select according to pseudorapidity and production point | |
93836e1b | 355 | if (imo < nprim && Select(mother->Particle(), rv, zv)) |
da97a08a | 356 | write = kTRUE; |
357 | } | |
358 | } | |
359 | /* | |
360 | else if (part->GetUniqueID() == 13){ | |
361 | // Evaporation | |
362 | // Check that we end at a primary particle | |
363 | TParticle* mother = part; | |
364 | Int_t imo = part->GetFirstMother(); | |
365 | while((imo >= nprim) && ((mother->GetUniqueID() == 4 ) || ( mother->GetUniqueID() == 13))) { | |
366 | mother = mcE->Stack()->Particle(imo); | |
367 | imo = mother->GetFirstMother(); | |
368 | } | |
369 | // Select according to pseudorapidity and production point | |
370 | if (imo < nprim && Select(mother, rv, zv)) | |
371 | write = kTRUE; | |
372 | } | |
373 | */ | |
374 | if (write) { | |
375 | if(mcH)mcH->SelectParticle(ip); | |
376 | j++; | |
de514cf0 | 377 | |
378 | // debug info to check fro charm daugthers | |
379 | if((TMath::Abs(part->GetPdgCode()))==411){ | |
380 | iCharm++; | |
381 | Int_t d0 = mcpart->GetFirstDaughter(); | |
382 | Int_t d1 = mcpart->GetLastDaughter(); | |
383 | if(d0>0&&d1>0){ | |
384 | for(int id = d0;id <= d1;id++){ | |
385 | iAll++; | |
386 | if(mcH->IsParticleSelected(id))iTaken++; | |
387 | } | |
63892dd0 | 388 | } |
de514cf0 | 389 | }// if charm |
63892dd0 | 390 | } |
391 | } | |
a3c57861 | 392 | |
393 | AliInfo(Form("Taken daughters %d/%d of %d charm",iTaken,iAll,iCharm)); | |
63892dd0 | 394 | |
3827f93a | 395 | aodH->StoreMCParticles(); |
a3b51fd2 | 396 | PostData(1,fHistList); |
63892dd0 | 397 | |
da97a08a | 398 | return; |
399 | } | |
400 | ||
a3b51fd2 | 401 | void AliAnalysisTaskMCParticleFilter::Terminate(Option_t */*option*/){ |
402 | // | |
403 | // Terminate the execution save the PYTHIA x_section to the UserInfo() | |
404 | // | |
405 | ||
406 | ||
a3b51fd2 | 407 | fHistList = (TList*)GetOutputData(1); |
408 | if(!fHistList){ | |
409 | Printf("%s:%d Output list not found",(char*)__FILE__,__LINE__); | |
410 | return; | |
411 | } | |
412 | ||
a3b51fd2 | 413 | TProfile *hXsec = ((TProfile*)(fHistList->FindObject("h1Xsec"))); |
414 | TH1F* hTrials = ((TH1F*)(fHistList->FindObject("h1Trials"))); | |
415 | if(!hXsec)return; | |
416 | if(!hTrials)return; | |
417 | ||
418 | Float_t xsec = hXsec->GetBinContent(1); | |
419 | Float_t trials = hTrials->Integral(); | |
420 | AliInfo(Form("Average -section %.4E and total number of trials %E",xsec,trials)); | |
a3b51fd2 | 421 | |
422 | } | |
423 | ||
da97a08a | 424 | Bool_t AliAnalysisTaskMCParticleFilter::Select(TParticle* part, Float_t rv, Float_t zv) |
425 | { | |
426 | // Selection accoring to eta of the mother and production point | |
427 | // This has to be refined !!!!!! | |
428 | ||
429 | // Esp if we don't have collisison in the central barrel but e.g. beam gas | |
430 | // return kTRUE; | |
431 | ||
432 | Float_t eta = part->Eta(); | |
433 | ||
434 | // central barrel consider everything in the ITS... | |
435 | // large eta window for smeared vertex and SPD acceptance (2 at z = 0) | |
436 | // larger for V0s in the TPC | |
437 | // if (TMath::Abs(eta) < 2.5 && rv < 250. && TMath::Abs(zv)<255)return kTRUE; | |
438 | ||
63892dd0 | 439 | if (TMath::Abs(eta) < 2.5 && rv < 170)return kTRUE; |
440 | ||
da97a08a | 441 | // Andreas' Cuts |
63892dd0 | 442 | // if (TMath::Abs(eta) < 1. && rv < 170)return kTRUE; |
443 | ||
444 | ||
da97a08a | 445 | |
446 | // Muon arm | |
447 | if(eta > -4.2 && eta < -2.3 && zv > -500.)return kTRUE; // Muon arms | |
448 | ||
449 | // PMD acceptance 2.3 <= eta < = 3.5 | |
450 | // if(eta>2.0&&eta<3.7)return kTRUE; | |
451 | ||
452 | return kFALSE; | |
453 | ||
454 | } | |
455 |