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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 "TParameter.h" | |
25 | #include "TString.h" | |
26 | #include "TList.h" | |
27 | #include "TProfile.h" | |
28 | #include "TH1F.h" | |
29 | ||
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 "AliESDInputHandler.h" | |
39 | #include "AliAODEvent.h" | |
40 | #include "AliAODHeader.h" | |
41 | #include "AliAODMCHeader.h" | |
42 | #include "AliAODHandler.h" | |
43 | #include "AliAODVertex.h" | |
44 | #include "AliAODMCParticle.h" | |
45 | #include "AliCollisionGeometry.h" | |
46 | #include "AliGenDPMjetEventHeader.h" | |
47 | #include "AliGenHijingEventHeader.h" | |
48 | #include "AliGenPythiaEventHeader.h" | |
49 | #include "AliGenCocktailEventHeader.h" | |
50 | #include "AliGenEventHeaderTunedPbPb.h" | |
51 | #include "AliESDtrack.h" | |
52 | #include "AliAODTrack.h" | |
53 | #include "AliAODPid.h" | |
54 | #include "AliESDpid.h" | |
55 | ||
56 | #include "AliLog.h" | |
57 | ||
58 | ClassImp(AliAnalysisTaskMCParticleFilter) | |
59 | ||
60 | //////////////////////////////////////////////////////////////////////// | |
61 | ||
62 | //____________________________________________________________________ | |
63 | AliAnalysisTaskMCParticleFilter::AliAnalysisTaskMCParticleFilter(): | |
64 | AliAnalysisTaskSE(), | |
65 | fTrackFilterMother(0x0), | |
66 | fAODMcHeader(0x0), | |
67 | fAODMcParticles(0x0), | |
68 | fHistList(0x0) | |
69 | { | |
70 | // Default constructor | |
71 | } | |
72 | ||
73 | Bool_t AliAnalysisTaskMCParticleFilter::Notify() | |
74 | { | |
75 | // | |
76 | // Implemented Notify() to read the cross sections | |
77 | // from pyxsec.root | |
78 | // | |
79 | AliAnalysisManager *mgr = AliAnalysisManager::GetAnalysisManager(); | |
80 | TTree *tree = mgr->GetTree(); | |
81 | Double_t xsection = 0; | |
82 | UInt_t ntrials = 0; | |
83 | if(tree){ | |
84 | TFile *curfile = tree->GetCurrentFile(); | |
85 | if (!curfile) { | |
86 | Error("Notify","No current file"); | |
87 | return kFALSE; | |
88 | } | |
89 | ||
90 | TString fileName(curfile->GetName()); | |
91 | TString datafile = mgr->GetInputEventHandler()->GetInputFileName(); | |
92 | if (fileName.Contains(datafile)) { | |
93 | fileName.ReplaceAll(datafile, "pyxsec.root"); | |
94 | } | |
95 | else if(fileName.Contains("AliESDs.root")){ | |
96 | fileName.ReplaceAll("AliESDs.root", "pyxsec.root"); | |
97 | } | |
98 | else if(fileName.Contains("AliAOD.root")){ | |
99 | fileName.ReplaceAll("AliAOD.root", "pyxsec.root"); | |
100 | } | |
101 | else if(fileName.Contains("galice.root")){ | |
102 | // for running with galice and kinematics alone... | |
103 | fileName.ReplaceAll("galice.root", "pyxsec.root"); | |
104 | } | |
105 | ||
106 | ||
107 | TFile *fxsec = TFile::Open(fileName.Data()); | |
108 | if(!fxsec){ | |
109 | AliInfo(Form("%s:%d %s not found in the Input",(char*)__FILE__,__LINE__,fileName.Data())); | |
110 | // not a severe condition we just do not have the information... | |
111 | return kTRUE; | |
112 | } | |
113 | TTree *xtree = (TTree*)fxsec->Get("Xsection"); | |
114 | if(!xtree){ | |
115 | AliWarning(Form("%s:%d tree not found in the pyxsec.root",(char*)__FILE__,__LINE__)); | |
116 | return kTRUE; | |
117 | } | |
118 | xtree->SetBranchAddress("xsection",&xsection); | |
119 | xtree->SetBranchAddress("ntrials",&ntrials); | |
120 | xtree->GetEntry(0); | |
121 | ((TProfile*)(fHistList->FindObject("h1Xsec")))->Fill("<#sigma>",xsection); | |
122 | } | |
123 | return kTRUE; | |
124 | } | |
125 | ||
126 | ||
127 | ||
128 | //____________________________________________________________________ | |
129 | AliAnalysisTaskMCParticleFilter::AliAnalysisTaskMCParticleFilter(const char* name): | |
130 | AliAnalysisTaskSE(name), | |
131 | fTrackFilterMother(0x0), | |
132 | fAODMcHeader(0x0), | |
133 | fAODMcParticles(0x0), | |
134 | fHistList(0x0) | |
135 | { | |
136 | // Default constructor | |
137 | DefineOutput(1, TList::Class()); | |
138 | } | |
139 | ||
140 | /* | |
141 | //____________________________________________________________________ | |
142 | AliAnalysisTaskMCParticleFilter::AliAnalysisTaskMCParticleFilter(const AliAnalysisTaskMCParticleFilter& obj): | |
143 | AliAnalysisTaskSE(obj), | |
144 | fTrackFilterMother(obj.fTrackFilterMother) | |
145 | { | |
146 | // Copy constructor | |
147 | } | |
148 | */ | |
149 | //____________________________________________________________________ | |
150 | AliAnalysisTaskMCParticleFilter::~AliAnalysisTaskMCParticleFilter() | |
151 | { | |
152 | ||
153 | if(fAODMcHeader){ | |
154 | delete fAODMcHeader; | |
155 | } | |
156 | if(fAODMcParticles){ | |
157 | fAODMcParticles->Delete(); | |
158 | delete fAODMcParticles; | |
159 | } | |
160 | } | |
161 | ||
162 | /* | |
163 | //____________________________________________________________________ | |
164 | AliAnalysisTaskMCParticleFilter& AliAnalysisTaskMCParticleFilter::operator=(const AliAnalysisTaskMCParticleFilter& other) | |
165 | { | |
166 | // Assignment | |
167 | if(this!=&other) { | |
168 | AliAnalysisTaskSE::operator=(other); | |
169 | fTrackFilterMother = other.fTrackFilterMother; | |
170 | } | |
171 | return *this; | |
172 | } | |
173 | */ | |
174 | //____________________________________________________________________ | |
175 | void AliAnalysisTaskMCParticleFilter::UserCreateOutputObjects() | |
176 | { | |
177 | // Create the output container | |
178 | ||
179 | ||
180 | if (OutputTree()&&fTrackFilterMother) | |
181 | OutputTree()->GetUserInfo()->Add(fTrackFilterMother); | |
182 | ||
183 | // this part is mainly needed to set the MCEventHandler | |
184 | // to the AODHandler, this will not be needed when | |
185 | // AODHandler goes to ANALYSISalice | |
186 | // setting in the steering macro will not work on proof :( | |
187 | // so we have to do it in a task | |
188 | ||
189 | // the branch booking can also go into the AODHandler then | |
190 | ||
191 | ||
192 | // mcparticles | |
193 | fAODMcParticles = new TClonesArray("AliAODMCParticle", 0); | |
194 | fAODMcParticles->SetName(AliAODMCParticle::StdBranchName()); | |
195 | AddAODBranch("TClonesArray",&fAODMcParticles); | |
196 | ||
197 | // MC header... | |
198 | fAODMcHeader = new AliAODMCHeader(); | |
199 | fAODMcHeader->SetName(AliAODMCHeader::StdBranchName()); | |
200 | AddAODBranch("AliAODMCHeader",&fAODMcHeader); | |
201 | ||
202 | AliMCEventHandler *mcH = (AliMCEventHandler*) ((AliAnalysisManager::GetAnalysisManager())->GetMCtruthEventHandler()); | |
203 | AliAODHandler *aodH = dynamic_cast<AliAODHandler*> ((AliAnalysisManager::GetAnalysisManager())->GetOutputEventHandler()); | |
204 | if(!aodH){ | |
205 | AliWarning("Could not get AODHandler"); | |
206 | return; | |
207 | } | |
208 | aodH->SetMCEventHandler(mcH); | |
209 | ||
210 | ||
211 | // these are histograms, for averaging and summing | |
212 | // do it via histograms to be PROOF-proof | |
213 | // which merges the results from different workers | |
214 | // histos are not saved reside only in memory | |
215 | ||
216 | ||
217 | ||
218 | fHistList = new TList(); | |
219 | TProfile *h1Xsec = new TProfile("h1Xsec","xsec from pyxsec.root",1,0,1); | |
220 | h1Xsec->GetXaxis()->SetBinLabel(1,"<#sigma>"); | |
221 | fHistList->Add(h1Xsec); | |
222 | TH1F* h1Trials = new TH1F("h1Trials","trials from MC header",1,0,1); | |
223 | h1Trials->GetXaxis()->SetBinLabel(1,"#sum{ntrials}"); | |
224 | fHistList->Add(h1Trials); | |
225 | ||
226 | PostData(1,fHistList); | |
227 | ||
228 | } | |
229 | ||
230 | //____________________________________________________________________ | |
231 | void AliAnalysisTaskMCParticleFilter::UserExec(Option_t */*option*/) | |
232 | { | |
233 | // Execute analysis for current event | |
234 | // | |
235 | ||
236 | // Fill AOD tracks from Kinematic stack | |
237 | PostData(1,fHistList); | |
238 | ||
239 | // get AliAOD Event | |
240 | AliAODEvent* aod = AODEvent(); | |
241 | if (!aod) { | |
242 | AliWarning("No Output Handler connected, doing nothing !") ; | |
243 | return; | |
244 | } | |
245 | ||
246 | AliMCEventHandler *mcH = (AliMCEventHandler*) ((AliAnalysisManager::GetAnalysisManager())->GetMCtruthEventHandler()); | |
247 | if(!mcH){ | |
248 | AliWarning("No MC handler Found"); | |
249 | return; | |
250 | } | |
251 | ||
252 | AliAODHandler *aodH = dynamic_cast<AliAODHandler*> ((AliAnalysisManager::GetAnalysisManager())->GetOutputEventHandler()); | |
253 | if(!aodH){ | |
254 | AliWarning("Could not get AODHandler"); | |
255 | return; | |
256 | } | |
257 | ||
258 | ||
259 | ||
260 | // fetch the output | |
261 | // Fill control histos | |
262 | ||
263 | // tmp array for holding the mctracks | |
264 | // need to set mother and duagther __before__ | |
265 | // filling in the tree | |
266 | ||
267 | AliMCEvent *mcE = MCEvent(); | |
268 | ||
269 | if(!mcE){ | |
270 | AliWarning("No MC event Found"); | |
271 | return; | |
272 | } | |
273 | ||
274 | Int_t np = mcE->GetNumberOfTracks(); | |
275 | Int_t nprim = mcE->GetNumberOfPrimaries(); | |
276 | // TODO ADD MC VERTEX | |
277 | ||
278 | // Get the proper MC Collision Geometry | |
279 | AliGenEventHeader* mcEH = mcE->GenEventHeader(); | |
280 | ||
281 | AliGenPythiaEventHeader *pyH = dynamic_cast<AliGenPythiaEventHeader*>(mcEH); | |
282 | AliGenHijingEventHeader *hiH = 0; | |
283 | AliCollisionGeometry *colG = 0; | |
284 | AliGenDPMjetEventHeader *dpmH = 0; | |
285 | AliGenEventHeaderTunedPbPb *tunedH = 0; | |
286 | ||
287 | // it can be only one save some casts | |
288 | // assuming PYTHIA and HIJING are the most likely ones... | |
289 | if(!pyH){ | |
290 | hiH = dynamic_cast<AliGenHijingEventHeader*>(mcEH); | |
291 | if(!hiH){ | |
292 | dpmH = dynamic_cast<AliGenDPMjetEventHeader*>(mcEH); | |
293 | if(!dpmH){ | |
294 | tunedH = dynamic_cast<AliGenEventHeaderTunedPbPb*>(mcEH); | |
295 | } | |
296 | } | |
297 | } | |
298 | ||
299 | if (hiH || dpmH) colG = dynamic_cast<AliCollisionGeometry*>(mcEH); | |
300 | ||
301 | // fetch the trials on a event by event basis, not from pyxsec.root otherwise | |
302 | // we will get a problem when running on proof since Notify may be called | |
303 | // more than once per file | |
304 | // consider storing this information in the AOD output via AliAODHandler | |
305 | Float_t ntrials = 0; | |
306 | if (!colG) { | |
307 | AliGenCocktailEventHeader *ccEH = dynamic_cast<AliGenCocktailEventHeader *>(mcEH); | |
308 | if (ccEH) { | |
309 | TList *genHeaders = ccEH->GetHeaders(); | |
310 | for (int imch=0; imch<genHeaders->GetEntries(); imch++) { | |
311 | if(!pyH)pyH = dynamic_cast<AliGenPythiaEventHeader*>(genHeaders->At(imch)); | |
312 | if(!hiH)hiH = dynamic_cast<AliGenHijingEventHeader*>(genHeaders->At(imch)); | |
313 | if(!colG)colG = dynamic_cast<AliCollisionGeometry *>(genHeaders->At(imch)); | |
314 | if(!dpmH)dpmH = dynamic_cast<AliGenDPMjetEventHeader*>(genHeaders->At(imch)); | |
315 | } | |
316 | } | |
317 | } | |
318 | ||
319 | // take the trials from the p+p event | |
320 | if(hiH)ntrials = hiH->Trials(); | |
321 | if(dpmH)ntrials = dpmH->Trials(); | |
322 | if(pyH)ntrials = pyH->Trials(); | |
323 | if(ntrials)((TH1F*)(fHistList->FindObject("h1Trials")))->Fill("#sum{ntrials}",ntrials); | |
324 | ||
325 | ||
326 | ||
327 | ||
328 | if (colG) { | |
329 | fAODMcHeader->SetReactionPlaneAngle(colG->ReactionPlaneAngle()); | |
330 | AliInfo(Form("Found Collision Geometry. Got Reaction Plane %lf\n", colG->ReactionPlaneAngle())); | |
331 | } | |
332 | else if(tunedH) { | |
333 | fAODMcHeader->SetReactionPlaneAngle(tunedH->GetPsi2()); | |
334 | fAODMcHeader->SetCrossSection(tunedH->GetCentrality()); | |
335 | } | |
336 | ||
337 | ||
338 | Int_t j=0; | |
339 | for (Int_t ip = 0; ip < np; ip++){ | |
340 | AliMCParticle* mcpart = (AliMCParticle*) mcE->GetTrack(ip); | |
341 | TParticle* part = mcpart->Particle(); | |
342 | Float_t xv = part->Vx(); | |
343 | Float_t yv = part->Vy(); | |
344 | Float_t zv = part->Vz(); | |
345 | Float_t rv = TMath::Sqrt(xv * xv + yv * yv); | |
346 | ||
347 | Bool_t write = kFALSE; | |
348 | ||
349 | if (ip < nprim) { | |
350 | // Select the primary event | |
351 | write = kTRUE; | |
352 | } else if (part->GetUniqueID() == kPDecay) { | |
353 | // Particles from decay | |
354 | // Check that the decay chain ends at a primary particle | |
355 | AliMCParticle* mother = mcpart; | |
356 | Int_t imo = mcpart->GetMother(); | |
357 | while((imo >= nprim) && (mother->GetUniqueID() == kPDecay)) { | |
358 | mother = (AliMCParticle*) mcE->GetTrack(imo); | |
359 | imo = mother->GetMother(); | |
360 | } | |
361 | // Select according to pseudorapidity and production point of primary ancestor | |
362 | if (imo < nprim)write = kTRUE; | |
363 | // if(!Select(((AliMCParticle*) mcE->GetTrack(imo))->Particle(), rv, zv))write = kFALSE; // selection on eta and phi of the mother | |
364 | } else if (part->GetUniqueID() == kPPair) { | |
365 | // Now look for pair production | |
366 | Int_t imo = mcpart->GetMother(); | |
367 | if (imo < nprim) { | |
368 | // Select, if the gamma is a primary | |
369 | write = kTRUE; | |
370 | } else { | |
371 | // Check if the gamma comes from the decay chain of a primary particle | |
372 | AliMCParticle* mother = (AliMCParticle*) mcE->GetTrack(imo); | |
373 | imo = mother->GetMother(); | |
374 | while((imo >= nprim) && (mother->GetUniqueID() == kPDecay)) { | |
375 | mother = (AliMCParticle*) mcE->GetTrack(imo); | |
376 | imo = mother->GetMother(); | |
377 | } | |
378 | // Select according to pseudorapidity and production point | |
379 | if (imo < nprim && Select(mother->Particle(), rv, zv)) | |
380 | write = kTRUE; | |
381 | } | |
382 | } | |
383 | ||
384 | if (write) { | |
385 | if(mcH)mcH->SelectParticle(ip); | |
386 | j++; | |
387 | } | |
388 | } | |
389 | ||
390 | /* | |
391 | ||
392 | // check varibales for charm need all daughters | |
393 | static int iTaken = 0; | |
394 | static int iAll = 0; | |
395 | static int iCharm = 0; | |
396 | ||
397 | for (Int_t ip = 0; ip < np; ip++){ | |
398 | AliMCParticle* mcpart = (AliMCParticle*) mcE->GetTrack(ip); | |
399 | TParticle* part = mcpart->Particle(); | |
400 | // debug info to check fro charm daugthers | |
401 | if((TMath::Abs(part->GetPdgCode()))==411){ | |
402 | iCharm++; | |
403 | Int_t d0 = part->GetFirstDaughter(); | |
404 | Int_t d1 = part->GetLastDaughter(); | |
405 | if(d0>0&&d1>0){ | |
406 | for(int id = d0;id <= d1;id++){ | |
407 | iAll++; | |
408 | if(mcH->IsParticleSelected(id)){ | |
409 | iTaken++; | |
410 | Printf("> %d/%d Taken",id,nprim); | |
411 | PrintMCParticle( (AliMCParticle*)mcE->GetTrack(id),id); | |
412 | } | |
413 | else{ | |
414 | Printf("> %d/%d NOT Taken",id,nprim); | |
415 | PrintMCParticle( (AliMCParticle*)mcE->GetTrack(id),id); | |
416 | } | |
417 | } | |
418 | } | |
419 | }// if charm | |
420 | AliInfo(Form("Taken daughters %d/%d of %d charm",iTaken,iAll,iCharm)); | |
421 | } | |
422 | */ | |
423 | ||
424 | ||
425 | aodH->StoreMCParticles(); | |
426 | ||
427 | return; | |
428 | } | |
429 | ||
430 | void AliAnalysisTaskMCParticleFilter::Terminate(Option_t */*option*/){ | |
431 | // | |
432 | // Terminate the execution save the PYTHIA x_section to the UserInfo() | |
433 | // | |
434 | ||
435 | ||
436 | fHistList = (TList*)GetOutputData(1); | |
437 | if(!fHistList){ | |
438 | Printf("%s:%d Output list not found",(char*)__FILE__,__LINE__); | |
439 | return; | |
440 | } | |
441 | ||
442 | TProfile *hXsec = ((TProfile*)(fHistList->FindObject("h1Xsec"))); | |
443 | TH1F* hTrials = ((TH1F*)(fHistList->FindObject("h1Trials"))); | |
444 | if(!hXsec)return; | |
445 | if(!hTrials)return; | |
446 | ||
447 | Float_t xsec = hXsec->GetBinContent(1); | |
448 | Float_t trials = hTrials->Integral(); | |
449 | AliInfo(Form("Average -section %.4E and total number of trials %E",xsec,trials)); | |
450 | ||
451 | } | |
452 | ||
453 | Bool_t AliAnalysisTaskMCParticleFilter::Select(TParticle* part, Float_t rv, Float_t zv) | |
454 | { | |
455 | // Selection accoring to eta of the mother and production point | |
456 | // This has to be refined !!!!!! | |
457 | ||
458 | // Esp if we don't have collisison in the central barrel but e.g. beam gas | |
459 | // return kTRUE; | |
460 | ||
461 | Float_t eta = part->Eta(); | |
462 | ||
463 | // central barrel consider everything in the ITS... | |
464 | // large eta window for smeared vertex and SPD acceptance (2 at z = 0) | |
465 | // larger for V0s in the TPC | |
466 | // if (TMath::Abs(eta) < 2.5 && rv < 250. && TMath::Abs(zv)<255)return kTRUE; | |
467 | ||
468 | if (TMath::Abs(eta) < 2.5 && rv < 170)return kTRUE; | |
469 | ||
470 | // Andreas' Cuts | |
471 | // if (TMath::Abs(eta) < 1. && rv < 170)return kTRUE; | |
472 | ||
473 | ||
474 | ||
475 | // Muon arm | |
476 | if(eta > -4.2 && eta < -2.3 && zv > -500.)return kTRUE; // Muon arms | |
477 | ||
478 | // PMD acceptance 2.3 <= eta < = 3.5 | |
479 | // if(eta>2.0&&eta<3.7)return kTRUE; | |
480 | ||
481 | return kFALSE; | |
482 | ||
483 | } | |
484 | ||
485 | void AliAnalysisTaskMCParticleFilter::PrintMCParticle(const AliMCParticle *mcp,Int_t np){ | |
486 | ||
487 | const TParticle *p = mcp->Particle(); | |
488 | Printf("Nr.%d --- Status %d ---- Mother1 %d Mother2 %d Daughter1 %d Daughte\ | |
489 | r2 %d ", | |
490 | np,p->GetStatusCode(),p->GetMother(0),p->GetMother(1),p->GetDaughter \ | |
491 | (0),p->GetDaughter(1)); | |
492 | Printf("Eta %3.3f Phi %3.3f ",p->Eta(),p->Phi()); | |
493 | p->Print(); | |
494 | Printf("---------------------------------------"); | |
495 | } |