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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 "AliAODEvent.h" | |
39 | #include "AliAODHeader.h" | |
40 | #include "AliAODMCHeader.h" | |
41 | #include "AliAODHandler.h" | |
42 | #include "AliAODVertex.h" | |
43 | #include "AliAODMCParticle.h" | |
44 | #include "AliCollisionGeometry.h" | |
45 | #include "AliGenDPMjetEventHeader.h" | |
46 | #include "AliGenHijingEventHeader.h" | |
47 | #include "AliGenPythiaEventHeader.h" | |
48 | #include "AliGenCocktailEventHeader.h" | |
49 | ||
50 | #include "AliLog.h" | |
51 | ||
52 | ClassImp(AliAnalysisTaskMCParticleFilter) | |
53 | ||
54 | //////////////////////////////////////////////////////////////////////// | |
55 | ||
56 | //____________________________________________________________________ | |
57 | AliAnalysisTaskMCParticleFilter::AliAnalysisTaskMCParticleFilter(): | |
58 | AliAnalysisTaskSE(), | |
59 | fTrackFilterMother(0x0), | |
60 | fAODMcHeader(0x0), | |
61 | fAODMcParticles(0x0), | |
62 | fHistList(0x0) | |
63 | { | |
64 | // Default constructor | |
65 | } | |
66 | ||
67 | Bool_t AliAnalysisTaskMCParticleFilter::Notify() | |
68 | { | |
69 | // | |
70 | // Implemented Notify() to read the cross sections | |
71 | // from pyxsec.root | |
72 | // | |
73 | TTree *tree = AliAnalysisManager::GetAnalysisManager()->GetTree(); | |
74 | Double_t xsection = 0; | |
75 | UInt_t ntrials = 0; | |
76 | if(tree){ | |
77 | TFile *curfile = tree->GetCurrentFile(); | |
78 | if (!curfile) { | |
79 | Error("Notify","No current file"); | |
80 | return kFALSE; | |
81 | } | |
82 | ||
83 | TString fileName(curfile->GetName()); | |
84 | if(fileName.Contains("AliESDs.root")){ | |
85 | fileName.ReplaceAll("AliESDs.root", "pyxsec.root"); | |
86 | } | |
87 | else if(fileName.Contains("AliAOD.root")){ | |
88 | fileName.ReplaceAll("AliAOD.root", "pyxsec.root"); | |
89 | } | |
90 | else if(fileName.Contains("galice.root")){ | |
91 | // for running with galice and kinematics alone... | |
92 | fileName.ReplaceAll("galice.root", "pyxsec.root"); | |
93 | } | |
94 | ||
95 | ||
96 | TFile *fxsec = TFile::Open(fileName.Data()); | |
97 | if(!fxsec){ | |
98 | AliInfo(Form("%s:%d %s not found in the Input",(char*)__FILE__,__LINE__,fileName.Data())); | |
99 | // not a severe condition we just do not have the information... | |
100 | return kTRUE; | |
101 | } | |
102 | TTree *xtree = (TTree*)fxsec->Get("Xsection"); | |
103 | if(!xtree){ | |
104 | AliWarning(Form("%s:%d tree not found in the pyxsec.root",(char*)__FILE__,__LINE__)); | |
105 | return kTRUE; | |
106 | } | |
107 | xtree->SetBranchAddress("xsection",&xsection); | |
108 | xtree->SetBranchAddress("ntrials",&ntrials); | |
109 | xtree->GetEntry(0); | |
110 | ((TProfile*)(fHistList->FindObject("h1Xsec")))->Fill("<#sigma>",xsection); | |
111 | } | |
112 | return kTRUE; | |
113 | } | |
114 | ||
115 | ||
116 | ||
117 | //____________________________________________________________________ | |
118 | AliAnalysisTaskMCParticleFilter::AliAnalysisTaskMCParticleFilter(const char* name): | |
119 | AliAnalysisTaskSE(name), | |
120 | fTrackFilterMother(0x0), | |
121 | fAODMcHeader(0x0), | |
122 | fAODMcParticles(0x0), | |
123 | fHistList(0x0) | |
124 | { | |
125 | // Default constructor | |
126 | DefineOutput(1, TList::Class()); | |
127 | } | |
128 | ||
129 | /* | |
130 | //____________________________________________________________________ | |
131 | AliAnalysisTaskMCParticleFilter::AliAnalysisTaskMCParticleFilter(const AliAnalysisTaskMCParticleFilter& obj): | |
132 | AliAnalysisTaskSE(obj), | |
133 | fTrackFilterMother(obj.fTrackFilterMother) | |
134 | { | |
135 | // Copy constructor | |
136 | } | |
137 | */ | |
138 | //____________________________________________________________________ | |
139 | AliAnalysisTaskMCParticleFilter::~AliAnalysisTaskMCParticleFilter() | |
140 | { | |
141 | ||
142 | if(fAODMcHeader){ | |
143 | delete fAODMcHeader; | |
144 | } | |
145 | if(fAODMcParticles){ | |
146 | fAODMcParticles->Delete(); | |
147 | delete fAODMcParticles; | |
148 | } | |
149 | } | |
150 | ||
151 | /* | |
152 | //____________________________________________________________________ | |
153 | AliAnalysisTaskMCParticleFilter& AliAnalysisTaskMCParticleFilter::operator=(const AliAnalysisTaskMCParticleFilter& other) | |
154 | { | |
155 | // Assignment | |
156 | if(this!=&other) { | |
157 | AliAnalysisTaskSE::operator=(other); | |
158 | fTrackFilterMother = other.fTrackFilterMother; | |
159 | } | |
160 | return *this; | |
161 | } | |
162 | */ | |
163 | //____________________________________________________________________ | |
164 | void AliAnalysisTaskMCParticleFilter::UserCreateOutputObjects() | |
165 | { | |
166 | // Create the output container | |
167 | PostData(1,fHistList); | |
168 | ||
169 | if (OutputTree()&&fTrackFilterMother) | |
170 | OutputTree()->GetUserInfo()->Add(fTrackFilterMother); | |
171 | ||
172 | // this part is mainly needed to set the MCEventHandler | |
173 | // to the AODHandler, this will not be needed when | |
174 | // AODHandler goes to ANALYSISalice | |
175 | // setting in the steering macro will not work on proof :( | |
176 | // so we have to do it in a task | |
177 | ||
178 | // the branch booking can also go into the AODHandler then | |
179 | ||
180 | ||
181 | // mcparticles | |
182 | fAODMcParticles = new TClonesArray("AliAODMCParticle", 0); | |
183 | fAODMcParticles->SetName(AliAODMCParticle::StdBranchName()); | |
184 | AddAODBranch("TClonesArray",&fAODMcParticles); | |
185 | ||
186 | // MC header... | |
187 | fAODMcHeader = new AliAODMCHeader(); | |
188 | fAODMcHeader->SetName(AliAODMCHeader::StdBranchName()); | |
189 | AddAODBranch("AliAODMCHeader",&fAODMcHeader); | |
190 | ||
191 | AliMCEventHandler *mcH = (AliMCEventHandler*) ((AliAnalysisManager::GetAnalysisManager())->GetMCtruthEventHandler()); | |
192 | AliAODHandler *aodH = dynamic_cast<AliAODHandler*> ((AliAnalysisManager::GetAnalysisManager())->GetOutputEventHandler()); | |
193 | if(!aodH){ | |
194 | AliWarning("Could not get AODHandler"); | |
195 | return; | |
196 | } | |
197 | aodH->SetMCEventHandler(mcH); | |
198 | ||
199 | ||
200 | // these are histograms, for averaging and summing | |
201 | // do it via histograms to be PROOF-proof | |
202 | // which merges the results from different workers | |
203 | // histos are not saved reside only in memory | |
204 | ||
205 | ||
206 | ||
207 | fHistList = new TList(); | |
208 | TProfile *h1Xsec = new TProfile("h1Xsec","xsec from pyxsec.root",1,0,1); | |
209 | h1Xsec->GetXaxis()->SetBinLabel(1,"<#sigma>"); | |
210 | fHistList->Add(h1Xsec); | |
211 | TH1F* h1Trials = new TH1F("h1Trials","trials from MC header",1,0,1); | |
212 | h1Trials->GetXaxis()->SetBinLabel(1,"#sum{ntrials}"); | |
213 | fHistList->Add(h1Trials); | |
214 | ||
215 | ||
216 | } | |
217 | ||
218 | //____________________________________________________________________ | |
219 | void AliAnalysisTaskMCParticleFilter::UserExec(Option_t */*option*/) | |
220 | { | |
221 | // Execute analysis for current event | |
222 | // | |
223 | ||
224 | // Fill AOD tracks from Kinematic stack | |
225 | ||
226 | // get AliAOD Event | |
227 | AliAODEvent* aod = AODEvent(); | |
228 | if (!aod) { | |
229 | AliWarning("No Output Handler connected, doing nothing !") ; | |
230 | return; | |
231 | } | |
232 | ||
233 | AliMCEventHandler *mcH = (AliMCEventHandler*) ((AliAnalysisManager::GetAnalysisManager())->GetMCtruthEventHandler()); | |
234 | if(!mcH){ | |
235 | AliWarning("No MC handler Found"); | |
236 | return; | |
237 | } | |
238 | ||
239 | AliAODHandler *aodH = dynamic_cast<AliAODHandler*> ((AliAnalysisManager::GetAnalysisManager())->GetOutputEventHandler()); | |
240 | if(!aodH){ | |
241 | AliWarning("Could not get AODHandler"); | |
242 | return; | |
243 | } | |
244 | ||
245 | ||
246 | ||
247 | // fetch the output | |
248 | // Fill control histos | |
249 | ||
250 | // tmp array for holding the mctracks | |
251 | // need to set mother and duagther __before__ | |
252 | // filling in the tree | |
253 | ||
254 | AliMCEvent *mcE = MCEvent(); | |
255 | ||
256 | if(!mcE){ | |
257 | AliWarning("No MC event Found"); | |
258 | return; | |
259 | } | |
260 | ||
261 | Int_t np = mcE->GetNumberOfTracks(); | |
262 | Int_t nprim = mcE->GetNumberOfPrimaries(); | |
263 | // TODO ADD MC VERTEX | |
264 | ||
265 | // Get the proper MC Collision Geometry | |
266 | AliGenEventHeader* mcEH = mcE->GenEventHeader(); | |
267 | ||
268 | AliGenPythiaEventHeader *pyH = dynamic_cast<AliGenPythiaEventHeader*>(mcEH); | |
269 | AliGenHijingEventHeader *hiH = 0; | |
270 | AliCollisionGeometry *colG = 0; | |
271 | AliGenDPMjetEventHeader *dpmH = 0; | |
272 | // it can be only one save some casts | |
273 | // assuming PYTHIA and HIJING are the most likely ones... | |
274 | if(!pyH){ | |
275 | hiH = dynamic_cast<AliGenHijingEventHeader*>(mcEH); | |
276 | if(!hiH){ | |
277 | dpmH = dynamic_cast<AliGenDPMjetEventHeader*>(mcEH); | |
278 | } | |
279 | } | |
280 | ||
281 | if (hiH || dpmH) colG = dynamic_cast<AliCollisionGeometry*>(mcEH); | |
282 | ||
283 | // fetch the trials on a event by event basis, not from pyxsec.root otherwise | |
284 | // we will get a problem when running on proof since Notify may be called | |
285 | // more than once per file | |
286 | // consider storing this information in the AOD output via AliAODHandler | |
287 | Float_t ntrials = 0; | |
288 | if (!colG) { | |
289 | AliGenCocktailEventHeader *ccEH = dynamic_cast<AliGenCocktailEventHeader *>(mcEH); | |
290 | if (ccEH) { | |
291 | TList *genHeaders = ccEH->GetHeaders(); | |
292 | for (int imch=0; imch<genHeaders->GetEntries(); imch++) { | |
293 | if(!pyH)pyH = dynamic_cast<AliGenPythiaEventHeader*>(genHeaders->At(imch)); | |
294 | if(!hiH)hiH = dynamic_cast<AliGenHijingEventHeader*>(genHeaders->At(imch)); | |
295 | if(!colG)colG = dynamic_cast<AliCollisionGeometry *>(genHeaders->At(imch)); | |
296 | if(!dpmH)dpmH = dynamic_cast<AliGenDPMjetEventHeader*>(genHeaders->At(imch)); | |
297 | } | |
298 | } | |
299 | } | |
300 | ||
301 | // take the trials from the p+p event | |
302 | if(hiH)ntrials = hiH->Trials(); | |
303 | if(dpmH)ntrials = dpmH->Trials(); | |
304 | if(pyH)ntrials = pyH->Trials(); | |
305 | if(ntrials)((TH1F*)(fHistList->FindObject("h1Trials")))->Fill("#sum{ntrials}",ntrials); | |
306 | ||
307 | ||
308 | ||
309 | ||
310 | if (colG) { | |
311 | fAODMcHeader->SetReactionPlaneAngle(colG->ReactionPlaneAngle()); | |
312 | AliInfo(Form("Found Collision Geometry. Got Reaction Plane %lf\n", colG->ReactionPlaneAngle())); | |
313 | } | |
314 | ||
315 | ||
316 | ||
317 | // check varibales for charm need all daughters | |
318 | static int iTaken = 0; | |
319 | static int iAll = 0; | |
320 | static int iCharm = 0; | |
321 | ||
322 | ||
323 | Int_t j=0; | |
324 | for (Int_t ip = 0; ip < np; ip++){ | |
325 | AliMCParticle* mcpart = (AliMCParticle*) mcE->GetTrack(ip); | |
326 | TParticle* part = mcpart->Particle(); | |
327 | Float_t xv = part->Vx(); | |
328 | Float_t yv = part->Vy(); | |
329 | Float_t zv = part->Vz(); | |
330 | Float_t rv = TMath::Sqrt(xv * xv + yv * yv); | |
331 | ||
332 | Bool_t write = kFALSE; | |
333 | ||
334 | if (ip < nprim) { | |
335 | // Select the primary event | |
336 | write = kTRUE; | |
337 | } else if (part->GetUniqueID() == kPDecay) { | |
338 | // Particles from decay | |
339 | // Check that the decay chain ends at a primary particle | |
340 | AliMCParticle* mother = mcpart; | |
341 | Int_t imo = mcpart->GetMother(); | |
342 | while((imo >= nprim) && (mother->GetUniqueID() == kPDecay)) { | |
343 | mother = (AliMCParticle*) mcE->GetTrack(imo); | |
344 | imo = mother->GetMother(); | |
345 | } | |
346 | // Select according to pseudorapidity and production point of primary ancestor | |
347 | if (imo < nprim && Select(((AliMCParticle*) mcE->GetTrack(imo))->Particle(), rv, zv))write = kTRUE; | |
348 | } else if (part->GetUniqueID() == kPPair) { | |
349 | // Now look for pair production | |
350 | Int_t imo = mcpart->GetMother(); | |
351 | if (imo < nprim) { | |
352 | // Select, if the gamma is a primary | |
353 | write = kTRUE; | |
354 | } else { | |
355 | // Check if the gamma comes from the decay chain of a primary particle | |
356 | AliMCParticle* mother = (AliMCParticle*) mcE->GetTrack(imo); | |
357 | imo = mother->GetMother(); | |
358 | while((imo >= nprim) && (mother->GetUniqueID() == kPDecay)) { | |
359 | mother = (AliMCParticle*) mcE->GetTrack(imo); | |
360 | imo = mother->GetMother(); | |
361 | } | |
362 | // Select according to pseudorapidity and production point | |
363 | if (imo < nprim && Select(mother->Particle(), rv, zv)) | |
364 | write = kTRUE; | |
365 | } | |
366 | } | |
367 | /* | |
368 | else if (part->GetUniqueID() == 13){ | |
369 | // Evaporation | |
370 | // Check that we end at a primary particle | |
371 | TParticle* mother = part; | |
372 | Int_t imo = part->GetFirstMother(); | |
373 | while((imo >= nprim) && ((mother->GetUniqueID() == 4 ) || ( mother->GetUniqueID() == 13))) { | |
374 | mother = mcE->Stack()->Particle(imo); | |
375 | imo = mother->GetFirstMother(); | |
376 | } | |
377 | // Select according to pseudorapidity and production point | |
378 | if (imo < nprim && Select(mother, rv, zv)) | |
379 | write = kTRUE; | |
380 | } | |
381 | */ | |
382 | if (write) { | |
383 | if(mcH)mcH->SelectParticle(ip); | |
384 | j++; | |
385 | ||
386 | // debug info to check fro charm daugthers | |
387 | if((TMath::Abs(part->GetPdgCode()))==411){ | |
388 | iCharm++; | |
389 | Int_t d0 = mcpart->GetFirstDaughter(); | |
390 | Int_t d1 = mcpart->GetLastDaughter(); | |
391 | if(d0>0&&d1>0){ | |
392 | for(int id = d0;id <= d1;id++){ | |
393 | iAll++; | |
394 | if(mcH->IsParticleSelected(id))iTaken++; | |
395 | } | |
396 | } | |
397 | }// if charm | |
398 | } | |
399 | } | |
400 | ||
401 | AliInfo(Form("Taken daughters %d/%d of %d charm",iTaken,iAll,iCharm)); | |
402 | ||
403 | aodH->StoreMCParticles(); | |
404 | PostData(1,fHistList); | |
405 | ||
406 | return; | |
407 | } | |
408 | ||
409 | void AliAnalysisTaskMCParticleFilter::Terminate(Option_t */*option*/){ | |
410 | // | |
411 | // Terminate the execution save the PYTHIA x_section to the UserInfo() | |
412 | // | |
413 | ||
414 | ||
415 | fHistList = (TList*)GetOutputData(1); | |
416 | if(!fHistList){ | |
417 | Printf("%s:%d Output list not found",(char*)__FILE__,__LINE__); | |
418 | return; | |
419 | } | |
420 | ||
421 | TProfile *hXsec = ((TProfile*)(fHistList->FindObject("h1Xsec"))); | |
422 | TH1F* hTrials = ((TH1F*)(fHistList->FindObject("h1Trials"))); | |
423 | if(!hXsec)return; | |
424 | if(!hTrials)return; | |
425 | ||
426 | Float_t xsec = hXsec->GetBinContent(1); | |
427 | Float_t trials = hTrials->Integral(); | |
428 | AliInfo(Form("Average -section %.4E and total number of trials %E",xsec,trials)); | |
429 | ||
430 | } | |
431 | ||
432 | Bool_t AliAnalysisTaskMCParticleFilter::Select(TParticle* part, Float_t rv, Float_t zv) | |
433 | { | |
434 | // Selection accoring to eta of the mother and production point | |
435 | // This has to be refined !!!!!! | |
436 | ||
437 | // Esp if we don't have collisison in the central barrel but e.g. beam gas | |
438 | // return kTRUE; | |
439 | ||
440 | Float_t eta = part->Eta(); | |
441 | ||
442 | // central barrel consider everything in the ITS... | |
443 | // large eta window for smeared vertex and SPD acceptance (2 at z = 0) | |
444 | // larger for V0s in the TPC | |
445 | // if (TMath::Abs(eta) < 2.5 && rv < 250. && TMath::Abs(zv)<255)return kTRUE; | |
446 | ||
447 | if (TMath::Abs(eta) < 2.5 && rv < 170)return kTRUE; | |
448 | ||
449 | // Andreas' Cuts | |
450 | // if (TMath::Abs(eta) < 1. && rv < 170)return kTRUE; | |
451 | ||
452 | ||
453 | ||
454 | // Muon arm | |
455 | if(eta > -4.2 && eta < -2.3 && zv > -500.)return kTRUE; // Muon arms | |
456 | ||
457 | // PMD acceptance 2.3 <= eta < = 3.5 | |
458 | // if(eta>2.0&&eta<3.7)return kTRUE; | |
459 | ||
460 | return kFALSE; | |
461 | ||
462 | } | |
463 |