1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
17 // Analysis task for Kinematic filtering
18 // Fill AODtrackMC tracks from Kinematic stack
23 #include "TParticle.h"
24 #include "TParameter.h"
31 #include "AliAnalysisTaskMCParticleFilter.h"
32 #include "AliAnalysisManager.h"
33 #include "AliAnalysisFilter.h"
34 #include "AliHeader.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"
54 ClassImp(AliAnalysisTaskMCParticleFilter)
56 ////////////////////////////////////////////////////////////////////////
58 //____________________________________________________________________
59 AliAnalysisTaskMCParticleFilter::AliAnalysisTaskMCParticleFilter():
61 fTrackFilterMother(0x0),
66 // Default constructor
69 Bool_t AliAnalysisTaskMCParticleFilter::Notify()
72 // Implemented Notify() to read the cross sections
75 AliAnalysisManager *mgr = AliAnalysisManager::GetAnalysisManager();
76 TTree *tree = mgr->GetTree();
77 Double_t xsection = 0;
80 TFile *curfile = tree->GetCurrentFile();
82 Error("Notify","No current file");
86 TString fileName(curfile->GetName());
87 TString datafile = mgr->GetInputEventHandler()->GetInputFileName();
88 if (fileName.Contains(datafile)) {
89 fileName.ReplaceAll(datafile, "pyxsec.root");
91 else if(fileName.Contains("AliESDs.root")){
92 fileName.ReplaceAll("AliESDs.root", "pyxsec.root");
94 else if(fileName.Contains("AliAOD.root")){
95 fileName.ReplaceAll("AliAOD.root", "pyxsec.root");
97 else if(fileName.Contains("galice.root")){
98 // for running with galice and kinematics alone...
99 fileName.ReplaceAll("galice.root", "pyxsec.root");
103 TFile *fxsec = TFile::Open(fileName.Data());
105 AliInfo(Form("%s:%d %s not found in the Input",(char*)__FILE__,__LINE__,fileName.Data()));
106 // not a severe condition we just do not have the information...
109 TTree *xtree = (TTree*)fxsec->Get("Xsection");
111 AliWarning(Form("%s:%d tree not found in the pyxsec.root",(char*)__FILE__,__LINE__));
114 xtree->SetBranchAddress("xsection",&xsection);
115 xtree->SetBranchAddress("ntrials",&ntrials);
117 ((TProfile*)(fHistList->FindObject("h1Xsec")))->Fill("<#sigma>",xsection);
124 //____________________________________________________________________
125 AliAnalysisTaskMCParticleFilter::AliAnalysisTaskMCParticleFilter(const char* name):
126 AliAnalysisTaskSE(name),
127 fTrackFilterMother(0x0),
129 fAODMcParticles(0x0),
132 // Default constructor
133 DefineOutput(1, TList::Class());
137 //____________________________________________________________________
138 AliAnalysisTaskMCParticleFilter::AliAnalysisTaskMCParticleFilter(const AliAnalysisTaskMCParticleFilter& obj):
139 AliAnalysisTaskSE(obj),
140 fTrackFilterMother(obj.fTrackFilterMother)
145 //____________________________________________________________________
146 AliAnalysisTaskMCParticleFilter::~AliAnalysisTaskMCParticleFilter()
153 fAODMcParticles->Delete();
154 delete fAODMcParticles;
159 //____________________________________________________________________
160 AliAnalysisTaskMCParticleFilter& AliAnalysisTaskMCParticleFilter::operator=(const AliAnalysisTaskMCParticleFilter& other)
164 AliAnalysisTaskSE::operator=(other);
165 fTrackFilterMother = other.fTrackFilterMother;
170 //____________________________________________________________________
171 void AliAnalysisTaskMCParticleFilter::UserCreateOutputObjects()
173 // Create the output container
176 if (OutputTree()&&fTrackFilterMother)
177 OutputTree()->GetUserInfo()->Add(fTrackFilterMother);
179 // this part is mainly needed to set the MCEventHandler
180 // to the AODHandler, this will not be needed when
181 // AODHandler goes to ANALYSISalice
182 // setting in the steering macro will not work on proof :(
183 // so we have to do it in a task
185 // the branch booking can also go into the AODHandler then
189 fAODMcParticles = new TClonesArray("AliAODMCParticle", 0);
190 fAODMcParticles->SetName(AliAODMCParticle::StdBranchName());
191 AddAODBranch("TClonesArray",&fAODMcParticles);
194 fAODMcHeader = new AliAODMCHeader();
195 fAODMcHeader->SetName(AliAODMCHeader::StdBranchName());
196 AddAODBranch("AliAODMCHeader",&fAODMcHeader);
198 AliMCEventHandler *mcH = (AliMCEventHandler*) ((AliAnalysisManager::GetAnalysisManager())->GetMCtruthEventHandler());
199 AliAODHandler *aodH = dynamic_cast<AliAODHandler*> ((AliAnalysisManager::GetAnalysisManager())->GetOutputEventHandler());
201 AliWarning("Could not get AODHandler");
204 aodH->SetMCEventHandler(mcH);
207 // these are histograms, for averaging and summing
208 // do it via histograms to be PROOF-proof
209 // which merges the results from different workers
210 // histos are not saved reside only in memory
214 fHistList = new TList();
215 TProfile *h1Xsec = new TProfile("h1Xsec","xsec from pyxsec.root",1,0,1);
216 h1Xsec->GetXaxis()->SetBinLabel(1,"<#sigma>");
217 fHistList->Add(h1Xsec);
218 TH1F* h1Trials = new TH1F("h1Trials","trials from MC header",1,0,1);
219 h1Trials->GetXaxis()->SetBinLabel(1,"#sum{ntrials}");
220 fHistList->Add(h1Trials);
222 PostData(1,fHistList);
226 //____________________________________________________________________
227 void AliAnalysisTaskMCParticleFilter::UserExec(Option_t */*option*/)
229 // Execute analysis for current event
232 // Fill AOD tracks from Kinematic stack
233 PostData(1,fHistList);
236 AliAODEvent* aod = AODEvent();
238 AliWarning("No Output Handler connected, doing nothing !") ;
242 AliMCEventHandler *mcH = (AliMCEventHandler*) ((AliAnalysisManager::GetAnalysisManager())->GetMCtruthEventHandler());
244 AliWarning("No MC handler Found");
248 AliAODHandler *aodH = dynamic_cast<AliAODHandler*> ((AliAnalysisManager::GetAnalysisManager())->GetOutputEventHandler());
250 AliWarning("Could not get AODHandler");
257 // Fill control histos
259 // tmp array for holding the mctracks
260 // need to set mother and duagther __before__
261 // filling in the tree
263 AliMCEvent *mcE = MCEvent();
266 AliWarning("No MC event Found");
270 Int_t np = mcE->GetNumberOfTracks();
271 Int_t nprim = mcE->GetNumberOfPrimaries();
272 // TODO ADD MC VERTEX
274 // Get the proper MC Collision Geometry
275 AliGenEventHeader* mcEH = mcE->GenEventHeader();
277 AliGenPythiaEventHeader *pyH = dynamic_cast<AliGenPythiaEventHeader*>(mcEH);
278 AliGenHijingEventHeader *hiH = 0;
279 AliCollisionGeometry *colG = 0;
280 AliGenDPMjetEventHeader *dpmH = 0;
281 AliGenEventHeaderTunedPbPb *tunedH = 0;
283 // it can be only one save some casts
284 // assuming PYTHIA and HIJING are the most likely ones...
286 hiH = dynamic_cast<AliGenHijingEventHeader*>(mcEH);
288 dpmH = dynamic_cast<AliGenDPMjetEventHeader*>(mcEH);
290 tunedH = dynamic_cast<AliGenEventHeaderTunedPbPb*>(mcEH);
295 if (hiH || dpmH) colG = dynamic_cast<AliCollisionGeometry*>(mcEH);
297 // fetch the trials on a event by event basis, not from pyxsec.root otherwise
298 // we will get a problem when running on proof since Notify may be called
299 // more than once per file
300 // consider storing this information in the AOD output via AliAODHandler
303 AliGenCocktailEventHeader *ccEH = dynamic_cast<AliGenCocktailEventHeader *>(mcEH);
305 TList *genHeaders = ccEH->GetHeaders();
306 for (int imch=0; imch<genHeaders->GetEntries(); imch++) {
307 if(!pyH)pyH = dynamic_cast<AliGenPythiaEventHeader*>(genHeaders->At(imch));
308 if(!hiH)hiH = dynamic_cast<AliGenHijingEventHeader*>(genHeaders->At(imch));
309 if(!colG)colG = dynamic_cast<AliCollisionGeometry *>(genHeaders->At(imch));
310 if(!dpmH)dpmH = dynamic_cast<AliGenDPMjetEventHeader*>(genHeaders->At(imch));
315 // take the trials from the p+p event
316 if(hiH)ntrials = hiH->Trials();
317 if(dpmH)ntrials = dpmH->Trials();
318 if(pyH)ntrials = pyH->Trials();
319 if(ntrials)((TH1F*)(fHistList->FindObject("h1Trials")))->Fill("#sum{ntrials}",ntrials);
325 fAODMcHeader->SetReactionPlaneAngle(colG->ReactionPlaneAngle());
326 AliInfo(Form("Found Collision Geometry. Got Reaction Plane %lf\n", colG->ReactionPlaneAngle()));
329 fAODMcHeader->SetReactionPlaneAngle(tunedH->GetPsi2());
330 fAODMcHeader->SetCrossSection(tunedH->GetCentrality());
335 for (Int_t ip = 0; ip < np; ip++){
336 AliMCParticle* mcpart = (AliMCParticle*) mcE->GetTrack(ip);
337 TParticle* part = mcpart->Particle();
338 Float_t xv = part->Vx();
339 Float_t yv = part->Vy();
340 Float_t zv = part->Vz();
341 Float_t rv = TMath::Sqrt(xv * xv + yv * yv);
343 Bool_t write = kFALSE;
346 // Select the primary event
348 } else if (part->GetUniqueID() == kPDecay) {
349 // Particles from decay
350 // Check that the decay chain ends at a primary particle
351 AliMCParticle* mother = mcpart;
352 Int_t imo = mcpart->GetMother();
353 while((imo >= nprim) && (mother->GetUniqueID() == kPDecay)) {
354 mother = (AliMCParticle*) mcE->GetTrack(imo);
355 imo = mother->GetMother();
357 // Select according to pseudorapidity and production point of primary ancestor
358 if (imo < nprim)write = kTRUE;
359 // if(!Select(((AliMCParticle*) mcE->GetTrack(imo))->Particle(), rv, zv))write = kFALSE; // selection on eta and phi of the mother
360 } else if (part->GetUniqueID() == kPPair) {
361 // Now look for pair production
362 Int_t imo = mcpart->GetMother();
364 // Select, if the gamma is a primary
367 // Check if the gamma comes from the decay chain of a primary particle
368 AliMCParticle* mother = (AliMCParticle*) mcE->GetTrack(imo);
369 imo = mother->GetMother();
370 while((imo >= nprim) && (mother->GetUniqueID() == kPDecay)) {
371 mother = (AliMCParticle*) mcE->GetTrack(imo);
372 imo = mother->GetMother();
374 // Select according to pseudorapidity and production point
375 if (imo < nprim && Select(mother->Particle(), rv, zv))
381 if(mcH)mcH->SelectParticle(ip);
388 // check varibales for charm need all daughters
389 static int iTaken = 0;
391 static int iCharm = 0;
393 for (Int_t ip = 0; ip < np; ip++){
394 AliMCParticle* mcpart = (AliMCParticle*) mcE->GetTrack(ip);
395 TParticle* part = mcpart->Particle();
396 // debug info to check fro charm daugthers
397 if((TMath::Abs(part->GetPdgCode()))==411){
399 Int_t d0 = part->GetFirstDaughter();
400 Int_t d1 = part->GetLastDaughter();
402 for(int id = d0;id <= d1;id++){
404 if(mcH->IsParticleSelected(id)){
406 Printf("> %d/%d Taken",id,nprim);
407 PrintMCParticle( (AliMCParticle*)mcE->GetTrack(id),id);
410 Printf("> %d/%d NOT Taken",id,nprim);
411 PrintMCParticle( (AliMCParticle*)mcE->GetTrack(id),id);
416 AliInfo(Form("Taken daughters %d/%d of %d charm",iTaken,iAll,iCharm));
421 aodH->StoreMCParticles();
426 void AliAnalysisTaskMCParticleFilter::Terminate(Option_t */*option*/){
428 // Terminate the execution save the PYTHIA x_section to the UserInfo()
432 fHistList = (TList*)GetOutputData(1);
434 Printf("%s:%d Output list not found",(char*)__FILE__,__LINE__);
438 TProfile *hXsec = ((TProfile*)(fHistList->FindObject("h1Xsec")));
439 TH1F* hTrials = ((TH1F*)(fHistList->FindObject("h1Trials")));
443 Float_t xsec = hXsec->GetBinContent(1);
444 Float_t trials = hTrials->Integral();
445 AliInfo(Form("Average -section %.4E and total number of trials %E",xsec,trials));
449 Bool_t AliAnalysisTaskMCParticleFilter::Select(TParticle* part, Float_t rv, Float_t zv)
451 // Selection accoring to eta of the mother and production point
452 // This has to be refined !!!!!!
454 // Esp if we don't have collisison in the central barrel but e.g. beam gas
457 Float_t eta = part->Eta();
459 // central barrel consider everything in the ITS...
460 // large eta window for smeared vertex and SPD acceptance (2 at z = 0)
461 // larger for V0s in the TPC
462 // if (TMath::Abs(eta) < 2.5 && rv < 250. && TMath::Abs(zv)<255)return kTRUE;
464 if (TMath::Abs(eta) < 2.5 && rv < 170)return kTRUE;
467 // if (TMath::Abs(eta) < 1. && rv < 170)return kTRUE;
472 if(eta > -4.2 && eta < -2.3 && zv > -500.)return kTRUE; // Muon arms
474 // PMD acceptance 2.3 <= eta < = 3.5
475 // if(eta>2.0&&eta<3.7)return kTRUE;
481 void AliAnalysisTaskMCParticleFilter::PrintMCParticle(const AliMCParticle *mcp,Int_t np){
483 const TParticle *p = mcp->Particle();
484 Printf("Nr.%d --- Status %d ---- Mother1 %d Mother2 %d Daughter1 %d Daughte\
486 np,p->GetStatusCode(),p->GetMother(0),p->GetMother(1),p->GetDaughter \
487 (0),p->GetDaughter(1));
488 Printf("Eta %3.3f Phi %3.3f ",p->Eta(),p->Phi());
490 Printf("---------------------------------------");