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"
53 ClassImp(AliAnalysisTaskMCParticleFilter)
55 ////////////////////////////////////////////////////////////////////////
57 //____________________________________________________________________
58 AliAnalysisTaskMCParticleFilter::AliAnalysisTaskMCParticleFilter():
60 fTrackFilterMother(0x0),
65 // Default constructor
68 Bool_t AliAnalysisTaskMCParticleFilter::Notify()
71 // Implemented Notify() to read the cross sections
74 AliAnalysisManager *mgr = AliAnalysisManager::GetAnalysisManager();
75 TTree *tree = mgr->GetTree();
76 Double_t xsection = 0;
79 TFile *curfile = tree->GetCurrentFile();
81 Error("Notify","No current file");
85 TString fileName(curfile->GetName());
86 TString datafile = mgr->GetInputEventHandler()->GetInputFileName();
87 if (fileName.Contains(datafile)) {
88 fileName.ReplaceAll(datafile, "pyxsec.root");
90 else if(fileName.Contains("AliESDs.root")){
91 fileName.ReplaceAll("AliESDs.root", "pyxsec.root");
93 else if(fileName.Contains("AliAOD.root")){
94 fileName.ReplaceAll("AliAOD.root", "pyxsec.root");
96 else if(fileName.Contains("galice.root")){
97 // for running with galice and kinematics alone...
98 fileName.ReplaceAll("galice.root", "pyxsec.root");
102 TFile *fxsec = TFile::Open(fileName.Data());
104 AliInfo(Form("%s:%d %s not found in the Input",(char*)__FILE__,__LINE__,fileName.Data()));
105 // not a severe condition we just do not have the information...
108 TTree *xtree = (TTree*)fxsec->Get("Xsection");
110 AliWarning(Form("%s:%d tree not found in the pyxsec.root",(char*)__FILE__,__LINE__));
113 xtree->SetBranchAddress("xsection",&xsection);
114 xtree->SetBranchAddress("ntrials",&ntrials);
116 ((TProfile*)(fHistList->FindObject("h1Xsec")))->Fill("<#sigma>",xsection);
123 //____________________________________________________________________
124 AliAnalysisTaskMCParticleFilter::AliAnalysisTaskMCParticleFilter(const char* name):
125 AliAnalysisTaskSE(name),
126 fTrackFilterMother(0x0),
128 fAODMcParticles(0x0),
131 // Default constructor
132 DefineOutput(1, TList::Class());
136 //____________________________________________________________________
137 AliAnalysisTaskMCParticleFilter::AliAnalysisTaskMCParticleFilter(const AliAnalysisTaskMCParticleFilter& obj):
138 AliAnalysisTaskSE(obj),
139 fTrackFilterMother(obj.fTrackFilterMother)
144 //____________________________________________________________________
145 AliAnalysisTaskMCParticleFilter::~AliAnalysisTaskMCParticleFilter()
152 fAODMcParticles->Delete();
153 delete fAODMcParticles;
158 //____________________________________________________________________
159 AliAnalysisTaskMCParticleFilter& AliAnalysisTaskMCParticleFilter::operator=(const AliAnalysisTaskMCParticleFilter& other)
163 AliAnalysisTaskSE::operator=(other);
164 fTrackFilterMother = other.fTrackFilterMother;
169 //____________________________________________________________________
170 void AliAnalysisTaskMCParticleFilter::UserCreateOutputObjects()
172 // Create the output container
175 if (OutputTree()&&fTrackFilterMother)
176 OutputTree()->GetUserInfo()->Add(fTrackFilterMother);
178 // this part is mainly needed to set the MCEventHandler
179 // to the AODHandler, this will not be needed when
180 // AODHandler goes to ANALYSISalice
181 // setting in the steering macro will not work on proof :(
182 // so we have to do it in a task
184 // the branch booking can also go into the AODHandler then
188 fAODMcParticles = new TClonesArray("AliAODMCParticle", 0);
189 fAODMcParticles->SetName(AliAODMCParticle::StdBranchName());
190 AddAODBranch("TClonesArray",&fAODMcParticles);
193 fAODMcHeader = new AliAODMCHeader();
194 fAODMcHeader->SetName(AliAODMCHeader::StdBranchName());
195 AddAODBranch("AliAODMCHeader",&fAODMcHeader);
197 AliMCEventHandler *mcH = (AliMCEventHandler*) ((AliAnalysisManager::GetAnalysisManager())->GetMCtruthEventHandler());
198 AliAODHandler *aodH = dynamic_cast<AliAODHandler*> ((AliAnalysisManager::GetAnalysisManager())->GetOutputEventHandler());
200 AliWarning("Could not get AODHandler");
203 aodH->SetMCEventHandler(mcH);
206 // these are histograms, for averaging and summing
207 // do it via histograms to be PROOF-proof
208 // which merges the results from different workers
209 // histos are not saved reside only in memory
213 fHistList = new TList();
214 TProfile *h1Xsec = new TProfile("h1Xsec","xsec from pyxsec.root",1,0,1);
215 h1Xsec->GetXaxis()->SetBinLabel(1,"<#sigma>");
216 fHistList->Add(h1Xsec);
217 TH1F* h1Trials = new TH1F("h1Trials","trials from MC header",1,0,1);
218 h1Trials->GetXaxis()->SetBinLabel(1,"#sum{ntrials}");
219 fHistList->Add(h1Trials);
221 PostData(1,fHistList);
225 //____________________________________________________________________
226 void AliAnalysisTaskMCParticleFilter::UserExec(Option_t */*option*/)
228 // Execute analysis for current event
231 // Fill AOD tracks from Kinematic stack
232 PostData(1,fHistList);
235 AliAODEvent* aod = AODEvent();
237 AliWarning("No Output Handler connected, doing nothing !") ;
241 AliMCEventHandler *mcH = (AliMCEventHandler*) ((AliAnalysisManager::GetAnalysisManager())->GetMCtruthEventHandler());
243 AliWarning("No MC handler Found");
247 AliAODHandler *aodH = dynamic_cast<AliAODHandler*> ((AliAnalysisManager::GetAnalysisManager())->GetOutputEventHandler());
249 AliWarning("Could not get AODHandler");
256 // Fill control histos
258 // tmp array for holding the mctracks
259 // need to set mother and duagther __before__
260 // filling in the tree
262 AliMCEvent *mcE = MCEvent();
265 AliWarning("No MC event Found");
269 Int_t np = mcE->GetNumberOfTracks();
270 Int_t nprim = mcE->GetNumberOfPrimaries();
271 // TODO ADD MC VERTEX
273 // Get the proper MC Collision Geometry
274 AliGenEventHeader* mcEH = mcE->GenEventHeader();
276 AliGenPythiaEventHeader *pyH = dynamic_cast<AliGenPythiaEventHeader*>(mcEH);
277 AliGenHijingEventHeader *hiH = 0;
278 AliCollisionGeometry *colG = 0;
279 AliGenDPMjetEventHeader *dpmH = 0;
280 // it can be only one save some casts
281 // assuming PYTHIA and HIJING are the most likely ones...
283 hiH = dynamic_cast<AliGenHijingEventHeader*>(mcEH);
285 dpmH = dynamic_cast<AliGenDPMjetEventHeader*>(mcEH);
289 if (hiH || dpmH) colG = dynamic_cast<AliCollisionGeometry*>(mcEH);
291 // fetch the trials on a event by event basis, not from pyxsec.root otherwise
292 // we will get a problem when running on proof since Notify may be called
293 // more than once per file
294 // consider storing this information in the AOD output via AliAODHandler
297 AliGenCocktailEventHeader *ccEH = dynamic_cast<AliGenCocktailEventHeader *>(mcEH);
299 TList *genHeaders = ccEH->GetHeaders();
300 for (int imch=0; imch<genHeaders->GetEntries(); imch++) {
301 if(!pyH)pyH = dynamic_cast<AliGenPythiaEventHeader*>(genHeaders->At(imch));
302 if(!hiH)hiH = dynamic_cast<AliGenHijingEventHeader*>(genHeaders->At(imch));
303 if(!colG)colG = dynamic_cast<AliCollisionGeometry *>(genHeaders->At(imch));
304 if(!dpmH)dpmH = dynamic_cast<AliGenDPMjetEventHeader*>(genHeaders->At(imch));
309 // take the trials from the p+p event
310 if(hiH)ntrials = hiH->Trials();
311 if(dpmH)ntrials = dpmH->Trials();
312 if(pyH)ntrials = pyH->Trials();
313 if(ntrials)((TH1F*)(fHistList->FindObject("h1Trials")))->Fill("#sum{ntrials}",ntrials);
319 fAODMcHeader->SetReactionPlaneAngle(colG->ReactionPlaneAngle());
320 AliInfo(Form("Found Collision Geometry. Got Reaction Plane %lf\n", colG->ReactionPlaneAngle()));
327 for (Int_t ip = 0; ip < np; ip++){
328 AliMCParticle* mcpart = (AliMCParticle*) mcE->GetTrack(ip);
329 TParticle* part = mcpart->Particle();
330 Float_t xv = part->Vx();
331 Float_t yv = part->Vy();
332 Float_t zv = part->Vz();
333 Float_t rv = TMath::Sqrt(xv * xv + yv * yv);
335 Bool_t write = kFALSE;
338 // Select the primary event
340 } else if (part->GetUniqueID() == kPDecay) {
341 // Particles from decay
342 // Check that the decay chain ends at a primary particle
343 AliMCParticle* mother = mcpart;
344 Int_t imo = mcpart->GetMother();
345 while((imo >= nprim) && (mother->GetUniqueID() == kPDecay)) {
346 mother = (AliMCParticle*) mcE->GetTrack(imo);
347 imo = mother->GetMother();
349 // Select according to pseudorapidity and production point of primary ancestor
350 if (imo < nprim)write = kTRUE;
351 // if(!Select(((AliMCParticle*) mcE->GetTrack(imo))->Particle(), rv, zv))write = kFALSE; // selection on eta and phi of the mother
352 } else if (part->GetUniqueID() == kPPair) {
353 // Now look for pair production
354 Int_t imo = mcpart->GetMother();
356 // Select, if the gamma is a primary
359 // Check if the gamma comes from the decay chain of a primary particle
360 AliMCParticle* mother = (AliMCParticle*) mcE->GetTrack(imo);
361 imo = mother->GetMother();
362 while((imo >= nprim) && (mother->GetUniqueID() == kPDecay)) {
363 mother = (AliMCParticle*) mcE->GetTrack(imo);
364 imo = mother->GetMother();
366 // Select according to pseudorapidity and production point
367 if (imo < nprim && Select(mother->Particle(), rv, zv))
373 if(mcH)mcH->SelectParticle(ip);
380 // check varibales for charm need all daughters
381 static int iTaken = 0;
383 static int iCharm = 0;
385 for (Int_t ip = 0; ip < np; ip++){
386 AliMCParticle* mcpart = (AliMCParticle*) mcE->GetTrack(ip);
387 TParticle* part = mcpart->Particle();
388 // debug info to check fro charm daugthers
389 if((TMath::Abs(part->GetPdgCode()))==411){
391 Int_t d0 = part->GetFirstDaughter();
392 Int_t d1 = part->GetLastDaughter();
394 for(int id = d0;id <= d1;id++){
396 if(mcH->IsParticleSelected(id)){
398 Printf("> %d/%d Taken",id,nprim);
399 PrintMCParticle( (AliMCParticle*)mcE->GetTrack(id),id);
402 Printf("> %d/%d NOT Taken",id,nprim);
403 PrintMCParticle( (AliMCParticle*)mcE->GetTrack(id),id);
408 AliInfo(Form("Taken daughters %d/%d of %d charm",iTaken,iAll,iCharm));
413 aodH->StoreMCParticles();
418 void AliAnalysisTaskMCParticleFilter::Terminate(Option_t */*option*/){
420 // Terminate the execution save the PYTHIA x_section to the UserInfo()
424 fHistList = (TList*)GetOutputData(1);
426 Printf("%s:%d Output list not found",(char*)__FILE__,__LINE__);
430 TProfile *hXsec = ((TProfile*)(fHistList->FindObject("h1Xsec")));
431 TH1F* hTrials = ((TH1F*)(fHistList->FindObject("h1Trials")));
435 Float_t xsec = hXsec->GetBinContent(1);
436 Float_t trials = hTrials->Integral();
437 AliInfo(Form("Average -section %.4E and total number of trials %E",xsec,trials));
441 Bool_t AliAnalysisTaskMCParticleFilter::Select(TParticle* part, Float_t rv, Float_t zv)
443 // Selection accoring to eta of the mother and production point
444 // This has to be refined !!!!!!
446 // Esp if we don't have collisison in the central barrel but e.g. beam gas
449 Float_t eta = part->Eta();
451 // central barrel consider everything in the ITS...
452 // large eta window for smeared vertex and SPD acceptance (2 at z = 0)
453 // larger for V0s in the TPC
454 // if (TMath::Abs(eta) < 2.5 && rv < 250. && TMath::Abs(zv)<255)return kTRUE;
456 if (TMath::Abs(eta) < 2.5 && rv < 170)return kTRUE;
459 // if (TMath::Abs(eta) < 1. && rv < 170)return kTRUE;
464 if(eta > -4.2 && eta < -2.3 && zv > -500.)return kTRUE; // Muon arms
466 // PMD acceptance 2.3 <= eta < = 3.5
467 // if(eta>2.0&&eta<3.7)return kTRUE;
473 void AliAnalysisTaskMCParticleFilter::PrintMCParticle(const AliMCParticle *mcp,Int_t np){
475 const TParticle *p = mcp->Particle();
476 Printf("Nr.%d --- Status %d ---- Mother1 %d Mother2 %d Daughter1 %d Daughte\
478 np,p->GetStatusCode(),p->GetMother(0),p->GetMother(1),p->GetDaughter \
479 (0),p->GetDaughter(1));
480 Printf("Eta %3.3f Phi %3.3f ",p->Eta(),p->Phi());
482 Printf("---------------------------------------");