2 // This class is the task to check the
3 // Propagation and Update method used in the
4 // 1. AliExternalTrackParam
7 // Pure Monte-Carlo data used, not influence of detectors
9 // Input - TParticle + Array of track references - (Points alogn track trajectories)
10 // Output - Trees with track references - no histograms
11 // MC tree - test for material budget correction
12 // see function ProcessRefTracker
13 // MCupdate tree - test for correctness of propagation and update
14 // see function AliMCTrackingTestTask::FitTrackRefs
16 // Principle - Creates AliExternalTrackParam form 1 Track Refernece -
17 // Propagate it to other
18 // Magnetic field and the geometry has to be created before using it
33 #include <TTreeStream.h>
34 #include <AliAnalysisManager.h>
35 #include <AliESDInputHandler.h>
37 #include "AliMCEvent.h"
38 #include "AliMCEventHandler.h"
41 #include "AliMCTrackingTestTask.h"
42 #include "AliGenInfoMaker.h"
46 #include "AliMCInfo.h"
47 #include "AliESDRecInfo.h"
48 #include "AliTPCParamSR.h"
49 #include "AliTracker.h"
50 #include "AliTPCseed.h"
57 ClassImp(AliMCTrackingTestTask)
59 //________________________________________________________________________
60 AliMCTrackingTestTask::AliMCTrackingTestTask() :
62 fMCinfo(0), //! MC event handler
70 // Default constructor (should not be used)
74 AliMCTrackingTestTask::AliMCTrackingTestTask(const AliMCTrackingTestTask& /*info*/) :
76 fMCinfo(0), //! MC event handler
85 // Default constructor
91 //________________________________________________________________________
92 AliMCTrackingTestTask::AliMCTrackingTestTask(const char *name) :
93 AliAnalysisTask(name, "AliMCTrackingTestTask"),
94 fMCinfo(0), //! MC event handler
102 // Normal constructor
104 // Input slot #0 works with a TChain
105 DefineInput(0, TChain::Class());
106 // Output slot #0 writes into a TList
107 DefineOutput(0, TObjArray::Class());
112 AliMCTrackingTestTask::~AliMCTrackingTestTask(){
116 if (fDebugLevel>0) printf("AliMCTrackingTestTask::~AliMCTrackingTestTask\n");
117 if (fDebugStreamer) delete fDebugStreamer;
122 //________________________________________________________________________
123 void AliMCTrackingTestTask::ConnectInputData(Option_t *)
126 // Connect the input data
129 cout << "AnalysisTaskTPCCluster::ConnectInputData()" << endl;
131 TTree* tree=dynamic_cast<TTree*>(GetInputData(0));
133 //Printf("ERROR: Could not read chain from input slot 0");
136 AliESDInputHandler *esdH = dynamic_cast<AliESDInputHandler*> (AliAnalysisManager::GetAnalysisManager()->GetInputEventHandler());
138 //Printf("ERROR: Could not get ESDInputHandler");
141 fESD = esdH->GetEvent();
142 //Printf("*** CONNECTED NEW EVENT ****");
145 AliMCEventHandler* mcinfo = (AliMCEventHandler*) (AliAnalysisManager::GetAnalysisManager()->GetMCtruthEventHandler());
146 mcinfo->SetReadTR(kTRUE);
148 fMCinfo = mcinfo->MCEvent();
158 //________________________________________________________________________
159 void AliMCTrackingTestTask::CreateOutputObjects()
162 // Connect the output objects
165 cout << "AnalysisTaskTPCCluster::CreateOutputObjects()" << endl;
170 //________________________________________________________________________
171 void AliMCTrackingTestTask::Exec(Option_t *) {
173 // Execute analysis for current event
177 cout << "AliMCTrackingTestTask::Exec()" << endl;
180 // If MC has been connected
183 cout << "Not MC info\n" << endl;
195 //________________________________________________________________________
196 void AliMCTrackingTestTask::Terminate(Option_t *) {
201 printf("AliMCTrackingTestTask: Terminate() \n");
203 if (fDebugLevel>0) printf("AliMCtrackingTestTask::Terminate\n");
204 if (fDebugStreamer) delete fDebugStreamer;
211 TTreeSRedirector *AliMCTrackingTestTask::GetDebugStreamer(){
213 // Get Debug streamer
214 // In case debug streamer not yet initialized and StreamLevel>0 create new one
216 if (fStreamLevel==0) return 0;
217 if (fDebugStreamer) return fDebugStreamer;
220 dsName+="Debug.root";
221 dsName.ReplaceAll(" ","");
222 fDebugStreamer = new TTreeSRedirector(dsName.Data());
223 return fDebugStreamer;
231 AliExternalTrackParam * AliMCTrackingTestTask::MakeTrack(const AliTrackReference* ref, TParticle*part)
234 // Make track out of the track ref
235 // part - TParticle used to determine chargr
236 // the covariance matrix - equal 0 - starting from ideal MC position
237 Double_t xyz[3]={ref->X(),ref->Y(),ref->Z()};
238 Double_t pxyz[3]={ref->Px(),ref->Py(),ref->Pz()};
240 for (Int_t i=0; i<21;i++) cv[i]=0;
241 if (!part->GetPDG()) return 0;
242 AliExternalTrackParam * param = new AliExternalTrackParam(xyz,pxyz,cv,TMath::Nint(part->GetPDG()->Charge()/3.));
246 Bool_t AliMCTrackingTestTask::PropagateToPoint(AliExternalTrackParam *param, Double_t *xyz, Double_t mass, Float_t step){
248 // Propagate track to point xyz using
249 // AliTracker::PropagateTo functionality
251 // param - track parameters
252 // xyz - position to propagate
253 // mass - particle mass
254 // step - step to be used
255 Double_t radius=TMath::Sqrt(xyz[0]*xyz[0]+xyz[1]*xyz[1]);
256 AliTracker::PropagateTrackTo(param, radius+step, mass, step, kTRUE,0.99);
257 AliTracker::PropagateTrackTo(param, radius+0.5, mass, step*0.1, kTRUE,0.99);
258 Double_t sxyz[3]={0,0,0};
259 AliESDVertex vertex(xyz,sxyz);
260 Bool_t isOK = param->PropagateToDCA(&vertex,AliTracker::GetBz(),10);
265 void AliMCTrackingTestTask::ProcessMCInfo(){
270 TParticle * particle= new TParticle;
271 TClonesArray * trefs = new TClonesArray("AliTrackReference");
272 const Double_t kPcut=0.1;
277 Int_t npart = fMCinfo->GetNumberOfTracks();
278 if (npart==0) return;
279 Double_t vertex[4]={0,0,0,0};
280 fMCinfo->GetParticleAndTR(0, particle, trefs);
282 vertex[0]=particle->Vx();
283 vertex[1]=particle->Vy();
284 vertex[2]=particle->Vz();
285 vertex[3]=particle->R();
290 for (Int_t ipart=0;ipart<npart;ipart++){
291 Int_t status = fMCinfo->GetParticleAndTR(ipart, particle, trefs);
292 if (status<0) continue;
293 if (!particle) continue;
294 if (!trefs) continue;
295 Int_t nref = trefs->GetEntries();
296 if (nref<5) continue;
297 FitTrackRefs(particle,trefs);
298 AliTrackReference * tpcIn=0;
299 AliTrackReference * tpcOut=0;
300 AliTrackReference * trdIn=0;
301 AliTrackReference * trdOut=0;
302 AliTrackReference * itsIn=0;
303 AliTrackReference * itsOut=0;
306 for (Int_t iref=0;iref<nref;iref++){
307 AliTrackReference * ref = (AliTrackReference*)trefs->At(iref);
310 Float_t dir = ref->X()*ref->Px()+ref->Y()*ref->Py();
312 if (dir<0) break; // oposite direction - looping track - return back
313 if (ref->P()<kPcut) continue;
314 if (ref->R()<rmax) break;
315 //if (ref->R()<rmin) break;
317 if (ref->DetectorId()==AliTrackReference::kTPC){
321 if (ref->R()>tpcIn->R()) tpcOut = ref;
325 if (ref->DetectorId()==AliTrackReference::kITS){
329 if (ref->R()>itsIn->R()) itsOut = ref;
333 if (ref->DetectorId()==AliTrackReference::kTRD){
337 if (ref->R()>trdIn->R()) trdOut = ref;
340 if (ref->R()<rmin) rmin=ref->R();
341 if (ref->R()>rmax) rmax=ref->R();
343 if (tpcIn && tpcOut) {
344 ProcessRefTracker(tpcIn,tpcOut,particle,1);
345 ProcessRefTracker(tpcIn,tpcOut,particle,3);
347 if (itsIn && itsOut) ProcessRefTracker(itsIn,itsOut,particle,0);
348 if (trdIn && trdOut) ProcessRefTracker(trdIn,trdOut,particle,2);
354 void AliMCTrackingTestTask::ProcessRefTracker(AliTrackReference* refIn, AliTrackReference* refOut, TParticle*part,Int_t type){
356 // Test propagation from In to out
358 AliExternalTrackParam *param = 0;
359 AliExternalTrackParam *paramMC = 0;
360 Double_t xyzIn[3]={refIn->X(),refIn->Y(), refIn->Z()};
361 Double_t mass = part->GetMass();
364 param=MakeTrack(refOut,part);
365 paramMC=MakeTrack(refOut,part);
367 if (type<3) PropagateToPoint(param,xyzIn, mass, step);
370 seed.Set(param->GetX(),param->GetAlpha(),param->GetParameter(),param->GetCovariance());
371 Float_t alpha= TMath::ATan2(refIn->Y(),refIn->X());
372 if(seed.Rotate(alpha-seed.GetAlpha())==kFALSE) return;
374 for (Float_t xlayer= seed.GetX(); xlayer>refIn->R(); xlayer-=step){
375 seed.PropagateTo(xlayer);
377 seed.PropagateTo(refIn->R());
378 param->Set(seed.GetX(),seed.GetAlpha(),seed.GetParameter(),seed.GetCovariance());
380 TTreeSRedirector *pcstream = GetDebugStreamer();
383 param->GetXYZ(gpos.GetMatrixArray());
384 param->GetPxPyPz(gmom.GetMatrixArray());
401 void AliMCTrackingTestTask::FitTrackRefs(TParticle * part, TClonesArray * trefs){
406 const Int_t kMinRefs=6;
407 Int_t nrefs = trefs->GetEntries();
408 if (nrefs<kMinRefs) return; // we should have enough references
412 for (Int_t iref=0; iref<nrefs; iref++){
413 AliTrackReference * ref = (AliTrackReference*)trefs->At(iref);
415 Float_t dir = ref->X()*ref->Px()+ref->Y()*ref->Py();
417 if (ref->DetectorId()!=AliTrackReference::kTPC) continue;
418 if (iref0<0) iref0 = iref;
421 if (iref1-iref0<kMinRefs) return;
423 for (Int_t icov=0; icov<15; icov++) covar[icov]=0;
430 AliTrackReference * refIn = (AliTrackReference*)trefs->At(iref0);
431 AliTrackReference * refOut = (AliTrackReference*)trefs->At(iref1);
432 AliExternalTrackParam *paramPropagate= MakeTrack(refIn,part);
433 AliExternalTrackParam *paramUpdate = MakeTrack(refIn,part);
434 paramUpdate->AddCovariance(covar);
435 Double_t mass = part->GetMass();
436 Double_t charge = part->GetPDG()->Charge()/3.;
438 Float_t alphaIn= TMath::ATan2(refIn->Y(),refIn->X());
439 Float_t radiusIn= refIn->R();
440 Float_t alphaOut= TMath::ATan2(refOut->Y(),refOut->X());
441 Float_t radiusOut= refOut->R();
445 AliMagF * field = (AliMagF*) TGeoGlobalMagField::Instance()->GetField();
446 for (Int_t iref = iref0; iref<=iref1; iref++){
447 AliTrackReference * ref = (AliTrackReference*)trefs->At(iref);
448 Float_t alphaC= TMath::ATan2(ref->Y(),ref->X());
449 Double_t pos[3] = {ref->X(), ref->Y(), ref->Z()};
451 field->Field(pos,mag);
452 isOKP&=paramPropagate->Rotate(alphaC);
453 isOKU&=paramUpdate->Rotate(alphaC);
454 for (Float_t xref= paramPropagate->GetX(); xref<ref->R(); xref++){
455 isOKP&=paramPropagate->PropagateTo(xref, mag[2]);
456 isOKU&=paramUpdate->PropagateTo(xref, mag[2]);
458 isOKP&=paramPropagate->PropagateTo(ref->R(), mag[2]);
459 isOKU&=paramUpdate->PropagateTo(ref->R(), mag[2]);
460 Double_t clpos[2] = {0, ref->Z()};
461 Double_t clcov[3] = { 0.005,0,0.005};
462 isOKU&= paramUpdate->Update(clpos, clcov);
464 TTreeSRedirector *pcstream = GetDebugStreamer();
470 paramUpdate->GetXYZ(gposU.GetMatrixArray());
471 paramUpdate->GetPxPyPz(gmomU.GetMatrixArray());
472 paramPropagate->GetXYZ(gposP.GetMatrixArray());
473 paramPropagate->GetPxPyPz(gmomP.GetMatrixArray());
475 (*pcstream)<<"MCupdate"<<
483 "pP.="<<paramPropagate<<
484 "pU.="<<paramUpdate<<
496 void AliMCTrackingTestTask::FinishTaskOutput()
499 // According description in AliAnalisysTask this method is call
500 // on the slaves before sending data
503 gSystem->Exec("pwd");
504 RegisterDebugOutput();
509 void AliMCTrackingTestTask::RegisterDebugOutput(){
514 // store - copy debug output to the destination position
515 // currently ONLY for local copy
518 dsName+="Debug.root";
519 dsName.ReplaceAll(" ","");
520 TString dsName2=fDebugOutputPath.Data();
521 gSystem->MakeDirectory(dsName2.Data());
522 dsName2+=gSystem->HostName();
523 gSystem->MakeDirectory(dsName2.Data());
525 dsName2+=gSystem->BaseName(gSystem->pwd());
527 gSystem->MakeDirectory(dsName2.Data());
529 AliInfo(Form("copy %s\t%s\n",dsName.Data(),dsName2.Data()));
530 printf("copy %s\t%s\n",dsName.Data(),dsName2.Data());
531 TFile::Cp(dsName.Data(),dsName2.Data());
536 gSystem->AddIncludePath("-I$ALICE_ROOT/TPC/macros");
537 gROOT->LoadMacro("$ALICE_ROOT/TPC/macros/AliXRDPROOFtoolkit.cxx+")
538 AliXRDPROOFtoolkit tool;
539 TChain * chain = tool.MakeChain("mctracking.txt","MC",0,100);
543 chain->SetAlias("pdg","(p.fPdgCode)");
544 chain->SetAlias("dPRec","(refOut.P()-par.P())/refIn.P()");
545 chain->SetAlias("dPMC","(refOut.P()-refIn.P())/refIn->P()");
546 chain->SetAlias("dPtRec","(refOut.Pt()-par.Pt())/refIn.Pt()");
547 chain->SetAlias("dPtMC","(refOut.Pt()-refIn.Pt())/refIn->Pt()");
551 chain->Draw("-sqrt(dPRec):-sqrt(dPMC)","abs(pdg)!=11&&type==0&&p.Pt()<0.5&&abs(p.R())<1&&abs(refOut.fZ)<220");
552 htemp->SetYTitle("#sqrt{#DeltaP_{rec}/P}");
553 htemp->SetXTitle("#sqrt{#DeltaP_{mc}/P}");
554 gPad->SaveAs("picLoss/dPcorr_ITS_step1.gif");
555 gPad->SaveAs("picLoss/dPcorr_ITS_step1.eps");
557 chain->Draw("-sqrt(dPRec):-sqrt(dPMC)","abs(pdg)!=11&&type==1&&p.Pt()<0.5&&abs(p.R())<1&&abs(refOut.fZ)<220");
558 htemp->SetYTitle("#sqrt{#DeltaP_{rec}/P}");
559 htemp->SetXTitle("#sqrt{#DeltaP_{mc}/P}");
560 gPad->SaveAs("picLoss/dPcorr_TPC_step1.gif");
561 gPad->SaveAs("picLoss/dPcorr_TPC_step1.eps");
564 chain->Draw("-sqrt(dPRec):-sqrt(dPMC)","abs(pdg)!=11&&type==3&&p.Pt()<0.5&&abs(p.R())<1&&abs(refOut.fZ)<220");
565 htemp->SetYTitle("#sqrt{#DeltaP_{rec}/P}");
566 htemp->SetXTitle("#sqrt{#DeltaP_{mc}/P}");
567 gPad->SaveAs("picLoss/dPcorr_TPCseed_step1.gif");
568 gPad->SaveAs("picLoss/dPcorr_TPCseed_step1.eps");
572 chain->Draw("-sqrt(dPRec):-sqrt(dPMC)","abs(pdg)!=11&&type==2&&p.Pt()<0.5&&abs(p.R())<1&&abs(refOut.fZ)<220");
573 htemp->SetYTitle("#sqrt{#DeltaP_{rec}/P}");
574 htemp->SetXTitle("#sqrt{#DeltaP_{mc}/P}");
575 gPad->SaveAs("picLoss/dPcorr_TRD_step1.gif");
576 gPad->SaveAs("picLoss/dPcorr_TRD_step1.eps");
581 chain->Draw("(par.Pt()-refIn.Pt())/refIn.Pt()>>his(100,-0.02,0.02)","abs(pdg)!=11&&type==3&&p.Pt()<0.5&&abs(p.R())<1&&abs(refOut.fZ)<220");
582 his->SetXTitle("(P_{trec}-P_{tmc})/P_{tmc}");
583 gPad->SaveAs("picLoss/dPtcorr_TPCseed_step1_1D.eps");
584 gPad->SaveAs("picLoss/dPtcorr_TPCseed_step1_1D.gif");
586 chain->Draw("(par.P()-refIn.P())/refIn.P()>>his(100,-0.02,0.02)","abs(pdg)!=11&&type==3&&p.Pt()<0.5&&abs(p.R())<1&&abs(refOut.fZ)<220");
587 his->SetXTitle("(P_{rec}-P_{mc})/P_{mc}");
588 gPad->SaveAs("picLoss/dPcorr_TPCseed_step1_1D.eps");
589 gPad->SaveAs("picLoss/dPcorr_TPCseed_step1_1D.gif");