#if !defined(__CINT__) || defined(__MAKECINT__)
// ROOT includes
-#include <TTree.h>
#include <TFile.h>
#include <TH1.h>
#include <TCanvas.h>
#include <Riostream.h>
#include <TROOT.h>
#include <TClonesArray.h>
-#include <TGeoGlobalMagField.h>
#include <TLorentzVector.h>
// STEER includes
#include "AliLog.h"
-#include "AliMagF.h"
#include "AliESDEvent.h"
#include "AliESDMuonTrack.h"
-#include "AliESDMuonCluster.h"
-#include "AliCDBPath.h"
-#include "AliCDBEntry.h"
#include "AliCDBManager.h"
// MUON includes
+#include "AliMUONCDB.h"
#include "AliMUONTrack.h"
#include "AliMUONVTrackStore.h"
#include "AliMUONTrackParam.h"
-#include "AliMUONTrackExtrap.h"
-#include "AliMUONESDInterface.h"
#include "AliMUONRecoCheck.h"
#include "AliMUONVCluster.h"
#include "AliMUONRecoParam.h"
/// Results are saved in the root file DiFakes.root
/// Results are relevent provided that you use the same recoParams as for the reconstruction
-void Prepare(AliMUONRecoParam *&recoParam, Double_t &sigmaCut);
-TTree* GetESDTree(TFile *esdFile);
-Bool_t TrackMatched(AliMUONTrack &track, AliMUONTrack &trackRef, Float_t &fractionOfMatchCluster, Double_t sigmaCut);
-AliMUONTrack* MatchWithTrackRef(AliESDMuonTrack &muonTrack, AliMUONVTrackStore &trackRefStore,
- Float_t &fractionOfMatchCluster, Bool_t useLabel, Double_t sigmaCut);
+Double_t sigmaCut = -1.;
//-----------------------------------------------------------------------
void DIMUONFakes(Bool_t useLabel = kFALSE, Int_t FirstEvent = 0, Int_t LastEvent = -1,
- const TString esdFileName = "AliESDs.root", const TString SimDir = "./generated/")
+ const TString esdFileName = "AliESDs.root", const TString SimDir = "./generated/",
+ const TString ocdbPath = "local://$ALICE_ROOT/OCDB")
{
//Reset ROOT and connect tree file
gROOT->Reset();
+ AliLog::SetClassDebugLevel("AliMCEvent",-1);
+
// File for histograms and histogram booking
TFile *histoFile = new TFile("DiFakes.root", "RECREATE");
TH1F *hPhiM = new TH1F("hPhiM"," matched track phi distribution",100,-1.,9.);
TH1F *hPhiF = new TH1F("hPhiF"," fake track phi distribution",100,-1.,9.);
- // prepare for analysis
- AliMUONRecoParam *recoParam = 0x0;
- Double_t sigmaCut = -1;
- Prepare(recoParam, sigmaCut);
+ // link to reconstructed and simulated tracks
+ AliMUONRecoCheck rc(esdFileName, SimDir);
- // link to reconstructed tracks
- TFile* esdFile = TFile::Open(esdFileName);
- TTree* esdTree = GetESDTree(esdFile);
- AliESDEvent* esd = new AliESDEvent();
- esd->ReadFromTree(esdTree);
+ // load necessary data from OCDB
+ AliCDBManager::Instance()->SetDefaultStorage(ocdbPath);
+ AliCDBManager::Instance()->SetSpecificStorage("GRP/GRP/Data","local://.");
+ AliCDBManager::Instance()->SetRun(rc.GetRunNumber());
+ AliMUONRecoParam* recoParam = AliMUONCDB::LoadRecoParam();
+ if (!recoParam) return;
- // link to simulated tracks
- AliMUONRecoCheck rc(esdFileName, SimDir);
+ // get sigma cut from recoParam to associate clusters with TrackRefs in case the label are not used
+ sigmaCut = (recoParam->ImproveTracks()) ? recoParam->GetSigmaCutForImprovement() : recoParam->GetSigmaCutForTracking();
+ // compute the mask of requested stations from recoParam
+ UInt_t requestedStationMask = 0;
+ for (Int_t i = 0; i < 5; i++) if (recoParam->RequestStation(i)) requestedStationMask |= ( 1 << i );
+ // get from recoParam whether a track need 2 chambers hit in the same station (4 or 5) or not to be reconstructible
+ Bool_t request2ChInSameSt45 = !recoParam->MakeMoreTrackCandidates();
TLorentzVector vMu1, vMu2, vDiMu;
+ Int_t nReconstructiblePairs = 0;
+ Int_t nReconstructedPairs = 0;
+ Int_t nMatchedPairs = 0;
// Loop over ESD events
FirstEvent = TMath::Max(0, FirstEvent);
- LastEvent = (LastEvent>=0) ? TMath::Min((Int_t)esdTree->GetEntries() - 1, LastEvent) : (Int_t)esdTree->GetEntries() - 1;
+ LastEvent = (LastEvent>=0) ? TMath::Min(rc.NumberOfEvents() - 1, LastEvent) : rc.NumberOfEvents() - 1;
for (Int_t iEvent = FirstEvent; iEvent <= LastEvent; iEvent++) {
- // get the ESD of current event
- esdTree->GetEvent(iEvent);
- if (!esd) {
- Error("CheckESD", "no ESD object found for event %d", iEvent);
- return;
- }
-
- // convert TrackRef to MUON tracks
+ // get reconstructed and simulated tracks
+ AliMUONVTrackStore* muonTrackStore = rc.ReconstructedTracks(iEvent, kFALSE);
AliMUONVTrackStore* trackRefStore = rc.TrackRefs(iEvent);
+ if (!muonTrackStore || !trackRefStore) continue;
+
+ // count the number of reconstructible pairs
+ Int_t nMuPlus = 0, nMuMinus = 0;
+ TIter next(trackRefStore->CreateIterator());
+ AliMUONTrack* trackRef;
+ while ( ( trackRef = static_cast<AliMUONTrack*>(next()) ) ) {
+ if (trackRef->IsValid(requestedStationMask, request2ChInSameSt45)) {
+ if (trackRef->GetTrackParamAtVertex()->GetCharge() > 0) nMuPlus++;
+ else nMuMinus++;
+ }
+ }
+ nReconstructiblePairs += nMuPlus*nMuMinus;
// loop over ESD tracks and flag them
+ const AliESDEvent* esd = rc.GetESDEvent();
Int_t nTracks = (Int_t)esd->GetNumberOfMuonTracks() ;
for (Int_t iTrack = 0; iTrack < nTracks; iTrack++) {
- AliESDMuonTrack* muonTrack = esd->GetMuonTrack(iTrack);
+ AliESDMuonTrack* esdTrack = esd->GetMuonTrack(iTrack);
// skip ghosts
- if (!muonTrack->ContainTrackerData()) continue;
+ if (!esdTrack->ContainTrackerData()) continue;
+
+ // find the corresponding MUON track
+ AliMUONTrack* muonTrack = (AliMUONTrack*) muonTrackStore->FindObject(esdTrack->GetUniqueID());
// try to match the reconstructed track with a simulated one
- Float_t fractionOfMatchCluster = 0.;
- AliMUONTrack* matchedTrackRef = MatchWithTrackRef(*muonTrack, *trackRefStore, fractionOfMatchCluster, useLabel, sigmaCut);
+ Int_t nMatchClusters = 0;
+ AliMUONTrack* matchedTrackRef = rc.FindCompatibleTrack(*muonTrack, *trackRefStore, nMatchClusters, useLabel, sigmaCut);
// take actions according to matching result
if (matchedTrackRef) {
// flag matched tracks
- muonTrack->SetLabel(matchedTrackRef->GetUniqueID());
+ esdTrack->SetLabel(matchedTrackRef->GetUniqueID());
// remove already matched trackRefs
trackRefStore->Remove(*matchedTrackRef);
} else {
// flag fake tracks
- muonTrack->SetLabel(-1);
+ esdTrack->SetLabel(-1);
}
Short_t charge2 = muonTrack2->Charge();
if (charge1*charge2 > 0) continue;
+ nReconstructedPairs++;
+
// get track info
Int_t label2 = muonTrack2->GetLabel();
muonTrack2->LorentzP(vMu2);
// fill histograms according to labels
if (label1 >= 0 && label2 >= 0) {
+ nMatchedPairs++;
+
hMassM->Fill(mass);
hPM->Fill(p);
hPtM->Fill(pt);
cDiFakesSummary.Write();
histoFile->Close();
- // clear memory
- delete esd;
- esdFile->Close();
- delete recoParam;
-
-}
-
-//-----------------------------------------------------------------------
-void Prepare(AliMUONRecoParam *&recoParam, Double_t &sigmaCut)
-{
- /// Set the magnetic field and return recoParam and sigmaCut to associate cluster and trackRef
-
- // prepare OCDB access
- AliCDBManager* man = AliCDBManager::Instance();
- man->SetDefaultStorage("local://$ALICE_ROOT/OCDB");
- man->SetRun(0);
-
- // set mag field
- // waiting for mag field in CDB
- if (!TGeoGlobalMagField::Instance()->GetField()) {
- printf("Loading field map...\n");
- AliMagF* field = new AliMagF("Maps","Maps",1.,1.,AliMagF::k5kG);
- TGeoGlobalMagField::Instance()->SetField(field);
- }
- // set the magnetic field for track extrapolations
- AliMUONTrackExtrap::SetField();
-
- // Load initial reconstruction parameters from OCDB
- AliCDBPath path("MUON","Calib","RecoParam");
- AliCDBEntry *entry=man->Get(path.GetPath());
- if(entry) {
- recoParam = dynamic_cast<AliMUONRecoParam*>(entry->GetObject());
- entry->SetOwner(0);
- AliCDBManager::Instance()->UnloadFromCache(path.GetPath());
- }
- if (!recoParam) {
- printf("Couldn't find RecoParam object in OCDB: create default one");
- recoParam = AliMUONRecoParam::GetLowFluxParam();
- }
-
- Info("MUONFakes", "\n recontruction parameters:");
- recoParam->Print("FULL");
- AliMUONESDInterface::ResetTracker(recoParam);
-
- // sigma cut to associate clusters with TrackRefs in case the label are not used
- sigmaCut = (recoParam->ImproveTracks()) ? recoParam->GetSigmaCutForImprovement() : recoParam->GetSigmaCutForTracking();
-
-}
-
-//-----------------------------------------------------------------------
-TTree* GetESDTree(TFile *esdFile)
-{
- /// Check that the file is properly open
- /// Return pointer to the ESD Tree
-
- if (!esdFile || !esdFile->IsOpen()) {
- Error("GetESDTree", "opening ESD file failed");
- exit(-1);
- }
-
- TTree* tree = (TTree*) esdFile->Get("esdTree");
- if (!tree) {
- Error("GetESDTree", "no ESD tree found");
- exit(-1);
- }
-
- return tree;
-
-}
-
-//-----------------------------------------------------------------------
-Bool_t TrackMatched(AliMUONTrack &track, AliMUONTrack &trackRef, Float_t &fractionOfMatchCluster, Double_t sigmaCut)
-{
- /// Try to match 2 tracks
-
- Bool_t compTrack[10];
- Int_t nMatchClusters = track.CompatibleTrack(&trackRef, sigmaCut, compTrack);
- fractionOfMatchCluster = ((Float_t)nMatchClusters) / ((Float_t)track.GetNClusters());
-
- if ((compTrack[0] || compTrack[1] || compTrack[2] || compTrack[3]) && // at least 1 cluster matched in st 1 & 2
- (compTrack[6] || compTrack[7] || compTrack[8] || compTrack[9]) && // at least 1 cluster matched in st 4 & 5
- fractionOfMatchCluster > 0.5) return kTRUE; // more than 50% of clusters matched
- else return kFALSE;
-
-}
-
-//-----------------------------------------------------------------------
-AliMUONTrack* MatchWithTrackRef(AliESDMuonTrack &muonTrack, AliMUONVTrackStore &trackRefStore,
- Float_t &fractionOfMatchCluster, Bool_t useLabel, Double_t sigmaCut)
-{
- /// Return if the trackRef matched with the reconstructed track and the fraction of matched clusters
-
- AliMUONTrack *matchedTrackRef = 0x0;
- fractionOfMatchCluster = 0.;
-
- if (useLabel) { // by using the MC label
-
- // get the corresponding simulated track if any
- Int_t label = muonTrack.GetLabel();
- matchedTrackRef = (AliMUONTrack*) trackRefStore.FindObject(label);
-
- // get the fraction of matched clusters
- if (matchedTrackRef) {
- Int_t nMatchClusters = 0;
- if (muonTrack.ClustersStored()) {
- AliESDMuonCluster* cluster = (AliESDMuonCluster*) muonTrack.GetClusters().First();
- while (cluster) {
- if (cluster->GetLabel() == label) nMatchClusters++;
- cluster = (AliESDMuonCluster*) muonTrack.GetClusters().After(cluster);
- }
- }
- fractionOfMatchCluster = ((Float_t)nMatchClusters) / ((Float_t)muonTrack.GetNClusters());
- }
-
- } else { // by comparing cluster/TrackRef positions
-
- // convert ESD track to MUON track
- AliMUONTrack track;
- AliMUONESDInterface::ESDToMUON(muonTrack,track);
-
- // look for the corresponding simulated track if any
- TIter next(trackRefStore.CreateIterator());
- AliMUONTrack* trackRef;
- while ( ( trackRef = static_cast<AliMUONTrack*>(next()) ) ) {
-
- // check compatibility
- Float_t f = 0.;
- if (TrackMatched(track, *trackRef, f, sigmaCut)) {
- matchedTrackRef = trackRef;
- fractionOfMatchCluster = f;
- break;
- }
-
- }
-
- }
-
- return matchedTrackRef;
+ // print results
+ printf("\n");
+ printf("nb of reconstructible OS pairs: %d \n", nReconstructiblePairs);
+ printf("nb of reconstructed OS pairs: %d \n", nReconstructedPairs);
+ printf("nb of reconstructed OS pairs matched with trackRefs: %d \n", nMatchedPairs);
+ printf("\n");
}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff