PWG/EMCAL/AliEmcalSetupTask.cxx

   1 // $Id$
   2 //
   3 // Task to setup emcal related global objects.
   4 //
   5 // Author: C.Loizides
   6
   7 #include "AliEmcalSetupTask.h"
   8 #include <TClonesArray.h>
   9 #include <TGeoGlobalMagField.h>
  10 #include <TGeoManager.h>
  11 #include "AliAODEvent.h"
  12 #include "AliAnalysisManager.h"
  13 #include "AliCDBManager.h"
  14 #include "AliEMCALGeometry.h"
  15 #include "AliESDEvent.h"
  16 #include "AliGeomManager.h"
  17 #include "AliMagF.h"
  18 #include "AliOADBContainer.h"
  19
  20 ClassImp(AliEmcalSetupTask)
  21
  22 //________________________________________________________________________
  23 AliEmcalSetupTask::AliEmcalSetupTask() :
  24   AliAnalysisTaskSE(),
  25   fOcdbPath(),
  26   fOadbPath("$ALICE_ROOT/OADB/EMCAL"),
  27   fGeoPath("."),
  28   fIsInit(kFALSE)
  29 {
  30   // Constructor.
  31 }
  32
  33 //________________________________________________________________________
  34 AliEmcalSetupTask::AliEmcalSetupTask(const char *name) :
  35   AliAnalysisTaskSE(name),
  36   fOcdbPath(),
  37   fOadbPath("$ALICE_ROOT/OADB/EMCAL"),
  38   fGeoPath("."),
  39   fIsInit(kFALSE)
  40 {
  41   // Constructor.
  42   fBranchNames = "ESD:AliESDHeader.,AliESDRun.";
  43 }
  44
  45 //________________________________________________________________________
  46 AliEmcalSetupTask::~AliEmcalSetupTask()
  47 {
  48   // Destructor.
  49 }
  50
  51 //________________________________________________________________________
  52 void AliEmcalSetupTask::UserExec(Option_t *)
  53 {
  54   // Main loop, called for each event.
  55
  56   if (fIsInit)
  57     return;
  58
  59   AliAnalysisManager *am = AliAnalysisManager::GetAnalysisManager();
  60   if (!am) {
  61     AliError("Manager zero, returning");
  62     return;
  63   }
  64   am->LoadBranch("AliESDRun.");
  65   am->LoadBranch("AliESDHeader.");
  66
  67   Int_t runno = InputEvent()->GetRunNumber();
  68   TString geoname("EMCAL_FIRSTYEARV1");
  69   Int_t year = 2010;
  70   if (runno>139517) {
  71     year = 2011;
  72     geoname = "EMCAL_COMPLETEV1";
  73   }
  74   if (runno>170593) {
  75     year = 2012;
  76     geoname = "EMCAL_COMPLETE12SMV1";
  77   }
  78
  79   AliEMCALGeometry *geom = AliEMCALGeometry::GetInstance(geoname);
  80   if (!geom) {
  81     AliFatal(Form("Can not create geometry: %s",geoname.Data()));
  82     return;
  83   }
  84
  85   AliCDBManager *man = 0;
  86   if (fOcdbPath.Length()>0) {
  87     AliInfo(Form("Setting up OCDB"));
  88     man = AliCDBManager::Instance();
  89     man->SetDefaultStorage(fOcdbPath);
  90     man->SetRun(runno);
  91   }
  92
  93   TGeoManager *geo = AliGeomManager::GetGeometry();
  94   if (!geo) {
  95     TString fname(gSystem->ExpandPathName(Form("%s/geometry_%d.root", fGeoPath.Data(), year)));
  96     if (gSystem->AccessPathName(fname)==0) {
  97       AliInfo(Form("Loading geometry from %s", fname.Data()));
  98       AliGeomManager::LoadGeometry(fname);
  99     } else if (man) {
 100       AliInfo(Form("Loading geometry from OCDB"));
 101       AliGeomManager::LoadGeometry();
 102     }
 103   }
 104   if (geo) {
 105     AliGeomManager::ApplyAlignObjsFromCDB("EMCAL");
 106     AliInfo(Form("Locking geometry"));
 107     geo->LockGeometry();
 108   }
 109
 110   if (!TGeoGlobalMagField::Instance()->GetField()) { // construct field map
 111     AliESDEvent *esdEv = dynamic_cast<AliESDEvent*>(InputEvent());
 112     if (esdEv) {
 113       AliInfo("Constructing field map from ESD run info");
 114       esdEv->InitMagneticField();
 115     } else {
 116       AliAODEvent *aodEv = dynamic_cast<AliAODEvent*>(InputEvent());
 117       if (aodEv) {
 118         Double_t curSol = 30000*aodEv->GetMagneticField()/5.00668;
 119         Double_t curDip = 6000 *aodEv->GetMuonMagFieldScale();
 120         AliMagF *field  = AliMagF::CreateFieldMap(curSol,curDip);
 121         TGeoGlobalMagField::Instance()->SetField(field);
 122       }
 123     }
 124   }
 125
 126   if (fOadbPath.Length()>0) {
 127     AliOADBContainer emcalgeoCont(Form("emcal"));
 128     emcalgeoCont.InitFromFile(Form("%s/EMCALlocal2master.root",fOadbPath.Data()),
 129                               Form("AliEMCALgeo"));
 130     TObjArray *mobj=dynamic_cast<TObjArray*>(emcalgeoCont.GetObject(runno,"EmcalMatrices"));
 131     if (mobj) {
 132       for(Int_t mod=0; mod < (geom->GetEMCGeometry())->GetNumberOfSuperModules(); mod++){
 133         //AliInfo(Form("Misalignment matrix %d", mod));
 134         geom->SetMisalMatrix((TGeoHMatrix*) mobj->At(mod),mod);
 135       }
 136     }
 137   }
 138
 139   fIsInit = kTRUE;
 140 }