PWGLF/FORWARD/analysis2/AliFMDEnergyFitterTask.cxx

   1 //
   2 // Histogram and fit the energy loss distributions for the FMD
   3 //
   4 // Inputs:
   5 //   - AliESDEvent
   6 //
   7 // Outputs:
   8 //   - None
   9 //
  10 // Histograms:
  11 //
  12 // Corrections used:
  13 //   - None
  14 //
  15 //
  16 //
  17 #include "AliFMDEnergyFitterTask.h"
  18 #include "AliLog.h"
  19 #include "AliESDEvent.h"
  20 #include "AliAODForwardMult.h"
  21 #include "AliForwardCorrectionManager.h"
  22 #include "AliAnalysisManager.h"
  23 #include "AliAnalysisDataSlot.h"
  24 #include "AliAnalysisDataContainer.h"
  25 #include <TH1.h>
  26 #include <TDirectory.h>
  27 #include <TTree.h>
  28 #include <TFile.h>
  29 #include "AliMCEvent.h"
  30 #include "AliGenHijingEventHeader.h"
  31 #include "AliHeader.h"
  32 #include <iostream>
  33
  34 //====================================================================
  35 AliFMDEnergyFitterTask::AliFMDEnergyFitterTask()
  36   : AliAnalysisTaskSE(),
  37     fFirstEvent(true),
  38     fEventInspector(),
  39     fEnergyFitter(),
  40     fList(0),
  41     fbLow(0),
  42     fbHigh(100)
  43 {
  44   //
  45   // Constructor
  46   //
  47   DGUARD(fDebug,0,"Default CTOR of AliFMDEnergyFitterTask");
  48 }
  49
  50 //____________________________________________________________________
  51 AliFMDEnergyFitterTask::AliFMDEnergyFitterTask(const char* name)
  52   : AliAnalysisTaskSE(name),
  53     fFirstEvent(true),
  54     fEventInspector("event"),
  55     fEnergyFitter("energy"),
  56     fList(0),
  57     fbLow(0),
  58     fbHigh(100)
  59 {
  60   //
  61   // Constructor
  62   //
  63   // Parameters:
  64   //    name Name of task
  65   //
  66   DGUARD(fDebug,0,"Named CTOR of AliFMDEnergyFitterTask: %s", name);
  67   DefineOutput(1, TList::Class());
  68   DefineOutput(2, TList::Class());
  69   fBranchNames =
  70     "ESD:AliESDRun.,AliESDHeader.,AliMultiplicity.,"
  71     "AliESDFMD.,SPDVertex.,PrimaryVertex.";
  72 }
  73
  74 //____________________________________________________________________
  75 AliFMDEnergyFitterTask::AliFMDEnergyFitterTask(const AliFMDEnergyFitterTask& o)
  76   : AliAnalysisTaskSE(o),
  77     fFirstEvent(o.fFirstEvent),
  78     fEventInspector(o.fEventInspector),
  79     fEnergyFitter(o.fEnergyFitter),
  80     fList(o.fList),
  81     fbLow(o.fbLow),
  82     fbHigh(o.fbHigh)
  83 {
  84   //
  85   // Copy constructor
  86   //
  87   // Parameters:
  88   //    o Object to copy from
  89   //
  90   DGUARD(fDebug,0,"COPY CTOR of AliFMDEnergyFitterTask");
  91   DefineOutput(1, TList::Class());
  92   DefineOutput(2, TList::Class());
  93 }
  94
  95 //____________________________________________________________________
  96 AliFMDEnergyFitterTask&
  97 AliFMDEnergyFitterTask::operator=(const AliFMDEnergyFitterTask& o)
  98 {
  99   //
 100   // Assignment operator
 101   //
 102   // Parameters:
 103   //    o Object to assign from
 104   //
 105   // Return:
 106   //    Reference to this object
 107   //
 108   DGUARD(fDebug,3,"Assignment of AliFMDEnergyFitterTask");
 109   if (&o == this) return *this;
 110   AliAnalysisTaskSE::operator=(o);
 111
 112   fFirstEvent        = o.fFirstEvent;
 113   fEventInspector    = o.fEventInspector;
 114   fEnergyFitter      = o.fEnergyFitter;
 115   fList              = o.fList;
 116   fbLow              = o.fbLow;
 117   fbHigh             = o.fbHigh;
 118
 119   return *this;
 120 }
 121
 122 //____________________________________________________________________
 123 void
 124 AliFMDEnergyFitterTask::SetDebug(Int_t dbg)
 125 {
 126   //
 127   // Set the debug level
 128   //
 129   // Parameters:
 130   //    dbg Debug level
 131   //
 132   fEventInspector.SetDebug(dbg);
 133   fEnergyFitter.SetDebug(dbg);
 134 }
 135
 136 //____________________________________________________________________
 137 void
 138 AliFMDEnergyFitterTask::Init()
 139 {
 140   //
 141   // Initialize the task
 142   //
 143   //
 144   DGUARD(fDebug,1,"Initialize of AliFMDEnergyFitterTask");
 145   fFirstEvent = true;
 146 }
 147
 148 //____________________________________________________________________
 149 void
 150 AliFMDEnergyFitterTask::InitializeSubs()
 151 {
 152   //
 153   // Initialise the sub objects and stuff.  Called on first event
 154   //
 155   //
 156   DGUARD(fDebug,1,"Initialize subs of AliFMDEnergyFitterTask");
 157   AliForwardCorrectionManager& fcm = AliForwardCorrectionManager::Instance();
 158   UShort_t sys = fEventInspector.GetCollisionSystem();
 159   UShort_t sNN = fEventInspector.GetEnergy();
 160   Short_t  fld = fEventInspector.GetField();
 161   fcm.Init(sys, sNN, fld, 0);
 162   TAxis eAxis(0,0,0);
 163   TAxis vAxis(10,-10,10);
 164   fEnergyFitter.Init(eAxis);
 165   fEventInspector.Init(vAxis);
 166
 167 }
 168
 169 //____________________________________________________________________
 170 void
 171 AliFMDEnergyFitterTask::UserCreateOutputObjects()
 172 {
 173   //
 174   // Create output objects
 175   //
 176   //
 177   DGUARD(fDebug,1,"Create output objects of AliFMDEnergyFitterTask");
 178   fList = new TList;
 179   fList->SetOwner();
 180
 181   fEventInspector.DefineOutput(fList);
 182   fEnergyFitter.DefineOutput(fList);
 183
 184   PostData(1, fList);
 185 }
 186 //____________________________________________________________________
 187 void
 188 AliFMDEnergyFitterTask::UserExec(Option_t*)
 189 {
 190   //
 191   // Process each event
 192   //
 193   // Parameters:
 194   //    option Not used
 195   //
 196
 197   // static Int_t cnt = 0;
 198   // cnt++;
 199   // Get the input data
 200   DGUARD(fDebug,1,"Analyse event of AliFMDEnergyFitterTask");
 201
 202   AliMCEvent* mcevent = MCEvent();
 203   if(mcevent) {
 204     AliHeader* header            = mcevent->Header();
 205     AliGenHijingEventHeader* hijingHeader =
 206       dynamic_cast<AliGenHijingEventHeader*>(header->GenEventHeader());
 207     if(hijingHeader) {
 208       Float_t b = hijingHeader->ImpactParameter();
 209       if(b<fbLow || b>fbHigh) return;
 210       else
 211         std::cout<<"Selecting event with impact parameter "<<b<<std::endl;
 212     }
 213
 214   }
 215
 216   AliESDEvent* esd = dynamic_cast<AliESDEvent*>(InputEvent());
 217   // AliInfo(Form("Event # %6d (esd=%p)", cnt, esd));
 218   if (!esd) {
 219     AliWarning("No ESD event found for input event");
 220     return;
 221   }
 222
 223   // On the first event, initialize the parameters
 224   if (fFirstEvent && esd->GetESDRun()) {
 225     fEventInspector.ReadRunDetails(esd);
 226
 227     AliInfo(Form("Initializing with parameters from the ESD:\n"
 228                  "         AliESDEvent::GetBeamEnergy()   ->%f\n"
 229                  "         AliESDEvent::GetBeamType()     ->%s\n"
 230                  "         AliESDEvent::GetCurrentL3()    ->%f\n"
 231                  "         AliESDEvent::GetMagneticField()->%f\n"
 232                  "         AliESDEvent::GetRunNumber()    ->%d\n",
 233                  esd->GetBeamEnergy(),
 234                  esd->GetBeamType(),
 235                  esd->GetCurrentL3(),
 236                  esd->GetMagneticField(),
 237                  esd->GetRunNumber()));
 238
 239
 240
 241     // AliFMDAnaParameters* pars = AliFMDAnaParameters::Instance();
 242     // pars->SetParametersFromESD(esd);
 243     // pars->PrintStatus();
 244     fFirstEvent = false;
 245
 246     InitializeSubs();
 247   }
 248   Bool_t   lowFlux   = kFALSE;
 249   UInt_t   triggers  = 0;
 250   UShort_t ivz       = 0;
 251   Double_t vz        = 0;
 252   Double_t cent      = 0;
 253   UShort_t nClusters = 0;
 254   UInt_t   found     = fEventInspector.Process(esd, triggers, lowFlux,
 255                                                ivz, vz, cent, nClusters);
 256   if (found & AliFMDEventInspector::kNoEvent)    return;
 257   if (found & AliFMDEventInspector::kNoTriggers) return;
 258   if (found & AliFMDEventInspector::kNoSPD)     return;
 259   if (found & AliFMDEventInspector::kNoFMD)     return;
 260   if (found & AliFMDEventInspector::kNoVertex)  return;
 261   if (found & AliFMDEventInspector::kBadVertex) return;
 262
 263   //  if(cent > 0) {
 264   //  if( cent < 40 || cent >50 ) return;
 265   //  else std::cout<<"selecting event with cent "<<cent<<std::endl;
 266   // }
 267
 268   // Get FMD data
 269   AliESDFMD* esdFMD = esd->GetFMDData();
 270   // Do the energy stuff
 271   if (!fEnergyFitter.Accumulate(*esdFMD, cent,
 272                                 triggers & AliAODForwardMult::kEmpty)){
 273     AliWarning("Energy fitter failed");
 274     return;
 275   }
 276   PostData(1, fList);
 277 }
 278
 279 //____________________________________________________________________
 280 void
 281 AliFMDEnergyFitterTask::Terminate(Option_t*)
 282 {
 283   //
 284   // End of job
 285   //
 286   // Parameters:
 287   //    option Not used
 288   //
 289   DGUARD(fDebug,1,"Processing merged output of AliFMDEnergyFitterTask");
 290
 291   TList* list = dynamic_cast<TList*>(GetOutputData(1));
 292   if (!list) {
 293     AliError(Form("No output list defined (%p)", GetOutputData(1)));
 294     if (GetOutputData(1)) GetOutputData(1)->Print();
 295     return;
 296   }
 297
 298   AliInfo("Fitting energy loss spectra");
 299   fEnergyFitter.Fit(list);
 300
 301   // Make a deep copy and post that as output 2
 302   TList* list2 = static_cast<TList*>(list->Clone(Form("%sResults",
 303                                                       list->GetName())));
 304   list2->SetOwner();
 305   PostData(2, list2);
 306 }
 307
 308 //____________________________________________________________________
 309 void
 310 AliFMDEnergyFitterTask::Print(Option_t*) const
 311 {
 312   //
 313   // Print information
 314   //
 315   // Parameters:
 316   //    option Not used
 317   //
 318 }
 319
 320 //
 321 // EOF
 322 //