PWG2/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 }
  48
  49 //____________________________________________________________________
  50 AliFMDEnergyFitterTask::AliFMDEnergyFitterTask(const char* name)
  51   : AliAnalysisTaskSE(name),
  52     fFirstEvent(true),
  53     fEventInspector("event"),
  54     fEnergyFitter("energy"),
  55     fList(0),
  56     fbLow(0),
  57     fbHigh(100)
  58 {
  59   //
  60   // Constructor
  61   //
  62   // Parameters:
  63   //    name Name of task
  64   //
  65   DefineOutput(1, TList::Class());
  66   DefineOutput(2, TList::Class());
  67 }
  68
  69 //____________________________________________________________________
  70 AliFMDEnergyFitterTask::AliFMDEnergyFitterTask(const AliFMDEnergyFitterTask& o)
  71   : AliAnalysisTaskSE(o),
  72     fFirstEvent(o.fFirstEvent),
  73     fEventInspector(o.fEventInspector),
  74     fEnergyFitter(o.fEnergyFitter),
  75     fList(o.fList),
  76     fbLow(o.fbLow),
  77     fbHigh(o.fbHigh)
  78 {
  79   //
  80   // Copy constructor
  81   //
  82   // Parameters:
  83   //    o Object to copy from
  84   //
  85   DefineOutput(1, TList::Class());
  86   DefineOutput(2, TList::Class());
  87 }
  88
  89 //____________________________________________________________________
  90 AliFMDEnergyFitterTask&
  91 AliFMDEnergyFitterTask::operator=(const AliFMDEnergyFitterTask& o)
  92 {
  93   //
  94   // Assignment operator
  95   //
  96   // Parameters:
  97   //    o Object to assign from
  98   //
  99   // Return:
 100   //    Reference to this object
 101   //
 102   AliAnalysisTaskSE::operator=(o);
 103
 104   fFirstEvent        = o.fFirstEvent;
 105   fEventInspector    = o.fEventInspector;
 106   fEnergyFitter      = o.fEnergyFitter;
 107   fList              = o.fList;
 108   fbLow              = o.fbLow;
 109   fbHigh             = o.fbHigh;
 110
 111   return *this;
 112 }
 113
 114 //____________________________________________________________________
 115 void
 116 AliFMDEnergyFitterTask::SetDebug(Int_t dbg)
 117 {
 118   //
 119   // Set the debug level
 120   //
 121   // Parameters:
 122   //    dbg Debug level
 123   //
 124   fEventInspector.SetDebug(dbg);
 125   fEnergyFitter.SetDebug(dbg);
 126 }
 127
 128 //____________________________________________________________________
 129 void
 130 AliFMDEnergyFitterTask::Init()
 131 {
 132   //
 133   // Initialize the task
 134   //
 135   //
 136   fFirstEvent = true;
 137 }
 138
 139 //____________________________________________________________________
 140 void
 141 AliFMDEnergyFitterTask::InitializeSubs()
 142 {
 143   //
 144   // Initialise the sub objects and stuff.  Called on first event
 145   //
 146   //
 147   AliForwardCorrectionManager& fcm = AliForwardCorrectionManager::Instance();
 148   UShort_t sys = fEventInspector.GetCollisionSystem();
 149   UShort_t sNN = fEventInspector.GetEnergy();
 150   Short_t  fld = fEventInspector.GetField();
 151   fcm.Init(sys, sNN, fld, 0);
 152   TAxis eAxis(0,0,0);
 153   TAxis vAxis(10,-10,10);
 154   fEnergyFitter.Init(eAxis);
 155   fEventInspector.Init(vAxis);
 156
 157 }
 158
 159 //____________________________________________________________________
 160 void
 161 AliFMDEnergyFitterTask::UserCreateOutputObjects()
 162 {
 163   //
 164   // Create output objects
 165   //
 166   //
 167   fList = new TList;
 168   fList->SetOwner();
 169
 170   fEventInspector.DefineOutput(fList);
 171   fEnergyFitter.DefineOutput(fList);
 172
 173   PostData(1, fList);
 174 }
 175 //____________________________________________________________________
 176 void
 177 AliFMDEnergyFitterTask::UserExec(Option_t*)
 178 {
 179   //
 180   // Process each event
 181   //
 182   // Parameters:
 183   //    option Not used
 184   //
 185
 186   // static Int_t cnt = 0;
 187   // cnt++;
 188   // Get the input data
 189
 190   AliMCEvent* mcevent = MCEvent();
 191   if(mcevent) {
 192     AliHeader* header            = mcevent->Header();
 193     AliGenHijingEventHeader* hijingHeader =
 194       dynamic_cast<AliGenHijingEventHeader*>(header->GenEventHeader());
 195     if(hijingHeader) {
 196       Float_t b = hijingHeader->ImpactParameter();
 197       if(b<fbLow || b>fbHigh) return;
 198       else
 199         std::cout<<"Selecting event with impact parameter "<<b<<std::endl;
 200     }
 201
 202   }
 203
 204   AliESDEvent* esd = dynamic_cast<AliESDEvent*>(InputEvent());
 205   // AliInfo(Form("Event # %6d (esd=%p)", cnt, esd));
 206   if (!esd) {
 207     AliWarning("No ESD event found for input event");
 208     return;
 209   }
 210
 211   // On the first event, initialize the parameters
 212   if (fFirstEvent && esd->GetESDRun()) {
 213     fEventInspector.ReadRunDetails(esd);
 214
 215     AliInfo(Form("Initializing with parameters from the ESD:\n"
 216                  "         AliESDEvent::GetBeamEnergy()   ->%f\n"
 217                  "         AliESDEvent::GetBeamType()     ->%s\n"
 218                  "         AliESDEvent::GetCurrentL3()    ->%f\n"
 219                  "         AliESDEvent::GetMagneticField()->%f\n"
 220                  "         AliESDEvent::GetRunNumber()    ->%d\n",
 221                  esd->GetBeamEnergy(),
 222                  esd->GetBeamType(),
 223                  esd->GetCurrentL3(),
 224                  esd->GetMagneticField(),
 225                  esd->GetRunNumber()));
 226
 227
 228
 229     // AliFMDAnaParameters* pars = AliFMDAnaParameters::Instance();
 230     // pars->SetParametersFromESD(esd);
 231     // pars->PrintStatus();
 232     fFirstEvent = false;
 233
 234     InitializeSubs();
 235   }
 236   Bool_t   lowFlux   = kFALSE;
 237   UInt_t   triggers  = 0;
 238   UShort_t ivz       = 0;
 239   Double_t vz        = 0;
 240   Double_t cent      = 0;
 241   UShort_t nClusters = 0;
 242   UInt_t   found     = fEventInspector.Process(esd, triggers, lowFlux,
 243                                                ivz, vz, cent, nClusters);
 244   if (found & AliFMDEventInspector::kNoEvent)    return;
 245   if (found & AliFMDEventInspector::kNoTriggers) return;
 246   if (found & AliFMDEventInspector::kNoSPD)     return;
 247   if (found & AliFMDEventInspector::kNoFMD)     return;
 248   if (found & AliFMDEventInspector::kNoVertex)  return;
 249   if (found & AliFMDEventInspector::kBadVertex) return;
 250
 251   //  if(cent > 0) {
 252   //  if( cent < 40 || cent >50 ) return;
 253   //  else std::cout<<"selecting event with cent "<<cent<<std::endl;
 254   // }
 255
 256   // Get FMD data
 257   AliESDFMD* esdFMD = esd->GetFMDData();
 258   // Do the energy stuff
 259   if (!fEnergyFitter.Accumulate(*esdFMD, cent,
 260                                 triggers & AliAODForwardMult::kEmpty)){
 261     AliWarning("Energy fitter failed");
 262     return;
 263   }
 264   PostData(1, fList);
 265 }
 266
 267 //____________________________________________________________________
 268 void
 269 AliFMDEnergyFitterTask::Terminate(Option_t*)
 270 {
 271   //
 272   // End of job
 273   //
 274   // Parameters:
 275   //    option Not used
 276   //
 277   AliInfo(Form("Running terminate of %s", GetName()));
 278   TList* list = dynamic_cast<TList*>(GetOutputData(1));
 279   if (!list) {
 280     AliError(Form("No output list defined (%p)", GetOutputData(1)));
 281     if (GetOutputData(1)) GetOutputData(1)->Print();
 282     return;
 283   }
 284
 285   AliInfo("Fitting energy loss spectra");
 286   fEnergyFitter.Fit(list);
 287
 288   // Make a deep copy and post that as output 2
 289   TList* list2 = static_cast<TList*>(list->Clone(Form("%sResults",
 290                                                       list->GetName())));
 291   list2->SetOwner();
 292   PostData(2, list2);
 293 }
 294
 295 //____________________________________________________________________
 296 void
 297 AliFMDEnergyFitterTask::Print(Option_t*) const
 298 {
 299   //
 300   // Print information
 301   //
 302   // Parameters:
 303   //    option Not used
 304   //
 305 }
 306
 307 //
 308 // EOF
 309 //