ZDC/AliZDCTriggerProcessor.cxx

   1 #include "AliZDCTriggerProcessor.h"
   2 #include "AliCDBManager.h"
   3 #include "AliCDBEntry.h"
   4 #include "AliCDBMetaData.h"
   5 #include "AliLog.h"
   6 #include "AliZDCTriggerParameters.h"
   7
   8 /////////////////////////////////////////////////////////////////////
   9 //                                                                 //
  10 //        Class implementing ZDC  trigger processor.               //
  11 //                                                                 //
  12 /////////////////////////////////////////////////////////////////////
  13
  14 ClassImp(AliZDCTriggerProcessor)
  15
  16 //______________________________________________________________________________________________
  17 AliZDCTriggerProcessor::AliZDCTriggerProcessor() :
  18   fSignal(0x0),
  19   fTriggerParam(0x0)
  20 {
  21   // default constructor
  22 }
  23
  24 //______________________________________________________________________________________________
  25 AliZDCTriggerProcessor::AliZDCTriggerProcessor(Float_t* signal) :
  26   fSignal(signal),
  27   fTriggerParam(GetTriggerParamFromOCDB())
  28 {
  29   // standard constructor I
  30   // gets the trigger parameters directly from OCDB
  31 }
  32
  33 //______________________________________________________________________________________________
  34 AliZDCTriggerProcessor::AliZDCTriggerProcessor(Float_t* signal, AliZDCTriggerParameters* ocdbParam) :
  35   fSignal(signal),
  36   fTriggerParam(ocdbParam)
  37 {
  38   // standard constructor II
  39 }
  40
  41 //_____________________________________________________________________________
  42 AliZDCTriggerProcessor &AliZDCTriggerProcessor::operator =(const AliZDCTriggerProcessor &trig)
  43 {
  44  // Equal operator.
  45  this->~AliZDCTriggerProcessor();
  46  new(this) AliZDCTriggerProcessor(trig);
  47  return *this;
  48
  49 }
  50
  51 //______________________________________________________________________________________________
  52 AliZDCTriggerProcessor::AliZDCTriggerProcessor(const AliZDCTriggerProcessor& trigg) :
  53   TObject(),
  54   fSignal(trigg.fSignal),
  55   fTriggerParam(trigg.fTriggerParam)
  56 {
  57   // copy constructor
  58 }
  59
  60 //______________________________________________________________________________________________
  61 AliZDCTriggerProcessor::~AliZDCTriggerProcessor()
  62 {
  63   // destructor
  64 }
  65
  66 //______________________________________________________________________________________________
  67 UInt_t AliZDCTriggerProcessor::ProcessEvent()
  68 {
  69   // process ZDC signals in order to determine the trigger output
  70   UInt_t ctpInput = 0;
  71   //
  72   Bool_t mbTriggered = MBTrigger();
  73   if(mbTriggered == kTRUE) ctpInput = 0x1;
  74   Bool_t cenTriggered = CentralTrigger();
  75   if(cenTriggered == kTRUE) ctpInput = 0x1 << 1;
  76   Bool_t semicenTriggered = SemicentralTrigger();
  77   if(semicenTriggered == kTRUE) ctpInput = 0x1 << 2;
  78   Bool_t emdTriggered = EMDTrigger();
  79   if(emdTriggered == kTRUE) ctpInput = 0x1 << 3;
  80
  81   if((mbTriggered == kTRUE) || (cenTriggered == kTRUE) ||
  82      (semicenTriggered == kTRUE) || (emdTriggered == kTRUE)){
  83       return 1;
  84   }
  85   else{
  86     return 0;
  87   }
  88 }
  89
  90 //______________________________________________________________________________________________
  91 Bool_t AliZDCTriggerProcessor::MBTrigger()
  92 {
  93   // is the processed event a MB A-A event?
  94
  95   Float_t mbTrheshold = fTriggerParam->GetADCMBThreshold();
  96   // check whether ZDC signal > mbTrheshold
  97   if((fSignal[0]+fSignal[1]+fSignal[3]+fSignal[4]) > mbTrheshold)
  98        return kTRUE;
  99   else return kFALSE;
 100
 101 }
 102
 103 //______________________________________________________________________________________________
 104 Bool_t AliZDCTriggerProcessor::CentralTrigger()
 105 {
 106   // is the processed event a central A-A event?
 107
 108   Float_t zemThr = fTriggerParam->GetADCZDCCentralityThr();
 109   const Float_t* centralWin = fTriggerParam->GetADCCentralWindow();
 110   //
 111   if((fSignal[0]+fSignal[1]+fSignal[3]+fSignal[4]) > centralWin[0]
 112      &&
 113      (fSignal[0]+fSignal[1]+fSignal[3]+fSignal[4]) < centralWin[1]
 114      &&
 115      fSignal[2] > zemThr)
 116         return kTRUE;
 117   else return kFALSE;
 118 }
 119
 120 //______________________________________________________________________________________________
 121 Bool_t AliZDCTriggerProcessor::SemicentralTrigger()
 122 {
 123   // is the processed event a semicentral A-A event?
 124
 125   Float_t zemThr =  fTriggerParam->GetADCZDCCentralityThr();
 126   const Float_t* semicentralWin =   fTriggerParam->GetADCSemicentralWindow();
 127   //
 128   if((fSignal[0]+fSignal[1]+fSignal[3]+fSignal[4]) > semicentralWin[0]
 129      &&
 130      (fSignal[0]+fSignal[1]+fSignal[3]+fSignal[4]) < semicentralWin[1]
 131      &&
 132      fSignal[2] > zemThr)
 133         return kTRUE;
 134   else return kFALSE;
 135 }
 136
 137 //______________________________________________________________________________________________
 138 Bool_t AliZDCTriggerProcessor::EMDTrigger()
 139 {
 140   // is the processed an EMD event?
 141
 142   const Float_t* emdWin =   fTriggerParam->GetADCEMDWindow();
 143   // check whether ZNA AND ZNC signals fall into the
 144   // 2 distinct windows defined for EMD trigger
 145   if(fSignal[0] > emdWin[0] && fSignal[0] < emdWin[1]
 146      &&
 147      fSignal[3] > emdWin[2] && fSignal[3] < emdWin[3])
 148         return kTRUE;
 149   else return kFALSE;
 150 }
 151
 152 //______________________________________________________________________________________________
 153 AliZDCTriggerParameters* AliZDCTriggerProcessor::GetTriggerParamFromOCDB() const
 154 {
 155   // retrieving trigger parameter configuration form OCDB
 156   AliCDBEntry  *entry = AliCDBManager::Instance()->Get("ZDC/Trigger/");
 157   if(!entry) AliFatal("No calibration data loaded!");
 158
 159   AliZDCTriggerParameters *trigParam = dynamic_cast<AliZDCTriggerParameters*>  (entry->GetObject());
 160   if(!trigParam)  AliFatal("Wrong calibration object in calibration  file!");
 161
 162   return trigParam;
 163
 164 }