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  //assignment operator
  45  fSignal = trig.GetSignal();
  46  fTriggerParam = trig.GetTriggerParamFromOCDB();
  47
  48 }
  49
  50 //______________________________________________________________________________________________
  51 AliZDCTriggerProcessor::AliZDCTriggerProcessor(const AliZDCTriggerProcessor& trigg) :
  52   TObject(),
  53   fSignal(trigg.fSignal),
  54   fTriggerParam(trigg.fTriggerParam)
  55 {
  56   // copy constructor
  57 }
  58
  59 //______________________________________________________________________________________________
  60 AliZDCTriggerProcessor::~AliZDCTriggerProcessor()
  61 {
  62   // destructor
  63 }
  64
  65 //______________________________________________________________________________________________
  66 UInt_t AliZDCTriggerProcessor::ProcessEvent()
  67 {
  68   // process ZDC signals in order to determine the trigger output
  69   UInt_t ctpInput = 0;
  70   //
  71   Bool_t mbTriggered = MBTrigger();
  72   if(mbTriggered == kTRUE) ctpInput = 0x1;
  73   Bool_t cenTriggered = CentralTrigger();
  74   if(cenTriggered == kTRUE) ctpInput = 0x1 << 1;
  75   Bool_t semicenTriggered = SemicentralTrigger();
  76   if(semicenTriggered == kTRUE) ctpInput = 0x1 << 2;
  77   Bool_t emdTriggered = EMDTrigger();
  78   if(emdTriggered == kTRUE) ctpInput = 0x1 << 3;
  79
  80   if((mbTriggered == kTRUE) || (cenTriggered == kTRUE) ||
  81      (semicenTriggered == kTRUE) || (emdTriggered == kTRUE)){
  82       return 1;
  83   }
  84   else{
  85     return 0;
  86   }
  87 }
  88
  89 //______________________________________________________________________________________________
  90 Bool_t AliZDCTriggerProcessor::MBTrigger()
  91 {
  92   // is the processed event a MB A-A event?
  93
  94   Float_t mbTrheshold = fTriggerParam->GetADCMBThreshold();
  95   // check whether ZDC signal > mbTrheshold
  96   if((fSignal[0]+fSignal[1]+fSignal[3]+fSignal[4]) > mbTrheshold)
  97        return kTRUE;
  98   else return kFALSE;
  99
 100 }
 101
 102 //______________________________________________________________________________________________
 103 Bool_t AliZDCTriggerProcessor::CentralTrigger()
 104 {
 105   // is the processed event a central A-A event?
 106
 107   Float_t zemThr = fTriggerParam->GetADCZDCCentralityThr();
 108   const Float_t* centralWin = fTriggerParam->GetADCCentralWindow();
 109   //
 110   if((fSignal[0]+fSignal[1]+fSignal[3]+fSignal[4]) > centralWin[0]
 111      &&
 112      (fSignal[0]+fSignal[1]+fSignal[3]+fSignal[4]) < centralWin[1]
 113      &&
 114      fSignal[2] > zemThr)
 115         return kTRUE;
 116   else return kFALSE;
 117 }
 118
 119 //______________________________________________________________________________________________
 120 Bool_t AliZDCTriggerProcessor::SemicentralTrigger()
 121 {
 122   // is the processed event a semicentral A-A event?
 123
 124   Float_t zemThr =  fTriggerParam->GetADCZDCCentralityThr();
 125   const Float_t* semicentralWin =   fTriggerParam->GetADCSemicentralWindow();
 126   //
 127   if((fSignal[0]+fSignal[1]+fSignal[3]+fSignal[4]) > semicentralWin[0]
 128      &&
 129      (fSignal[0]+fSignal[1]+fSignal[3]+fSignal[4]) < semicentralWin[1]
 130      &&
 131      fSignal[2] > zemThr)
 132         return kTRUE;
 133   else return kFALSE;
 134 }
 135
 136 //______________________________________________________________________________________________
 137 Bool_t AliZDCTriggerProcessor::EMDTrigger()
 138 {
 139   // is the processed an EMD event?
 140
 141   const Float_t* emdWin =   fTriggerParam->GetADCEMDWindow();
 142   // check whether ZNA AND ZNC signals fall into the
 143   // 2 distinct windows defined for EMD trigger
 144   if(fSignal[0] > emdWin[0] && fSignal[0] < emdWin[1]
 145      &&
 146      fSignal[3] > emdWin[2] && fSignal[3] < emdWin[3])
 147         return kTRUE;
 148   else return kFALSE;
 149 }
 150
 151 //______________________________________________________________________________________________
 152 AliZDCTriggerParameters* AliZDCTriggerProcessor::GetTriggerParamFromOCDB() const
 153 {
 154   // retrieving trigger parameter configuration form OCDB
 155   AliCDBEntry  *entry = AliCDBManager::Instance()->Get("ZDC/Trigger/");
 156   if(!entry) AliFatal("No calibration data loaded!");
 157
 158   AliZDCTriggerParameters *trigParam = dynamic_cast<AliZDCTriggerParameters*>  (entry->GetObject());
 159   if(!trigParam)  AliFatal("Wrong calibration object in calibration  file!");
 160
 161   return trigParam;
 162
 163 }