VZERO/AliVZEROTriggerSimulator.cxx

   1 /**************************************************************************
   2  * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
   3  *                                                                        *
   4  * Author: The ALICE Off-line Project.                                    *
   5  * Contributors are mentioned in the code where appropriate.              *
   6  *                                                                        *
   7  * Permission to use, copy, modify and distribute this software and its   *
   8  * documentation strictly for non-commercial purposes is hereby granted   *
   9  * without fee, provided that the above copyright notice appears in all   *
  10  * copies and that both the copyright notice and this permission notice   *
  11  * appear in the supporting documentation. The authors make no claims     *
  12  * about the suitability of this software for any purpose. It is          *
  13  * provided "as is" without express or implied warranty.                  *
  14  **************************************************************************/
  15 //
  16 // Class AliVZEROTriggerSimulator
  17 // ------------------------------
  18 //  Simulate the VZERO Trigger response
  19 // Use FEE parameters stored in Database
  20 // Can work on real data or in simulation
  21 //
  22
  23 #include <TTree.h>
  24 #include <TClonesArray.h>
  25 #include <TParameter.h>
  26
  27 #include "AliLog.h"
  28 #include "AliCDBManager.h"
  29 #include "AliCDBEntry.h"
  30 #include "AliCDBStorage.h"
  31 #include "AliCDBId.h"
  32 #include "AliVZEROTriggerData.h"
  33 #include "AliVZEROLogicalSignal.h"
  34 #include "AliVZEROTriggerSimulator.h"
  35 #include "AliVZEROdigit.h"
  36 #include "AliVZEROCalibData.h"
  37 #include "AliVZEROConst.h"
  38 #include "AliCTPTimeParams.h"
  39
  40 ClassImp(AliVZEROTriggerSimulator)
  41
  42 //_____________________________________________________________________________
  43 AliVZEROTriggerSimulator::AliVZEROTriggerSimulator(TTree * digitsTree, TClonesArray* digits) :
  44 TObject(),fTriggerData(NULL),fDigitsTree(digitsTree),fDigits(digits),fTriggerWord(0)
  45 {
  46         // constructor
  47         fTriggerData = LoadTriggerData();
  48         LoadClockOffset();
  49
  50         for(int i=0;i<64;i++) {
  51                 fBBFlags[i] = fBGFlags[i] = kFALSE;
  52                 fCharges[i] = 0.;
  53         }
  54         GenerateBBWindows();
  55         GenerateBGWindows();
  56         for (int i=0; i<AliVZEROTriggerData::kNCIUBoards; i++) {
  57                 fBBLatch[i] = new AliVZEROLogicalSignal(fTriggerData->GetLatchWin1(i),0);
  58                 fBGLatch[i] = new AliVZEROLogicalSignal(fTriggerData->GetLatchWin2(i),0);
  59                 fBBReset[i] = new AliVZEROLogicalSignal(fTriggerData->GetResetWin1(i),0);
  60                 fBGReset[i] = new AliVZEROLogicalSignal(fTriggerData->GetResetWin2(i),0);
  61         }
  62 }
  63 //_____________________________________________________________________________
  64 AliVZEROTriggerSimulator::AliVZEROTriggerSimulator() :
  65 TObject(),fTriggerData(NULL),fDigitsTree(NULL),fDigits(NULL),fTriggerWord(0)
  66 {
  67         // Default constructor
  68         fTriggerData = LoadTriggerData();
  69         LoadClockOffset();
  70
  71         for(int i=0;i<64;i++) {
  72                 fBBFlags[i] = fBGFlags[i] = kFALSE;
  73                 fCharges[i] = 0;
  74         }
  75         GenerateBBWindows();
  76         GenerateBGWindows();
  77         for (int i=0; i<AliVZEROTriggerData::kNCIUBoards; i++) {
  78                 fBBLatch[i] = new AliVZEROLogicalSignal(fTriggerData->GetLatchWin1(i),0);
  79                 fBGLatch[i] = new AliVZEROLogicalSignal(fTriggerData->GetLatchWin2(i),0);
  80                 fBBReset[i] = new AliVZEROLogicalSignal(fTriggerData->GetResetWin1(i),0);
  81                 fBGReset[i] = new AliVZEROLogicalSignal(fTriggerData->GetResetWin2(i),0);
  82         }
  83 }
  84
  85 //_____________________________________________________________________________
  86 AliVZEROTriggerSimulator::~AliVZEROTriggerSimulator(){
  87 // Destructor
  88   for (Int_t i=0; i<AliVZEROTriggerData::kNCIUBoards; i++) {
  89     delete fBBGate[i];
  90     delete fBGGate[i];
  91     delete fBBLatch[i];
  92     delete fBBReset[i];
  93     delete fBGLatch[i];
  94     delete fBGReset[i];
  95   }
  96 }
  97
  98 //_____________________________________________________________________________
  99 void AliVZEROTriggerSimulator::GenerateBBWindows()
 100 {
 101   // Generates the BB observation window
 102   // In case gates are open the windows are equal to 25ns
 103   if (AreGatesOpen()) {
 104         for (int i=0; i<AliVZEROTriggerData::kNCIUBoards; i++) {
 105                 fBBGate[i] = new AliVZEROLogicalSignal();
 106                 fBBGate[i]->SetStartTime(0.);
 107                 fBBGate[i]->SetStopTime(25.0);
 108         }
 109   }
 110   else {
 111         for (int i=0; i<AliVZEROTriggerData::kNCIUBoards; i++) {
 112                 AliVZEROLogicalSignal clk1BB(fTriggerData->GetClk1Win1(i),fTriggerData->GetDelayClk1Win1(i));
 113                 AliVZEROLogicalSignal clk2BB(fTriggerData->GetClk2Win1(i),fTriggerData->GetDelayClk2Win1(i));
 114                 fBBGate[i] = new AliVZEROLogicalSignal(clk1BB & clk2BB);
 115         }
 116   }
 117 }
 118 //_____________________________________________________________________________
 119 void AliVZEROTriggerSimulator::GenerateBGWindows()
 120 {
 121   // Generates the BG observation window
 122   // In case gates are open the windows are equal to 25ns
 123   if (AreGatesOpen()) {
 124         for (int i=0; i<AliVZEROTriggerData::kNCIUBoards; i++) {
 125                 fBGGate[i] = new AliVZEROLogicalSignal();
 126                 fBGGate[i]->SetStartTime(0.);
 127                 fBGGate[i]->SetStopTime(25.0);
 128         }
 129   }
 130   else {
 131         for (int i=0; i<AliVZEROTriggerData::kNCIUBoards; i++) {
 132                 AliVZEROLogicalSignal clk1BG(fTriggerData->GetClk1Win2(i),fTriggerData->GetDelayClk1Win2(i));
 133                 AliVZEROLogicalSignal clk2BG(fTriggerData->GetClk2Win2(i),fTriggerData->GetDelayClk2Win2(i));
 134                 fBGGate[i] = new AliVZEROLogicalSignal(clk1BG & clk2BG);
 135                 // In VZERO-A we have a shift by -25ns which is controlled by
 136                 // 'Delay Win2' = 7 instead of default 6.
 137                 // The flag is not stored in OCDB so we have manually shift the
 138                 // trigger windows
 139                 if (i < 4) {
 140                   fBGGate[i]->SetStartTime(fBGGate[i]->GetStartTime()-25.0);
 141                   fBGGate[i]->SetStopTime(fBGGate[i]->GetStopTime()-25.0);
 142                 }
 143         }
 144   }
 145 }
 146
 147 //_____________________________________________________________________________
 148 AliVZEROTriggerData * AliVZEROTriggerSimulator::LoadTriggerData() const
 149 {
 150         // Gets Trigger object for VZERO set
 151         AliDebug(1,"Loading Trigger parameters");
 152         AliCDBManager *man = AliCDBManager::Instance();
 153
 154
 155         AliCDBEntry *entry=0;
 156
 157         entry = man->Get("VZERO/Trigger/Data");
 158         if(!entry){
 159                 AliFatal("Load of trigger calibration data from default storage failed!");
 160                 return NULL;
 161         }
 162
 163         // Retrieval of data in directory VZERO/Calib/Trigger:
 164
 165         AliVZEROTriggerData *triggerData = NULL;
 166
 167         if (entry) triggerData = (AliVZEROTriggerData*) entry->GetObject();
 168         if (!triggerData)  AliError("No Trigger data from database !");
 169
 170         return triggerData;
 171 }
 172
 173
 174 //_____________________________________________________________________________
 175 void AliVZEROTriggerSimulator::LoadClockOffset()
 176 {
 177   // This method is used in order to
 178   // retrieve the TDC clock offset including
 179   // roll-over, trig count and CTP L0->L1 delay
 180
 181   AliCDBEntry *entry0 = AliCDBManager::Instance()->Get("VZERO/Calib/Data");
 182   if (!entry0) {
 183     AliFatal("V0 Calib object is not found in OCDB !");
 184     return;
 185   }
 186   AliVZEROCalibData *calibdata = (AliVZEROCalibData*) entry0->GetObject();
 187
 188   AliCDBEntry *entry = AliCDBManager::Instance()->Get("GRP/CTP/CTPtiming");
 189   if (!entry) {
 190     AliFatal("CTP timing parameters are not found in OCDB !");
 191     return;
 192   }
 193   AliCTPTimeParams *ctpParams = (AliCTPTimeParams*)entry->GetObject();
 194   Float_t l1Delay = (Float_t)ctpParams->GetDelayL1L0()*25.0;
 195
 196   AliCDBEntry *entry1 = AliCDBManager::Instance()->Get("GRP/CTP/TimeAlign");
 197   if (!entry1) {
 198     AliFatal("CTP time-alignment is not found in OCDB !");
 199     return;
 200   }
 201   AliCTPTimeParams *ctpTimeAlign = (AliCTPTimeParams*)entry1->GetObject();
 202   l1Delay += ((Float_t)ctpTimeAlign->GetDelayL1L0()*25.0);
 203
 204   for(Int_t board = 0; board < AliVZEROTriggerData::kNCIUBoards; ++board) {
 205     fClockOffset[board] = (((Float_t)calibdata->GetRollOver(board)-
 206                             (Float_t)calibdata->GetTriggerCountOffset(board))*25.0-
 207                            l1Delay+
 208                            kV0Offset);
 209     AliDebug(1,Form("Board %d Offset %f",board,fClockOffset[board]));
 210   }
 211 }
 212
 213 //_____________________________________________________________________________
 214 void AliVZEROTriggerSimulator::Run() {
 215         //AliInfo("Generating VZERO Triggers");
 216
 217         // Loop over VZERO entries
 218         Int_t nEntries = (Int_t)fDigitsTree->GetEntries();
 219         for (Int_t ievt=0; ievt<nEntries; ievt++) {
 220                 fDigitsTree->GetEvent(ievt);
 221
 222                 Int_t nDigits = fDigits->GetEntriesFast();
 223
 224                 for (Int_t iDigit=0; iDigit<nDigits; iDigit++) {
 225                         AliVZEROdigit* digit = (AliVZEROdigit*)fDigits->At(iDigit);
 226
 227                         Int_t integrator = digit->Integrator();
 228                         Int_t pmNumber   = digit->PMNumber();
 229                         Int_t board   = AliVZEROCalibData::GetBoardNumber(pmNumber);
 230                         Int_t channel = AliVZEROCalibData::GetFEEChannelNumber(pmNumber);
 231                         if (board < 0 || channel < 0) continue;
 232
 233                         if(fTriggerData->GetEnableCharge(board,channel)) {
 234                                 fCharges[pmNumber] = digit->ChargeADC(AliVZEROdigit::kNClocks/2);
 235                                 if(fTriggerData->GetPedestalSubtraction(board)) {
 236                                         if(fCharges[pmNumber]>=(Float_t) fTriggerData->GetPedestalCut(integrator,board,channel)){
 237                                                 fCharges[pmNumber] -= (Float_t) fTriggerData->GetPedestal(integrator,board,channel);
 238                                         } else {
 239                                                 fCharges[pmNumber] = 0.;
 240                                         }
 241                                 }
 242                         } else {
 243                                 fCharges[pmNumber] = 0.;
 244                         }
 245
 246                         Float_t time = digit->Time();
 247                         time -= fClockOffset[board];
 248
 249                         AliDebug(10,Form(" Digit: %f %d %d %d %d %d %d %d %d",digit->Time(),
 250                                          digit->ChargeADC(8),digit->ChargeADC(9),digit->ChargeADC(10),
 251                                          digit->ChargeADC(11),digit->ChargeADC(12),digit->ChargeADC(13),
 252                                          digit->ChargeADC(14),digit->ChargeADC(15)));
 253                         AliDebug(10,Form(" PM nb : %d ; TDC= %f(%f)  Enable Time %d charge %d inCoin %d charge %f",
 254                                          pmNumber,time,digit->Time(),
 255                                          fTriggerData->GetEnableTiming(board,channel),fTriggerData->GetEnableCharge(board,channel),
 256                                          fBBGate[board]->IsInCoincidence(time),fCharges[pmNumber]));
 257                         fBBFlags[pmNumber] = fTriggerData->GetEnableTiming(board,channel) && fBBGate[board]->IsInCoincidence(time);
 258                         fBGFlags[pmNumber] = fTriggerData->GetEnableTiming(board,channel) && fBGGate[board]->IsInCoincidence(time);
 259
 260                 } // end of loop over digits
 261         } // end of loop over events in digits tree
 262
 263         Int_t nBBflagsV0A = 0;
 264         Int_t nBBflagsV0C = 0;
 265         Int_t nBGflagsV0A = 0;
 266         Int_t nBGflagsV0C = 0;
 267         Float_t chargeV0A   = 0.;
 268         Float_t chargeV0C   = 0.;
 269         Int_t aBBflagsV0A = 0;
 270         Int_t aBBflagsV0C = 0;
 271         Int_t aBGflagsV0A = 0;
 272         Int_t aBGflagsV0C = 0;
 273
 274         for(int i=0;i<64;i++) {
 275                 if(i<32) {
 276                         nBBflagsV0C += fBBFlags[i];
 277                         nBGflagsV0C += fBGFlags[i];
 278                         chargeV0C += fCharges[i];
 279                         if (fBBFlags[i]) aBBflagsV0C |= (1 << i);
 280                         if (fBGFlags[i]) aBGflagsV0C |= (1 << i);
 281                 } else {
 282                         nBBflagsV0A += fBBFlags[i];
 283                         nBGflagsV0A += fBGFlags[i];
 284                         chargeV0A += fCharges[i];
 285                         if (fBBFlags[i]) aBBflagsV0A |= (1 << (i-32));
 286                         if (fBGFlags[i]) aBGflagsV0A |= (1 << (i-32));
 287                 }
 288                 //AliInfo(Form("Ch %d BB=%d BG=%d",i,fBBFlags[i],fBGFlags[i] ));
 289         }
 290
 291         // Store the BB and BG flags in the digits tree (user info)
 292         fDigitsTree->GetUserInfo()->Add(new TParameter<int>("BBflagsV0A",aBBflagsV0A));
 293         fDigitsTree->GetUserInfo()->Add(new TParameter<int>("BBflagsV0C",aBBflagsV0C));
 294         fDigitsTree->GetUserInfo()->Add(new TParameter<int>("BGflagsV0A",aBGflagsV0A));
 295         fDigitsTree->GetUserInfo()->Add(new TParameter<int>("BGflagsV0C",aBGflagsV0C));
 296
 297         // BBA
 298         if(nBBflagsV0A>=fTriggerData->GetBBAThreshold())  SetBBA();
 299
 300         // BBC
 301         if(nBBflagsV0C>=fTriggerData->GetBBCThreshold())  SetBBC();
 302
 303         // BBA_AND_BBC
 304         if(GetBBA() && GetBBC())  SetBBAandBBC();
 305
 306         // BBA_OR_BBC
 307         if(GetBBA() || GetBBC()) SetBBAorBBC();
 308
 309         // BGA
 310         if(nBGflagsV0A>=fTriggerData->GetBGAThreshold()) SetBGA();
 311
 312         // BGC
 313         if(nBGflagsV0C>=fTriggerData->GetBGCThreshold()) SetBGC();
 314
 315         // BGA_AND_BBC (Beam Gas from RB24 side)
 316         if(nBBflagsV0C>=fTriggerData->GetBBCForBGThreshold() && GetBGA()) SetBGAandBBC();
 317
 318         // BGC_AND_BBA (Beam Gas from RB26 side)
 319         if(nBBflagsV0A>=fTriggerData->GetBBAForBGThreshold() && GetBGC()) SetBGCandBBA();
 320
 321         // CTA1_AND_CTC1 (Centrality trigger 1)
 322         if(chargeV0A>=fTriggerData->GetCentralityV0AThrLow() && chargeV0C>=fTriggerData->GetCentralityV0CThrLow()) SetCTA1andCTC1();
 323
 324         // CTA1_OR_CTC1 (Centrality trigger 1)
 325         if(chargeV0A>=fTriggerData->GetCentralityV0AThrLow() || chargeV0C>=fTriggerData->GetCentralityV0CThrLow()) SetCTA1orCTC1();
 326
 327         // CTA2_AND_CTC2 (Centrality trigger 2)
 328         if(chargeV0A>=fTriggerData->GetCentralityV0AThrHigh() && chargeV0C>=fTriggerData->GetCentralityV0CThrHigh()) SetCTA2andCTC2();
 329
 330         // CTA2_OR_CTC2 (Centrality trigger 2)
 331         if(chargeV0A>=fTriggerData->GetCentralityV0AThrHigh() || chargeV0C>=fTriggerData->GetCentralityV0CThrHigh()) SetCTA2orCTC2();
 332
 333         // MTA_AND_MTC (Multiplicity Trigger)
 334         if((nBBflagsV0A<=fTriggerData->GetMultV0AThrHigh() && nBBflagsV0A>=fTriggerData->GetMultV0AThrLow())
 335            && (nBBflagsV0C<=fTriggerData->GetMultV0CThrHigh() && nBBflagsV0C>=fTriggerData->GetMultV0CThrLow()) )
 336                 SetMTAandMTC();
 337
 338         // MTA_OR_MTC (Multiplicity Trigger)
 339         if((nBBflagsV0A<=fTriggerData->GetMultV0AThrHigh() && nBBflagsV0A>=fTriggerData->GetMultV0AThrLow())
 340            || (nBBflagsV0C<=fTriggerData->GetMultV0CThrHigh() && nBBflagsV0C>=fTriggerData->GetMultV0CThrLow()) )
 341                 SetMTAorMTC();
 342
 343         // BGA_OR_BGC
 344         if(GetBGA() || GetBGC()) SetBGAorBGC();
 345
 346         // (BGA and BBC) or (BGC and BBA) (Beam Gas from one of the two sides)
 347         if(GetBGAandBBC() || GetBGCandBBA()) SetBeamGas();
 348
 349 //      AliInfo(Form("BB Flags : V0A = %d  V0C = %d ",nBBflagsV0A, nBBflagsV0C ));
 350 //      AliInfo(Form("BG Flags : V0A = %d  V0C = %d ",nBGflagsV0A, nBGflagsV0C ));
 351 //      AliInfo(Form("Charges  : V0A = %d  V0C = %d ",chargeV0A, chargeV0C ));
 352
 353 }
 354
 355 //_____________________________________________________________________________
 356 Bool_t AliVZEROTriggerSimulator::AreGatesOpen() const {
 357   // The method check if the gates are suppossed to be open
 358   // (corresponding to 'Test Window' flag in DCS).
 359   // Since the flag is not stored in OCDB, we just check if
 360   // all the clock delays are 0 or not.
 361   // This rules should be followed when setting up the detector
 362   // at the level of DCS
 363
 364   for (int i=0; i<AliVZEROTriggerData::kNCIUBoards; i++) {
 365     if (fTriggerData->GetDelayClk1Win1(i)!=0 ||
 366         fTriggerData->GetDelayClk2Win1(i)!=0 ||
 367         fTriggerData->GetDelayClk1Win2(i)!=0 ||
 368         fTriggerData->GetDelayClk2Win2(i)!=0)
 369       return kFALSE;
 370   }
 371   return kTRUE;
 372 }
 373
 374 //_____________________________________________________________________________
 375 void AliVZEROTriggerSimulator::Print(Option_t* /* opt */) const
 376 {
 377   // Prints the trigger windows as
 378   // initialized from the OCDB
 379   for (int i=0; i<AliVZEROTriggerData::kNCIUBoards; i++) {
 380     std::cout << "Board=" << i << "   BB (" << fBBGate[i]->GetStartTime() << " -> " << fBBGate[i]->GetStopTime() << ")   BG (" << fBGGate[i]->GetStartTime() << " -> " << fBGGate[i]->GetStopTime() << ")" << std::endl;
 381   }
 382   std::cout << std::endl;
 383 }
 384
 385