T0/AliT0Reconstructor.cxx

   1
   2
   3 /**************************************************************************
   4  * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
   5  *                                                                        *
   6  * Author: The ALICE Off-line Project.                                    *
   7  * Contributors are mentioned in the code where appropriate.              *
   8  *                                                                        *
   9  * Permission to use, copy, modify and distribute this software and its   *
  10  * documentation strictly for non-commercial purposes is hereby granted   *
  11  * without fee, provided that the above copyright notice appears in all   *
  12  * copies and that both the copyright notice and this permission notice   *
  13  * appear in the supporting documentation. The authors make no claims     *
  14  * about the suitability of this software for any purpose. It is          *
  15  * provided "as is" without express or implied warranty.                  *
  16  **************************************************************************/
  17
  18 /* $Id$ */
  19 /*********************************************************************
  20  *  T0 reconstruction and filling ESD
  21  *  - reconstruct mean time (interation time)
  22  *  - vertex position
  23  *  -  multiplicity
  24  ********************************************************************/
  25
  26 #include <AliESDEvent.h>
  27 #include "AliLog.h"
  28 #include "AliT0RecPoint.h"
  29 #include "AliRawReader.h"
  30 #include "AliT0RawReader.h"
  31 #include "AliT0digit.h"
  32 #include "AliT0Reconstructor.h"
  33 #include "AliT0Parameters.h"
  34 #include "AliT0Calibrator.h"
  35 #include "AliESDfriend.h"
  36 #include "AliESDTZEROfriend.h"
  37 #include "AliLog.h"
  38 #include "AliCDBEntry.h"
  39 #include "AliCDBManager.h"
  40 #include "AliCTPTimeParams.h"
  41 #include "AliLHCClockPhase.h"
  42 #include "AliT0CalibSeasonTimeShift.h"
  43 #include "AliESDRun.h"
  44
  45 #include <TArrayI.h>
  46 #include <TGraph.h>
  47 #include <TMath.h>
  48 #include <Riostream.h>
  49
  50 ClassImp(AliT0Reconstructor)
  51
  52   AliT0Reconstructor:: AliT0Reconstructor(): AliReconstructor(),
  53                                              fdZonA(0),
  54                                              fdZonC(0),
  55                                              fZposition(0),
  56                                              fParam(NULL),
  57                                              fAmpLEDrec(),
  58                                              fQTC(0),
  59                                              fAmpLED(0),
  60                                              fCalib(),
  61                                              fLatencyHPTDC(9000),
  62                                              fLatencyL1(0),
  63                                              fLatencyL1A(0),
  64                                              fLatencyL1C(0),
  65                                              fGRPdelays(0),
  66                                              fTimeMeanShift(0x0),
  67                                              fTimeSigmaShift(0x0),
  68                                              fESDTZEROfriend(NULL)
  69
  70 {
  71
  72
  73   //constructor
  74   AliCDBEntry *entry = AliCDBManager::Instance()->Get("GRP/CTP/CTPtiming");
  75   if (!entry) AliFatal("CTP timing parameters are not found in OCDB !");
  76   AliCTPTimeParams *ctpParams = (AliCTPTimeParams*)entry->GetObject();
  77   Float_t l1Delay = (Float_t)ctpParams->GetDelayL1L0()*25.0;
  78
  79   AliCDBEntry *entry1 = AliCDBManager::Instance()->Get("GRP/CTP/TimeAlign");
  80   if (!entry1) AliFatal("CTP time-alignment is not found in OCDB !");
  81   AliCTPTimeParams *ctpTimeAlign = (AliCTPTimeParams*)entry1->GetObject();
  82   l1Delay += ((Float_t)ctpTimeAlign->GetDelayL1L0()*25.0);
  83
  84   AliCDBEntry *entry4 = AliCDBManager::Instance()->Get("GRP/Calib/LHCClockPhase");
  85   if (!entry4) AliFatal("LHC clock-phase shift is not found in OCDB !");
  86   AliLHCClockPhase *phase = (AliLHCClockPhase*)entry4->GetObject();
  87
  88   fGRPdelays = l1Delay - phase->GetMeanPhase();
  89
  90   AliCDBEntry *entry5 = AliCDBManager::Instance()->Get("T0/Calib/TimeAdjust");
  91   if (entry5) {
  92     AliT0CalibSeasonTimeShift *timeshift = (AliT0CalibSeasonTimeShift*)entry5->GetObject();
  93     fTimeMeanShift = timeshift->GetT0Means();
  94     fTimeSigmaShift  = timeshift->GetT0Sigmas();
  95     //   timeshift->Print();
  96    }
  97   else
  98     AliWarning("Time Adjust is not found in OCDB !");
  99
 100   fParam = AliT0Parameters::Instance();
 101   fParam->Init();
 102
 103   for (Int_t i=0; i<24; i++){
 104         TGraph* gr = fParam ->GetAmpLEDRec(i);
 105         if (gr) fAmpLEDrec.AddAtAndExpand(gr,i) ;
 106           TGraph* gr1 = fParam ->GetAmpLED(i);
 107           if (gr1) fAmpLED.AddAtAndExpand(gr1,i) ;
 108           TGraph* gr2 = fParam ->GetQTC(i);
 109           if (gr2) fQTC.AddAtAndExpand(gr2,i) ;
 110   }
 111
 112   fLatencyL1 = fParam->GetLatencyL1();
 113   fLatencyL1A = fParam->GetLatencyL1A();
 114   fLatencyL1C = fParam->GetLatencyL1C();
 115   fLatencyHPTDC = fParam->GetLatencyHPTDC();
 116   AliDebug(2,Form(" LatencyL1 %f latencyL1A %f latencyL1C %f latencyHPTDC %f \n",fLatencyL1, fLatencyL1A, fLatencyL1C, fLatencyHPTDC));
 117
 118   // fdZonC = TMath::Abs(fParam->GetZPositionShift("T0/C/PMT1"));
 119   //fdZonA = TMath::Abs(fParam->GetZPositionShift("T0/A/PMT15"));
 120   //here real Z position
 121   fdZonC = TMath::Abs(fParam->GetZPosition("T0/C/PMT1"));
 122   fdZonA = TMath::Abs(fParam->GetZPosition("T0/A/PMT15"));
 123
 124   fCalib = new AliT0Calibrator();
 125   fESDTZEROfriend = new AliESDTZEROfriend();
 126
 127 }
 128
 129 //_____________________________________________________________________________
 130 void AliT0Reconstructor::Reconstruct(TTree*digitsTree, TTree*clustersTree) const
 131
 132 {
 133   // T0 digits reconstruction
 134   Int_t refAmp = Int_t (GetRecoParam()->GetRefAmp());
 135
 136   TArrayI * timeCFD = new TArrayI(24);
 137   TArrayI * timeLED = new TArrayI(24);
 138   TArrayI * chargeQT0 = new TArrayI(24);
 139   TArrayI * chargeQT1 = new TArrayI(24);
 140
 141
 142   Float_t channelWidth = fParam->GetChannelWidth() ;
 143   Float_t meanVertex = fParam->GetMeanVertex();
 144   Float_t c = 0.0299792; // cm/ps
 145   Double32_t vertex = 9999999;
 146   Double32_t timeDiff=999999, meanTime=999999, timeclock=999999;
 147
 148
 149   AliDebug(1,Form("Start DIGITS reconstruction "));
 150
 151
 152   TBranch *brDigits=digitsTree->GetBranch("T0");
 153   AliT0digit *fDigits = new AliT0digit() ;
 154   if (brDigits) {
 155     brDigits->SetAddress(&fDigits);
 156   }else{
 157     AliError(Form("EXEC Branch T0 digits not found"));
 158      return;
 159   }
 160
 161   digitsTree->GetEvent(0);
 162   digitsTree->GetEntry(0);
 163   brDigits->GetEntry(0);
 164   fDigits->GetTimeCFD(*timeCFD);
 165   fDigits->GetTimeLED(*timeLED);
 166   fDigits->GetQT0(*chargeQT0);
 167   fDigits->GetQT1(*chargeQT1);
 168   Int_t onlineMean =  fDigits->MeanTime();
 169
 170   Bool_t tr[5];
 171   for (Int_t i=0; i<5; i++) tr[i]=false;
 172
 173   Double32_t besttimeA=999999;
 174   Double32_t besttimeC=999999;
 175   Int_t pmtBestA=99999;
 176   Int_t pmtBestC=99999;
 177
 178   AliT0RecPoint* frecpoints= new AliT0RecPoint ();
 179   clustersTree->Branch( "T0", "AliT0RecPoint" ,&frecpoints);
 180
 181   Float_t time[24], adc[24];
 182   for (Int_t ipmt=0; ipmt<24; ipmt++) {
 183     if(timeCFD->At(ipmt)>0 ){
 184      if(( chargeQT1->At(ipmt) - chargeQT0->At(ipmt))>0)
 185         adc[ipmt] = chargeQT1->At(ipmt) - chargeQT0->At(ipmt);
 186       else
 187         adc[ipmt] = 0;
 188
 189      time[ipmt] = fCalib-> WalkCorrection(refAmp, ipmt, Int_t(adc[ipmt]),  timeCFD->At(ipmt)) ;
 190
 191       Double_t sl = Double_t(timeLED->At(ipmt) - timeCFD->At(ipmt));
 192       //    time[ipmt] = fCalib-> WalkCorrection( refAmp,ipmt, Int_t(sl),  timeCFD->At(ipmt) ) ;
 193       AliDebug(5,Form(" ipmt %i QTC %i , time in chann %i (led-cfd) %i ",
 194                        ipmt, Int_t(adc[ipmt]) ,Int_t(time[ipmt]),Int_t( sl)));
 195
 196       Double_t ampMip =((TGraph*)fAmpLED.At(ipmt))->Eval(sl);
 197       Double_t qtMip = ((TGraph*)fQTC.At(ipmt))->Eval(adc[ipmt]);
 198       AliDebug(5,Form("  Amlitude in MIPS LED %f ,  QTC %f in channels %f\n ",ampMip,qtMip, adc[ipmt]));
 199
 200       frecpoints->SetTime(ipmt, Float_t(time[ipmt]) );
 201       frecpoints->SetAmpLED(ipmt, Float_t( ampMip)); //for cosmic &pp beam
 202       frecpoints->SetAmp(ipmt, Float_t(qtMip));
 203
 204     }
 205     else {
 206       time[ipmt] = 0;
 207       adc[ipmt] = 0;
 208     }
 209   }
 210
 211   for (Int_t ipmt=0; ipmt<12; ipmt++){
 212     if(time[ipmt] > 1 && adc[ipmt]>0.1) {
 213       if(time[ipmt]<besttimeC){
 214         besttimeC=time[ipmt]; //timeC
 215         pmtBestC=ipmt;
 216       }
 217     }
 218   }
 219   for ( Int_t ipmt=12; ipmt<24; ipmt++){
 220     if(time[ipmt] > 1 && adc[ipmt]>0.1) {
 221       if(time[ipmt]<besttimeA) {
 222         besttimeA=time[ipmt]; //timeA
 223         pmtBestA=ipmt;}
 224     }
 225   }
 226   if(besttimeA < 999999) {
 227     frecpoints->SetTimeBestA(Int_t(besttimeA *channelWidth - fdZonA/c));
 228     tr[1]=true;
 229   }
 230   if( besttimeC < 999999 ) {
 231     frecpoints->SetTimeBestC(Int_t(besttimeC *channelWidth - fdZonA/c));
 232     tr[2]=true;
 233   }
 234   AliDebug(5,Form(" besttimeA %f ch,  besttimeC %f ch",besttimeA, besttimeC));
 235   if(besttimeA <999999 && besttimeC < 999999 ){
 236     //    timeDiff = (besttimeC - besttimeA)*channelWidth;
 237     timeDiff = (besttimeA - besttimeC)*channelWidth;
 238     meanTime = (besttimeA + besttimeC)/2;// * channelWidth);
 239     timeclock = meanTime *channelWidth -fdZonA/c ;
 240     vertex = meanVertex - c*(timeDiff)/2.;// + (fdZonA - fdZonC)/2;
 241     tr[0]=true;
 242   }
 243   frecpoints->SetVertex(vertex);
 244   frecpoints->SetMeanTime(meanTime);
 245   frecpoints->SetT0clock(timeclock);
 246   frecpoints->SetT0Trig(tr);
 247
 248   AliDebug(5,Form("T0 triggers %d %d %d %d %d",tr[0],tr[1],tr[2],tr[3],tr[4]));
 249
 250   //online mean
 251   frecpoints->SetOnlineMean(Int_t(onlineMean));
 252   AliDebug(10,Form("  timeDiff %f #channel,  meanTime %f #channel, vertex %f cm online mean %i timeclock %f ps",timeDiff, meanTime,vertex, Int_t(onlineMean), timeclock));
 253
 254
 255
 256
 257
 258   clustersTree->Fill();
 259
 260   delete timeCFD;
 261   delete timeLED;
 262   delete chargeQT0;
 263   delete chargeQT1;
 264 }
 265
 266
 267 //_______________________________________________________________________
 268
 269 void AliT0Reconstructor::Reconstruct(AliRawReader* rawReader, TTree*recTree) const
 270 {
 271   // T0 raw ->
 272   //
 273   // reference amplitude and time ref. point from reco param
 274
 275   Float_t refAmp = GetRecoParam()->GetRefAmp();
 276   Int_t refPoint = 0;
 277   //Bad channel
 278   Int_t badpmt = GetRecoParam()->GetRefPoint();
 279   Int_t low[500], high[500];
 280
 281   Int_t allData[110][5];
 282
 283   Int_t timeCFD[24], timeLED[24], chargeQT0[24], chargeQT1[24];
 284   Double32_t timeDiff=999999, meanTime=999999, timeclock=9999999;
 285   Float_t c = 29.9792458; // cm/ns
 286   Double32_t vertex = 9999999;
 287   Int_t onlineMean=0;
 288   // Float_t meanVertex = fParam->GetMeanVertex();
 289   Float_t meanVertex = 0;
 290   for (Int_t i0=0; i0<110; i0++)
 291     {
 292       for (Int_t j0=0; j0<5; j0++) allData[i0][j0]=0;
 293       low[i0] = Int_t (GetRecoParam()->GetLow(i0));
 294       high[i0] = Int_t (GetRecoParam()->GetHigh(i0));
 295       }
 296
 297   Float_t lowAmpThreshold =  GetRecoParam()->GetLow(200);
 298   Float_t highAmpThreshold =  GetRecoParam()->GetHigh(200);
 299   Double32_t besttimeA=9999999;
 300   Double32_t besttimeC=9999999;
 301   Int_t pmtBestA=99999;
 302   Int_t pmtBestC=99999;
 303
 304   AliT0RecPoint* frecpoints= new AliT0RecPoint ();
 305
 306   recTree->Branch( "T0", "AliT0RecPoint" ,&frecpoints);
 307
 308   AliDebug(10," before read data ");
 309   AliT0RawReader myrawreader(rawReader);
 310
 311   UInt_t type =rawReader->GetType();
 312
 313   if (!myrawreader.Next())
 314     AliDebug(1,Form(" no raw data found!!"));
 315   else
 316     {
 317    for (Int_t i=0; i<24; i++)
 318     {
 319       timeCFD[i]=0; timeLED[i]=0; chargeQT0[i]=0; chargeQT1[i]=0;
 320     }
 321      Int_t fBCID=Int_t (rawReader->GetBCID());
 322       Int_t trmbunch= myrawreader.GetTRMBunchID();
 323       AliDebug(10,Form(" CDH BC ID %i, TRM BC ID %i \n", fBCID, trmbunch ));
 324
 325       if(type == 7  ) {  //only physics
 326         for (Int_t i=0; i<107; i++) {
 327         for (Int_t iHit=0; iHit<5; iHit++)
 328           {
 329             allData[i][iHit] = myrawreader.GetData(i,iHit);
 330           }
 331         }
 332         Int_t ref=0;
 333         if (refPoint>0)
 334           ref = allData[refPoint][0]-5000;
 335
 336         Float_t channelWidth = fParam->GetChannelWidth() ;
 337
 338         //       Int_t meanT0 = fParam->GetMeanT0();
 339
 340         for (Int_t in=0; in<12; in++)
 341           {
 342             for (Int_t iHit=0; iHit<5; iHit++)
 343               {
 344                 if(allData[in+1][iHit] > low[in+1] &&
 345                    allData[in+1][iHit] < high[in+1])
 346                   {
 347                     timeCFD[in] = allData[in+1][iHit] ;
 348                     break;
 349                   }
 350               }
 351             for (Int_t iHit=0; iHit<5; iHit++)
 352               {
 353                 if(allData[in+12+1][iHit] > low[in+12+1] &&
 354                    allData[in+1+12][iHit] < high[in+12+1])
 355                   {
 356                         timeLED[in] = allData[in+12+1][iHit] ;
 357                         break;
 358                   }
 359               }
 360             for (Int_t iHit=0; iHit<5; iHit++)
 361               {
 362                 if(allData[in+1+56][iHit] > low[in+1+56] &&
 363                    allData[in+1+56][iHit] < high[in+1+56])
 364                   {
 365                     timeCFD[in+12] = allData[in+56+1][iHit] ;
 366                     break;
 367                   }
 368               }
 369
 370             for (Int_t iHit=0; iHit<5; iHit++)
 371               {
 372                 if(allData[in+1+68][iHit] > low[in+1+68] &&
 373                    allData[in+1+68][iHit] < high[in+1+68])
 374                   {
 375
 376                     timeLED[in+12] = allData[in+68+1][iHit] ;
 377                     break;
 378                   }
 379               }
 380             AliDebug(5, Form(" readed i %i cfdC %i cfdA %i ledC %i ledA%i ",
 381                               in, timeCFD[in],timeCFD[in+12],timeLED[in],
 382                               timeLED[in+12]));
 383
 384           }
 385
 386
 387         for (Int_t in=0; in<12;  in++)
 388           {
 389             chargeQT0[in]=allData[2*in+25][0];
 390             chargeQT1[in]=allData[2*in+26][0];
 391             AliDebug(10, Form(" readed Raw %i %i %i",
 392                               in, chargeQT0[in],chargeQT1[in]));
 393           }
 394         for (Int_t in=12; in<24;  in++)
 395           {
 396             chargeQT0[in]=allData[2*in+57][0];
 397             chargeQT1[in]=allData[2*in+58][0];
 398             AliDebug(10, Form(" readed Raw %i %i %i",
 399                               in, chargeQT0[in],chargeQT1[in]));
 400
 401           }
 402
 403         for (Int_t iHit=0; iHit<5; iHit++)
 404           {
 405               if(allData[49][iHit] > low[49] &&
 406                  allData[49][iHit] < high[49]){
 407                 onlineMean = allData[49][iHit];
 408                 break;
 409               }
 410           }
 411         Double32_t time[24], adc[24],  noncalibtime[24];
 412         for (Int_t ipmt=0; ipmt<24; ipmt++) {
 413           if(timeCFD[ipmt]>0 && ipmt != badpmt ){
 414            //for simulated data
 415              //for physics  data
 416            if(( chargeQT0[ipmt] - chargeQT1[ipmt])>0)  {
 417              adc[ipmt] = chargeQT0[ipmt] - chargeQT1[ipmt];
 418            }
 419            else
 420              adc[ipmt] = 0;
 421            time[ipmt] = fCalib-> WalkCorrection(Int_t (refAmp), ipmt, Int_t(adc[ipmt]), timeCFD[ipmt] ) ;
 422
 423            Double_t sl = timeLED[ipmt] - timeCFD[ipmt];
 424            // time[ipmt] = fCalib-> WalkCorrection( refAmp,ipmt, Int_t(sl), timeCFD[ipmt] ) ;
 425            AliDebug(5,Form(" ipmt %i QTC %i , time in chann %i (led-cfd) %i ",
 426                             ipmt, Int_t(adc[ipmt]) ,Int_t(time[ipmt]),Int_t( sl)));
 427            Double_t ampMip =( (TGraph*)fAmpLED.At(ipmt))->Eval(sl);
 428            Double_t qtMip = ((TGraph*)fQTC.At(ipmt))->Eval(adc[ipmt]);
 429            AliDebug(10,Form("  Amlitude in MIPS LED %f ; QTC %f;  in channels %f\n ",ampMip,qtMip, adc[ipmt]));
 430            //bad peak removing
 431              frecpoints->SetTime(ipmt, Float_t(time[ipmt]) );
 432              // frecpoints->SetTime(ipmt,Double32_t(timeCFD[ipmt]));
 433              frecpoints->SetAmp(ipmt, Double32_t( qtMip)); //for cosmic &pp beam
 434              frecpoints->SetAmpLED(ipmt, Double32_t(ampMip));
 435              noncalibtime[ipmt]= Double32_t (timeCFD[ipmt]);
 436          }
 437          else {
 438            time[ipmt] = 0;
 439            adc[ipmt] = 0;
 440            noncalibtime[ipmt] = 0;
 441          }
 442        }
 443        fESDTZEROfriend->SetT0timeCorr(noncalibtime) ;
 444        for (Int_t ipmt=0; ipmt<12; ipmt++){
 445          if(time[ipmt] > 1 && ipmt != badpmt && adc[ipmt]>lowAmpThreshold && adc[ipmt]<highAmpThreshold)
 446            {
 447              if(time[ipmt]<besttimeC){
 448                   besttimeC=time[ipmt]; //timeC
 449                   pmtBestC=ipmt;
 450              }
 451            }
 452        }
 453        for ( Int_t ipmt=12; ipmt<24; ipmt++)
 454          {
 455            if(time[ipmt] > 1 && ipmt != badpmt && adc[ipmt]>lowAmpThreshold && adc[ipmt]<highAmpThreshold)
 456              {
 457                if(time[ipmt]<besttimeA) {
 458                  besttimeA=time[ipmt]; //timeA
 459                  pmtBestA=ipmt;
 460                }
 461              }
 462          }
 463        if(besttimeA < 999999)
 464          frecpoints->SetTimeBestA(besttimeA * channelWidth - 1000.*fLatencyHPTDC + 1000.*fLatencyL1A - 1000.*fGRPdelays - fTimeMeanShift[1]);
 465
 466        if( besttimeC < 999999 )
 467          frecpoints->SetTimeBestC(besttimeC * channelWidth - 1000.*fLatencyHPTDC +1000.*fLatencyL1C - 1000.*fGRPdelays - fTimeMeanShift[2]);
 468        AliDebug(5,Form(" pmtA %i besttimeA %f shift A %f ps, pmtC %i besttimeC %f shiftC %f ps",
 469                        pmtBestA,besttimeA, fTimeMeanShift[1],
 470
 471                        pmtBestC,  besttimeC,fTimeMeanShift[2]));
 472         if(besttimeA <999999 && besttimeC < 999999 ){
 473          timeDiff = ( besttimeA - besttimeC)* 0.001* channelWidth + fLatencyL1A - fLatencyL1C;
 474          timeclock = channelWidth * Float_t( besttimeA+besttimeC)/2. - 1000.*fLatencyHPTDC + 1000.*fLatencyL1 - 1000.*fGRPdelays - fTimeMeanShift[0];
 475          meanTime = (besttimeA+besttimeC-2.*Float_t(ref))/2.;
 476          vertex =  meanVertex - c*(timeDiff)/2. ; //+ (fdZonA - fdZonC)/2;
 477         }
 478       }  //if phys event
 479       AliDebug(10,Form("  timeDiff %f #channel,  meanTime %f #channel, TOFmean%f  vertex %f cm meanVertex %f online mean %i \n",timeDiff, meanTime,timeclock, vertex,meanVertex, onlineMean));
 480       frecpoints->SetT0clock(timeclock);
 481       frecpoints->SetVertex(vertex);
 482       frecpoints->SetMeanTime(meanTime);
 483       frecpoints->SetOnlineMean(Int_t(onlineMean));
 484         // Set triggers
 485
 486       Bool_t tr[5];
 487       Int_t trchan[5]= {50,51,52,55,56};
 488       for (Int_t i=0; i<5; i++) tr[i]=false;
 489       for (Int_t itr=0; itr<5; itr++) {
 490         for (Int_t iHit=0; iHit<5; iHit++)
 491           {
 492             Int_t trr=trchan[itr];
 493             if( allData[trr][iHit] > 0) tr[itr]=true;
 494           }
 495       }
 496       frecpoints->SetT0Trig(tr);
 497
 498       //Set MPD
 499       if(allData[53][0]>0 && allData[54][0])
 500         frecpoints->SetMultA(allData[53][0]-allData[54][0]);
 501         if(allData[105][0]>0 && allData[106][0])
 502           frecpoints->SetMultC(allData[105][0]-allData[106][0]);
 503
 504
 505     } // if (else )raw data
 506   recTree->Fill();
 507   if(frecpoints) delete frecpoints;
 508 }
 509
 510
 511   //____________________________________________________________
 512
 513   void AliT0Reconstructor::FillESD(TTree */*digitsTree*/, TTree *clustersTree, AliESDEvent *pESD) const
 514   {
 515
 516   /***************************************************
 517   Resonstruct digits to vertex position
 518   ****************************************************/
 519
 520   AliDebug(1,Form("Start FillESD T0"));
 521
 522   pESD ->SetT0spread(fTimeSigmaShift);
 523
 524   Float_t channelWidth = fParam->GetChannelWidth() ;
 525   Float_t c = 0.0299792458; // cm/ps
 526   Float_t currentVertex=0, shift=0;
 527   Int_t ncont=-1;
 528   const AliESDVertex* vertex = pESD->GetPrimaryVertex();
 529   if (!vertex)        vertex = pESD->GetPrimaryVertexSPD();
 530   if (!vertex)        vertex = pESD->GetPrimaryVertexTPC();
 531   if (!vertex)        vertex = pESD->GetVertex();
 532
 533   if (vertex) {
 534     AliDebug(2, Form("Got %s (%s) from ESD: %f",
 535                     vertex->GetName(), vertex->GetTitle(), vertex->GetZ()));
 536     currentVertex = vertex->GetZ();
 537
 538     ncont = vertex->GetNContributors();
 539     //  cout<<"@@ spdver "<<spdver<<" ncont "<<ncont<<endl;
 540     if(ncont>0 ) {
 541       shift = currentVertex/c;
 542     }
 543   }
 544   TTree *treeR = clustersTree;
 545
 546   AliT0RecPoint* frecpoints= new AliT0RecPoint ();
 547   if (!frecpoints) {
 548     AliError("Reconstruct Fill ESD >> no recpoints found");
 549     return;
 550   }
 551
 552   AliDebug(1,Form("Start FillESD T0"));
 553   TBranch *brRec = treeR->GetBranch("T0");
 554   if (brRec) {
 555     brRec->SetAddress(&frecpoints);
 556   }else{
 557     AliError(Form("EXEC Branch T0 rec not found"));
 558     return;
 559   }
 560
 561   brRec->GetEntry(0);
 562   Double32_t amp[24], time[24], ampQTC[24], timecorr[24];
 563   Double32_t* tcorr;
 564   for(Int_t i=0; i<24; i++)
 565     amp[i]=time[i]=ampQTC[i]=timecorr[i]=0;
 566
 567
 568   Double32_t timeClock[3];
 569   Double32_t zPosition = frecpoints -> GetVertex();
 570   Double32_t timeStart = frecpoints -> GetMeanTime();
 571   timeClock[0] = frecpoints -> GetT0clock() ;
 572   timeClock[1] = frecpoints -> GetBestTimeA() + shift;
 573   timeClock[2] = frecpoints -> GetBestTimeC() - shift;
 574   for ( Int_t i=0; i<24; i++) {
 575     time[i] =  frecpoints -> GetTime(i); // ps to ns
 576     if ( time[i] >1) {
 577       ampQTC[i] = frecpoints -> GetAmp(i);
 578       amp[i] = frecpoints -> AmpLED(i);
 579       AliDebug(10,Form("T0: time %f  ampQTC %f ampLED %f \n", time[i], ampQTC[i], amp[i]));
 580    }
 581   }
 582   Int_t trig= frecpoints ->GetT0Trig();
 583   pESD->SetT0Trig(trig);
 584
 585   pESD->SetT0zVertex(zPosition); //vertex Z position
 586
 587   Double32_t multA=frecpoints ->GetMultA();
 588   Double32_t multC=frecpoints ->GetMultC();
 589   //  pESD->SetT0MultC(multC);        // multiplicity Cside
 590   //  pESD->SetT0MultA(multA);        // multiplicity Aside
 591   pESD->SetT0(multA); // for backward compatubility
 592   pESD->SetT0clock(multC); // for backward compatubility
 593
 594   for(Int_t i=0; i<3; i++)
 595     pESD->SetT0TOF(i,timeClock[i]);   // interaction time (ns)
 596   pESD->SetT0time(time);         // best TOF on each PMT
 597   pESD->SetT0amplitude(ampQTC);     // number of particles(MIPs) on each PMT
 598
 599   AliDebug(1,Form("T0: Vertex %f (T0A+T0C)/2 %f #channels T0signal %f ns OrA %f ns OrC %f T0trig %i\n",zPosition, timeStart, timeClock[0], timeClock[1], timeClock[2], trig));
 600
 601   if (pESD) {
 602
 603     AliESDfriend *fr = (AliESDfriend*)pESD->FindListObject("AliESDfriend");
 604     if (fr) {
 605       AliDebug(10, Form("Writing TZERO friend data to ESD tree"));
 606
 607       //     if (ncont>2) {
 608         tcorr = fESDTZEROfriend->GetT0timeCorr();
 609         for ( Int_t i=0; i<24; i++) {
 610           if(i<12 && time[i]>1) timecorr[i] = tcorr[i] -  shift/channelWidth;
 611           if(i>11 && time[i]>1) timecorr[i] = tcorr[i] +  shift/channelWidth;
 612           if(time[i]>1)   AliDebug(10,Form("T0 friend : time %f  ampQTC %f ampLED %f \n", timecorr[i], ampQTC[i], amp[i]));
 613         }
 614         fESDTZEROfriend->SetT0timeCorr( timecorr) ;
 615         fESDTZEROfriend->SetT0ampLEDminCFD(amp);
 616         fESDTZEROfriend->SetT0ampQTC(ampQTC);
 617         fr->SetTZEROfriend(fESDTZEROfriend);
 618         //      }//
 619     }
 620   }
 621
 622
 623
 624 } // vertex in 3 sigma
 625
 626
 627
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 629
 630