T0/AliT0Reconstructor.cxx

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