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
  38 #include <TArrayI.h>
  39 #include <TGraph.h>
  40 #include <TMath.h>
  41 #include <Riostream.h>
  42
  43 ClassImp(AliT0Reconstructor)
  44
  45   AliT0Reconstructor:: AliT0Reconstructor(): AliReconstructor(),
  46                                              fdZonA(0),
  47                                              fdZonC(0),
  48                                              fZposition(0),
  49                                              fParam(NULL),
  50                                              fAmpLEDrec(),
  51                                              fQTC(0),
  52                                              fAmpLED(0),
  53                                              fCalib(),
  54                                              fLatencyHPTDC(9000),
  55                                              fLatencyL1(0),
  56                                              fLatencyL1A(0),
  57                                              fLatencyL1C(0),
  58                                              fESDTZEROfriend(NULL)
  59
  60 {
  61   //constructor
  62
  63   fParam = AliT0Parameters::Instance();
  64   fParam->Init();
  65
  66   for (Int_t i=0; i<24; i++){
  67         TGraph* gr = fParam ->GetAmpLEDRec(i);
  68         if (gr) fAmpLEDrec.AddAtAndExpand(gr,i) ;
  69           TGraph* gr1 = fParam ->GetAmpLED(i);
  70           if (gr1) fAmpLED.AddAtAndExpand(gr1,i) ;
  71           TGraph* gr2 = fParam ->GetQTC(i);
  72           if (gr2) fQTC.AddAtAndExpand(gr2,i) ;
  73   }
  74
  75   fLatencyL1 = fParam->GetLatencyL1();
  76   fLatencyL1A = fParam->GetLatencyL1A();
  77   fLatencyL1C = fParam->GetLatencyL1C();
  78   fLatencyHPTDC = fParam->GetLatencyHPTDC();
  79   AliDebug(10,Form(" LatencyL1 %f latencyL1A %f latencyL1C %f latencyHPTDC %f \n",fLatencyL1, fLatencyL1A, fLatencyL1C, fLatencyHPTDC));
  80
  81   // fdZonC = TMath::Abs(fParam->GetZPositionShift("T0/C/PMT1"));
  82   //fdZonA = TMath::Abs(fParam->GetZPositionShift("T0/A/PMT15"));
  83
  84
  85   fCalib = new AliT0Calibrator();
  86   fESDTZEROfriend = new AliESDTZEROfriend();
  87
  88 }
  89
  90 //_____________________________________________________________________________
  91 void AliT0Reconstructor::Reconstruct(TTree*digitsTree, TTree*clustersTree) const
  92
  93 {
  94   // T0 digits reconstruction
  95   Int_t refAmp = GetRecoParam()->GetRefAmp();
  96
  97   TArrayI * timeCFD = new TArrayI(24);
  98   TArrayI * timeLED = new TArrayI(24);
  99   TArrayI * chargeQT0 = new TArrayI(24);
 100   TArrayI * chargeQT1 = new TArrayI(24);
 101
 102
 103   Float_t channelWidth = fParam->GetChannelWidth() ;
 104   Float_t meanVertex = fParam->GetMeanVertex();
 105   Float_t c = 0.0299792; // cm/ps
 106   Double32_t vertex = 9999999;
 107   Double32_t timeDiff=999999, meanTime=999999, timeclock=999999;
 108
 109
 110   AliDebug(1,Form("Start DIGITS reconstruction "));
 111
 112
 113   TBranch *brDigits=digitsTree->GetBranch("T0");
 114   AliT0digit *fDigits = new AliT0digit() ;
 115   if (brDigits) {
 116     brDigits->SetAddress(&fDigits);
 117   }else{
 118     AliError(Form("EXEC Branch T0 digits not found"));
 119      return;
 120   }
 121
 122   digitsTree->GetEvent(0);
 123   digitsTree->GetEntry(0);
 124   brDigits->GetEntry(0);
 125   fDigits->GetTimeCFD(*timeCFD);
 126   fDigits->GetTimeLED(*timeLED);
 127   fDigits->GetQT0(*chargeQT0);
 128   fDigits->GetQT1(*chargeQT1);
 129   Int_t onlineMean =  fDigits->MeanTime();
 130
 131   Bool_t tr[5];
 132   for (Int_t i=0; i<5; i++) tr[i]=false;
 133
 134   Double32_t besttimeA=999999;
 135   Double32_t besttimeC=999999;
 136   Int_t pmtBestA=99999;
 137   Int_t pmtBestC=99999;
 138
 139   AliT0RecPoint* frecpoints= new AliT0RecPoint ();
 140   clustersTree->Branch( "T0", "AliT0RecPoint" ,&frecpoints, 405,1);
 141
 142   Float_t time[24], adc[24];
 143   for (Int_t ipmt=0; ipmt<24; ipmt++) {
 144     if(timeCFD->At(ipmt)>0 ){
 145      if(( chargeQT1->At(ipmt) - chargeQT0->At(ipmt))>0)
 146         adc[ipmt] = chargeQT1->At(ipmt) - chargeQT0->At(ipmt);
 147       else
 148         adc[ipmt] = 0;
 149
 150      // time[ipmt] = fCalib-> WalkCorrection(refAmp, ipmt, adc[ipmt],  timeCFD->At(ipmt)) ;
 151
 152       Double_t sl = Double_t(timeLED->At(ipmt) - timeCFD->At(ipmt));
 153       time[ipmt] = fCalib-> WalkCorrection( refAmp,ipmt, Int_t(sl),  timeCFD->At(ipmt) ) ;
 154       AliDebug(10,Form(" ipmt %i QTC %i , time in chann %i (led-cfd) %i ",
 155                        ipmt, Int_t(adc[ipmt]) ,Int_t(time[ipmt]),Int_t( sl)));
 156
 157       Double_t ampMip =((TGraph*)fAmpLED.At(ipmt))->Eval(sl);
 158       Double_t qtMip = ((TGraph*)fQTC.At(ipmt))->Eval(adc[ipmt]);
 159       AliDebug(10,Form("  Amlitude in MIPS LED %f ,  QTC %f in channels %f\n ",ampMip,qtMip, adc[ipmt]));
 160
 161       frecpoints->SetTime(ipmt, Float_t(time[ipmt]) );
 162       frecpoints->SetAmp(ipmt, Float_t( ampMip)); //for cosmic &pp beam
 163       frecpoints->SetAmpLED(ipmt, Float_t(qtMip));
 164
 165     }
 166     else {
 167       time[ipmt] = 0;
 168       adc[ipmt] = 0;
 169     }
 170   }
 171
 172   for (Int_t ipmt=0; ipmt<12; ipmt++){
 173     if(time[ipmt] > 1 ) {
 174       if(time[ipmt]<besttimeC){
 175         besttimeC=time[ipmt]; //timeC
 176         pmtBestC=ipmt;
 177       }
 178     }
 179   }
 180   for ( Int_t ipmt=12; ipmt<24; ipmt++){
 181     if(time[ipmt] > 1) {
 182       if(time[ipmt]<besttimeA) {
 183         besttimeA=time[ipmt]; //timeA
 184         pmtBestA=ipmt;}
 185     }
 186   }
 187   if(besttimeA < 999999) {
 188     frecpoints->SetTimeBestA(Int_t(besttimeA *channelWidth));
 189     tr[1]=true;
 190   }
 191   if( besttimeC < 999999 ) {
 192     frecpoints->SetTimeBestC(Int_t(besttimeC *channelWidth));
 193     tr[2]=true;
 194   }
 195   AliDebug(10,Form(" besttimeA %f ch,  besttimeC %f ch",besttimeA, besttimeC));
 196   if(besttimeA <999999 && besttimeC < 999999 ){
 197     //    timeDiff = (besttimeC - besttimeA)*channelWidth;
 198     timeDiff = (besttimeA - besttimeC)*channelWidth;
 199     meanTime = (besttimeA + besttimeC)/2;// * channelWidth);
 200     timeclock = meanTime *channelWidth ;
 201     vertex = meanVertex - c*(timeDiff)/2.;// + (fdZonA - fdZonC)/2;
 202     tr[0]=true;
 203   }
 204   frecpoints->SetVertex(vertex);
 205   frecpoints->SetMeanTime(meanTime);
 206   frecpoints->SetT0clock(timeclock);
 207   frecpoints->SetT0Trig(tr);
 208
 209   AliInfo(Form("T0 triggers %d %d %d %d %d",tr[0],tr[1],tr[2],tr[3],tr[4]));
 210
 211   //online mean
 212   frecpoints->SetOnlineMean(Int_t(onlineMean));
 213   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));
 214
 215
 216
 217
 218
 219   clustersTree->Fill();
 220
 221   delete timeCFD;
 222   delete timeLED;
 223   delete chargeQT0;
 224   delete chargeQT1;
 225 }
 226
 227
 228 //_______________________________________________________________________
 229
 230 void AliT0Reconstructor::Reconstruct(AliRawReader* rawReader, TTree*recTree) const
 231 {
 232   // T0 raw ->
 233   //
 234   // reference amplitude and time ref. point from reco param
 235
 236   Int_t refAmp = GetRecoParam()->GetRefAmp();
 237   Int_t refPoint = GetRecoParam()->GetRefPoint();
 238
 239   Int_t allData[110][5];
 240
 241   Int_t timeCFD[24], timeLED[24], chargeQT0[24], chargeQT1[24];
 242   Double32_t timeDiff=999999, meanTime=999999, timeclock=999999;
 243   Float_t c = 29.9792458; // cm/ns
 244   Double32_t vertex = 9999999;
 245   Int_t onlineMean=0;
 246   // Float_t meanVertex = fParam->GetMeanVertex();
 247   Float_t meanVertex = 0;
 248   for (Int_t i0=0; i0<105; i0++)
 249     {
 250       for (Int_t j0=0; j0<5; j0++) allData[i0][j0]=0;
 251     }
 252
 253   Double32_t besttimeA=9999999;
 254   Double32_t besttimeC=9999999;
 255   Int_t pmtBestA=99999;
 256   Int_t pmtBestC=99999;
 257
 258   AliT0RecPoint* frecpoints= new AliT0RecPoint ();
 259
 260   recTree->Branch( "T0", "AliT0RecPoint" ,&frecpoints, 405,1);
 261
 262   AliDebug(10," before read data ");
 263   AliT0RawReader myrawreader(rawReader);
 264
 265   UInt_t type =rawReader->GetType();
 266
 267   if (!myrawreader.Next())
 268     AliDebug(1,Form(" no raw data found!!"));
 269   else
 270     {
 271       if(type == 7) {  //only physics
 272       for (Int_t i=0; i<105; i++) {
 273         for (Int_t iHit=0; iHit<5; iHit++)
 274           {
 275             allData[i][iHit] = myrawreader.GetData(i,iHit);
 276           }
 277       }
 278       Int_t ref=0;
 279       if (refPoint>0)
 280       ref = allData[refPoint][0]-5000;
 281
 282       Float_t channelWidth = fParam->GetChannelWidth() ;
 283
 284       //       Int_t meanT0 = fParam->GetMeanT0();
 285
 286
 287           for (Int_t in=0; in<12; in++)
 288             {
 289               timeCFD[in] = allData[in+1][0] ;
 290               timeCFD[in+12] = allData[in+56+1][0] ;
 291               timeLED[in] = allData[in+12+1][0] ;
 292               timeLED[in+12] = allData[in+68+1][0] ;
 293               AliDebug(10, Form(" readed i %i cfdC %i cfdA %i ledC %i ledA%i ",
 294                                 in, timeCFD[in],timeCFD[in+12],timeLED[in],
 295                                 timeLED[in+12]));
 296             }
 297
 298           for (Int_t in=0; in<12;  in++)
 299             {
 300               chargeQT0[in]=allData[2*in+25][0];
 301               chargeQT1[in]=allData[2*in+26][0];
 302             }
 303
 304            for (Int_t in=12; in<24;  in++)
 305              {
 306                chargeQT0[in]=allData[2*in+57][0];
 307                chargeQT1[in]=allData[2*in+58][0];
 308              }
 309
 310            //    } //cosmic with physics event
 311        for (Int_t in=0; in<24; in++)
 312          AliDebug(10, Form(" readed Raw %i %i %i %i %i",
 313                            in, timeLED[in],timeCFD[in],chargeQT0[in],chargeQT1[in]));
 314         onlineMean = allData[49][0];
 315
 316         Double32_t time[24], adc[24],  noncalibtime[24];
 317        for (Int_t ipmt=0; ipmt<24; ipmt++) {
 318          if(timeCFD[ipmt]>0 && timeLED[ipmt]>0){
 319            //for simulated data
 320              //for physics  data
 321            if(( chargeQT0[ipmt] - chargeQT1[ipmt])>0)  {
 322              adc[ipmt] = chargeQT0[ipmt] - chargeQT1[ipmt];
 323            }
 324            else
 325              adc[ipmt] = 0;
 326
 327
 328            //      time[ipmt] = fCalib-> WalkCorrection(refAmp, ipmt, adc[ipmt], timeCFD[ipmt] ) ;
 329
 330            Double_t sl = timeLED[ipmt] - timeCFD[ipmt];
 331            time[ipmt] = fCalib-> WalkCorrection( refAmp,ipmt, Int_t(sl), timeCFD[ipmt] ) ;
 332            AliDebug(5,Form(" ipmt %i QTC %i , time in chann %i (led-cfd) %i ",
 333                             ipmt, Int_t(adc[ipmt]) ,Int_t(time[ipmt]),Int_t( sl)));
 334            Double_t ampMip =( (TGraph*)fAmpLED.At(ipmt))->Eval(sl);
 335            Double_t qtMip = ((TGraph*)fQTC.At(ipmt))->Eval(adc[ipmt]);
 336            AliDebug(10,Form("  Amlitude in MIPS LED %f ; QTC %f;  in channels %i\n ",ampMip,qtMip, adc[ipmt]));
 337            //bad peak removing
 338            if(sl<540) {
 339              frecpoints->SetTime(ipmt, Float_t(time[ipmt]) );
 340              // frecpoints->SetTime(ipmt,Double32_t(timeCFD[ipmt]));
 341              frecpoints->SetAmpLED(ipmt, Double32_t( qtMip)); //for cosmic &pp beam
 342              frecpoints->SetAmp(ipmt, Double32_t(ampMip));
 343              noncalibtime[ipmt]= Double32_t (timeCFD[ipmt]);
 344            }
 345          }
 346          else {
 347            time[ipmt] = 0;
 348            adc[ipmt] = 0;
 349            noncalibtime[ipmt] = 0;
 350          }
 351        }
 352        fESDTZEROfriend->SetT0timeCorr(noncalibtime) ;
 353        for (Int_t ipmt=0; ipmt<12; ipmt++){
 354          if(time[ipmt] > 1
 355             && (timeLED[ipmt] - timeCFD[ipmt])<540 )
 356            {
 357              if(time[ipmt]<besttimeC){
 358                besttimeC=time[ipmt]; //timeC
 359                pmtBestC=ipmt;
 360              }
 361            }
 362        }
 363        for ( Int_t ipmt=12; ipmt<24; ipmt++)
 364          {
 365            if(time[ipmt] > 1
 366               && (timeLED[ipmt] - timeCFD[ipmt])<540 )
 367              {
 368                if(time[ipmt]<besttimeA) {
 369                  besttimeA=time[ipmt]; //timeA
 370                  pmtBestA=ipmt;
 371                }
 372              }
 373          }
 374        if(besttimeA < 999999)
 375          frecpoints->SetTimeBestA(besttimeA * channelWidth - 1000.*fLatencyHPTDC + 1000.*fLatencyL1A);
 376        if( besttimeC < 999999 )
 377          frecpoints->SetTimeBestC(besttimeC * channelWidth - 1000.*fLatencyHPTDC +1000.*fLatencyL1C);
 378        AliDebug(10,Form(" pmtA %i besttimeA %f ps, pmtC %i besttimeC %f ps",
 379                        pmtBestA,besttimeA, pmtBestC,  besttimeC));
 380         if(besttimeA <999999 && besttimeC < 999999 ){
 381          timeDiff = ( besttimeA - besttimeC)* 0.001* channelWidth + fLatencyL1A - fLatencyL1C;
 382          timeclock = channelWidth * Float_t( besttimeA+besttimeC)/2. - 1000.*fLatencyHPTDC + 1000.*fLatencyL1;
 383          meanTime = (besttimeA+besttimeC-2.*Float_t(ref))/2.;
 384          vertex =  meanVertex - c*(timeDiff)/2. ; //+ (fdZonA - fdZonC)/2;
 385         }
 386       }  //if phys event
 387       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));
 388       frecpoints->SetT0clock(timeclock);
 389       frecpoints->SetVertex(vertex);
 390       frecpoints->SetMeanTime(meanTime);
 391       frecpoints->SetOnlineMean(Int_t(onlineMean));
 392         // Set triggers
 393
 394       Bool_t tr[5];
 395       Int_t trchan[5]= {50,51,52,55,56};
 396       for (Int_t i=0; i<5; i++) tr[i]=false;
 397       for (Int_t itr=0; itr<5; itr++) {
 398         if(allData[trchan[itr]][0]>0) tr[itr]=true;
 399         frecpoints->SetT0Trig(tr);
 400       }
 401     } // if (else )raw data
 402   recTree->Fill();
 403   if(frecpoints) delete frecpoints;
 404 }
 405
 406
 407   //____________________________________________________________
 408
 409   void AliT0Reconstructor::FillESD(TTree */*digitsTree*/, TTree *clustersTree, AliESDEvent *pESD) const
 410   {
 411
 412   /***************************************************
 413   Resonstruct digits to vertex position
 414   ****************************************************/
 415
 416   AliDebug(1,Form("Start FillESD T0"));
 417   Float_t channelWidth = fParam->GetChannelWidth() ;
 418   Float_t c = 0.0299792458; // cm/ps
 419   Float_t currentVertex=0, shift=0;
 420   Int_t ncont=0;
 421   const AliESDVertex* vertex = pESD->GetPrimaryVertex();
 422   if (!vertex)        vertex = pESD->GetPrimaryVertexSPD();
 423   if (!vertex)        vertex = pESD->GetPrimaryVertexTPC();
 424   if (!vertex)        vertex = pESD->GetVertex();
 425
 426   if (vertex) {
 427     AliDebug(2, Form("Got %s (%s) from ESD: %f",
 428                     vertex->GetName(), vertex->GetTitle(), vertex->GetZ()));
 429     currentVertex = vertex->GetZ();
 430
 431     ncont = vertex->GetNContributors();
 432     // cout<<" spdver "<<spdver<<" ncont "<<ncont<<endl;
 433     if(ncont>2 ) {
 434       shift = currentVertex/c;
 435       //          cout<<" vertex shif "<<shift<<" vertex "<<spdver<<" IsFromVertexer3D  "<<fverSPD->IsFromVertexer3D()<<endl;
 436     }
 437   }
 438   TTree *treeR = clustersTree;
 439
 440   AliT0RecPoint* frecpoints= new AliT0RecPoint ();
 441   if (!frecpoints) {
 442     AliError("Reconstruct Fill ESD >> no recpoints found");
 443     return;
 444   }
 445
 446   AliDebug(1,Form("Start FillESD T0"));
 447   TBranch *brRec = treeR->GetBranch("T0");
 448   if (brRec) {
 449     brRec->SetAddress(&frecpoints);
 450   }else{
 451     AliError(Form("EXEC Branch T0 rec not found"));
 452     return;
 453   }
 454
 455   brRec->GetEntry(0);
 456   Double32_t amp[24], time[24], ampQTC[24], timecorr[24];
 457   Double32_t* tcorr;
 458   for(Int_t i=0; i<24; i++)
 459     amp[i]=time[i]=ampQTC[i]=timecorr[i]=0;
 460
 461   Double32_t timeClock[3];
 462   Double32_t zPosition = frecpoints -> GetVertex();
 463   Double32_t timeStart = frecpoints -> GetMeanTime();
 464   timeClock[0] = frecpoints -> GetT0clock() ;
 465   timeClock[1] = frecpoints -> GetBestTimeA() + shift;
 466   timeClock[2] = frecpoints -> GetBestTimeC() - shift;
 467   for ( Int_t i=0; i<24; i++) {
 468     time[i] =  frecpoints -> GetTime(i); // ps to ns
 469     if ( time[i] >1) {
 470       amp[i] = frecpoints -> GetAmp(i);
 471       ampQTC[i] = frecpoints -> AmpLED(i);
 472     }
 473   }
 474   Int_t trig= frecpoints ->GetT0Trig();
 475   pESD->SetT0Trig(trig);
 476
 477   pESD->SetT0zVertex(zPosition); //vertex Z position
 478   pESD->SetT0(timeStart);        // interaction time
 479   for(Int_t i=0; i<3; i++)
 480     pESD->SetT0TOF(i,timeClock[i]);   // interaction time (ns)
 481   pESD->SetT0time(time);         // best TOF on each PMT
 482   pESD->SetT0amplitude(amp);     // number of particles(MIPs) on each PMT
 483
 484   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));
 485
 486   if (pESD) {
 487
 488     AliESDfriend *fr = (AliESDfriend*)pESD->FindListObject("AliESDfriend");
 489     if (fr) {
 490       AliDebug(1, Form("Writing TZERO friend data to ESD tree"));
 491
 492       if (ncont>2) {
 493         tcorr = fESDTZEROfriend->GetT0timeCorr();
 494         for ( Int_t i=0; i<24; i++) {
 495           timecorr[i]=tcorr[i];
 496           if(i<12 && time[i]>1) timecorr[i] -=  shift/channelWidth;
 497           if(i>11 && time[i]>1) timecorr[i] +=  shift/channelWidth;
 498         }
 499         fESDTZEROfriend->SetT0timeCorr( timecorr) ;
 500         fESDTZEROfriend->SetT0ampLEDminCFD(amp);
 501         fESDTZEROfriend->SetT0ampQTC(ampQTC);
 502         fr->SetTZEROfriend(fESDTZEROfriend);
 503       }//
 504     }
 505   }
 506
 507
 508
 509 } // vertex in 3 sigma
 510
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 515