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   //here real Z position
  84   fdZonC = TMath::Abs(fParam->GetZPosition("T0/C/PMT1"));
  85   fdZonA = TMath::Abs(fParam->GetZPosition("T0/A/PMT15"));
  86
  87   fCalib = new AliT0Calibrator();
  88   fESDTZEROfriend = new AliESDTZEROfriend();
  89
  90 }
  91
  92 //_____________________________________________________________________________
  93 void AliT0Reconstructor::Reconstruct(TTree*digitsTree, TTree*clustersTree) const
  94
  95 {
  96   // T0 digits reconstruction
  97   Int_t refAmp = GetRecoParam()->GetRefAmp();
  98
  99   TArrayI * timeCFD = new TArrayI(24);
 100   TArrayI * timeLED = new TArrayI(24);
 101   TArrayI * chargeQT0 = new TArrayI(24);
 102   TArrayI * chargeQT1 = new TArrayI(24);
 103
 104
 105   Float_t channelWidth = fParam->GetChannelWidth() ;
 106   Float_t meanVertex = fParam->GetMeanVertex();
 107   Float_t c = 0.0299792; // cm/ps
 108   Double32_t vertex = 9999999;
 109   Double32_t timeDiff=999999, meanTime=999999, timeclock=999999;
 110
 111
 112   AliDebug(1,Form("Start DIGITS reconstruction "));
 113
 114
 115   TBranch *brDigits=digitsTree->GetBranch("T0");
 116   AliT0digit *fDigits = new AliT0digit() ;
 117   if (brDigits) {
 118     brDigits->SetAddress(&fDigits);
 119   }else{
 120     AliError(Form("EXEC Branch T0 digits not found"));
 121      return;
 122   }
 123
 124   digitsTree->GetEvent(0);
 125   digitsTree->GetEntry(0);
 126   brDigits->GetEntry(0);
 127   fDigits->GetTimeCFD(*timeCFD);
 128   fDigits->GetTimeLED(*timeLED);
 129   fDigits->GetQT0(*chargeQT0);
 130   fDigits->GetQT1(*chargeQT1);
 131   Int_t onlineMean =  fDigits->MeanTime();
 132
 133   Bool_t tr[5];
 134   for (Int_t i=0; i<5; i++) tr[i]=false;
 135
 136   Double32_t besttimeA=999999;
 137   Double32_t besttimeC=999999;
 138   Int_t pmtBestA=99999;
 139   Int_t pmtBestC=99999;
 140
 141   AliT0RecPoint* frecpoints= new AliT0RecPoint ();
 142   clustersTree->Branch( "T0", "AliT0RecPoint" ,&frecpoints, 405,1);
 143
 144   Float_t time[24], adc[24];
 145   for (Int_t ipmt=0; ipmt<24; ipmt++) {
 146     if(timeCFD->At(ipmt)>0 ){
 147      if(( chargeQT1->At(ipmt) - chargeQT0->At(ipmt))>0)
 148         adc[ipmt] = chargeQT1->At(ipmt) - chargeQT0->At(ipmt);
 149       else
 150         adc[ipmt] = 0;
 151
 152       time[ipmt] = fCalib-> WalkCorrection(refAmp, ipmt, adc[ipmt],  timeCFD->At(ipmt)) ;
 153
 154       Double_t sl = Double_t(timeLED->At(ipmt) - timeCFD->At(ipmt));
 155       //    time[ipmt] = fCalib-> WalkCorrection( refAmp,ipmt, Int_t(sl),  timeCFD->At(ipmt) ) ;
 156       AliDebug(10,Form(" ipmt %i QTC %i , time in chann %i (led-cfd) %i ",
 157                        ipmt, Int_t(adc[ipmt]) ,Int_t(time[ipmt]),Int_t( sl)));
 158
 159       Double_t ampMip =((TGraph*)fAmpLED.At(ipmt))->Eval(sl);
 160       Double_t qtMip = ((TGraph*)fQTC.At(ipmt))->Eval(adc[ipmt]);
 161       AliDebug(10,Form("  Amlitude in MIPS LED %f ,  QTC %f in channels %f\n ",ampMip,qtMip, adc[ipmt]));
 162
 163       frecpoints->SetTime(ipmt, Float_t(time[ipmt]) );
 164       frecpoints->SetAmp(ipmt, Float_t( ampMip)); //for cosmic &pp beam
 165       frecpoints->SetAmpLED(ipmt, Float_t(qtMip));
 166
 167     }
 168     else {
 169       time[ipmt] = 0;
 170       adc[ipmt] = 0;
 171     }
 172   }
 173
 174   for (Int_t ipmt=0; ipmt<12; ipmt++){
 175     if(time[ipmt] > 1 ) {
 176       if(time[ipmt]<besttimeC){
 177         besttimeC=time[ipmt]; //timeC
 178         pmtBestC=ipmt;
 179       }
 180     }
 181   }
 182   for ( Int_t ipmt=12; ipmt<24; ipmt++){
 183     if(time[ipmt] > 1) {
 184       if(time[ipmt]<besttimeA) {
 185         besttimeA=time[ipmt]; //timeA
 186         pmtBestA=ipmt;}
 187     }
 188   }
 189   if(besttimeA < 999999) {
 190     frecpoints->SetTimeBestA(Int_t(besttimeA *channelWidth - fdZonA/c));
 191     tr[1]=true;
 192   }
 193   if( besttimeC < 999999 ) {
 194     frecpoints->SetTimeBestC(Int_t(besttimeC *channelWidth - fdZonA/c));
 195     tr[2]=true;
 196   }
 197   AliDebug(10,Form(" besttimeA %f ch,  besttimeC %f ch",besttimeA, besttimeC));
 198   if(besttimeA <999999 && besttimeC < 999999 ){
 199     //    timeDiff = (besttimeC - besttimeA)*channelWidth;
 200     timeDiff = (besttimeA - besttimeC)*channelWidth;
 201     meanTime = (besttimeA + besttimeC)/2;// * channelWidth);
 202     timeclock = meanTime *channelWidth -fdZonA/c ;
 203     vertex = meanVertex - c*(timeDiff)/2.;// + (fdZonA - fdZonC)/2;
 204     tr[0]=true;
 205   }
 206   frecpoints->SetVertex(vertex);
 207   frecpoints->SetMeanTime(meanTime);
 208   frecpoints->SetT0clock(timeclock);
 209   frecpoints->SetT0Trig(tr);
 210
 211   AliDebug(10,Form("T0 triggers %d %d %d %d %d",tr[0],tr[1],tr[2],tr[3],tr[4]));
 212
 213   //online mean
 214   frecpoints->SetOnlineMean(Int_t(onlineMean));
 215   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));
 216
 217
 218
 219
 220
 221   clustersTree->Fill();
 222
 223   delete timeCFD;
 224   delete timeLED;
 225   delete chargeQT0;
 226   delete chargeQT1;
 227 }
 228
 229
 230 //_______________________________________________________________________
 231
 232 void AliT0Reconstructor::Reconstruct(AliRawReader* rawReader, TTree*recTree) const
 233 {
 234   // T0 raw ->
 235   //
 236   // reference amplitude and time ref. point from reco param
 237
 238   Int_t refAmp = GetRecoParam()->GetRefAmp();
 239   Int_t refPoint = GetRecoParam()->GetRefPoint();
 240
 241   Int_t allData[110][5];
 242
 243   Int_t timeCFD[24], timeLED[24], chargeQT0[24], chargeQT1[24];
 244   Double32_t timeDiff=999999, meanTime=999999, timeclock=999999;
 245   Float_t c = 29.9792458; // cm/ns
 246   Double32_t vertex = 9999999;
 247   Int_t onlineMean=0;
 248   // Float_t meanVertex = fParam->GetMeanVertex();
 249   Float_t meanVertex = 0;
 250   for (Int_t i0=0; i0<105; i0++)
 251     {
 252       for (Int_t j0=0; j0<5; j0++) allData[i0][j0]=0;
 253     }
 254
 255   Double32_t besttimeA=9999999;
 256   Double32_t besttimeC=9999999;
 257   Int_t pmtBestA=99999;
 258   Int_t pmtBestC=99999;
 259
 260   AliT0RecPoint* frecpoints= new AliT0RecPoint ();
 261
 262   recTree->Branch( "T0", "AliT0RecPoint" ,&frecpoints, 405,1);
 263
 264   AliDebug(10," before read data ");
 265   AliT0RawReader myrawreader(rawReader);
 266
 267   UInt_t type =rawReader->GetType();
 268
 269   if (!myrawreader.Next())
 270     AliDebug(1,Form(" no raw data found!!"));
 271   else
 272     {
 273       Int_t fBCID=Int_t (rawReader->GetBCID());
 274       Int_t trmbunch= myrawreader.GetTRMBunchID();
 275       if(type == 7 &&( trmbunch -fBCID )==37 ) {  //only physics
 276         for (Int_t i=0; i<105; i++) {
 277         for (Int_t iHit=0; iHit<5; iHit++)
 278           {
 279             allData[i][iHit] = myrawreader.GetData(i,iHit);
 280           }
 281         }
 282         Int_t ref=0;
 283         if (refPoint>0)
 284           ref = allData[refPoint][0]-5000;
 285
 286         Float_t channelWidth = fParam->GetChannelWidth() ;
 287
 288         //       Int_t meanT0 = fParam->GetMeanT0();
 289
 290
 291         for (Int_t in=0; in<12; in++)
 292           {
 293             timeCFD[in] = allData[in+1][0] ;
 294             timeCFD[in+12] = allData[in+56+1][0] ;
 295             timeLED[in] = allData[in+12+1][0] ;
 296             timeLED[in+12] = allData[in+68+1][0] ;
 297             AliDebug(10, Form(" readed i %i cfdC %i cfdA %i ledC %i ledA%i ",
 298                               in, timeCFD[in],timeCFD[in+12],timeLED[in],
 299                               timeLED[in+12]));
 300           }
 301
 302         for (Int_t in=0; in<12;  in++)
 303           {
 304             chargeQT0[in]=allData[2*in+25][0];
 305             chargeQT1[in]=allData[2*in+26][0];
 306           }
 307
 308         for (Int_t in=12; in<24;  in++)
 309           {
 310             chargeQT0[in]=allData[2*in+57][0];
 311             chargeQT1[in]=allData[2*in+58][0];
 312           }
 313
 314
 315         for (Int_t in=0; in<24; in++)
 316           AliDebug(10, Form(" readed Raw %i %i %i %i %i",
 317                             in, timeLED[in],timeCFD[in],chargeQT0[in],chargeQT1[in]));
 318         onlineMean = allData[49][0];
 319
 320         Double32_t time[24], adc[24],  noncalibtime[24];
 321         for (Int_t ipmt=0; ipmt<24; ipmt++) {
 322          if(timeCFD[ipmt]>0 && timeLED[ipmt]>0){
 323            //for simulated data
 324              //for physics  data
 325            if(( chargeQT0[ipmt] - chargeQT1[ipmt])>0)  {
 326              adc[ipmt] = chargeQT0[ipmt] - chargeQT1[ipmt];
 327            }
 328            else
 329              adc[ipmt] = 0;
 330
 331
 332            time[ipmt] = fCalib-> WalkCorrection(refAmp, ipmt, adc[ipmt], timeCFD[ipmt] ) ;
 333
 334            Double_t sl = timeLED[ipmt] - timeCFD[ipmt];
 335            // time[ipmt] = fCalib-> WalkCorrection( refAmp,ipmt, Int_t(sl), timeCFD[ipmt] ) ;
 336            AliDebug(5,Form(" ipmt %i QTC %i , time in chann %i (led-cfd) %i ",
 337                             ipmt, Int_t(adc[ipmt]) ,Int_t(time[ipmt]),Int_t( sl)));
 338            Double_t ampMip =( (TGraph*)fAmpLED.At(ipmt))->Eval(sl);
 339            Double_t qtMip = ((TGraph*)fQTC.At(ipmt))->Eval(adc[ipmt]);
 340            AliDebug(10,Form("  Amlitude in MIPS LED %f ; QTC %f;  in channels %i\n ",ampMip,qtMip, adc[ipmt]));
 341            //bad peak removing
 342            if(sl<550) {
 343              frecpoints->SetTime(ipmt, Float_t(time[ipmt]) );
 344              // frecpoints->SetTime(ipmt,Double32_t(timeCFD[ipmt]));
 345              frecpoints->SetAmpLED(ipmt, Double32_t( qtMip)); //for cosmic &pp beam
 346              frecpoints->SetAmp(ipmt, Double32_t(ampMip));
 347              noncalibtime[ipmt]= Double32_t (timeCFD[ipmt]);
 348            }
 349          }
 350          else {
 351            time[ipmt] = 0;
 352            adc[ipmt] = 0;
 353            noncalibtime[ipmt] = 0;
 354          }
 355        }
 356        fESDTZEROfriend->SetT0timeCorr(noncalibtime) ;
 357        for (Int_t ipmt=0; ipmt<12; ipmt++){
 358          if(time[ipmt] > 1
 359             && (timeLED[ipmt] - timeCFD[ipmt])<540 )
 360            {
 361              if(time[ipmt]<besttimeC){
 362                besttimeC=time[ipmt]; //timeC
 363                pmtBestC=ipmt;
 364              }
 365            }
 366        }
 367        for ( Int_t ipmt=12; ipmt<24; ipmt++)
 368          {
 369            if(time[ipmt] > 1
 370               && (timeLED[ipmt] - timeCFD[ipmt])<540 )
 371              {
 372                if(time[ipmt]<besttimeA) {
 373                  besttimeA=time[ipmt]; //timeA
 374                  pmtBestA=ipmt;
 375                }
 376              }
 377          }
 378        if(besttimeA < 999999)
 379          frecpoints->SetTimeBestA(besttimeA * channelWidth - 1000.*fLatencyHPTDC + 1000.*fLatencyL1A);
 380        if( besttimeC < 999999 )
 381          frecpoints->SetTimeBestC(besttimeC * channelWidth - 1000.*fLatencyHPTDC +1000.*fLatencyL1C);
 382        AliDebug(10,Form(" pmtA %i besttimeA %f ps, pmtC %i besttimeC %f ps",
 383                        pmtBestA,besttimeA, pmtBestC,  besttimeC));
 384         if(besttimeA <999999 && besttimeC < 999999 ){
 385          timeDiff = ( besttimeA - besttimeC)* 0.001* channelWidth + fLatencyL1A - fLatencyL1C;
 386          timeclock = channelWidth * Float_t( besttimeA+besttimeC)/2. - 1000.*fLatencyHPTDC + 1000.*fLatencyL1;
 387          meanTime = (besttimeA+besttimeC-2.*Float_t(ref))/2.;
 388          vertex =  meanVertex - c*(timeDiff)/2. ; //+ (fdZonA - fdZonC)/2;
 389         }
 390       }  //if phys event
 391       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));
 392       frecpoints->SetT0clock(timeclock);
 393       frecpoints->SetVertex(vertex);
 394       frecpoints->SetMeanTime(meanTime);
 395       frecpoints->SetOnlineMean(Int_t(onlineMean));
 396         // Set triggers
 397
 398       Bool_t tr[5];
 399       Int_t trchan[5]= {50,51,52,55,56};
 400       for (Int_t i=0; i<5; i++) tr[i]=false;
 401       for (Int_t itr=0; itr<5; itr++) {
 402         if(allData[trchan[itr]][0]>0) tr[itr]=true;
 403         frecpoints->SetT0Trig(tr);
 404       }
 405     } // if (else )raw data
 406   recTree->Fill();
 407   if(frecpoints) delete frecpoints;
 408 }
 409
 410
 411   //____________________________________________________________
 412
 413   void AliT0Reconstructor::FillESD(TTree */*digitsTree*/, TTree *clustersTree, AliESDEvent *pESD) const
 414   {
 415
 416   /***************************************************
 417   Resonstruct digits to vertex position
 418   ****************************************************/
 419
 420   AliDebug(1,Form("Start FillESD T0"));
 421   Float_t channelWidth = fParam->GetChannelWidth() ;
 422   Float_t c = 0.0299792458; // cm/ps
 423   Float_t currentVertex=0, shift=0;
 424   Int_t ncont=0;
 425   const AliESDVertex* vertex = pESD->GetPrimaryVertex();
 426   if (!vertex)        vertex = pESD->GetPrimaryVertexSPD();
 427   if (!vertex)        vertex = pESD->GetPrimaryVertexTPC();
 428   if (!vertex)        vertex = pESD->GetVertex();
 429
 430   if (vertex) {
 431     AliDebug(2, Form("Got %s (%s) from ESD: %f",
 432                     vertex->GetName(), vertex->GetTitle(), vertex->GetZ()));
 433     currentVertex = vertex->GetZ();
 434
 435     ncont = vertex->GetNContributors();
 436     // cout<<" spdver "<<spdver<<" ncont "<<ncont<<endl;
 437     if(ncont>2 ) {
 438       shift = currentVertex/c;
 439       //          cout<<" vertex shif "<<shift<<" vertex "<<spdver<<" IsFromVertexer3D  "<<fverSPD->IsFromVertexer3D()<<endl;
 440     }
 441   }
 442   TTree *treeR = clustersTree;
 443
 444   AliT0RecPoint* frecpoints= new AliT0RecPoint ();
 445   if (!frecpoints) {
 446     AliError("Reconstruct Fill ESD >> no recpoints found");
 447     return;
 448   }
 449
 450   AliDebug(1,Form("Start FillESD T0"));
 451   TBranch *brRec = treeR->GetBranch("T0");
 452   if (brRec) {
 453     brRec->SetAddress(&frecpoints);
 454   }else{
 455     AliError(Form("EXEC Branch T0 rec not found"));
 456     return;
 457   }
 458
 459   brRec->GetEntry(0);
 460   Double32_t amp[24], time[24], ampQTC[24], timecorr[24];
 461   Double32_t* tcorr;
 462   for(Int_t i=0; i<24; i++)
 463     amp[i]=time[i]=ampQTC[i]=timecorr[i]=0;
 464
 465   Double32_t timeClock[3];
 466   Double32_t zPosition = frecpoints -> GetVertex();
 467   Double32_t timeStart = frecpoints -> GetMeanTime();
 468   timeClock[0] = frecpoints -> GetT0clock() ;
 469   timeClock[1] = frecpoints -> GetBestTimeA() + shift;
 470   timeClock[2] = frecpoints -> GetBestTimeC() - shift;
 471   for ( Int_t i=0; i<24; i++) {
 472     time[i] =  frecpoints -> GetTime(i); // ps to ns
 473     if ( time[i] >1) {
 474       amp[i] = frecpoints -> GetAmp(i);
 475       ampQTC[i] = frecpoints -> AmpLED(i);
 476     }
 477   }
 478   Int_t trig= frecpoints ->GetT0Trig();
 479   pESD->SetT0Trig(trig);
 480
 481   pESD->SetT0zVertex(zPosition); //vertex Z position
 482   pESD->SetT0(timeStart);        // interaction time
 483   for(Int_t i=0; i<3; i++)
 484     pESD->SetT0TOF(i,timeClock[i]);   // interaction time (ns)
 485   pESD->SetT0time(time);         // best TOF on each PMT
 486   pESD->SetT0amplitude(amp);     // number of particles(MIPs) on each PMT
 487
 488   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));
 489
 490   if (pESD) {
 491
 492     AliESDfriend *fr = (AliESDfriend*)pESD->FindListObject("AliESDfriend");
 493     if (fr) {
 494       AliDebug(1, Form("Writing TZERO friend data to ESD tree"));
 495
 496       if (ncont>2) {
 497         tcorr = fESDTZEROfriend->GetT0timeCorr();
 498         for ( Int_t i=0; i<24; i++) {
 499           timecorr[i]=tcorr[i];
 500           if(i<12 && time[i]>1) timecorr[i] -=  shift/channelWidth;
 501           if(i>11 && time[i]>1) timecorr[i] +=  shift/channelWidth;
 502         }
 503         fESDTZEROfriend->SetT0timeCorr( timecorr) ;
 504         fESDTZEROfriend->SetT0ampLEDminCFD(amp);
 505         fESDTZEROfriend->SetT0ampQTC(ampQTC);
 506         fr->SetTZEROfriend(fESDTZEROfriend);
 507       }//
 508     }
 509   }
 510
 511
 512
 513 } // vertex in 3 sigma
 514
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