T0/AliT0Reconstructor.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 /* $Id$ */
  17 /*********************************************************************
  18  *  T0 reconstruction and filling ESD
  19  *  - reconstruct mean time (interation time)
  20  *  - vertex position
  21  *  -  multiplicity
  22  ********************************************************************/
  23
  24 #include <AliESDEvent.h>
  25 #include "AliLog.h"
  26 #include "AliT0RecPoint.h"
  27 #include "AliRawReader.h"
  28 #include "AliT0RawReader.h"
  29 #include "AliT0digit.h"
  30 #include "AliT0Reconstructor.h"
  31 #include "AliT0Parameters.h"
  32 #include "AliT0Calibrator.h"
  33 #include "AliESDfriend.h"
  34 #include "AliLog.h"
  35
  36 #include <TArrayI.h>
  37 #include <TGraph.h>
  38 #include <TMath.h>
  39 #include <Riostream.h>
  40
  41 ClassImp(AliT0Reconstructor)
  42
  43   AliT0Reconstructor:: AliT0Reconstructor(): AliReconstructor(),
  44                                              fdZonA(0),
  45                                              fdZonC(0),
  46                                              fZposition(0),
  47                                              fParam(NULL),
  48                                              fAmpLEDrec(),
  49                                              fQTC(0),
  50                                              fAmpLED(0),
  51                                              fCalib(),
  52                                              fLatencyHPTDC(9000),
  53                                              fLatencyL1(0),
  54                                              fLatencyL1A(0),
  55                                              fLatencyL1C(0)
  56
  57 {
  58   //constructor
  59
  60   fParam = AliT0Parameters::Instance();
  61   fParam->Init();
  62
  63   for (Int_t i=0; i<24; i++){
  64         TGraph* gr = fParam ->GetAmpLEDRec(i);
  65         if (gr) fAmpLEDrec.AddAtAndExpand(gr,i) ;
  66           TGraph* gr1 = fParam ->GetAmpLED(i);
  67           if (gr1) fAmpLED.AddAtAndExpand(gr1,i) ;
  68           TGraph* gr2 = fParam ->GetQTC(i);
  69           if (gr2) fQTC.AddAtAndExpand(gr2,i) ;
  70   }
  71
  72   fLatencyL1 = fParam->GetLatencyL1();
  73   fLatencyL1A = fParam->GetLatencyL1A();
  74   fLatencyL1C = fParam->GetLatencyL1C();
  75   fLatencyHPTDC = fParam->GetLatencyHPTDC();
  76   AliDebug(10,Form(" LatencyL1 %f latencyL1A %f latencyL1C %f latencyHPTDC %f \n",fLatencyL1, fLatencyL1A, fLatencyL1C, fLatencyHPTDC));
  77
  78   // fdZonC = TMath::Abs(fParam->GetZPositionShift("T0/C/PMT1"));
  79   //fdZonA = TMath::Abs(fParam->GetZPositionShift("T0/A/PMT15"));
  80
  81
  82   fCalib = new AliT0Calibrator();
  83
  84 }
  85
  86 //_____________________________________________________________________________
  87 void AliT0Reconstructor::Reconstruct(TTree*digitsTree, TTree*clustersTree) const
  88
  89 {
  90   // T0 digits reconstruction
  91   Int_t refAmp = GetRecoParam()->GetRefAmp();
  92
  93   TArrayI * timeCFD = new TArrayI(24);
  94   TArrayI * timeLED = new TArrayI(24);
  95   TArrayI * chargeQT0 = new TArrayI(24);
  96   TArrayI * chargeQT1 = new TArrayI(24);
  97
  98
  99   Float_t channelWidth = fParam->GetChannelWidth() ;
 100   Float_t meanVertex = fParam->GetMeanVertex();
 101   Float_t c = 0.0299792; // cm/ps
 102   Double32_t vertex = 9999999;
 103   Double32_t timeDiff=999999, meanTime=999999, timeclock=999999;
 104
 105
 106   AliDebug(1,Form("Start DIGITS reconstruction "));
 107
 108
 109   TBranch *brDigits=digitsTree->GetBranch("T0");
 110   AliT0digit *fDigits = new AliT0digit() ;
 111   if (brDigits) {
 112     brDigits->SetAddress(&fDigits);
 113   }else{
 114     AliError(Form("EXEC Branch T0 digits not found"));
 115      return;
 116   }
 117
 118   digitsTree->GetEvent(0);
 119   digitsTree->GetEntry(0);
 120   brDigits->GetEntry(0);
 121   fDigits->GetTimeCFD(*timeCFD);
 122   fDigits->GetTimeLED(*timeLED);
 123   fDigits->GetQT0(*chargeQT0);
 124   fDigits->GetQT1(*chargeQT1);
 125   Int_t onlineMean =  fDigits->MeanTime();
 126
 127   Bool_t tr[5];
 128   for (Int_t i=0; i<5; i++) tr[i]=false;
 129
 130   Double32_t besttimeA=999999;
 131   Double32_t besttimeC=999999;
 132   Int_t pmtBestA=99999;
 133   Int_t pmtBestC=99999;
 134
 135   AliT0RecPoint* frecpoints= new AliT0RecPoint ();
 136   clustersTree->Branch( "T0", "AliT0RecPoint" ,&frecpoints, 405,1);
 137
 138   Float_t time[24], adc[24];
 139   for (Int_t ipmt=0; ipmt<24; ipmt++) {
 140     if(timeCFD->At(ipmt)>0 ){
 141      if(( chargeQT1->At(ipmt) - chargeQT0->At(ipmt))>0)
 142         adc[ipmt] = chargeQT1->At(ipmt) - chargeQT0->At(ipmt);
 143       else
 144         adc[ipmt] = 0;
 145
 146      // time[ipmt] = fCalib-> WalkCorrection(refAmp, ipmt, adc[ipmt],  timeCFD->At(ipmt)) ;
 147
 148       Double_t sl = Double_t(timeLED->At(ipmt) - timeCFD->At(ipmt));
 149       time[ipmt] = fCalib-> WalkCorrection( refAmp,ipmt, Int_t(sl),  timeCFD->At(ipmt) ) ;
 150       AliDebug(10,Form(" ipmt %i QTC %i , time in chann %i (led-cfd) %i ",
 151                        ipmt, Int_t(adc[ipmt]) ,Int_t(time[ipmt]),Int_t( sl)));
 152
 153       Double_t ampMip =((TGraph*)fAmpLED.At(ipmt))->Eval(sl);
 154       Double_t qtMip = ((TGraph*)fQTC.At(ipmt))->Eval(adc[ipmt]);
 155       AliDebug(10,Form("  Amlitude in MIPS LED %f ,  QTC %f in channels %i\n ",ampMip,qtMip, adc[ipmt]));
 156
 157       frecpoints->SetTime(ipmt, Float_t(time[ipmt]) );
 158       frecpoints->SetAmp(ipmt, Float_t( ampMip)); //for cosmic &pp beam
 159       frecpoints->SetAmpLED(ipmt, Float_t(qtMip));
 160
 161     }
 162     else {
 163       time[ipmt] = 0;
 164       adc[ipmt] = 0;
 165     }
 166   }
 167
 168   for (Int_t ipmt=0; ipmt<12; ipmt++){
 169     if(time[ipmt] > 1 ) {
 170       if(time[ipmt]<besttimeC){
 171         besttimeC=time[ipmt]; //timeC
 172         pmtBestC=ipmt;
 173       }
 174     }
 175   }
 176   for ( Int_t ipmt=12; ipmt<24; ipmt++){
 177     if(time[ipmt] > 1) {
 178       if(time[ipmt]<besttimeA) {
 179         besttimeA=time[ipmt]; //timeA
 180         pmtBestA=ipmt;}
 181     }
 182   }
 183   if(besttimeA < 999999) {
 184     frecpoints->SetTimeBestA(Int_t(besttimeA *channelWidth));
 185     tr[1]=true;
 186   }
 187   if( besttimeC < 999999 ) {
 188     frecpoints->SetTimeBestC(Int_t(besttimeC *channelWidth));
 189     tr[2]=true;
 190   }
 191   AliDebug(10,Form(" besttimeA %f ch,  besttimeC %f ch",besttimeA, besttimeC));
 192   if(besttimeA <999999 && besttimeC < 999999 ){
 193     //    timeDiff = (besttimeC - besttimeA)*channelWidth;
 194     timeDiff = (besttimeA - besttimeC)*channelWidth;
 195     meanTime = (besttimeA + besttimeC)/2;// * channelWidth);
 196     timeclock = meanTime *channelWidth ;
 197     vertex = meanVertex - c*(timeDiff)/2.;// + (fdZonA - fdZonC)/2;
 198     tr[0]=true;
 199   }
 200   frecpoints->SetVertex(vertex);
 201   frecpoints->SetMeanTime(meanTime);
 202   frecpoints->SetT0clock(timeclock);
 203   frecpoints->SetT0Trig(tr);
 204
 205   AliInfo(Form("T0 triggers %d %d %d %d %d",tr[0],tr[1],tr[2],tr[3],tr[4]));
 206
 207   //online mean
 208   frecpoints->SetOnlineMean(Int_t(onlineMean));
 209   AliDebug(10,Form("  timeDiff %i #channel,  meanTime %i #channel, vertex %f cm online mean %i timeclock %i ps",timeDiff, meanTime,vertex, Int_t(onlineMean), timeclock));
 210
 211
 212
 213
 214
 215   clustersTree->Fill();
 216
 217   delete timeCFD;
 218   delete timeLED;
 219   delete chargeQT0;
 220   delete chargeQT1;
 221 }
 222
 223
 224 //_______________________________________________________________________
 225
 226 void AliT0Reconstructor::Reconstruct(AliRawReader* rawReader, TTree*recTree) const
 227 {
 228   // T0 raw ->
 229   //
 230   // reference amplitude and time ref. point from reco param
 231
 232   Int_t refAmp = GetRecoParam()->GetRefAmp();
 233   Int_t refPoint = GetRecoParam()->GetRefPoint();
 234
 235   Int_t allData[110][5];
 236
 237   Int_t timeCFD[24], timeLED[24], chargeQT0[24], chargeQT1[24];
 238   Double32_t timeDiff=999999, meanTime=999999, timeclock=999999;
 239   Float_t c = 29.9792458; // cm/ns
 240   Double32_t vertex = 9999999;
 241   Int_t onlineMean=0;
 242   // Float_t meanVertex = fParam->GetMeanVertex();
 243   Float_t meanVertex = 0;
 244
 245   AliDebug(1,Form(" @@@@ Latency ",fLatencyL1));
 246   for (Int_t i0=0; i0<105; i0++)
 247     {
 248       for (Int_t j0=0; j0<5; j0++) allData[i0][j0]=0;
 249     }
 250
 251   Double32_t besttimeA=9999999;
 252   Double32_t besttimeC=9999999;
 253   Int_t pmtBestA=99999;
 254   Int_t pmtBestC=99999;
 255
 256   AliT0RecPoint* frecpoints= new AliT0RecPoint ();
 257
 258   recTree->Branch( "T0", "AliT0RecPoint" ,&frecpoints, 405,1);
 259
 260   AliDebug(10," before read data ");
 261   AliT0RawReader myrawreader(rawReader);
 262
 263   UInt_t type =rawReader->GetType();
 264
 265   if (!myrawreader.Next())
 266     AliDebug(1,Form(" no raw data found!!"));
 267   else
 268     {
 269       if(type == 7) {  //only physics
 270       for (Int_t i=0; i<105; i++) {
 271         for (Int_t iHit=0; iHit<5; iHit++)
 272           {
 273             allData[i][iHit] = myrawreader.GetData(i,iHit);
 274           }
 275       }
 276       Int_t ref=0;
 277       if (refPoint>0)
 278       ref = allData[refPoint][0]-5000;
 279
 280       Float_t channelWidth = fParam->GetChannelWidth() ;
 281
 282       //       Int_t meanT0 = fParam->GetMeanT0();
 283
 284
 285           for (Int_t in=0; in<12; in++)
 286             {
 287               timeCFD[in] = allData[in+1][0] ;
 288               timeCFD[in+12] = allData[in+56+1][0] ;
 289               timeLED[in] = allData[in+12+1][0] ;
 290               timeLED[in+12] = allData[in+68+1][0] ;
 291               AliDebug(10, Form(" readed i %i cfdC %i cfdA %i ledC %i ledA%i ",
 292                                 in, timeCFD[in],timeCFD[in+12],timeLED[in],
 293                                 timeLED[in+12]));
 294             }
 295
 296           for (Int_t in=0; in<12;  in++)
 297             {
 298               chargeQT0[in]=allData[2*in+25][0];
 299               chargeQT1[in]=allData[2*in+26][0];
 300             }
 301
 302            for (Int_t in=12; in<24;  in++)
 303              {
 304                chargeQT0[in]=allData[2*in+57][0];
 305                chargeQT1[in]=allData[2*in+58][0];
 306              }
 307
 308            //    } //cosmic with physics event
 309        for (Int_t in=0; in<24; in++)
 310          AliDebug(10, Form(" readed Raw %i %i %i %i %i",
 311                            in, timeLED[in],timeCFD[in],chargeQT0[in],chargeQT1[in]));
 312         onlineMean = allData[49][0];
 313
 314        Double32_t time[24], adc[24];
 315        for (Int_t ipmt=0; ipmt<24; ipmt++) {
 316          if(timeCFD[ipmt]>0 && timeLED[ipmt]>0){
 317            //for simulated data
 318              //for physics  data
 319            if(( chargeQT1[ipmt] - chargeQT0[ipmt])>0)
 320              adc[ipmt] = chargeQT0[ipmt] - chargeQT1[ipmt];
 321            else
 322              adc[ipmt] = 0;
 323
 324
 325            //      time[ipmt] = fCalib-> WalkCorrection(refAmp, ipmt, adc[ipmt], timeCFD[ipmt] ) ;
 326
 327            Double_t sl = timeLED[ipmt] - timeCFD[ipmt];
 328            time[ipmt] = fCalib-> WalkCorrection( refAmp,ipmt, Int_t(sl), timeCFD[ipmt] ) ;
 329            AliDebug(10,Form(" ipmt %i QTC %i , time in chann %i (led-cfd) %i ",
 330                             ipmt, Int_t(adc[ipmt]) ,Int_t(time[ipmt]),Int_t( sl)));
 331            Double_t ampMip =( (TGraph*)fAmpLED.At(ipmt))->Eval(sl);
 332            Double_t qtMip = ((TGraph*)fQTC.At(ipmt))->Eval(adc[ipmt]);
 333            AliDebug(10,Form("  Amlitude in MIPS LED %f ; QTC %f;  in channels %i\n ",ampMip,qtMip, adc[ipmt]));
 334
 335            frecpoints->SetTime(ipmt, Float_t(time[ipmt]) );
 336            // frecpoints->SetTime(ipmt,Double32_t(timeCFD[ipmt]));
 337            frecpoints->SetAmpLED(ipmt, Double32_t( qtMip)); //for cosmic &pp beam
 338            frecpoints->SetAmp(ipmt, Double32_t(ampMip));
 339
 340          }
 341          else {
 342            time[ipmt] = 0;
 343            adc[ipmt] = 0;
 344          }
 345        }
 346
 347        for (Int_t ipmt=0; ipmt<12; ipmt++){
 348          if(time[ipmt] > 1 ) {
 349            if(time[ipmt]<besttimeC){
 350              besttimeC=time[ipmt]; //timeC
 351              pmtBestC=ipmt;
 352            }
 353          }
 354        }
 355        for ( Int_t ipmt=12; ipmt<24; ipmt++){
 356          if(time[ipmt] > 1) {
 357            if(time[ipmt]<besttimeA) {
 358              besttimeA=time[ipmt]; //timeA
 359              pmtBestA=ipmt;}
 360          }
 361        }
 362        if(besttimeA < 999999)
 363          frecpoints->SetTimeBestA(0.001* besttimeA * channelWidth - fLatencyHPTDC + fLatencyL1A);
 364        if( besttimeC < 999999 )
 365          frecpoints->SetTimeBestC( 0.001 *besttimeC * channelWidth - fLatencyHPTDC + fLatencyL1C);
 366        AliDebug(10,Form(" pmtA %i besttimeA %f ps, pmtC %i besttimeC %f ps",
 367                        pmtBestA,besttimeA, pmtBestC,  besttimeC));
 368         if(besttimeA <999999 && besttimeC < 999999 ){
 369          timeDiff = ( besttimeA - besttimeC) *0.001 * channelWidth + fLatencyL1A - fLatencyL1C;
 370          timeclock = 0.001*channelWidth * Float_t( besttimeA+besttimeC)/2. - fLatencyHPTDC + fLatencyL1;
 371          meanTime = (besttimeA+besttimeC-2.*Float_t(ref))/2.;
 372          vertex =  meanVertex - c*(timeDiff)/2. ; //+ (fdZonA - fdZonC)/2;
 373         }
 374       }  //if phys event
 375       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));
 376       frecpoints->SetT0clock(timeclock);
 377       frecpoints->SetVertex(vertex);
 378       frecpoints->SetMeanTime(meanTime);
 379       frecpoints->SetOnlineMean(Int_t(onlineMean));
 380         // Set triggers
 381
 382       Bool_t tr[5];
 383       Int_t trchan[5]= {50,51,52,55,56};
 384       for (Int_t i=0; i<5; i++) tr[i]=false;
 385       for (Int_t itr=0; itr<5; itr++) {
 386         if(allData[trchan[itr]][0]>0) tr[itr]=true;
 387         frecpoints->SetT0Trig(tr);
 388       }
 389
 390     } // if (else )raw data
 391   recTree->Fill();
 392   if(frecpoints) delete frecpoints;
 393 }
 394
 395
 396   //____________________________________________________________
 397
 398   void AliT0Reconstructor::FillESD(TTree */*digitsTree*/, TTree *clustersTree, AliESDEvent *pESD) const
 399   {
 400
 401   /***************************************************
 402   Resonstruct digits to vertex position
 403   ****************************************************/
 404
 405   AliDebug(1,Form("Start FillESD T0"));
 406   Float_t channelWidth = fParam->GetChannelWidth() ;
 407   Float_t c = 29.9792458; // cm/ns
 408   Float_t currentVertex=0, shift=0;
 409   Int_t ncont=0;
 410   const AliESDVertex* vertex = pESD->GetPrimaryVertex();
 411   if (!vertex)        vertex = pESD->GetPrimaryVertexSPD();
 412   if (!vertex)        vertex = pESD->GetPrimaryVertexTPC();
 413   if (!vertex)        vertex = pESD->GetVertex();
 414
 415   if (vertex) {
 416     AliDebug(2, Form("Got %s (%s) from ESD: %f",
 417                     vertex->GetName(), vertex->GetTitle(), vertex->GetZ()));
 418     currentVertex = vertex->GetZ();
 419
 420     ncont = vertex->GetNContributors();
 421     // cout<<" spdver "<<spdver<<" ncont "<<ncont<<endl;
 422     if(ncont>2 ) {
 423       shift = currentVertex/c;
 424       //          cout<<" vertex shif "<<shift<<" vertex "<<spdver<<" IsFromVertexer3D  "<<fverSPD->IsFromVertexer3D()<<endl;
 425     }
 426   }
 427   TTree *treeR = clustersTree;
 428
 429    AliT0RecPoint* frecpoints= new AliT0RecPoint ();
 430     if (!frecpoints) {
 431     AliError("Reconstruct Fill ESD >> no recpoints found");
 432     return;
 433   }
 434
 435   AliDebug(1,Form("Start FillESD T0"));
 436   TBranch *brRec = treeR->GetBranch("T0");
 437   if (brRec) {
 438     brRec->SetAddress(&frecpoints);
 439   }else{
 440     AliError(Form("EXEC Branch T0 rec not found"));
 441     return;
 442   }
 443
 444     brRec->GetEntry(0);
 445     Double32_t amp[24], time[24], ampQTC[24], timecorr[24];
 446     Double32_t timeClock[3];
 447     Double32_t zPosition = frecpoints -> GetVertex();
 448     Double32_t timeStart = frecpoints -> GetMeanTime();
 449     timeClock[0] = frecpoints -> GetT0clock() ;
 450     timeClock[1] = frecpoints -> GetBestTimeA() + shift;
 451     timeClock[2] = frecpoints -> GetBestTimeC() - shift;
 452     for ( Int_t i=0; i<24; i++) {
 453       time[i] =  frecpoints -> GetTime(i); // ps to ns
 454       amp[i] = frecpoints -> GetAmp(i);
 455       ampQTC[i] = frecpoints -> AmpLED(i);
 456     }
 457     Int_t trig= frecpoints ->GetT0Trig();
 458     pESD->SetT0Trig(trig);
 459
 460     pESD->SetT0zVertex(zPosition); //vertex Z position
 461     pESD->SetT0(timeStart);        // interaction time
 462     for(Int_t i=0; i<3; i++)
 463       pESD->SetT0TOF(i,timeClock[i]);   // interaction time (ns)
 464     pESD->SetT0time(time);         // best TOF on each PMT
 465     pESD->SetT0amplitude(amp);     // number of particles(MIPs) on each PMT
 466
 467     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));
 468
 469     /* if (pESD) {
 470      AliESDfriend *fr = (AliESDfriend*)pESD->FindListObject("AliESDfriend");
 471      if (fr) {
 472         AliDebug(1, Form("Writing TZERO friend data to ESD tree"));
 473
 474         if (ncont>2) {
 475           for ( Int_t i=0; i<24; i++) {
 476             if(i<12) timecorr[i]=time[i]-shift*channelWidth;
 477             if(i>11) timecorr[i]=time[i]-shift*channelWidth;
 478             fr->SetT0timeCorr(timecorr) ;
 479           }
 480             fr->SetT0ampLEDminCFD(amp);
 481             fr->SetT0ampQTC(ampQTC);
 482         }
 483     }
 484   }
 485     */
 486
 487
 488 } // vertex in 3 sigma
 489
 490
 491
 492
 493
 494