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
  34 #include <TArrayI.h>
  35 #include <TGraph.h>
  36 #include <TMath.h>
  37 #include <Riostream.h>
  38
  39 ClassImp(AliT0Reconstructor)
  40
  41   AliT0Reconstructor:: AliT0Reconstructor(): AliReconstructor(),
  42                                              fdZonA(0),
  43                                              fdZonC(0),
  44                                              fZposition(0),
  45                                              fParam(NULL),
  46                                              fAmpLEDrec(),
  47                                              fQTC(0),
  48                                              fAmpLED(0),
  49                                              fCalib()
  50 {
  51   //constructor
  52
  53   fParam = AliT0Parameters::Instance();
  54   fParam->Init();
  55
  56   for (Int_t i=0; i<24; i++){
  57         TGraph* gr = fParam ->GetAmpLEDRec(i);
  58         if (gr) fAmpLEDrec.AddAtAndExpand(gr,i) ;
  59           TGraph* gr1 = fParam ->GetAmpLED(i);
  60           if (gr1) fAmpLED.AddAtAndExpand(gr1,i) ;
  61           TGraph* gr2 = fParam ->GetQTC(i);
  62           if (gr2) fQTC.AddAtAndExpand(gr2,i) ;
  63   }
  64
  65
  66   fdZonC = TMath::Abs(fParam->GetZPositionShift("T0/C/PMT1"));
  67   fdZonA = TMath::Abs(fParam->GetZPositionShift("T0/A/PMT15"));
  68
  69   fCalib = new AliT0Calibrator();
  70
  71 }
  72 //____________________________________________________________________
  73
  74 AliT0Reconstructor::AliT0Reconstructor(const AliT0Reconstructor &r):
  75   AliReconstructor(r),
  76                                              fdZonA(0),
  77                                              fdZonC(0),
  78                                              fZposition(0),
  79                                              fParam(NULL),
  80                                              fAmpLEDrec(0),
  81                                              fQTC(0),
  82                                              fAmpLED(0),
  83                                              fCalib()
  84
  85  {
  86   //
  87   // AliT0Reconstructor copy constructor
  88   //
  89
  90   ((AliT0Reconstructor &) r).Copy(*this);
  91
  92 }
  93
  94 //_____________________________________________________________________________
  95 AliT0Reconstructor &AliT0Reconstructor::operator=(const AliT0Reconstructor &r)
  96 {
  97   //
  98   // Assignment operator
  99   //
 100   if (this != &r) ((AliT0Reconstructor &) r).Copy(*this);
 101   return *this;
 102
 103 }
 104
 105 //_____________________________________________________________________________
 106
 107 void AliT0Reconstructor::Reconstruct(TTree*digitsTree, TTree*clustersTree) const
 108
 109 {
 110   // T0 digits reconstruction
 111   Int_t refAmp = GetRecoParam()->GetRefAmp();
 112
 113   TArrayI * timeCFD = new TArrayI(24);
 114   TArrayI * timeLED = new TArrayI(24);
 115   TArrayI * chargeQT0 = new TArrayI(24);
 116   TArrayI * chargeQT1 = new TArrayI(24);
 117
 118
 119   Float_t channelWidth = fParam->GetChannelWidth() ;
 120   Float_t meanVertex = fParam->GetMeanVertex();
 121   Float_t c = 0.0299792; // cm/ps
 122   Float_t vertex = 9999999;
 123   Int_t timeDiff=999999, meanTime=999999, timeclock=999999;
 124
 125
 126   AliDebug(1,Form("Start DIGITS reconstruction "));
 127
 128
 129   TBranch *brDigits=digitsTree->GetBranch("T0");
 130   AliT0digit *fDigits = new AliT0digit() ;
 131   if (brDigits) {
 132     brDigits->SetAddress(&fDigits);
 133   }else{
 134     AliError(Form("EXEC Branch T0 digits not found"));
 135      return;
 136   }
 137
 138   digitsTree->GetEvent(0);
 139   digitsTree->GetEntry(0);
 140   brDigits->GetEntry(0);
 141   fDigits->GetTimeCFD(*timeCFD);
 142   fDigits->GetTimeLED(*timeLED);
 143   fDigits->GetQT0(*chargeQT0);
 144   fDigits->GetQT1(*chargeQT1);
 145   Int_t onlineMean =  fDigits->MeanTime();
 146   Int_t ref =  fDigits->RefPoint();
 147
 148
 149   Float_t besttimeA=999999;
 150   Float_t besttimeC=999999;
 151   Int_t pmtBestA=99999;
 152   Int_t pmtBestC=99999;
 153
 154   AliT0RecPoint* frecpoints= new AliT0RecPoint ();
 155   clustersTree->Branch( "T0", "AliT0RecPoint" ,&frecpoints, 405,1);
 156
 157   Float_t time[24], adc[24];
 158   for (Int_t ipmt=0; ipmt<24; ipmt++) {
 159     if(timeCFD->At(ipmt)>0 ){
 160      if(( chargeQT1->At(ipmt) - chargeQT0->At(ipmt))>0)
 161         adc[ipmt] = chargeQT1->At(ipmt) - chargeQT0->At(ipmt);
 162       else
 163         adc[ipmt] = 0;
 164
 165       time[ipmt] = fCalib-> WalkCorrection(refAmp, ipmt, adc[ipmt],  timeCFD->At(ipmt)) ;
 166
 167       Double_t sl = Double_t(timeLED->At(ipmt) - timeCFD->At(ipmt));
 168       //    time[ipmt] = fCalib-> WalkCorrection( ipmt, Int_t(sl), timeCFD[ipmt],"cosmic" ) ;
 169       AliDebug(10,Form(" ipmt %i QTC %i , time in chann %i (led-cfd) %i ",
 170                        ipmt, Int_t(adc[ipmt]) ,Int_t(time[ipmt]),Int_t( sl)));
 171
 172       Double_t ampMip =((TGraph*)fAmpLED.At(ipmt))->Eval(sl);
 173       Double_t qtMip = ((TGraph*)fQTC.At(ipmt))->Eval(adc[ipmt]);
 174       AliDebug(10,Form("  Amlitude in MIPS LED %f ,  QTC %f in channels %i\n ",ampMip,qtMip, adc[ipmt]));
 175
 176       frecpoints->SetTime(ipmt, Float_t(time[ipmt]) );
 177       frecpoints->SetAmp(ipmt, Float_t( ampMip)); //for cosmic &pp beam
 178       frecpoints->SetAmpLED(ipmt, Float_t(qtMip));
 179
 180     }
 181     else {
 182       time[ipmt] = 0;
 183       adc[ipmt] = 0;
 184     }
 185   }
 186
 187   for (Int_t ipmt=0; ipmt<12; ipmt++){
 188     if(time[ipmt] > 1 ) {
 189       if(time[ipmt]<besttimeC){
 190         besttimeC=time[ipmt]; //timeC
 191         pmtBestC=ipmt;
 192       }
 193     }
 194   }
 195   for ( Int_t ipmt=12; ipmt<24; ipmt++){
 196     if(time[ipmt] > 1) {
 197       if(time[ipmt]<besttimeA) {
 198         besttimeA=time[ipmt]; //timeA
 199         pmtBestA=ipmt;}
 200     }
 201   }
 202   if(besttimeA !=999999)  frecpoints->SetTimeBestA(Int_t(besttimeA));
 203   if( besttimeC != 999999 ) frecpoints->SetTimeBestC(Int_t(besttimeC));
 204   AliDebug(10,Form(" besttimeA %f ch,  besttimeC %f ch",besttimeA, besttimeC));
 205     if(besttimeA !=999999 && besttimeC != 999999 ){
 206     //    timeDiff = (besttimeC - besttimeA)*channelWidth;
 207     timeDiff = (besttimeA - besttimeC)*channelWidth;
 208     meanTime = Float_t((besttimeA + besttimeC)/2);// * channelWidth);
 209     timeclock = Float_t(meanTime - ref);
 210     vertex = meanVertex - c*(timeDiff)/2.;// + (fdZonA - fdZonC)/2;
 211    }
 212     frecpoints->SetVertex(vertex);
 213     frecpoints->SetMeanTime(meanTime);
 214     frecpoints->SetT0clock(timeclock);
 215     //online mean
 216     frecpoints->SetOnlineMean(Int_t(onlineMean));
 217     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));
 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   Int_t timeDiff=999999, meanTime=999999, timeclock=999999;
 245   Float_t c = 0.0299792458; // cm/ps
 246   Float_t vertex = 9999999;
 247   Int_t onlineMean=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   Float_t besttimeA=9999999;
 254   Float_t besttimeC=9999999;
 255   Int_t pmtBestA=99999;
 256   Int_t pmtBestC=99999;
 257   Float_t meanVertex = fParam->GetMeanVertex();
 258
 259   AliT0RecPoint* frecpoints= new AliT0RecPoint ();
 260
 261   recTree->Branch( "T0", "AliT0RecPoint" ,&frecpoints, 405,1);
 262
 263   AliDebug(10," before read data ");
 264   AliT0RawReader myrawreader(rawReader);
 265
 266   UInt_t type =rawReader->GetType();
 267
 268   if (!myrawreader.Next())
 269     AliDebug(1,Form(" no raw data found!!"));
 270   else
 271     {
 272       if(type == 7) {  //only physics
 273       for (Int_t i=0; i<105; i++) {
 274         for (Int_t iHit=0; iHit<5; iHit++)
 275           {
 276             allData[i][iHit] = myrawreader.GetData(i,iHit);
 277           }
 278       }
 279
 280       Int_t ref = allData[refPoint][0]-5000.;
 281       Float_t channelWidth = fParam->GetChannelWidth() ;
 282
 283       //       Int_t meanT0 = fParam->GetMeanT0();
 284
 285
 286           for (Int_t in=0; in<12; in++)
 287             {
 288               timeCFD[in] = allData[in+1][0] ;
 289               timeCFD[in+12] = allData[in+56+1][0] ;
 290               timeLED[in] = allData[in+12+1][0] ;
 291               timeLED[in+12] = allData[in+68+1][0] ;
 292               AliDebug(10, Form(" readed i %i cfdC %i cfdA %i ledC %i ledA%i ",
 293                                 in, timeCFD[in],timeCFD[in+12],timeLED[in],
 294                                 timeLED[in+12]));
 295             }
 296
 297           for (Int_t in=0; in<12;  in++)
 298             {
 299               chargeQT0[in]=allData[2*in+25][0];
 300               chargeQT1[in]=allData[2*in+26][0];
 301             }
 302
 303            for (Int_t in=12; in<24;  in++)
 304              {
 305                chargeQT0[in]=allData[2*in+57][0];
 306                chargeQT1[in]=allData[2*in+58][0];
 307              }
 308
 309            //    } //cosmic with physics event
 310        for (Int_t in=0; in<24; in++)
 311          AliDebug(10, Form(" readed Raw %i %i %i %i %i",
 312                            in, timeLED[in],timeCFD[in],chargeQT0[in],chargeQT1[in]));
 313         onlineMean = allData[49][0];
 314
 315        Float_t time[24], adc[24];
 316        for (Int_t ipmt=0; ipmt<24; ipmt++) {
 317          if(timeCFD[ipmt]>0 && timeLED[ipmt]>0){
 318            //for simulated data
 319              //for physics  data
 320            if(( chargeQT1[ipmt] - chargeQT0[ipmt])>0)
 321              adc[ipmt] = chargeQT1[ipmt] - chargeQT0[ipmt];
 322            else
 323              adc[ipmt] = 0;
 324
 325
 326            time[ipmt] = fCalib-> WalkCorrection(refAmp, ipmt, adc[ipmt], timeCFD[ipmt] ) ;
 327
 328            Double_t sl = timeLED[ipmt] - timeCFD[ipmt];
 329              //    time[ipmt] = fCalib-> WalkCorrection( ipmt, Int_t(sl), timeCFD[ipmt] ) ;
 330            AliDebug(10,Form(" ipmt %i QTC %i , time in chann %i (led-cfd) %i ",
 331                             ipmt, Int_t(adc[ipmt]) ,Int_t(time[ipmt]),Int_t( sl)));
 332            Double_t ampMip =( (TGraph*)fAmpLED.At(ipmt))->Eval(sl);
 333            Double_t qtMip = ((TGraph*)fQTC.At(ipmt))->Eval(adc[ipmt]);
 334            AliDebug(10,Form("  Amlitude in MIPS LED %f ; QTC %f;  in channels %i\n ",ampMip,qtMip, adc[ipmt]));
 335
 336            frecpoints->SetTime(ipmt, Float_t(time[ipmt]) );
 337            frecpoints->SetAmp(ipmt, Float_t( ampMip)); //for cosmic &pp beam
 338            frecpoints->SetAmpLED(ipmt, Float_t(qtMip));
 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 !=9999999)  frecpoints->SetTimeBestA(Int_t(besttimeA));
 363        if( besttimeC != 9999999 ) frecpoints->SetTimeBestC(Int_t(besttimeC));
 364        AliDebug(5,Form(" pmtA %i besttimeA %f ps, pmtC %i besttimeC %f #channel",
 365                        pmtBestA,besttimeA, pmtBestC,  besttimeC));
 366         if(besttimeA <9999999 && besttimeC < 9999999 ){
 367          timeDiff = ( besttimeA - besttimeC) *channelWidth;
 368          meanTime =  Float_t((besttimeA + besttimeC)/2.);
 369          timeclock = Float_t(meanTime - ref);
 370          vertex =  meanVertex - c*(timeDiff)/2.; //+ (fdZonA - fdZonC)/2;
 371        }
 372       }  //if phys event
 373       frecpoints->SetT0clock(timeclock);
 374       frecpoints->SetVertex(vertex);
 375       frecpoints->SetMeanTime(Int_t(meanTime));
 376       frecpoints->SetOnlineMean(Int_t(onlineMean));
 377       AliDebug(5,Form("  timeDiff %f #channel,  meanTime %f #channel, vertex %f cm meanVertex %f online mean %i ",timeDiff, meanTime,vertex,meanVertex, onlineMean));
 378
 379
 380     } // if (else )raw data
 381          recTree->Fill();
 382          if(frecpoints) delete frecpoints;
 383 }
 384
 385
 386 //____________________________________________________________
 387
 388 void AliT0Reconstructor::FillESD(TTree */*digitsTree*/, TTree *clustersTree, AliESDEvent *pESD) const
 389 {
 390
 391   /***************************************************
 392   Resonstruct digits to vertex position
 393   ****************************************************/
 394
 395   AliDebug(1,Form("Start FillESD T0"));
 396
 397   TTree *treeR = clustersTree;
 398
 399    AliT0RecPoint* frecpoints= new AliT0RecPoint ();
 400     if (!frecpoints) {
 401     AliError("Reconstruct Fill ESD >> no recpoints found");
 402     return;
 403   }
 404
 405   AliDebug(1,Form("Start FillESD T0"));
 406   TBranch *brRec = treeR->GetBranch("T0");
 407   if (brRec) {
 408     brRec->SetAddress(&frecpoints);
 409   }else{
 410     AliError(Form("EXEC Branch T0 rec not found"));
 411     return;
 412   }
 413
 414     brRec->GetEntry(0);
 415     Float_t amp[24], time[24];
 416     Float_t  zPosition = frecpoints -> GetVertex();
 417     Float_t timeStart = frecpoints -> GetMeanTime() ;
 418     Float_t timeClock = frecpoints -> GetT0clock() ;
 419      for ( Int_t i=0; i<24; i++) {
 420       time[i] = Float_t (frecpoints -> GetTime(i)); // ps to ns
 421       amp[i] = frecpoints -> GetAmp(i);
 422     }
 423     pESD->SetT0zVertex(zPosition); //vertex Z position
 424     pESD->SetT0(timeStart);        // interaction time
 425     pESD->SetT0clock(timeClock);   // interaction time with ref.point(spectrum)
 426     pESD->SetT0time(time);         // best TOF on each PMT
 427     pESD->SetT0amplitude(amp);     // number of particles(MIPs) on each PMT
 428
 429     AliDebug(1,Form(" Z position %f cm,  T0  %f ps",zPosition , timeStart));
 430
 431 } // vertex in 3 sigma
 432
 433
 434
 435
 436
 437