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  AliDebug(1,"Start reconstructor ");
  54
  55   fParam = AliT0Parameters::Instance();
  56   fParam->Init();
  57    TString option = GetOption();
  58
  59   for (Int_t i=0; i<24; i++){
  60         TGraph* gr = fParam ->GetAmpLEDRec(i);
  61         if (gr) fAmpLEDrec.AddAtAndExpand(gr,i) ;
  62           TGraph* gr1 = fParam ->GetAmpLED(i);
  63           if (gr1) fAmpLED.AddAtAndExpand(gr1,i) ;
  64           TGraph* gr2 = fParam ->GetQTC(i);
  65           if (gr2) fQTC.AddAtAndExpand(gr2,i) ;
  66
  67   }
  68
  69   fdZonC = TMath::Abs(fParam->GetZPositionShift("T0/C/PMT1"));
  70   fdZonA = TMath::Abs(fParam->GetZPositionShift("T0/A/PMT15"));
  71   fCalib = new AliT0Calibrator();
  72
  73 }
  74 //____________________________________________________________________
  75
  76 AliT0Reconstructor::AliT0Reconstructor(const AliT0Reconstructor &r):
  77   AliReconstructor(r),
  78                                              fdZonA(0),
  79                                              fdZonC(0),
  80                                              fZposition(0),
  81                                              fParam(NULL),
  82                                              fAmpLEDrec(),
  83                                              fQTC(0),
  84                                              fAmpLED(0),
  85                                              fCalib()
  86
  87  {
  88   //
  89   // AliT0Reconstructor copy constructor
  90   //
  91
  92   ((AliT0Reconstructor &) r).Copy(*this);
  93
  94 }
  95
  96 //_____________________________________________________________________________
  97 AliT0Reconstructor &AliT0Reconstructor::operator=(const AliT0Reconstructor &r)
  98 {
  99   //
 100   // Assignment operator
 101   //
 102
 103   if (this != &r) ((AliT0Reconstructor &) r).Copy(*this);
 104   return *this;
 105
 106 }
 107
 108 //_____________________________________________________________________________
 109
 110 void AliT0Reconstructor::Reconstruct(TTree*digitsTree, TTree*clustersTree) const
 111
 112 {
 113   // T0 digits reconstruction
 114   // T0RecPoint writing
 115
 116
 117   TArrayI * timeCFD = new TArrayI(24);
 118   TArrayI * timeLED = new TArrayI(24);
 119   TArrayI * chargeQT0 = new TArrayI(24);
 120   TArrayI * chargeQT1 = new TArrayI(24);
 121
 122
 123   Float_t channelWidth = fParam->GetChannelWidth() ;
 124   Float_t meanVertex = fParam->GetMeanVertex();
 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
 147
 148   Float_t besttimeA=999999;
 149   Float_t besttimeC=999999;
 150   Int_t pmtBestA=99999;
 151   Int_t pmtBestC=99999;
 152   Float_t timeDiff=999999, meanTime=0;
 153
 154   //  Int_t mv2MIP = fParam-> GetmV2Mip();
 155
 156
 157   AliT0RecPoint* frecpoints= new AliT0RecPoint ();
 158   clustersTree->Branch( "T0", "AliT0RecPoint" ,&frecpoints, 405,1);
 159
 160   Float_t time[24], adc[24];
 161   for (Int_t ipmt=0; ipmt<24; ipmt++) {
 162     if(timeCFD->At(ipmt)>0 ){
 163      if(( chargeQT1->At(ipmt) - chargeQT0->At(ipmt))>0)
 164         adc[ipmt] = chargeQT1->At(ipmt) - chargeQT0->At(ipmt);
 165       else
 166         adc[ipmt] = 0;
 167
 168       time[ipmt] = fCalib-> WalkCorrection( ipmt, adc[ipmt], Float_t( timeCFD->At(ipmt))) ;
 169
 170       Double_t sl = Double_t(timeLED->At(ipmt) - timeCFD->At(ipmt));
 171       //    time[ipmt] = fCalib-> WalkCorrection( ipmt, Int_t(sl), timeCFD[ipmt],"cosmic" ) ;
 172       AliDebug(10,Form(" ipmt %i QTC %i , time in chann %i (led-cfd) %i ",
 173                        ipmt, Int_t(adc[ipmt]) ,Int_t(time[ipmt]),Int_t( sl)));
 174       Double_t ampMip =((TGraph*)fAmpLED.At(ipmt))->Eval(sl);
 175       Double_t qtMip = ((TGraph*)fQTC.At(ipmt))->Eval(adc[ipmt]);
 176       AliDebug(10,Form("  Amlitude in MIPS LED %f ,  QTC %f in channels %i\n ",ampMip,qtMip, adc[ipmt]));
 177
 178       frecpoints->SetTime(ipmt, Float_t(time[ipmt]) );
 179       frecpoints->SetAmp(ipmt, Float_t( ampMip)); //for cosmic &pp beam
 180       frecpoints->SetAmpLED(ipmt, Float_t(qtMip));
 181
 182     }
 183     else {
 184       time[ipmt] = 0;
 185       adc[ipmt] = 0;
 186     }
 187   }
 188
 189   for (Int_t ipmt=0; ipmt<12; ipmt++){
 190     if(time[ipmt] > 1 ) {
 191       if(time[ipmt]<besttimeC){
 192         besttimeC=time[ipmt]; //timeC
 193         pmtBestC=ipmt;
 194       }
 195     }
 196   }
 197   for ( Int_t ipmt=12; ipmt<24; ipmt++){
 198     if(time[ipmt] > 1) {
 199       if(time[ipmt]<besttimeA) {
 200         besttimeA=time[ipmt]; //timeA
 201         pmtBestA=ipmt;}
 202     }
 203   }
 204   if(besttimeA !=999999)  frecpoints->SetTimeBestA(Int_t(besttimeA));
 205   if( besttimeC != 999999 ) frecpoints->SetTimeBestC(Int_t(besttimeC));
 206   AliDebug(10,Form(" besttimeA %f ch,  besttimeC %f ch",besttimeA, besttimeC));
 207   Float_t c = 0.0299792; // cm/ps
 208   Float_t vertex = 0;
 209   if(besttimeA !=999999 && besttimeC != 999999 ){
 210     timeDiff = (besttimeC - besttimeA)*channelWidth;
 211     meanTime = Float_t((besttimeA + besttimeC)/2);// * channelWidth);
 212     //    meanTime = (meanT0 - (besttimeA + besttimeC)/2) * channelWidth;
 213     vertex = meanVertex - c*(timeDiff)/2.;// + (fdZonA - fdZonC)/2;
 214     frecpoints->SetVertex(vertex);
 215     frecpoints->SetMeanTime(Int_t(meanTime));
 216     //online mean
 217     frecpoints->SetOnlineMean(Int_t(onlineMean));
 218     AliDebug(10,Form("  timeDiff %f ps,  meanTime %f ps, vertex %f cm online mean %i ps",timeDiff, meanTime,vertex, Int_t(onlineMean)));
 219
 220   }
 221
 222   clustersTree->Fill();
 223
 224   delete timeCFD;
 225   delete timeLED;
 226   delete chargeQT0;
 227   delete chargeQT1;
 228 }
 229
 230
 231 //_______________________________________________________________________
 232
 233 void AliT0Reconstructor::Reconstruct(AliRawReader* rawReader, TTree*recTree) const
 234 {
 235   // T0 raw ->
 236   // T0RecPoint writing
 237
 238   //Q->T-> coefficients !!!! should be measured!!!
 239   Int_t allData[110][5];
 240
 241   Int_t timeCFD[24], timeLED[24], chargeQT0[24], chargeQT1[24];
 242
 243   for (Int_t i0=0; i0<105; i0++)
 244     {
 245       for (Int_t j0=0; j0<5; j0++) allData[i0][j0]=0;
 246     }
 247
 248   Float_t besttimeA=9999999;
 249   Float_t besttimeC=9999999;
 250   Int_t pmtBestA=99999;
 251   Int_t pmtBestC=99999;
 252   Float_t timeDiff=9999999, meanTime=0;
 253   Float_t meanVertex = fParam->GetMeanVertex();
 254   printf("meanVertex %f \n",meanVertex);
 255
 256   AliT0RecPoint* frecpoints= new AliT0RecPoint ();
 257
 258   recTree->Branch( "T0", "AliT0RecPoint" ,&frecpoints, 405,1);
 259
 260
 261   AliDebug(10," before read data ");
 262   AliT0RawReader myrawreader(rawReader);
 263   if (!myrawreader.Next())
 264     AliDebug(1,Form(" no raw data found!!"));
 265   else
 266     {
 267       for (Int_t i=0; i<105; i++) {
 268         for (Int_t iHit=0; iHit<5; iHit++)
 269           {
 270             allData[i][iHit] = myrawreader.GetData(i,iHit);
 271           }
 272       }
 273
 274       Float_t channelWidth = fParam->GetChannelWidth() ;
 275
 276       //       Int_t meanT0 = fParam->GetMeanT0();
 277
 278
 279           for (Int_t in=0; in<12; in++)
 280             {
 281               timeCFD[in] = allData[in+1][0] ;
 282               timeCFD[in+12] = allData[in+56+1][0] ;
 283               timeLED[in] = allData[in+12+1][0] ;
 284               timeLED[in+12] = allData[in+68+1][0] ;
 285               AliDebug(10, Form(" readed i %i cfdC %i cfdA %i ledC %i ledA%i ",
 286                                 in, timeCFD[in],timeCFD[in+12],timeLED[in],
 287                                 timeLED[in+12]));
 288             }
 289
 290           for (Int_t in=0; in<12;  in++)
 291             {
 292               chargeQT0[in]=allData[2*in+25][0];
 293               chargeQT1[in]=allData[2*in+26][0];
 294             }
 295
 296            for (Int_t in=12; in<24;  in++)
 297              {
 298                chargeQT0[in]=allData[2*in+57][0];
 299                chargeQT1[in]=allData[2*in+58][0];
 300              }
 301
 302            //    } //cosmic with physics event
 303        for (Int_t in=0; in<24; in++)
 304          AliDebug(10, Form(" readed Raw %i %i %i %i %i",
 305                            in, timeLED[in],timeCFD[in],chargeQT0[in],chargeQT1[in]));
 306        Int_t onlineMean = allData[49][0];
 307
 308        Float_t time[24], adc[24];
 309        for (Int_t ipmt=0; ipmt<24; ipmt++) {
 310          if(timeCFD[ipmt]>0 && timeLED[ipmt]>0){
 311            //for simulated data
 312              //for physics  data
 313            if(( chargeQT1[ipmt] - chargeQT0[ipmt])>0)
 314              adc[ipmt] = chargeQT1[ipmt] - chargeQT0[ipmt];
 315            else
 316              adc[ipmt] = 0;
 317
 318            time[ipmt] = fCalib-> WalkCorrection( ipmt, adc[ipmt], timeCFD[ipmt]) ;
 319
 320            Double_t sl = timeLED[ipmt] - timeCFD[ipmt];
 321              //    time[ipmt] = fCalib-> WalkCorrection( ipmt, Int_t(sl), timeCFD[ipmt],"cosmic" ) ;
 322            AliDebug(10,Form(" ipmt %i QTC %i , time in chann %i (led-cfd) %i ",
 323                             ipmt, Int_t(adc[ipmt]) ,Int_t(time[ipmt]),Int_t( sl)));
 324            Double_t ampMip =( (TGraph*)fAmpLED.At(ipmt))->Eval(sl);
 325            Double_t qtMip = ((TGraph*)fQTC.At(ipmt))->Eval(adc[ipmt]);
 326            AliDebug(10,Form("  Amlitude in MIPS LED %f ; QTC %f;  in channels %i\n ",ampMip,qtMip, adc[ipmt]));
 327
 328            frecpoints->SetTime(ipmt, Float_t(time[ipmt]) );
 329            frecpoints->SetAmp(ipmt, Float_t( ampMip)); //for cosmic &pp beam
 330            frecpoints->SetAmpLED(ipmt, Float_t(qtMip));
 331
 332          }
 333          else {
 334            time[ipmt] = 0;
 335            adc[ipmt] = 0;
 336          }
 337        }
 338
 339        for (Int_t ipmt=0; ipmt<12; ipmt++){
 340          if(time[ipmt] > 1 ) {
 341            if(time[ipmt]<besttimeC){
 342              besttimeC=time[ipmt]; //timeC
 343              pmtBestC=ipmt;
 344            }
 345          }
 346        }
 347        for ( Int_t ipmt=12; ipmt<24; ipmt++){
 348          if(time[ipmt] > 1) {
 349            if(time[ipmt]<besttimeA) {
 350              besttimeA=time[ipmt]; //timeA
 351              pmtBestA=ipmt;}
 352          }
 353        }
 354        if(besttimeA !=9999999)  frecpoints->SetTimeBestA(Int_t(besttimeA));
 355        if( besttimeC != 9999999 ) frecpoints->SetTimeBestC(Int_t(besttimeC));
 356        AliDebug(5,Form(" pmtA %i besttimeA %f ps, pmtC %i besttimeC %f ps",
 357                        pmtBestA,besttimeA, pmtBestC,  besttimeC));
 358        Float_t c = 0.0299792458; // cm/ps
 359        Float_t vertex = 99999;
 360        if(besttimeA <9999999 && besttimeC < 9999999 ){
 361          timeDiff = ( besttimeC - besttimeA) *channelWidth;
 362          meanTime =  Float_t((besttimeA + besttimeC)/2.);
 363          onlineMean = onlineMean ;
 364          vertex =  meanVertex - c*(timeDiff)/2.; //+ (fdZonA - fdZonC)/2;
 365          frecpoints->SetVertex(vertex);
 366          frecpoints->SetMeanTime(Int_t(meanTime));
 367          frecpoints->SetOnlineMean(Int_t(onlineMean));
 368          AliDebug(5,Form("  timeDiff %f ps,  meanTime %f ps, vertex %f cm meanVertex %f online mean %i ",timeDiff, meanTime,vertex,meanVertex, onlineMean));
 369
 370        }
 371     } // if (else )raw data
 372          recTree->Fill();
 373          if(frecpoints) delete frecpoints;
 374 }
 375
 376
 377 //____________________________________________________________
 378
 379 void AliT0Reconstructor::FillESD(TTree */*digitsTree*/, TTree *clustersTree, AliESDEvent *pESD) const
 380 {
 381
 382   /***************************************************
 383   Resonstruct digits to vertex position
 384   ****************************************************/
 385
 386   AliDebug(1,Form("Start FillESD T0"));
 387
 388   TTree *treeR = clustersTree;
 389
 390    AliT0RecPoint* frecpoints= new AliT0RecPoint ();
 391     if (!frecpoints) {
 392     AliError("Reconstruct Fill ESD >> no recpoints found");
 393     return;
 394   }
 395
 396   AliDebug(1,Form("Start FillESD T0"));
 397   TBranch *brRec = treeR->GetBranch("T0");
 398   if (brRec) {
 399     brRec->SetAddress(&frecpoints);
 400   }else{
 401     AliError(Form("EXEC Branch T0 rec not found"));
 402     return;
 403   }
 404
 405     brRec->GetEntry(0);
 406     Float_t amp[24], time[24];
 407     Float_t  zPosition = frecpoints -> GetVertex();
 408     Float_t timeStart = frecpoints -> GetMeanTime() ;
 409     for ( Int_t i=0; i<24; i++) {
 410       time[i] = Float_t (frecpoints -> GetTime(i)); // ps to ns
 411       amp[i] = frecpoints -> GetAmp(i);
 412     }
 413     pESD->SetT0zVertex(zPosition); //vertex Z position
 414     pESD->SetT0(timeStart);        // interaction time
 415     pESD->SetT0time(time);         // best TOF on each PMT
 416     pESD->SetT0amplitude(amp);     // number of particles(MIPs) on each PMT
 417
 418     AliDebug(1,Form(" Z position %f cm,  T0  %f ps",zPosition , timeStart));
 419
 420 } // vertex in 3 sigma
 421
 422
 423
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 425
 426