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 void AliT0Reconstructor::Reconstruct(TTree*digitsTree, TTree*clustersTree) const
  75
  76 {
  77   // T0 digits reconstruction
  78   Int_t refAmp = GetRecoParam()->GetRefAmp();
  79
  80   TArrayI * timeCFD = new TArrayI(24);
  81   TArrayI * timeLED = new TArrayI(24);
  82   TArrayI * chargeQT0 = new TArrayI(24);
  83   TArrayI * chargeQT1 = new TArrayI(24);
  84
  85
  86   Float_t channelWidth = fParam->GetChannelWidth() ;
  87   Float_t meanVertex = fParam->GetMeanVertex();
  88   Float_t c = 0.0299792; // cm/ps
  89   Float_t vertex = 9999999;
  90   Int_t timeDiff=999999, meanTime=999999, timeclock=999999;
  91
  92
  93   AliDebug(1,Form("Start DIGITS reconstruction "));
  94
  95
  96   TBranch *brDigits=digitsTree->GetBranch("T0");
  97   AliT0digit *fDigits = new AliT0digit() ;
  98   if (brDigits) {
  99     brDigits->SetAddress(&fDigits);
 100   }else{
 101     AliError(Form("EXEC Branch T0 digits not found"));
 102      return;
 103   }
 104
 105   digitsTree->GetEvent(0);
 106   digitsTree->GetEntry(0);
 107   brDigits->GetEntry(0);
 108   fDigits->GetTimeCFD(*timeCFD);
 109   fDigits->GetTimeLED(*timeLED);
 110   fDigits->GetQT0(*chargeQT0);
 111   fDigits->GetQT1(*chargeQT1);
 112   Int_t onlineMean =  fDigits->MeanTime();
 113   Int_t ref =  fDigits->RefPoint();
 114
 115
 116   Float_t besttimeA=999999;
 117   Float_t besttimeC=999999;
 118   Int_t pmtBestA=99999;
 119   Int_t pmtBestC=99999;
 120
 121   AliT0RecPoint* frecpoints= new AliT0RecPoint ();
 122   clustersTree->Branch( "T0", "AliT0RecPoint" ,&frecpoints, 405,1);
 123
 124   Float_t time[24], adc[24];
 125   for (Int_t ipmt=0; ipmt<24; ipmt++) {
 126     if(timeCFD->At(ipmt)>0 ){
 127      if(( chargeQT1->At(ipmt) - chargeQT0->At(ipmt))>0)
 128         adc[ipmt] = chargeQT1->At(ipmt) - chargeQT0->At(ipmt);
 129       else
 130         adc[ipmt] = 0;
 131
 132      // time[ipmt] = fCalib-> WalkCorrection(refAmp, ipmt, adc[ipmt],  timeCFD->At(ipmt)) ;
 133
 134       Double_t sl = Double_t(timeLED->At(ipmt) - timeCFD->At(ipmt));
 135       time[ipmt] = fCalib-> WalkCorrection( refAmp,ipmt, Int_t(sl),  timeCFD->At(ipmt) ) ;
 136       AliDebug(10,Form(" ipmt %i QTC %i , time in chann %i (led-cfd) %i ",
 137                        ipmt, Int_t(adc[ipmt]) ,Int_t(time[ipmt]),Int_t( sl)));
 138
 139       Double_t ampMip =((TGraph*)fAmpLED.At(ipmt))->Eval(sl);
 140       Double_t qtMip = ((TGraph*)fQTC.At(ipmt))->Eval(adc[ipmt]);
 141       AliDebug(10,Form("  Amlitude in MIPS LED %f ,  QTC %f in channels %i\n ",ampMip,qtMip, adc[ipmt]));
 142
 143       frecpoints->SetTime(ipmt, Float_t(time[ipmt]) );
 144       frecpoints->SetAmp(ipmt, Float_t( ampMip)); //for cosmic &pp beam
 145       frecpoints->SetAmpLED(ipmt, Float_t(qtMip));
 146
 147     }
 148     else {
 149       time[ipmt] = 0;
 150       adc[ipmt] = 0;
 151     }
 152   }
 153
 154   for (Int_t ipmt=0; ipmt<12; ipmt++){
 155     if(time[ipmt] > 1 ) {
 156       if(time[ipmt]<besttimeC){
 157         besttimeC=time[ipmt]; //timeC
 158         pmtBestC=ipmt;
 159       }
 160     }
 161   }
 162   for ( Int_t ipmt=12; ipmt<24; ipmt++){
 163     if(time[ipmt] > 1) {
 164       if(time[ipmt]<besttimeA) {
 165         besttimeA=time[ipmt]; //timeA
 166         pmtBestA=ipmt;}
 167     }
 168   }
 169   if(besttimeA !=999999)  frecpoints->SetTimeBestA(Int_t(besttimeA));
 170   if( besttimeC != 999999 ) frecpoints->SetTimeBestC(Int_t(besttimeC));
 171   AliDebug(10,Form(" besttimeA %f ch,  besttimeC %f ch",besttimeA, besttimeC));
 172     if(besttimeA !=999999 && besttimeC != 999999 ){
 173     //    timeDiff = (besttimeC - besttimeA)*channelWidth;
 174     timeDiff = (besttimeA - besttimeC)*channelWidth;
 175     meanTime = Float_t((besttimeA + besttimeC)/2);// * channelWidth);
 176     timeclock = Float_t(meanTime - ref);
 177     vertex = meanVertex - c*(timeDiff)/2.;// + (fdZonA - fdZonC)/2;
 178    }
 179     frecpoints->SetVertex(vertex);
 180     frecpoints->SetMeanTime(meanTime);
 181     frecpoints->SetT0clock(timeclock);
 182     //online mean
 183     frecpoints->SetOnlineMean(Int_t(onlineMean));
 184     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));
 185
 186     //  }
 187
 188   clustersTree->Fill();
 189
 190   delete timeCFD;
 191   delete timeLED;
 192   delete chargeQT0;
 193   delete chargeQT1;
 194 }
 195
 196
 197 //_______________________________________________________________________
 198
 199 void AliT0Reconstructor::Reconstruct(AliRawReader* rawReader, TTree*recTree) const
 200 {
 201   // T0 raw ->
 202   //
 203   // reference amplitude and time ref. point from reco param
 204
 205   Int_t refAmp = GetRecoParam()->GetRefAmp();
 206   Int_t refPoint = GetRecoParam()->GetRefPoint();
 207
 208   Int_t allData[110][5];
 209
 210   Int_t timeCFD[24], timeLED[24], chargeQT0[24], chargeQT1[24];
 211   Int_t timeDiff=999999, meanTime=999999, timeclock=999999;
 212   Float_t c = 0.0299792458; // cm/ps
 213   Float_t vertex = 9999999;
 214   Int_t onlineMean=0;
 215   for (Int_t i0=0; i0<105; i0++)
 216     {
 217       for (Int_t j0=0; j0<5; j0++) allData[i0][j0]=0;
 218     }
 219
 220   Float_t besttimeA=9999999;
 221   Float_t besttimeC=9999999;
 222   Int_t pmtBestA=99999;
 223   Int_t pmtBestC=99999;
 224   Float_t meanVertex = fParam->GetMeanVertex();
 225
 226   AliT0RecPoint* frecpoints= new AliT0RecPoint ();
 227
 228   recTree->Branch( "T0", "AliT0RecPoint" ,&frecpoints, 405,1);
 229
 230   AliDebug(10," before read data ");
 231   AliT0RawReader myrawreader(rawReader);
 232
 233   UInt_t type =rawReader->GetType();
 234
 235   if (!myrawreader.Next())
 236     AliDebug(1,Form(" no raw data found!!"));
 237   else
 238     {
 239       if(type == 7) {  //only physics
 240       for (Int_t i=0; i<105; i++) {
 241         for (Int_t iHit=0; iHit<5; iHit++)
 242           {
 243             allData[i][iHit] = myrawreader.GetData(i,iHit);
 244           }
 245       }
 246       Int_t ref=0;
 247       if (refPoint>0)
 248       ref = allData[refPoint][0]-5000.;
 249
 250       Float_t channelWidth = fParam->GetChannelWidth() ;
 251
 252       //       Int_t meanT0 = fParam->GetMeanT0();
 253
 254
 255           for (Int_t in=0; in<12; in++)
 256             {
 257               timeCFD[in] = allData[in+1][0] ;
 258               timeCFD[in+12] = allData[in+56+1][0] ;
 259               timeLED[in] = allData[in+12+1][0] ;
 260               timeLED[in+12] = allData[in+68+1][0] ;
 261               AliDebug(10, Form(" readed i %i cfdC %i cfdA %i ledC %i ledA%i ",
 262                                 in, timeCFD[in],timeCFD[in+12],timeLED[in],
 263                                 timeLED[in+12]));
 264             }
 265
 266           for (Int_t in=0; in<12;  in++)
 267             {
 268               chargeQT0[in]=allData[2*in+25][0];
 269               chargeQT1[in]=allData[2*in+26][0];
 270             }
 271
 272            for (Int_t in=12; in<24;  in++)
 273              {
 274                chargeQT0[in]=allData[2*in+57][0];
 275                chargeQT1[in]=allData[2*in+58][0];
 276              }
 277
 278            //    } //cosmic with physics event
 279        for (Int_t in=0; in<24; in++)
 280          AliDebug(10, Form(" readed Raw %i %i %i %i %i",
 281                            in, timeLED[in],timeCFD[in],chargeQT0[in],chargeQT1[in]));
 282         onlineMean = allData[49][0];
 283
 284        Float_t time[24], adc[24];
 285        for (Int_t ipmt=0; ipmt<24; ipmt++) {
 286          if(timeCFD[ipmt]>0 && timeLED[ipmt]>0){
 287            //for simulated data
 288              //for physics  data
 289            if(( chargeQT1[ipmt] - chargeQT0[ipmt])>0)
 290              adc[ipmt] = chargeQT0[ipmt] - chargeQT1[ipmt];
 291            else
 292              adc[ipmt] = 0;
 293
 294
 295            //      time[ipmt] = fCalib-> WalkCorrection(refAmp, ipmt, adc[ipmt], timeCFD[ipmt] ) ;
 296
 297            Double_t sl = timeLED[ipmt] - timeCFD[ipmt];
 298            time[ipmt] = fCalib-> WalkCorrection( refAmp,ipmt, Int_t(sl), timeCFD[ipmt] ) ;
 299            AliDebug(10,Form(" ipmt %i QTC %i , time in chann %i (led-cfd) %i ",
 300                             ipmt, Int_t(adc[ipmt]) ,Int_t(time[ipmt]),Int_t( sl)));
 301            Double_t ampMip =( (TGraph*)fAmpLED.At(ipmt))->Eval(sl);
 302            Double_t qtMip = ((TGraph*)fQTC.At(ipmt))->Eval(adc[ipmt]);
 303            AliDebug(10,Form("  Amlitude in MIPS LED %f ; QTC %f;  in channels %i\n ",ampMip,qtMip, adc[ipmt]));
 304
 305            frecpoints->SetTime(ipmt, Float_t(time[ipmt]) );
 306            frecpoints->SetAmpLED(ipmt, Float_t( qtMip)); //for cosmic &pp beam
 307            frecpoints->SetAmp(ipmt, Float_t(ampMip));
 308
 309          }
 310          else {
 311            time[ipmt] = 0;
 312            adc[ipmt] = 0;
 313          }
 314        }
 315
 316        for (Int_t ipmt=0; ipmt<12; ipmt++){
 317          if(time[ipmt] > 1 ) {
 318            if(time[ipmt]<besttimeC){
 319              besttimeC=time[ipmt]; //timeC
 320              pmtBestC=ipmt;
 321            }
 322          }
 323        }
 324        for ( Int_t ipmt=12; ipmt<24; ipmt++){
 325          if(time[ipmt] > 1) {
 326            if(time[ipmt]<besttimeA) {
 327              besttimeA=time[ipmt]; //timeA
 328              pmtBestA=ipmt;}
 329          }
 330        }
 331        if(besttimeA !=9999999)  frecpoints->SetTimeBestA(Int_t(besttimeA));
 332        if( besttimeC != 9999999 ) frecpoints->SetTimeBestC(Int_t(besttimeC));
 333        AliDebug(5,Form(" pmtA %i besttimeA %f ps, pmtC %i besttimeC %f #channel",
 334                        pmtBestA,besttimeA, pmtBestC,  besttimeC));
 335         if(besttimeA <9999999 && besttimeC < 9999999 ){
 336          timeDiff = ( besttimeA - besttimeC) *channelWidth;
 337          meanTime =  Float_t(((besttimeA-ref) + (besttimeC-ref))/2.);
 338          timeclock = Float_t(meanTime);
 339          vertex =  meanVertex - c*(timeDiff)/2.; //+ (fdZonA - fdZonC)/2;
 340        }
 341       }  //if phys event
 342       frecpoints->SetT0clock(timeclock);
 343       frecpoints->SetVertex(vertex);
 344       frecpoints->SetMeanTime(Int_t(meanTime));
 345       frecpoints->SetOnlineMean(Int_t(onlineMean));
 346       AliDebug(5,Form("  timeDiff %f #channel,  meanTime %f #channel, vertex %f cm meanVertex %f online mean %i ",timeDiff, meanTime,vertex,meanVertex, onlineMean));
 347
 348
 349     } // if (else )raw data
 350          recTree->Fill();
 351          if(frecpoints) delete frecpoints;
 352 }
 353
 354
 355 //____________________________________________________________
 356
 357 void AliT0Reconstructor::FillESD(TTree */*digitsTree*/, TTree *clustersTree, AliESDEvent *pESD) const
 358 {
 359
 360   /***************************************************
 361   Resonstruct digits to vertex position
 362   ****************************************************/
 363
 364   AliDebug(1,Form("Start FillESD T0"));
 365
 366   TTree *treeR = clustersTree;
 367
 368    AliT0RecPoint* frecpoints= new AliT0RecPoint ();
 369     if (!frecpoints) {
 370     AliError("Reconstruct Fill ESD >> no recpoints found");
 371     return;
 372   }
 373
 374   AliDebug(1,Form("Start FillESD T0"));
 375   TBranch *brRec = treeR->GetBranch("T0");
 376   if (brRec) {
 377     brRec->SetAddress(&frecpoints);
 378   }else{
 379     AliError(Form("EXEC Branch T0 rec not found"));
 380     return;
 381   }
 382
 383     brRec->GetEntry(0);
 384     Float_t amp[24], time[24];
 385     Float_t  zPosition = frecpoints -> GetVertex();
 386     Float_t timeStart = frecpoints -> GetMeanTime() ;
 387     Float_t timeClock = frecpoints -> GetT0clock() ;
 388      for ( Int_t i=0; i<24; i++) {
 389       time[i] = Float_t (frecpoints -> GetTime(i)); // ps to ns
 390       amp[i] = frecpoints -> GetAmp(i);
 391     }
 392     pESD->SetT0zVertex(zPosition); //vertex Z position
 393     pESD->SetT0(timeStart);        // interaction time
 394     pESD->SetT0clock(timeClock);   // interaction time with ref.point(spectrum)
 395     pESD->SetT0time(time);         // best TOF on each PMT
 396     pESD->SetT0amplitude(amp);     // number of particles(MIPs) on each PMT
 397
 398     AliDebug(1,Form(" Z position %f cm,  T0  %f ps",zPosition , timeStart));
 399
 400 } // vertex in 3 sigma
 401
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