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   Int_t refPoint = GetRecoParam()->GetRefPoint();
 113
 114   TArrayI * timeCFD = new TArrayI(24);
 115   TArrayI * timeLED = new TArrayI(24);
 116   TArrayI * chargeQT0 = new TArrayI(24);
 117   TArrayI * chargeQT1 = new TArrayI(24);
 118
 119
 120   Float_t channelWidth = fParam->GetChannelWidth() ;
 121   Float_t meanVertex = fParam->GetMeanVertex();
 122
 123   AliDebug(1,Form("Start DIGITS reconstruction "));
 124
 125
 126   TBranch *brDigits=digitsTree->GetBranch("T0");
 127   AliT0digit *fDigits = new AliT0digit() ;
 128   if (brDigits) {
 129     brDigits->SetAddress(&fDigits);
 130   }else{
 131     AliError(Form("EXEC Branch T0 digits not found"));
 132      return;
 133   }
 134
 135   digitsTree->GetEvent(0);
 136   digitsTree->GetEntry(0);
 137   brDigits->GetEntry(0);
 138   fDigits->GetTimeCFD(*timeCFD);
 139   fDigits->GetTimeLED(*timeLED);
 140   fDigits->GetQT0(*chargeQT0);
 141   fDigits->GetQT1(*chargeQT1);
 142   Int_t onlineMean =  fDigits->MeanTime();
 143
 144
 145   Float_t besttimeA=999999;
 146   Float_t besttimeC=999999;
 147   Int_t pmtBestA=99999;
 148   Int_t pmtBestC=99999;
 149   Float_t timeDiff=999999, meanTime=0;
 150
 151   AliT0RecPoint* frecpoints= new AliT0RecPoint ();
 152   clustersTree->Branch( "T0", "AliT0RecPoint" ,&frecpoints, 405,1);
 153
 154   Float_t time[24], adc[24];
 155   for (Int_t ipmt=0; ipmt<24; ipmt++) {
 156     if(timeCFD->At(ipmt)>0 ){
 157      if(( chargeQT1->At(ipmt) - chargeQT0->At(ipmt))>0)
 158         adc[ipmt] = chargeQT1->At(ipmt) - chargeQT0->At(ipmt);
 159       else
 160         adc[ipmt] = 0;
 161
 162       time[ipmt] = fCalib-> WalkCorrection(refAmp, ipmt, adc[ipmt],  timeCFD->At(ipmt)) ;
 163
 164       Double_t sl = Double_t(timeLED->At(ipmt) - timeCFD->At(ipmt));
 165       //    time[ipmt] = fCalib-> WalkCorrection( ipmt, Int_t(sl), timeCFD[ipmt],"cosmic" ) ;
 166       AliDebug(10,Form(" ipmt %i QTC %i , time in chann %i (led-cfd) %i ",
 167                        ipmt, Int_t(adc[ipmt]) ,Int_t(time[ipmt]),Int_t( sl)));
 168       Double_t ampMip =((TGraph*)fAmpLED.At(ipmt))->Eval(sl);
 169       Double_t qtMip = ((TGraph*)fQTC.At(ipmt))->Eval(adc[ipmt]);
 170       AliDebug(10,Form("  Amlitude in MIPS LED %f ,  QTC %f in channels %i\n ",ampMip,qtMip, adc[ipmt]));
 171
 172       frecpoints->SetTime(ipmt, Float_t(time[ipmt]) );
 173       frecpoints->SetAmp(ipmt, Float_t( ampMip)); //for cosmic &pp beam
 174       frecpoints->SetAmpLED(ipmt, Float_t(qtMip));
 175
 176     }
 177     else {
 178       time[ipmt] = 0;
 179       adc[ipmt] = 0;
 180     }
 181   }
 182
 183   for (Int_t ipmt=0; ipmt<12; ipmt++){
 184     if(time[ipmt] > 1 ) {
 185       if(time[ipmt]<besttimeC){
 186         besttimeC=time[ipmt]; //timeC
 187         pmtBestC=ipmt;
 188       }
 189     }
 190   }
 191   for ( Int_t ipmt=12; ipmt<24; ipmt++){
 192     if(time[ipmt] > 1) {
 193       if(time[ipmt]<besttimeA) {
 194         besttimeA=time[ipmt]; //timeA
 195         pmtBestA=ipmt;}
 196     }
 197   }
 198   if(besttimeA !=999999)  frecpoints->SetTimeBestA(Int_t(besttimeA));
 199   if( besttimeC != 999999 ) frecpoints->SetTimeBestC(Int_t(besttimeC));
 200   AliDebug(10,Form(" besttimeA %f ch,  besttimeC %f ch",besttimeA, besttimeC));
 201   Float_t c = 0.0299792; // cm/ps
 202   Float_t vertex = 0;
 203   if(besttimeA !=999999 && besttimeC != 999999 ){
 204     //    timeDiff = (besttimeC - besttimeA)*channelWidth;
 205     timeDiff = (besttimeA - besttimeC)*channelWidth;
 206     meanTime = Float_t((besttimeA + besttimeC)/2);// * channelWidth);
 207     //    meanTime = (meanT0 - (besttimeA + besttimeC)/2) * channelWidth;
 208     vertex = meanVertex - c*(timeDiff)/2.;// + (fdZonA - fdZonC)/2;
 209     frecpoints->SetVertex(vertex);
 210     frecpoints->SetMeanTime(Int_t(meanTime));
 211     //online mean
 212     frecpoints->SetOnlineMean(Int_t(onlineMean));
 213     AliDebug(10,Form("  timeDiff %f #channel,  meanTime %f #channel, vertex %f cm online mean %i ps",timeDiff, meanTime,vertex, Int_t(onlineMean)));
 214
 215   }
 216
 217   clustersTree->Fill();
 218
 219   delete timeCFD;
 220   delete timeLED;
 221   delete chargeQT0;
 222   delete chargeQT1;
 223 }
 224
 225
 226 //_______________________________________________________________________
 227
 228 void AliT0Reconstructor::Reconstruct(AliRawReader* rawReader, TTree*recTree) const
 229 {
 230   // T0 raw ->
 231   //
 232   // reference amplitude and time ref. point from reco param
 233
 234  Int_t refAmp = GetRecoParam()->GetRefAmp();
 235  Int_t refPoint = GetRecoParam()->GetRefPoint();
 236
 237
 238   Int_t allData[110][5];
 239
 240   Int_t timeCFD[24], timeLED[24], chargeQT0[24], chargeQT1[24];
 241
 242   for (Int_t i0=0; i0<105; i0++)
 243     {
 244       for (Int_t j0=0; j0<5; j0++) allData[i0][j0]=0;
 245     }
 246
 247   Float_t besttimeA=9999999;
 248   Float_t besttimeC=9999999;
 249   Int_t pmtBestA=99999;
 250   Int_t pmtBestC=99999;
 251   Float_t timeDiff=9999999, meanTime=0;
 252   Float_t meanVertex = fParam->GetMeanVertex();
 253
 254   AliT0RecPoint* frecpoints= new AliT0RecPoint ();
 255
 256   recTree->Branch( "T0", "AliT0RecPoint" ,&frecpoints, 405,1);
 257
 258   AliDebug(10," before read data ");
 259   AliT0RawReader myrawreader(rawReader);
 260   if (!myrawreader.Next())
 261     AliDebug(1,Form(" no raw data found!!"));
 262   else
 263     {
 264       for (Int_t i=0; i<105; i++) {
 265         for (Int_t iHit=0; iHit<5; iHit++)
 266           {
 267             allData[i][iHit] = myrawreader.GetData(i,iHit);
 268           }
 269       }
 270
 271       Float_t channelWidth = fParam->GetChannelWidth() ;
 272
 273       //       Int_t meanT0 = fParam->GetMeanT0();
 274
 275
 276           for (Int_t in=0; in<12; in++)
 277             {
 278               timeCFD[in] = allData[in+1][0] ;
 279               timeCFD[in+12] = allData[in+56+1][0] ;
 280               timeLED[in] = allData[in+12+1][0] ;
 281               timeLED[in+12] = allData[in+68+1][0] ;
 282               AliDebug(10, Form(" readed i %i cfdC %i cfdA %i ledC %i ledA%i ",
 283                                 in, timeCFD[in],timeCFD[in+12],timeLED[in],
 284                                 timeLED[in+12]));
 285             }
 286
 287           for (Int_t in=0; in<12;  in++)
 288             {
 289               chargeQT0[in]=allData[2*in+25][0];
 290               chargeQT1[in]=allData[2*in+26][0];
 291             }
 292
 293            for (Int_t in=12; in<24;  in++)
 294              {
 295                chargeQT0[in]=allData[2*in+57][0];
 296                chargeQT1[in]=allData[2*in+58][0];
 297              }
 298
 299            //    } //cosmic with physics event
 300        for (Int_t in=0; in<24; in++)
 301          AliDebug(10, Form(" readed Raw %i %i %i %i %i",
 302                            in, timeLED[in],timeCFD[in],chargeQT0[in],chargeQT1[in]));
 303        Int_t onlineMean = allData[49][0];
 304
 305        Float_t time[24], adc[24];
 306        for (Int_t ipmt=0; ipmt<24; ipmt++) {
 307          if(timeCFD[ipmt]>0 && timeLED[ipmt]>0){
 308            //for simulated data
 309              //for physics  data
 310            if(( chargeQT1[ipmt] - chargeQT0[ipmt])>0)
 311              adc[ipmt] = chargeQT1[ipmt] - chargeQT0[ipmt];
 312            else
 313              adc[ipmt] = 0;
 314
 315
 316            time[ipmt] = fCalib-> WalkCorrection(refAmp, ipmt, adc[ipmt], timeCFD[ipmt] ) ;
 317
 318            Double_t sl = timeLED[ipmt] - timeCFD[ipmt];
 319              //    time[ipmt] = fCalib-> WalkCorrection( ipmt, Int_t(sl), timeCFD[ipmt] ) ;
 320            AliDebug(10,Form(" ipmt %i QTC %i , time in chann %i (led-cfd) %i ",
 321                             ipmt, Int_t(adc[ipmt]) ,Int_t(time[ipmt]),Int_t( sl)));
 322            Double_t ampMip =( (TGraph*)fAmpLED.At(ipmt))->Eval(sl);
 323            Double_t qtMip = ((TGraph*)fQTC.At(ipmt))->Eval(adc[ipmt]);
 324            AliDebug(10,Form("  Amlitude in MIPS LED %f ; QTC %f;  in channels %i\n ",ampMip,qtMip, adc[ipmt]));
 325
 326            frecpoints->SetTime(ipmt, Float_t(time[ipmt]) );
 327            frecpoints->SetAmp(ipmt, Float_t( ampMip)); //for cosmic &pp beam
 328            frecpoints->SetAmpLED(ipmt, Float_t(qtMip));
 329
 330          }
 331          else {
 332            time[ipmt] = 0;
 333            adc[ipmt] = 0;
 334          }
 335        }
 336
 337        for (Int_t ipmt=0; ipmt<12; ipmt++){
 338          if(time[ipmt] > 1 ) {
 339            if(time[ipmt]<besttimeC){
 340              besttimeC=time[ipmt]; //timeC
 341              pmtBestC=ipmt;
 342            }
 343          }
 344        }
 345        for ( Int_t ipmt=12; ipmt<24; ipmt++){
 346          if(time[ipmt] > 1) {
 347            if(time[ipmt]<besttimeA) {
 348              besttimeA=time[ipmt]; //timeA
 349              pmtBestA=ipmt;}
 350          }
 351        }
 352        if(besttimeA !=9999999)  frecpoints->SetTimeBestA(Int_t(besttimeA));
 353        if( besttimeC != 9999999 ) frecpoints->SetTimeBestC(Int_t(besttimeC));
 354        AliDebug(5,Form(" pmtA %i besttimeA %f ps, pmtC %i besttimeC %f #channel",
 355                        pmtBestA,besttimeA, pmtBestC,  besttimeC));
 356        Float_t c = 0.0299792458; // cm/ps
 357        Float_t vertex = 99999;
 358        if(besttimeA <9999999 && besttimeC < 9999999 ){
 359          timeDiff = ( besttimeA - besttimeC) *channelWidth;
 360          meanTime =  Float_t((besttimeA + besttimeC)/2.);
 361          onlineMean = onlineMean ;
 362          vertex =  meanVertex - c*(timeDiff)/2.; //+ (fdZonA - fdZonC)/2;
 363          frecpoints->SetVertex(vertex);
 364          frecpoints->SetMeanTime(Int_t(meanTime));
 365          frecpoints->SetOnlineMean(Int_t(onlineMean));
 366          AliDebug(5,Form("  timeDiff %f #channel,  meanTime %f #channel, vertex %f cm meanVertex %f online mean %i ",timeDiff, meanTime,vertex,meanVertex, onlineMean));
 367
 368        }
 369     } // if (else )raw data
 370          recTree->Fill();
 371          if(frecpoints) delete frecpoints;
 372 }
 373
 374
 375 //____________________________________________________________
 376
 377 void AliT0Reconstructor::FillESD(TTree */*digitsTree*/, TTree *clustersTree, AliESDEvent *pESD) const
 378 {
 379
 380   /***************************************************
 381   Resonstruct digits to vertex position
 382   ****************************************************/
 383
 384   AliDebug(1,Form("Start FillESD T0"));
 385
 386   TTree *treeR = clustersTree;
 387
 388    AliT0RecPoint* frecpoints= new AliT0RecPoint ();
 389     if (!frecpoints) {
 390     AliError("Reconstruct Fill ESD >> no recpoints found");
 391     return;
 392   }
 393
 394   AliDebug(1,Form("Start FillESD T0"));
 395   TBranch *brRec = treeR->GetBranch("T0");
 396   if (brRec) {
 397     brRec->SetAddress(&frecpoints);
 398   }else{
 399     AliError(Form("EXEC Branch T0 rec not found"));
 400     return;
 401   }
 402
 403     brRec->GetEntry(0);
 404     Float_t amp[24], time[24];
 405     Float_t  zPosition = frecpoints -> GetVertex();
 406     Float_t timeStart = frecpoints -> GetMeanTime() ;
 407     for ( Int_t i=0; i<24; i++) {
 408       time[i] = Float_t (frecpoints -> GetTime(i)); // ps to ns
 409       amp[i] = frecpoints -> GetAmp(i);
 410     }
 411     pESD->SetT0zVertex(zPosition); //vertex Z position
 412     pESD->SetT0(timeStart);        // interaction time
 413     pESD->SetT0time(time);         // best TOF on each PMT
 414     pESD->SetT0amplitude(amp);     // number of particles(MIPs) on each PMT
 415
 416     AliDebug(1,Form(" Z position %f cm,  T0  %f ps",zPosition , timeStart));
 417
 418 } // vertex in 3 sigma
 419
 420
 421
 422
 423
 424