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 <iostream.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                                              fCalib()
  48 {
  49   //constructor
  50
  51  AliDebug(1,"Start reconstructor ");
  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 }
  60
  61   fdZonC = TMath::Abs(fParam->GetZPositionShift("T0/C/PMT1"));
  62   fdZonA = TMath::Abs(fParam->GetZPositionShift("T0/A/PMT15"));
  63   fCalib = new AliT0Calibrator();
  64
  65 }
  66 //____________________________________________________________________
  67
  68 AliT0Reconstructor::AliT0Reconstructor(const AliT0Reconstructor &r):
  69   AliReconstructor(r),
  70                                              fdZonA(0),
  71                                              fdZonC(0),
  72                                              fZposition(0),
  73                                              fParam(NULL),
  74                                              fAmpLEDrec(),
  75                                              fCalib()
  76
  77  {
  78   //
  79   // AliT0Reconstructor copy constructor
  80   //
  81
  82   ((AliT0Reconstructor &) r).Copy(*this);
  83
  84 }
  85
  86 //_____________________________________________________________________________
  87 AliT0Reconstructor &AliT0Reconstructor::operator=(const AliT0Reconstructor &r)
  88 {
  89   //
  90   // Assignment operator
  91   //
  92
  93   if (this != &r) ((AliT0Reconstructor &) r).Copy(*this);
  94   return *this;
  95
  96 }
  97
  98 //_____________________________________________________________________________
  99
 100 void AliT0Reconstructor::Reconstruct(TTree*digitsTree, TTree*clustersTree) const
 101
 102 {
 103   // T0 digits reconstruction
 104   // T0RecPoint writing
 105
 106
 107   TArrayI * timeCFD = new TArrayI(24);
 108   TArrayI * timeLED = new TArrayI(24);
 109   TArrayI * chargeQT0 = new TArrayI(24);
 110   TArrayI * chargeQT1 = new TArrayI(24);
 111
 112
 113   //  Int_t mV2Mip = param->GetmV2Mip();
 114   //mV2Mip = param->GetmV2Mip();
 115   Float_t channelWidth = fParam->GetChannelWidth() ;
 116   //  Int_t meanT0 = fParam->GetMeanT0();
 117
 118   AliDebug(1,Form("Start DIGITS reconstruction "));
 119
 120
 121  TBranch *brDigits=digitsTree->GetBranch("T0");
 122   AliT0digit *fDigits = new AliT0digit() ;
 123   if (brDigits) {
 124     brDigits->SetAddress(&fDigits);
 125   }else{
 126     AliError(Form("EXEC Branch T0 digits not found"));
 127      return;
 128   }
 129
 130   digitsTree->GetEvent(0);
 131   digitsTree->GetEntry(0);
 132   brDigits->GetEntry(0);
 133   fDigits->GetTimeCFD(*timeCFD);
 134   fDigits->GetTimeLED(*timeLED);
 135   fDigits->GetQT0(*chargeQT0);
 136   fDigits->GetQT1(*chargeQT1);
 137   Int_t onlineMean =  fDigits->MeanTime();
 138   cout<<" !!!! onlineMean "<<onlineMean<<endl;
 139
 140   Float_t besttimeA=999999;
 141   Float_t besttimeC=999999;
 142   Int_t pmtBestA=99999;
 143   Int_t pmtBestC=99999;
 144   Float_t timeDiff=999999, meanTime=0;
 145
 146
 147   AliT0RecPoint* frecpoints= new AliT0RecPoint ();
 148   clustersTree->Branch( "T0", "AliT0RecPoint" ,&frecpoints, 405,1);
 149
 150  Float_t time[24], adc[24];
 151   for (Int_t ipmt=0; ipmt<24; ipmt++) {
 152     if(timeCFD->At(ipmt)>0 ){
 153       Double_t qt0 = Double_t(chargeQT0->At(ipmt));
 154       Double_t qt1 = Double_t(chargeQT1->At(ipmt));
 155       if((qt1-qt0)>0)  adc[ipmt] = Int_t (TMath::Exp( Double_t (channelWidth*(qt1-qt0)/1000)));
 156
 157       time[ipmt] = fCalib-> WalkCorrection( ipmt, Int_t(qt1) , timeCFD->At(ipmt), "pdc" ) ;
 158
 159       //LED
 160       Double_t sl = (timeLED->At(ipmt) - time[ipmt])*channelWidth;
 161       Double_t qt=((TGraph*)fAmpLEDrec.At(ipmt))->Eval(sl/1000.);
 162       AliDebug(1,Form(" ipmt %i QTC %i , time in chann %i (led-cfd) %i ",
 163                        ipmt, Int_t(adc[ipmt]) ,Int_t(time[ipmt]),Int_t( sl)));
 164       frecpoints->SetTime(ipmt,Int_t(time[ipmt]));
 165       frecpoints->SetAmp(ipmt,Int_t (adc[ipmt]));
 166       frecpoints->SetAmpLED(ipmt,qt);
 167     }
 168     else {
 169       time[ipmt] = 0;
 170       adc[ipmt] = 0;
 171     }
 172   }
 173
 174   for (Int_t ipmt=0; ipmt<12; ipmt++){
 175     if(time[ipmt] > 1 ) {
 176       if(time[ipmt]<besttimeC){
 177         besttimeC=time[ipmt]; //timeC
 178         pmtBestC=ipmt;
 179       }
 180     }
 181   }
 182   for ( Int_t ipmt=12; ipmt<24; ipmt++){
 183     if(time[ipmt] > 1) {
 184       if(time[ipmt]<besttimeA) {
 185         besttimeA=time[ipmt]; //timeA
 186         pmtBestA=ipmt;}
 187     }
 188   }
 189   if(besttimeA !=999999)  frecpoints->SetTimeBestA(Int_t(besttimeA));
 190   if( besttimeC != 999999 ) frecpoints->SetTimeBestC(Int_t(besttimeC));
 191   AliDebug(1,Form(" besttimeA %f ch,  besttimeC %f ch",besttimeA, besttimeC));
 192   Float_t c = 0.0299792; // cm/ps
 193   Float_t vertex = 0;
 194   if(besttimeA !=999999 && besttimeC != 999999 ){
 195     timeDiff = (besttimeC - besttimeA)*channelWidth;
 196     meanTime = (Float_t((besttimeA + besttimeC -4000)/2) * channelWidth);
 197     //    meanTime = (meanT0 - (besttimeA + besttimeC)/2) * channelWidth;
 198     vertex = c*(timeDiff)/2. + (fdZonA - fdZonC)/2; //-(lenr-lenl))/2;
 199     frecpoints->SetVertex(vertex);
 200     frecpoints->SetMeanTime(Int_t(meanTime));
 201     //online mean
 202     frecpoints->SetOnlineMean(Int_t(onlineMean * channelWidth));
 203     AliDebug(1,Form("  timeDiff %f ps,  meanTime %f ps, vertex %f cm online mean %i ps",timeDiff, meanTime,vertex, Int_t(onlineMean * channelWidth )));
 204
 205   }
 206
 207   //time in each channel as time[ipmt]-MeanTimeinThisChannel(with vertex=0)
 208   /*
 209   for (Int_t ipmt=0; ipmt<24; ipmt++) {
 210     if(time[ipmt]>1) {
 211       //      time[ipmt] = (time[ipmt] - fTime0vertex[ipmt])*channelWidth;
 212       time[ipmt] =Int_t  ( Float_t(time[ipmt]) * channelWidth);
 213       frecpoints->SetTime(ipmt,time[ipmt]);
 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   // T0RecPoint writing
 232
 233   //Q->T-> coefficients !!!! should be measured!!!
 234   Int_t allData[110][5];
 235
 236   Int_t timeCFD[24], timeLED[24], chargeQT0[24], chargeQT1[24];
 237   TString option = GetOption();
 238    AliDebug(10,Form("Option: %s\n", option.Data()));
 239
 240    for (Int_t i0=0; i0<105; i0++)
 241      {
 242        for (Int_t j0=0; j0<5; j0++) allData[i0][j0]=0;
 243      }
 244
 245    Float_t besttimeA=9999999;
 246    Float_t besttimeC=9999999;
 247    Int_t pmtBestA=99999;
 248    Int_t pmtBestC=99999;
 249    Float_t timeDiff=9999999, meanTime=0;
 250    Double_t qt=0;
 251
 252    AliT0RecPoint* frecpoints= new AliT0RecPoint ();
 253
 254    recTree->Branch( "T0", "AliT0RecPoint" ,&frecpoints, 405,1);
 255
 256
 257    AliDebug(10," before read data ");
 258    AliT0RawReader myrawreader(rawReader);
 259    if (!myrawreader.Next())
 260      AliDebug(1,Form(" no raw data found!!"));
 261    else
 262      {
 263        for (Int_t i=0; i<105; i++) {
 264          for (Int_t iHit=0; iHit<5; iHit++)
 265            {
 266              allData[i][iHit] = myrawreader.GetData(i,iHit);
 267            }
 268        }
 269
 270        Float_t channelWidth = fParam->GetChannelWidth() ;
 271
 272        //       Int_t meanT0 = fParam->GetMeanT0();
 273        if(option == "pdc"){
 274          for (Int_t in=0; in<24; in++)
 275            {
 276
 277              timeLED[in] = allData[in+1][0] ;
 278              timeCFD[in] = allData[in+25][0] ;
 279              chargeQT1[in] = allData[in+57][0] ;
 280              chargeQT0[in] = allData[in+80][0] ;
 281            }
 282        }
 283
 284        if(option == "cosmic") {
 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            }
 292
 293          for (Int_t in=0; in<24;  in=in+2)
 294            {
 295              Int_t cc=in/2;
 296              chargeQT1[cc]=allData[in+25][0];
 297              chargeQT0[cc]=allData[in+26][0];
 298            }
 299          for (Int_t in=24; in<48;  in=in+2)
 300            {
 301              Int_t cc=in/2;
 302              chargeQT1[cc]=allData[in+57][0];
 303              chargeQT0[cc]=allData[in+58][0];
 304            }
 305
 306        }
 307        for (Int_t in=0; in<24; in++)
 308          AliDebug(10, Form(" readed Raw %i %i %i %i %i", in, timeLED[in],timeCFD[in],chargeQT0[in],chargeQT1[in]));
 309        Int_t onlineMean = allData[49][0];
 310
 311        Float_t time[24], adc[24];
 312        for (Int_t ipmt=0; ipmt<24; ipmt++) {
 313          if(timeCFD[ipmt]>0 && timeLED[ipmt]>0){
 314
 315            if(option == "pdc"){
 316              Double_t qt0 = Double_t(chargeQT0[ipmt]);
 317              Double_t qt1 = Double_t(chargeQT1[ipmt]);
 318              if((qt1-qt0)>0)  adc[ipmt] = Int_t(TMath::Exp( Double_t (channelWidth*(qt1-qt0)/1000.)));
 319              time[ipmt] = fCalib-> WalkCorrection( ipmt,Int_t(qt1) , timeCFD[ipmt], "pdc" ) ;
 320              Double_t sl = (timeLED[ipmt] - time[ipmt])*channelWidth;
 321              if(fAmpLEDrec.At(ipmt))
 322                qt=((TGraph*)fAmpLEDrec.At(ipmt))->Eval(sl/1000.);
 323              frecpoints->SetTime(ipmt,Int_t(time[ipmt]));
 324              frecpoints->SetAmp(ipmt,Int_t(adc[ipmt]));
 325              frecpoints->SetAmpLED(ipmt,qt);
 326              AliDebug(10,Form(" QTC %f mv,  time in chann %f ampLED %f",adc[ipmt] ,time[ipmt], qt));
 327            }
 328            if(option == "cosmic") {
 329              //      if(ipmt == 15) continue; //skip crashed PMT
 330              if(( chargeQT1[ipmt] - chargeQT0[ipmt])>0)
 331                adc[ipmt] = chargeQT1[ipmt] - chargeQT0[ipmt];
 332              else
 333                adc[ipmt] = 0;
 334              //      time[ipmt] = fCalib-> WalkCorrection( ipmt, adc[ipmt], timeCFD[ipmt],"cosmic" ) ;
 335              // time[ipmt] =  timeCFD[ipmt] ;
 336              Double_t sl = timeLED[ipmt] - timeCFD[ipmt];
 337              time[ipmt] = fCalib-> WalkCorrection( ipmt, Int_t(sl), timeCFD[ipmt],"cosmic" ) ;
 338              if(fAmpLEDrec.At(ipmt))
 339                qt=((TGraph*)fAmpLEDrec.At(ipmt))->Eval(sl);
 340              time[ipmt] = time[ipmt] - allData[0][0] + 5000;
 341              AliDebug(10,Form(" ipmt %i QTC %i , time in chann %i (led-cfd) %i ampLED %f",
 342                               ipmt, Int_t(adc[ipmt]) ,Int_t(time[ipmt]),Int_t( sl), qt));
 343              frecpoints->SetTime(ipmt, Float_t(time[ipmt]) );
 344              frecpoints->SetAmp(ipmt, Float_t(adc[ipmt]));
 345              frecpoints->SetAmpLED(ipmt, Float_t(qt));
 346            }
 347
 348          }
 349          else {
 350            time[ipmt] = 0;
 351            adc[ipmt] = 0;
 352          }
 353        }
 354
 355        for (Int_t ipmt=0; ipmt<12; ipmt++){
 356          if(time[ipmt] > 1 ) {
 357            if(time[ipmt]<besttimeC){
 358              besttimeC=time[ipmt]; //timeC
 359              pmtBestC=ipmt;
 360            }
 361          }
 362        }
 363        for ( Int_t ipmt=12; ipmt<24; ipmt++){
 364          if(time[ipmt] > 1) {
 365            if(time[ipmt]<besttimeA) {
 366              besttimeA=time[ipmt]; //timeA
 367              pmtBestA=ipmt;}
 368          }
 369        }
 370        if(besttimeA !=9999999)  frecpoints->SetTimeBestA(Int_t(besttimeA));
 371        if( besttimeC != 9999999 ) frecpoints->SetTimeBestC(Int_t(besttimeC));
 372        AliDebug(1,Form(" besttimeA %f ps,  besttimeC %f ps",besttimeA, besttimeC));
 373        Float_t c = 0.0299792; // cm/ps
 374        Float_t vertex = 99999;
 375        if(besttimeA <9999999 && besttimeC < 9999999 ){
 376          timeDiff = ( besttimeC - besttimeA) *channelWidth;
 377          if(option == "pdc"){
 378            //      meanTime = (besttimeA + besttimeC)/2 * channelWidth;
 379            meanTime = (besttimeA + besttimeC-4000.)/2 * channelWidth;
 380            onlineMean = Int_t (onlineMean * channelWidth);
 381          }
 382          if(option == "cosmic") {
 383            meanTime =  Float_t((besttimeA + besttimeC)/2);
 384            onlineMean = onlineMean -allData[0][0];;
 385          }
 386          vertex = c*(timeDiff)/2.+ (fdZonA - fdZonC)/2;
 387          frecpoints->SetVertex(vertex);
 388          frecpoints->SetMeanTime(Int_t(meanTime));
 389          AliDebug(1,Form("  timeDiff %f ps,  meanTime %f ps, vertex %f cm online mean %i ",timeDiff, meanTime,vertex, onlineMean));
 390
 391        }
 392      } // if (else )raw data
 393    recTree->Fill();
 394    if(frecpoints) delete frecpoints;
 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
 407   TTree *treeR = clustersTree;
 408
 409    AliT0RecPoint* frecpoints= new AliT0RecPoint ();
 410     if (!frecpoints) {
 411     AliError("Reconstruct Fill ESD >> no recpoints found");
 412     return;
 413   }
 414
 415   AliDebug(1,Form("Start FillESD T0"));
 416   TBranch *brRec = treeR->GetBranch("T0");
 417   if (brRec) {
 418     brRec->SetAddress(&frecpoints);
 419   }else{
 420     AliError(Form("EXEC Branch T0 rec not found"));
 421     return;
 422   }
 423
 424     brRec->GetEntry(0);
 425     Float_t amp[24], time[24];
 426     Float_t  zPosition = frecpoints -> GetVertex();
 427     Float_t timeStart = frecpoints -> GetMeanTime() ;
 428     for ( Int_t i=0; i<24; i++) {
 429       time[i] = Float_t (frecpoints -> GetTime(i)); // ps to ns
 430       amp[i] = frecpoints -> GetAmp(i);
 431     }
 432     pESD->SetT0zVertex(zPosition); //vertex Z position
 433     pESD->SetT0(timeStart);        // interaction time
 434     pESD->SetT0time(time);         // best TOF on each PMT
 435     pESD->SetT0amplitude(amp);     // number of particles(MIPs) on each PMT
 436
 437     AliDebug(1,Form(" Z position %f cm,  T0  %f ps",zPosition , timeStart));
 438
 439 } // vertex in 3 sigma
 440
 441
 442
 443
 444
 445