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
  70   fCalib = new AliT0Calibrator();
  71
  72 }
  73
  74 //_____________________________________________________________________________
  75 void AliT0Reconstructor::Reconstruct(TTree*digitsTree, TTree*clustersTree) const
  76
  77 {
  78   // T0 digits reconstruction
  79   Int_t refAmp = GetRecoParam()->GetRefAmp();
  80
  81   TArrayI * timeCFD = new TArrayI(24);
  82   TArrayI * timeLED = new TArrayI(24);
  83   TArrayI * chargeQT0 = new TArrayI(24);
  84   TArrayI * chargeQT1 = new TArrayI(24);
  85
  86
  87   Float_t channelWidth = fParam->GetChannelWidth() ;
  88   Float_t meanVertex = fParam->GetMeanVertex();
  89   Float_t c = 0.0299792; // cm/ps
  90   Double32_t vertex = 9999999;
  91   Double32_t timeDiff=999999, meanTime=999999, timeclock=999999;
  92
  93
  94   AliDebug(1,Form("Start DIGITS reconstruction "));
  95
  96
  97   TBranch *brDigits=digitsTree->GetBranch("T0");
  98   AliT0digit *fDigits = new AliT0digit() ;
  99   if (brDigits) {
 100     brDigits->SetAddress(&fDigits);
 101   }else{
 102     AliError(Form("EXEC Branch T0 digits not found"));
 103      return;
 104   }
 105
 106   digitsTree->GetEvent(0);
 107   digitsTree->GetEntry(0);
 108   brDigits->GetEntry(0);
 109   fDigits->GetTimeCFD(*timeCFD);
 110   fDigits->GetTimeLED(*timeLED);
 111   fDigits->GetQT0(*chargeQT0);
 112   fDigits->GetQT1(*chargeQT1);
 113   Int_t onlineMean =  fDigits->MeanTime();
 114
 115   Bool_t tr[5];
 116   for (Int_t i=0; i<5; i++) tr[i]=false;
 117
 118   Double32_t besttimeA=999999;
 119   Double32_t besttimeC=999999;
 120   Int_t pmtBestA=99999;
 121   Int_t pmtBestC=99999;
 122
 123   AliT0RecPoint* frecpoints= new AliT0RecPoint ();
 124   clustersTree->Branch( "T0", "AliT0RecPoint" ,&frecpoints, 405,1);
 125
 126   Float_t time[24], adc[24];
 127   for (Int_t ipmt=0; ipmt<24; ipmt++) {
 128     if(timeCFD->At(ipmt)>0 ){
 129      if(( chargeQT1->At(ipmt) - chargeQT0->At(ipmt))>0)
 130         adc[ipmt] = chargeQT1->At(ipmt) - chargeQT0->At(ipmt);
 131       else
 132         adc[ipmt] = 0;
 133
 134      // time[ipmt] = fCalib-> WalkCorrection(refAmp, ipmt, adc[ipmt],  timeCFD->At(ipmt)) ;
 135
 136       Double_t sl = Double_t(timeLED->At(ipmt) - timeCFD->At(ipmt));
 137       time[ipmt] = fCalib-> WalkCorrection( refAmp,ipmt, Int_t(sl),  timeCFD->At(ipmt) ) ;
 138       AliDebug(10,Form(" ipmt %i QTC %i , time in chann %i (led-cfd) %i ",
 139                        ipmt, Int_t(adc[ipmt]) ,Int_t(time[ipmt]),Int_t( sl)));
 140
 141       Double_t ampMip =((TGraph*)fAmpLED.At(ipmt))->Eval(sl);
 142       Double_t qtMip = ((TGraph*)fQTC.At(ipmt))->Eval(adc[ipmt]);
 143       AliDebug(10,Form("  Amlitude in MIPS LED %f ,  QTC %f in channels %i\n ",ampMip,qtMip, adc[ipmt]));
 144
 145       frecpoints->SetTime(ipmt, Float_t(time[ipmt]) );
 146       frecpoints->SetAmp(ipmt, Float_t( ampMip)); //for cosmic &pp beam
 147       frecpoints->SetAmpLED(ipmt, Float_t(qtMip));
 148
 149     }
 150     else {
 151       time[ipmt] = 0;
 152       adc[ipmt] = 0;
 153     }
 154   }
 155
 156   for (Int_t ipmt=0; ipmt<12; ipmt++){
 157     if(time[ipmt] > 1 ) {
 158       if(time[ipmt]<besttimeC){
 159         besttimeC=time[ipmt]; //timeC
 160         pmtBestC=ipmt;
 161       }
 162     }
 163   }
 164   for ( Int_t ipmt=12; ipmt<24; ipmt++){
 165     if(time[ipmt] > 1) {
 166       if(time[ipmt]<besttimeA) {
 167         besttimeA=time[ipmt]; //timeA
 168         pmtBestA=ipmt;}
 169     }
 170   }
 171   if(besttimeA < 999999) {
 172     frecpoints->SetTimeBestA(Int_t(besttimeA *channelWidth));
 173     tr[1]=true;
 174   }
 175   if( besttimeC < 999999 ) {
 176     frecpoints->SetTimeBestC(Int_t(besttimeC *channelWidth));
 177     tr[2]=true;
 178   }
 179   AliDebug(10,Form(" besttimeA %f ch,  besttimeC %f ch",besttimeA, besttimeC));
 180   if(besttimeA <999999 && besttimeC < 999999 ){
 181     //    timeDiff = (besttimeC - besttimeA)*channelWidth;
 182     timeDiff = (besttimeA - besttimeC)*channelWidth;
 183     meanTime = (besttimeA + besttimeC)/2;// * channelWidth);
 184     timeclock = meanTime *channelWidth ;
 185     vertex = meanVertex - c*(timeDiff)/2.;// + (fdZonA - fdZonC)/2;
 186     tr[0]=true;
 187   }
 188   frecpoints->SetVertex(vertex);
 189   frecpoints->SetMeanTime(meanTime);
 190   frecpoints->SetT0clock(timeclock);
 191   frecpoints->SetT0Trig(tr);
 192
 193   for (Int_t i=0; i<5; i++) {
 194     printf(" T0 trigers %i ",tr[i]);
 195   }
 196     printf(" \n ");
 197
 198   //online mean
 199   frecpoints->SetOnlineMean(Int_t(onlineMean));
 200   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));
 201
 202
 203
 204
 205
 206   clustersTree->Fill();
 207
 208   delete timeCFD;
 209   delete timeLED;
 210   delete chargeQT0;
 211   delete chargeQT1;
 212 }
 213
 214
 215 //_______________________________________________________________________
 216
 217 void AliT0Reconstructor::Reconstruct(AliRawReader* rawReader, TTree*recTree) const
 218 {
 219   // T0 raw ->
 220   //
 221   // reference amplitude and time ref. point from reco param
 222
 223   Int_t refAmp = GetRecoParam()->GetRefAmp();
 224   Int_t refPoint = GetRecoParam()->GetRefPoint();
 225   Float_t latencyL1 = GetRecoParam()->GetLatencyL1();
 226   Float_t latencyHPTDC = GetRecoParam()->GetLatencyHPTDC();
 227   Float_t vertexshift = GetRecoParam()->GetVertexShift();
 228
 229   Int_t allData[110][5];
 230
 231   Int_t timeCFD[24], timeLED[24], chargeQT0[24], chargeQT1[24];
 232   Double32_t timeDiff=999999, meanTime=999999, timeclock=999999;
 233   Float_t c = 29.9792458; // cm/ns
 234   Double32_t vertex = 9999999;
 235   Int_t onlineMean=0;
 236
 237   for (Int_t i0=0; i0<105; i0++)
 238     {
 239       for (Int_t j0=0; j0<5; j0++) allData[i0][j0]=0;
 240     }
 241
 242   Double32_t besttimeA=9999999;
 243   Double32_t besttimeC=9999999;
 244   Int_t pmtBestA=99999;
 245   Int_t pmtBestC=99999;
 246   Float_t meanVertex = fParam->GetMeanVertex();
 247
 248   AliT0RecPoint* frecpoints= new AliT0RecPoint ();
 249
 250   recTree->Branch( "T0", "AliT0RecPoint" ,&frecpoints, 405,1);
 251
 252   AliDebug(10," before read data ");
 253   AliT0RawReader myrawreader(rawReader);
 254
 255   UInt_t type =rawReader->GetType();
 256
 257   if (!myrawreader.Next())
 258     AliDebug(1,Form(" no raw data found!!"));
 259   else
 260     {
 261       if(type == 7) {  //only physics
 262       for (Int_t i=0; i<105; i++) {
 263         for (Int_t iHit=0; iHit<5; iHit++)
 264           {
 265             allData[i][iHit] = myrawreader.GetData(i,iHit);
 266           }
 267       }
 268       Int_t ref=0;
 269       if (refPoint>0)
 270       ref = allData[refPoint][0]-5000;
 271
 272       Float_t channelWidth = fParam->GetChannelWidth() ;
 273
 274       //       Int_t meanT0 = fParam->GetMeanT0();
 275
 276
 277           for (Int_t in=0; in<12; in++)
 278             {
 279               timeCFD[in] = allData[in+1][0] ;
 280               timeCFD[in+12] = allData[in+56+1][0] ;
 281               timeLED[in] = allData[in+12+1][0] ;
 282               timeLED[in+12] = allData[in+68+1][0] ;
 283               AliDebug(10, Form(" readed i %i cfdC %i cfdA %i ledC %i ledA%i ",
 284                                 in, timeCFD[in],timeCFD[in+12],timeLED[in],
 285                                 timeLED[in+12]));
 286             }
 287
 288           for (Int_t in=0; in<12;  in++)
 289             {
 290               chargeQT0[in]=allData[2*in+25][0];
 291               chargeQT1[in]=allData[2*in+26][0];
 292             }
 293
 294            for (Int_t in=12; in<24;  in++)
 295              {
 296                chargeQT0[in]=allData[2*in+57][0];
 297                chargeQT1[in]=allData[2*in+58][0];
 298              }
 299
 300            //    } //cosmic with physics event
 301        for (Int_t in=0; in<24; in++)
 302          AliDebug(10, Form(" readed Raw %i %i %i %i %i",
 303                            in, timeLED[in],timeCFD[in],chargeQT0[in],chargeQT1[in]));
 304         onlineMean = allData[49][0];
 305
 306        Double32_t time[24], adc[24];
 307        for (Int_t ipmt=0; ipmt<24; ipmt++) {
 308          if(timeCFD[ipmt]>0 && timeLED[ipmt]>0){
 309            //for simulated data
 310              //for physics  data
 311            if(( chargeQT1[ipmt] - chargeQT0[ipmt])>0)
 312              adc[ipmt] = chargeQT0[ipmt] - chargeQT1[ipmt];
 313            else
 314              adc[ipmt] = 0;
 315
 316
 317            //      time[ipmt] = fCalib-> WalkCorrection(refAmp, ipmt, adc[ipmt], timeCFD[ipmt] ) ;
 318
 319            Double_t sl = timeLED[ipmt] - timeCFD[ipmt];
 320            time[ipmt] = fCalib-> WalkCorrection( refAmp,ipmt, Int_t(sl), timeCFD[ipmt] ) ;
 321            AliDebug(10,Form(" ipmt %i QTC %i , time in chann %i (led-cfd) %i ",
 322                             ipmt, Int_t(adc[ipmt]) ,Int_t(time[ipmt]),Int_t( sl)));
 323            Double_t ampMip =( (TGraph*)fAmpLED.At(ipmt))->Eval(sl);
 324            Double_t qtMip = ((TGraph*)fQTC.At(ipmt))->Eval(adc[ipmt]);
 325            AliDebug(10,Form("  Amlitude in MIPS LED %f ; QTC %f;  in channels %i\n ",ampMip,qtMip, adc[ipmt]));
 326
 327            //      frecpoints->SetTime(ipmt, Float_t(time[ipmt]) );
 328            frecpoints->SetTime(ipmt,Double32_t(timeCFD[ipmt]));
 329            frecpoints->SetAmpLED(ipmt, Double32_t( qtMip)); //for cosmic &pp beam
 330            frecpoints->SetAmp(ipmt, Double32_t(ampMip));
 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 < 999999)
 355          frecpoints->SetTimeBestA( 0.001 * besttimeA * channelWidth - latencyHPTDC + latencyL1);
 356        if( besttimeC < 999999 )
 357          frecpoints->SetTimeBestC(0.001 * besttimeC * channelWidth - latencyHPTDC + latencyL1);
 358        AliDebug(10,Form(" pmtA %i besttimeA %f ps, pmtC %i besttimeC %f ps",
 359                        pmtBestA,besttimeA, pmtBestC,  besttimeC));
 360         if(besttimeA <999999 && besttimeC < 999999 ){
 361          timeDiff = ( besttimeA - besttimeC) *0.001 * channelWidth;
 362          timeclock =  0.001 * channelWidth * Float_t(besttimeA+besttimeC)/2. - latencyHPTDC + latencyL1;
 363          meanTime = (besttimeA+besttimeC-2.*Float_t(ref))/2.;
 364          vertex =  meanVertex -  c*(timeDiff)/2. + vertexshift; //+ (fdZonA - fdZonC)/2;
 365         }
 366       }  //if phys event
 367       AliDebug(5,Form("  timeDiff %f #channel,  meanTime %f #channel, TOFmean%f  vertex %f cm meanVertex %f online mean %i \n",timeDiff, meanTime,timeclock, vertex,meanVertex, onlineMean));
 368       frecpoints->SetT0clock(timeclock);
 369       frecpoints->SetVertex(vertex);
 370       frecpoints->SetMeanTime(meanTime);
 371       frecpoints->SetOnlineMean(Int_t(onlineMean));
 372         // Set triggers
 373
 374       Bool_t tr[5];
 375       Int_t trchan[5]= {50,51,52,55,56};
 376       for (Int_t i=0; i<5; i++) tr[i]=false;
 377       for (Int_t itr=0; itr<5; itr++) {
 378         if(allData[trchan[itr]][0]>0) tr[itr]=true;
 379         frecpoints->SetT0Trig(tr);
 380       }
 381       for (Int_t i=0; i<5; i++)
 382         printf(" T0 trigers %i ",tr[i]);
 383       printf(" \n ");
 384
 385
 386       } // if (else )raw data
 387       recTree->Fill();
 388       if(frecpoints) delete frecpoints;
 389     }
 390
 391
 392   //____________________________________________________________
 393
 394   void AliT0Reconstructor::FillESD(TTree */*digitsTree*/, TTree *clustersTree, AliESDEvent *pESD) const
 395   {
 396
 397   /***************************************************
 398   Resonstruct digits to vertex position
 399   ****************************************************/
 400
 401   AliDebug(1,Form("Start FillESD T0"));
 402   Float_t channelWidth = 0.0244;
 403   Float_t c = 29.9792458; // cm/ns
 404   Float_t currentVertex=0, shift=0;
 405   Int_t ncont=0;
 406   const AliESDVertex* vertex = pESD->GetPrimaryVertex();
 407   if (!vertex)        vertex = pESD->GetPrimaryVertexSPD();
 408   if (!vertex)        vertex = pESD->GetPrimaryVertexTPC();
 409   if (!vertex)        vertex = pESD->GetVertex();
 410
 411   if (vertex) {
 412     AliDebug(2, Form("Got %s (%s) from ESD: %f",
 413                     vertex->GetName(), vertex->GetTitle(), vertex->GetZ()));
 414     currentVertex = vertex->GetZ();
 415
 416     ncont = vertex->GetNContributors();
 417     // cout<<" spdver "<<spdver<<" ncont "<<ncont<<endl;
 418     if(ncont>3 ) {
 419       //     hVertexSPD->Fill(spdver);
 420       shift = currentVertex/c;
 421       //          cout<<" vertex shif "<<shift<<" vertex "<<spdver<<" IsFromVertexer3D  "<<fverSPD->IsFromVertexer3D()<<endl;
 422     }
 423   }
 424   TTree *treeR = clustersTree;
 425
 426    AliT0RecPoint* frecpoints= new AliT0RecPoint ();
 427     if (!frecpoints) {
 428     AliError("Reconstruct Fill ESD >> no recpoints found");
 429     return;
 430   }
 431
 432   AliDebug(1,Form("Start FillESD T0"));
 433   TBranch *brRec = treeR->GetBranch("T0");
 434   if (brRec) {
 435     brRec->SetAddress(&frecpoints);
 436   }else{
 437     AliError(Form("EXEC Branch T0 rec not found"));
 438     return;
 439   }
 440
 441     brRec->GetEntry(0);
 442     Double32_t amp[24], time[24];
 443     Double32_t timeClock[3];
 444     Double32_t zPosition = frecpoints -> GetVertex();
 445     Double32_t timeStart = frecpoints -> GetMeanTime();
 446     timeClock[0] = frecpoints -> GetT0clock() ;
 447     timeClock[1] = frecpoints -> GetBestTimeA() + shift;
 448     timeClock[2] = frecpoints -> GetBestTimeC() - shift;
 449     for ( Int_t i=0; i<24; i++) {
 450       time[i] =  frecpoints -> GetTime(i); // ps to ns
 451       amp[i] = frecpoints -> GetAmp(i);
 452     }
 453     Int_t trig= frecpoints ->GetT0Trig();
 454     pESD->SetT0Trig(trig);
 455
 456     pESD->SetT0zVertex(zPosition); //vertex Z position
 457     pESD->SetT0(timeStart);        // interaction time
 458     for(Int_t i=0; i<3; i++)
 459       pESD->SetT0TOF(i,timeClock[i]);   // interaction time (ns)
 460     pESD->SetT0time(time);         // best TOF on each PMT
 461     pESD->SetT0amplitude(amp);     // number of particles(MIPs) on each PMT
 462
 463     AliDebug(1,Form("T0: Vertex %f (T0A+T0C)/2 %f #channels T0signal %f ns OrA %f ns OrC %f T0trig %i\n",zPosition, timeStart, timeClock[0], timeClock[1], timeClock[2], trig));
 464
 465
 466 } // vertex in 3 sigma
 467
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