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 #include "AliESDfriend.h"
  34
  35 #include <TArrayI.h>
  36 #include <TGraph.h>
  37 #include <TMath.h>
  38 #include <Riostream.h>
  39
  40 ClassImp(AliT0Reconstructor)
  41
  42   AliT0Reconstructor:: AliT0Reconstructor(): AliReconstructor(),
  43                                              fdZonA(0),
  44                                              fdZonC(0),
  45                                              fZposition(0),
  46                                              fParam(NULL),
  47                                              fAmpLEDrec(),
  48                                              fQTC(0),
  49                                              fAmpLED(0),
  50                                              fCalib(),
  51                                              fLatencyHPTDC(9000),
  52                                              fLatencyL1(0),
  53                                              fLatencyL1A(0),
  54                                              fLatencyL1C(0)
  55
  56 {
  57   //constructor
  58
  59   fParam = AliT0Parameters::Instance();
  60   fParam->Init();
  61
  62   for (Int_t i=0; i<24; i++){
  63         TGraph* gr = fParam ->GetAmpLEDRec(i);
  64         if (gr) fAmpLEDrec.AddAtAndExpand(gr,i) ;
  65           TGraph* gr1 = fParam ->GetAmpLED(i);
  66           if (gr1) fAmpLED.AddAtAndExpand(gr1,i) ;
  67           TGraph* gr2 = fParam ->GetQTC(i);
  68           if (gr2) fQTC.AddAtAndExpand(gr2,i) ;
  69   }
  70
  71   fLatencyL1 = fParam->GetLatencyL1();
  72   fLatencyL1A = fParam->GetLatencyL1A();
  73   fLatencyL1C = fParam->GetLatencyL1C();
  74   fLatencyHPTDC = fParam->GetLatencyHPTDC();
  75   AliDebug(10,Form(" LatencyL1 %f latencyL1A %f latencyL1C %f latencyHPTDC %f \n",fLatencyL1, fLatencyL1A, fLatencyL1C, fLatencyHPTDC));
  76
  77   // fdZonC = TMath::Abs(fParam->GetZPositionShift("T0/C/PMT1"));
  78   //fdZonA = TMath::Abs(fParam->GetZPositionShift("T0/A/PMT15"));
  79
  80
  81   fCalib = new AliT0Calibrator();
  82
  83 }
  84
  85 //_____________________________________________________________________________
  86 void AliT0Reconstructor::Reconstruct(TTree*digitsTree, TTree*clustersTree) const
  87
  88 {
  89   // T0 digits reconstruction
  90   Int_t refAmp = GetRecoParam()->GetRefAmp();
  91
  92   TArrayI * timeCFD = new TArrayI(24);
  93   TArrayI * timeLED = new TArrayI(24);
  94   TArrayI * chargeQT0 = new TArrayI(24);
  95   TArrayI * chargeQT1 = new TArrayI(24);
  96
  97
  98   Float_t channelWidth = fParam->GetChannelWidth() ;
  99   Float_t meanVertex = fParam->GetMeanVertex();
 100   Float_t c = 0.0299792; // cm/ps
 101   Double32_t vertex = 9999999;
 102   Double32_t timeDiff=999999, meanTime=999999, timeclock=999999;
 103
 104
 105   AliDebug(1,Form("Start DIGITS reconstruction "));
 106
 107
 108   TBranch *brDigits=digitsTree->GetBranch("T0");
 109   AliT0digit *fDigits = new AliT0digit() ;
 110   if (brDigits) {
 111     brDigits->SetAddress(&fDigits);
 112   }else{
 113     AliError(Form("EXEC Branch T0 digits not found"));
 114      return;
 115   }
 116
 117   digitsTree->GetEvent(0);
 118   digitsTree->GetEntry(0);
 119   brDigits->GetEntry(0);
 120   fDigits->GetTimeCFD(*timeCFD);
 121   fDigits->GetTimeLED(*timeLED);
 122   fDigits->GetQT0(*chargeQT0);
 123   fDigits->GetQT1(*chargeQT1);
 124   Int_t onlineMean =  fDigits->MeanTime();
 125
 126   Bool_t tr[5];
 127   for (Int_t i=0; i<5; i++) tr[i]=false;
 128
 129   Double32_t besttimeA=999999;
 130   Double32_t besttimeC=999999;
 131   Int_t pmtBestA=99999;
 132   Int_t pmtBestC=99999;
 133
 134   AliT0RecPoint* frecpoints= new AliT0RecPoint ();
 135   clustersTree->Branch( "T0", "AliT0RecPoint" ,&frecpoints, 405,1);
 136
 137   Float_t time[24], adc[24];
 138   for (Int_t ipmt=0; ipmt<24; ipmt++) {
 139     if(timeCFD->At(ipmt)>0 ){
 140      if(( chargeQT1->At(ipmt) - chargeQT0->At(ipmt))>0)
 141         adc[ipmt] = chargeQT1->At(ipmt) - chargeQT0->At(ipmt);
 142       else
 143         adc[ipmt] = 0;
 144
 145      // time[ipmt] = fCalib-> WalkCorrection(refAmp, ipmt, adc[ipmt],  timeCFD->At(ipmt)) ;
 146
 147       Double_t sl = Double_t(timeLED->At(ipmt) - timeCFD->At(ipmt));
 148       time[ipmt] = fCalib-> WalkCorrection( refAmp,ipmt, Int_t(sl),  timeCFD->At(ipmt) ) ;
 149       AliDebug(10,Form(" ipmt %i QTC %i , time in chann %i (led-cfd) %i ",
 150                        ipmt, Int_t(adc[ipmt]) ,Int_t(time[ipmt]),Int_t( sl)));
 151
 152       Double_t ampMip =((TGraph*)fAmpLED.At(ipmt))->Eval(sl);
 153       Double_t qtMip = ((TGraph*)fQTC.At(ipmt))->Eval(adc[ipmt]);
 154       AliDebug(10,Form("  Amlitude in MIPS LED %f ,  QTC %f in channels %i\n ",ampMip,qtMip, adc[ipmt]));
 155
 156       frecpoints->SetTime(ipmt, Float_t(time[ipmt]) );
 157       frecpoints->SetAmp(ipmt, Float_t( ampMip)); //for cosmic &pp beam
 158       frecpoints->SetAmpLED(ipmt, Float_t(qtMip));
 159
 160     }
 161     else {
 162       time[ipmt] = 0;
 163       adc[ipmt] = 0;
 164     }
 165   }
 166
 167   for (Int_t ipmt=0; ipmt<12; ipmt++){
 168     if(time[ipmt] > 1 ) {
 169       if(time[ipmt]<besttimeC){
 170         besttimeC=time[ipmt]; //timeC
 171         pmtBestC=ipmt;
 172       }
 173     }
 174   }
 175   for ( Int_t ipmt=12; ipmt<24; ipmt++){
 176     if(time[ipmt] > 1) {
 177       if(time[ipmt]<besttimeA) {
 178         besttimeA=time[ipmt]; //timeA
 179         pmtBestA=ipmt;}
 180     }
 181   }
 182   if(besttimeA < 999999) {
 183     frecpoints->SetTimeBestA(Int_t(besttimeA *channelWidth));
 184     tr[1]=true;
 185   }
 186   if( besttimeC < 999999 ) {
 187     frecpoints->SetTimeBestC(Int_t(besttimeC *channelWidth));
 188     tr[2]=true;
 189   }
 190   AliDebug(10,Form(" besttimeA %f ch,  besttimeC %f ch",besttimeA, besttimeC));
 191   if(besttimeA <999999 && besttimeC < 999999 ){
 192     //    timeDiff = (besttimeC - besttimeA)*channelWidth;
 193     timeDiff = (besttimeA - besttimeC)*channelWidth;
 194     meanTime = (besttimeA + besttimeC)/2;// * channelWidth);
 195     timeclock = meanTime *channelWidth ;
 196     vertex = meanVertex - c*(timeDiff)/2.;// + (fdZonA - fdZonC)/2;
 197     tr[0]=true;
 198   }
 199   frecpoints->SetVertex(vertex);
 200   frecpoints->SetMeanTime(meanTime);
 201   frecpoints->SetT0clock(timeclock);
 202   frecpoints->SetT0Trig(tr);
 203
 204   for (Int_t i=0; i<5; i++) {
 205     printf(" T0 trigers %i ",tr[i]);
 206   }
 207     printf(" \n ");
 208
 209   //online mean
 210   frecpoints->SetOnlineMean(Int_t(onlineMean));
 211   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));
 212
 213
 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   Int_t allData[110][5];
 238
 239   Int_t timeCFD[24], timeLED[24], chargeQT0[24], chargeQT1[24];
 240   Double32_t timeDiff=999999, meanTime=999999, timeclock=999999;
 241   Float_t c = 29.9792458; // cm/ns
 242   Double32_t vertex = 9999999;
 243   Int_t onlineMean=0;
 244   // Float_t meanVertex = fParam->GetMeanVertex();
 245   Float_t meanVertex = 0;
 246
 247   cout<<" @@@@ Latency "<<fLatencyL1<<endl;
 248   for (Int_t i0=0; i0<105; i0++)
 249     {
 250       for (Int_t j0=0; j0<5; j0++) allData[i0][j0]=0;
 251     }
 252
 253   Double32_t besttimeA=9999999;
 254   Double32_t besttimeC=9999999;
 255   Int_t pmtBestA=99999;
 256   Int_t pmtBestC=99999;
 257
 258   AliT0RecPoint* frecpoints= new AliT0RecPoint ();
 259
 260   recTree->Branch( "T0", "AliT0RecPoint" ,&frecpoints, 405,1);
 261
 262   AliDebug(10," before read data ");
 263   AliT0RawReader myrawreader(rawReader);
 264
 265   UInt_t type =rawReader->GetType();
 266
 267   if (!myrawreader.Next())
 268     AliDebug(1,Form(" no raw data found!!"));
 269   else
 270     {
 271       if(type == 7) {  //only physics
 272       for (Int_t i=0; i<105; i++) {
 273         for (Int_t iHit=0; iHit<5; iHit++)
 274           {
 275             allData[i][iHit] = myrawreader.GetData(i,iHit);
 276           }
 277       }
 278       Int_t ref=0;
 279       if (refPoint>0)
 280       ref = allData[refPoint][0]-5000;
 281
 282       Float_t channelWidth = fParam->GetChannelWidth() ;
 283
 284       //       Int_t meanT0 = fParam->GetMeanT0();
 285
 286
 287           for (Int_t in=0; in<12; in++)
 288             {
 289               timeCFD[in] = allData[in+1][0] ;
 290               timeCFD[in+12] = allData[in+56+1][0] ;
 291               timeLED[in] = allData[in+12+1][0] ;
 292               timeLED[in+12] = allData[in+68+1][0] ;
 293               AliDebug(10, Form(" readed i %i cfdC %i cfdA %i ledC %i ledA%i ",
 294                                 in, timeCFD[in],timeCFD[in+12],timeLED[in],
 295                                 timeLED[in+12]));
 296             }
 297
 298           for (Int_t in=0; in<12;  in++)
 299             {
 300               chargeQT0[in]=allData[2*in+25][0];
 301               chargeQT1[in]=allData[2*in+26][0];
 302             }
 303
 304            for (Int_t in=12; in<24;  in++)
 305              {
 306                chargeQT0[in]=allData[2*in+57][0];
 307                chargeQT1[in]=allData[2*in+58][0];
 308              }
 309
 310            //    } //cosmic with physics event
 311        for (Int_t in=0; in<24; in++)
 312          AliDebug(10, Form(" readed Raw %i %i %i %i %i",
 313                            in, timeLED[in],timeCFD[in],chargeQT0[in],chargeQT1[in]));
 314         onlineMean = allData[49][0];
 315
 316        Double32_t time[24], adc[24];
 317        for (Int_t ipmt=0; ipmt<24; ipmt++) {
 318          if(timeCFD[ipmt]>0 && timeLED[ipmt]>0){
 319            //for simulated data
 320              //for physics  data
 321            if(( chargeQT1[ipmt] - chargeQT0[ipmt])>0)
 322              adc[ipmt] = chargeQT0[ipmt] - chargeQT1[ipmt];
 323            else
 324              adc[ipmt] = 0;
 325
 326
 327            //      time[ipmt] = fCalib-> WalkCorrection(refAmp, ipmt, adc[ipmt], timeCFD[ipmt] ) ;
 328
 329            Double_t sl = timeLED[ipmt] - timeCFD[ipmt];
 330            time[ipmt] = fCalib-> WalkCorrection( refAmp,ipmt, Int_t(sl), timeCFD[ipmt] ) ;
 331            AliDebug(10,Form(" ipmt %i QTC %i , time in chann %i (led-cfd) %i ",
 332                             ipmt, Int_t(adc[ipmt]) ,Int_t(time[ipmt]),Int_t( sl)));
 333            Double_t ampMip =( (TGraph*)fAmpLED.At(ipmt))->Eval(sl);
 334            Double_t qtMip = ((TGraph*)fQTC.At(ipmt))->Eval(adc[ipmt]);
 335            AliDebug(10,Form("  Amlitude in MIPS LED %f ; QTC %f;  in channels %i\n ",ampMip,qtMip, adc[ipmt]));
 336
 337            frecpoints->SetTime(ipmt, Float_t(time[ipmt]) );
 338            // frecpoints->SetTime(ipmt,Double32_t(timeCFD[ipmt]));
 339            frecpoints->SetAmpLED(ipmt, Double32_t( qtMip)); //for cosmic &pp beam
 340            frecpoints->SetAmp(ipmt, Double32_t(ampMip));
 341
 342          }
 343          else {
 344            time[ipmt] = 0;
 345            adc[ipmt] = 0;
 346          }
 347        }
 348
 349        for (Int_t ipmt=0; ipmt<12; ipmt++){
 350          if(time[ipmt] > 1 ) {
 351            if(time[ipmt]<besttimeC){
 352              besttimeC=time[ipmt]; //timeC
 353              pmtBestC=ipmt;
 354            }
 355          }
 356        }
 357        for ( Int_t ipmt=12; ipmt<24; ipmt++){
 358          if(time[ipmt] > 1) {
 359            if(time[ipmt]<besttimeA) {
 360              besttimeA=time[ipmt]; //timeA
 361              pmtBestA=ipmt;}
 362          }
 363        }
 364        if(besttimeA < 999999)
 365          frecpoints->SetTimeBestA(0.001* besttimeA * channelWidth - fLatencyHPTDC + fLatencyL1A);
 366        if( besttimeC < 999999 )
 367          frecpoints->SetTimeBestC( 0.001 *besttimeC * channelWidth - fLatencyHPTDC + fLatencyL1C);
 368        AliDebug(10,Form(" pmtA %i besttimeA %f ps, pmtC %i besttimeC %f ps",
 369                        pmtBestA,besttimeA, pmtBestC,  besttimeC));
 370         if(besttimeA <999999 && besttimeC < 999999 ){
 371          timeDiff = ( besttimeA - besttimeC) *0.001 * channelWidth + fLatencyL1A - fLatencyL1C;
 372          timeclock = 0.001*channelWidth * Float_t( besttimeA+besttimeC)/2. - fLatencyHPTDC + fLatencyL1;
 373          meanTime = (besttimeA+besttimeC-2.*Float_t(ref))/2.;
 374          vertex =  meanVertex - c*(timeDiff)/2. ; //+ (fdZonA - fdZonC)/2;
 375         }
 376       }  //if phys event
 377       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));
 378       frecpoints->SetT0clock(timeclock);
 379       frecpoints->SetVertex(vertex);
 380       frecpoints->SetMeanTime(meanTime);
 381       frecpoints->SetOnlineMean(Int_t(onlineMean));
 382         // Set triggers
 383
 384       Bool_t tr[5];
 385       Int_t trchan[5]= {50,51,52,55,56};
 386       for (Int_t i=0; i<5; i++) tr[i]=false;
 387       for (Int_t itr=0; itr<5; itr++) {
 388         if(allData[trchan[itr]][0]>0) tr[itr]=true;
 389         frecpoints->SetT0Trig(tr);
 390       }
 391
 392     } // if (else )raw data
 393   recTree->Fill();
 394   if(frecpoints) delete frecpoints;
 395 }
 396
 397
 398   //____________________________________________________________
 399
 400   void AliT0Reconstructor::FillESD(TTree */*digitsTree*/, TTree *clustersTree, AliESDEvent *pESD) const
 401   {
 402
 403   /***************************************************
 404   Resonstruct digits to vertex position
 405   ****************************************************/
 406
 407   AliDebug(1,Form("Start FillESD T0"));
 408   Float_t channelWidth = fParam->GetChannelWidth() ;
 409   Float_t c = 29.9792458; // cm/ns
 410   Float_t currentVertex=0, shift=0;
 411   Int_t ncont=0;
 412   const AliESDVertex* vertex = pESD->GetPrimaryVertex();
 413   if (!vertex)        vertex = pESD->GetPrimaryVertexSPD();
 414   if (!vertex)        vertex = pESD->GetPrimaryVertexTPC();
 415   if (!vertex)        vertex = pESD->GetVertex();
 416
 417   if (vertex) {
 418     AliDebug(2, Form("Got %s (%s) from ESD: %f",
 419                     vertex->GetName(), vertex->GetTitle(), vertex->GetZ()));
 420     currentVertex = vertex->GetZ();
 421
 422     ncont = vertex->GetNContributors();
 423     // cout<<" spdver "<<spdver<<" ncont "<<ncont<<endl;
 424     if(ncont>2 ) {
 425       shift = currentVertex/c;
 426       //          cout<<" vertex shif "<<shift<<" vertex "<<spdver<<" IsFromVertexer3D  "<<fverSPD->IsFromVertexer3D()<<endl;
 427     }
 428   }
 429   TTree *treeR = clustersTree;
 430
 431    AliT0RecPoint* frecpoints= new AliT0RecPoint ();
 432     if (!frecpoints) {
 433     AliError("Reconstruct Fill ESD >> no recpoints found");
 434     return;
 435   }
 436
 437   AliDebug(1,Form("Start FillESD T0"));
 438   TBranch *brRec = treeR->GetBranch("T0");
 439   if (brRec) {
 440     brRec->SetAddress(&frecpoints);
 441   }else{
 442     AliError(Form("EXEC Branch T0 rec not found"));
 443     return;
 444   }
 445
 446     brRec->GetEntry(0);
 447     Double32_t amp[24], time[24], ampQTC[24], timecorr[24];
 448     Double32_t timeClock[3];
 449     Double32_t zPosition = frecpoints -> GetVertex();
 450     Double32_t timeStart = frecpoints -> GetMeanTime();
 451     timeClock[0] = frecpoints -> GetT0clock() ;
 452     timeClock[1] = frecpoints -> GetBestTimeA() + shift;
 453     timeClock[2] = frecpoints -> GetBestTimeC() - shift;
 454     for ( Int_t i=0; i<24; i++) {
 455       time[i] =  frecpoints -> GetTime(i); // ps to ns
 456       amp[i] = frecpoints -> GetAmp(i);
 457       ampQTC[i] = frecpoints -> AmpLED(i);
 458     }
 459     Int_t trig= frecpoints ->GetT0Trig();
 460     pESD->SetT0Trig(trig);
 461
 462     pESD->SetT0zVertex(zPosition); //vertex Z position
 463     pESD->SetT0(timeStart);        // interaction time
 464     for(Int_t i=0; i<3; i++)
 465       pESD->SetT0TOF(i,timeClock[i]);   // interaction time (ns)
 466     pESD->SetT0time(time);         // best TOF on each PMT
 467     pESD->SetT0amplitude(amp);     // number of particles(MIPs) on each PMT
 468
 469     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));
 470
 471     /* if (pESD) {
 472      AliESDfriend *fr = (AliESDfriend*)pESD->FindListObject("AliESDfriend");
 473      if (fr) {
 474         AliDebug(1, Form("Writing TZERO friend data to ESD tree"));
 475
 476         if (ncont>2) {
 477           for ( Int_t i=0; i<24; i++) {
 478             if(i<12) timecorr[i]=time[i]-shift*channelWidth;
 479             if(i>11) timecorr[i]=time[i]-shift*channelWidth;
 480             fr->SetT0timeCorr(timecorr) ;
 481           }
 482             fr->SetT0ampLEDminCFD(amp);
 483             fr->SetT0ampQTC(ampQTC);
 484         }
 485     }
 486   }
 487     */
 488
 489
 490 } // vertex in 3 sigma
 491
 492
 493
 494
 495
 496