RICH/AliRICHDetectV1.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 /*
  17   $Log$
  18
  19 */
  20
  21 #include <stdlib.h>
  22
  23 #include "AliRICHDetectV1.h"
  24 #include "AliRICH.h"
  25 #include "AliRICHPoints.h"
  26 #include "AliRICHDetect.h"
  27 #include "AliRICHHit.h"
  28 #include "AliRICHDigit.h"
  29 #include "AliRICHRawCluster.h"
  30 #include "AliRICHCerenkov.h"
  31 #include "AliRICHSegmentationV0.h"
  32 #include "AliRun.h"
  33 #include "TParticle.h"
  34 #include "TTree.h"
  35 #include "TMath.h"
  36 #include "TRandom.h"
  37 #include "TH3.h"
  38 #include "TH2.h"
  39 #include "TCanvas.h"
  40 #include <TStyle.h>
  41
  42
  43 #include "malloc.h"
  44
  45
  46 ClassImp(AliRICHDetectV1)
  47
  48
  49 //___________________________________________
  50 AliRICHDetectV1::AliRICHDetectV1() : AliRICHDetect()
  51 {
  52
  53 // Default constructor
  54
  55   fc1 = 0;
  56   fc2 = 0;
  57   fc3 = 0;
  58
  59 }
  60
  61 //___________________________________________
  62 AliRICHDetectV1::AliRICHDetectV1(const char *name, const char *title)
  63     : AliRICHDetect()
  64 {
  65
  66   TStyle *mystyle=new TStyle("Plain","mystyle");
  67   mystyle->SetPalette(1,0);
  68   mystyle->cd();
  69
  70
  71   fc1= new TCanvas("c1","Reconstructed points",50,50,300,350);
  72   fc1->Divide(2,2);
  73   fc2= new TCanvas("c2","Reconstructed points after SPOT",370,50,300,350);
  74   fc2->Divide(2,2);
  75   fc3= new TCanvas("c3","Used Digits",690,50,300,350);
  76   fc4= new TCanvas("c4","Mesh activation data",50,430,600,350);
  77   fc4->Divide(2,1);
  78
  79
  80 }
  81
  82 //___________________________________________
  83 AliRICHDetectV1::~AliRICHDetectV1()
  84 {
  85
  86 // Destructor
  87
  88 }
  89
  90
  91 void AliRICHDetectV1::Detect(Int_t nev, Int_t type)
  92 {
  93
  94 //
  95 // Detection algorithm
  96
  97
  98   //printf("Detection started!\n");
  99   Float_t omega,omega1,theta1,x,y,q=0,z,cx,cy,max,radius=0,meanradius=0;
 100   Int_t maxi,maxj,maxk;
 101   Float_t originalOmega, originalPhi, originalTheta;
 102   Float_t steptheta,stepphi,stepomega;
 103   Float_t binomega, bintheta, binphi;
 104   Int_t intomega, inttheta, intphi;
 105   Float_t maxRadius,minRadius,eccentricity,angularadius,offset,phi_relative;
 106   Int_t i,j,k;
 107
 108   AliRICH *pRICH  = (AliRICH*)gAlice->GetDetector("RICH");
 109   AliRICHSegmentationV0*  segmentation;
 110   AliRICHChamber*       iChamber;
 111   AliRICHGeometry*  geometry;
 112
 113   iChamber = &(pRICH->Chamber(0));
 114   segmentation=(AliRICHSegmentationV0*) iChamber->GetSegmentationModel(0);
 115   geometry=iChamber->GetGeometryModel();
 116
 117
 118   //const Float_t Noise_Level=0;                       //Noise Level in percentage of mesh points
 119   //const Float_t t=0.6;                               //Softening of Noise Correction (factor)
 120
 121   const Float_t kPi=TMath::Pi();
 122
 123   const Float_t kHeight=geometry->GetRadiatorToPads(); //Distance from Radiator to Pads in centimeters
 124   //printf("Distance to Pads:%f\n",kHeight);
 125
 126   const Int_t kSpot=2;                                 //number of passes with spot algorithm
 127   const Int_t activ_tresh=0;                           //activation treshold to identify a track
 128
 129   const Int_t kDimensionTheta=2;                       //Matrix dimension for angle Detection
 130   const Int_t kDimensionPhi=2;
 131   const Int_t kDimensionOmega=50;
 132
 133   const Float_t SPOTp=.25;                            //Percentage of spot action
 134   const Float_t kMinOmega=.6;
 135   const Float_t kMaxOmega=.7;                 //Maximum Cherenkov angle to identify
 136   const Float_t kMinTheta=0;
 137   const Float_t kMaxTheta=0.5*kPi/180;
 138   const Float_t kMinPhi=0;
 139   const Float_t kMaxPhi=20*kPi/180;
 140
 141   const Float_t sigma=0.5;                          //half thickness of fiducial band in cm
 142
 143   Float_t rechit[6];                                 //Reconstructed point data
 144
 145   Int_t ***point = i3tensor(0,kDimensionTheta,0,kDimensionPhi,0,kDimensionOmega);
 146   Int_t ***point1 = i3tensor(0,kDimensionTheta,0,kDimensionPhi,0,kDimensionOmega);
 147
 148   steptheta=(kMaxTheta-kMinTheta)/kDimensionTheta;
 149   stepphi=(kMaxPhi-kMinPhi)/kDimensionPhi;
 150   stepomega=(kMaxOmega-kMinOmega)/kDimensionOmega;
 151
 152   static TH3F *Points = new TH3F("Points","Reconstructed points 3D",kDimensionTheta,0,kDimensionTheta,kDimensionPhi,0,kDimensionPhi,kDimensionOmega,0,kDimensionOmega);
 153   static TH2F *ThetaPhi = new TH2F("ThetaPhi","Theta-Phi projection",kDimensionTheta,0,kDimensionTheta,kDimensionPhi,0,kDimensionPhi);
 154   static TH2F *OmegaTheta = new TH2F("OmegaTheta","Omega-Theta projection",kDimensionTheta,0,kDimensionTheta,kDimensionOmega,0,kDimensionOmega);
 155   static TH2F *OmegaPhi = new TH2F("OmegaPhi","Omega-Phi projection",kDimensionPhi,0,kDimensionPhi,kDimensionOmega,0,kDimensionOmega);
 156   static TH3F *SpotPoints = new TH3F("Points","Reconstructed points 3D, spot",kDimensionTheta,0,kDimensionTheta,kDimensionPhi,0,kDimensionPhi,kDimensionOmega,0,kDimensionOmega);
 157   static TH2F *SpotThetaPhi = new TH2F("ThetaPhi","Theta-Phi projection, spot",kDimensionTheta,0,kDimensionTheta,kDimensionPhi,0,kDimensionPhi);
 158   static TH2F *SpotOmegaTheta = new TH2F("OmegaTheta","Omega-Theta projection, spot",kDimensionTheta,0,kDimensionTheta,kDimensionOmega,0,kDimensionOmega);
 159   static TH2F *SpotOmegaPhi = new TH2F("OmegaPhi","Omega-Phi projection, spot",kDimensionPhi,0,kDimensionPhi,kDimensionOmega,0,kDimensionOmega);
 160   static TH2F *DigitsXY = new TH2F("DigitsXY","Pads used for reconstruction",150,-25,25,150,-25,25);
 161   static TH1F *AngleAct = new TH1F("AngleAct","Activation per angle",100,.45,1);
 162   static TH1F *Activation = new TH1F("Activation","Activation per ring",100,0,25);
 163   Points->SetXTitle("theta");
 164   Points->SetYTitle("phi");
 165   Points->SetZTitle("omega");
 166   ThetaPhi->SetXTitle("theta");
 167   ThetaPhi->SetYTitle("phi");
 168   OmegaTheta->SetXTitle("theta");
 169   OmegaTheta->SetYTitle("omega");
 170   OmegaPhi->SetXTitle("phi");
 171   OmegaPhi->SetYTitle("omega");
 172   SpotPoints->SetXTitle("theta");
 173   SpotPoints->SetYTitle("phi");
 174   SpotPoints->SetZTitle("omega");
 175   SpotThetaPhi->SetXTitle("theta");
 176   SpotThetaPhi->SetYTitle("phi");
 177   SpotOmegaTheta->SetXTitle("theta");
 178   SpotOmegaTheta->SetYTitle("omega");
 179   SpotOmegaPhi->SetXTitle("phi");
 180   SpotOmegaPhi->SetYTitle("omega");
 181   AngleAct->SetFillColor(5);
 182   AngleAct->SetXTitle("rad");
 183   AngleAct->SetYTitle("activation");
 184   Activation->SetFillColor(5);
 185   Activation->SetXTitle("activation");
 186
 187   Int_t ntracks = (Int_t)gAlice->TreeH()->GetEntries();
 188
 189   Float_t trackglob[3];
 190   Float_t trackloc[3];
 191
 192   //printf("Area de uma elipse com teta 0 e Omega 45:%f",Area(0,45));
 193
 194   Int_t track;
 195
 196   for (track=0; track<ntracks;track++) {
 197     gAlice->ResetHits();
 198     gAlice->TreeH()->GetEvent(track);
 199     TClonesArray *pHits  = pRICH->Hits();
 200     if (pHits == 0) return;
 201     Int_t nhits = pHits->GetEntriesFast();
 202     if (nhits == 0) continue;
 203     //Int_t nent=(Int_t)gAlice->TreeD()->GetEntries();
 204     AliRICHHit *mHit = 0;
 205     //Int_t npoints=0;
 206
 207     Int_t counter=0, counter1=0;
 208     //Initialization
 209     for(i=0;i<kDimensionTheta;i++)
 210       {
 211         for(j=0;j<kDimensionPhi;j++)
 212           {
 213             for(k=0;k<kDimensionOmega;k++)
 214               {
 215                 counter++;
 216                 point[i][j][k]=0;
 217                 //printf("Dimensions theta:%d, phi:%d, omega:%d",kDimensionTheta,kDimensionPhi,kDimensionOmega);
 218                 //printf("Resetting %d %d %d, time %d\n",i,j,k,counter);
 219                 //-Noise_Level*(Area(i*kPi/(18*dimension),k*kMaxOmega/dimension)-Area((i-1)*kPi/(18*dimension),(k-1)*kMaxOmega/dimension));
 220                 //printf("n-%f",-Noise_Level*(Area(i*kPi/(18*dimension),k*kMaxOmega/dimension)-Area((i-1)*kPi/(18*dimension),(k-1)*kMaxOmega/dimension)));
 221               }
 222           }
 223       }
 224
 225     Int_t ncerenkovs = pRICH->Cerenkovs()->GetEntriesFast();
 226
 227
 228     originalOmega = 0;
 229     counter = 0;
 230
 231     for (Int_t hit=0;hit<ncerenkovs;hit++) {
 232       AliRICHCerenkov* cHit = (AliRICHCerenkov*) pRICH->Cerenkovs()->UncheckedAt(hit);
 233       Float_t loss = cHit->fLoss;                 //did it hit the CsI?
 234       Float_t production = cHit->fProduction;     //was it produced in freon?
 235       Float_t cherenkov = cHit->fCerenkovAngle;   //production cerenkov angle
 236       if (loss == 4 && production == 1)
 237         {
 238           counter +=1;
 239           originalOmega += cherenkov;
 240           //printf("%f\n",cherenkov);
 241         }
 242     }
 243
 244     originalOmega = originalOmega/counter;
 245
 246     //printf("Cerenkovs       : %d\n",counter);
 247
 248     mHit = (AliRICHHit*) pHits->UncheckedAt(0);
 249     Int_t nch  = mHit->Chamber();
 250     originalTheta = mHit->Theta();
 251     originalPhi = mHit->Phi();
 252     trackglob[0] = mHit->X();
 253     trackglob[1] = mHit->Y();
 254     trackglob[2] = mHit->Z();
 255
 256
 257     printf("\n--------------------------------------\n");
 258     printf("Chamber %d, track %d\n", nch, track);
 259     printf("Original omega: %f\n",originalOmega);
 260
 261     iChamber = &(pRICH->Chamber(nch-1));
 262
 263     printf("Nch:%d x:%f y:%f\n",nch,trackglob[0],trackglob[2]);
 264
 265     iChamber->GlobaltoLocal(trackglob,trackloc);
 266
 267     iChamber->LocaltoGlobal(trackloc,trackglob);
 268
 269
 270     cx=trackloc[0];
 271     cy=trackloc[2];
 272
 273     printf("cy:%f  ", cy);
 274
 275     if(counter != 0)    //if there are cerenkovs
 276       {
 277
 278         AliRICHDigit *points = 0;
 279         TClonesArray *pDigits = pRICH->DigitsAddress(nch-1);
 280
 281         AliRICHRawCluster *cluster =0;
 282         TClonesArray *pClusters = pRICH->RawClustAddress(nch-1);
 283
 284         Int_t maxcycle=0;
 285
 286         //digitize from digits
 287
 288         if(type==0)
 289           {
 290             gAlice->TreeD()->GetEvent(0);
 291             Int_t ndigits = pDigits->GetEntriesFast();
 292             maxcycle=ndigits;
 293             //printf("Got %d digits\n",ndigits);
 294           }
 295
 296         //digitize from clusters
 297
 298         if(type==1)
 299           {
 300             Int_t nent=(Int_t)gAlice->TreeR()->GetEntries();
 301             gAlice->TreeR()->GetEvent(nent-1);
 302             Int_t nclusters = pClusters->GetEntriesFast();
 303             maxcycle=nclusters;
 304             //printf("Got %d clusters\n",nclusters);
 305           }
 306
 307
 308
 309
 310         counter=0;
 311         printf("Starting calculations\n");
 312         printf("           Start                                                                                              Finish\n");
 313         printf("Progress:     ");
 314
 315
 316         for(Float_t theta=0;theta<kMaxTheta;theta+=steptheta)
 317           {
 318             printf(".");
 319             for(Float_t phi=0;phi<=kMaxPhi;phi+=stepphi)
 320               {
 321                 for(omega=kMinOmega;omega<=kMaxOmega;omega+=stepomega)
 322                   {
 323                     //printf("Entering angle cycle\n");
 324                     omega1=SnellAngle(omega);
 325                     theta1=SnellAngle(theta);
 326
 327                     maxRadius = kHeight*(tan(omega1+theta1)+tan(omega1-theta1))/2;
 328                     minRadius = kHeight*tan(omega1);
 329                     eccentricity = sqrt(1-(minRadius*minRadius)/(maxRadius*maxRadius));
 330
 331
 332
 333                     offset = kHeight*(tan(omega1+theta1)-tan(omega1-theta1))/2;
 334
 335                     //printf("phi:%f theta:%f omega:%f \n", phi,theta,omega);
 336
 337                     //printf("offset:%f cx:%f cy:%f \n", offset,cx,cy);
 338
 339                     Float_t cxn = cx + offset * sin(phi);
 340                     Float_t cyn = cy + offset * cos(phi);
 341
 342                     //printf("cxn:%f cyn:%f\n", cxn, cyn);
 343
 344                     for (Int_t cycle=0;cycle<maxcycle;cycle++)
 345                       {
 346                         //printf("Entering point cycle");
 347                         if(type==0)
 348                           {
 349                             points=(AliRICHDigit*) pDigits->UncheckedAt(cycle);
 350                             segmentation->GetPadC(points->PadX(), points->PadY(),x, y, z);
 351                           }
 352
 353                         if(type==1)
 354                           {
 355                             cluster=(AliRICHRawCluster*) pClusters->UncheckedAt(cycle);
 356                             x=cluster->fX;
 357                             y=cluster->fY;
 358                             q=cluster->fQ;
 359                           }
 360
 361                         if(type ==0 || q > 100)
 362
 363                           {
 364
 365                             x=x-cxn;
 366                             y=y-cyn;
 367                             radius=TMath::Sqrt(TMath::Power(x,2)+TMath::Power(y,2));
 368
 369                             phi_relative = asin(y/radius);
 370                             phi_relative = TMath::Abs(phi_relative - phi);
 371
 372                             angularadius = maxRadius*sqrt((1-eccentricity*eccentricity)/(1-eccentricity*eccentricity*cos(phi_relative)*cos(phi_relative)));
 373
 374                             //printf("omega:%f min:%f rad:%f max:%f\n",omega, angularadius-sigma,radius,angularadius+sigma);
 375
 376
 377                             if((angularadius-sigma)<radius && (angularadius+sigma)>radius)
 378                               {
 379                                 printf("omega:%f min:%f rad:%f max:%f\n",omega, angularadius-sigma,radius,angularadius+sigma);
 380
 381                                 bintheta=theta*kDimensionTheta/kMaxTheta;
 382                                 binphi=phi*kDimensionPhi/kMaxPhi;
 383                                 binomega=omega*kDimensionOmega/(kMaxOmega-kMinOmega);
 384
 385                                 if(Int_t(bintheta+0.5)==Int_t(bintheta))
 386                                   inttheta=Int_t(bintheta);
 387                                 else
 388                                   inttheta=Int_t(bintheta+0.5);
 389
 390                                 if(Int_t(binomega+0.5)==Int_t(binomega))
 391                                   intomega=Int_t(binomega);
 392                                 else
 393                               intomega=Int_t(binomega+0.5);
 394
 395                                 if(Int_t(binphi+0.5)==Int_t(binphi))
 396                                   intphi=Int_t(binphi);
 397                                 else
 398                                   intphi=Int_t(binphi+0.5);
 399
 400                                 //printf("Point added at %d %d %d\n",inttheta,intphi,intomega);
 401
 402                                 //if(type==0)
 403                                 point[inttheta][intphi][intomega]+=1;
 404                                 //if(type==1)
 405                                 //point[inttheta][intphi][intomega]+=(Int_t)(q);
 406
 407                                 //printf("Omega stored:%d\n",intomega);
 408                                 Points->Fill(inttheta,intphi,intomega,(float) 1);
 409                                 ThetaPhi->Fill(inttheta,intphi,(float) 1);
 410                                 OmegaTheta->Fill(inttheta,intomega,(float) 1);
 411                                 OmegaPhi->Fill(intphi,intomega,(float) 1);
 412                                 //printf("Filling at %d %d %d\n",Int_t(theta*kDimensionTheta/kMaxTheta),Int_t(phi*kDimensionPhi/kMaxPhi),Int_t(omega*kDimensionOmega/kMaxOmega));
 413                               }
 414                                 //if(omega<kMaxOmega)point[Int_t(theta)][Int_t(phi)][Int_t(omega)]+=1;
 415                           }
 416                       }
 417                   }
 418               }
 419
 420           }
 421                 //printf("Used %d digits for theta %3.1f\n",counter1, theta*180/kPi);
 422
 423         printf("\n");
 424
 425         meanradius=meanradius/counter;
 426         //printf("Mean radius:%f, counter:%d\n",meanradius,counter);
 427         rechit[5]=meanradius;
 428         //printf("Used %d digits\n",counter1);
 429         //printf("\n");
 430
 431         if(nev<2)
 432           {
 433             if(nev==0)
 434               {
 435                 fc1->cd(1);
 436                 Points->Draw("colz");
 437                 fc1->cd(2);
 438                 ThetaPhi->Draw("colz");
 439                 fc1->cd(3);
 440                 OmegaTheta->Draw("colz");
 441                 fc1->cd(4);
 442                 OmegaPhi->Draw("colz");
 443                 fc3->cd();
 444                 DigitsXY->Draw("colz");
 445               }
 446             else
 447               {
 448                 //fc1->cd(1);
 449                 //Points->Draw("same");
 450                 //fc1->cd(2);
 451                 //ThetaPhi->Draw("same");
 452                 //fc1->cd(3);
 453                 //OmegaTheta->Draw("same");
 454                 //fc1->cd(4);
 455                 //OmegaPhi->Draw("same");
 456               }
 457           }
 458
 459
 460         //SPOT execute twice
 461         for(Int_t s=0;s<kSpot;s++)
 462           {
 463             printf("     Applying Spot algorithm, pass %d\n", s);
 464
 465         //buffer copy
 466         for(i=0;i<=kDimensionTheta;i++)
 467           {
 468             for(j=0;j<=kDimensionPhi;j++)
 469               {
 470                 for(k=0;k<=kDimensionOmega;k++)
 471                   {
 472                     point1[i][j][k]=point[i][j][k];
 473                   }
 474               }
 475           }
 476
 477         //SPOT algorithm
 478         for(i=1;i<kDimensionTheta-1;i++)
 479           {
 480             for(j=1;j<kDimensionPhi-1;j++)
 481               {
 482                 for(k=1;k<kDimensionOmega-1;k++)
 483                   {
 484                     if((point[i][k][j]>point[i-1][k][j])&&(point[i][k][j]>point[i+1][k][j])&&
 485                        (point[i][k][j]>point[i][k-1][j])&&(point[i][k][j]>point[i][k+1][j])&&
 486                        (point[i][k][j]>point[i][k][j-1])&&(point[i][k][j]>point[i][k][j+1]))
 487                       {
 488                         //cout<<"SPOT"<<endl;
 489                         //Execute SPOT on point
 490                         point1[i][j][k]+=Int_t(SPOTp*(point[i-1][k][j]+point[i+1][k][j]+point[i][k-1][j]+point[i][k+1][j]+point[i][k][j-1]+point[i][k][j+1]));
 491                         point1[i-1][k][j]=Int_t(SPOTp*point[i-1][k][j]);
 492                         point1[i+1][k][j]=Int_t(SPOTp*point[i+1][k][j]);
 493                         point1[i][k-1][j]=Int_t(SPOTp*point[i][k-1][j]);
 494                         point1[i][k+1][j]=Int_t(SPOTp*point[i][k+1][j]);
 495                         point1[i][k][j-1]=Int_t(SPOTp*point[i][k][j-1]);
 496                         point1[i][k][j+1]=Int_t(SPOTp*point[i][k][j+1]);
 497                       }
 498                   }
 499               }
 500           }
 501
 502         //copy from buffer copy
 503         counter1=0;
 504         for(i=1;i<kDimensionTheta;i++)
 505           {
 506             for(j=1;j<kDimensionPhi;j++)
 507               {
 508                 for(k=1;k<kDimensionOmega;k++)
 509                   {
 510                     point[i][j][k]=point1[i][j][k];
 511                     if(nev<20)
 512                       {
 513                         if(s==kSpot-1)
 514                           {
 515                             if(point1[i][j][k] != 0)
 516                               {
 517                                 SpotPoints->Fill(i,j,k,(float) point1[i][j][k]);
 518                                 //printf("Random number %f\n",random->Rndm(2));
 519                                 //if(random->Rndm() < .2)
 520                                   //{
 521                                 SpotThetaPhi->Fill(i,j,(float) point1[i][j][k]);
 522                                 SpotOmegaTheta->Fill(i,k,(float) point1[i][j][k]);
 523                                 SpotOmegaPhi->Fill(j,k,(float) point1[i][j][k]);
 524                                     counter1++;
 525                                   //}
 526                                 //printf("Filling at %d %d %d value %f\n",i,j,k,(float) point1[i][j][k]);
 527                               }
 528                           }
 529                       }
 530                     //if(point1[i][j][k] != 0)
 531                       //printf("Last transfer point: %d, point1, %d\n",point[i][j][k],point1[i][j][k]);
 532                   }
 533               }
 534           }
 535       }
 536
 537     //printf("Filled %d cells\n",counter1);
 538
 539         if(nev<2)
 540           {
 541             if(nev==0)
 542               {
 543                 fc2->cd(1);
 544                 SpotPoints->Draw("colz");
 545                 fc2->cd(2);
 546                 SpotThetaPhi->Draw("colz");
 547                 fc2->cd(3);
 548                 SpotOmegaTheta->Draw("colz");
 549                 fc2->cd(4);
 550                 SpotOmegaPhi->Draw("colz");
 551               }
 552             else
 553               {
 554                 //fc2->cd(1);
 555                 //SpotPoints->Draw("same");
 556                 //fc2->cd(2);
 557                 //SpotThetaPhi->Draw("same");
 558                 //fc2->cd(3);
 559                 //SpotOmegaTheta->Draw("same");
 560                 //fc2->cd(4);
 561                 //SpotOmegaPhi->Draw("same");
 562               }
 563           }
 564
 565
 566         //Identification is equivalent to maximum determination
 567         max=0;maxi=0;maxj=0;maxk=0;
 568
 569         printf("     Proceeding to identification");
 570
 571         for(i=0;i<kDimensionTheta;i++)
 572           for(j=0;j<kDimensionPhi;j++)
 573             for(k=0;k<kDimensionOmega;k++)
 574               if(point[i][j][k]>max)
 575                 {
 576                   //cout<<"maxi="<<i*90/dimension<<" maxj="<<j*90/dimension<<" maxk="<<k*kMaxOmega/dimension*180/kPi<<" max="<<max<<endl;
 577                 maxi=i;maxj=j;maxk=k;
 578                 max=point[i][j][k];
 579                 printf(".");
 580                 //printf("Max Omega %d, Max Theta %d, Max Phi %d (%d counts)\n",maxk,maxi,maxj,max);
 581                 }
 582         printf("\n");
 583
 584         Float_t FinalOmega;
 585         Float_t FinalTheta;
 586         Float_t FinalPhi;
 587
 588
 589         if(max>activ_tresh)
 590           {
 591             FinalOmega = maxk*(kMaxOmega-kMinOmega)/kDimensionOmega;
 592             FinalTheta = maxi*kMaxTheta/kDimensionTheta;
 593             FinalPhi = maxj*kMaxPhi/kDimensionPhi;
 594
 595             FinalOmega += kMinOmega;
 596           }
 597         else
 598           {
 599             FinalOmega = 0;
 600             FinalTheta = 0;
 601             FinalPhi = 0;
 602
 603             printf("     Ambiguous data!\n");
 604           }
 605
 606
 607
 608         //printf("Detected angle for height %3.1f and for center %3.1f %3.1f:%f\n",h,cx,cy,maxk*kPi/(kDimensionTheta*4));
 609         printf("     Indentified angles: cerenkov - %f, theta - %3.1f, phi - %3.1f (%f activation)\n", FinalOmega, FinalTheta*180/kPi, FinalPhi*180/kPi, max);
 610         //printf("Detected angle for height %3.1f and for center %3.1f %3.1f:%f\n",kHeight,cx,cy,maxk);
 611
 612         AngleAct->Fill(FinalOmega, (float) max);
 613         Activation->Fill(max, (float) 1);
 614
 615         //fscanf(omegas,"%f",&realomega);
 616         //fscanf(thetas,"%f",&realtheta);
 617         //printf("Real Omega: %f",realomega);
 618         //cout<<"Detected:theta="<<maxi*90/kDimensionTheta<<"phi="<<maxj*90/kDimensionPhi<<"omega="<<maxk*kMaxOmega/kDimensionOmega*180/kPi<<" OmegaError="<<fabs(maxk*kMaxOmega/kDimensionOmega*180/kPi-realomega)<<" ThetaError="<<fabs(maxi*90/kDimensionTheta-realtheta)<<endl<<endl;
 619
 620         //fprintf(results,"Center Coordinates, cx=%6.2f cy=%6.2f, Real Omega=%6.2f, Detected Omega=%6.2f, Omega Error=%6.2f Theta Error=%6.2f\n",cx,cy,realomega,maxk*kMaxOmega/kDimensionOmega*180/kPi,fabs(maxk*kMaxOmega/kDimensionOmega*180/kPi-realomega),fabs(maxi*90/kDimensionTheta-realtheta));
 621
 622     /*for(j=0;j<np;j++)
 623       pointpp(maxj*90/kDimensionTheta,maxi*90/kDimensionPhi,maxk*kMaxOmega/kDimensionOmega*180/kPi,cx,cy);//Generates a point on the elipse*/
 624
 625
 626     //Start filling rec. hits
 627
 628     rechit[0] = FinalTheta;
 629     rechit[1] = 90*kPi/180 + FinalPhi;
 630     rechit[2] = FinalOmega;
 631     rechit[3] = cx;
 632     rechit[4] = cy;
 633
 634     //CreatePoints(FinalTheta, 270*kPi/180 + FinalPhi, FinalOmega, kHeight);
 635
 636     //printf ("track %d, theta %f, phi %f, omega %f\n\n\n",track,rechit[0],rechit[1],rechit[2]);
 637     //printf("rechit %f %f %f %f %f\n",rechit[0],rechit[1],rechit[2],rechit[3],rechit[4]);
 638     //printf("Chamber:%d",nch);
 639
 640
 641       }
 642
 643     else   //if no cerenkovs
 644
 645       {
 646
 647         rechit[0] = 0;
 648         rechit[1] = 0;
 649         rechit[2] = 0;
 650         rechit[3] = 0;
 651         rechit[4] = 0;
 652         originalOmega = 0;
 653         originalTheta = 0;
 654         originalPhi =0;
 655       }
 656
 657
 658     // fill rechits
 659     pRICH->AddRecHit3D(nch-1,rechit,originalOmega, originalTheta, originalPhi);
 660     printf("track %d, theta r:%f o:%f, phi r:%f o:%f, omega r:%f o:%f cx:%f cy%f\n\n\n", track, rechit[0], originalTheta, rechit[1], originalPhi, rechit[2], originalOmega, cx, cy);
 661
 662   }
 663
 664   if(type==1)  //reco from clusters
 665     {
 666       pRICH->ResetRawClusters();
 667       //Int_t nent=(Int_t)gAlice->TreeR()->GetEntries();
 668       //gAlice->TreeR()->GetEvent(track);
 669       //printf("Going to branch %d\n",track);
 670       //gAlice->GetEvent(nev);
 671     }
 672
 673
 674   //printf("\n\n\n\n");
 675   gAlice->TreeR()->Fill();
 676   TClonesArray *fRec;
 677   for (i=0;i<kNCH;i++) {
 678     fRec=pRICH->RecHitsAddress3D(i);
 679     int ndig=fRec->GetEntriesFast();
 680     printf ("Chamber %d, rings %d\n",i+1,ndig);
 681   }
 682
 683   fc4->cd(1);
 684   AngleAct->Draw();
 685   fc4->cd(2);
 686   Activation->Draw();
 687
 688   pRICH->ResetRecHits3D();
 689
 690   free_i3tensor(point,0,kDimensionTheta,0,kDimensionPhi,0,kDimensionOmega);
 691   free_i3tensor(point1,0,kDimensionTheta,0,kDimensionPhi,0,kDimensionOmega);
 692
 693
 694 }
 695
 696 Int_t ***AliRICHDetectV1::i3tensor(long nrl, long nrh, long ncl, long nch, long ndl, long ndh)
 697 // allocate a Int_t 3tensor with range t[nrl..nrh][ncl..nch][ndl..ndh]
 698 {
 699   long i,j,nrow=nrh-nrl+1,ncol=nch-ncl+1,ndep=ndh-ndl+1;
 700   Int_t ***t;
 701
 702   int NR_END=1;
 703
 704   // allocate pointers to pointers to rows
 705   t=(Int_t ***) malloc((size_t)((nrow+NR_END)*sizeof(Int_t**)));
 706   if (!t) printf("allocation failure 1 in f3tensor()");
 707   t += NR_END;
 708   t -= nrl;
 709
 710   // allocate pointers to rows and set pointers to them
 711   t[nrl]=(Int_t **) malloc((size_t)((nrow*ncol+NR_END)*sizeof(Int_t*)));
 712   if (!t[nrl]) printf("allocation failure 2 in f3tensor()");
 713   t[nrl] += NR_END;
 714   t[nrl] -= ncl;
 715
 716   // allocate rows and set pointers to them
 717   t[nrl][ncl]=(Int_t *) malloc((size_t)((nrow*ncol*ndep+NR_END)*sizeof(Int_t)));
 718   if (!t[nrl][ncl]) printf("allocation failure 3 in f3tensor()");
 719   t[nrl][ncl] += NR_END;
 720   t[nrl][ncl] -= ndl;
 721
 722   for(j=ncl+1;j<=nch;j++) t[nrl][j]=t[nrl][j-1]+ndep;
 723   for(i=nrl+1;i<=nrh;i++) {
 724     t[i]=t[i-1]+ncol;
 725     t[i][ncl]=t[i-1][ncl]+ncol*ndep;
 726     for(j=ncl+1;j<=nch;j++) t[i][j]=t[i][j-1]+ndep;
 727   }
 728
 729   // return pointer to array of pointers to rows
 730   return t;
 731 }
 732
 733
 734 void AliRICHDetectV1::free_i3tensor(int ***t, long nrl, long nrh, long ncl, long nch,long ndl, long ndh)
 735 // free a Int_t f3tensor allocated by i3tensor()
 736 {
 737   int NR_END=1;
 738
 739   free((char*) (t[nrl][ncl]+ndl-NR_END));
 740   free((char*) (t[nrl]+ncl-NR_END));
 741   free((char*) (t+nrl-NR_END));
 742 }