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TDI in correct position and minor correction
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c1076715 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 $Log$
29803c51 18 Revision 1.13 2001/05/10 12:26:31 jbarbosa
19 Totally reworked version of reconstruction algorithm.
20
ac6e04fc 21 Revision 1.12 2001/02/27 22:15:03 jbarbosa
22 Removed compiler warning.
23
2966f600 24 Revision 1.11 2001/02/27 15:21:46 jbarbosa
25 Transition to SDigits.
26
b251a2b5 27 Revision 1.10 2001/02/13 20:39:06 jbarbosa
28 Changes to make it work with new IO.
29
a5886574 30 Revision 1.9 2001/01/22 21:39:11 jbarbosa
31 Several tune-ups
32
eb1ee126 33 Revision 1.8 2000/11/15 15:52:53 jbarbosa
34 Turned on spot algorithm.
35
ceccff49 36 Revision 1.7 2000/11/01 15:37:05 jbarbosa
37 Updated to use its own rec. point object.
38
4a5c8776 39 Revision 1.6 2000/10/02 21:28:12 fca
40 Removal of useless dependecies via forward declarations
41
94de3818 42 Revision 1.5 2000/06/30 16:30:28 dibari
43 Disabled writing to rechits.
44
a366fdbe 45 Revision 1.4 2000/06/15 15:46:59 jbarbosa
46 Corrected compilation errors on HP-UX (replaced pow with TMath::Power)
47
00df6e79 48 Revision 1.3 2000/06/13 13:15:41 jbarbosa
49 Still some code cleanup done (variable names)
50
3a3df9e3 51 Revision 1.2 2000/06/12 15:19:30 jbarbosa
52 Cleaned up version.
53
237c933d 54 Revision 1.1 2000/04/19 13:05:14 morsch
55 J. Barbosa's spot reconstruction algorithm.
56
c1076715 57*/
58
29803c51 59#include <stdlib.h>
60
c1076715 61
62#include "AliRICH.h"
63#include "AliRICHPoints.h"
64#include "AliRICHDetect.h"
237c933d 65#include "AliRICHHit.h"
66#include "AliRICHDigit.h"
ac6e04fc 67#include "AliRICHSegmentationV0.h"
c1076715 68#include "AliRun.h"
69#include "TParticle.h"
94de3818 70#include "TTree.h"
c1076715 71#include "TMath.h"
72#include "TRandom.h"
ac6e04fc 73#include "TH3.h"
74#include "TH2.h"
75#include "TCanvas.h"
c1076715 76
ac6e04fc 77#include "malloc.h"
c1076715 78
79
80ClassImp(AliRICHDetect)
81//___________________________________________
82AliRICHDetect::AliRICHDetect() : TObject()
83{
237c933d 84
85// Default constructor
86
c1076715 87}
88
89//___________________________________________
90AliRICHDetect::AliRICHDetect(const char *name, const char *title)
91 : TObject()
92{
237c933d 93
ac6e04fc 94
95 fc1= new TCanvas("c1","Reconstructed points",50,50,300,350);
96 fc1->Divide(2,2);
97 fc2= new TCanvas("c2","Reconstructed points after SPOT",50,50,300,350);
98 fc2->Divide(2,2);
99 fc3= new TCanvas("c3","Used Digits",50,50,300,350);
100 //fc3->Divide(2,1);
101
102}
103
104//___________________________________________
105AliRICHDetect::~AliRICHDetect()
106{
c1076715 107
ac6e04fc 108// Destructor
109
c1076715 110}
111
112
ac6e04fc 113void AliRICHDetect::Detect(Int_t nev)
c1076715 114{
115
237c933d 116//
117// Detection algorithm
118
119
c1076715 120 //printf("Detection started!\n");
ac6e04fc 121 Float_t omega,omega1,theta1,steptheta,stepphi,x,y,z,cx,cy,l,aux1,aux2,aux3,max,radius=0,meanradius=0;
122 Int_t maxi,maxj,maxk;
c1076715 123 //Float_t theta,phi,realomega,realtheta;
ac6e04fc 124 Float_t binomega, bintheta, binphi;
125 Int_t intomega, inttheta, intphi;
c1076715 126 Int_t i,j,k;
ac6e04fc 127
128 AliRICH *pRICH = (AliRICH*)gAlice->GetDetector("RICH");
129 AliRICHSegmentationV0* segmentation;
130 AliRICHChamber* iChamber;
131 AliRICHGeometry* geometry;
132
133 iChamber = &(pRICH->Chamber(0));
134 segmentation=(AliRICHSegmentationV0*) iChamber->GetSegmentationModel(0);
135 geometry=iChamber->GetGeometryModel();
ceccff49 136
c1076715 137
ac6e04fc 138 //const Float_t Noise_Level=0; //Noise Level in percentage of mesh points
139 //const Float_t t=0.6; //Softening of Noise Correction (factor)
c1076715 140
ac6e04fc 141 const Float_t kPi=TMath::Pi();
c1076715 142
ac6e04fc 143 const Float_t kHeight=geometry->GetRadiatorToPads(); //Distance from Radiator to Pads in centimeters
144 //printf("Distance to Pads:%f\n",kHeight);
ceccff49 145
ac6e04fc 146 const Int_t kSpot=0; //number of passes with spot algorithm
c1076715 147
ac6e04fc 148 const Int_t kDimensionTheta=30; //Matrix dimension for angle Detection
149 const Int_t kDimensionPhi=45;
150 const Int_t kDimensionOmega=100;
c1076715 151
ac6e04fc 152 const Float_t SPOTp=1; //Percentage of spot action
153 const Float_t kMinOmega=20*kPi/180;
154 const Float_t kMaxOmega=70*kPi/180; //Maximum Cherenkov angle to identify
155 const Float_t kMinTheta=0;
156 const Float_t kMaxTheta=15*kPi/180;
157 //const Float_t kMaxTheta=0.1;
158 const Float_t kMinPhi=0;
159 const Float_t kMaxPhi=360*kPi/180;
160
eb1ee126 161
ac6e04fc 162 Float_t kCorr=0.61; //Correction factor, accounting for aberration, refractive index, etc.
163 //const Float_t kCorr=.9369; //from 0 incidence
164 //const Float_t kCorr=1;
165
166 //TRandom* random=0;
167
168 Float_t rechit[6]; //Reconstructed point data
169
c1076715 170
c1076715 171
ac6e04fc 172 //printf("Creating matrices\n");
173 //Float_t point[kDimensionTheta][kDimensionPhi][kDimensionOmega];
174 //Float_t point1[kDimensionTheta][kDimensionPhi][kDimensionOmega];
175 //printf("Created matrices\n");
176
177 Int_t ***point = i3tensor(0,kDimensionTheta,0,kDimensionPhi,0,kDimensionOmega);
178 Int_t ***point1 = i3tensor(0,kDimensionTheta,0,kDimensionPhi,0,kDimensionOmega);
c1076715 179
ac6e04fc 180 //Int_t **point = new Int_t[kDimensionTheta][kDimensionPhi][kDimensionOmega];
181 //Int_t **point1 = new Int_t[kDimensionTheta][kDimensionPhi][kDimensionOmega];
182
183 steptheta=(kMaxTheta-kMinTheta)/kDimensionTheta;
184 stepphi=(kMaxPhi-kMinPhi)/kDimensionPhi;
185
186 static TH3F *Points = new TH3F("Points","Reconstructed points 3D",kDimensionTheta,0,kDimensionTheta,kDimensionPhi,0,kDimensionPhi,kDimensionOmega,0,kDimensionOmega);
187 static TH2F *ThetaPhi = new TH2F("ThetaPhi","Theta-Phi projection",kDimensionTheta,0,kDimensionTheta,kDimensionPhi,0,kDimensionPhi);
188 static TH2F *OmegaTheta = new TH2F("OmegaTheta","Omega-Theta projection",kDimensionTheta,0,kDimensionTheta,kDimensionOmega,0,kDimensionOmega);
189 static TH2F *OmegaPhi = new TH2F("OmegaPhi","Omega-Phi projection",kDimensionPhi,0,kDimensionPhi,kDimensionOmega,0,kDimensionOmega);
190 static TH3F *SpotPoints = new TH3F("Points","Reconstructed points 3D, spot",kDimensionTheta,0,kDimensionTheta,kDimensionPhi,0,kDimensionPhi,kDimensionOmega,0,kDimensionOmega);
191 static TH2F *SpotThetaPhi = new TH2F("ThetaPhi","Theta-Phi projection, spot",kDimensionTheta,0,kDimensionTheta,kDimensionPhi,0,kDimensionPhi);
192 static TH2F *SpotOmegaTheta = new TH2F("OmegaTheta","Omega-Theta projection, spot",kDimensionTheta,0,kDimensionTheta,kDimensionOmega,0,kDimensionOmega);
193 static TH2F *SpotOmegaPhi = new TH2F("OmegaPhi","Omega-Phi projection, spot",kDimensionPhi,0,kDimensionPhi,kDimensionOmega,0,kDimensionOmega);
194 static TH2F *DigitsXY = new TH2F("DigitsXY","Pads used for reconstruction",150,-25,25,150,-25,25);
195 Points->SetXTitle("theta");
196 Points->SetYTitle("phi");
197 Points->SetZTitle("omega");
198 ThetaPhi->SetXTitle("theta");
199 ThetaPhi->SetYTitle("phi");
200 OmegaTheta->SetXTitle("theta");
201 OmegaTheta->SetYTitle("omega");
202 OmegaPhi->SetXTitle("phi");
203 OmegaPhi->SetYTitle("omega");
204 SpotPoints->SetXTitle("theta");
205 SpotPoints->SetYTitle("phi");
206 SpotPoints->SetZTitle("omega");
207 SpotThetaPhi->SetXTitle("theta");
208 SpotThetaPhi->SetYTitle("phi");
209 SpotOmegaTheta->SetXTitle("theta");
210 SpotOmegaTheta->SetYTitle("omega");
211 SpotOmegaPhi->SetXTitle("phi");
212 SpotOmegaPhi->SetYTitle("omega");
213
c1076715 214 Int_t ntracks = (Int_t)gAlice->TreeH()->GetEntries();
215 //Int_t ntrks = gAlice->GetNtrack();
216
217 Float_t trackglob[3];
218 Float_t trackloc[3];
219
c1076715 220 //printf("Area de uma elipse com teta 0 e Omega 45:%f",Area(0,45));
221
4a5c8776 222 Int_t track;
c1076715 223
4a5c8776 224 for (track=0; track<ntracks;track++) {
c1076715 225 gAlice->ResetHits();
226 gAlice->TreeH()->GetEvent(track);
3a3df9e3 227 TClonesArray *pHits = pRICH->Hits();
228 if (pHits == 0) return;
229 Int_t nhits = pHits->GetEntriesFast();
c1076715 230 if (nhits == 0) continue;
2966f600 231 //Int_t nent=(Int_t)gAlice->TreeD()->GetEntries();
ac6e04fc 232 gAlice->TreeD()->GetEvent(0);
c1076715 233 AliRICHHit *mHit = 0;
234 AliRICHDigit *points = 0;
235 //Int_t npoints=0;
236
ac6e04fc 237 Int_t counter=0, counter1=0;
c1076715 238 //Initialization
3a3df9e3 239 for(i=0;i<kDimensionTheta;i++)
c1076715 240 {
3a3df9e3 241 for(j=0;j<kDimensionPhi;j++)
c1076715 242 {
3a3df9e3 243 for(k=0;k<kDimensionOmega;k++)
c1076715 244 {
245 counter++;
3a3df9e3 246 point[i][j][k]=0;
247 //printf("Dimensions theta:%d, phi:%d, omega:%d",kDimensionTheta,kDimensionPhi,kDimensionOmega);
c1076715 248 //printf("Resetting %d %d %d, time %d\n",i,j,k,counter);
3a3df9e3 249 //-Noise_Level*(Area(i*kPi/(18*dimension),k*kMaxOmega/dimension)-Area((i-1)*kPi/(18*dimension),(k-1)*kMaxOmega/dimension));
250 //printf("n-%f",-Noise_Level*(Area(i*kPi/(18*dimension),k*kMaxOmega/dimension)-Area((i-1)*kPi/(18*dimension),(k-1)*kMaxOmega/dimension)));
c1076715 251 }
252 }
253 }
3a3df9e3 254 mHit = (AliRICHHit*) pHits->UncheckedAt(0);
c1076715 255 //printf("Aqui vou eu\n");
256 Int_t nch = mHit->fChamber;
257 //printf("Aqui fui eu\n");
94de3818 258 trackglob[0] = mHit->X();
259 trackglob[1] = mHit->Y();
260 trackglob[2] = mHit->Z();
c1076715 261
ac6e04fc 262 printf("Chamber processed:%d\n",nch);
ceccff49 263
ac6e04fc 264 printf("Reconstructing particle at (global coordinates): %3.1f %3.1f %3.1f,\n",trackglob[0],trackglob[1],trackglob[2]);
c1076715 265
3a3df9e3 266 iChamber = &(pRICH->Chamber(nch-1));
c1076715 267
268 //printf("Nch:%d\n",nch);
269
270 iChamber->GlobaltoLocal(trackglob,trackloc);
271
ac6e04fc 272 printf("Reconstructing particle at (local coordinates) : %3.1f %3.1f %3.1f\n",trackloc[0],trackloc[1],trackloc[2]);
c1076715 273
274
275 iChamber->LocaltoGlobal(trackloc,trackglob);
276
3a3df9e3 277 //printf("Transformation 2: %3.1f %3.1f %3.1f\n",trackglob[0],trackglob[1],trackglob[2]);
c1076715 278
ac6e04fc 279 cx=trackloc[0];
280 cy=trackloc[2];
c1076715 281
282
3a3df9e3 283 TClonesArray *pDigits = pRICH->DigitsAddress(nch-1);
284 Int_t ndigits = pDigits->GetEntriesFast();
c1076715 285
286 //printf("Got %d digits\n",ndigits);
287
ac6e04fc 288 counter=0;
289 printf("Starting calculations\n");
290 for(Float_t theta=0;theta<kMaxTheta;theta+=steptheta)
291 {
292 //printf(".");
293 for(Float_t phi=0;phi<=kMaxPhi;phi+=stepphi)
294 {
295 //printf("Phi:%3.1f\n", phi*180/kPi);
296 counter1=0;
c1076715 297 for (Int_t dig=0;dig<ndigits;dig++)
298 {
3a3df9e3 299 points=(AliRICHDigit*) pDigits->UncheckedAt(dig);
ac6e04fc 300 segmentation->GetPadC(points->fPadX, points->fPadY,x, y, z);
301 x=x-cx;
302 y=y-cy;
303 radius=TMath::Sqrt(TMath::Power(x,2)+TMath::Power(y,2));
304
305 if(radius>4)
c1076715 306 {
ac6e04fc 307 //if(theta==0 && phi==0)
308 //{
309 //printf("Radius: %f, Max Radius: %f\n",radius,kCorr*kHeight*tan(theta+kMaxOmega)*3/4);
310 meanradius+=radius;
311 counter++;
312 //}
c1076715 313
ac6e04fc 314 if (radius<2*kHeight*tan(theta+kMaxOmega)*3/4)
eb1ee126 315 {
ac6e04fc 316
317 if(phi==0)
318 {
319 //printf("Radius: %f, Max Radius: %f\n",radius,2*kHeight*tan(theta+kMaxOmega)*3/4);
320 //printf("Loaded digit %d with coordinates x:%f, y%f\n",dig,x,y);
321 //printf("Using digit %d, for theta %f\n",dig,theta);
322 }
323
324 counter1++;
325
326 l=kHeight/cos(theta);
327
328 //x=x*kCorr;
329 //y=y*kCorr;
330 /*if(SnellAngle(theta+omega)<999)
331 {
332 //printf("(Angle)/(Snell angle):%f\n",(theta+omega)/SnellAngle(theta+omega));
333 x=x*(theta+omega)/SnellAngle(theta+omega);
334 y=y*(theta+omega)/SnellAngle(theta+omega);
335 }
336 else
337 {
338 x=0;
339 y=0;
340 }*/
341
342 //main calculation
343
344 DigitsXY->Fill(x,y,(float) 1);
345
346 theta1=SnellAngle(theta)*1.5;
347
348 aux1=-y*sin(phi)+x*cos(phi);
349 aux2=y*cos(phi)+x*sin(phi);
350 aux3=( TMath::Power(aux1,2)+TMath::Power(cos(theta1)*aux2 ,2))/TMath::Power(sin(theta1)*aux2+l,2);
351 omega=atan(sqrt(aux3));
352
353 //omega is distorted, theta1 is distorted
354
355 if(InvSnellAngle(theta+omega)<999)
356 {
357 omega1=InvSnellAngle(omega+theta1) - theta;
358 //theta1=InvSnellAngle(omega+theta) - omega1;
359 //omega1=kCorr*omega;
360
361 kCorr=InvSnellAngle(omega+theta)/(omega+theta);
362 theta1=kCorr*theta/1.4;
363 //if(phi==0)
364 //printf("Omega:%f Theta:%f Omega1:%f Theta1:%f ISA(o+t):%f ISA(t):%f\n",omega*180/kPi,theta*180/kPi,omega1*180/kPi,theta1*180/kPi,InvSnellAngle(omega+theta)*180/kPi,InvSnellAngle(theta)*180/kPi);
365 }
366 else
367 {
368 omega1=0;
369 theta1=0;
370 }
371
372 //printf("Omega:%f\n",omega);
373
374
375 //if(SnellAngle(theta+omega)<999)
376 //printf("(Angle)/(Snell angle):%f\n",(theta+omega)/SnellAngle(theta+omega));
377 if(theta==0 && phi==0)
378 {
379 //printf("Omega: %f Corrected Omega: %f\n",omega, omega/kCorr);
380 //omega=omega/kCorr;
381 }
382
383 //cout<<"\ni="<<i<<" theta="<<Int_t(2*theta*dimension/kPi)<<" phi="<<Int_t(2*phi*dimension/kPi)<<" omega="<<Int_t(2*omega*dimension/kPi)<<endl<<endl;
384 //{Int_t lixo;cin>>lixo;}
385 if(omega1<kMaxOmega && omega1>kMinOmega)
386 {
387 //printf("Omega found:%f\n",omega);
388 omega1=omega1-kMinOmega;
389
390 //printf("Omega: %f Theta: %3.1f Phi:%3.1f\n",omega, theta*180/kPi, phi*180/kPi);
391
392 bintheta=theta1*kDimensionTheta/kMaxTheta;
393 binphi=phi*kDimensionPhi/kMaxPhi;
394 binomega=omega1*kDimensionOmega/(kMaxOmega-kMinOmega);
395
396 if(Int_t(bintheta+0.5)==Int_t(bintheta))
397 inttheta=Int_t(bintheta);
398 else
399 inttheta=Int_t(bintheta+0.5);
400
401 if(Int_t(binomega+0.5)==Int_t(binomega))
402 intomega=Int_t(binomega);
403 else
404 intomega=Int_t(binomega+0.5);
405
406 if(Int_t(binphi+0.5)==Int_t(binphi))
407 intphi=Int_t(binphi);
408 else
409 intphi=Int_t(binphi+0.5);
410
411 //printf("Point added at %d %d %d\n",inttheta,intphi,intomega);
412 point[inttheta][intphi][intomega]+=1;
413 //printf("Omega stored:%d\n",intomega);
414 Points->Fill(inttheta,intphi,intomega,(float) 1);
415 ThetaPhi->Fill(inttheta,intphi,(float) 1);
416 OmegaTheta->Fill(inttheta,intomega,(float) 1);
417 OmegaPhi->Fill(intphi,intomega,(float) 1);
418 //printf("Filling at %d %d %d\n",Int_t(theta*kDimensionTheta/kMaxTheta),Int_t(phi*kDimensionPhi/kMaxPhi),Int_t(omega*kDimensionOmega/kMaxOmega));
419 }
420 //if(omega<kMaxOmega)point[Int_t(theta)][Int_t(phi)][Int_t(omega)]+=1;
eb1ee126 421 }
c1076715 422 }
ac6e04fc 423 }
c1076715 424 }
ac6e04fc 425 //printf("Used %d digits for theta %3.1f\n",counter1, theta*180/kPi);
426 }
427
428 meanradius=meanradius/counter;
429 printf("Mean radius:%f, counter:%d\n",meanradius,counter);
430 rechit[5]=meanradius;
431 printf("Used %d digits\n",counter1);
432 //printf("\n");
433
434 if(nev<20)
435 {
436 if(nev==0)
437 {
438 fc1->cd(1);
439 Points->Draw();
440 fc1->cd(2);
441 ThetaPhi->Draw();
442 fc1->cd(3);
443 OmegaTheta->Draw();
444 fc1->cd(4);
445 OmegaPhi->Draw();
446 fc3->cd();
447 DigitsXY->Draw();
448 }
449 else
450 {
451 //fc1->cd(1);
452 //Points->Draw("same");
453 //fc1->cd(2);
454 //ThetaPhi->Draw("same");
455 //fc1->cd(3);
456 //OmegaTheta->Draw("same");
457 //fc1->cd(4);
458 //OmegaPhi->Draw("same");
459 }
460 }
461
c1076715 462
c1076715 463 //SPOT execute twice
ceccff49 464 for(Int_t s=0;s<kSpot;s++)
c1076715 465 {
ceccff49 466 printf(" Applying Spot algorithm, pass %d\n", s);
467
c1076715 468 //buffer copy
3a3df9e3 469 for(i=0;i<=kDimensionTheta;i++)
ceccff49 470 {
471 for(j=0;j<=kDimensionPhi;j++)
472 {
473 for(k=0;k<=kDimensionOmega;k++)
474 {
475 point1[i][j][k]=point[i][j][k];
476 }
477 }
478 }
479
c1076715 480 //SPOT algorithm
ac6e04fc 481 for(i=1;i<kDimensionTheta-1;i++)
ceccff49 482 {
ac6e04fc 483 for(j=1;j<kDimensionPhi-1;j++)
c1076715 484 {
ac6e04fc 485 for(k=1;k<kDimensionOmega-1;k++)
c1076715 486 {
ceccff49 487 if((point[i][k][j]>point[i-1][k][j])&&(point[i][k][j]>point[i+1][k][j])&&
488 (point[i][k][j]>point[i][k-1][j])&&(point[i][k][j]>point[i][k+1][j])&&
489 (point[i][k][j]>point[i][k][j-1])&&(point[i][k][j]>point[i][k][j+1]))
490 {
491 //cout<<"SPOT"<<endl;
492 //Execute SPOT on point
493 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]));
494 point1[i-1][k][j]=Int_t(SPOTp*point[i-1][k][j]);
495 point1[i+1][k][j]=Int_t(SPOTp*point[i+1][k][j]);
496 point1[i][k-1][j]=Int_t(SPOTp*point[i][k-1][j]);
497 point1[i][k+1][j]=Int_t(SPOTp*point[i][k+1][j]);
498 point1[i][k][j-1]=Int_t(SPOTp*point[i][k][j-1]);
499 point1[i][k][j+1]=Int_t(SPOTp*point[i][k][j+1]);
500 }
c1076715 501 }
502 }
ceccff49 503 }
504
c1076715 505 //copy from buffer copy
ac6e04fc 506 counter1=0;
3a3df9e3 507 for(i=1;i<kDimensionTheta;i++)
ceccff49 508 {
509 for(j=1;j<kDimensionPhi;j++)
510 {
511 for(k=1;k<kDimensionOmega;k++)
512 {
513 point[i][j][k]=point1[i][j][k];
ac6e04fc 514 if(nev<20)
515 {
516 if(s==kSpot-1)
517 {
518 if(point1[i][j][k] != 0)
519 {
520 SpotPoints->Fill(i,j,k,(float) point1[i][j][k]);
521 //printf("Random number %f\n",random->Rndm(2));
522 //if(random->Rndm() < .2)
523 //{
524 SpotThetaPhi->Fill(i,j,(float) point1[i][j][k]);
525 SpotOmegaTheta->Fill(i,k,(float) point1[i][j][k]);
526 SpotOmegaPhi->Fill(j,k,(float) point1[i][j][k]);
527 counter1++;
528 //}
529 //printf("Filling at %d %d %d value %f\n",i,j,k,(float) point1[i][j][k]);
530 }
531 }
532 }
ceccff49 533 //if(point1[i][j][k] != 0)
534 //printf("Last transfer point: %d, point1, %d\n",point[i][j][k],point1[i][j][k]);
535 }
536 }
537 }
538 }
c1076715 539
ac6e04fc 540 //printf("Filled %d cells\n",counter1);
541
542 if(nev<20)
543 {
544 if(nev==0)
545 {
546 fc2->cd(1);
547 SpotPoints->Draw();
548 fc2->cd(2);
549 SpotThetaPhi->Draw();
550 fc2->cd(3);
551 SpotOmegaTheta->Draw();
552 fc2->cd(4);
553 SpotOmegaPhi->Draw();
554 }
555 else
556 {
557 //fc2->cd(1);
558 //SpotPoints->Draw("same");
559 //fc2->cd(2);
560 //SpotThetaPhi->Draw("same");
561 //fc2->cd(3);
562 //SpotOmegaTheta->Draw("same");
563 //fc2->cd(4);
564 //SpotOmegaPhi->Draw("same");
565 }
566 }
567
c1076715 568
569 //Identification is equivalent to maximum determination
570 max=0;maxi=0;maxj=0;maxk=0;
571
ceccff49 572 printf(" Proceeding to identification");
c1076715 573
ac6e04fc 574 for(i=0;i<kDimensionTheta;i++)
575 for(j=0;j<kDimensionPhi;j++)
576 for(k=0;k<kDimensionOmega;k++)
ceccff49 577 if(point[i][j][k]>max)
578 {
579 //cout<<"maxi="<<i*90/dimension<<" maxj="<<j*90/dimension<<" maxk="<<k*kMaxOmega/dimension*180/kPi<<" max="<<max<<endl;
580 maxi=i;maxj=j;maxk=k;
581 max=point[i][j][k];
582 printf(".");
ac6e04fc 583 //printf("Max Omega %d, Max Theta %d, Max Phi %d (%d counts)\n",maxk,maxi,maxj,max);
ceccff49 584 }
585 printf("\n");
c1076715 586
ac6e04fc 587 Float_t FinalOmega = maxk*(kMaxOmega-kMinOmega)/kDimensionOmega;
588 Float_t FinalTheta = maxi*kMaxTheta/kDimensionTheta;
589 Float_t FinalPhi = maxj*kMaxPhi/kDimensionPhi;
eb1ee126 590
ac6e04fc 591 FinalOmega += kMinOmega;
eb1ee126 592
3a3df9e3 593 //printf("Detected angle for height %3.1f and for center %3.1f %3.1f:%f\n",h,cx,cy,maxk*kPi/(kDimensionTheta*4));
ac6e04fc 594 printf(" Indentified angles: cerenkov - %f, theta - %3.1f, phi - %3.1f (%f activation)\n", FinalOmega, FinalTheta*180/kPi, FinalPhi*180/kPi, max);
3a3df9e3 595 //printf("Detected angle for height %3.1f and for center %3.1f %3.1f:%f\n",kHeight,cx,cy,maxk);
c1076715 596
c1076715 597 //fscanf(omegas,"%f",&realomega);
598 //fscanf(thetas,"%f",&realtheta);
599 //printf("Real Omega: %f",realomega);
3a3df9e3 600 //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;
c1076715 601
3a3df9e3 602 //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));
c1076715 603
604 /*for(j=0;j<np;j++)
3a3df9e3 605 pointpp(maxj*90/kDimensionTheta,maxi*90/kDimensionPhi,maxk*kMaxOmega/kDimensionOmega*180/kPi,cx,cy);//Generates a point on the elipse*/
c1076715 606
607
608 //Start filling rec. hits
609
ac6e04fc 610 rechit[0] = FinalTheta;
611 rechit[1] = 90*kPi/180 + FinalPhi;
612 rechit[2] = FinalOmega;
c1076715 613 rechit[3] = cx;
614 rechit[4] = cy;
ac6e04fc 615
616 //CreatePoints(FinalTheta, 270*kPi/180 + FinalPhi, FinalOmega, kHeight);
617
c1076715 618 //printf ("track %d, theta %f, phi %f, omega %f\n\n\n",track,rechit[0],rechit[1],rechit[2]);
619
620 // fill rechits
4a5c8776 621 pRICH->AddRecHit3D(nch-1,rechit);
ac6e04fc 622 //printf("rechit %f %f %f %f %f\n",rechit[0],rechit[1],rechit[2],rechit[3],rechit[4]);
ceccff49 623 //printf("Chamber:%d",nch);
c1076715 624 }
625 //printf("\n\n\n\n");
626 gAlice->TreeR()->Fill();
c1076715 627 TClonesArray *fRec;
237c933d 628 for (i=0;i<kNCH;i++) {
4a5c8776 629 fRec=pRICH->RecHitsAddress3D(i);
c1076715 630 int ndig=fRec->GetEntriesFast();
ac6e04fc 631 printf ("Chamber %d, rings %d\n",i+1,ndig);
c1076715 632 }
4a5c8776 633 pRICH->ResetRecHits3D();
ac6e04fc 634
635 free_i3tensor(point,0,kDimensionTheta,0,kDimensionPhi,0,kDimensionOmega);
636 free_i3tensor(point1,0,kDimensionTheta,0,kDimensionPhi,0,kDimensionOmega);
c1076715 637}
638
ac6e04fc 639
640
3a3df9e3 641Float_t AliRICHDetect:: Area(Float_t theta,Float_t omega)
c1076715 642{
237c933d 643
644//
645// Calculates area of an ellipse for given incidence angles
646
647
c1076715 648 Float_t area;
3a3df9e3 649 const Float_t kHeight=9.25; //Distance from Radiator to Pads in pads
c1076715 650
00df6e79 651 area=TMath::Pi()*TMath::Power(kHeight*tan(omega),2)/TMath::Power(TMath::Power(cos(theta),2)-TMath::Power(tan(omega)*sin(theta),2),3/2);
c1076715 652
653 return (area);
654}
655
c1076715 656
ac6e04fc 657Int_t ***AliRICHDetect::i3tensor(long nrl, long nrh, long ncl, long nch, long ndl, long ndh)
658// allocate a Int_t 3tensor with range t[nrl..nrh][ncl..nch][ndl..ndh]
659{
660 long i,j,nrow=nrh-nrl+1,ncol=nch-ncl+1,ndep=ndh-ndl+1;
661 Int_t ***t;
662
663 int NR_END=1;
c1076715 664
ac6e04fc 665 // allocate pointers to pointers to rows
666 t=(Int_t ***) malloc((size_t)((nrow+NR_END)*sizeof(Int_t**)));
667 if (!t) printf("allocation failure 1 in f3tensor()");
668 t += NR_END;
669 t -= nrl;
670
671 // allocate pointers to rows and set pointers to them
672 t[nrl]=(Int_t **) malloc((size_t)((nrow*ncol+NR_END)*sizeof(Int_t*)));
673 if (!t[nrl]) printf("allocation failure 2 in f3tensor()");
674 t[nrl] += NR_END;
675 t[nrl] -= ncl;
c1076715 676
ac6e04fc 677 // allocate rows and set pointers to them
678 t[nrl][ncl]=(Int_t *) malloc((size_t)((nrow*ncol*ndep+NR_END)*sizeof(Int_t)));
679 if (!t[nrl][ncl]) printf("allocation failure 3 in f3tensor()");
680 t[nrl][ncl] += NR_END;
681 t[nrl][ncl] -= ndl;
c1076715 682
ac6e04fc 683 for(j=ncl+1;j<=nch;j++) t[nrl][j]=t[nrl][j-1]+ndep;
684 for(i=nrl+1;i<=nrh;i++) {
685 t[i]=t[i-1]+ncol;
686 t[i][ncl]=t[i-1][ncl]+ncol*ndep;
687 for(j=ncl+1;j<=nch;j++) t[i][j]=t[i][j-1]+ndep;
c1076715 688 }
ac6e04fc 689
690 // return pointer to array of pointers to rows
691 return t;
692}
693
694void AliRICHDetect::free_i3tensor(int ***t, long nrl, long nrh, long ncl, long nch,long ndl, long ndh)
695// free a Int_t f3tensor allocated by i3tensor()
696{
697 int NR_END=1;
698
699 free((char*) (t[nrl][ncl]+ndl-NR_END));
700 free((char*) (t[nrl]+ncl-NR_END));
701 free((char*) (t+nrl-NR_END));
702}
703
704
705Float_t AliRICHDetect:: SnellAngle(Float_t iangle)
706{
707
708// Compute the Snell angle
709
710 Float_t nfreon = 1.295;
711 Float_t nquartz = 1.585;
712 Float_t ngas = 1;
713
714 Float_t sinrangle;
715 Float_t rangle;
716 Float_t a1, a2;
717
718 a1=nfreon/nquartz;
719 a2=nquartz/ngas;
720
721 sinrangle = a1*a2*sin(iangle);
722
723 if(sinrangle>1.) {
724 rangle = 999.;
725 return rangle;
726 }
727
728 rangle = asin(sinrangle);
729 return rangle;
730}
731
732Float_t AliRICHDetect:: InvSnellAngle(Float_t rangle)
733{
734
735// Compute the inverse Snell angle
c1076715 736
ac6e04fc 737 Float_t nfreon = 1.295;
738 Float_t nquartz = 1.585;
739 Float_t ngas = 1;
c1076715 740
ac6e04fc 741 Float_t siniangle;
742 Float_t iangle;
743 Float_t a1,a2;
c1076715 744
ac6e04fc 745 a1=nfreon/nquartz;
746 a2=nquartz/ngas;
c1076715 747
ac6e04fc 748 siniangle = sin(rangle)/(a1*a2);
749 iangle = asin(siniangle);
750
751 if(siniangle>1.) {
752 iangle = 999.;
753 return iangle;
754 }
755
756 iangle = asin(siniangle);
757 return iangle;
758}
c1076715 759
760
ac6e04fc 761
762//________________________________________________________________________________
763void AliRICHDetect::CreatePoints(Float_t theta, Float_t phi, Float_t omega, Float_t h)
764{
765
766 // Create points along the ellipse equation
767
768 Int_t s1,s2;
769 Float_t fiducial=h*TMath::Tan(omega+theta), l=h/TMath::Cos(theta), xtrial, y=0, c0, c1, c2;
770 //TRandom *random=new TRandom();
771
772 static TH2F *REllipse = new TH2F("REllipse","Reconstructed ellipses",150,-25,25,150,-25,25);
773
774 for(Float_t i=0;i<1000;i++)
775 {
776
777 Float_t counter=0;
778
779 c0=0;c1=0;c2=0;
780 while((c1*c1-4*c2*c0)<=0 && counter<1000)
781 {
782 //Choose which side to go...
783 if(i>250 && i<750) s1=1;
784 //if (gRandom->Rndm(1)>.5) s1=1;
785 else s1=-1;
786 //printf("s1:%d\n",s1);
787 //Trial a y
788 y=s1*i*gRandom->Rndm(Int_t(fiducial/50));
789 //printf("Fiducial %f for omega:%f theta:%f phi:%f\n",fiducial,omega,theta,fphi);
790 Float_t alfa1=theta;
791 Float_t theta1=phi;
792 Float_t omega1=omega;
793
794 //Solve the eq for a trial x
795 c0=-TMath::Power(y*TMath::Cos(alfa1)*TMath::Cos(theta1),2)-TMath::Power(y*TMath::Sin(alfa1),2)+TMath::Power(l*TMath::Tan(omega1),2)+2*l*y*TMath::Cos(alfa1)*TMath::Sin(theta1)*TMath::Power(TMath::Tan(omega1),2)+TMath::Power(y*TMath::Cos(alfa1)*TMath::Sin(theta1)*TMath::Tan(omega1),2);
796 c1=2*y*TMath::Cos(alfa1)*TMath::Sin(alfa1)-2*y*TMath::Cos(alfa1)*TMath::Power(TMath::Cos(theta1),2)*TMath::Sin(alfa1)+2*l*TMath::Sin(alfa1)*TMath::Sin(theta1)*TMath::Power(TMath::Tan(omega1),2)+2*y*TMath::Cos(alfa1)*TMath::Sin(alfa1)*TMath::Power(TMath::Sin(theta1),2)*TMath::Power(TMath::Tan(omega1),2);
797 c2=-TMath::Power(TMath::Cos(alfa1),2)-TMath::Power(TMath::Cos(theta1)*TMath::Sin(alfa1),2)+TMath::Power(TMath::Sin(alfa1)*TMath::Sin(theta1)*TMath::Tan(omega1),2);
798 //cout<<"Trial: y="<<y<<"c0="<<c0<<" c1="<<c1<<" c2="<<c2<<endl;
799 //printf("Result:%f\n\n",c1*c1-4*c2*c0);
800 //i+=.01;
801 counter +=1;
802 }
803
804 if (counter>=1000)
805 y=0;
806
807 //Choose which side to go...
808 //if(gRandom->Rndm(1)>.5) s=1;
809 //else s=-1;
810 if(i>500) s2=1;
811 //if (gRandom->Rndm(1)>.5) s2=1;
812 else s2=-1;
813 xtrial=(-c1+s2*TMath::Sqrt(c1*c1-4*c2*c0))/(2*c2);
814 //cout<<"x="<<xtrial<<" y="<<cy+y<<endl;
815 //printf("Coordinates: %f %f\n",xtrial,fCy+y);
816
817 REllipse->Fill(xtrial,y);
818
819 //printf("Coordinates: %f %f %f\n",vectorGlob[0],vectorGlob[1],vectorGlob[2]);
820 }
821
822 fc3->cd(2);
823 REllipse->Draw();
824}