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[u/mrichter/AliRoot.git] / PHOS / AliPHOSEmcRecPoint.cxx
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d15a28e7 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
b2a60966 16/* $Id$ */
17
d15a28e7 18//_________________________________________________________________________
b2a60966 19// RecPoint implementation for PHOS-EMC
20// An EmcRecPoint is a cluster of digits
baef0810 21//*--
b2a60966 22//*-- Author: Dmitri Peressounko (RRC KI & SUBATECH)
23
d15a28e7 24
25// --- ROOT system ---
9f616d61 26#include "TPad.h"
27#include "TH2.h"
d15a28e7 28#include "TMath.h"
9f616d61 29#include "TCanvas.h"
d15a28e7 30
31// --- Standard library ---
32
d15a28e7 33// --- AliRoot header files ---
34
a6eedfad 35 #include "AliGenerator.h"
d15a28e7 36#include "AliPHOSGeometry.h"
37#include "AliPHOSEmcRecPoint.h"
38#include "AliRun.h"
7b7c1533 39#include "AliPHOSGetter.h"
d15a28e7 40
41ClassImp(AliPHOSEmcRecPoint)
42
43//____________________________________________________________________________
7932f811 44AliPHOSEmcRecPoint::AliPHOSEmcRecPoint() : AliPHOSRecPoint()
d15a28e7 45{
46 // ctor
47
48 fMulDigit = 0 ;
49 fAmp = 0. ;
7932f811 50 fCoreEnergy = 0 ;
51 fEnergyList = 0 ;
9688c1dd 52 fTime = -1. ;
a6eedfad 53 fLocPos.SetX(1000000.) ; //Local position should be evaluated
7b7c1533 54
83974468 55}
56
57//____________________________________________________________________________
73a68ccb 58AliPHOSEmcRecPoint::AliPHOSEmcRecPoint(const char * opt) : AliPHOSRecPoint(opt)
59{
60 // ctor
61
62 fMulDigit = 0 ;
63 fAmp = 0. ;
64 fCoreEnergy = 0 ;
65 fEnergyList = 0 ;
66 fTime = -1. ;
67 fLocPos.SetX(1000000.) ; //Local position should be evaluated
68
69}
70
71//____________________________________________________________________________
83974468 72AliPHOSEmcRecPoint::~AliPHOSEmcRecPoint()
73{
88714635 74 // dtor
a4e98857 75
83974468 76 if ( fEnergyList )
77 delete[] fEnergyList ;
d15a28e7 78}
79
9f616d61 80//____________________________________________________________________________
83974468 81void AliPHOSEmcRecPoint::AddDigit(AliPHOSDigit & digit, Float_t Energy)
d15a28e7 82{
b2a60966 83 // Adds a digit to the RecPoint
a4e98857 84 // and accumulates the total amplitude and the multiplicity
d15a28e7 85
7932f811 86 if(fEnergyList == 0)
87 fEnergyList = new Float_t[fMaxDigit];
88
d15a28e7 89 if ( fMulDigit >= fMaxDigit ) { // increase the size of the lists
9f616d61 90 fMaxDigit*=2 ;
83974468 91 Int_t * tempo = new ( Int_t[fMaxDigit] ) ;
9f616d61 92 Float_t * tempoE = new ( Float_t[fMaxDigit] ) ;
93
94 Int_t index ;
d15a28e7 95 for ( index = 0 ; index < fMulDigit ; index++ ){
83974468 96 tempo[index] = fDigitsList[index] ;
d15a28e7 97 tempoE[index] = fEnergyList[index] ;
98 }
99
9f616d61 100 delete [] fDigitsList ;
83974468 101 fDigitsList = new ( Int_t[fMaxDigit] ) ;
9f616d61 102
103 delete [] fEnergyList ;
104 fEnergyList = new ( Float_t[fMaxDigit] ) ;
105
106 for ( index = 0 ; index < fMulDigit ; index++ ){
107 fDigitsList[index] = tempo[index] ;
108 fEnergyList[index] = tempoE[index] ;
109 }
110
111 delete [] tempo ;
112 delete [] tempoE ;
113 } // if
d15a28e7 114
83974468 115 fDigitsList[fMulDigit] = digit.GetIndexInList() ;
116 fEnergyList[fMulDigit] = Energy ;
117 fMulDigit++ ;
d15a28e7 118 fAmp += Energy ;
7932f811 119
120 EvalPHOSMod(&digit) ;
d15a28e7 121}
122
123//____________________________________________________________________________
ad8cfaf4 124Bool_t AliPHOSEmcRecPoint::AreNeighbours(AliPHOSDigit * digit1, AliPHOSDigit * digit2 ) const
d15a28e7 125{
a4e98857 126 // Tells if (true) or not (false) two digits are neighbors
d15a28e7 127
128 Bool_t aren = kFALSE ;
129
7b7c1533 130 AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
131 AliPHOSGeometry * phosgeom = (AliPHOSGeometry*)gime->PHOSGeometry();
132
d15a28e7 133 Int_t relid1[4] ;
92862013 134 phosgeom->AbsToRelNumbering(digit1->GetId(), relid1) ;
d15a28e7 135
136 Int_t relid2[4] ;
92862013 137 phosgeom->AbsToRelNumbering(digit2->GetId(), relid2) ;
d15a28e7 138
92862013 139 Int_t rowdiff = TMath::Abs( relid1[2] - relid2[2] ) ;
140 Int_t coldiff = TMath::Abs( relid1[3] - relid2[3] ) ;
d15a28e7 141
92862013 142 if (( coldiff <= 1 ) && ( rowdiff <= 1 ) && (coldiff + rowdiff > 0))
d15a28e7 143 aren = kTRUE ;
144
145 return aren ;
146}
147
148//____________________________________________________________________________
2a941f4e 149Int_t AliPHOSEmcRecPoint::Compare(const TObject * obj) const
d15a28e7 150{
b2a60966 151 // Compares two RecPoints according to their position in the PHOS modules
152
7932f811 153 Float_t delta = 1 ; //Width of "Sorting row". If you changibg this
154 //value (what is senseless) change as vell delta in
155 //AliPHOSTrackSegmentMakerv* and other RecPoints...
d15a28e7 156 Int_t rv ;
157
158 AliPHOSEmcRecPoint * clu = (AliPHOSEmcRecPoint *)obj ;
159
160
ad8cfaf4 161 Int_t phosmod1 = GetPHOSMod() ;
92862013 162 Int_t phosmod2 = clu->GetPHOSMod() ;
d15a28e7 163
92862013 164 TVector3 locpos1;
7932f811 165 GetLocalPosition(locpos1) ;
92862013 166 TVector3 locpos2;
167 clu->GetLocalPosition(locpos2) ;
d15a28e7 168
92862013 169 if(phosmod1 == phosmod2 ) {
7932f811 170 Int_t rowdif = (Int_t)TMath::Ceil(locpos1.X()/delta)-(Int_t)TMath::Ceil(locpos2.X()/delta) ;
d15a28e7 171 if (rowdif> 0)
7932f811 172 rv = 1 ;
d15a28e7 173 else if(rowdif < 0)
7932f811 174 rv = -1 ;
92862013 175 else if(locpos1.Z()>locpos2.Z())
d15a28e7 176 rv = -1 ;
177 else
178 rv = 1 ;
179 }
180
181 else {
92862013 182 if(phosmod1 < phosmod2 )
d15a28e7 183 rv = -1 ;
184 else
185 rv = 1 ;
186 }
187
188 return rv ;
189}
9f616d61 190//______________________________________________________________________________
baef0810 191void AliPHOSEmcRecPoint::ExecuteEvent(Int_t event, Int_t px, Int_t py) const
9f616d61 192{
9f616d61 193
9688c1dd 194 // Execute action corresponding to one event
195 // This member function is called when a AliPHOSRecPoint is clicked with the locator
196 //
197 // If Left button is clicked on AliPHOSRecPoint, the digits are switched on
198 // and switched off when the mouse button is released.
199
200
201 AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
202 if(!gime) return ;
203 AliPHOSGeometry * phosgeom = (AliPHOSGeometry*)gime->PHOSGeometry();
83974468 204
9688c1dd 205 static TGraph * digitgraph = 0 ;
83974468 206
9688c1dd 207 if (!gPad->IsEditable()) return;
83974468 208
9688c1dd 209 TH2F * histo = 0 ;
210 TCanvas * histocanvas ;
211
afa51c4e 212 const TClonesArray * digits = gime->Digits() ;
9688c1dd 213
214 switch (event) {
83974468 215
9688c1dd 216 case kButton1Down: {
217 AliPHOSDigit * digit ;
218 Int_t iDigit;
219 Int_t relid[4] ;
83974468 220
9688c1dd 221 const Int_t kMulDigit = AliPHOSEmcRecPoint::GetDigitsMultiplicity() ;
222 Float_t * xi = new Float_t[kMulDigit] ;
223 Float_t * zi = new Float_t[kMulDigit] ;
83974468 224
9688c1dd 225 // create the histogram for the single cluster
226 // 1. gets histogram boundaries
227 Float_t ximax = -999. ;
228 Float_t zimax = -999. ;
229 Float_t ximin = 999. ;
230 Float_t zimin = 999. ;
83974468 231
9688c1dd 232 for(iDigit=0; iDigit<kMulDigit; iDigit++) {
233 digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ;
234 phosgeom->AbsToRelNumbering(digit->GetId(), relid) ;
235 phosgeom->RelPosInModule(relid, xi[iDigit], zi[iDigit]);
236 if ( xi[iDigit] > ximax )
237 ximax = xi[iDigit] ;
238 if ( xi[iDigit] < ximin )
239 ximin = xi[iDigit] ;
240 if ( zi[iDigit] > zimax )
241 zimax = zi[iDigit] ;
242 if ( zi[iDigit] < zimin )
243 zimin = zi[iDigit] ;
244 }
245 ximax += phosgeom->GetCrystalSize(0) / 2. ;
246 zimax += phosgeom->GetCrystalSize(2) / 2. ;
247 ximin -= phosgeom->GetCrystalSize(0) / 2. ;
248 zimin -= phosgeom->GetCrystalSize(2) / 2. ;
249 Int_t xdim = (int)( (ximax - ximin ) / phosgeom->GetCrystalSize(0) + 0.5 ) ;
250 Int_t zdim = (int)( (zimax - zimin ) / phosgeom->GetCrystalSize(2) + 0.5 ) ;
83974468 251
9688c1dd 252 // 2. gets the histogram title
83974468 253
9688c1dd 254 Text_t title[100] ;
255 sprintf(title,"Energy=%1.2f GeV ; Digits ; %d ", GetEnergy(), GetDigitsMultiplicity()) ;
83974468 256
9688c1dd 257 if (!histo) {
258 delete histo ;
259 histo = 0 ;
260 }
261 histo = new TH2F("cluster3D", title, xdim, ximin, ximax, zdim, zimin, zimax) ;
83974468 262
9688c1dd 263 Float_t x, z ;
264 for(iDigit=0; iDigit<kMulDigit; iDigit++) {
265 digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ;
266 phosgeom->AbsToRelNumbering(digit->GetId(), relid) ;
267 phosgeom->RelPosInModule(relid, x, z);
268 histo->Fill(x, z, fEnergyList[iDigit] ) ;
269 }
83974468 270
9688c1dd 271 if (!digitgraph) {
272 digitgraph = new TGraph(kMulDigit,xi,zi);
273 digitgraph-> SetMarkerStyle(5) ;
274 digitgraph-> SetMarkerSize(1.) ;
275 digitgraph-> SetMarkerColor(1) ;
276 digitgraph-> Paint("P") ;
277 }
83974468 278
9688c1dd 279 // Print() ;
280 histocanvas = new TCanvas("cluster", "a single cluster", 600, 500) ;
281 histocanvas->Draw() ;
282 histo->Draw("lego1") ;
83974468 283
9688c1dd 284 delete[] xi ;
285 delete[] zi ;
83974468 286
9688c1dd 287 break;
288 }
83974468 289
9688c1dd 290 case kButton1Up:
291 if (digitgraph) {
292 delete digitgraph ;
293 digitgraph = 0 ;
294 }
295 break;
9f616d61 296
9688c1dd 297 }
9f616d61 298}
299
d15a28e7 300//____________________________________________________________________________
7932f811 301void AliPHOSEmcRecPoint::EvalDispersion(Float_t logWeight,TClonesArray * digits)
d15a28e7 302{
b2a60966 303 // Calculates the dispersion of the shower at the origine of the RecPoint
304
e5b16749 305 Float_t d = 0. ;
306 Float_t wtot = 0. ;
d15a28e7 307
d084d50d 308 Float_t x = 0.;
309 Float_t z = 0.;
d15a28e7 310
311 AliPHOSDigit * digit ;
7b7c1533 312
313 AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
314 AliPHOSGeometry * phosgeom = (AliPHOSGeometry*)gime->PHOSGeometry();
d15a28e7 315
e5b16749 316
317 // Calculates the center of gravity in the local PHOS-module coordinates
318
d15a28e7 319 Int_t iDigit;
e5b16749 320
321 for(iDigit=0; iDigit<fMulDigit; iDigit++) {
322 digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ;
323 Int_t relid[4] ;
324 Float_t xi ;
325 Float_t zi ;
326 phosgeom->AbsToRelNumbering(digit->GetId(), relid) ;
327 phosgeom->RelPosInModule(relid, xi, zi);
328 Float_t w = TMath::Max( 0., logWeight + TMath::Log( fEnergyList[iDigit] / fAmp ) ) ;
329 x += xi * w ;
330 z += zi * w ;
331 wtot += w ;
332 }
333 x /= wtot ;
334 z /= wtot ;
335
336
337// Calculates the dispersion in coordinates
338 wtot = 0.;
88714635 339 for(iDigit=0; iDigit < fMulDigit; iDigit++) {
7932f811 340 digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ;
d15a28e7 341 Int_t relid[4] ;
342 Float_t xi ;
343 Float_t zi ;
92862013 344 phosgeom->AbsToRelNumbering(digit->GetId(), relid) ;
345 phosgeom->RelPosInModule(relid, xi, zi);
7932f811 346 Float_t w = TMath::Max(0.,logWeight+TMath::Log(fEnergyList[iDigit]/fAmp ) ) ;
92862013 347 d += w*((xi-x)*(xi-x) + (zi-z)*(zi-z) ) ;
d15a28e7 348 wtot+=w ;
d084d50d 349
350
d15a28e7 351 }
e5b16749 352
7932f811 353
92862013 354 d /= wtot ;
d15a28e7 355
7932f811 356 fDispersion = TMath::Sqrt(d) ;
c63c49e9 357
d15a28e7 358}
fad3e5b9 359//______________________________________________________________________________
e5b16749 360void AliPHOSEmcRecPoint::EvalCoreEnergy(Float_t logWeight, TClonesArray * digits)
fad3e5b9 361{
a4e98857 362 // This function calculates energy in the core,
363 // i.e. within a radius rad = 3cm around the center. Beyond this radius
364 // in accordance with shower profile the energy deposition
fad3e5b9 365 // should be less than 2%
366
fad3e5b9 367 Float_t coreRadius = 3 ;
368
e5b16749 369 Float_t x = 0 ;
370 Float_t z = 0 ;
fad3e5b9 371
372 AliPHOSDigit * digit ;
7b7c1533 373
374 AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
375 AliPHOSGeometry * phosgeom = (AliPHOSGeometry*)gime->PHOSGeometry();
376
fad3e5b9 377 Int_t iDigit;
e5b16749 378
379// Calculates the center of gravity in the local PHOS-module coordinates
380 Float_t wtot = 0;
381 for(iDigit=0; iDigit<fMulDigit; iDigit++) {
382 digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ;
383 Int_t relid[4] ;
384 Float_t xi ;
385 Float_t zi ;
386 phosgeom->AbsToRelNumbering(digit->GetId(), relid) ;
387 phosgeom->RelPosInModule(relid, xi, zi);
388 Float_t w = TMath::Max( 0., logWeight + TMath::Log( fEnergyList[iDigit] / fAmp ) ) ;
389 x += xi * w ;
390 z += zi * w ;
391 wtot += w ;
392 }
393 x /= wtot ;
394 z /= wtot ;
395
396
fad3e5b9 397 for(iDigit=0; iDigit < fMulDigit; iDigit++) {
7932f811 398 digit = (AliPHOSDigit *) ( digits->At(fDigitsList[iDigit]) ) ;
fad3e5b9 399 Int_t relid[4] ;
400 Float_t xi ;
401 Float_t zi ;
402 phosgeom->AbsToRelNumbering(digit->GetId(), relid) ;
403 phosgeom->RelPosInModule(relid, xi, zi);
404 Float_t distance = TMath::Sqrt((xi-x)*(xi-x)+(zi-z)*(zi-z)) ;
405 if(distance < coreRadius)
7932f811 406 fCoreEnergy += fEnergyList[iDigit] ;
fad3e5b9 407 }
408
fad3e5b9 409}
d15a28e7 410
411//____________________________________________________________________________
7932f811 412void AliPHOSEmcRecPoint::EvalElipsAxis(Float_t logWeight,TClonesArray * digits)
d15a28e7 413{
b2a60966 414 // Calculates the axis of the shower ellipsoid
83974468 415
e8dbb96e 416 Double_t wtot = 0. ;
417 Double_t x = 0.;
418 Double_t z = 0.;
419 Double_t dxx = 0.;
420 Double_t dzz = 0.;
421 Double_t dxz = 0.;
d15a28e7 422
423 AliPHOSDigit * digit ;
7b7c1533 424
425 AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
426 AliPHOSGeometry * phosgeom = (AliPHOSGeometry*)gime->PHOSGeometry();
427
d15a28e7 428 Int_t iDigit;
429
e5b16749 430
d15a28e7 431 for(iDigit=0; iDigit<fMulDigit; iDigit++) {
7932f811 432 digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ;
d15a28e7 433 Int_t relid[4] ;
434 Float_t xi ;
435 Float_t zi ;
92862013 436 phosgeom->AbsToRelNumbering(digit->GetId(), relid) ;
437 phosgeom->RelPosInModule(relid, xi, zi);
7932f811 438 Double_t w = TMath::Max(0.,logWeight+TMath::Log(fEnergyList[iDigit]/fAmp ) ) ;
92862013 439 dxx += w * xi * xi ;
d15a28e7 440 x += w * xi ;
92862013 441 dzz += w * zi * zi ;
d15a28e7 442 z += w * zi ;
92862013 443 dxz += w * xi * zi ;
d15a28e7 444 wtot += w ;
445 }
92862013 446 dxx /= wtot ;
d15a28e7 447 x /= wtot ;
92862013 448 dxx -= x * x ;
449 dzz /= wtot ;
d15a28e7 450 z /= wtot ;
92862013 451 dzz -= z * z ;
452 dxz /= wtot ;
453 dxz -= x * z ;
d15a28e7 454
69183710 455// //Apply correction due to non-perpendicular incidence
456// Double_t CosX ;
457// Double_t CosZ ;
7b7c1533 458// AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
459// AliPHOSGeometry * phosgeom = (AliPHOSGeometry*)gime->PHOSGeometry();
460 // Double_t DistanceToIP= (Double_t ) phosgeom->GetIPtoCrystalSurface() ;
69183710 461
462// CosX = DistanceToIP/TMath::Sqrt(DistanceToIP*DistanceToIP+x*x) ;
463// CosZ = DistanceToIP/TMath::Sqrt(DistanceToIP*DistanceToIP+z*z) ;
464
465// dxx = dxx/(CosX*CosX) ;
466// dzz = dzz/(CosZ*CosZ) ;
467// dxz = dxz/(CosX*CosZ) ;
468
469
7932f811 470 fLambda[0] = 0.5 * (dxx + dzz) + TMath::Sqrt( 0.25 * (dxx - dzz) * (dxx - dzz) + dxz * dxz ) ;
471 if(fLambda[0] > 0)
472 fLambda[0] = TMath::Sqrt(fLambda[0]) ;
e8dbb96e 473
7932f811 474 fLambda[1] = 0.5 * (dxx + dzz) - TMath::Sqrt( 0.25 * (dxx - dzz) * (dxx - dzz) + dxz * dxz ) ;
475 if(fLambda[1] > 0) //To avoid exception if numerical errors lead to negative lambda.
476 fLambda[1] = TMath::Sqrt(fLambda[1]) ;
e8dbb96e 477 else
7932f811 478 fLambda[1]= 0. ;
d15a28e7 479}
480
481//____________________________________________________________________________
7932f811 482void AliPHOSEmcRecPoint::EvalAll(Float_t logWeight, TClonesArray * digits )
ad8cfaf4 483{
baef0810 484 // Evaluates all shower parameters
485
7932f811 486 AliPHOSRecPoint::EvalAll(logWeight,digits) ;
487 EvalLocalPosition(logWeight, digits) ;
488 EvalElipsAxis(logWeight, digits) ;
489 EvalDispersion(logWeight, digits) ;
e5b16749 490 EvalCoreEnergy(logWeight, digits);
a6eedfad 491 EvalTime(digits) ;
ad8cfaf4 492}
493//____________________________________________________________________________
7932f811 494void AliPHOSEmcRecPoint::EvalLocalPosition(Float_t logWeight, TClonesArray * digits)
b2a60966 495{
496 // Calculates the center of gravity in the local PHOS-module coordinates
b2a60966 497 Float_t wtot = 0. ;
498
499 Int_t relid[4] ;
500
501 Float_t x = 0. ;
502 Float_t z = 0. ;
503
504 AliPHOSDigit * digit ;
505
7b7c1533 506 AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
507 AliPHOSGeometry * phosgeom = (AliPHOSGeometry*)gime->PHOSGeometry();
b2a60966 508
509 Int_t iDigit;
510
b2a60966 511 for(iDigit=0; iDigit<fMulDigit; iDigit++) {
7932f811 512 digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ;
b2a60966 513
514 Float_t xi ;
515 Float_t zi ;
516 phosgeom->AbsToRelNumbering(digit->GetId(), relid) ;
517 phosgeom->RelPosInModule(relid, xi, zi);
7932f811 518 Float_t w = TMath::Max( 0., logWeight + TMath::Log( fEnergyList[iDigit] / fAmp ) ) ;
b2a60966 519 x += xi * w ;
520 z += zi * w ;
521 wtot += w ;
b2a60966 522
9ce1a8d9 523 }
69183710 524
525 x /= wtot ;
526 z /= wtot ;
ad8cfaf4 527
528 // Correction for the depth of the shower starting point (TDR p 127)
529 Float_t para = 0.925 ;
530 Float_t parb = 6.52 ;
531
1b799736 532 Float_t xo,yo,zo ; //Coordinates of the origin
533 gAlice->Generator()->GetOrigin(xo,yo,zo) ;
534
5830e1d9 535 Float_t phi = phosgeom->GetPHOSAngle(relid[0]) ;
1b799736 536
537 //Transform to the local ref.frame
538 Float_t xoL,yoL ;
539 xoL = xo*TMath::Cos(phi)-yo*TMath::Sin(phi) ;
540 yoL = xo*TMath::Sin(phi)+yo*TMath::Cos(phi) ;
541
fd84cb73 542 Float_t radius = phosgeom->GetIPtoCrystalSurface()-yoL;
1b799736 543
544 Float_t incidencephi = TMath::ATan((x-xoL ) / radius) ;
545 Float_t incidencetheta = TMath::ATan((z-zo) / radius) ;
ad8cfaf4 546
547 Float_t depthx = ( para * TMath::Log(fAmp) + parb ) * TMath::Sin(incidencephi) ;
548 Float_t depthz = ( para * TMath::Log(fAmp) + parb ) * TMath::Sin(incidencetheta) ;
ad8cfaf4 549
550 fLocPos.SetX(x - depthx) ;
b2a60966 551 fLocPos.SetY(0.) ;
ad8cfaf4 552 fLocPos.SetZ(z - depthz) ;
b2a60966 553
a6eedfad 554 fLocPosM = 0 ;
b2a60966 555}
556
557//____________________________________________________________________________
ad8cfaf4 558Float_t AliPHOSEmcRecPoint::GetMaximalEnergy(void) const
d15a28e7 559{
b2a60966 560 // Finds the maximum energy in the cluster
561
d15a28e7 562 Float_t menergy = 0. ;
563
564 Int_t iDigit;
565
566 for(iDigit=0; iDigit<fMulDigit; iDigit++) {
567
568 if(fEnergyList[iDigit] > menergy)
569 menergy = fEnergyList[iDigit] ;
570 }
571 return menergy ;
572}
573
574//____________________________________________________________________________
ad8cfaf4 575Int_t AliPHOSEmcRecPoint::GetMultiplicityAtLevel(const Float_t H) const
d15a28e7 576{
b2a60966 577 // Calculates the multiplicity of digits with energy larger than H*energy
578
d15a28e7 579 Int_t multipl = 0 ;
580 Int_t iDigit ;
581 for(iDigit=0; iDigit<fMulDigit; iDigit++) {
582
583 if(fEnergyList[iDigit] > H * fAmp)
584 multipl++ ;
585 }
586 return multipl ;
587}
588
589//____________________________________________________________________________
a0636361 590Int_t AliPHOSEmcRecPoint::GetNumberOfLocalMax( AliPHOSDigit ** maxAt, Float_t * maxAtEnergy,
7932f811 591 Float_t locMaxCut,TClonesArray * digits) const
d15a28e7 592{
b2a60966 593 // Calculates the number of local maxima in the cluster using fLocalMaxCut as the minimum
a4e98857 594 // energy difference between two local maxima
b2a60966 595
d15a28e7 596 AliPHOSDigit * digit ;
597 AliPHOSDigit * digitN ;
598
599
600 Int_t iDigitN ;
601 Int_t iDigit ;
602
7932f811 603 for(iDigit = 0; iDigit < fMulDigit; iDigit++)
a0636361 604 maxAt[iDigit] = (AliPHOSDigit*) digits->At(fDigitsList[iDigit]) ;
7932f811 605
d15a28e7 606
6ad0bfa0 607 for(iDigit = 0 ; iDigit < fMulDigit; iDigit++) {
a0636361 608 if(maxAt[iDigit]) {
609 digit = maxAt[iDigit] ;
83974468 610
6ad0bfa0 611 for(iDigitN = 0; iDigitN < fMulDigit; iDigitN++) {
7932f811 612 digitN = (AliPHOSDigit *) digits->At(fDigitsList[iDigitN]) ;
d15a28e7 613
9f616d61 614 if ( AreNeighbours(digit, digitN) ) {
d15a28e7 615 if (fEnergyList[iDigit] > fEnergyList[iDigitN] ) {
a0636361 616 maxAt[iDigitN] = 0 ;
6ad0bfa0 617 // but may be digit too is not local max ?
7932f811 618 if(fEnergyList[iDigit] < fEnergyList[iDigitN] + locMaxCut)
a0636361 619 maxAt[iDigit] = 0 ;
d15a28e7 620 }
621 else {
a0636361 622 maxAt[iDigit] = 0 ;
6ad0bfa0 623 // but may be digitN too is not local max ?
7932f811 624 if(fEnergyList[iDigit] > fEnergyList[iDigitN] - locMaxCut)
a0636361 625 maxAt[iDigitN] = 0 ;
d15a28e7 626 }
627 } // if Areneighbours
628 } // while digitN
629 } // slot not empty
630 } // while digit
631
632 iDigitN = 0 ;
6ad0bfa0 633 for(iDigit = 0; iDigit < fMulDigit; iDigit++) {
a0636361 634 if(maxAt[iDigit]){
d15a28e7 635 maxAt[iDigitN] = maxAt[iDigit] ;
9f616d61 636 maxAtEnergy[iDigitN] = fEnergyList[iDigit] ;
637 iDigitN++ ;
d15a28e7 638 }
639 }
640 return iDigitN ;
641}
9688c1dd 642//____________________________________________________________________________
643void AliPHOSEmcRecPoint::EvalTime(TClonesArray * digits){
644
645 Float_t maxE = 0;
646 Int_t maxAt = 0;
647 for(Int_t idig=0; idig < fMulDigit; idig++){
648 if(fEnergyList[idig] > maxE){
649 maxE = fEnergyList[idig] ;
650 maxAt = idig;
651 }
652 }
653 fTime = ((AliPHOSDigit*) digits->At(fDigitsList[maxAt]))->GetTime() ;
654
655}
d15a28e7 656//____________________________________________________________________________
657void AliPHOSEmcRecPoint::Print(Option_t * option)
658{
b2a60966 659 // Print the list of digits belonging to the cluster
660
21cd0c07 661 TString message ;
662 message = "AliPHOSEmcRecPoint:\n" ;
663 message += " digits # = " ;
664 Info("Print", message.Data()) ;
d15a28e7 665
d15a28e7 666 Int_t iDigit;
7932f811 667 for(iDigit=0; iDigit<fMulDigit; iDigit++)
21cd0c07 668 Info("Print", " %d ", fDigitsList[iDigit] ) ;
7932f811 669
21cd0c07 670 Info("Print", " Energies = ") ;
7932f811 671 for(iDigit=0; iDigit<fMulDigit; iDigit++)
21cd0c07 672 Info("Print", " %f ", fEnergyList[iDigit] ) ;
83974468 673
21cd0c07 674 Info("Print", " Primaries ") ;
bc68d12c 675 for(iDigit = 0;iDigit < fMulTrack; iDigit++)
21cd0c07 676 Info("Print", " %d ", fTracksList[iDigit]) ;
bc68d12c 677
21cd0c07 678 message = " Multiplicity = %d" ;
679 message += " Cluster Energy = %f" ;
680 message += " Number of primaries %d" ;
681 message += " Stored at position %d" ;
83974468 682
21cd0c07 683 Info("Print", message.Data(), fMulDigit, fAmp, fMulTrack,GetIndexInList() ) ;
d15a28e7 684}
88714635 685
7932f811 686