Moved MakePrimary to EMCRecPoint to rpduce correct order of primaries
[u/mrichter/AliRoot.git] / PHOS / AliPHOSEmcRecPoint.cxx
CommitLineData
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
702ab87e 18/* History of cvs commits:
19 *
20 * $Log$
c307c629 21 * Revision 1.58 2007/04/16 09:03:37 kharlov
22 * Incedent angle correction fixed
23 *
753b19cd 24 * Revision 1.57 2007/04/05 10:18:58 policheh
25 * Introduced distance to nearest bad crystal.
26 *
dce76bbb 27 * Revision 1.56 2007/03/06 06:47:28 kharlov
28 * DP:Possibility to use actual vertex position added
29 *
91daaf24 30 * Revision 1.55 2007/01/19 20:31:19 kharlov
31 * Improved formatting for Print()
32 *
6f766ada 33 * Revision 1.54 2006/08/28 10:01:56 kharlov
34 * Effective C++ warnings fixed (Timur Pocheptsov)
35 *
3663622c 36 * Revision 1.53 2005/12/20 14:28:47 hristov
37 * Additional protection
38 *
f33a3764 39 * Revision 1.52 2005/05/28 14:19:04 schutz
40 * Compilation warnings fixed by T.P.
41 *
702ab87e 42 */
43
d15a28e7 44//_________________________________________________________________________
b2a60966 45// RecPoint implementation for PHOS-EMC
46// An EmcRecPoint is a cluster of digits
baef0810 47//*--
b2a60966 48//*-- Author: Dmitri Peressounko (RRC KI & SUBATECH)
49
d15a28e7 50
51// --- ROOT system ---
9f616d61 52#include "TH2.h"
d15a28e7 53#include "TMath.h"
9f616d61 54#include "TCanvas.h"
55fe9d13 55#include "TGraph.h"
d15a28e7 56
57// --- Standard library ---
58
d15a28e7 59// --- AliRoot header files ---
351dd634 60#include "AliLog.h"
e957fea8 61#include "AliPHOSLoader.h"
88cb7938 62#include "AliGenerator.h"
d15a28e7 63#include "AliPHOSGeometry.h"
e957fea8 64#include "AliPHOSDigit.h"
d15a28e7 65#include "AliPHOSEmcRecPoint.h"
e957fea8 66
d15a28e7 67ClassImp(AliPHOSEmcRecPoint)
68
69//____________________________________________________________________________
3663622c 70AliPHOSEmcRecPoint::AliPHOSEmcRecPoint() :
71 AliPHOSRecPoint(),
72 fCoreEnergy(0.), fDispersion(0.),
73 fEnergyList(0), fTime(-1.), fNExMax(0),
74 fM2x(0.), fM2z(0.), fM3x(0.), fM4z(0.),
dce76bbb 75 fPhixe(0.), fDistToBadCrystal(-1),fDebug(0)
d15a28e7 76{
77 // ctor
d15a28e7 78 fMulDigit = 0 ;
79 fAmp = 0. ;
a6eedfad 80 fLocPos.SetX(1000000.) ; //Local position should be evaluated
83974468 81}
82
73a68ccb 83//____________________________________________________________________________
3663622c 84AliPHOSEmcRecPoint::AliPHOSEmcRecPoint(const char * opt) :
85 AliPHOSRecPoint(opt),
86 fCoreEnergy(0.), fDispersion(0.),
87 fEnergyList(0), fTime(-1.), fNExMax(0),
88 fM2x(0.), fM2z(0.), fM3x(0.), fM4z(0.),
dce76bbb 89 fPhixe(0.), fDistToBadCrystal(-1), fDebug(0)
73a68ccb 90{
91 // ctor
73a68ccb 92 fMulDigit = 0 ;
93 fAmp = 0. ;
73a68ccb 94 fLocPos.SetX(1000000.) ; //Local position should be evaluated
73a68ccb 95}
96
55fe9d13 97//____________________________________________________________________________
3663622c 98AliPHOSEmcRecPoint::AliPHOSEmcRecPoint(const AliPHOSEmcRecPoint & rp) :
99 AliPHOSRecPoint(rp),
100 fCoreEnergy(rp.fCoreEnergy), fDispersion(rp.fDispersion),
101 fEnergyList(0), fTime(rp.fTime), fNExMax(rp.fNExMax),
102 fM2x(rp.fM2x), fM2z(rp.fM2z), fM3x(rp.fM3x), fM4z(rp.fM4z),
dce76bbb 103 fPhixe(rp.fPhixe), fDistToBadCrystal(rp.fDistToBadCrystal), fDebug(rp.fDebug)
55fe9d13 104{
105 // cpy ctor
55fe9d13 106 fMulDigit = rp.fMulDigit ;
107 fAmp = rp.fAmp ;
55fe9d13 108 fEnergyList = new Float_t[rp.fMulDigit] ;
109 Int_t index ;
110 for(index = 0 ; index < fMulDigit ; index++)
111 fEnergyList[index] = rp.fEnergyList[index] ;
55fe9d13 112}
113
83974468 114//____________________________________________________________________________
115AliPHOSEmcRecPoint::~AliPHOSEmcRecPoint()
116{
88714635 117 // dtor
83974468 118 if ( fEnergyList )
119 delete[] fEnergyList ;
d15a28e7 120}
121
d15a28e7 122//____________________________________________________________________________
83974468 123void AliPHOSEmcRecPoint::AddDigit(AliPHOSDigit & digit, Float_t Energy)
d15a28e7 124{
b2a60966 125 // Adds a digit to the RecPoint
a4e98857 126 // and accumulates the total amplitude and the multiplicity
d15a28e7 127
7932f811 128 if(fEnergyList == 0)
129 fEnergyList = new Float_t[fMaxDigit];
130
d15a28e7 131 if ( fMulDigit >= fMaxDigit ) { // increase the size of the lists
9f616d61 132 fMaxDigit*=2 ;
0fbb8738 133 Int_t * tempo = new Int_t[fMaxDigit];
134 Float_t * tempoE = new Float_t[fMaxDigit];
9f616d61 135
136 Int_t index ;
d15a28e7 137 for ( index = 0 ; index < fMulDigit ; index++ ){
83974468 138 tempo[index] = fDigitsList[index] ;
d15a28e7 139 tempoE[index] = fEnergyList[index] ;
140 }
141
9f616d61 142 delete [] fDigitsList ;
0fbb8738 143 fDigitsList = new Int_t[fMaxDigit];
9f616d61 144
145 delete [] fEnergyList ;
0fbb8738 146 fEnergyList = new Float_t[fMaxDigit];
9f616d61 147
148 for ( index = 0 ; index < fMulDigit ; index++ ){
149 fDigitsList[index] = tempo[index] ;
150 fEnergyList[index] = tempoE[index] ;
151 }
152
153 delete [] tempo ;
154 delete [] tempoE ;
155 } // if
d15a28e7 156
83974468 157 fDigitsList[fMulDigit] = digit.GetIndexInList() ;
158 fEnergyList[fMulDigit] = Energy ;
159 fMulDigit++ ;
d15a28e7 160 fAmp += Energy ;
7932f811 161
162 EvalPHOSMod(&digit) ;
d15a28e7 163}
164
165//____________________________________________________________________________
ad8cfaf4 166Bool_t AliPHOSEmcRecPoint::AreNeighbours(AliPHOSDigit * digit1, AliPHOSDigit * digit2 ) const
d15a28e7 167{
a4e98857 168 // Tells if (true) or not (false) two digits are neighbors
d15a28e7 169
170 Bool_t aren = kFALSE ;
171
686b771f 172 AliPHOSGeometry * phosgeom = AliPHOSGeometry::GetInstance() ;
7b7c1533 173
d15a28e7 174 Int_t relid1[4] ;
92862013 175 phosgeom->AbsToRelNumbering(digit1->GetId(), relid1) ;
d15a28e7 176
177 Int_t relid2[4] ;
92862013 178 phosgeom->AbsToRelNumbering(digit2->GetId(), relid2) ;
d15a28e7 179
92862013 180 Int_t rowdiff = TMath::Abs( relid1[2] - relid2[2] ) ;
181 Int_t coldiff = TMath::Abs( relid1[3] - relid2[3] ) ;
d15a28e7 182
92862013 183 if (( coldiff <= 1 ) && ( rowdiff <= 1 ) && (coldiff + rowdiff > 0))
d15a28e7 184 aren = kTRUE ;
185
186 return aren ;
187}
188
189//____________________________________________________________________________
2a941f4e 190Int_t AliPHOSEmcRecPoint::Compare(const TObject * obj) const
d15a28e7 191{
b2a60966 192 // Compares two RecPoints according to their position in the PHOS modules
686b771f 193
194 const Float_t delta = 1 ; //Width of "Sorting row". If you changibg this
7932f811 195 //value (what is senseless) change as vell delta in
196 //AliPHOSTrackSegmentMakerv* and other RecPoints...
d15a28e7 197 Int_t rv ;
198
199 AliPHOSEmcRecPoint * clu = (AliPHOSEmcRecPoint *)obj ;
200
201
ad8cfaf4 202 Int_t phosmod1 = GetPHOSMod() ;
92862013 203 Int_t phosmod2 = clu->GetPHOSMod() ;
d15a28e7 204
92862013 205 TVector3 locpos1;
7932f811 206 GetLocalPosition(locpos1) ;
92862013 207 TVector3 locpos2;
208 clu->GetLocalPosition(locpos2) ;
d15a28e7 209
92862013 210 if(phosmod1 == phosmod2 ) {
7932f811 211 Int_t rowdif = (Int_t)TMath::Ceil(locpos1.X()/delta)-(Int_t)TMath::Ceil(locpos2.X()/delta) ;
d15a28e7 212 if (rowdif> 0)
7932f811 213 rv = 1 ;
d15a28e7 214 else if(rowdif < 0)
7932f811 215 rv = -1 ;
92862013 216 else if(locpos1.Z()>locpos2.Z())
d15a28e7 217 rv = -1 ;
218 else
219 rv = 1 ;
220 }
221
222 else {
92862013 223 if(phosmod1 < phosmod2 )
d15a28e7 224 rv = -1 ;
225 else
226 rv = 1 ;
227 }
228
229 return rv ;
230}
9f616d61 231//______________________________________________________________________________
702ab87e 232void AliPHOSEmcRecPoint::ExecuteEvent(Int_t event, Int_t, Int_t) /*const*/
9f616d61 233{
9f616d61 234
9688c1dd 235 // Execute action corresponding to one event
236 // This member function is called when a AliPHOSRecPoint is clicked with the locator
237 //
238 // If Left button is clicked on AliPHOSRecPoint, the digits are switched on
239 // and switched off when the mouse button is released.
240
88cb7938 241
686b771f 242 AliPHOSGeometry * phosgeom = AliPHOSGeometry::GetInstance();
83974468 243
9688c1dd 244 static TGraph * digitgraph = 0 ;
83974468 245
9688c1dd 246 if (!gPad->IsEditable()) return;
83974468 247
9688c1dd 248 TH2F * histo = 0 ;
249 TCanvas * histocanvas ;
250
88cb7938 251
252 //try to get run loader from default event folder
e191bb57 253 AliRunLoader* rn = AliRunLoader::GetRunLoader(AliConfig::GetDefaultEventFolderName());
88cb7938 254 if (rn == 0x0)
255 {
351dd634 256 AliError(Form("Cannot find Run Loader in Default Event Folder"));
88cb7938 257 return;
258 }
259 AliPHOSLoader* gime = dynamic_cast<AliPHOSLoader*>(rn->GetLoader("PHOSLoader"));
260 if (gime == 0x0)
261 {
351dd634 262 AliError(Form("Cannot find PHOS Loader from Run Loader"));
88cb7938 263 return;
264 }
265
266
afa51c4e 267 const TClonesArray * digits = gime->Digits() ;
9688c1dd 268
269 switch (event) {
83974468 270
9688c1dd 271 case kButton1Down: {
272 AliPHOSDigit * digit ;
273 Int_t iDigit;
274 Int_t relid[4] ;
83974468 275
9688c1dd 276 const Int_t kMulDigit = AliPHOSEmcRecPoint::GetDigitsMultiplicity() ;
277 Float_t * xi = new Float_t[kMulDigit] ;
278 Float_t * zi = new Float_t[kMulDigit] ;
83974468 279
9688c1dd 280 // create the histogram for the single cluster
281 // 1. gets histogram boundaries
282 Float_t ximax = -999. ;
283 Float_t zimax = -999. ;
284 Float_t ximin = 999. ;
285 Float_t zimin = 999. ;
83974468 286
9688c1dd 287 for(iDigit=0; iDigit<kMulDigit; iDigit++) {
288 digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ;
289 phosgeom->AbsToRelNumbering(digit->GetId(), relid) ;
290 phosgeom->RelPosInModule(relid, xi[iDigit], zi[iDigit]);
291 if ( xi[iDigit] > ximax )
292 ximax = xi[iDigit] ;
293 if ( xi[iDigit] < ximin )
294 ximin = xi[iDigit] ;
295 if ( zi[iDigit] > zimax )
296 zimax = zi[iDigit] ;
297 if ( zi[iDigit] < zimin )
298 zimin = zi[iDigit] ;
299 }
300 ximax += phosgeom->GetCrystalSize(0) / 2. ;
301 zimax += phosgeom->GetCrystalSize(2) / 2. ;
302 ximin -= phosgeom->GetCrystalSize(0) / 2. ;
303 zimin -= phosgeom->GetCrystalSize(2) / 2. ;
304 Int_t xdim = (int)( (ximax - ximin ) / phosgeom->GetCrystalSize(0) + 0.5 ) ;
305 Int_t zdim = (int)( (zimax - zimin ) / phosgeom->GetCrystalSize(2) + 0.5 ) ;
83974468 306
9688c1dd 307 // 2. gets the histogram title
83974468 308
9688c1dd 309 Text_t title[100] ;
310 sprintf(title,"Energy=%1.2f GeV ; Digits ; %d ", GetEnergy(), GetDigitsMultiplicity()) ;
83974468 311
9688c1dd 312 if (!histo) {
313 delete histo ;
314 histo = 0 ;
315 }
316 histo = new TH2F("cluster3D", title, xdim, ximin, ximax, zdim, zimin, zimax) ;
83974468 317
9688c1dd 318 Float_t x, z ;
319 for(iDigit=0; iDigit<kMulDigit; iDigit++) {
320 digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ;
321 phosgeom->AbsToRelNumbering(digit->GetId(), relid) ;
322 phosgeom->RelPosInModule(relid, x, z);
323 histo->Fill(x, z, fEnergyList[iDigit] ) ;
324 }
83974468 325
9688c1dd 326 if (!digitgraph) {
327 digitgraph = new TGraph(kMulDigit,xi,zi);
328 digitgraph-> SetMarkerStyle(5) ;
329 digitgraph-> SetMarkerSize(1.) ;
330 digitgraph-> SetMarkerColor(1) ;
331 digitgraph-> Paint("P") ;
332 }
83974468 333
9688c1dd 334 // Print() ;
335 histocanvas = new TCanvas("cluster", "a single cluster", 600, 500) ;
336 histocanvas->Draw() ;
337 histo->Draw("lego1") ;
83974468 338
9688c1dd 339 delete[] xi ;
340 delete[] zi ;
83974468 341
9688c1dd 342 break;
343 }
83974468 344
9688c1dd 345 case kButton1Up:
346 if (digitgraph) {
347 delete digitgraph ;
348 digitgraph = 0 ;
349 }
350 break;
9f616d61 351
9688c1dd 352 }
9f616d61 353}
354
d15a28e7 355//____________________________________________________________________________
91daaf24 356void AliPHOSEmcRecPoint::EvalDispersion(Float_t logWeight,TClonesArray * digits, TVector3 &vInc)
d15a28e7 357{
b2a60966 358 // Calculates the dispersion of the shower at the origine of the RecPoint
91daaf24 359 //DP: should we correct dispersion for non-perpendicular hit????????
360
e5b16749 361 Float_t d = 0. ;
362 Float_t wtot = 0. ;
d15a28e7 363
d084d50d 364 Float_t x = 0.;
365 Float_t z = 0.;
d15a28e7 366
367 AliPHOSDigit * digit ;
7b7c1533 368
686b771f 369 AliPHOSGeometry * phosgeom = AliPHOSGeometry::GetInstance();
e5b16749 370
371 // Calculates the center of gravity in the local PHOS-module coordinates
372
d15a28e7 373 Int_t iDigit;
e5b16749 374
375 for(iDigit=0; iDigit<fMulDigit; iDigit++) {
376 digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ;
377 Int_t relid[4] ;
378 Float_t xi ;
379 Float_t zi ;
380 phosgeom->AbsToRelNumbering(digit->GetId(), relid) ;
381 phosgeom->RelPosInModule(relid, xi, zi);
f33a3764 382 if (fAmp>0 && fEnergyList[iDigit]>0) {
383 Float_t w = TMath::Max( 0., logWeight + TMath::Log( fEnergyList[iDigit] / fAmp ) ) ;
384 x += xi * w ;
385 z += zi * w ;
386 wtot += w ;
387 }
388 else
389 AliError(Form("Wrong energy %f and/or amplitude %f\n", fEnergyList[iDigit], fAmp));
e5b16749 390 }
f33a3764 391 if (wtot>0) {
392 x /= wtot ;
393 z /= wtot ;
394 }
395 else
396 AliError(Form("Wrong weight %f\n", wtot));
e5b16749 397
398
399// Calculates the dispersion in coordinates
400 wtot = 0.;
88714635 401 for(iDigit=0; iDigit < fMulDigit; iDigit++) {
7932f811 402 digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ;
d15a28e7 403 Int_t relid[4] ;
404 Float_t xi ;
405 Float_t zi ;
92862013 406 phosgeom->AbsToRelNumbering(digit->GetId(), relid) ;
407 phosgeom->RelPosInModule(relid, xi, zi);
f33a3764 408 if (fAmp>0 && fEnergyList[iDigit]>0) {
409 Float_t w = TMath::Max(0.,logWeight+TMath::Log(fEnergyList[iDigit]/fAmp ) ) ;
410 d += w*((xi-x)*(xi-x) + (zi-z)*(zi-z) ) ;
411 wtot+=w ;
412 }
413 else
414 AliError(Form("Wrong energy %f and/or amplitude %f\n", fEnergyList[iDigit], fAmp));
d15a28e7 415 }
e5b16749 416
7932f811 417
f33a3764 418 if (wtot>0) {
419 d /= wtot ;
420 }
421 else
422 AliError(Form("Wrong weight %f\n", wtot));
d15a28e7 423
f33a3764 424 fDispersion = 0;
425 if (d>=0)
426 fDispersion = TMath::Sqrt(d) ;
91daaf24 427
c63c49e9 428
d15a28e7 429}
fad3e5b9 430//______________________________________________________________________________
e5b16749 431void AliPHOSEmcRecPoint::EvalCoreEnergy(Float_t logWeight, TClonesArray * digits)
fad3e5b9 432{
a4e98857 433 // This function calculates energy in the core,
434 // i.e. within a radius rad = 3cm around the center. Beyond this radius
435 // in accordance with shower profile the energy deposition
fad3e5b9 436 // should be less than 2%
91daaf24 437//DP: non-perpendicular incidence??????????????
fad3e5b9 438
fad3e5b9 439 Float_t coreRadius = 3 ;
440
e5b16749 441 Float_t x = 0 ;
442 Float_t z = 0 ;
fad3e5b9 443
444 AliPHOSDigit * digit ;
7b7c1533 445
686b771f 446 AliPHOSGeometry * phosgeom = AliPHOSGeometry::GetInstance();
88cb7938 447
fad3e5b9 448 Int_t iDigit;
e5b16749 449
450// Calculates the center of gravity in the local PHOS-module coordinates
451 Float_t wtot = 0;
452 for(iDigit=0; iDigit<fMulDigit; iDigit++) {
453 digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ;
454 Int_t relid[4] ;
455 Float_t xi ;
456 Float_t zi ;
457 phosgeom->AbsToRelNumbering(digit->GetId(), relid) ;
458 phosgeom->RelPosInModule(relid, xi, zi);
f33a3764 459 if (fAmp>0 && fEnergyList[iDigit]>0) {
460 Float_t w = TMath::Max( 0., logWeight + TMath::Log( fEnergyList[iDigit] / fAmp ) ) ;
461 x += xi * w ;
462 z += zi * w ;
463 wtot += w ;
464 }
465 else
466 AliError(Form("Wrong energy %f and/or amplitude %f\n", fEnergyList[iDigit], fAmp));
e5b16749 467 }
f33a3764 468 if (wtot>0) {
469 x /= wtot ;
470 z /= wtot ;
471 }
472 else
473 AliError(Form("Wrong weight %f\n", wtot));
e5b16749 474
475
fad3e5b9 476 for(iDigit=0; iDigit < fMulDigit; iDigit++) {
7932f811 477 digit = (AliPHOSDigit *) ( digits->At(fDigitsList[iDigit]) ) ;
fad3e5b9 478 Int_t relid[4] ;
479 Float_t xi ;
480 Float_t zi ;
481 phosgeom->AbsToRelNumbering(digit->GetId(), relid) ;
482 phosgeom->RelPosInModule(relid, xi, zi);
483 Float_t distance = TMath::Sqrt((xi-x)*(xi-x)+(zi-z)*(zi-z)) ;
484 if(distance < coreRadius)
7932f811 485 fCoreEnergy += fEnergyList[iDigit] ;
fad3e5b9 486 }
487
91daaf24 488
fad3e5b9 489}
d15a28e7 490
491//____________________________________________________________________________
91daaf24 492void AliPHOSEmcRecPoint::EvalElipsAxis(Float_t logWeight,TClonesArray * digits, TVector3 &vInc)
d15a28e7 493{
b2a60966 494 // Calculates the axis of the shower ellipsoid
83974468 495
e8dbb96e 496 Double_t wtot = 0. ;
497 Double_t x = 0.;
498 Double_t z = 0.;
499 Double_t dxx = 0.;
500 Double_t dzz = 0.;
501 Double_t dxz = 0.;
d15a28e7 502
503 AliPHOSDigit * digit ;
7b7c1533 504
686b771f 505 AliPHOSGeometry * phosgeom = AliPHOSGeometry::GetInstance();
7b7c1533 506
d15a28e7 507 Int_t iDigit;
508
e5b16749 509
d15a28e7 510 for(iDigit=0; iDigit<fMulDigit; iDigit++) {
7932f811 511 digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ;
d15a28e7 512 Int_t relid[4] ;
513 Float_t xi ;
514 Float_t zi ;
92862013 515 phosgeom->AbsToRelNumbering(digit->GetId(), relid) ;
516 phosgeom->RelPosInModule(relid, xi, zi);
f33a3764 517 if (fAmp>0 && fEnergyList[iDigit]>0) {
518 Double_t w = TMath::Max(0.,logWeight+TMath::Log(fEnergyList[iDigit]/fAmp ) ) ;
519 dxx += w * xi * xi ;
520 x += w * xi ;
521 dzz += w * zi * zi ;
522 z += w * zi ;
523 dxz += w * xi * zi ;
524 wtot += w ;
525 }
526 else
527 AliError(Form("Wrong energy %f and/or amplitude %f\n", fEnergyList[iDigit], fAmp));
d15a28e7 528 }
f33a3764 529 if (wtot>0) {
530 dxx /= wtot ;
531 x /= wtot ;
532 dxx -= x * x ;
533 dzz /= wtot ;
534 z /= wtot ;
535 dzz -= z * z ;
536 dxz /= wtot ;
537 dxz -= x * z ;
d15a28e7 538
69183710 539// //Apply correction due to non-perpendicular incidence
540// Double_t CosX ;
541// Double_t CosZ ;
88cb7938 542// AliPHOSGetter * gime = AliPHOSGetter::Instance() ;
7b7c1533 543// AliPHOSGeometry * phosgeom = (AliPHOSGeometry*)gime->PHOSGeometry();
91daaf24 544// Double_t DistanceToIP= (Double_t ) phosgeom->GetIPtoCrystalSurface() ;
69183710 545
546// CosX = DistanceToIP/TMath::Sqrt(DistanceToIP*DistanceToIP+x*x) ;
547// CosZ = DistanceToIP/TMath::Sqrt(DistanceToIP*DistanceToIP+z*z) ;
548
549// dxx = dxx/(CosX*CosX) ;
550// dzz = dzz/(CosZ*CosZ) ;
551// dxz = dxz/(CosX*CosZ) ;
552
553
f33a3764 554 fLambda[0] = 0.5 * (dxx + dzz) + TMath::Sqrt( 0.25 * (dxx - dzz) * (dxx - dzz) + dxz * dxz ) ;
555 if(fLambda[0] > 0)
556 fLambda[0] = TMath::Sqrt(fLambda[0]) ;
e8dbb96e 557
f33a3764 558 fLambda[1] = 0.5 * (dxx + dzz) - TMath::Sqrt( 0.25 * (dxx - dzz) * (dxx - dzz) + dxz * dxz ) ;
559 if(fLambda[1] > 0) //To avoid exception if numerical errors lead to negative lambda.
560 fLambda[1] = TMath::Sqrt(fLambda[1]) ;
561 else
562 fLambda[1]= 0. ;
563 }
564 else {
565 AliError(Form("Wrong weight %f\n", wtot));
566 fLambda[0]=fLambda[1]=0.;
567 }
d15a28e7 568}
569
ce2a9a95 570//____________________________________________________________________________
91daaf24 571void AliPHOSEmcRecPoint::EvalMoments(Float_t logWeight,TClonesArray * digits, TVector3 &vInc)
ce2a9a95 572{
573 // Calculate the shower moments in the eigen reference system
574 // M2x, M2z, M3x, M4z
575 // Calculate the angle between the shower position vector and the eigen vector
576
577 Double_t wtot = 0. ;
578 Double_t x = 0.;
579 Double_t z = 0.;
580 Double_t dxx = 0.;
581 Double_t dzz = 0.;
582 Double_t dxz = 0.;
583 Double_t lambda0=0, lambda1=0;
584
585 AliPHOSDigit * digit ;
586
686b771f 587 AliPHOSGeometry * phosgeom = AliPHOSGeometry::GetInstance() ;
ce2a9a95 588
589 Int_t iDigit;
590
591 // 1) Find covariance matrix elements:
592 // || dxx dxz ||
593 // || dxz dzz ||
594
595 Float_t xi ;
596 Float_t zi ;
597 Int_t relid[4] ;
598 Double_t w;
599 for(iDigit=0; iDigit<fMulDigit; iDigit++) {
600 digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ;
601 phosgeom->AbsToRelNumbering(digit->GetId(), relid) ;
602 phosgeom->RelPosInModule(relid, xi, zi);
f33a3764 603 if (fAmp>0 && fEnergyList[iDigit]>0) {
604 w = TMath::Max(0.,logWeight+TMath::Log(fEnergyList[iDigit]/fAmp ) ) ;
605 x += w * xi ;
606 z += w * zi ;
607 dxx += w * xi * xi ;
608 dzz += w * zi * zi ;
609 dxz += w * xi * zi ;
610 wtot += w ;
611 }
612 else
613 AliError(Form("Wrong energy %f and/or amplitude %f\n", fEnergyList[iDigit], fAmp));
614
ce2a9a95 615 }
f33a3764 616 if (wtot>0) {
617 x /= wtot ;
618 z /= wtot ;
619 dxx /= wtot ;
620 dzz /= wtot ;
621 dxz /= wtot ;
622 dxx -= x * x ;
623 dzz -= z * z ;
624 dxz -= x * z ;
ce2a9a95 625
626 // 2) Find covariance matrix eigen values lambda0 and lambda1
627
f33a3764 628 lambda0 = 0.5 * (dxx + dzz) + TMath::Sqrt( 0.25 * (dxx - dzz) * (dxx - dzz) + dxz * dxz ) ;
629 lambda1 = 0.5 * (dxx + dzz) - TMath::Sqrt( 0.25 * (dxx - dzz) * (dxx - dzz) + dxz * dxz ) ;
630 }
631 else {
632 AliError(Form("Wrong weight %f\n", wtot));
633 lambda0=lambda1=0.;
634 }
ce2a9a95 635
636 // 3) Find covariance matrix eigen vectors e0 and e1
637
638 TVector2 e0,e1;
639 if (dxz != 0)
640 e0.Set(1.,(lambda0-dxx)/dxz);
641 else
642 e0.Set(0.,1.);
643
644 e0 = e0.Unit();
645 e1.Set(-e0.Y(),e0.X());
646
647 // 4) Rotate cluster tensor from (x,z) to (e0,e1) system
648 // and calculate moments M3x and M4z
649
650 Float_t cosPhi = e0.X();
651 Float_t sinPhi = e0.Y();
652
653 Float_t xiPHOS ;
654 Float_t ziPHOS ;
655 Double_t dx3, dz3, dz4;
656 wtot = 0.;
657 x = 0.;
658 z = 0.;
659 dxx = 0.;
660 dzz = 0.;
661 dxz = 0.;
662 dx3 = 0.;
663 dz3 = 0.;
664 dz4 = 0.;
665 for(iDigit=0; iDigit<fMulDigit; iDigit++) {
666 digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ;
667 phosgeom->AbsToRelNumbering(digit->GetId(), relid) ;
668 phosgeom->RelPosInModule(relid, xiPHOS, ziPHOS);
669 xi = xiPHOS*cosPhi + ziPHOS*sinPhi;
670 zi = ziPHOS*cosPhi - xiPHOS*sinPhi;
f33a3764 671 if (fAmp>0 && fEnergyList[iDigit]>0) {
672 w = TMath::Max(0.,logWeight+TMath::Log(fEnergyList[iDigit]/fAmp ) ) ;
673 x += w * xi ;
674 z += w * zi ;
675 dxx += w * xi * xi ;
676 dzz += w * zi * zi ;
677 dxz += w * xi * zi ;
678 dx3 += w * xi * xi * xi;
679 dz3 += w * zi * zi * zi ;
680 dz4 += w * zi * zi * zi * zi ;
681 wtot += w ;
682 }
683 else
684 AliError(Form("Wrong energy %f and/or amplitude %f\n", fEnergyList[iDigit], fAmp));
ce2a9a95 685 }
f33a3764 686 if (wtot>0) {
687 x /= wtot ;
688 z /= wtot ;
689 dxx /= wtot ;
690 dzz /= wtot ;
691 dxz /= wtot ;
692 dx3 /= wtot ;
693 dz3 /= wtot ;
694 dz4 /= wtot ;
695 dx3 += -3*dxx*x + 2*x*x*x;
696 dz4 += -4*dz3*z + 6*dzz*z*z -3*z*z*z*z;
697 dxx -= x * x ;
698 dzz -= z * z ;
699 dxz -= x * z ;
700 }
701 else
702 AliError(Form("Wrong weight %f\n", wtot));
ce2a9a95 703
704 // 5) Find an angle between cluster center vector and eigen vector e0
705
f33a3764 706 Float_t phi = 0;
707 if ( (x*x+z*z) > 0 )
708 phi = TMath::ACos ((x*e0.X() + z*e0.Y()) / sqrt(x*x + z*z));
ce2a9a95 709
710 fM2x = lambda0;
711 fM2z = lambda1;
712 fM3x = dx3;
713 fM4z = dz4;
714 fPhixe = phi;
715
716}
c307c629 717//______________________________________________________________________________
718void AliPHOSEmcRecPoint::EvalPrimaries(TClonesArray * digits)
719{
720 // Constructs the list of primary particles (tracks) which have contributed to this RecPoint
721
722 AliPHOSDigit * digit ;
723 Int_t * tempo = new Int_t[fMaxTrack] ;
724
725 //First find digit with maximal energy deposition and copy its primaries
726 Float_t emax=0.;
727 Int_t imaxDigit=0;
728 for(Int_t id=0; id<GetDigitsMultiplicity(); id++){
729 if(emax<fEnergyList[id])
730 imaxDigit=id ;
731 }
732 digit = dynamic_cast<AliPHOSDigit *>(digits->At( fDigitsList[imaxDigit] )) ;
733 Int_t nprimaries = digit->GetNprimary() ;
734 if ( nprimaries > fMaxTrack ) {
735 fMulTrack = - 1 ;
736 Error("EvalPrimaries", "GetNprimaries ERROR > increase fMaxTrack" ) ;
737 nprimaries = fMaxTrack; //skip the rest
738 }
739 for(fMulTrack=1; fMulTrack<=nprimaries ; fMulTrack++){
740 tempo[fMulTrack-1] = digit->GetPrimary(fMulTrack) ;
741 }
742
743 //Now add other digits contributions
744 for (Int_t index = 0 ; index < GetDigitsMultiplicity() ; index++ ) { // all digits
745 if(index==imaxDigit) //already in
746 continue ;
747 digit = dynamic_cast<AliPHOSDigit *>(digits->At( fDigitsList[index] )) ;
748 nprimaries = digit->GetNprimary() ;
749 for(Int_t ipr=0; ipr<nprimaries; ipr++){
750 Int_t iprimary = digit->GetPrimary(ipr+1) ;
751 Bool_t notIn=1 ;
752 for(Int_t kndex = 0 ; (kndex < fMulTrack)&& notIn ; kndex++ ) { //check if not already stored
753 if(iprimary == tempo[kndex]){
754 notIn = kFALSE ;
755 }
756 }
757 if(notIn){
758 if(fMulTrack<fMaxTrack){
759 tempo[fMulTrack]=iprimary ;
760 fMulTrack++ ;
761 }
762 else{
763 Error("EvalPrimaries", "GetNprimaries ERROR > increase fMaxTrack!!!" ) ;
764 break ;
765 }
766 }
767 }
768 } // all digits
769
770 if(fMulTrack > 0){
771 if(fTracksList)delete [] fTracksList;
772 fTracksList = new Int_t[fMulTrack] ;
773 }
774 for(Int_t index = 0; index < fMulTrack; index++)
775 fTracksList[index] = tempo[index] ;
776
777 delete [] tempo ;
778
779}
780
b2a60966 781//____________________________________________________________________________
7932f811 782void AliPHOSEmcRecPoint::EvalAll(Float_t logWeight, TClonesArray * digits )
ad8cfaf4 783{
e5b16749 784 EvalCoreEnergy(logWeight, digits);
a6eedfad 785 EvalTime(digits) ;
c307c629 786 EvalPrimaries(digits) ;
e957fea8 787 AliPHOSRecPoint::EvalAll(digits) ;
ad8cfaf4 788}
789//____________________________________________________________________________
91daaf24 790void AliPHOSEmcRecPoint::EvalAll(Float_t logWeight, TVector3 &vtx, TClonesArray * digits )
791{
792 // Evaluates all shower parameters
793 TVector3 vInc ;
794 EvalLocalPosition(logWeight, vtx, digits,vInc) ;
795 EvalElipsAxis(logWeight, digits, vInc) ; //they are evaluated with momenta
796 EvalMoments(logWeight, digits, vInc) ;
797 EvalDispersion(logWeight, digits, vInc) ;
798}
799//____________________________________________________________________________
800void AliPHOSEmcRecPoint::EvalLocalPosition(Float_t logWeight, TVector3 &vtx, TClonesArray * digits, TVector3 &vInc)
b2a60966 801{
802 // Calculates the center of gravity in the local PHOS-module coordinates
b2a60966 803 Float_t wtot = 0. ;
804
805 Int_t relid[4] ;
806
807 Float_t x = 0. ;
808 Float_t z = 0. ;
809
810 AliPHOSDigit * digit ;
811
686b771f 812 AliPHOSGeometry * phosgeom = AliPHOSGeometry::GetInstance() ;
b2a60966 813
814 Int_t iDigit;
815
b2a60966 816 for(iDigit=0; iDigit<fMulDigit; iDigit++) {
7932f811 817 digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ;
b2a60966 818
819 Float_t xi ;
820 Float_t zi ;
821 phosgeom->AbsToRelNumbering(digit->GetId(), relid) ;
822 phosgeom->RelPosInModule(relid, xi, zi);
f33a3764 823 if (fAmp>0 && fEnergyList[iDigit]>0) {
824 Float_t w = TMath::Max( 0., logWeight + TMath::Log( fEnergyList[iDigit] / fAmp ) ) ;
825 x += xi * w ;
826 z += zi * w ;
827 wtot += w ;
828 }
829 else
830 AliError(Form("Wrong energy %f and/or amplitude %f\n", fEnergyList[iDigit], fAmp));
9ce1a8d9 831 }
f33a3764 832 if (wtot>0) {
833 x /= wtot ;
834 z /= wtot ;
835 }
836 else
837 AliError(Form("Wrong weight %f\n", wtot));
ad8cfaf4 838
839 // Correction for the depth of the shower starting point (TDR p 127)
840 Float_t para = 0.925 ;
841 Float_t parb = 6.52 ;
842
91daaf24 843 phosgeom->GetIncidentVector(vtx,GetPHOSMod(),x,z,vInc) ;
1b799736 844
f33a3764 845 Float_t depthx = 0.;
846 Float_t depthz = 0.;
91daaf24 847 if (fAmp>0&&vInc.Y()!=0.) {
753b19cd 848 depthx = ( para * TMath::Log(fAmp) + parb ) * vInc.X()/TMath::Abs(vInc.Y()) ;
849 depthz = ( para * TMath::Log(fAmp) + parb ) * vInc.Z()/TMath::Abs(vInc.Y()) ;
f33a3764 850 }
851 else
852 AliError(Form("Wrong amplitude %f\n", fAmp));
ad8cfaf4 853
854 fLocPos.SetX(x - depthx) ;
b2a60966 855 fLocPos.SetY(0.) ;
ad8cfaf4 856 fLocPos.SetZ(z - depthz) ;
b2a60966 857
a6eedfad 858 fLocPosM = 0 ;
b2a60966 859}
860
d15a28e7 861//____________________________________________________________________________
ad8cfaf4 862Float_t AliPHOSEmcRecPoint::GetMaximalEnergy(void) const
d15a28e7 863{
b2a60966 864 // Finds the maximum energy in the cluster
865
d15a28e7 866 Float_t menergy = 0. ;
867
868 Int_t iDigit;
869
870 for(iDigit=0; iDigit<fMulDigit; iDigit++) {
871
872 if(fEnergyList[iDigit] > menergy)
873 menergy = fEnergyList[iDigit] ;
874 }
875 return menergy ;
876}
877
878//____________________________________________________________________________
fc7e2f43 879Int_t AliPHOSEmcRecPoint::GetMultiplicityAtLevel(Float_t H) const
d15a28e7 880{
b2a60966 881 // Calculates the multiplicity of digits with energy larger than H*energy
882
d15a28e7 883 Int_t multipl = 0 ;
884 Int_t iDigit ;
885 for(iDigit=0; iDigit<fMulDigit; iDigit++) {
886
887 if(fEnergyList[iDigit] > H * fAmp)
888 multipl++ ;
889 }
890 return multipl ;
891}
892
893//____________________________________________________________________________
a0636361 894Int_t AliPHOSEmcRecPoint::GetNumberOfLocalMax( AliPHOSDigit ** maxAt, Float_t * maxAtEnergy,
7932f811 895 Float_t locMaxCut,TClonesArray * digits) const
d15a28e7 896{
b2a60966 897 // Calculates the number of local maxima in the cluster using fLocalMaxCut as the minimum
a4e98857 898 // energy difference between two local maxima
b2a60966 899
d15a28e7 900 AliPHOSDigit * digit ;
901 AliPHOSDigit * digitN ;
902
903
904 Int_t iDigitN ;
905 Int_t iDigit ;
906
7932f811 907 for(iDigit = 0; iDigit < fMulDigit; iDigit++)
a0636361 908 maxAt[iDigit] = (AliPHOSDigit*) digits->At(fDigitsList[iDigit]) ;
7932f811 909
d15a28e7 910
6ad0bfa0 911 for(iDigit = 0 ; iDigit < fMulDigit; iDigit++) {
a0636361 912 if(maxAt[iDigit]) {
913 digit = maxAt[iDigit] ;
83974468 914
6ad0bfa0 915 for(iDigitN = 0; iDigitN < fMulDigit; iDigitN++) {
686b771f 916 if(iDigit == iDigitN)
917 continue ;
918
7932f811 919 digitN = (AliPHOSDigit *) digits->At(fDigitsList[iDigitN]) ;
d15a28e7 920
9f616d61 921 if ( AreNeighbours(digit, digitN) ) {
d15a28e7 922 if (fEnergyList[iDigit] > fEnergyList[iDigitN] ) {
a0636361 923 maxAt[iDigitN] = 0 ;
6ad0bfa0 924 // but may be digit too is not local max ?
7932f811 925 if(fEnergyList[iDigit] < fEnergyList[iDigitN] + locMaxCut)
a0636361 926 maxAt[iDigit] = 0 ;
d15a28e7 927 }
928 else {
a0636361 929 maxAt[iDigit] = 0 ;
6ad0bfa0 930 // but may be digitN too is not local max ?
7932f811 931 if(fEnergyList[iDigit] > fEnergyList[iDigitN] - locMaxCut)
a0636361 932 maxAt[iDigitN] = 0 ;
d15a28e7 933 }
934 } // if Areneighbours
935 } // while digitN
936 } // slot not empty
937 } // while digit
938
939 iDigitN = 0 ;
6ad0bfa0 940 for(iDigit = 0; iDigit < fMulDigit; iDigit++) {
a0636361 941 if(maxAt[iDigit]){
d15a28e7 942 maxAt[iDigitN] = maxAt[iDigit] ;
9f616d61 943 maxAtEnergy[iDigitN] = fEnergyList[iDigit] ;
944 iDigitN++ ;
d15a28e7 945 }
946 }
947 return iDigitN ;
948}
9688c1dd 949//____________________________________________________________________________
0bc3b8ed 950void AliPHOSEmcRecPoint::EvalTime(TClonesArray * digits)
951{
952 // Define a rec.point time as a time in the cell with the maximum energy
953
9688c1dd 954 Float_t maxE = 0;
955 Int_t maxAt = 0;
956 for(Int_t idig=0; idig < fMulDigit; idig++){
957 if(fEnergyList[idig] > maxE){
958 maxE = fEnergyList[idig] ;
959 maxAt = idig;
960 }
961 }
962 fTime = ((AliPHOSDigit*) digits->At(fDigitsList[maxAt]))->GetTime() ;
963
964}
d15a28e7 965//____________________________________________________________________________
092b50ba 966void AliPHOSEmcRecPoint::Purify(Float_t threshold){
967 //Removes digits below threshold
968
0fbb8738 969 Int_t * tempo = new Int_t[fMaxDigit];
970 Float_t * tempoE = new Float_t[fMaxDigit];
092b50ba 971
972 Int_t mult = 0 ;
973 for(Int_t iDigit=0;iDigit< fMulDigit ;iDigit++){
974 if(fEnergyList[iDigit] > threshold){
975 tempo[mult] = fDigitsList[iDigit] ;
976 tempoE[mult] = fEnergyList[iDigit] ;
977 mult++ ;
978 }
979 }
980
981 fMulDigit = mult ;
982 delete [] fDigitsList ;
983 delete [] fEnergyList ;
0fbb8738 984 fDigitsList = new Int_t[fMulDigit];
985 fEnergyList = new Float_t[fMulDigit];
092b50ba 986
0458aa58 987 fAmp = 0.; //Recalculate total energy
092b50ba 988 for(Int_t iDigit=0;iDigit< fMulDigit ;iDigit++){
0458aa58 989 fDigitsList[iDigit] = tempo[iDigit];
990 fEnergyList[iDigit] = tempoE[iDigit] ;
991 fAmp+=tempoE[iDigit];
092b50ba 992 }
993
994 delete [] tempo ;
995 delete [] tempoE ;
996
997}
998//____________________________________________________________________________
a8c47ab6 999void AliPHOSEmcRecPoint::Print(Option_t *) const
d15a28e7 1000{
b2a60966 1001 // Print the list of digits belonging to the cluster
1002
21cd0c07 1003 TString message ;
1004 message = "AliPHOSEmcRecPoint:\n" ;
6f766ada 1005 message += "Digit multiplicity = %d" ;
1006 message += ", cluster Energy = %f" ;
1007 message += ", number of primaries = %d" ;
1008 message += ", rec.point index = %d \n" ;
1009 printf(message.Data(), fMulDigit, fAmp, fMulTrack,GetIndexInList() ) ;
d15a28e7 1010
d15a28e7 1011 Int_t iDigit;
6f766ada 1012 printf(" digits ids = ") ;
7932f811 1013 for(iDigit=0; iDigit<fMulDigit; iDigit++)
53ad38d8 1014 printf(" %d ", fDigitsList[iDigit] ) ;
7932f811 1015
6f766ada 1016 printf("\n digit energies = ") ;
7932f811 1017 for(iDigit=0; iDigit<fMulDigit; iDigit++)
53ad38d8 1018 printf(" %f ", fEnergyList[iDigit] ) ;
6f766ada 1019
1020 printf("\n digit primaries ") ;
1021 if (fMulTrack<1) printf("... no primaries");
bc68d12c 1022 for(iDigit = 0;iDigit < fMulTrack; iDigit++)
53ad38d8 1023 printf(" %d ", fTracksList[iDigit]) ;
1024 printf("\n") ;
6f766ada 1025
d15a28e7 1026}
88714635 1027
7932f811 1028