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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 "TH2.h" |
d15a28e7 | 27 | #include "TMath.h" |
9f616d61 | 28 | #include "TCanvas.h" |
55fe9d13 | 29 | #include "TGraph.h" |
d15a28e7 | 30 | |
31 | // --- Standard library --- | |
32 | ||
d15a28e7 | 33 | // --- AliRoot header files --- |
e957fea8 | 34 | #include "AliPHOSLoader.h" |
88cb7938 | 35 | #include "AliGenerator.h" |
d15a28e7 | 36 | #include "AliPHOSGeometry.h" |
e957fea8 | 37 | #include "AliPHOSDigit.h" |
d15a28e7 | 38 | #include "AliPHOSEmcRecPoint.h" |
e957fea8 | 39 | |
d15a28e7 | 40 | ClassImp(AliPHOSEmcRecPoint) |
41 | ||
42 | //____________________________________________________________________________ | |
7932f811 | 43 | AliPHOSEmcRecPoint::AliPHOSEmcRecPoint() : AliPHOSRecPoint() |
d15a28e7 | 44 | { |
45 | // ctor | |
46 | ||
47 | fMulDigit = 0 ; | |
48 | fAmp = 0. ; | |
7932f811 | 49 | fCoreEnergy = 0 ; |
50 | fEnergyList = 0 ; | |
94256c23 | 51 | fNExMax = 0 ; //Not unfolded yet |
9688c1dd | 52 | fTime = -1. ; |
a6eedfad | 53 | fLocPos.SetX(1000000.) ; //Local position should be evaluated |
ce2a9a95 | 54 | fDebug=0; |
7b7c1533 | 55 | |
83974468 | 56 | } |
57 | ||
73a68ccb | 58 | //____________________________________________________________________________ |
59 | AliPHOSEmcRecPoint::AliPHOSEmcRecPoint(const char * opt) : AliPHOSRecPoint(opt) | |
60 | { | |
61 | // ctor | |
62 | ||
63 | fMulDigit = 0 ; | |
64 | fAmp = 0. ; | |
94256c23 | 65 | fNExMax = 0 ; //Not unfolded yet |
73a68ccb | 66 | fCoreEnergy = 0 ; |
67 | fEnergyList = 0 ; | |
68 | fTime = -1. ; | |
69 | fLocPos.SetX(1000000.) ; //Local position should be evaluated | |
ce2a9a95 | 70 | fDebug=0; |
73a68ccb | 71 | |
72 | } | |
73 | ||
55fe9d13 | 74 | //____________________________________________________________________________ |
75 | AliPHOSEmcRecPoint::AliPHOSEmcRecPoint(const AliPHOSEmcRecPoint & rp) : AliPHOSRecPoint(rp) | |
76 | { | |
77 | // cpy ctor | |
78 | ||
79 | fMulDigit = rp.fMulDigit ; | |
80 | fAmp = rp.fAmp ; | |
81 | fCoreEnergy = rp.fCoreEnergy ; | |
82 | fEnergyList = new Float_t[rp.fMulDigit] ; | |
83 | Int_t index ; | |
84 | for(index = 0 ; index < fMulDigit ; index++) | |
85 | fEnergyList[index] = rp.fEnergyList[index] ; | |
86 | fNExMax = rp.fNExMax ; | |
87 | fTime = rp.fTime ; | |
88 | } | |
89 | ||
83974468 | 90 | //____________________________________________________________________________ |
91 | AliPHOSEmcRecPoint::~AliPHOSEmcRecPoint() | |
92 | { | |
88714635 | 93 | // dtor |
a4e98857 | 94 | |
83974468 | 95 | if ( fEnergyList ) |
96 | delete[] fEnergyList ; | |
d15a28e7 | 97 | } |
98 | ||
d15a28e7 | 99 | //____________________________________________________________________________ |
83974468 | 100 | void AliPHOSEmcRecPoint::AddDigit(AliPHOSDigit & digit, Float_t Energy) |
d15a28e7 | 101 | { |
b2a60966 | 102 | // Adds a digit to the RecPoint |
a4e98857 | 103 | // and accumulates the total amplitude and the multiplicity |
d15a28e7 | 104 | |
7932f811 | 105 | if(fEnergyList == 0) |
106 | fEnergyList = new Float_t[fMaxDigit]; | |
107 | ||
d15a28e7 | 108 | if ( fMulDigit >= fMaxDigit ) { // increase the size of the lists |
9f616d61 | 109 | fMaxDigit*=2 ; |
0fbb8738 | 110 | Int_t * tempo = new Int_t[fMaxDigit]; |
111 | Float_t * tempoE = new Float_t[fMaxDigit]; | |
9f616d61 | 112 | |
113 | Int_t index ; | |
d15a28e7 | 114 | for ( index = 0 ; index < fMulDigit ; index++ ){ |
83974468 | 115 | tempo[index] = fDigitsList[index] ; |
d15a28e7 | 116 | tempoE[index] = fEnergyList[index] ; |
117 | } | |
118 | ||
9f616d61 | 119 | delete [] fDigitsList ; |
0fbb8738 | 120 | fDigitsList = new Int_t[fMaxDigit]; |
9f616d61 | 121 | |
122 | delete [] fEnergyList ; | |
0fbb8738 | 123 | fEnergyList = new Float_t[fMaxDigit]; |
9f616d61 | 124 | |
125 | for ( index = 0 ; index < fMulDigit ; index++ ){ | |
126 | fDigitsList[index] = tempo[index] ; | |
127 | fEnergyList[index] = tempoE[index] ; | |
128 | } | |
129 | ||
130 | delete [] tempo ; | |
131 | delete [] tempoE ; | |
132 | } // if | |
d15a28e7 | 133 | |
83974468 | 134 | fDigitsList[fMulDigit] = digit.GetIndexInList() ; |
135 | fEnergyList[fMulDigit] = Energy ; | |
136 | fMulDigit++ ; | |
d15a28e7 | 137 | fAmp += Energy ; |
7932f811 | 138 | |
139 | EvalPHOSMod(&digit) ; | |
d15a28e7 | 140 | } |
141 | ||
142 | //____________________________________________________________________________ | |
ad8cfaf4 | 143 | Bool_t AliPHOSEmcRecPoint::AreNeighbours(AliPHOSDigit * digit1, AliPHOSDigit * digit2 ) const |
d15a28e7 | 144 | { |
a4e98857 | 145 | // Tells if (true) or not (false) two digits are neighbors |
d15a28e7 | 146 | |
147 | Bool_t aren = kFALSE ; | |
148 | ||
88cb7938 | 149 | AliPHOSGeometry * phosgeom = AliPHOSLoader::GetPHOSGeometry(); |
7b7c1533 | 150 | |
d15a28e7 | 151 | Int_t relid1[4] ; |
92862013 | 152 | phosgeom->AbsToRelNumbering(digit1->GetId(), relid1) ; |
d15a28e7 | 153 | |
154 | Int_t relid2[4] ; | |
92862013 | 155 | phosgeom->AbsToRelNumbering(digit2->GetId(), relid2) ; |
d15a28e7 | 156 | |
92862013 | 157 | Int_t rowdiff = TMath::Abs( relid1[2] - relid2[2] ) ; |
158 | Int_t coldiff = TMath::Abs( relid1[3] - relid2[3] ) ; | |
d15a28e7 | 159 | |
92862013 | 160 | if (( coldiff <= 1 ) && ( rowdiff <= 1 ) && (coldiff + rowdiff > 0)) |
d15a28e7 | 161 | aren = kTRUE ; |
162 | ||
163 | return aren ; | |
164 | } | |
165 | ||
166 | //____________________________________________________________________________ | |
2a941f4e | 167 | Int_t AliPHOSEmcRecPoint::Compare(const TObject * obj) const |
d15a28e7 | 168 | { |
b2a60966 | 169 | // Compares two RecPoints according to their position in the PHOS modules |
170 | ||
7932f811 | 171 | Float_t delta = 1 ; //Width of "Sorting row". If you changibg this |
172 | //value (what is senseless) change as vell delta in | |
173 | //AliPHOSTrackSegmentMakerv* and other RecPoints... | |
d15a28e7 | 174 | Int_t rv ; |
175 | ||
176 | AliPHOSEmcRecPoint * clu = (AliPHOSEmcRecPoint *)obj ; | |
177 | ||
178 | ||
ad8cfaf4 | 179 | Int_t phosmod1 = GetPHOSMod() ; |
92862013 | 180 | Int_t phosmod2 = clu->GetPHOSMod() ; |
d15a28e7 | 181 | |
92862013 | 182 | TVector3 locpos1; |
7932f811 | 183 | GetLocalPosition(locpos1) ; |
92862013 | 184 | TVector3 locpos2; |
185 | clu->GetLocalPosition(locpos2) ; | |
d15a28e7 | 186 | |
92862013 | 187 | if(phosmod1 == phosmod2 ) { |
7932f811 | 188 | Int_t rowdif = (Int_t)TMath::Ceil(locpos1.X()/delta)-(Int_t)TMath::Ceil(locpos2.X()/delta) ; |
d15a28e7 | 189 | if (rowdif> 0) |
7932f811 | 190 | rv = 1 ; |
d15a28e7 | 191 | else if(rowdif < 0) |
7932f811 | 192 | rv = -1 ; |
92862013 | 193 | else if(locpos1.Z()>locpos2.Z()) |
d15a28e7 | 194 | rv = -1 ; |
195 | else | |
196 | rv = 1 ; | |
197 | } | |
198 | ||
199 | else { | |
92862013 | 200 | if(phosmod1 < phosmod2 ) |
d15a28e7 | 201 | rv = -1 ; |
202 | else | |
203 | rv = 1 ; | |
204 | } | |
205 | ||
206 | return rv ; | |
207 | } | |
9f616d61 | 208 | //______________________________________________________________________________ |
8f2a3661 | 209 | void AliPHOSEmcRecPoint::ExecuteEvent(Int_t event, Int_t, Int_t) const |
9f616d61 | 210 | { |
9f616d61 | 211 | |
9688c1dd | 212 | // Execute action corresponding to one event |
213 | // This member function is called when a AliPHOSRecPoint is clicked with the locator | |
214 | // | |
215 | // If Left button is clicked on AliPHOSRecPoint, the digits are switched on | |
216 | // and switched off when the mouse button is released. | |
217 | ||
88cb7938 | 218 | |
219 | AliPHOSGeometry * phosgeom = AliPHOSLoader::GetPHOSGeometry(); | |
83974468 | 220 | |
9688c1dd | 221 | static TGraph * digitgraph = 0 ; |
83974468 | 222 | |
9688c1dd | 223 | if (!gPad->IsEditable()) return; |
83974468 | 224 | |
9688c1dd | 225 | TH2F * histo = 0 ; |
226 | TCanvas * histocanvas ; | |
227 | ||
88cb7938 | 228 | |
229 | //try to get run loader from default event folder | |
e191bb57 | 230 | AliRunLoader* rn = AliRunLoader::GetRunLoader(AliConfig::GetDefaultEventFolderName()); |
88cb7938 | 231 | if (rn == 0x0) |
232 | { | |
233 | Error("ExecuteEvent","Can not find Run Loader in Default Event Folder"); | |
234 | return; | |
235 | } | |
236 | AliPHOSLoader* gime = dynamic_cast<AliPHOSLoader*>(rn->GetLoader("PHOSLoader")); | |
237 | if (gime == 0x0) | |
238 | { | |
239 | Error("ExecuteEvent","Can not find PHOS Loader from Run Loader"); | |
240 | return; | |
241 | } | |
242 | ||
243 | ||
afa51c4e | 244 | const TClonesArray * digits = gime->Digits() ; |
9688c1dd | 245 | |
246 | switch (event) { | |
83974468 | 247 | |
9688c1dd | 248 | case kButton1Down: { |
249 | AliPHOSDigit * digit ; | |
250 | Int_t iDigit; | |
251 | Int_t relid[4] ; | |
83974468 | 252 | |
9688c1dd | 253 | const Int_t kMulDigit = AliPHOSEmcRecPoint::GetDigitsMultiplicity() ; |
254 | Float_t * xi = new Float_t[kMulDigit] ; | |
255 | Float_t * zi = new Float_t[kMulDigit] ; | |
83974468 | 256 | |
9688c1dd | 257 | // create the histogram for the single cluster |
258 | // 1. gets histogram boundaries | |
259 | Float_t ximax = -999. ; | |
260 | Float_t zimax = -999. ; | |
261 | Float_t ximin = 999. ; | |
262 | Float_t zimin = 999. ; | |
83974468 | 263 | |
9688c1dd | 264 | for(iDigit=0; iDigit<kMulDigit; iDigit++) { |
265 | digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ; | |
266 | phosgeom->AbsToRelNumbering(digit->GetId(), relid) ; | |
267 | phosgeom->RelPosInModule(relid, xi[iDigit], zi[iDigit]); | |
268 | if ( xi[iDigit] > ximax ) | |
269 | ximax = xi[iDigit] ; | |
270 | if ( xi[iDigit] < ximin ) | |
271 | ximin = xi[iDigit] ; | |
272 | if ( zi[iDigit] > zimax ) | |
273 | zimax = zi[iDigit] ; | |
274 | if ( zi[iDigit] < zimin ) | |
275 | zimin = zi[iDigit] ; | |
276 | } | |
277 | ximax += phosgeom->GetCrystalSize(0) / 2. ; | |
278 | zimax += phosgeom->GetCrystalSize(2) / 2. ; | |
279 | ximin -= phosgeom->GetCrystalSize(0) / 2. ; | |
280 | zimin -= phosgeom->GetCrystalSize(2) / 2. ; | |
281 | Int_t xdim = (int)( (ximax - ximin ) / phosgeom->GetCrystalSize(0) + 0.5 ) ; | |
282 | Int_t zdim = (int)( (zimax - zimin ) / phosgeom->GetCrystalSize(2) + 0.5 ) ; | |
83974468 | 283 | |
9688c1dd | 284 | // 2. gets the histogram title |
83974468 | 285 | |
9688c1dd | 286 | Text_t title[100] ; |
287 | sprintf(title,"Energy=%1.2f GeV ; Digits ; %d ", GetEnergy(), GetDigitsMultiplicity()) ; | |
83974468 | 288 | |
9688c1dd | 289 | if (!histo) { |
290 | delete histo ; | |
291 | histo = 0 ; | |
292 | } | |
293 | histo = new TH2F("cluster3D", title, xdim, ximin, ximax, zdim, zimin, zimax) ; | |
83974468 | 294 | |
9688c1dd | 295 | Float_t x, z ; |
296 | for(iDigit=0; iDigit<kMulDigit; iDigit++) { | |
297 | digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ; | |
298 | phosgeom->AbsToRelNumbering(digit->GetId(), relid) ; | |
299 | phosgeom->RelPosInModule(relid, x, z); | |
300 | histo->Fill(x, z, fEnergyList[iDigit] ) ; | |
301 | } | |
83974468 | 302 | |
9688c1dd | 303 | if (!digitgraph) { |
304 | digitgraph = new TGraph(kMulDigit,xi,zi); | |
305 | digitgraph-> SetMarkerStyle(5) ; | |
306 | digitgraph-> SetMarkerSize(1.) ; | |
307 | digitgraph-> SetMarkerColor(1) ; | |
308 | digitgraph-> Paint("P") ; | |
309 | } | |
83974468 | 310 | |
9688c1dd | 311 | // Print() ; |
312 | histocanvas = new TCanvas("cluster", "a single cluster", 600, 500) ; | |
313 | histocanvas->Draw() ; | |
314 | histo->Draw("lego1") ; | |
83974468 | 315 | |
9688c1dd | 316 | delete[] xi ; |
317 | delete[] zi ; | |
83974468 | 318 | |
9688c1dd | 319 | break; |
320 | } | |
83974468 | 321 | |
9688c1dd | 322 | case kButton1Up: |
323 | if (digitgraph) { | |
324 | delete digitgraph ; | |
325 | digitgraph = 0 ; | |
326 | } | |
327 | break; | |
9f616d61 | 328 | |
9688c1dd | 329 | } |
9f616d61 | 330 | } |
331 | ||
d15a28e7 | 332 | //____________________________________________________________________________ |
7932f811 | 333 | void AliPHOSEmcRecPoint::EvalDispersion(Float_t logWeight,TClonesArray * digits) |
d15a28e7 | 334 | { |
b2a60966 | 335 | // Calculates the dispersion of the shower at the origine of the RecPoint |
336 | ||
e5b16749 | 337 | Float_t d = 0. ; |
338 | Float_t wtot = 0. ; | |
d15a28e7 | 339 | |
d084d50d | 340 | Float_t x = 0.; |
341 | Float_t z = 0.; | |
d15a28e7 | 342 | |
343 | AliPHOSDigit * digit ; | |
7b7c1533 | 344 | |
88cb7938 | 345 | AliPHOSGeometry * phosgeom = AliPHOSLoader::GetPHOSGeometry(); |
e5b16749 | 346 | |
347 | // Calculates the center of gravity in the local PHOS-module coordinates | |
348 | ||
d15a28e7 | 349 | Int_t iDigit; |
e5b16749 | 350 | |
351 | for(iDigit=0; iDigit<fMulDigit; iDigit++) { | |
352 | digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ; | |
353 | Int_t relid[4] ; | |
354 | Float_t xi ; | |
355 | Float_t zi ; | |
356 | phosgeom->AbsToRelNumbering(digit->GetId(), relid) ; | |
357 | phosgeom->RelPosInModule(relid, xi, zi); | |
358 | Float_t w = TMath::Max( 0., logWeight + TMath::Log( fEnergyList[iDigit] / fAmp ) ) ; | |
359 | x += xi * w ; | |
360 | z += zi * w ; | |
361 | wtot += w ; | |
362 | } | |
363 | x /= wtot ; | |
364 | z /= wtot ; | |
365 | ||
366 | ||
367 | // Calculates the dispersion in coordinates | |
368 | wtot = 0.; | |
88714635 | 369 | for(iDigit=0; iDigit < fMulDigit; iDigit++) { |
7932f811 | 370 | digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ; |
d15a28e7 | 371 | Int_t relid[4] ; |
372 | Float_t xi ; | |
373 | Float_t zi ; | |
92862013 | 374 | phosgeom->AbsToRelNumbering(digit->GetId(), relid) ; |
375 | phosgeom->RelPosInModule(relid, xi, zi); | |
7932f811 | 376 | Float_t w = TMath::Max(0.,logWeight+TMath::Log(fEnergyList[iDigit]/fAmp ) ) ; |
92862013 | 377 | d += w*((xi-x)*(xi-x) + (zi-z)*(zi-z) ) ; |
d15a28e7 | 378 | wtot+=w ; |
d084d50d | 379 | |
380 | ||
d15a28e7 | 381 | } |
e5b16749 | 382 | |
7932f811 | 383 | |
92862013 | 384 | d /= wtot ; |
d15a28e7 | 385 | |
7932f811 | 386 | fDispersion = TMath::Sqrt(d) ; |
c63c49e9 | 387 | |
d15a28e7 | 388 | } |
fad3e5b9 | 389 | //______________________________________________________________________________ |
e5b16749 | 390 | void AliPHOSEmcRecPoint::EvalCoreEnergy(Float_t logWeight, TClonesArray * digits) |
fad3e5b9 | 391 | { |
a4e98857 | 392 | // This function calculates energy in the core, |
393 | // i.e. within a radius rad = 3cm around the center. Beyond this radius | |
394 | // in accordance with shower profile the energy deposition | |
fad3e5b9 | 395 | // should be less than 2% |
396 | ||
fad3e5b9 | 397 | Float_t coreRadius = 3 ; |
398 | ||
e5b16749 | 399 | Float_t x = 0 ; |
400 | Float_t z = 0 ; | |
fad3e5b9 | 401 | |
402 | AliPHOSDigit * digit ; | |
7b7c1533 | 403 | |
88cb7938 | 404 | AliPHOSGeometry * phosgeom = AliPHOSLoader::GetPHOSGeometry(); |
405 | ||
fad3e5b9 | 406 | Int_t iDigit; |
e5b16749 | 407 | |
408 | // Calculates the center of gravity in the local PHOS-module coordinates | |
409 | Float_t wtot = 0; | |
410 | for(iDigit=0; iDigit<fMulDigit; iDigit++) { | |
411 | digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ; | |
412 | Int_t relid[4] ; | |
413 | Float_t xi ; | |
414 | Float_t zi ; | |
415 | phosgeom->AbsToRelNumbering(digit->GetId(), relid) ; | |
416 | phosgeom->RelPosInModule(relid, xi, zi); | |
417 | Float_t w = TMath::Max( 0., logWeight + TMath::Log( fEnergyList[iDigit] / fAmp ) ) ; | |
418 | x += xi * w ; | |
419 | z += zi * w ; | |
420 | wtot += w ; | |
421 | } | |
422 | x /= wtot ; | |
423 | z /= wtot ; | |
424 | ||
425 | ||
fad3e5b9 | 426 | for(iDigit=0; iDigit < fMulDigit; iDigit++) { |
7932f811 | 427 | digit = (AliPHOSDigit *) ( digits->At(fDigitsList[iDigit]) ) ; |
fad3e5b9 | 428 | Int_t relid[4] ; |
429 | Float_t xi ; | |
430 | Float_t zi ; | |
431 | phosgeom->AbsToRelNumbering(digit->GetId(), relid) ; | |
432 | phosgeom->RelPosInModule(relid, xi, zi); | |
433 | Float_t distance = TMath::Sqrt((xi-x)*(xi-x)+(zi-z)*(zi-z)) ; | |
434 | if(distance < coreRadius) | |
7932f811 | 435 | fCoreEnergy += fEnergyList[iDigit] ; |
fad3e5b9 | 436 | } |
437 | ||
fad3e5b9 | 438 | } |
d15a28e7 | 439 | |
440 | //____________________________________________________________________________ | |
7932f811 | 441 | void AliPHOSEmcRecPoint::EvalElipsAxis(Float_t logWeight,TClonesArray * digits) |
d15a28e7 | 442 | { |
b2a60966 | 443 | // Calculates the axis of the shower ellipsoid |
83974468 | 444 | |
e8dbb96e | 445 | Double_t wtot = 0. ; |
446 | Double_t x = 0.; | |
447 | Double_t z = 0.; | |
448 | Double_t dxx = 0.; | |
449 | Double_t dzz = 0.; | |
450 | Double_t dxz = 0.; | |
d15a28e7 | 451 | |
452 | AliPHOSDigit * digit ; | |
7b7c1533 | 453 | |
88cb7938 | 454 | AliPHOSGeometry * phosgeom = AliPHOSLoader::GetPHOSGeometry(); |
7b7c1533 | 455 | |
d15a28e7 | 456 | Int_t iDigit; |
457 | ||
e5b16749 | 458 | |
d15a28e7 | 459 | for(iDigit=0; iDigit<fMulDigit; iDigit++) { |
7932f811 | 460 | digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ; |
d15a28e7 | 461 | Int_t relid[4] ; |
462 | Float_t xi ; | |
463 | Float_t zi ; | |
92862013 | 464 | phosgeom->AbsToRelNumbering(digit->GetId(), relid) ; |
465 | phosgeom->RelPosInModule(relid, xi, zi); | |
7932f811 | 466 | Double_t w = TMath::Max(0.,logWeight+TMath::Log(fEnergyList[iDigit]/fAmp ) ) ; |
92862013 | 467 | dxx += w * xi * xi ; |
d15a28e7 | 468 | x += w * xi ; |
92862013 | 469 | dzz += w * zi * zi ; |
d15a28e7 | 470 | z += w * zi ; |
92862013 | 471 | dxz += w * xi * zi ; |
d15a28e7 | 472 | wtot += w ; |
473 | } | |
92862013 | 474 | dxx /= wtot ; |
d15a28e7 | 475 | x /= wtot ; |
92862013 | 476 | dxx -= x * x ; |
477 | dzz /= wtot ; | |
d15a28e7 | 478 | z /= wtot ; |
92862013 | 479 | dzz -= z * z ; |
480 | dxz /= wtot ; | |
481 | dxz -= x * z ; | |
d15a28e7 | 482 | |
69183710 | 483 | // //Apply correction due to non-perpendicular incidence |
484 | // Double_t CosX ; | |
485 | // Double_t CosZ ; | |
88cb7938 | 486 | // AliPHOSGetter * gime = AliPHOSGetter::Instance() ; |
7b7c1533 | 487 | // AliPHOSGeometry * phosgeom = (AliPHOSGeometry*)gime->PHOSGeometry(); |
488 | // Double_t DistanceToIP= (Double_t ) phosgeom->GetIPtoCrystalSurface() ; | |
69183710 | 489 | |
490 | // CosX = DistanceToIP/TMath::Sqrt(DistanceToIP*DistanceToIP+x*x) ; | |
491 | // CosZ = DistanceToIP/TMath::Sqrt(DistanceToIP*DistanceToIP+z*z) ; | |
492 | ||
493 | // dxx = dxx/(CosX*CosX) ; | |
494 | // dzz = dzz/(CosZ*CosZ) ; | |
495 | // dxz = dxz/(CosX*CosZ) ; | |
496 | ||
497 | ||
7932f811 | 498 | fLambda[0] = 0.5 * (dxx + dzz) + TMath::Sqrt( 0.25 * (dxx - dzz) * (dxx - dzz) + dxz * dxz ) ; |
499 | if(fLambda[0] > 0) | |
500 | fLambda[0] = TMath::Sqrt(fLambda[0]) ; | |
e8dbb96e | 501 | |
7932f811 | 502 | fLambda[1] = 0.5 * (dxx + dzz) - TMath::Sqrt( 0.25 * (dxx - dzz) * (dxx - dzz) + dxz * dxz ) ; |
503 | if(fLambda[1] > 0) //To avoid exception if numerical errors lead to negative lambda. | |
504 | fLambda[1] = TMath::Sqrt(fLambda[1]) ; | |
e8dbb96e | 505 | else |
7932f811 | 506 | fLambda[1]= 0. ; |
d15a28e7 | 507 | } |
508 | ||
ce2a9a95 | 509 | //____________________________________________________________________________ |
510 | void AliPHOSEmcRecPoint::EvalMoments(Float_t logWeight,TClonesArray * digits) | |
511 | { | |
512 | // Calculate the shower moments in the eigen reference system | |
513 | // M2x, M2z, M3x, M4z | |
514 | // Calculate the angle between the shower position vector and the eigen vector | |
515 | ||
516 | Double_t wtot = 0. ; | |
517 | Double_t x = 0.; | |
518 | Double_t z = 0.; | |
519 | Double_t dxx = 0.; | |
520 | Double_t dzz = 0.; | |
521 | Double_t dxz = 0.; | |
522 | Double_t lambda0=0, lambda1=0; | |
523 | ||
524 | AliPHOSDigit * digit ; | |
525 | ||
88cb7938 | 526 | AliPHOSGeometry * phosgeom = AliPHOSLoader::GetPHOSGeometry(); |
ce2a9a95 | 527 | |
528 | Int_t iDigit; | |
529 | ||
530 | // 1) Find covariance matrix elements: | |
531 | // || dxx dxz || | |
532 | // || dxz dzz || | |
533 | ||
534 | Float_t xi ; | |
535 | Float_t zi ; | |
536 | Int_t relid[4] ; | |
537 | Double_t w; | |
538 | for(iDigit=0; iDigit<fMulDigit; iDigit++) { | |
539 | digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ; | |
540 | phosgeom->AbsToRelNumbering(digit->GetId(), relid) ; | |
541 | phosgeom->RelPosInModule(relid, xi, zi); | |
542 | w = TMath::Max(0.,logWeight+TMath::Log(fEnergyList[iDigit]/fAmp ) ) ; | |
543 | x += w * xi ; | |
544 | z += w * zi ; | |
545 | dxx += w * xi * xi ; | |
546 | dzz += w * zi * zi ; | |
547 | dxz += w * xi * zi ; | |
548 | wtot += w ; | |
549 | } | |
550 | x /= wtot ; | |
551 | z /= wtot ; | |
552 | dxx /= wtot ; | |
553 | dzz /= wtot ; | |
554 | dxz /= wtot ; | |
555 | dxx -= x * x ; | |
556 | dzz -= z * z ; | |
557 | dxz -= x * z ; | |
558 | ||
559 | // 2) Find covariance matrix eigen values lambda0 and lambda1 | |
560 | ||
561 | lambda0 = 0.5 * (dxx + dzz) + TMath::Sqrt( 0.25 * (dxx - dzz) * (dxx - dzz) + dxz * dxz ) ; | |
562 | lambda1 = 0.5 * (dxx + dzz) - TMath::Sqrt( 0.25 * (dxx - dzz) * (dxx - dzz) + dxz * dxz ) ; | |
563 | ||
564 | // 3) Find covariance matrix eigen vectors e0 and e1 | |
565 | ||
566 | TVector2 e0,e1; | |
567 | if (dxz != 0) | |
568 | e0.Set(1.,(lambda0-dxx)/dxz); | |
569 | else | |
570 | e0.Set(0.,1.); | |
571 | ||
572 | e0 = e0.Unit(); | |
573 | e1.Set(-e0.Y(),e0.X()); | |
574 | ||
575 | // 4) Rotate cluster tensor from (x,z) to (e0,e1) system | |
576 | // and calculate moments M3x and M4z | |
577 | ||
578 | Float_t cosPhi = e0.X(); | |
579 | Float_t sinPhi = e0.Y(); | |
580 | ||
581 | Float_t xiPHOS ; | |
582 | Float_t ziPHOS ; | |
583 | Double_t dx3, dz3, dz4; | |
584 | wtot = 0.; | |
585 | x = 0.; | |
586 | z = 0.; | |
587 | dxx = 0.; | |
588 | dzz = 0.; | |
589 | dxz = 0.; | |
590 | dx3 = 0.; | |
591 | dz3 = 0.; | |
592 | dz4 = 0.; | |
593 | for(iDigit=0; iDigit<fMulDigit; iDigit++) { | |
594 | digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ; | |
595 | phosgeom->AbsToRelNumbering(digit->GetId(), relid) ; | |
596 | phosgeom->RelPosInModule(relid, xiPHOS, ziPHOS); | |
597 | xi = xiPHOS*cosPhi + ziPHOS*sinPhi; | |
598 | zi = ziPHOS*cosPhi - xiPHOS*sinPhi; | |
599 | w = TMath::Max(0.,logWeight+TMath::Log(fEnergyList[iDigit]/fAmp ) ) ; | |
600 | x += w * xi ; | |
601 | z += w * zi ; | |
602 | dxx += w * xi * xi ; | |
603 | dzz += w * zi * zi ; | |
604 | dxz += w * xi * zi ; | |
605 | dx3 += w * xi * xi * xi; | |
606 | dz3 += w * zi * zi * zi ; | |
607 | dz4 += w * zi * zi * zi * zi ; | |
608 | wtot += w ; | |
609 | } | |
610 | x /= wtot ; | |
611 | z /= wtot ; | |
612 | dxx /= wtot ; | |
613 | dzz /= wtot ; | |
614 | dxz /= wtot ; | |
615 | dx3 /= wtot ; | |
616 | dz3 /= wtot ; | |
617 | dz4 /= wtot ; | |
618 | dx3 += -3*dxx*x + 2*x*x*x; | |
619 | dz4 += -4*dz3*z + 6*dzz*z*z -3*z*z*z*z; | |
620 | dxx -= x * x ; | |
621 | dzz -= z * z ; | |
622 | dxz -= x * z ; | |
623 | ||
624 | // 5) Find an angle between cluster center vector and eigen vector e0 | |
625 | ||
626 | Float_t phi = TMath::ACos ((x*e0.X() + z*e0.Y()) / sqrt(x*x + z*z)); | |
627 | ||
628 | fM2x = lambda0; | |
629 | fM2z = lambda1; | |
630 | fM3x = dx3; | |
631 | fM4z = dz4; | |
632 | fPhixe = phi; | |
633 | ||
634 | } | |
b2a60966 | 635 | //____________________________________________________________________________ |
7932f811 | 636 | void AliPHOSEmcRecPoint::EvalAll(Float_t logWeight, TClonesArray * digits ) |
ad8cfaf4 | 637 | { |
baef0810 | 638 | // Evaluates all shower parameters |
639 | ||
7932f811 | 640 | EvalLocalPosition(logWeight, digits) ; |
641 | EvalElipsAxis(logWeight, digits) ; | |
ce2a9a95 | 642 | EvalMoments(logWeight, digits) ; |
7932f811 | 643 | EvalDispersion(logWeight, digits) ; |
e5b16749 | 644 | EvalCoreEnergy(logWeight, digits); |
a6eedfad | 645 | EvalTime(digits) ; |
e957fea8 | 646 | AliPHOSRecPoint::EvalAll(digits) ; |
ad8cfaf4 | 647 | } |
648 | //____________________________________________________________________________ | |
7932f811 | 649 | void AliPHOSEmcRecPoint::EvalLocalPosition(Float_t logWeight, TClonesArray * digits) |
b2a60966 | 650 | { |
651 | // Calculates the center of gravity in the local PHOS-module coordinates | |
b2a60966 | 652 | Float_t wtot = 0. ; |
653 | ||
654 | Int_t relid[4] ; | |
655 | ||
656 | Float_t x = 0. ; | |
657 | Float_t z = 0. ; | |
658 | ||
659 | AliPHOSDigit * digit ; | |
660 | ||
88cb7938 | 661 | AliPHOSGeometry * phosgeom = AliPHOSLoader::GetPHOSGeometry(); |
b2a60966 | 662 | |
663 | Int_t iDigit; | |
664 | ||
b2a60966 | 665 | for(iDigit=0; iDigit<fMulDigit; iDigit++) { |
7932f811 | 666 | digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ; |
b2a60966 | 667 | |
668 | Float_t xi ; | |
669 | Float_t zi ; | |
670 | phosgeom->AbsToRelNumbering(digit->GetId(), relid) ; | |
671 | phosgeom->RelPosInModule(relid, xi, zi); | |
7932f811 | 672 | Float_t w = TMath::Max( 0., logWeight + TMath::Log( fEnergyList[iDigit] / fAmp ) ) ; |
b2a60966 | 673 | x += xi * w ; |
674 | z += zi * w ; | |
675 | wtot += w ; | |
b2a60966 | 676 | |
9ce1a8d9 | 677 | } |
69183710 | 678 | |
679 | x /= wtot ; | |
680 | z /= wtot ; | |
ad8cfaf4 | 681 | |
682 | // Correction for the depth of the shower starting point (TDR p 127) | |
683 | Float_t para = 0.925 ; | |
684 | Float_t parb = 6.52 ; | |
685 | ||
1b799736 | 686 | Float_t xo,yo,zo ; //Coordinates of the origin |
687 | gAlice->Generator()->GetOrigin(xo,yo,zo) ; | |
688 | ||
5830e1d9 | 689 | Float_t phi = phosgeom->GetPHOSAngle(relid[0]) ; |
1b799736 | 690 | |
691 | //Transform to the local ref.frame | |
692 | Float_t xoL,yoL ; | |
693 | xoL = xo*TMath::Cos(phi)-yo*TMath::Sin(phi) ; | |
694 | yoL = xo*TMath::Sin(phi)+yo*TMath::Cos(phi) ; | |
695 | ||
fd84cb73 | 696 | Float_t radius = phosgeom->GetIPtoCrystalSurface()-yoL; |
1b799736 | 697 | |
698 | Float_t incidencephi = TMath::ATan((x-xoL ) / radius) ; | |
699 | Float_t incidencetheta = TMath::ATan((z-zo) / radius) ; | |
ad8cfaf4 | 700 | |
701 | Float_t depthx = ( para * TMath::Log(fAmp) + parb ) * TMath::Sin(incidencephi) ; | |
702 | Float_t depthz = ( para * TMath::Log(fAmp) + parb ) * TMath::Sin(incidencetheta) ; | |
ad8cfaf4 | 703 | |
704 | fLocPos.SetX(x - depthx) ; | |
b2a60966 | 705 | fLocPos.SetY(0.) ; |
ad8cfaf4 | 706 | fLocPos.SetZ(z - depthz) ; |
b2a60966 | 707 | |
a6eedfad | 708 | fLocPosM = 0 ; |
b2a60966 | 709 | } |
710 | ||
d15a28e7 | 711 | //____________________________________________________________________________ |
ad8cfaf4 | 712 | Float_t AliPHOSEmcRecPoint::GetMaximalEnergy(void) const |
d15a28e7 | 713 | { |
b2a60966 | 714 | // Finds the maximum energy in the cluster |
715 | ||
d15a28e7 | 716 | Float_t menergy = 0. ; |
717 | ||
718 | Int_t iDigit; | |
719 | ||
720 | for(iDigit=0; iDigit<fMulDigit; iDigit++) { | |
721 | ||
722 | if(fEnergyList[iDigit] > menergy) | |
723 | menergy = fEnergyList[iDigit] ; | |
724 | } | |
725 | return menergy ; | |
726 | } | |
727 | ||
728 | //____________________________________________________________________________ | |
fc7e2f43 | 729 | Int_t AliPHOSEmcRecPoint::GetMultiplicityAtLevel(Float_t H) const |
d15a28e7 | 730 | { |
b2a60966 | 731 | // Calculates the multiplicity of digits with energy larger than H*energy |
732 | ||
d15a28e7 | 733 | Int_t multipl = 0 ; |
734 | Int_t iDigit ; | |
735 | for(iDigit=0; iDigit<fMulDigit; iDigit++) { | |
736 | ||
737 | if(fEnergyList[iDigit] > H * fAmp) | |
738 | multipl++ ; | |
739 | } | |
740 | return multipl ; | |
741 | } | |
742 | ||
743 | //____________________________________________________________________________ | |
a0636361 | 744 | Int_t AliPHOSEmcRecPoint::GetNumberOfLocalMax( AliPHOSDigit ** maxAt, Float_t * maxAtEnergy, |
7932f811 | 745 | Float_t locMaxCut,TClonesArray * digits) const |
d15a28e7 | 746 | { |
b2a60966 | 747 | // Calculates the number of local maxima in the cluster using fLocalMaxCut as the minimum |
a4e98857 | 748 | // energy difference between two local maxima |
b2a60966 | 749 | |
d15a28e7 | 750 | AliPHOSDigit * digit ; |
751 | AliPHOSDigit * digitN ; | |
752 | ||
753 | ||
754 | Int_t iDigitN ; | |
755 | Int_t iDigit ; | |
756 | ||
7932f811 | 757 | for(iDigit = 0; iDigit < fMulDigit; iDigit++) |
a0636361 | 758 | maxAt[iDigit] = (AliPHOSDigit*) digits->At(fDigitsList[iDigit]) ; |
7932f811 | 759 | |
d15a28e7 | 760 | |
6ad0bfa0 | 761 | for(iDigit = 0 ; iDigit < fMulDigit; iDigit++) { |
a0636361 | 762 | if(maxAt[iDigit]) { |
763 | digit = maxAt[iDigit] ; | |
83974468 | 764 | |
6ad0bfa0 | 765 | for(iDigitN = 0; iDigitN < fMulDigit; iDigitN++) { |
7932f811 | 766 | digitN = (AliPHOSDigit *) digits->At(fDigitsList[iDigitN]) ; |
d15a28e7 | 767 | |
9f616d61 | 768 | if ( AreNeighbours(digit, digitN) ) { |
d15a28e7 | 769 | if (fEnergyList[iDigit] > fEnergyList[iDigitN] ) { |
a0636361 | 770 | maxAt[iDigitN] = 0 ; |
6ad0bfa0 | 771 | // but may be digit too is not local max ? |
7932f811 | 772 | if(fEnergyList[iDigit] < fEnergyList[iDigitN] + locMaxCut) |
a0636361 | 773 | maxAt[iDigit] = 0 ; |
d15a28e7 | 774 | } |
775 | else { | |
a0636361 | 776 | maxAt[iDigit] = 0 ; |
6ad0bfa0 | 777 | // but may be digitN too is not local max ? |
7932f811 | 778 | if(fEnergyList[iDigit] > fEnergyList[iDigitN] - locMaxCut) |
a0636361 | 779 | maxAt[iDigitN] = 0 ; |
d15a28e7 | 780 | } |
781 | } // if Areneighbours | |
782 | } // while digitN | |
783 | } // slot not empty | |
784 | } // while digit | |
785 | ||
786 | iDigitN = 0 ; | |
6ad0bfa0 | 787 | for(iDigit = 0; iDigit < fMulDigit; iDigit++) { |
a0636361 | 788 | if(maxAt[iDigit]){ |
d15a28e7 | 789 | maxAt[iDigitN] = maxAt[iDigit] ; |
9f616d61 | 790 | maxAtEnergy[iDigitN] = fEnergyList[iDigit] ; |
791 | iDigitN++ ; | |
d15a28e7 | 792 | } |
793 | } | |
794 | return iDigitN ; | |
795 | } | |
9688c1dd | 796 | //____________________________________________________________________________ |
0bc3b8ed | 797 | void AliPHOSEmcRecPoint::EvalTime(TClonesArray * digits) |
798 | { | |
799 | // Define a rec.point time as a time in the cell with the maximum energy | |
800 | ||
9688c1dd | 801 | Float_t maxE = 0; |
802 | Int_t maxAt = 0; | |
803 | for(Int_t idig=0; idig < fMulDigit; idig++){ | |
804 | if(fEnergyList[idig] > maxE){ | |
805 | maxE = fEnergyList[idig] ; | |
806 | maxAt = idig; | |
807 | } | |
808 | } | |
809 | fTime = ((AliPHOSDigit*) digits->At(fDigitsList[maxAt]))->GetTime() ; | |
810 | ||
811 | } | |
d15a28e7 | 812 | //____________________________________________________________________________ |
092b50ba | 813 | void AliPHOSEmcRecPoint::Purify(Float_t threshold){ |
814 | //Removes digits below threshold | |
815 | ||
0fbb8738 | 816 | Int_t * tempo = new Int_t[fMaxDigit]; |
817 | Float_t * tempoE = new Float_t[fMaxDigit]; | |
092b50ba | 818 | |
819 | Int_t mult = 0 ; | |
820 | for(Int_t iDigit=0;iDigit< fMulDigit ;iDigit++){ | |
821 | if(fEnergyList[iDigit] > threshold){ | |
822 | tempo[mult] = fDigitsList[iDigit] ; | |
823 | tempoE[mult] = fEnergyList[iDigit] ; | |
824 | mult++ ; | |
825 | } | |
826 | } | |
827 | ||
828 | fMulDigit = mult ; | |
829 | delete [] fDigitsList ; | |
830 | delete [] fEnergyList ; | |
0fbb8738 | 831 | fDigitsList = new Int_t[fMulDigit]; |
832 | fEnergyList = new Float_t[fMulDigit]; | |
092b50ba | 833 | |
0458aa58 | 834 | fAmp = 0.; //Recalculate total energy |
092b50ba | 835 | for(Int_t iDigit=0;iDigit< fMulDigit ;iDigit++){ |
0458aa58 | 836 | fDigitsList[iDigit] = tempo[iDigit]; |
837 | fEnergyList[iDigit] = tempoE[iDigit] ; | |
838 | fAmp+=tempoE[iDigit]; | |
092b50ba | 839 | } |
840 | ||
841 | delete [] tempo ; | |
842 | delete [] tempoE ; | |
843 | ||
844 | } | |
845 | //____________________________________________________________________________ | |
a8c47ab6 | 846 | void AliPHOSEmcRecPoint::Print(Option_t *) const |
d15a28e7 | 847 | { |
b2a60966 | 848 | // Print the list of digits belonging to the cluster |
849 | ||
21cd0c07 | 850 | TString message ; |
851 | message = "AliPHOSEmcRecPoint:\n" ; | |
852 | message += " digits # = " ; | |
853 | Info("Print", message.Data()) ; | |
d15a28e7 | 854 | |
d15a28e7 | 855 | Int_t iDigit; |
7932f811 | 856 | for(iDigit=0; iDigit<fMulDigit; iDigit++) |
53ad38d8 | 857 | printf(" %d ", fDigitsList[iDigit] ) ; |
7932f811 | 858 | |
21cd0c07 | 859 | Info("Print", " Energies = ") ; |
7932f811 | 860 | for(iDigit=0; iDigit<fMulDigit; iDigit++) |
53ad38d8 | 861 | printf(" %f ", fEnergyList[iDigit] ) ; |
862 | printf("\n") ; | |
21cd0c07 | 863 | Info("Print", " Primaries ") ; |
bc68d12c | 864 | for(iDigit = 0;iDigit < fMulTrack; iDigit++) |
53ad38d8 | 865 | printf(" %d ", fTracksList[iDigit]) ; |
866 | printf("\n") ; | |
21cd0c07 | 867 | message = " Multiplicity = %d" ; |
868 | message += " Cluster Energy = %f" ; | |
869 | message += " Number of primaries %d" ; | |
870 | message += " Stored at position %d" ; | |
83974468 | 871 | |
21cd0c07 | 872 | Info("Print", message.Data(), fMulDigit, fAmp, fMulTrack,GetIndexInList() ) ; |
d15a28e7 | 873 | } |
88714635 | 874 | |
7932f811 | 875 |