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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 --- |
351dd634 | 34 | #include "AliLog.h" |
e957fea8 | 35 | #include "AliPHOSLoader.h" |
88cb7938 | 36 | #include "AliGenerator.h" |
d15a28e7 | 37 | #include "AliPHOSGeometry.h" |
e957fea8 | 38 | #include "AliPHOSDigit.h" |
d15a28e7 | 39 | #include "AliPHOSEmcRecPoint.h" |
e957fea8 | 40 | |
d15a28e7 | 41 | ClassImp(AliPHOSEmcRecPoint) |
42 | ||
43 | //____________________________________________________________________________ | |
7932f811 | 44 | AliPHOSEmcRecPoint::AliPHOSEmcRecPoint() : AliPHOSRecPoint() |
d15a28e7 | 45 | { |
46 | // ctor | |
47 | ||
48 | fMulDigit = 0 ; | |
49 | fAmp = 0. ; | |
7932f811 | 50 | fCoreEnergy = 0 ; |
51 | fEnergyList = 0 ; | |
94256c23 | 52 | fNExMax = 0 ; //Not unfolded yet |
9688c1dd | 53 | fTime = -1. ; |
a6eedfad | 54 | fLocPos.SetX(1000000.) ; //Local position should be evaluated |
ce2a9a95 | 55 | fDebug=0; |
7b7c1533 | 56 | |
83974468 | 57 | } |
58 | ||
73a68ccb | 59 | //____________________________________________________________________________ |
60 | AliPHOSEmcRecPoint::AliPHOSEmcRecPoint(const char * opt) : AliPHOSRecPoint(opt) | |
61 | { | |
62 | // ctor | |
63 | ||
64 | fMulDigit = 0 ; | |
65 | fAmp = 0. ; | |
94256c23 | 66 | fNExMax = 0 ; //Not unfolded yet |
73a68ccb | 67 | fCoreEnergy = 0 ; |
68 | fEnergyList = 0 ; | |
69 | fTime = -1. ; | |
70 | fLocPos.SetX(1000000.) ; //Local position should be evaluated | |
ce2a9a95 | 71 | fDebug=0; |
73a68ccb | 72 | |
73 | } | |
74 | ||
55fe9d13 | 75 | //____________________________________________________________________________ |
76 | AliPHOSEmcRecPoint::AliPHOSEmcRecPoint(const AliPHOSEmcRecPoint & rp) : AliPHOSRecPoint(rp) | |
77 | { | |
78 | // cpy ctor | |
79 | ||
80 | fMulDigit = rp.fMulDigit ; | |
81 | fAmp = rp.fAmp ; | |
82 | fCoreEnergy = rp.fCoreEnergy ; | |
83 | fEnergyList = new Float_t[rp.fMulDigit] ; | |
84 | Int_t index ; | |
85 | for(index = 0 ; index < fMulDigit ; index++) | |
86 | fEnergyList[index] = rp.fEnergyList[index] ; | |
87 | fNExMax = rp.fNExMax ; | |
88 | fTime = rp.fTime ; | |
89 | } | |
90 | ||
83974468 | 91 | //____________________________________________________________________________ |
92 | AliPHOSEmcRecPoint::~AliPHOSEmcRecPoint() | |
93 | { | |
88714635 | 94 | // dtor |
a4e98857 | 95 | |
83974468 | 96 | if ( fEnergyList ) |
97 | delete[] fEnergyList ; | |
d15a28e7 | 98 | } |
99 | ||
d15a28e7 | 100 | //____________________________________________________________________________ |
83974468 | 101 | void AliPHOSEmcRecPoint::AddDigit(AliPHOSDigit & digit, Float_t Energy) |
d15a28e7 | 102 | { |
b2a60966 | 103 | // Adds a digit to the RecPoint |
a4e98857 | 104 | // and accumulates the total amplitude and the multiplicity |
d15a28e7 | 105 | |
7932f811 | 106 | if(fEnergyList == 0) |
107 | fEnergyList = new Float_t[fMaxDigit]; | |
108 | ||
d15a28e7 | 109 | if ( fMulDigit >= fMaxDigit ) { // increase the size of the lists |
9f616d61 | 110 | fMaxDigit*=2 ; |
0fbb8738 | 111 | Int_t * tempo = new Int_t[fMaxDigit]; |
112 | Float_t * tempoE = new Float_t[fMaxDigit]; | |
9f616d61 | 113 | |
114 | Int_t index ; | |
d15a28e7 | 115 | for ( index = 0 ; index < fMulDigit ; index++ ){ |
83974468 | 116 | tempo[index] = fDigitsList[index] ; |
d15a28e7 | 117 | tempoE[index] = fEnergyList[index] ; |
118 | } | |
119 | ||
9f616d61 | 120 | delete [] fDigitsList ; |
0fbb8738 | 121 | fDigitsList = new Int_t[fMaxDigit]; |
9f616d61 | 122 | |
123 | delete [] fEnergyList ; | |
0fbb8738 | 124 | fEnergyList = new Float_t[fMaxDigit]; |
9f616d61 | 125 | |
126 | for ( index = 0 ; index < fMulDigit ; index++ ){ | |
127 | fDigitsList[index] = tempo[index] ; | |
128 | fEnergyList[index] = tempoE[index] ; | |
129 | } | |
130 | ||
131 | delete [] tempo ; | |
132 | delete [] tempoE ; | |
133 | } // if | |
d15a28e7 | 134 | |
83974468 | 135 | fDigitsList[fMulDigit] = digit.GetIndexInList() ; |
136 | fEnergyList[fMulDigit] = Energy ; | |
137 | fMulDigit++ ; | |
d15a28e7 | 138 | fAmp += Energy ; |
7932f811 | 139 | |
140 | EvalPHOSMod(&digit) ; | |
d15a28e7 | 141 | } |
142 | ||
143 | //____________________________________________________________________________ | |
ad8cfaf4 | 144 | Bool_t AliPHOSEmcRecPoint::AreNeighbours(AliPHOSDigit * digit1, AliPHOSDigit * digit2 ) const |
d15a28e7 | 145 | { |
a4e98857 | 146 | // Tells if (true) or not (false) two digits are neighbors |
d15a28e7 | 147 | |
148 | Bool_t aren = kFALSE ; | |
149 | ||
686b771f | 150 | AliPHOSGeometry * phosgeom = AliPHOSGeometry::GetInstance() ; |
7b7c1533 | 151 | |
d15a28e7 | 152 | Int_t relid1[4] ; |
92862013 | 153 | phosgeom->AbsToRelNumbering(digit1->GetId(), relid1) ; |
d15a28e7 | 154 | |
155 | Int_t relid2[4] ; | |
92862013 | 156 | phosgeom->AbsToRelNumbering(digit2->GetId(), relid2) ; |
d15a28e7 | 157 | |
92862013 | 158 | Int_t rowdiff = TMath::Abs( relid1[2] - relid2[2] ) ; |
159 | Int_t coldiff = TMath::Abs( relid1[3] - relid2[3] ) ; | |
d15a28e7 | 160 | |
92862013 | 161 | if (( coldiff <= 1 ) && ( rowdiff <= 1 ) && (coldiff + rowdiff > 0)) |
d15a28e7 | 162 | aren = kTRUE ; |
163 | ||
164 | return aren ; | |
165 | } | |
166 | ||
167 | //____________________________________________________________________________ | |
2a941f4e | 168 | Int_t AliPHOSEmcRecPoint::Compare(const TObject * obj) const |
d15a28e7 | 169 | { |
b2a60966 | 170 | // Compares two RecPoints according to their position in the PHOS modules |
686b771f | 171 | |
172 | const Float_t delta = 1 ; //Width of "Sorting row". If you changibg this | |
7932f811 | 173 | //value (what is senseless) change as vell delta in |
174 | //AliPHOSTrackSegmentMakerv* and other RecPoints... | |
d15a28e7 | 175 | Int_t rv ; |
176 | ||
177 | AliPHOSEmcRecPoint * clu = (AliPHOSEmcRecPoint *)obj ; | |
178 | ||
179 | ||
ad8cfaf4 | 180 | Int_t phosmod1 = GetPHOSMod() ; |
92862013 | 181 | Int_t phosmod2 = clu->GetPHOSMod() ; |
d15a28e7 | 182 | |
92862013 | 183 | TVector3 locpos1; |
7932f811 | 184 | GetLocalPosition(locpos1) ; |
92862013 | 185 | TVector3 locpos2; |
186 | clu->GetLocalPosition(locpos2) ; | |
d15a28e7 | 187 | |
92862013 | 188 | if(phosmod1 == phosmod2 ) { |
7932f811 | 189 | Int_t rowdif = (Int_t)TMath::Ceil(locpos1.X()/delta)-(Int_t)TMath::Ceil(locpos2.X()/delta) ; |
d15a28e7 | 190 | if (rowdif> 0) |
7932f811 | 191 | rv = 1 ; |
d15a28e7 | 192 | else if(rowdif < 0) |
7932f811 | 193 | rv = -1 ; |
92862013 | 194 | else if(locpos1.Z()>locpos2.Z()) |
d15a28e7 | 195 | rv = -1 ; |
196 | else | |
197 | rv = 1 ; | |
198 | } | |
199 | ||
200 | else { | |
92862013 | 201 | if(phosmod1 < phosmod2 ) |
d15a28e7 | 202 | rv = -1 ; |
203 | else | |
204 | rv = 1 ; | |
205 | } | |
206 | ||
207 | return rv ; | |
208 | } | |
9f616d61 | 209 | //______________________________________________________________________________ |
8f2a3661 | 210 | void AliPHOSEmcRecPoint::ExecuteEvent(Int_t event, Int_t, Int_t) const |
9f616d61 | 211 | { |
9f616d61 | 212 | |
9688c1dd | 213 | // Execute action corresponding to one event |
214 | // This member function is called when a AliPHOSRecPoint is clicked with the locator | |
215 | // | |
216 | // If Left button is clicked on AliPHOSRecPoint, the digits are switched on | |
217 | // and switched off when the mouse button is released. | |
218 | ||
88cb7938 | 219 | |
686b771f | 220 | AliPHOSGeometry * phosgeom = AliPHOSGeometry::GetInstance(); |
83974468 | 221 | |
9688c1dd | 222 | static TGraph * digitgraph = 0 ; |
83974468 | 223 | |
9688c1dd | 224 | if (!gPad->IsEditable()) return; |
83974468 | 225 | |
9688c1dd | 226 | TH2F * histo = 0 ; |
227 | TCanvas * histocanvas ; | |
228 | ||
88cb7938 | 229 | |
230 | //try to get run loader from default event folder | |
e191bb57 | 231 | AliRunLoader* rn = AliRunLoader::GetRunLoader(AliConfig::GetDefaultEventFolderName()); |
88cb7938 | 232 | if (rn == 0x0) |
233 | { | |
351dd634 | 234 | AliError(Form("Cannot find Run Loader in Default Event Folder")); |
88cb7938 | 235 | return; |
236 | } | |
237 | AliPHOSLoader* gime = dynamic_cast<AliPHOSLoader*>(rn->GetLoader("PHOSLoader")); | |
238 | if (gime == 0x0) | |
239 | { | |
351dd634 | 240 | AliError(Form("Cannot find PHOS Loader from Run Loader")); |
88cb7938 | 241 | return; |
242 | } | |
243 | ||
244 | ||
afa51c4e | 245 | const TClonesArray * digits = gime->Digits() ; |
9688c1dd | 246 | |
247 | switch (event) { | |
83974468 | 248 | |
9688c1dd | 249 | case kButton1Down: { |
250 | AliPHOSDigit * digit ; | |
251 | Int_t iDigit; | |
252 | Int_t relid[4] ; | |
83974468 | 253 | |
9688c1dd | 254 | const Int_t kMulDigit = AliPHOSEmcRecPoint::GetDigitsMultiplicity() ; |
255 | Float_t * xi = new Float_t[kMulDigit] ; | |
256 | Float_t * zi = new Float_t[kMulDigit] ; | |
83974468 | 257 | |
9688c1dd | 258 | // create the histogram for the single cluster |
259 | // 1. gets histogram boundaries | |
260 | Float_t ximax = -999. ; | |
261 | Float_t zimax = -999. ; | |
262 | Float_t ximin = 999. ; | |
263 | Float_t zimin = 999. ; | |
83974468 | 264 | |
9688c1dd | 265 | for(iDigit=0; iDigit<kMulDigit; iDigit++) { |
266 | digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ; | |
267 | phosgeom->AbsToRelNumbering(digit->GetId(), relid) ; | |
268 | phosgeom->RelPosInModule(relid, xi[iDigit], zi[iDigit]); | |
269 | if ( xi[iDigit] > ximax ) | |
270 | ximax = xi[iDigit] ; | |
271 | if ( xi[iDigit] < ximin ) | |
272 | ximin = xi[iDigit] ; | |
273 | if ( zi[iDigit] > zimax ) | |
274 | zimax = zi[iDigit] ; | |
275 | if ( zi[iDigit] < zimin ) | |
276 | zimin = zi[iDigit] ; | |
277 | } | |
278 | ximax += phosgeom->GetCrystalSize(0) / 2. ; | |
279 | zimax += phosgeom->GetCrystalSize(2) / 2. ; | |
280 | ximin -= phosgeom->GetCrystalSize(0) / 2. ; | |
281 | zimin -= phosgeom->GetCrystalSize(2) / 2. ; | |
282 | Int_t xdim = (int)( (ximax - ximin ) / phosgeom->GetCrystalSize(0) + 0.5 ) ; | |
283 | Int_t zdim = (int)( (zimax - zimin ) / phosgeom->GetCrystalSize(2) + 0.5 ) ; | |
83974468 | 284 | |
9688c1dd | 285 | // 2. gets the histogram title |
83974468 | 286 | |
9688c1dd | 287 | Text_t title[100] ; |
288 | sprintf(title,"Energy=%1.2f GeV ; Digits ; %d ", GetEnergy(), GetDigitsMultiplicity()) ; | |
83974468 | 289 | |
9688c1dd | 290 | if (!histo) { |
291 | delete histo ; | |
292 | histo = 0 ; | |
293 | } | |
294 | histo = new TH2F("cluster3D", title, xdim, ximin, ximax, zdim, zimin, zimax) ; | |
83974468 | 295 | |
9688c1dd | 296 | Float_t x, z ; |
297 | for(iDigit=0; iDigit<kMulDigit; iDigit++) { | |
298 | digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ; | |
299 | phosgeom->AbsToRelNumbering(digit->GetId(), relid) ; | |
300 | phosgeom->RelPosInModule(relid, x, z); | |
301 | histo->Fill(x, z, fEnergyList[iDigit] ) ; | |
302 | } | |
83974468 | 303 | |
9688c1dd | 304 | if (!digitgraph) { |
305 | digitgraph = new TGraph(kMulDigit,xi,zi); | |
306 | digitgraph-> SetMarkerStyle(5) ; | |
307 | digitgraph-> SetMarkerSize(1.) ; | |
308 | digitgraph-> SetMarkerColor(1) ; | |
309 | digitgraph-> Paint("P") ; | |
310 | } | |
83974468 | 311 | |
9688c1dd | 312 | // Print() ; |
313 | histocanvas = new TCanvas("cluster", "a single cluster", 600, 500) ; | |
314 | histocanvas->Draw() ; | |
315 | histo->Draw("lego1") ; | |
83974468 | 316 | |
9688c1dd | 317 | delete[] xi ; |
318 | delete[] zi ; | |
83974468 | 319 | |
9688c1dd | 320 | break; |
321 | } | |
83974468 | 322 | |
9688c1dd | 323 | case kButton1Up: |
324 | if (digitgraph) { | |
325 | delete digitgraph ; | |
326 | digitgraph = 0 ; | |
327 | } | |
328 | break; | |
9f616d61 | 329 | |
9688c1dd | 330 | } |
9f616d61 | 331 | } |
332 | ||
d15a28e7 | 333 | //____________________________________________________________________________ |
7932f811 | 334 | void AliPHOSEmcRecPoint::EvalDispersion(Float_t logWeight,TClonesArray * digits) |
d15a28e7 | 335 | { |
b2a60966 | 336 | // Calculates the dispersion of the shower at the origine of the RecPoint |
337 | ||
e5b16749 | 338 | Float_t d = 0. ; |
339 | Float_t wtot = 0. ; | |
d15a28e7 | 340 | |
d084d50d | 341 | Float_t x = 0.; |
342 | Float_t z = 0.; | |
d15a28e7 | 343 | |
344 | AliPHOSDigit * digit ; | |
7b7c1533 | 345 | |
686b771f | 346 | AliPHOSGeometry * phosgeom = AliPHOSGeometry::GetInstance(); |
e5b16749 | 347 | |
348 | // Calculates the center of gravity in the local PHOS-module coordinates | |
349 | ||
d15a28e7 | 350 | Int_t iDigit; |
e5b16749 | 351 | |
352 | for(iDigit=0; iDigit<fMulDigit; iDigit++) { | |
353 | digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ; | |
354 | Int_t relid[4] ; | |
355 | Float_t xi ; | |
356 | Float_t zi ; | |
357 | phosgeom->AbsToRelNumbering(digit->GetId(), relid) ; | |
358 | phosgeom->RelPosInModule(relid, xi, zi); | |
359 | Float_t w = TMath::Max( 0., logWeight + TMath::Log( fEnergyList[iDigit] / fAmp ) ) ; | |
360 | x += xi * w ; | |
361 | z += zi * w ; | |
362 | wtot += w ; | |
363 | } | |
364 | x /= wtot ; | |
365 | z /= wtot ; | |
366 | ||
367 | ||
368 | // Calculates the dispersion in coordinates | |
369 | wtot = 0.; | |
88714635 | 370 | for(iDigit=0; iDigit < fMulDigit; iDigit++) { |
7932f811 | 371 | digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ; |
d15a28e7 | 372 | Int_t relid[4] ; |
373 | Float_t xi ; | |
374 | Float_t zi ; | |
92862013 | 375 | phosgeom->AbsToRelNumbering(digit->GetId(), relid) ; |
376 | phosgeom->RelPosInModule(relid, xi, zi); | |
7932f811 | 377 | Float_t w = TMath::Max(0.,logWeight+TMath::Log(fEnergyList[iDigit]/fAmp ) ) ; |
92862013 | 378 | d += w*((xi-x)*(xi-x) + (zi-z)*(zi-z) ) ; |
d15a28e7 | 379 | wtot+=w ; |
d084d50d | 380 | |
381 | ||
d15a28e7 | 382 | } |
e5b16749 | 383 | |
7932f811 | 384 | |
92862013 | 385 | d /= wtot ; |
d15a28e7 | 386 | |
7932f811 | 387 | fDispersion = TMath::Sqrt(d) ; |
c63c49e9 | 388 | |
d15a28e7 | 389 | } |
fad3e5b9 | 390 | //______________________________________________________________________________ |
e5b16749 | 391 | void AliPHOSEmcRecPoint::EvalCoreEnergy(Float_t logWeight, TClonesArray * digits) |
fad3e5b9 | 392 | { |
a4e98857 | 393 | // This function calculates energy in the core, |
394 | // i.e. within a radius rad = 3cm around the center. Beyond this radius | |
395 | // in accordance with shower profile the energy deposition | |
fad3e5b9 | 396 | // should be less than 2% |
397 | ||
fad3e5b9 | 398 | Float_t coreRadius = 3 ; |
399 | ||
e5b16749 | 400 | Float_t x = 0 ; |
401 | Float_t z = 0 ; | |
fad3e5b9 | 402 | |
403 | AliPHOSDigit * digit ; | |
7b7c1533 | 404 | |
686b771f | 405 | AliPHOSGeometry * phosgeom = AliPHOSGeometry::GetInstance(); |
88cb7938 | 406 | |
fad3e5b9 | 407 | Int_t iDigit; |
e5b16749 | 408 | |
409 | // Calculates the center of gravity in the local PHOS-module coordinates | |
410 | Float_t wtot = 0; | |
411 | for(iDigit=0; iDigit<fMulDigit; iDigit++) { | |
412 | digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ; | |
413 | Int_t relid[4] ; | |
414 | Float_t xi ; | |
415 | Float_t zi ; | |
416 | phosgeom->AbsToRelNumbering(digit->GetId(), relid) ; | |
417 | phosgeom->RelPosInModule(relid, xi, zi); | |
418 | Float_t w = TMath::Max( 0., logWeight + TMath::Log( fEnergyList[iDigit] / fAmp ) ) ; | |
419 | x += xi * w ; | |
420 | z += zi * w ; | |
421 | wtot += w ; | |
422 | } | |
423 | x /= wtot ; | |
424 | z /= wtot ; | |
425 | ||
426 | ||
fad3e5b9 | 427 | for(iDigit=0; iDigit < fMulDigit; iDigit++) { |
7932f811 | 428 | digit = (AliPHOSDigit *) ( digits->At(fDigitsList[iDigit]) ) ; |
fad3e5b9 | 429 | Int_t relid[4] ; |
430 | Float_t xi ; | |
431 | Float_t zi ; | |
432 | phosgeom->AbsToRelNumbering(digit->GetId(), relid) ; | |
433 | phosgeom->RelPosInModule(relid, xi, zi); | |
434 | Float_t distance = TMath::Sqrt((xi-x)*(xi-x)+(zi-z)*(zi-z)) ; | |
435 | if(distance < coreRadius) | |
7932f811 | 436 | fCoreEnergy += fEnergyList[iDigit] ; |
fad3e5b9 | 437 | } |
438 | ||
fad3e5b9 | 439 | } |
d15a28e7 | 440 | |
441 | //____________________________________________________________________________ | |
7932f811 | 442 | void AliPHOSEmcRecPoint::EvalElipsAxis(Float_t logWeight,TClonesArray * digits) |
d15a28e7 | 443 | { |
b2a60966 | 444 | // Calculates the axis of the shower ellipsoid |
83974468 | 445 | |
e8dbb96e | 446 | Double_t wtot = 0. ; |
447 | Double_t x = 0.; | |
448 | Double_t z = 0.; | |
449 | Double_t dxx = 0.; | |
450 | Double_t dzz = 0.; | |
451 | Double_t dxz = 0.; | |
d15a28e7 | 452 | |
453 | AliPHOSDigit * digit ; | |
7b7c1533 | 454 | |
686b771f | 455 | AliPHOSGeometry * phosgeom = AliPHOSGeometry::GetInstance(); |
7b7c1533 | 456 | |
d15a28e7 | 457 | Int_t iDigit; |
458 | ||
e5b16749 | 459 | |
d15a28e7 | 460 | for(iDigit=0; iDigit<fMulDigit; iDigit++) { |
7932f811 | 461 | digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ; |
d15a28e7 | 462 | Int_t relid[4] ; |
463 | Float_t xi ; | |
464 | Float_t zi ; | |
92862013 | 465 | phosgeom->AbsToRelNumbering(digit->GetId(), relid) ; |
466 | phosgeom->RelPosInModule(relid, xi, zi); | |
7932f811 | 467 | Double_t w = TMath::Max(0.,logWeight+TMath::Log(fEnergyList[iDigit]/fAmp ) ) ; |
92862013 | 468 | dxx += w * xi * xi ; |
d15a28e7 | 469 | x += w * xi ; |
92862013 | 470 | dzz += w * zi * zi ; |
d15a28e7 | 471 | z += w * zi ; |
92862013 | 472 | dxz += w * xi * zi ; |
d15a28e7 | 473 | wtot += w ; |
474 | } | |
92862013 | 475 | dxx /= wtot ; |
d15a28e7 | 476 | x /= wtot ; |
92862013 | 477 | dxx -= x * x ; |
478 | dzz /= wtot ; | |
d15a28e7 | 479 | z /= wtot ; |
92862013 | 480 | dzz -= z * z ; |
481 | dxz /= wtot ; | |
482 | dxz -= x * z ; | |
d15a28e7 | 483 | |
69183710 | 484 | // //Apply correction due to non-perpendicular incidence |
485 | // Double_t CosX ; | |
486 | // Double_t CosZ ; | |
88cb7938 | 487 | // AliPHOSGetter * gime = AliPHOSGetter::Instance() ; |
7b7c1533 | 488 | // AliPHOSGeometry * phosgeom = (AliPHOSGeometry*)gime->PHOSGeometry(); |
489 | // Double_t DistanceToIP= (Double_t ) phosgeom->GetIPtoCrystalSurface() ; | |
69183710 | 490 | |
491 | // CosX = DistanceToIP/TMath::Sqrt(DistanceToIP*DistanceToIP+x*x) ; | |
492 | // CosZ = DistanceToIP/TMath::Sqrt(DistanceToIP*DistanceToIP+z*z) ; | |
493 | ||
494 | // dxx = dxx/(CosX*CosX) ; | |
495 | // dzz = dzz/(CosZ*CosZ) ; | |
496 | // dxz = dxz/(CosX*CosZ) ; | |
497 | ||
498 | ||
7932f811 | 499 | fLambda[0] = 0.5 * (dxx + dzz) + TMath::Sqrt( 0.25 * (dxx - dzz) * (dxx - dzz) + dxz * dxz ) ; |
500 | if(fLambda[0] > 0) | |
501 | fLambda[0] = TMath::Sqrt(fLambda[0]) ; | |
e8dbb96e | 502 | |
7932f811 | 503 | fLambda[1] = 0.5 * (dxx + dzz) - TMath::Sqrt( 0.25 * (dxx - dzz) * (dxx - dzz) + dxz * dxz ) ; |
504 | if(fLambda[1] > 0) //To avoid exception if numerical errors lead to negative lambda. | |
505 | fLambda[1] = TMath::Sqrt(fLambda[1]) ; | |
e8dbb96e | 506 | else |
7932f811 | 507 | fLambda[1]= 0. ; |
d15a28e7 | 508 | } |
509 | ||
ce2a9a95 | 510 | //____________________________________________________________________________ |
511 | void AliPHOSEmcRecPoint::EvalMoments(Float_t logWeight,TClonesArray * digits) | |
512 | { | |
513 | // Calculate the shower moments in the eigen reference system | |
514 | // M2x, M2z, M3x, M4z | |
515 | // Calculate the angle between the shower position vector and the eigen vector | |
516 | ||
517 | Double_t wtot = 0. ; | |
518 | Double_t x = 0.; | |
519 | Double_t z = 0.; | |
520 | Double_t dxx = 0.; | |
521 | Double_t dzz = 0.; | |
522 | Double_t dxz = 0.; | |
523 | Double_t lambda0=0, lambda1=0; | |
524 | ||
525 | AliPHOSDigit * digit ; | |
526 | ||
686b771f | 527 | AliPHOSGeometry * phosgeom = AliPHOSGeometry::GetInstance() ; |
ce2a9a95 | 528 | |
529 | Int_t iDigit; | |
530 | ||
531 | // 1) Find covariance matrix elements: | |
532 | // || dxx dxz || | |
533 | // || dxz dzz || | |
534 | ||
535 | Float_t xi ; | |
536 | Float_t zi ; | |
537 | Int_t relid[4] ; | |
538 | Double_t w; | |
539 | for(iDigit=0; iDigit<fMulDigit; iDigit++) { | |
540 | digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ; | |
541 | phosgeom->AbsToRelNumbering(digit->GetId(), relid) ; | |
542 | phosgeom->RelPosInModule(relid, xi, zi); | |
543 | w = TMath::Max(0.,logWeight+TMath::Log(fEnergyList[iDigit]/fAmp ) ) ; | |
544 | x += w * xi ; | |
545 | z += w * zi ; | |
546 | dxx += w * xi * xi ; | |
547 | dzz += w * zi * zi ; | |
548 | dxz += w * xi * zi ; | |
549 | wtot += w ; | |
550 | } | |
551 | x /= wtot ; | |
552 | z /= wtot ; | |
553 | dxx /= wtot ; | |
554 | dzz /= wtot ; | |
555 | dxz /= wtot ; | |
556 | dxx -= x * x ; | |
557 | dzz -= z * z ; | |
558 | dxz -= x * z ; | |
559 | ||
560 | // 2) Find covariance matrix eigen values lambda0 and lambda1 | |
561 | ||
562 | lambda0 = 0.5 * (dxx + dzz) + TMath::Sqrt( 0.25 * (dxx - dzz) * (dxx - dzz) + dxz * dxz ) ; | |
563 | lambda1 = 0.5 * (dxx + dzz) - TMath::Sqrt( 0.25 * (dxx - dzz) * (dxx - dzz) + dxz * dxz ) ; | |
564 | ||
565 | // 3) Find covariance matrix eigen vectors e0 and e1 | |
566 | ||
567 | TVector2 e0,e1; | |
568 | if (dxz != 0) | |
569 | e0.Set(1.,(lambda0-dxx)/dxz); | |
570 | else | |
571 | e0.Set(0.,1.); | |
572 | ||
573 | e0 = e0.Unit(); | |
574 | e1.Set(-e0.Y(),e0.X()); | |
575 | ||
576 | // 4) Rotate cluster tensor from (x,z) to (e0,e1) system | |
577 | // and calculate moments M3x and M4z | |
578 | ||
579 | Float_t cosPhi = e0.X(); | |
580 | Float_t sinPhi = e0.Y(); | |
581 | ||
582 | Float_t xiPHOS ; | |
583 | Float_t ziPHOS ; | |
584 | Double_t dx3, dz3, dz4; | |
585 | wtot = 0.; | |
586 | x = 0.; | |
587 | z = 0.; | |
588 | dxx = 0.; | |
589 | dzz = 0.; | |
590 | dxz = 0.; | |
591 | dx3 = 0.; | |
592 | dz3 = 0.; | |
593 | dz4 = 0.; | |
594 | for(iDigit=0; iDigit<fMulDigit; iDigit++) { | |
595 | digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ; | |
596 | phosgeom->AbsToRelNumbering(digit->GetId(), relid) ; | |
597 | phosgeom->RelPosInModule(relid, xiPHOS, ziPHOS); | |
598 | xi = xiPHOS*cosPhi + ziPHOS*sinPhi; | |
599 | zi = ziPHOS*cosPhi - xiPHOS*sinPhi; | |
600 | w = TMath::Max(0.,logWeight+TMath::Log(fEnergyList[iDigit]/fAmp ) ) ; | |
601 | x += w * xi ; | |
602 | z += w * zi ; | |
603 | dxx += w * xi * xi ; | |
604 | dzz += w * zi * zi ; | |
605 | dxz += w * xi * zi ; | |
606 | dx3 += w * xi * xi * xi; | |
607 | dz3 += w * zi * zi * zi ; | |
608 | dz4 += w * zi * zi * zi * zi ; | |
609 | wtot += w ; | |
610 | } | |
611 | x /= wtot ; | |
612 | z /= wtot ; | |
613 | dxx /= wtot ; | |
614 | dzz /= wtot ; | |
615 | dxz /= wtot ; | |
616 | dx3 /= wtot ; | |
617 | dz3 /= wtot ; | |
618 | dz4 /= wtot ; | |
619 | dx3 += -3*dxx*x + 2*x*x*x; | |
620 | dz4 += -4*dz3*z + 6*dzz*z*z -3*z*z*z*z; | |
621 | dxx -= x * x ; | |
622 | dzz -= z * z ; | |
623 | dxz -= x * z ; | |
624 | ||
625 | // 5) Find an angle between cluster center vector and eigen vector e0 | |
626 | ||
627 | Float_t phi = TMath::ACos ((x*e0.X() + z*e0.Y()) / sqrt(x*x + z*z)); | |
628 | ||
629 | fM2x = lambda0; | |
630 | fM2z = lambda1; | |
631 | fM3x = dx3; | |
632 | fM4z = dz4; | |
633 | fPhixe = phi; | |
634 | ||
635 | } | |
b2a60966 | 636 | //____________________________________________________________________________ |
7932f811 | 637 | void AliPHOSEmcRecPoint::EvalAll(Float_t logWeight, TClonesArray * digits ) |
ad8cfaf4 | 638 | { |
baef0810 | 639 | // Evaluates all shower parameters |
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 | ||
686b771f | 661 | AliPHOSGeometry * phosgeom = AliPHOSGeometry::GetInstance() ; |
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 | x /= wtot ; |
679 | z /= wtot ; | |
ad8cfaf4 | 680 | |
681 | // Correction for the depth of the shower starting point (TDR p 127) | |
682 | Float_t para = 0.925 ; | |
683 | Float_t parb = 6.52 ; | |
684 | ||
1b799736 | 685 | Float_t xo,yo,zo ; //Coordinates of the origin |
686b771f | 686 | //We should check all 3 possibilities to avoid seg.v. |
687 | if(gAlice && gAlice->GetMCApp() && gAlice->Generator()) | |
688 | gAlice->Generator()->GetOrigin(xo,yo,zo) ; | |
689 | else{ | |
690 | xo=yo=zo=0.; | |
691 | } | |
5830e1d9 | 692 | Float_t phi = phosgeom->GetPHOSAngle(relid[0]) ; |
1b799736 | 693 | |
694 | //Transform to the local ref.frame | |
695 | Float_t xoL,yoL ; | |
696 | xoL = xo*TMath::Cos(phi)-yo*TMath::Sin(phi) ; | |
697 | yoL = xo*TMath::Sin(phi)+yo*TMath::Cos(phi) ; | |
698 | ||
fd84cb73 | 699 | Float_t radius = phosgeom->GetIPtoCrystalSurface()-yoL; |
1b799736 | 700 | |
701 | Float_t incidencephi = TMath::ATan((x-xoL ) / radius) ; | |
702 | Float_t incidencetheta = TMath::ATan((z-zo) / radius) ; | |
ad8cfaf4 | 703 | |
704 | Float_t depthx = ( para * TMath::Log(fAmp) + parb ) * TMath::Sin(incidencephi) ; | |
705 | Float_t depthz = ( para * TMath::Log(fAmp) + parb ) * TMath::Sin(incidencetheta) ; | |
ad8cfaf4 | 706 | |
707 | fLocPos.SetX(x - depthx) ; | |
b2a60966 | 708 | fLocPos.SetY(0.) ; |
ad8cfaf4 | 709 | fLocPos.SetZ(z - depthz) ; |
b2a60966 | 710 | |
a6eedfad | 711 | fLocPosM = 0 ; |
b2a60966 | 712 | } |
713 | ||
d15a28e7 | 714 | //____________________________________________________________________________ |
ad8cfaf4 | 715 | Float_t AliPHOSEmcRecPoint::GetMaximalEnergy(void) const |
d15a28e7 | 716 | { |
b2a60966 | 717 | // Finds the maximum energy in the cluster |
718 | ||
d15a28e7 | 719 | Float_t menergy = 0. ; |
720 | ||
721 | Int_t iDigit; | |
722 | ||
723 | for(iDigit=0; iDigit<fMulDigit; iDigit++) { | |
724 | ||
725 | if(fEnergyList[iDigit] > menergy) | |
726 | menergy = fEnergyList[iDigit] ; | |
727 | } | |
728 | return menergy ; | |
729 | } | |
730 | ||
731 | //____________________________________________________________________________ | |
fc7e2f43 | 732 | Int_t AliPHOSEmcRecPoint::GetMultiplicityAtLevel(Float_t H) const |
d15a28e7 | 733 | { |
b2a60966 | 734 | // Calculates the multiplicity of digits with energy larger than H*energy |
735 | ||
d15a28e7 | 736 | Int_t multipl = 0 ; |
737 | Int_t iDigit ; | |
738 | for(iDigit=0; iDigit<fMulDigit; iDigit++) { | |
739 | ||
740 | if(fEnergyList[iDigit] > H * fAmp) | |
741 | multipl++ ; | |
742 | } | |
743 | return multipl ; | |
744 | } | |
745 | ||
746 | //____________________________________________________________________________ | |
a0636361 | 747 | Int_t AliPHOSEmcRecPoint::GetNumberOfLocalMax( AliPHOSDigit ** maxAt, Float_t * maxAtEnergy, |
7932f811 | 748 | Float_t locMaxCut,TClonesArray * digits) const |
d15a28e7 | 749 | { |
b2a60966 | 750 | // Calculates the number of local maxima in the cluster using fLocalMaxCut as the minimum |
a4e98857 | 751 | // energy difference between two local maxima |
b2a60966 | 752 | |
d15a28e7 | 753 | AliPHOSDigit * digit ; |
754 | AliPHOSDigit * digitN ; | |
755 | ||
756 | ||
757 | Int_t iDigitN ; | |
758 | Int_t iDigit ; | |
759 | ||
7932f811 | 760 | for(iDigit = 0; iDigit < fMulDigit; iDigit++) |
a0636361 | 761 | maxAt[iDigit] = (AliPHOSDigit*) digits->At(fDigitsList[iDigit]) ; |
7932f811 | 762 | |
d15a28e7 | 763 | |
6ad0bfa0 | 764 | for(iDigit = 0 ; iDigit < fMulDigit; iDigit++) { |
a0636361 | 765 | if(maxAt[iDigit]) { |
766 | digit = maxAt[iDigit] ; | |
83974468 | 767 | |
6ad0bfa0 | 768 | for(iDigitN = 0; iDigitN < fMulDigit; iDigitN++) { |
686b771f | 769 | if(iDigit == iDigitN) |
770 | continue ; | |
771 | ||
7932f811 | 772 | digitN = (AliPHOSDigit *) digits->At(fDigitsList[iDigitN]) ; |
d15a28e7 | 773 | |
9f616d61 | 774 | if ( AreNeighbours(digit, digitN) ) { |
d15a28e7 | 775 | if (fEnergyList[iDigit] > fEnergyList[iDigitN] ) { |
a0636361 | 776 | maxAt[iDigitN] = 0 ; |
6ad0bfa0 | 777 | // but may be digit too is not local max ? |
7932f811 | 778 | if(fEnergyList[iDigit] < fEnergyList[iDigitN] + locMaxCut) |
a0636361 | 779 | maxAt[iDigit] = 0 ; |
d15a28e7 | 780 | } |
781 | else { | |
a0636361 | 782 | maxAt[iDigit] = 0 ; |
6ad0bfa0 | 783 | // but may be digitN too is not local max ? |
7932f811 | 784 | if(fEnergyList[iDigit] > fEnergyList[iDigitN] - locMaxCut) |
a0636361 | 785 | maxAt[iDigitN] = 0 ; |
d15a28e7 | 786 | } |
787 | } // if Areneighbours | |
788 | } // while digitN | |
789 | } // slot not empty | |
790 | } // while digit | |
791 | ||
792 | iDigitN = 0 ; | |
6ad0bfa0 | 793 | for(iDigit = 0; iDigit < fMulDigit; iDigit++) { |
a0636361 | 794 | if(maxAt[iDigit]){ |
d15a28e7 | 795 | maxAt[iDigitN] = maxAt[iDigit] ; |
9f616d61 | 796 | maxAtEnergy[iDigitN] = fEnergyList[iDigit] ; |
797 | iDigitN++ ; | |
d15a28e7 | 798 | } |
799 | } | |
800 | return iDigitN ; | |
801 | } | |
9688c1dd | 802 | //____________________________________________________________________________ |
0bc3b8ed | 803 | void AliPHOSEmcRecPoint::EvalTime(TClonesArray * digits) |
804 | { | |
805 | // Define a rec.point time as a time in the cell with the maximum energy | |
806 | ||
9688c1dd | 807 | Float_t maxE = 0; |
808 | Int_t maxAt = 0; | |
809 | for(Int_t idig=0; idig < fMulDigit; idig++){ | |
810 | if(fEnergyList[idig] > maxE){ | |
811 | maxE = fEnergyList[idig] ; | |
812 | maxAt = idig; | |
813 | } | |
814 | } | |
815 | fTime = ((AliPHOSDigit*) digits->At(fDigitsList[maxAt]))->GetTime() ; | |
816 | ||
817 | } | |
d15a28e7 | 818 | //____________________________________________________________________________ |
092b50ba | 819 | void AliPHOSEmcRecPoint::Purify(Float_t threshold){ |
820 | //Removes digits below threshold | |
821 | ||
0fbb8738 | 822 | Int_t * tempo = new Int_t[fMaxDigit]; |
823 | Float_t * tempoE = new Float_t[fMaxDigit]; | |
092b50ba | 824 | |
825 | Int_t mult = 0 ; | |
826 | for(Int_t iDigit=0;iDigit< fMulDigit ;iDigit++){ | |
827 | if(fEnergyList[iDigit] > threshold){ | |
828 | tempo[mult] = fDigitsList[iDigit] ; | |
829 | tempoE[mult] = fEnergyList[iDigit] ; | |
830 | mult++ ; | |
831 | } | |
832 | } | |
833 | ||
834 | fMulDigit = mult ; | |
835 | delete [] fDigitsList ; | |
836 | delete [] fEnergyList ; | |
0fbb8738 | 837 | fDigitsList = new Int_t[fMulDigit]; |
838 | fEnergyList = new Float_t[fMulDigit]; | |
092b50ba | 839 | |
0458aa58 | 840 | fAmp = 0.; //Recalculate total energy |
092b50ba | 841 | for(Int_t iDigit=0;iDigit< fMulDigit ;iDigit++){ |
0458aa58 | 842 | fDigitsList[iDigit] = tempo[iDigit]; |
843 | fEnergyList[iDigit] = tempoE[iDigit] ; | |
844 | fAmp+=tempoE[iDigit]; | |
092b50ba | 845 | } |
846 | ||
847 | delete [] tempo ; | |
848 | delete [] tempoE ; | |
849 | ||
850 | } | |
851 | //____________________________________________________________________________ | |
a8c47ab6 | 852 | void AliPHOSEmcRecPoint::Print(Option_t *) const |
d15a28e7 | 853 | { |
b2a60966 | 854 | // Print the list of digits belonging to the cluster |
855 | ||
21cd0c07 | 856 | TString message ; |
857 | message = "AliPHOSEmcRecPoint:\n" ; | |
858 | message += " digits # = " ; | |
351dd634 | 859 | AliInfo(Form(message.Data())) ; |
d15a28e7 | 860 | |
d15a28e7 | 861 | Int_t iDigit; |
7932f811 | 862 | for(iDigit=0; iDigit<fMulDigit; iDigit++) |
53ad38d8 | 863 | printf(" %d ", fDigitsList[iDigit] ) ; |
7932f811 | 864 | |
351dd634 | 865 | printf(" Energies = ") ; |
7932f811 | 866 | for(iDigit=0; iDigit<fMulDigit; iDigit++) |
53ad38d8 | 867 | printf(" %f ", fEnergyList[iDigit] ) ; |
868 | printf("\n") ; | |
351dd634 | 869 | printf(" Primaries ") ; |
bc68d12c | 870 | for(iDigit = 0;iDigit < fMulTrack; iDigit++) |
53ad38d8 | 871 | printf(" %d ", fTracksList[iDigit]) ; |
872 | printf("\n") ; | |
21cd0c07 | 873 | message = " Multiplicity = %d" ; |
874 | message += " Cluster Energy = %f" ; | |
875 | message += " Number of primaries %d" ; | |
876 | message += " Stored at position %d" ; | |
83974468 | 877 | |
351dd634 | 878 | printf(message.Data(), fMulDigit, fAmp, fMulTrack,GetIndexInList() ) ; |
d15a28e7 | 879 | } |
88714635 | 880 | |
7932f811 | 881 |