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d15a28e7 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
b2a60966 | 16 | /* $Id$ */ |
17 | ||
d15a28e7 | 18 | //_________________________________________________________________________ |
b2a60966 | 19 | // RecPoint implementation for PHOS-EMC |
20 | // An EmcRecPoint is a cluster of digits | |
baef0810 | 21 | //*-- |
b2a60966 | 22 | //*-- Author: Dmitri Peressounko (RRC KI & SUBATECH) |
23 | ||
d15a28e7 | 24 | |
25 | // --- ROOT system --- | |
9f616d61 | 26 | #include "TPad.h" |
27 | #include "TH2.h" | |
d15a28e7 | 28 | #include "TMath.h" |
9f616d61 | 29 | #include "TCanvas.h" |
55fe9d13 | 30 | #include "TGraph.h" |
d15a28e7 | 31 | |
32 | // --- Standard library --- | |
33 | ||
d15a28e7 | 34 | // --- AliRoot header files --- |
35 | ||
88cb7938 | 36 | #include "AliGenerator.h" |
d15a28e7 | 37 | #include "AliPHOSGeometry.h" |
38 | #include "AliPHOSEmcRecPoint.h" | |
39 | #include "AliRun.h" | |
7b7c1533 | 40 | #include "AliPHOSGetter.h" |
d15a28e7 | 41 | |
42 | ClassImp(AliPHOSEmcRecPoint) | |
43 | ||
44 | //____________________________________________________________________________ | |
7932f811 | 45 | AliPHOSEmcRecPoint::AliPHOSEmcRecPoint() : AliPHOSRecPoint() |
d15a28e7 | 46 | { |
47 | // ctor | |
48 | ||
49 | fMulDigit = 0 ; | |
50 | fAmp = 0. ; | |
7932f811 | 51 | fCoreEnergy = 0 ; |
52 | fEnergyList = 0 ; | |
94256c23 | 53 | fNExMax = 0 ; //Not unfolded yet |
9688c1dd | 54 | fTime = -1. ; |
a6eedfad | 55 | fLocPos.SetX(1000000.) ; //Local position should be evaluated |
ce2a9a95 | 56 | fDebug=0; |
7b7c1533 | 57 | |
83974468 | 58 | } |
59 | ||
73a68ccb | 60 | //____________________________________________________________________________ |
61 | AliPHOSEmcRecPoint::AliPHOSEmcRecPoint(const char * opt) : AliPHOSRecPoint(opt) | |
62 | { | |
63 | // ctor | |
64 | ||
65 | fMulDigit = 0 ; | |
66 | fAmp = 0. ; | |
94256c23 | 67 | fNExMax = 0 ; //Not unfolded yet |
73a68ccb | 68 | fCoreEnergy = 0 ; |
69 | fEnergyList = 0 ; | |
70 | fTime = -1. ; | |
71 | fLocPos.SetX(1000000.) ; //Local position should be evaluated | |
ce2a9a95 | 72 | fDebug=0; |
73a68ccb | 73 | |
74 | } | |
75 | ||
55fe9d13 | 76 | //____________________________________________________________________________ |
77 | AliPHOSEmcRecPoint::AliPHOSEmcRecPoint(const AliPHOSEmcRecPoint & rp) : AliPHOSRecPoint(rp) | |
78 | { | |
79 | // cpy ctor | |
80 | ||
81 | fMulDigit = rp.fMulDigit ; | |
82 | fAmp = rp.fAmp ; | |
83 | fCoreEnergy = rp.fCoreEnergy ; | |
84 | fEnergyList = new Float_t[rp.fMulDigit] ; | |
85 | Int_t index ; | |
86 | for(index = 0 ; index < fMulDigit ; index++) | |
87 | fEnergyList[index] = rp.fEnergyList[index] ; | |
88 | fNExMax = rp.fNExMax ; | |
89 | fTime = rp.fTime ; | |
90 | } | |
91 | ||
83974468 | 92 | //____________________________________________________________________________ |
93 | AliPHOSEmcRecPoint::~AliPHOSEmcRecPoint() | |
94 | { | |
88714635 | 95 | // dtor |
a4e98857 | 96 | |
83974468 | 97 | if ( fEnergyList ) |
98 | delete[] fEnergyList ; | |
d15a28e7 | 99 | } |
100 | ||
d15a28e7 | 101 | //____________________________________________________________________________ |
83974468 | 102 | void AliPHOSEmcRecPoint::AddDigit(AliPHOSDigit & digit, Float_t Energy) |
d15a28e7 | 103 | { |
b2a60966 | 104 | // Adds a digit to the RecPoint |
a4e98857 | 105 | // and accumulates the total amplitude and the multiplicity |
d15a28e7 | 106 | |
7932f811 | 107 | if(fEnergyList == 0) |
108 | fEnergyList = new Float_t[fMaxDigit]; | |
109 | ||
d15a28e7 | 110 | if ( fMulDigit >= fMaxDigit ) { // increase the size of the lists |
9f616d61 | 111 | fMaxDigit*=2 ; |
83974468 | 112 | Int_t * tempo = new ( Int_t[fMaxDigit] ) ; |
9f616d61 | 113 | Float_t * tempoE = new ( Float_t[fMaxDigit] ) ; |
114 | ||
115 | Int_t index ; | |
d15a28e7 | 116 | for ( index = 0 ; index < fMulDigit ; index++ ){ |
83974468 | 117 | tempo[index] = fDigitsList[index] ; |
d15a28e7 | 118 | tempoE[index] = fEnergyList[index] ; |
119 | } | |
120 | ||
9f616d61 | 121 | delete [] fDigitsList ; |
83974468 | 122 | fDigitsList = new ( Int_t[fMaxDigit] ) ; |
9f616d61 | 123 | |
124 | delete [] fEnergyList ; | |
125 | fEnergyList = new ( Float_t[fMaxDigit] ) ; | |
126 | ||
127 | for ( index = 0 ; index < fMulDigit ; index++ ){ | |
128 | fDigitsList[index] = tempo[index] ; | |
129 | fEnergyList[index] = tempoE[index] ; | |
130 | } | |
131 | ||
132 | delete [] tempo ; | |
133 | delete [] tempoE ; | |
134 | } // if | |
d15a28e7 | 135 | |
83974468 | 136 | fDigitsList[fMulDigit] = digit.GetIndexInList() ; |
137 | fEnergyList[fMulDigit] = Energy ; | |
138 | fMulDigit++ ; | |
d15a28e7 | 139 | fAmp += Energy ; |
7932f811 | 140 | |
141 | EvalPHOSMod(&digit) ; | |
d15a28e7 | 142 | } |
143 | ||
144 | //____________________________________________________________________________ | |
ad8cfaf4 | 145 | Bool_t AliPHOSEmcRecPoint::AreNeighbours(AliPHOSDigit * digit1, AliPHOSDigit * digit2 ) const |
d15a28e7 | 146 | { |
a4e98857 | 147 | // Tells if (true) or not (false) two digits are neighbors |
d15a28e7 | 148 | |
149 | Bool_t aren = kFALSE ; | |
150 | ||
88cb7938 | 151 | AliPHOSGeometry * phosgeom = AliPHOSLoader::GetPHOSGeometry(); |
7b7c1533 | 152 | |
d15a28e7 | 153 | Int_t relid1[4] ; |
92862013 | 154 | phosgeom->AbsToRelNumbering(digit1->GetId(), relid1) ; |
d15a28e7 | 155 | |
156 | Int_t relid2[4] ; | |
92862013 | 157 | phosgeom->AbsToRelNumbering(digit2->GetId(), relid2) ; |
d15a28e7 | 158 | |
92862013 | 159 | Int_t rowdiff = TMath::Abs( relid1[2] - relid2[2] ) ; |
160 | Int_t coldiff = TMath::Abs( relid1[3] - relid2[3] ) ; | |
d15a28e7 | 161 | |
92862013 | 162 | if (( coldiff <= 1 ) && ( rowdiff <= 1 ) && (coldiff + rowdiff > 0)) |
d15a28e7 | 163 | aren = kTRUE ; |
164 | ||
165 | return aren ; | |
166 | } | |
167 | ||
168 | //____________________________________________________________________________ | |
2a941f4e | 169 | Int_t AliPHOSEmcRecPoint::Compare(const TObject * obj) const |
d15a28e7 | 170 | { |
b2a60966 | 171 | // Compares two RecPoints according to their position in the PHOS modules |
172 | ||
7932f811 | 173 | Float_t delta = 1 ; //Width of "Sorting row". If you changibg this |
174 | //value (what is senseless) change as vell delta in | |
175 | //AliPHOSTrackSegmentMakerv* and other RecPoints... | |
d15a28e7 | 176 | Int_t rv ; |
177 | ||
178 | AliPHOSEmcRecPoint * clu = (AliPHOSEmcRecPoint *)obj ; | |
179 | ||
180 | ||
ad8cfaf4 | 181 | Int_t phosmod1 = GetPHOSMod() ; |
92862013 | 182 | Int_t phosmod2 = clu->GetPHOSMod() ; |
d15a28e7 | 183 | |
92862013 | 184 | TVector3 locpos1; |
7932f811 | 185 | GetLocalPosition(locpos1) ; |
92862013 | 186 | TVector3 locpos2; |
187 | clu->GetLocalPosition(locpos2) ; | |
d15a28e7 | 188 | |
92862013 | 189 | if(phosmod1 == phosmod2 ) { |
7932f811 | 190 | Int_t rowdif = (Int_t)TMath::Ceil(locpos1.X()/delta)-(Int_t)TMath::Ceil(locpos2.X()/delta) ; |
d15a28e7 | 191 | if (rowdif> 0) |
7932f811 | 192 | rv = 1 ; |
d15a28e7 | 193 | else if(rowdif < 0) |
7932f811 | 194 | rv = -1 ; |
92862013 | 195 | else if(locpos1.Z()>locpos2.Z()) |
d15a28e7 | 196 | rv = -1 ; |
197 | else | |
198 | rv = 1 ; | |
199 | } | |
200 | ||
201 | else { | |
92862013 | 202 | if(phosmod1 < phosmod2 ) |
d15a28e7 | 203 | rv = -1 ; |
204 | else | |
205 | rv = 1 ; | |
206 | } | |
207 | ||
208 | return rv ; | |
209 | } | |
9f616d61 | 210 | //______________________________________________________________________________ |
8f2a3661 | 211 | void AliPHOSEmcRecPoint::ExecuteEvent(Int_t event, Int_t, Int_t) const |
9f616d61 | 212 | { |
9f616d61 | 213 | |
9688c1dd | 214 | // Execute action corresponding to one event |
215 | // This member function is called when a AliPHOSRecPoint is clicked with the locator | |
216 | // | |
217 | // If Left button is clicked on AliPHOSRecPoint, the digits are switched on | |
218 | // and switched off when the mouse button is released. | |
219 | ||
88cb7938 | 220 | |
221 | AliPHOSGeometry * phosgeom = AliPHOSLoader::GetPHOSGeometry(); | |
83974468 | 222 | |
9688c1dd | 223 | static TGraph * digitgraph = 0 ; |
83974468 | 224 | |
9688c1dd | 225 | if (!gPad->IsEditable()) return; |
83974468 | 226 | |
9688c1dd | 227 | TH2F * histo = 0 ; |
228 | TCanvas * histocanvas ; | |
229 | ||
88cb7938 | 230 | |
231 | //try to get run loader from default event folder | |
232 | AliRunLoader* rn = AliRunLoader::GetRunLoader(AliConfig::fgkDefaultEventFolderName); | |
233 | if (rn == 0x0) | |
234 | { | |
235 | Error("ExecuteEvent","Can not find Run Loader in Default Event Folder"); | |
236 | return; | |
237 | } | |
238 | AliPHOSLoader* gime = dynamic_cast<AliPHOSLoader*>(rn->GetLoader("PHOSLoader")); | |
239 | if (gime == 0x0) | |
240 | { | |
241 | Error("ExecuteEvent","Can not find PHOS Loader from Run Loader"); | |
242 | return; | |
243 | } | |
244 | ||
245 | ||
afa51c4e | 246 | const TClonesArray * digits = gime->Digits() ; |
9688c1dd | 247 | |
248 | switch (event) { | |
83974468 | 249 | |
9688c1dd | 250 | case kButton1Down: { |
251 | AliPHOSDigit * digit ; | |
252 | Int_t iDigit; | |
253 | Int_t relid[4] ; | |
83974468 | 254 | |
9688c1dd | 255 | const Int_t kMulDigit = AliPHOSEmcRecPoint::GetDigitsMultiplicity() ; |
256 | Float_t * xi = new Float_t[kMulDigit] ; | |
257 | Float_t * zi = new Float_t[kMulDigit] ; | |
83974468 | 258 | |
9688c1dd | 259 | // create the histogram for the single cluster |
260 | // 1. gets histogram boundaries | |
261 | Float_t ximax = -999. ; | |
262 | Float_t zimax = -999. ; | |
263 | Float_t ximin = 999. ; | |
264 | Float_t zimin = 999. ; | |
83974468 | 265 | |
9688c1dd | 266 | for(iDigit=0; iDigit<kMulDigit; iDigit++) { |
267 | digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ; | |
268 | phosgeom->AbsToRelNumbering(digit->GetId(), relid) ; | |
269 | phosgeom->RelPosInModule(relid, xi[iDigit], zi[iDigit]); | |
270 | if ( xi[iDigit] > ximax ) | |
271 | ximax = xi[iDigit] ; | |
272 | if ( xi[iDigit] < ximin ) | |
273 | ximin = xi[iDigit] ; | |
274 | if ( zi[iDigit] > zimax ) | |
275 | zimax = zi[iDigit] ; | |
276 | if ( zi[iDigit] < zimin ) | |
277 | zimin = zi[iDigit] ; | |
278 | } | |
279 | ximax += phosgeom->GetCrystalSize(0) / 2. ; | |
280 | zimax += phosgeom->GetCrystalSize(2) / 2. ; | |
281 | ximin -= phosgeom->GetCrystalSize(0) / 2. ; | |
282 | zimin -= phosgeom->GetCrystalSize(2) / 2. ; | |
283 | Int_t xdim = (int)( (ximax - ximin ) / phosgeom->GetCrystalSize(0) + 0.5 ) ; | |
284 | Int_t zdim = (int)( (zimax - zimin ) / phosgeom->GetCrystalSize(2) + 0.5 ) ; | |
83974468 | 285 | |
9688c1dd | 286 | // 2. gets the histogram title |
83974468 | 287 | |
9688c1dd | 288 | Text_t title[100] ; |
289 | sprintf(title,"Energy=%1.2f GeV ; Digits ; %d ", GetEnergy(), GetDigitsMultiplicity()) ; | |
83974468 | 290 | |
9688c1dd | 291 | if (!histo) { |
292 | delete histo ; | |
293 | histo = 0 ; | |
294 | } | |
295 | histo = new TH2F("cluster3D", title, xdim, ximin, ximax, zdim, zimin, zimax) ; | |
83974468 | 296 | |
9688c1dd | 297 | Float_t x, z ; |
298 | for(iDigit=0; iDigit<kMulDigit; iDigit++) { | |
299 | digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ; | |
300 | phosgeom->AbsToRelNumbering(digit->GetId(), relid) ; | |
301 | phosgeom->RelPosInModule(relid, x, z); | |
302 | histo->Fill(x, z, fEnergyList[iDigit] ) ; | |
303 | } | |
83974468 | 304 | |
9688c1dd | 305 | if (!digitgraph) { |
306 | digitgraph = new TGraph(kMulDigit,xi,zi); | |
307 | digitgraph-> SetMarkerStyle(5) ; | |
308 | digitgraph-> SetMarkerSize(1.) ; | |
309 | digitgraph-> SetMarkerColor(1) ; | |
310 | digitgraph-> Paint("P") ; | |
311 | } | |
83974468 | 312 | |
9688c1dd | 313 | // Print() ; |
314 | histocanvas = new TCanvas("cluster", "a single cluster", 600, 500) ; | |
315 | histocanvas->Draw() ; | |
316 | histo->Draw("lego1") ; | |
83974468 | 317 | |
9688c1dd | 318 | delete[] xi ; |
319 | delete[] zi ; | |
83974468 | 320 | |
9688c1dd | 321 | break; |
322 | } | |
83974468 | 323 | |
9688c1dd | 324 | case kButton1Up: |
325 | if (digitgraph) { | |
326 | delete digitgraph ; | |
327 | digitgraph = 0 ; | |
328 | } | |
329 | break; | |
9f616d61 | 330 | |
9688c1dd | 331 | } |
9f616d61 | 332 | } |
333 | ||
d15a28e7 | 334 | //____________________________________________________________________________ |
7932f811 | 335 | void AliPHOSEmcRecPoint::EvalDispersion(Float_t logWeight,TClonesArray * digits) |
d15a28e7 | 336 | { |
b2a60966 | 337 | // Calculates the dispersion of the shower at the origine of the RecPoint |
338 | ||
e5b16749 | 339 | Float_t d = 0. ; |
340 | Float_t wtot = 0. ; | |
d15a28e7 | 341 | |
d084d50d | 342 | Float_t x = 0.; |
343 | Float_t z = 0.; | |
d15a28e7 | 344 | |
345 | AliPHOSDigit * digit ; | |
7b7c1533 | 346 | |
88cb7938 | 347 | AliPHOSGeometry * phosgeom = AliPHOSLoader::GetPHOSGeometry(); |
e5b16749 | 348 | |
349 | // Calculates the center of gravity in the local PHOS-module coordinates | |
350 | ||
d15a28e7 | 351 | Int_t iDigit; |
e5b16749 | 352 | |
353 | for(iDigit=0; iDigit<fMulDigit; iDigit++) { | |
354 | digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ; | |
355 | Int_t relid[4] ; | |
356 | Float_t xi ; | |
357 | Float_t zi ; | |
358 | phosgeom->AbsToRelNumbering(digit->GetId(), relid) ; | |
359 | phosgeom->RelPosInModule(relid, xi, zi); | |
360 | Float_t w = TMath::Max( 0., logWeight + TMath::Log( fEnergyList[iDigit] / fAmp ) ) ; | |
361 | x += xi * w ; | |
362 | z += zi * w ; | |
363 | wtot += w ; | |
364 | } | |
365 | x /= wtot ; | |
366 | z /= wtot ; | |
367 | ||
368 | ||
369 | // Calculates the dispersion in coordinates | |
370 | wtot = 0.; | |
88714635 | 371 | for(iDigit=0; iDigit < fMulDigit; iDigit++) { |
7932f811 | 372 | digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ; |
d15a28e7 | 373 | Int_t relid[4] ; |
374 | Float_t xi ; | |
375 | Float_t zi ; | |
92862013 | 376 | phosgeom->AbsToRelNumbering(digit->GetId(), relid) ; |
377 | phosgeom->RelPosInModule(relid, xi, zi); | |
7932f811 | 378 | Float_t w = TMath::Max(0.,logWeight+TMath::Log(fEnergyList[iDigit]/fAmp ) ) ; |
92862013 | 379 | d += w*((xi-x)*(xi-x) + (zi-z)*(zi-z) ) ; |
d15a28e7 | 380 | wtot+=w ; |
d084d50d | 381 | |
382 | ||
d15a28e7 | 383 | } |
e5b16749 | 384 | |
7932f811 | 385 | |
92862013 | 386 | d /= wtot ; |
d15a28e7 | 387 | |
7932f811 | 388 | fDispersion = TMath::Sqrt(d) ; |
c63c49e9 | 389 | |
d15a28e7 | 390 | } |
fad3e5b9 | 391 | //______________________________________________________________________________ |
e5b16749 | 392 | void AliPHOSEmcRecPoint::EvalCoreEnergy(Float_t logWeight, TClonesArray * digits) |
fad3e5b9 | 393 | { |
a4e98857 | 394 | // This function calculates energy in the core, |
395 | // i.e. within a radius rad = 3cm around the center. Beyond this radius | |
396 | // in accordance with shower profile the energy deposition | |
fad3e5b9 | 397 | // should be less than 2% |
398 | ||
fad3e5b9 | 399 | Float_t coreRadius = 3 ; |
400 | ||
e5b16749 | 401 | Float_t x = 0 ; |
402 | Float_t z = 0 ; | |
fad3e5b9 | 403 | |
404 | AliPHOSDigit * digit ; | |
7b7c1533 | 405 | |
88cb7938 | 406 | AliPHOSGeometry * phosgeom = AliPHOSLoader::GetPHOSGeometry(); |
407 | ||
fad3e5b9 | 408 | Int_t iDigit; |
e5b16749 | 409 | |
410 | // Calculates the center of gravity in the local PHOS-module coordinates | |
411 | Float_t wtot = 0; | |
412 | for(iDigit=0; iDigit<fMulDigit; iDigit++) { | |
413 | digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ; | |
414 | Int_t relid[4] ; | |
415 | Float_t xi ; | |
416 | Float_t zi ; | |
417 | phosgeom->AbsToRelNumbering(digit->GetId(), relid) ; | |
418 | phosgeom->RelPosInModule(relid, xi, zi); | |
419 | Float_t w = TMath::Max( 0., logWeight + TMath::Log( fEnergyList[iDigit] / fAmp ) ) ; | |
420 | x += xi * w ; | |
421 | z += zi * w ; | |
422 | wtot += w ; | |
423 | } | |
424 | x /= wtot ; | |
425 | z /= wtot ; | |
426 | ||
427 | ||
fad3e5b9 | 428 | for(iDigit=0; iDigit < fMulDigit; iDigit++) { |
7932f811 | 429 | digit = (AliPHOSDigit *) ( digits->At(fDigitsList[iDigit]) ) ; |
fad3e5b9 | 430 | Int_t relid[4] ; |
431 | Float_t xi ; | |
432 | Float_t zi ; | |
433 | phosgeom->AbsToRelNumbering(digit->GetId(), relid) ; | |
434 | phosgeom->RelPosInModule(relid, xi, zi); | |
435 | Float_t distance = TMath::Sqrt((xi-x)*(xi-x)+(zi-z)*(zi-z)) ; | |
436 | if(distance < coreRadius) | |
7932f811 | 437 | fCoreEnergy += fEnergyList[iDigit] ; |
fad3e5b9 | 438 | } |
439 | ||
fad3e5b9 | 440 | } |
d15a28e7 | 441 | |
442 | //____________________________________________________________________________ | |
7932f811 | 443 | void AliPHOSEmcRecPoint::EvalElipsAxis(Float_t logWeight,TClonesArray * digits) |
d15a28e7 | 444 | { |
b2a60966 | 445 | // Calculates the axis of the shower ellipsoid |
83974468 | 446 | |
e8dbb96e | 447 | Double_t wtot = 0. ; |
448 | Double_t x = 0.; | |
449 | Double_t z = 0.; | |
450 | Double_t dxx = 0.; | |
451 | Double_t dzz = 0.; | |
452 | Double_t dxz = 0.; | |
d15a28e7 | 453 | |
454 | AliPHOSDigit * digit ; | |
7b7c1533 | 455 | |
88cb7938 | 456 | AliPHOSGeometry * phosgeom = AliPHOSLoader::GetPHOSGeometry(); |
7b7c1533 | 457 | |
d15a28e7 | 458 | Int_t iDigit; |
459 | ||
e5b16749 | 460 | |
d15a28e7 | 461 | for(iDigit=0; iDigit<fMulDigit; iDigit++) { |
7932f811 | 462 | digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ; |
d15a28e7 | 463 | Int_t relid[4] ; |
464 | Float_t xi ; | |
465 | Float_t zi ; | |
92862013 | 466 | phosgeom->AbsToRelNumbering(digit->GetId(), relid) ; |
467 | phosgeom->RelPosInModule(relid, xi, zi); | |
7932f811 | 468 | Double_t w = TMath::Max(0.,logWeight+TMath::Log(fEnergyList[iDigit]/fAmp ) ) ; |
92862013 | 469 | dxx += w * xi * xi ; |
d15a28e7 | 470 | x += w * xi ; |
92862013 | 471 | dzz += w * zi * zi ; |
d15a28e7 | 472 | z += w * zi ; |
92862013 | 473 | dxz += w * xi * zi ; |
d15a28e7 | 474 | wtot += w ; |
475 | } | |
92862013 | 476 | dxx /= wtot ; |
d15a28e7 | 477 | x /= wtot ; |
92862013 | 478 | dxx -= x * x ; |
479 | dzz /= wtot ; | |
d15a28e7 | 480 | z /= wtot ; |
92862013 | 481 | dzz -= z * z ; |
482 | dxz /= wtot ; | |
483 | dxz -= x * z ; | |
d15a28e7 | 484 | |
69183710 | 485 | // //Apply correction due to non-perpendicular incidence |
486 | // Double_t CosX ; | |
487 | // Double_t CosZ ; | |
88cb7938 | 488 | // AliPHOSGetter * gime = AliPHOSGetter::Instance() ; |
7b7c1533 | 489 | // AliPHOSGeometry * phosgeom = (AliPHOSGeometry*)gime->PHOSGeometry(); |
490 | // Double_t DistanceToIP= (Double_t ) phosgeom->GetIPtoCrystalSurface() ; | |
69183710 | 491 | |
492 | // CosX = DistanceToIP/TMath::Sqrt(DistanceToIP*DistanceToIP+x*x) ; | |
493 | // CosZ = DistanceToIP/TMath::Sqrt(DistanceToIP*DistanceToIP+z*z) ; | |
494 | ||
495 | // dxx = dxx/(CosX*CosX) ; | |
496 | // dzz = dzz/(CosZ*CosZ) ; | |
497 | // dxz = dxz/(CosX*CosZ) ; | |
498 | ||
499 | ||
7932f811 | 500 | fLambda[0] = 0.5 * (dxx + dzz) + TMath::Sqrt( 0.25 * (dxx - dzz) * (dxx - dzz) + dxz * dxz ) ; |
501 | if(fLambda[0] > 0) | |
502 | fLambda[0] = TMath::Sqrt(fLambda[0]) ; | |
e8dbb96e | 503 | |
7932f811 | 504 | fLambda[1] = 0.5 * (dxx + dzz) - TMath::Sqrt( 0.25 * (dxx - dzz) * (dxx - dzz) + dxz * dxz ) ; |
505 | if(fLambda[1] > 0) //To avoid exception if numerical errors lead to negative lambda. | |
506 | fLambda[1] = TMath::Sqrt(fLambda[1]) ; | |
e8dbb96e | 507 | else |
7932f811 | 508 | fLambda[1]= 0. ; |
d15a28e7 | 509 | } |
510 | ||
ce2a9a95 | 511 | //____________________________________________________________________________ |
512 | void AliPHOSEmcRecPoint::EvalMoments(Float_t logWeight,TClonesArray * digits) | |
513 | { | |
514 | // Calculate the shower moments in the eigen reference system | |
515 | // M2x, M2z, M3x, M4z | |
516 | // Calculate the angle between the shower position vector and the eigen vector | |
517 | ||
518 | Double_t wtot = 0. ; | |
519 | Double_t x = 0.; | |
520 | Double_t z = 0.; | |
521 | Double_t dxx = 0.; | |
522 | Double_t dzz = 0.; | |
523 | Double_t dxz = 0.; | |
524 | Double_t lambda0=0, lambda1=0; | |
525 | ||
526 | AliPHOSDigit * digit ; | |
527 | ||
88cb7938 | 528 | AliPHOSGeometry * phosgeom = AliPHOSLoader::GetPHOSGeometry(); |
ce2a9a95 | 529 | |
530 | Int_t iDigit; | |
531 | ||
532 | // 1) Find covariance matrix elements: | |
533 | // || dxx dxz || | |
534 | // || dxz dzz || | |
535 | ||
536 | Float_t xi ; | |
537 | Float_t zi ; | |
538 | Int_t relid[4] ; | |
539 | Double_t w; | |
540 | for(iDigit=0; iDigit<fMulDigit; iDigit++) { | |
541 | digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ; | |
542 | phosgeom->AbsToRelNumbering(digit->GetId(), relid) ; | |
543 | phosgeom->RelPosInModule(relid, xi, zi); | |
544 | w = TMath::Max(0.,logWeight+TMath::Log(fEnergyList[iDigit]/fAmp ) ) ; | |
545 | x += w * xi ; | |
546 | z += w * zi ; | |
547 | dxx += w * xi * xi ; | |
548 | dzz += w * zi * zi ; | |
549 | dxz += w * xi * zi ; | |
550 | wtot += w ; | |
551 | } | |
552 | x /= wtot ; | |
553 | z /= wtot ; | |
554 | dxx /= wtot ; | |
555 | dzz /= wtot ; | |
556 | dxz /= wtot ; | |
557 | dxx -= x * x ; | |
558 | dzz -= z * z ; | |
559 | dxz -= x * z ; | |
560 | ||
561 | // 2) Find covariance matrix eigen values lambda0 and lambda1 | |
562 | ||
563 | lambda0 = 0.5 * (dxx + dzz) + TMath::Sqrt( 0.25 * (dxx - dzz) * (dxx - dzz) + dxz * dxz ) ; | |
564 | lambda1 = 0.5 * (dxx + dzz) - TMath::Sqrt( 0.25 * (dxx - dzz) * (dxx - dzz) + dxz * dxz ) ; | |
565 | ||
566 | // 3) Find covariance matrix eigen vectors e0 and e1 | |
567 | ||
568 | TVector2 e0,e1; | |
569 | if (dxz != 0) | |
570 | e0.Set(1.,(lambda0-dxx)/dxz); | |
571 | else | |
572 | e0.Set(0.,1.); | |
573 | ||
574 | e0 = e0.Unit(); | |
575 | e1.Set(-e0.Y(),e0.X()); | |
576 | ||
577 | // 4) Rotate cluster tensor from (x,z) to (e0,e1) system | |
578 | // and calculate moments M3x and M4z | |
579 | ||
580 | Float_t cosPhi = e0.X(); | |
581 | Float_t sinPhi = e0.Y(); | |
582 | ||
583 | Float_t xiPHOS ; | |
584 | Float_t ziPHOS ; | |
585 | Double_t dx3, dz3, dz4; | |
586 | wtot = 0.; | |
587 | x = 0.; | |
588 | z = 0.; | |
589 | dxx = 0.; | |
590 | dzz = 0.; | |
591 | dxz = 0.; | |
592 | dx3 = 0.; | |
593 | dz3 = 0.; | |
594 | dz4 = 0.; | |
595 | for(iDigit=0; iDigit<fMulDigit; iDigit++) { | |
596 | digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ; | |
597 | phosgeom->AbsToRelNumbering(digit->GetId(), relid) ; | |
598 | phosgeom->RelPosInModule(relid, xiPHOS, ziPHOS); | |
599 | xi = xiPHOS*cosPhi + ziPHOS*sinPhi; | |
600 | zi = ziPHOS*cosPhi - xiPHOS*sinPhi; | |
601 | w = TMath::Max(0.,logWeight+TMath::Log(fEnergyList[iDigit]/fAmp ) ) ; | |
602 | x += w * xi ; | |
603 | z += w * zi ; | |
604 | dxx += w * xi * xi ; | |
605 | dzz += w * zi * zi ; | |
606 | dxz += w * xi * zi ; | |
607 | dx3 += w * xi * xi * xi; | |
608 | dz3 += w * zi * zi * zi ; | |
609 | dz4 += w * zi * zi * zi * zi ; | |
610 | wtot += w ; | |
611 | } | |
612 | x /= wtot ; | |
613 | z /= wtot ; | |
614 | dxx /= wtot ; | |
615 | dzz /= wtot ; | |
616 | dxz /= wtot ; | |
617 | dx3 /= wtot ; | |
618 | dz3 /= wtot ; | |
619 | dz4 /= wtot ; | |
620 | dx3 += -3*dxx*x + 2*x*x*x; | |
621 | dz4 += -4*dz3*z + 6*dzz*z*z -3*z*z*z*z; | |
622 | dxx -= x * x ; | |
623 | dzz -= z * z ; | |
624 | dxz -= x * z ; | |
625 | ||
626 | // 5) Find an angle between cluster center vector and eigen vector e0 | |
627 | ||
628 | Float_t phi = TMath::ACos ((x*e0.X() + z*e0.Y()) / sqrt(x*x + z*z)); | |
629 | ||
630 | fM2x = lambda0; | |
631 | fM2z = lambda1; | |
632 | fM3x = dx3; | |
633 | fM4z = dz4; | |
634 | fPhixe = phi; | |
635 | ||
636 | } | |
b2a60966 | 637 | //____________________________________________________________________________ |
7932f811 | 638 | void AliPHOSEmcRecPoint::EvalAll(Float_t logWeight, TClonesArray * digits ) |
ad8cfaf4 | 639 | { |
baef0810 | 640 | // Evaluates all shower parameters |
641 | ||
7932f811 | 642 | EvalLocalPosition(logWeight, digits) ; |
643 | EvalElipsAxis(logWeight, digits) ; | |
ce2a9a95 | 644 | EvalMoments(logWeight, digits) ; |
7932f811 | 645 | EvalDispersion(logWeight, digits) ; |
e5b16749 | 646 | EvalCoreEnergy(logWeight, digits); |
a6eedfad | 647 | EvalTime(digits) ; |
bb53c80c | 648 | AliPHOSRecPoint::EvalAll(logWeight,digits) ; |
ad8cfaf4 | 649 | } |
650 | //____________________________________________________________________________ | |
7932f811 | 651 | void AliPHOSEmcRecPoint::EvalLocalPosition(Float_t logWeight, TClonesArray * digits) |
b2a60966 | 652 | { |
653 | // Calculates the center of gravity in the local PHOS-module coordinates | |
b2a60966 | 654 | Float_t wtot = 0. ; |
655 | ||
656 | Int_t relid[4] ; | |
657 | ||
658 | Float_t x = 0. ; | |
659 | Float_t z = 0. ; | |
660 | ||
661 | AliPHOSDigit * digit ; | |
662 | ||
88cb7938 | 663 | AliPHOSGeometry * phosgeom = AliPHOSLoader::GetPHOSGeometry(); |
b2a60966 | 664 | |
665 | Int_t iDigit; | |
666 | ||
b2a60966 | 667 | for(iDigit=0; iDigit<fMulDigit; iDigit++) { |
7932f811 | 668 | digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ; |
b2a60966 | 669 | |
670 | Float_t xi ; | |
671 | Float_t zi ; | |
672 | phosgeom->AbsToRelNumbering(digit->GetId(), relid) ; | |
673 | phosgeom->RelPosInModule(relid, xi, zi); | |
7932f811 | 674 | Float_t w = TMath::Max( 0., logWeight + TMath::Log( fEnergyList[iDigit] / fAmp ) ) ; |
b2a60966 | 675 | x += xi * w ; |
676 | z += zi * w ; | |
677 | wtot += w ; | |
b2a60966 | 678 | |
9ce1a8d9 | 679 | } |
69183710 | 680 | |
681 | x /= wtot ; | |
682 | z /= wtot ; | |
ad8cfaf4 | 683 | |
684 | // Correction for the depth of the shower starting point (TDR p 127) | |
685 | Float_t para = 0.925 ; | |
686 | Float_t parb = 6.52 ; | |
687 | ||
1b799736 | 688 | Float_t xo,yo,zo ; //Coordinates of the origin |
689 | gAlice->Generator()->GetOrigin(xo,yo,zo) ; | |
690 | ||
5830e1d9 | 691 | Float_t phi = phosgeom->GetPHOSAngle(relid[0]) ; |
1b799736 | 692 | |
693 | //Transform to the local ref.frame | |
694 | Float_t xoL,yoL ; | |
695 | xoL = xo*TMath::Cos(phi)-yo*TMath::Sin(phi) ; | |
696 | yoL = xo*TMath::Sin(phi)+yo*TMath::Cos(phi) ; | |
697 | ||
fd84cb73 | 698 | Float_t radius = phosgeom->GetIPtoCrystalSurface()-yoL; |
1b799736 | 699 | |
700 | Float_t incidencephi = TMath::ATan((x-xoL ) / radius) ; | |
701 | Float_t incidencetheta = TMath::ATan((z-zo) / radius) ; | |
ad8cfaf4 | 702 | |
703 | Float_t depthx = ( para * TMath::Log(fAmp) + parb ) * TMath::Sin(incidencephi) ; | |
704 | Float_t depthz = ( para * TMath::Log(fAmp) + parb ) * TMath::Sin(incidencetheta) ; | |
ad8cfaf4 | 705 | |
706 | fLocPos.SetX(x - depthx) ; | |
b2a60966 | 707 | fLocPos.SetY(0.) ; |
ad8cfaf4 | 708 | fLocPos.SetZ(z - depthz) ; |
b2a60966 | 709 | |
a6eedfad | 710 | fLocPosM = 0 ; |
b2a60966 | 711 | } |
712 | ||
d15a28e7 | 713 | //____________________________________________________________________________ |
ad8cfaf4 | 714 | Float_t AliPHOSEmcRecPoint::GetMaximalEnergy(void) const |
d15a28e7 | 715 | { |
b2a60966 | 716 | // Finds the maximum energy in the cluster |
717 | ||
d15a28e7 | 718 | Float_t menergy = 0. ; |
719 | ||
720 | Int_t iDigit; | |
721 | ||
722 | for(iDigit=0; iDigit<fMulDigit; iDigit++) { | |
723 | ||
724 | if(fEnergyList[iDigit] > menergy) | |
725 | menergy = fEnergyList[iDigit] ; | |
726 | } | |
727 | return menergy ; | |
728 | } | |
729 | ||
730 | //____________________________________________________________________________ | |
ad8cfaf4 | 731 | Int_t AliPHOSEmcRecPoint::GetMultiplicityAtLevel(const Float_t H) const |
d15a28e7 | 732 | { |
b2a60966 | 733 | // Calculates the multiplicity of digits with energy larger than H*energy |
734 | ||
d15a28e7 | 735 | Int_t multipl = 0 ; |
736 | Int_t iDigit ; | |
737 | for(iDigit=0; iDigit<fMulDigit; iDigit++) { | |
738 | ||
739 | if(fEnergyList[iDigit] > H * fAmp) | |
740 | multipl++ ; | |
741 | } | |
742 | return multipl ; | |
743 | } | |
744 | ||
745 | //____________________________________________________________________________ | |
a0636361 | 746 | Int_t AliPHOSEmcRecPoint::GetNumberOfLocalMax( AliPHOSDigit ** maxAt, Float_t * maxAtEnergy, |
7932f811 | 747 | Float_t locMaxCut,TClonesArray * digits) const |
d15a28e7 | 748 | { |
b2a60966 | 749 | // Calculates the number of local maxima in the cluster using fLocalMaxCut as the minimum |
a4e98857 | 750 | // energy difference between two local maxima |
b2a60966 | 751 | |
d15a28e7 | 752 | AliPHOSDigit * digit ; |
753 | AliPHOSDigit * digitN ; | |
754 | ||
755 | ||
756 | Int_t iDigitN ; | |
757 | Int_t iDigit ; | |
758 | ||
7932f811 | 759 | for(iDigit = 0; iDigit < fMulDigit; iDigit++) |
a0636361 | 760 | maxAt[iDigit] = (AliPHOSDigit*) digits->At(fDigitsList[iDigit]) ; |
7932f811 | 761 | |
d15a28e7 | 762 | |
6ad0bfa0 | 763 | for(iDigit = 0 ; iDigit < fMulDigit; iDigit++) { |
a0636361 | 764 | if(maxAt[iDigit]) { |
765 | digit = maxAt[iDigit] ; | |
83974468 | 766 | |
6ad0bfa0 | 767 | for(iDigitN = 0; iDigitN < fMulDigit; iDigitN++) { |
7932f811 | 768 | digitN = (AliPHOSDigit *) digits->At(fDigitsList[iDigitN]) ; |
d15a28e7 | 769 | |
9f616d61 | 770 | if ( AreNeighbours(digit, digitN) ) { |
d15a28e7 | 771 | if (fEnergyList[iDigit] > fEnergyList[iDigitN] ) { |
a0636361 | 772 | maxAt[iDigitN] = 0 ; |
6ad0bfa0 | 773 | // but may be digit too is not local max ? |
7932f811 | 774 | if(fEnergyList[iDigit] < fEnergyList[iDigitN] + locMaxCut) |
a0636361 | 775 | maxAt[iDigit] = 0 ; |
d15a28e7 | 776 | } |
777 | else { | |
a0636361 | 778 | maxAt[iDigit] = 0 ; |
6ad0bfa0 | 779 | // but may be digitN too is not local max ? |
7932f811 | 780 | if(fEnergyList[iDigit] > fEnergyList[iDigitN] - locMaxCut) |
a0636361 | 781 | maxAt[iDigitN] = 0 ; |
d15a28e7 | 782 | } |
783 | } // if Areneighbours | |
784 | } // while digitN | |
785 | } // slot not empty | |
786 | } // while digit | |
787 | ||
788 | iDigitN = 0 ; | |
6ad0bfa0 | 789 | for(iDigit = 0; iDigit < fMulDigit; iDigit++) { |
a0636361 | 790 | if(maxAt[iDigit]){ |
d15a28e7 | 791 | maxAt[iDigitN] = maxAt[iDigit] ; |
9f616d61 | 792 | maxAtEnergy[iDigitN] = fEnergyList[iDigit] ; |
793 | iDigitN++ ; | |
d15a28e7 | 794 | } |
795 | } | |
796 | return iDigitN ; | |
797 | } | |
9688c1dd | 798 | //____________________________________________________________________________ |
0bc3b8ed | 799 | void AliPHOSEmcRecPoint::EvalTime(TClonesArray * digits) |
800 | { | |
801 | // Define a rec.point time as a time in the cell with the maximum energy | |
802 | ||
9688c1dd | 803 | Float_t maxE = 0; |
804 | Int_t maxAt = 0; | |
805 | for(Int_t idig=0; idig < fMulDigit; idig++){ | |
806 | if(fEnergyList[idig] > maxE){ | |
807 | maxE = fEnergyList[idig] ; | |
808 | maxAt = idig; | |
809 | } | |
810 | } | |
811 | fTime = ((AliPHOSDigit*) digits->At(fDigitsList[maxAt]))->GetTime() ; | |
812 | ||
813 | } | |
d15a28e7 | 814 | //____________________________________________________________________________ |
092b50ba | 815 | void AliPHOSEmcRecPoint::Purify(Float_t threshold){ |
816 | //Removes digits below threshold | |
817 | ||
818 | Int_t * tempo = new ( Int_t[fMaxDigit] ) ; | |
819 | Float_t * tempoE = new ( Float_t[fMaxDigit] ) ; | |
820 | ||
821 | Int_t mult = 0 ; | |
822 | for(Int_t iDigit=0;iDigit< fMulDigit ;iDigit++){ | |
823 | if(fEnergyList[iDigit] > threshold){ | |
824 | tempo[mult] = fDigitsList[iDigit] ; | |
825 | tempoE[mult] = fEnergyList[iDigit] ; | |
826 | mult++ ; | |
827 | } | |
828 | } | |
829 | ||
830 | fMulDigit = mult ; | |
831 | delete [] fDigitsList ; | |
832 | delete [] fEnergyList ; | |
833 | fDigitsList = new (Int_t[fMulDigit]) ; | |
834 | fEnergyList = new ( Float_t[fMulDigit]) ; | |
835 | ||
0458aa58 | 836 | fAmp = 0.; //Recalculate total energy |
092b50ba | 837 | for(Int_t iDigit=0;iDigit< fMulDigit ;iDigit++){ |
0458aa58 | 838 | fDigitsList[iDigit] = tempo[iDigit]; |
839 | fEnergyList[iDigit] = tempoE[iDigit] ; | |
840 | fAmp+=tempoE[iDigit]; | |
092b50ba | 841 | } |
842 | ||
843 | delete [] tempo ; | |
844 | delete [] tempoE ; | |
845 | ||
846 | } | |
847 | //____________________________________________________________________________ | |
a8c47ab6 | 848 | void AliPHOSEmcRecPoint::Print(Option_t *) const |
d15a28e7 | 849 | { |
b2a60966 | 850 | // Print the list of digits belonging to the cluster |
851 | ||
21cd0c07 | 852 | TString message ; |
853 | message = "AliPHOSEmcRecPoint:\n" ; | |
854 | message += " digits # = " ; | |
855 | Info("Print", message.Data()) ; | |
d15a28e7 | 856 | |
d15a28e7 | 857 | Int_t iDigit; |
7932f811 | 858 | for(iDigit=0; iDigit<fMulDigit; iDigit++) |
53ad38d8 | 859 | printf(" %d ", fDigitsList[iDigit] ) ; |
7932f811 | 860 | |
21cd0c07 | 861 | Info("Print", " Energies = ") ; |
7932f811 | 862 | for(iDigit=0; iDigit<fMulDigit; iDigit++) |
53ad38d8 | 863 | printf(" %f ", fEnergyList[iDigit] ) ; |
864 | printf("\n") ; | |
21cd0c07 | 865 | Info("Print", " Primaries ") ; |
bc68d12c | 866 | for(iDigit = 0;iDigit < fMulTrack; iDigit++) |
53ad38d8 | 867 | printf(" %d ", fTracksList[iDigit]) ; |
868 | printf("\n") ; | |
21cd0c07 | 869 | message = " Multiplicity = %d" ; |
870 | message += " Cluster Energy = %f" ; | |
871 | message += " Number of primaries %d" ; | |
872 | message += " Stored at position %d" ; | |
83974468 | 873 | |
21cd0c07 | 874 | Info("Print", message.Data(), fMulDigit, fAmp, fMulTrack,GetIndexInList() ) ; |
d15a28e7 | 875 | } |
88714635 | 876 | |
7932f811 | 877 |