d15a28e7 |
1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * |
3 | * * |
4 | * Author: The ALICE Off-line Project. * |
5 | * Contributors are mentioned in the code where appropriate. * |
6 | * * |
7 | * Permission to use, copy, modify and distribute this software and its * |
8 | * documentation strictly for non-commercial purposes is hereby granted * |
9 | * without fee, provided that the above copyright notice appears in all * |
10 | * copies and that both the copyright notice and this permission notice * |
11 | * appear in the supporting documentation. The authors make no claims * |
12 | * about the suitability of this software for any purpose. It is * |
13 | * provided "as is" without express or implied warranty. * |
14 | **************************************************************************/ |
15 | |
b2a60966 |
16 | /* $Id$ */ |
17 | |
d15a28e7 |
18 | //_________________________________________________________________________ |
b2a60966 |
19 | // RecPoint implementation for PHOS-EMC |
20 | // An EmcRecPoint is a cluster of digits |
baef0810 |
21 | //*-- |
b2a60966 |
22 | //*-- Author: Dmitri Peressounko (RRC KI & SUBATECH) |
23 | |
d15a28e7 |
24 | |
25 | // --- ROOT system --- |
9f616d61 |
26 | #include "TPad.h" |
27 | #include "TH2.h" |
d15a28e7 |
28 | #include "TMath.h" |
9f616d61 |
29 | #include "TCanvas.h" |
d15a28e7 |
30 | |
31 | // --- Standard library --- |
32 | |
de9ec31b |
33 | #include <iostream.h> |
d15a28e7 |
34 | |
35 | // --- AliRoot header files --- |
36 | |
7932f811 |
37 | #include "AliGenerator.h" |
d15a28e7 |
38 | #include "AliPHOSGeometry.h" |
39 | #include "AliPHOSEmcRecPoint.h" |
40 | #include "AliRun.h" |
7b7c1533 |
41 | #include "AliPHOSGetter.h" |
d15a28e7 |
42 | |
43 | ClassImp(AliPHOSEmcRecPoint) |
44 | |
45 | //____________________________________________________________________________ |
7932f811 |
46 | AliPHOSEmcRecPoint::AliPHOSEmcRecPoint() : AliPHOSRecPoint() |
d15a28e7 |
47 | { |
48 | // ctor |
49 | |
50 | fMulDigit = 0 ; |
51 | fAmp = 0. ; |
7932f811 |
52 | fCoreEnergy = 0 ; |
53 | fEnergyList = 0 ; |
d15a28e7 |
54 | fLocPos.SetX(1000000.) ; //Local position should be evaluated |
7b7c1533 |
55 | |
83974468 |
56 | } |
57 | |
58 | //____________________________________________________________________________ |
59 | AliPHOSEmcRecPoint::~AliPHOSEmcRecPoint() |
60 | { |
88714635 |
61 | // dtor |
a4e98857 |
62 | |
83974468 |
63 | if ( fEnergyList ) |
64 | delete[] fEnergyList ; |
d15a28e7 |
65 | } |
66 | |
d15a28e7 |
67 | //____________________________________________________________________________ |
83974468 |
68 | void AliPHOSEmcRecPoint::AddDigit(AliPHOSDigit & digit, Float_t Energy) |
d15a28e7 |
69 | { |
b2a60966 |
70 | // Adds a digit to the RecPoint |
a4e98857 |
71 | // and accumulates the total amplitude and the multiplicity |
d15a28e7 |
72 | |
7932f811 |
73 | if(fEnergyList == 0) |
74 | fEnergyList = new Float_t[fMaxDigit]; |
75 | |
d15a28e7 |
76 | if ( fMulDigit >= fMaxDigit ) { // increase the size of the lists |
9f616d61 |
77 | fMaxDigit*=2 ; |
83974468 |
78 | Int_t * tempo = new ( Int_t[fMaxDigit] ) ; |
9f616d61 |
79 | Float_t * tempoE = new ( Float_t[fMaxDigit] ) ; |
80 | |
81 | Int_t index ; |
d15a28e7 |
82 | for ( index = 0 ; index < fMulDigit ; index++ ){ |
83974468 |
83 | tempo[index] = fDigitsList[index] ; |
d15a28e7 |
84 | tempoE[index] = fEnergyList[index] ; |
85 | } |
86 | |
9f616d61 |
87 | delete [] fDigitsList ; |
83974468 |
88 | fDigitsList = new ( Int_t[fMaxDigit] ) ; |
9f616d61 |
89 | |
90 | delete [] fEnergyList ; |
91 | fEnergyList = new ( Float_t[fMaxDigit] ) ; |
92 | |
93 | for ( index = 0 ; index < fMulDigit ; index++ ){ |
94 | fDigitsList[index] = tempo[index] ; |
95 | fEnergyList[index] = tempoE[index] ; |
96 | } |
97 | |
98 | delete [] tempo ; |
99 | delete [] tempoE ; |
100 | } // if |
d15a28e7 |
101 | |
83974468 |
102 | fDigitsList[fMulDigit] = digit.GetIndexInList() ; |
103 | fEnergyList[fMulDigit] = Energy ; |
104 | fMulDigit++ ; |
d15a28e7 |
105 | fAmp += Energy ; |
7932f811 |
106 | |
107 | EvalPHOSMod(&digit) ; |
d15a28e7 |
108 | } |
109 | |
110 | //____________________________________________________________________________ |
ad8cfaf4 |
111 | Bool_t AliPHOSEmcRecPoint::AreNeighbours(AliPHOSDigit * digit1, AliPHOSDigit * digit2 ) const |
d15a28e7 |
112 | { |
a4e98857 |
113 | // Tells if (true) or not (false) two digits are neighbors |
d15a28e7 |
114 | |
115 | Bool_t aren = kFALSE ; |
116 | |
7b7c1533 |
117 | AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ; |
118 | AliPHOSGeometry * phosgeom = (AliPHOSGeometry*)gime->PHOSGeometry(); |
119 | |
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120 | Int_t relid1[4] ; |
92862013 |
121 | phosgeom->AbsToRelNumbering(digit1->GetId(), relid1) ; |
d15a28e7 |
122 | |
123 | Int_t relid2[4] ; |
92862013 |
124 | phosgeom->AbsToRelNumbering(digit2->GetId(), relid2) ; |
d15a28e7 |
125 | |
92862013 |
126 | Int_t rowdiff = TMath::Abs( relid1[2] - relid2[2] ) ; |
127 | Int_t coldiff = TMath::Abs( relid1[3] - relid2[3] ) ; |
d15a28e7 |
128 | |
92862013 |
129 | if (( coldiff <= 1 ) && ( rowdiff <= 1 ) && (coldiff + rowdiff > 0)) |
d15a28e7 |
130 | aren = kTRUE ; |
131 | |
132 | return aren ; |
133 | } |
134 | |
135 | //____________________________________________________________________________ |
2a941f4e |
136 | Int_t AliPHOSEmcRecPoint::Compare(const TObject * obj) const |
d15a28e7 |
137 | { |
b2a60966 |
138 | // Compares two RecPoints according to their position in the PHOS modules |
139 | |
7932f811 |
140 | Float_t delta = 1 ; //Width of "Sorting row". If you changibg this |
141 | //value (what is senseless) change as vell delta in |
142 | //AliPHOSTrackSegmentMakerv* and other RecPoints... |
d15a28e7 |
143 | Int_t rv ; |
144 | |
145 | AliPHOSEmcRecPoint * clu = (AliPHOSEmcRecPoint *)obj ; |
146 | |
147 | |
ad8cfaf4 |
148 | Int_t phosmod1 = GetPHOSMod() ; |
92862013 |
149 | Int_t phosmod2 = clu->GetPHOSMod() ; |
d15a28e7 |
150 | |
92862013 |
151 | TVector3 locpos1; |
7932f811 |
152 | GetLocalPosition(locpos1) ; |
92862013 |
153 | TVector3 locpos2; |
154 | clu->GetLocalPosition(locpos2) ; |
d15a28e7 |
155 | |
92862013 |
156 | if(phosmod1 == phosmod2 ) { |
7932f811 |
157 | Int_t rowdif = (Int_t)TMath::Ceil(locpos1.X()/delta)-(Int_t)TMath::Ceil(locpos2.X()/delta) ; |
d15a28e7 |
158 | if (rowdif> 0) |
7932f811 |
159 | rv = 1 ; |
d15a28e7 |
160 | else if(rowdif < 0) |
7932f811 |
161 | rv = -1 ; |
92862013 |
162 | else if(locpos1.Z()>locpos2.Z()) |
d15a28e7 |
163 | rv = -1 ; |
164 | else |
165 | rv = 1 ; |
166 | } |
167 | |
168 | else { |
92862013 |
169 | if(phosmod1 < phosmod2 ) |
d15a28e7 |
170 | rv = -1 ; |
171 | else |
172 | rv = 1 ; |
173 | } |
174 | |
175 | return rv ; |
176 | } |
177 | |
9f616d61 |
178 | //______________________________________________________________________________ |
baef0810 |
179 | void AliPHOSEmcRecPoint::ExecuteEvent(Int_t event, Int_t px, Int_t py) const |
9f616d61 |
180 | { |
7932f811 |
181 | // Commented by Dmitri Peressounko: there is no possibility to ensure, |
7b7c1533 |
182 | // that AliPHOSGetter keeps the correct information. |
7932f811 |
183 | |
184 | // // Execute action corresponding to one event |
185 | // // This member function is called when a AliPHOSRecPoint is clicked with the locator |
186 | // // |
187 | // // If Left button is clicked on AliPHOSRecPoint, the digits are switched on |
188 | // // and switched off when the mouse button is released. |
189 | // // |
9f616d61 |
190 | |
7932f811 |
191 | // // static Int_t pxold, pyold; |
9f616d61 |
192 | |
7b7c1533 |
193 | // AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ; |
9f616d61 |
194 | |
7932f811 |
195 | // static TGraph * digitgraph = 0 ; |
83974468 |
196 | |
7932f811 |
197 | // if (!gPad->IsEditable()) return; |
83974468 |
198 | |
7932f811 |
199 | // TH2F * histo = 0 ; |
200 | // TCanvas * histocanvas ; |
83974468 |
201 | |
7932f811 |
202 | // switch (event) { |
83974468 |
203 | |
7932f811 |
204 | // case kButton1Down: { |
205 | // AliPHOSDigit * digit ; |
7b7c1533 |
206 | // AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ; |
207 | // AliPHOSGeometry * phosgeom = (AliPHOSGeometry*)gime->PHOSGeometry(); |
7932f811 |
208 | // Int_t iDigit; |
209 | // Int_t relid[4] ; |
83974468 |
210 | |
7932f811 |
211 | // const Int_t kMulDigit = AliPHOSEmcRecPoint::GetDigitsMultiplicity() ; |
212 | // Float_t * xi = new Float_t[kMulDigit] ; |
213 | // Float_t * zi = new Float_t[kMulDigit] ; |
83974468 |
214 | |
7932f811 |
215 | // // create the histogram for the single cluster |
216 | // // 1. gets histogram boundaries |
217 | // Float_t ximax = -999. ; |
218 | // Float_t zimax = -999. ; |
219 | // Float_t ximin = 999. ; |
220 | // Float_t zimin = 999. ; |
83974468 |
221 | |
7932f811 |
222 | // for(iDigit=0; iDigit<kMulDigit; iDigit++) { |
7b7c1533 |
223 | // digit = (AliPHOSDigit *) ( gime->Digit(fDigitsList[iDigit]) ) ; |
7932f811 |
224 | // phosgeom->AbsToRelNumbering(digit->GetId(), relid) ; |
225 | // phosgeom->RelPosInModule(relid, xi[iDigit], zi[iDigit]); |
226 | // if ( xi[iDigit] > ximax ) |
227 | // ximax = xi[iDigit] ; |
228 | // if ( xi[iDigit] < ximin ) |
229 | // ximin = xi[iDigit] ; |
230 | // if ( zi[iDigit] > zimax ) |
231 | // zimax = zi[iDigit] ; |
232 | // if ( zi[iDigit] < zimin ) |
233 | // zimin = zi[iDigit] ; |
234 | // } |
235 | // ximax += phosgeom->GetCrystalSize(0) / 2. ; |
236 | // zimax += phosgeom->GetCrystalSize(2) / 2. ; |
237 | // ximin -= phosgeom->GetCrystalSize(0) / 2. ; |
238 | // zimin -= phosgeom->GetCrystalSize(2) / 2. ; |
239 | // Int_t xdim = (int)( (ximax - ximin ) / phosgeom->GetCrystalSize(0) + 0.5 ) ; |
240 | // Int_t zdim = (int)( (zimax - zimin ) / phosgeom->GetCrystalSize(2) + 0.5 ) ; |
83974468 |
241 | |
7932f811 |
242 | // // 2. gets the histogram title |
83974468 |
243 | |
7932f811 |
244 | // Text_t title[100] ; |
245 | // sprintf(title,"Energy=%1.2f GeV ; Digits ; %d ", GetEnergy(), GetDigitsMultiplicity()) ; |
83974468 |
246 | |
7932f811 |
247 | // if (!histo) { |
248 | // delete histo ; |
249 | // histo = 0 ; |
250 | // } |
251 | // histo = new TH2F("cluster3D", title, xdim, ximin, ximax, zdim, zimin, zimax) ; |
83974468 |
252 | |
7932f811 |
253 | // Float_t x, z ; |
254 | // for(iDigit=0; iDigit<kMulDigit; iDigit++) { |
7b7c1533 |
255 | // digit = (AliPHOSDigit *) ( gime->Digit(fDigitsList[iDigit]) ) ; |
7932f811 |
256 | // phosgeom->AbsToRelNumbering(digit->GetId(), relid) ; |
257 | // phosgeom->RelPosInModule(relid, x, z); |
258 | // histo->Fill(x, z, fEnergyList[iDigit] ) ; |
259 | // } |
83974468 |
260 | |
7932f811 |
261 | // if (!digitgraph) { |
262 | // digitgraph = new TGraph(kMulDigit,xi,zi); |
263 | // digitgraph-> SetMarkerStyle(5) ; |
264 | // digitgraph-> SetMarkerSize(1.) ; |
265 | // digitgraph-> SetMarkerColor(1) ; |
266 | // digitgraph-> Paint("P") ; |
267 | // } |
83974468 |
268 | |
7932f811 |
269 | // Print() ; |
270 | // histocanvas = new TCanvas("cluster", "a single cluster", 600, 500) ; |
271 | // histocanvas->Draw() ; |
272 | // histo->Draw("lego1") ; |
83974468 |
273 | |
7932f811 |
274 | // delete[] xi ; |
275 | // delete[] zi ; |
83974468 |
276 | |
7932f811 |
277 | // break; |
278 | // } |
83974468 |
279 | |
7932f811 |
280 | // case kButton1Up: |
281 | // if (digitgraph) { |
282 | // delete digitgraph ; |
283 | // digitgraph = 0 ; |
284 | // } |
285 | // break; |
9f616d61 |
286 | |
7932f811 |
287 | // } |
9f616d61 |
288 | } |
289 | |
d15a28e7 |
290 | //____________________________________________________________________________ |
7932f811 |
291 | void AliPHOSEmcRecPoint::EvalDispersion(Float_t logWeight,TClonesArray * digits) |
d15a28e7 |
292 | { |
b2a60966 |
293 | // Calculates the dispersion of the shower at the origine of the RecPoint |
294 | |
e5b16749 |
295 | Float_t d = 0. ; |
296 | Float_t wtot = 0. ; |
d15a28e7 |
297 | |
d084d50d |
298 | Float_t x = 0.; |
299 | Float_t z = 0.; |
d15a28e7 |
300 | |
301 | AliPHOSDigit * digit ; |
7b7c1533 |
302 | |
303 | AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ; |
304 | AliPHOSGeometry * phosgeom = (AliPHOSGeometry*)gime->PHOSGeometry(); |
d15a28e7 |
305 | |
e5b16749 |
306 | |
307 | // Calculates the center of gravity in the local PHOS-module coordinates |
308 | |
d15a28e7 |
309 | Int_t iDigit; |
e5b16749 |
310 | |
311 | for(iDigit=0; iDigit<fMulDigit; iDigit++) { |
312 | digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ; |
313 | Int_t relid[4] ; |
314 | Float_t xi ; |
315 | Float_t zi ; |
316 | phosgeom->AbsToRelNumbering(digit->GetId(), relid) ; |
317 | phosgeom->RelPosInModule(relid, xi, zi); |
318 | Float_t w = TMath::Max( 0., logWeight + TMath::Log( fEnergyList[iDigit] / fAmp ) ) ; |
319 | x += xi * w ; |
320 | z += zi * w ; |
321 | wtot += w ; |
322 | } |
323 | x /= wtot ; |
324 | z /= wtot ; |
325 | |
326 | |
327 | // Calculates the dispersion in coordinates |
328 | wtot = 0.; |
88714635 |
329 | for(iDigit=0; iDigit < fMulDigit; iDigit++) { |
7932f811 |
330 | digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ; |
d15a28e7 |
331 | Int_t relid[4] ; |
332 | Float_t xi ; |
333 | Float_t zi ; |
92862013 |
334 | phosgeom->AbsToRelNumbering(digit->GetId(), relid) ; |
335 | phosgeom->RelPosInModule(relid, xi, zi); |
7932f811 |
336 | Float_t w = TMath::Max(0.,logWeight+TMath::Log(fEnergyList[iDigit]/fAmp ) ) ; |
92862013 |
337 | d += w*((xi-x)*(xi-x) + (zi-z)*(zi-z) ) ; |
d15a28e7 |
338 | wtot+=w ; |
d084d50d |
339 | |
340 | |
d15a28e7 |
341 | } |
e5b16749 |
342 | |
7932f811 |
343 | |
92862013 |
344 | d /= wtot ; |
d15a28e7 |
345 | |
7932f811 |
346 | fDispersion = TMath::Sqrt(d) ; |
c63c49e9 |
347 | |
d15a28e7 |
348 | } |
fad3e5b9 |
349 | //______________________________________________________________________________ |
e5b16749 |
350 | void AliPHOSEmcRecPoint::EvalCoreEnergy(Float_t logWeight, TClonesArray * digits) |
fad3e5b9 |
351 | { |
a4e98857 |
352 | // This function calculates energy in the core, |
353 | // i.e. within a radius rad = 3cm around the center. Beyond this radius |
354 | // in accordance with shower profile the energy deposition |
fad3e5b9 |
355 | // should be less than 2% |
356 | |
fad3e5b9 |
357 | Float_t coreRadius = 3 ; |
358 | |
e5b16749 |
359 | Float_t x = 0 ; |
360 | Float_t z = 0 ; |
fad3e5b9 |
361 | |
362 | AliPHOSDigit * digit ; |
7b7c1533 |
363 | |
364 | AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ; |
365 | AliPHOSGeometry * phosgeom = (AliPHOSGeometry*)gime->PHOSGeometry(); |
366 | |
fad3e5b9 |
367 | Int_t iDigit; |
e5b16749 |
368 | |
369 | // Calculates the center of gravity in the local PHOS-module coordinates |
370 | Float_t wtot = 0; |
371 | for(iDigit=0; iDigit<fMulDigit; iDigit++) { |
372 | digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ; |
373 | Int_t relid[4] ; |
374 | Float_t xi ; |
375 | Float_t zi ; |
376 | phosgeom->AbsToRelNumbering(digit->GetId(), relid) ; |
377 | phosgeom->RelPosInModule(relid, xi, zi); |
378 | Float_t w = TMath::Max( 0., logWeight + TMath::Log( fEnergyList[iDigit] / fAmp ) ) ; |
379 | x += xi * w ; |
380 | z += zi * w ; |
381 | wtot += w ; |
382 | } |
383 | x /= wtot ; |
384 | z /= wtot ; |
385 | |
386 | |
fad3e5b9 |
387 | for(iDigit=0; iDigit < fMulDigit; iDigit++) { |
7932f811 |
388 | digit = (AliPHOSDigit *) ( digits->At(fDigitsList[iDigit]) ) ; |
fad3e5b9 |
389 | Int_t relid[4] ; |
390 | Float_t xi ; |
391 | Float_t zi ; |
392 | phosgeom->AbsToRelNumbering(digit->GetId(), relid) ; |
393 | phosgeom->RelPosInModule(relid, xi, zi); |
394 | Float_t distance = TMath::Sqrt((xi-x)*(xi-x)+(zi-z)*(zi-z)) ; |
395 | if(distance < coreRadius) |
7932f811 |
396 | fCoreEnergy += fEnergyList[iDigit] ; |
fad3e5b9 |
397 | } |
398 | |
fad3e5b9 |
399 | } |
d15a28e7 |
400 | |
401 | //____________________________________________________________________________ |
7932f811 |
402 | void AliPHOSEmcRecPoint::EvalElipsAxis(Float_t logWeight,TClonesArray * digits) |
d15a28e7 |
403 | { |
b2a60966 |
404 | // Calculates the axis of the shower ellipsoid |
83974468 |
405 | |
e8dbb96e |
406 | Double_t wtot = 0. ; |
407 | Double_t x = 0.; |
408 | Double_t z = 0.; |
409 | Double_t dxx = 0.; |
410 | Double_t dzz = 0.; |
411 | Double_t dxz = 0.; |
d15a28e7 |
412 | |
413 | AliPHOSDigit * digit ; |
7b7c1533 |
414 | |
415 | AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ; |
416 | AliPHOSGeometry * phosgeom = (AliPHOSGeometry*)gime->PHOSGeometry(); |
417 | |
d15a28e7 |
418 | Int_t iDigit; |
419 | |
e5b16749 |
420 | |
d15a28e7 |
421 | for(iDigit=0; iDigit<fMulDigit; iDigit++) { |
7932f811 |
422 | digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ; |
d15a28e7 |
423 | Int_t relid[4] ; |
424 | Float_t xi ; |
425 | Float_t zi ; |
92862013 |
426 | phosgeom->AbsToRelNumbering(digit->GetId(), relid) ; |
427 | phosgeom->RelPosInModule(relid, xi, zi); |
7932f811 |
428 | Double_t w = TMath::Max(0.,logWeight+TMath::Log(fEnergyList[iDigit]/fAmp ) ) ; |
92862013 |
429 | dxx += w * xi * xi ; |
d15a28e7 |
430 | x += w * xi ; |
92862013 |
431 | dzz += w * zi * zi ; |
d15a28e7 |
432 | z += w * zi ; |
92862013 |
433 | dxz += w * xi * zi ; |
d15a28e7 |
434 | wtot += w ; |
435 | } |
92862013 |
436 | dxx /= wtot ; |
d15a28e7 |
437 | x /= wtot ; |
92862013 |
438 | dxx -= x * x ; |
439 | dzz /= wtot ; |
d15a28e7 |
440 | z /= wtot ; |
92862013 |
441 | dzz -= z * z ; |
442 | dxz /= wtot ; |
443 | dxz -= x * z ; |
d15a28e7 |
444 | |
69183710 |
445 | // //Apply correction due to non-perpendicular incidence |
446 | // Double_t CosX ; |
447 | // Double_t CosZ ; |
7b7c1533 |
448 | // AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ; |
449 | // AliPHOSGeometry * phosgeom = (AliPHOSGeometry*)gime->PHOSGeometry(); |
450 | // Double_t DistanceToIP= (Double_t ) phosgeom->GetIPtoCrystalSurface() ; |
69183710 |
451 | |
452 | // CosX = DistanceToIP/TMath::Sqrt(DistanceToIP*DistanceToIP+x*x) ; |
453 | // CosZ = DistanceToIP/TMath::Sqrt(DistanceToIP*DistanceToIP+z*z) ; |
454 | |
455 | // dxx = dxx/(CosX*CosX) ; |
456 | // dzz = dzz/(CosZ*CosZ) ; |
457 | // dxz = dxz/(CosX*CosZ) ; |
458 | |
459 | |
7932f811 |
460 | fLambda[0] = 0.5 * (dxx + dzz) + TMath::Sqrt( 0.25 * (dxx - dzz) * (dxx - dzz) + dxz * dxz ) ; |
461 | if(fLambda[0] > 0) |
462 | fLambda[0] = TMath::Sqrt(fLambda[0]) ; |
e8dbb96e |
463 | |
7932f811 |
464 | fLambda[1] = 0.5 * (dxx + dzz) - TMath::Sqrt( 0.25 * (dxx - dzz) * (dxx - dzz) + dxz * dxz ) ; |
465 | if(fLambda[1] > 0) //To avoid exception if numerical errors lead to negative lambda. |
466 | fLambda[1] = TMath::Sqrt(fLambda[1]) ; |
e8dbb96e |
467 | else |
7932f811 |
468 | fLambda[1]= 0. ; |
d15a28e7 |
469 | } |
470 | |
b2a60966 |
471 | //____________________________________________________________________________ |
7932f811 |
472 | void AliPHOSEmcRecPoint::EvalAll(Float_t logWeight, TClonesArray * digits ) |
ad8cfaf4 |
473 | { |
baef0810 |
474 | // Evaluates all shower parameters |
475 | |
7932f811 |
476 | AliPHOSRecPoint::EvalAll(logWeight,digits) ; |
477 | EvalLocalPosition(logWeight, digits) ; |
478 | EvalElipsAxis(logWeight, digits) ; |
479 | EvalDispersion(logWeight, digits) ; |
e5b16749 |
480 | EvalCoreEnergy(logWeight, digits); |
ad8cfaf4 |
481 | } |
482 | //____________________________________________________________________________ |
7932f811 |
483 | void AliPHOSEmcRecPoint::EvalLocalPosition(Float_t logWeight, TClonesArray * digits) |
b2a60966 |
484 | { |
485 | // Calculates the center of gravity in the local PHOS-module coordinates |
b2a60966 |
486 | Float_t wtot = 0. ; |
487 | |
488 | Int_t relid[4] ; |
489 | |
490 | Float_t x = 0. ; |
491 | Float_t z = 0. ; |
492 | |
493 | AliPHOSDigit * digit ; |
494 | |
7b7c1533 |
495 | AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ; |
496 | AliPHOSGeometry * phosgeom = (AliPHOSGeometry*)gime->PHOSGeometry(); |
b2a60966 |
497 | |
498 | Int_t iDigit; |
499 | |
b2a60966 |
500 | for(iDigit=0; iDigit<fMulDigit; iDigit++) { |
7932f811 |
501 | digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ; |
b2a60966 |
502 | |
503 | Float_t xi ; |
504 | Float_t zi ; |
505 | phosgeom->AbsToRelNumbering(digit->GetId(), relid) ; |
506 | phosgeom->RelPosInModule(relid, xi, zi); |
7932f811 |
507 | Float_t w = TMath::Max( 0., logWeight + TMath::Log( fEnergyList[iDigit] / fAmp ) ) ; |
b2a60966 |
508 | x += xi * w ; |
509 | z += zi * w ; |
510 | wtot += w ; |
b2a60966 |
511 | |
9ce1a8d9 |
512 | } |
69183710 |
513 | |
514 | x /= wtot ; |
515 | z /= wtot ; |
ad8cfaf4 |
516 | |
517 | // Correction for the depth of the shower starting point (TDR p 127) |
518 | Float_t para = 0.925 ; |
519 | Float_t parb = 6.52 ; |
520 | |
1b799736 |
521 | Float_t xo,yo,zo ; //Coordinates of the origin |
522 | gAlice->Generator()->GetOrigin(xo,yo,zo) ; |
523 | |
5830e1d9 |
524 | Float_t phi = phosgeom->GetPHOSAngle(relid[0]) ; |
1b799736 |
525 | |
526 | //Transform to the local ref.frame |
527 | Float_t xoL,yoL ; |
528 | xoL = xo*TMath::Cos(phi)-yo*TMath::Sin(phi) ; |
529 | yoL = xo*TMath::Sin(phi)+yo*TMath::Cos(phi) ; |
530 | |
531 | Float_t radius = TMath::Sqrt((xoL-x)*(xoL-x)+ |
5830e1d9 |
532 | (phosgeom->GetIPtoCrystalSurface()-yoL)*(phosgeom->GetIPtoCrystalSurface()-yoL)+ |
533 | (zo-z)*(zo-z)); |
1b799736 |
534 | |
535 | Float_t incidencephi = TMath::ATan((x-xoL ) / radius) ; |
536 | Float_t incidencetheta = TMath::ATan((z-zo) / radius) ; |
ad8cfaf4 |
537 | |
538 | Float_t depthx = ( para * TMath::Log(fAmp) + parb ) * TMath::Sin(incidencephi) ; |
539 | Float_t depthz = ( para * TMath::Log(fAmp) + parb ) * TMath::Sin(incidencetheta) ; |
540 | |
541 | |
542 | fLocPos.SetX(x - depthx) ; |
b2a60966 |
543 | fLocPos.SetY(0.) ; |
ad8cfaf4 |
544 | fLocPos.SetZ(z - depthz) ; |
b2a60966 |
545 | |
bc68d12c |
546 | fLocPosM = 0 ; |
b2a60966 |
547 | } |
548 | |
d15a28e7 |
549 | //____________________________________________________________________________ |
ad8cfaf4 |
550 | Float_t AliPHOSEmcRecPoint::GetMaximalEnergy(void) const |
d15a28e7 |
551 | { |
b2a60966 |
552 | // Finds the maximum energy in the cluster |
553 | |
d15a28e7 |
554 | Float_t menergy = 0. ; |
555 | |
556 | Int_t iDigit; |
557 | |
558 | for(iDigit=0; iDigit<fMulDigit; iDigit++) { |
559 | |
560 | if(fEnergyList[iDigit] > menergy) |
561 | menergy = fEnergyList[iDigit] ; |
562 | } |
563 | return menergy ; |
564 | } |
565 | |
566 | //____________________________________________________________________________ |
ad8cfaf4 |
567 | Int_t AliPHOSEmcRecPoint::GetMultiplicityAtLevel(const Float_t H) const |
d15a28e7 |
568 | { |
b2a60966 |
569 | // Calculates the multiplicity of digits with energy larger than H*energy |
570 | |
d15a28e7 |
571 | Int_t multipl = 0 ; |
572 | Int_t iDigit ; |
573 | for(iDigit=0; iDigit<fMulDigit; iDigit++) { |
574 | |
575 | if(fEnergyList[iDigit] > H * fAmp) |
576 | multipl++ ; |
577 | } |
578 | return multipl ; |
579 | } |
580 | |
581 | //____________________________________________________________________________ |
7932f811 |
582 | Int_t AliPHOSEmcRecPoint::GetNumberOfLocalMax(Int_t * maxAt, Float_t * maxAtEnergy, |
583 | Float_t locMaxCut,TClonesArray * digits) const |
d15a28e7 |
584 | { |
b2a60966 |
585 | // Calculates the number of local maxima in the cluster using fLocalMaxCut as the minimum |
a4e98857 |
586 | // energy difference between two local maxima |
b2a60966 |
587 | |
d15a28e7 |
588 | AliPHOSDigit * digit ; |
589 | AliPHOSDigit * digitN ; |
590 | |
591 | |
592 | Int_t iDigitN ; |
593 | Int_t iDigit ; |
594 | |
7932f811 |
595 | for(iDigit = 0; iDigit < fMulDigit; iDigit++) |
596 | maxAt[iDigit] = (Int_t) digits->At(fDigitsList[iDigit]) ; |
597 | |
d15a28e7 |
598 | |
6ad0bfa0 |
599 | for(iDigit = 0 ; iDigit < fMulDigit; iDigit++) { |
9f616d61 |
600 | if(maxAt[iDigit] != -1) { |
601 | digit = (AliPHOSDigit *) maxAt[iDigit] ; |
83974468 |
602 | |
6ad0bfa0 |
603 | for(iDigitN = 0; iDigitN < fMulDigit; iDigitN++) { |
7932f811 |
604 | digitN = (AliPHOSDigit *) digits->At(fDigitsList[iDigitN]) ; |
d15a28e7 |
605 | |
9f616d61 |
606 | if ( AreNeighbours(digit, digitN) ) { |
d15a28e7 |
607 | if (fEnergyList[iDigit] > fEnergyList[iDigitN] ) { |
608 | maxAt[iDigitN] = -1 ; |
6ad0bfa0 |
609 | // but may be digit too is not local max ? |
7932f811 |
610 | if(fEnergyList[iDigit] < fEnergyList[iDigitN] + locMaxCut) |
d15a28e7 |
611 | maxAt[iDigit] = -1 ; |
612 | } |
613 | else { |
614 | maxAt[iDigit] = -1 ; |
6ad0bfa0 |
615 | // but may be digitN too is not local max ? |
7932f811 |
616 | if(fEnergyList[iDigit] > fEnergyList[iDigitN] - locMaxCut) |
d15a28e7 |
617 | maxAt[iDigitN] = -1 ; |
618 | } |
619 | } // if Areneighbours |
620 | } // while digitN |
621 | } // slot not empty |
622 | } // while digit |
623 | |
624 | iDigitN = 0 ; |
6ad0bfa0 |
625 | for(iDigit = 0; iDigit < fMulDigit; iDigit++) { |
d15a28e7 |
626 | if(maxAt[iDigit] != -1){ |
627 | maxAt[iDigitN] = maxAt[iDigit] ; |
9f616d61 |
628 | maxAtEnergy[iDigitN] = fEnergyList[iDigit] ; |
629 | iDigitN++ ; |
d15a28e7 |
630 | } |
631 | } |
632 | return iDigitN ; |
633 | } |
634 | |
d15a28e7 |
635 | |
d15a28e7 |
636 | |
637 | //____________________________________________________________________________ |
638 | void AliPHOSEmcRecPoint::Print(Option_t * option) |
639 | { |
b2a60966 |
640 | // Print the list of digits belonging to the cluster |
641 | |
d15a28e7 |
642 | cout << "AliPHOSEmcRecPoint: " << endl ; |
643 | |
d15a28e7 |
644 | Int_t iDigit; |
7932f811 |
645 | cout << " digits # = " ; |
646 | for(iDigit=0; iDigit<fMulDigit; iDigit++) |
647 | cout << fDigitsList[iDigit] << " " ; |
648 | cout << endl ; |
649 | |
650 | cout << " Energies = " ; |
651 | for(iDigit=0; iDigit<fMulDigit; iDigit++) |
652 | cout << fEnergyList[iDigit] << " "; |
653 | cout << endl ; |
83974468 |
654 | |
bc68d12c |
655 | cout << " Primaries " ; |
656 | for(iDigit = 0;iDigit < fMulTrack; iDigit++) |
657 | cout << fTracksList[iDigit] << " " << endl ; |
658 | |
d15a28e7 |
659 | cout << " Multiplicity = " << fMulDigit << endl ; |
660 | cout << " Cluster Energy = " << fAmp << endl ; |
bc68d12c |
661 | cout << " Number of primaries " << fMulTrack << endl ; |
83974468 |
662 | cout << " Stored at position " << GetIndexInList() << endl ; |
663 | |
d15a28e7 |
664 | } |
88714635 |
665 | |
7932f811 |
666 | |