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 | |
d15a28e7 |
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 | |
92862013 |
295 | Float_t d = 0 ; |
d15a28e7 |
296 | Float_t wtot = 0 ; |
297 | |
92862013 |
298 | TVector3 locpos; |
299 | GetLocalPosition(locpos); |
300 | Float_t x = locpos.X() ; |
301 | Float_t z = locpos.Z() ; |
d15a28e7 |
302 | |
303 | AliPHOSDigit * digit ; |
7b7c1533 |
304 | |
305 | AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ; |
306 | AliPHOSGeometry * phosgeom = (AliPHOSGeometry*)gime->PHOSGeometry(); |
d15a28e7 |
307 | |
308 | Int_t iDigit; |
88714635 |
309 | for(iDigit=0; iDigit < fMulDigit; iDigit++) { |
7932f811 |
310 | digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ; |
d15a28e7 |
311 | Int_t relid[4] ; |
312 | Float_t xi ; |
313 | Float_t zi ; |
92862013 |
314 | phosgeom->AbsToRelNumbering(digit->GetId(), relid) ; |
315 | phosgeom->RelPosInModule(relid, xi, zi); |
7932f811 |
316 | Float_t w = TMath::Max(0.,logWeight+TMath::Log(fEnergyList[iDigit]/fAmp ) ) ; |
92862013 |
317 | d += w*((xi-x)*(xi-x) + (zi-z)*(zi-z) ) ; |
d15a28e7 |
318 | wtot+=w ; |
319 | } |
320 | |
7932f811 |
321 | |
92862013 |
322 | d /= wtot ; |
d15a28e7 |
323 | |
7932f811 |
324 | fDispersion = TMath::Sqrt(d) ; |
d15a28e7 |
325 | } |
fad3e5b9 |
326 | //______________________________________________________________________________ |
7932f811 |
327 | void AliPHOSEmcRecPoint::EvalCoreEnergy(TClonesArray * digits) |
fad3e5b9 |
328 | { |
a4e98857 |
329 | // This function calculates energy in the core, |
330 | // i.e. within a radius rad = 3cm around the center. Beyond this radius |
331 | // in accordance with shower profile the energy deposition |
fad3e5b9 |
332 | // should be less than 2% |
333 | |
fad3e5b9 |
334 | Float_t coreRadius = 3 ; |
335 | |
336 | TVector3 locpos; |
337 | GetLocalPosition(locpos); |
338 | Float_t x = locpos.X() ; |
339 | Float_t z = locpos.Z() ; |
340 | |
341 | AliPHOSDigit * digit ; |
7b7c1533 |
342 | |
343 | AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ; |
344 | AliPHOSGeometry * phosgeom = (AliPHOSGeometry*)gime->PHOSGeometry(); |
345 | |
fad3e5b9 |
346 | Int_t iDigit; |
347 | for(iDigit=0; iDigit < fMulDigit; iDigit++) { |
7932f811 |
348 | digit = (AliPHOSDigit *) ( digits->At(fDigitsList[iDigit]) ) ; |
fad3e5b9 |
349 | Int_t relid[4] ; |
350 | Float_t xi ; |
351 | Float_t zi ; |
352 | phosgeom->AbsToRelNumbering(digit->GetId(), relid) ; |
353 | phosgeom->RelPosInModule(relid, xi, zi); |
354 | Float_t distance = TMath::Sqrt((xi-x)*(xi-x)+(zi-z)*(zi-z)) ; |
355 | if(distance < coreRadius) |
7932f811 |
356 | fCoreEnergy += fEnergyList[iDigit] ; |
fad3e5b9 |
357 | } |
358 | |
fad3e5b9 |
359 | } |
d15a28e7 |
360 | |
361 | //____________________________________________________________________________ |
7932f811 |
362 | void AliPHOSEmcRecPoint::EvalElipsAxis(Float_t logWeight,TClonesArray * digits) |
d15a28e7 |
363 | { |
b2a60966 |
364 | // Calculates the axis of the shower ellipsoid |
83974468 |
365 | |
e8dbb96e |
366 | Double_t wtot = 0. ; |
367 | Double_t x = 0.; |
368 | Double_t z = 0.; |
369 | Double_t dxx = 0.; |
370 | Double_t dzz = 0.; |
371 | Double_t dxz = 0.; |
d15a28e7 |
372 | |
373 | AliPHOSDigit * digit ; |
7b7c1533 |
374 | |
375 | AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ; |
376 | AliPHOSGeometry * phosgeom = (AliPHOSGeometry*)gime->PHOSGeometry(); |
377 | |
d15a28e7 |
378 | Int_t iDigit; |
379 | |
380 | for(iDigit=0; iDigit<fMulDigit; iDigit++) { |
7932f811 |
381 | digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ; |
d15a28e7 |
382 | Int_t relid[4] ; |
383 | Float_t xi ; |
384 | Float_t zi ; |
92862013 |
385 | phosgeom->AbsToRelNumbering(digit->GetId(), relid) ; |
386 | phosgeom->RelPosInModule(relid, xi, zi); |
7932f811 |
387 | Double_t w = TMath::Max(0.,logWeight+TMath::Log(fEnergyList[iDigit]/fAmp ) ) ; |
92862013 |
388 | dxx += w * xi * xi ; |
d15a28e7 |
389 | x += w * xi ; |
92862013 |
390 | dzz += w * zi * zi ; |
d15a28e7 |
391 | z += w * zi ; |
92862013 |
392 | dxz += w * xi * zi ; |
d15a28e7 |
393 | wtot += w ; |
394 | } |
92862013 |
395 | dxx /= wtot ; |
d15a28e7 |
396 | x /= wtot ; |
92862013 |
397 | dxx -= x * x ; |
398 | dzz /= wtot ; |
d15a28e7 |
399 | z /= wtot ; |
92862013 |
400 | dzz -= z * z ; |
401 | dxz /= wtot ; |
402 | dxz -= x * z ; |
d15a28e7 |
403 | |
69183710 |
404 | // //Apply correction due to non-perpendicular incidence |
405 | // Double_t CosX ; |
406 | // Double_t CosZ ; |
7b7c1533 |
407 | // AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ; |
408 | // AliPHOSGeometry * phosgeom = (AliPHOSGeometry*)gime->PHOSGeometry(); |
409 | // Double_t DistanceToIP= (Double_t ) phosgeom->GetIPtoCrystalSurface() ; |
69183710 |
410 | |
411 | // CosX = DistanceToIP/TMath::Sqrt(DistanceToIP*DistanceToIP+x*x) ; |
412 | // CosZ = DistanceToIP/TMath::Sqrt(DistanceToIP*DistanceToIP+z*z) ; |
413 | |
414 | // dxx = dxx/(CosX*CosX) ; |
415 | // dzz = dzz/(CosZ*CosZ) ; |
416 | // dxz = dxz/(CosX*CosZ) ; |
417 | |
418 | |
7932f811 |
419 | fLambda[0] = 0.5 * (dxx + dzz) + TMath::Sqrt( 0.25 * (dxx - dzz) * (dxx - dzz) + dxz * dxz ) ; |
420 | if(fLambda[0] > 0) |
421 | fLambda[0] = TMath::Sqrt(fLambda[0]) ; |
e8dbb96e |
422 | |
7932f811 |
423 | fLambda[1] = 0.5 * (dxx + dzz) - TMath::Sqrt( 0.25 * (dxx - dzz) * (dxx - dzz) + dxz * dxz ) ; |
424 | if(fLambda[1] > 0) //To avoid exception if numerical errors lead to negative lambda. |
425 | fLambda[1] = TMath::Sqrt(fLambda[1]) ; |
e8dbb96e |
426 | else |
7932f811 |
427 | fLambda[1]= 0. ; |
d15a28e7 |
428 | } |
429 | |
b2a60966 |
430 | //____________________________________________________________________________ |
7932f811 |
431 | void AliPHOSEmcRecPoint::EvalAll(Float_t logWeight, TClonesArray * digits ) |
ad8cfaf4 |
432 | { |
baef0810 |
433 | // Evaluates all shower parameters |
434 | |
7932f811 |
435 | AliPHOSRecPoint::EvalAll(logWeight,digits) ; |
436 | EvalLocalPosition(logWeight, digits) ; |
437 | EvalElipsAxis(logWeight, digits) ; |
438 | EvalDispersion(logWeight, digits) ; |
439 | EvalCoreEnergy(digits); |
ad8cfaf4 |
440 | } |
441 | //____________________________________________________________________________ |
7932f811 |
442 | void AliPHOSEmcRecPoint::EvalLocalPosition(Float_t logWeight, TClonesArray * digits) |
b2a60966 |
443 | { |
444 | // Calculates the center of gravity in the local PHOS-module coordinates |
b2a60966 |
445 | Float_t wtot = 0. ; |
446 | |
447 | Int_t relid[4] ; |
448 | |
449 | Float_t x = 0. ; |
450 | Float_t z = 0. ; |
451 | |
452 | AliPHOSDigit * digit ; |
453 | |
7b7c1533 |
454 | AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ; |
455 | AliPHOSGeometry * phosgeom = (AliPHOSGeometry*)gime->PHOSGeometry(); |
b2a60966 |
456 | |
457 | Int_t iDigit; |
458 | |
b2a60966 |
459 | for(iDigit=0; iDigit<fMulDigit; iDigit++) { |
7932f811 |
460 | digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ; |
b2a60966 |
461 | |
462 | Float_t xi ; |
463 | Float_t zi ; |
464 | phosgeom->AbsToRelNumbering(digit->GetId(), relid) ; |
465 | phosgeom->RelPosInModule(relid, xi, zi); |
7932f811 |
466 | Float_t w = TMath::Max( 0., logWeight + TMath::Log( fEnergyList[iDigit] / fAmp ) ) ; |
b2a60966 |
467 | x += xi * w ; |
468 | z += zi * w ; |
469 | wtot += w ; |
b2a60966 |
470 | |
9ce1a8d9 |
471 | } |
69183710 |
472 | |
473 | x /= wtot ; |
474 | z /= wtot ; |
ad8cfaf4 |
475 | |
476 | // Correction for the depth of the shower starting point (TDR p 127) |
477 | Float_t para = 0.925 ; |
478 | Float_t parb = 6.52 ; |
479 | |
1b799736 |
480 | Float_t xo,yo,zo ; //Coordinates of the origin |
481 | gAlice->Generator()->GetOrigin(xo,yo,zo) ; |
482 | |
5830e1d9 |
483 | Float_t phi = phosgeom->GetPHOSAngle(relid[0]) ; |
1b799736 |
484 | |
485 | //Transform to the local ref.frame |
486 | Float_t xoL,yoL ; |
487 | xoL = xo*TMath::Cos(phi)-yo*TMath::Sin(phi) ; |
488 | yoL = xo*TMath::Sin(phi)+yo*TMath::Cos(phi) ; |
489 | |
490 | Float_t radius = TMath::Sqrt((xoL-x)*(xoL-x)+ |
5830e1d9 |
491 | (phosgeom->GetIPtoCrystalSurface()-yoL)*(phosgeom->GetIPtoCrystalSurface()-yoL)+ |
492 | (zo-z)*(zo-z)); |
1b799736 |
493 | |
494 | Float_t incidencephi = TMath::ATan((x-xoL ) / radius) ; |
495 | Float_t incidencetheta = TMath::ATan((z-zo) / radius) ; |
ad8cfaf4 |
496 | |
497 | Float_t depthx = ( para * TMath::Log(fAmp) + parb ) * TMath::Sin(incidencephi) ; |
498 | Float_t depthz = ( para * TMath::Log(fAmp) + parb ) * TMath::Sin(incidencetheta) ; |
499 | |
500 | |
501 | fLocPos.SetX(x - depthx) ; |
b2a60966 |
502 | fLocPos.SetY(0.) ; |
ad8cfaf4 |
503 | fLocPos.SetZ(z - depthz) ; |
b2a60966 |
504 | |
bc68d12c |
505 | fLocPosM = 0 ; |
b2a60966 |
506 | } |
507 | |
d15a28e7 |
508 | //____________________________________________________________________________ |
ad8cfaf4 |
509 | Float_t AliPHOSEmcRecPoint::GetMaximalEnergy(void) const |
d15a28e7 |
510 | { |
b2a60966 |
511 | // Finds the maximum energy in the cluster |
512 | |
d15a28e7 |
513 | Float_t menergy = 0. ; |
514 | |
515 | Int_t iDigit; |
516 | |
517 | for(iDigit=0; iDigit<fMulDigit; iDigit++) { |
518 | |
519 | if(fEnergyList[iDigit] > menergy) |
520 | menergy = fEnergyList[iDigit] ; |
521 | } |
522 | return menergy ; |
523 | } |
524 | |
525 | //____________________________________________________________________________ |
ad8cfaf4 |
526 | Int_t AliPHOSEmcRecPoint::GetMultiplicityAtLevel(const Float_t H) const |
d15a28e7 |
527 | { |
b2a60966 |
528 | // Calculates the multiplicity of digits with energy larger than H*energy |
529 | |
d15a28e7 |
530 | Int_t multipl = 0 ; |
531 | Int_t iDigit ; |
532 | for(iDigit=0; iDigit<fMulDigit; iDigit++) { |
533 | |
534 | if(fEnergyList[iDigit] > H * fAmp) |
535 | multipl++ ; |
536 | } |
537 | return multipl ; |
538 | } |
539 | |
540 | //____________________________________________________________________________ |
7932f811 |
541 | Int_t AliPHOSEmcRecPoint::GetNumberOfLocalMax(Int_t * maxAt, Float_t * maxAtEnergy, |
542 | Float_t locMaxCut,TClonesArray * digits) const |
d15a28e7 |
543 | { |
b2a60966 |
544 | // Calculates the number of local maxima in the cluster using fLocalMaxCut as the minimum |
a4e98857 |
545 | // energy difference between two local maxima |
b2a60966 |
546 | |
d15a28e7 |
547 | AliPHOSDigit * digit ; |
548 | AliPHOSDigit * digitN ; |
549 | |
550 | |
551 | Int_t iDigitN ; |
552 | Int_t iDigit ; |
553 | |
7932f811 |
554 | for(iDigit = 0; iDigit < fMulDigit; iDigit++) |
555 | maxAt[iDigit] = (Int_t) digits->At(fDigitsList[iDigit]) ; |
556 | |
d15a28e7 |
557 | |
6ad0bfa0 |
558 | for(iDigit = 0 ; iDigit < fMulDigit; iDigit++) { |
9f616d61 |
559 | if(maxAt[iDigit] != -1) { |
560 | digit = (AliPHOSDigit *) maxAt[iDigit] ; |
83974468 |
561 | |
6ad0bfa0 |
562 | for(iDigitN = 0; iDigitN < fMulDigit; iDigitN++) { |
7932f811 |
563 | digitN = (AliPHOSDigit *) digits->At(fDigitsList[iDigitN]) ; |
d15a28e7 |
564 | |
9f616d61 |
565 | if ( AreNeighbours(digit, digitN) ) { |
d15a28e7 |
566 | if (fEnergyList[iDigit] > fEnergyList[iDigitN] ) { |
567 | maxAt[iDigitN] = -1 ; |
6ad0bfa0 |
568 | // but may be digit too is not local max ? |
7932f811 |
569 | if(fEnergyList[iDigit] < fEnergyList[iDigitN] + locMaxCut) |
d15a28e7 |
570 | maxAt[iDigit] = -1 ; |
571 | } |
572 | else { |
573 | maxAt[iDigit] = -1 ; |
6ad0bfa0 |
574 | // but may be digitN too is not local max ? |
7932f811 |
575 | if(fEnergyList[iDigit] > fEnergyList[iDigitN] - locMaxCut) |
d15a28e7 |
576 | maxAt[iDigitN] = -1 ; |
577 | } |
578 | } // if Areneighbours |
579 | } // while digitN |
580 | } // slot not empty |
581 | } // while digit |
582 | |
583 | iDigitN = 0 ; |
6ad0bfa0 |
584 | for(iDigit = 0; iDigit < fMulDigit; iDigit++) { |
d15a28e7 |
585 | if(maxAt[iDigit] != -1){ |
586 | maxAt[iDigitN] = maxAt[iDigit] ; |
9f616d61 |
587 | maxAtEnergy[iDigitN] = fEnergyList[iDigit] ; |
588 | iDigitN++ ; |
d15a28e7 |
589 | } |
590 | } |
591 | return iDigitN ; |
592 | } |
593 | |
d15a28e7 |
594 | |
d15a28e7 |
595 | |
596 | //____________________________________________________________________________ |
597 | void AliPHOSEmcRecPoint::Print(Option_t * option) |
598 | { |
b2a60966 |
599 | // Print the list of digits belonging to the cluster |
600 | |
d15a28e7 |
601 | cout << "AliPHOSEmcRecPoint: " << endl ; |
602 | |
d15a28e7 |
603 | Int_t iDigit; |
7932f811 |
604 | cout << " digits # = " ; |
605 | for(iDigit=0; iDigit<fMulDigit; iDigit++) |
606 | cout << fDigitsList[iDigit] << " " ; |
607 | cout << endl ; |
608 | |
609 | cout << " Energies = " ; |
610 | for(iDigit=0; iDigit<fMulDigit; iDigit++) |
611 | cout << fEnergyList[iDigit] << " "; |
612 | cout << endl ; |
83974468 |
613 | |
bc68d12c |
614 | cout << " Primaries " ; |
615 | for(iDigit = 0;iDigit < fMulTrack; iDigit++) |
616 | cout << fTracksList[iDigit] << " " << endl ; |
617 | |
d15a28e7 |
618 | cout << " Multiplicity = " << fMulDigit << endl ; |
619 | cout << " Cluster Energy = " << fAmp << endl ; |
bc68d12c |
620 | cout << " Number of primaries " << fMulTrack << endl ; |
83974468 |
621 | cout << " Stored at position " << GetIndexInList() << endl ; |
622 | |
d15a28e7 |
623 | } |
88714635 |
624 | |
7932f811 |
625 | |