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cb86ff6e | 1 | |
f7336fa3 | 2 | /************************************************************************** |
3 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
4 | * * | |
5 | * Author: The ALICE Off-line Project. * | |
6 | * Contributors are mentioned in the code where appropriate. * | |
7 | * * | |
8 | * Permission to use, copy, modify and distribute this software and its * | |
9 | * documentation strictly for non-commercial purposes is hereby granted * | |
10 | * without fee, provided that the above copyright notice appears in all * | |
11 | * copies and that both the copyright notice and this permission notice * | |
12 | * appear in the supporting documentation. The authors make no claims * | |
13 | * about the suitability of this software for any purpose. It is * | |
14 | * provided "as is" without express or implied warranty. * | |
15 | **************************************************************************/ | |
16 | ||
88cb7938 | 17 | /* $Id$ */ |
f7336fa3 | 18 | |
19 | /////////////////////////////////////////////////////////////////////////////// | |
20 | // // | |
6d50f529 | 21 | // TRD cluster finder // |
f7336fa3 | 22 | // // |
23 | /////////////////////////////////////////////////////////////////////////////// | |
24 | ||
25 | #include <TF1.h> | |
94de3818 | 26 | #include <TTree.h> |
793ff80c | 27 | #include <TH1.h> |
a819a5f7 | 28 | #include <TFile.h> |
f7336fa3 | 29 | |
88cb7938 | 30 | #include "AliRunLoader.h" |
31 | #include "AliLoader.h" | |
928e9fae | 32 | #include "AliRawReader.h" |
6d50f529 | 33 | #include "AliLog.h" |
793ff80c | 34 | |
f7336fa3 | 35 | #include "AliTRDclusterizerV1.h" |
f7336fa3 | 36 | #include "AliTRDgeometry.h" |
6f1e466d | 37 | #include "AliTRDdataArrayF.h" |
793ff80c | 38 | #include "AliTRDdataArrayI.h" |
39 | #include "AliTRDdigitsManager.h" | |
a5cadd36 | 40 | #include "AliTRDpadPlane.h" |
928e9fae | 41 | #include "AliTRDrawData.h" |
3551db50 | 42 | #include "AliTRDcalibDB.h" |
3becff3c | 43 | #include "AliTRDSimParam.h" |
3551db50 | 44 | #include "AliTRDRecParam.h" |
45 | #include "AliTRDCommonParam.h" | |
c85a4951 | 46 | #include "AliTRDcluster.h" |
f7336fa3 | 47 | |
48 | ClassImp(AliTRDclusterizerV1) | |
49 | ||
50 | //_____________________________________________________________________________ | |
6d50f529 | 51 | AliTRDclusterizerV1::AliTRDclusterizerV1() |
52 | :AliTRDclusterizer() | |
53 | ,fDigitsManager(NULL) | |
f7336fa3 | 54 | { |
55 | // | |
56 | // AliTRDclusterizerV1 default constructor | |
57 | // | |
58 | ||
f7336fa3 | 59 | } |
60 | ||
61 | //_____________________________________________________________________________ | |
a6dd11e9 | 62 | AliTRDclusterizerV1::AliTRDclusterizerV1(const Text_t *name, const Text_t *title) |
6d50f529 | 63 | :AliTRDclusterizer(name,title) |
64 | ,fDigitsManager(new AliTRDdigitsManager()) | |
f7336fa3 | 65 | { |
66 | // | |
6d50f529 | 67 | // AliTRDclusterizerV1 constructor |
f7336fa3 | 68 | // |
69 | ||
17b26de4 | 70 | fDigitsManager->CreateArrays(); |
f7336fa3 | 71 | |
72 | } | |
73 | ||
8230f242 | 74 | //_____________________________________________________________________________ |
dd9a6ee3 | 75 | AliTRDclusterizerV1::AliTRDclusterizerV1(const AliTRDclusterizerV1 &c) |
6d50f529 | 76 | :AliTRDclusterizer(c) |
77 | ,fDigitsManager(NULL) | |
8230f242 | 78 | { |
79 | // | |
80 | // AliTRDclusterizerV1 copy constructor | |
81 | // | |
82 | ||
8230f242 | 83 | } |
84 | ||
f7336fa3 | 85 | //_____________________________________________________________________________ |
86 | AliTRDclusterizerV1::~AliTRDclusterizerV1() | |
87 | { | |
8230f242 | 88 | // |
89 | // AliTRDclusterizerV1 destructor | |
90 | // | |
f7336fa3 | 91 | |
6f1e466d | 92 | if (fDigitsManager) { |
93 | delete fDigitsManager; | |
abaf1f1d | 94 | fDigitsManager = NULL; |
f7336fa3 | 95 | } |
96 | ||
97 | } | |
98 | ||
dd9a6ee3 | 99 | //_____________________________________________________________________________ |
100 | AliTRDclusterizerV1 &AliTRDclusterizerV1::operator=(const AliTRDclusterizerV1 &c) | |
101 | { | |
102 | // | |
103 | // Assignment operator | |
104 | // | |
105 | ||
106 | if (this != &c) ((AliTRDclusterizerV1 &) c).Copy(*this); | |
107 | return *this; | |
108 | ||
109 | } | |
110 | ||
8230f242 | 111 | //_____________________________________________________________________________ |
e0d47c25 | 112 | void AliTRDclusterizerV1::Copy(TObject &c) const |
8230f242 | 113 | { |
114 | // | |
115 | // Copy function | |
116 | // | |
117 | ||
17b26de4 | 118 | ((AliTRDclusterizerV1 &) c).fDigitsManager = 0; |
8230f242 | 119 | |
120 | AliTRDclusterizer::Copy(c); | |
121 | ||
122 | } | |
123 | ||
f7336fa3 | 124 | //_____________________________________________________________________________ |
125 | Bool_t AliTRDclusterizerV1::ReadDigits() | |
126 | { | |
127 | // | |
128 | // Reads the digits arrays from the input aliroot file | |
129 | // | |
130 | ||
88cb7938 | 131 | if (!fRunLoader) { |
6d50f529 | 132 | AliError("No run loader available"); |
f7336fa3 | 133 | return kFALSE; |
134 | } | |
6d50f529 | 135 | |
88cb7938 | 136 | AliLoader* loader = fRunLoader->GetLoader("TRDLoader"); |
6d50f529 | 137 | if (!loader->TreeD()) { |
138 | loader->LoadDigits(); | |
139 | } | |
abaf1f1d | 140 | |
f7336fa3 | 141 | // Read in the digit arrays |
88cb7938 | 142 | return (fDigitsManager->ReadDigits(loader->TreeD())); |
f7336fa3 | 143 | |
144 | } | |
145 | ||
928e9fae | 146 | //_____________________________________________________________________________ |
a6dd11e9 | 147 | Bool_t AliTRDclusterizerV1::ReadDigits(AliRawReader *rawReader) |
928e9fae | 148 | { |
149 | // | |
150 | // Reads the digits arrays from the ddl file | |
151 | // | |
152 | ||
4ab68796 | 153 | AliTRDrawData raw; |
4ab68796 | 154 | fDigitsManager = raw.Raw2Digits(rawReader); |
928e9fae | 155 | |
156 | return kTRUE; | |
157 | ||
158 | } | |
159 | ||
f7336fa3 | 160 | //_____________________________________________________________________________ |
793ff80c | 161 | Bool_t AliTRDclusterizerV1::MakeClusters() |
f7336fa3 | 162 | { |
163 | // | |
164 | // Generates the cluster. | |
165 | // | |
166 | ||
6d50f529 | 167 | Int_t row = 0; |
168 | Int_t col = 0; | |
169 | Int_t time = 0; | |
170 | Int_t icham = 0; | |
171 | Int_t iplan = 0; | |
172 | Int_t isect = 0; | |
173 | Int_t iPad = 0; | |
174 | ||
175 | AliTRDdataArrayI *digitsIn; | |
a6dd11e9 | 176 | AliTRDdataArrayI *tracksIn; |
f7336fa3 | 177 | |
178 | // Get the geometry | |
6d50f529 | 179 | AliTRDgeometry *geo = AliTRDgeometry::GetGeometry(fRunLoader); |
a6dd11e9 | 180 | |
6d50f529 | 181 | AliTRDcalibDB *calibration = AliTRDcalibDB::Instance(); |
182 | if (!calibration) { | |
183 | AliError("No AliTRDcalibDB instance available\n"); | |
3551db50 | 184 | return kFALSE; |
185 | } | |
186 | ||
6d50f529 | 187 | AliTRDSimParam *simParam = AliTRDSimParam::Instance(); |
188 | if (!simParam) { | |
189 | AliError("No AliTRDSimParam instance available\n"); | |
3becff3c | 190 | return kFALSE; |
191 | } | |
192 | ||
6d50f529 | 193 | AliTRDRecParam *recParam = AliTRDRecParam::Instance(); |
194 | if (!recParam) { | |
195 | AliError("No AliTRDRecParam instance available\n"); | |
3551db50 | 196 | return kFALSE; |
197 | } | |
198 | ||
6d50f529 | 199 | AliTRDCommonParam *commonParam = AliTRDCommonParam::Instance(); |
200 | if (!commonParam) { | |
201 | AliError("Could not get common parameters\n"); | |
3551db50 | 202 | return kFALSE; |
203 | } | |
f7336fa3 | 204 | |
6d50f529 | 205 | // ADC threshols |
a6dd11e9 | 206 | Float_t ADCthreshold = simParam->GetADCthreshold(); |
3e1a3ad8 | 207 | // Threshold value for the maximum |
a6dd11e9 | 208 | Float_t maxThresh = recParam->GetClusMaxThresh(); |
3e1a3ad8 | 209 | // Threshold value for the digit signal |
a6dd11e9 | 210 | Float_t sigThresh = recParam->GetClusSigThresh(); |
6d50f529 | 211 | |
f7336fa3 | 212 | // Iteration limit for unfolding procedure |
8230f242 | 213 | const Float_t kEpsilon = 0.01; |
8230f242 | 214 | const Int_t kNclus = 3; |
215 | const Int_t kNsig = 5; | |
a6dd11e9 | 216 | const Int_t kNdict = AliTRDdigitsManager::kNDict; |
217 | const Int_t kNtrack = kNdict * kNclus; | |
3e1a3ad8 | 218 | |
a5cadd36 | 219 | Int_t iType = 0; |
7ad19338 | 220 | Int_t iUnfold = 0; |
a5cadd36 | 221 | Double_t ratioLeft = 1.0; |
222 | Double_t ratioRight = 1.0; | |
db30bf0f | 223 | |
a6dd11e9 | 224 | Int_t iClusterROC = 0; |
225 | ||
a5cadd36 | 226 | Double_t padSignal[kNsig]; |
227 | Double_t clusterSignal[kNclus]; | |
228 | Double_t clusterPads[kNclus]; | |
f7336fa3 | 229 | |
6d50f529 | 230 | Int_t chamBeg = 0; |
231 | Int_t chamEnd = AliTRDgeometry::Ncham(); | |
232 | Int_t planBeg = 0; | |
233 | Int_t planEnd = AliTRDgeometry::Nplan(); | |
234 | Int_t sectBeg = 0; | |
235 | Int_t sectEnd = AliTRDgeometry::Nsect(); | |
236 | Int_t nTimeTotal = calibration->GetNumberOfTimeBins(); | |
f7336fa3 | 237 | |
a6dd11e9 | 238 | Int_t dummy[9] = { 0, 0, 0, 0, 0, 0, 0, 0, 0 }; |
239 | ||
6d50f529 | 240 | AliDebug(1,Form("Number of Time Bins = %d.\n",nTimeTotal)); |
3becff3c | 241 | |
3e1a3ad8 | 242 | // Start clustering in every chamber |
6d50f529 | 243 | for (icham = chamBeg; icham < chamEnd; icham++) { |
244 | for (iplan = planBeg; iplan < planEnd; iplan++) { | |
245 | for (isect = sectBeg; isect < sectEnd; isect++) { | |
f7336fa3 | 246 | |
a6dd11e9 | 247 | Int_t idet = geo->GetDetector(iplan,icham,isect); |
248 | ||
249 | // Get the digits | |
250 | digitsIn = fDigitsManager->GetDigits(idet); | |
251 | // This is to take care of switched off super modules | |
252 | if (digitsIn->GetNtime() == 0) { | |
253 | continue; | |
254 | } | |
255 | digitsIn->Expand(); | |
256 | AliTRDdataArrayI *tracksTmp = fDigitsManager->GetDictionary(idet,0); | |
257 | tracksTmp->Expand(); | |
258 | ||
3becff3c | 259 | Int_t nRowMax = commonParam->GetRowMax(iplan,icham,isect); |
260 | Int_t nColMax = commonParam->GetColMax(iplan); | |
f7336fa3 | 261 | |
6d50f529 | 262 | AliTRDpadPlane *padPlane = commonParam->GetPadPlane(iplan,icham); |
263 | ||
db30bf0f | 264 | Int_t nClusters = 0; |
265 | Int_t nClusters2pad = 0; | |
266 | Int_t nClusters3pad = 0; | |
267 | Int_t nClusters4pad = 0; | |
268 | Int_t nClusters5pad = 0; | |
269 | Int_t nClustersLarge = 0; | |
3e1a3ad8 | 270 | |
a6dd11e9 | 271 | // Apply the gain and the tail cancelation via digital filter |
6d50f529 | 272 | AliTRDdataArrayF *digitsOut = new AliTRDdataArrayF(digitsIn->GetNrow() |
273 | ,digitsIn->GetNcol() | |
274 | ,digitsIn->GetNtime()); | |
a6dd11e9 | 275 | Transform(digitsIn,digitsOut,idet,nRowMax,nColMax,nTimeTotal,ADCthreshold); |
276 | ||
277 | // Input digits are not needed any more | |
278 | digitsIn->Compress(1,0); | |
6d50f529 | 279 | |
3e1a3ad8 | 280 | // Loop through the chamber and find the maxima |
281 | for ( row = 0; row < nRowMax; row++) { | |
de4b10e5 | 282 | for ( col = 2; col < nColMax; col++) { |
3e1a3ad8 | 283 | for (time = 0; time < nTimeTotal; time++) { |
284 | ||
11dc3a9e | 285 | Float_t signalL = TMath::Abs(digitsOut->GetDataUnchecked(row,col ,time)); |
286 | Float_t signalM = TMath::Abs(digitsOut->GetDataUnchecked(row,col-1,time)); | |
287 | Float_t signalR = TMath::Abs(digitsOut->GetDataUnchecked(row,col-2,time)); | |
3e1a3ad8 | 288 | |
289 | // Look for the maximum | |
db30bf0f | 290 | if (signalM >= maxThresh) { |
6d50f529 | 291 | if ((TMath::Abs(signalL) <= signalM) && |
a6dd11e9 | 292 | (TMath::Abs(signalR) <= signalM)) { |
6493a90f | 293 | if ((TMath::Abs(signalL) >= sigThresh) || |
294 | (TMath::Abs(signalR) >= sigThresh)) { | |
a6dd11e9 | 295 | // Maximum found, mark the position by a negative signal |
296 | digitsOut->SetDataUnchecked(row,col-1,time,-signalM); | |
297 | } | |
3e1a3ad8 | 298 | } |
299 | } | |
6d50f529 | 300 | |
301 | } | |
302 | } | |
303 | } | |
a6dd11e9 | 304 | tracksTmp->Compress(1,0); |
305 | ||
306 | // The index to the first cluster of a given ROC | |
307 | Int_t firstClusterROC = -1; | |
308 | // The number of cluster in a given ROC | |
309 | Int_t nClusterROC = 0; | |
3e1a3ad8 | 310 | |
311 | // Now check the maxima and calculate the cluster position | |
312 | for ( row = 0; row < nRowMax ; row++) { | |
db30bf0f | 313 | for (time = 0; time < nTimeTotal; time++) { |
314 | for ( col = 1; col < nColMax-1; col++) { | |
3e1a3ad8 | 315 | |
316 | // Maximum found ? | |
a6dd11e9 | 317 | if (digitsOut->GetDataUnchecked(row,col,time) < 0.0) { |
f7336fa3 | 318 | |
8230f242 | 319 | for (iPad = 0; iPad < kNclus; iPad++) { |
3e1a3ad8 | 320 | Int_t iPadCol = col - 1 + iPad; |
a6dd11e9 | 321 | clusterSignal[iPad] = |
322 | TMath::Abs(digitsOut->GetDataUnchecked(row,iPadCol,time)); | |
f7336fa3 | 323 | } |
324 | ||
db30bf0f | 325 | // Count the number of pads in the cluster |
326 | Int_t nPadCount = 0; | |
a6dd11e9 | 327 | Int_t ii; |
328 | // Look to the left | |
329 | ii = 0; | |
6d50f529 | 330 | while (TMath::Abs(digitsOut->GetDataUnchecked(row,col-ii ,time)) >= sigThresh) { |
db30bf0f | 331 | nPadCount++; |
332 | ii++; | |
333 | if (col-ii < 0) break; | |
334 | } | |
a6dd11e9 | 335 | // Look to the right |
db30bf0f | 336 | ii = 0; |
6d50f529 | 337 | while (TMath::Abs(digitsOut->GetDataUnchecked(row,col+ii+1,time)) >= sigThresh) { |
db30bf0f | 338 | nPadCount++; |
339 | ii++; | |
340 | if (col+ii+1 >= nColMax) break; | |
341 | } | |
db30bf0f | 342 | nClusters++; |
343 | switch (nPadCount) { | |
344 | case 2: | |
345 | iType = 0; | |
346 | nClusters2pad++; | |
347 | break; | |
348 | case 3: | |
349 | iType = 1; | |
350 | nClusters3pad++; | |
351 | break; | |
352 | case 4: | |
353 | iType = 2; | |
354 | nClusters4pad++; | |
355 | break; | |
356 | case 5: | |
357 | iType = 3; | |
358 | nClusters5pad++; | |
359 | break; | |
360 | default: | |
361 | iType = 4; | |
362 | nClustersLarge++; | |
363 | break; | |
364 | }; | |
365 | ||
6d50f529 | 366 | // Look for 5 pad cluster with minimum in the middle |
db30bf0f | 367 | Bool_t fivePadCluster = kFALSE; |
6d50f529 | 368 | if (col < (nColMax - 3)) { |
3becff3c | 369 | if (digitsOut->GetDataUnchecked(row,col+2,time) < 0) { |
db30bf0f | 370 | fivePadCluster = kTRUE; |
371 | } | |
6d50f529 | 372 | if ((fivePadCluster) && (col < (nColMax - 5))) { |
3becff3c | 373 | if (digitsOut->GetDataUnchecked(row,col+4,time) >= sigThresh) { |
db30bf0f | 374 | fivePadCluster = kFALSE; |
375 | } | |
376 | } | |
6d50f529 | 377 | if ((fivePadCluster) && (col > 1)) { |
3becff3c | 378 | if (digitsOut->GetDataUnchecked(row,col-2,time) >= sigThresh) { |
db30bf0f | 379 | fivePadCluster = kFALSE; |
380 | } | |
381 | } | |
382 | } | |
383 | ||
384 | // 5 pad cluster | |
385 | // Modify the signal of the overlapping pad for the left part | |
386 | // of the cluster which remains from a previous unfolding | |
387 | if (iUnfold) { | |
388 | clusterSignal[0] *= ratioLeft; | |
7ad19338 | 389 | iType = 5; |
db30bf0f | 390 | iUnfold = 0; |
391 | } | |
392 | ||
393 | // Unfold the 5 pad cluster | |
394 | if (fivePadCluster) { | |
395 | for (iPad = 0; iPad < kNsig; iPad++) { | |
3becff3c | 396 | padSignal[iPad] = TMath::Abs(digitsOut->GetDataUnchecked(row |
a6dd11e9 | 397 | ,col-1+iPad |
398 | ,time)); | |
f7336fa3 | 399 | } |
db30bf0f | 400 | // Unfold the two maxima and set the signal on |
401 | // the overlapping pad to the ratio | |
17b26de4 | 402 | ratioRight = Unfold(kEpsilon,iplan,padSignal); |
db30bf0f | 403 | ratioLeft = 1.0 - ratioRight; |
404 | clusterSignal[2] *= ratioRight; | |
7ad19338 | 405 | iType = 5; |
db30bf0f | 406 | iUnfold = 1; |
f7336fa3 | 407 | } |
f7336fa3 | 408 | |
a5cadd36 | 409 | Double_t clusterCharge = clusterSignal[0] |
410 | + clusterSignal[1] | |
411 | + clusterSignal[2]; | |
3e1a3ad8 | 412 | |
db30bf0f | 413 | // The position of the cluster |
a6dd11e9 | 414 | clusterPads[0] = row + 0.5; |
3e1a3ad8 | 415 | // Take the shift of the additional time bins into account |
dde59437 | 416 | clusterPads[2] = time + 0.5; |
3e1a3ad8 | 417 | |
3551db50 | 418 | if (recParam->LUTOn()) { |
db30bf0f | 419 | // Calculate the position of the cluster by using the |
420 | // lookup table method | |
3becff3c | 421 | clusterPads[1] = recParam->LUTposition(iplan,clusterSignal[0] |
6d50f529 | 422 | ,clusterSignal[1] |
423 | ,clusterSignal[2]); | |
db30bf0f | 424 | } |
425 | else { | |
db30bf0f | 426 | // Calculate the position of the cluster by using the |
427 | // center of gravity method | |
a6dd11e9 | 428 | for (Int_t i = 0; i < kNsig; i++) { |
429 | padSignal[i] = 0.0; | |
6d50f529 | 430 | } |
a6dd11e9 | 431 | padSignal[2] = TMath::Abs(digitsOut->GetDataUnchecked(row,col ,time)); // Central pad |
432 | padSignal[1] = TMath::Abs(digitsOut->GetDataUnchecked(row,col-1,time)); // Left pad | |
433 | padSignal[3] = TMath::Abs(digitsOut->GetDataUnchecked(row,col+1,time)); // Right pad | |
6d50f529 | 434 | if ((col > 2) && |
435 | (TMath::Abs(digitsOut->GetDataUnchecked(row,col-2,time)) < padSignal[1])) { | |
3becff3c | 436 | padSignal[0] = TMath::Abs(digitsOut->GetDataUnchecked(row,col-2,time)); |
7ad19338 | 437 | } |
6d50f529 | 438 | if ((col < nColMax - 3) && |
439 | (TMath::Abs(digitsOut->GetDataUnchecked(row,col+2,time)) < padSignal[3])) { | |
3becff3c | 440 | padSignal[4] = TMath::Abs(digitsOut->GetDataUnchecked(row,col+2,time)); |
7ad19338 | 441 | } |
6d50f529 | 442 | clusterPads[1] = GetCOG(padSignal); |
db30bf0f | 443 | } |
444 | ||
a5cadd36 | 445 | Double_t q0 = clusterSignal[0]; |
446 | Double_t q1 = clusterSignal[1]; | |
447 | Double_t q2 = clusterSignal[2]; | |
a6dd11e9 | 448 | Double_t clusterSigmaY2 = (q1 * (q0 + q2) + 4.0 * q0 * q2) |
449 | / (clusterCharge*clusterCharge); | |
a819a5f7 | 450 | |
6d50f529 | 451 | // |
3551db50 | 452 | // Calculate the position and the error |
6d50f529 | 453 | // |
454 | ||
455 | // Correct for t0 | |
a6dd11e9 | 456 | Int_t clusterTimeBin = TMath::Nint(time - calibration->GetT0(idet,col,row)); |
6d50f529 | 457 | Double_t colSize = padPlane->GetColSize(col); |
458 | Double_t rowSize = padPlane->GetRowSize(row); | |
cb86ff6e | 459 | |
a5cadd36 | 460 | Double_t clusterPos[3]; |
a6dd11e9 | 461 | clusterPos[0] = padPlane->GetColPos(col) - (clusterPads[1] + 0.5) * colSize; |
462 | clusterPos[1] = padPlane->GetRowPos(row) - 0.5 * rowSize; | |
6d50f529 | 463 | clusterPos[2] = CalcXposFromTimebin(clusterPads[2],idet,col,row); |
a5cadd36 | 464 | Double_t clusterSig[2]; |
a6dd11e9 | 465 | clusterSig[0] = (clusterSigmaY2 + 1.0/12.0) * colSize*colSize; |
466 | clusterSig[1] = rowSize * rowSize / 12.0; | |
3551db50 | 467 | |
a6dd11e9 | 468 | // Add the cluster to the output array |
469 | // The track indices will be stored later | |
470 | AliTRDcluster *cluster = AddCluster(clusterPos | |
471 | ,clusterTimeBin | |
472 | ,idet | |
473 | ,clusterCharge | |
474 | ,dummy | |
475 | ,clusterSig | |
476 | ,iType | |
477 | ,clusterPads[1]); | |
478 | ||
479 | // Store the amplitudes of the pads in the cluster for later analysis | |
480 | Short_t signals[7] = { 0, 0, 0, 0, 0, 0, 0 }; | |
6d50f529 | 481 | for (Int_t jPad = col-3; jPad <= col+3; jPad++) { |
a6dd11e9 | 482 | if ((jPad < 0) || |
483 | (jPad >= nColMax-1)) { | |
6d50f529 | 484 | continue; |
485 | } | |
11dc3a9e | 486 | signals[jPad-col+3] = TMath::Nint(TMath::Abs(digitsOut->GetDataUnchecked(row,jPad,time))); |
c85a4951 | 487 | } |
488 | cluster->SetSignals(signals); | |
6d50f529 | 489 | |
a6dd11e9 | 490 | // Temporarily store the row, column and time bin of the center pad |
491 | // Used to later on assign the track indices | |
492 | cluster->SetLabel( row,0); | |
493 | cluster->SetLabel( col,1); | |
494 | cluster->SetLabel(time,2); | |
6d50f529 | 495 | |
a6dd11e9 | 496 | // Store the index of the first cluster in the current ROC |
497 | if (firstClusterROC < 0) { | |
498 | firstClusterROC = RecPoints()->GetEntriesFast() - 1; | |
499 | } | |
500 | // Count the number of cluster in the current ROC | |
501 | nClusterROC++; | |
502 | ||
503 | } // if: Maximum found ? | |
504 | ||
505 | } // loop: pad columns | |
506 | } // loop: time bins | |
507 | } // loop: pad rows | |
11dc3a9e | 508 | |
509 | delete digitsOut; | |
f7336fa3 | 510 | |
a6dd11e9 | 511 | // |
512 | // Add the track indices to the found clusters | |
513 | // | |
514 | ||
515 | // Temporary array to collect the track indices | |
516 | Int_t *idxTracks = new Int_t[kNtrack*nClusterROC]; | |
517 | ||
518 | // Loop through the dictionary arrays one-by-one | |
519 | // to keep memory consumption low | |
520 | for (Int_t iDict = 0; iDict < kNdict; iDict++) { | |
521 | ||
522 | tracksIn = fDigitsManager->GetDictionary(idet,iDict); | |
523 | tracksIn->Expand(); | |
524 | ||
525 | // Loop though the clusters found in this ROC | |
526 | for (iClusterROC = 0; iClusterROC < nClusterROC; iClusterROC++) { | |
527 | ||
528 | AliTRDcluster *cluster = (AliTRDcluster *) | |
529 | RecPoints()->UncheckedAt(firstClusterROC+iClusterROC); | |
530 | row = cluster->GetLabel(0); | |
531 | col = cluster->GetLabel(1); | |
532 | time = cluster->GetLabel(2); | |
533 | ||
534 | for (iPad = 0; iPad < kNclus; iPad++) { | |
535 | Int_t iPadCol = col - 1 + iPad; | |
536 | Int_t index = tracksIn->GetDataUnchecked(row,iPadCol,time) - 1; | |
537 | idxTracks[3*iPad+iDict + iClusterROC*kNtrack] = index; | |
538 | } | |
539 | ||
540 | } | |
541 | ||
542 | // Compress the arrays | |
543 | tracksIn->Compress(1,0); | |
544 | ||
545 | } | |
546 | ||
547 | // Copy the track indices into the cluster | |
548 | // Loop though the clusters found in this ROC | |
549 | for (iClusterROC = 0; iClusterROC < nClusterROC; iClusterROC++) { | |
550 | ||
551 | AliTRDcluster *cluster = (AliTRDcluster *) | |
552 | RecPoints()->UncheckedAt(firstClusterROC+iClusterROC); | |
553 | cluster->SetLabel(-9999,0); | |
554 | cluster->SetLabel(-9999,1); | |
555 | cluster->SetLabel(-9999,2); | |
556 | ||
557 | cluster->AddTrackIndex(&idxTracks[iClusterROC*kNtrack]); | |
558 | ||
559 | } | |
560 | ||
561 | delete [] idxTracks; | |
f7336fa3 | 562 | |
3e1a3ad8 | 563 | // Write the cluster and reset the array |
793ff80c | 564 | WriteClusters(idet); |
bdbb05bb | 565 | ResetRecPoints(); |
6d50f529 | 566 | |
a6dd11e9 | 567 | } // loop: Sectors |
568 | } // loop: Planes | |
569 | } // loop: Chambers | |
f7336fa3 | 570 | |
f7336fa3 | 571 | return kTRUE; |
572 | ||
573 | } | |
574 | ||
a305677e | 575 | //_____________________________________________________________________________ |
7ad19338 | 576 | Double_t AliTRDclusterizerV1::GetCOG(Double_t signal[5]) |
577 | { | |
578 | // | |
6d50f529 | 579 | // Get COG position |
580 | // Used for clusters with more than 3 pads - where LUT not applicable | |
581 | // | |
582 | ||
a6dd11e9 | 583 | Double_t sum = signal[0] |
584 | + signal[1] | |
585 | + signal[2] | |
586 | + signal[3] | |
587 | + signal[4]; | |
588 | ||
589 | Double_t res = (0.0 * (-signal[0] + signal[4]) | |
590 | + (-signal[1] + signal[3])) / sum; | |
6d50f529 | 591 | |
7ad19338 | 592 | return res; |
6d50f529 | 593 | |
7ad19338 | 594 | } |
595 | ||
f7336fa3 | 596 | //_____________________________________________________________________________ |
a6dd11e9 | 597 | Double_t AliTRDclusterizerV1::Unfold(Double_t eps, Int_t plane, Double_t *padSignal) |
f7336fa3 | 598 | { |
599 | // | |
600 | // Method to unfold neighbouring maxima. | |
601 | // The charge ratio on the overlapping pad is calculated | |
602 | // until there is no more change within the range given by eps. | |
603 | // The resulting ratio is then returned to the calling method. | |
604 | // | |
605 | ||
a6dd11e9 | 606 | AliTRDcalibDB *calibration = AliTRDcalibDB::Instance(); |
6d50f529 | 607 | if (!calibration) { |
608 | AliError("No AliTRDcalibDB instance available\n"); | |
6a739e92 | 609 | return kFALSE; |
3551db50 | 610 | } |
6a739e92 | 611 | |
a5cadd36 | 612 | Int_t irc = 0; |
a6dd11e9 | 613 | Int_t itStep = 0; // Count iteration steps |
f7336fa3 | 614 | |
a6dd11e9 | 615 | Double_t ratio = 0.5; // Start value for ratio |
616 | Double_t prevRatio = 0.0; // Store previous ratio | |
f7336fa3 | 617 | |
a6dd11e9 | 618 | Double_t newLeftSignal[3] = { 0.0, 0.0, 0.0 }; // Array to store left cluster signal |
619 | Double_t newRightSignal[3] = { 0.0, 0.0, 0.0 }; // Array to store right cluster signal | |
620 | Double_t newSignal[3] = { 0.0, 0.0, 0.0 }; | |
f7336fa3 | 621 | |
3e1a3ad8 | 622 | // Start the iteration |
f7336fa3 | 623 | while ((TMath::Abs(prevRatio - ratio) > eps) && (itStep < 10)) { |
624 | ||
625 | itStep++; | |
626 | prevRatio = ratio; | |
627 | ||
3e1a3ad8 | 628 | // Cluster position according to charge ratio |
a5cadd36 | 629 | Double_t maxLeft = (ratio*padSignal[2] - padSignal[0]) |
630 | / (padSignal[0] + padSignal[1] + ratio*padSignal[2]); | |
631 | Double_t maxRight = (padSignal[4] - (1-ratio)*padSignal[2]) | |
a6dd11e9 | 632 | / ((1.0 - ratio)*padSignal[2] + padSignal[3] + padSignal[4]); |
f7336fa3 | 633 | |
3e1a3ad8 | 634 | // Set cluster charge ratio |
6a739e92 | 635 | irc = calibration->PadResponse(1.0,maxLeft ,plane,newSignal); |
a5cadd36 | 636 | Double_t ampLeft = padSignal[1] / newSignal[1]; |
6a739e92 | 637 | irc = calibration->PadResponse(1.0,maxRight,plane,newSignal); |
a5cadd36 | 638 | Double_t ampRight = padSignal[3] / newSignal[1]; |
f7336fa3 | 639 | |
3e1a3ad8 | 640 | // Apply pad response to parameters |
6a739e92 | 641 | irc = calibration->PadResponse(ampLeft ,maxLeft ,plane,newLeftSignal ); |
642 | irc = calibration->PadResponse(ampRight,maxRight,plane,newRightSignal); | |
f7336fa3 | 643 | |
3e1a3ad8 | 644 | // Calculate new overlapping ratio |
a5cadd36 | 645 | ratio = TMath::Min((Double_t)1.0,newLeftSignal[2] / |
a6dd11e9 | 646 | (newLeftSignal[2] + newRightSignal[0])); |
f7336fa3 | 647 | |
648 | } | |
649 | ||
650 | return ratio; | |
651 | ||
652 | } | |
653 | ||
3becff3c | 654 | //_____________________________________________________________________________ |
a6dd11e9 | 655 | void AliTRDclusterizerV1::Transform(AliTRDdataArrayI *digitsIn |
656 | , AliTRDdataArrayF *digitsOut | |
657 | , Int_t idet, Int_t nRowMax | |
658 | , Int_t nColMax, Int_t nTimeTotal | |
659 | , Float_t ADCthreshold) | |
3becff3c | 660 | { |
3becff3c | 661 | // |
cb86ff6e | 662 | // Apply gain factor |
a6dd11e9 | 663 | // Apply tail cancelation: Transform digitsIn to digitsOut |
3becff3c | 664 | // |
665 | ||
6d50f529 | 666 | Int_t iRow = 0; |
667 | Int_t iCol = 0; | |
668 | Int_t iTime = 0; | |
3becff3c | 669 | |
a6dd11e9 | 670 | AliTRDRecParam *recParam = AliTRDRecParam::Instance(); |
6d50f529 | 671 | if (!recParam) { |
672 | AliError("No AliTRDRecParam instance available\n"); | |
3becff3c | 673 | return; |
674 | } | |
a6dd11e9 | 675 | AliTRDcalibDB *calibration = AliTRDcalibDB::Instance(); |
6d50f529 | 676 | if (!calibration) { |
677 | AliError("No AliTRDcalibDB instance available\n"); | |
678 | return; | |
679 | } | |
11dc3a9e | 680 | |
a6dd11e9 | 681 | Double_t *inADC = new Double_t[nTimeTotal]; // ADC data before tail cancellation |
682 | Double_t *outADC = new Double_t[nTimeTotal]; // ADC data after tail cancellation | |
3becff3c | 683 | |
6d50f529 | 684 | AliDebug(1,Form("Tail cancellation (nExp = %d) for detector %d.\n" |
685 | ,recParam->GetTCnexp(),idet)); | |
686 | ||
687 | for (iRow = 0; iRow < nRowMax; iRow++ ) { | |
688 | for (iCol = 0; iCol < nColMax; iCol++ ) { | |
a6dd11e9 | 689 | |
6d50f529 | 690 | for (iTime = 0; iTime < nTimeTotal; iTime++) { |
3becff3c | 691 | |
cb86ff6e | 692 | // |
6d50f529 | 693 | // Add gain |
cb86ff6e | 694 | // |
6d50f529 | 695 | Double_t gain = calibration->GetGainFactor(idet,iCol,iRow); |
a6dd11e9 | 696 | if (gain == 0.0) { |
cb86ff6e | 697 | AliError("Not a valid gain\n"); |
698 | } | |
a6dd11e9 | 699 | inADC[iTime] = digitsIn->GetDataUnchecked(iRow,iCol,iTime); |
700 | inADC[iTime] /= gain; | |
701 | outADC[iTime] = inADC[iTime]; | |
6d50f529 | 702 | |
3becff3c | 703 | } |
704 | ||
705 | // Apply the tail cancelation via the digital filter | |
6d50f529 | 706 | if (recParam->TCOn()) { |
a305677e | 707 | DeConvExp(inADC,outADC,nTimeTotal,recParam->GetTCnexp()); |
3becff3c | 708 | } |
709 | ||
6d50f529 | 710 | for (iTime = 0; iTime < nTimeTotal; iTime++) { |
711 | ||
3becff3c | 712 | // Store the amplitude of the digit if above threshold |
a305677e | 713 | if (outADC[iTime] > ADCthreshold) { |
11dc3a9e | 714 | digitsOut->SetDataUnchecked(iRow,iCol,iTime,outADC[iTime]); |
3becff3c | 715 | } |
716 | ||
717 | } | |
718 | ||
719 | } | |
3becff3c | 720 | } |
721 | ||
722 | delete [] inADC; | |
723 | delete [] outADC; | |
724 | ||
725 | return; | |
726 | ||
727 | } | |
728 | ||
3becff3c | 729 | //_____________________________________________________________________________ |
a6dd11e9 | 730 | void AliTRDclusterizerV1::DeConvExp(Double_t *source, Double_t *target |
731 | , Int_t n, Int_t nexp) | |
3becff3c | 732 | { |
733 | // | |
6d50f529 | 734 | // Tail cancellation by deconvolution for PASA v4 TRF |
3becff3c | 735 | // |
736 | ||
737 | Double_t rates[2]; | |
738 | Double_t coefficients[2]; | |
739 | ||
6d50f529 | 740 | // Initialization (coefficient = alpha, rates = lambda) |
3becff3c | 741 | Double_t R1 = 1.0; |
742 | Double_t R2 = 1.0; | |
743 | Double_t C1 = 0.5; | |
744 | Double_t C2 = 0.5; | |
745 | ||
746 | if (nexp == 1) { // 1 Exponentials | |
747 | R1 = 1.156; | |
748 | R2 = 0.130; | |
749 | C1 = 0.066; | |
750 | C2 = 0.000; | |
751 | } | |
752 | if (nexp == 2) { // 2 Exponentials | |
753 | R1 = 1.156; | |
754 | R2 = 0.130; | |
755 | C1 = 0.114; | |
756 | C2 = 0.624; | |
757 | } | |
758 | ||
759 | coefficients[0] = C1; | |
760 | coefficients[1] = C2; | |
761 | ||
a6dd11e9 | 762 | Double_t Dt = 0.1; |
3becff3c | 763 | |
764 | rates[0] = TMath::Exp(-Dt/(R1)); | |
765 | rates[1] = TMath::Exp(-Dt/(R2)); | |
766 | ||
6d50f529 | 767 | Int_t i = 0; |
768 | Int_t k = 0; | |
3becff3c | 769 | |
6d50f529 | 770 | Double_t reminder[2]; |
771 | Double_t correction; | |
772 | Double_t result; | |
3becff3c | 773 | |
6d50f529 | 774 | // Attention: computation order is important |
775 | correction = 0.0; | |
776 | for (k = 0; k < nexp; k++) { | |
777 | reminder[k] = 0.0; | |
778 | } | |
779 | for (i = 0; i < n; i++) { | |
a6dd11e9 | 780 | result = (source[i] - correction); // No rescaling |
3becff3c | 781 | target[i] = result; |
782 | ||
6d50f529 | 783 | for (k = 0; k < nexp; k++) { |
784 | reminder[k] = rates[k] * (reminder[k] + coefficients[k] * result); | |
785 | } | |
786 | correction = 0.0; | |
787 | for (k = 0; k < nexp; k++) { | |
788 | correction += reminder[k]; | |
789 | } | |
3becff3c | 790 | } |
791 | ||
792 | } |