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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 | ||
259 | AliDebug(1,Form("Analyzing chamber %d, plane %d, sector %d.\n" | |
260 | ,icham,iplan,isect)); | |
3becff3c | 261 | |
262 | Int_t nRowMax = commonParam->GetRowMax(iplan,icham,isect); | |
263 | Int_t nColMax = commonParam->GetColMax(iplan); | |
f7336fa3 | 264 | |
6d50f529 | 265 | AliTRDpadPlane *padPlane = commonParam->GetPadPlane(iplan,icham); |
266 | ||
db30bf0f | 267 | Int_t nClusters = 0; |
268 | Int_t nClusters2pad = 0; | |
269 | Int_t nClusters3pad = 0; | |
270 | Int_t nClusters4pad = 0; | |
271 | Int_t nClusters5pad = 0; | |
272 | Int_t nClustersLarge = 0; | |
3e1a3ad8 | 273 | |
a6dd11e9 | 274 | // Apply the gain and the tail cancelation via digital filter |
6d50f529 | 275 | AliTRDdataArrayF *digitsOut = new AliTRDdataArrayF(digitsIn->GetNrow() |
276 | ,digitsIn->GetNcol() | |
277 | ,digitsIn->GetNtime()); | |
a6dd11e9 | 278 | Transform(digitsIn,digitsOut,idet,nRowMax,nColMax,nTimeTotal,ADCthreshold); |
279 | ||
280 | // Input digits are not needed any more | |
281 | digitsIn->Compress(1,0); | |
6d50f529 | 282 | |
3e1a3ad8 | 283 | // Loop through the chamber and find the maxima |
284 | for ( row = 0; row < nRowMax; row++) { | |
de4b10e5 | 285 | for ( col = 2; col < nColMax; col++) { |
3e1a3ad8 | 286 | for (time = 0; time < nTimeTotal; time++) { |
287 | ||
11dc3a9e | 288 | Float_t signalL = TMath::Abs(digitsOut->GetDataUnchecked(row,col ,time)); |
289 | Float_t signalM = TMath::Abs(digitsOut->GetDataUnchecked(row,col-1,time)); | |
290 | Float_t signalR = TMath::Abs(digitsOut->GetDataUnchecked(row,col-2,time)); | |
3e1a3ad8 | 291 | |
292 | // Look for the maximum | |
db30bf0f | 293 | if (signalM >= maxThresh) { |
6d50f529 | 294 | if ((TMath::Abs(signalL) <= signalM) && |
a6dd11e9 | 295 | (TMath::Abs(signalR) <= signalM)) { |
296 | if ((TMath::Abs(signalL) + TMath::Abs(signalR)) > sigThresh) { | |
297 | // Maximum found, mark the position by a negative signal | |
298 | digitsOut->SetDataUnchecked(row,col-1,time,-signalM); | |
299 | } | |
3e1a3ad8 | 300 | } |
301 | } | |
6d50f529 | 302 | |
303 | } | |
304 | } | |
305 | } | |
a6dd11e9 | 306 | tracksTmp->Compress(1,0); |
307 | ||
308 | // The index to the first cluster of a given ROC | |
309 | Int_t firstClusterROC = -1; | |
310 | // The number of cluster in a given ROC | |
311 | Int_t nClusterROC = 0; | |
3e1a3ad8 | 312 | |
313 | // Now check the maxima and calculate the cluster position | |
314 | for ( row = 0; row < nRowMax ; row++) { | |
db30bf0f | 315 | for (time = 0; time < nTimeTotal; time++) { |
316 | for ( col = 1; col < nColMax-1; col++) { | |
3e1a3ad8 | 317 | |
318 | // Maximum found ? | |
a6dd11e9 | 319 | if (digitsOut->GetDataUnchecked(row,col,time) < 0.0) { |
f7336fa3 | 320 | |
8230f242 | 321 | for (iPad = 0; iPad < kNclus; iPad++) { |
3e1a3ad8 | 322 | Int_t iPadCol = col - 1 + iPad; |
a6dd11e9 | 323 | clusterSignal[iPad] = |
324 | TMath::Abs(digitsOut->GetDataUnchecked(row,iPadCol,time)); | |
f7336fa3 | 325 | } |
326 | ||
db30bf0f | 327 | // Count the number of pads in the cluster |
328 | Int_t nPadCount = 0; | |
a6dd11e9 | 329 | Int_t ii; |
330 | // Look to the left | |
331 | ii = 0; | |
6d50f529 | 332 | while (TMath::Abs(digitsOut->GetDataUnchecked(row,col-ii ,time)) >= sigThresh) { |
db30bf0f | 333 | nPadCount++; |
334 | ii++; | |
335 | if (col-ii < 0) break; | |
336 | } | |
a6dd11e9 | 337 | // Look to the right |
db30bf0f | 338 | ii = 0; |
6d50f529 | 339 | while (TMath::Abs(digitsOut->GetDataUnchecked(row,col+ii+1,time)) >= sigThresh) { |
db30bf0f | 340 | nPadCount++; |
341 | ii++; | |
342 | if (col+ii+1 >= nColMax) break; | |
343 | } | |
db30bf0f | 344 | nClusters++; |
345 | switch (nPadCount) { | |
346 | case 2: | |
347 | iType = 0; | |
348 | nClusters2pad++; | |
349 | break; | |
350 | case 3: | |
351 | iType = 1; | |
352 | nClusters3pad++; | |
353 | break; | |
354 | case 4: | |
355 | iType = 2; | |
356 | nClusters4pad++; | |
357 | break; | |
358 | case 5: | |
359 | iType = 3; | |
360 | nClusters5pad++; | |
361 | break; | |
362 | default: | |
363 | iType = 4; | |
364 | nClustersLarge++; | |
365 | break; | |
366 | }; | |
367 | ||
6d50f529 | 368 | // Look for 5 pad cluster with minimum in the middle |
db30bf0f | 369 | Bool_t fivePadCluster = kFALSE; |
6d50f529 | 370 | if (col < (nColMax - 3)) { |
3becff3c | 371 | if (digitsOut->GetDataUnchecked(row,col+2,time) < 0) { |
db30bf0f | 372 | fivePadCluster = kTRUE; |
373 | } | |
6d50f529 | 374 | if ((fivePadCluster) && (col < (nColMax - 5))) { |
3becff3c | 375 | if (digitsOut->GetDataUnchecked(row,col+4,time) >= sigThresh) { |
db30bf0f | 376 | fivePadCluster = kFALSE; |
377 | } | |
378 | } | |
6d50f529 | 379 | if ((fivePadCluster) && (col > 1)) { |
3becff3c | 380 | if (digitsOut->GetDataUnchecked(row,col-2,time) >= sigThresh) { |
db30bf0f | 381 | fivePadCluster = kFALSE; |
382 | } | |
383 | } | |
384 | } | |
385 | ||
386 | // 5 pad cluster | |
387 | // Modify the signal of the overlapping pad for the left part | |
388 | // of the cluster which remains from a previous unfolding | |
389 | if (iUnfold) { | |
390 | clusterSignal[0] *= ratioLeft; | |
7ad19338 | 391 | iType = 5; |
db30bf0f | 392 | iUnfold = 0; |
393 | } | |
394 | ||
395 | // Unfold the 5 pad cluster | |
396 | if (fivePadCluster) { | |
397 | for (iPad = 0; iPad < kNsig; iPad++) { | |
3becff3c | 398 | padSignal[iPad] = TMath::Abs(digitsOut->GetDataUnchecked(row |
a6dd11e9 | 399 | ,col-1+iPad |
400 | ,time)); | |
f7336fa3 | 401 | } |
db30bf0f | 402 | // Unfold the two maxima and set the signal on |
403 | // the overlapping pad to the ratio | |
17b26de4 | 404 | ratioRight = Unfold(kEpsilon,iplan,padSignal); |
db30bf0f | 405 | ratioLeft = 1.0 - ratioRight; |
406 | clusterSignal[2] *= ratioRight; | |
7ad19338 | 407 | iType = 5; |
db30bf0f | 408 | iUnfold = 1; |
f7336fa3 | 409 | } |
f7336fa3 | 410 | |
a5cadd36 | 411 | Double_t clusterCharge = clusterSignal[0] |
412 | + clusterSignal[1] | |
413 | + clusterSignal[2]; | |
3e1a3ad8 | 414 | |
db30bf0f | 415 | // The position of the cluster |
a6dd11e9 | 416 | clusterPads[0] = row + 0.5; |
3e1a3ad8 | 417 | // Take the shift of the additional time bins into account |
dde59437 | 418 | clusterPads[2] = time + 0.5; |
3e1a3ad8 | 419 | |
3551db50 | 420 | if (recParam->LUTOn()) { |
db30bf0f | 421 | // Calculate the position of the cluster by using the |
422 | // lookup table method | |
3becff3c | 423 | clusterPads[1] = recParam->LUTposition(iplan,clusterSignal[0] |
6d50f529 | 424 | ,clusterSignal[1] |
425 | ,clusterSignal[2]); | |
db30bf0f | 426 | } |
427 | else { | |
db30bf0f | 428 | // Calculate the position of the cluster by using the |
429 | // center of gravity method | |
a6dd11e9 | 430 | for (Int_t i = 0; i < kNsig; i++) { |
431 | padSignal[i] = 0.0; | |
6d50f529 | 432 | } |
a6dd11e9 | 433 | padSignal[2] = TMath::Abs(digitsOut->GetDataUnchecked(row,col ,time)); // Central pad |
434 | padSignal[1] = TMath::Abs(digitsOut->GetDataUnchecked(row,col-1,time)); // Left pad | |
435 | padSignal[3] = TMath::Abs(digitsOut->GetDataUnchecked(row,col+1,time)); // Right pad | |
6d50f529 | 436 | if ((col > 2) && |
437 | (TMath::Abs(digitsOut->GetDataUnchecked(row,col-2,time)) < padSignal[1])) { | |
3becff3c | 438 | padSignal[0] = TMath::Abs(digitsOut->GetDataUnchecked(row,col-2,time)); |
7ad19338 | 439 | } |
6d50f529 | 440 | if ((col < nColMax - 3) && |
441 | (TMath::Abs(digitsOut->GetDataUnchecked(row,col+2,time)) < padSignal[3])) { | |
3becff3c | 442 | padSignal[4] = TMath::Abs(digitsOut->GetDataUnchecked(row,col+2,time)); |
7ad19338 | 443 | } |
6d50f529 | 444 | clusterPads[1] = GetCOG(padSignal); |
db30bf0f | 445 | } |
446 | ||
a5cadd36 | 447 | Double_t q0 = clusterSignal[0]; |
448 | Double_t q1 = clusterSignal[1]; | |
449 | Double_t q2 = clusterSignal[2]; | |
a6dd11e9 | 450 | Double_t clusterSigmaY2 = (q1 * (q0 + q2) + 4.0 * q0 * q2) |
451 | / (clusterCharge*clusterCharge); | |
a819a5f7 | 452 | |
6d50f529 | 453 | // |
3551db50 | 454 | // Calculate the position and the error |
6d50f529 | 455 | // |
456 | ||
457 | // Correct for t0 | |
a6dd11e9 | 458 | Int_t clusterTimeBin = TMath::Nint(time - calibration->GetT0(idet,col,row)); |
6d50f529 | 459 | Double_t colSize = padPlane->GetColSize(col); |
460 | Double_t rowSize = padPlane->GetRowSize(row); | |
cb86ff6e | 461 | |
a5cadd36 | 462 | Double_t clusterPos[3]; |
a6dd11e9 | 463 | clusterPos[0] = padPlane->GetColPos(col) - (clusterPads[1] + 0.5) * colSize; |
464 | clusterPos[1] = padPlane->GetRowPos(row) - 0.5 * rowSize; | |
6d50f529 | 465 | clusterPos[2] = CalcXposFromTimebin(clusterPads[2],idet,col,row); |
a5cadd36 | 466 | Double_t clusterSig[2]; |
a6dd11e9 | 467 | clusterSig[0] = (clusterSigmaY2 + 1.0/12.0) * colSize*colSize; |
468 | clusterSig[1] = rowSize * rowSize / 12.0; | |
3551db50 | 469 | |
a6dd11e9 | 470 | // Add the cluster to the output array |
471 | // The track indices will be stored later | |
472 | AliTRDcluster *cluster = AddCluster(clusterPos | |
473 | ,clusterTimeBin | |
474 | ,idet | |
475 | ,clusterCharge | |
476 | ,dummy | |
477 | ,clusterSig | |
478 | ,iType | |
479 | ,clusterPads[1]); | |
480 | ||
481 | // Store the amplitudes of the pads in the cluster for later analysis | |
482 | Short_t signals[7] = { 0, 0, 0, 0, 0, 0, 0 }; | |
6d50f529 | 483 | for (Int_t jPad = col-3; jPad <= col+3; jPad++) { |
a6dd11e9 | 484 | if ((jPad < 0) || |
485 | (jPad >= nColMax-1)) { | |
6d50f529 | 486 | continue; |
487 | } | |
11dc3a9e | 488 | signals[jPad-col+3] = TMath::Nint(TMath::Abs(digitsOut->GetDataUnchecked(row,jPad,time))); |
c85a4951 | 489 | } |
490 | cluster->SetSignals(signals); | |
6d50f529 | 491 | |
a6dd11e9 | 492 | // Temporarily store the row, column and time bin of the center pad |
493 | // Used to later on assign the track indices | |
494 | cluster->SetLabel( row,0); | |
495 | cluster->SetLabel( col,1); | |
496 | cluster->SetLabel(time,2); | |
6d50f529 | 497 | |
a6dd11e9 | 498 | // Store the index of the first cluster in the current ROC |
499 | if (firstClusterROC < 0) { | |
500 | firstClusterROC = RecPoints()->GetEntriesFast() - 1; | |
501 | } | |
502 | // Count the number of cluster in the current ROC | |
503 | nClusterROC++; | |
504 | ||
505 | } // if: Maximum found ? | |
506 | ||
507 | } // loop: pad columns | |
508 | } // loop: time bins | |
509 | } // loop: pad rows | |
11dc3a9e | 510 | |
511 | delete digitsOut; | |
f7336fa3 | 512 | |
a6dd11e9 | 513 | // |
514 | // Add the track indices to the found clusters | |
515 | // | |
516 | ||
517 | // Temporary array to collect the track indices | |
518 | Int_t *idxTracks = new Int_t[kNtrack*nClusterROC]; | |
519 | ||
520 | // Loop through the dictionary arrays one-by-one | |
521 | // to keep memory consumption low | |
522 | for (Int_t iDict = 0; iDict < kNdict; iDict++) { | |
523 | ||
524 | tracksIn = fDigitsManager->GetDictionary(idet,iDict); | |
525 | tracksIn->Expand(); | |
526 | ||
527 | // Loop though the clusters found in this ROC | |
528 | for (iClusterROC = 0; iClusterROC < nClusterROC; iClusterROC++) { | |
529 | ||
530 | AliTRDcluster *cluster = (AliTRDcluster *) | |
531 | RecPoints()->UncheckedAt(firstClusterROC+iClusterROC); | |
532 | row = cluster->GetLabel(0); | |
533 | col = cluster->GetLabel(1); | |
534 | time = cluster->GetLabel(2); | |
535 | ||
536 | for (iPad = 0; iPad < kNclus; iPad++) { | |
537 | Int_t iPadCol = col - 1 + iPad; | |
538 | Int_t index = tracksIn->GetDataUnchecked(row,iPadCol,time) - 1; | |
539 | idxTracks[3*iPad+iDict + iClusterROC*kNtrack] = index; | |
540 | } | |
541 | ||
542 | } | |
543 | ||
544 | // Compress the arrays | |
545 | tracksIn->Compress(1,0); | |
546 | ||
547 | } | |
548 | ||
549 | // Copy the track indices into the cluster | |
550 | // Loop though the clusters found in this ROC | |
551 | for (iClusterROC = 0; iClusterROC < nClusterROC; iClusterROC++) { | |
552 | ||
553 | AliTRDcluster *cluster = (AliTRDcluster *) | |
554 | RecPoints()->UncheckedAt(firstClusterROC+iClusterROC); | |
555 | cluster->SetLabel(-9999,0); | |
556 | cluster->SetLabel(-9999,1); | |
557 | cluster->SetLabel(-9999,2); | |
558 | ||
559 | cluster->AddTrackIndex(&idxTracks[iClusterROC*kNtrack]); | |
560 | ||
561 | } | |
562 | ||
563 | delete [] idxTracks; | |
f7336fa3 | 564 | |
3e1a3ad8 | 565 | // Write the cluster and reset the array |
793ff80c | 566 | WriteClusters(idet); |
bdbb05bb | 567 | ResetRecPoints(); |
6d50f529 | 568 | |
a6dd11e9 | 569 | } // loop: Sectors |
570 | } // loop: Planes | |
571 | } // loop: Chambers | |
f7336fa3 | 572 | |
f7336fa3 | 573 | return kTRUE; |
574 | ||
575 | } | |
576 | ||
a305677e | 577 | //_____________________________________________________________________________ |
7ad19338 | 578 | Double_t AliTRDclusterizerV1::GetCOG(Double_t signal[5]) |
579 | { | |
580 | // | |
6d50f529 | 581 | // Get COG position |
582 | // Used for clusters with more than 3 pads - where LUT not applicable | |
583 | // | |
584 | ||
a6dd11e9 | 585 | Double_t sum = signal[0] |
586 | + signal[1] | |
587 | + signal[2] | |
588 | + signal[3] | |
589 | + signal[4]; | |
590 | ||
591 | Double_t res = (0.0 * (-signal[0] + signal[4]) | |
592 | + (-signal[1] + signal[3])) / sum; | |
6d50f529 | 593 | |
7ad19338 | 594 | return res; |
6d50f529 | 595 | |
7ad19338 | 596 | } |
597 | ||
f7336fa3 | 598 | //_____________________________________________________________________________ |
a6dd11e9 | 599 | Double_t AliTRDclusterizerV1::Unfold(Double_t eps, Int_t plane, Double_t *padSignal) |
f7336fa3 | 600 | { |
601 | // | |
602 | // Method to unfold neighbouring maxima. | |
603 | // The charge ratio on the overlapping pad is calculated | |
604 | // until there is no more change within the range given by eps. | |
605 | // The resulting ratio is then returned to the calling method. | |
606 | // | |
607 | ||
a6dd11e9 | 608 | AliTRDcalibDB *calibration = AliTRDcalibDB::Instance(); |
6d50f529 | 609 | if (!calibration) { |
610 | AliError("No AliTRDcalibDB instance available\n"); | |
6a739e92 | 611 | return kFALSE; |
3551db50 | 612 | } |
6a739e92 | 613 | |
a5cadd36 | 614 | Int_t irc = 0; |
a6dd11e9 | 615 | Int_t itStep = 0; // Count iteration steps |
f7336fa3 | 616 | |
a6dd11e9 | 617 | Double_t ratio = 0.5; // Start value for ratio |
618 | Double_t prevRatio = 0.0; // Store previous ratio | |
f7336fa3 | 619 | |
a6dd11e9 | 620 | Double_t newLeftSignal[3] = { 0.0, 0.0, 0.0 }; // Array to store left cluster signal |
621 | Double_t newRightSignal[3] = { 0.0, 0.0, 0.0 }; // Array to store right cluster signal | |
622 | Double_t newSignal[3] = { 0.0, 0.0, 0.0 }; | |
f7336fa3 | 623 | |
3e1a3ad8 | 624 | // Start the iteration |
f7336fa3 | 625 | while ((TMath::Abs(prevRatio - ratio) > eps) && (itStep < 10)) { |
626 | ||
627 | itStep++; | |
628 | prevRatio = ratio; | |
629 | ||
3e1a3ad8 | 630 | // Cluster position according to charge ratio |
a5cadd36 | 631 | Double_t maxLeft = (ratio*padSignal[2] - padSignal[0]) |
632 | / (padSignal[0] + padSignal[1] + ratio*padSignal[2]); | |
633 | Double_t maxRight = (padSignal[4] - (1-ratio)*padSignal[2]) | |
a6dd11e9 | 634 | / ((1.0 - ratio)*padSignal[2] + padSignal[3] + padSignal[4]); |
f7336fa3 | 635 | |
3e1a3ad8 | 636 | // Set cluster charge ratio |
6a739e92 | 637 | irc = calibration->PadResponse(1.0,maxLeft ,plane,newSignal); |
a5cadd36 | 638 | Double_t ampLeft = padSignal[1] / newSignal[1]; |
6a739e92 | 639 | irc = calibration->PadResponse(1.0,maxRight,plane,newSignal); |
a5cadd36 | 640 | Double_t ampRight = padSignal[3] / newSignal[1]; |
f7336fa3 | 641 | |
3e1a3ad8 | 642 | // Apply pad response to parameters |
6a739e92 | 643 | irc = calibration->PadResponse(ampLeft ,maxLeft ,plane,newLeftSignal ); |
644 | irc = calibration->PadResponse(ampRight,maxRight,plane,newRightSignal); | |
f7336fa3 | 645 | |
3e1a3ad8 | 646 | // Calculate new overlapping ratio |
a5cadd36 | 647 | ratio = TMath::Min((Double_t)1.0,newLeftSignal[2] / |
a6dd11e9 | 648 | (newLeftSignal[2] + newRightSignal[0])); |
f7336fa3 | 649 | |
650 | } | |
651 | ||
652 | return ratio; | |
653 | ||
654 | } | |
655 | ||
3becff3c | 656 | //_____________________________________________________________________________ |
a6dd11e9 | 657 | void AliTRDclusterizerV1::Transform(AliTRDdataArrayI *digitsIn |
658 | , AliTRDdataArrayF *digitsOut | |
659 | , Int_t idet, Int_t nRowMax | |
660 | , Int_t nColMax, Int_t nTimeTotal | |
661 | , Float_t ADCthreshold) | |
3becff3c | 662 | { |
3becff3c | 663 | // |
cb86ff6e | 664 | // Apply gain factor |
a6dd11e9 | 665 | // Apply tail cancelation: Transform digitsIn to digitsOut |
3becff3c | 666 | // |
667 | ||
6d50f529 | 668 | Int_t iRow = 0; |
669 | Int_t iCol = 0; | |
670 | Int_t iTime = 0; | |
3becff3c | 671 | |
a6dd11e9 | 672 | AliTRDRecParam *recParam = AliTRDRecParam::Instance(); |
6d50f529 | 673 | if (!recParam) { |
674 | AliError("No AliTRDRecParam instance available\n"); | |
3becff3c | 675 | return; |
676 | } | |
a6dd11e9 | 677 | AliTRDcalibDB *calibration = AliTRDcalibDB::Instance(); |
6d50f529 | 678 | if (!calibration) { |
679 | AliError("No AliTRDcalibDB instance available\n"); | |
680 | return; | |
681 | } | |
11dc3a9e | 682 | |
a6dd11e9 | 683 | Double_t *inADC = new Double_t[nTimeTotal]; // ADC data before tail cancellation |
684 | Double_t *outADC = new Double_t[nTimeTotal]; // ADC data after tail cancellation | |
3becff3c | 685 | |
6d50f529 | 686 | AliDebug(1,Form("Tail cancellation (nExp = %d) for detector %d.\n" |
687 | ,recParam->GetTCnexp(),idet)); | |
688 | ||
689 | for (iRow = 0; iRow < nRowMax; iRow++ ) { | |
690 | for (iCol = 0; iCol < nColMax; iCol++ ) { | |
a6dd11e9 | 691 | |
6d50f529 | 692 | for (iTime = 0; iTime < nTimeTotal; iTime++) { |
3becff3c | 693 | |
cb86ff6e | 694 | // |
6d50f529 | 695 | // Add gain |
cb86ff6e | 696 | // |
6d50f529 | 697 | Double_t gain = calibration->GetGainFactor(idet,iCol,iRow); |
a6dd11e9 | 698 | if (gain == 0.0) { |
cb86ff6e | 699 | AliError("Not a valid gain\n"); |
700 | } | |
a6dd11e9 | 701 | inADC[iTime] = digitsIn->GetDataUnchecked(iRow,iCol,iTime); |
702 | inADC[iTime] /= gain; | |
703 | outADC[iTime] = inADC[iTime]; | |
6d50f529 | 704 | |
3becff3c | 705 | } |
706 | ||
707 | // Apply the tail cancelation via the digital filter | |
6d50f529 | 708 | if (recParam->TCOn()) { |
a305677e | 709 | DeConvExp(inADC,outADC,nTimeTotal,recParam->GetTCnexp()); |
3becff3c | 710 | } |
711 | ||
6d50f529 | 712 | for (iTime = 0; iTime < nTimeTotal; iTime++) { |
713 | ||
3becff3c | 714 | // Store the amplitude of the digit if above threshold |
a305677e | 715 | if (outADC[iTime] > ADCthreshold) { |
6d50f529 | 716 | AliDebug(2,Form(" iRow = %d, iCol = %d, iTime = %d, adc = %f\n" |
717 | ,iRow,iCol,iTime,outADC[iTime])); | |
11dc3a9e | 718 | digitsOut->SetDataUnchecked(iRow,iCol,iTime,outADC[iTime]); |
3becff3c | 719 | } |
720 | ||
721 | } | |
722 | ||
723 | } | |
3becff3c | 724 | } |
725 | ||
726 | delete [] inADC; | |
727 | delete [] outADC; | |
728 | ||
729 | return; | |
730 | ||
731 | } | |
732 | ||
3becff3c | 733 | //_____________________________________________________________________________ |
a6dd11e9 | 734 | void AliTRDclusterizerV1::DeConvExp(Double_t *source, Double_t *target |
735 | , Int_t n, Int_t nexp) | |
3becff3c | 736 | { |
737 | // | |
6d50f529 | 738 | // Tail cancellation by deconvolution for PASA v4 TRF |
3becff3c | 739 | // |
740 | ||
741 | Double_t rates[2]; | |
742 | Double_t coefficients[2]; | |
743 | ||
6d50f529 | 744 | // Initialization (coefficient = alpha, rates = lambda) |
3becff3c | 745 | Double_t R1 = 1.0; |
746 | Double_t R2 = 1.0; | |
747 | Double_t C1 = 0.5; | |
748 | Double_t C2 = 0.5; | |
749 | ||
750 | if (nexp == 1) { // 1 Exponentials | |
751 | R1 = 1.156; | |
752 | R2 = 0.130; | |
753 | C1 = 0.066; | |
754 | C2 = 0.000; | |
755 | } | |
756 | if (nexp == 2) { // 2 Exponentials | |
757 | R1 = 1.156; | |
758 | R2 = 0.130; | |
759 | C1 = 0.114; | |
760 | C2 = 0.624; | |
761 | } | |
762 | ||
763 | coefficients[0] = C1; | |
764 | coefficients[1] = C2; | |
765 | ||
a6dd11e9 | 766 | Double_t Dt = 0.1; |
3becff3c | 767 | |
768 | rates[0] = TMath::Exp(-Dt/(R1)); | |
769 | rates[1] = TMath::Exp(-Dt/(R2)); | |
770 | ||
6d50f529 | 771 | Int_t i = 0; |
772 | Int_t k = 0; | |
3becff3c | 773 | |
6d50f529 | 774 | Double_t reminder[2]; |
775 | Double_t correction; | |
776 | Double_t result; | |
3becff3c | 777 | |
6d50f529 | 778 | // Attention: computation order is important |
779 | correction = 0.0; | |
780 | for (k = 0; k < nexp; k++) { | |
781 | reminder[k] = 0.0; | |
782 | } | |
783 | for (i = 0; i < n; i++) { | |
a6dd11e9 | 784 | result = (source[i] - correction); // No rescaling |
3becff3c | 785 | target[i] = result; |
786 | ||
6d50f529 | 787 | for (k = 0; k < nexp; k++) { |
788 | reminder[k] = rates[k] * (reminder[k] + coefficients[k] * result); | |
789 | } | |
790 | correction = 0.0; | |
791 | for (k = 0; k < nexp; k++) { | |
792 | correction += reminder[k]; | |
793 | } | |
3becff3c | 794 | } |
795 | ||
796 | } |