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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 | |
793ff80c | 30 | #include "AliRun.h" |
88cb7938 | 31 | #include "AliRunLoader.h" |
32 | #include "AliLoader.h" | |
928e9fae | 33 | #include "AliRawReader.h" |
6d50f529 | 34 | #include "AliLog.h" |
793ff80c | 35 | |
f7336fa3 | 36 | #include "AliTRDclusterizerV1.h" |
f7336fa3 | 37 | #include "AliTRDgeometry.h" |
6f1e466d | 38 | #include "AliTRDdataArrayF.h" |
793ff80c | 39 | #include "AliTRDdataArrayI.h" |
40 | #include "AliTRDdigitsManager.h" | |
a5cadd36 | 41 | #include "AliTRDpadPlane.h" |
928e9fae | 42 | #include "AliTRDrawData.h" |
3551db50 | 43 | #include "AliTRDcalibDB.h" |
3becff3c | 44 | #include "AliTRDSimParam.h" |
3551db50 | 45 | #include "AliTRDRecParam.h" |
46 | #include "AliTRDCommonParam.h" | |
c85a4951 | 47 | #include "AliTRDcluster.h" |
f7336fa3 | 48 | |
49 | ClassImp(AliTRDclusterizerV1) | |
50 | ||
51 | //_____________________________________________________________________________ | |
6d50f529 | 52 | AliTRDclusterizerV1::AliTRDclusterizerV1() |
53 | :AliTRDclusterizer() | |
54 | ,fDigitsManager(NULL) | |
f7336fa3 | 55 | { |
56 | // | |
57 | // AliTRDclusterizerV1 default constructor | |
58 | // | |
59 | ||
f7336fa3 | 60 | } |
61 | ||
62 | //_____________________________________________________________________________ | |
a6dd11e9 | 63 | AliTRDclusterizerV1::AliTRDclusterizerV1(const Text_t *name, const Text_t *title) |
6d50f529 | 64 | :AliTRDclusterizer(name,title) |
65 | ,fDigitsManager(new AliTRDdigitsManager()) | |
f7336fa3 | 66 | { |
67 | // | |
6d50f529 | 68 | // AliTRDclusterizerV1 constructor |
f7336fa3 | 69 | // |
70 | ||
17b26de4 | 71 | fDigitsManager->CreateArrays(); |
f7336fa3 | 72 | |
73 | } | |
74 | ||
8230f242 | 75 | //_____________________________________________________________________________ |
dd9a6ee3 | 76 | AliTRDclusterizerV1::AliTRDclusterizerV1(const AliTRDclusterizerV1 &c) |
6d50f529 | 77 | :AliTRDclusterizer(c) |
78 | ,fDigitsManager(NULL) | |
8230f242 | 79 | { |
80 | // | |
81 | // AliTRDclusterizerV1 copy constructor | |
82 | // | |
83 | ||
8230f242 | 84 | } |
85 | ||
f7336fa3 | 86 | //_____________________________________________________________________________ |
87 | AliTRDclusterizerV1::~AliTRDclusterizerV1() | |
88 | { | |
8230f242 | 89 | // |
90 | // AliTRDclusterizerV1 destructor | |
91 | // | |
f7336fa3 | 92 | |
6f1e466d | 93 | if (fDigitsManager) { |
94 | delete fDigitsManager; | |
abaf1f1d | 95 | fDigitsManager = NULL; |
f7336fa3 | 96 | } |
97 | ||
98 | } | |
99 | ||
dd9a6ee3 | 100 | //_____________________________________________________________________________ |
101 | AliTRDclusterizerV1 &AliTRDclusterizerV1::operator=(const AliTRDclusterizerV1 &c) | |
102 | { | |
103 | // | |
104 | // Assignment operator | |
105 | // | |
106 | ||
107 | if (this != &c) ((AliTRDclusterizerV1 &) c).Copy(*this); | |
108 | return *this; | |
109 | ||
110 | } | |
111 | ||
8230f242 | 112 | //_____________________________________________________________________________ |
e0d47c25 | 113 | void AliTRDclusterizerV1::Copy(TObject &c) const |
8230f242 | 114 | { |
115 | // | |
116 | // Copy function | |
117 | // | |
118 | ||
17b26de4 | 119 | ((AliTRDclusterizerV1 &) c).fDigitsManager = 0; |
8230f242 | 120 | |
121 | AliTRDclusterizer::Copy(c); | |
122 | ||
123 | } | |
124 | ||
f7336fa3 | 125 | //_____________________________________________________________________________ |
126 | Bool_t AliTRDclusterizerV1::ReadDigits() | |
127 | { | |
128 | // | |
129 | // Reads the digits arrays from the input aliroot file | |
130 | // | |
131 | ||
88cb7938 | 132 | if (!fRunLoader) { |
6d50f529 | 133 | AliError("No run loader available"); |
f7336fa3 | 134 | return kFALSE; |
135 | } | |
6d50f529 | 136 | |
88cb7938 | 137 | AliLoader* loader = fRunLoader->GetLoader("TRDLoader"); |
6d50f529 | 138 | if (!loader->TreeD()) { |
139 | loader->LoadDigits(); | |
140 | } | |
abaf1f1d | 141 | |
f7336fa3 | 142 | // Read in the digit arrays |
88cb7938 | 143 | return (fDigitsManager->ReadDigits(loader->TreeD())); |
f7336fa3 | 144 | |
145 | } | |
146 | ||
928e9fae | 147 | //_____________________________________________________________________________ |
a6dd11e9 | 148 | Bool_t AliTRDclusterizerV1::ReadDigits(AliRawReader *rawReader) |
928e9fae | 149 | { |
150 | // | |
151 | // Reads the digits arrays from the ddl file | |
152 | // | |
153 | ||
4ab68796 | 154 | AliTRDrawData raw; |
4ab68796 | 155 | fDigitsManager = raw.Raw2Digits(rawReader); |
928e9fae | 156 | |
157 | return kTRUE; | |
158 | ||
159 | } | |
160 | ||
f7336fa3 | 161 | //_____________________________________________________________________________ |
793ff80c | 162 | Bool_t AliTRDclusterizerV1::MakeClusters() |
f7336fa3 | 163 | { |
164 | // | |
165 | // Generates the cluster. | |
166 | // | |
167 | ||
6d50f529 | 168 | Int_t row = 0; |
169 | Int_t col = 0; | |
170 | Int_t time = 0; | |
171 | Int_t icham = 0; | |
172 | Int_t iplan = 0; | |
173 | Int_t isect = 0; | |
174 | Int_t iPad = 0; | |
175 | ||
176 | AliTRDdataArrayI *digitsIn; | |
a6dd11e9 | 177 | AliTRDdataArrayI *tracksIn; |
f7336fa3 | 178 | |
179 | // Get the geometry | |
6d50f529 | 180 | AliTRDgeometry *geo = AliTRDgeometry::GetGeometry(fRunLoader); |
a6dd11e9 | 181 | |
6d50f529 | 182 | AliTRDcalibDB *calibration = AliTRDcalibDB::Instance(); |
183 | if (!calibration) { | |
184 | AliError("No AliTRDcalibDB instance available\n"); | |
3551db50 | 185 | return kFALSE; |
186 | } | |
187 | ||
6d50f529 | 188 | AliTRDSimParam *simParam = AliTRDSimParam::Instance(); |
189 | if (!simParam) { | |
190 | AliError("No AliTRDSimParam instance available\n"); | |
3becff3c | 191 | return kFALSE; |
192 | } | |
193 | ||
6d50f529 | 194 | AliTRDRecParam *recParam = AliTRDRecParam::Instance(); |
195 | if (!recParam) { | |
196 | AliError("No AliTRDRecParam instance available\n"); | |
3551db50 | 197 | return kFALSE; |
198 | } | |
199 | ||
6d50f529 | 200 | AliTRDCommonParam *commonParam = AliTRDCommonParam::Instance(); |
201 | if (!commonParam) { | |
202 | AliError("Could not get common parameters\n"); | |
3551db50 | 203 | return kFALSE; |
204 | } | |
f7336fa3 | 205 | |
6d50f529 | 206 | // ADC threshols |
a6dd11e9 | 207 | Float_t ADCthreshold = simParam->GetADCthreshold(); |
3e1a3ad8 | 208 | // Threshold value for the maximum |
a6dd11e9 | 209 | Float_t maxThresh = recParam->GetClusMaxThresh(); |
3e1a3ad8 | 210 | // Threshold value for the digit signal |
a6dd11e9 | 211 | Float_t sigThresh = recParam->GetClusSigThresh(); |
6d50f529 | 212 | |
f7336fa3 | 213 | // Iteration limit for unfolding procedure |
8230f242 | 214 | const Float_t kEpsilon = 0.01; |
8230f242 | 215 | const Int_t kNclus = 3; |
216 | const Int_t kNsig = 5; | |
a6dd11e9 | 217 | const Int_t kNdict = AliTRDdigitsManager::kNDict; |
218 | const Int_t kNtrack = kNdict * kNclus; | |
3e1a3ad8 | 219 | |
a5cadd36 | 220 | Int_t iType = 0; |
7ad19338 | 221 | Int_t iUnfold = 0; |
a5cadd36 | 222 | Double_t ratioLeft = 1.0; |
223 | Double_t ratioRight = 1.0; | |
db30bf0f | 224 | |
a6dd11e9 | 225 | Int_t iClusterROC = 0; |
226 | ||
a5cadd36 | 227 | Double_t padSignal[kNsig]; |
228 | Double_t clusterSignal[kNclus]; | |
229 | Double_t clusterPads[kNclus]; | |
f7336fa3 | 230 | |
6d50f529 | 231 | Int_t chamBeg = 0; |
232 | Int_t chamEnd = AliTRDgeometry::Ncham(); | |
233 | Int_t planBeg = 0; | |
234 | Int_t planEnd = AliTRDgeometry::Nplan(); | |
235 | Int_t sectBeg = 0; | |
236 | Int_t sectEnd = AliTRDgeometry::Nsect(); | |
237 | Int_t nTimeTotal = calibration->GetNumberOfTimeBins(); | |
f7336fa3 | 238 | |
a6dd11e9 | 239 | Int_t dummy[9] = { 0, 0, 0, 0, 0, 0, 0, 0, 0 }; |
240 | ||
6d50f529 | 241 | AliDebug(1,Form("Number of Time Bins = %d.\n",nTimeTotal)); |
3becff3c | 242 | |
3e1a3ad8 | 243 | // Start clustering in every chamber |
6d50f529 | 244 | for (icham = chamBeg; icham < chamEnd; icham++) { |
245 | for (iplan = planBeg; iplan < planEnd; iplan++) { | |
246 | for (isect = sectBeg; isect < sectEnd; isect++) { | |
f7336fa3 | 247 | |
a6dd11e9 | 248 | Int_t idet = geo->GetDetector(iplan,icham,isect); |
249 | ||
250 | // Get the digits | |
251 | digitsIn = fDigitsManager->GetDigits(idet); | |
252 | // This is to take care of switched off super modules | |
253 | if (digitsIn->GetNtime() == 0) { | |
254 | continue; | |
255 | } | |
256 | digitsIn->Expand(); | |
257 | AliTRDdataArrayI *tracksTmp = fDigitsManager->GetDictionary(idet,0); | |
258 | tracksTmp->Expand(); | |
259 | ||
260 | AliDebug(1,Form("Analyzing chamber %d, plane %d, sector %d.\n" | |
261 | ,icham,iplan,isect)); | |
3becff3c | 262 | |
263 | Int_t nRowMax = commonParam->GetRowMax(iplan,icham,isect); | |
264 | Int_t nColMax = commonParam->GetColMax(iplan); | |
f7336fa3 | 265 | |
6d50f529 | 266 | AliTRDpadPlane *padPlane = commonParam->GetPadPlane(iplan,icham); |
267 | ||
db30bf0f | 268 | Int_t nClusters = 0; |
269 | Int_t nClusters2pad = 0; | |
270 | Int_t nClusters3pad = 0; | |
271 | Int_t nClusters4pad = 0; | |
272 | Int_t nClusters5pad = 0; | |
273 | Int_t nClustersLarge = 0; | |
3e1a3ad8 | 274 | |
a6dd11e9 | 275 | // Apply the gain and the tail cancelation via digital filter |
6d50f529 | 276 | AliTRDdataArrayF *digitsOut = new AliTRDdataArrayF(digitsIn->GetNrow() |
277 | ,digitsIn->GetNcol() | |
278 | ,digitsIn->GetNtime()); | |
a6dd11e9 | 279 | Transform(digitsIn,digitsOut,idet,nRowMax,nColMax,nTimeTotal,ADCthreshold); |
280 | ||
281 | // Input digits are not needed any more | |
282 | digitsIn->Compress(1,0); | |
6d50f529 | 283 | |
3e1a3ad8 | 284 | // Loop through the chamber and find the maxima |
285 | for ( row = 0; row < nRowMax; row++) { | |
de4b10e5 | 286 | for ( col = 2; col < nColMax; col++) { |
3e1a3ad8 | 287 | for (time = 0; time < nTimeTotal; time++) { |
288 | ||
11dc3a9e | 289 | Float_t signalL = TMath::Abs(digitsOut->GetDataUnchecked(row,col ,time)); |
290 | Float_t signalM = TMath::Abs(digitsOut->GetDataUnchecked(row,col-1,time)); | |
291 | Float_t signalR = TMath::Abs(digitsOut->GetDataUnchecked(row,col-2,time)); | |
3e1a3ad8 | 292 | |
293 | // Look for the maximum | |
db30bf0f | 294 | if (signalM >= maxThresh) { |
6d50f529 | 295 | if ((TMath::Abs(signalL) <= signalM) && |
a6dd11e9 | 296 | (TMath::Abs(signalR) <= signalM)) { |
297 | if ((TMath::Abs(signalL) + TMath::Abs(signalR)) > sigThresh) { | |
298 | // Maximum found, mark the position by a negative signal | |
299 | digitsOut->SetDataUnchecked(row,col-1,time,-signalM); | |
300 | } | |
3e1a3ad8 | 301 | } |
302 | } | |
6d50f529 | 303 | |
304 | } | |
305 | } | |
306 | } | |
a6dd11e9 | 307 | tracksTmp->Compress(1,0); |
308 | ||
309 | // The index to the first cluster of a given ROC | |
310 | Int_t firstClusterROC = -1; | |
311 | // The number of cluster in a given ROC | |
312 | Int_t nClusterROC = 0; | |
3e1a3ad8 | 313 | |
314 | // Now check the maxima and calculate the cluster position | |
315 | for ( row = 0; row < nRowMax ; row++) { | |
db30bf0f | 316 | for (time = 0; time < nTimeTotal; time++) { |
317 | for ( col = 1; col < nColMax-1; col++) { | |
3e1a3ad8 | 318 | |
319 | // Maximum found ? | |
a6dd11e9 | 320 | if (digitsOut->GetDataUnchecked(row,col,time) < 0.0) { |
f7336fa3 | 321 | |
8230f242 | 322 | for (iPad = 0; iPad < kNclus; iPad++) { |
3e1a3ad8 | 323 | Int_t iPadCol = col - 1 + iPad; |
a6dd11e9 | 324 | clusterSignal[iPad] = |
325 | TMath::Abs(digitsOut->GetDataUnchecked(row,iPadCol,time)); | |
f7336fa3 | 326 | } |
327 | ||
db30bf0f | 328 | // Count the number of pads in the cluster |
329 | Int_t nPadCount = 0; | |
a6dd11e9 | 330 | Int_t ii; |
331 | // Look to the left | |
332 | ii = 0; | |
6d50f529 | 333 | while (TMath::Abs(digitsOut->GetDataUnchecked(row,col-ii ,time)) >= sigThresh) { |
db30bf0f | 334 | nPadCount++; |
335 | ii++; | |
336 | if (col-ii < 0) break; | |
337 | } | |
a6dd11e9 | 338 | // Look to the right |
db30bf0f | 339 | ii = 0; |
6d50f529 | 340 | while (TMath::Abs(digitsOut->GetDataUnchecked(row,col+ii+1,time)) >= sigThresh) { |
db30bf0f | 341 | nPadCount++; |
342 | ii++; | |
343 | if (col+ii+1 >= nColMax) break; | |
344 | } | |
db30bf0f | 345 | nClusters++; |
346 | switch (nPadCount) { | |
347 | case 2: | |
348 | iType = 0; | |
349 | nClusters2pad++; | |
350 | break; | |
351 | case 3: | |
352 | iType = 1; | |
353 | nClusters3pad++; | |
354 | break; | |
355 | case 4: | |
356 | iType = 2; | |
357 | nClusters4pad++; | |
358 | break; | |
359 | case 5: | |
360 | iType = 3; | |
361 | nClusters5pad++; | |
362 | break; | |
363 | default: | |
364 | iType = 4; | |
365 | nClustersLarge++; | |
366 | break; | |
367 | }; | |
368 | ||
6d50f529 | 369 | // Look for 5 pad cluster with minimum in the middle |
db30bf0f | 370 | Bool_t fivePadCluster = kFALSE; |
6d50f529 | 371 | if (col < (nColMax - 3)) { |
3becff3c | 372 | if (digitsOut->GetDataUnchecked(row,col+2,time) < 0) { |
db30bf0f | 373 | fivePadCluster = kTRUE; |
374 | } | |
6d50f529 | 375 | if ((fivePadCluster) && (col < (nColMax - 5))) { |
3becff3c | 376 | if (digitsOut->GetDataUnchecked(row,col+4,time) >= sigThresh) { |
db30bf0f | 377 | fivePadCluster = kFALSE; |
378 | } | |
379 | } | |
6d50f529 | 380 | if ((fivePadCluster) && (col > 1)) { |
3becff3c | 381 | if (digitsOut->GetDataUnchecked(row,col-2,time) >= sigThresh) { |
db30bf0f | 382 | fivePadCluster = kFALSE; |
383 | } | |
384 | } | |
385 | } | |
386 | ||
387 | // 5 pad cluster | |
388 | // Modify the signal of the overlapping pad for the left part | |
389 | // of the cluster which remains from a previous unfolding | |
390 | if (iUnfold) { | |
391 | clusterSignal[0] *= ratioLeft; | |
7ad19338 | 392 | iType = 5; |
db30bf0f | 393 | iUnfold = 0; |
394 | } | |
395 | ||
396 | // Unfold the 5 pad cluster | |
397 | if (fivePadCluster) { | |
398 | for (iPad = 0; iPad < kNsig; iPad++) { | |
3becff3c | 399 | padSignal[iPad] = TMath::Abs(digitsOut->GetDataUnchecked(row |
a6dd11e9 | 400 | ,col-1+iPad |
401 | ,time)); | |
f7336fa3 | 402 | } |
db30bf0f | 403 | // Unfold the two maxima and set the signal on |
404 | // the overlapping pad to the ratio | |
17b26de4 | 405 | ratioRight = Unfold(kEpsilon,iplan,padSignal); |
db30bf0f | 406 | ratioLeft = 1.0 - ratioRight; |
407 | clusterSignal[2] *= ratioRight; | |
7ad19338 | 408 | iType = 5; |
db30bf0f | 409 | iUnfold = 1; |
f7336fa3 | 410 | } |
f7336fa3 | 411 | |
a5cadd36 | 412 | Double_t clusterCharge = clusterSignal[0] |
413 | + clusterSignal[1] | |
414 | + clusterSignal[2]; | |
3e1a3ad8 | 415 | |
db30bf0f | 416 | // The position of the cluster |
a6dd11e9 | 417 | clusterPads[0] = row + 0.5; |
3e1a3ad8 | 418 | // Take the shift of the additional time bins into account |
dde59437 | 419 | clusterPads[2] = time + 0.5; |
3e1a3ad8 | 420 | |
3551db50 | 421 | if (recParam->LUTOn()) { |
db30bf0f | 422 | // Calculate the position of the cluster by using the |
423 | // lookup table method | |
3becff3c | 424 | clusterPads[1] = recParam->LUTposition(iplan,clusterSignal[0] |
6d50f529 | 425 | ,clusterSignal[1] |
426 | ,clusterSignal[2]); | |
db30bf0f | 427 | } |
428 | else { | |
db30bf0f | 429 | // Calculate the position of the cluster by using the |
430 | // center of gravity method | |
a6dd11e9 | 431 | for (Int_t i = 0; i < kNsig; i++) { |
432 | padSignal[i] = 0.0; | |
6d50f529 | 433 | } |
a6dd11e9 | 434 | padSignal[2] = TMath::Abs(digitsOut->GetDataUnchecked(row,col ,time)); // Central pad |
435 | padSignal[1] = TMath::Abs(digitsOut->GetDataUnchecked(row,col-1,time)); // Left pad | |
436 | padSignal[3] = TMath::Abs(digitsOut->GetDataUnchecked(row,col+1,time)); // Right pad | |
6d50f529 | 437 | if ((col > 2) && |
438 | (TMath::Abs(digitsOut->GetDataUnchecked(row,col-2,time)) < padSignal[1])) { | |
3becff3c | 439 | padSignal[0] = TMath::Abs(digitsOut->GetDataUnchecked(row,col-2,time)); |
7ad19338 | 440 | } |
6d50f529 | 441 | if ((col < nColMax - 3) && |
442 | (TMath::Abs(digitsOut->GetDataUnchecked(row,col+2,time)) < padSignal[3])) { | |
3becff3c | 443 | padSignal[4] = TMath::Abs(digitsOut->GetDataUnchecked(row,col+2,time)); |
7ad19338 | 444 | } |
6d50f529 | 445 | clusterPads[1] = GetCOG(padSignal); |
db30bf0f | 446 | } |
447 | ||
a5cadd36 | 448 | Double_t q0 = clusterSignal[0]; |
449 | Double_t q1 = clusterSignal[1]; | |
450 | Double_t q2 = clusterSignal[2]; | |
a6dd11e9 | 451 | Double_t clusterSigmaY2 = (q1 * (q0 + q2) + 4.0 * q0 * q2) |
452 | / (clusterCharge*clusterCharge); | |
a819a5f7 | 453 | |
6d50f529 | 454 | // |
3551db50 | 455 | // Calculate the position and the error |
6d50f529 | 456 | // |
457 | ||
458 | // Correct for t0 | |
a6dd11e9 | 459 | Int_t clusterTimeBin = TMath::Nint(time - calibration->GetT0(idet,col,row)); |
6d50f529 | 460 | Double_t colSize = padPlane->GetColSize(col); |
461 | Double_t rowSize = padPlane->GetRowSize(row); | |
cb86ff6e | 462 | |
a5cadd36 | 463 | Double_t clusterPos[3]; |
a6dd11e9 | 464 | clusterPos[0] = padPlane->GetColPos(col) - (clusterPads[1] + 0.5) * colSize; |
465 | clusterPos[1] = padPlane->GetRowPos(row) - 0.5 * rowSize; | |
6d50f529 | 466 | clusterPos[2] = CalcXposFromTimebin(clusterPads[2],idet,col,row); |
a5cadd36 | 467 | Double_t clusterSig[2]; |
a6dd11e9 | 468 | clusterSig[0] = (clusterSigmaY2 + 1.0/12.0) * colSize*colSize; |
469 | clusterSig[1] = rowSize * rowSize / 12.0; | |
3551db50 | 470 | |
a6dd11e9 | 471 | // Add the cluster to the output array |
472 | // The track indices will be stored later | |
473 | AliTRDcluster *cluster = AddCluster(clusterPos | |
474 | ,clusterTimeBin | |
475 | ,idet | |
476 | ,clusterCharge | |
477 | ,dummy | |
478 | ,clusterSig | |
479 | ,iType | |
480 | ,clusterPads[1]); | |
481 | ||
482 | // Store the amplitudes of the pads in the cluster for later analysis | |
483 | Short_t signals[7] = { 0, 0, 0, 0, 0, 0, 0 }; | |
6d50f529 | 484 | for (Int_t jPad = col-3; jPad <= col+3; jPad++) { |
a6dd11e9 | 485 | if ((jPad < 0) || |
486 | (jPad >= nColMax-1)) { | |
6d50f529 | 487 | continue; |
488 | } | |
11dc3a9e | 489 | signals[jPad-col+3] = TMath::Nint(TMath::Abs(digitsOut->GetDataUnchecked(row,jPad,time))); |
c85a4951 | 490 | } |
491 | cluster->SetSignals(signals); | |
6d50f529 | 492 | |
a6dd11e9 | 493 | // Temporarily store the row, column and time bin of the center pad |
494 | // Used to later on assign the track indices | |
495 | cluster->SetLabel( row,0); | |
496 | cluster->SetLabel( col,1); | |
497 | cluster->SetLabel(time,2); | |
6d50f529 | 498 | |
a6dd11e9 | 499 | // Store the index of the first cluster in the current ROC |
500 | if (firstClusterROC < 0) { | |
501 | firstClusterROC = RecPoints()->GetEntriesFast() - 1; | |
502 | } | |
503 | // Count the number of cluster in the current ROC | |
504 | nClusterROC++; | |
505 | ||
506 | } // if: Maximum found ? | |
507 | ||
508 | } // loop: pad columns | |
509 | } // loop: time bins | |
510 | } // loop: pad rows | |
11dc3a9e | 511 | |
512 | delete digitsOut; | |
f7336fa3 | 513 | |
a6dd11e9 | 514 | // |
515 | // Add the track indices to the found clusters | |
516 | // | |
517 | ||
518 | // Temporary array to collect the track indices | |
519 | Int_t *idxTracks = new Int_t[kNtrack*nClusterROC]; | |
520 | ||
521 | // Loop through the dictionary arrays one-by-one | |
522 | // to keep memory consumption low | |
523 | for (Int_t iDict = 0; iDict < kNdict; iDict++) { | |
524 | ||
525 | tracksIn = fDigitsManager->GetDictionary(idet,iDict); | |
526 | tracksIn->Expand(); | |
527 | ||
528 | // Loop though the clusters found in this ROC | |
529 | for (iClusterROC = 0; iClusterROC < nClusterROC; iClusterROC++) { | |
530 | ||
531 | AliTRDcluster *cluster = (AliTRDcluster *) | |
532 | RecPoints()->UncheckedAt(firstClusterROC+iClusterROC); | |
533 | row = cluster->GetLabel(0); | |
534 | col = cluster->GetLabel(1); | |
535 | time = cluster->GetLabel(2); | |
536 | ||
537 | for (iPad = 0; iPad < kNclus; iPad++) { | |
538 | Int_t iPadCol = col - 1 + iPad; | |
539 | Int_t index = tracksIn->GetDataUnchecked(row,iPadCol,time) - 1; | |
540 | idxTracks[3*iPad+iDict + iClusterROC*kNtrack] = index; | |
541 | } | |
542 | ||
543 | } | |
544 | ||
545 | // Compress the arrays | |
546 | tracksIn->Compress(1,0); | |
547 | ||
548 | } | |
549 | ||
550 | // Copy the track indices into the cluster | |
551 | // Loop though the clusters found in this ROC | |
552 | for (iClusterROC = 0; iClusterROC < nClusterROC; iClusterROC++) { | |
553 | ||
554 | AliTRDcluster *cluster = (AliTRDcluster *) | |
555 | RecPoints()->UncheckedAt(firstClusterROC+iClusterROC); | |
556 | cluster->SetLabel(-9999,0); | |
557 | cluster->SetLabel(-9999,1); | |
558 | cluster->SetLabel(-9999,2); | |
559 | ||
560 | cluster->AddTrackIndex(&idxTracks[iClusterROC*kNtrack]); | |
561 | ||
562 | } | |
563 | ||
564 | delete [] idxTracks; | |
f7336fa3 | 565 | |
3e1a3ad8 | 566 | // Write the cluster and reset the array |
793ff80c | 567 | WriteClusters(idet); |
bdbb05bb | 568 | ResetRecPoints(); |
6d50f529 | 569 | |
a6dd11e9 | 570 | } // loop: Sectors |
571 | } // loop: Planes | |
572 | } // loop: Chambers | |
f7336fa3 | 573 | |
f7336fa3 | 574 | return kTRUE; |
575 | ||
576 | } | |
577 | ||
a305677e | 578 | //_____________________________________________________________________________ |
7ad19338 | 579 | Double_t AliTRDclusterizerV1::GetCOG(Double_t signal[5]) |
580 | { | |
581 | // | |
6d50f529 | 582 | // Get COG position |
583 | // Used for clusters with more than 3 pads - where LUT not applicable | |
584 | // | |
585 | ||
a6dd11e9 | 586 | Double_t sum = signal[0] |
587 | + signal[1] | |
588 | + signal[2] | |
589 | + signal[3] | |
590 | + signal[4]; | |
591 | ||
592 | Double_t res = (0.0 * (-signal[0] + signal[4]) | |
593 | + (-signal[1] + signal[3])) / sum; | |
6d50f529 | 594 | |
7ad19338 | 595 | return res; |
6d50f529 | 596 | |
7ad19338 | 597 | } |
598 | ||
f7336fa3 | 599 | //_____________________________________________________________________________ |
a6dd11e9 | 600 | Double_t AliTRDclusterizerV1::Unfold(Double_t eps, Int_t plane, Double_t *padSignal) |
f7336fa3 | 601 | { |
602 | // | |
603 | // Method to unfold neighbouring maxima. | |
604 | // The charge ratio on the overlapping pad is calculated | |
605 | // until there is no more change within the range given by eps. | |
606 | // The resulting ratio is then returned to the calling method. | |
607 | // | |
608 | ||
a6dd11e9 | 609 | AliTRDcalibDB *calibration = AliTRDcalibDB::Instance(); |
6d50f529 | 610 | if (!calibration) { |
611 | AliError("No AliTRDcalibDB instance available\n"); | |
6a739e92 | 612 | return kFALSE; |
3551db50 | 613 | } |
6a739e92 | 614 | |
a5cadd36 | 615 | Int_t irc = 0; |
a6dd11e9 | 616 | Int_t itStep = 0; // Count iteration steps |
f7336fa3 | 617 | |
a6dd11e9 | 618 | Double_t ratio = 0.5; // Start value for ratio |
619 | Double_t prevRatio = 0.0; // Store previous ratio | |
f7336fa3 | 620 | |
a6dd11e9 | 621 | Double_t newLeftSignal[3] = { 0.0, 0.0, 0.0 }; // Array to store left cluster signal |
622 | Double_t newRightSignal[3] = { 0.0, 0.0, 0.0 }; // Array to store right cluster signal | |
623 | Double_t newSignal[3] = { 0.0, 0.0, 0.0 }; | |
f7336fa3 | 624 | |
3e1a3ad8 | 625 | // Start the iteration |
f7336fa3 | 626 | while ((TMath::Abs(prevRatio - ratio) > eps) && (itStep < 10)) { |
627 | ||
628 | itStep++; | |
629 | prevRatio = ratio; | |
630 | ||
3e1a3ad8 | 631 | // Cluster position according to charge ratio |
a5cadd36 | 632 | Double_t maxLeft = (ratio*padSignal[2] - padSignal[0]) |
633 | / (padSignal[0] + padSignal[1] + ratio*padSignal[2]); | |
634 | Double_t maxRight = (padSignal[4] - (1-ratio)*padSignal[2]) | |
a6dd11e9 | 635 | / ((1.0 - ratio)*padSignal[2] + padSignal[3] + padSignal[4]); |
f7336fa3 | 636 | |
3e1a3ad8 | 637 | // Set cluster charge ratio |
6a739e92 | 638 | irc = calibration->PadResponse(1.0,maxLeft ,plane,newSignal); |
a5cadd36 | 639 | Double_t ampLeft = padSignal[1] / newSignal[1]; |
6a739e92 | 640 | irc = calibration->PadResponse(1.0,maxRight,plane,newSignal); |
a5cadd36 | 641 | Double_t ampRight = padSignal[3] / newSignal[1]; |
f7336fa3 | 642 | |
3e1a3ad8 | 643 | // Apply pad response to parameters |
6a739e92 | 644 | irc = calibration->PadResponse(ampLeft ,maxLeft ,plane,newLeftSignal ); |
645 | irc = calibration->PadResponse(ampRight,maxRight,plane,newRightSignal); | |
f7336fa3 | 646 | |
3e1a3ad8 | 647 | // Calculate new overlapping ratio |
a5cadd36 | 648 | ratio = TMath::Min((Double_t)1.0,newLeftSignal[2] / |
a6dd11e9 | 649 | (newLeftSignal[2] + newRightSignal[0])); |
f7336fa3 | 650 | |
651 | } | |
652 | ||
653 | return ratio; | |
654 | ||
655 | } | |
656 | ||
3becff3c | 657 | //_____________________________________________________________________________ |
a6dd11e9 | 658 | void AliTRDclusterizerV1::Transform(AliTRDdataArrayI *digitsIn |
659 | , AliTRDdataArrayF *digitsOut | |
660 | , Int_t idet, Int_t nRowMax | |
661 | , Int_t nColMax, Int_t nTimeTotal | |
662 | , Float_t ADCthreshold) | |
3becff3c | 663 | { |
3becff3c | 664 | // |
cb86ff6e | 665 | // Apply gain factor |
a6dd11e9 | 666 | // Apply tail cancelation: Transform digitsIn to digitsOut |
3becff3c | 667 | // |
668 | ||
6d50f529 | 669 | Int_t iRow = 0; |
670 | Int_t iCol = 0; | |
671 | Int_t iTime = 0; | |
3becff3c | 672 | |
a6dd11e9 | 673 | AliTRDRecParam *recParam = AliTRDRecParam::Instance(); |
6d50f529 | 674 | if (!recParam) { |
675 | AliError("No AliTRDRecParam instance available\n"); | |
3becff3c | 676 | return; |
677 | } | |
a6dd11e9 | 678 | AliTRDcalibDB *calibration = AliTRDcalibDB::Instance(); |
6d50f529 | 679 | if (!calibration) { |
680 | AliError("No AliTRDcalibDB instance available\n"); | |
681 | return; | |
682 | } | |
11dc3a9e | 683 | |
a6dd11e9 | 684 | Double_t *inADC = new Double_t[nTimeTotal]; // ADC data before tail cancellation |
685 | Double_t *outADC = new Double_t[nTimeTotal]; // ADC data after tail cancellation | |
3becff3c | 686 | |
6d50f529 | 687 | AliDebug(1,Form("Tail cancellation (nExp = %d) for detector %d.\n" |
688 | ,recParam->GetTCnexp(),idet)); | |
689 | ||
690 | for (iRow = 0; iRow < nRowMax; iRow++ ) { | |
691 | for (iCol = 0; iCol < nColMax; iCol++ ) { | |
a6dd11e9 | 692 | |
6d50f529 | 693 | for (iTime = 0; iTime < nTimeTotal; iTime++) { |
3becff3c | 694 | |
cb86ff6e | 695 | // |
6d50f529 | 696 | // Add gain |
cb86ff6e | 697 | // |
6d50f529 | 698 | Double_t gain = calibration->GetGainFactor(idet,iCol,iRow); |
a6dd11e9 | 699 | if (gain == 0.0) { |
cb86ff6e | 700 | AliError("Not a valid gain\n"); |
701 | } | |
a6dd11e9 | 702 | inADC[iTime] = digitsIn->GetDataUnchecked(iRow,iCol,iTime); |
703 | inADC[iTime] /= gain; | |
704 | outADC[iTime] = inADC[iTime]; | |
6d50f529 | 705 | |
3becff3c | 706 | } |
707 | ||
708 | // Apply the tail cancelation via the digital filter | |
6d50f529 | 709 | if (recParam->TCOn()) { |
a305677e | 710 | DeConvExp(inADC,outADC,nTimeTotal,recParam->GetTCnexp()); |
3becff3c | 711 | } |
712 | ||
6d50f529 | 713 | for (iTime = 0; iTime < nTimeTotal; iTime++) { |
714 | ||
3becff3c | 715 | // Store the amplitude of the digit if above threshold |
a305677e | 716 | if (outADC[iTime] > ADCthreshold) { |
6d50f529 | 717 | AliDebug(2,Form(" iRow = %d, iCol = %d, iTime = %d, adc = %f\n" |
718 | ,iRow,iCol,iTime,outADC[iTime])); | |
11dc3a9e | 719 | digitsOut->SetDataUnchecked(iRow,iCol,iTime,outADC[iTime]); |
3becff3c | 720 | } |
721 | ||
722 | } | |
723 | ||
724 | } | |
3becff3c | 725 | } |
726 | ||
727 | delete [] inADC; | |
728 | delete [] outADC; | |
729 | ||
730 | return; | |
731 | ||
732 | } | |
733 | ||
3becff3c | 734 | //_____________________________________________________________________________ |
a6dd11e9 | 735 | void AliTRDclusterizerV1::DeConvExp(Double_t *source, Double_t *target |
736 | , Int_t n, Int_t nexp) | |
3becff3c | 737 | { |
738 | // | |
6d50f529 | 739 | // Tail cancellation by deconvolution for PASA v4 TRF |
3becff3c | 740 | // |
741 | ||
742 | Double_t rates[2]; | |
743 | Double_t coefficients[2]; | |
744 | ||
6d50f529 | 745 | // Initialization (coefficient = alpha, rates = lambda) |
3becff3c | 746 | Double_t R1 = 1.0; |
747 | Double_t R2 = 1.0; | |
748 | Double_t C1 = 0.5; | |
749 | Double_t C2 = 0.5; | |
750 | ||
751 | if (nexp == 1) { // 1 Exponentials | |
752 | R1 = 1.156; | |
753 | R2 = 0.130; | |
754 | C1 = 0.066; | |
755 | C2 = 0.000; | |
756 | } | |
757 | if (nexp == 2) { // 2 Exponentials | |
758 | R1 = 1.156; | |
759 | R2 = 0.130; | |
760 | C1 = 0.114; | |
761 | C2 = 0.624; | |
762 | } | |
763 | ||
764 | coefficients[0] = C1; | |
765 | coefficients[1] = C2; | |
766 | ||
a6dd11e9 | 767 | Double_t Dt = 0.1; |
3becff3c | 768 | |
769 | rates[0] = TMath::Exp(-Dt/(R1)); | |
770 | rates[1] = TMath::Exp(-Dt/(R2)); | |
771 | ||
6d50f529 | 772 | Int_t i = 0; |
773 | Int_t k = 0; | |
3becff3c | 774 | |
6d50f529 | 775 | Double_t reminder[2]; |
776 | Double_t correction; | |
777 | Double_t result; | |
3becff3c | 778 | |
6d50f529 | 779 | // Attention: computation order is important |
780 | correction = 0.0; | |
781 | for (k = 0; k < nexp; k++) { | |
782 | reminder[k] = 0.0; | |
783 | } | |
784 | for (i = 0; i < n; i++) { | |
a6dd11e9 | 785 | result = (source[i] - correction); // No rescaling |
3becff3c | 786 | target[i] = result; |
787 | ||
6d50f529 | 788 | for (k = 0; k < nexp; k++) { |
789 | reminder[k] = rates[k] * (reminder[k] + coefficients[k] * result); | |
790 | } | |
791 | correction = 0.0; | |
792 | for (k = 0; k < nexp; k++) { | |
793 | correction += reminder[k]; | |
794 | } | |
3becff3c | 795 | } |
796 | ||
797 | } |