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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 | |
56178ff4 | 48 | #include "Cal/AliTRDCalROC.h" |
49 | #include "Cal/AliTRDCalDet.h" | |
50 | ||
f7336fa3 | 51 | ClassImp(AliTRDclusterizerV1) |
52 | ||
53 | //_____________________________________________________________________________ | |
6d50f529 | 54 | AliTRDclusterizerV1::AliTRDclusterizerV1() |
55 | :AliTRDclusterizer() | |
56 | ,fDigitsManager(NULL) | |
f7336fa3 | 57 | { |
58 | // | |
59 | // AliTRDclusterizerV1 default constructor | |
60 | // | |
61 | ||
f7336fa3 | 62 | } |
63 | ||
64 | //_____________________________________________________________________________ | |
a6dd11e9 | 65 | AliTRDclusterizerV1::AliTRDclusterizerV1(const Text_t *name, const Text_t *title) |
6d50f529 | 66 | :AliTRDclusterizer(name,title) |
67 | ,fDigitsManager(new AliTRDdigitsManager()) | |
f7336fa3 | 68 | { |
69 | // | |
6d50f529 | 70 | // AliTRDclusterizerV1 constructor |
f7336fa3 | 71 | // |
72 | ||
17b26de4 | 73 | fDigitsManager->CreateArrays(); |
f7336fa3 | 74 | |
75 | } | |
76 | ||
8230f242 | 77 | //_____________________________________________________________________________ |
dd9a6ee3 | 78 | AliTRDclusterizerV1::AliTRDclusterizerV1(const AliTRDclusterizerV1 &c) |
6d50f529 | 79 | :AliTRDclusterizer(c) |
80 | ,fDigitsManager(NULL) | |
8230f242 | 81 | { |
82 | // | |
83 | // AliTRDclusterizerV1 copy constructor | |
84 | // | |
85 | ||
8230f242 | 86 | } |
87 | ||
f7336fa3 | 88 | //_____________________________________________________________________________ |
89 | AliTRDclusterizerV1::~AliTRDclusterizerV1() | |
90 | { | |
8230f242 | 91 | // |
92 | // AliTRDclusterizerV1 destructor | |
93 | // | |
f7336fa3 | 94 | |
6f1e466d | 95 | if (fDigitsManager) { |
96 | delete fDigitsManager; | |
abaf1f1d | 97 | fDigitsManager = NULL; |
f7336fa3 | 98 | } |
99 | ||
100 | } | |
101 | ||
dd9a6ee3 | 102 | //_____________________________________________________________________________ |
103 | AliTRDclusterizerV1 &AliTRDclusterizerV1::operator=(const AliTRDclusterizerV1 &c) | |
104 | { | |
105 | // | |
106 | // Assignment operator | |
107 | // | |
108 | ||
109 | if (this != &c) ((AliTRDclusterizerV1 &) c).Copy(*this); | |
110 | return *this; | |
111 | ||
112 | } | |
113 | ||
8230f242 | 114 | //_____________________________________________________________________________ |
e0d47c25 | 115 | void AliTRDclusterizerV1::Copy(TObject &c) const |
8230f242 | 116 | { |
117 | // | |
118 | // Copy function | |
119 | // | |
120 | ||
17b26de4 | 121 | ((AliTRDclusterizerV1 &) c).fDigitsManager = 0; |
8230f242 | 122 | |
123 | AliTRDclusterizer::Copy(c); | |
124 | ||
125 | } | |
126 | ||
f7336fa3 | 127 | //_____________________________________________________________________________ |
128 | Bool_t AliTRDclusterizerV1::ReadDigits() | |
129 | { | |
130 | // | |
131 | // Reads the digits arrays from the input aliroot file | |
132 | // | |
133 | ||
88cb7938 | 134 | if (!fRunLoader) { |
6d50f529 | 135 | AliError("No run loader available"); |
f7336fa3 | 136 | return kFALSE; |
137 | } | |
6d50f529 | 138 | |
88cb7938 | 139 | AliLoader* loader = fRunLoader->GetLoader("TRDLoader"); |
6d50f529 | 140 | if (!loader->TreeD()) { |
141 | loader->LoadDigits(); | |
142 | } | |
abaf1f1d | 143 | |
f7336fa3 | 144 | // Read in the digit arrays |
88cb7938 | 145 | return (fDigitsManager->ReadDigits(loader->TreeD())); |
f7336fa3 | 146 | |
147 | } | |
148 | ||
928e9fae | 149 | //_____________________________________________________________________________ |
a6dd11e9 | 150 | Bool_t AliTRDclusterizerV1::ReadDigits(AliRawReader *rawReader) |
928e9fae | 151 | { |
152 | // | |
153 | // Reads the digits arrays from the ddl file | |
154 | // | |
155 | ||
4ab68796 | 156 | AliTRDrawData raw; |
4ab68796 | 157 | fDigitsManager = raw.Raw2Digits(rawReader); |
928e9fae | 158 | |
159 | return kTRUE; | |
160 | ||
161 | } | |
162 | ||
f7336fa3 | 163 | //_____________________________________________________________________________ |
793ff80c | 164 | Bool_t AliTRDclusterizerV1::MakeClusters() |
f7336fa3 | 165 | { |
166 | // | |
167 | // Generates the cluster. | |
168 | // | |
169 | ||
6d50f529 | 170 | Int_t row = 0; |
171 | Int_t col = 0; | |
172 | Int_t time = 0; | |
173 | Int_t icham = 0; | |
174 | Int_t iplan = 0; | |
175 | Int_t isect = 0; | |
176 | Int_t iPad = 0; | |
177 | ||
178 | AliTRDdataArrayI *digitsIn; | |
a6dd11e9 | 179 | AliTRDdataArrayI *tracksIn; |
f7336fa3 | 180 | |
181 | // Get the geometry | |
6d50f529 | 182 | AliTRDgeometry *geo = AliTRDgeometry::GetGeometry(fRunLoader); |
a6dd11e9 | 183 | |
6d50f529 | 184 | AliTRDcalibDB *calibration = AliTRDcalibDB::Instance(); |
185 | if (!calibration) { | |
4fad09c9 | 186 | AliFatal("No AliTRDcalibDB instance available\n"); |
3551db50 | 187 | return kFALSE; |
188 | } | |
189 | ||
6d50f529 | 190 | AliTRDSimParam *simParam = AliTRDSimParam::Instance(); |
191 | if (!simParam) { | |
192 | AliError("No AliTRDSimParam instance available\n"); | |
3becff3c | 193 | return kFALSE; |
194 | } | |
195 | ||
6d50f529 | 196 | AliTRDRecParam *recParam = AliTRDRecParam::Instance(); |
197 | if (!recParam) { | |
198 | AliError("No AliTRDRecParam instance available\n"); | |
3551db50 | 199 | return kFALSE; |
200 | } | |
201 | ||
6d50f529 | 202 | AliTRDCommonParam *commonParam = AliTRDCommonParam::Instance(); |
203 | if (!commonParam) { | |
204 | AliError("Could not get common parameters\n"); | |
3551db50 | 205 | return kFALSE; |
206 | } | |
f7336fa3 | 207 | |
6d50f529 | 208 | // ADC threshols |
a6dd11e9 | 209 | Float_t ADCthreshold = simParam->GetADCthreshold(); |
3e1a3ad8 | 210 | // Threshold value for the maximum |
a6dd11e9 | 211 | Float_t maxThresh = recParam->GetClusMaxThresh(); |
3e1a3ad8 | 212 | // Threshold value for the digit signal |
a6dd11e9 | 213 | Float_t sigThresh = recParam->GetClusSigThresh(); |
6d50f529 | 214 | |
56178ff4 | 215 | // Detector wise calibration object for t0 |
216 | const AliTRDCalDet *calT0Det = calibration->GetT0Det(); | |
217 | ||
f7336fa3 | 218 | // Iteration limit for unfolding procedure |
8230f242 | 219 | const Float_t kEpsilon = 0.01; |
8230f242 | 220 | const Int_t kNclus = 3; |
221 | const Int_t kNsig = 5; | |
a6dd11e9 | 222 | const Int_t kNdict = AliTRDdigitsManager::kNDict; |
223 | const Int_t kNtrack = kNdict * kNclus; | |
3e1a3ad8 | 224 | |
a5cadd36 | 225 | Int_t iType = 0; |
7ad19338 | 226 | Int_t iUnfold = 0; |
a5cadd36 | 227 | Double_t ratioLeft = 1.0; |
228 | Double_t ratioRight = 1.0; | |
db30bf0f | 229 | |
a6dd11e9 | 230 | Int_t iClusterROC = 0; |
231 | ||
a5cadd36 | 232 | Double_t padSignal[kNsig]; |
233 | Double_t clusterSignal[kNclus]; | |
234 | Double_t clusterPads[kNclus]; | |
f7336fa3 | 235 | |
6d50f529 | 236 | Int_t chamBeg = 0; |
237 | Int_t chamEnd = AliTRDgeometry::Ncham(); | |
238 | Int_t planBeg = 0; | |
239 | Int_t planEnd = AliTRDgeometry::Nplan(); | |
240 | Int_t sectBeg = 0; | |
241 | Int_t sectEnd = AliTRDgeometry::Nsect(); | |
242 | Int_t nTimeTotal = calibration->GetNumberOfTimeBins(); | |
f7336fa3 | 243 | |
a6dd11e9 | 244 | Int_t dummy[9] = { 0, 0, 0, 0, 0, 0, 0, 0, 0 }; |
245 | ||
6d50f529 | 246 | AliDebug(1,Form("Number of Time Bins = %d.\n",nTimeTotal)); |
3becff3c | 247 | |
3e1a3ad8 | 248 | // Start clustering in every chamber |
6d50f529 | 249 | for (icham = chamBeg; icham < chamEnd; icham++) { |
250 | for (iplan = planBeg; iplan < planEnd; iplan++) { | |
251 | for (isect = sectBeg; isect < sectEnd; isect++) { | |
f7336fa3 | 252 | |
a6dd11e9 | 253 | Int_t idet = geo->GetDetector(iplan,icham,isect); |
254 | ||
255 | // Get the digits | |
256 | digitsIn = fDigitsManager->GetDigits(idet); | |
257 | // This is to take care of switched off super modules | |
258 | if (digitsIn->GetNtime() == 0) { | |
259 | continue; | |
260 | } | |
261 | digitsIn->Expand(); | |
262 | AliTRDdataArrayI *tracksTmp = fDigitsManager->GetDictionary(idet,0); | |
263 | tracksTmp->Expand(); | |
264 | ||
3becff3c | 265 | Int_t nRowMax = commonParam->GetRowMax(iplan,icham,isect); |
266 | Int_t nColMax = commonParam->GetColMax(iplan); | |
f7336fa3 | 267 | |
6d50f529 | 268 | AliTRDpadPlane *padPlane = commonParam->GetPadPlane(iplan,icham); |
269 | ||
56178ff4 | 270 | // Calibration object with pad wise values for t0 |
271 | AliTRDCalROC *calT0ROC = calibration->GetT0ROC(idet); | |
272 | // Calibration value for chamber wise t0 | |
273 | Float_t calT0DetValue = calT0Det->GetValue(idet); | |
274 | ||
db30bf0f | 275 | Int_t nClusters = 0; |
276 | Int_t nClusters2pad = 0; | |
277 | Int_t nClusters3pad = 0; | |
278 | Int_t nClusters4pad = 0; | |
279 | Int_t nClusters5pad = 0; | |
280 | Int_t nClustersLarge = 0; | |
3e1a3ad8 | 281 | |
a6dd11e9 | 282 | // Apply the gain and the tail cancelation via digital filter |
6d50f529 | 283 | AliTRDdataArrayF *digitsOut = new AliTRDdataArrayF(digitsIn->GetNrow() |
284 | ,digitsIn->GetNcol() | |
285 | ,digitsIn->GetNtime()); | |
a6dd11e9 | 286 | Transform(digitsIn,digitsOut,idet,nRowMax,nColMax,nTimeTotal,ADCthreshold); |
287 | ||
288 | // Input digits are not needed any more | |
289 | digitsIn->Compress(1,0); | |
6d50f529 | 290 | |
3e1a3ad8 | 291 | // Loop through the chamber and find the maxima |
292 | for ( row = 0; row < nRowMax; row++) { | |
de4b10e5 | 293 | for ( col = 2; col < nColMax; col++) { |
3e1a3ad8 | 294 | for (time = 0; time < nTimeTotal; time++) { |
295 | ||
11dc3a9e | 296 | Float_t signalM = TMath::Abs(digitsOut->GetDataUnchecked(row,col-1,time)); |
3e1a3ad8 | 297 | |
298 | // Look for the maximum | |
db30bf0f | 299 | if (signalM >= maxThresh) { |
6a242715 | 300 | |
301 | Float_t signalL = TMath::Abs(digitsOut->GetDataUnchecked(row,col ,time)); | |
302 | Float_t signalR = TMath::Abs(digitsOut->GetDataUnchecked(row,col-2,time)); | |
303 | ||
6d50f529 | 304 | if ((TMath::Abs(signalL) <= signalM) && |
21ee7de5 | 305 | (TMath::Abs(signalR) < signalM)) { |
6493a90f | 306 | if ((TMath::Abs(signalL) >= sigThresh) || |
307 | (TMath::Abs(signalR) >= sigThresh)) { | |
a6dd11e9 | 308 | // Maximum found, mark the position by a negative signal |
309 | digitsOut->SetDataUnchecked(row,col-1,time,-signalM); | |
310 | } | |
3e1a3ad8 | 311 | } |
6a242715 | 312 | |
3e1a3ad8 | 313 | } |
6d50f529 | 314 | |
315 | } | |
316 | } | |
317 | } | |
a6dd11e9 | 318 | tracksTmp->Compress(1,0); |
319 | ||
320 | // The index to the first cluster of a given ROC | |
321 | Int_t firstClusterROC = -1; | |
322 | // The number of cluster in a given ROC | |
323 | Int_t nClusterROC = 0; | |
3e1a3ad8 | 324 | |
325 | // Now check the maxima and calculate the cluster position | |
326 | for ( row = 0; row < nRowMax ; row++) { | |
db30bf0f | 327 | for (time = 0; time < nTimeTotal; time++) { |
328 | for ( col = 1; col < nColMax-1; col++) { | |
3e1a3ad8 | 329 | |
330 | // Maximum found ? | |
a6dd11e9 | 331 | if (digitsOut->GetDataUnchecked(row,col,time) < 0.0) { |
f7336fa3 | 332 | |
8230f242 | 333 | for (iPad = 0; iPad < kNclus; iPad++) { |
3e1a3ad8 | 334 | Int_t iPadCol = col - 1 + iPad; |
a6dd11e9 | 335 | clusterSignal[iPad] = |
336 | TMath::Abs(digitsOut->GetDataUnchecked(row,iPadCol,time)); | |
f7336fa3 | 337 | } |
338 | ||
db30bf0f | 339 | // Count the number of pads in the cluster |
340 | Int_t nPadCount = 0; | |
a6dd11e9 | 341 | Int_t ii; |
342 | // Look to the left | |
343 | ii = 0; | |
6d50f529 | 344 | while (TMath::Abs(digitsOut->GetDataUnchecked(row,col-ii ,time)) >= sigThresh) { |
db30bf0f | 345 | nPadCount++; |
346 | ii++; | |
347 | if (col-ii < 0) break; | |
348 | } | |
a6dd11e9 | 349 | // Look to the right |
db30bf0f | 350 | ii = 0; |
6d50f529 | 351 | while (TMath::Abs(digitsOut->GetDataUnchecked(row,col+ii+1,time)) >= sigThresh) { |
db30bf0f | 352 | nPadCount++; |
353 | ii++; | |
354 | if (col+ii+1 >= nColMax) break; | |
355 | } | |
db30bf0f | 356 | nClusters++; |
357 | switch (nPadCount) { | |
358 | case 2: | |
359 | iType = 0; | |
360 | nClusters2pad++; | |
361 | break; | |
362 | case 3: | |
363 | iType = 1; | |
364 | nClusters3pad++; | |
365 | break; | |
366 | case 4: | |
367 | iType = 2; | |
368 | nClusters4pad++; | |
369 | break; | |
370 | case 5: | |
371 | iType = 3; | |
372 | nClusters5pad++; | |
373 | break; | |
374 | default: | |
375 | iType = 4; | |
376 | nClustersLarge++; | |
377 | break; | |
378 | }; | |
379 | ||
6d50f529 | 380 | // Look for 5 pad cluster with minimum in the middle |
db30bf0f | 381 | Bool_t fivePadCluster = kFALSE; |
6d50f529 | 382 | if (col < (nColMax - 3)) { |
3becff3c | 383 | if (digitsOut->GetDataUnchecked(row,col+2,time) < 0) { |
db30bf0f | 384 | fivePadCluster = kTRUE; |
385 | } | |
6d50f529 | 386 | if ((fivePadCluster) && (col < (nColMax - 5))) { |
3becff3c | 387 | if (digitsOut->GetDataUnchecked(row,col+4,time) >= sigThresh) { |
db30bf0f | 388 | fivePadCluster = kFALSE; |
389 | } | |
390 | } | |
6d50f529 | 391 | if ((fivePadCluster) && (col > 1)) { |
3becff3c | 392 | if (digitsOut->GetDataUnchecked(row,col-2,time) >= sigThresh) { |
db30bf0f | 393 | fivePadCluster = kFALSE; |
394 | } | |
395 | } | |
396 | } | |
397 | ||
398 | // 5 pad cluster | |
399 | // Modify the signal of the overlapping pad for the left part | |
400 | // of the cluster which remains from a previous unfolding | |
401 | if (iUnfold) { | |
402 | clusterSignal[0] *= ratioLeft; | |
7ad19338 | 403 | iType = 5; |
db30bf0f | 404 | iUnfold = 0; |
405 | } | |
406 | ||
407 | // Unfold the 5 pad cluster | |
408 | if (fivePadCluster) { | |
409 | for (iPad = 0; iPad < kNsig; iPad++) { | |
3becff3c | 410 | padSignal[iPad] = TMath::Abs(digitsOut->GetDataUnchecked(row |
a6dd11e9 | 411 | ,col-1+iPad |
412 | ,time)); | |
f7336fa3 | 413 | } |
db30bf0f | 414 | // Unfold the two maxima and set the signal on |
415 | // the overlapping pad to the ratio | |
17b26de4 | 416 | ratioRight = Unfold(kEpsilon,iplan,padSignal); |
db30bf0f | 417 | ratioLeft = 1.0 - ratioRight; |
418 | clusterSignal[2] *= ratioRight; | |
7ad19338 | 419 | iType = 5; |
db30bf0f | 420 | iUnfold = 1; |
f7336fa3 | 421 | } |
f7336fa3 | 422 | |
a5cadd36 | 423 | Double_t clusterCharge = clusterSignal[0] |
424 | + clusterSignal[1] | |
425 | + clusterSignal[2]; | |
3e1a3ad8 | 426 | |
db30bf0f | 427 | // The position of the cluster |
a6dd11e9 | 428 | clusterPads[0] = row + 0.5; |
3e1a3ad8 | 429 | // Take the shift of the additional time bins into account |
dde59437 | 430 | clusterPads[2] = time + 0.5; |
3e1a3ad8 | 431 | |
3551db50 | 432 | if (recParam->LUTOn()) { |
db30bf0f | 433 | // Calculate the position of the cluster by using the |
434 | // lookup table method | |
3becff3c | 435 | clusterPads[1] = recParam->LUTposition(iplan,clusterSignal[0] |
6d50f529 | 436 | ,clusterSignal[1] |
437 | ,clusterSignal[2]); | |
db30bf0f | 438 | } |
439 | else { | |
db30bf0f | 440 | // Calculate the position of the cluster by using the |
441 | // center of gravity method | |
a6dd11e9 | 442 | for (Int_t i = 0; i < kNsig; i++) { |
443 | padSignal[i] = 0.0; | |
6d50f529 | 444 | } |
a6dd11e9 | 445 | padSignal[2] = TMath::Abs(digitsOut->GetDataUnchecked(row,col ,time)); // Central pad |
446 | padSignal[1] = TMath::Abs(digitsOut->GetDataUnchecked(row,col-1,time)); // Left pad | |
447 | padSignal[3] = TMath::Abs(digitsOut->GetDataUnchecked(row,col+1,time)); // Right pad | |
6d50f529 | 448 | if ((col > 2) && |
449 | (TMath::Abs(digitsOut->GetDataUnchecked(row,col-2,time)) < padSignal[1])) { | |
3becff3c | 450 | padSignal[0] = TMath::Abs(digitsOut->GetDataUnchecked(row,col-2,time)); |
7ad19338 | 451 | } |
6d50f529 | 452 | if ((col < nColMax - 3) && |
453 | (TMath::Abs(digitsOut->GetDataUnchecked(row,col+2,time)) < padSignal[3])) { | |
3becff3c | 454 | padSignal[4] = TMath::Abs(digitsOut->GetDataUnchecked(row,col+2,time)); |
7ad19338 | 455 | } |
6d50f529 | 456 | clusterPads[1] = GetCOG(padSignal); |
db30bf0f | 457 | } |
458 | ||
a5cadd36 | 459 | Double_t q0 = clusterSignal[0]; |
460 | Double_t q1 = clusterSignal[1]; | |
461 | Double_t q2 = clusterSignal[2]; | |
a6dd11e9 | 462 | Double_t clusterSigmaY2 = (q1 * (q0 + q2) + 4.0 * q0 * q2) |
463 | / (clusterCharge*clusterCharge); | |
a819a5f7 | 464 | |
6d50f529 | 465 | // |
3551db50 | 466 | // Calculate the position and the error |
6d50f529 | 467 | // |
468 | ||
56178ff4 | 469 | // Correct for t0 (sum of chamber and pad wise values !!!) |
470 | Float_t calT0ROCValue = calT0ROC->GetValue(col,row); | |
471 | Int_t clusterTimeBin = TMath::Nint(time - (calT0DetValue + calT0ROCValue)); | |
6d50f529 | 472 | Double_t colSize = padPlane->GetColSize(col); |
473 | Double_t rowSize = padPlane->GetRowSize(row); | |
cb86ff6e | 474 | |
a5cadd36 | 475 | Double_t clusterPos[3]; |
a6dd11e9 | 476 | clusterPos[0] = padPlane->GetColPos(col) - (clusterPads[1] + 0.5) * colSize; |
477 | clusterPos[1] = padPlane->GetRowPos(row) - 0.5 * rowSize; | |
6d50f529 | 478 | clusterPos[2] = CalcXposFromTimebin(clusterPads[2],idet,col,row); |
a5cadd36 | 479 | Double_t clusterSig[2]; |
a6dd11e9 | 480 | clusterSig[0] = (clusterSigmaY2 + 1.0/12.0) * colSize*colSize; |
481 | clusterSig[1] = rowSize * rowSize / 12.0; | |
3551db50 | 482 | |
a6dd11e9 | 483 | // Add the cluster to the output array |
484 | // The track indices will be stored later | |
485 | AliTRDcluster *cluster = AddCluster(clusterPos | |
486 | ,clusterTimeBin | |
487 | ,idet | |
488 | ,clusterCharge | |
489 | ,dummy | |
490 | ,clusterSig | |
491 | ,iType | |
492 | ,clusterPads[1]); | |
493 | ||
494 | // Store the amplitudes of the pads in the cluster for later analysis | |
495 | Short_t signals[7] = { 0, 0, 0, 0, 0, 0, 0 }; | |
6d50f529 | 496 | for (Int_t jPad = col-3; jPad <= col+3; jPad++) { |
a6dd11e9 | 497 | if ((jPad < 0) || |
498 | (jPad >= nColMax-1)) { | |
6d50f529 | 499 | continue; |
500 | } | |
11dc3a9e | 501 | signals[jPad-col+3] = TMath::Nint(TMath::Abs(digitsOut->GetDataUnchecked(row,jPad,time))); |
c85a4951 | 502 | } |
503 | cluster->SetSignals(signals); | |
6d50f529 | 504 | |
a6dd11e9 | 505 | // Temporarily store the row, column and time bin of the center pad |
506 | // Used to later on assign the track indices | |
507 | cluster->SetLabel( row,0); | |
508 | cluster->SetLabel( col,1); | |
509 | cluster->SetLabel(time,2); | |
6d50f529 | 510 | |
a6dd11e9 | 511 | // Store the index of the first cluster in the current ROC |
512 | if (firstClusterROC < 0) { | |
513 | firstClusterROC = RecPoints()->GetEntriesFast() - 1; | |
514 | } | |
515 | // Count the number of cluster in the current ROC | |
516 | nClusterROC++; | |
517 | ||
518 | } // if: Maximum found ? | |
519 | ||
520 | } // loop: pad columns | |
521 | } // loop: time bins | |
522 | } // loop: pad rows | |
11dc3a9e | 523 | |
524 | delete digitsOut; | |
f7336fa3 | 525 | |
a6dd11e9 | 526 | // |
527 | // Add the track indices to the found clusters | |
528 | // | |
529 | ||
530 | // Temporary array to collect the track indices | |
531 | Int_t *idxTracks = new Int_t[kNtrack*nClusterROC]; | |
532 | ||
533 | // Loop through the dictionary arrays one-by-one | |
534 | // to keep memory consumption low | |
535 | for (Int_t iDict = 0; iDict < kNdict; iDict++) { | |
536 | ||
537 | tracksIn = fDigitsManager->GetDictionary(idet,iDict); | |
538 | tracksIn->Expand(); | |
539 | ||
540 | // Loop though the clusters found in this ROC | |
541 | for (iClusterROC = 0; iClusterROC < nClusterROC; iClusterROC++) { | |
542 | ||
543 | AliTRDcluster *cluster = (AliTRDcluster *) | |
544 | RecPoints()->UncheckedAt(firstClusterROC+iClusterROC); | |
545 | row = cluster->GetLabel(0); | |
546 | col = cluster->GetLabel(1); | |
547 | time = cluster->GetLabel(2); | |
548 | ||
549 | for (iPad = 0; iPad < kNclus; iPad++) { | |
550 | Int_t iPadCol = col - 1 + iPad; | |
551 | Int_t index = tracksIn->GetDataUnchecked(row,iPadCol,time) - 1; | |
552 | idxTracks[3*iPad+iDict + iClusterROC*kNtrack] = index; | |
553 | } | |
554 | ||
555 | } | |
556 | ||
557 | // Compress the arrays | |
558 | tracksIn->Compress(1,0); | |
559 | ||
560 | } | |
561 | ||
562 | // Copy the track indices into the cluster | |
563 | // Loop though the clusters found in this ROC | |
564 | for (iClusterROC = 0; iClusterROC < nClusterROC; iClusterROC++) { | |
565 | ||
566 | AliTRDcluster *cluster = (AliTRDcluster *) | |
567 | RecPoints()->UncheckedAt(firstClusterROC+iClusterROC); | |
568 | cluster->SetLabel(-9999,0); | |
569 | cluster->SetLabel(-9999,1); | |
570 | cluster->SetLabel(-9999,2); | |
571 | ||
572 | cluster->AddTrackIndex(&idxTracks[iClusterROC*kNtrack]); | |
573 | ||
574 | } | |
575 | ||
576 | delete [] idxTracks; | |
f7336fa3 | 577 | |
3e1a3ad8 | 578 | // Write the cluster and reset the array |
793ff80c | 579 | WriteClusters(idet); |
bdbb05bb | 580 | ResetRecPoints(); |
6d50f529 | 581 | |
a6dd11e9 | 582 | } // loop: Sectors |
583 | } // loop: Planes | |
584 | } // loop: Chambers | |
f7336fa3 | 585 | |
f7336fa3 | 586 | return kTRUE; |
587 | ||
588 | } | |
589 | ||
a305677e | 590 | //_____________________________________________________________________________ |
7ad19338 | 591 | Double_t AliTRDclusterizerV1::GetCOG(Double_t signal[5]) |
592 | { | |
593 | // | |
6d50f529 | 594 | // Get COG position |
595 | // Used for clusters with more than 3 pads - where LUT not applicable | |
596 | // | |
597 | ||
a6dd11e9 | 598 | Double_t sum = signal[0] |
599 | + signal[1] | |
600 | + signal[2] | |
601 | + signal[3] | |
602 | + signal[4]; | |
603 | ||
604 | Double_t res = (0.0 * (-signal[0] + signal[4]) | |
605 | + (-signal[1] + signal[3])) / sum; | |
6d50f529 | 606 | |
7ad19338 | 607 | return res; |
6d50f529 | 608 | |
7ad19338 | 609 | } |
610 | ||
f7336fa3 | 611 | //_____________________________________________________________________________ |
a6dd11e9 | 612 | Double_t AliTRDclusterizerV1::Unfold(Double_t eps, Int_t plane, Double_t *padSignal) |
f7336fa3 | 613 | { |
614 | // | |
615 | // Method to unfold neighbouring maxima. | |
616 | // The charge ratio on the overlapping pad is calculated | |
617 | // until there is no more change within the range given by eps. | |
618 | // The resulting ratio is then returned to the calling method. | |
619 | // | |
620 | ||
a6dd11e9 | 621 | AliTRDcalibDB *calibration = AliTRDcalibDB::Instance(); |
6d50f529 | 622 | if (!calibration) { |
623 | AliError("No AliTRDcalibDB instance available\n"); | |
6a739e92 | 624 | return kFALSE; |
3551db50 | 625 | } |
6a739e92 | 626 | |
a5cadd36 | 627 | Int_t irc = 0; |
a6dd11e9 | 628 | Int_t itStep = 0; // Count iteration steps |
f7336fa3 | 629 | |
a6dd11e9 | 630 | Double_t ratio = 0.5; // Start value for ratio |
631 | Double_t prevRatio = 0.0; // Store previous ratio | |
f7336fa3 | 632 | |
a6dd11e9 | 633 | Double_t newLeftSignal[3] = { 0.0, 0.0, 0.0 }; // Array to store left cluster signal |
634 | Double_t newRightSignal[3] = { 0.0, 0.0, 0.0 }; // Array to store right cluster signal | |
635 | Double_t newSignal[3] = { 0.0, 0.0, 0.0 }; | |
f7336fa3 | 636 | |
3e1a3ad8 | 637 | // Start the iteration |
f7336fa3 | 638 | while ((TMath::Abs(prevRatio - ratio) > eps) && (itStep < 10)) { |
639 | ||
640 | itStep++; | |
641 | prevRatio = ratio; | |
642 | ||
3e1a3ad8 | 643 | // Cluster position according to charge ratio |
a5cadd36 | 644 | Double_t maxLeft = (ratio*padSignal[2] - padSignal[0]) |
645 | / (padSignal[0] + padSignal[1] + ratio*padSignal[2]); | |
646 | Double_t maxRight = (padSignal[4] - (1-ratio)*padSignal[2]) | |
a6dd11e9 | 647 | / ((1.0 - ratio)*padSignal[2] + padSignal[3] + padSignal[4]); |
f7336fa3 | 648 | |
3e1a3ad8 | 649 | // Set cluster charge ratio |
6a739e92 | 650 | irc = calibration->PadResponse(1.0,maxLeft ,plane,newSignal); |
a5cadd36 | 651 | Double_t ampLeft = padSignal[1] / newSignal[1]; |
6a739e92 | 652 | irc = calibration->PadResponse(1.0,maxRight,plane,newSignal); |
a5cadd36 | 653 | Double_t ampRight = padSignal[3] / newSignal[1]; |
f7336fa3 | 654 | |
3e1a3ad8 | 655 | // Apply pad response to parameters |
6a739e92 | 656 | irc = calibration->PadResponse(ampLeft ,maxLeft ,plane,newLeftSignal ); |
657 | irc = calibration->PadResponse(ampRight,maxRight,plane,newRightSignal); | |
f7336fa3 | 658 | |
3e1a3ad8 | 659 | // Calculate new overlapping ratio |
a5cadd36 | 660 | ratio = TMath::Min((Double_t)1.0,newLeftSignal[2] / |
a6dd11e9 | 661 | (newLeftSignal[2] + newRightSignal[0])); |
f7336fa3 | 662 | |
663 | } | |
664 | ||
665 | return ratio; | |
666 | ||
667 | } | |
668 | ||
3becff3c | 669 | //_____________________________________________________________________________ |
a6dd11e9 | 670 | void AliTRDclusterizerV1::Transform(AliTRDdataArrayI *digitsIn |
671 | , AliTRDdataArrayF *digitsOut | |
672 | , Int_t idet, Int_t nRowMax | |
673 | , Int_t nColMax, Int_t nTimeTotal | |
674 | , Float_t ADCthreshold) | |
3becff3c | 675 | { |
3becff3c | 676 | // |
cb86ff6e | 677 | // Apply gain factor |
a6dd11e9 | 678 | // Apply tail cancelation: Transform digitsIn to digitsOut |
3becff3c | 679 | // |
680 | ||
6d50f529 | 681 | Int_t iRow = 0; |
682 | Int_t iCol = 0; | |
683 | Int_t iTime = 0; | |
3becff3c | 684 | |
a6dd11e9 | 685 | AliTRDRecParam *recParam = AliTRDRecParam::Instance(); |
6d50f529 | 686 | if (!recParam) { |
687 | AliError("No AliTRDRecParam instance available\n"); | |
3becff3c | 688 | return; |
689 | } | |
a6dd11e9 | 690 | AliTRDcalibDB *calibration = AliTRDcalibDB::Instance(); |
6d50f529 | 691 | if (!calibration) { |
692 | AliError("No AliTRDcalibDB instance available\n"); | |
693 | return; | |
694 | } | |
11dc3a9e | 695 | |
a6dd11e9 | 696 | Double_t *inADC = new Double_t[nTimeTotal]; // ADC data before tail cancellation |
697 | Double_t *outADC = new Double_t[nTimeTotal]; // ADC data after tail cancellation | |
3becff3c | 698 | |
6d50f529 | 699 | AliDebug(1,Form("Tail cancellation (nExp = %d) for detector %d.\n" |
700 | ,recParam->GetTCnexp(),idet)); | |
701 | ||
56178ff4 | 702 | // Calibration object with chamber wise values for the gain factor |
703 | const AliTRDCalDet *calGainFactorDet = calibration->GetGainFactorDet(); | |
704 | // Calibration object with pad wise values for the gain factor | |
705 | AliTRDCalROC *calGainFactorROC = calibration->GetGainFactorROC(idet); | |
706 | // Calibration value for chamber wise gain factors | |
707 | Float_t calGainFactorDetValue = calGainFactorDet->GetValue(idet); | |
708 | ||
6d50f529 | 709 | for (iRow = 0; iRow < nRowMax; iRow++ ) { |
710 | for (iCol = 0; iCol < nColMax; iCol++ ) { | |
a6dd11e9 | 711 | |
56178ff4 | 712 | Float_t calGainFactorROCValue = calGainFactorROC->GetValue(iCol,iRow); |
713 | Double_t gain = calGainFactorDetValue | |
714 | * calGainFactorROCValue; | |
715 | ||
6d50f529 | 716 | for (iTime = 0; iTime < nTimeTotal; iTime++) { |
3becff3c | 717 | |
cb86ff6e | 718 | // |
6d50f529 | 719 | // Add gain |
cb86ff6e | 720 | // |
a6dd11e9 | 721 | inADC[iTime] = digitsIn->GetDataUnchecked(iRow,iCol,iTime); |
722 | inADC[iTime] /= gain; | |
723 | outADC[iTime] = inADC[iTime]; | |
6d50f529 | 724 | |
3becff3c | 725 | } |
726 | ||
727 | // Apply the tail cancelation via the digital filter | |
6d50f529 | 728 | if (recParam->TCOn()) { |
a305677e | 729 | DeConvExp(inADC,outADC,nTimeTotal,recParam->GetTCnexp()); |
3becff3c | 730 | } |
731 | ||
6d50f529 | 732 | for (iTime = 0; iTime < nTimeTotal; iTime++) { |
733 | ||
3becff3c | 734 | // Store the amplitude of the digit if above threshold |
a305677e | 735 | if (outADC[iTime] > ADCthreshold) { |
11dc3a9e | 736 | digitsOut->SetDataUnchecked(iRow,iCol,iTime,outADC[iTime]); |
3becff3c | 737 | } |
738 | ||
739 | } | |
740 | ||
741 | } | |
3becff3c | 742 | } |
743 | ||
744 | delete [] inADC; | |
745 | delete [] outADC; | |
746 | ||
747 | return; | |
748 | ||
749 | } | |
750 | ||
3becff3c | 751 | //_____________________________________________________________________________ |
a6dd11e9 | 752 | void AliTRDclusterizerV1::DeConvExp(Double_t *source, Double_t *target |
753 | , Int_t n, Int_t nexp) | |
3becff3c | 754 | { |
755 | // | |
6d50f529 | 756 | // Tail cancellation by deconvolution for PASA v4 TRF |
3becff3c | 757 | // |
758 | ||
759 | Double_t rates[2]; | |
760 | Double_t coefficients[2]; | |
761 | ||
6d50f529 | 762 | // Initialization (coefficient = alpha, rates = lambda) |
3becff3c | 763 | Double_t R1 = 1.0; |
764 | Double_t R2 = 1.0; | |
765 | Double_t C1 = 0.5; | |
766 | Double_t C2 = 0.5; | |
767 | ||
768 | if (nexp == 1) { // 1 Exponentials | |
769 | R1 = 1.156; | |
770 | R2 = 0.130; | |
771 | C1 = 0.066; | |
772 | C2 = 0.000; | |
773 | } | |
774 | if (nexp == 2) { // 2 Exponentials | |
775 | R1 = 1.156; | |
776 | R2 = 0.130; | |
777 | C1 = 0.114; | |
778 | C2 = 0.624; | |
779 | } | |
780 | ||
781 | coefficients[0] = C1; | |
782 | coefficients[1] = C2; | |
783 | ||
a6dd11e9 | 784 | Double_t Dt = 0.1; |
3becff3c | 785 | |
786 | rates[0] = TMath::Exp(-Dt/(R1)); | |
787 | rates[1] = TMath::Exp(-Dt/(R2)); | |
788 | ||
6d50f529 | 789 | Int_t i = 0; |
790 | Int_t k = 0; | |
3becff3c | 791 | |
6d50f529 | 792 | Double_t reminder[2]; |
793 | Double_t correction; | |
794 | Double_t result; | |
3becff3c | 795 | |
6d50f529 | 796 | // Attention: computation order is important |
797 | correction = 0.0; | |
798 | for (k = 0; k < nexp; k++) { | |
799 | reminder[k] = 0.0; | |
800 | } | |
801 | for (i = 0; i < n; i++) { | |
a6dd11e9 | 802 | result = (source[i] - correction); // No rescaling |
3becff3c | 803 | target[i] = result; |
804 | ||
6d50f529 | 805 | for (k = 0; k < nexp; k++) { |
806 | reminder[k] = rates[k] * (reminder[k] + coefficients[k] * result); | |
807 | } | |
808 | correction = 0.0; | |
809 | for (k = 0; k < nexp; k++) { | |
810 | correction += reminder[k]; | |
811 | } | |
3becff3c | 812 | } |
813 | ||
814 | } |