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92aeef15 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
16 | // $Id$ | |
17 | ||
9edefa04 | 18 | |
19 | #include <Riostream.h> | |
20 | #include <TF1.h> | |
21 | #include <TMath.h> | |
22 | #include <TRandom.h> | |
23 | #include <TString.h> | |
92aeef15 | 24 | #include "AliMUONDigitizerV3.h" |
25 | ||
4ce497c4 | 26 | #include "AliMUON.h" |
92aeef15 | 27 | #include "AliMUONCalibrationData.h" |
92aeef15 | 28 | #include "AliMUONConstants.h" |
29 | #include "AliMUONData.h" | |
4ce497c4 | 30 | #include "AliMUONDataIterator.h" |
92aeef15 | 31 | #include "AliMUONDigit.h" |
4ce497c4 | 32 | #include "AliMUONSegmentation.h" |
4ce497c4 | 33 | #include "AliMUONTriggerEfficiencyCells.h" |
4f8a3d8b | 34 | #include "AliMUONTriggerElectronics.h" |
05314992 | 35 | #include "AliMUONVCalibParam.h" |
9265505b | 36 | |
4ce497c4 | 37 | #include "AliMpDEIterator.h" |
92aeef15 | 38 | #include "AliMpDEManager.h" |
4ce497c4 | 39 | #include "AliMpIntPair.h" |
40 | #include "AliMpPad.h" | |
92aeef15 | 41 | #include "AliMpStationType.h" |
9265505b | 42 | #include "AliMpSegmentation.h" |
4ce497c4 | 43 | #include "AliMpVSegmentation.h" |
66f4c572 | 44 | #include "AliMpDEManager.h" |
9265505b | 45 | |
92aeef15 | 46 | #include "AliRun.h" |
47 | #include "AliRunDigitizer.h" | |
48 | #include "AliRunLoader.h" | |
9265505b | 49 | #include "AliLog.h" |
50 | ||
4ce497c4 | 51 | /// |
9265505b | 52 | /// \class AliMUONDigitizerV3 |
4ce497c4 | 53 | /// The digitizer is performing the transformation to go from SDigits (digits |
54 | /// w/o any electronic noise) to Digits (w/ electronic noise, and decalibration) | |
55 | /// | |
56 | /// The decalibration is performed by doing the reverse operation of the | |
57 | /// calibration, that is we do (Signal+pedestal)/gain -> ADC | |
58 | /// | |
59 | /// Note also that the digitizer takes care of merging sdigits that belongs | |
60 | /// to the same pad, either because we're merging several input sdigit files | |
61 | /// or with a single file because the sdigitizer does not merge sdigits itself | |
62 | /// (for performance reason mainly, and because anyway we know we have to do it | |
63 | /// here, at the digitization level). | |
64 | /// | |
65 | ||
66 | namespace | |
67 | { | |
68 | AliMUON* muon() | |
69 | { | |
70 | return static_cast<AliMUON*>(gAlice->GetModule("MUON")); | |
71 | } | |
4ce497c4 | 72 | } |
73 | ||
74 | const Double_t AliMUONDigitizerV3::fgkNSigmas=3; | |
75 | ||
9265505b | 76 | /// \cond CLASSIMP |
92aeef15 | 77 | ClassImp(AliMUONDigitizerV3) |
9265505b | 78 | /// \endcond |
92aeef15 | 79 | |
80 | //_____________________________________________________________________________ | |
81 | AliMUONDigitizerV3::AliMUONDigitizerV3(AliRunDigitizer* manager, | |
4ce497c4 | 82 | Bool_t generateNoisyDigits) |
92aeef15 | 83 | : AliDigitizer(manager), |
92aeef15 | 84 | fIsInitialized(kFALSE), |
85 | fOutputData(0x0), | |
86 | fCalibrationData(0x0), | |
87 | fTriggerProcessor(0x0), | |
4ce497c4 | 88 | fTriggerEfficiency(0x0), |
ccea41d4 | 89 | fFindDigitIndexTimer(), |
90 | fGenerateNoisyDigitsTimer(), | |
91 | fExecTimer(), | |
4ce497c4 | 92 | fNoiseFunction(0x0), |
93 | fGenerateNoisyDigits(generateNoisyDigits) | |
92aeef15 | 94 | { |
9265505b | 95 | /// Ctor. |
96 | ||
92aeef15 | 97 | AliDebug(1,Form("AliRunDigitizer=%p",fManager)); |
4ce497c4 | 98 | fGenerateNoisyDigitsTimer.Start(kTRUE); fGenerateNoisyDigitsTimer.Stop(); |
99 | fExecTimer.Start(kTRUE); fExecTimer.Stop(); | |
100 | fFindDigitIndexTimer.Start(kTRUE); fFindDigitIndexTimer.Stop(); | |
92aeef15 | 101 | } |
102 | ||
103 | //_____________________________________________________________________________ | |
104 | AliMUONDigitizerV3::~AliMUONDigitizerV3() | |
105 | { | |
9265505b | 106 | /// Dtor. Note we're the owner of some pointers. |
107 | ||
92aeef15 | 108 | AliDebug(1,"dtor"); |
4ce497c4 | 109 | |
92aeef15 | 110 | delete fOutputData; |
111 | delete fCalibrationData; | |
112 | delete fTriggerProcessor; | |
4ce497c4 | 113 | delete fNoiseFunction; |
114 | ||
a7b01aa5 | 115 | AliDebug(1, Form("Execution time for FindDigitIndex() : R:%.2fs C:%.2fs", |
4ce497c4 | 116 | fFindDigitIndexTimer.RealTime(),fFindDigitIndexTimer.CpuTime())); |
117 | if ( fGenerateNoisyDigits ) | |
118 | { | |
a7b01aa5 | 119 | AliDebug(1, Form("Execution time for GenerateNoisyDigits() : R:%.2fs C:%.2fs", |
4ce497c4 | 120 | fGenerateNoisyDigitsTimer.RealTime(), |
121 | fGenerateNoisyDigitsTimer.CpuTime())); | |
122 | } | |
a7b01aa5 | 123 | AliDebug(1, Form("Execution time for Exec() : R:%.2fs C:%.2fs", |
4ce497c4 | 124 | fExecTimer.RealTime(),fExecTimer.CpuTime())); |
125 | ||
92aeef15 | 126 | } |
127 | ||
128 | //_____________________________________________________________________________ | |
129 | void | |
4ce497c4 | 130 | AliMUONDigitizerV3::ApplyResponseToTrackerDigit(AliMUONDigit& digit, Bool_t addNoise) |
92aeef15 | 131 | { |
9265505b | 132 | /// For tracking digits, starting from an ideal digit's charge, we : |
133 | /// | |
134 | /// - add some noise (thus leading to a realistic charge), if requested to do so | |
135 | /// - divide by a gain (thus decalibrating the digit) | |
136 | /// - add a pedestal (thus decalibrating the digit) | |
137 | /// - sets the signal to zero if below 3*sigma of the noise | |
59b91539 | 138 | |
4ce497c4 | 139 | static const Int_t kMaxADC = (1<<12)-1; // We code the charge on a 12 bits ADC. |
59b91539 | 140 | |
4ce497c4 | 141 | Float_t signal = digit.Signal(); |
59b91539 | 142 | |
143 | if ( !addNoise ) | |
144 | { | |
145 | digit.SetADC(TMath::Nint(signal)); | |
146 | return; | |
147 | } | |
92aeef15 | 148 | |
4ce497c4 | 149 | Int_t detElemId = digit.DetElemId(); |
92aeef15 | 150 | |
151 | Int_t manuId = digit.ManuId(); | |
152 | Int_t manuChannel = digit.ManuChannel(); | |
153 | ||
4ce497c4 | 154 | AliMUONVCalibParam* pedestal = fCalibrationData->Pedestals(detElemId,manuId); |
92aeef15 | 155 | if (!pedestal) |
59b91539 | 156 | { |
157 | AliFatal(Form("Could not get pedestal for DE=%d manuId=%d", | |
158 | detElemId,manuId)); | |
159 | } | |
05314992 | 160 | Float_t pedestalMean = pedestal->ValueAsFloat(manuChannel,0); |
161 | Float_t pedestalSigma = pedestal->ValueAsFloat(manuChannel,1); | |
59b91539 | 162 | |
4ce497c4 | 163 | AliMUONVCalibParam* gain = fCalibrationData->Gains(detElemId,manuId); |
92aeef15 | 164 | if (!gain) |
59b91539 | 165 | { |
166 | AliFatal(Form("Could not get gain for DE=%d manuId=%d", | |
167 | detElemId,manuId)); | |
168 | } | |
05314992 | 169 | Float_t gainMean = gain->ValueAsFloat(manuChannel,0); |
4ce497c4 | 170 | |
59b91539 | 171 | Float_t adcNoise = gRandom->Gaus(0.0,pedestalSigma); |
172 | ||
92aeef15 | 173 | Int_t adc; |
59b91539 | 174 | |
05314992 | 175 | if ( gainMean < 1E-6 ) |
92aeef15 | 176 | { |
59b91539 | 177 | AliError(Form("Got a too small gain %e for DE=%d manuId=%d manuChannel=%d. " |
178 | "Setting signal to 0.", | |
179 | gainMean,detElemId,manuId,manuChannel)); | |
92aeef15 | 180 | adc = 0; |
181 | } | |
59b91539 | 182 | else |
183 | { | |
184 | adc = TMath::Nint( signal / gainMean + pedestalMean + adcNoise);/// | |
185 | ||
186 | if ( adc <= pedestalMean + fgkNSigmas*pedestalSigma ) | |
187 | { | |
188 | adc = 0; | |
189 | } | |
190 | } | |
191 | ||
05314992 | 192 | // be sure we stick to 12 bits. |
4ce497c4 | 193 | if ( adc > kMaxADC ) |
59b91539 | 194 | { |
195 | adc = kMaxADC; | |
196 | } | |
197 | ||
92aeef15 | 198 | digit.SetPhysicsSignal(TMath::Nint(signal)); |
199 | digit.SetSignal(adc); | |
200 | digit.SetADC(adc); | |
201 | } | |
202 | ||
4ce497c4 | 203 | //_____________________________________________________________________________ |
204 | void | |
205 | AliMUONDigitizerV3::ApplyResponseToTriggerDigit(AliMUONDigit& digit, | |
206 | AliMUONData* data) | |
207 | { | |
9265505b | 208 | /// \todo add comment |
209 | ||
4ce497c4 | 210 | if ( !fTriggerEfficiency ) return; |
211 | ||
212 | AliMUONDigit* correspondingDigit = FindCorrespondingDigit(digit,data); | |
213 | ||
a0dc51a6 | 214 | if(!correspondingDigit)return;//reject bad correspondences |
215 | ||
4ce497c4 | 216 | Int_t detElemId = digit.DetElemId(); |
9265505b | 217 | |
218 | AliMpSegmentation* segmentation = AliMpSegmentation::Instance(); | |
4ce497c4 | 219 | const AliMpVSegmentation* segment[2] = |
220 | { | |
9265505b | 221 | segmentation->GetMpSegmentation(detElemId,digit.Cathode()), |
222 | segmentation->GetMpSegmentation(detElemId,correspondingDigit->Cathode()) | |
4ce497c4 | 223 | }; |
224 | ||
225 | AliMpPad pad[2] = | |
226 | { | |
227 | segment[0]->PadByIndices(AliMpIntPair(digit.PadX(),digit.PadY()),kTRUE), | |
228 | segment[1]->PadByIndices(AliMpIntPair(correspondingDigit->PadX(),correspondingDigit->PadY()),kTRUE) | |
229 | }; | |
230 | ||
081d3361 | 231 | Int_t p0(1); |
232 | if (digit.Cathode()==0)p0=0; | |
233 | ||
234 | AliMpIntPair location = pad[p0].GetLocation(0); | |
235 | Int_t nboard = location.GetFirst(); | |
4ce497c4 | 236 | |
4ce497c4 | 237 | Bool_t isTrig[2]; |
081d3361 | 238 | |
239 | fTriggerEfficiency->IsTriggered(detElemId, nboard-1, | |
4ce497c4 | 240 | isTrig[0], isTrig[1]); |
081d3361 | 241 | |
4ce497c4 | 242 | if (!isTrig[digit.Cathode()]) |
243 | { | |
244 | digit.SetSignal(0); | |
245 | } | |
246 | ||
247 | if ( &digit != correspondingDigit ) | |
248 | { | |
249 | if (!isTrig[correspondingDigit->Cathode()]) | |
250 | { | |
251 | correspondingDigit->SetSignal(0); | |
252 | } | |
253 | } | |
254 | } | |
255 | ||
92aeef15 | 256 | //_____________________________________________________________________________ |
257 | void | |
258 | AliMUONDigitizerV3::ApplyResponse() | |
259 | { | |
9265505b | 260 | /// Loop over all chamber digits, and apply the response to them |
261 | /// Note that this method may remove digits. | |
262 | ||
4ce497c4 | 263 | const Bool_t kAddNoise = kTRUE; |
264 | ||
92aeef15 | 265 | for ( Int_t ich = 0; ich < AliMUONConstants::NCh(); ++ich ) |
4ce497c4 | 266 | { |
92aeef15 | 267 | TClonesArray* digits = fOutputData->Digits(ich); |
268 | Int_t n = digits->GetEntriesFast(); | |
4ce497c4 | 269 | Bool_t trackingChamber = ( ich < AliMUONConstants::NTrackingCh() ); |
92aeef15 | 270 | for ( Int_t i = 0; i < n; ++i ) |
271 | { | |
272 | AliMUONDigit* d = static_cast<AliMUONDigit*>(digits->UncheckedAt(i)); | |
4ce497c4 | 273 | if ( trackingChamber ) |
274 | { | |
275 | ApplyResponseToTrackerDigit(*d,kAddNoise); | |
276 | } | |
277 | else | |
278 | { | |
279 | ApplyResponseToTriggerDigit(*d,fOutputData); | |
280 | } | |
92aeef15 | 281 | if ( d->Signal() <= 0 ) |
282 | { | |
283 | digits->RemoveAt(i); | |
284 | } | |
285 | } | |
05314992 | 286 | digits->Compress(); |
92aeef15 | 287 | } |
4ce497c4 | 288 | |
289 | // The version below, using iterator, does not yet work (as the iterator | |
290 | // assumes it is reading digits from the tree, while in this case it's | |
291 | // writing...) | |
292 | // | |
293 | // AliMUONDigit* digit(0x0); | |
294 | // | |
295 | // // First loop on tracker digits | |
296 | // AliMUONDataIterator tracker(fOutputData,"D",AliMUONDataIterator::kTrackingChambers); | |
297 | // | |
298 | // while ( ( digit = static_cast<AliMUONDigit*>(tracker.Next()) ) ) | |
299 | // { | |
300 | // ApplyResponseToTrackerDigit(*digit); | |
301 | // if ( digit->Signal() <= 0 ) | |
302 | // { | |
303 | // tracker.Remove(); | |
304 | // } | |
305 | // | |
306 | // } | |
307 | // | |
308 | // // Then loop on trigger digits | |
309 | // AliMUONDataIterator trigger(fOutputData,"D",AliMUONDataIterator::kTriggerChambers); | |
310 | // | |
311 | // while ( ( digit = static_cast<AliMUONDigit*>(trigger.Next()) ) ) | |
312 | // { | |
313 | // ApplyResponseToTriggerDigit(*digit,fOutputData); | |
314 | // if ( digit->Signal() <= 0 ) | |
315 | // { | |
316 | // trigger.Remove(); | |
317 | // } | |
318 | // } | |
92aeef15 | 319 | } |
320 | ||
321 | //_____________________________________________________________________________ | |
322 | void | |
323 | AliMUONDigitizerV3::AddOrUpdateDigit(TClonesArray& array, | |
324 | const AliMUONDigit& digit) | |
325 | { | |
9265505b | 326 | /// Add or update a digit, depending on whether there's already a digit |
327 | /// for the corresponding channel. | |
328 | ||
92aeef15 | 329 | Int_t ix = FindDigitIndex(array,digit); |
330 | ||
331 | if (ix>=0) | |
332 | { | |
333 | AliMUONDigit* d = static_cast<AliMUONDigit*>(array.UncheckedAt(ix)); | |
334 | Bool_t ok = MergeDigits(digit,*d); | |
335 | if (!ok) | |
336 | { | |
337 | AliError("Digits are not mergeable !"); | |
338 | } | |
92aeef15 | 339 | } |
340 | else | |
341 | { | |
342 | ix = array.GetLast() + 1; | |
343 | new(array[ix]) AliMUONDigit(digit); | |
344 | } | |
345 | ||
346 | } | |
347 | ||
348 | //_____________________________________________________________________________ | |
349 | void | |
350 | AliMUONDigitizerV3::Exec(Option_t*) | |
351 | { | |
9265505b | 352 | /// Main method. |
353 | /// We first loop over input files, and merge the sdigits we found there. | |
354 | /// Second, we digitize all the resulting sdigits | |
355 | /// Then we generate noise-only digits (for tracker only) | |
356 | /// And we finally generate the trigger outputs. | |
4ce497c4 | 357 | |
92aeef15 | 358 | AliDebug(1, "Running digitizer."); |
359 | ||
360 | if ( fManager->GetNinputs() == 0 ) | |
361 | { | |
362 | AliWarning("No input set. Nothing to do."); | |
363 | return; | |
364 | } | |
365 | ||
366 | if ( !fIsInitialized ) | |
367 | { | |
368 | AliError("Not initialized. Cannot perform the work. Sorry"); | |
369 | return; | |
370 | } | |
371 | ||
4ce497c4 | 372 | fExecTimer.Start(kFALSE); |
373 | ||
92aeef15 | 374 | Int_t nInputFiles = fManager->GetNinputs(); |
375 | ||
376 | if ( fOutputData->TreeD() == 0x0 ) | |
377 | { | |
378 | AliDebug(1,"Calling MakeDigitsContainer"); | |
379 | fOutputData->GetLoader()->MakeDigitsContainer(); | |
380 | } | |
381 | fOutputData->MakeBranch("D,GLT"); | |
382 | fOutputData->SetTreeAddress("D,GLT"); | |
383 | ||
384 | // Loop over all the input files, and merge the sdigits found in those | |
385 | // files. | |
386 | for ( Int_t iFile = 0; iFile < nInputFiles; ++iFile ) | |
387 | { | |
388 | AliMUONData* inputData = GetDataAccess(fManager->GetInputFolderName(iFile)); | |
389 | if (!inputData) | |
390 | { | |
391 | AliFatal(Form("Could not get access to input file #%d",iFile)); | |
392 | } | |
05314992 | 393 | |
92aeef15 | 394 | inputData->GetLoader()->LoadSDigits("READ"); |
92aeef15 | 395 | inputData->SetTreeAddress("S"); |
396 | inputData->GetSDigits(); | |
05314992 | 397 | |
398 | MergeWithSDigits(*fOutputData,*inputData,fManager->GetMask(iFile)); | |
399 | ||
92aeef15 | 400 | inputData->ResetSDigits(); |
401 | inputData->GetLoader()->UnloadSDigits(); | |
402 | delete inputData; | |
403 | } | |
404 | ||
405 | // At this point, we do have digit arrays (one per chamber) which contains | |
406 | // the merging of all the sdigits of the input file(s). | |
407 | // We now massage them to apply the detector response, i.e. this | |
408 | // is here that we do the "digitization" work. | |
409 | ||
410 | ApplyResponse(); | |
4ce497c4 | 411 | |
412 | if ( fGenerateNoisyDigits ) | |
413 | { | |
414 | // Generate noise-only digits for tracker. | |
415 | GenerateNoisyDigits(); | |
416 | } | |
417 | ||
92aeef15 | 418 | // We generate the global and local trigger decisions. |
419 | fTriggerProcessor->ExecuteTask(); | |
420 | ||
421 | // Fill the output treeD | |
422 | fOutputData->Fill("D,GLT"); | |
423 | ||
424 | // Write to the output tree(D). | |
425 | // Please note that as GlobalTrigger, LocalTrigger and Digits are in the same | |
426 | // tree (=TreeD) in different branches, this WriteDigits in fact writes all of | |
427 | // the 3 branches. | |
428 | fOutputData->GetLoader()->WriteDigits("OVERWRITE"); | |
429 | ||
430 | // Finally, we clean up after ourselves. | |
431 | fOutputData->ResetDigits(); | |
432 | fOutputData->ResetTrigger(); | |
433 | fOutputData->GetLoader()->UnloadDigits(); | |
4ce497c4 | 434 | |
435 | fExecTimer.Stop(); | |
92aeef15 | 436 | } |
437 | ||
4ce497c4 | 438 | //_____________________________________________________________________________ |
439 | AliMUONDigit* | |
440 | AliMUONDigitizerV3::FindCorrespondingDigit(AliMUONDigit& digit, | |
85fec35d | 441 | AliMUONData* data) const |
4ce497c4 | 442 | { |
9265505b | 443 | /// \todo add comment |
444 | ||
a0dc51a6 | 445 | AliMUONDataIterator it(data,"D",AliMUONDataIterator::kTriggerChambers); |
4ce497c4 | 446 | AliMUONDigit* cd; |
a0dc51a6 | 447 | |
448 | for(;;){ | |
449 | cd = static_cast<AliMUONDigit*>(it.Next()); | |
450 | if(!cd)continue; | |
451 | if (cd->DetElemId() == digit.DetElemId() && | |
452 | cd->PadX() == digit.PadX() && | |
453 | cd->PadY() == digit.PadY() && | |
454 | cd->Cathode() == digit.Cathode()){ | |
455 | break; | |
456 | } | |
457 | } | |
458 | //The corresponding digit is searched only forward in the AliMUONData. | |
459 | //In this way when the first digit of the couple is given, the second digit is found and the efficiency is applied to both. | |
460 | //Afterwards, when the second digit of the couple is given the first one is not found and hence efficiency is not applied again | |
4ce497c4 | 461 | |
462 | while ( ( cd = static_cast<AliMUONDigit*>(it.Next()) ) ) | |
463 | { | |
a0dc51a6 | 464 | if(!cd)continue;//avoid problems when 1 digit is removed |
4ce497c4 | 465 | if ( cd->DetElemId() == digit.DetElemId() && |
466 | cd->Hit() == digit.Hit() && | |
467 | cd->Cathode() != digit.Cathode() ) | |
468 | { | |
469 | return cd; | |
470 | } | |
471 | } | |
472 | return 0x0; | |
473 | } | |
474 | ||
475 | ||
92aeef15 | 476 | //_____________________________________________________________________________ |
477 | Int_t | |
4ce497c4 | 478 | AliMUONDigitizerV3::FindDigitIndex(TClonesArray& array, |
479 | const AliMUONDigit& digit) const | |
92aeef15 | 480 | { |
9265505b | 481 | /// Return the index of digit within array, if that digit is there, |
482 | /// otherwise returns -1 | |
483 | /// | |
484 | /// \todo FIXME: this is of course not the best implementation you can think of. | |
485 | /// Reconsider the use of hit/digit map... ? (but be sure it's needed!) | |
4ce497c4 | 486 | |
487 | fFindDigitIndexTimer.Start(kFALSE); | |
488 | ||
92aeef15 | 489 | Int_t n = array.GetEntriesFast(); |
490 | for ( Int_t i = 0; i < n; ++i ) | |
491 | { | |
492 | AliMUONDigit* d = static_cast<AliMUONDigit*>(array.UncheckedAt(i)); | |
493 | if ( d->DetElemId() == digit.DetElemId() && | |
494 | d->PadX() == digit.PadX() && | |
495 | d->PadY() == digit.PadY() && | |
496 | d->Cathode() == digit.Cathode() ) | |
497 | { | |
4ce497c4 | 498 | fFindDigitIndexTimer.Stop(); |
92aeef15 | 499 | return i; |
500 | } | |
501 | } | |
4ce497c4 | 502 | fFindDigitIndexTimer.Stop(); |
92aeef15 | 503 | return -1; |
504 | } | |
505 | ||
4ce497c4 | 506 | //_____________________________________________________________________________ |
507 | void | |
508 | AliMUONDigitizerV3::GenerateNoisyDigits() | |
509 | { | |
9265505b | 510 | /// According to a given probability, generate digits that |
511 | /// have a signal above the noise cut (ped+n*sigma_ped), i.e. digits | |
512 | /// that are "only noise". | |
4ce497c4 | 513 | |
514 | if ( !fNoiseFunction ) | |
515 | { | |
516 | fNoiseFunction = new TF1("AliMUONDigitizerV3::fNoiseFunction","gaus", | |
517 | fgkNSigmas,fgkNSigmas*10); | |
518 | ||
519 | fNoiseFunction->SetParameters(1,0,1); | |
520 | } | |
521 | ||
522 | fGenerateNoisyDigitsTimer.Start(kFALSE); | |
523 | ||
524 | for ( Int_t i = 0; i < AliMUONConstants::NTrackingCh(); ++i ) | |
525 | { | |
526 | AliMpDEIterator it; | |
527 | ||
528 | it.First(i); | |
529 | ||
530 | while ( !it.IsDone() ) | |
531 | { | |
532 | for ( Int_t cathode = 0; cathode < 2; ++cathode ) | |
533 | { | |
534 | GenerateNoisyDigitsForOneCathode(it.CurrentDE(),cathode); | |
535 | } | |
536 | it.Next(); | |
537 | } | |
538 | } | |
539 | ||
540 | fGenerateNoisyDigitsTimer.Stop(); | |
541 | } | |
542 | ||
543 | //_____________________________________________________________________________ | |
544 | void | |
545 | AliMUONDigitizerV3::GenerateNoisyDigitsForOneCathode(Int_t detElemId, Int_t cathode) | |
546 | { | |
9265505b | 547 | /// Generate noise-only digits for one cathode of one detection element. |
548 | /// Called by GenerateNoisyDigits() | |
4ce497c4 | 549 | |
66f4c572 | 550 | Int_t chamberId = AliMpDEManager::GetChamberId(detElemId); |
551 | TClonesArray* digits = fOutputData->Digits(chamberId); | |
4ce497c4 | 552 | |
9265505b | 553 | const AliMpVSegmentation* seg |
554 | = AliMpSegmentation::Instance()->GetMpSegmentation(detElemId,cathode); | |
4ce497c4 | 555 | Int_t nofPads = seg->NofPads(); |
556 | ||
557 | Int_t maxIx = seg->MaxPadIndexX(); | |
558 | Int_t maxIy = seg->MaxPadIndexY(); | |
559 | ||
cdea095e | 560 | static const Double_t kProbToBeOutsideNsigmas = TMath::Erfc(fgkNSigmas/TMath::Sqrt(2.0)) / 2. ; |
4ce497c4 | 561 | |
84aac932 | 562 | Int_t nofNoisyPads = TMath::Nint(kProbToBeOutsideNsigmas*nofPads); |
4ce497c4 | 563 | if ( !nofNoisyPads ) return; |
564 | ||
565 | nofNoisyPads = | |
566 | TMath::Nint(gRandom->Gaus(nofNoisyPads, | |
567 | nofNoisyPads/TMath::Sqrt(nofNoisyPads))); | |
568 | ||
569 | AliDebug(3,Form("DE %d cath %d nofNoisyPads %d",detElemId,cathode,nofNoisyPads)); | |
570 | ||
571 | for ( Int_t i = 0; i < nofNoisyPads; ++i ) | |
572 | { | |
573 | Int_t ix(-1); | |
574 | Int_t iy(-1); | |
575 | do { | |
576 | ix = gRandom->Integer(maxIx+1); | |
577 | iy = gRandom->Integer(maxIy+1); | |
578 | } while ( !seg->HasPad(AliMpIntPair(ix,iy)) ); | |
579 | AliMUONDigit d; | |
580 | d.SetDetElemId(detElemId); | |
581 | d.SetCathode(cathode); | |
582 | d.SetPadX(ix); | |
583 | d.SetPadY(iy); | |
584 | if ( FindDigitIndex(*digits,d) >= 0 ) | |
585 | { | |
586 | // this digit is already there, and not noise-only, we simply skip it | |
587 | continue; | |
588 | } | |
589 | AliMpPad pad = seg->PadByIndices(AliMpIntPair(ix,iy)); | |
590 | Int_t manuId = pad.GetLocation().GetFirst(); | |
591 | Int_t manuChannel = pad.GetLocation().GetSecond(); | |
592 | ||
593 | d.SetElectronics(manuId,manuChannel); | |
594 | ||
595 | AliMUONVCalibParam* pedestals = fCalibrationData->Pedestals(detElemId,manuId); | |
596 | ||
597 | Float_t pedestalMean = pedestals->ValueAsFloat(manuChannel,0); | |
598 | Float_t pedestalSigma = pedestals->ValueAsFloat(manuChannel,1); | |
599 | ||
600 | Double_t ped = fNoiseFunction->GetRandom()*pedestalSigma; | |
59b91539 | 601 | |
4ce497c4 | 602 | d.SetSignal(TMath::Nint(ped+pedestalMean+0.5)); |
59b91539 | 603 | d.SetPhysicsSignal(0); |
4ce497c4 | 604 | d.NoiseOnly(kTRUE); |
605 | AliDebug(3,Form("Adding a pure noise digit :")); | |
606 | StdoutToAliDebug(3,cout << "Before Response: " << endl; | |
607 | d.Print();); | |
608 | ApplyResponseToTrackerDigit(d,kFALSE); | |
609 | if ( d.Signal() > 0 ) | |
610 | { | |
611 | AddOrUpdateDigit(*digits,d); | |
612 | } | |
613 | else | |
614 | { | |
615 | AliError("Pure noise below threshold. This should not happen. Not adding " | |
616 | "this digit."); | |
617 | } | |
618 | StdoutToAliDebug(3,cout << "After Response: " << endl; | |
619 | d.Print();); | |
620 | } | |
621 | } | |
622 | ||
92aeef15 | 623 | //_____________________________________________________________________________ |
624 | AliMUONData* | |
625 | AliMUONDigitizerV3::GetDataAccess(const TString& folderName) | |
626 | { | |
9265505b | 627 | /// Create an AliMUONData to deal with data found in folderName. |
628 | ||
92aeef15 | 629 | AliDebug(1,Form("Getting access to folder %s",folderName.Data())); |
630 | AliRunLoader* runLoader = AliRunLoader::GetRunLoader(folderName); | |
631 | if (!runLoader) | |
632 | { | |
633 | AliError(Form("Could not get RunLoader from folder %s",folderName.Data())); | |
634 | return 0x0; | |
635 | } | |
636 | AliLoader* loader = static_cast<AliLoader*>(runLoader->GetLoader("MUONLoader")); | |
637 | if (!loader) | |
638 | { | |
639 | AliError(Form("Could not get MuonLoader from folder %s",folderName.Data())); | |
640 | return 0x0; | |
641 | } | |
642 | AliMUONData* data = new AliMUONData(loader,"MUON","MUONDataForDigitOutput"); | |
643 | AliDebug(1,Form("AliMUONData=%p loader=%p",data,loader)); | |
644 | return data; | |
645 | } | |
646 | ||
647 | //_____________________________________________________________________________ | |
648 | Bool_t | |
649 | AliMUONDigitizerV3::Init() | |
650 | { | |
9265505b | 651 | /// Initialization of the TTask : |
652 | /// a) set the outputData pointer | |
653 | /// b) create the calibrationData, according to run number | |
654 | /// c) create the trigger processing task | |
655 | ||
92aeef15 | 656 | AliDebug(1,""); |
657 | ||
658 | if ( fIsInitialized ) | |
659 | { | |
660 | AliError("Object already initialized."); | |
661 | return kFALSE; | |
662 | } | |
663 | ||
664 | if (!fManager) | |
665 | { | |
666 | AliError("fManager is null !"); | |
667 | return kFALSE; | |
668 | } | |
669 | ||
670 | fOutputData = GetDataAccess(fManager->GetOutputFolderName()); | |
671 | if (!fOutputData) | |
672 | { | |
673 | AliError("Can not perform digitization. I'm sorry"); | |
674 | return kFALSE; | |
675 | } | |
676 | AliDebug(1,Form("fOutputData=%p",fOutputData)); | |
677 | ||
678 | AliRunLoader* runLoader = fOutputData->GetLoader()->GetRunLoader(); | |
679 | AliRun* galice = runLoader->GetAliRun(); | |
680 | Int_t runnumber = galice->GetRunNumber(); | |
681 | ||
682 | fCalibrationData = new AliMUONCalibrationData(runnumber); | |
683 | ||
eb5d708c | 684 | fTriggerProcessor = new AliMUONTriggerElectronics(fOutputData,fCalibrationData); |
4ce497c4 | 685 | |
afb3ccf0 | 686 | if ( muon()->GetTriggerEffCells() ) |
4ce497c4 | 687 | { |
688 | fTriggerEfficiency = fCalibrationData->TriggerEfficiency(); | |
689 | if ( fTriggerEfficiency ) | |
690 | { | |
a7b01aa5 | 691 | AliDebug(1, "Will apply trigger efficiency"); |
4ce497c4 | 692 | } |
693 | else | |
694 | { | |
695 | AliError("I was requested to apply trigger efficiency, but I could " | |
696 | "not get it !"); | |
697 | } | |
698 | } | |
699 | ||
700 | if ( fGenerateNoisyDigits ) | |
701 | { | |
a7b01aa5 | 702 | AliDebug(1, "Will generate noise-only digits for tracker"); |
4ce497c4 | 703 | } |
704 | ||
92aeef15 | 705 | fIsInitialized = kTRUE; |
706 | return kTRUE; | |
707 | } | |
708 | ||
709 | //_____________________________________________________________________________ | |
710 | Bool_t | |
05314992 | 711 | AliMUONDigitizerV3::MergeDigits(const AliMUONDigit& src, |
712 | AliMUONDigit& srcAndDest) | |
92aeef15 | 713 | { |
9265505b | 714 | /// Merge 2 digits (src and srcAndDest) into srcAndDest. |
715 | ||
92aeef15 | 716 | AliDebug(1,"Merging the following digits:"); |
05314992 | 717 | StdoutToAliDebug(1,src.Print("tracks");); |
718 | StdoutToAliDebug(1,srcAndDest.Print("tracks");); | |
92aeef15 | 719 | |
720 | Bool_t check = ( src.DetElemId() == srcAndDest.DetElemId() && | |
721 | src.PadX() == srcAndDest.PadX() && | |
722 | src.PadY() == srcAndDest.PadY() && | |
723 | src.Cathode() == srcAndDest.Cathode() ); | |
724 | if (!check) | |
725 | { | |
726 | return kFALSE; | |
727 | } | |
728 | ||
92aeef15 | 729 | srcAndDest.AddSignal(src.Signal()); |
730 | srcAndDest.AddPhysicsSignal(src.Physics()); | |
05314992 | 731 | for ( Int_t i = 0; i < src.Ntracks(); ++i ) |
732 | { | |
733 | srcAndDest.AddTrack(src.Track(i),src.TrackCharge(i)); | |
734 | } | |
735 | StdoutToAliDebug(1,cout << "result:"; srcAndDest.Print("tracks");); | |
92aeef15 | 736 | return kTRUE; |
737 | } | |
738 | ||
739 | //_____________________________________________________________________________ | |
740 | void | |
741 | AliMUONDigitizerV3::MergeWithSDigits(AliMUONData& outputData, | |
05314992 | 742 | const AliMUONData& inputData, Int_t mask) |
92aeef15 | 743 | { |
9265505b | 744 | /// Merge the sdigits in inputData with the digits already present in outputData |
745 | ||
92aeef15 | 746 | AliDebug(1,""); |
747 | ||
748 | for ( Int_t ich = 0; ich < AliMUONConstants::NCh(); ++ich ) | |
749 | { | |
750 | TClonesArray* iDigits = inputData.SDigits(ich); | |
751 | TClonesArray* oDigits = outputData.Digits(ich); | |
752 | if (!iDigits) | |
753 | { | |
754 | AliError(Form("Could not get sdigits for ich=%d",ich)); | |
755 | return; | |
756 | } | |
757 | Int_t nSDigits = iDigits->GetEntriesFast(); | |
758 | for ( Int_t k = 0; k < nSDigits; ++k ) | |
759 | { | |
760 | AliMUONDigit* sdigit = static_cast<AliMUONDigit*>(iDigits->UncheckedAt(k)); | |
92aeef15 | 761 | if (!sdigit) |
762 | { | |
763 | AliError(Form("Could not get sdigit for ich=%d and k=%d",ich,k)); | |
764 | } | |
765 | else | |
766 | { | |
05314992 | 767 | // Update the track references using the mask. |
768 | // FIXME: this is dirty, for backward compatibility only. | |
769 | // Should re-design all this way of keeping track of MC information... | |
770 | if ( mask ) sdigit->PatchTracks(mask); | |
771 | // Then add or update the digit to the output. | |
92aeef15 | 772 | AddOrUpdateDigit(*oDigits,*sdigit); |
773 | } | |
9265505b | 774 | } |
92aeef15 | 775 | } |
776 | } |