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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 | ||
18 | #include "AliMUONDigitizerV3.h" | |
19 | ||
20 | #include "AliLog.h" | |
21 | #include "AliMUONCalibrationData.h" | |
22 | #include "AliMUONChamber.h" | |
23 | #include "AliMUONConstants.h" | |
24 | #include "AliMUONData.h" | |
25 | #include "AliMUONDigit.h" | |
26 | #include "AliMUONTriggerDecisionV1.h" | |
4f8a3d8b | 27 | #include "AliMUONTriggerElectronics.h" |
05314992 | 28 | #include "AliMUONVCalibParam.h" |
92aeef15 | 29 | #include "AliMpDEManager.h" |
30 | #include "AliMpStationType.h" | |
31 | #include "AliRun.h" | |
32 | #include "AliRunDigitizer.h" | |
33 | #include "AliRunLoader.h" | |
34 | #include "Riostream.h" | |
35 | #include "TRandom.h" | |
36 | #include "TString.h" | |
37 | ||
38 | ClassImp(AliMUONDigitizerV3) | |
39 | ||
40 | //_____________________________________________________________________________ | |
41 | AliMUONDigitizerV3::AliMUONDigitizerV3(AliRunDigitizer* manager, | |
42 | ETriggerCodeVersion triggerCodeVersion) | |
43 | : AliDigitizer(manager), | |
92aeef15 | 44 | fIsInitialized(kFALSE), |
45 | fOutputData(0x0), | |
46 | fCalibrationData(0x0), | |
47 | fTriggerProcessor(0x0), | |
48 | fTriggerCodeVersion(triggerCodeVersion) | |
49 | { | |
05314992 | 50 | // |
51 | // Ctor. | |
52 | // | |
92aeef15 | 53 | AliDebug(1,Form("AliRunDigitizer=%p",fManager)); |
54 | } | |
55 | ||
56 | //_____________________________________________________________________________ | |
57 | AliMUONDigitizerV3::~AliMUONDigitizerV3() | |
58 | { | |
05314992 | 59 | // |
60 | // Dtor. Note we're the owner of some pointers. | |
61 | // | |
92aeef15 | 62 | AliDebug(1,"dtor"); |
63 | delete fOutputData; | |
64 | delete fCalibrationData; | |
65 | delete fTriggerProcessor; | |
66 | } | |
67 | ||
68 | //_____________________________________________________________________________ | |
69 | void | |
70 | AliMUONDigitizerV3::ApplyResponseToDigit(AliMUONDigit& digit) | |
71 | { | |
05314992 | 72 | // For trigger digits, simply does nothing. |
92aeef15 | 73 | // |
74 | // For tracking digits, starting from an ideal digit's charge, we : | |
75 | // | |
76 | // - add some noise (thus leading to a realistic charge) | |
77 | // - divide by a gain (thus decalibrating the digit) | |
78 | // - add a pedestal (thus decalibrating the digit) | |
05314992 | 79 | // - sets the signal to zero if below 3*sigma of the noise |
92aeef15 | 80 | // |
81 | ||
05314992 | 82 | static const Int_t MAXADC = (1<<12)-1; // We code the charge on a 12 bits ADC. |
83 | ||
92aeef15 | 84 | Int_t detElemId = digit.DetElemId(); |
85 | AliMpStationType stationType = AliMpDEManager::GetStationType(detElemId); | |
86 | if ( stationType == kStationTrigger ) | |
87 | { | |
92aeef15 | 88 | return; |
89 | } | |
90 | ||
91 | // The following is for tracking digits only. | |
92 | ||
93 | Int_t manuId = digit.ManuId(); | |
94 | Int_t manuChannel = digit.ManuChannel(); | |
95 | ||
05314992 | 96 | AliMUONVCalibParam* pedestal = fCalibrationData->Pedestal(detElemId,manuId); |
92aeef15 | 97 | if (!pedestal) |
98 | { | |
05314992 | 99 | AliFatal(Form("Could not get pedestal for DE=%d manuId=%d", |
100 | detElemId,manuId)); | |
92aeef15 | 101 | } |
05314992 | 102 | Float_t pedestalMean = pedestal->ValueAsFloat(manuChannel,0); |
103 | Float_t pedestalSigma = pedestal->ValueAsFloat(manuChannel,1); | |
92aeef15 | 104 | |
05314992 | 105 | Float_t adc_noise = gRandom->Gaus(0.0,pedestalSigma); |
106 | ||
107 | AliMUONVCalibParam* gain = fCalibrationData->Gain(detElemId,manuId); | |
92aeef15 | 108 | if (!gain) |
109 | { | |
05314992 | 110 | AliFatal(Form("Could not get gain for DE=%d manuId=%d", |
111 | detElemId,manuId)); | |
92aeef15 | 112 | } |
113 | ||
05314992 | 114 | Float_t gainMean = gain->ValueAsFloat(manuChannel,0); |
115 | Float_t signal_noise = adc_noise*gainMean; | |
92aeef15 | 116 | |
117 | Float_t signal = digit.Signal() + signal_noise; | |
118 | Int_t adc; | |
119 | ||
05314992 | 120 | if ( gainMean < 1E-6 ) |
92aeef15 | 121 | { |
05314992 | 122 | AliError(Form("Got a too small gain %e for DE=%d manuId=%d manuChannel=%d. " |
123 | "Setting signal to 0.", | |
124 | gainMean,detElemId,manuId,manuChannel)); | |
125 | adc = 0; | |
92aeef15 | 126 | } |
127 | else | |
128 | { | |
05314992 | 129 | adc = TMath::Nint( signal / gainMean + pedestalMean ); |
92aeef15 | 130 | |
05314992 | 131 | if ( adc <= pedestalMean + 3.0*pedestalSigma ) |
92aeef15 | 132 | { |
133 | adc = 0; | |
134 | } | |
135 | } | |
05314992 | 136 | // be sure we stick to 12 bits. |
137 | if ( adc > MAXADC ) | |
138 | { | |
139 | adc = MAXADC; | |
140 | } | |
92aeef15 | 141 | digit.SetPhysicsSignal(TMath::Nint(signal)); |
142 | digit.SetSignal(adc); | |
143 | digit.SetADC(adc); | |
144 | } | |
145 | ||
146 | //_____________________________________________________________________________ | |
147 | void | |
148 | AliMUONDigitizerV3::ApplyResponse() | |
149 | { | |
05314992 | 150 | // |
151 | // Loop over all chamber digits, and apply the response to them | |
152 | // Note that this method may remove digits. | |
153 | // | |
92aeef15 | 154 | for ( Int_t ich = 0; ich < AliMUONConstants::NCh(); ++ich ) |
155 | { | |
156 | TClonesArray* digits = fOutputData->Digits(ich); | |
157 | Int_t n = digits->GetEntriesFast(); | |
158 | for ( Int_t i = 0; i < n; ++i ) | |
159 | { | |
160 | AliMUONDigit* d = static_cast<AliMUONDigit*>(digits->UncheckedAt(i)); | |
161 | ApplyResponseToDigit(*d); | |
162 | if ( d->Signal() <= 0 ) | |
163 | { | |
164 | digits->RemoveAt(i); | |
165 | } | |
166 | } | |
05314992 | 167 | digits->Compress(); |
92aeef15 | 168 | } |
92aeef15 | 169 | } |
170 | ||
171 | //_____________________________________________________________________________ | |
172 | void | |
173 | AliMUONDigitizerV3::AddOrUpdateDigit(TClonesArray& array, | |
174 | const AliMUONDigit& digit) | |
175 | { | |
05314992 | 176 | // |
177 | // Add or update a digit, depending on whether there's already a digit | |
178 | // for the corresponding channel. | |
179 | // | |
92aeef15 | 180 | Int_t ix = FindDigitIndex(array,digit); |
181 | ||
182 | if (ix>=0) | |
183 | { | |
184 | AliMUONDigit* d = static_cast<AliMUONDigit*>(array.UncheckedAt(ix)); | |
185 | Bool_t ok = MergeDigits(digit,*d); | |
186 | if (!ok) | |
187 | { | |
188 | AliError("Digits are not mergeable !"); | |
189 | } | |
92aeef15 | 190 | } |
191 | else | |
192 | { | |
193 | ix = array.GetLast() + 1; | |
194 | new(array[ix]) AliMUONDigit(digit); | |
195 | } | |
196 | ||
197 | } | |
198 | ||
199 | //_____________________________________________________________________________ | |
200 | void | |
201 | AliMUONDigitizerV3::Exec(Option_t*) | |
202 | { | |
05314992 | 203 | // |
204 | // Main method. | |
205 | // We first loop over input files, and merge the sdigits we found there. | |
206 | // We then digitize all the resulting sdigits | |
207 | // And we finally generate the trigger outputs. | |
208 | // | |
92aeef15 | 209 | AliDebug(1, "Running digitizer."); |
210 | ||
211 | if ( fManager->GetNinputs() == 0 ) | |
212 | { | |
213 | AliWarning("No input set. Nothing to do."); | |
214 | return; | |
215 | } | |
216 | ||
217 | if ( !fIsInitialized ) | |
218 | { | |
219 | AliError("Not initialized. Cannot perform the work. Sorry"); | |
220 | return; | |
221 | } | |
222 | ||
223 | Int_t nInputFiles = fManager->GetNinputs(); | |
224 | ||
225 | if ( fOutputData->TreeD() == 0x0 ) | |
226 | { | |
227 | AliDebug(1,"Calling MakeDigitsContainer"); | |
228 | fOutputData->GetLoader()->MakeDigitsContainer(); | |
229 | } | |
230 | fOutputData->MakeBranch("D,GLT"); | |
231 | fOutputData->SetTreeAddress("D,GLT"); | |
232 | ||
233 | // Loop over all the input files, and merge the sdigits found in those | |
234 | // files. | |
235 | for ( Int_t iFile = 0; iFile < nInputFiles; ++iFile ) | |
236 | { | |
237 | AliMUONData* inputData = GetDataAccess(fManager->GetInputFolderName(iFile)); | |
238 | if (!inputData) | |
239 | { | |
240 | AliFatal(Form("Could not get access to input file #%d",iFile)); | |
241 | } | |
05314992 | 242 | |
92aeef15 | 243 | inputData->GetLoader()->LoadSDigits("READ"); |
92aeef15 | 244 | inputData->SetTreeAddress("S"); |
245 | inputData->GetSDigits(); | |
05314992 | 246 | |
247 | MergeWithSDigits(*fOutputData,*inputData,fManager->GetMask(iFile)); | |
248 | ||
92aeef15 | 249 | inputData->ResetSDigits(); |
250 | inputData->GetLoader()->UnloadSDigits(); | |
251 | delete inputData; | |
252 | } | |
253 | ||
254 | // At this point, we do have digit arrays (one per chamber) which contains | |
255 | // the merging of all the sdigits of the input file(s). | |
256 | // We now massage them to apply the detector response, i.e. this | |
257 | // is here that we do the "digitization" work. | |
258 | ||
259 | ApplyResponse(); | |
05314992 | 260 | |
92aeef15 | 261 | // We generate the global and local trigger decisions. |
262 | fTriggerProcessor->ExecuteTask(); | |
263 | ||
264 | // Fill the output treeD | |
265 | fOutputData->Fill("D,GLT"); | |
266 | ||
267 | // Write to the output tree(D). | |
268 | // Please note that as GlobalTrigger, LocalTrigger and Digits are in the same | |
269 | // tree (=TreeD) in different branches, this WriteDigits in fact writes all of | |
270 | // the 3 branches. | |
271 | fOutputData->GetLoader()->WriteDigits("OVERWRITE"); | |
272 | ||
273 | // Finally, we clean up after ourselves. | |
274 | fOutputData->ResetDigits(); | |
275 | fOutputData->ResetTrigger(); | |
276 | fOutputData->GetLoader()->UnloadDigits(); | |
277 | } | |
278 | ||
279 | //_____________________________________________________________________________ | |
280 | Int_t | |
281 | AliMUONDigitizerV3::FindDigitIndex(TClonesArray& array, const AliMUONDigit& digit) | |
282 | { | |
05314992 | 283 | // |
284 | // Return the index of digit within array, if that digit is there, | |
285 | // otherwise returns -1 | |
286 | // | |
92aeef15 | 287 | // FIXME: this is of course not the best implementation you can think of. |
05314992 | 288 | // Reconsider the use of hit/digit map... ? (but be sure it's needed!) |
289 | // | |
92aeef15 | 290 | Int_t n = array.GetEntriesFast(); |
291 | for ( Int_t i = 0; i < n; ++i ) | |
292 | { | |
293 | AliMUONDigit* d = static_cast<AliMUONDigit*>(array.UncheckedAt(i)); | |
294 | if ( d->DetElemId() == digit.DetElemId() && | |
295 | d->PadX() == digit.PadX() && | |
296 | d->PadY() == digit.PadY() && | |
297 | d->Cathode() == digit.Cathode() ) | |
298 | { | |
299 | return i; | |
300 | } | |
301 | } | |
302 | return -1; | |
303 | } | |
304 | ||
305 | //_____________________________________________________________________________ | |
306 | AliMUONData* | |
307 | AliMUONDigitizerV3::GetDataAccess(const TString& folderName) | |
308 | { | |
05314992 | 309 | // |
310 | // Create an AliMUONData to deal with data found in folderName. | |
311 | // | |
92aeef15 | 312 | AliDebug(1,Form("Getting access to folder %s",folderName.Data())); |
313 | AliRunLoader* runLoader = AliRunLoader::GetRunLoader(folderName); | |
314 | if (!runLoader) | |
315 | { | |
316 | AliError(Form("Could not get RunLoader from folder %s",folderName.Data())); | |
317 | return 0x0; | |
318 | } | |
319 | AliLoader* loader = static_cast<AliLoader*>(runLoader->GetLoader("MUONLoader")); | |
320 | if (!loader) | |
321 | { | |
322 | AliError(Form("Could not get MuonLoader from folder %s",folderName.Data())); | |
323 | return 0x0; | |
324 | } | |
325 | AliMUONData* data = new AliMUONData(loader,"MUON","MUONDataForDigitOutput"); | |
326 | AliDebug(1,Form("AliMUONData=%p loader=%p",data,loader)); | |
327 | return data; | |
328 | } | |
329 | ||
330 | //_____________________________________________________________________________ | |
331 | Bool_t | |
332 | AliMUONDigitizerV3::Init() | |
333 | { | |
05314992 | 334 | // |
335 | // Initialization of the TTask : | |
336 | // a) set the outputData pointer | |
337 | // b) create the calibrationData, according to run number | |
338 | // c) create the trigger processing task | |
339 | // | |
92aeef15 | 340 | AliDebug(1,""); |
341 | ||
342 | if ( fIsInitialized ) | |
343 | { | |
344 | AliError("Object already initialized."); | |
345 | return kFALSE; | |
346 | } | |
347 | ||
348 | if (!fManager) | |
349 | { | |
350 | AliError("fManager is null !"); | |
351 | return kFALSE; | |
352 | } | |
353 | ||
354 | fOutputData = GetDataAccess(fManager->GetOutputFolderName()); | |
355 | if (!fOutputData) | |
356 | { | |
357 | AliError("Can not perform digitization. I'm sorry"); | |
358 | return kFALSE; | |
359 | } | |
360 | AliDebug(1,Form("fOutputData=%p",fOutputData)); | |
361 | ||
362 | AliRunLoader* runLoader = fOutputData->GetLoader()->GetRunLoader(); | |
363 | AliRun* galice = runLoader->GetAliRun(); | |
364 | Int_t runnumber = galice->GetRunNumber(); | |
365 | ||
366 | fCalibrationData = new AliMUONCalibrationData(runnumber); | |
367 | ||
368 | switch (fTriggerCodeVersion) | |
369 | { | |
370 | case kTriggerDecision: | |
371 | fTriggerProcessor = new AliMUONTriggerDecisionV1(fOutputData); | |
372 | break; | |
373 | case kTriggerElectronics: | |
4f8a3d8b | 374 | fTriggerProcessor = new AliMUONTriggerElectronics(fOutputData); |
92aeef15 | 375 | break; |
376 | default: | |
377 | AliFatal("Unknown trigger processor type"); | |
378 | break; | |
379 | } | |
4f8a3d8b | 380 | AliDebug(1,Form("Using the following trigger code %s - %s", |
381 | fTriggerProcessor->GetName(),fTriggerProcessor->GetTitle())); | |
92aeef15 | 382 | fIsInitialized = kTRUE; |
383 | return kTRUE; | |
384 | } | |
385 | ||
386 | //_____________________________________________________________________________ | |
387 | Bool_t | |
05314992 | 388 | AliMUONDigitizerV3::MergeDigits(const AliMUONDigit& src, |
389 | AliMUONDigit& srcAndDest) | |
92aeef15 | 390 | { |
05314992 | 391 | // |
392 | // Merge 2 digits (src and srcAndDest) into srcAndDest. | |
393 | // | |
92aeef15 | 394 | AliDebug(1,"Merging the following digits:"); |
05314992 | 395 | StdoutToAliDebug(1,src.Print("tracks");); |
396 | StdoutToAliDebug(1,srcAndDest.Print("tracks");); | |
92aeef15 | 397 | |
398 | Bool_t check = ( src.DetElemId() == srcAndDest.DetElemId() && | |
399 | src.PadX() == srcAndDest.PadX() && | |
400 | src.PadY() == srcAndDest.PadY() && | |
401 | src.Cathode() == srcAndDest.Cathode() ); | |
402 | if (!check) | |
403 | { | |
404 | return kFALSE; | |
405 | } | |
406 | ||
92aeef15 | 407 | srcAndDest.AddSignal(src.Signal()); |
408 | srcAndDest.AddPhysicsSignal(src.Physics()); | |
05314992 | 409 | for ( Int_t i = 0; i < src.Ntracks(); ++i ) |
410 | { | |
411 | srcAndDest.AddTrack(src.Track(i),src.TrackCharge(i)); | |
412 | } | |
413 | StdoutToAliDebug(1,cout << "result:"; srcAndDest.Print("tracks");); | |
92aeef15 | 414 | return kTRUE; |
415 | } | |
416 | ||
417 | //_____________________________________________________________________________ | |
418 | void | |
419 | AliMUONDigitizerV3::MergeWithSDigits(AliMUONData& outputData, | |
05314992 | 420 | const AliMUONData& inputData, Int_t mask) |
92aeef15 | 421 | { |
05314992 | 422 | // |
423 | // Merge the sdigits in inputData with the digits already present in outputData | |
424 | // | |
92aeef15 | 425 | AliDebug(1,""); |
426 | ||
427 | for ( Int_t ich = 0; ich < AliMUONConstants::NCh(); ++ich ) | |
428 | { | |
429 | TClonesArray* iDigits = inputData.SDigits(ich); | |
430 | TClonesArray* oDigits = outputData.Digits(ich); | |
431 | if (!iDigits) | |
432 | { | |
433 | AliError(Form("Could not get sdigits for ich=%d",ich)); | |
434 | return; | |
435 | } | |
436 | Int_t nSDigits = iDigits->GetEntriesFast(); | |
437 | for ( Int_t k = 0; k < nSDigits; ++k ) | |
438 | { | |
439 | AliMUONDigit* sdigit = static_cast<AliMUONDigit*>(iDigits->UncheckedAt(k)); | |
92aeef15 | 440 | if (!sdigit) |
441 | { | |
442 | AliError(Form("Could not get sdigit for ich=%d and k=%d",ich,k)); | |
443 | } | |
444 | else | |
445 | { | |
05314992 | 446 | // Update the track references using the mask. |
447 | // FIXME: this is dirty, for backward compatibility only. | |
448 | // Should re-design all this way of keeping track of MC information... | |
449 | if ( mask ) sdigit->PatchTracks(mask); | |
450 | // Then add or update the digit to the output. | |
92aeef15 | 451 | AddOrUpdateDigit(*oDigits,*sdigit); |
452 | } | |
453 | } | |
454 | } | |
455 | } |