Rewritten using new VDigitStore and VDigit interfaces (Laurent)
[u/mrichter/AliRoot.git] / MUON / AliMUONDigitizerV3.cxx
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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
92aeef15 19#include "AliMUONDigitizerV3.h"
20
4ce497c4 21#include "AliMUON.h"
92aeef15 22#include "AliMUONCalibrationData.h"
ad26d4f6 23#include "AliCDBManager.h"
92aeef15 24#include "AliMUONConstants.h"
6b092dfc 25#include "AliMUONSimData.h"
4ce497c4 26#include "AliMUONDataIterator.h"
92aeef15 27#include "AliMUONDigit.h"
ad26d4f6 28#include "AliMUONLogger.h"
4ce497c4 29#include "AliMUONSegmentation.h"
4ce497c4 30#include "AliMUONTriggerEfficiencyCells.h"
4f8a3d8b 31#include "AliMUONTriggerElectronics.h"
05314992 32#include "AliMUONVCalibParam.h"
9265505b 33
4ce497c4 34#include "AliMpDEIterator.h"
92aeef15 35#include "AliMpDEManager.h"
4ce497c4 36#include "AliMpIntPair.h"
37#include "AliMpPad.h"
92aeef15 38#include "AliMpStationType.h"
9265505b 39#include "AliMpSegmentation.h"
4ce497c4 40#include "AliMpVSegmentation.h"
66f4c572 41#include "AliMpDEManager.h"
866c3232 42#include "AliMpCathodType.h"
9265505b 43
92aeef15 44#include "AliRun.h"
45#include "AliRunDigitizer.h"
46#include "AliRunLoader.h"
9265505b 47#include "AliLog.h"
48
866c3232 49#include <Riostream.h>
50#include <TF1.h>
51#include <TMath.h>
52#include <TRandom.h>
53#include <TString.h>
4ce497c4 54///
9265505b 55/// \class AliMUONDigitizerV3
4ce497c4 56/// The digitizer is performing the transformation to go from SDigits (digits
57/// w/o any electronic noise) to Digits (w/ electronic noise, and decalibration)
58///
59/// The decalibration is performed by doing the reverse operation of the
60/// calibration, that is we do (Signal+pedestal)/gain -> ADC
61///
62/// Note also that the digitizer takes care of merging sdigits that belongs
63/// to the same pad, either because we're merging several input sdigit files
64/// or with a single file because the sdigitizer does not merge sdigits itself
65/// (for performance reason mainly, and because anyway we know we have to do it
66/// here, at the digitization level).
67///
c4ee792d 68/// \author Laurent Aphecetche
4ce497c4 69
70namespace
71{
72 AliMUON* muon()
73 {
74 return static_cast<AliMUON*>(gAlice->GetModule("MUON"));
75 }
4ce497c4 76}
77
78const Double_t AliMUONDigitizerV3::fgkNSigmas=3;
79
9265505b 80/// \cond CLASSIMP
92aeef15 81ClassImp(AliMUONDigitizerV3)
9265505b 82/// \endcond
92aeef15 83
84//_____________________________________________________________________________
85AliMUONDigitizerV3::AliMUONDigitizerV3(AliRunDigitizer* manager,
4ce497c4 86 Bool_t generateNoisyDigits)
92aeef15 87: AliDigitizer(manager),
92aeef15 88fIsInitialized(kFALSE),
89fOutputData(0x0),
90fCalibrationData(0x0),
91fTriggerProcessor(0x0),
4ce497c4 92fTriggerEfficiency(0x0),
ccea41d4 93fFindDigitIndexTimer(),
94fGenerateNoisyDigitsTimer(),
95fExecTimer(),
4ce497c4 96fNoiseFunction(0x0),
ad26d4f6 97 fGenerateNoisyDigits(generateNoisyDigits),
98 fLogger(new AliMUONLogger(1000))
92aeef15 99{
9265505b 100 /// Ctor.
101
92aeef15 102 AliDebug(1,Form("AliRunDigitizer=%p",fManager));
4ce497c4 103 fGenerateNoisyDigitsTimer.Start(kTRUE); fGenerateNoisyDigitsTimer.Stop();
104 fExecTimer.Start(kTRUE); fExecTimer.Stop();
105 fFindDigitIndexTimer.Start(kTRUE); fFindDigitIndexTimer.Stop();
92aeef15 106}
107
108//_____________________________________________________________________________
109AliMUONDigitizerV3::~AliMUONDigitizerV3()
110{
9265505b 111 /// Dtor. Note we're the owner of some pointers.
112
92aeef15 113 AliDebug(1,"dtor");
4ce497c4 114
92aeef15 115 delete fOutputData;
116 delete fCalibrationData;
117 delete fTriggerProcessor;
4ce497c4 118 delete fNoiseFunction;
119
a7b01aa5 120 AliDebug(1, Form("Execution time for FindDigitIndex() : R:%.2fs C:%.2fs",
4ce497c4 121 fFindDigitIndexTimer.RealTime(),fFindDigitIndexTimer.CpuTime()));
122 if ( fGenerateNoisyDigits )
123 {
a7b01aa5 124 AliDebug(1, Form("Execution time for GenerateNoisyDigits() : R:%.2fs C:%.2fs",
4ce497c4 125 fGenerateNoisyDigitsTimer.RealTime(),
126 fGenerateNoisyDigitsTimer.CpuTime()));
127 }
a7b01aa5 128 AliDebug(1, Form("Execution time for Exec() : R:%.2fs C:%.2fs",
4ce497c4 129 fExecTimer.RealTime(),fExecTimer.CpuTime()));
ad26d4f6 130
131 AliInfo("Summary of messages");
132 fLogger->Print();
4ce497c4 133
ad26d4f6 134 delete fLogger;
92aeef15 135}
136
137//_____________________________________________________________________________
138void
4ce497c4 139AliMUONDigitizerV3::ApplyResponseToTrackerDigit(AliMUONDigit& digit, Bool_t addNoise)
92aeef15 140{
9265505b 141 /// For tracking digits, starting from an ideal digit's charge, we :
142 ///
143 /// - add some noise (thus leading to a realistic charge), if requested to do so
144 /// - divide by a gain (thus decalibrating the digit)
145 /// - add a pedestal (thus decalibrating the digit)
146 /// - sets the signal to zero if below 3*sigma of the noise
59b91539 147
4ce497c4 148 static const Int_t kMaxADC = (1<<12)-1; // We code the charge on a 12 bits ADC.
ad26d4f6 149
4ce497c4 150 Float_t signal = digit.Signal();
ad26d4f6 151
59b91539 152 if ( !addNoise )
ad26d4f6 153 {
154 digit.SetADC(TMath::Nint(signal));
155 return;
156 }
92aeef15 157
4ce497c4 158 Int_t detElemId = digit.DetElemId();
92aeef15 159
160 Int_t manuId = digit.ManuId();
161 Int_t manuChannel = digit.ManuChannel();
162
4ce497c4 163 AliMUONVCalibParam* pedestal = fCalibrationData->Pedestals(detElemId,manuId);
92aeef15 164 if (!pedestal)
ad26d4f6 165 {
166 fLogger->Log(Form("%s:%d:Could not get pedestal for DE=%4d manuId=%4d. Disabling.",
167 __FILE__,__LINE__,
168 detElemId,manuId));
169 digit.SetPhysicsSignal(0);
170 digit.SetSignal(0);
171 digit.SetADC(0);
172 return;
173 }
05314992 174 Float_t pedestalMean = pedestal->ValueAsFloat(manuChannel,0);
175 Float_t pedestalSigma = pedestal->ValueAsFloat(manuChannel,1);
59b91539 176
4ce497c4 177 AliMUONVCalibParam* gain = fCalibrationData->Gains(detElemId,manuId);
92aeef15 178 if (!gain)
ad26d4f6 179 {
180 fLogger->Log(Form("%s:%d:Could not get gain for DE=%4d manuId=%4d. Disabling.",
181 __FILE__,__LINE__,
182 detElemId,manuId));
183 digit.SetPhysicsSignal(0);
184 digit.SetSignal(0);
185 digit.SetADC(0);
186 return;
187 }
05314992 188 Float_t gainMean = gain->ValueAsFloat(manuChannel,0);
ad26d4f6 189
59b91539 190 Float_t adcNoise = gRandom->Gaus(0.0,pedestalSigma);
ad26d4f6 191
92aeef15 192 Int_t adc;
ad26d4f6 193
05314992 194 if ( gainMean < 1E-6 )
ad26d4f6 195 {
196 AliError(Form("Got a too small gain %e for DE=%d manuId=%d manuChannel=%d. "
197 "Setting signal to 0.",
198 gainMean,detElemId,manuId,manuChannel));
199 adc = 0;
200 }
59b91539 201 else
ad26d4f6 202 {
203 adc = TMath::Nint( signal / gainMean + pedestalMean + adcNoise);///
204
205 if ( adc <= pedestalMean + fgkNSigmas*pedestalSigma )
59b91539 206 {
ad26d4f6 207 adc = 0;
59b91539 208 }
ad26d4f6 209 }
59b91539 210
05314992 211 // be sure we stick to 12 bits.
4ce497c4 212 if ( adc > kMaxADC )
ad26d4f6 213 {
214 adc = kMaxADC;
215 }
59b91539 216
92aeef15 217 digit.SetPhysicsSignal(TMath::Nint(signal));
218 digit.SetSignal(adc);
219 digit.SetADC(adc);
220}
221
222//_____________________________________________________________________________
4ce497c4 223void
ad26d4f6 224AliMUONDigitizerV3::ApplyResponseToTriggerDigit(AliMUONDigit& digit)
4ce497c4 225{
9265505b 226 /// \todo add comment
227
4ce497c4 228 if ( !fTriggerEfficiency ) return;
229
ad26d4f6 230 if (digit.IsEfficiencyApplied()) return;
4ce497c4 231
ad26d4f6 232 AliMUONDigit* correspondingDigit = FindCorrespondingDigit(digit);
233
234 if (!correspondingDigit) return; //reject bad correspondences
a0dc51a6 235
4ce497c4 236 Int_t detElemId = digit.DetElemId();
9265505b 237
238 AliMpSegmentation* segmentation = AliMpSegmentation::Instance();
4ce497c4 239 const AliMpVSegmentation* segment[2] =
240 {
866c3232 241 segmentation->GetMpSegmentation(detElemId,AliMp::GetCathodType(digit.Cathode())),
242 segmentation->GetMpSegmentation(detElemId,AliMp::GetCathodType(correspondingDigit->Cathode()))
4ce497c4 243 };
244
245 AliMpPad pad[2] =
246 {
247 segment[0]->PadByIndices(AliMpIntPair(digit.PadX(),digit.PadY()),kTRUE),
248 segment[1]->PadByIndices(AliMpIntPair(correspondingDigit->PadX(),correspondingDigit->PadY()),kTRUE)
249 };
250
081d3361 251 Int_t p0(1);
ad26d4f6 252 if (digit.Cathode()==0) p0=0;
081d3361 253
254 AliMpIntPair location = pad[p0].GetLocation(0);
255 Int_t nboard = location.GetFirst();
4ce497c4 256
4ce497c4 257 Bool_t isTrig[2];
081d3361 258
259 fTriggerEfficiency->IsTriggered(detElemId, nboard-1,
4ce497c4 260 isTrig[0], isTrig[1]);
ad26d4f6 261 digit.EfficiencyApplied(kTRUE);
262 correspondingDigit->EfficiencyApplied(kTRUE);
081d3361 263
4ce497c4 264 if (!isTrig[digit.Cathode()])
265 {
266 digit.SetSignal(0);
267 }
268
269 if ( &digit != correspondingDigit )
270 {
271 if (!isTrig[correspondingDigit->Cathode()])
272 {
273 correspondingDigit->SetSignal(0);
274 }
275 }
276}
277
278//_____________________________________________________________________________
92aeef15 279void
280AliMUONDigitizerV3::ApplyResponse()
281{
9265505b 282 /// Loop over all chamber digits, and apply the response to them
283 /// Note that this method may remove digits.
284
4ce497c4 285 const Bool_t kAddNoise = kTRUE;
286
92aeef15 287 for ( Int_t ich = 0; ich < AliMUONConstants::NCh(); ++ich )
4ce497c4 288 {
92aeef15 289 TClonesArray* digits = fOutputData->Digits(ich);
290 Int_t n = digits->GetEntriesFast();
4ce497c4 291 Bool_t trackingChamber = ( ich < AliMUONConstants::NTrackingCh() );
92aeef15 292 for ( Int_t i = 0; i < n; ++i )
293 {
294 AliMUONDigit* d = static_cast<AliMUONDigit*>(digits->UncheckedAt(i));
ad26d4f6 295 if ( !d ) continue; // that digit might have been removed
4ce497c4 296 if ( trackingChamber )
297 {
298 ApplyResponseToTrackerDigit(*d,kAddNoise);
299 }
300 else
301 {
ad26d4f6 302 ApplyResponseToTriggerDigit(*d);
4ce497c4 303 }
92aeef15 304 if ( d->Signal() <= 0 )
305 {
306 digits->RemoveAt(i);
307 }
308 }
ad26d4f6 309 digits->Compress(); // only do the compress at the end in order not to
310 // change the n = digits->GetEntriesFast()
92aeef15 311 }
4ce497c4 312
313// The version below, using iterator, does not yet work (as the iterator
314// assumes it is reading digits from the tree, while in this case it's
315// writing...)
316//
317// AliMUONDigit* digit(0x0);
318//
319// // First loop on tracker digits
320// AliMUONDataIterator tracker(fOutputData,"D",AliMUONDataIterator::kTrackingChambers);
321//
322// while ( ( digit = static_cast<AliMUONDigit*>(tracker.Next()) ) )
323// {
324// ApplyResponseToTrackerDigit(*digit);
325// if ( digit->Signal() <= 0 )
326// {
327// tracker.Remove();
328// }
329//
330// }
331//
332// // Then loop on trigger digits
333// AliMUONDataIterator trigger(fOutputData,"D",AliMUONDataIterator::kTriggerChambers);
334//
335// while ( ( digit = static_cast<AliMUONDigit*>(trigger.Next()) ) )
336// {
337// ApplyResponseToTriggerDigit(*digit,fOutputData);
338// if ( digit->Signal() <= 0 )
339// {
340// trigger.Remove();
341// }
342// }
92aeef15 343}
344
345//_____________________________________________________________________________
346void
347AliMUONDigitizerV3::AddOrUpdateDigit(TClonesArray& array,
348 const AliMUONDigit& digit)
349{
9265505b 350 /// Add or update a digit, depending on whether there's already a digit
351 /// for the corresponding channel.
352
92aeef15 353 Int_t ix = FindDigitIndex(array,digit);
354
355 if (ix>=0)
356 {
357 AliMUONDigit* d = static_cast<AliMUONDigit*>(array.UncheckedAt(ix));
358 Bool_t ok = MergeDigits(digit,*d);
359 if (!ok)
360 {
361 AliError("Digits are not mergeable !");
362 }
92aeef15 363 }
364 else
365 {
366 ix = array.GetLast() + 1;
367 new(array[ix]) AliMUONDigit(digit);
368 }
369
370}
371
372//_____________________________________________________________________________
373void
374AliMUONDigitizerV3::Exec(Option_t*)
375{
9265505b 376 /// Main method.
377 /// We first loop over input files, and merge the sdigits we found there.
378 /// Second, we digitize all the resulting sdigits
379 /// Then we generate noise-only digits (for tracker only)
380 /// And we finally generate the trigger outputs.
4ce497c4 381
92aeef15 382 AliDebug(1, "Running digitizer.");
383
384 if ( fManager->GetNinputs() == 0 )
385 {
386 AliWarning("No input set. Nothing to do.");
387 return;
388 }
389
390 if ( !fIsInitialized )
391 {
392 AliError("Not initialized. Cannot perform the work. Sorry");
393 return;
394 }
395
4ce497c4 396 fExecTimer.Start(kFALSE);
397
92aeef15 398 Int_t nInputFiles = fManager->GetNinputs();
399
400 if ( fOutputData->TreeD() == 0x0 )
401 {
ad26d4f6 402 AliDebug(2,"Calling MakeDigitsContainer");
92aeef15 403 fOutputData->GetLoader()->MakeDigitsContainer();
404 }
405 fOutputData->MakeBranch("D,GLT");
406 fOutputData->SetTreeAddress("D,GLT");
407
408 // Loop over all the input files, and merge the sdigits found in those
409 // files.
410 for ( Int_t iFile = 0; iFile < nInputFiles; ++iFile )
411 {
6b092dfc 412 AliMUONSimData* inputData = GetDataAccess(fManager->GetInputFolderName(iFile));
92aeef15 413 if (!inputData)
414 {
415 AliFatal(Form("Could not get access to input file #%d",iFile));
416 }
05314992 417
92aeef15 418 inputData->GetLoader()->LoadSDigits("READ");
92aeef15 419 inputData->SetTreeAddress("S");
420 inputData->GetSDigits();
05314992 421
422 MergeWithSDigits(*fOutputData,*inputData,fManager->GetMask(iFile));
423
92aeef15 424 inputData->ResetSDigits();
425 inputData->GetLoader()->UnloadSDigits();
426 delete inputData;
427 }
428
429 // At this point, we do have digit arrays (one per chamber) which contains
430 // the merging of all the sdigits of the input file(s).
431 // We now massage them to apply the detector response, i.e. this
432 // is here that we do the "digitization" work.
433
434 ApplyResponse();
4ce497c4 435
436 if ( fGenerateNoisyDigits )
437 {
438 // Generate noise-only digits for tracker.
439 GenerateNoisyDigits();
440 }
441
92aeef15 442 // We generate the global and local trigger decisions.
443 fTriggerProcessor->ExecuteTask();
444
445 // Fill the output treeD
446 fOutputData->Fill("D,GLT");
447
448 // Write to the output tree(D).
449 // Please note that as GlobalTrigger, LocalTrigger and Digits are in the same
450 // tree (=TreeD) in different branches, this WriteDigits in fact writes all of
451 // the 3 branches.
452 fOutputData->GetLoader()->WriteDigits("OVERWRITE");
453
454 // Finally, we clean up after ourselves.
455 fOutputData->ResetDigits();
456 fOutputData->ResetTrigger();
457 fOutputData->GetLoader()->UnloadDigits();
4ce497c4 458
459 fExecTimer.Stop();
92aeef15 460}
461
462//_____________________________________________________________________________
4ce497c4 463AliMUONDigit*
ad26d4f6 464AliMUONDigitizerV3::FindCorrespondingDigit(AliMUONDigit& digit) const
4ce497c4 465{
ad26d4f6 466 /// Find, if it exists, the digit corresponding to digit.Hit(), in the
467 /// other cathode
9265505b 468
ad26d4f6 469// Iterator does not yet work when writing digits (only works when reading,
470// which is not the case here)
471//
472// AliMUONDataIterator it(data,"D",AliMUONDataIterator::kTriggerChambers);
473// AliMUONDigit* cd;
474//
475// while ( ( cd = static_cast<AliMUONDigit*>(it.Next()) ) )
476// {
477// if ( cd->DetElemId() == digit.DetElemId() &&
478// cd->Hit() == digit.Hit() &&
479// cd->Cathode() != digit.Cathode() )
480// {
481// break;
482// }
483// }
4ce497c4 484
ad26d4f6 485 Int_t ich = AliMpDEManager::GetChamberId(digit.DetElemId());
486 TClonesArray* digits = fOutputData->Digits(ich);
487 Int_t n = digits->GetEntriesFast();
488 for ( Int_t i = 0; i < n; ++i )
4ce497c4 489 {
ad26d4f6 490 AliMUONDigit* d = static_cast<AliMUONDigit*>(digits->UncheckedAt(i));
491 if ( d &&
492 d->DetElemId() == digit.DetElemId() &&
493 d->Hit() == digit.Hit() &&
494 d->Cathode() != digit.Cathode() )
4ce497c4 495 {
ad26d4f6 496 return d;
497 }
498 }
499
4ce497c4 500 return 0x0;
501}
502
503
504//_____________________________________________________________________________
92aeef15 505Int_t
4ce497c4 506AliMUONDigitizerV3::FindDigitIndex(TClonesArray& array,
507 const AliMUONDigit& digit) const
92aeef15 508{
9265505b 509 /// Return the index of digit within array, if that digit is there,
510 /// otherwise returns -1
511 ///
512 /// \todo FIXME: this is of course not the best implementation you can think of.
513 /// Reconsider the use of hit/digit map... ? (but be sure it's needed!)
4ce497c4 514
515 fFindDigitIndexTimer.Start(kFALSE);
516
92aeef15 517 Int_t n = array.GetEntriesFast();
518 for ( Int_t i = 0; i < n; ++i )
519 {
520 AliMUONDigit* d = static_cast<AliMUONDigit*>(array.UncheckedAt(i));
521 if ( d->DetElemId() == digit.DetElemId() &&
522 d->PadX() == digit.PadX() &&
523 d->PadY() == digit.PadY() &&
524 d->Cathode() == digit.Cathode() )
525 {
4ce497c4 526 fFindDigitIndexTimer.Stop();
92aeef15 527 return i;
528 }
529 }
4ce497c4 530 fFindDigitIndexTimer.Stop();
92aeef15 531 return -1;
532}
533
534//_____________________________________________________________________________
4ce497c4 535void
536AliMUONDigitizerV3::GenerateNoisyDigits()
537{
9265505b 538 /// According to a given probability, generate digits that
539 /// have a signal above the noise cut (ped+n*sigma_ped), i.e. digits
540 /// that are "only noise".
4ce497c4 541
542 if ( !fNoiseFunction )
543 {
544 fNoiseFunction = new TF1("AliMUONDigitizerV3::fNoiseFunction","gaus",
545 fgkNSigmas,fgkNSigmas*10);
546
547 fNoiseFunction->SetParameters(1,0,1);
548 }
549
550 fGenerateNoisyDigitsTimer.Start(kFALSE);
551
552 for ( Int_t i = 0; i < AliMUONConstants::NTrackingCh(); ++i )
553 {
554 AliMpDEIterator it;
555
556 it.First(i);
557
558 while ( !it.IsDone() )
559 {
560 for ( Int_t cathode = 0; cathode < 2; ++cathode )
561 {
866c3232 562 GenerateNoisyDigitsForOneCathode(it.CurrentDEId(),cathode);
4ce497c4 563 }
564 it.Next();
565 }
566 }
567
568 fGenerateNoisyDigitsTimer.Stop();
569}
570
571//_____________________________________________________________________________
572void
573AliMUONDigitizerV3::GenerateNoisyDigitsForOneCathode(Int_t detElemId, Int_t cathode)
574{
9265505b 575 /// Generate noise-only digits for one cathode of one detection element.
576 /// Called by GenerateNoisyDigits()
4ce497c4 577
66f4c572 578 Int_t chamberId = AliMpDEManager::GetChamberId(detElemId);
579 TClonesArray* digits = fOutputData->Digits(chamberId);
4ce497c4 580
9265505b 581 const AliMpVSegmentation* seg
866c3232 582 = AliMpSegmentation::Instance()->GetMpSegmentation(detElemId,AliMp::GetCathodType(cathode));
4ce497c4 583 Int_t nofPads = seg->NofPads();
584
585 Int_t maxIx = seg->MaxPadIndexX();
586 Int_t maxIy = seg->MaxPadIndexY();
587
cdea095e 588 static const Double_t kProbToBeOutsideNsigmas = TMath::Erfc(fgkNSigmas/TMath::Sqrt(2.0)) / 2. ;
4ce497c4 589
84aac932 590 Int_t nofNoisyPads = TMath::Nint(kProbToBeOutsideNsigmas*nofPads);
4ce497c4 591 if ( !nofNoisyPads ) return;
592
593 nofNoisyPads =
594 TMath::Nint(gRandom->Gaus(nofNoisyPads,
595 nofNoisyPads/TMath::Sqrt(nofNoisyPads)));
596
597 AliDebug(3,Form("DE %d cath %d nofNoisyPads %d",detElemId,cathode,nofNoisyPads));
598
599 for ( Int_t i = 0; i < nofNoisyPads; ++i )
600 {
601 Int_t ix(-1);
602 Int_t iy(-1);
603 do {
604 ix = gRandom->Integer(maxIx+1);
605 iy = gRandom->Integer(maxIy+1);
606 } while ( !seg->HasPad(AliMpIntPair(ix,iy)) );
607 AliMUONDigit d;
608 d.SetDetElemId(detElemId);
609 d.SetCathode(cathode);
610 d.SetPadX(ix);
611 d.SetPadY(iy);
612 if ( FindDigitIndex(*digits,d) >= 0 )
613 {
614 // this digit is already there, and not noise-only, we simply skip it
615 continue;
616 }
617 AliMpPad pad = seg->PadByIndices(AliMpIntPair(ix,iy));
618 Int_t manuId = pad.GetLocation().GetFirst();
619 Int_t manuChannel = pad.GetLocation().GetSecond();
620
621 d.SetElectronics(manuId,manuChannel);
622
623 AliMUONVCalibParam* pedestals = fCalibrationData->Pedestals(detElemId,manuId);
624
ad26d4f6 625 if (!pedestals)
626 {
627 // no pedestal available for this channel, simply give up
628 return;
629 }
630
4ce497c4 631 Float_t pedestalMean = pedestals->ValueAsFloat(manuChannel,0);
632 Float_t pedestalSigma = pedestals->ValueAsFloat(manuChannel,1);
633
634 Double_t ped = fNoiseFunction->GetRandom()*pedestalSigma;
59b91539 635
4ce497c4 636 d.SetSignal(TMath::Nint(ped+pedestalMean+0.5));
59b91539 637 d.SetPhysicsSignal(0);
4ce497c4 638 d.NoiseOnly(kTRUE);
639 AliDebug(3,Form("Adding a pure noise digit :"));
ad26d4f6 640// StdoutToAliDebug(3,cout << "Before Response: " << endl;
641// d.Print(););
4ce497c4 642 ApplyResponseToTrackerDigit(d,kFALSE);
643 if ( d.Signal() > 0 )
644 {
645 AddOrUpdateDigit(*digits,d);
646 }
647 else
648 {
649 AliError("Pure noise below threshold. This should not happen. Not adding "
650 "this digit.");
651 }
ad26d4f6 652// StdoutToAliDebug(3,cout << "After Response: " << endl;
653// d.Print(););
4ce497c4 654 }
655}
656
657//_____________________________________________________________________________
6b092dfc 658AliMUONSimData*
92aeef15 659AliMUONDigitizerV3::GetDataAccess(const TString& folderName)
660{
6b092dfc 661 /// Create an AliMUONSimData to deal with data found in folderName.
9265505b 662
ad26d4f6 663 AliDebug(2,Form("Getting access to folder %s",folderName.Data()));
92aeef15 664 AliRunLoader* runLoader = AliRunLoader::GetRunLoader(folderName);
665 if (!runLoader)
666 {
667 AliError(Form("Could not get RunLoader from folder %s",folderName.Data()));
668 return 0x0;
669 }
670 AliLoader* loader = static_cast<AliLoader*>(runLoader->GetLoader("MUONLoader"));
671 if (!loader)
672 {
673 AliError(Form("Could not get MuonLoader from folder %s",folderName.Data()));
674 return 0x0;
675 }
6b092dfc 676 AliMUONSimData* data = new AliMUONSimData(loader,"MUON","MUONDataForDigitOutput");
677 AliDebug(2,Form("AliMUONSimData=%p loader=%p",data,loader));
92aeef15 678 return data;
679}
680
681//_____________________________________________________________________________
682Bool_t
683AliMUONDigitizerV3::Init()
684{
9265505b 685 /// Initialization of the TTask :
686 /// a) set the outputData pointer
687 /// b) create the calibrationData, according to run number
688 /// c) create the trigger processing task
689
ad26d4f6 690 AliDebug(2,"");
92aeef15 691
692 if ( fIsInitialized )
693 {
694 AliError("Object already initialized.");
695 return kFALSE;
696 }
697
698 if (!fManager)
699 {
700 AliError("fManager is null !");
701 return kFALSE;
702 }
703
704 fOutputData = GetDataAccess(fManager->GetOutputFolderName());
705 if (!fOutputData)
706 {
707 AliError("Can not perform digitization. I'm sorry");
708 return kFALSE;
709 }
ad26d4f6 710 AliDebug(2,Form("fOutputData=%p",fOutputData));
92aeef15 711
ad26d4f6 712 Int_t runnumber = AliCDBManager::Instance()->GetRun();
92aeef15 713
714 fCalibrationData = new AliMUONCalibrationData(runnumber);
ad26d4f6 715 if ( !fCalibrationData->Pedestals() )
716 {
717 AliFatal("Could not access pedestals from OCDB !");
718 }
719 if ( !fCalibrationData->Gains() )
720 {
721 AliFatal("Could not access gains from OCDB !");
722 }
eb5d708c 723 fTriggerProcessor = new AliMUONTriggerElectronics(fOutputData,fCalibrationData);
4ce497c4 724
afb3ccf0 725 if ( muon()->GetTriggerEffCells() )
4ce497c4 726 {
727 fTriggerEfficiency = fCalibrationData->TriggerEfficiency();
728 if ( fTriggerEfficiency )
729 {
a7b01aa5 730 AliDebug(1, "Will apply trigger efficiency");
4ce497c4 731 }
732 else
733 {
ad26d4f6 734 AliFatal("I was requested to apply trigger efficiency, but I could "
4ce497c4 735 "not get it !");
736 }
737 }
738
ad26d4f6 739 AliDebug(1, Form("Will %s generate noise-only digits for tracker",
740 (fGenerateNoisyDigits ? "":"NOT")));
741
92aeef15 742 fIsInitialized = kTRUE;
743 return kTRUE;
744}
745
746//_____________________________________________________________________________
747Bool_t
05314992 748AliMUONDigitizerV3::MergeDigits(const AliMUONDigit& src,
749 AliMUONDigit& srcAndDest)
92aeef15 750{
9265505b 751 /// Merge 2 digits (src and srcAndDest) into srcAndDest.
752
ad26d4f6 753 AliDebug(2,"Merging the following digits:");
754// StdoutToAliDebug(2,src.Print("tracks"););
755// StdoutToAliDebug(2,srcAndDest.Print("tracks"););
92aeef15 756
757 Bool_t check = ( src.DetElemId() == srcAndDest.DetElemId() &&
758 src.PadX() == srcAndDest.PadX() &&
759 src.PadY() == srcAndDest.PadY() &&
760 src.Cathode() == srcAndDest.Cathode() );
761 if (!check)
762 {
763 return kFALSE;
764 }
765
92aeef15 766 srcAndDest.AddSignal(src.Signal());
767 srcAndDest.AddPhysicsSignal(src.Physics());
05314992 768 for ( Int_t i = 0; i < src.Ntracks(); ++i )
769 {
770 srcAndDest.AddTrack(src.Track(i),src.TrackCharge(i));
771 }
ad26d4f6 772// StdoutToAliDebug(2,cout << "result:"; srcAndDest.Print("tracks"););
92aeef15 773 return kTRUE;
774}
775
776//_____________________________________________________________________________
777void
6b092dfc 778AliMUONDigitizerV3::MergeWithSDigits(AliMUONSimData& outputData,
779 const AliMUONSimData& inputData, Int_t mask)
92aeef15 780{
9265505b 781 /// Merge the sdigits in inputData with the digits already present in outputData
782
ad26d4f6 783 AliDebug(2,"");
92aeef15 784
785 for ( Int_t ich = 0; ich < AliMUONConstants::NCh(); ++ich )
786 {
787 TClonesArray* iDigits = inputData.SDigits(ich);
788 TClonesArray* oDigits = outputData.Digits(ich);
789 if (!iDigits)
790 {
791 AliError(Form("Could not get sdigits for ich=%d",ich));
792 return;
793 }
794 Int_t nSDigits = iDigits->GetEntriesFast();
795 for ( Int_t k = 0; k < nSDigits; ++k )
796 {
797 AliMUONDigit* sdigit = static_cast<AliMUONDigit*>(iDigits->UncheckedAt(k));
92aeef15 798 if (!sdigit)
799 {
800 AliError(Form("Could not get sdigit for ich=%d and k=%d",ich,k));
801 }
802 else
803 {
05314992 804 // Update the track references using the mask.
805 // FIXME: this is dirty, for backward compatibility only.
806 // Should re-design all this way of keeping track of MC information...
807 if ( mask ) sdigit->PatchTracks(mask);
808 // Then add or update the digit to the output.
92aeef15 809 AddOrUpdateDigit(*oDigits,*sdigit);
810 }
9265505b 811 }
92aeef15 812 }
813}