1 /**************************************************************************
2 * Copyright(c) 1998-2000, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
21 #include "AliRunDigitizer.h"
22 #include "AliRunLoader.h"
24 #include "AliMUONDigitizer.h"
25 #include "AliMUONConstants.h"
26 #include "AliMUONChamber.h"
27 #include "AliMUONHitMapA1.h"
29 #include "AliMUONLoader.h"
30 #include "AliMUONConstants.h"
31 #include "AliMUONTransientDigit.h"
32 #include "AliMUONTriggerDecision.h"
34 #include "AliMUONGeometryModule.h"
35 #include "AliMUONGeometryStore.h"
37 /////////////////////////////////////////////////////////////////////////////////////
39 // AliMUONDigitizer should be base abstract class of all digitisers in the MUON
40 // module. It implements the common functionality of looping over input streams
41 // filling the fTDList and writing the fTDList to the output stream.
42 // Inheriting digitizers need to override certain methods to choose and initialize
43 // the correct input and output trees, apply the correct detector response if any
44 // and implement how the transient digits are generated from the input stream.
46 /////////////////////////////////////////////////////////////////////////////////////
48 ClassImp(AliMUONDigitizer)
50 //___________________________________________
51 AliMUONDigitizer::AliMUONDigitizer() :
59 // Default constructor.
60 // Initializes all pointers to NULL.
69 //___________________________________________
70 AliMUONDigitizer::AliMUONDigitizer(AliRunDigitizer* manager) :
71 AliDigitizer(manager),
78 // Constructor which should be used rather than the default constructor.
79 // Initializes all pointers to NULL.
88 //___________________________________________
89 AliMUONDigitizer::AliMUONDigitizer(const AliMUONDigitizer& rhs)
92 // Protected copy constructor
94 AliFatal("Not implemented.");
97 //___________________________________________
98 AliMUONDigitizer::~AliMUONDigitizer()
108 //-------------------------------------------------------------------
110 AliMUONDigitizer::operator=(const AliMUONDigitizer& rhs)
112 // Protected assignement operator
114 if (this == &rhs) return *this;
116 AliFatal("Not implemented.");
121 //------------------------------------------------------------------------
122 Bool_t AliMUONDigitizer::Init()
128 //------------------------------------------------------------------------
129 void AliMUONDigitizer::Exec(Option_t* /*option*/)
131 // The main work loop starts here.
132 // The digitization process is broken up into two steps:
133 // 1) Loop over input streams and create transient digits from the input.
134 // Done in GenerateTransientDigits()
135 // 2) Loop over the generated transient digits and write them to the output
136 // stream. Done in CreateDigits()
138 AliDebug(1, "Running digitiser.");
140 if (fManager->GetNinputs() == 0)
142 AliWarning("No inputs set, nothing to do.");
146 if (!FetchLoaders(fManager->GetInputFolderName(0), fRunLoader, fGime) ) return;
147 if (! FetchGlobalPointers(fRunLoader) ) return;
148 if (! FetchTriggerPointer(fGime) ) return;
152 AliDebug(2, Form("Event Number is %d.", fManager->GetOutputEventNr()));
154 // Loop over files to merge and to digitize
156 for (Int_t inputFile = 0; inputFile < fManager->GetNinputs(); inputFile++)
158 fMask = fManager->GetMask(inputFile);
159 AliDebug(2, Form("Digitising folder %d, with fMask = %d: %s", inputFile, fMask,
160 (const char*)fManager->GetInputFolderName(inputFile)));
163 // If this is the first file then we already have the loaders loaded.
164 if (! FetchLoaders(fManager->GetInputFolderName(inputFile), fRunLoader, fGime) )
167 // If this is not the first file then it is assumed to be background.
170 if (! InitInputData(fGime) ) continue;
171 GenerateTransientDigits();
172 CleanupInputData(fGime);
175 Bool_t ok = FetchLoaders(fManager->GetOutputFolderName(), fRunLoader, fGime);
176 if (ok) ok = InitOutputData(fGime);
177 if (ok) CreateDigits();
178 if (ok) CreateTrigger();
179 if (ok) CleanupOutputData(fGime);
182 CleanupTriggerArrays();
185 //--------------------------------------------------------------------------
186 void AliMUONDigitizer::AddOrUpdateTransientDigit(AliMUONTransientDigit* mTD)
188 // Checks to see if the transient digit exists in the corresponding fHitMap.
189 // If it does then the digit is updated otherwise it is added.
191 if (ExistTransientDigit(mTD))
193 UpdateTransientDigit(mTD);
194 delete mTD; // The new digit can be deleted because it was not added.
197 AddTransientDigit(mTD);
200 //------------------------------------------------------------------------
201 void AliMUONDigitizer::UpdateTransientDigit(AliMUONTransientDigit* mTD)
203 // Update the transient digit that is already in the fTDList by adding the new
204 // transient digits charges and track lists to the existing one.
206 AliDebug(4,Form( "Updating transient digit 0x%X", (void*)mTD));
207 // Choosing the maping of the cathode plane of the chamber:
208 Int_t detElemId = mTD->DetElemId();
210 Int_t iNchCpl= fNDetElemId[detElemId] + (mTD->Cathode()-1) * AliMUONConstants::NDetElem();
212 AliMUONTransientDigit *pdigit =
213 static_cast<AliMUONTransientDigit*>( fHitMap[iNchCpl]->GetHit(mTD->PadX(),mTD->PadY()) );
216 pdigit->AddSignal( mTD->Signal() );
217 pdigit->AddPhysicsSignal( mTD->Physics() );
219 // update list of tracks
220 Int_t ntracks = mTD->GetNTracks();
221 if (ntracks > kMAXTRACKS) // Truncate the number of tracks to kMAXTRACKS if we have to.
224 "TransientDigit returned the number of tracks to be %d, which is bigger than kMAXTRACKS.",
226 AliDebug(1,Form( "Reseting the number of tracks to be %d.", kMAXTRACKS));
227 ntracks = kMAXTRACKS;
230 for (Int_t i = 0; i < ntracks; i++)
232 pdigit->UpdateTrackList( mTD->GetTrack(i), mTD->GetCharge(i) );
236 //------------------------------------------------------------------------
237 void AliMUONDigitizer::AddTransientDigit(AliMUONTransientDigit* mTD)
239 // Adds the transient digit to the fTDList and sets the appropriate entry
240 // in the fHitMap arrays.
242 AliDebug(4,Form( "Adding transient digit 0x%X", (void*)mTD));
243 // Choosing the maping of the cathode plane of the chamber:
245 Int_t detElemId = mTD->DetElemId();
246 Int_t iNchCpl= fNDetElemId[detElemId] + (mTD->Cathode()-1) * AliMUONConstants::NDetElem();
248 fTDList->AddAtAndExpand(mTD, fTDCounter);
249 if (iNchCpl>-1 && iNchCpl<2*AliMUONConstants::NDetElem()) {
250 fHitMap[iNchCpl]->SetHit( mTD->PadX(), mTD->PadY(), fTDCounter);
255 //------------------------------------------------------------------------
256 Bool_t AliMUONDigitizer::ExistTransientDigit(AliMUONTransientDigit* mTD)
258 // Checks if the transient digit already exists on the corresponding fHitMap.
259 // i.e. is there a transient digit on the same chamber, cathode and pad position
260 // as mTD. If yes then kTRUE is returned else kFASLE is returned.
262 // Choosing the maping of the cathode plane of the chamber:
263 Int_t detElemId = mTD->DetElemId();
265 Int_t iNchCpl= fNDetElemId[detElemId] + (mTD->Cathode()-1) *AliMUONConstants::NDetElem() ;
267 // Int_t iNchCpl= mTD->Chamber() + (mTD->Cathode()-1) * AliMUONConstants::NCh();
268 if (iNchCpl>-1 && iNchCpl<2*AliMUONConstants::NDetElem())
269 return( fHitMap[iNchCpl]->TestHit(mTD->PadX(), mTD->PadY()) );
273 //-----------------------------------------------------------------------
274 void AliMUONDigitizer::CreateDigits()
276 // Loops over the fTDList for each cathode, gets the correct signal for the
277 // digit and adds the new digit to the output stream.
279 fTDList->Sort(); // sort by idDE
280 AliDebug(2, "Creating digits...");
281 // for (Int_t icat = 0; icat < 2; icat++) {
283 Int_t digitindex[14] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
286 // Filling Digit List
287 Int_t nentries = fTDList->GetEntriesFast();
288 for (Int_t nent = 0; nent < nentries; nent++) {
290 AliMUONTransientDigit* td = (AliMUONTransientDigit*)fTDList->At(nent);
291 if (td == NULL) continue;
293 // Must be the same cathode, otherwise we will fill a mixture
294 // of digits from both cathodes.
295 //if (icat != td->Cathode() - 1) continue;
297 AliDebug(3,Form( "Creating digit from transient digit 0x%X", (void*)td));
299 Int_t q = GetSignalFrom(td);
300 assert( 0 <= td->Chamber() && td->Chamber() <= 13 );
301 if (q > 0) AddDigit(td, q, digitindex[td->Chamber()]++);
308 //------------------------------------------------------------------------
309 void AliMUONDigitizer::AddDigit(
310 AliMUONTransientDigit* td, Int_t responseCharge,
314 // Prepares the digits, track and charge arrays in preparation for a call to
315 // AddDigit(Int_t, Int_t[kMAXTRACKS], Int_t[kMAXTRACKS], Int_t[6])
316 // This method is called by CreateDigits() whenever a new digit needs to be added
317 // to the output stream trees.
318 // The responseCharge value is used as the Signal of the new digit.
319 // The OnWriteTransientDigit method is also called just before the adding the
320 // digit to allow inheriting digitizers to be able to do some specific processing
323 Int_t tracks[kMAXTRACKS];
324 Int_t charges[kMAXTRACKS];
327 digits[0] = td->PadX();
328 digits[1] = td->PadY();
329 digits[2] = td->Cathode() - 1;
330 digits[3] = responseCharge;
331 digits[4] = td->Physics();
332 digits[5] = td->Hit();
333 digits[6] = td->DetElemId();
335 Int_t nptracks = td->GetNTracks();
336 if (nptracks > kMAXTRACKS) {
339 "TransientDigit returned the number of tracks to be %d, which is bigger than kMAXTRACKS.",
341 AliDebug(1, Form("Reseting the number of tracks to be %d.", kMAXTRACKS));
342 nptracks = kMAXTRACKS;
345 for (Int_t i = 0; i < nptracks; i++) {
347 tracks[i] = td->GetTrack(i);
348 charges[i] = td->GetCharge(i);
351 // Sort list of tracks according to charge
352 SortTracks(tracks,charges,nptracks);
354 if (nptracks < kMAXTRACKS ) {
356 for (Int_t i = nptracks; i < kMAXTRACKS; i++) {
362 AliDebug(4,Form( "Adding digit with charge %d.", responseCharge));
364 OnWriteTransientDigit(td);
365 AddDigit(td->Chamber(), tracks, charges, digits);
366 AddDigitTrigger(td->Chamber(), tracks, charges, digits, digitindex);
369 //------------------------------------------------------------------------
370 void AliMUONDigitizer::OnCreateTransientDigit(AliMUONTransientDigit* /*digit*/, TObject* /*source_object*/)
374 // This is derived by Digitisers that want to trace which digits were made from
378 //------------------------------------------------------------------------
379 void AliMUONDigitizer::OnWriteTransientDigit(AliMUONTransientDigit* /*digit*/)
383 // This is derived by Digitisers that want to trace which digits were made from
387 //------------------------------------------------------------------------
388 Bool_t AliMUONDigitizer::FetchLoaders(const char* foldername, AliRunLoader*& runloader, AliMUONLoader*& muonloader)
390 // Fetches the run loader from the current folder, specified by 'foldername'.
391 // The muon loader is then loaded from the fetched run loader.
392 // kTRUE is returned if no error occurred otherwise kFALSE is returned.
394 AliDebug(3, Form("Fetching run loader and muon loader from folder: %s", foldername));
396 runloader = AliRunLoader::GetRunLoader(foldername);
397 if (runloader == NULL)
399 AliError(Form("RunLoader not found in folder: %s", foldername));
402 muonloader = (AliMUONLoader*) runloader->GetLoader("MUONLoader");
403 if (muonloader == NULL)
405 AliError(Form("MUONLoader not found in folder: %s", foldername));
412 //------------------------------------------------------------------------
413 Bool_t AliMUONDigitizer::FetchGlobalPointers(AliRunLoader* runloader)
415 // Fetches the AliRun object into the global gAlice pointer from the specified
416 // run loader. The AliRun object is loaded into memory using the run loader if
417 // not yet loaded. The MUON module object is then loaded from gAlice and
418 // AliMUONData fetched from the MUON module.
419 // kTRUE is returned if no error occurred otherwise kFALSE is returned.
421 AliDebug(3, Form("Fetching gAlice, MUON module and AliMUONData from runloader 0x%X.",
425 if (runloader->GetAliRun() == NULL) runloader->LoadgAlice();
426 gAlice = runloader->GetAliRun();
429 AliError(Form("Could not find the AliRun object in runloader 0x%X.", (void*)runloader));
432 fMUON = (AliMUON*) gAlice->GetDetector("MUON");
435 AliError(Form("Could not find the MUON module in runloader 0x%X.", (void*)runloader));
439 AliMUONLoader *muonloader = (AliMUONLoader*) runloader->GetLoader("MUONLoader");
440 if (muonloader == NULL)
442 AliError( "MUONLoader not found ");
447 if (fMUONData == NULL) fMUONData = new AliMUONData(muonloader,"MUON","MUON");
448 if (fMUONData == NULL)
450 AliError(Form("Could not find AliMUONData object in runloader 0x%X.", (void*)runloader));
456 //-----------------------------------------------------------------------
457 Bool_t AliMUONDigitizer::FetchTriggerPointer(AliMUONLoader* loader)
459 if (fMUONData == NULL) {
460 AliError("MUONData not found");
464 if (fTrigDec == NULL)
465 fTrigDec = new AliMUONTriggerDecision(loader,0,fMUONData);
470 //------------------------------------------------------------------------
471 void AliMUONDigitizer::InitArrays()
473 // Creates a new fTDList object.
474 // Also creates an array of 2 * chamber_number AliMUONHitMapA1 objects
475 // in the fHitMaps array. Each one is set to a chamber and cathode
476 // specific segmentation model.
478 // Note: the fTDList and fHitMap arrays must be NULL before calling this method.
480 AliDebug(2, "Initialising internal arrays.");
481 AliDebug(4, "Creating transient digits list.");
482 fTDList = new TObjArray;
484 // Array of pointer of the AliMUONHitMapA1:
485 // two HitMaps per chamber, or one HitMap per cahtode plane
486 fHitMap = new AliMUONHitMapA1* [2*AliMUONConstants::NDetElem()];
487 for (Int_t i=0; i<2*AliMUONConstants::NDetElem(); i++) fHitMap[i] = 0x0;
492 for (Int_t i = 0; i < AliMUONConstants::NCh(); i++) {
495 AliDebug(4,Form( "Creating hit map for chamber %d, cathode 1.", i+1));
496 AliMUONChamber* chamber = &(fMUON->Chamber(i));
497 AliMUONGeometrySegmentation* c1Segmentation = chamber->SegmentationModel2(1); // Cathode plane 1
498 AliDebug(4,Form( "Creating hit map for chamber %d, cathode 2.", i+1));
499 AliMUONGeometrySegmentation* c2Segmentation = chamber->SegmentationModel2(2); // Cathode plane 2
501 AliMUONGeometryModule* geometry = fMUON->Chamber(i).GetGeometry();
502 AliMUONGeometryStore* detElements = geometry->GetDetElementStore();
505 // Loop over detection elements
506 for (Int_t j=0; j<detElements->GetNofEntries(); j++) {
508 idDE = detElements->GetEntry(j)->GetUniqueID();
509 fNDetElemId[idDE] = k;
511 fHitMap[k] = new AliMUONHitMapA1(idDE,c1Segmentation, fTDList);
513 fHitMap[k+AliMUONConstants::NDetElem()] = new AliMUONHitMapA1(idDE,c2Segmentation, fTDList);
518 //------------------------------------------------------------------------
519 void AliMUONDigitizer::CleanupArrays()
521 // The arrays fTDList and fHitMap are deleted and the pointers set to NULL.
523 AliDebug(2, "Deleting internal arrays.");
524 for(Int_t i = 0; i < 2*AliMUONConstants::NDetElem(); i++) {
530 AliDebug(4, "Deleting transient digits list.");
537 //------------------------------------------------------------------------
538 void AliMUONDigitizer::SortTracks(Int_t *tracks, Int_t *charges, Int_t ntr) const
541 // Sort the list of tracks contributing to a given digit
542 // Only the 3 most significant tracks are actually sorted
545 if (ntr <= 1) return;
548 // Loop over signals, only 3 times
553 Int_t idx[3] = {-2,-2,-2};
554 Int_t jch[3] = {-2,-2,-2};
555 Int_t jtr[3] = {-2,-2,-2};
558 if (ntr < 3) imax = ntr;
561 for(i = 0; i < imax; i++)
566 for(j = 0; j < ntr; j++)
568 if ( (i == 1 && j == idx[i-1]) ||
569 (i == 2 && (j == idx[i-1] || j == idx[i-2]))
573 if(charges[j] > qmax)
583 jch[i] = charges[jmax];
584 jtr[i] = tracks[jmax];
589 for(i = 0; i < 3; i++)