1 /**************************************************************************
2 * Copyright(c) 1998-1999, 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 **************************************************************************/
18 // -----------------------------------
19 // Class AliMUONClusterReconstructor
20 // ----------------------------------
21 // MUON cluster reconstructor for MUON
22 // Should implement a virtual class ClusterFinder to choose between VS and AZ method
24 #include <Riostream.h>
25 #include "AliMUONClusterReconstructor.h"
26 #include "AliRunLoader.h"
27 #include "AliLoader.h"
29 #include "AliMUONDigit.h"
30 #include "AliMUONConstants.h"
31 #include "AliMUONData.h"
32 #include "AliMUONClusterFinderVS.h"
33 #include "AliMUONClusterInput.h"
34 #include "AliMUONRawCluster.h"
35 #include "AliMUONVClusterFinder.h"
36 #include "AliMUONCluster.h"
37 #include "AliMpDEManager.h"
38 #include "AliMpSegmentation.h"
39 #include "AliMUONGeometryTransformer.h"
43 ClassImp(AliMUONClusterReconstructor) // Class implementation in ROOT context
46 //__________________________________________________________________________
47 AliMUONClusterReconstructor::AliMUONClusterReconstructor(AliMUONData* data,
48 AliMUONVClusterFinder* clusterFinder,
49 const AliMUONGeometryTransformer* transformer)
51 fClusterFinder(clusterFinder),
53 fRecModel(new AliMUONClusterFinderVS()),
54 fDigitsCath0(new TClonesArray("AliMUONDigit",1000)),
55 fDigitsCath1(new TClonesArray("AliMUONDigit",1000)),
56 fTransformer(transformer)
58 /// Standard Constructor
60 fDigitsCath0->SetOwner(kTRUE);
61 fDigitsCath1->SetOwner(kTRUE);
62 if (!transformer && clusterFinder)
64 AliFatal("I require a geometry transformer, otherwise I cannot compute "
65 "global coordinates of the clusters !");
69 //__________________________________________________________________________
70 AliMUONClusterReconstructor::~AliMUONClusterReconstructor(void)
79 //______________________________________________________________________________
81 AliMUONClusterReconstructor::ClusterizeOneDEV2(Int_t detElemId)
83 AliDebug(1,Form("DE %d",detElemId));
84 const AliMpVSegmentation* seg[2] =
85 { AliMpSegmentation::Instance()->GetMpSegmentation(detElemId,0),
86 AliMpSegmentation::Instance()->GetMpSegmentation(detElemId,1)
90 TClonesArray* digits[2] = { fDigitsCath0, fDigitsCath1 };
92 Bool_t ok = fClusterFinder->Prepare(seg,digits);
95 AliWarning(Form("No hit pad for DE %d ?",detElemId));
98 AliMUONCluster* cluster;
100 Int_t chamber = detElemId/100 - 1;
102 while ( ( cluster = fClusterFinder->NextCluster() ) )
104 StdoutToAliDebug(1,cout << "From AliMUONClusterReconstructor::ClusterizeOneDEV2 : cluster->Print():" << endl;
107 // Converts cluster objects into ones suitable for output
109 AliMUONRawCluster rawCluster;
111 rawCluster.SetDetElemId(detElemId);
113 for ( Int_t cathode = 0; cathode < 2; ++cathode )
115 rawCluster.SetMultiplicity(cathode,cluster->Multiplicity(cathode));
116 rawCluster.SetCharge(cathode,cluster->Charge()); // both cathode get the total cluster charge
119 fTransformer->Local2Global(detElemId,
120 cluster->Position().X(), cluster->Position().Y(),
125 AliDebug(1,Form("Adding RawCluster detElemId %4d mult %2d charge %e (xl,yl,zl)=(%e,%e,%e) (xg,yg,zg)=(%e,%e,%e)",
126 detElemId,cluster->Multiplicity(),cluster->Charge(),
127 cluster->Position().X(),cluster->Position().Y(),0.0,
130 rawCluster.SetX(cathode,xg);
131 rawCluster.SetY(cathode,yg);
132 rawCluster.SetZ(cathode,zg);
134 fMUONData->AddRawCluster(chamber,rawCluster);
139 //______________________________________________________________________________
141 AliMUONClusterReconstructor::ClusterizeOneDE(Int_t detElemId)
143 /// Clusterize one detection element, and let fMUONData know about
146 if ( fDigitsCath0->GetEntriesFast() || fDigitsCath1->GetEntriesFast() )
148 if ( fClusterFinder )
150 ClusterizeOneDEV2(detElemId);
154 Int_t iChamber = AliMpDEManager::GetChamberId(detElemId);
155 AliMUONClusterInput::Instance()->SetDigits(iChamber, detElemId,
156 fDigitsCath0,fDigitsCath1);
157 AliDebug(3,Form("ClusterizeOneDE iChamber=%d DE=%d",iChamber,detElemId));
158 StdoutToAliDebug(3,cout << "DigitsCath0=" << endl;
159 fDigitsCath0->Print();
160 cout << "DigitsCath1=" << endl;
161 fDigitsCath1->Print(););
162 fRecModel->FindRawClusters();
164 // copy results into the output container
165 TClonesArray* tmp = fRecModel->GetRawClusters();
166 for (Int_t id = 0; id < tmp->GetEntriesFast(); ++id)
168 AliMUONRawCluster* pClus = (AliMUONRawCluster*) tmp->At(id);
169 fMUONData->AddRawCluster(iChamber, *pClus);
173 fDigitsCath0->Clear("C");
174 fDigitsCath1->Clear("C");
178 //____________________________________________________________________
179 void AliMUONClusterReconstructor::Digits2Clusters(Int_t chBeg)
181 /// Clusterize all the tracking chamber digits.
183 /// For each chamber, we loop *once* on that chamber digits, and store them
184 /// in 2 temporary arrays (one pair of arrays per detection element,
185 /// one array per cathode). Once a pair of arrays is full (i.e. all the digits
186 /// of that detection element have been stored), we clusterize this DE, and
187 /// move to the next one.
189 if (!fRecModel && !fClusterFinder)
191 AliWarning("No reco model defined. Nothing to do...");
199 for ( iChamber = chBeg; iChamber < AliMUONConstants::NTrackingCh(); ++iChamber )
201 TClonesArray* muonDigits = fMUONData->Digits(iChamber);
203 Int_t ndig = muonDigits->GetEntriesFast();
206 muonDigits->Sort(); // the sort *must* be per DE (at least), otherwise
207 // the following logic with currentDE will fail.
209 currentDE = -1; // initialize the DE counter (that is used to track
210 // when we change of DE in the following loop over
211 // all digits) to an invalid value.
213 for ( Int_t k = 0; k < ndig; ++k )
215 AliMUONDigit* digit = (AliMUONDigit*) muonDigits->UncheckedAt(k);
216 if ( ! digit->Signal() > 0 ) continue; // skip void digits.
218 if ( digit->DetElemId() != currentDE )
220 AliDebug(3,Form("Switching DE from %d to %d",currentDE,digit->DetElemId()));
221 // we get to a new DE, so clusterize the previous one before
223 ClusterizeOneDE(currentDE);
224 currentDE = digit->DetElemId();
227 // Add the digit to the array with the right cathode number.
228 if (digit->Cathode() == 0)
230 new((*fDigitsCath0)[fDigitsCath0->GetLast()+1]) AliMUONDigit(*digit);
234 new((*fDigitsCath1)[fDigitsCath1->GetLast()+1]) AliMUONDigit(*digit);
236 } // end of loop on chamber digits
238 // As the above logic is based on detecting a change in DE number,
239 // the last DE of each chamber has not been clusterized, so we do
241 ClusterizeOneDE(currentDE);
242 } // end of loop over chambers
245 //_______________________________________________________________________
247 AliMUONClusterReconstructor::SetRecoModel(AliMUONClusterFinderVS* rec)
249 /// Set reconstruction model
255 //_______________________________________________________________________
256 void AliMUONClusterReconstructor::Trigger2Trigger()
258 /// Copy trigger from TreeD to TreeR
260 fMUONData->SetTreeAddress("GLT");
261 fMUONData->GetTriggerD();