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 ///////////////////////////////////////////////////////////////////////////////
20 // Class for TRD reconstruction //
22 // For the special options which can be used during reconstruction and their //
23 // default values pls. see function SetOption(). //
25 ///////////////////////////////////////////////////////////////////////////////
27 #include <TObjString.h>
28 #include <TObjArray.h>
29 #include <TTreeStream.h>
30 #include <TDirectory.h>
33 #include "AliRawReader.h"
36 #include "AliTRDReconstructor.h"
37 #include "AliTRDclusterizer.h"
38 #include "AliTRDrawData.h"
39 #include "AliTRDrawStream.h"
40 #include "AliTRDdigitsManager.h"
41 #include "AliTRDtrackerV1.h"
42 #include "AliESDEvent.h"
43 #include "AliESDTrdTrack.h"
44 #include "AliESDTrdTracklet.h"
45 #include "AliESDTrdTrigger.h"
46 #include "AliTRDtrackletWord.h"
48 #define SETFLG(n,f) ((n) |= f)
49 #define CLRFLG(n,f) ((n) &= ~f)
51 ClassImp(AliTRDReconstructor)
53 AliESDTrdTrigger AliTRDReconstructor::fgTriggerFlags;
54 TClonesArray *AliTRDReconstructor::fgClusters = NULL;
55 TClonesArray *AliTRDReconstructor::fgTracklets = NULL;
56 TClonesArray *AliTRDReconstructor::fgTracks = NULL;
57 Char_t const * AliTRDReconstructor::fgSteerNames[kNsteer] = {
60 ,"Write Online Tracklets "
61 ,"Stand Alone Tracking "
63 ,"Process Online Trklts "
65 ,"Cl. Radial Correction "
67 Char_t const * AliTRDReconstructor::fgSteerFlags[kNsteer] = {
68 "dc"// digits conversion [false]
69 ,"cw"// write clusters [true]
70 ,"tw"// write online tracklets [false]
71 ,"sa"// track seeding (stand alone tracking) [true]
72 ,"hlt"// HLT reconstruction [false]
73 ,"tp"// also use online tracklets for reconstruction [false]
74 ,"deb"// Write debug stream [false]
75 ,"cc" // Cluster radial correction during reconstruction [false]
77 Char_t const * AliTRDReconstructor::fgTaskNames[AliTRDrecoParam::kTRDreconstructionTasks] = {
82 Char_t const * AliTRDReconstructor::fgTaskFlags[AliTRDrecoParam::kTRDreconstructionTasks] = {
87 Int_t AliTRDReconstructor::fgNTimeBins = -1;
88 const Float_t AliTRDReconstructor::fgkMinClustersInTrack = 0.5; //
89 const Float_t AliTRDReconstructor::fgkLabelFraction = 0.8; //
90 const Double_t AliTRDReconstructor::fgkMaxChi2 = 12.0; //
91 const Double_t AliTRDReconstructor::fgkMaxSnp = 0.95; // Maximum local sine of the azimuthal angle
92 const Double_t AliTRDReconstructor::fgkMaxStep = 2.0; // Maximal step size in propagation
93 const Double_t AliTRDReconstructor::fgkEpsilon = 1.e-5; // Precision of radial coordinate
95 //_____________________________________________________________________________
96 AliTRDReconstructor::AliTRDReconstructor()
101 // setting default "ON" steering parameters
102 // owner of debug streamers
103 SETFLG(fSteerParam, kOwner);
104 // write clusters [cw]
105 SETFLG(fSteerParam, kWriteClusters);
106 // track seeding (stand alone tracking) [sa]
107 //SETFLG(fSteerParam, kSeeding);
108 // Cluster radial correction during reconstruction [cc]
109 //SETFLG(fSteerParam, kClRadialCorr);
110 memset(fDebugStream, 0, sizeof(TTreeSRedirector *) * AliTRDrecoParam::kTRDreconstructionTasks);
113 //_____________________________________________________________________________
114 AliTRDReconstructor::~AliTRDReconstructor()
121 fgClusters->Delete();
126 fgTracklets->Delete();
135 if(fSteerParam&kOwner){
136 for(Int_t itask = 0; itask < AliTRDrecoParam::kTRDreconstructionTasks; itask++)
137 if(fDebugStream[itask]) delete fDebugStream[itask];
146 //_____________________________________________________________________________
147 void AliTRDReconstructor::Init(){
151 SetOption(GetOption());
152 Options(fSteerParam);
155 fClusterizer = new AliTRDclusterizer(fgTaskNames[AliTRDrecoParam::kClusterizer], fgTaskNames[AliTRDrecoParam::kClusterizer]);
156 fClusterizer->SetReconstructor(this);
159 // Make Debug Streams when Debug Streaming
160 if(IsDebugStreaming()){
161 for(Int_t task = 0; task < AliTRDrecoParam::kTRDreconstructionTasks; task++){
162 TDirectory *savedir = gDirectory;
163 fDebugStream[task] = new TTreeSRedirector(Form("TRD.Debug%s.root", fgTaskNames[task]));
165 SETFLG(fSteerParam, kOwner);
170 //_____________________________________________________________________________
171 void AliTRDReconstructor::ConvertDigits(AliRawReader *rawReader
172 , TTree *digitsTree) const
175 // Convert raw data digits into digit objects in a root tree
178 //AliInfo("Convert raw data digits into digit objects [RawReader -> Digit TTree]");
180 AliTRDrawData rawData;
182 rawReader->Select("TRD");
183 AliTRDdigitsManager *manager = rawData.Raw2Digits(rawReader);
184 manager->MakeBranch(digitsTree);
185 manager->WriteDigits();
188 // take over ownership of online tracklets
189 fgTracklets = rawData.TrackletsArray();
190 rawData.SetTrackletsOwner(0x0);
192 // take over GTU tracks
193 fgTracks = rawData.TracksArray();
194 rawData.SetTracksOwner(0x0);
196 for (Int_t iSector = 0; iSector < 18; iSector++) {
197 fgTriggerFlags.SetFlags(iSector, rawData.GetTriggerFlags(iSector));
201 //_____________________________________________________________________________
202 void AliTRDReconstructor::Reconstruct(AliRawReader *rawReader
203 , TTree *clusterTree) const
206 // Reconstruct clusters
209 //AliInfo("Reconstruct TRD clusters from RAW data [RawReader -> Cluster TTree]");
213 rawReader->Select("TRD");
216 AliFatal("Clusterizer not available!");
220 fClusterizer->ResetRecPoints();
222 fClusterizer->OpenOutput(clusterTree);
223 fClusterizer->SetUseLabels(kFALSE);
224 fClusterizer->SetStoreRawSignals(kTRUE);
225 fClusterizer->Raw2ClustersChamber(rawReader);
227 fgNTimeBins = fClusterizer->GetNTimeBins();
229 // take over ownership of online tracklets
230 fgTracklets = fClusterizer->TrackletsArray();
231 fClusterizer->SetTrackletsOwner(kFALSE);
233 // take over GTU tracks
234 fgTracks = fClusterizer->TracksArray();
235 fClusterizer->SetTracksOwner(kFALSE);
237 for (Int_t iSector = 0; iSector < 18; iSector++) {
238 fgTriggerFlags.SetFlags(iSector, fClusterizer->GetTriggerFlags(iSector));
241 if(IsWritingClusters()) return;
243 // take over ownership of clusters
244 fgClusters = fClusterizer->RecPoints();
245 fClusterizer->SetClustersOwner(kFALSE);
248 //_____________________________________________________________________________
249 void AliTRDReconstructor::Reconstruct(TTree *digitsTree
250 , TTree *clusterTree) const
253 // Reconstruct clusters
256 //AliInfo("Reconstruct TRD clusters from Digits [Digit TTree -> Cluster TTree]");
258 AliTRDclusterizer clusterer(fgTaskNames[AliTRDrecoParam::kClusterizer], fgTaskNames[AliTRDrecoParam::kClusterizer]);
259 clusterer.SetReconstructor(this);
260 clusterer.SetUseLabels(kTRUE);
261 clusterer.SetStoreRawSignals(kTRUE);
262 clusterer.OpenOutput(clusterTree);
263 clusterer.ReadDigits(digitsTree);
264 clusterer.MakeClusters();
266 // read tracklets and tracks if not done during reading of raw data
268 clusterer.ReadTracklets();
269 fgTracklets = clusterer.TrackletsArray();
270 clusterer.SetTrackletsOwner(kFALSE);
273 clusterer.ReadTracks();
274 fgTracks = clusterer.TracksArray();
275 clusterer.SetTracksOwner(kFALSE);
278 fgNTimeBins = clusterer.GetNTimeBins();
280 if(IsWritingClusters()) return;
282 // take over ownership of clusters
283 fgClusters = clusterer.RecPoints();
284 clusterer.SetClustersOwner(kFALSE);
287 //_____________________________________________________________________________
288 AliTracker *AliTRDReconstructor::CreateTracker() const
291 // Create a TRD tracker
294 //return new AliTRDtracker(NULL);
295 AliTRDtrackerV1 *tracker = new AliTRDtrackerV1();
296 tracker->SetReconstructor(this);
301 //_____________________________________________________________________________
302 void AliTRDReconstructor::FillESD(TTree* /*digitsTree*/
303 , TTree* /*clusterTree*/
304 , AliESDEvent* esd) const
310 // ----- filling tracklets -----
311 Int_t trackletIndex[1080] = { 0 };
312 AliDebug(1, Form("Filling tracklets from %p (%i)",
313 fgTracklets, fgTracklets ? fgTracklets->GetEntriesFast() : 0));
315 Int_t nTracklets = fgTracklets->GetEntriesFast();
318 for (Int_t iTracklet = 0; iTracklet < nTracklets; iTracklet++) {
319 AliTRDtrackletBase *trkl = (AliTRDtrackletBase*) ((*fgTracklets)[iTracklet]);
320 Int_t hc = trkl->GetHCId();
321 // hc += trkl->GetY() > 0 ? 1 : 0;
322 if ((hc < 0) || (hc >= 1080)) {
323 AliError(Form("HC for tracklet: 0x%08x out of range: %i", trkl->GetTrackletWord(), trkl->GetHCId()));
326 AliDebug(5, Form("hc: %4i : 0x%08x z: %2i", hc, trkl->GetTrackletWord(), trkl->GetZbin()));
328 AliDebug(2, Form("set tracklet index for HC %i to %i", hc, iTracklet));
329 trackletIndex[hc] = iTracklet + 1;
334 for (Int_t iDet = 0; iDet < 540; iDet++) {
335 Int_t trklIndexA = trackletIndex[2*iDet + 0] - 1;
336 Int_t trklIndexB = trackletIndex[2*iDet + 1] - 1;
337 Int_t trklIndex = esd->GetNumberOfTrdTracklets();
338 AliTRDtrackletBase *trklA = trklIndexA > -1 ? (AliTRDtrackletBase*) ((*fgTracklets)[trklIndexA]) : 0x0;
339 AliTRDtrackletBase *trklB = trklIndexB > -1 ? (AliTRDtrackletBase*) ((*fgTracklets)[trklIndexB]) : 0x0;
340 while (trklA != 0x0 || trklB != 0x0) {
341 AliDebug(5, Form("det %i - A: %i/%i -> %p, B: %i/%i -> %p",
342 iDet, trklIndexA, nTracklets, trklA, trklIndexB, nTracklets, trklB));
344 AliESDTrdTracklet esdTracklet(trklB->GetTrackletWord(), trklB->GetHCId());
345 esd->AddTrdTracklet(&esdTracklet);
347 trklB = trklIndexB < nTracklets ? (AliTRDtrackletBase*) ((*fgTracklets)[trklIndexB]) : 0x0;
348 if (trklB && trklB->GetHCId() != 2*iDet + 1)
351 else if (trklB == 0x0) {
352 AliESDTrdTracklet esdTracklet(trklA->GetTrackletWord(), trklA->GetHCId());
353 esd->AddTrdTracklet(&esdTracklet);
355 trklA = trklIndexA < nTracklets ? (AliTRDtrackletBase*) ((*fgTracklets)[trklIndexA]) : 0x0;
356 if (trklA && trklA->GetHCId() != 2*iDet)
360 if ((trklA->GetZbin() < trklB->GetZbin()) ||
361 ((trklA->GetZbin() == trklB->GetZbin()) && (trklA->GetYbin() < trklB->GetYbin()))) {
362 AliESDTrdTracklet esdTracklet(trklA->GetTrackletWord(), trklA->GetHCId());
363 esd->AddTrdTracklet(&esdTracklet);
365 trklA = trklIndexA < nTracklets ? (AliTRDtrackletBase*) ((*fgTracklets)[trklIndexA]) : 0x0;
366 if (trklA && trklA->GetHCId() != 2*iDet)
370 AliESDTrdTracklet esdTracklet(trklB->GetTrackletWord(), trklB->GetHCId());
371 esd->AddTrdTracklet(&esdTracklet);
373 trklB = trklIndexB < nTracklets ? (AliTRDtrackletBase*) ((*fgTracklets)[trklIndexB]) : 0x0;
374 if (trklB && trklB->GetHCId() != 2*iDet + 1)
379 // updating tracklet indices as in ESD
380 if (esd->GetNumberOfTrdTracklets() != trklIndex) {
381 trackletIndex[2*iDet + 0] = trackletIndex[2*iDet + 1] = trklIndex;
384 trackletIndex[2*iDet + 0] = trackletIndex[2*iDet + 1] = -1;
388 // ----- filling GTU tracks -----
389 AliDebug(1, Form("Now filling ESD with GTU tracks from %p (%i)",
390 fgTracks, fgTracks ? fgTracks->GetEntriesFast() : 0));
392 for (Int_t iTrack = 0; iTrack < fgTracks->GetEntriesFast(); iTrack++) {
393 AliESDTrdTrack *trdTrack = (AliESDTrdTrack*) ((*fgTracks)[iTrack]);
395 UInt_t mask = trdTrack->GetLayerMask();
396 UInt_t stack = trdTrack->GetStack();
398 for (Int_t iLayer = 0; iLayer < 6; iLayer++) {
399 if (mask & (1 << iLayer)) {
401 Int_t det = trdTrack->GetSector()*30 + stack*6 + iLayer;
402 Int_t idx = trdTrack->GetTrackletIndex(iLayer);
404 if ((det < 0) || (det > 539)) {
405 AliError(Form("Invalid detector no. from track: %i", 2*det));
408 if (trackletIndex[2*det] >= 0) {
409 if ((trackletIndex[2*det] + idx > -1) &&
410 (trackletIndex[2*det] + idx < esd->GetNumberOfTrdTracklets())) {
411 AliESDTrdTracklet *trkl = esd->GetTrdTracklet(trackletIndex[2*det] + idx);
413 AliDebug(5, Form("adding tracklet: 0x%08x", trkl->GetTrackletWord()));
414 trdTrack->AddTrackletReference(trkl, iLayer);
420 // only add the track when it's complete (including tracklet references)
421 esd->AddTrdTrack(trdTrack);
425 esd->SetTrdTrigger(&fgTriggerFlags);
427 // clearing variables for next event
432 //_____________________________________________________________________________
433 void AliTRDReconstructor::SetOption(Option_t *opt)
436 // Read option string into the steer param.
438 // The following string options are available during reconstruction.
439 // In square brackets the default values are given.
440 // "dc" : digits conversion [false]
441 // "cw" : write clusters [true]
442 // "tw" : write online tracklets [false]
443 // "sa" : track seeding (stand alone tracking) [true]
444 // "hlt" : HLT reconstruction [false]
445 // "tp" : also use online tracklets for reconstruction [false]
446 // "deb" : Write debug stream [false]
447 // "cc" : Cluster radial correction during reconstruction [false]
449 // To check the actual options used during reconstruction include the following line in your rec.C script
450 // AliLog::SetClassDebugLevel("AliTRDReconstructor", 1);
452 AliReconstructor::SetOption(opt);
455 TObjArray *opar = s.Tokenize(",");
456 for(Int_t ipar=0; ipar<opar->GetEntriesFast(); ipar++){
457 Bool_t processed = kFALSE;
458 TString sopt(((TObjString*)(*opar)[ipar])->String());
459 for(Int_t iopt=0; iopt<kNsteer; iopt++){
460 if(!sopt.Contains(fgSteerFlags[iopt])) continue;
461 SETFLG(fSteerParam, BIT(iopt));
462 if(sopt.Contains("!")) CLRFLG(fSteerParam, BIT(iopt));
466 if(processed) continue;
468 AliWarning(Form("Unknown option flag %s.", sopt.Data()));
472 //_____________________________________________________________________________
473 void AliTRDReconstructor::Options(UInt_t steer)
479 for(Int_t iopt=0; iopt<kNsteer; iopt++){
480 AliDebugGeneral("AliTRDReconstructor", 1, Form(" %s[%s]%s", fgSteerNames[iopt], fgSteerFlags[iopt], steer ?(((steer>>iopt)&1)?" : ON":" : OFF"):""));