2 /**************************************************************************
3 * This file is property of and copyright by the ALICE HLT Project *
4 * ALICE Experiment at CERN, All rights reserved. *
6 * Primary Authors: Jochen Thaeder <thaeder@kip.uni-heidelberg.de> *
7 * Ivan Kisel <kisel@kip.uni-heidelberg.de> *
8 * for The ALICE HLT Project. *
10 * Permission to use, copy, modify and distribute this software and its *
11 * documentation strictly for non-commercial purposes is hereby granted *
12 * without fee, provided that the above copyright notice appears in all *
13 * copies and that both the copyright notice and this permission notice *
14 * appear in the supporting documentation. The authors make no claims *
15 * about the suitability of this software for any purpose. It is *
16 * provided "as is" without express or implied warranty. *
17 **************************************************************************/
19 ///////////////////////////////////////////////////////////////////////////////
21 // a TPC tracker processing component for the HLT based on CA by Ivan Kisel //
23 ///////////////////////////////////////////////////////////////////////////////
29 #include "AliHLTTPCCATrackerComponent.h"
30 #include "AliHLTTPCTransform.h"
31 #include "AliHLTTPCCATracker.h"
32 #include "AliHLTTPCCAHit.h"
33 #include "AliHLTTPCCAOutTrack.h"
35 #include "AliHLTTPCSpacePointData.h"
36 #include "AliHLTTPCClusterDataFormat.h"
37 #include "AliHLTTPCTransform.h"
38 #include "AliHLTTPCTrackSegmentData.h"
39 #include "AliHLTTPCTrackArray.h"
40 #include "AliHLTTPCTrackletDataFormat.h"
41 #include "AliHLTTPCDefinitions.h"
42 #include "TStopwatch.h"
45 /** ROOT macro for the implementation of ROOT specific class methods */
46 ClassImp(AliHLTTPCCATrackerComponent)
48 AliHLTTPCCATrackerComponent::AliHLTTPCCATrackerComponent()
53 // see header file for class documentation
55 // refer to README to build package
57 // visit http://web.ift.uib.no/~kjeks/doc/alice-hlt
60 AliHLTTPCCATrackerComponent::AliHLTTPCCATrackerComponent(const AliHLTTPCCATrackerComponent&)
66 // see header file for class documentation
67 HLTFatal("copy constructor untested");
70 AliHLTTPCCATrackerComponent& AliHLTTPCCATrackerComponent::operator=(const AliHLTTPCCATrackerComponent&)
72 // see header file for class documentation
73 HLTFatal("assignment operator untested");
77 AliHLTTPCCATrackerComponent::~AliHLTTPCCATrackerComponent()
79 // see header file for class documentation
84 // Public functions to implement AliHLTComponent's interface.
85 // These functions are required for the registration process
88 const char* AliHLTTPCCATrackerComponent::GetComponentID()
90 // see header file for class documentation
91 return "TPCCATracker";
94 void AliHLTTPCCATrackerComponent::GetInputDataTypes( vector<AliHLTComponentDataType>& list)
96 // see header file for class documentation
98 list.push_back( AliHLTTPCDefinitions::fgkClustersDataType );
101 AliHLTComponentDataType AliHLTTPCCATrackerComponent::GetOutputDataType()
103 // see header file for class documentation
104 return AliHLTTPCDefinitions::fgkTrackSegmentsDataType;
107 void AliHLTTPCCATrackerComponent::GetOutputDataSize( unsigned long& constBase, double& inputMultiplier )
109 // define guess for the output data size
110 constBase = 200; // minimum size
111 inputMultiplier = 0.5; // size relative to input
114 AliHLTComponent* AliHLTTPCCATrackerComponent::Spawn()
116 // see header file for class documentation
117 return new AliHLTTPCCATrackerComponent;
120 int AliHLTTPCCATrackerComponent::DoInit( int argc, const char** argv )
122 // Initialize the CA tracker component
124 // arguments could be:
125 // bfield - the magnetic field value
128 if ( fTracker ) return EINPROGRESS;
130 fTracker = new AliHLTTPCCATracker();
137 if ( !strcmp( argv[i], "bfield" ) ){
140 Logging( kHLTLogError, "HLT::TPCCATracker::DoInit", "Missing B-field", "Missing B-field specifier." );
143 fBField = strtod( argv[i+1], &cpErr );
146 Logging( kHLTLogError, "HLT::TPCCATracker::DoInit", "Missing multiplicity", "Cannot convert B-field specifier '%s'.", argv[i+1] );
150 Logging( kHLTLogDebug, "HLT::TPCCATracker::DoInit", "Reading command line",
151 "Magnetic field value is set to %f kG", fBField );
157 Logging(kHLTLogError, "HLT::TPCCATracker::DoInit", "Unknown Option", "Unknown option '%s'", argv[i] );
164 int AliHLTTPCCATrackerComponent::DoDeinit()
166 // see header file for class documentation
167 if ( fTracker ) delete fTracker;
172 int AliHLTTPCCATrackerComponent::DoEvent
174 const AliHLTComponentEventData& evtData,
175 const AliHLTComponentBlockData* blocks,
176 AliHLTComponentTriggerData& /*trigData*/,
177 AliHLTUInt8_t* outputPtr,
178 AliHLTUInt32_t& size,
179 vector<AliHLTComponentBlockData>& outputBlocks )
182 AliHLTUInt32_t MaxBufferSize = size;
183 size = 0; // output size
187 // Event reconstruction in one TPC slice with CA Tracker
189 Logging( kHLTLogDebug, "HLT::TPCCATracker::DoEvent", "DoEvent", "DoEvent()" );
190 if ( evtData.fBlockCnt<=0 )
192 Logging( kHLTLogWarning, "HLT::TPCCATracker::DoEvent", "DoEvent", "no blocks in event" );
196 const AliHLTComponentBlockData* iter = NULL;
198 AliHLTTPCClusterData* inPtrSP;
200 // Determine the slice number
204 std::vector<Int_t> slices;
205 std::vector<Int_t>::iterator slIter;
206 std::vector<unsigned> sliceCnts;
207 std::vector<unsigned>::iterator slCntIter;
209 for ( ndx = 0; ndx < evtData.fBlockCnt; ndx++ ){
211 if ( iter->fDataType != AliHLTTPCDefinitions::fgkClustersDataType ) continue;
213 slice = AliHLTTPCDefinitions::GetMinSliceNr( *iter );
216 slCntIter = sliceCnts.begin();
217 for( slIter = slices.begin(); slIter!=slices.end(); slIter++, slCntIter++ ){
218 if ( *slIter == slice ){
224 slices.push_back( slice );
225 sliceCnts.push_back( 1 );
230 // Determine slice number to really use.
231 if ( slices.size()>1 )
233 Logging( kHLTLogError, "HLT::TPCSliceTracker::DoEvent", "Multiple slices found in event",
234 "Multiple slice numbers found in event 0x%08lX (%lu). Determining maximum occuring slice number...",
235 evtData.fEventID, evtData.fEventID );
236 unsigned maxCntSlice=0;
237 slCntIter = sliceCnts.begin();
238 for( slIter = slices.begin(); slIter != slices.end(); slIter++, slCntIter++ )
240 Logging( kHLTLogError, "HLT::TPCSliceTracker::DoEvent", "Multiple slices found in event",
241 "Slice %lu found %lu times.", *slIter, *slCntIter );
242 if ( maxCntSlice<*slCntIter )
244 maxCntSlice = *slCntIter;
248 Logging( kHLTLogError, "HLT::TPCSliceTracker::DoEvent", "Multiple slices found in event",
249 "Using slice %lu.", slice );
251 else if ( slices.size()>0 )
253 slice = *(slices.begin());
258 Logging( kHLTLogWarning, "HLT::TPCCATracker::DoEvent", "DoEvent", "no slices found in event" );
263 // Initialize the tracker
265 Double_t Bz = fBField;
268 if( !fTracker ) fTracker = new AliHLTTPCCATracker;
270 Double_t inRmin = 83.65;
271 // Double_t inRmax = 133.3;
272 // Double_t outRmin = 133.5;
273 Double_t outRmax = 247.7;
274 Double_t plusZmin = 0.0529937;
275 Double_t plusZmax = 249.778;
276 Double_t minusZmin = -249.645;
277 Double_t minusZmax = -0.0799937;
278 Double_t dalpha = 0.349066;
279 Double_t alpha = 0.174533 + dalpha*iSec;
281 Bool_t zPlus = (iSec<18 );
282 Double_t zMin = zPlus ?plusZmin :minusZmin;
283 Double_t zMax = zPlus ?plusZmax :minusZmax;
284 //TPCZmin = -249.645, ZMax = 249.778
285 // Double_t rMin = inRmin;
286 // Double_t rMax = outRmax;
287 Int_t NRows = AliHLTTPCTransform::GetNRows();
289 Double_t padPitch = 0.4;
290 Double_t sigmaZ = 0.228808;
292 Double_t rowX[NRows];
293 for( Int_t irow=0; irow<NRows; irow++){
294 rowX[irow] = AliHLTTPCTransform::Row2X( irow );
297 AliHLTTPCCAParam param;
298 param.Initialize( iSec, NRows, rowX, alpha, dalpha,
299 inRmin, outRmax, zMin, zMax, padPitch, sigmaZ, Bz );
300 param.YErrorCorrection() = 1;
301 param.ZErrorCorrection() = 2;
303 fTracker->Initialize( param );
308 // min and max patch numbers and row numbers
310 Int_t row[2] = {0,0};
311 Int_t minPatch=INT_MAX, maxPatch = -1;
315 Int_t nHitsTotal = 0;
319 std::vector<unsigned long> patchIndices;
321 for ( ndx = 0; ndx < evtData.fBlockCnt; ndx++ ){
323 if( iter->fDataType != AliHLTTPCDefinitions::fgkClustersDataType ) continue;
324 if( slice!=AliHLTTPCDefinitions::GetMinSliceNr( *iter ) ) continue;
325 inPtrSP = (AliHLTTPCClusterData*)(iter->fPtr);
326 nHitsTotal+=inPtrSP->fSpacePointCnt;
327 Int_t patch = AliHLTTPCDefinitions::GetMinPatchNr( *iter );
328 if ( minPatch>patch ){
330 row[0] = AliHLTTPCTransform::GetFirstRow( patch );
332 if ( maxPatch<patch ){
334 row[1] = AliHLTTPCTransform::GetLastRow( patch );
336 std::vector<unsigned long>::iterator pIter = patchIndices.begin();
337 while( pIter!=patchIndices.end() && AliHLTTPCDefinitions::GetMinPatchNr( blocks[*pIter] ) < patch ){
340 patchIndices.insert( pIter, ndx );
344 // pass event to CA Tracker
346 fTracker->StartEvent();
348 AliHLTTPCCAHit vHits[nHitsTotal]; // CA hit array
349 Double_t vHitStoreX[nHitsTotal]; // hit X coordinates
350 Int_t vHitStoreID[nHitsTotal]; // hit ID's
351 Int_t vHitRowID[nHitsTotal]; // hit ID's
355 Logging( kHLTLogDebug, "HLT::TPCCATracker::DoEvent", "Reading hits",
356 "Total %d hits to read for slice %d", nHitsTotal, slice );
360 for( std::vector<unsigned long>::iterator pIter = patchIndices.begin(); pIter!=patchIndices.end(); pIter++ ){
364 Int_t patch = AliHLTTPCDefinitions::GetMinPatchNr( *iter );
365 inPtrSP = (AliHLTTPCClusterData*)(iter->fPtr);
367 Logging( kHLTLogDebug, "HLT::TPCCATracker::DoEvent", "Reading hits",
368 "Reading %d hits for slice %d - patch %d", inPtrSP->fSpacePointCnt, slice, patch );
370 // Read patch hits, row by row
374 Int_t firstRowHit = 0;
375 for (UInt_t i=0; i<inPtrSP->fSpacePointCnt; i++ ){
376 AliHLTTPCSpacePointData* pSP = &(inPtrSP->fSpacePoints[i]);
378 if( pSP->fPadRow != oldRow ){
379 if( oldRow>=0 ) fTracker->ReadHitRow( oldRow, vHits+firstRowHit, nRowHits );
380 oldRow = pSP->fPadRow;
384 AliHLTTPCCAHit &h = vHits[nHits];
385 if( TMath::Abs(pSP->fX- fTracker->Rows()[pSP->fPadRow].X() )>1.e-4 ) cout<<"row "<<(Int_t)pSP->fPadRow<<" "<<fTracker->Rows()[pSP->fPadRow].X()-pSP->fX <<endl;
389 h.ErrY() = TMath::Sqrt(TMath::Abs(pSP->fSigmaY2));
390 h.ErrZ() = TMath::Sqrt(TMath::Abs(pSP->fSigmaZ2));
391 if( h.ErrY()<.1 ) h.ErrY() = .1;
392 if( h.ErrZ()<.1 ) h.ErrZ() = .1;
393 if( h.ErrY()>1. ) h.ErrY() = 1.;
394 if( h.ErrZ()>1. ) h.ErrZ() = 1.;
396 vHitStoreX[nHits] = pSP->fX;
397 vHitStoreID[nHits] = pSP->fID;
398 vHitRowID[nHits] = pSP->fPadRow;
403 if( oldRow>=0 ) fTracker->ReadHitRow( oldRow, vHits+firstRowHit, nRowHits );
406 // reconstruct the event
408 TStopwatch timerReco;
410 fTracker->Reconstruct();
416 Logging( kHLTLogDebug, "HLT::TPCCATracker::DoEvent", "Reconstruct",
417 "%d tracks found for slice %d",fTracker->NOutTracks(), slice);
419 // write reconstructed tracks
421 AliHLTTPCTrackletData* outPtr = (AliHLTTPCTrackletData*)(outputPtr);
423 AliHLTTPCTrackSegmentData* currOutTracklet = outPtr->fTracklets;
425 Int_t ntracks = fTracker->NOutTracks();
427 UInt_t mySize = ((AliHLTUInt8_t *)currOutTracklet) - ((AliHLTUInt8_t *)outputPtr);
429 outPtr->fTrackletCnt = 0;
431 for( int itr=0; itr<ntracks; itr++ ){
433 AliHLTTPCCAOutTrack &t = fTracker->OutTracks()[itr];
435 //Logging( kHLTLogDebug, "HLT::TPCCATracker::DoEvent", "Wrtite output","track %d with %d hits", itr, t.NHits());
437 // calculate output track size
439 UInt_t dSize = sizeof(AliHLTTPCTrackSegmentData) + t.NHits()*sizeof(UInt_t);
441 if( mySize + dSize > MaxBufferSize ){
442 Logging( kHLTLogWarning, "HLT::TPCCATracker::DoEvent", "Wrtite output","Output buffer size exceed (buffer size %d, current size %d), %d tracks are not stored", MaxBufferSize, mySize, ntracks-itr+1);
447 // convert CA track parameters to HLT Track Segment
449 Int_t iFirstHit = fTracker->OutTrackHits()[t.FirstHitRef()];
450 Int_t iLastHit = fTracker->OutTrackHits()[t.FirstHitRef()+t.NHits()-1];
452 AliHLTTPCCAHit &firstHit = vHits[iFirstHit];
453 AliHLTTPCCAHit &lastHit = vHits[iLastHit];
455 t.Param().TransportBz(Bz, vHitStoreX[iFirstHit], firstHit.Y(), firstHit.Z() );
457 currOutTracklet->fX = t.Param().Par()[0];
458 currOutTracklet->fY = t.Param().Par()[1];
459 currOutTracklet->fZ = t.Param().Par()[2];
460 Double_t qp = t.Param().Par()[6];
461 Double_t p = TMath::Abs(qp)>1.e-5 ?1./TMath::Abs(qp) :1.e5;
462 Double_t ex = t.Param().Par()[3];
463 Double_t ey = t.Param().Par()[4];
464 Double_t ez = t.Param().Par()[5];
465 Double_t et = TMath::Sqrt( ex*ex + ey*ey );
467 currOutTracklet->fCharge = (qp>0) ?+1 :(qp<0 ?-1 :0);
468 currOutTracklet->fPt = p*et;
470 Double_t h3 = TMath::Abs(ex) >1.e-5 ? p*ex/et :0;
471 Double_t h4 = TMath::Abs(ey) >1.e-5 ? p*ey/et :0;
473 Double_t h6 = - currOutTracklet->fCharge * p * currOutTracklet->fPt;
475 currOutTracklet->fPterr = ( h3*h3*t.Param().Cov()[9] + h4*h4*t.Param().Cov()[14] + h6*h6*t.Param().Cov()[27]
476 + 2.*(h3*h4*t.Param().Cov()[13]+h3*h6*t.Param().Cov()[24]+h4*h6*t.Param().Cov()[25] )
478 currOutTracklet->fPsi = TMath::ATan2(ey, ex);
482 currOutTracklet->fPsierr = h3*h3*t.Param().Cov()[9] + h4*h4*t.Param().Cov()[14] + 2.*h3*h4*t.Param().Cov()[13];
484 currOutTracklet->fTgl = TMath::Abs(et)>1.e-5 ? ez/et :1.e5;
486 if( TMath::Abs(et) >1.e-2 ){
490 currOutTracklet->fTglerr = ( h3*h3*t.Param().Cov()[9] + h4*h4*t.Param().Cov()[14] + h5*h5*t.Param().Cov()[20]
491 + 2.*(h3*h4*t.Param().Cov()[13]+h3*h5*t.Param().Cov()[18]+h4*h5*t.Param().Cov()[19] )
494 currOutTracklet->fTglerr = 1.e-2;
497 currOutTracklet->fCharge = -currOutTracklet->fCharge;
499 t.Param().TransportBz(Bz, vHitStoreX[iLastHit], lastHit.Y(), lastHit.Z() );
501 currOutTracklet->fLastX = t.Param().Par()[0];
502 currOutTracklet->fLastY = t.Param().Par()[1];
503 currOutTracklet->fLastZ = t.Param().Par()[2];
505 #ifdef INCLUDE_TPC_HOUGH
506 #ifdef ROWHOUGHPARAMS
507 currOutTracklet->fTrackID = 0;
508 currOutTracklet->fRowRange1 = vHitRowID[iFirstHit];
509 currOutTracklet->fRowRange2 = vHitRowID[iLastHit];
510 currOutTracklet->fSector = slice;
511 currOutTracklet->fPID = 211;
513 #endif // INCLUDE_TPC_HOUGH
516 currOutTracklet->fNPoints = t.NHits();
518 for( Int_t i=0; i<t.NHits(); i++ ){
519 currOutTracklet->fPointIDs[i] = vHitStoreID[fTracker->OutTrackHits()[t.FirstHitRef()+i]];
522 currOutTracklet = (AliHLTTPCTrackSegmentData*)( (Byte_t *)currOutTracklet + dSize );
524 outPtr->fTrackletCnt++;
528 AliHLTComponentBlockData bd;
532 bd.fSpecification = AliHLTTPCDefinitions::EncodeDataSpecification( slice, slice, minPatch, maxPatch );
533 outputBlocks.push_back( bd );
539 // Set log level to "Warning" for on-line system monitoring
541 Logging( kHLTLogWarning, "HLT::TPCCATracker::DoEvent", "Tracks",
542 "CATracker slice %d: output %d tracks; input %d clusters, patches %d..%d, rows %d..%d; reco time %d/%d us",
543 slice, ntracks, nClusters, minPatch, maxPatch, row[0], row[1], (Int_t) (timer.RealTime()*1.e6), (Int_t) (timerReco.RealTime()*1.e6) );