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"
46 // this is a global object used for automatic component registration, do not use this
47 AliHLTTPCCATrackerComponent gAliHLTTPCCATrackerComponent;
49 ClassImp(AliHLTTPCCATrackerComponent)
51 AliHLTTPCCATrackerComponent::AliHLTTPCCATrackerComponent()
56 // see header file for class documentation
58 // refer to README to build package
60 // visit http://web.ift.uib.no/~kjeks/doc/alice-hlt
63 AliHLTTPCCATrackerComponent::AliHLTTPCCATrackerComponent(const AliHLTTPCCATrackerComponent&)
68 // see header file for class documentation
69 HLTFatal("copy constructor untested");
72 AliHLTTPCCATrackerComponent& AliHLTTPCCATrackerComponent::operator=(const AliHLTTPCCATrackerComponent&)
74 // see header file for class documentation
75 HLTFatal("assignment operator untested");
79 AliHLTTPCCATrackerComponent::~AliHLTTPCCATrackerComponent()
81 // see header file for class documentation
86 // Public functions to implement AliHLTComponent's interface.
87 // These functions are required for the registration process
90 const char* AliHLTTPCCATrackerComponent::GetComponentID()
92 // see header file for class documentation
93 return "TPCCATracker";
96 void AliHLTTPCCATrackerComponent::GetInputDataTypes( vector<AliHLTComponentDataType>& list)
98 // see header file for class documentation
100 list.push_back( AliHLTTPCDefinitions::fgkClustersDataType );
103 AliHLTComponentDataType AliHLTTPCCATrackerComponent::GetOutputDataType()
105 // see header file for class documentation
106 return AliHLTTPCDefinitions::fgkTrackSegmentsDataType;
109 void AliHLTTPCCATrackerComponent::GetOutputDataSize( unsigned long& constBase, double& inputMultiplier )
111 // define guess for the output data size
112 constBase = 200; // minimum size
113 inputMultiplier = 0.5; // size relative to input
116 AliHLTComponent* AliHLTTPCCATrackerComponent::Spawn()
118 // see header file for class documentation
119 return new AliHLTTPCCATrackerComponent;
122 int AliHLTTPCCATrackerComponent::DoInit( int argc, const char** argv )
124 // Initialize the CA tracker component
126 // arguments could be:
127 // bfield - the magnetic field value
130 if ( fTracker ) return EINPROGRESS;
132 fTracker = new AliHLTTPCCATracker();
139 if ( !strcmp( argv[i], "bfield" ) ){
142 Logging( kHLTLogError, "HLT::TPCCATracker::DoInit", "Missing B-field", "Missing B-field specifier." );
145 fBField = strtod( argv[i+1], &cpErr );
148 Logging( kHLTLogError, "HLT::TPCCATracker::DoInit", "Missing multiplicity", "Cannot convert B-field specifier '%s'.", argv[i+1] );
152 Logging( kHLTLogDebug, "HLT::TPCCATracker::DoInit", "Reading command line",
153 "Magnetic field value is set to %f kG", fBField );
159 Logging(kHLTLogError, "HLT::TPCCATracker::DoInit", "Unknown Option", "Unknown option '%s'", argv[i] );
166 int AliHLTTPCCATrackerComponent::DoDeinit()
168 // see header file for class documentation
169 if ( fTracker ) delete fTracker;
174 int AliHLTTPCCATrackerComponent::DoEvent
176 const AliHLTComponentEventData& evtData,
177 const AliHLTComponentBlockData* blocks,
178 AliHLTComponentTriggerData& trigData,
179 AliHLTUInt8_t* outputPtr,
180 AliHLTUInt32_t& size,
181 vector<AliHLTComponentBlockData>& outputBlocks )
184 AliHLTUInt32_t MaxBufferSize = size;
185 size = 0; // output size
189 // Event reconstruction in one TPC slice with CA Tracker
191 Logging( kHLTLogDebug, "HLT::TPCCATracker::DoEvent", "DoEvent", "DoEvent()" );
192 if ( evtData.fBlockCnt<=0 )
194 Logging( kHLTLogWarning, "HLT::TPCCATracker::DoEvent", "DoEvent", "no blocks in event" );
198 const AliHLTComponentBlockData* iter = NULL;
200 AliHLTTPCClusterData* inPtrSP;
202 // Determine the slice number
206 std::vector<Int_t> slices;
207 std::vector<Int_t>::iterator slIter;
208 std::vector<unsigned> sliceCnts;
209 std::vector<unsigned>::iterator slCntIter;
211 for ( ndx = 0; ndx < evtData.fBlockCnt; ndx++ ){
213 if ( iter->fDataType != AliHLTTPCDefinitions::fgkClustersDataType ) continue;
215 slice = AliHLTTPCDefinitions::GetMinSliceNr( *iter );
218 slCntIter = sliceCnts.begin();
219 for( slIter = slices.begin(); slIter!=slices.end(); slIter++, slCntIter++ ){
220 if ( *slIter == slice ){
226 slices.push_back( slice );
227 sliceCnts.push_back( 1 );
232 // Determine slice number to really use.
233 if ( slices.size()>1 )
235 Logging( kHLTLogError, "HLT::TPCSliceTracker::DoEvent", "Multiple slices found in event",
236 "Multiple slice numbers found in event 0x%08lX (%lu). Determining maximum occuring slice number...",
237 evtData.fEventID, evtData.fEventID );
238 unsigned maxCntSlice=0;
239 slCntIter = sliceCnts.begin();
240 for( slIter = slices.begin(); slIter != slices.end(); slIter++, slCntIter++ )
242 Logging( kHLTLogError, "HLT::TPCSliceTracker::DoEvent", "Multiple slices found in event",
243 "Slice %lu found %lu times.", *slIter, *slCntIter );
244 if ( maxCntSlice<*slCntIter )
246 maxCntSlice = *slCntIter;
250 Logging( kHLTLogError, "HLT::TPCSliceTracker::DoEvent", "Multiple slices found in event",
251 "Using slice %lu.", slice );
253 else if ( slices.size()>0 )
255 slice = *(slices.begin());
260 Logging( kHLTLogWarning, "HLT::TPCCATracker::DoEvent", "DoEvent", "no slices found in event" );
265 // Initialize the tracker
267 Double_t Bz = fBField;
270 if( !fTracker ) fTracker = new AliHLTTPCCATracker;
272 Double_t inRmin = 83.65;
273 Double_t inRmax = 133.3;
274 Double_t outRmin = 133.5;
275 Double_t outRmax = 247.7;
276 Double_t plusZmin = 0.0529937;
277 Double_t plusZmax = 249.778;
278 Double_t minusZmin = -249.645;
279 Double_t minusZmax = -0.0799937;
280 Double_t dalpha = 0.349066;
281 Double_t alpha = 0.174533 + dalpha*iSec;
283 Bool_t zPlus = (iSec<18 );
284 Double_t zMin = zPlus ?plusZmin :minusZmin;
285 Double_t zMax = zPlus ?plusZmax :minusZmax;
286 //TPCZmin = -249.645, ZMax = 249.778
287 Double_t rMin = inRmin;
288 Double_t rMax = outRmax;
289 Int_t NRows = AliHLTTPCTransform::GetNRows();
291 Double_t padPitch = 0.4;
292 Double_t sigmaZ = 0.228808;
294 Double_t rowX[NRows];
295 for( Int_t irow=0; irow<NRows; irow++){
296 rowX[irow] = AliHLTTPCTransform::Row2X( irow );
299 AliHLTTPCCAParam param;
300 param.Initialize( iSec, NRows, rowX, alpha, dalpha,
301 inRmin, outRmax, zMin, zMax, padPitch, sigmaZ, Bz );
302 param.YErrorCorrection() = 1;
303 param.ZErrorCorrection() = 2;
305 fTracker->Initialize( param );
310 // min and max patch numbers and row numbers
312 Int_t row[2] = {0,0};
313 Int_t minPatch=INT_MAX, maxPatch = -1;
317 Int_t nHitsTotal = 0;
321 std::vector<unsigned long> patchIndices;
323 for ( ndx = 0; ndx < evtData.fBlockCnt; ndx++ ){
325 if( iter->fDataType != AliHLTTPCDefinitions::fgkClustersDataType ) continue;
326 if( slice!=AliHLTTPCDefinitions::GetMinSliceNr( *iter ) ) continue;
327 inPtrSP = (AliHLTTPCClusterData*)(iter->fPtr);
328 nHitsTotal+=inPtrSP->fSpacePointCnt;
329 Int_t patch = AliHLTTPCDefinitions::GetMinPatchNr( *iter );
330 if ( minPatch>patch ){
332 row[0] = AliHLTTPCTransform::GetFirstRow( patch );
334 if ( maxPatch<patch ){
336 row[1] = AliHLTTPCTransform::GetLastRow( patch );
338 std::vector<unsigned long>::iterator pIter = patchIndices.begin();
339 while( pIter!=patchIndices.end() && AliHLTTPCDefinitions::GetMinPatchNr( blocks[*pIter] ) < patch ){
342 patchIndices.insert( pIter, ndx );
346 // pass event to CA Tracker
348 fTracker->StartEvent();
350 AliHLTTPCCAHit vHits[nHitsTotal]; // CA hit array
351 Double_t vHitStoreX[nHitsTotal]; // hit X coordinates
352 Int_t vHitStoreID[nHitsTotal]; // hit ID's
353 Int_t vHitRowID[nHitsTotal]; // hit ID's
357 Logging( kHLTLogDebug, "HLT::TPCCATracker::DoEvent", "Reading hits",
358 "Total %d hits to read for slice %d", nHitsTotal, slice );
362 for( std::vector<unsigned long>::iterator pIter = patchIndices.begin(); pIter!=patchIndices.end(); pIter++ ){
366 Int_t patch = AliHLTTPCDefinitions::GetMinPatchNr( *iter );
367 inPtrSP = (AliHLTTPCClusterData*)(iter->fPtr);
369 Logging( kHLTLogDebug, "HLT::TPCCATracker::DoEvent", "Reading hits",
370 "Reading %d hits for slice %d - patch %d", inPtrSP->fSpacePointCnt, slice, patch );
372 // Read patch hits, row by row
376 Int_t firstRowHit = 0;
377 for (UInt_t i=0; i<inPtrSP->fSpacePointCnt; i++ ){
378 AliHLTTPCSpacePointData* pSP = &(inPtrSP->fSpacePoints[i]);
380 if( pSP->fPadRow != oldRow ){
381 if( oldRow>=0 ) fTracker->ReadHitRow( oldRow, vHits+firstRowHit, nRowHits );
382 oldRow = pSP->fPadRow;
386 AliHLTTPCCAHit &h = vHits[nHits];
387 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;
391 h.ErrY() = TMath::Sqrt(TMath::Abs(pSP->fSigmaY2));
392 h.ErrZ() = TMath::Sqrt(TMath::Abs(pSP->fSigmaZ2));
393 if( h.ErrY()<.1 ) h.ErrY() = .1;
394 if( h.ErrZ()<.1 ) h.ErrZ() = .1;
395 if( h.ErrY()>1. ) h.ErrY() = 1.;
396 if( h.ErrZ()>1. ) h.ErrZ() = 1.;
398 vHitStoreX[nHits] = pSP->fX;
399 vHitStoreID[nHits] = pSP->fID;
400 vHitRowID[nHits] = pSP->fPadRow;
405 if( oldRow>=0 ) fTracker->ReadHitRow( oldRow, vHits+firstRowHit, nRowHits );
408 // reconstruct the event
410 TStopwatch timerReco;
412 fTracker->Reconstruct();
418 Logging( kHLTLogDebug, "HLT::TPCCATracker::DoEvent", "Reconstruct",
419 "%d tracks found for slice %d",fTracker->NOutTracks(), slice);
421 // write reconstructed tracks
423 AliHLTTPCTrackletData* outPtr = (AliHLTTPCTrackletData*)(outputPtr);
425 AliHLTTPCTrackSegmentData* currOutTracklet = outPtr->fTracklets;
427 Int_t ntracks = fTracker->NOutTracks();
429 UInt_t mySize = ((AliHLTUInt8_t *)currOutTracklet) - ((AliHLTUInt8_t *)outputPtr);
431 outPtr->fTrackletCnt = 0;
433 for( int itr=0; itr<ntracks; itr++ ){
435 AliHLTTPCCAOutTrack &t = fTracker->OutTracks()[itr];
437 //Logging( kHLTLogDebug, "HLT::TPCCATracker::DoEvent", "Wrtite output","track %d with %d hits", itr, t.NHits());
439 // calculate output track size
441 UInt_t dSize = sizeof(AliHLTTPCTrackSegmentData) + t.NHits()*sizeof(UInt_t);
443 if( mySize + dSize > MaxBufferSize ){
444 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);
449 // convert CA track parameters to HLT Track Segment
451 Int_t iFirstHit = fTracker->OutTrackHits()[t.FirstHitRef()];
452 Int_t iLastHit = fTracker->OutTrackHits()[t.FirstHitRef()+t.NHits()-1];
454 AliHLTTPCCAHit &firstHit = vHits[iFirstHit];
455 AliHLTTPCCAHit &lastHit = vHits[iLastHit];
457 t.Param().TransportBz(Bz, vHitStoreX[iFirstHit], firstHit.Y(), firstHit.Z() );
459 currOutTracklet->fX = t.Param().Par()[0];
460 currOutTracklet->fY = t.Param().Par()[1];
461 currOutTracklet->fZ = t.Param().Par()[2];
462 Double_t qp = t.Param().Par()[6];
463 Double_t p = TMath::Abs(qp)>1.e-5 ?1./TMath::Abs(qp) :1.e5;
464 Double_t ex = t.Param().Par()[3];
465 Double_t ey = t.Param().Par()[4];
466 Double_t ez = t.Param().Par()[5];
467 Double_t et = TMath::Sqrt( ex*ex + ey*ey );
469 currOutTracklet->fCharge = (qp>0) ?+1 :(qp<0 ?-1 :0);
470 currOutTracklet->fPt = p*et;
472 Double_t h3 = TMath::Abs(ex) >1.e-5 ? p*ex/et :0;
473 Double_t h4 = TMath::Abs(ey) >1.e-5 ? p*ey/et :0;
475 Double_t h6 = - currOutTracklet->fCharge * p * currOutTracklet->fPt;
477 currOutTracklet->fPterr = ( h3*h3*t.Param().Cov()[9] + h4*h4*t.Param().Cov()[14] + h6*h6*t.Param().Cov()[27]
478 + 2.*(h3*h4*t.Param().Cov()[13]+h3*h6*t.Param().Cov()[24]+h4*h6*t.Param().Cov()[25] )
480 currOutTracklet->fPsi = TMath::ATan2(ey, ex);
484 currOutTracklet->fPsierr = h3*h3*t.Param().Cov()[9] + h4*h4*t.Param().Cov()[14] + 2.*h3*h4*t.Param().Cov()[13];
486 currOutTracklet->fTgl = TMath::Abs(et)>1.e-5 ? ez/et :1.e5;
488 if( TMath::Abs(et) >1.e-2 ){
492 currOutTracklet->fTglerr = ( h3*h3*t.Param().Cov()[9] + h4*h4*t.Param().Cov()[14] + h5*h5*t.Param().Cov()[20]
493 + 2.*(h3*h4*t.Param().Cov()[13]+h3*h5*t.Param().Cov()[18]+h4*h5*t.Param().Cov()[19] )
496 currOutTracklet->fTglerr = 1.e-2;
499 currOutTracklet->fCharge = -currOutTracklet->fCharge;
501 t.Param().TransportBz(Bz, vHitStoreX[iLastHit], lastHit.Y(), lastHit.Z() );
503 currOutTracklet->fLastX = t.Param().Par()[0];
504 currOutTracklet->fLastY = t.Param().Par()[1];
505 currOutTracklet->fLastZ = t.Param().Par()[2];
507 #ifdef INCLUDE_TPC_HOUGH
508 #ifdef ROWHOUGHPARAMS
509 currOutTracklet->fTrackID = 0;
510 currOutTracklet->fRowRange1 = vHitRowID[iFirstHit];
511 currOutTracklet->fRowRange2 = vHitRowID[iLastHit];
512 currOutTracklet->fSector = slice;
513 currOutTracklet->fPID = 211;
515 #endif // INCLUDE_TPC_HOUGH
518 currOutTracklet->fNPoints = t.NHits();
520 for( Int_t i=0; i<t.NHits(); i++ ){
521 currOutTracklet->fPointIDs[i] = vHitStoreID[fTracker->OutTrackHits()[t.FirstHitRef()+i]];
524 currOutTracklet = (AliHLTTPCTrackSegmentData*)( (Byte_t *)currOutTracklet + dSize );
526 outPtr->fTrackletCnt++;
530 AliHLTComponentBlockData bd;
534 bd.fSpecification = AliHLTTPCDefinitions::EncodeDataSpecification( slice, slice, minPatch, maxPatch );
535 outputBlocks.push_back( bd );
541 // Set log level to "Warning" for on-line system monitoring
543 Logging( kHLTLogWarning, "HLT::TPCCATracker::DoEvent", "Tracks",
544 "CATracker slice %d: output %d tracks; input %d clusters, patches %d..%d, rows %d..%d; reco time %d/%d us",
545 slice, ntracks, nClusters, minPatch, maxPatch, row[0], row[1], (Int_t) (timer.RealTime()*1.e6), (Int_t) (timerReco.RealTime()*1.e6) );