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 ///////////////////////////////////////////////////////////////////////////////
30 #include "AliHLTTPCCATrackerComponent.h"
31 #include "AliHLTTPCTransform.h"
32 #include "AliHLTTPCCATracker.h"
33 #include "AliHLTTPCCAHit.h"
34 #include "AliHLTTPCCAOutTrack.h"
36 #include "AliHLTTPCSpacePointData.h"
37 #include "AliHLTTPCClusterDataFormat.h"
38 #include "AliHLTTPCTransform.h"
39 #include "AliHLTTPCTrackSegmentData.h"
40 #include "AliHLTTPCTrackArray.h"
41 #include "AliHLTTPCTrackletDataFormat.h"
42 #include "AliHLTTPCDefinitions.h"
43 #include "TStopwatch.h"
46 /** ROOT macro for the implementation of ROOT specific class methods */
47 ClassImp(AliHLTTPCCATrackerComponent)
49 AliHLTTPCCATrackerComponent::AliHLTTPCCATrackerComponent()
54 // see header file for class documentation
56 // refer to README to build package
58 // visit http://web.ift.uib.no/~kjeks/doc/alice-hlt
61 AliHLTTPCCATrackerComponent::AliHLTTPCCATrackerComponent(const AliHLTTPCCATrackerComponent&)
67 // see header file for class documentation
68 HLTFatal("copy constructor untested");
71 AliHLTTPCCATrackerComponent& AliHLTTPCCATrackerComponent::operator=(const AliHLTTPCCATrackerComponent&)
73 // see header file for class documentation
74 HLTFatal("assignment operator untested");
78 AliHLTTPCCATrackerComponent::~AliHLTTPCCATrackerComponent()
80 // see header file for class documentation
85 // Public functions to implement AliHLTComponent's interface.
86 // These functions are required for the registration process
89 const char* AliHLTTPCCATrackerComponent::GetComponentID()
91 // see header file for class documentation
92 return "TPCCATracker";
95 void AliHLTTPCCATrackerComponent::GetInputDataTypes( vector<AliHLTComponentDataType>& list)
97 // see header file for class documentation
99 list.push_back( AliHLTTPCDefinitions::fgkClustersDataType );
102 AliHLTComponentDataType AliHLTTPCCATrackerComponent::GetOutputDataType()
104 // see header file for class documentation
105 return AliHLTTPCDefinitions::fgkTrackSegmentsDataType;
108 void AliHLTTPCCATrackerComponent::GetOutputDataSize( unsigned long& constBase, double& inputMultiplier )
110 // define guess for the output data size
111 constBase = 200; // minimum size
112 inputMultiplier = 0.5; // size relative to input
115 AliHLTComponent* AliHLTTPCCATrackerComponent::Spawn()
117 // see header file for class documentation
118 return new AliHLTTPCCATrackerComponent;
121 int AliHLTTPCCATrackerComponent::DoInit( int argc, const char** argv )
123 // Initialize the CA tracker component
125 // arguments could be:
126 // bfield - the magnetic field value
129 if ( fTracker ) return EINPROGRESS;
131 fTracker = new AliHLTTPCCATracker();
138 if ( !strcmp( argv[i], "bfield" ) ){
141 Logging( kHLTLogError, "HLT::TPCCATracker::DoInit", "Missing B-field", "Missing B-field specifier." );
144 fBField = strtod( argv[i+1], &cpErr );
147 Logging( kHLTLogError, "HLT::TPCCATracker::DoInit", "Missing multiplicity", "Cannot convert B-field specifier '%s'.", argv[i+1] );
151 Logging( kHLTLogDebug, "HLT::TPCCATracker::DoInit", "Reading command line",
152 "Magnetic field value is set to %f kG", fBField );
158 Logging(kHLTLogError, "HLT::TPCCATracker::DoInit", "Unknown Option", "Unknown option '%s'", argv[i] );
165 int AliHLTTPCCATrackerComponent::DoDeinit()
167 // see header file for class documentation
168 if ( fTracker ) delete fTracker;
173 int AliHLTTPCCATrackerComponent::DoEvent
175 const AliHLTComponentEventData& evtData,
176 const AliHLTComponentBlockData* blocks,
177 AliHLTComponentTriggerData& /*trigData*/,
178 AliHLTUInt8_t* outputPtr,
179 AliHLTUInt32_t& size,
180 vector<AliHLTComponentBlockData>& outputBlocks )
183 AliHLTUInt32_t MaxBufferSize = size;
184 size = 0; // output size
188 // Event reconstruction in one TPC slice with CA Tracker
190 Logging( kHLTLogDebug, "HLT::TPCCATracker::DoEvent", "DoEvent", "DoEvent()" );
191 if ( evtData.fBlockCnt<=0 )
193 Logging( kHLTLogWarning, "HLT::TPCCATracker::DoEvent", "DoEvent", "no blocks in event" );
197 const AliHLTComponentBlockData* iter = NULL;
199 AliHLTTPCClusterData* inPtrSP;
201 // Determine the slice number
205 std::vector<Int_t> slices;
206 std::vector<Int_t>::iterator slIter;
207 std::vector<unsigned> sliceCnts;
208 std::vector<unsigned>::iterator slCntIter;
210 for ( ndx = 0; ndx < evtData.fBlockCnt; ndx++ ){
212 if ( iter->fDataType != AliHLTTPCDefinitions::fgkClustersDataType ) continue;
214 slice = AliHLTTPCDefinitions::GetMinSliceNr( *iter );
217 slCntIter = sliceCnts.begin();
218 for( slIter = slices.begin(); slIter!=slices.end(); slIter++, slCntIter++ ){
219 if ( *slIter == slice ){
225 slices.push_back( slice );
226 sliceCnts.push_back( 1 );
231 // Determine slice number to really use.
232 if ( slices.size()>1 )
234 Logging( kHLTLogError, "HLT::TPCSliceTracker::DoEvent", "Multiple slices found in event",
235 "Multiple slice numbers found in event 0x%08lX (%lu). Determining maximum occuring slice number...",
236 evtData.fEventID, evtData.fEventID );
237 unsigned maxCntSlice=0;
238 slCntIter = sliceCnts.begin();
239 for( slIter = slices.begin(); slIter != slices.end(); slIter++, slCntIter++ )
241 Logging( kHLTLogError, "HLT::TPCSliceTracker::DoEvent", "Multiple slices found in event",
242 "Slice %lu found %lu times.", *slIter, *slCntIter );
243 if ( maxCntSlice<*slCntIter )
245 maxCntSlice = *slCntIter;
249 Logging( kHLTLogError, "HLT::TPCSliceTracker::DoEvent", "Multiple slices found in event",
250 "Using slice %lu.", slice );
252 else if ( slices.size()>0 )
254 slice = *(slices.begin());
259 Logging( kHLTLogWarning, "HLT::TPCCATracker::DoEvent", "DoEvent", "no slices found in event" );
264 // Initialize the tracker
266 Double_t Bz = fBField;
269 if( !fTracker ) fTracker = new AliHLTTPCCATracker;
271 Double_t inRmin = 83.65;
272 // Double_t inRmax = 133.3;
273 // Double_t outRmin = 133.5;
274 Double_t outRmax = 247.7;
275 Double_t plusZmin = 0.0529937;
276 Double_t plusZmax = 249.778;
277 Double_t minusZmin = -249.645;
278 Double_t minusZmax = -0.0799937;
279 Double_t dalpha = 0.349066;
280 Double_t alpha = 0.174533 + dalpha*iSec;
282 Bool_t zPlus = (iSec<18 );
283 Double_t zMin = zPlus ?plusZmin :minusZmin;
284 Double_t zMax = zPlus ?plusZmax :minusZmax;
285 //TPCZmin = -249.645, ZMax = 249.778
286 // Double_t rMin = inRmin;
287 // Double_t rMax = outRmax;
288 Int_t NRows = AliHLTTPCTransform::GetNRows();
290 Double_t padPitch = 0.4;
291 Double_t sigmaZ = 0.228808;
293 Double_t rowX[NRows];
294 for( Int_t irow=0; irow<NRows; irow++){
295 rowX[irow] = AliHLTTPCTransform::Row2X( irow );
298 AliHLTTPCCAParam param;
299 param.Initialize( iSec, NRows, rowX, alpha, dalpha,
300 inRmin, outRmax, zMin, zMax, padPitch, sigmaZ, Bz );
301 param.YErrorCorrection() = 1;
302 param.ZErrorCorrection() = 2;
304 fTracker->Initialize( param );
309 // min and max patch numbers and row numbers
311 Int_t row[2] = {0,0};
312 Int_t minPatch=INT_MAX, maxPatch = -1;
316 Int_t nHitsTotal = 0;
320 std::vector<unsigned long> patchIndices;
322 for ( ndx = 0; ndx < evtData.fBlockCnt; ndx++ ){
324 if( iter->fDataType != AliHLTTPCDefinitions::fgkClustersDataType ) continue;
325 if( slice!=AliHLTTPCDefinitions::GetMinSliceNr( *iter ) ) continue;
326 inPtrSP = (AliHLTTPCClusterData*)(iter->fPtr);
327 nHitsTotal+=inPtrSP->fSpacePointCnt;
328 Int_t patch = AliHLTTPCDefinitions::GetMinPatchNr( *iter );
329 if ( minPatch>patch ){
331 row[0] = AliHLTTPCTransform::GetFirstRow( patch );
333 if ( maxPatch<patch ){
335 row[1] = AliHLTTPCTransform::GetLastRow( patch );
337 std::vector<unsigned long>::iterator pIter = patchIndices.begin();
338 while( pIter!=patchIndices.end() && AliHLTTPCDefinitions::GetMinPatchNr( blocks[*pIter] ) < patch ){
341 patchIndices.insert( pIter, ndx );
345 // pass event to CA Tracker
347 fTracker->StartEvent();
349 AliHLTTPCCAHit vHits[nHitsTotal]; // CA hit array
350 Double_t vHitStoreX[nHitsTotal]; // hit X coordinates
351 Int_t vHitStoreID[nHitsTotal]; // hit ID's
352 Int_t vHitRowID[nHitsTotal]; // hit ID's
356 Logging( kHLTLogDebug, "HLT::TPCCATracker::DoEvent", "Reading hits",
357 "Total %d hits to read for slice %d", nHitsTotal, slice );
361 for( std::vector<unsigned long>::iterator pIter = patchIndices.begin(); pIter!=patchIndices.end(); pIter++ ){
365 Int_t patch = AliHLTTPCDefinitions::GetMinPatchNr( *iter );
366 inPtrSP = (AliHLTTPCClusterData*)(iter->fPtr);
368 Logging( kHLTLogDebug, "HLT::TPCCATracker::DoEvent", "Reading hits",
369 "Reading %d hits for slice %d - patch %d", inPtrSP->fSpacePointCnt, slice, patch );
371 // Read patch hits, row by row
375 Int_t firstRowHit = 0;
376 for (UInt_t i=0; i<inPtrSP->fSpacePointCnt; i++ ){
377 AliHLTTPCSpacePointData* pSP = &(inPtrSP->fSpacePoints[i]);
379 if( pSP->fPadRow != oldRow ){
380 if( oldRow>=0 ) fTracker->ReadHitRow( oldRow, vHits+firstRowHit, nRowHits );
381 oldRow = pSP->fPadRow;
385 AliHLTTPCCAHit &h = vHits[nHits];
386 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;
390 h.ErrY() = TMath::Sqrt(TMath::Abs(pSP->fSigmaY2));
391 h.ErrZ() = TMath::Sqrt(TMath::Abs(pSP->fSigmaZ2));
392 if( h.ErrY()<.1 ) h.ErrY() = .1;
393 if( h.ErrZ()<.1 ) h.ErrZ() = .1;
394 if( h.ErrY()>1. ) h.ErrY() = 1.;
395 if( h.ErrZ()>1. ) h.ErrZ() = 1.;
397 vHitStoreX[nHits] = pSP->fX;
398 vHitStoreID[nHits] = pSP->fID;
399 vHitRowID[nHits] = pSP->fPadRow;
404 if( oldRow>=0 ) fTracker->ReadHitRow( oldRow, vHits+firstRowHit, nRowHits );
407 // reconstruct the event
409 TStopwatch timerReco;
411 fTracker->Reconstruct();
417 Logging( kHLTLogDebug, "HLT::TPCCATracker::DoEvent", "Reconstruct",
418 "%d tracks found for slice %d",fTracker->NOutTracks(), slice);
420 // write reconstructed tracks
422 AliHLTTPCTrackletData* outPtr = (AliHLTTPCTrackletData*)(outputPtr);
424 AliHLTTPCTrackSegmentData* currOutTracklet = outPtr->fTracklets;
426 Int_t ntracks = fTracker->NOutTracks();
428 UInt_t mySize = ((AliHLTUInt8_t *)currOutTracklet) - ((AliHLTUInt8_t *)outputPtr);
430 outPtr->fTrackletCnt = 0;
432 for( int itr=0; itr<ntracks; itr++ ){
434 AliHLTTPCCAOutTrack &t = fTracker->OutTracks()[itr];
436 //Logging( kHLTLogDebug, "HLT::TPCCATracker::DoEvent", "Wrtite output","track %d with %d hits", itr, t.NHits());
438 // calculate output track size
440 UInt_t dSize = sizeof(AliHLTTPCTrackSegmentData) + t.NHits()*sizeof(UInt_t);
442 if( mySize + dSize > MaxBufferSize ){
443 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);
448 // convert CA track parameters to HLT Track Segment
450 Int_t iFirstHit = fTracker->OutTrackHits()[t.FirstHitRef()];
451 Int_t iLastHit = fTracker->OutTrackHits()[t.FirstHitRef()+t.NHits()-1];
453 AliHLTTPCCAHit &firstHit = vHits[iFirstHit];
454 AliHLTTPCCAHit &lastHit = vHits[iLastHit];
456 t.Param().TransportBz(Bz, vHitStoreX[iFirstHit], firstHit.Y(), firstHit.Z() );
458 currOutTracklet->fX = t.Param().Par()[0];
459 currOutTracklet->fY = t.Param().Par()[1];
460 currOutTracklet->fZ = t.Param().Par()[2];
461 Double_t qp = t.Param().Par()[6];
462 Double_t p = TMath::Abs(qp)>1.e-5 ?1./TMath::Abs(qp) :1.e5;
463 Double_t ex = t.Param().Par()[3];
464 Double_t ey = t.Param().Par()[4];
465 Double_t ez = t.Param().Par()[5];
466 Double_t et = TMath::Sqrt( ex*ex + ey*ey );
468 currOutTracklet->fCharge = (qp>0) ?+1 :(qp<0 ?-1 :0);
469 currOutTracklet->fPt = p*et;
471 Double_t h3 = TMath::Abs(ex) >1.e-5 ? p*ex/et :0;
472 Double_t h4 = TMath::Abs(ey) >1.e-5 ? p*ey/et :0;
474 Double_t h6 = - currOutTracklet->fCharge * p * currOutTracklet->fPt;
476 currOutTracklet->fPterr = ( h3*h3*t.Param().Cov()[9] + h4*h4*t.Param().Cov()[14] + h6*h6*t.Param().Cov()[27]
477 + 2.*(h3*h4*t.Param().Cov()[13]+h3*h6*t.Param().Cov()[24]+h4*h6*t.Param().Cov()[25] )
479 currOutTracklet->fPsi = TMath::ATan2(ey, ex);
483 currOutTracklet->fPsierr = h3*h3*t.Param().Cov()[9] + h4*h4*t.Param().Cov()[14] + 2.*h3*h4*t.Param().Cov()[13];
485 currOutTracklet->fTgl = TMath::Abs(et)>1.e-5 ? ez/et :1.e5;
487 if( TMath::Abs(et) >1.e-2 ){
491 currOutTracklet->fTglerr = ( h3*h3*t.Param().Cov()[9] + h4*h4*t.Param().Cov()[14] + h5*h5*t.Param().Cov()[20]
492 + 2.*(h3*h4*t.Param().Cov()[13]+h3*h5*t.Param().Cov()[18]+h4*h5*t.Param().Cov()[19] )
495 currOutTracklet->fTglerr = 1.e-2;
498 currOutTracklet->fCharge = -currOutTracklet->fCharge;
500 t.Param().TransportBz(Bz, vHitStoreX[iLastHit], lastHit.Y(), lastHit.Z() );
502 currOutTracklet->fLastX = t.Param().Par()[0];
503 currOutTracklet->fLastY = t.Param().Par()[1];
504 currOutTracklet->fLastZ = t.Param().Par()[2];
506 #ifdef INCLUDE_TPC_HOUGH
507 #ifdef ROWHOUGHPARAMS
508 currOutTracklet->fTrackID = 0;
509 currOutTracklet->fRowRange1 = vHitRowID[iFirstHit];
510 currOutTracklet->fRowRange2 = vHitRowID[iLastHit];
511 currOutTracklet->fSector = slice;
512 currOutTracklet->fPID = 211;
514 #endif // INCLUDE_TPC_HOUGH
517 currOutTracklet->fNPoints = t.NHits();
519 for( Int_t i=0; i<t.NHits(); i++ ){
520 currOutTracklet->fPointIDs[i] = vHitStoreID[fTracker->OutTrackHits()[t.FirstHitRef()+i]];
523 currOutTracklet = (AliHLTTPCTrackSegmentData*)( (Byte_t *)currOutTracklet + dSize );
525 outPtr->fTrackletCnt++;
529 AliHLTComponentBlockData bd;
533 bd.fSpecification = AliHLTTPCDefinitions::EncodeDataSpecification( slice, slice, minPatch, maxPatch );
534 outputBlocks.push_back( bd );
540 // Set log level to "Warning" for on-line system monitoring
542 Logging( kHLTLogWarning, "HLT::TPCCATracker::DoEvent", "Tracks",
543 "CATracker slice %d: output %d tracks; input %d clusters, patches %d..%d, rows %d..%d; reco time %d/%d us",
544 slice, ntracks, nClusters, minPatch, maxPatch, row[0], row[1], (Int_t) (timer.RealTime()*1.e6), (Int_t) (timerReco.RealTime()*1.e6) );