4 #ifndef ALIHLTTPCSLICETRACKERCOMPONENT_H
5 #define ALIHLTTPCSLICETRACKERCOMPONENT_H
6 //* This file is property of and copyright by the ALICE HLT Project *
7 //* ALICE Experiment at CERN, All rights reserved. *
8 //* See cxx source for full Copyright notice *
10 /** @file AliHLTTPCSliceTrackerComponent.h
11 @author Timm Steinbeck, Matthias Richter
13 @brief The TPC conformal mapping tracker component.
16 #include "AliHLTProcessor.h"
18 class AliHLTTPCConfMapper;
19 class AliHLTTPCVertex;
20 class AliHLTTPCInterMerger;
23 * @class AliHLTTPCSliceTrackerComponent
24 * The TPC conformal mapping tracker component.
26 * Component ID: \b TPCSliceTracker <br>
27 * Library: \b libAliHLTTPC.
29 * Mandatory arguments: <br>
30 * \li -bfield <i> magnetic field </i> <br>
31 * should allways be used. If there is no magnetic field, use 0.00001
33 * Optional arguments: <br>
35 * will give fixed trackparameters for p-p runs.
37 * will give fixed trackparameters for Pb-Pb runs.
38 * \li -multiplicity <i> multiplicity </i> <br>
39 * set the multiplicity of your collitions. Used for Pb-Pb events.
40 * \li -disable-merger <br>
41 * turns off the intermerging on sectorlevel. Only use in spacial cases.
42 * \li -nonvertextracking <br>
43 * the tracking will do a reconstruction of clusters without vertex constraint.
44 * \li -mainvertextrackingoff <br>
45 * will turn off the tracking with vertex constraint. Use together with -nonvertextracking.
46 * \li -etarange <i> eta range </i> <br>
47 * sets the eta range for the tracking.
48 * \li -etasegment <i> eta segments </i> <br>
49 * let you set the number of eta segments in the trscker.
50 * \li -chi2cut <i> chiĀ² </i> <br>
51 * set the chiĀ² for the tracker.
52 * \li -rowscopetracklet <i> number of padrows </i> <br>
53 * tells the tracker how many padrows down it should look for the next cluster when making tracklets.
54 * \li -rowscopetrack <i> number of padrows </i> <br>
55 * tells the tracker how many padrows down it should look for the next cluster when making track.
56 * \li -trackletlength <i> number of clusters </i> <br>
57 * the minimum number of clusters to be on a tracklet.
58 * \li -tracklength <i> number of clusters </i> <br>
59 * the minimum number of clusters to be on a track.
60 * \li -clusterZ <i> cutoff in z-direction (cm) </i> <br>
61 * makes the tracker to not read in Clusters with a higher value then the
62 * one given in both directions
64 * @ingroup alihlt_tpc_components
66 class AliHLTTPCSliceTrackerComponent : public AliHLTProcessor
69 /** default constructor */
70 AliHLTTPCSliceTrackerComponent();
72 virtual ~AliHLTTPCSliceTrackerComponent();
74 // Public functions to implement AliHLTComponent's interface.
75 // These functions are required for the registration process
77 /** interface function, see AliHLTComponent for description */
78 const char* GetComponentID();
79 /** interface function, see AliHLTComponent for description */
80 void GetInputDataTypes(AliHLTComponentDataTypeList& list);
81 /** interface function, see AliHLTComponent for description */
82 AliHLTComponentDataType GetOutputDataType();
83 /** interface function, see AliHLTComponent for description */
84 virtual void GetOutputDataSize( unsigned long& constBase, double& inputMultiplier );
85 /** interface function, see AliHLTComponent for description */
86 AliHLTComponent* Spawn();
91 * Set Tracker parameters
92 * Knowledge on that has been lost, so somebody has to insert more
95 void SetTrackerParam(Int_t phiSegments=50,Int_t etaSegments=100,
96 Int_t trackletlength=3,Int_t tracklength=5,
97 Int_t rowscopetracklet=2,Int_t rowscopetrack=3,
98 Double_t minPtFit=0,Double_t maxangle=1.31,
99 Double_t goodDist=5,Double_t hitChi2Cut=10,
100 Double_t goodHitChi2=20,Double_t trackChi2Cut=50,
101 Int_t maxdist=50,Double_t maxphi=0.1,Double_t maxeta=0.1);
104 * Set Tracker parameters
105 * Knowledge on that has been lost, so somebody has to insert more
108 void SetTrackerParam( Bool_t doPP, Bool_t doPbPb, Int_t multiplicity,
109 Double_t bField, Int_t etasegment, Double_t hitchi2cut,
110 Int_t rowscopetracklet, Int_t rowscopetrack,
111 Int_t trackletlength, Int_t tracklength );
114 * Set default tracker parameters
115 * Knowledge on that has been lost, so somebody has to insert more
118 void SetTrackerParam1();
120 // Protected functions to implement AliHLTComponent's interface.
121 // These functions provide initialization as well as the actual processing
122 // capabilities of the component.
124 /** interface function, see AliHLTComponent for description */
125 int DoInit( int argc, const char** argv );
126 /** interface function, see AliHLTComponent for description */
128 /** interface function, see AliHLTComponent for description */
129 int DoEvent( const AliHLTComponentEventData& evtData, const AliHLTComponentBlockData* blocks,
130 AliHLTComponentTriggerData& trigData, AliHLTUInt8_t* outputPtr,
131 AliHLTUInt32_t& size, AliHLTComponentBlockDataList& outputBlocks );
133 int Reconfigure(const char* cdbEntry, const char* chainId);
134 int ReadPreprocessorValues(const char* modules);
136 using AliHLTProcessor::DoEvent;
139 /** copy constructor prohibited */
140 AliHLTTPCSliceTrackerComponent(const AliHLTTPCSliceTrackerComponent&);
141 /** assignment operator prohibited */
142 AliHLTTPCSliceTrackerComponent& operator=(const AliHLTTPCSliceTrackerComponent&);
144 * Configure the component.
145 * Parse a string for the configuration arguments and set the component
148 int Configure(const char* arguments);
150 /** instance of the tracker */
151 AliHLTTPCConfMapper* fTracker; //! transient
153 AliHLTTPCVertex* fVertex; //! transient
155 Float_t fEta[2]; // see above
156 /** switch for subsequent non-vertex tracking */
157 Bool_t fDoNonVertex; // see above
159 Bool_t fDoPP; // see above
161 Bool_t fDoPbPb; // see above
162 /** multiplicity estimate */
163 Int_t fMultiplicity; // see above
164 /** magnetic field */
165 Double_t fBField; // see above
167 Bool_t fnonvertextracking; // enable NONVERTEX Tracking
168 Bool_t fmainvertextracking; // enable MAINVERTEX Tracking
170 /** ParameterVariables for the trackeparameters */
173 /** phi_segments: Devide the space into phi_segments */
174 Int_t fPhisegment; //! transient
175 /** ets_segments: Devide the space into eta_segments */
176 Int_t fEtasegment; //! transient
177 /** trackletlength: Number of hits a tracklet has to have */
178 Int_t fTrackletlength; //! transient
179 /** tracklength: Number of hits a track has to have */
180 Int_t fTracklength; //! transient
181 /** rowscopetracklet: Search range of rows for a tracklet */
182 Int_t fRowscopetracklet; //! transient
183 /** rowscopetrack: Search range of rows for a track */
184 Int_t fRowscopetrack; //! transient
185 /** min_pt_fit: Cut for moment fit, use:SetMaxDca(min_pt_fit) */
186 Double_t fMinPtFit; //! transient
187 /** maxangle: AliHLTTPCTransform::Deg2Rad(10), max angle for the three point look aheand */
188 Double_t fMaxangle; //! transient
189 /** goodDist: Threshold distancs between two hits when building tracklets */
190 Double_t fGoodDist; //! transient
191 /** hitChi2Cut: Max chi2 of added hit to track */
192 Double_t fHitChi2Cut; //! transient
193 /** goodHitChi2: Stop looking for next hit to add if chi2 is less then goodHitChi2 */
194 Double_t fGoodHitChi2; //! transient
195 /** trackChi2Cut: Max chi2 for track after final fit */
196 Double_t fTrackChi2Cut; //! transient
197 /** maxdist: Maximum distance between two clusters when forming segments */
198 Int_t fMaxdist; //! transient
199 /** maxphi: Max phi difference for neighboring hits */
200 Double_t fMaxphi; //! transient
201 /** maxeta: Max eta difference for neighboring hits */
202 Double_t fMaxeta; //! transient
205 AliHLTTPCInterMerger *fpInterMerger; //! transient
207 ClassDef(AliHLTTPCSliceTrackerComponent, 0);