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. *
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8 * documentation strictly for non-commercial purposes is hereby granted *
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11 * appear in the supporting documentation. The authors make no claims *
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14 **************************************************************************/
16 // Static function member
18 // AliTPCCombinedTrackfit
20 // grep "exitreport" in output log to check abnormal termination
22 // Xianguo Lu <lu@physi.uni-heidelberg.de>
25 #ifndef ALITPCCOSMICUTILS_H
26 #define ALITPCCOSMICUTILS_H
28 class AliTPCCosmicUtils
31 static AliTPCseed * GetTPCseed(const AliESDtrack *esdtrack);
33 static AliExternalTrackParam *MakeSeed(const AliTPCseed *tseed);
35 static void SingleFit(AliExternalTrackParam * trackInOld, AliExternalTrackParam * trackOutOld, const AliTPCseed *tseed, const Bool_t kinward, Int_t &nfit, Int_t &nmiss, Double_t &pchi2, TTreeSRedirector *debugstreamer=0x0);
37 static void CombinedFit(AliExternalTrackParam *trackPars[], const AliTPCseed *seeds[], Int_t &nfit, Int_t &nmiss, Double_t &pchi2, TTreeSRedirector *debugstreamer=0x0);
39 static void DrawSeeds(const AliTPCseed * seeds[], const TString tag, const TString outputformat="png");
40 static void PrintTrackParam(const Int_t id, const AliExternalTrackParam * trackpar, const char *tag="");
41 static Int_t RotateSafe(AliExternalTrackParam *trackPar, const Double_t aa);
44 static void IniCov(AliExternalTrackParam *trackPar, const Double_t ncl);
45 static void SubCombined(AliExternalTrackParam *trackPar, const AliTPCseed *seeds[], const Int_t tk0, const Int_t tk1, const Double_t eloss, Int_t &nfit, Int_t &nmiss, Double_t &pchi2, TTreeSRedirector *debugstreamer=0x0);
46 static void FitKernel(AliExternalTrackParam *trackPar, const AliTPCseed *tseed, const Int_t rowstart, const Int_t rowstop, const Double_t eloss, Int_t &ksite, Int_t &nfit, Int_t &nmiss, Double_t &pchi2, TTreeSRedirector *debugstreamer, const Bool_t kinicov);
48 static const Int_t fgkNRow = 159; //number of pad rows
49 static const Int_t fgkNclsMin = 40; //minimum requirement of number of TPC cluster
50 static const Int_t fgkXMin = 80; //minimum x (tracking system) to use in propagation
51 static const Double_t fgkMass = 0.105658; //muon mass
52 static const Int_t fgkNiter = 2; //number of iteration in SingleFit and CombinedFit, 1 is not enough, 3 is the same as 2