Coding convention
[u/mrichter/AliRoot.git] / HMPID / AliHMPIDRecon.h
CommitLineData
d3da6dc4 1#ifndef AliHMPIDRecon_h
2#define AliHMPIDRecon_h
3
4/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
5 * See cxx source for full Copyright notice */
6
7//////////////////////////////////////////////////////////////////////////
8// //
9// AliHMPIDRecon //
10// //
11// HMPID class to perfom pattern recognition based on Hough transfrom //
12// //
13//////////////////////////////////////////////////////////////////////////
14
15
16#include <TTask.h> //base class
17#include <TVector3.h> //fields
18
59280a5a 19class TClonesArray; //CkovAngle()
20class AliESDtrack; //CkovAngle()
21
d3da6dc4 22class AliHMPIDRecon : public TTask
23{
24public :
25 AliHMPIDRecon();
26 virtual ~AliHMPIDRecon() {}
27
28
a591e55f 29 void CkovAngle (AliESDtrack *pTrk,TClonesArray *pCluLst,Double_t nmean ); //reconstructed Theta Cerenkov
30 Bool_t FindPhotCkov (Double_t cluX,Double_t cluY,Double_t &thetaCer,Double_t &phiCer ); //find ckov angle for single photon candidate
d3da6dc4 31 Double_t FindRingCkov (Int_t iNclus ); //best ckov for ring formed by found photon candidates
32 Double_t FindRingArea (Double_t ckov )const;//estimated area of ring in cm^2
33 Int_t FlagPhot (Double_t ckov ); //is photon ckov near most probable track ckov
34 Double_t HoughResponse( ); //most probable track ckov angle
a591e55f 35 void Propagate (const TVector3 dir, TVector3 &pos,Double_t z )const;//propagate photon alogn the line
d3da6dc4 36 void Refract ( TVector3 &dir, Double_t n1, Double_t n2)const;//refract photon on the boundary
a591e55f 37 TVector2 TracePhot (Double_t ckovTh,Double_t ckovPh )const;//trace photon created by track to PC
38 TVector2 TraceForward (TVector3 dirCkov )const;//tracing forward a photon from (x,y) to PC
39 void RecPhot (TVector3 dirCkov,Double_t &thetaCer,Double_t &phiCer ); //theta,phi cerenkov reconstructed
40 void SetTrack (Double_t xRad,Double_t yRad,Double_t theta,Double_t phi )
41 {fTrkDir.SetMagThetaPhi(1,theta,phi); fTrkPos.Set(xRad,yRad);} //set track parameter at RAD
42 void SetImpPC (Double_t xPc,Double_t yPc )
43 {fPc.Set(xPc,yPc);} //set track impact to PC
d3da6dc4 44 Double_t SigLoc (Double_t ckovTh,Double_t ckovPh,Double_t beta )const;//error due to cathode segmetation
45 Double_t SigGeom (Double_t ckovTh,Double_t ckovPh,Double_t beta )const;//error due to unknown photon origin
46 Double_t SigCrom (Double_t ckovTh,Double_t ckovPh,Double_t beta )const;//error due to unknonw photon energy
47 Double_t Sigma2 (Double_t ckovTh,Double_t ckovPh )const;//photon candidate sigma
59280a5a 48 enum ETrackingFlags {kMipDistCut=-9,kMipQdcCut=-5,kNoPhotAccept=-11};
423554a3 49
50private:
869a8c81 51 static const Double_t fgkRadThick; //radiator thickness
52 static const Double_t fgkWinThick; //window thickness
53 static const Double_t fgkGapThick; //proximity gap thickness
869a8c81 54 static const Double_t fgkWinIdx; //mean refractive index of WIN material (SiO2)
55 static const Double_t fgkGapIdx; //mean refractive index of GAP material (CH4)
394d35c1 56protected:
abb5f786 57 Double_t fRadNmean; //C6F14 mean refractive index
d3da6dc4 58 Int_t fPhotCnt; // counter of photons candidate
59 Int_t fPhotFlag[3000]; // flags of photon candidates
60 Double_t fPhotCkov[3000]; // Ckov angles of photon candidates, [rad]
61 Double_t fPhotPhi [3000]; // phis of photons candidates, [rad]
62 Double_t fPhotWei [3000]; // weigths of photon candidates
63 Double_t fCkovSigma2; // sigma2 of the reconstructed ring
64
65 Bool_t fIsWEIGHT; // flag to consider weight procedure
66 Float_t fDTheta; // Step for sliding window
67 Float_t fWindowWidth; // Hough width of sliding window
68
a591e55f 69 TVector3 fTrkDir; //track direction in LORS at RAD
70 TVector2 fTrkPos; //track positon in LORS at RAD
71 TVector2 fPc; //track position at PC
d3da6dc4 72 ClassDef(AliHMPIDRecon,0)
73};
cf7e313e 74
d3da6dc4 75#endif // #ifdef AliHMPIDRecon_cxx
76