| | 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 | |
| | 19 | class TClonesArray; //CkovAngle() |
| | 20 | class AliESDtrack; //CkovAngle() |
| | 21 | |
| | 22 | class AliHMPIDRecon : public TTask |
| | 23 | { |
| | 24 | public : |
| | 25 | AliHMPIDRecon(); |
| | 26 | virtual ~AliHMPIDRecon() {} |
| | 27 | |
| | 28 | |
| | 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 |
| | 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 |
| | 35 | void Propagate (const TVector3 dir, TVector3 &pos,Double_t z )const;//propagate photon alogn the line |
| | 36 | void Refract ( TVector3 &dir, Double_t n1, Double_t n2)const;//refract photon on the boundary |
| | 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 |
| | 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 |
| | 48 | enum ETrackingFlags {kMipDistCut=-9,kMipQdcCut=-5,kNoPhotAccept=-11}; |
| | 49 | |
| | 50 | protected: |
| | 51 | Double_t fRadNmean; //C6F14 mean refractive index |
| | 52 | Int_t fPhotCnt; // counter of photons candidate |
| | 53 | Int_t fPhotFlag[3000]; // flags of photon candidates |
| | 54 | Double_t fPhotCkov[3000]; // Ckov angles of photon candidates, [rad] |
| | 55 | Double_t fPhotPhi [3000]; // phis of photons candidates, [rad] |
| | 56 | Double_t fPhotWei [3000]; // weigths of photon candidates |
| | 57 | Double_t fCkovSigma2; // sigma2 of the reconstructed ring |
| | 58 | |
| | 59 | Bool_t fIsWEIGHT; // flag to consider weight procedure |
| | 60 | Float_t fDTheta; // Step for sliding window |
| | 61 | Float_t fWindowWidth; // Hough width of sliding window |
| | 62 | |
| | 63 | TVector3 fTrkDir; //track direction in LORS at RAD |
| | 64 | TVector2 fTrkPos; //track positon in LORS at RAD |
| | 65 | TVector2 fPc; //track position at PC |
| | 66 | |
| | 67 | private: |
| | 68 | static const Double_t fgkRadThick; //radiator thickness |
| | 69 | static const Double_t fgkWinThick; //window thickness |
| | 70 | static const Double_t fgkGapThick; //proximity gap thickness |
| | 71 | static const Double_t fgkWinIdx; //mean refractive index of WIN material (SiO2) |
| | 72 | static const Double_t fgkGapIdx; //mean refractive index of GAP material (CH4) |
| | 73 | |
| | 74 | ClassDef(AliHMPIDRecon,0) |
| | 75 | }; |
| | 76 | |
| | 77 | #endif // #ifdef AliHMPIDRecon_cxx |
| | 78 | |
git://git.uio.no / u / mrichter / AliRoot.git / blame_incremental