[942a705] | 1 | //
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[ff9fb2d9] | 2 | #ifndef G__OBSTRK_H
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| 3 | #define G__OBSTRK_H
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| 4 | #include <TVector3.h>
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| 5 | #include <TVectorD.h>
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| 6 | #include <TMatrixDSym.h>
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[942a705] | 7 | #include <TDecompChol.h>
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| 8 | #include "SolGridCov.h"
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| 9 | //
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[ff9fb2d9] | 10 | // Class to handle smearing of generated charged particle tracks
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[942a705] | 11 | //
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[ff9fb2d9] | 12 | // Author: F. Bedeschi
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| 13 | // INFN - Sezione di Pisa, Italy
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| 14 | //
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| 15 | class ObsTrk{
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[942a705] | 16 | //
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| 17 | // Class to handle simulation of tracking resolution
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| 18 | // Prefix Obs marks variables after resolution smearing
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| 19 | // Prefix Gen marks variables before resolution smearing
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| 20 | //
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| 21 | private:
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| 22 | Double_t fB; // Solenoid magnetic field
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| 23 | SolGridCov *fGC; // Covariance matrix grid
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| 24 | Double_t fGenQ; // Generated track charge
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| 25 | Double_t fObsQ; // Observed track charge
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| 26 | TVector3 fGenX; // Generated track origin (x,y,z)
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| 27 | TVector3 fObsX; // Observed track origin (x,y,z) @ track min. approach
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| 28 | TVector3 fGenP; // Generated track momentum at track origin
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| 29 | TVector3 fObsP; // Observed track momentum @ track minimum approach
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| 30 | TVectorD fGenPar; // Generated helix track parameters (D, phi0, C, z0, cot(th))
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| 31 | TVectorD fGenParACTS; // Generated helix track parameters (D, z0, phi0, th, q/p, time)
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| 32 | TVectorD fObsPar; // Observed helix track parameters (D, phi0, C, z0, cot(th))
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| 33 | TVectorD fObsParACTS; // Observed helix track parameters (D, z0, phi0, th, q/p, time)
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| 34 | TMatrixDSym fCov; // INterpolated covariance of track parameters
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| 35 | TMatrixDSym fCovACTS; // Covariance of track parameters in ACTS format
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| 36 | // (D, z0, phi0, theta, q/p, time)
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| 37 | //
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| 38 | // Conversion to ACTS parametrization
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| 39 | //
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| 40 | TVectorD ParToACTS(TVectorD Par); // Parameter conversion
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| 41 | TMatrixDSym CovToACTS(TMatrixDSym Cov); // Covariance conversion
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| 42 | //
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[ff9fb2d9] | 43 | public:
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[942a705] | 44 | //
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| 45 | // Constructors
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| 46 | // x(3) track origin, p(3) track momentum at origin, Q charge, B magnetic field in Tesla
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| 47 | ObsTrk(TVector3 x, TVector3 p, Double_t Q, Double_t B, SolGridCov *GC); // Initialize and generate smeared track
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| 48 | // Destructor
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| 49 | ~ObsTrk();
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| 50 | //
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| 51 | // Service routines
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| 52 | //
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| 53 | TVectorD XPtoPar(TVector3 x, TVector3 p, Double_t Q);
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| 54 | TVectorD GenToObsPar(TVectorD gPar, SolGridCov *GC);
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| 55 | TVector3 ParToX(TVectorD Par);
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| 56 | TVector3 ParToP(TVectorD Par);
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| 57 | Double_t ParToQ(TVectorD Par);
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| 58 | //
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| 59 | // Accessors
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| 60 | //
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| 61 | // Generator level:
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| 62 | // X, P, Q
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| 63 | Double_t GetGenQ() { return fGenQ; }
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| 64 | TVector3 GetGenX() { return fGenX; }
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| 65 | TVector3 GetGenP() { return fGenP; }
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| 66 | // D, phi0, C, z0, cot(th)
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| 67 | TVectorD GetGenPar() { return fGenPar; }
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| 68 | // D, z0, phi0, theta, q/p, time
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| 69 | TVectorD GetGenParACTS() { return fGenParACTS; }
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| 70 | // Observed level X, P, Q
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| 71 | Double_t GetObsQ() { return fObsQ; }
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| 72 | TVector3 GetObsX() { return fObsX; }
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| 73 | TVector3 GetObsP() { return fObsP; }
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| 74 | // D, phi0, C, z0, cot(th)
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| 75 | TVectorD GetObsPar() { return fObsPar; }
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| 76 | // D, z0, phi0, theta, q/p, time
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| 77 | TVectorD GetObsParACTS() { return fObsParACTS; }
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| 78 | // Covariances
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| 79 | TMatrixDSym GetCov(){ return fCov; }
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| 80 | TMatrixDSym GetCovACTS(){ return fCovACTS; };
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[ff9fb2d9] | 81 | };
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| 82 |
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| 83 | #endif
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