| 1 | #ifndef _BFIELD_PROP_H_
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| 2 | #define _BFIELD_PROP_H_
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| 3 |
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| 4 | /*
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| 5 | * ---- Delphes ----
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| 6 | * A Fast Simulator for general purpose LHC detector
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| 7 | * S. Ovyn ~~~~ severine.ovyn@uclouvain.be
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| 8 | *
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| 9 | * Center for Particle Physics and Phenomenology (CP3)
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| 10 | * Universite Catholique de Louvain (UCL)
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| 11 | * Louvain-la-Neuve, Belgium
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| 12 | * */
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| 13 |
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| 14 | #include "TLorentzVector.h"
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| 15 | #include "SmearUtil.h"
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| 16 | #include "BlockClasses.h"
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| 17 | #include "TSimpleArray.h"
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| 18 |
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| 19 | using namespace std;
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| 20 |
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| 21 | class TrackPropagation {
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| 22 |
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| 23 | public:
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| 24 | // Constructor
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| 25 | TrackPropagation();
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| 26 | TrackPropagation(const string& DetDatacard);
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| 27 | TrackPropagation(const RESOLution * DetDatacard);
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| 28 | TrackPropagation(const TrackPropagation & tp);
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| 29 | TrackPropagation& operator=(const TrackPropagation & tp);
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| 30 | ~TrackPropagation() {delete DET;};
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| 31 | void init(); // for constructors
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| 32 |
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| 33 | // Propagation and bfield are very similar. At the end, after code cleaning,
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| 34 | // onle bfield will remain in this class
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| 35 | void Propagation(const TRootGenParticle *Part,TLorentzVector &genMomentum);
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| 36 | void bfield(const TRootGenParticle *Part, float& etacalo, float& phicalo);
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| 37 |
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| 38 |
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| 39 | private:
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| 40 | unsigned int MAXITERATION;
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| 41 | RESOLution *DET;
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| 42 |
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| 43 |
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| 44 | /// radial/longitudinal extensions of magnetic field volume
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| 45 | double R_max, z_max;
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| 46 | /// magnetic field components
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| 47 | double B_x, B_y, B_z;
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| 48 | /// particle charge
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| 49 | double q;
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| 50 | /// initial coordinate
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| 51 | double phi_0;
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| 52 | /// relativistic gamma \times m
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| 53 | double gammam;
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| 54 | /// giration frequency and radius
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| 55 | double omega, r;
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| 56 | /// center of the helix in the transverse plane
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| 57 | double x_c, y_c, R_c, Phi_c;
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| 58 | // variable for an intermediate computing
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| 59 | double rr;
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| 60 | /// times for exiting the magnetic field volume
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| 61 | double t, t_z, t_T;
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| 62 | /// coordinates of the exit point
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| 63 | double x_t, y_t, z_t, R_t, Phi_t, Theta_t, Eta_t;
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| 64 | /// energy-momentum of the exit point [Gev] et c=1
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| 65 | double Px_t, Py_t, Pz_t, PT_t, p_t, E_t;
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| 66 |
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| 67 | unsigned int loop_overflow_counter;
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| 68 | };
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| 69 |
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| 70 | #endif
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| 71 |
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| 72 |
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