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G4StokesVector.hh
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26 // $Id: G4StokesVector.hh 108422 2018-02-13 11:17:20Z gcosmo $
27 //
28 // GEANT4 Class header file
29 //
30 // File name: G4StokesVector
31 //
32 // Author: Andreas Schaelicke
33 //
34 // Creation date: 01.05.2005
35 //
36 // Modifications:
37 // 27-07-06 added some test routines (P.Starovoitov)
38 // 25-08-06 modified name of test routines (A.Schaelicke)
39 //
40 // Class Description:
41 //
42 // Provides Stokesvector representation employed in implementation of
43 // polarized processes.
44 //
45 // aim:
46 // - store three components of a stokesvector
47 // - distinguish between boson or fermion state (different transformations)
48 // - provide unique definition of reference frame (cf. G4PolarizationHelper)
49 //
50 
51 #ifndef G4StokesVector_h
52 #define G4StokesVector_h 1
53 
54 #include "G4ThreeVector.hh"
55 #include "G4RotationMatrix.hh"
56 
57 
59 {
60  public:
61  // standard vectors:
62  static const G4StokesVector ZERO;
63  static const G4StokesVector P1;
64  static const G4StokesVector P2;
65  static const G4StokesVector P3;
66  static const G4StokesVector M1;
67  static const G4StokesVector M2;
68  static const G4StokesVector M3;
69 public:
71  G4StokesVector(const G4ThreeVector & v);
72  ~G4StokesVector() = default;
73 
74  G4bool IsZero() const;
75 
76  inline G4double p1() const { return x(); }
77  inline G4double p2() const { return y(); }
78  inline G4double p3() const { return z(); }
79 
80  inline G4double Transverse() const { return perp(); }
81 
82  inline G4ThreeVector PolSqr() const {
83  return G4ThreeVector(x()*x(),y()*y(),z()*z());
84  }
85  inline G4ThreeVector PolSqrt() const {
86  return G4ThreeVector(std::sqrt(x()),std::sqrt(y()),std::sqrt(z()));
87  }
88  G4ThreeVector PolError(const G4StokesVector & sum2, long n);
89 
90  // Ratio of 3-vectors.
92 
93  inline void SetPhoton() { isPhoton=true; }
94 
95  void RotateAz(G4ThreeVector nInteractionFrame,
96  G4ThreeVector particleDirection);
97  void InvRotateAz(G4ThreeVector nInteractionFrame,
98  G4ThreeVector particleDirection);
99  void RotateAz(G4double cosphi, G4double sinphi);
100  G4double GetBeta();
101 
102  void DiceUniform();
103  void DiceP1();
104  void DiceP2();
105  void DiceP3();
106 
107  void FlipP3();
108 private:
110 };
111 
112 
113 #endif
G4bool IsZero() const
static const G4StokesVector M1
double perp() const
CLHEP::Hep3Vector G4ThreeVector
static const G4StokesVector P2
G4double GetBeta()
static const G4StokesVector M2
G4double p3() const
double z() const
~G4StokesVector()=default
G4double p1() const
G4ThreeVector PolSqr() const
G4double Transverse() const
double G4double
Definition: G4Types.hh:76
bool G4bool
Definition: G4Types.hh:79
G4ThreeVector PolError(const G4StokesVector &sum2, long n)
static const G4StokesVector P3
void InvRotateAz(G4ThreeVector nInteractionFrame, G4ThreeVector particleDirection)
void RotateAz(G4ThreeVector nInteractionFrame, G4ThreeVector particleDirection)
G4ThreeVector PolDiv(const G4StokesVector &)
static const G4StokesVector M3
static const G4StokesVector ZERO
G4ThreeVector PolSqrt() const
double x() const
static const G4StokesVector P1
G4double p2() const
Char_t n[5]
double y() const