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Tracker.h
Go to the documentation of this file. Or view the newest version in sPHENIX GitHub for file Tracker.h
1 
10 #ifndef INCLUDE_EICSMEAR_SMEAR_TRACKER_H_
11 #define INCLUDE_EICSMEAR_SMEAR_TRACKER_H_
12 
13 #include <Rtypes.h> // For ClassDef
14 
15 #include "eicsmear/smear/Distributor.h"
16 #include "eicsmear/smear/Smear.h" // KinType
17 #include "eicsmear/smear/Smearer.h"
18 
19 namespace erhic {
20 
21 class VirtualParticle;
22 
23 } // namespace erhic
24 
25 namespace Smear {
26 
27 class ParticleMCS;
28 
35 class Tracker : public Smearer {
36  public:
40  Tracker(double magneticField = 2., double nRadiationLengths = 0.01,
41  double resolution = 0.001);
42 
46  virtual ~Tracker();
47 
51  virtual double Resolution(const erhic::VirtualParticle&) const;
52 
57  void Smear(const erhic::VirtualParticle&, ParticleMCS&);
58 
62  virtual double L(const erhic::VirtualParticle&) const = 0;
63 
68  virtual double LPrime(const erhic::VirtualParticle&) const = 0;
69 
73  virtual int NPoints(const erhic::VirtualParticle&) const = 0;
74 
79  virtual bool Accepts(const erhic::VirtualParticle&) const = 0;
80 
84  virtual double GetThetaMin() const = 0;
85 
89  virtual double GetThetaMax() const = 0;
90 
97  void SetVertexConstraint(bool constrain);
98 
99  protected:
106  virtual double MultipleScatteringContribution(
107  const erhic::VirtualParticle&) const;
108 
114  virtual double IntrinsicContribution(const erhic::VirtualParticle&) const;
115 
116  Int_t mFactor;
117 
118  double mMagField;
119  double mNRadLengths;
120  double mSigmaRPhi;
121  Distributor Distribution;
122 
123  ClassDef(Smear::Tracker, 1)
124 };
125 
126 } // namespace Smear
127 
128 #endif // INCLUDE_EICSMEAR_SMEAR_TRACKER_H_