| Geant4 Cross Reference |
1 //
2 // ********************************************************************
3 // * License and Disclaimer *
4 // * *
5 // * The Geant4 software is copyright of the Copyright Holders of *
6 // * the Geant4 Collaboration. It is provided under the terms and *
7 // * conditions of the Geant4 Software License, included in the file *
8 // * LICENSE and available at http://cern.ch/geant4/license . These *
9 // * include a list of copyright holders. *
10 // * *
11 // * Neither the authors of this software system, nor their employing *
12 // * institutes,nor the agencies providing financial support for this *
13 // * work make any representation or warranty, express or implied, *
14 // * regarding this software system or assume any liability for its *
15 // * use. Please see the license in the file LICENSE and URL above *
16 // * for the full disclaimer and the limitation of liability. *
17 // * *
18 // * This code implementation is the result of the scientific and *
19 // * technical work of the GEANT4 collaboration. *
20 // * By using, copying, modifying or distributing the software (or *
21 // * any work based on the software) you agree to acknowledge its *
22 // * use in resulting scientific publications, and indicate your *
23 // * acceptance of all terms of the Geant4 Software license. *
24 // ********************************************************************
25 //
26 //
27 // -------------------------------------------------------------------
28 //
29 // GEANT4 Class header file
30 //
31 //
32 // File name: G4DynamicParticleMSC
33 //
34 // Author: Vladimir Ivanchenko
35 //
36 // Creation date: 23.08.2024
37 //
38 // Modifications:
39 //
40 //
41 // Class Description:
42 //
43 // This class manages the multiple scattering process for heavy charged
44 // particles without any use of G4ParticleDefinition.
45 //
46 // -------------------------------------------------------------------
47 //
48
49 #ifndef G4DynamicParticleMSC_h
50 #define G4DynamicParticleMSC_h 1
51
52 #include "G4VContinuousDiscreteProcess.hh"
53 #include "G4ParticleChangeForMSC.hh"
54
55 class G4Material;
56 class G4LossTableManager;
57
58 class G4DynamicParticleMSC : public G4VContinuousDiscreteProcess
59 {
60 public:
61
62 G4DynamicParticleMSC();
63
64 ~G4DynamicParticleMSC() override;
65
66 // Step limit from AlongStep
67 G4double AlongStepGetPhysicalInteractionLength(
68 const G4Track&,
69 G4double previousStepSize,
70 G4double currentMinimumStep,
71 G4double& currentSafety,
72 G4GPILSelection* selection) override;
73
74 // Step limit from cross section
75 G4double PostStepGetPhysicalInteractionLength(
76 const G4Track& track,
77 G4double previousStepSize,
78 G4ForceCondition* condition) override;
79
80 // AlongStep computations
81 G4VParticleChange* AlongStepDoIt(const G4Track&, const G4Step&) override;
82
83 // This method is not used for tracking, it returns mean free path value
84 G4double GetMeanFreePath(const G4Track&, G4double, G4ForceCondition* condition) override;
85
86 // This method is not used for tracking, it returns step limit
87 G4double GetContinuousStepLimit(const G4Track& track, G4double previousStepSize,
88 G4double currentMinimalStep, G4double& currentSafety) override;
89
90 // print description in html
91 void ProcessDescription(std::ostream&) const override;
92
93 // hide assignment operator
94 G4DynamicParticleMSC & operator=(const G4DynamicParticleMSC &right) = delete;
95 G4DynamicParticleMSC(const G4DynamicParticleMSC&) = delete;
96
97 private:
98
99 // all parameters are dynamic
100 void PreStepInitialisation(const G4Track&);
101
102 G4LossTableManager* lManager;
103 const G4Material* fMaterial{nullptr};
104
105 G4double fMass{0.0};
106 G4double fCharge{0.0};
107 G4double fEkinPreStep{0.0};
108 G4double fBeta{0.0};
109 G4double fZeff{0.0};
110
111 G4ThreeVector fNewDir{G4ThreeVector(0.0, 0.0, 0.0)};
112 G4ParticleChangeForMSC fParticleChange;
113 };
114
115 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
116
117 #endif
118