| 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 *
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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 // This example is provided by the Geant4-DNA collaboration
29 // Any report or published results obtained using the Geant4-DNA software
30 // shall cite the following Geant4-DNA collaboration publication:
31 // Med. Phys. 37 (2010) 4692-4708
32 // The Geant4-DNA web site is available at http://geant4-dna.org
33 //
34 // If you use this example, please cite the following publication:
35 // Rad. Prot. Dos. 133 (2009) 2-11
36 //
37 #include "StepMax.hh"
38 #include "PhysicsListMessenger.hh"
39 #include "G4VPhysicalVolume.hh"
40 #include "G4TransportationProcessType.hh"
41
42 StepMax::StepMax(PhysicsListMessenger* mess)
43 : G4VEmProcess("UserMaxStep", fGeneral),fMessenger(mess),
44 fMaxChargedStep(DBL_MAX),isInitialised(false)
45 {
46 SetProcessSubType(static_cast<G4int>(STEP_LIMITER));
47 }
48
49 StepMax::~StepMax()
50 {}
51
52 G4bool StepMax::IsApplicable(const G4ParticleDefinition& part)
53 {
54 return (part.GetPDGCharge() != 0. && !part.IsShortLived());
55 }
56
57 void StepMax::PreparePhysicsTable(const G4ParticleDefinition&)
58 {
59 if(isInitialised) {
60 isInitialised = false;
61 }
62 }
63
64 void StepMax::BuildPhysicsTable(const G4ParticleDefinition&)
65 {
66 if(!isInitialised) {
67 fMaxChargedStep = fMessenger->GetMaxChargedStep();
68 isInitialised = true;
69 if(fMaxChargedStep < DBL_MAX) {
70 G4cout << GetProcessName() << ": SubType= " << GetProcessSubType()
71 << " Step limit(mm)= " << fMaxChargedStep << G4endl;
72 }
73 }
74 }
75
76 void StepMax::InitialiseProcess(const G4ParticleDefinition*)
77 {}
78
79 G4double
80 StepMax::PostStepGetPhysicalInteractionLength(const G4Track&,
81 G4double,
82 G4ForceCondition* condition)
83 {
84 // condition is set to "Not Forced"
85 *condition = NotForced;
86 return fMaxChargedStep;
87 }
88
89 G4VParticleChange* StepMax::PostStepDoIt(const G4Track& aTrack, const G4Step&)
90 {
91 // do nothing
92 aParticleChange.Initialize(aTrack);
93 return &aParticleChange;
94 }
95
96
97