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1 -------------------------------------------------------------------
2
3 =========================================================
4 Geant4 - an Object-Oriented Toolkit for Simulation in HEP
5 =========================================================
6
7 chem1
8 -------
9
10 This example is provided by the Geant4-DNA collaboration.
11
12 These processes and models are further described at:
13 http://geant4-dna.org
14
15 Any report or published results obtained using the Geant4-DNA software shall
16 cite the following Geant4-DNA collaboration publications:
17 Phys. Med. 31 (2015) 861-874
18 Med. Phys. 37 (2010) 4692-4708
19
20 How to activate chemistry code.
21
22 1 - GEOMETRY DEFINITION
23
24 It is a simple box which represents a 'semi infinite' homogeneous medium.
25
26 Two parameters define the geometry :
27 - the material of the box -- for Geant4-DNA it has to be water.
28 - the full size of the box.
29
30 The default geometry is constructed in DetectorConstruction class.
31
32 2 - PHYSICS LIST
33
34 PhysicsList is Geant4 modular physics list using G4EmDNAPhysics &
35 G4EmDNAChemistry constructors.
36
37 3 - AN EVENT: THE PRIMARY GENERATOR
38
39 The primary kinematic consists of a single particle starting at the center of
40 the box. The type of the particle and its energy are set in the
41 PrimaryGeneratorAction class, and can be changed via the G4 build-in commands
42 of G4ParticleGun class.
43 The chemistry module is triggered in the StackingAction class when all
44 physical tracks have been processed.
45
46 4 - OUTPUT
47
48 Physics initialization and the defined reaction table are printed.
49 G4ITStepManager processes the chemical stage time step after time step.
50 Chemical reactions are printed.
51
52 5 - HOW TO START ?
53
54 To run the example in batch mode:
55 ./chem1 -mac beam.in
56 or
57 ./chem1
58 then the macro beam.in is processed by default
59
60 In interactive mode, run:
61 ./chem1 -gui
62 or
63 ./chem1 -gui gui.mac
