| Geant4 Cross Reference |
1 =========================================
2 Geant4 - an Object-Oriented Toolkit for S
3 =========================================
4
5
6 Example extensibleFactory
7
8 R. Hatcher
9 Fermilab
10 (based on Hadr00 by V. Ivantchenko, CERN)
11
12 Examples in the physicslist category show the
13 a physics list from Geant4 physics constructor
14 the usage of g4alt::G4PhysListFactory to build
15
16 Physics List can be defined by its name given
17 run command or by the PHYSLIST environment var
18
19 ./extensibleFactory -m my.macro [ -p QGSP_B
20 [ -v | --verbose ] [ -h | --help ]
21
22 By default, FTFP_BERT Physics List will be ins
23 -p argument is not set and the PHYSLIST enviro
24 This is the system default, but can be overrid
25 SetDefaultReferencePhysList() method on the fa
26
27 The extensible factory allows users to define
28 lists. This example shows the addtional a new
29
30 ./extensibleFactory -m run.mac -p MySpecial
31
32 The extensible factory also allows for the ext
33 (using "+" as a separator) or replacing (using
34 specific physics constructors. These can be s
35 pre-defining a short name (e.g. RADIO for G4Ra
36 providing the full class name.
37
38 ./extensibleFactory -m run.mac -p FTFP_BERT
39
40 uses the FTFP_BERT physics list as a base
41 * replaces the list's standard EM portion wi
42 G4EmStandardPhysics_option2 ( standard
43 * adds G4OpticalPhysics
44 * adds G4RadioactiveDecayPhysics (RADIO defi
45
46 The same experimental setup is used for all ex
47 category:
48
49 1- Detector description
50 -----------------------
51
52 The geometry (defined in the DetectorConstruct
53 scintillator material (CsI) followed by a thin
54 to simplify scoring.
55
56
57 2- Primary generator
58 --------------------
59
60 The primary generator is defined with usage of
61 The default particle is proton which hits the
62 The type of the particle and its energy are se
63 be changed via the G4 built-in commands of the
64
65
66 3- Scoring (ntuples)
67 --------------------
68
69 The screen volume is associated with a sensiti
70 which accounts the following particle properti
71 - trackID
72 - particle PDG encoding
73 - particle kinetic energy
74 - particle X,Y position
75 - particle time
76
77 The scored quantities are filled in the Screen
78 in RunAction class. The ntuple is saved in a R
79 example name in main () function.
80
81 4- How to build
82 ----------------
83
84 An additional step is needed when building the
85 due to using the extra shared directory:
86 % cd path_to_example/example
87 % gmake setup
88 % gmake
89
90 This will copy the files from shared in the ex
91 to remove these files:
92 % gmake clean_setup
93