| Geant4 Cross Reference |
1 Example GB07 : leading particl
2 ------------------------------
3
4 This example illustrates how to use the le
5
6 It uses the G4BOptnLeadingParticle biasing
7
8 source/processes/biasing/
9
10 and defines the following biasing operation to
11
12 GB07OptrLeadingParticl
13
14 As a reminder, the generic biasing scheme
15 that takes decisions on what sort of biasing t
16 techniques are called biasing operations, repr
17 class. The operator is attached to a logical v
18 happen. Decisions are made on requests of the
19 that messages the operator when the track is t
20 the phyics list with this process, the G4Gener
21 constructor is used. In this example, several
22 is applied- are wrapped by this process to con
23 for applying the biasing technique.
24
25
26 Geometry:
27 ---------
28
29 The geometry is simply :
30 - a volume in which the biasing occurs and
31 GB07OptrLeadingParticle is attached,
32 - a thin volume placed after the above vol
33 particles exiting biasing volume.
34 - a sensitive detector is attached to the
35 particles entering here. In particular t
36 this one is obtained by:
37
38 w = track->GetWeight()
39
40
41 Biasing configuration:
42 ----------------------
43
44 The particle types and processes under the
45 visible in the main program exampleGB07.cc, th
46
47 pi+ and pi-, inelastic proc
48 proton and anti-proton, inelastic process,
49 neutron, inelastic and captur
50 anti-neutron, inelastic process,
51
52 gamma, conversion and photo
53 electron, electronNuclear proc
54 positron, annihilation and pos
55
56 pi0, decay process.
57
58 For the inelastic and lepto/gamma-nuclear
59 classical way:
60 - keep the leading particle,
61 - keep one particle of each species (particl
62 species, and all hadrons with Z>=2 are counted
63 For e+, e-, gamma and pi0 processes (which
64 and pi0 decay processes), the leading particle
65 kept/killed under a Russian roulette, with a 2
66 GB07BOptrLeadingParticle::StartTracking( ... )
67
68
69 Running the program:
70 --------------------
71
72 The program can be run in batch or interac
73
74 in batch:
75 ./exampleGB07 [-m macro ] [-b bia
76 or
77 ./exampleGB07 [macro.mac]
78 interactive:
79 ./exampleGB07 [-b biasing
80
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