| Geant4 Cross Reference |
1 =========================================
2 Geant4 - microdosimetry example
3 =========================================
4
5 README file
6 --------------------
7
8 CORRESPONDING AUTHO
9
10 S. Incerti (a, *), H. Tran (a, *), V. Ivantche
11 a. LP2i, IN2P3 / CNRS / Bordeaux University, 3
12 b. G4AI Ltd., UK
13 * e-mail: incerti@lp2ib.in2p3.fr or tran@lp2ib
14
15 ---->0. INTRODUCTION
16
17 The microdosimetry example shows how to use Ge
18 in different regions of the geometry.
19
20 The Geant4-DNA processes and models are furthe
21 http://geant4-dna.org
22
23 Any report or published results obtained using
24 cite the following Geant4-DNA collaboration pu
25 Med. Phys. 51 (2024) 5873–5889
26 Med. Phys. 45 (2018) e722-e739
27 Phys. Med. 31 (2015) 861-874
28 Med. Phys. 37 (2010) 4692-4708
29 Int. J. Model. Simul. Sci. Comput. 1 (2010) 15
30
31 ---->1. GEOMETRY SET-UP
32
33 The geometry is a 10-micron side cube (World)
34 material) containing a 2 micron-thick slice (a
35
36 Particles are shot from the World volume.
37
38 The variable density feature of materials is i
39 The material can be changed directly in microd
40
41 ---->2. SET-UP
42
43 Make sure $G4LEDATA points to the low energy e
44
45 ---->3. HOW TO RUN THE EXAMPLE
46
47 In interactive mode, run:
48
49 ./microdosimetry
50
51 In batch, the macro microdosimetry.in can be u
52 particle types.
53
54 ---->4. PHYSICS
55
56 The PhysicsList uses Geant4 Physics in the Wor
57 in the Target region.
58
59 1) Geant4 Physics in the World is selected via
60
61 /dna/test/addPhysics X
62
63 where X is any EM physics list, such as emstan
64
65 2) Geant4-DNA activator is used in the regionT
66
67 /process/em/AddDNARegion regionTarget DNA_OptY
68
69 where Y = 0, 2, 4, or 6.
70
71 3) In addition to 1) or 2), to enable radioact
72
73 /dna/test/addPhysics raddecay
74
75 4) Warning regarding ions: when the incident p
76 (/gun/particle ion), specified with Z and A nu
77 the Rudd ionisation extended model is used. Th
78 by default down to 0.5 MeV/u. This tracking cu
79
80 /dna/test/addIonsTrackingCut false
81
82
83 ---->5. SIMULATION OUTPUT AND RESULT ANALYSIS
84
85 The output results consists in a dna.root file
86 - the type of particle for the current step
87 - the type of process for the current step
88 - the step PostStepPoint coordinates (in nm)
89 - the energy deposit along the current step (i
90 - the step length (in nm)
91 - the total energy loss along the current step
92 - the kinetic energy at PreStepPoint (in eV)
93 - the cos of the scattering angle
94 - the event ID
95 - the track ID
96 - the parent track ID
97 - the step number
98
99 This information is extracted from the Steppin
100
101 The ROOT file can be easily analyzed using for
102 file plot.C; to do so :
103 * be sure to have ROOT installed on your machi
104 * be sure to be in the directory containing th
105 * copy plot.C into this directory
106 * from there, launch ROOT by typing root
107 * under your ROOT session, type in : .X plot.C
108 * alternatively you can type directly under yo
109
110 The naming scheme on the displayed ROOT plots
111
112 -particles
113
114 gamma: 0
115 e-: 1
116 proton: 2
117 hydrogen: 3
118 alpha: 4
119 alpha+: 5
120 helium: 6
121
122 -processes
123
124 Capture: 1
125 (only if one uses G4EmmicrodosimetryActivator
126
127 e-_G4DNAElectronSolvation: 10
128 e-_G4DNAElastic: 11
129 e-_G4DNAExcitation: 12
130 e-_G4DNAIonisation: 13
131 e-_G4DNAAttachment: 14
132 e-_G4DNAVibExcitation: 15
133 msc: 110
134 CoulombScat: 120
135 eIoni: 130
136
137 proton_G4DNAElastic: 21
138 proton_G4DNAExcitation: 22
139 proton_G4DNAIonisation: 23
140 proton_G4DNAChargeDecrease: 24
141 msc: 210
142 CoulombScat: 220
143 hIoni: 230
144 nuclearStopping: 240
145
146 hydrogen_G4DNAElastic: 31
147 hydrogen_G4DNAExcitation: 32
148 hydrogen_G4DNAIonisation: 33
149 hydrogen_G4DNAChargeIncrease: 35
150
151 alpha_G4DNAElastic: 41
152 alpha_G4DNAExcitation: 42
153 alpha_G4DNAIonisation: 43
154 alpha_G4DNAChargeDecrease: 44
155 msc: 410
156 CoulombScat: 420
157 ionIoni: 430
158 nuclearStopping: 440
159
160 alpha+_G4DNAElastic: 51
161 alpha+_G4DNAExcitation: 52
162 alpha+_G4DNAIonisation: 53
163 alpha+_G4DNAChargeDecrease: 54
164 alpha+_G4DNAChargeIncrease: 55
165 msc: 510
166 CoulombScat: 520
167 hIoni: 530
168 nuclearStopping: 540
169
170 helium_G4DNAElastic: 61
171 helium_G4DNAExcitation: 62
172 helium_G4DNAIonisation: 63
173 helium_G4DNAChargeIncrease: 65
174
175 GenericIon_G4DNAIonisation: 73
176 msc: 710
177 CoulombSca: 720
178 ionIoni: 730
179 nuclearStopping: 740
180
181 phot: 81
182 compt: 82
183 conv: 83
184 Rayl: 84
185
186 ----------------------------------------------
187
188 Should you have any enquiry, please do not hes
189 incerti@lp2ib.in2p3.fr or tran@lp2ib.in2p3.fr