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1 -------------------------------------------------------------------
2 -------------------------------------------------------------------
3
4 =========================================================
5 Geant4 - AuNP example
6 =========================================================
7
8 README file
9 ----------------------
10
11 CORRESPONDING AUTHOR
12
13 Should you have any enquiry, please do not hesitate to contact:
14 D. Sakata
15 National Institute of Radiological Science
16 * e-mail:sakata.dousatsu@qst.go.jp, dosatsu.sakata@cern.ch
17
18 ---->0. INTRODUCTION.
19
20 The AuNP example simulates the track-structure of electrons in microscopic gold volume.
21 The example also simulates that in liquid water medium surrunding the gold volume.
22
23 This example is provided by the Geant4-DNA collaboration.
24
25 These processes and models are further described at:
26 http://geant4-dna.org
27
28 Any report or published results obtained using the Geant4-DNA software shall
29 cite the following Geant4-DNA collaboration publications:
30 Phys. Med. 31 (2015) 861-874
31 Med. Phys. 37 (2010) 4692-4708
32
33 We also suggest these other references related to this example:
34 Phys. Med. 63 (2019), 98-104
35 Med. Phys. 45 (2018), 2230-2242
36 J. App. Phys. 120 (2016), 244901
37
38 The AuNP example simulates the track-structure of electrons
39 in microscopic gold volume.The example also simulates that
40 in liquid water medium surrunding the gold volume.
41
42 The details of the physics models are described in the following paper:
43 J. Appl. Phys. 120 (2016) 244901
44
45 The details of the application are described in the following paper:
46 Phys. Med. 63 (2019) 98-104
47 Med. Phys. 45(5) (2018) 2230-2242
48
49 ---->1. GEOMETRY SET-UP.
50
51 The geometry is a sphere (World) made of liquid water containing a smaller
52 sphererical target volume of Gold.
53
54 The default geometry is constructed in DetectorConstruction class.
55
56 --->2. PHYSICS LIST
57
58 The default physics list is constructed in PhysicsList class.
59
60 --->3. DETECTOR RESPONSE : Scorers
61
62 This scorer computes following quantities.
63
64 - the energy spectra of secondary particles generated in AuNP
65 - the energy spectra of secondary particles at AuNP surface
66 - the energy spectra of secondary particles generated in liquid water
67 - the energy deposit and the position in the absorber surrunding AuNP
68
69 Run::RecordEvent(), called at end of event, collects informations
70 event per event from the hits collections, and accumulates statistic for
71 RunAction::EndOfRunAction().
72
73 In multi-threading mode the statistics accumulated per workers is merged
74 to the master in Run::Merge().
75
76 The information is scored in a ROOT ntuple file AuNP.root.
77
78 ---->4. HOW TO RUN THE EXAMPLE
79
80 This example shows:
81 - how to use the Geant4-DNA processes for gold
82 - how to count and save occurrences of processes
83
84 The code can be compiled with cmake.
85 It works in MT mode.
86
87 Two user macro files can be used:
88 ./AuNP AuNP.mac
89
90 ---->5. SIMULATION OUTPUT AND RESULT ANALYSIS
91
92 The output results consists in an AuNP.root file, containing for the run:
93 - the energy spectra of secondary particles generated in AuNP
94 - the energy spectra of secondary particles at AuNP surface
95 - the energy spectra of secondary particles generated in liquid water
96 - the energy deposit and the position in the absorber surrunding AuNP
97
98 This file can be easily analyzed using for example the provided ROOT macro
99 file plot.C; to do so :
100 * be sure to have ROOT installed on your machine
101 * be sure to be in the microdosimetry directory
102 * launch ROOT by typing root
103 * under your ROOT session, type in : .X plot.C to execute the macro file
104 * alternatively you can type directly under your session : root plot.C
105
