Version:
[ ReleaseNotes ] [ 1.0 ] [ 1.1 ] [ 2.0 ] [ 3.0 ] [ 3.1 ] [ 3.2 ] [ 4.0 ] [ 4.0.p1 ] [ 4.0.p2 ] [ 4.1 ] [ 4.1.p1 ] [ 5.0 ] [ 5.0.p1 ] [ 5.1 ] [ 5.1.p1 ] [ 5.2 ] [ 5.2.p1 ] [ 5.2.p2 ] [ 6.0 ] [ 6.0.p1 ] [ 6.1 ] [ 6.2 ] [ 6.2.p1 ] [ 6.2.p2 ] [ 7.0 ] [ 7.0.p1 ] [ 7.1 ] [ 7.1.p1 ] [ 8.0 ] [ 8.0.p1 ] [ 8.1 ] [ 8.1.p1 ] [ 8.1.p2 ] [ 8.2 ] [ 8.2.p1 ] [ 8.3 ] [ 8.3.p1 ] [ 8.3.p2 ] [ 9.0 ] [ 9.0.p1 ] [ 9.0.p2 ] [ 9.1 ] [ 9.1.p1 ] [ 9.1.p2 ] [ 9.1.p3 ] [ 9.2 ] [ 9.2.p1 ] [ 9.2.p2 ] [ 9.2.p3 ] [ 9.2.p4 ] [ 9.3 ] [ 9.3.p1 ] [ 9.3.p2 ] [ 9.4 ] [ 9.4.p1 ] [ 9.4.p2 ] [ 9.4.p3 ] [ 9.4.p4 ] [ 9.5 ] [ 9.5.p1 ] [ 9.5.p2 ] [ 9.6 ] [ 9.6.p1 ] [ 9.6.p2 ] [ 9.6.p3 ] [ 9.6.p4 ] [ 10.0 ] [ 10.0.p1 ] [ 10.0.p2 ] [ 10.0.p3 ] [ 10.0.p4 ] [ 10.1 ] [ 10.1.p1 ] [ 10.1.p2 ] [ 10.1.p3 ] [ 10.2 ] [ 10.2.p1 ] [ 10.2.p2 ] [ 10.2.p3 ] [ 10.3 ] [ 10.3.p1 ] [ 10.3.p2 ] [ 10.3.p3 ] [ 10.4 ] [ 10.4.p1 ] [ 10.4.p2 ] [ 10.4.p3 ] [ 10.5 ] [ 10.5.p1 ] [ 10.6 ] [ 10.6.p1 ] [ 10.6.p2 ] [ 10.6.p3 ] [ 10.7 ] [ 10.7.p1 ] [ 10.7.p2 ] [ 10.7.p3 ] [ 10.7.p4 ] [ 11.0 ] [ 11.0.p1 ] [ 11.0.p2 ] [ 11.0.p3, ] [ 11.0.p4 ] [ 11.1 ] [ 11.1.1 ] [ 11.1.2 ] [ 11.1.3 ] [ 11.2 ] [ 11.2.1 ] [ 11.2.2 ] [ 11.3.0 ]
1 -------------------------------------------------------------------
2 -------------------------------------------------------------------
3
4 =========================================================
5 Geant4 - Microbeam example
6 =========================================================
7
8 README file
9 ----------------------
10
11 CORRESPONDING AUTHOR
12
13 S. Incerti (a, *) et al.
14 a. Centre d'Etudes Nucleaires de Bordeaux-Gradignan
15 (CENBG), IN2P3 / CNRS / Bordeaux 1 University, 33175 Gradignan, France
16 * e-mail:incerti@cenbg.in2p3.fr
17
18 ---->0. INTRODUCTION.
19
20 The microbeam example simulates the cellular irradiation beam line
21 installed on the AIFIRA electrostatic accelerator facility located at
22 CENBG, Bordeaux-Gradignan, France. For more information on this facility,
23 please visit :
24 http://www.cenbg.in2p3.fr/
25
26 ---->1. GEOMETRY SET-UP.
27
28 The elements simulated are:
29
30 1. A switching dipole magnet with fringing field, to deflect the 3 MeV alpha
31 beam generated by the electrostatic accelerator into the microbeam line,
32 oriented at 10 degrees from the main beam direction;
33
34 2. A circular collimator object, defining the incident beam size at the
35 microbeam line entrance;
36
37 3. A quadrupole based magnetic symmetric focusing system allowing equal
38 transverse demagnifications of 10. Fringe fields are calculated from Enge's
39 model.
40
41 4. A dedicated cellular irradiation chamber setup;
42
43 5. A set of horizontal and vertical electrostatic deflecting plates which can
44 be turned on or off to deflect the beam on target;
45
46 6. A realistic human keratinocyte voxellized cell observed from confocal
47 microscopy and taking into account realistic nucleus and cytoplasm chemical
48 compositions.
49
50
51 ---->2. EXPERIMENTAL SET-UP.
52
53 The beam is defined at the microbeam line entrance through a collimator
54 5 micrometer in diameter. The beam is then focused onto target using a
55 quadruplet of quadrupoles in the so-called Dymnikov magnetic configuration.
56 The beam is sent to the irradiation chamber where it travels through a
57 isobutane gas detector for counting purpose before reaching the polypropylene
58 culture foil of the target cell which is immersed in the growing medium and
59 enclosed within a dish.
60
61 A cell is placed on the polypropylene foil and is irradiated using the
62 microbeam. The cell is represented through a 3D phantom (G4PVParameterization)
63 obtained from confocal microscopy. In the provided example, the voxels sizes
64 are : 359 nm (X) x 359 nm (Y) x 163 nm (Z)
65
66 The primary particle beam parameters are generated from experimental
67 measurements performed on the AIFIRA facility. Incident particle used for
68 cellular irradiation are 3 MeV alpha particles.
69
70 More details on the experimental setup and its simulation with Geant4 can
71 be found in the following papers:
72
73 - IN SILICO NANODOSIMETRY: NEW INSIGHTS INTO NON-TARGETED BIOLOGICAL RESPONSES TO
74 RADIATION
75 By Z. Kuncic, H. L. Byrne, A. L. McNamara, S. Guatelli, W. Domanova, S. Incerti
76 Publsihed in Comp. Math. Meth. Med. (2012) 147252
77
78 - MONTE CARLO MICRODOSIMETRY FOR TARGETED IRRADIATION OF INDIVIDUAL CELLS USING
79 A MICROBEAM FACILITY
80 By S. Incerti, H. Seznec, M. Simon, Ph. Barberet, C. Habchi, Ph. Moretto
81 Published in Rad. Prot. Dos. 133, 1 (2009) 2-11
82
83 - MONTE CARLO SIMULATION OF THE CENBG MICROBEAM AND NANOBEAM LINES WITH THE
84 GEANT4 TOOLKIT
85 By S. Incerti, Q. Zhang, F. Andersson, Ph. Moretto, G.W. Grime,
86 M.J. Merchant, D.T. Nguyen, C. Habchi, T. Pouthier and H. Seznec
87 Published in Nucl. Instrum. and Meth. B 260 (2007) 20-27
88
89 - A COMPARISON OF CELLULAR IRRADIATION TECHNIQUES WITH ALPHA PARTICLES USING
90 THE GEANT4 MONTE CARLO SIMULATION TOOLKIT
91 By S. Incerti, N. Gault, C. Habchi, J.L.. Lefaix, Ph. Moretto, J.L.. Poncy,
92 T. Pouthier, H. Seznec. Dec 2006. 3pp.
93 Published in Rad. Prot. Dos. 122, 1-4, (2006) 327-329
94
95 - GEANT4 SIMULATION OF THE NEW CENBG MICRO AND NANO PROBES FACILITY
96 By S. Incerti, C. Habchi, Ph. Moretto, J. Olivier and H. Seznec. May 2006. 5pp.
97 Published in Nucl.Instrum.Meth.B249:738-742, 2006
98
99 - A COMPARISON OF RAY-TRACING SOFTWARE FOR THE DESIGN OF QUADRUPOLE MICROBEAM
100 SYSTEMS
101 By S. Incerti et al.,
102 Published in Nucl.Instrum.Meth.B231:76-85, 2005
103
104 - DEVELOPMENT OF A FOCUSED CHARGED PARTICLE MICROBEAM FOR THE IRRADIATION OF
105 INDIVIDUAL CELLS.
106 By Ph. Barberet, A. Balana, S. Incerti, C. Michelet-Habchi, Ph. Moretto,
107 Th. Pouthier. Dec 2004. 6pp.
108 Published in Rev.Sci.Instrum.76:015101, 2005
109
110 - SIMULATION OF CELLULAR IRRADIATION WITH THE CENBG MICROBEAM LINE USING
111 GEANT4.
112 By S. Incerti, Ph. Barberet, R. Villeneuve, P. Aguer, E. Gontier,
113 C. Michelet-Habchi, Ph. Moretto, D.T. Nguyen, T. Pouthier, R.W. Smith. Oct 2003. 6pp.
114 Published in IEEE Trans.Nucl.Sci.51:1395-1401, 2004
115
116 - SIMULATION OF ION PROPAGATION IN THE MICROBEAM LINE OF CENBG USING
117 GEANT4.
118 By S. Incerti, Ph. Barberet, B. Courtois, C. Michelet-Habchi,
119 Ph. Moretto. Sep 2003.
120 Published in Nucl.Instrum.Meth.B210:92-97, 2003
121
122
123 ---->3 VISUALIZATION
124
125 The user can visualize the targeted cell thanks to the Qt interface.
126
127 ---->4. HOW TO RUN THE EXAMPLE
128
129 The code should be compiled with cmake.
130
131 Run the example from your build directory with:
132 ./microbeam microbeam.mac
133
134 or in interactive mode:
135 ./microbeam
136
137 The example works in MT mode.
138
139 ---->5. PHYSICS
140
141 Livermore physics list is used by default.
142
143 ---->6. SIMULATION OUTPUT AND RESULT ANALYZIS
144
145 The output results consist in a microbeam.root file per thread,
146 containing several ntuples:
147
148 * total deposited dose in the cell nucleus and in the cell
149 cytoplasm by each incident alpha particle;
150
151 * average on the whole run of the dose deposited per
152 Voxel per incident alpha particle;
153
154 * final stopping (x,y,z) position of the incident
155 alpha particle within the irradiated medium (cell or culture medium);
156
157 * stopping power dE/dx of the incident
158 alpha particle just before penetrating into the targeted cell;
159
160 * beam transverse position distribution (X and Y)
161 just before penetrating into the targeted cell;
162
163 These results can be easily analyzed using for example the provided ROOT macro
164 file plot.C; to do so :
165 * be sure to have ROOT installed on your machine
166 * be sure to be in the directory where the output ROOT files have been created
167 * do: root plot.C
168 * or under your ROOT session, type in : .X plot.C to execute the macro file
169
170 ---------------------------------------------------------------------------
171
172 Should you have any enquiry, please do not hesitate to contact:
173 incerti@cenbg.in2p3.fr
