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0001 =========================================================
0002 Geant4 - slowing example
0003 =========================================================
0004
0005 README file
0006 ----------------------
0007
0008 CORRESPONDING AUTHOR
0009
0010 S. Incerti (a, *)
0011 a. LP2i, IN2P3 / CNRS / Bordeaux University, 33175 Gradignan, France
0012 * e-mail: incerti@lp2ib.in2p3.fr
0013
0014 ---->0. INTRODUCTION.
0015
0016 The slowing example shows how to simulate slowing down spectra for electrons
0017 in liquid water using the Geant4-DNA physics processes and models.
0018
0019 This example is provided by the Geant4-DNA collaboration.
0020
0021 It is described in Nucl. Instrum. and Meth. B 397 (2017) 45-50.
0022
0023 The Geant4-DNA processes and models are further described at:
0024 http://geant4-dna.org
0025
0026 Any report or published results obtained using the Geant4-DNA software shall
0027 cite the following Geant4-DNA collaboration publications:
0028 Med. Phys. 45, (2018) e722-e739
0029 Phys. Med. 31 (2015) 861-874
0030 Med. Phys. 37 (2010) 4692-4708
0031 Int. J. Model. Simul. Sci. Comput. 1 (2010) 157–178
0032
0033 ---->1. GEOMETRY SET-UP.
0034
0035 The geometry is a cube (World) made of liquid water (G4_WATER
0036 material). Electrons are shot from the center of the volume.
0037
0038 ---->2. SET-UP
0039
0040 Make sure $G4LEDATA points to the low energy electromagnetic data files.
0041
0042 The code can be compiled with cmake.
0043
0044 It works in MT mode.
0045
0046 ---->3. HOW TO RUN THE EXAMPLE
0047
0048 In batch mode, run:
0049
0050 ./slowing slowing.in
0051
0052 The macro slowing.in shows how to use/define:
0053 - number of threads
0054 - Geant4-DNA physics constructors
0055 - tracking cut
0056 - atomic deexcitation
0057 - histograms
0058
0059 ---->4. PHYSICS
0060
0061 All Geant4-DNA physics constructors can be used.
0062
0063 ---->5. SIMULATION OUTPUT AND RESULT ANALYSIS
0064
0065 The output results consist in a slowing.root file containing 3 histograms
0066 of slowing down spectrum Phi/D (unit is /cm2/eV/Gy) as a function of energy
0067 (log (E/eV)) for:
0068 - all electrons (histogram number 1)
0069 - primary electrons (histogram number 2)
0070 - secondary electrons (histogram number 3)
0071
0072 This file can be easily analyzed using the provided ROOT macro
0073 file plot.C (root plot.C).
