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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. 51 (2024) 5873–5889
0029 Med. Phys. 45 (2018) e722-e739
0030 Phys. Med. 31 (2015) 861-874
0031 Med. Phys. 37 (2010) 4692-4708
0032 Int. J. Model. Simul. Sci. Comput. 1 (2010) 157–178
0033
0034 ---->1. GEOMETRY SET-UP.
0035
0036 The geometry is a cube (World) made of liquid water (G4_WATER
0037 material). Electrons are shot from the center of the volume.
0038
0039 ---->2. SET-UP
0040
0041 Make sure $G4LEDATA points to the low energy electromagnetic data files.
0042
0043 The code can be compiled with cmake.
0044
0045 It works in MT mode.
0046
0047 ---->3. HOW TO RUN THE EXAMPLE
0048
0049 In batch mode, run:
0050
0051 ./slowing slowing.in
0052
0053 The macro slowing.in shows how to use/define:
0054 - number of threads
0055 - Geant4-DNA physics constructors
0056 - tracking cut
0057 - atomic deexcitation
0058 - histograms
0059
0060 ---->4. PHYSICS
0061
0062 All Geant4-DNA physics constructors can be used.
0063
0064 ---->5. SIMULATION OUTPUT AND RESULT ANALYSIS
0065
0066 The output results consist in a slowing.root file containing 3 histograms
0067 of slowing down spectrum Phi/D (unit is /cm2/eV/Gy) as a function of energy
0068 (log (E/eV)) for:
0069 - all electrons (histogram number 1)
0070 - primary electrons (histogram number 2)
0071 - secondary electrons (histogram number 3)
0072
0073 This file can be easily analyzed using the provided ROOT macro
0074 file plot.C (root plot.C).
