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0001 =========================================================
0002 Geant4 - range example
0003 =========================================================
0004
0005 README file
0006 ----------------------
0007
0008 CORRESPONDING AUTHOR
0009
0010 S. Incerti et al. (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 range example shows how to calculate range of electrons
0017 in liquid water using the Geant4-DNA physics processes and models.
0018
0019 It is adapted from svalue.
0020
0021 This example is provided by the Geant4-DNA collaboration.
0022
0023 These 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 1 m radius sphere of liquid water (G4_WATER
0036 material). Particles are shot randomly from the sphere centre.
0037
0038 Radius of the sphere, physics constructor and energy can be
0039 controlled by the range.in macro file.
0040
0041 ---->2. SET-UP
0042
0043 Make sure G4LEDATA points to the low energy electromagnetic data files.
0044
0045 The code can be compiled with cmake.
0046
0047 It works in MT mode.
0048
0049 ---->3. HOW TO RUN THE EXAMPLE
0050
0051 In interactive mode, run:
0052
0053 ./range range.in
0054
0055 The range.in macro allows a full control of the simulation.
0056
0057 The histo.in macro is also provided for the creation of histograms.
0058
0059 The computation of ranges is performed in the
0060 TrackingAction::PostUserTrackingAction method. The computation
0061 for electrons uses the primary particle track length and the computation
0062 for incident particles undergoing Geant4-DNA charge exchange processes, such
0063 as protons, hydrogen, alpha particles and their charge states, is specific.
0064
0065 ---->4. PHYSICS
0066
0067 You can select Geant4-DNA physics constructor in range.in.
0068
0069 A tracking cut can be applied if requested.
0070
0071 ---->5. SIMULATION OUTPUT AND RESULT ANALYSIS
0072
0073 The output results consist in a text file (range.txt), containing :
0074 - energy of incident particles (in eV)
0075 - track length of primary particle (in nm)
0076 - rms of track length of primary particle (in nm)
0077 - projected length of primary particle (in nm)
0078 - rms of projected length of primary particle (in nm)
0079 - penetration of primary particle (in nm)
0080 - rms of penetration of primary particle (in nm)
0081
0082 Note: rms values correspond to standard deviation.
0083
0084 Results in this file can be displayed using the ROOT macro plot.C:
0085 root plot.C
