Gabriele Cosmo
94 lines
3.1 KiB
Plaintext
94 lines
3.1 KiB
Plaintext
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Geant4 - range example
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README file
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----------------------
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CORRESPONDING AUTHOR
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S. Incerti et al. (a, *)
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a. Centre d'Etudes Nucleaires de Bordeaux-Gradignan
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(CENBG), IN2P3 / CNRS / Bordeaux University, 33175 Gradignan, France
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* e-mail:incerti@cenbg.in2p3.fr
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---->0. INTRODUCTION.
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The range example shows how to calculate range of electrons
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in liquid water using the Geant4-DNA physics processes and models.
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It is adapted from svalue.
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This example is provided by the Geant4-DNA collaboration.
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These processes and models are further described at:
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http://geant4-dna.org
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Any report or published results obtained using the Geant4-DNA software shall
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cite the following Geant4-DNA collaboration publications:
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Phys. Med. 31 (2015) 861-874
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Med. Phys. 37 (2010) 4692-4708
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---->1. GEOMETRY SET-UP.
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The geometry is a 1 m radius sphere of liquid water (G4_WATER
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material). Particles are shot randomly from the sphere centre.
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Radius of the sphere, physics constructor and energy can be
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controlled by the range.in macro file.
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The PrimaryGeneratorAction class is adapted (G4 state dependent)
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in order to enable generic physics list usage
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(empty modular physics list).
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---->2. SET-UP
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Make sure G4LEDATA points to the low energy electromagnetic data files.
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The code can be compiled with cmake.
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It works in MT mode.
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---->3. HOW TO RUN THE EXAMPLE
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In interactive mode, run:
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./range range.in
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The range.in macro allows a full control of the simulation.
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The histo.in macro is also provided for the creation of histograms.
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The computation of ranges is performed in the
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TrackingAction::PostUserTrackingAction method. The computation
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for electrons uses the primary particle track length and the computation
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for incident particles undergoing Geant4-DNA charge exchange processes, such
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as protons, hydrogen, alpha particles and their charge states, is specific.
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---->4. PHYSICS
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You can select Geant4-DNA physics constructor in range.in.
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A tracking cut can be applied if requested.
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---->5. SIMULATION OUTPUT AND RESULT ANALYSIS
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The output results consist in a text file (range.txt), containing :
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- energy of incident particles (in eV)
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- track length of primary particle (in nm)
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- rms of track length of primary particle (in nm)
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- projected length of primary particle (in nm)
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- rms of projected length of primary particle (in nm)
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- penetration of primary particle (in nm)
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- rms of penetration of primary particle (in nm)
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Note: rms values correspond to standard deviation.
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Results in this file can be displayed using the ROOT macro plot.C:
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root plot.C
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---------------------------------------------------------------------------
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Should you have any enquiry, please do not hesitate to contact:
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incerti@cenbg.in2p3.fr
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