S. Incerti

Centre d'Etudes Nucléaires de Bordeaux-Gradignan CNRS/IN2P3 Université Bordeaux 1 chemin du Solarium 33175 Gradignan France


The dnaphysics example is a simple application that simulates the track of a 1 keV electrons particle in liquid water using very low energy electromagnetic Geant4 DNA processes. These processes are defined (for now) in liquid water only. See details about the Geant4-DNA project at: this link

Simulated experimental setup

The electron beam is at the centre of a liquid water box, made of G4_WATER material.


The PhysicsList.cc file explains easily how to use the G4EmDNAPhysics physics builder.

How to install and run the example

Please, look at the README file provided with the example.

Simulation results

The output results consists in a ROOT file (http://root.cern.ch), containing an ntuple with:
  • the type of particle at each simulation step
  • the type of process at each step
  • the track position at each step (in nanometers)
  • the energy deposit at each step (in eV)

This file can be easily analyzed using the provided ROOT macro file plot.C. The macro gives the following graphical output:

The naming scheme of particles and processes used is described in SteppingAction.cc.

Suggested papers

Refer to all Geant4-DNA publications :


Should you have any enquiry, please do not hesitate to contact the author

-- LucianoPandola - 21 Oct 2014

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Topic revision: r1 - 2014-10-21 - LucianoPandola
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