Training Course on Electron-Photon Transport Modelling with PENELOPE-2018
Scope and Objectives

This course was addressed to researchers in Radiation Physics and its applications. The main objective was to provide the participants with a detailed description of PENELOPE, with an ample perspective on Monte Carlo methods for simulation of electron/photon transport. The course consisted of theoretical lectures and hands-on sessions using the graphical-user interface PenGUIn. Basic aspects of Monte Carlo sampling methods and scoring, physical interaction models, and transport schemes for charged particles will be introduced in the theoretical lectures. Benchmark comparisons with experiments were also presented to illustrate the capabilities and reliability of the code. Hands-on sessions dealt with:
1) the installation of required software (Fortran compiler, gnuplot, and file manager) and the simulation programs and tools in Windows and Linux,
2) the structure and operation of the graphical user interface PenGUIn (Windows),
3) the definition of quadric geometries and the operation of the 2D and 3D geometry viewers,
4) the use of the generic main program PENMAIN (quadric geometries) for the set of examples provided in the distribution package,
5) the design of the main steering program for specific applications.

As in previous editions, the duration of the course was four and a half days. To allow close practical tuition, the number of participants was limited to a maximum of 14.         

SYLLABUS (T, theory; P, practical):

T1. Monte Carlo simulation. Basic concepts

   T1.1. Random sampling methods

   T1.2. Monte Carlo integration. Statistical uncertainties

   T1.3. Simulation of radiation transport. Scoring


T2. Physics of photon interactions

   T2.1. Rayleigh scattering

   T2.2. Photoelectric effect

   T2.3. Compton scattering

   T2.4. Pair production

   T2.5. Scattering of polarised photons


T3. Physics of electron/positron interactions  

   T3.1. Elastic scattering

   T3.2. Inelastic scattering

   T3.3. Bremsstrahlung emission

   T3.4. Positron annihilation


T4. Electron/positron transport mechanics

   T4.1. Multiple elastic scattering

   T4.2. Energy-loss straggling

   T4.3. Condensed and mixed simulation schemes

   T4.4. Random-hinge method

   T4.5. Simulation parameters: accuracy vs. simulation speed

   T4.6. Transport in electromagnetic fields


T5. Geometry

   T5.1. Quadric surfaces

   T5.2. Constructive quadric geometry

   T5.3. The PENGEOM geometry package

   T5.4. Geometry editor/viewer/debugger PenGeomJar


P1. The PENELOPE code system

   P1.1. Structure of the simulation package

   P1.2. Software installation

   P1.3. Structure and operation of PenGUIn

   P1.4. Visualization of macroscopic parameters (TABLES)

   P1.5. Visualization of electron-photon showers (SHOWER)


P3. Practical simulations with PENMAIN/PenGUIn

   P3.1. Quadric geometries: definition and visualization

   P3.2. Structure of the input file: source definition, simulation parameters

   P3.3. Scoring: impact detectors, energy-deposition detectors, outer angular detectors

   P3.4. Spatial dose distributions

   P3.4. Radiometric quantities: distribution of fluence with respect to energy

   P3.5. Practical variance reduction: interaction forcing

   P3.6. Designing the main program for your application


The best options for accommodation near the Faculty of Physics are


  • Thehall of residence of the Universitat de Barcelona

    Collegi Major Penyafort-Montserrat



  • Thehall of residence of the Universitat Politècnica de Catalunya

    University Residence Hall Torre Girona



Prices are in the range 45-60 euros/night (single room). These two halls of residence are in walking distances of the Faculty of Physics. RESA has another residence at Diagonal Mar Campus, across the city; the trip by metro takes about 50 minutes. Reservation of accommodation must be arranged by the participants; availability of rooms at the university residences cannot be guaranteed.


Further information on accommodation can be found at

3 - 7 February 2020
Universitat de Barcelona, Facultat de Fisica, Diagonal 645 08028 Barcelona Spain