Electron-Photon Transport Modelling with PENELOPE-2014
Physics, Code Structure and Operation

3-7 July 2017

University of Barcelona
Facultat de Fisica
Diagonal 645
08028 Barcelona

Scope and Objectives

This course is addressed to researchers in Radiation Physics and its applications. The main objective is to provide the participants with a detailed description of the 2014 version of PENELOPE, with an ample perspective on Monte Carlo methods for simulation of electron/photon transport. The course will consist of theoretical lectures and hands-on sessions. 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 will also be presented to illustrate the capabilities and reliability of the code. Hands-on sessions will deal with ●1) the installation of required software (Fortran compiler, gnuplot, and file manager) and the simulation programs and tools, ●2) the use of the generic main programs PENCYL (cylindrical geometries) and PENMAIN (quadric geometries) for the set of examples provided in the distribution package, ●3) the definition of quadric geometries with the visual editor/viewer/debugger PenGeomJar, and ●4) the design of the main steering program for specific applications.

Following suggestions from participants in previous editions, the duration of the workshop has been extended to five full days. Additionally, to allow closer practical tuition, the number of participants is limited to a maximum of 12.

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. The 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. Generation of material data files (MATERIAL)
    P1.4. Visualization of macroscopic parameters (TABLES)
    P1.5. Visualization of electron-photon showers (SHOWER)
    P1.6. Radiometric quantities: linear energy deposition

P2. Practical simulations with PENCYL

    P2.1. Planar and cylindrical geometries (PENCYL)
    P2.2. Simulation parameters. Stability
    P2.3. Scoring: energy and angular distributions of emerging particles
    P2.4. Scoring: absorbed dose and deposited charge distributions
    P2.5. Scoring: energy deposition detector
    P2.6. Variance reduction: interaction forcing, bremsstrahlung and x-ray splitting, Woodcock’s delta scattering

P3. Practical simulations with PENMAIN

    P3.1. Quadric geometries: definition and visualization
    P3.2. Structure of the input file: source definition, simulation parameters
    P3.3. Scoring: impact detectors
    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

Teachers of the Training Course / Tutorial

Francesc Salvat, José M. Fernández-Varea and Francesc Salvat-Pujol
Facultat de Fisica (ECM)
Universitat de Barcelona
Diagonal 645
08028 Barcelona, Spain

Last updated  12 January 2017