Name: Geant4 Advanced Course 2023 @ CERN
Start: 2023-10-16T14:00:00+02:00
End: 2023-10-20T18:40:00+02:00
Location: CERN

Geant4 Advanced Course 2023 @ CERN

from Monday 16 October 2023 (14:00) to Friday 20 October 2023 (18:40)

Monday 16 October 2023
14:00 Welcome and Practicalities - John Apostolakis (CERN)
Welcome and Practicalities
- John Apostolakis (CERN)
14:00 - 14:10
Room: 593/R-010 - Salle 11 - Welcome to the course - Practical aspects - Zoom, Mattermost, Questions, ...
14:10 Overview - John Apostolakis (CERN)
Overview
- John Apostolakis (CERN)
14:10 - 14:25
Room: 593/R-010 - Salle 11 - An overview of the topics covered in the course - and how they fit
14:25 Physics: particles and processes - Vladimir Ivantchenko (CERN)
Physics: particles and processes
- Vladimir Ivantchenko (CERN)
14:25 - 15:20
Room: 593/R-010 - Salle 11 - Particles - Ions - Processes - What happens at a step - Order of initialisation and execution - Cuts - How to prepare custom particle and process
15:20 Break
Break
15:20 - 15:45
15:45 Electromagnetic physics - Vladimir Ivantchenko (CERN)
Electromagnetic physics
- Vladimir Ivantchenko (CERN)
15:45 - 16:50
Room: 593/R-010 - Salle 11 - Energy loss - Cuts per region - Models per region - Atomic de-excitation - Multiple and single scattering - Documentation for electromagnetic physics
16:50 Hadronic Physics - I - Alberto Ribon (CERN)
Hadronic Physics - I
- Alberto Ribon (CERN)
16:50 - 17:40
Room: 593/R-010 - Salle 11 Introduction (what is it, why we need it, what are the challenges) Overview of the hadronic physics framework Hadronic cross-sections Hadronic final-state models Hadronic data libraries
17:40 Discussion - Alberto Ribon (CERN) Vladimir Ivantchenko (CERN) John Apostolakis (CERN)
Discussion
- Alberto Ribon (CERN)
- Vladimir Ivantchenko (CERN)
- John Apostolakis (CERN)
17:40 - 18:00
Room: 593/R-010 - Salle 11 - EM physics - Hadronic physics
Tuesday 17 October 2023
14:00 Geometry - Gabriele Cosmo (CERN)
Geometry
- Gabriele Cosmo (CERN)
14:00 - 15:15
Room: 593/R-010 - Salle 11 - Placements, Replicated and Parameterised volumes, introduction - Divided volumes - Geometrical regions - Touchables and Nested parameterisations - Assembly volumes - Reflected volumes - Geometry optimization - Parallel geometries - Moving geometries - CAD interface
15:15 Discussion - Gabriele Cosmo (CERN) John Apostolakis (CERN)
Discussion
- Gabriele Cosmo (CERN)
- John Apostolakis (CERN)
15:15 - 15:35
Room: 593/R-010 - Salle 11 Geometry
15:35 Break
Break
15:35 - 16:00
Room: 593/R-010 - Salle 11
16:00 Magnetic Field - John Apostolakis (CERN)
Magnetic Field
- John Apostolakis (CERN)
16:00 - 17:15
Room: 593/R-010 - Salle 11 - Magnetic field - Field integration and other types of field - Steppers & Interpolation
17:15 Discussion - John Apostolakis (CERN)
Discussion
- John Apostolakis (CERN)
17:15 - 17:35
Room: 593/R-010 - Salle 11 Magnetic Field
17:35 Homework of Day 1
Homework of Day 1
17:35 - 17:55
Room: 593/R-010 - Salle 11 Questions from exercises provided on Day 1
Wednesday 18 October 2023
14:00 Multithreading - John Apostolakis (CERN)
Multithreading
- John Apostolakis (CERN)
14:00 - 14:50
Room: 593/R-010 - Salle 11 - Why use multi-threading in Geant4 - What data is shared between threads - User commands to control threading and regular and error output - User code / actions in multi-threaded (MT) mode
14:50 Scoring - Makoto Asai
Scoring
- Makoto Asai
14:50 - 15:30
Room: 593/R-010 - Salle 11 - Introduction to Scoring - Command-based scoring - Sensitive detector vs. primitive scorer - Basic structure of detector sensitivity - Sensitive detectors and hits
15:30 Break
Break
15:30 - 16:00
Room: 593/R-010 - Salle 11
16:00 Additional User classes - Makoto Asai
Additional User classes
- Makoto Asai
16:00 - 16:30
Room: 593/R-010 - Salle 11 - User limits - User information classes - Stack management
16:30 Definition of UI commands - Makoto Asai
Definition of UI commands
- Makoto Asai
16:30 - 16:50
Room: 593/R-010 - Salle 11 - G4UIExecutive - Definition of custom UI commands
16:50 Discussion on UI, user actions and scoring - Makoto Asai
Discussion on UI, user actions and scoring
- Makoto Asai
16:50 - 17:15
Room: 593/R-010 - Salle 11 - UI commands - User actions - Scoring
17:15 Questions & Answers
Questions & Answers
17:15 - 18:00
Room: 593/R-010 - Salle 11 General discussion on topics raised on Mattermost
Thursday 19 October 2023
14:00 Fast Simulation - Alberto Ribon (CERN) Anna Zaborowska (CERN)
Fast Simulation
- Alberto Ribon (CERN)
- Anna Zaborowska (CERN)
14:00 - 14:50
Room: 593/R-010 - Salle 11 - Fast parameterised simulation - G4VFastSimulationModel - G4FastSimulationManagerProcess - Use of "Ghost" volumes - Techniques of fast simulation
14:50 Discussion
Discussion
14:50 - 15:05
Room: 593/R-010 - Salle 11 Fast Simulation

15:05 Break
Break
15:05 - 15:30
15:30 Electromagnetic physics II - Optical Photons - Alexander Howard (Imperial College (GB))
Electromagnetic physics II - Optical Photons
- Alexander Howard (Imperial College (GB))
15:30 - 16:30
Room: 593/R-010 - Salle 11 Optical photons - generation, propagation and their physics processes
16:30 Physics Lists - Gunter Folger
Physics Lists
- Gunter Folger
16:30 - 17:40
Room: 593/R-010 - Salle 11 - Introduction to Physics Lists - The Geant4 Physics List interface - Using pre-packaged physics lists - How to choose a physics list - Examples
17:40 Discussion - Gunter Folger Alberto Ribon (CERN)
Discussion
- Gunter Folger
- Alberto Ribon (CERN)
17:40 - 18:00
Room: 593/R-010 - Salle 11 - Physics lists - Hadronic physics
Friday 20 October 2023
14:00 Event Biasing - Marc Verderi (Centre National de la Recherche Scientifique (FR))
Event Biasing
- Marc Verderi (Centre National de la Recherche Scientifique (FR))
14:00 - 15:00
Room: 593/R-010 - Salle 11 * Introduction * Early Provided Biasing Options 1. Primary Particle Biasing 2. Options In Hadronic 3. Geometry-based importance biasing 4. Weight Window Technique 5. User defined biasing * Reverse Monte-Carlo * Generic Biasing Scheme
15:00 Discussion - Alberto Ribon (CERN) Marc Verderi (Centre National de la Recherche Scientifique (FR))
Discussion
- Alberto Ribon (CERN)
- Marc Verderi (Centre National de la Recherche Scientifique (FR))
15:00 - 15:20
Room: 593/R-010 - Salle 11 - Event biasing - Physics biasing
15:20 Break
Break
15:20 - 15:40
Room: 593/R-010 - Salle 11
15:40 Physics Biasing - Alberto Ribon (CERN)
Physics Biasing
- Alberto Ribon (CERN)
15:40 - 16:20
Room: 593/R-010 - Salle 11 Physics biasing techniques
16:20 Hadronics physics II - Alberto Ribon (CERN)
Hadronics physics II
- Alberto Ribon (CERN)
16:20 - 17:15
Room: 593/R-010 - Salle 11 - Pre-compound and de-excitation models - Intra-nuclear cascade models (Bertini, Binary, Liege (INCL)) - String models (Fritiof, Quark Gluon String) - Capture/stopping models - Fission models - Elastic process - Neutron physics - Ion physics
17:15 Questions & Answers
Questions & Answers
17:15 - 17:45
Room: 593/R-010 - Salle 11 General discussion Answers on topics raised on Mattermost

17:45 Adjourn
Adjourn
17:45 - 17:55
Room: 593/R-010 - Salle 11

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