Geant4 Advanced Course @ CERN

Contribution List

1. Introduction

John Apostolakis (CERN), Makoto Asai (SLAC National Accelerator Laboratory (US))

28/09/2020, 09:00

• General introduction to the course

20. Geometry I

Gabriele Cosmo (CERN)

28/09/2020, 09:10

• G4VUserDetectorConstruction class
• Geometrical shapes: solids
• Logical & Physical volumes
• Placements, Parametrised, Replicated volumes, basics
• Geometry checking tools
• GDML interface

21. Magnetic Field

John Apostolakis (CERN)

28/09/2020, 09:40

• Magnetic field
• Field integration and other types of field
• Steppers & Interpolation

22. Physics

Vladimir Ivantchenko (CERN)

28/09/2020, 10:30

• Particles
• Ions
• Processes
• What happens at a step
• Order of initialisation and execution
• Cuts
• How to prepare custom particle and process

39. Hadronic Physics - I

Alberto Ribon (CERN)

28/09/2020, 11:20

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

8. Discussion

Alberto Ribon (CERN), John Apostolakis (CERN), Vladimir Ivantchenko (CERN)

28/09/2020, 12:00

• Magnetic field
• EM physics
• Hadronic physics

28. Definition of UI commands

Makoto Asai (SLAC National Accelerator Laboratory (US))

29/09/2020, 09:00

• G4UIExecutive
• Definition of custom UI commands

6. Scoring

Makoto Asai (SLAC National Accelerator Laboratory (US))

29/09/2020, 09:20

• Sensitive detectors & Hits
• Basic scoring commands
• Advanced scoring

16. Additional User classes

Makoto Asai (SLAC National Accelerator Laboratory (US))

29/09/2020, 09:50

• User limits
• User information classes
• Stack management

40. Discussion

Makoto Asai (SLAC National Accelerator Laboratory (US))

29/09/2020, 10:20

• UI commands
• User actions
• Scoring

17. Multithreading

John Apostolakis (CERN)

29/09/2020, 11:00

• Thread safety
• Reading input file in multithreaded mode

19. Questions & Answers

29/09/2020, 11:30

General discussion on topics raised on Mattermost

23. Electromagnetic physics

Mihaly Novak (CERN)

30/09/2020, 09:00

• Energy loss
• Cuts per region
• Models per region
• Atomic de-excitation
• Multiple and single scattering
• Documentation for electromagnetic physics

24. Electromagnetic physics II - Optical Photons

Alexander Howard (Imperial College (GB))

30/09/2020, 10:15

Optical photons - generation, propagation and their physics processes

25. Discussion

Alexander Howard (Imperial College (GB)), Mihaly Novak (CERN), Vladimir Ivantchenko (CERN)

30/09/2020, 11:15

• Electromagnetic physics
• Optical photon generation and optical processes

36. Geometry II

Gabriele Cosmo (CERN)

01/10/2020, 09:00

• Placements, Parameterised and Replicated volumes, introduction
• Divided volumes
• Geometrical regions
• Nested parameterisations
• Assembly volumes
• Reflected volumes
• Geometry optimization
• CAD interface
• Parallel geometries

37. Discussion

Gabriele Cosmo (CERN), John Apostolakis (CERN)

01/10/2020, 10:00

• Geometry
• Navigation & Transportation

13. Physics Lists

Gunter Folger (CERN)

01/10/2020, 10:40

• Introduction to Physics Lists
• The Geant4 Physics List interface
• Using pre-packaged physics lists
• How to choose a physics list
• Examples

18. Hadronics physics II

Alberto Ribon (CERN)

01/10/2020, 11:40

• 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

38. Discussion

Alberto Ribon (CERN), Gunter Folger (CERN)

01/10/2020, 12:20

• Physics lists
• Hadronic physics

29. Event Biasing

Marc Verderi (Centre National de la Recherche Scientifique (FR))

02/10/2020, 09:00

• Overview
• Geometrical biasing
• Bremsstrahlung splitting

33. Physics Biasing

Alberto Ribon (CERN)

02/10/2020, 09:50

Physics biasing techniques

34. Discussion

Alberto Ribon (CERN), Marc Verderi (Centre National de la Recherche Scientifique (FR))

02/10/2020, 10:20

• Event biasing
• Physics biasing

30. Fast Simulation

Anna Zaborowska (CERN)

02/10/2020, 11:00

• Fast parameterised simulation
• G4VFastSimulationModel
• G4FastSimulationManagerProcess
• Use of "Ghost" volumes
• Techniques of fast simulation

35. Questions & Answers

02/10/2020, 12:00

General discussion
Answers on topics raised on Mattermost

31. Afternoon Session 1

32. Afternoon Session 2

15. Event biasing

Makoto Asai (SLAC National Accelerator Laboratory (US))

• Overview
• Geometrical biasing
• Bremsstrahlung splitting

26. Fast Simulation

Anna Zaborowska (CERN)

• Fast parameterised simulation
• G4VFastSimulationModel
• G4FastSimulationManagerProcess
• Use of "Ghost" volumes
• Techniques of fast simulation
• Demo/Exercises

12. Generators

Witold Pokorski (CERN)

• G4VUserPrimaryGeneratorAction class
• Primary vertex and primary particle
• Built-in primary particle generators
• Interfaces with external generators

10. Geometry - I

Gabriele Cosmo (CERN)

• G4VUserDetectorConstruction class
• Geometrical shapes: solids
• Logical & Physical volumes
• Placements, Parametrised, Replicated volumes, basics
• Geometry checking tools
• GDML interface
• Magnetic field, basics

11. Hands-on - II

Mihaly Novak (CERN), Vladimir Ivantchenko (CERN)

Exercise on physics processes & setup
Electromagnetic examples

9. Material Definition

Mihaly Novak (CERN)

• Defining Materials
• NIST Material database

7. Multithreading - I

John Apostolakis (CERN)

• Introduction to multithreading
• UI commands for multithreading

14. Particles and processes

Vladimir Ivantchenko (CERN)

• Particles
• Processes
• What happens at a step
• Cuts

27. Physics Biasing

Alberto Ribon (CERN), Makoto Asai (SLAC National Accelerator Laboratory (US))

Physics biasing techniques

5. User Actions, Hits and Digits

Witold Pokorski (CERN)

• Mandatory user actions
• Optional user actions
• Sensitive detectors
• Hit/digits collections

2. User Documents and Examples

Gunter Folger (CERN)

• Installation Guide
• Application & Toolkit developers manuals
• Physics reference manual
• Basic examples in Geant4 distribution
• Extended and advanced examples in Geant4 distribution
• GitHub, LXR source code browser
• Reporting problems/requirements, HyperNews

3. User Interface - I

Mihaly Novak (CERN)

• Syntax of UI command
• Interactive mode / batch mode
• G4UIExecutive class

4. Visualization - I

Mihaly Novak (CERN)

• Introduction to Visualization
• Quick Looks at Visualization Drivers
• Basic Visualization Commands