Geant4 tutorial course at Canadian Nuclear Laboratories

26 Aug 2019, 08:00 → 30 Aug 2019, 17:00 America/New_York

Dennis Wright (SLAC), Makoto Asai (SLAC)

Monday, 26 August

08:15 → 08:45 Registration

08:45 → 09:00 Introduction

09:00 → 09:45 Lecture

09:00 Kernel I

• General introduction and brief history
• What’s new in version 10
• Highlights of user applications
• Geant4 license
• Geant4 kernel
  -- Basic concepts and kernel structure
  -- User classes

Speaker: Makoto Asai (SLAC)

Kernel1.pdf

09:45 → 10:15 break

10:15 → 11:45 Lecture

10:15 User documents and examples

Covers the Geant4 website, user guides, basic, extended and advanced examples, and where to get help.

Speaker: Dennis Wright (SLAC)

ExampleDocsCRNL.pdf

10:45 User interface I

• Command syntax
• Macro file
• G4UIExective

Speaker: Makoto Asai (SLAC)

UserInterface1.pdf

11:15 Visualization I

• Visualization basics
• Major visualization drivers

Speaker: Makoto Asai (SLAC)

Visualization1.pdf

11:45 → 13:00 lunch break

13:00 → 14:30 Lecture

13:00 Scoring I

• Introduction to sensitivity
• Command-based scoring
• Add a new scorer/filter

Speaker: Makoto Asai (SLAC)

Scoring1.pdf

13:30 Physics I

Geant4 physics lists: what they are and how to use them.

Speaker: Dennis Wright (SLAC)

Physics1CRNL.pdf

14:30 → 15:00 break

15:00 → 16:30 Hands-on: I

15:00 Hands-on I

Hands-on instruction

HandsOnIntro.pdf

Tuesday, 27 August

08:15 → 09:45 Lecture

08:15 Material definition

How materials are defined and how they can be used in an application.

Speaker: Dennis Wright (SLAC)

MaterialsCRNL.pdf

08:45 Geometry I

• Introduction
• G4VUserDetectorConstruction class
• Solid and shape
• Logical volume
• Region
• Physical volume
• Placement

Speaker: Makoto Asai (SLAC)

Geometry1.pdf

09:45 → 10:15 break

10:15 → 11:45 Lecture

10:15 Primary particle

• Introduction
• Built-in primary particle generators
  -- Particle gun
  -- Interfaces to HEPEVT and HEPMC
  -- General particle source
• Pre-assigned decay

Speaker: Makoto Asai (SLAC)

PrimaryParticle.pdf

10:45 Physics II

Provides an overview of Geant4 physics, a discussion of physics processes and a description of secondary particle production thresholds.

Speaker: Dennis Wright (SLAC)

Physics2CRNL.pdf

11:45 → 13:00 Lunch break

13:00 → 14:30 Lecture

13:00 Physics III

Covers particle decays, optical photon interactions and solid state processes.

Speaker: Dennis Wright (SLAC)

Physics3CRNL.pdf

13:30 Geometry II

• Various ways of placing volumes
  -- Parameterized volume
  -- Replicated volume
  -- Divided volume
  -- Nested parameterization
  -- Reflected volume
  -- Assembly volume
• Touchable

Speaker: Makoto Asai (SLAC)

Geometry2.pdf

14:30 → 15:00 break

15:00 → 16:30 Hands-on: II

15:00 Hands-on II

Hands-on instruction

Wednesday, 28 August

08:15 → 09:45 Lecture

08:15 EM Physics I

An overview of Geant4 electromagnetic physics, with discussions of multiple scattering, energy fluctuations and atomic de-excitation.

Speaker: Dennis Wright (SLAC)

EMPhys1CRNL.pdf

09:00 Geometry III

• Magnetic field
• Field integration and other types of field
• GDML/CAD interfaces
• Geometry checking tools
• Geometry optimization

Speaker: Makoto Asai (SLAC)

Geometry3.pdf

09:45 → 10:15 break

10:15 → 11:45 Lecture

10:15 EM physics II

Low energy electromagnetic physics processes and models in Geant4 and how to use them.

Speaker: Dennis Wright (SLAC)

EMPhys2CRNL.pdf

11:00 Scoring II

• Define scorers in the tracking volume
• Accumulate scores for a run
• Sensitive detector vs. primitive scorer
• Basic structure of detector sensitivity
• Sensitive detector and hit
• Touchable
• Use of G4HCofThisEvent class

Speaker: Makoto Asai (SLAC)

Scoring2.pdf

11:45 → 13:00 Lunch break

13:00 → 13:45 Lecture

13:00 EM physics III

A detailed discussion of how ionization, bremsstrahlung, multiple scattering and transportation compete to limit step size and choose an interaction.

Speaker: Dennis Wright (SLAC)

EMPhys3CRNL.pdf

13:45 → 14:30 Hands-on: III

13:45 Hands-on III part 1

Hands-on instruction

14:30 → 15:00 break

15:00 → 16:30 Hands-on: III

15:00 Hands-on III part 2

Hands-on instruction

Thursday, 29 August

08:15 → 09:45 Lecture

08:15 Hadronic physics I

An overview of Geant4 hadronic physics and discussions of precompound and intranuclear cascade models.

Speaker: Dennis Wright (SLAC)

HadPhys1CRNL.pdf

09:00 User interface II

• Mechanism of UI command
• Defining basic UI command
• Defining complex UI command
• G4GenericMessenger
• UI command in multithreaded mode

Speaker: Makoto Asai (SLAC)

UserInterface2.pdf

09:45 → 10:15 break

10:15 → 11:45 Lecture

10:15 Multithreading I

• Introduction
• Multithreading in Geant4 : the basics
• UI commands for multithreading

Speaker: Makoto Asai (SLAC)

Multithreading1.pdf

11:00 Hadronic physics II

A discussion of hadron elastic models, low energy neutrons, ion-ion models, capture, stopping and fission.

Speaker: Dennis Wright (SLAC)

HadPhys2CRNL.pdf

11:45 → 13:00 Lunch break

13:00 → 14:30 Lecture

13:00 Hadronic physics III

A discussion of QCD string models, gamma- and lepto-nuclear models and radioactive decay.

Speaker: Dennis Wright (SLAC)

HadPhys3CRNL.pdf

13:45 Geometry IV

• Parallel geometry
• Layered mass geometry
• Moving objects

Speaker: Makoto Asai (SLAC)

Geometry4.pdf

14:30 → 15:00 break

15:00 → 16:30 Hands-on: IV

15:00 Hands-on IV

Hands-on instruction

Friday, 30 August

08:15 → 09:45 Lecture

08:15 Analysis

Speaker: Makoto Asai (SLAC)

Analysis.pdf

08:45 Event biasing

A discussion of specific biasing options, including reverse Monte Carlo, and the general Geant4 biasing framework.

Speaker: Dennis Wright (SLAC)

BiasingCRNL.pdf

09:30 Visualization II

Speaker: Makoto Asai (SLAC)

Visualization2.pdf

09:45 → 10:15 break

10:15 → 11:45 Lecture

10:15 Choosing a Physics List

Tips on choosing a physics list and validating it.

Speaker: Dennis Wright (SLAC)

ChoosePhysList.pdf

10:45 Kernel II

• User limits
• Attaching user information to G4 classes
• Fast simulation (a.k.a. shower parameterization)
• Stacking mechanism

Speaker: Makoto Asai (SLAC)

Kernel2.pdf

11:45 → 13:00 Lunch break

13:00 → 14:30 Lecture

13:00 Multithreading II

• The challenge of MT : thread safety
• Reading input file in multithreaded mode

Speaker: Makoto Asai (SLAC)

Multithreading2.pdf

13:30 How to update your Geant4 installation

Tips on upgrading to the latest Geant4 version and where to get help.

Speaker: Dennis Wright (SLAC)

UpgradingCRNL.pdf

14:00 Q/A and closing remarks

Speaker: Makoto Asai (SLAC)

14:30 → 15:00 break

15:00 → 16:30 Additional discussions