First steps with Geant4

Contribution List

27. Introduction

Mihaly Novak (CERN)

27/03/2023, 14:00

• scope and goal of this course
• a short introduction to Geant4
• introduction of some important Geant4 concepts such as run, event, track, etc.

54. Preliminaries

Mihaly Novak (CERN)

27/03/2023, 15:50

• introduction of our work environment (i.e. the virtual machine installation,
  demystification of Geant4 install and CMake configuration, etc.)
• recapitulation of some object oriented concept of C++ crucial for the course
  (such as interface and their usage)

31. Detector Description

Mihaly Novak (CERN)

28/03/2023, 14:00

• introduction of the G4VUserDetectorConstruction interface
• introduction to the Geant4 geometry description
• introduction to the Geant4 material description

33. Implementation of the Detector-Construction of our application

Mihaly Novak (CERN)

28/03/2023, 15:55

• we will develop the main of our application then we start to implement the
  mandatory components, first the DetectorConstruction, i.e. the detector
  geometry and material description

38. Complete the Detector-Construction implementation

Mihaly Novak (CERN)

29/03/2023, 14:00

39. Primary particle generation

Mihaly Novak (CERN)

29/03/2023, 16:00

• a (very basic) look behind multi-threaded Geant4
• introduction of the G4VUserPrimaryGeneratorAction and usage
• introduction of G4VUserActionInitialization interface
• implementation of the primary generator of our application

46. Complete the primary generator implementation

Mihaly Novak (CERN)

30/03/2023, 14:00

42. Introduction to (some of) the further Geant4 user actions

Mihaly Novak (CERN)

30/03/2023, 16:00

• recapitulation of the related Geant4 concepts (run, event, step)
• introduction of the Stepping-, Event- and Run-Actions and the related Geant4
  interfaces (G4UserRunAction, G4UserEventAction, G4UserSteppingAction)
• implement the remaining user actions of our application

45. Add some flexibility to our application through UI commands

Mihaly Novak (CERN)

31/03/2023, 14:00

• introduction to Geant4 UI commands
• implement some UI commands to allow e.g. change of the target material, thickness

53. Recap

Mihaly Novak (CERN)

31/03/2023, 15:50

• enjoy using the application that we developed together, compare the results
  with experimental data
• summary of the course and outlook

55. Checkin

Preparation

Problems with Geant4 Virtual Machine ?

Issue with alternative Geant4 installation (for those with Mac computers with M1 processor.)

41. Defining / using magnetic field

John Apostolakis (CERN)

26. Describing your detector - Concepts

Gabriele Cosmo (CERN)

37. Extracting information: Part 2 - scoring and hits

John Apostolakis (CERN)

Overview of sensitive detectors and built-in scorers.

48. Followup topics - questions & answers

Alberto Ribon (CERN), Gabriele Cosmo (CERN), John Apostolakis (CERN), Mihaly Novak (CERN), Vladimir Ivantchenko (CERN)

Extension of existing concepts

34. Generation of primaries - lecture & hands-on

Vladimir Ivantchenko (CERN)

43. Hadronic physics

Alberto Ribon (CERN)

35. Hands on

John Apostolakis (CERN), Mihaly Novak (CERN), Vladimir Ivantchenko (CERN)

• Finding information in G4Step, G4Track
• Creating Sensitive Detector ProcessHits() method that extract energy deposit
• Alternative method: Built-in scorer

50. Hands on - EM physics

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

• Simple magnetic field
• EM physics exercises
• Hadronic: choose hadronic physics list + compare profile of pion shower to electron shower

51. Hands on - Hadronics

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

• Hadronic: choose hadronic physics list + compare profile of pion shower to electron shower

44. Hands on - Magnetic Field

John Apostolakis (CERN)

Creating and registering a simple magnetic field.

49. Hands on - messengers

John Apostolakis (CERN), Mihaly Novak (CERN)

• Use of messengers

52. Hands on - multithreading

John Apostolakis (CERN), Mihaly Novak (CERN)

• Running in multi-threading mode

29. Hands on: Adding volumes to the world

Gabriele Cosmo (CERN), John Apostolakis (CERN)

28. Hands-on: Examine parts of a first example

Gabriele Cosmo (CERN), John Apostolakis (CERN)

57. Lecturer Preparation

47. Multi-threading

John Apostolakis (CERN)

30. Questions & Answers plus Homework

36. Review of homework - questions & answers

John Apostolakis (CERN), Mihaly Novak (CERN), Vladimir Ivantchenko (CERN)

40. Review of homework - questions & answers

John Apostolakis (CERN), Mihaly Novak (CERN)

32. Visualisation - lecture & hands-on

John Apostolakis (CERN), Mihaly Novak (CERN)

• Visualise your detector geometry

Brief overview and hands-on exercises

24. Welcome - Introduction

John Apostolakis (CERN)

How the course will proceed

Technical aspects -- using Zoom breakout rooms to interact with lecturers during hands-on session

Interacting via Mattermost for questions 'online'

Exercise follow up

25. What is Geant4 ?

John Apostolakis (CERN)

The toolkit / library 'nature' of Geant4 and how differ from radiation transport tools ?

Is there is no Geant4 'executable' ? If not, why ?
Variety of existing Geant4-based application / tools.
How do you use Geant4 ?

56. Zoom check

Preparation