Tutorials

Tutorial for GUI / Visualization / Analysis

Notes

Tutorials will start at the novice level, aimed at users who are new to Geant4, and will then proceed to advanced lectures for experienced users. Refer to the workshop schedule for detailed dates and times.

Please be sure to register for the tutorials so that we can arrange for sufficient seating and study materials. Unregistered attendees may participate in the tutorials only as space permits.

SLAC will provide only a VERY SMALL number of dedicated computers for the tutorials. Attendees are strongly encouraged to bring their own laptop machines (laptops are preferable in any case since the user will then go home with Geant4 software already installed). Power and DHCP connections (wireless and wired) will be readily available.

An installation CD will be provided with the latest versions of all required physics software including Geant4, CLHEP, and some GUI/Visualization/Analysis tools. But users are expected to arrive with an appropriate C++ compiler on their laptop as follows:

Linux: RedHat 6.1 or 6.2 with gcc-2.95.2 (or 2.95.3); RedHat 7.2 with gcc-2.96-98
Windows: Windows NT or 2000 with VisualC++ 6.0 or later

Linked lecture notes are very preliminary at this moment. We expect many updates/modification by the begining of the workshop.

Introduction

Welcome
Feb. 18th (Mon) 9:00 - 9:20
Makoto Asai (SLAC): Welcome; Structure of the tutorials; Information
General introduction to Geant4
Feb. 18th (Mon) 9:20 - 9:40
John Apostolakis (CERN): Scope of Geant4; Geant4 collaboration; User support

Installation tutorial

Installation of Geant4
Feb. 18th (Mon) 9:40 - 10:30
Gabriele Cosmo (CERN), Takashi Sasaki (KEK): Installation of CLHEP and Geant4 libraries; Environment variables, make files; Making an executable
Installation of Visualization/GUI/Analysis tools
Feb. 18th (Mon) 11:00 - 11:45
John Allison (Manchester), Tony Johnson (SLAC), Joseph Perl (SLAC): Introduction of available packages; Installation of Visualization/GUI/Analysis packages; Environment variables for Visualization/GUI/Analysis packages
Installation workout
Feb. 18th (Mon) 11:45 - 14:00
Gabriele Cosmo (CERN), Takashi Sasaki (KEK), Makoto Asai (SLAC),
John Allison (Manchester), Tony Johnson (SLAC), Joseph Perl (SLAC): Because of National holiday, the SLAC cafeteria will be closed.; Sandwich and beverage catering will be arranged.; Attendees are expected to try the installation.

Novice level tutorial

Getting started
Feb. 18th (Mon) 14:00 - 14:50
Makoto Asai (SLAC): Structure of Geant4 toolkit; Basic concepts of run, event, track, step, trajectory, hit, digit, etc. and corresponding classes; Execution flow and states in Geant4; Manager classes in Geant4; main(); User initialization classes; User action classes
Primary particle generation
Feb. 18th (Mon) 14:50 - 15:10
Makoto Asai (SLAC): G4VPrimaryGeneratorAction class; G4ParticleGun, G4HEPEvtInterface; General particle source
Material
Feb. 18th (Mon) 15:10 - 15:30
Michel Maire (IN2P3): Unit system; Definition of material, element, isotope; Material table
Geometry description
Feb. 18th (Mon) 16:00 - 17:00
Gabriele Cosmo (CERN): Concepts ofG4LogicalVolume, G4VPhysicalVolume : Placements, parameterised volumes, replicas; Concept of G4VSolid : CSG, BREP, Boolean solids; Optimization of geometry : Voxelization and "smartlessness"; Concept of G4VTouchable
Magnetic field
Feb. 18th (Mon) 17:00 - 17:30
John Apostolakis (CERN): How to define magnetic field; Integration of the field
Detector sensitivity
Feb. 18th (Mon) 17:30 - 18:30
Makoto Asai (SLAC): Sensitive detector; Hit and HitsCollection; Readout geometry
Documents, user forum and user supports
Feb. 19th (Mon) 18:30 - 19:00
Dennis Wright (SLAC): Users guides; Source code browser; User forum; Geant4 Web sites and mailing list; User support
User commands
Feb. 19th (Tue) 9:00 - 10:00
Makoto Asai (SLAC): Built-in commands; Macro file; Alias; User-defined commands; G4cout, G4cerr, G4endl

Tutorial for GUI / Visualization / Analysis

Visualization/GUI/Analysis (Part I)
Feb. 19th (Tue) 10:00 - 10:30
John Allison (Manchester): How to use Visualization/GUI packages
Visualization/GUI/Analysis (Part II) (PowerPoint file)
Feb. 19th (Tue) 11:00 - 12:30
John Allison (Manchester), Tony Johnson (SLAC), Joseph Perl (SLAC): Demonstration of Visualization/GUI/Analysis packages

Tutorial for physics processes

Physics process in general
Feb. 19th (Tue) 14:00 - 15:00
Marc Verderi (IN2P3): G4Track, G4DynamicParticle, G4ParticleDefinition; AtRest, AlongStep, PostStep processes; Production range cut; How to implement G4UserPhysicsList; User-defined limits
Transportation process
Feb. 19th (Tue) 15:00 - 15:30
John Apostolakis (CERN): Navigator and transportation process; Safety; Propagation in field
Decay process
Makoto Asai (SLAC)
Feb. 19th (Tue) 15:50 - 16:10: Decay process in general; Pre-assigned decay channel; Radioactive decay
Standard electromagnetic processes
Feb. 19th (Tue) 16:10 - 17:10
Michel Maire (IN2P3): Ionization, delta-ray, multiple scattering and their applicable energy ranges; Integral approach and step length
Common issues on EM and Hadronics processes
Vladimir Ivanchenck (CERN)
Feb. 19th (Tue) 17:10 - 17:30
Relativistic Particle Energy Loss
Feb. 19th (Tue) 17:30 - 18:00
Vladimir Grichine (CERN): Optical, ultraviolet and X-ray Cerenkov radiation; Ionisation energy losses in the terms of extended PAI model; Transition radiation in complex radiators
Low energy electromagnetic processes
Feb. 20th (Wed) 9:00 - 10:00
Petteri Nieminen (ESA): Processes and their applicability
Optical processes
Feb. 20th (Wed) 10:00 - 10:30
Peter Gumplinger (TRIUMF): Available processes; Optical propeties
Muon-nucleous and other lepton-hadron processes
Feb. 20th (Wed) 11:00 - 11:30
Hans-Peter Wellisch (CERN): Processes and their applicability
Hadronic processes (Part I)
Feb. 20th (Wed) 11:30 - 12:30
Hans-Peter Wellisch (CERN): Cross-section and model; Available data set and models and their applicability
Hadronic processes (Part II)
Feb. 20th (Wed) 14:00 - 15:00
Hans-Peter Wellisch (CERN): Use cases and alternatives

Advanced level tutorial

Adding new process
Feb. 20th (Wed) 15:00 - 15:30
Marc Verderi (IN2P3): Process, model, particle change; Methods and return values in G4VProcess
Shower parameterization
Feb. 20th (Wed) 16:00 - 16:30
Marc Verderi (IN2P3): Envelope geometry; Parameterization scheme; Direct coupling with sensitive detector
Geometry, advanced features
Feb. 20th (Wed) 16:30 - 17:15
Gabriele Cosmo (CERN): Grouping volumes : G4AssemblyVolume; Reflection of solids and hierachies; User-defined solid; Interface to CAD systems; Debugging tools
Stack management, digitization and pile-up
Feb. 20th (Wed) 17:15 - 18:00
Makoto Asai (SLAC): Stacks in Geant4; Suspended track, postponed track; Digitization; Treatment of multiple events

workshop local organizer