Creating the Simulation World

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Where to Move

Move chapter:

• ☰ Introduction to Geant4
  • ☰ What Is Geant4?
  • ☰ How Geant4 Works
  • ☰ Geant4 Simulation Structure
  • ☰ Geant4 and C++
• ☰ Installing Geant4
  • ☰ Geant4 Requirements
  • ☰ Installing Geant4 on Linux
  • ☰ Installing Visualization Libraries
  • ☰ Verifying the Installation
  • ☰ Geant4 Example Applications
• ☰ C++ Basics for Geant4
  • ☰ Classes and Objects
  • ☰ Inheritance
  • ☰ Pointers and References
  • ☰ Header and Source Files
  • ☰ Standard Library Containers
• ☰ Creating Your First Geant4 Project
  • ☰ Project Structure
  • ☰ CMake Configuration
  • ☰ The Main Program
  • ☰ User Initialization Classes
  • ☰ Building and Running
• ☰ Geant4 Units and Constants
  • ☰ Geant4 Unit System
  • ☰ Using Units in C++
  • ☰ Physical Constants
  • ☰ Printing Values with Units
• ☰ Creating the Simulation World
  • ☰ DetectorConstruction
  • ☰ Solids
  • ☰ Logical Volumes
  • ☰ Physical Volumes
  • ☰ Creating the World Volume
• ☰ Materials
  • ☰ Geant4 Materials
  • ☰ NIST Material Database
  • ☰ Common Materials
  • ☰ Creating Custom Materials
  • ☰ Detector Materials
• ☰ Building Detector Geometry
  • ☰ Basic Geometrical Shapes
  • ☰ Boolean Solids
  • ☰ Positioning Volumes
  • ☰ Repeated Geometry
  • ☰ Detector Arrays
  • ☰ Geometry Overlap Checking
• ☰ Geometry Visualization
  • ☰ Visualization in Geant4
  • ☰ Starting the Visualization System
  • ☰ Changing the View
  • ☰ Visualization Attributes
  • ☰ Displaying Particle Tracks
• ☰ Primary Particle Generation
  • ☰ PrimaryGeneratorAction
  • ☰ Particle Gun
  • ☰ Particle Energy
  • ☰ Particle Position
  • ☰ Particle Direction
  • ☰ Common Particle Sources
• ☰ General Particle Source
  • ☰ Introduction to GPS
  • ☰ Position Distributions
  • ☰ Angular Distributions
  • ☰ Energy Distributions
  • ☰ Configuring Sources with Macros
• ☰ Physics Lists
  • ☰ What Is a Physics List?
  • ☰ Reference Physics Lists
  • ☰ Electromagnetic Physics
  • ☰ Gamma Interactions
  • ☰ Positron Physics
  • ☰ Hadronic Physics
  • ☰ Choosing a Physics List
• ☰ Particle Tracking
  • ☰ Tracks
  • ☰ Steps
  • ☰ Energy Deposition
  • ☰ Track Status
  • ☰ Parent and Secondary Particles
• ☰ User Actions
  • ☰ RunAction
  • ☰ EventAction
  • ☰ SteppingAction
  • ☰ TrackingAction
  • ☰ StackingAction
  • ☰ ActionInitialization
• ☰ Sensitive Detectors
  • ☰ What Is a Sensitive Detector?
  • ☰ Creating a Sensitive Detector
  • ☰ Hits
  • ☰ Hit Collections
  • ☰ Assigning Sensitive Detectors
• ☰ Recording Energy Deposition
  • ☰ Energy Deposition
  • ☰ Energy per Event
  • ☰ Energy per Detector
  • ☰ Energy Spectra
  • ☰ Detector Efficiency
• ☰ Particle Position and Timing
  • ☰ Particle Position
  • ☰ Interaction Position
  • ☰ Global Time
  • ☰ Time of Flight
  • ☰ Detector Timing
• ☰ Geant4 Analysis System
  • ☰ Introduction to G4AnalysisManager
  • ☰ Histograms
  • ☰ Ntuples
  • ☰ Filling Ntuples
  • ☰ Writing Output Files
  • ☰ Closing Analysis Files
• ☰ Geant4 and ROOT
  • ☰ ROOT Output from Geant4
  • ☰ Reading Geant4 Output with ROOT
  • ☰ Plotting Energy Spectra
  • ☰ Event Analysis
  • ☰ Simulation-to-Analysis Workflow
• ☰ Geant4 Macro Commands
  • ☰ Macro Files
  • ☰ Run Commands
  • ☰ Particle Source Commands
  • ☰ Visualization Commands
  • ☰ Controlling Simulations Without Recompiling
• ☰ Random Numbers and Reproducibility
  • ☰ Monte Carlo Random Numbers
  • ☰ Setting Random Seeds
  • ☰ Running Independent Simulations
  • ☰ Reproducing an Event
• ☰ Multithreading
  • ☰ Geant4 Multithreading
  • ☰ Running with Multiple Threads
  • ☰ Thread-Safe User Code
  • ☰ Analysis with Multithreading
  • ☰ Performance Considerations
• ☰ Practical Example: Gamma-Ray Detector
  • ☰ Project Overview
  • ☰ Creating the World
  • ☰ Creating the Detector
  • ☰ Adding the Material
  • ☰ Creating a Gamma Source
  • ☰ Selecting Electromagnetic Physics
  • ☰ Recording Energy Deposition
  • ☰ Creating an Energy Spectrum
  • ☰ Simulating Detector Resolution
  • ☰ Analyzing the Spectrum with ROOT
• ☰ Practical Example: Radiation Shielding
  • ☰ Project Overview
  • ☰ Creating the Source
  • ☰ Creating the Shield
  • ☰ Comparing Shielding Materials
  • ☰ Varying Shield Thickness
  • ☰ Recording Transmitted Particles
  • ☰ Calculating Transmission
  • ☰ Calculating Attenuation
  • ☰ Comparing Simulation Results
• ☰ Practical Example: PET Scanner
  • ☰ Introduction to PET Simulation
  • ☰ Creating a PET Detector Ring
  • ☰ Creating Detector Crystals
  • ☰ Assigning Detector IDs
  • ☰ Creating a Positron Source
  • ☰ Simulating Positron Annihilation
  • ☰ Recording Detector Hits
  • ☰ Applying an Energy Window
  • ☰ Finding Coincidence Events
  • ☰ Recording Detector Positions
  • ☰ Creating Lines of Response
  • ☰ Saving PET Events to ROOT
  • ☰ Analyzing PET Data with ROOT
• ☰ Practical Example: Proton Beam in Water
  • ☰ Project Overview
  • ☰ Creating the Water Phantom
  • ☰ Creating a Proton Beam
  • ☰ Selecting the Physics List
  • ☰ Recording Energy Deposition
  • ☰ Dividing the Phantom into Slices
  • ☰ Calculating Depth Dose
  • ☰ Observing the Bragg Peak
  • ☰ Plotting the Depth-Dose Curve
• ☰ Detector Resolution and Smearing
  • ☰ Ideal vs Realistic Detector Response
  • ☰ Energy Resolution
  • ☰ Position Resolution
  • ☰ Time Resolution
  • ☰ Applying Detector Effects
  • ☰ Comparing Ideal and Smeared Results
• ☰ Simulation Validation
  • ☰ Why Validate a Simulation?
  • ☰ Checking Geometry
  • ☰ Checking Energy Conservation
  • ☰ Comparing with Analytical Calculations
  • ☰ Comparing with Reference Data
  • ☰ Statistical Uncertainties
  • ☰ Number of Simulated Events
• ☰ Improving Simulation Performance
  • ☰ Geometry Performance
  • ☰ Physics List Performance
  • ☰ Production Cuts
  • ☰ Reducing Unnecessary Output
  • ☰ Multithreading
  • ☰ Running Large Simulations
  • ☰ Parameter Scans
• ☰ Debugging Geant4 Simulations
  • ☰ Compilation Errors
  • ☰ Geometry Errors
  • ☰ Overlapping Volumes
  • ☰ Missing Particles
  • ☰ Missing Energy Deposition
  • ☰ Physics List Problems
  • ☰ Sensitive Detector Problems
  • ☰ Empty Output Files
  • ☰ Segmentation Faults
  • ☰ Using Geant4 Verbose Output
• ☰ Writing Better Geant4 Applications
  • ☰ Organizing Source Code
  • ☰ Separating Geometry and Analysis
  • ☰ Using Configuration Parameters
  • ☰ Avoiding Hard-Coded Values
  • ☰ Creating Reusable Detector Components
  • ☰ Naming Conventions
  • ☰ Documentation
  • ☰ Version Control with Git
• ☰ Advanced Geometry
  • ☰ Parameterized Geometry
  • ☰ Replica Volumes
  • ☰ Nested Geometry
  • ☰ Complex Detector Arrays
  • ☰ Importing CAD Geometry
  • ☰ Exporting Geometry with GDML
• ☰ Optical Photons
  • ☰ Introduction to Optical Physics
  • ☰ Optical Photons
  • ☰ Material Optical Properties
  • ☰ Scintillation Light
  • ☰ Optical Surfaces
  • ☰ Photodetectors
  • ☰ Counting Optical Photons
• ☰ Medical Physics Applications
  • ☰ Geant4 in Medical Physics
  • ☰ Radiation Dose Simulation
  • ☰ PET Simulation
  • ☰ SPECT Simulation
  • ☰ Radiotherapy Simulation
  • ☰ Proton Therapy Simulation
  • ☰ Biological Tissue Materials
• ☰ Final Project
  • ☰ Project Overview
  • ☰ Define the Simulation Goal
  • ☰ Create the Geometry
  • ☰ Define Materials
  • ☰ Configure the Particle Source
  • ☰ Select the Physics List
  • ☰ Implement Sensitive Detectors
  • ☰ Record Simulation Data
  • ☰ Run the Simulation
  • ☰ Analyze the Results with ROOT
  • ☰ Validate the Simulation
  • ☰ Create Scientific Figures
  • ☰ Document the Simulation
• ☰ Appendices
  • ☰ Geant4 Class Cheat Sheet
  • ☰ Geant4 Units Cheat Sheet
  • ☰ Common Geant4 Macro Commands
  • ☰ Common Geometry Classes
  • ☰ Common Particle Definitions
  • ☰ Common Physics Lists
  • ☰ G4AnalysisManager Cheat Sheet
  • ☰ Common Visualization Commands
  • ☰ Common Geant4 Errors and Solutions
  • ☰ Recommended Geant4 Project Structure
  • ☰ Recommended Geant4 Simulation Workflow