Welcome to the TOPAS documentation!

Note

A PDF version of the documentation is found by clicking the “Read the Docs” panel in the bottom-left corner of the website.

Getting Started

• Introduction to TOPAS
• Authors
• Citation
• User Support and Contributions
• History

Control Everything from Parameter Files

• Introduction to Parameter System
• Default Parameters
• Overall Control
• Materials
• Geometry Components
• Particle Sources
• Physics
• Scoring
• Graphics
• Time Features
• Variance Reduction
• Outcome Modeling
• The TOPAS Graphical User Interface

Example Parameter Files

• Basic
• Brachytherapy
• Graphics
• MVLinac
• Nozzle
• Optical
• Outcome
• Patient
• PhaseSpace
• Scoring
• SpecialComponents
• TimeFeature
• UCSFETF
• VarianceReduction

How to Extend TOPAS

• Introduction to Extensions
• Custom Geometry Components
• Custom Particle Sources
• Custom Physics Lists and Physics Modules
• Custom Scorers
• Custom Outcome Models
• Custom Filters
• Custom Fields
• Custom Imaging to Material Conversion
• Additional User Hooks

Provided Extensions

• Proton RBE Scorers