1. Running ANTS

• 1.1. Getting Started
  • 1.1.1. Installation
  • 1.1.2. Required Input Data
  • 1.1.3. Current Limitations
  • 1.1.4. Notation
• 1.2. Standard Inputs
  • 1.2.1. Cross-Sectional Data
    • 1.2.1.1. Energy Grids
      • get_structure()
      • energy_grid()
    • 1.2.1.2. Cross Section Libraries
      • materials()
      • create_material()
      • parse_composition()
      • Library
        • Library.path
        • Library.groups
        • Library.edges_g
        • Library.library_type
        • Library.macroscopic()
        • Library.materials()
        • Library.microscopic()
    • 1.2.1.3. ICSBEP Benchmarks
      • build_problem()
      • run_suite()
    • 1.2.1.4. Kobayashi Benchmarks
      • build_problem()
      • reference()
      • flux_at()
  • 1.2.2. Material Locations
    • spatial1d()
    • spatial2d()
    • spatial3d()
    • extrude3d()
  • 1.2.3. Spatial Data
  • 1.2.4. Angular Data
    • angular_x()
    • angular_xy()
    • angular_xyz()
  • 1.2.5. External Source Data
  • 1.2.6. Boundary Source Data
  • 1.2.7. Time-Dependent Initial Flux
• 1.3. Homogenized Zones with Multiple Materials
  • weight_spatial2d()
  • weight_spatial3d()
• 1.4. Preset Two-Dimensional Layouts
  • 1.4.1. Layout factory functions
    • cylinder_1mat()
    • cylinder_2mat()
    • double_chevron()
    • c5g7()
    • resize_weight_matrix()
  • 1.4.2. Command-line interface
• 1.5. Time-Dependent Problems
  • 1.5.1. Time Stepping Parameters
  • 1.5.2. Time Integrators
  • 1.5.3. Initial Flux
  • 1.5.4. Time-Dependent Sources
  • 1.5.5. Available Time-Dependent Solvers
  • 1.5.6. Hybrid Methods for Acceleration
• 1.6. DataTypes Reference
  • 1.6.1. MaterialData
  • 1.6.2. SourceData
  • 1.6.3. GeometryData
  • 1.6.4. SolverData
  • 1.6.5. TimeDependentData
  • 1.6.6. HybridData
  • 1.6.7. Complete Example: Fixed Source 1D
  • 1.6.8. Complete Example: Criticality 1D
  • 1.6.9. Complete Example: Time-Dependent 2D
• 1.7. Examples
  • 1.7.1. One-Dimensional Fixed Source
  • 1.7.2. One-Dimensional Criticality
  • 1.7.3. One-Dimensional Time-Dependent
  • 1.7.4. One-Dimensional Hybrid
  • 1.7.5. Two-Dimensional Fixed Source
  • 1.7.6. Two-Dimensional Criticality
  • 1.7.7. Two-Dimensional Time-Dependent
  • 1.7.8. Two-Dimensional Hybrid
  • 1.7.9. Three-Dimensional Fixed Source
  • 1.7.10. Notes on Running Examples
  • 1.7.11. Example Notebooks
    • 1.7.11.1. Spatial Discretization: Step, Diamond and Step Characteristic
      • 1.7.11.1.1. Order of accuracy
      • 1.7.11.1.2. Reed’s problem on a coarse mesh
      • 1.7.11.1.3. Scattering reaction rate
    • 1.7.11.2. Artificial Scattering for Ray Effect Mitigation
      • 1.7.11.2.1. Problem setup
      • 1.7.11.2.2. Solving with and without artificial scattering
      • 1.7.11.2.3. Choosing \(\sigma_{as}\)
      • 1.7.11.2.4. Notes
    • 1.7.11.3. The Collision-Based Hybrid Method
      • 1.7.11.3.1. Problem setup
      • 1.7.11.3.2. Hybrid against standard S\(_N\)
      • 1.7.11.3.3. How coarse can the collided quadrature be?
      • 1.7.11.3.4. Scattering reaction rate
    • 1.7.11.4. Time Integrators: BDF1, Crank-Nicolson, BDF2 and TR-BDF2
      • 1.7.11.4.1. Order of accuracy
      • 1.7.11.4.2. A stiff transient: Reed’s problem
      • 1.7.11.4.3. Scattering reaction rate over time