Work items for 2006

 

Work items for 2006

 


 
Priority List

 

Items marked with will involve contribution from external sources interested in the project.
Items marked with will require coordination with more than one Working Group.

  1. Robustness checking:
    • Tests on tiny volume ovelaps & coincident surfaces
      • Verify through simple test cases the behavior of navigation and tracking in cases of tiny volume overlaps (order of microns) and coincident surfaces of placed volumes
  2. Implementation improvement, maintainability:
    • Review of normals for CGS and specific solids and consistent usage in the code
      • Verify implementation of SurfaceNormal() for CSG and specific solids and their boolean combinations. Verify that the new specification is always valid and assess consistency with internal implementation.
    • Review of 2nd order equations for tube, cone, orb & sphere
      • Verify correctness of implemented algorithm and response for the required precision in G4Tubs and G4Cons, G4Orb and G4Sphere
    • Review of field user classes
      • Improve existing implementation to allow easier and more intuitive API to users for tuning performance and field response
    • Refactoring and revision of biasing/scoring processes
      • Design & code review of existing biasing & scoring modules for convergence to a unique solution
    • Code review for BREP specific solids
      • Review implementation of concrete BREP solids to reduce code duplication and make better use of existing infrastructure
  3. Performance tuning:
    • Full application tuning (benchmark suite) with field
      • Deploy a benchmark suite to system testing based on a real case application to monitor effects of code changes in the performance in every new development release
    • Field performance tuning/benchmark for Geant4E
      • Complete study on electromagnetic-field tuning of parameters and algorithms used for stepping and integration, in conjunction with the development of the new error-propagation module Geant4E
  4. New features:
    • Tunable tolerance
      • Provide possibility of optionally setting tolerance for surface thickness and intersection calculation
      • Implement mechanism for automatic evaluation of the tolerance according to the geometry topology
    • Parallel navigator, first implementation
      • First implementation of a 'multiple' navigator allowing for tracking in a parallel geometry, for potential use in biasing, tallying/scoring, readout and fast parameterisation
    • Identification of the first/last step in a volume
      • Provide ability to cache and retrieve for each volume, the first and last step of a given track
    • Optimised navigation for voxelised phantom geometries
      • Allow for simplified intersection calculation applicable to regular geometrical structures defined through replicated voxels (boxes)
    • New specific paraboloid shape
      • Implement a new specific solid with parabolic surface and full section
    • Generic tessellated solid
      • Verify and test implementation of a generic tessellated shape constructed from 'polygon' decomposition of surfaces
    • Computation of surface area of a solid
      • Provide new functionality for all solids, included boolean compositions, to compute the associated surface area, with exact formula where possible, or through MC approximation
  5. Documentation:
    • Review of user documentation
      • Review chapter on geometry in the User's Guide to include new features and modifications according to development

Previous years planned activities

 

2001 | 2002 | 2003 | 2004 | 2005

 

Created: 27 January 2006
Modified: 28 February 2006, GC